TWI829113B - Self cleaning device and method for continuous filtration of high viscosity fluids - Google Patents

Abstract

A method of continuous filtration of contaminants from a contaminated viscous fluid, the method may include: pumping the contaminated viscous fluid between a non-perforated surface and a perforated surface disposed substantially parallel to each other at a defined gap; moving the non-perforated surface and/or the perforated surface with respect to each other at a defined relative speed; providing pressure to the contaminated viscous fluid; and regulating the relative speed and the pressure so that a layer of the contaminated viscous fluid adjacent to the perforated surface is forced to flow through perforation apertures of the perforated surface to other side of the perforated surface, while contaminants having a size larger than a size of the perforation apertures are forced to flow in the direction substantially parallel to the relative speed.

Description

Automatic cleaning device and method for continuous filtration of highly viscous fluids

The present invention relates to the field of devices for continuously filtering contaminants from viscous fluids, and more specifically, to automatic cleaning devices in this field.

Current devices for filtering contaminants from viscous fluids such as molten polymeric materials with contaminants typically include filter elements having a plurality of pores. The holes are generally adapted to allow the passage of viscous fluids and prevent the passage of contaminants. During the filtration process, contaminants may accumulate on the surface of the filter element and clog its pores.

Some current devices include metal blades adapted to scrape the filter element thereby cleaning accumulated contaminants from the pores. However, such scraping of the filter element by the metal blade may damage the filter element, so the blade and/or filter element need to be replaced frequently. Some other current devices utilize return flow of filtered viscous fluid to remove contaminants blocking the pores and clean the filter elements. However, this results in a waste of filtered viscous fluid and/or requires interruption of the filtration process.

Therefore, there has long been a need for an automatic cleaning device for continuous filtering of viscous fluids.

One aspect of the present invention may provide a method of continuously filtering contaminants from contaminated viscous fluids, the method may include pumping between an unperforated surface and a perforated surface disposed substantially parallel to each other with a defined gap The contaminated viscous fluid, thereby forcing the contaminated viscous fluid to move in a longitudinal direction along the gap; causing the non-perforated surface and the perforated surface to move relative to each other at a defined relative speed, thereby forcing the contaminated viscous fluid to move in a longitudinal direction along the gap; The fluid moves in a direction substantially parallel to the relative velocity such that a shear rate is generated in the contaminated viscous fluid close to the perforated surface in the direction substantially parallel to the relative velocity; providing the contaminated viscous fluid with pressure, thereby forcing the contaminated viscous fluid to move in a direction substantially perpendicular to the relative velocity; and adjusting the relative velocity, the pressure, and an average shear rate within the gap, thereby forcing the relative velocity adjacent to the perforated surface to A layer of contaminated viscous fluid flows through the through holes of the perforated surface to the other side of the perforated surface, while contaminants larger than the through holes are forced to flow in a direction substantially parallel to the relative velocity.

In some embodiments, the method may further include setting the relative velocity, the pressure, and the average shear rate within the gap such that the contaminated viscous fluid has an average velocity in a direction substantially parallel to the relative velocity. At least 50 times greater than an average velocity of the contaminated viscous fluid towards the perforated surface, such that the average shear rate in the gap is at least 50 1/sec.

In some embodiments, the method may further include, when the filter is in the filtration mode, during actual filtration of the contaminated viscous fluid, by passing the through holes from the other side of the perforated surface to the contaminated viscous fluid. The contaminated viscous fluid side provides a fluid pressurized injection of filtered viscous fluid to remove contaminant particles accumulated on the perforated surface.

In some embodiments, the through holes are slots, each slot having a long dimension and a short dimension.

In some embodiments, the slots are substantially aligned along their long dimensions substantially perpendicular to the relative velocity.

In some embodiments, the perforated surface may include a plurality of grooves, wherein the depth of the grooves is less than a short dimension of the slots.

In some embodiments, at least one of the grooves spans at least one of the slots.

In some embodiments, the perforated surface is shaped as a first cylinder with a first longitudinal center axis, and the non-perforated surface is shaped as a second cylinder with a second longitudinal center axis; the through holes are formed along A circumference of the first cylinder is disposed along at least one longitudinal filter portion; the second longitudinal center axis of the second cylinder coincides with the first longitudinal center axis of the first cylinder to provide a ring therebetween shaped gap; the relative velocity is tangent to the surface and perpendicular to the second longitudinal central axis of the second cylinder and the first longitudinal central axis of the first cylinder.

In some embodiments, the first cylinder is disposed within the second cylinder.

In some embodiments, the second cylinder is disposed within the first cylinder.

In some embodiments, the method may further include rotating the first cylinder about a common longitudinal center axis.

In some embodiments, the method may further include rotating the second cylinder about a common longitudinal center axis.

In some embodiments, the first cylinder tapers along the first longitudinal central axis such that the gap decreases along the first longitudinal central axis.

In some embodiments, the second cylinder tapers along the second longitudinal center axis such that the gap decreases along the second longitudinal center axis.

In some embodiments, the second cylinder may include at least one longitudinal fin protruding from the second cylinder into the annular gap and toward the first cylinder, the at least one longitudinal fin being in contact with the second longitudinal fin. The central axis is aligned and extends along at least a portion of the length of the at least one longitudinal filter portion.

In some embodiments, one of the first cylinder or the second cylinder may include at least one section of spiral flying fins disposed along the corresponding longitudinal center axis and downstream of the at least one longitudinal filter portion, the spiral Flying fins protrude into this annular gap.

Another aspect of the present invention may provide a device for continuously filtering contaminants from viscous fluids. The device may include: a first cylinder having a first longitudinal center axis and may include at least one longitudinal filter portion, The at least one longitudinal filter portion may include a plurality of holes along its circumference; and a second cylinder having a second longitudinal center axis coincident with the first longitudinal center axis of the first cylinder; and wherein the first The cylinder is adapted to overlap and rotate relative to the second cylinder such that an annular gap is formed between the first cylinder and the second cylinder, wherein the annular gap is adapted to receive the viscous fluid.

In some embodiments, the device may further include: a rotation assembly including at least one rotation motor coupled to the first cylinder and adapted to rotate the first cylinder at a predetermined rotation speed; and a A controller is in communication with the rotating component, and the controller is configured to control the rotation of the first cylinder through the rotating component according to the predetermined rotation speed.

In some embodiments, the first cylinder is disposed within the second cylinder.

In some embodiments, the second cylinder is disposed within the first cylinder.

In some embodiments, the holes are slots, each slot having a long dimension and a short dimension.

In some embodiments, the slots are substantially aligned along their long dimensions with the first longitudinal central axis of the first cylinder.

In some embodiments, the first cylinder may further include a plurality of grooves along its circumference, wherein the depth of the grooves is less than a short dimension of the slots.

In some embodiments, at least one of the grooves spans at least one of the slots.

In some embodiments, the at least one longitudinal filter portion is disposed a predetermined distance downstream of the first end of the first cylinder.

In some embodiments, the second cylinder may include at least one flow guide element along the second longitudinal central axis, wherein the at least one flow guide element protrudes from a wall of the second cylinder into the annular gap and substantially towards the first cylinder.

In some embodiments, the first cylinder tapers along the first longitudinal central axis such that the gap decreases along the first longitudinal central axis.

In some embodiments, the second cylinder tapers along the second longitudinal center axis such that the gap decreases along the second longitudinal center axis.

In some embodiments, the second cylinder may include at least one longitudinal fin protruding from the second cylinder into the annular gap and toward the first cylinder, the at least one longitudinal fin being in contact with the second longitudinal fin. The central axis is aligned and extends along at least a portion of the length of the at least one longitudinal filter portion.

In some embodiments, the first cylinder may include at least one section of a helical flying fin disposed along the first longitudinal central axis, the helical flying fin protruding into the annular gap.

In some embodiments, the device may further include a cleaning assembly, which may include: at least one washing injector including a plurality of injection holes/slots; and a cleaning pipe in fluid communication with the at least one washing injector, and adapted to deliver a clean viscous fluid to the at least one wash jet; wherein the at least one wash jet is arranged and sized to extend along at least a portion of the at least one longitudinal filter portion of the first cylinder and is adapted to The clean viscous fluid is sprayed toward the rotating first cylinder from the clean viscous side of the rotating first cylinder through its hole toward the other side of the rotating first cylinder.

Another aspect of the present invention may provide a device for continuously filtering contaminants from viscous fluids. The device may include: a first cylinder having a first longitudinal center axis and may include at least one longitudinal filter portion, The at least one longitudinal filter portion includes a plurality of holes along its circumference; a second cylinder having a second longitudinal center axis coincident with the first longitudinal center axis of the first cylinder, wherein the first cylinder is adapted to Overlapping and rotating relative to the second cylinder such that an annular gap is formed between the first cylinder and the second cylinder, wherein the annular gap is suitable for receiving the viscous fluid; at least one set of longitudinal fins , disposed on the second cylinder at a position corresponding to the position of the at least one longitudinal filter portion on the first cylinder, wherein the at least one set of longitudinal fins may include at least one longitudinal fin, from the third Two cylinders protrude into the annular gap and toward the first cylinder, the at least one longitudinal fin is aligned with the second longitudinal central axis and extends along at least a portion of the length of the at least one longitudinal filter portion; and at least one spiral section Flying fins are arranged along the first longitudinal center axis of the first cylinder and protrude into the annular gap.

Another aspect of the present invention may provide a device for continuously filtering contaminants from a viscous fluid. The device may include: a first cylinder having a first longitudinal center axis and may include at least one longitudinal filter portion. , the at least one longitudinal filter portion may include a plurality of holes along its circumference; and a second cylinder having a second longitudinal center axis coincident with the first longitudinal center axis of the first cylinder; and wherein the The two cylinders are adapted to overlap and rotate relative to the first cylinder such that an annular gap is formed between the first cylinder and the second cylinder, wherein the annular gap is adapted to receive the viscous fluid.

In some embodiments, the device may further include: a rotation assembly, which may include at least one rotation motor coupled to the second cylinder and adapted to rotate the second cylinder at a predetermined rotation speed; and a A controller is in communication with the rotating component, and is configured to control the rotation of the second cylinder through the rotating component according to the predetermined rotation speed.

In some embodiments, the first cylinder is disposed within the second cylinder.

In some embodiments, the second cylinder is disposed within the first cylinder.

In some embodiments, the holes are slots, each slot having a long dimension and a short dimension.

In some embodiments, the slots are substantially aligned along their long dimensions with the first longitudinal central axis of the first cylinder.

In some embodiments, the first cylinder may further include a plurality of grooves along its circumference, wherein the depth of the grooves is less than a short dimension of the slots.

In some embodiments, at least one of the grooves spans at least one of the slots.

In some embodiments, the at least one longitudinal filter portion is disposed a predetermined distance downstream of a first end of the first cylinder.

In some embodiments, the first cylinder tapers along the first longitudinal central axis such that the gap decreases along the first longitudinal central axis.

In some embodiments, the second cylinder tapers along the second longitudinal center axis such that the gap decreases along the second longitudinal center axis.

In some embodiments, the second cylinder may include at least one longitudinal fin protruding from the second cylinder into the annular gap and toward the first cylinder, the at least one longitudinal fin being in contact with the second longitudinal fin. The central axis is aligned and extends along at least a portion of the length of the at least one longitudinal filter portion.

In some embodiments, the second cylinder may include at least one section of helical flying fins disposed along the first longitudinal central axis.

Another aspect of the present invention may provide a device for continuously filtering contaminants from viscous fluids. The device may include: a first cylinder having a first longitudinal center axis and may include at least one longitudinal filter portion, The at least one longitudinal filter portion may include a plurality of holes along its circumference; a second cylinder having a second longitudinal center axis coincident with the first longitudinal center axis of the first cylinder, wherein the second cylinder Suitable to overlap and rotate relative to the first cylinder such that an annular gap is formed between the first cylinder and the second cylinder, wherein the annular gap is adapted to receive the viscous fluid; at least one set of longitudinal fins The sheet is arranged on the second cylinder at a position corresponding to the position of the at least one longitudinal filter portion on the first cylinder, wherein the at least one set of longitudinal fins may include at least one longitudinal fin, from the A second cylinder protrudes into the annular gap and toward the first cylinder, the at least one longitudinal fin being aligned with the second longitudinal central axis and extending along at least a portion of the length of the at least one longitudinal filter portion; and at least one section Spiral flying fins are arranged along the second longitudinal center axis of the second cylinder and protrude into the annular gap.

Another aspect of the present invention may provide a method for continuously filtering contaminants from contaminated viscous fluids. The method may include: between an unperforated surface and a perforated surface disposed substantially parallel to each other with a defined first gap. Pumping the contaminated viscous fluid through the gap, thereby forcing the contaminated viscous fluid to move in a longitudinal direction along the gap; causing the non-perforated surface and the perforated surface to move relative to each other at a defined relative speed, thereby forcing the contaminated viscous fluid to move in a longitudinal direction along the gap; The contaminated viscous fluid moves in a direction substantially parallel to the relative velocity such that a shear rate is generated in the contaminated viscous fluid adjacent the perforated surface in the direction substantially parallel to the relative velocity; wherein the perforated surface is shaped is a first cylinder having a first longitudinal center axis, and the unperforated surface is shaped as a second cylinder having a second longitudinal center axis coincident with the first longitudinal center axis, and the first cylinder is The second cylinders overlap, and wherein the relative speed is a rotational speed and the first gap is an annular gap, and wherein the second cylinder includes one or more longitudinal fins extending from the second cylinder toward the The perforated surface of the first cylinder protrudes into the first gap, thereby forming a second gap between the distal ends of the fins and the perforated surface, the second gap being smaller than the first gap. The method may also include adjusting the relative velocity, the pressure, and an average shear rate at the second gap to force a layer of the contaminated viscous fluid adjacent the perforated surface to flow through the through holes of the perforated surface to On the other side of the perforated surface, contaminants with sizes larger than those of the through holes are forced to flow in a direction substantially parallel to the relative velocity, wherein the relative velocity is consistent with the relationship between the first cylinder and the second cylinder. The surface is tangential and perpendicular to the second longitudinal central axis of the second cylinder and the first longitudinal central axis of the first cylinder.

In some embodiments, the method may further include setting the relative velocity, the pressure, and the average shear rate within the gap such that the contaminated viscous fluid has an average velocity in a direction substantially parallel to the relative velocity. At least 50 times greater than an average velocity of the contaminated viscous fluid toward the perforated surface, while maintaining the flow of the viscous fluid adjacent the perforated surface to be substantially laminar and such that the average shear rate within the gap At least 50 1/second.

In some embodiments, the through holes are slots each having a long dimension and a short dimension, and wherein the long dimensions of the slots are substantially aligned, substantially perpendicular to the relative velocity and parallel to the first cylinder Longitudinal axis.

In some embodiments, the rotational speed of the second cylinder may increase at a given rotational speed acceleration for a first period of time and then decelerate to a nominal rotational speed at a lower rate, thereby instantaneously increasing contaminants. The cleaning effect that comes off the perforated surface.

In some embodiments, the method may include during actual filtration of the contaminated viscous fluid by preferentially increasing the fluid pressure of the filtered viscous fluid on the other side of the perforated surface to that with the contaminated viscous fluid. The pressure of the contaminated fluid on both sides of the viscous fluid is substantially the same level to remove the contaminant particles accumulated on the perforated surface, and at the same time by filtering the contaminated fluid with the contaminated viscous fluid during the actual filtration of the contaminated fluid. The side of the fluid provides a fluid pressurized injection of filtered viscous fluid to maintain the shear rate of the second gap.

In some embodiments, the perforated surface includes a plurality of grooves, wherein a depth of the grooves is less than a short dimension of the slots, and wherein at least one of the grooves spans a portion of the slots. At least one.

In some embodiments, the through holes are provided along at least one longitudinal filtering portion along the circumference and length of the first cylinder.

In some embodiments, the first cylinder is disposed within the second cylinder.

In some embodiments, the second cylinder is disposed within the first cylinder.

In some embodiments, the annular gap is formed by at least one of the first cylinder being tapered along the first longitudinal center axis and the second cylinder being tapered along the second longitudinal center axis along a common axis of rotation. The annular gap is gradually narrowed so that the annular gap decreases along the first longitudinal center axis.

In some embodiments, one of the first cylinder or the second cylinder includes at least one section of spiral flying fins disposed along the corresponding longitudinal central axis and downstream of the at least one longitudinal filter portion, the spiral flying fin The fins protrude into this annular gap.

Another aspect of the present invention may provide a device for continuously filtering contaminants from viscous fluids, the device comprising: a first cylinder having a first longitudinal center axis and including at least one longitudinal filter portion, the at least A longitudinal filter portion includes a plurality of holes along its circumference; and a second cylinder having a second longitudinal central axis coincident with the first longitudinal central axis of the first cylinder; wherein the first cylinder is adapted to Overlapping and rotating relative to the second cylinder such that an annular gap is formed between the first cylinder and the second cylinder, wherein the annular gap is adapted to receive the viscous fluid, and wherein the second cylinder Comprising one or more longitudinal fins protruding from the second cylinder toward the perforated surface of the first cylinder into the annular gap, thereby forming a second second cylinder between the distal ends of the fins and the perforated surface. gap, the second gap is smaller than the annular gap.

In some embodiments, the device further includes: a rotation assembly including at least one rotation motor coupled to one of the first cylinder and the second cylinder and adapted to rotate in a controlled manner respectively. The rotation speed rotates one of the first cylinder and the second cylinder; and a controller is communicated with the rotation component, the controller is configured to control the first cylinder through the rotation component according to the controlled rotation speed. A relative rotation with the second cylinder.

In some embodiments, the first cylinder is disposed within the second cylinder.

In some embodiments, the second cylinder is disposed within the first cylinder.

In some embodiments, the holes are slots each having a long dimension and a short dimension, and wherein the long dimension of the slots is substantially aligned with the first longitudinal central axis of the first cylinder.

In some embodiments, the device further includes one or more jets disposed on the other side of the perforated surface, adapted to move from the other side of the perforated surface toward the object having the affected viscous fluid during actual filtration of the contaminated viscous fluid. The side contaminated with viscous fluid provides a fluid pressurized injection of filtered viscous fluid.

In some embodiments, the first cylinder further includes a plurality of grooves along its circumference, wherein the depth of the grooves is less than a short dimension of the slots.

In some embodiments, at least one of the grooves spans at least one of the slots.

In some embodiments, the at least one longitudinal filter portion is disposed a predetermined distance downstream of a first end of the first cylinder.

In some embodiments, the annular gap is formed by at least one of the first cylinder being tapered along the first longitudinal center axis and the second cylinder being tapered along the second longitudinal center axis along a common axis of rotation. Narrows gradually so that the gap decreases along the first longitudinal center axis.

In some embodiments, the first cylinder includes at least one section of helical flying fins disposed along the first longitudinal central axis, the helical flying fins protruding into the annular gap.

In some embodiments, the device further includes a cleaning assembly, the cleaning assembly includes: at least one washing injector including a plurality of injection holes/slots; and a cleaning pipe in fluid communication with the at least one washing injector and adapted to delivering a clean viscous fluid to the at least one wash jet; wherein the at least one wash jet is configured and sized to extend along at least a portion of the at least one longitudinal filter portion of the first cylinder and is adapted to extend from The clean viscous side of the rotating first cylinder sprays the clean viscous fluid toward the rotating first cylinder through its hole toward the other side of the rotating first cylinder.

Another aspect of the present invention may provide a device for continuously filtering contaminants from viscous fluids, the device comprising: a first cylinder having a first longitudinal center axis and including at least one longitudinal filter portion, the at least A longitudinal filter portion includes a plurality of holes along its circumference; a second cylinder having a second longitudinal central axis coincident with the first longitudinal central axis of the first cylinder, wherein the first cylinder is adapted to oppose The second cylinder overlaps and rotates so that an annular gap is formed between the first cylinder and the second cylinder, wherein the annular gap is suitable for receiving the viscous fluid; at least one set of longitudinal fins, A position corresponding to the position of the at least one longitudinal filter portion on the first cylinder is provided on the second cylinder, wherein the at least one set of longitudinal fins includes at least one longitudinal fin, from the second cylinder a body protruding into the annular gap and toward the first cylinder, the at least one longitudinal fin being aligned with the second longitudinal central axis and extending along at least a portion of the length of the at least one longitudinal filter portion; and at least one section of the helical flight fins are arranged along the first longitudinal center axis of the first cylinder and protrude into the annular gap.

Another aspect of the present invention may provide a device for continuously filtering contaminants from viscous fluids, the device comprising: a first cylinder having a first longitudinal center axis and including at least one longitudinal filter portion, the At least one longitudinal filter portion includes a plurality of holes along its circumference; and a second cylinder having a second longitudinal center axis coincident with the first longitudinal center axis of the first cylinder, wherein the second cylinder is adapted to The annular gap is formed between the first cylinder and the second cylinder by overlapping and rotating relative to the first cylinder, wherein the annular gap is suitable for receiving the viscous fluid.

In some embodiments, the device further includes: a rotation assembly including at least one rotation motor coupled to the second cylinder and adapted to rotate the second cylinder at a predetermined rotation speed; and a control The controller is in communication with the rotating component, and the controller is configured to control the rotation of the second cylinder through the rotating component according to the predetermined rotation speed.

In some embodiments, the first cylinder is disposed within the second cylinder.

In some embodiments, the second cylinder is disposed within the first cylinder.

In some embodiments, the holes are slots, each slot having a long dimension and a short dimension.

In some embodiments, the slots are substantially aligned along their long dimensions with the first longitudinal central axis of the first cylinder.

In some embodiments, the first cylinder further includes a plurality of grooves along its circumference, wherein the depth of the grooves is less than a short dimension of the slot.

In some embodiments, at least one of the grooves spans at least one of the slots.

In some embodiments, the at least one longitudinal filter portion is disposed a predetermined distance downstream of a first end of the first cylinder.

In some embodiments, the first cylinder tapers along the first longitudinal central axis such that the gap decreases along the first longitudinal central axis.

In some embodiments, the second cylinder tapers along the second longitudinal center axis such that the gap decreases along the second longitudinal center axis.

In some embodiments, the second cylinder includes at least one longitudinal fin protruding from the second cylinder into the annular gap and toward the first cylinder, the at least one longitudinal fin being aligned with the second longitudinal center The axis is aligned and extends along at least a portion of the length of the at least one longitudinal filter portion.

In some embodiments, the second cylinder includes at least one section of spiral flying fins disposed along the first longitudinal central axis.

Another aspect of the invention may provide a device for continuously filtering contaminants from a viscous fluid, the device comprising: a first cylinder having a first longitudinal center axis and including at least one longitudinal filter portion, the at least one The longitudinal filter portion includes a plurality of holes along its circumference; a second cylinder having a second longitudinal center axis coincident with the first longitudinal center axis of the first cylinder, wherein the second cylinder is adapted to be relative to the first longitudinal center axis of the first cylinder; The first cylinder overlaps and rotates, so that an annular gap is formed between the first cylinder and the second cylinder, wherein the annular gap is suitable for receiving the viscous fluid; at least one set of longitudinal fins, between A position corresponding to the position of the at least one longitudinal filter portion on the first cylinder is provided on the second cylinder, wherein the at least one set of longitudinal fins includes at least one longitudinal fin protruding from the second cylinder. into the annular gap and toward the first cylinder, the at least one longitudinal fin aligned with the second longitudinal central axis and extending along at least a portion of the length of the at least one longitudinal filter portion; and at least one section of helical flying fin A piece is disposed along the second longitudinal center axis of the second cylinder and protrudes into the annular gap.

These, additional and/or other aspects and/or advantages of the invention are set forth in the detailed description that follows; may be inferred from the detailed description; and/or may be learned by practice of the invention.

In the following description, aspects of the invention are described. For purposes of explanation, specific configurations and details are set forth in order to provide a thorough understanding of the invention. However, it will also be apparent to those skilled in the art that the present invention may be practiced without the specific details presented herein. Furthermore, well-known features may be omitted or simplified so as not to obscure the invention. With specific reference to the drawings, it is emphasized that the details shown are exemplary and are merely used for illustrative discussion of the invention in order to provide what is believed to be the most useful and understandable description of the principles and concepts of the invention. In this regard, no attempt is made to show structural details of the invention in more detail than is necessary for a basic understanding of the invention, which description, taken in conjunction with the drawings, will make various forms of the invention apparent to those skilled in the art. can be reflected in practice.

Before at least one embodiment of the present invention is explained in detail, it is to be understood that the invention is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the drawings. The invention is applicable to other embodiments and combinations of the disclosed embodiments which may be practiced or carried out in various ways. Additionally, it is to be understood that the phraseology and terminology used herein are for the purpose of description and should not be regarded as limiting.

Referring now to FIGS. 1A , 1B , 1C , 1D and 1E , which are schematic diagrams of a device 100 for continuously filtering contaminants from viscous fluids according to some embodiments of the present invention.

Figures 1A and 1C show perspective views of the device 100 and the device 100' respectively. Figure 1B shows a perspective view of the device 100, in which the portion of the first cylinder 110 hidden by the second cylinder 120 is depicted by a dotted line. FIGS. 1D and 1E respectively show the longitudinal section AA' and the transverse section BB' of the device 100 , where sections AA' and BB' are defined in FIG. 1A .

Device 100 may include a first cylinder 110 having a first longitudinal center axis 112 and a second cylinder 120 having a second longitudinal center axis 122 . The first cylinder 110 and the second cylinder 120 may overlap such that the first longitudinal center axis 112 coincides with the second longitudinal center axis 122 and an annular gap 130 is formed between the first cylinder 110 and the second cylinder 120 ( For example, as shown in Figures 1A, 1B, 1C, 1D and 1E).

In various embodiments, the first cylinder 110 may be disposed within the second cylinder 120 (eg, as shown in FIGS. 1A, 1B, 1D, and 1E), or the second cylinder 120 may be disposed within the first within cylinder 110 (for example, as shown in Figure 1C).

The annular gap 130 between the first cylinder 110 and the second cylinder 120 may be adapted to receive viscous fluid. For example, the viscous fluid may be a melt of polymeric material. For example, the melt of polymeric material may include a plurality of contaminants. For example, the contaminants may include hard solid particles of minerals, metals, fibers, etc. In another embodiment, the contaminants may include soft semi-solid particles of elastomers, foreign polymers with melting points higher than viscous fluids, etc.

The first cylinder 110 may be rotatably supported and adapted to rotate about the first longitudinal central axis 112 and relative to the second cylinder 120 (eg, as in Figures 1A, 1B, 1C, 1D, and 1E (shown by arrow 112a).

The first cylinder 110 may include a plurality of holes 116 disposed along at least a portion of the circumference of the first cylinder 110 . The apertures 116 may be provided along at least one longitudinal filter portion 113 of the first cylinder 110 (eg, in a direction along the first longitudinal central axis 112). For example, FIGS. 1B and 1C show portions 110a, 110b, respectively, of the circumference of the first cylinder 110 having holes 116 and enlarged views thereof.

In various embodiments, the shape and/or size of the holes 116 and/or the distance between the holes 116 and/or the topology of the location of the holes 116 on the first cylinder 110 may be predetermined such that the viscous fluid Able to achieve the required flow while preventing contaminants from passing through them. In some embodiments, hole 116 may have a circular shape.

In some embodiments, the hole 116 may be gradually narrowed in the radial direction such that the opening 116a of the hole 116 on the inner surface 111a of the first cylinder 110 may be larger than the hole 116 on the outer surface 111b of the first cylinder 110 opening 116b.

Referring now to FIGS. 1F and 1G , which are schematic diagrams of a more detailed aspect of a device 100 for continuously filtering contaminants from viscous fluids according to some embodiments of the present invention, and further illustrate the operation of the device 100 .

1F and 1G respectively show the longitudinal section AA' and the transverse section BB' of the device 100, where the sections AA' and BB' are defined in FIG. 1A.

Referring also to FIG. 1H , which is a schematic diagram of the relative velocity components of a viscous fluid relative to a hole 116 on a first cylinder 110 of a device 100 for continuously filtering contaminants from a viscous fluid according to an embodiment of the present invention. Partial schema.

According to some embodiments, device 100 may include: housing 140; rotation assembly 150; and controller 160.

The housing 140 may be adapted to receive the first cylinder 110 and the second cylinder 120 , and the first cylinder 110 and the second cylinder 120 may be adapted to be installed within the housing 140 . The rotation assembly 150 may include at least one rotation motor coupled to the first cylinder 110 and adapted to rotate the first cylinder 110 . The controller 160 may be in communication with the rotation assembly 150 and may be configured to control the rotation of the first cylinder 110 through the rotation assembly 150 .

According to some embodiments, a viscous fluid with contaminants 90 (eg, a melt of polymeric material with contaminants) may be introduced into the annular gap 130 between the first cylinder 110 and the second cylinder 120 . For example, the second cylinder 120 may include one or more inlet openings 124 at its first end 120a, wherein the inlet openings 124 may be in fluid communication with the annular gap 130 and may be adapted to introduce a viscous fluid with contaminants 90 in annular gap 130 (for example, as shown in FIG. 1F).

Continuously introducing the viscous fluid with contaminants 90 into the annular gap 130 can drive the viscous fluid with contaminants 90 along the annular gap 130 in the longitudinal direction 132 to form a gap between the first end 130 a and the second end 130 b of the annular gap 130 extending between them, thereby generating a longitudinal flow 132a of viscous fluid.

The pressure generated within annular gap 130 (eg, at least as a result of the continuous introduction of viscous fluid with contaminants 90 therein at a desired flow rate and the introduction of pressure) can drive the viscous fluid with contaminants 90 in the radial direction 134 Flow toward the perforated surface while maintaining substantially laminar tangential flow of the viscous contaminant fluid near the perforated surface, thereby creating a radial flow 134a of the viscous fluid (eg, in addition to its longitudinal flow 132a). The pressure within the annular gap 130 can therefore force the viscous fluid through the holes 116 on the circumference of the first cylinder 110 . The holes 116 prevent contaminants from passing therethrough, thereby filtering the contaminants from the viscous fluid and retaining the contaminants within the annular gap 130 . Clean viscous fluid 92 (eg, free of contaminants, or substantially free of contaminants) may be controllably removed from, eg, portion 110b of first cylinder 110 using clean viscous fluid removal device 170 .

The first cylinder 110 can be continuously rotated about its first longitudinal center axis 112 by the rotating assembly 150, thereby generating a laminar tangential resistance flow 136a of the viscous fluid within the annular gap 130 along its tangential direction 136 (e.g., in addition to the longitudinal flow and radial flow). Between the rotating first cylinder 110 and the stationary A tangential velocity gradient is generated between the stopped second cylinders 120 . Contaminant particles in the layer away from the surface of the rotating first cylinder 110 are dragged at a slower tangential velocity than the surface of the rotating first cylinder 110 , thereby creating an automatic motion around the surface of the rotating first cylinder 110 Tangential relative motion 136b of sweeping in which contaminant particles move tangentially (e.g., along tangential direction 136) and longitudinally downward (e.g., along longitudinal direction 132) toward second end 120b and toward first cylinder 110 The surface moves (eg, in radial direction 134). As long as the rotational speed of the first cylinder 110 is maintained and/or the desired shear rate near the surface of the first cylinder 110 is maintained (e.g., as described below), even when contacting the surface of the rotating first cylinder 110, dimensions greater than The contaminant particles of the holes 116 on the surface of the first cylinder 110 can also continue their rotational movement. It should be noted that according to embodiments of the present invention, the flow of the viscous fluid in the radial direction is maintained toward and through the perforated surface, while the remaining fluid that does not pass through the perforated surface remains essentially laminar tangential flow, for example, as shown in Figures 1G and As indicated by arrow 136a in Figure 1H.

Typical viscosities of plastic melts range from a minimum of 0.1 Pa·s at a shear rate of 100 1/s at the melt processing temperature to several orders of magnitude higher (up to 10,000 Pa·s). It is known in the art that at such high viscosities, viscous forces dominate, while inertial (gravitational or centrifugal) forces are relatively negligible. The ratio of the inertial force to the viscous force is called the Reynolds number (Re). The flow at low Re is characterized by a smooth-layer laminar flow state, and when Re exceeds about 2900, the flow contains turbulence. In the field of polymer melt processing, due to the high viscosity, the flow is smooth and there is no vortex laminar flow. In the embodiment of the present invention, the range of Reynolds number remains Re<1, that is, it is completely within the stable laminar flow range.

As long as the rotational speed of the first cylinder 110 is maintained and/or the desired shear rate near the surface of the first cylinder 110 is maintained (e.g., as described below), even when contacting the surface of the rotating first cylinder 110, dimensions greater than The contaminant particles of the holes 116 on the surface of the first cylinder 110 can also continue their rotational movement.

The rotational speed of the first cylinder 110 and the consequent tangential resistance flow 136a and/or the tangential relative motion 136b of the automatic cleaning can be determined to significantly minimize the adhesion of contaminants to the first cylinder 110, and Obstruction of the aperture 116 by contaminants is significantly minimized (eg, at least due to the tangential relative motion 136b of the self-cleaning), thereby producing a self-cleaning/sweeping effect. In some embodiments, self-cleaning tangential relative motion 136b may be produced along the entire filter portion 113 of the first cylinder 110 having holes 116 . In this way, automatic cleaning/cleaning of the first cylinder 110 is applied to the entire filter section 113 simultaneously.

The self-cleaning/sweeping effect may occur due to the shear rate of the viscous fluid near the surface of the first cylinder 110 , where in some embodiments the shear rate may be determined by at least the rotational speed of the first cylinder 110 and the annular shape of the first cylinder 110 . The size of the gap 130 determines. For example, an average shear rate in the annular gap 130 of at least 50 1/second, such as 100-500 1/second, can provide an automatic cleaning/sweeping effect.

Generally, the rotational speed of the first cylinder 110 may be controlled to ensure that the tangential velocity of the viscous fluid near the surface of the first cylinder 110 (e.g., due to tangential resistance flow 136a) is significantly higher than the average radial velocity of the viscous fluid. velocity (e.g., due to radial flow 134a). In some embodiments, the rotational speed may be controlled to provide a ratio of maximum tangential speed to average radial speed of at least 50, such as at least 100-3000.

The viscous fluid with contaminants 90 flowing in the annular gap 130 (for example, due to the continuous introduction of the viscous fluid with the contaminants 90 into the annular gap 130 ) can be directed toward the device in the annular gap 130 at its second end 130 b export flows. The controlled removal of viscous fluid with contaminants 90 at the second end 130b of the annular gap 130 may help to generate pressure within the annular gap 130 and thus may contribute to the viscous fluid (e.g., along the radial direction). Direction 134) radial flow through holes 116 and filtration of viscous fluids. Viscous fluid with contaminants 90 accumulated within the annular gap 130 at its second end 130b may be removed from the annular space using an unfiltered viscous fluid removal device 172 coupled to, for example, the second end 120b of the second cylinder 120 . Gaps 130 are controllably removed (eg, preferably continuously, or periodically or at predetermined time points).

According to some embodiments, device 100 may include cooling unit 180 (eg, as shown in Figure IF). The cooling unit 180 may be adapted to cool the device 100 .

According to some embodiments, disclosed devices (eg, such as the device 100 described above with respect to Figures 1A, 1B, 1C, 1D, 1E, 1F, 1G, and 1H) can implement viscous fluids (e.g., highly viscous fluids such as melts of polymer materials) while performing continuous automatic cleaning of the device. The automatic cleaning of the device can be realized by rotating its filter element (for example, the first cylinder 110) at a controlled rotation speed, so as to realize the automatic cleaning of the filter element and the fixed element (for example, the first cylinder 110 and the second cylinder). The tangential resistance flow of the viscous fluid (e.g., tangential resistance flow 136a) is generated in the annular gap of the viscous fluid between the annular gap 130) of the viscous fluid and/or in the immediate vicinity of the filter element (e.g., the self-cleaning tangential flow). The tangential relative motion of the relative motion 136b) produces automatic cleaning of the viscous fluid in the annular gap. The rotation speed of the filter element and the size of the annular gap can be determined to ensure that the speed of the tangential resistance flow (e.g., due to the rotation of the filter element) is at least 50 (e.g., at least 100-3000) times higher than that in the annular gap The average velocity of radial flow of a viscous fluid (e.g., given by generated by the pressure in the annular gap), and the average shear rate in the annular gap is at least 50 1/s. In this way, the subsequent tangential resistance flow and/or the tangential relative motion of the automatic cleaning generated in the vicinity of the filter element can significantly minimize the adhesion of contaminants to the filter element and significantly minimize the pores of the filter element (e.g. , hole 116) is blocked, thereby producing an automatic cleaning/sweeping effect of the filter element/device. Thus, the disclosed device can eliminate or significantly reduce the need for cleaning procedures of the filter element (e.g., due to its automatic cleaning/sweeping), thereby overcoming the shortcomings of current filter devices that typically apply metal blades to the filter element, or Return the filtered viscous fluid to the filter element when the clean filter is not in filtration mode.

Referring now to Figures 2A, 2B and 2C, there is shown an apparatus 200 for continuously filtering contaminants from a viscous fluid and including a first cylinder 210 having a plurality of slots 216 in accordance with some embodiments of the present invention. Schematic diagram.

Figure 2A shows a perspective view of device 200. 2B and 2C respectively show the longitudinal section AA' and the transverse section BB' of the device 200, where sections AA' and section BB' are defined in FIG. 2A.

According to some embodiments, the device 200 may include a first cylinder 210 having a first longitudinal center axis 212 and a second cylinder 220 having a second longitudinal center axis 222 . The first cylinder 210 and the second cylinder 220 may overlap such that the first longitudinal center axis 212 coincides with the second longitudinal center axis 222 and an annular gap 230 is formed between the first cylinder 210 and the second cylinder 220 .

The first cylinder 210 may be rotatably supported and adapted to rotate about the first longitudinal central axis 212 and relative to the second cylinder 220 (eg, as shown by arrow 212a in Figures 2A, 2B, and 2C) . For example, device 200, first cylinder 210, and second cylinder 220 may be similar to device 100 described above with respect to Figures 1A, 1B, 1C, 1D, 1E, 1F, 1G, and 1H, respectively. , the first cylinder 110 and the second cylinder 120 .

According to some embodiments, the first cylinder 210 may include a plurality of slots 216 along the circumference of the first cylinder 210 . Slot 216 may be similar to hole 116 described above with respect to Figures 1A, 1B, 1C, 1D, 1E, 1F, 1G, and 1H. The slots 216 may be disposed along at least one longitudinal filter portion 218 of the first cylinder 210 (eg, in a direction along the second longitudinal central axis 122) (eg, as shown in Figure 2B). Each of the slots 216 may have a long dimension 216a and a short dimension 216b (eg, as shown in Figure 2A). In some embodiments, slot 216 may be aligned (or substantially aligned) along its long dimension 216a with first longitudinal center axis 212 of first cylinder 210 (eg, as shown in Figure 2A).

Annular gap 230 may be adapted to receive viscous fluid with contaminants 90 . At least some contaminants may have an elongated shape (eg, elongated contaminants 94 shown in Figure 2C). The first cylinder 210 can be continuously rotated about its first longitudinal center axis 212 at a controlled rotational speed. The rotational speed of the first cylinder 210 may be controlled to provide a tangential velocity of tangential resistance flow of the viscous fluid near the surface of the first cylinder 210 (e.g., due to the rotation of the first cylinder 210) that is at least 3 times higher than the average longitudinal velocity of the longitudinal flow of the viscous fluid (eg, in the longitudinal direction 232 along the annular gap 230 ). For example, the tangential resistance flow and longitudinal flow may be similar to the tangential resistance flow 136a and longitudinal flow 132a, respectively, described above with respect to FIGS. 1F, 1G, and 1H. In some embodiments, at least the rotational speed of the first cylinder 210 and the size of the annular gap 230 can produce high shear rates of the viscous fluid near the surface of the first cylinder 210 (e.g., average shear in the annular gap 130 The rate is at least 50 1/second, for example 100-500 1/second).

This predominantly tangential resistance flow near the surface of first cylinder 210 and/or this high shear rate can align elongated contaminants 94 substantially tangentially within annular gap 230 and substantially perpendicular to the first cylinder. first longitudinal central axis 212 of body 210 and slot 216 (eg, as shown in Figure 2C). In this manner, the passage of elongated contaminants through slot 216 (and/or the passage of soft elastomeric contaminants that are stretched/elongated due to the high shear rates generated by rotation of first cylinder 110) can be significantly reduction, which can enhance automatic cleaning of the device 200. Additionally, this dominant tangential resistance flow can provide a longer path for the contaminated viscous fluid within the annular gap 230, thereby more efficiently consuming clean viscous fluid from the contaminated viscous fluid.

In some embodiments, longitudinal filter portion 218 including slot 216 may be disposed a predetermined distance 218a downstream of portion 210a of first cylinder 210 where viscous fluid 90 is introduced into annular gap 230 (eg, as shown in FIG. shown in 2B). Distance 218a may be predetermined based on parameters of viscous fluid 90 (eg, viscosity) and the rotational speed of first cylinder 210 to provide elongated contaminants 94 with sufficient distance to interact with the tangential resistance flow before reaching longitudinal filter 218 Alignment.

In some embodiments, slot 216 may be aligned (or substantially aligned) along its long dimension 216a with the actual velocity vector of the viscous fluid flow. The velocity vector may be determined based on the maximum tangential velocity for tangential resistance flow, the maximum longitudinal velocity for longitudinal flow, and the maximum radial velocity for radial flow of viscous fluids.

Referring now to FIG. 2D , which is a schematic diagram of a device 200 for continuously filtering contaminants from a viscous fluid and including a first cylinder 210 having a plurality of grooves 219 in accordance with some embodiments of the present invention.

Figure 2D shows a perspective view of the device 200 and a portion 210a of the circumference of the first cylinder 210 with the slots 216 and the grooves 219 and an enlarged view thereof.

According to some embodiments, the first cylinder 210 may include a plurality of grooves 219 . The groove 219 may be provided on the surface of the first cylinder 210 facing the annular gap 230 . In some embodiments, the depth of groove 219 may be less than the short dimension 216b of slot 216. In some embodiments, groove 219 may be perpendicular (or substantially perpendicular) to slot 216 . In some embodiments, at least one of grooves 219 may span at least one of slots 216 .

Generally, the number, shape, location and/or amount of indentations of grooves 219 may be predetermined to provide a desired roughness measurement to the surface of first cylinder 210 . The desired roughness measurement may be selected to further minimize adhesion of contaminants to first cylinder 210 and minimize clogging of slot 216 with contaminants, which may enhance automated cleaning of device 200.

It should be noted that grooves may be applied to the surface of the first cylinder with holes of any shape other than slots 216 . For example, the first cylinder 110 of the device 100 (eg, as described above with respect to FIGS. 1A, 1B, 1C, 1D, 1E, 1F, 1G, and 1H) may also include grooves that may resemble 219 groove.

Referring now to FIGS. 3A and 3B , which are schematic illustrations of various configurations of a device 300 for continuously filtering contaminants from a viscous fluid and including at least one tapered cylinder according to some embodiments of the present invention.

3A and 3B show a longitudinal section AA' of the device 300 (eg, similar to the longitudinal section AA' defined in FIG. 1A ).

According to some embodiments, the device 300 may include a first cylinder 310 having a first longitudinal center axis 312 and a second cylinder 320 having a second longitudinal center axis 322 . The first cylinder 310 and the second cylinder 320 may overlap such that the first longitudinal center axis 312 coincides with the second longitudinal center axis 322 and an annular gap 330 is formed between the first cylinder 310 and the second cylinder 320 . For example, device 300, first cylinder 310, second cylinder 320, and annular gap 330 may be similar to those described above with respect to Figures 1A, 1B, 1C, 1D, 1E, 1F, 1G, and 1H, respectively. The device 100, the first cylinder 110 and the second cylinder 120 are described.

The first cylinder 310 may include a plurality of holes 316 . For example, aperture 316 may be similar to aperture 116 described above with respect to FIGS. 1A, 1B, 1C, 1D, 1E, 1F, 1G, and 1H and 2A, 2B, 2C, and 2D, respectively. and/or slot 216.

The first cylinder 310 may be rotatably supported and adapted to rotate about the first longitudinal central axis 312 and relative to the second cylinder 320 (eg, as shown by arrow 312a in Figures 3A and 3B). The annular gap 330 between the first cylinder 310 and the second cylinder 320 may be adapted to receive a viscous fluid (eg, a melt of polymer material with contaminants).

In some embodiments, first cylinder 310 may taper along its first longitudinal center axis 312 . For example, the first cylinder 310 may be smaller in size at its first end 310a than at its second end 310b such that the gap 330 decreases along the first longitudinal center axis 312 (eg, as shown in Figure 3A).

In some embodiments, the second cylinder 320 may be tapered along its second longitudinal center axis 322 . For example, the second cylinder 320 may be larger in size at its first end 320a than at its second end 320b such that the gap 330 decreases along the second longitudinal center axis 322 (eg, as shown in Figure 3B).

In some embodiments, both the first cylinder 310 and the second cylinder 320 may be tapered along their respective longitudinal center axes such that the gap 330 decreases along their respective longitudinal center axes.

Generally speaking, the tapered dimensions of the first cylinder 310 and/or the second cylinder 320 may be predetermined to provide a tapered annular gap 330 . The taper of the annular gap 330 may be determined to compensate for the pressure loss of the viscous fluid 90 within the annular gap 330 due to the flow of the viscous fluid through the holes 316 in the first cylinder 310 .

Referring now to Figures 4A, 4B, and Figures 4C and 4D, which are schematic diagrams of an apparatus 400 and an apparatus 400', respectively, for continuously filtering contaminants from a viscous fluid and including one or more devices according to some embodiments of the present invention. Longitudinal fins 440.

4A and 4B show longitudinal section AA' and transverse section BB', respectively, of device 400 (eg, similar to longitudinal section AA' and transverse section BB' defined in FIG. 1A ). 4C and 4D show longitudinal section AA' and transverse section BB', respectively, of device 400' (eg, similar to longitudinal section AA' and transverse section BB' defined in FIG. 1A).

According to some embodiments, device 400 may include a first cylinder 410 having a first longitudinal center axis 412 and a second cylinder 420 having a second longitudinal center axis 422 . The first cylinder 410 and the second cylinder 420 may overlap such that the first longitudinal center axis 412 coincides with the second longitudinal center axis 422 and an annular gap 430 is formed between the first cylinder 410 and the second cylinder 420 . For example, device 400, first cylinder 410, second cylinder 420, and annular gap 430 may be similar to those described above with respect to Figures 1A, 1B, 1C, 1D, 1E, 1F, 1G, and 1H, respectively. The device 100, the first cylinder 110 and the second cylinder 120 are described.

The first cylinder 410 may be rotatably supported and adapted to rotate about the first longitudinal central axis 412 and relative to the second cylinder 420 (eg, as shown by arrow 412a in Figures 4A and 4B). The annular gap 430 between the first cylinder 410 and the second cylinder 420 may be adapted to receive a viscous fluid (eg, a melt of polymer material with contaminants). In some embodiments, first cylinder 410 may be disposed within second cylinder 420 (eg, as shown in FIGS. 4A and 4B ), or second cylinder 420 may be disposed within first cylinder 410 (eg, as shown in FIGS. 4A and 4B ). , as shown in Figure 4C and Figure 4D).

The first cylinder 410 may include a plurality of holes 416 disposed along at least a portion of the circumference of the first cylinder 410 . Holes 416 may be provided along at least one longitudinal filter portion 413 of the first cylinder 410 . For example, aperture 416 may be similar to aperture 116 described above with respect to FIGS. 1A, 1B, 1C, 1D, 1E, 1F, 1G, and 1H and 2A, 2B, 2C, and 2D, respectively. and/or slot 216.

According to some embodiments, the second cylinder 420 may include one or more longitudinal fins 440. Longitudinal fins 440 may protrude from the second cylinder 420 into the annular gap 430 and toward (or substantially toward) the first cylinder 410 . The longitudinal fins 440 may be aligned with the second longitudinal center axis 422 of the second cylinder 420 and/or may extend in the longitudinal direction of the second cylinder 420 along at least a portion of the length of the second cylinder 420 .

The longitudinal fin 440 may protrude from the second cylinder 420 to provide a space 448 for increased shear rate between the tip of the longitudinal fin 440 and the first cylinder 410 . In this manner, the shear rate of the viscous fluid in the increased shear rate space 448 between the tip of the longitudinal fin 440 and the first cylinder 410 can be increased (e.g., compared to the embodiment without the longitudinal fin 440 Compared to ), this may further facilitate automatic cleaning/cleaning of the first cylinder 410 .

Generally speaking, the number of longitudinal fins 440 and the space 448 for increased shear rate may be determined to provide an increased shear rate between the tips of the longitudinal fins 440 and the first cylinder 410 without reduction (or minimal reduction). ) transverse cross-section of the opening for axial flow of viscous fluid through device 400 (e.g., compared to the embodiment without longitudinal fins 440). The increased shear rate in the increased shear rate space 448 may contribute to the self-cleaning effect of the device 400 .

In some embodiments, device 400 may include housing 402. Housing 402 may be adapted to accommodate first cylinder 410 and second cylinder 420 .

In some embodiments, device 400 may include at least one inlet opening 404 through which contaminated viscous fluid 90 may be pumped into annular gap 430. In some embodiments, device 400 may include a contaminated viscous fluid removal device 406 (e.g., including one or more tubes, a one or more pumps, etc.) for controllably removing contaminated viscous fluid 90 from annular gap 430. In some embodiments, device 400 may include a clean viscous fluid removal device 408 (e.g., including one or more tubes, one or more pumps, etc.) for controllably removing clean viscous fluid from device 400 92.

In some embodiments, the apparatus 400 may include a rotation assembly 450 for rotating the first cylinder 410 . In some embodiments, the device 400 may include a controller 460 for controlling at least one of the following: rotating the first cylinder 410 through the rotating assembly 450; removing contaminated viscous fluid through the contaminated viscous fluid removal device 406 ; and remove the clean viscous fluid 92 through the clean viscous fluid removal device 408 .

The following description of FIGS. 4C and 4D provides examples of dimensions of device 400 ′, operating conditions of device 400 ′ and contaminated viscous fluid 90 . Those skilled in the art will understand that this embodiment merely describes a specific embodiment within the scope of the present invention, and that a variety of sizes of device 400' with different viscous materials and devices may be designed and operated within the scope of the present invention. other operating conditions.

For example, the second cylinder 420 may have a diameter of 220 mm. The second cylinder 420 may be disposed within the rotatable first cylinder 410, wherein the diameter of the first cylinder 410 may be, for example, 250 mm. The filter portion 413 on the first cylinder 410 may have a length of 400 mm, for example.

The longitudinal fin 440 may protrude from the second cylinder 420 such that the shear rate increasing space 448 between the tip of the longitudinal fin 440 and the first cylinder 410 may be, for example, 2 mm.

For example, the holes 416 in the first cylinder 410 may be slots (eg, similar to the slots 216 described above with respect to FIGS. 2A, 2B, 2C, and 2D), which may be 60x400 μm in size and may be formed along their The long dimension of is aligned with the first longitudinal center axis 412 of the first cylinder 410 . The number of holes/slots 416 on the first cylinder 410 may be, for example, approximately 1,240,000. Hole/slot 416 may be radially tapered (eg, as shown in Figure 4C). The width of the opening 416a of the hole/slot 416 on the outer surface 410a of the first cylinder 410 may be, for example, 120 μm, and the width of the opening 416b on the inner surface 410b of the first cylinder 410 may be, for example, 60 μm.

The contaminated viscous fluid 90 may be, for example, a mixture of polyethylene grades from post-consumer recycling, containing contamination of, for example, 2% solid particles less than, for example, 500 mμ in size. The contaminated viscous fluid 90 may, for example, have a viscosity of 200 Pa·sec at 170° C. and a shear rate of 150 1/s. In some embodiments, the viscosity of the contaminated fluid will be greater than or equal to 40 Pa·sec.

Contaminated viscous fluid 90 may be pumped into annular gap 430 at a temperature of, for example, 170°C. The first cylinder 410 may rotate at 50 RPM, for example. The contaminated viscous fluid 90 may be, for example, A flow rate of 1200 kg/hr is controllably pumped into the annular gap 430, which can provide a pressure of, for example, 80-120 Bar within the annular gap.

The temperature of the contaminated viscous fluid 90 may increase, for example, by 6-14°C as it passes through the device 400' due to the energy dissipated in shearing the viscous material.

Note that other sizes and operating conditions of the device 400' and other contaminated viscous fluids 90 may also be used.

Referring now to FIG. 5 , which is a schematic diagram of a device 500 for continuously filtering contaminants from viscous fluids and including one or more segments of spiral flying fins 540 according to some embodiments of the present invention.

Figure 5 shows a longitudinal section AA' of the device 500 (eg, similar to the longitudinal section AA' defined in Figure 1A).

According to some embodiments, device 500 may include a first cylinder 510 having a first longitudinal center axis 512 and a second cylinder 520 having a second longitudinal center axis 522 . The first cylinder 510 and the second cylinder 520 may overlap such that the first longitudinal center axis 512 coincides with the second longitudinal center axis 522 and an annular gap 530 is formed between the first cylinder 510 and the second cylinder 520 . For example, device 500, first cylinder 510, second cylinder 520, and annular gap 530 may be similar to those described above with respect to Figures 1A, 1B, 1C, 1D, 1E, 1F, 1G, and 1H, respectively. The device 100, the first cylinder 110 and the second cylinder 120 are described.

The first cylinder 510 may be rotatably supported and adapted to rotate about the first longitudinal central axis 512 and relative to the second cylinder 520 (eg, as indicated by arrow 512a in Figure 5). The annular gap 530 between the first cylinder 510 and the second cylinder 520 may be adapted to receive a viscous fluid (eg, a melt of polymer material with contaminants).

The first cylinder 510 may include a plurality of holes 516 disposed along at least a portion of the circumference of the first cylinder 510 . Holes 516 may be provided along at least one longitudinal filter portion 513 of the first cylinder 510 . For example, apertures 516 may be similar to apertures 116 described above with respect to FIGS. 1A, 1B, 1C, 1D, 1E, 1F, 1G, and 1H and 2A, 2B, and 2C, respectively, and/or Slot 216.

According to some embodiments, the first cylinder 510 may include at least one section of a spiral flying fin 540 . Helical flying fins 540 may be disposed along the first longitudinal center axis 512 of the first cylinder 510 and may protrude into the annular gap 530 . The spiral flying fins 540 may be disposed downstream of the longitudinal filter 513 (eg, as shown in FIG. 5 ).

The helical flying fins 540 may create additional suction (eg, forward pumping) for the viscous fluid introduced into the annular gap 530 . In this manner, helical flight fins 540 may set a lower operating pressure range within device 500 (e.g., compared to embodiments without helical flight fins 540 ) and/or help adapt device 500 to Existing extruders are usually adapted to operate under certain pressure conditions.

Referring now to FIGS. 6A and 6B , which are used to continuously filter contaminants from viscous fluids and include one or more sets 640 of longitudinal fins 642 and one or more spiral flight sections according to some embodiments of the present invention. Schematic of device 600 with fins 650.

Figures 6A and 6B show respectively a longitudinal section AA' (eg, similar to the longitudinal section AA' defined in Figure 1A) and a transverse section CC' (defined in Figure 6A) of the device 600.

According to some embodiments, device 600 may include a first cylinder 610 having a first longitudinal center axis 612 and a second cylinder 620 having a second longitudinal center axis 622 . The first cylinder 610 and the second cylinder 620 may overlap such that the first longitudinal center axis 612 coincides with the second longitudinal center axis 622 and an annular gap 630 is formed between the first cylinder 610 and the second cylinder 620 . For example, device 600, first cylinder 610, second cylinder 620, and annular gap 630 may be similar to those described above with respect to Figures 1A, 1B, 1C, 1D, 1E, 1F, 1G, and 1H, respectively. The device 100, the first cylinder 110 and the second cylinder 120 are described.

The first cylinder 610 may be rotatable and adapted to rotate about the first longitudinal central axis 612 and relative to the second cylinder 620 (eg, as indicated by arrow 612a in Figure 5). The annular gap 630 between the first cylinder 610 and the second cylinder 620 may be adapted to receive a viscous fluid (eg, a melt of polymer material with contaminants).

According to some embodiments, the first cylinder 610 may include one or more filter portions 613 along its first longitudinal center axis 612. For example, FIG. 6A shows a device 600 having two filter parts 613: a first filter part 613a and a second filter part 613b. Each filter part 613 may include a plurality of holes 616 disposed on the circumference of the first cylinder 610 in the corresponding filter part. For example, apertures 616 may be similar to apertures 116 described above with respect to FIGS. 1A, 1B, 1C, 1D, 1E, 1F, 1G, and 1H and 2A, 2B, and 2C, respectively, and/or Slot 216.

According to some embodiments, the second cylinder 620 may include one or more sets 640 of longitudinal fins 642 . Each of the groups 640 may include one or more longitudinal fins 642 . Each of the longitudinal fins 642 may be similar to the longitudinal fins 440 described above with respect to Figures 4A and 4B, for example.

In some embodiments, each of the groups 640 may be disposed on the second cylinder 620 at a position corresponding to the position of one of the filter portions 613 on the first cylinder 610 . The longitudinal fins 642 of each group 640 may protrude from the second cylinder 620 into the annular gap 630 and face (or substantially face) the corresponding filter portion 613 on the first cylinder 610 . The longitudinal fins 642 of each set 640 may be aligned with the second longitudinal center axis 622 of the second cylinder 620 and/or may extend along at least a portion of the length of the corresponding filter portion 613 .

For example, FIG. 6A shows a device 600 in which the second cylinder 620 includes two groups 640: a first group 640a and a second group 640b of longitudinal fins 642. However, in this embodiment, the first group 640a is disposed at a position along the second cylinder 620 corresponding to the position of the first filter portion 613a on the first cylinder 610, while the second group 640b is disposed along the second cylinder 620. The position of the second cylinder 620 corresponds to the position of the second filter part 613b on the first cylinder 610. However, in this embodiment, each of the first group 640a and the second group 640b includes four longitudinal fins 642: a first longitudinal fin 642a, a second longitudinal fin 642b, and a third longitudinal fin 642c. and a fourth longitudinal fin 642d (eg, as shown in Figure 6B).

In some embodiments, the longitudinal fins 642 or groups 640 may protrude from the second cylinder 620 to provide an increased shear rate space 648 between the tips of the longitudinal fins 642 and the first cylinder 610 . In this manner, the shear rate of the viscous fluid in the increased shear rate space 648 between the tip of the longitudinal fin 642 and the filter portion 613 on the first cylinder 610 can be increased (e.g., compared to without longitudinal fins 642 ). (compared to embodiments of fins 642), which may further facilitate automated cleaning of device 600 (eg, as described above with respect to Figures 4A and 4B).

According to some embodiments, the first cylinder 610 may include at least one section of a spiral flying fin 650 . Helical flying fins 650 may be disposed along the first longitudinal center axis 612 of the first cylinder 610 and may protrude into the annular gap 630 . The spiral flying fin 650 may be similar to the spiral flying fin 540 described above with respect to FIG. 5 , for example.

In various embodiments, the first cylinder 610 may include one or more segments of spiral flying fins 650 located downstream of at least one of the filter portions 613 on the first cylinder 610 . For example, FIG. 6A shows the device 600, which includes: a first section of spiral flying fins 650a, and a second section of spiral flying fins 650b. However, in this embodiment, the first section of spiral flying fins 650a is disposed downstream of the first filter part 613a, and the second section of spiral flying fins 650b is disposed downstream of the second filter part 613b.

The helical flying fins 650 may create additional suction (eg, forward pumping) for the viscous fluid introduced into the annular gap 630 . In this way, the spiral flying fin 650 can be Sets a lower operating pressure range within the device 600 (e.g., compared to embodiments without helical flight fins 650) and/or helps adapt the device 600 to existing extruders that are typically suitable for use in Operate under certain pressure conditions.

Referring now to FIGS. 7A and 7B , which are schematic diagrams of an apparatus 700 for continuously filtering contaminants from a viscous fluid and including a cleaning assembly 740 in accordance with some embodiments of the present invention.

Figure 7A shows a longitudinal section AA' of the device 700 (eg, similar to the longitudinal section AA' defined in Figure 1A). Figure 7B respectively shows a transverse section DD' of device 700 (defined in Figure 7A).

According to some embodiments, device 700 may include a first cylinder 710 having a first longitudinal center axis 712 and a second cylinder 720 having a second longitudinal center axis 722 . The first cylinder 710 and the second cylinder 720 may overlap such that the first longitudinal center axis 712 coincides with the second longitudinal center axis 722 and an annular gap 730 is formed between the first cylinder 710 and the second cylinder 720 . For example, device 700, first cylinder 710, second cylinder 720, and annular gap 730 may be similar to those described above with respect to Figures 1A, 1B, 1C, 1D, 1E, 1F, 1G, and 1H, respectively. The device 100, the first cylinder 110 and the second cylinder 120 are described.

The first cylinder 710 may be rotatably supported and adapted to rotate about the first longitudinal central axis 712 and relative to the second cylinder 720 (eg, as shown by arrow 712a in Figures 7A and 7B). The annular gap 730 between the first cylinder 710 and the second cylinder 720 may be adapted to receive a viscous fluid (eg, a melt of polymer material with contaminants).

The first cylinder 710 may include a plurality of holes 716 disposed along at least a portion of the circumference of the first cylinder 710 . Holes 716 may be provided along at least one longitudinal filter portion 713 of the first cylinder 710 . For example, aperture 716 may be similar to aperture 116 described above with respect to FIGS. 1A, 1B, 1C, 1D, 1E, 1F, 1G, and 1H and 2A, 2B, and 2C, respectively, and/or Slot 216.

According to some embodiments, device 700 may include cleaning assembly 740. Wash assembly 740 may include at least one wash jet 742 . The wash jet 742 may include a plurality of jet holes/slots 744.

In some embodiments, when the first cylinder 710 is disposed within the second cylinder 720, the wash jet 742 may be disposed within the interior 714 of the first cylinder 710 such that the spray holes/slots 744 face the first cylinder. 710 (eg, as shown in Figures 7A and 7B). In some other embodiments, when the second cylinder 720 is disposed within the first cylinder 710, the wash jet 742 may be disposed outside and adjacent (or substantially adjacent to) the first cylinder 710 and in within the casing of the device (e.g., such as the one above Housing 140 as described in Figures 1F and 1G). Wash jet 742 may be sized to extend along at least a portion of longitudinal filter portion 713 having holes 716 and/or along at least a portion of its circumference.

The cleaning assembly 740 may include at least one cleaning tube 746 in fluid communication with the at least one washing injector 742 and adapted to deliver clean viscous fluid to the washing injector 742 . In some embodiments, the clean viscous fluid may be the same viscous fluid cleaned by first cylinder 710 . The clean viscous fluid may be sprayed towards the rotating first cylinder 710 through the spray holes/slots 744 in the wash jet 742, thereby covering a portion of the hole 716 at each point in time and creating a backflow (e.g., in the corresponding portion of the hole in the radial direction of clean viscous fluid). The backflow of clean viscous fluid generated in the hole portion can push contaminants contained in the viscous fluid within the annular gap 730 away from the first cylinder 710 , thereby enhancing the automatic cleaning/cleaning effect of the device 700 .

In some embodiments, cleaning of the perforated surface can be achieved without the use of effective backflow in the hole. The fluid pressure on the "clean" side of the perforated surface can be increased for a defined short period of time, for example such that the pressure on both sides of the perforated surface is substantially equal. For example, clean viscous fluid can be sprayed through spray holes/slots 744 in wash jet 742 until the pressures on both sides of the perforated surface are substantially equal, and then the flow of clean viscous fluid can be controlled to maintain this condition for a desired period of time. . During this time, radial flow of viscous fluid through the perforated surface ceases essentially completely, while tangential flow over the perforated surface on the contaminated fluid side continues. The shear generated near the perforated surface can then keep contaminants adhering to the perforated surface and drift with the flow, thereby cleaning the perforated surface without the use of backflow. In some embodiments, the pressure drop between the high pressure side (contaminated fluid side) and the low pressure side (clean fluid side) of the perforated surface can be reduced to reduce the pressure drop, thereby expanding the automatic cleaning effect of the perforated surface. In some embodiments, the rotational speed of the second cylinder may be accelerated to a given rotational speed for a short period of time and then decelerate to the nominal rotational speed at a lower rate to instantaneously increase the rotational speed due to acceleration. And the cleaning effect is to remove clogged contaminants from the perforations.

In some embodiments, the first cylinder 710 may include a clean viscous fluid outlet 770 for controllably removing clean viscous fluid from the interior of the first cylinder 710 . For example, the clean viscous fluid outlet 770 may be similar to the clean viscous fluid removal device 170 described above with respect to FIG. IF.

In some embodiments, the second cylinder 720 may include an unfiltered viscous fluid outlet 772 for controllably removing unfiltered viscous fluid with contaminants accumulated within the annular gap 730 . For example, the unfiltered viscous fluid outlet 772 may be similar to the unfiltered viscous fluid removal device 172 described above with respect to FIG. IF.

Referring now to FIGS. 8A and 8B , which are schematic diagrams of an apparatus 800 for continuously filtering contaminants from a viscous fluid including a fixed filter element according to some embodiments of the present invention.

8A and 8B show longitudinal section AA' and transverse section BB', respectively, of device 800 (eg, similar to longitudinal section AA' and transverse section BB' defined in FIG. 1A ).

According to some embodiments, device 800 may include a first cylinder 810 having a first longitudinal center axis 812 and a second cylinder 820 having a second longitudinal center axis 822 . The first cylinder 810 and the second cylinder 820 may overlap such that the first longitudinal center axis 812 coincides with the second longitudinal center axis 822 and an annular gap 830 is formed between the first cylinder 810 and the second cylinder 820 . For example, device 800, first cylinder 810, second cylinder 820, and annular gap 830 may be similar to those described above with respect to Figures 1A, 1B, 1C, 1D, 1E, 1F, 1G, and 1H, respectively. The device 100, the first cylinder 110 and the second cylinder 120 are described.

The first cylinder 810 may include a plurality of holes 816 disposed along at least a portion of the circumference of the cylinder 810 . Holes 816 may be provided along at least one longitudinal filter portion 813 of the first cylinder 810 . For example, aperture 816 may be similar to aperture 116 described above with respect to FIGS. 1A, 1B, 1C, 1D, 1E, 1F, 1G, and 1H and 2A, 2B, 2C, and 2D, respectively. and/or slot 216.

The second cylinder 820 may be rotatably supported and adapted to rotate about the second longitudinal central axis 822 relative to the first cylinder 810 (eg, as shown by arrow 822a in Figures 8A and 8B). The annular gap 830 between the first cylinder 810 and the second cylinder 820 may be adapted to receive a viscous fluid (eg, a melt of polymer material with contaminants).

The second cylinder 820 can continuously rotate about its second longitudinal center axis 822 to generate a tangential resistance flow of viscous fluid along its tangential direction within the annular gap 830 . A tangential velocity gradient may thus arise between the rotating second cylinder 820 and the stationary first cylinder 810 . Contaminant particles in the layer away from the surface of the stationary first cylinder 810 may be dragged around the surface of the stationary first cylinder 810 with some tangential velocity when the speed of the stationary first cylinder 810 is zero. A tangential relative motion for self-cleaning is produced in which contaminant particles move tangentially (e.g., along the tangential direction) and longitudinally downward toward the outlet (e.g., longitudinally) and toward the surface of the first cylinder 810 (e.g., , along the radial direction), for example as described above with respect to Figures 1F and 1G. As long as the rotation speed of the second cylinder 820 is maintained close to the shear rate of the first cylinder 810, contamination with a size larger than the hole 816 on the surface of the first cylinder 810 will occur even when contacting the surface of the stationary first cylinder 810. Object particles can also continue their rotational motion.

The rotational speed of the second cylinder 820 and the subsequent tangential resistance flow within the annular gap 830 and/or the tangential relative motion of the automatic cleaning adjacent the first cylinder 810 (e.g., similar to the tangential resistance flow 136a and The tangential relative motion 136b of the automatic cleaning, as described above with respect to FIGS. 1F, 1G, and 1H, respectively) may be adapted to significantly minimize adhesion of contaminants to the first cylinder 810 and significantly minimize obstruction by contaminants. hole 816 (e.g., at least due to the tangential relative motion of the automatic cleaning), thereby producing an automatic cleaning/sweeping effect.

The automatic cleaning/sweeping effect may occur due to the shear rate of the viscous fluid near the surface of the first cylinder 810, which in some embodiments may be determined by at least the rotational speed of the second cylinder 820 and the annular shape. The size of the gap 830 determines.

Generally, the rotational speed of the second cylinder 820 may be controlled to ensure that the tangential velocity of the viscous fluid near the surface of the second cylinder 820 (eg, due to tangential resistance flow within the annular gap 830 ) is significantly higher than that due to the annular gap 830 The average radial velocity of the viscous fluid resulting from the radial flow within (e.g., similar to the radial flow 134a described above with respect to FIGS. 1F, 1G, and 1H).

In various embodiments, first cylinder 810 may be disposed within second cylinder 820 (e.g., as shown in FIGS. 8A and 8B ), or second cylinder 820 may be disposed within first cylinder 810 (e.g., as shown in FIGS. 8A and 8B ). , as described above with respect to Figure 1C).

According to some embodiments, the device 800 may include a rotation assembly including at least a rotation motor. The rotation motor may be coupled to the second cylinder 820 and adapted to rotate the second cylinder 820 at a controlled rotation speed. Apparatus 800 may further include a controller in communication with the rotating assembly. The controller may be configured to control the rotation of the second cylinder 820 through the rotating assembly according to a controlled rotation speed. For example, the rotation assembly and controller may be similar to rotation assembly 150 and controller 160, respectively, described above with respect to FIG. IF.

Referring now to FIGS. 8C and 8D , which are schematic diagrams of an apparatus 800 for continuously filtering contaminants from a viscous fluid including a fixed filter element and one or more longitudinal fins 840 according to some embodiments of the present invention.

8C and 8D show longitudinal section AA' and transverse section BB', respectively, of device 800 (eg, similar to longitudinal section AA' and transverse section BB' defined in FIG. 1A ).

According to some embodiments, the second cylinder 820 may include one or more longitudinal fins 840. For example, longitudinal fins 840 may be similar to longitudinal fins 440 described above with respect to Figures 4A and 4B.

Longitudinal fins 840 may protrude from the second cylinder 820 into the annular gap 830 and toward (or substantially toward) the first cylinder 810 . The longitudinal fins 840 may be aligned with the second longitudinal center axis 822 of the second cylinder 820 and/or may extend in the longitudinal direction of the second cylinder 820 along at least a portion of the length of the second cylinder 820 .

The longitudinal fin 840 may protrude from the second cylinder 820 to provide a space 848 for increased shear rate between the tip of the longitudinal fin 840 and the first cylinder 810 . In this manner, the shear rate of the viscous fluid in the increased shear rate space 848 between the tip of the longitudinal fin 840 and the first cylinder 810 can be increased (e.g., compared to the embodiment without the longitudinal fin 840 Compared to ), this may further facilitate automatic cleaning/cleaning of the first cylinder 810 .

Referring now to FIG. 8E , which is a schematic diagram of a device 800 for continuously filtering contaminants from viscous fluids including a fixed filter element and one or more sections of spiral flying fins 850 according to some embodiments of the present invention.

According to some embodiments, the second cylinder 820 may include at least one section of helical flying fin 850 . Helical flying fins 850 may be disposed along the second longitudinal center axis 822 of the second cylinder 820 and may protrude into the annular gap 830 . The spiral flying fins 850 may be disposed downstream of the longitudinal filter part 813 . The spiral flying fin 850 may be similar to the spiral fin 850 described above with respect to FIG. 5 , for example.

The spiral flying fins 850 can generate additional suction for the viscous fluid introduced into the annular gap 830 . In this manner, helical flight fins 850 may set a lower operating pressure range within device 800 (e.g., compared to embodiments without helical flight fins 850 ) and/or help adapt device 800 to Existing extruders are generally adapted to operate under certain pressure conditions.

Referring now to FIGS. 8F and 8G , a device for continuously filtering contaminants from a viscous fluid according to some embodiments of the present invention includes a fixed filter element and includes one or more sets 842 of longitudinal fins 840 and one or more A schematic diagram of a device 800 with spiral flying fins 850.

8F and 8G respectively show a longitudinal section AA' (eg, similar to the longitudinal section AA' defined in FIG. 1A ) and a transverse section CC' (defined in FIG. 8A ) of the device 800 .

According to some embodiments, the first cylinder 810 may include one or more longitudinal filters 813. For example, the first cylinder 810 may include: a first longitudinal filter portion 813a; and a second longitudinal filter portion 813b (eg, as shown in FIG. 8F).

According to some embodiments, the second cylinder 820 may include one or more sets 842 of longitudinal fins 840 . In some embodiments, each of the groups 842 may be disposed on the second cylinder 820 at a position corresponding to the position of one of the filters 813 on the first cylinder 810 . The longitudinal fins 840 of each of the sets 842 may protrude from the second cylinder 820 into the annular gap 830 and face (or substantially face) the corresponding filter portion 813 on the first cylinder 810 . The longitudinal fins 840 of each set 842 may be aligned with the second longitudinal center axis 822 of the second cylinder 820 and/or may extend along at least a portion of the length of the respective filter portion 813 .

For example, Figure 8F shows a device 800 in which the second cylinder 820 includes two sets 842: a first set 842a and a second set 842b of longitudinal fins 840. However, in this embodiment, the first group 842a is disposed at a position along the second cylinder 820 corresponding to the position of the first filter portion 813a on the first cylinder 810, while the second group 842b is disposed along the second cylinder 820. The position of the two cylinders 820 corresponds to the position of the second filter part 813b on the first cylinder 810. However, in this embodiment, each of the first group 842a and the second group 842b includes four longitudinal fins 840: a first longitudinal fin 840a, a second longitudinal fin 840b, and a third longitudinal fin 840c. and a fourth longitudinal fin 840d (eg, as shown in Figure 8G).

According to some embodiments, the second cylinder 820 may include at least one section of the helical flying fin 850 along the second longitudinal center axis 822 of the second cylinder 820 .

In various embodiments, the second cylinder 820 may include one or more segments of spiral flying fins 850 located downstream of one or more of the filter portions 813 on the first cylinder 810 . For example, FIG. 8F shows the device 800, which includes: a first section of spiral flying fins 850a, and a second section of spiral flying fins 850b. However, in this embodiment, the first section of spiral flying fins 850a is disposed downstream of the first filter part 813a, and the second section of spiral flying fins 850b is disposed downstream of the second filter part 813b.

Reference is now made to Figure 8H, which is an enlarged view of the cross-section of Figure 8G emphasizing the flow properties of contaminated viscous fluid in the gap formed between the fin and the perforated surface, in accordance with an embodiment of the present invention. Cylinder 820 may be rotatably supported and adapted to rotate about second longitudinal central axis 822 and relative to first cylinder 810 (eg, as shown by arrow 822a in Figures 8A and 8B). The annular gap 830 between the first cylinder 810 and the second cylinder 820 may be adapted to receive a viscous fluid (eg, a melt of polymer material with contaminants). The second cylinder 820 can be continuously rotated about its second longitudinal center axis 822 to generate a tangential resistance flow of viscous fluid within the annular gap 830 along its tangential direction, particularly in high shear zones, similar to that described with respect to Figures 8A to The manner described in Figure 8G. The rotating tip of the fin of the second cylinder 820 A tangential velocity gradient may thus occur between the end and the stationary first cylinder 810 . According to some embodiments, the second cylinder 820 may include one or more fins 840 extending from the second cylinder 820 toward the first cylinder 810 such that when the second cylinder 820 is rotated relative to the first cylinder 810 Their tips adjacent the perforated surface of the first cylinder 810 define an annular gap 830 . Operating and structural parameters, such as the viscosity of the molten contamination fluid, the relative rotational speed of the second cylinder 820 relative to the first cylinder 810 , and the size of the annular gap 830 may be controlled and/or set to ensure contamination in the annular gap 830 The flow conditions of the fluid remain essentially laminar. 1G and 1H The radial flow 134a, tangential resistance flow 136a and longitudinal flow 132a are essentially the same.

Referring now to Figure 9, which is a schematic diagram of a method 900 for continuously filtering contaminants from a viscous fluid in accordance with some embodiments of the present invention. It will be apparent to those of ordinary skill in the art that preferred operating conditions for embodiments of the present invention are those that maintain laminar flow (or substantially laminar flow) of molten contaminant fluid in the gap between the fins and the first cylinder. Flow, such as annular gap 830 as discussed above, will be apparent.

Method 900 may be performed by means of a device for continuously filtering contaminants from a viscous fluid, and the device may be configured to perform method 900 . For example, method 900 may be performed by apparatus 100 (eg, as described above with respect to FIGS. 1A, 1C, 1D, 1E, 1F, 1G, and 1H), apparatus 200 (eg, as described above with respect to FIGS. 2A, 1H). 2B, 2C, and 2D), apparatus 300 (e.g., as described above with respect to FIGS. 3A and 3B), apparatus 400 (e.g., as described above with respect to FIGS. 4A and 4B), apparatus 500 (e.g., as described above with respect to Figure 5), device 600 (e.g., as described above with respect to Figures 6A and 6B), device 700 (e.g., as described above with respect to Figures 7A and 7B), and/or device 800 (e.g., as described above with respect to Figures 7A and 7B) , as described above with respect to Figures 8A, 8B, 8C, 8D, 8E, 8F and 8G). Note that the method 900 is not limited to the flowchart shown in FIG. 9 and the corresponding description. For example, in various embodiments, method 900 need not move through the blocks or stages of each diagram, or in the exact same order as depicted in the diagrams and descriptions.

According to some embodiments, method 900 may include pumping the contaminated viscous fluid between an unperforated surface and a perforated surface disposed substantially parallel to each other with a defined gap, thereby forcing the contaminated viscous fluid to move in a longitudinal direction along the gap. (Stage 902).

For example, as described above with respect to Figures 1A-1H, 2A-2D, 3A-3B, 4A-4B, 5, 6A-6B, 7A-7B, and 8A-8G As mentioned above, the perforated surface may be formed into a first cylinder having a first longitudinal central axis, and the non-perforated surface may be formed into a first cylinder having a first longitudinal central axis. A second cylinder having a second longitudinal central axis. In this embodiment, however, the second longitudinal center axis of the second cylinder may coincide with the first longitudinal center axis of the first cylinder to provide an annular gap therebetween. In this embodiment, however, the relative velocity direction may be tangential to the surface and perpendicular to the second longitudinal central axis of the second cylinder and the first longitudinal central axis of the first cylinder.

According to some embodiments, method 900 may include moving the unperforated surface and the perforated surface relative to each other at a defined relative velocity, thereby forcing the contaminated viscous fluid to move in a direction substantially parallel to the relative velocity, such that in a direction substantially parallel to the relative velocity, A shear rate is generated in the contaminated viscous fluid in the direction close to the perforated surface (stage 904).

For example, the first cylinder may be rotated relative to the second cylinder or the second cylinder (eg, as described above with respect to Figures 1A-1H, 2A-2D, 3A-3B, 4A-4B, Figures 5. As described in Figures 6A and 6B, Figures 7A and 7B) may rotate relative to the first cylinder (eg, as described above with respect to Figures 8A to 8G).

According to some embodiments, method 900 may include providing pressure to the contaminated viscous fluid, thereby forcing the contaminated viscous fluid to move in a direction substantially perpendicular to the relative velocity (stage 906). For example, as described above with respect to Figures 1F and 1H.

According to some embodiments, method 900 may include adjusting relative velocities, pressures, and average shear rates within the gap to force one layer of contaminated viscous fluid adjacent the perforated surface to flow through the through holes of the perforated surface to another layer of the perforated surface. side, while contaminants with dimensions larger than the through holes are forced to flow in a direction substantially parallel to the relative velocity (stage 908). For example, as described above with respect to Figures IF-1H. For example, the perforations may be elongated slots 216 as described above with respect to Figures 2A-2D.

According to some embodiments, method 900 may include setting the relative velocity, pressure, and average shear rate within the gap such that the average velocity of the contaminated viscous fluid in a direction substantially parallel to the relative velocity is greater than the average velocity of the contaminated viscous fluid toward the perforated surface ( i.e. in the radial direction) is at least 50 (e.g. 100-3000) times higher such that the average shear rate within the gap is at least 50 1/s (e.g. 100-500 1/s) (stage 910). For example, as described above with respect to Figures IF-1H.

According to some embodiments, method 900 may include removing pressure from another part of the perforated surface during actual filtration of the contaminated viscous fluid while the filter is in filtration mode or by setting the pressure drop across the perforated surface to be very low. One side provides a fluid pressurized injection of filtered viscous fluid through the holes toward the side with the contaminated viscous fluid to remove contaminant particles accumulated on the perforated surface, allowing drift forces to sweep away the captured contaminants (Stage 912). For example, as described above with respect to Figures 7A and 7B.

In the above description, the embodiments are examples or implementations of the invention. The various appearances of "one embodiment", "an embodiment", "certain embodiments" or "some embodiments" do not necessarily all refer to the same implementation example. Although various features of the invention may be described in the context of a single embodiment, these features may also be provided individually or in any suitable combination. Rather, although the invention may be described in the context of separate embodiments for clarity, the invention may also be practiced in a single embodiment. Certain embodiments of the invention may include features from different embodiments disclosed above, and certain embodiments may combine elements from other embodiments disclosed above. Disclosure of elements of the invention in the context of a particular embodiment should not be construed as limiting their use in the particular embodiment only. Furthermore, it is to be understood that the invention may be embodied or practiced in various ways and that the invention may be practiced in some embodiments in addition to those outlined in the above description.

The present invention is not limited to those figures or corresponding descriptions. For example, flow does not need to move through each diagram's boxes or states, or in the exact same order as the diagrams and descriptions. Unless otherwise defined, technical and scientific terms used herein have meanings commonly understood by one of ordinary skill in the art to which this invention belongs. Although the present invention has been described with respect to a limited number of embodiments, these should not be construed as limitations on the scope of the invention but rather as examples of some preferred embodiments. Other possible variations, modifications and applications are also within the scope of the invention. Accordingly, the scope of the invention should not be limited by what has been described thus far, but rather by the scope of the appended patent applications and their legal equivalents.

90: Pollutants, viscous fluids, contaminated viscous fluids

92: Clean viscous fluid

94: Elongated contaminants

100,100':Device

110:First cylinder

110a: Section

110b: Part

111a:Inner surface

111b:Outer surface

112: First longitudinal center axis

112a:arrow

113: Longitudinal filtering part, filtering part

116:hole

116a,116b: Opening

120:Second cylinder

120a: first end

120b:Second end

122: Second longitudinal center axis

124: Entrance opening

130: Annular gap

130a: first end

130b:Second end

132:Portrait direction

132a:Longitudinal flow

134: Radial direction

134a: Radial flow

136: Tangential direction

136a: Tangential resistance flow, arrow

136b: Tangential relative motion of automatic cleaning

140: Shell

150: Rotating component

160:Controller

170: Clean viscous fluid removal device

172: Unfiltered viscous fluid removal device

180: Cooling unit

200:Device

210:First cylinder

210a: Section

212: First longitudinal center axis

212a: Arrow

216:Slot

216a: long size

216b: short size

218:Longitudinal filter section

218a:distance

219: Groove

220:Second cylinder

222: Second longitudinal center axis

230: Annular gap

232:Portrait orientation

300:Device

310:First cylinder

310a: first end

310b:Second end

312: First longitudinal center axis

312a: Arrow

316:hole

320:Second cylinder

320a: first end

320b:Second end

322: Second longitudinal center axis

330: Annular gap

400,400':Device

402: Shell

404: Entrance opening

406: Contaminated viscous fluid removal device

408: Clean viscous fluid removal device

410:First cylinder

410a:Outer surface

410b:Inner surface

412: First longitudinal center axis

412a: Arrow

413: Longitudinal filtering section, filtering section

416: Hole (slot)

416a, 416b: Opening

420:Second cylinder

422: Second longitudinal center axis

430: Annular gap

440:Longitudinal fins

448: Space for increased shear rate

450: Rotating component

460:Controller

500:Device

510:First cylinder

512: First longitudinal center axis

512a: Arrow

513: Longitudinal filter section

516:hole

520:Second cylinder

522: Second longitudinal center axis

530: Annular gap

540: Spiral flying fins

600:Device

610:First cylinder

612: First longitudinal center axis

612a: Arrow

613:Filtering Department

613a: First filtering part

613b: Second filtering part

616:hole

620:Second cylinder

622: Second longitudinal center axis

630: Annular gap

640:Group

640a: Group 1

640b:The second group

642:Longitudinal fins

642a: First longitudinal fin

642b: Second longitudinal fin

642c: Third longitudinal fin

642d: Fourth longitudinal fin

648: Space for increased shear rate

650: Spiral flying fins

650a: The first section of spiral flying fin

650b: The second section of spiral flying fins

700:Device

710:First cylinder

712: First longitudinal center axis

712a: Arrow

713: Longitudinal filter section

714: Interior of first cylinder 710

716:hole

720:Second cylinder

722: Second longitudinal center axis

730: Annular gap

740: Cleaning components

742: Washing jet

744: Jet hole/slot

746: Cleaning pipe

770: Clean viscous fluid outlet

772: Unfiltered viscous fluid outlet

800:Device

810:First cylinder

812: First longitudinal center axis

813: Longitudinal filter section, filter section

813a: first longitudinal filter part, first filter part

813b: Second longitudinal filter part, second filter part

816:hole

820:Second cylinder

822: Second longitudinal center axis

822a: Arrow

830: Annular gap

830': dashed circle

840:Longitudinal fins

840a: First longitudinal fin

840b: Second longitudinal fin

840c: Third longitudinal fin

840d: Fourth longitudinal fin

842:Group

842a: Group 1

842b:Group 2

848: Room for increased shear rate

850: Spiral flying fins

850a: The first section of spiral flying fin

850b: Second section of spiral flying fin

900:Method

902,904,906,908,910,912: stage

For a better understanding of embodiments of the invention and to show how to implement embodiments of the invention, reference will now be made, by way of illustration only, to the accompanying drawings, in which like numerals refer to corresponding elements or parts throughout. In the diagram attached to the article: 1A, 1B, 1C, 1D and 1E are schematic diagrams of a device for continuously filtering contaminants from viscous fluids according to some embodiments of the present invention; 1F and 1G are schematic diagrams of a more detailed aspect of a device for continuously filtering contaminants from viscous fluids according to some embodiments of the present invention, and further illustrate the operation process of the device; 1H is a schematic partial diagram of a relative velocity component of a viscous fluid relative to a hole in a first cylinder of a device for continuously filtering contaminants from a viscous fluid according to an embodiment of the present invention; 2A, 2B and 2C are schematic diagrams of a device for continuously filtering contaminants from viscous fluids and including a first cylinder with a plurality of slots according to some embodiments of the present invention; Figure 2D is a schematic diagram of a device for continuously filtering contaminants from viscous fluids and including a first cylinder with a plurality of grooves according to some embodiments of the present invention; 3A and 3B are schematic diagrams of various configurations of a device for continuously filtering contaminants from viscous fluids and including at least one tapered cylinder according to some embodiments of the present invention; 4A, 4B, 4C and 4D are schematic diagrams of a device for continuously filtering contaminants from viscous fluids and including one or more longitudinal fins according to some embodiments of the present invention; Figure 5 is a schematic diagram of a device for continuously filtering pollutants from viscous fluids and including one or more sections of spiral flying fins according to some embodiments of the present invention; Figures 6A and 6B are schematic diagrams of a device for continuously filtering pollutants from viscous fluids and including one or more sets of longitudinal fins and one or more sections of spiral flying fins according to some embodiments of the present invention; 7A and 7B are schematic diagrams of a device for continuously filtering contaminants from viscous fluids and including a cleaning component according to some embodiments of the present invention; 8A and 8B are schematic diagrams of a device for continuously filtering contaminants from viscous fluids including fixed filter elements according to some embodiments of the present invention; 8C and 8D are schematic diagrams of a device for continuously filtering contaminants from viscous fluids including a fixed filter element and one or more longitudinal fins according to some embodiments of the present invention; Figure 8E is a schematic diagram of a device for continuously filtering pollutants from viscous fluids including a fixed filter element and one or more sections of spiral flying fins according to some embodiments of the present invention; 8F and 8G are a device for continuously filtering pollutants from viscous fluids according to some embodiments of the present invention, including a fixed filter element and one or more sets of longitudinal fins and one or more sections of spiral flying fins. schematic diagram; 8H is an enlarged view of the transverse cross-section of FIG. 8G emphasizing the flow properties of contaminated viscous fluid in the gap formed between the fin and the perforated surface, in accordance with an embodiment of the present invention; and Figure 9 is a schematic diagram of a method for continuously filtering contaminants from viscous fluids. It should be understood that for simplicity and clarity of illustration, the elements shown in the figures are not necessarily drawn to scale. For example, the dimensions of some elements may be exaggerated relative to other elements for clarity. Furthermore, where deemed appropriate, reference symbols in the drawings may be repeated to indicate correspondence.

100:Device

110:First cylinder

112: First longitudinal center axis

112a:arrow

120:Second cylinder

122: Second longitudinal center axis

130: Annular gap

Claims (65)

A method for continuously filtering contaminants from a contaminated viscous fluid having a viscosity ranging from 0.1 Pa‧sec to 10,000Pa‧sec. The method includes: The contaminated viscous fluid is pumped between the perforated surface and a perforated surface, thereby forcing the contaminated viscous fluid to move in a longitudinal direction along the gap; causing the non-perforated surface and the perforated surface to move at a defined relative speed to each other Relative movement, thereby forcing the contaminated viscous fluid to move in a direction substantially parallel to the relative velocity with a Reynolds number (Re) < 1 and a smooth, vortex-free laminar flow, such that the direction is substantially parallel to the relative velocity. Producing a shear rate in the contaminated viscous fluid adjacent the perforated surface; providing pressure to the contaminated viscous fluid thereby forcing the contaminated viscous fluid to move in a direction substantially perpendicular to the relative velocity; and Adjusting the relative velocity, the pressure, and an average shear rate within the gap to force a layer of the contaminated viscous fluid adjacent to the perforated surface to flow through the through holes of the perforated surface to the other side of the perforated surface , and contaminants with a size larger than the through holes are forced to flow in a direction substantially parallel to the relative velocity, where the Reynolds number (Re) is the ratio of inertial force and viscous force. The method of claim 1, further comprising setting the relative velocity, the pressure, and the average shear rate in the gap such that the contaminated viscous fluid has an average velocity in a direction substantially parallel to the relative velocity. At least 50 times greater than an average velocity of the contaminated viscous fluid towards the perforated surface, such that the average shear rate in the gap is at least 50 1/sec. The method of claim 1 or 2, further comprising: when the filter is in the filtration mode, during actual filtration of the contaminated viscous fluid, by passing the through holes from the other side of the perforated surface to the One side of the contaminated viscous fluid provides a fluid pressurized injection of filtered viscous fluid to remove contaminant particles accumulated on the perforated surface. The method of claim 1, wherein the through holes are slots each having a long dimension and a short dimension. The method of claim 4, the slots being substantially aligned along their long dimensions substantially perpendicular to the relative velocity. The method of claim 4, wherein the perforated surface includes a plurality of grooves, wherein a depth of the grooves is smaller than a short dimension of the slots. The method of claim 6, wherein at least one of the grooves spans at least one of the slots. The method of claim 1, wherein: the perforated surface is shaped into a first cylinder with a first longitudinal center axis, and the non-perforated surface is shaped into a second cylinder with a second longitudinal center axis ;The through holes are arranged along at least one longitudinal filter portion along a circumference of the first cylinder; the second longitudinal central axis of the second cylinder coincides with the first longitudinal central axis of the first cylinder, to provide an annular gap therebetween; and the relative velocity is tangential to the surface and perpendicular to the second longitudinal central axis of the second cylinder and the first longitudinal central axis of the first cylinder. The method of claim 8, wherein the first cylinder is disposed within the second cylinder. The method of claim 8, wherein the second cylinder is disposed within the first cylinder. The method of claim 8, further comprising rotating the first cylinder about a common longitudinal center axis. The method of claim 8, further comprising rotating the second cylinder about a common longitudinal central axis. The method of claim 8, wherein the first cylinder gradually becomes narrower along the first longitudinal central axis such that the annular gap decreases along the first longitudinal central axis. The method of claim 8, wherein the second cylinder gradually becomes narrower along the second longitudinal central axis such that the annular gap decreases along the second longitudinal central axis. The method of claim 8, wherein the second cylinder includes at least one longitudinal fin protruding from the second cylinder into the annular gap and toward the first cylinder, the at least one longitudinal fin and The second longitudinal central axis is aligned and extends along at least a portion of a length of the at least one longitudinal filter portion. The method of claim 8, wherein one of the first cylinder or the second cylinder includes at least one section of spiral flying fins arranged along the corresponding longitudinal central axis and located downstream of the at least one longitudinal filter part , the spiral flying fin protrudes into the annular gap. A device for continuously filtering pollutants from viscous fluids. The contaminated viscous fluid has a viscosity range of 0.1 Pa·sec to 10,000Pa·sec. The device includes: a first cylinder with a first longitudinal center The axis includes at least one longitudinal filter portion including a plurality of holes along its circumference; and a second cylinder having a second longitudinal center axis coincident with the first longitudinal center axis of the first cylinder. a longitudinal central axis; and wherein the first cylinder is adapted to overlap and rotate relative to the second cylinder such that an annular gap is formed between the first cylinder and the second cylinder, wherein the annular gap is adapted to For receiving the viscous fluid, wherein the device further includes a rotation component including at least one rotation motor coupled to the first cylinder and adapted to rotate the first cylinder at a predetermined rotation speed; and a controller in communication with the rotating component, the controller configured to control the rotation of the first cylinder through the rotating component according to the predetermined rotation speed, wherein the controller is configured to adjust the non-perforated surface and the perforated surface to A defined relative velocity moves relative to each other, thereby forcing the contaminated viscous fluid to move in a direction substantially parallel to the relative velocity with a Reynolds number (Re) < 1 and a smooth, eddy-free laminar flow, such that it is substantially parallel to the relative velocity. producing a shear rate in the contaminated viscous fluid near the perforated surface in the direction of relative velocity, and Among them, the Reynolds number (Re) is the ratio of inertial force and viscous force. The device of claim 17, wherein the first cylinder is disposed within the second cylinder. The device of claim 17, wherein the second cylinder is disposed within the first cylinder. The device of claim 17, wherein the holes are slots, each slot having a long dimension and a short dimension. The device of claim 20, wherein the slots are substantially aligned along their long dimensions with the first longitudinal central axis of the first cylinder. The device of claim 20, wherein the first cylinder further includes a plurality of grooves along its circumference, wherein a depth of the grooves is smaller than a short dimension of the slots. The device of claim 22, wherein at least one of the grooves spans at least one of the slots. The device of claim 17, wherein the at least one longitudinal filter portion is disposed at a predetermined distance downstream of a first end of the first cylinder. The device of claim 17, wherein the first cylinder gradually narrows along the first longitudinal central axis such that the annular gap decreases along the first longitudinal central axis. The device of claim 17, wherein the second cylinder gradually narrows along the second longitudinal center axis such that the annular gap decreases along the second longitudinal center axis. The device of claim 17, wherein the second cylinder includes at least one longitudinal fin protruding from the second cylinder into the annular gap and toward the first cylinder, the at least one longitudinal fin and The second longitudinal central axis is aligned and extends along at least a portion of a length of the at least one longitudinal filter portion. The device of claim 17, wherein the first cylinder includes at least one section of spiral flying fins disposed along the first longitudinal central axis, and the spiral flying fins protrude into the annular gap. The device of claim 17, further comprising a cleaning assembly, the cleaning assembly including: at least one washing injector including a plurality of injection holes/slots; and a cleaning pipe in fluid communication with the at least one washing injector, and adapted to deliver a clean viscous fluid to the at least one wash jet; wherein the at least one wash jet is configured and sized to extend along at least a portion of the at least one longitudinal filter portion of the first cylinder, and The clean viscous fluid is adapted to be sprayed towards the rotating first cylinder from the clean viscous side of the rotating first cylinder through its hole towards the other side of the rotating first cylinder. A device for continuously filtering pollutants from viscous fluids. The contaminated viscous fluid has a viscosity range of 0.1 Pa·sec to 10,000Pa·sec. The device includes: a first cylinder with a first longitudinal center The axis includes at least one longitudinal filter portion including a plurality of holes along a circumference thereof; a second cylinder having a second longitudinal center axis coincident with the first longitudinal center axis of the first cylinder; a longitudinal central axis, wherein the first cylinder is adapted to overlap and rotate relative to the second cylinder such that an annular gap is formed between the first cylinder and the second cylinder, wherein the annular gap is adapted to receive The viscous fluid; at least one set of longitudinal fins, disposed on the second cylinder at a position corresponding to the position of the at least one longitudinal filter portion on the first cylinder, wherein the at least one set of longitudinal fins including at least one longitudinal fin protruding from the second cylinder into the annular gap and toward the first cylinder, the at least one longitudinal fin being aligned with the second longitudinal central axis and along the at least one longitudinal filter portion extending at least a portion of a length; and at least a section of helical flying fins disposed along the first longitudinal center axis of the first cylinder and protruding into the annular gap, wherein the device further includes a rotating assembly, including At least one rotation motor coupled to the first cylinder and adapted to rotate the first cylinder at a predetermined rotation speed; and a controller in communication with the rotating component, the controller configured to control the rotation of the first cylinder through the rotating component according to the predetermined rotation speed, wherein the controller is configured to adjust the non-perforated surface and the perforated surface to A defined relative velocity moves relative to each other, thereby forcing the contaminated viscous fluid to move in a direction substantially parallel to the relative velocity with a Reynolds number (Re) < 1 and a smooth, eddy-free laminar flow, such that it is substantially parallel to the relative velocity. The direction of relative velocity produces a shear rate in the contaminated viscous fluid near the perforated surface, and wherein the Reynolds number (Re) is the ratio of inertial force to viscous force. A device for continuously filtering pollutants from viscous fluids. The contaminated viscous fluid has a viscosity range of 0.1 Pa·sec to 10,000Pa·sec. The device includes: a first cylinder with a first longitudinal center The axis includes at least one longitudinal filter portion including a plurality of holes along a circumference thereof; and a second cylinder having a first longitudinal center axis coincident with the first longitudinal center axis of the first cylinder. two longitudinal central axes; and wherein the second cylinder is adapted to overlap and rotate relative to the first cylinder such that an annular gap is formed between the first cylinder and the second cylinder, wherein the annular gap adapted to receive the viscous fluid, wherein the device further includes a rotation assembly including at least one rotation motor coupled to the second cylinder and adapted to rotate the second cylinder at a predetermined rotation speed; and a controller in communication with the rotating component, the controller configured to control the rotation of the second cylinder through the rotating component according to the predetermined rotation speed, wherein the controller is configured to adjust the non-perforated surface and the perforated surface Move relative to each other at a defined relative velocity, thereby forcing the contaminated viscous fluid to move in a direction substantially parallel to the relative velocity with a Reynolds number (Re) < 1 and a smooth, eddy-free laminar flow, such that it is substantially parallel to The direction of the relative velocity produces a shear rate in the contaminated viscous fluid close to the perforated surface, and wherein the Reynolds number (Re) is the ratio of inertial force to viscous force. The device of claim 31, wherein the first cylinder is disposed within the second cylinder. The device of claim 31, wherein the second cylinder is disposed within the first cylinder. The device of claim 31, wherein the holes are slots, each slot having a long dimension and a short dimension. The device of claim 34, wherein the slots are substantially aligned along their long dimensions with the first longitudinal central axis of the first cylinder. The device of claim 34, wherein the first cylinder further includes a plurality of grooves along its circumference, wherein a depth of the grooves is smaller than a short dimension of the slots. The device of claim 36, wherein at least one of the grooves spans at least one of the slots. The device of claim 31, wherein the at least one longitudinal filter portion is disposed at a predetermined distance downstream of a first end of the first cylinder. The device of claim 31, wherein the first cylinder gradually narrows along the first longitudinal central axis such that the annular gap decreases along the first longitudinal central axis. The device of claim 31, wherein the second cylinder gradually narrows along the second longitudinal central axis such that the annular gap decreases along the second longitudinal central axis. The device of claim 31, wherein the second cylinder includes at least one longitudinal fin protruding from the second cylinder into the annular gap and toward the first cylinder, the at least one longitudinal fin and The second longitudinal central axis is aligned and extends along at least a portion of a length of the at least one longitudinal filter portion. The device of claim 31, wherein the second cylinder includes at least one section of spiral flying fins disposed along the first longitudinal central axis. A device for continuously filtering contaminants from viscous fluids with a viscosity ranging from 0.1Pa‧sec to 10,000Pa‧sec. The device includes: a first cylinder having a first longitudinal center axis and including at least one longitudinal filter portion including a plurality of holes along its circumference; a second cylinder having a diameter similar to that of the first cylinder The first longitudinal central axis coincides with a second longitudinal central axis, wherein the second cylinder is adapted to overlap and rotate relative to the first cylinder such that a gap is formed between the first cylinder and the second cylinder. an annular gap, wherein the annular gap is adapted to receive the viscous fluid; at least one set of longitudinal fins, disposed on the second cylinder at a position opposite to the position of the at least one longitudinal filter portion on the first cylinder on, wherein the at least one set of longitudinal fins includes at least one longitudinal fin protruding from the second cylinder into the annular gap and toward the first cylinder, the at least one longitudinal fin being aligned with the second longitudinal center axis aligned and extending along at least a portion of a length of the at least one longitudinal filter portion; and at least one section of spiral flying fins disposed along the second longitudinal center axis of the second cylinder and protruding into the annular gap, Wherein, the device further includes a rotation component, including at least one rotation motor, the rotation motor is coupled to the second cylinder and is adapted to rotate the second cylinder at a predetermined rotation speed; and a controller, and the rotation The components are connected, and the controller is configured to control the rotation of the second cylinder through the rotating component according to the predetermined rotation speed, wherein the controller is configured to adjust the non-perforated surface and the perforated surface to move relative to each other at a defined relative speed. , thereby forcing the contaminated viscous fluid to move in a direction substantially parallel to the relative velocity with a Reynolds number (Re) < 1 and a smooth, eddy-free laminar flow, so that it approaches in the direction substantially parallel to the relative velocity. A shear rate is generated in the contaminated viscous fluid on the perforated surface, and the Reynolds number (Re) is the ratio of inertial force to viscous force. A method for continuously filtering pollutants from contaminated viscous fluids with a viscosity ranging from 0.1 Pa‧s to 10,000Pa‧s. The method includes: Pumping the contaminated viscous fluid between an unperforated surface and a perforated surface disposed substantially parallel to each other defining a first gap, thereby forcing the contaminated viscous fluid to move in a longitudinal direction along the first gap ; Make the non-perforated surface and the perforated surface move relative to each other at a defined relative speed, thereby forcing the contaminated viscous fluid to flow along a Reynolds number (Re) < 1 and with a smooth, eddy-free laminar flow substantially parallel to the relative speed moves in a direction such that a shear rate is generated in the contaminated viscous fluid close to the perforated surface in the direction substantially parallel to the relative velocity; wherein the perforated surface is shaped to have a first longitudinal center axis a first cylinder, and the unperforated surface is formed as a second cylinder having a second longitudinal center axis coincident with the first longitudinal center axis, and the first cylinder overlaps the second cylinder, and wherein the relative speed is a rotational speed and the first gap is an annular gap, and wherein the second cylinder includes one or more longitudinal fins extending from the second cylinder toward the first cylinder. The perforated surface protrudes into the first gap, thereby forming a second gap between the distal ends of the fins and the perforated surface, the second gap being smaller than the first gap; providing the contaminated viscous fluid with pressure, thereby forcing the contaminated viscous fluid to move in a direction substantially perpendicular to the relative velocity; and adjusting the relative velocity, the pressure, and an average shear rate at the second gap to force adjacent the perforated surface A layer of the contaminated viscous fluid flows through the through holes of the perforated surface to the other side of the perforated surface, while contaminants larger than the through holes are forced to flow in a direction substantially parallel to the relative velocity , wherein the relative velocity is tangent to the surfaces of the first cylinder and the second cylinder and perpendicular to the second longitudinal central axis of the second cylinder and the first longitudinal central axis of the first cylinder , and where the Reynolds number (Re) is the ratio of inertial force to viscous force. The method of claim 44, further comprising setting the relative velocity, the pressure, and the average shear rate in the second gap such that the contaminated viscous fluid is substantially parallel to An average velocity in the relative velocity direction is at least 50 times higher than an average velocity of the contaminated viscous fluid toward the perforated surface, so that the average shear rate in the second gap is at least 50 1/s. The method of claim 44 or 45, wherein the through-holes are slots each having a long dimension and a short dimension, and wherein the long dimensions of the slots are substantially aligned and substantially perpendicular to the opposite speed and parallel to the first longitudinal center axis of the first cylinder. The method of claim 46, wherein the rotational speed of the second cylinder increases with a given rotational speed acceleration within a first period of time, and then decelerates to a nominal rotational speed at a lower rate. speed, thereby instantly increasing the cleaning effect of contaminants falling off the perforated surface. The method of claim 44, further comprising during actual filtration of the contaminated viscous fluid by preferentially increasing the fluid pressure of the filtered viscous fluid on the other side of the perforated surface to that on the other side of the perforated surface having the The pressure of the contaminated fluid on both sides of the contaminated viscous fluid is substantially the same level to remove the contaminant particles accumulated on the perforated surface, and at the same time by filtering the contaminated viscous fluid with the The sides of the contaminated viscous fluid provide a fluid pressurized injection of filtered viscous fluid to maintain the shear rate of the second gap. The method of claim 45, wherein the perforated surface includes a plurality of grooves, wherein a depth of the grooves is less than a short dimension of the slots, and wherein at least one of the grooves spans the at least one of these slots. The method of claim 44, wherein the through holes are provided along at least one longitudinal filtering portion along the circumference and length of the first cylinder. The method of claim 50, wherein the first cylinder is disposed within the second cylinder. The method of claim 50, wherein the second cylinder is disposed within the first cylinder. The method of claim 50, wherein the annular gap is gradually narrowed by at least one of the first cylinders along the first longitudinal center axis and the second cylinder is gradually narrowed along the second longitudinal center axis. , gradually narrows along the common axis of rotation, so that the annular gap decreases along the first longitudinal central axis. The method of claim 50, wherein one of the first cylinder or the second cylinder includes at least one section of spiral flying fins, arranged along the corresponding longitudinal center axis and located at the at least one longitudinal filtering portion. Downstream, the spiral flying fin projects into the annular gap. A device for continuously filtering pollutants from viscous fluids. The contaminated viscous fluid has a viscosity range of 0.1 Pa·sec to 10,000Pa·sec. The device includes: a first cylinder with a first longitudinal center The axis includes at least one longitudinal filter portion including a plurality of holes along its circumference; and a second cylinder having a second longitudinal center axis coincident with the first longitudinal center axis of the first cylinder. longitudinal central axis; wherein the first cylinder is adapted to overlap and rotate relative to the second cylinder such that an annular gap is formed between the first cylinder and the second cylinder, wherein the annular gap is adapted to receiving the viscous fluid, and wherein the second cylinder includes one or more longitudinal fins protruding from the second cylinder toward the perforated surface of the first cylinder into the annular gap such that the fins A second gap is formed between the distal end of the sheet and the perforated surface, the second gap being smaller than the annular gap, wherein the device further includes a rotation assembly including at least one rotation motor coupled to the third one of a cylinder and the second cylinder, and adapted to rotate one of the first cylinder and the second cylinder respectively at a controlled rotation speed; and a controller in communication with the rotating component, The controller is configured to control a relative rotation between the first cylinder and the second cylinder through the rotating component according to the controlled rotation speed, wherein the controller is configured to adjust the non-perforated surface and the perforated surface Move relative to each other at a defined relative velocity, thereby forcing the contaminated viscous fluid to move in a direction substantially parallel to the relative velocity with a Reynolds number (Re) < 1 and a smooth, eddy-free laminar flow, such that it is substantially parallel to The direction of the relative velocity produces a shear rate in the contaminated viscous fluid close to the perforated surface, and wherein the Reynolds number (Re) is the ratio of inertial force to viscous force. The device of claim 55, wherein the first cylinder is disposed within the second cylinder. The device of claim 55, wherein the second cylinder is disposed within the first cylinder. The device of claim 55, wherein the holes are slots each having a long dimension and a short dimension, and wherein the long dimension of the slots is consistent with the first dimension of the first cylinder. The longitudinal center axes are substantially aligned. The device of claim 55, further comprising one or more jets disposed on the other side of the perforated surface, adapted to move from the other side of the perforated surface toward the end of the perforated surface during actual filtration of the contaminated viscous fluid. The contaminated viscous fluid side provides a fluid pressurized injection of filtered viscous fluid. The device of claim 58, wherein the first cylinder further includes a plurality of grooves along its circumference, wherein a depth of the grooves is less than the short dimension of the slots. The device of claim 60, wherein at least one of the grooves spans at least one of the slots. The device of claim 55, wherein the at least one longitudinal filter portion is disposed at a predetermined distance downstream of a first end of the first cylinder. The device of claim 55, wherein the annular gap is gradually narrowed by at least one of the first cylinders along the first longitudinal center axis and the second cylinder is gradually narrowed along the second longitudinal center axis. , gradually narrows along the common axis of rotation, so that the annular gap decreases along the first longitudinal central axis. The device of claim 55, wherein the first cylinder includes at least one section of spiral flying fins disposed along the first longitudinal central axis, the spiral flying fins protruding into the annular gap. The device as claimed in claim 55, further comprising a cleaning component, the cleaning component includes: At least one washing injector includes a plurality of injection holes/slots; and a cleaning pipe in fluid communication with the at least one washing injector and adapted to deliver a clean viscous fluid to the at least one washing injector; wherein the at least one washing injector A wash jet is arranged and dimensioned to extend along at least a portion of the at least one longitudinal filter portion of the first cylinder and is adapted to pass from the clean viscous fluid side of the rotating first cylinder towards the rotating The hole on the other side of the first cylinder sprays the clean viscous fluid toward the rotating first cylinder.