CN112497703A

CN112497703A - Double-column non-silk screen filter

Info

Publication number: CN112497703A
Application number: CN202011382172.1A
Authority: CN
Inventors: 魏正才; 丁朝亮
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-03-16

Abstract

The invention belongs to the technical field of plastic mechanical filters, and relates to a double-column filter without wire mesh, comprising a filter box fixed on a frame, and two sides of the filter box are respectively provided with feed ports and The discharge port, the feed port and the discharge port are communicated through two sets of upper and lower independent feed flow channels, filter chambers and discharge flow channels. A filter sleeve is coaxially sleeved outside the cylinder, a discharge seat corresponding to the filter cavity is disposed on one side of the filter box, and an annular scraper matched with the outer wall of the filter sleeve is arranged in the discharge seat. When the device drives the filter cartridge to move toward the discharge seat, the scraper scrapes off the impurity material attached to the filter sleeve, and a discharge port for discharging the impurity material is arranged between the discharge seat and the scraper. The double-column meshless filter provided by the invention is convenient to operate, improves the efficiency and prolongs the service life of the product.

Description

Double-column non-silk screen filter

Technical Field

The invention belongs to the technical field of plastic mechanical filters, and relates to a double-column filter without a wire mesh.

Background

In the polymer granulation process, in order to ensure smooth and standard granulation of materials, polymers in a molten state need to be strictly filtered before passing through a template hole, and filter screens required to be filtered are different according to different grades of the materials. Most plastic materials contain impurities, and because polymers are continuous in production, large-particle materials and impurities are blocked on a filter screen and gradually accumulated as a result of continuous filtration, meshes are blocked after the plastic materials are used for a period of time, the flow rate is reduced, the pressure is increased, and the filter screen needs to be replaced when the yield is influenced.

In the prior art, the screen changer is used for screen changing, and the screen changer is a manual or automatic switching device comprising one or more filter screens and is used for filtering foreign particles and impurities when a plasticizing material flow filters the screens. The screen is supported by an alloy perforated plate mounted on a plate or column type carrier which can be moved to switch between a system operating position and an off-line non-operating position. The screen changer may be installed on any new or existing extruder, melt pump, reactor or other extrusion line. The operation of net replacement is complex, and the frequent replacement of consumables brings great economic burden.

To avoid frequent replacement of the filter screen, those skilled in the art have used a screenless filter in place of the filter screen. The non-screen filter adopts a filtering device which does not need to be frequently replaced, and scrapes off residues attached to the filtering device by using a scraper. For example, the chinese patent application CN107791489A discloses an impurity removing device of a non-screen filter, which comprises a filter scraping knife, a filter plate, an impurity removing hole, an impurity removing body, an impurity removing channel, a heater and a blocking device. The current no silk screen filter's weak point lies in, and during operation scraper or cartridge filter need incessantly rotate, cause cartridge filter life not long, and the cartridge filter as the consumptive material is very expensive moreover, in addition, can discharge partly good material when discharge impurity material, cause very big waste.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the double-column non-wire mesh filter, which is simple and convenient to operate, improves the efficiency and prolongs the service life of the product.

In order to solve the above technical problems, the object of the present invention is achieved by the following technical solutions:

double column does not have silk screen filter, including fixing the filter box in the frame, the both sides of filter box are provided with feed inlet and discharge gate respectively, and feed inlet and discharge gate are through two sets of feeding runner, filter chamber and ejection of compact runner intercommunication that independently set up from top to bottom, be provided with power device driven cartridge filter in the filter chamber respectively, the coaxial cover of filter cartridge is equipped with the filter sleeve, one side of filter box is provided with the row material seat corresponding with the filter chamber, arrange and be provided with in the material seat with filter sleeve outer wall complex annular scraper, when power device drive cartridge filter removed to row material seat direction, the impurity material of attached to on the filter sleeve was scraped to the scraper, was provided with the bin outlet of discharging the impurity material between row material seat and the scraper.

In the double-column wire mesh-free filter, the filter box body is internally provided with a filler hole communicated with the filter cavity, and the filler hole is arranged on one side close to the discharging seat. When the power device drives the filter cartridge to move towards the direction of the material discharging seat, the extruded good materials enter the filler holes, and when the power device drives the filter cartridge to reset, the good materials in the filler holes are drawn out along with the filter cartridge.

In the double-column wire-mesh-free filter, the axis of the filler hole is perpendicular to the axis of the filter cylinder, and two ends of the filler hole are respectively communicated with the upper filter chamber and the lower filter chamber.

In the double-column screen-free filter, a plurality of ribs are axially arranged on the inner wall of the filter sleeve at intervals, and the ribs extend inwards along the radial direction of the filter sleeve.

In the double-column screen-free filter, the sleeving part of the filter cartridge, which is opposite to the filter sleeve, is cylindrical, the inner wall surface of the filter sleeve is provided with a corresponding cylindrical surface, and when the filter sleeve is internally provided with the ribs, the inner side surfaces of the ribs form a cylindrical surface corresponding to the sleeving part. The cylindrical surface is a surface similar to a cylinder formed by the inner side surfaces of the ribs and the connecting lines of the inner side surfaces.

In the double-column wire-mesh-free filter, the sleeve part of the filter cartridge, which is opposite to the filter sleeve, is set to be conical, the inner wall surface of the filter sleeve is set to be a corresponding conical surface, and when the filter sleeve is internally provided with the ribs, the inner side surfaces of the ribs form a similar conical surface corresponding to the sleeve part. The similar conical surface means that the inner side surfaces of the ribs and connecting lines thereof form a surface similar to a cone.

In the double-column screen-free filter, the filter box body on one side of the feeding port is connected with the feeding flange, the filter box body on one side of the discharging port is connected with the discharging plate, the outer walls of the two sides of the filter box body are respectively provided with the feeding grooves for connecting the feeding port and the filter cavity and the discharging grooves for connecting the filter cavity and the discharging port, the feeding grooves and the feeding flange form a feeding flow passage, and the discharging grooves and the discharging plate form a discharging flow passage.

In foretell two-column does not have silk screen filter, feed inlet and discharge gate set up between two parties, the inlet flow way sets up the upper and lower both sides at the feed inlet, the oblique symmetry of outlet flow way sets up, and its import all sets up the one side of keeping away from the seat of discharging that corresponds with the filter chamber.

In the double-column wire mesh-free filter, a water cooling jacket for cooling discharged impurity materials is arranged on the outer side of the discharge seat. The cooling temperature of the water cooling jacket is a fixed value or fluctuates only within a small range, for example 80 ℃, and the temperature is selected according to the properties of the material to be cooled.

In the double-column wire-mesh-free filter, the water cooling jacket is connected with a constant-temperature circulating water system, the constant-temperature circulating water system is controlled by an electromagnetic valve, and the power device drives the filter cartridge to open constant-temperature water circulation through the electromagnetic valve when moving outwards, namely the water cooling jacket is used only when discharging impurity materials.

In foretell two post does not have silk screen filter, further, the bin outlet is connected with annular discharge channel, and the foreign matter material is extruded through discharge channel, the water-cooling jacket cover is established outside discharge channel, and under the effect of water-cooling jacket, the foreign matter material of extruding forms plastic tubing.

Compared with the prior art, the invention has the following beneficial effects:

1. the invention adopts the annular scraper to scrape off the impurity materials attached to the filter sleeve, renews the filter sleeve, avoids mesh blockage, reduces the flow and increases the pressure. When the scraper is needed, the power device drives the filter cartridge to move towards the direction of the material discharging seat, and the scraping of the impurity materials can be completed without continuous rotation of the scraper or the filter cartridge. Therefore, the non-rotary type non-wire mesh filter is revolutionarily provided, the operation is simple and convenient, the efficiency is improved, and the service life of the product is prolonged. Meanwhile, the invention adopts a double-column structure, and can complete the scraping work of the impurity materials without stopping the machine.

2. The invention adopts the filter sleeve with a unique structure, and the ribs are arranged on the inner wall of the filter sleeve, thereby greatly enhancing the structural strength of the filter sleeve and prolonging the service life of the product. Meanwhile, different filter sleeves are provided according to different use requirements, the cylindrical structure is adopted, the processing is convenient, and the finished product is reduced; the conical structure is adopted, so that the installation is convenient, and the working efficiency is improved.

3. According to the invention, the structure of the filler hole is designed innovatively, when the power device drives the filter cylinder to move towards the direction of the material discharge seat, the extruded good material enters the filler hole, when the power device drives the filter cylinder to reset, the good material in the filler hole is extracted along with the filter cylinder, so that pressure fluctuation caused by extrusion during scraping is avoided, meanwhile, the good material is stored in the filler hole during extrusion, and waste of the good material due to simultaneous discharge of the good material and impurity material during movement of the filter cylinder is avoided.

4. The structure of the feeding and discharging flow passage is improved, the feeding flow passage is defined by the feeding groove and the feeding flange, and the discharging flow passage is defined by the discharging groove and the discharging plate. Compared with the eccentric hole flow passage in the prior art, the filter box body does not need to be drilled during processing, so that the processing difficulty and the product cost are greatly reduced, and the material flows more smoothly; in addition, because the distance of the flow channel is greatly prolonged, the filtering stroke is increased, and a better filtering effect is further brought.

5. The invention designs the water cooling jacket, ensures that the impurity materials are just cooled into solid in the discharging process, ensures that the discharged impurity materials are environment-friendly and have no smoke smell, and is enriched together under the condition of not influencing the discharging effect, thereby being convenient for regular cleaning.

6. The discharge port of the invention is connected with the annular discharge channel, the impurity material is extruded out through the discharge channel, and the extruded impurity material is cooled and extruded to form a plastic pipe under the action of the water cooling jacket, which can be used as a drain pipe and the like, thereby achieving the purpose of waste utilization.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a front view of the present invention with the feed flange removed;

FIG. 3 is a rear view of the present invention with the discharge plate removed;

FIG. 4 is a cross-sectional view of the present invention;

FIG. 5 is an enlarged view at A of FIG. 4;

FIG. 6 is a perspective view of a first filter sleeve of the present invention;

FIG. 7 is a perspective view of a second filter sleeve of the present invention;

reference numerals: 1. a frame; 2. a filter box body; 3. a feed inlet; 4. a discharge port; 5. a filter cartridge; 6. a filter sleeve; 7. a discharging seat; 8. a scraper; 9. a discharge outlet; 10. a filler hole; 11. ribs; 12. a feed flange; 13. a discharge plate; 14. a feeding groove; 15. a discharging groove; 16. a water cooling jacket.

Detailed Description

The invention will be further described in the following with reference to specific embodiments thereof, with reference to the accompanying drawings, in which figures 1 to 7:

a double-column screen-free filter comprises a filter box body 2 fixed on a frame 1, wherein a feed inlet 3 and a discharge outlet 4 are respectively arranged at two sides of the filter box body 2, the feed inlet 3 and the discharge outlet 4 are communicated through two groups of feed flow passages, filter chambers and discharge flow passages which are independently arranged from top to bottom, filter cartridges 5 driven by a power device are respectively arranged in the filter chambers, the power device can use a motor or a hydraulic device, preferably an oil cylinder, a filter sleeve 6 is coaxially sleeved outside the filter cartridges 5, through holes and filter holes (not shown in the drawing) for passing materials are respectively arranged on the filter cartridges 5 and the filter sleeve 6, a discharge seat 7 corresponding to the filter chambers is arranged at one side of the filter box body 2, an annular scraper 8 matched with the outer wall of the filter sleeve 6 is arranged in the discharge seat 7, and when the power device drives the filter cartridges 5, the scraper 8 scrapes off the impurities attached to the filter cylinder 5, and a discharge port 9 for discharging the impurities is arranged between the discharge seat 7 and the scraper 8.

The working mode of the invention is as follows: plastics production facility during operation, the filter filters the material that passes through, and continuous filtration makes impurity enrichment on filter sleeve 6, and when needs were handled, when power device drive cartridge filter 5 removed to row material seat 7 direction, the impurity material of attaching to on filter sleeve 6 was scraped to scraper 8, and the impurity material of scraping is discharged by bin outlet 9, and later power device drive cartridge filter 5 removes and resets to the direction of keeping away from row material seat 7. Because the invention adopts the double-column structure, when one filter cylinder is used for processing, the other filter cylinder normally works, so that the impurity removal operation can be carried out without stopping the machine. The cleaning operation can be started manually or periodically by a control program such as a PLC control program.

Referring to fig. 4 and 5, a filling hole 10 communicated with the filter cavity is arranged in the filter box body 2, and the filling hole 10 is arranged at one side close to the discharge seat 7. When the power device drives the filter cartridge 5 to move towards the direction of the discharge seat 7, extruded materials enter the filler holes 10, and when the power device drives the filter cartridge 5 to reset, the extruded materials in the filler holes 10 are drawn out along with the filler holes. The filler hole 10 can avoid both pressure fluctuation when the filter cartridge 5 moves and waste caused by discharging good materials together with impurity materials.

Preferably, the axis of the filler hole 10 is perpendicular to the axis of the filter cartridge 5, two ends of the filler hole 10 are respectively communicated with the upper and lower filter chambers, and the upper and lower filter cartridges 5 can share the same filler hole 10 during impurity removal.

Referring to fig. 6, in order to increase the structural strength and the service life of the filter sleeve 6, a plurality of ribs 11 are axially spaced on the inner wall of the filter sleeve 6, and the ribs 11 extend inward along the radial direction of the filter sleeve 6.

The filter cartridge 5 and the filter sleeve 6 may be formed in different shapes to meet different requirements. Firstly, the sleeving part of the filter cartridge 5 opposite to the filter sleeve 6 is cylindrical, and the inner side surface of the rib 11 forms a similar cylindrical surface corresponding to the sleeving part, so that the shape is beneficial to processing the filter sleeve 6. Secondly, the sleeve part of the filter cartridge 5 opposite to the filter sleeve 6 is conical, and the inner side surface of the rib 11 forms a similar conical surface corresponding to the sleeve part, so that the shape is favorable for the installation of the filter sleeve 6.

Referring to fig. 7, the filtering sleeve 6 may not be provided with ribs, and may have different shapes according to different requirements: firstly, the sleeving part of the filter cartridge 5, which is opposite to the filter sleeve 6, is set to be cylindrical, and the inner wall surface of the filter sleeve 6 is set to be a corresponding cylindrical surface, so that the shape is beneficial to processing the filter sleeve 6; secondly, the sleeve part of the filter cartridge 5 opposite to the filter sleeve 6 is set to be conical, and the inner wall surface of the filter sleeve 6 is set to be a corresponding conical surface, so that the shape is beneficial to the installation of the filter sleeve 6.

Compared with the attached

drawings

2 and 3, the invention also improves the structure of the feeding and discharging flow channel: be connected with feeding flange 12 on the filter box 2 of feed inlet 3 one side, be connected with out flitch 13 on the filter box 2 of discharge gate 4 one side, be provided with the feeding recess 14 of connecting feed inlet 3 and filter chamber, the ejection of compact recess 15 of connecting filter chamber and discharge gate 4 on the outer wall of filter box 2 both sides respectively, feeding recess 14 encloses into the feeding runner with feeding flange 12, ejection of compact recess 15 encloses into ejection of compact runner with play flitch 13. The structure of recess has avoided carrying out the processing in hole at filter box 2 to reduce the processing degree of difficulty, still improved the smooth and easy nature of ejection of compact simultaneously.

Preferably, feed inlet 3 and discharge gate 4 set up between two parties, the feeding runner sets up the upper and lower both sides at feed inlet 3, ejection of compact runner slope symmetry sets up, and ejection of compact runner's import all sets up in the one side of keeping away from row material seat 7 that corresponds with the filter chamber, and then the length and the filterable stroke of extension runner reach better filter effect. The outlet of the filter cartridge 5 and the inlet of the discharging flow passage are both rectangular.

In order to better discharge the impurity materials, the invention also designs a cooling structure: and a water cooling jacket 16 for cooling discharged impurity materials is arranged on the outer side of the discharging seat 7. The cooling temperature of the water cooling jacket 16 is a fixed value or fluctuates only in a small range, for example, 80 ℃, the temperature is selected according to the property of the material to be cooled, the impurity material is guaranteed to be just cooled into a solid state in the discharging process, the discharged impurity material is environment-friendly and free of smoke smell, meanwhile, the impurity material is enriched together under the condition that the discharging effect is not influenced, and regular cleaning is convenient.

Further, in order to make the cooling structure work better, the water cooling jacket 16 is connected with a constant temperature circulating water system, the constant temperature circulating water system is controlled by an electromagnetic valve, and when the power device drives the filter cartridge 5 to move outwards, the constant temperature water circulation is opened through the electromagnetic valve, namely, the water cooling jacket 16 is used only when the impurity materials are discharged.

Further, the discharge port 9 is connected with an annular discharge channel, impurity materials are extruded out of the discharge channel, the water cooling sleeve 16 is sleeved outside the discharge channel, and the extruded impurity materials form a plastic pipe under the action of the water cooling sleeve 16.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. A double-column non-wire mesh filter includes a filter box (2) fixed on the frame (1), and the two sides of the filter box (2) are respectively provided with feed ports (3) and The discharge port (4), the feed port (3) and the discharge port (4) are communicated through two sets of upper and lower independent feed flow channels, filter chambers and discharge flow channels, and the filter chambers are respectively provided with power The filter cartridge (5) driven by the device is characterized in that a filter sleeve (6) is provided on the outer coaxial sleeve of the filter cartridge (5), and a filter sleeve (6) is provided on one side of the filter box (2), which is opposite to the filter cavity. The corresponding discharge seat (7) is provided with an annular scraper (8) that cooperates with the outer wall of the filter sleeve (6), and is arranged between the discharge seat (7) and the scraper (8). There is a discharge port (9) for discharging impurity materials.

2 . The double-column wire-free filter according to claim 1 , wherein the filter box ( 2 ) is provided with packing holes ( 10 ) communicating with the filter cavity, and the packing holes ( 10 ) are provided in the filter box ( 2 ). 3 . ) on the side close to the discharge seat (7).

3. The double-column wire-free filter according to claim 2, wherein the axis of the packing hole (10) is perpendicular to the axis of the filter cylinder (5), and the two ends of the packing hole (10) are respectively Connect with the upper and lower filter chambers.

4 . The double-column wire-free filter according to claim 1 , wherein a plurality of ribs ( 11 ) are axially spaced on the inner wall of the filter sleeve ( 6 ), and the ribs ( 11 ) It extends radially inwardly of the filter sleeve (6).

5. The double-column wire-free filter according to claim 1, characterized in that, the sleeve part opposite to the filter sleeve (5) and the filter sleeve (6) is set to a cylindrical shape, and the filter sleeve (6) ) of the inner wall surface is set as a corresponding cylindrical surface; or, the sleeve portion of the filter cartridge (5) opposite to the filter sleeve (6) is set to a conical shape, and the inner wall surface of the filter sleeve (6) is set to the corresponding cone.

6 . The double-column wire-free filter according to claim 4 , wherein the sleeve part opposite to the filter sleeve ( 5 ) and the filter sleeve ( 6 ) is configured as a cylindrical shape, and the ribs ( 11 ). ) forms a cylindrical surface corresponding to the sleeve part; or, the sleeve part of the filter cartridge (5) opposite to the filter sleeve (6) is set to be tapered, and the inner surface of the rib (11) The side surface forms a cone-like surface corresponding to the sleeve portion.

7. The double-column wire-free filter according to claim 1, wherein a feed flange (12) is connected to the filter box (2) on one side of the feed port (3), The filter box (2) on one side of the discharge port (4) is connected with a discharge plate (13), and the outer walls of the two sides of the filter box (2) are respectively provided with a connecting feed port (3) and the feed groove (14) of the filter cavity, the discharge groove (15) connecting the filter cavity and the discharge port (4), the feed groove and the feed flange (12) enclose the feed flow The discharge groove (15) and the discharge plate (13) form a discharge flow channel.

8 . The double-column wire mesh filter according to claim 1 , wherein the feed port ( 3 ) and the discharge port ( 4 ) are centrally arranged, and the feed flow channel is arranged at the feed port. 9 . On the upper and lower sides of (3), the discharge flow channels are arranged in an oblique and symmetrical manner, and the inlets thereof are all arranged on the side corresponding to the filter cavity away from the discharge seat (7).

9 . The double-column wire-free filter according to claim 1 , wherein a water cooling jacket ( 16 ) for cooling the discharged impurity material is arranged on the outer side of the discharge seat ( 7 ). 10 .

10. The double-column wire-free filter according to claim 1, characterized in that, the water cooling jacket (16) is connected to a constant temperature circulating water system, and the constant temperature circulating water system is controlled by a solenoid valve, and a power device drives the filter When the cylinder (5) moves outward, the constant temperature water circulation is opened through the solenoid valve.