[go: up one dir, main page]

US20090020461A1 - Screen Basket with Replaceable Profiled Bars - Google Patents

Screen Basket with Replaceable Profiled Bars Download PDF

Info

Publication number
US20090020461A1
US20090020461A1 US11/920,139 US92013906A US2009020461A1 US 20090020461 A1 US20090020461 A1 US 20090020461A1 US 92013906 A US92013906 A US 92013906A US 2009020461 A1 US2009020461 A1 US 2009020461A1
Authority
US
United States
Prior art keywords
profiled bars
screen basket
recited
support ring
canceled
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US11/920,139
Other languages
English (en)
Inventor
Marc-Andre Hetu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Filtration Fibrewall Inc
Original Assignee
Filtration Fibrewall Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Filtration Fibrewall Inc filed Critical Filtration Fibrewall Inc
Priority to US11/920,139 priority Critical patent/US20090020461A1/en
Assigned to FILTRATION FIBREWALL INC. reassignment FILTRATION FIBREWALL INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HETU, MARC-ANDRE
Publication of US20090020461A1 publication Critical patent/US20090020461A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
    • D21D5/02—Straining or screening the pulp
    • D21D5/16—Cylinders and plates for screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/111—Making filtering elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/117—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements arranged for outward flow filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/44—Edge filtering elements, i.e. using contiguous impervious surfaces
    • B01D29/445—Bar screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/06—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
    • B01D33/067—Construction of the filtering drums, e.g. mounting or sealing arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/06—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
    • B01D33/11—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums arranged for outward flow filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/18—Drum screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
    • B07B1/4618—Manufacturing of screening surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
    • B07B1/4627—Repairing of screening surfaces
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49908—Joining by deforming
    • Y10T29/49936—Surface interlocking

Definitions

  • the present invention relates to screen baskets used for screening fiber suspensions, and more particularly to a screen basket which can be applied in the pulp and paper industry, for example in pressure screen applications.
  • the innovations of the present invention can also be advantageously applied for basket manufacturing used for screw presses or other filtration or dewatering devices.
  • Pulp screening in the pulp and paper industry is generally achieved with pressure screens in which the furnish is pumped to remove oversized contaminants, fiber bundles, wood fragments, and/or sort long and short fibers, and/or stiff and soft fibers.
  • pressure screen configurations are in use today. The two main configurations are pressure screens using substantially cylindrical outward flow basket, and screens using substantially cylindrical inward flow basket. All the pressure screens generally require the accepted stock to pass through the holes or slots of a screen basket. Rejects too large to pass through the screen basket or wedge-wire basket openings leave through a rejects outlet.
  • a rotor is used to prevent the slots or holes from plugging. The rotor creates pressure pulsations resulting in sufficient cleaning action of the screening surface to avoid plugging condition.
  • screen baskets are subjected to high dynamic loading from the pressure pulsations generated by the rotor.
  • ring fatigue failure of wedge wire basket is commonly observed and the mills are often forced to get back to milled slot or drilled baskets, resulting in a loss of capacity and/or efficiency for obtaining acceptable screen basket life.
  • Wedge wire baskets are most commonly welded assemblies. Baskets from these constructions suffer to various degrees from distortion, residual stress, stress concentration from welded joint geometry and weld defects, which can normally be associated with most welding processes.
  • the wedge wire baskets are the ones offering the highest open area because of their continuous slots extending over the entire basket length.
  • the accuracy of the cold drawing process used in wire manufacturing can be advantageously used to achieve exceptionally accurate slot width and highly repeatable contour geometry, which contribute in providing better efficiency and capacity than milled slot or drilled baskets.
  • Conventional wedge wire screen baskets generally comprise a plurality of wedge wires (profiled bars) that are permanently joined to support rings by various methods. It should be understood by the term “permanently joined” that a destructive method, such as cutting, grinding, chemical attack, etc., would be required to remove the profiled bars. Support rings are necessary to withstand the loading to which the basket is subjected during screening. For severe applications, the screen basket are often reinforced using additional welded or shrink fit rings or backing jacket.
  • U.S. Pat. No. 6,051,103 issued to Aikawa on Apr. 18, 2000 and titled “Paper-Making Screen Apparatus” concerns an inward-flow screen basket provided with both replaceable bars and continuous slots.
  • a drawback of Aikawa's basket is that a minimum clearance has to be provided between the rod-shaped members and the engaging sections of the support members to allow insertion of the rod-shaped members therein. This clearance may cause the movements of the rod-shaped members in the engaging sections during operations and even vibrations, which in turn can cause fatigue and premature wear of the parts.
  • An object of the present invention is therefore to provide an improved screen basket.
  • Another object of the invention is to provide a demountable screen basket having replaceable profiled bars which can be locked in place.
  • a screen basket comprising:
  • each of the profiled bars having a radial profiled portion and a radial locking portion joined at an intermediate cross-section; the radial locking portion having an irregular cross-section including at least one radial cross-section wider than the intermediate cross-section;
  • each of the plurality of support ring assemblies including a stack of first and second annular support rings; at least one of the first and second support rings including a plurality of grooves; each groove being configured and sized for complementary receiving the radial locking portion of a respective one of the profiled bars; the first and second support rings being mounted to each other and to the plurality of profiled bars so as to yield a locking force towards the radial locking portion of the profiled bars, thereby locking the profiled bars thereonto.
  • a method for assembling a screen basket comprising:
  • first and second support rings including first and second support rings; at least one of the first and second support rings including a plurality of grooves;
  • the magnitude of the locking force is such that it is several times that generated by pressure differential and pressure pulsations from the rotor of the apparatus into which the screen basket is used, which prevents movement of the profiled bar during normal operation.
  • One of the benefits of the present invention is that it provides a basket assembly for which the profiled bars and other parts thereof can be replaced.
  • a screen basket according to the present invention is not limited to the paper or pulp industry. It can also be used in other industries using profiled bars to generate a plurality of screening, draining, filtering, classifying or sorting slots such as but not limited to mining, petrochemical, food and beverage, and water treatment industries, in various forms and configurations of screening surface (cylinders, curved sectors, flat sections, etc.). It can further be used in the manufacturing of special drainage rolls.
  • FIG. 1 is a perspective view of a demountable screen basket according to a first illustrated embodiment of the present invention
  • FIG. 2 is a perspective partly sectional view of FIG. 1 ;
  • FIG. 3 is a partial close-up view illustrating the assembly of support ring assemblies and profiled bars from FIG. 1 ;
  • FIGS. 4A-4B are isolated radial cross-sections of the assembly of one support ring assembly and profiled bars from FIG. 1 ; FIG. 4A illustrating the compressible ring before being compressed and FIG. 4B illustrating the compressible ring compressed;
  • FIGS. 4C-4D are cross-sections taken respectively along line 4 C- 4 C on FIG. 4A and along line 4 D- 4 D on FIG. 4B ;
  • FIGS. 5A and 5B are isolated radial cross-sections of the assembly of a profiled bar and a support ring assembly according to a second illustrative embodiment of the present invention; FIG. 5A illustrating the compressible insert before being compressed and FIG. 5B illustrating the compressible insert compressed;
  • FIGS. 6A and 6B are isolated radial cross-sections of the assembly of a profiled bar and a support ring assembly according to a third illustrative embodiment of the present invention; FIG. 6A illustrating the compressible insert before being compressed and FIG. 6B illustrating the compressible insert compressed;
  • FIG. 7 is a perspective partly sectional view of a demountable screen basket according to a fourth illustrated embodiment of the present invention.
  • FIG. 8 is a perspective partly sectional view of a screen basket according to a fifth illustrated embodiment of the present invention.
  • FIGS. 9A and 9B are isolated radial cross-sections of the assembly of a profiled bar and a support ring assembly of the screen basket from FIG. 8 ; FIG. 9A illustrating the compressible inserts before being compressed and FIG. 9B illustrating the compressible inserts compressed;
  • FIGS. 10A and 10B are isolated radial cross-sections of the assembly of a profiled bar and a support ring assembly of a screen basket according to a sixth illustrated embodiment of the present invention; FIG. 10A illustrating the open ring opened and FIG. 10B illustrating the open ring closed;
  • FIGS. 10C and 10D are isolated top-plan cross-sections of the assembly the support ring assembly from FIGS. 10A-10B with profiled bars; FIG. 10C illustrating the open ring opened and FIG. 10D illustrating the open ring closed;
  • FIGS. 11 to 13 are top-plan cross-sections illustrating back contours for the locking portions and for the corresponding complementary grooves of the support ring assemblies of screen baskets according to seven, eight and ninth illustrative embodiments of the present invention
  • FIGS. 14A-14B are partial top plan cross-sections of a clamping mechanism for a screen basket according to a tenth illustrated embodiment of the present invention.
  • FIG. 14A illustrating the clamping mechanism in a mounting position
  • FIG. 14B illustrating the clamping mechanism in a pressed position
  • FIGS. 15A-15B are partial side cross-sections of the clamping mechanism from FIGS. 14A-14B ; FIG. 15A illustrating the clamping mechanism in a mounting position; FIG. 15B illustrating the clamping mechanism in a pressed position.
  • FIGS. 1-3 of the appended drawings a demountable screen basket 10 according to a first illustrated embodiment of the present invention will be described.
  • the demountable screen basket 10 comprises a plurality of profiled bars 12 aligned along a longitudinal axis 14 and positioned so as to define a slotted cylindrical wall 15 having an inner side 16 , defining a screening surface, and an outer side 18 both extending between two longitudinal ends 20 , a plurality of support ring assemblies 22 and 22 ′ mounted to the plurality of profiled bars 12 transversally therefrom for assembling the plurality of profiled bars 12 into the slotted cylindrical walls 15 , a pair of annular end flanges 24 , each for receiving a respective end 20 of the plurality of profiled bars 12 , and a plurality of clamping posts 26 secured to both annular flanges 24 for compressing the support ring assemblies 22 .
  • each profiled bar 12 has a profiled portion 28 and a tapered locking portion 30 joined at an intermediate cross-section 32 .
  • the tapered locking portion 30 has two angled faces 31 extending from an outer face 33 , thereby defining a dovetail.
  • Each support ring assembly 22 includes a stack of first and second identical support rings 34 provided with equi-distanced grooves 36 configured for complementary receiving the tapered locking portion 30 of a profiled bar 12 . Since the locking portions 30 are tapered, the profiled bars 12 are prevented from being released radially. Each profiled bar 12 is however slidable along the support ring assemblies 22 and therefore removably mounted thereto.
  • the grooves 36 are located on the inner side diameter of the rings 34 for outward flow screen basket configuration, such as screen basket 10 .
  • the grooves 36 are located on the outer side diameter of the rings 34 , and the clamping posts 26 are positioned on the inner side of the basket.
  • the rings 34 are manufactured before assembly and already include the assembly grooves 36 .
  • the locking portions 30 and grooves 36 are dimensioned as to yield a clearance. However, this clearance may result in slight movements between the profiled bars 12 and the support ring assemblies 22 and 22 ′ when the screen basket 10 is under stress.
  • the screen basket 10 includes means to bias the locking portions 30 of the profiled bars 12 towards respective contours of the grooves 36 so as to lock the profiled bars 12 therein for applications wherein relative movements of the profiled bars 12 and support ring assemblies 22 can be detrimental.
  • the screen basket 10 as well as any screen basket from the present invention, can be used in a screening apparatus either held fixed or put in constant or intermittent rotation along axis 14 , or put under constant or intermittent vibration or displacement.
  • each support ring assembly 22 includes a compressible insert, in the form of an elastomer ring 38 mounted between the two rings 34 , adjacent to the locking portions 30 of the profiled bars 28 .
  • the elastomer ring 38 which has a circular cross-section, is initially positioned between the two support rings 34 and around the circumference defined by the profiled bars 12 , after the mounting of the profiled bars 12 into the ring grooves 36 . Then, the two rings 34 are pressed together axially, forcing the insert 38 towards the profiled bars 12 as illustrated in FIGS. 4B and 4D . This forces the locking portions 30 of the profiled bars 12 towards the grooves 36 , eliminating the above-mentioned clearance, thereby locking the profiled bars 12 into the grooves 36 as discussed hereinabove.
  • elastomer ring 38 is illustrated as having a circular cross section, an elastomer ring having other another regular or irregular cross-section, including for example a rectangular cross-section, can also be provided.
  • each pair of rings 34 are clamped together at preferably equally spaced circumferential locations by the clamping posts 26 .
  • the clamping posts 26 are in the form of combs 26 provided with longitudinal notches 40 for receiving the pair of rings 34 . More specifically, the notches 40 are tapered to thereby axially compressing the pair of rings 34 when they are inserted therein as shown in FIG. 2 .
  • clamping combs 26 are illustrated as V or U-shaped elongated members, they can also be tubular for example.
  • the clamping combs 26 can further be in the form of elongated beam-like members provided with V-shaped brackets (not shown) mounted thereon for receiving the support ring assemblies 22 .
  • the notches 40 are distributed to locate the support ring assemblies 22 at desired locations along the basket length with uniform or variable spacing, to have for example tighter ring pair spacing in a more critical region of the basket 10 .
  • the clamping combs 26 are secured to the end flanges 24 via mounting rods 42 .
  • the annular end flanges 24 and the rings 34 are provided with respective co-axial holes 44 and 46 for receiving the rods 42 .
  • the rods 42 are provided with longitudinal threaded ends for securing directly into holes in one of the two flanges 22 and for receiving a nut 48 through respective counterbores at the other end.
  • Other means can also be used to removably secure the rods 42 to the flanges 24 .
  • clamping combs 26 can alternatively be positioned so as to show an angle with both the support ring assemblies 22 and 22 ′ and the profiled bars 12 and are thus not limited to the position aligned with the profiled bars 12 illustrated for example in FIGS. 1-2 .
  • each of the end support ring assemblies 22 ′ which are mounted at each of the longitudinal end of the clamping combs 34 so as to abut the flanges 24 , include a first grooved ring 34 contacting the combs 26 and a non-grooved ring 50 , having a larger inside diameter than the first grooved ring 34 , contacting a respective flange 24 .
  • a compressible insert 38 is provided between the non-grooved ring 50 and the circumference created by the locking portions 30 of the profiled bars 12 for biasing the bars 12 into the grooves of the rings 34 of the assembly 22 ′, the face of the flange 24 contacting the inside ring 50 acting as a second support ring for compressing onto the insert 38 .
  • the thickness of the non-grooved ring 50 is selected so that it is smaller than the uncompressed insert 38 .
  • Each of the two end flanges 24 includes a recess 54 on its peripheral inner side for respectively receiving the first and second longitudinal ends 20 of the profiled bars.
  • An illustrated method of assembling the basket 10 includes:
  • the basket 10 is completely demountable. Therefore, when worn or broken components of the basket 10 need to be replaced, the basket 10 can be disassembled so as to remove these components and reuse the other, still usable, components.
  • any elastomeric material having a Young's modulus lower than about 20 GPa is suitable to be used as the insert.
  • a screen basket according to the present invention can be provided with unequally spaced clamping combs 26 .
  • the number of profiled bars 12 , support ring assemblies 22 and/or 22 ′, and clamping combs 26 may vary.
  • the screen basket 10 has been described as a screen suitable for outward flow, it is believed to be within the reach of a person skilled in the art to adapt the present teaching for an inward flow application.
  • the support ring assemblies 22 and 22 ′ and the clamping combs 26 are positioned on the inner side of the cylinder formed by the profiled bars 12 , with the profiled portions thereof located on the outside of the cylinder.
  • FIGS. 5A-5B illustrates a support ring assembly 56 according to a second illustrated embodiment of the present invention. Since the support ring assembly 56 is similar to the support ring assembly 22 , and for concision purposes, only the differences between the two assemblies 56 and 22 will be described herein in more detail.
  • the compressible insert 58 is in the form of a wide ring having a rectangular cross-section and a width similar to the width of the rings 34 . Again, the insert 58 is forced against the profiled bars 12 when the two metallic rings 34 are pressed together.
  • FIGS. 6A-6B illustrates a support ring assembly 60 according to a third illustrated embodiment of the present invention. Since the support ring assembly 60 is similar to the support ring assembly 22 , and for concision purposes, only the differences between these two assemblies 60 and 22 will be described herein in more detail.
  • the support ring assembly 60 includes a compressible insert 62 in the form of a narrow ring having a width preferably smaller than the width of the metallic rings 34 and characterized by a thickness at rest.
  • the assembly 60 further includes an intermediate ring 64 positioned between the support rings 34 and having a thickness smaller than the insert 62 thickness at rest. The insert 62 is forced against the profiled bars 12 when the stack of metallic rings 34 and 64 is axially compressed.
  • FIG. 7 of the appended drawings a demountable screen basket 66 according to a fourth illustrative embodiment of the present invention will be described. Since the screen basket 66 is very similar to the screen basket 10 , and for concision purposes, only the differences between the two screen baskets 10 and 66 will be described herein in more detail.
  • the screen basket 66 further includes fasteners 68 for pressing the two rings 34 together axially and then forcing the insert 38 towards the profiled bars 12 as illustrated in FIGS. 4B and 4D .
  • the fasteners 68 can take any form including rivets, bolts, clips, etc.
  • fasteners 68 allows limiting the number of clamping combs 26 and rods 42 .
  • a screen basket 70 according to a fifth illustrative embodiment of the present invention will now be described with reference to FIGS. 8 and 9 A- 9 B. Since the screen basket 70 is very similar to the screen basket 10 , and for concision purposes, only the differences between the baskets 10 and 70 will be described in more detail. As will now become more apparent, the main difference between the two baskets 10 and 70 is the support ring assemblies 72 of the screen basket 70 which differ from the support ring assemblies 22 .
  • Each support ring assembly 72 includes first and second integral rings 74 which, similarly to the rings 34 of the basket 10 , extend along all the periphery of the basket 10 , and an intermediary grooved disk 76 , which is made of a plurality of angular segments 78 , mounted between the first and second rings 74 .
  • the grooved disk 76 includes grooves 36 for complementary receiving the locking portions 30 of the profiled bars 12 as discussed hereinbelow in more detail.
  • the support ring assembly 72 further comprises two compressible inserts in the form of rings 38 positioned between a respective support ring 74 and grooved disk 76 adjacent to the profiled bars 12 .
  • the inner side of each support ring 74 is provided with a chamfer 80 for biasing the inserts 38 towards profiled bars 12 when the support ring assembly 72 is compressed as illustrated in FIG. 9B .
  • the support ring assembly 72 allows forcing the locking portion of the bars 12 towards the grooves 36 , providing the locking effect discussed in further detail hereinabove.
  • the support rings 74 and intermediary ring 76 are provided with holes 82 , similar to holes 46 of the basket 10 , for securing the rods 42 .
  • the holes 46 are positioned so that each segment 78 includes at least one hole and therefore receives at least one rod 42 .
  • the joints 84 between two segments 78 are preferably offset for two adjacent support ring assemblies 72 .
  • a grooved disk 76 made of segments 78 allows minimizing the lost of material. For example, when only a portion of the disk 76 is damaged, only the corresponding segments can be changed.
  • the number of sections 78 forming the grooved disk 76 may of course vary. Typically, 6 angular segments 78 are used.
  • FIGS. 10A-10D a support ring assembly 86 for a screen basket according to a sixth illustrative embodiment of the present will now be described. Since the support ring assembly 86 is very similar to the support ring assembly 72 , only the differences between these two assemblies, relating mainly to the support ring assembly, will be further described herein.
  • the support ring assembly 72 includes open rings 88 , having a triangular cross-section for respective complementary insertion in the chamfers 80 .
  • the rings 88 are sized so as to yield a gap 92 between its two extremities 90 when no pressure is exerted onto the two exterior support rings 74 .
  • its diameter shrinks, as allowed by the gap 92 , bringing the two extremities 90 towards each other (see arrows 96 ) and immobilizing the locking portion of the bars 12 into the grooves 36 .
  • the open rings 88 can be made for example of metal.
  • rings 88 can be replaced by any other suitable elements or materials which expand in a confined space.
  • FIGS. 11 to 13 illustrate examples of back contours for the locking portions and for the corresponding complementary grooves of the support ring assemblies of screen baskets according to seven, eight and ninth illustrative embodiments of the present invention.
  • the grooves contours are complementary to the locking portion contours and therefore identical in shape, only the locking portion contours will be described herein in more detail.
  • FIG. 11 shows a first alternate configuration of locking portions 98 characterized by having an outer or abutting face 100 , a first face 102 extending generally perpendicularly from the outer face 100 , and a second face 104 opposite the first face 102 , extending at an angled therefrom.
  • FIG. 12 illustrates locking portions 106 having multiple teeth 108 on both sides.
  • FIG. 13 illustrates locking portions 110 with multiple teeth 112 on a single side, the other opposite side 114 being generally planar.
  • FIGS. 14A-14B and 15 A- 15 B illustrate a clamping mechanism 116 according to a tenth illustrated embodiment of a screen basket of the present invention. Since the screen basket according to this tenth illustrated embodiment is very similar to the screen basket according to the second illustrated embodiment (see FIGS. 5A-5B ), and for concision purposes, only the differences between these two embodiments will be described herein in more detail.
  • the clamping bar 116 includes sequentially alternating integral narrow portions 118 and wide portions 120 .
  • the narrow portions 118 have a height slightly less than the overall thickness of the two support rings 34 with the insert 58 when the support ring assembly 56 formed thereby is not compressed (see FIG. 15A ) and generally corresponding to the overall thickness of the support ring assembly 56 when it is compressed (see FIG. 15B ).
  • Each wide portion 120 has a height generally corresponding to the inter-space between two adjacent support ring assemblies 56 .
  • Elongated holes 122 are provided in both the support rings 34 and inserts 58 at generally equally distanced circumferential position to receive the plurality of clamping posts 116 .
  • the elongated holes 122 are configured and sized to receive the posts 116 when the posts are oriented along the elongated side of the holes 122 .
  • the clamping posts 116 are then rotated 90 degrees from mounting position to obtain a pressed position (see arrows 124 on FIG. 14B ). This rotation forces the wide portions 120 to engage over the support ring assemblies 56 , thereby exerting a force onto the support ring assemblies 56 (see arrows 126 ). While in this pressed position, the support ring assemblies 56 are therefore compressed, yielding the locking effect described hereinabove in more detail.
  • the clamping post 116 can then be removably secured to the end flanges (not illustrated).
  • the present invention is not limited to a screen basket having support disk assemblies provided with two (2) or three (3) support rings.
  • four, or more rings pressed together with deformable inserts placed between some of those rings to obtain stronger joints can be provided. It is also possible for example to use a single support ring located at a certain distance in between two ring pairs. One or more rings could also be added to a ring pair without adding supplementary compressible insert.
  • a screen basket according to the present invention can be provided with profiled bars, support ring assemblies or support conforming to any shape or contour and clamping posts so configured and sized as to yield a screening surface which is flat, curved, stepped, conical, etc.
  • a screen basket having different combinations of aspects of the above illustrated embodiments can also be provided according to the present invention.
  • screen baskets according to the illustrated embodiments are all completely demountable, it is believed to be within the reach of a person skilled in the art to modify one of the illustrated screen baskets and/or use the above teaching to provide a screen basket which is only partly demountable so as to recycle only parts of its components for example.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Paper (AREA)
US11/920,139 2005-05-09 2006-05-05 Screen Basket with Replaceable Profiled Bars Abandoned US20090020461A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US11/920,139 US20090020461A1 (en) 2005-05-09 2006-05-05 Screen Basket with Replaceable Profiled Bars

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US67881905P 2005-05-09 2005-05-09
PCT/CA2006/000722 WO2006119614A1 (fr) 2005-05-09 2006-05-05 Panier de tamis à barres profilées remplaçables
US11/920,139 US20090020461A1 (en) 2005-05-09 2006-05-05 Screen Basket with Replaceable Profiled Bars

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA2006/000722 A-371-Of-International WO2006119614A1 (fr) 2005-05-09 2006-05-05 Panier de tamis à barres profilées remplaçables

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US12/807,787 Continuation US8469198B2 (en) 2005-05-09 2010-09-14 Screen basket with replaceable profiled bars

Publications (1)

Publication Number Publication Date
US20090020461A1 true US20090020461A1 (en) 2009-01-22

Family

ID=37396134

Family Applications (2)

Application Number Title Priority Date Filing Date
US11/920,139 Abandoned US20090020461A1 (en) 2005-05-09 2006-05-05 Screen Basket with Replaceable Profiled Bars
US12/807,787 Active 2026-09-09 US8469198B2 (en) 2005-05-09 2010-09-14 Screen basket with replaceable profiled bars

Family Applications After (1)

Application Number Title Priority Date Filing Date
US12/807,787 Active 2026-09-09 US8469198B2 (en) 2005-05-09 2010-09-14 Screen basket with replaceable profiled bars

Country Status (5)

Country Link
US (2) US20090020461A1 (fr)
EP (1) EP1880054B1 (fr)
CN (1) CN101171390B (fr)
CA (1) CA2609881C (fr)
WO (1) WO2006119614A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100263819A1 (en) * 2007-11-14 2010-10-21 Guy Maurais Screen basket
US20110100901A1 (en) * 2008-05-21 2011-05-05 Comer S.P.A. Improved filtering drum for fibre suspensions in water
KR20160055829A (ko) * 2013-08-29 2016-05-18 보밀 아베 드럼, 이 같은 드럼을 포함하는 기계, 및 이 같은 드럼을 제조하기 위한 방법
CN110387762A (zh) * 2019-07-29 2019-10-29 江门欧佩德晶华轻工机械有限公司 筛棒、筛鼓和压力筛
CN114111268A (zh) * 2021-11-11 2022-03-01 安徽巢湖旺农业科技有限公司 一种新型节能环保型大米干燥设备及其加工工艺
US11301522B1 (en) 2020-12-18 2022-04-12 Korea Internet & Security Agency Method and apparatus for collecting information regarding dark web
JP2022553727A (ja) * 2019-10-25 2022-12-26 フォイト パテント ゲゼルシャフト ミット ベシュレンクテル ハフツング スクリーンシリンダ
US20230249221A1 (en) * 2020-06-22 2023-08-10 Aqseptence Group, Inc. Wood chip sorter screen and related methods of sorting wood chips

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI20075743L (fi) * 2007-10-19 2009-04-20 Metso Paper Inc Menetelmä sihtisylinterin valmistamiseksi ja sihtisylinteri
GB0823286D0 (en) * 2008-12-20 2009-01-28 Stelex Construction Eqipment Ltd Trommel screen
CN102182096A (zh) * 2011-02-25 2011-09-14 山东杰锋机械制造有限公司 一种拼接式的棒条筛鼓
JP5361926B2 (ja) * 2011-03-11 2013-12-04 株式会社東芝 磁気分離装置
EP4338919A3 (fr) * 2013-03-14 2024-10-23 Smart Planet Technologies, Inc. Articles d'emballage composites recyclables et repulpables et procédés associés
CN104941897A (zh) * 2014-03-28 2015-09-30 江苏海建股份有限公司 一种自动筛沙器
DE102014209200B3 (de) * 2014-05-15 2015-04-09 Voith Patent Gmbh Verfahren zur Herstellung einer Siebvorrichtung
USD744541S1 (en) * 2014-09-29 2015-12-01 Amazon Technologies, Inc. Audio input/output device
DE212015000246U1 (de) 2014-10-14 2017-05-19 Aikawa Fiber Technologies Trust Siebzylinder
DE202015006123U1 (de) * 2015-09-04 2016-12-08 Doppstadt Familienholding Gmbh Vorrichtung zur Trennung von gemischtem Gut mit festen und mit flüssigen Anteilen
CN107142771A (zh) * 2017-05-31 2017-09-08 瑞安市金邦喷淋技术有限公司 造纸机的筛鼓
US11213857B2 (en) 2017-06-06 2022-01-04 Derrick Corporation Method and apparatus for screening
TR201820225U5 (tr) * 2017-06-06 2021-01-21 Derrick Corp Eleme usulü ve düzenekleri.
DE102017127562A1 (de) * 2017-11-22 2019-05-23 Voith Patent Gmbh Sieb
DE102017129752A1 (de) * 2017-12-13 2019-06-13 Voith Patent Gmbh Siebherstellverfahren
CN108750603A (zh) * 2018-05-23 2018-11-06 合肥正特机械有限公司 一种高效、有序排列隔套的隔套送料器
DE102018007294A1 (de) * 2018-09-14 2020-03-19 Guntram Krettek Verfahren zum Fixieren eines Bleches und damit hergestellte Filtereinrichtung
MX2021013059A (es) 2019-04-26 2021-12-10 Kadant Black Clawson Llc Cilindro para tamizado con proteccion de ancho de ranura mejorada y metodo de eliminacion de contaminantes solidos de una suspension de solidos.
CN112191023A (zh) * 2020-11-02 2021-01-08 石家庄天诚特种设备有限公司 一种工业条缝筛网及其激光加工工艺
CN113457271B (zh) * 2021-06-22 2022-06-24 浙江水美环保工程有限公司 一种畜禽粪液初步分离装置
US12070776B2 (en) 2022-04-21 2024-08-27 Kadant Black Clawson, Llc Rotor with forward-swept struts for pressure screen cylinders
FR3157216A1 (fr) * 2023-12-21 2025-06-27 Faivre Group Tambour pour un filtre à tambour

Citations (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5061370A (en) * 1990-03-20 1991-10-29 Quebec And Ontario Paper Company Ltd. Screening device for slurries with improved rotor and hub design
US5071543A (en) * 1989-02-16 1991-12-10 Oy Tampella Ab Method of screening pulp and a screening apparatus
US5090721A (en) * 1989-08-23 1992-02-25 J. M. Voith Gmbh Process for manufacturing a screen basket and screen basket made by this process
US5221437A (en) * 1991-07-08 1993-06-22 The Black Clawson Company Screening apparatus for paper making stock
US5605234A (en) * 1995-01-27 1997-02-25 Aikawa Iron Works Co., Ltd. Paper making screen plate
US5647128A (en) * 1994-12-28 1997-07-15 Aikawa Iron Works Co., Ltd. Method of manufacturing paper making screen plate
US5791495A (en) * 1996-03-11 1998-08-11 Beloit Technologies, Inc. Paper pulp screen cylinder
US5798025A (en) * 1997-03-13 1998-08-25 Ishikawajima-Harima Jukogyo Kabushiki Kaisha Apparatus for screening waste paper pulp
US5799798A (en) * 1996-08-23 1998-09-01 Chen; Chao-Ho Screen cylinder for screening high consistency pulp
US5804075A (en) * 1996-06-20 1998-09-08 Aikawa Iron Works Co., Ltd. Papermaking screen having first and second annular supports with immovable space holding and parallel elongated member extending there between
US6047834A (en) * 1996-05-24 2000-04-11 Voith Sulzer Stoffaufbereitung Gmbh Process for the manufacture of a sifting device with slit-shaped openings and an appropriately manufactured sifting device
US6051103A (en) * 1997-12-25 2000-04-18 Aikawa Iron Works Co., Ltd. Paper-making screen apparatus
US6092286A (en) * 1996-08-30 2000-07-25 Lange; Werner Method to fabricate wires and wire fabricated thereby
US6131743A (en) * 1997-06-18 2000-10-17 Hermann Finckh Maschinenfabrik Gmbh & Co. Screen basket for fiber suspensions and method for the production thereof
US6426003B2 (en) * 1996-10-03 2002-07-30 Cae Screenplates Oy Screening device and method of manufacture
US6425486B1 (en) * 1998-01-29 2002-07-30 Gl& V Sweden Ab Cylindrical screen and a method of manufacturing it
US6589424B1 (en) * 1997-10-29 2003-07-08 Metso Paper, Inc. Method of making screen cylinder and screen cylinder
US20040149633A1 (en) * 2001-05-30 2004-08-05 Borje Fredriksson Screen for screening of pulp suspensions
US6789681B2 (en) * 2000-02-19 2004-09-14 Voith Paper Patent Gmbh Screen for fiber suspensions and method for the manufacture thereof
US7125491B2 (en) * 2000-02-03 2006-10-24 Andritz Ag Screen and process for manufacturing a screen of this kind
US20070221544A1 (en) * 2006-03-24 2007-09-27 Chao-Ho Chen Pulp sizing screen

Family Cites Families (72)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US689934A (en) 1901-09-28 1901-12-31 Nathaniel L Vrooman Paper-pulp strainer.
US703682A (en) 1902-02-18 1902-07-01 Nathaniel L Vrooman Paper-pulp strainer.
US2065263A (en) 1932-03-22 1936-12-22 Beldam William Robert Filtering or straining apparatus
SE304439B (fr) 1962-09-28 1968-09-23 Ekstroemsmaskinaffaer A Ab
US3515281A (en) 1968-05-09 1970-06-02 Improved Machinery Inc Backing wire for rotary drum filters
US3837499A (en) 1971-03-29 1974-09-24 Improved Machinery Inc Drum structure for rotary drum filtering apparatus
US3962091A (en) 1973-01-04 1976-06-08 Dorr-Oliver Incorporated Rotary drum filter with wire deck, apparatus and method
GB1472547A (en) 1973-12-11 1977-05-04 Bekaert Sa Nv Wire screens
US4002540A (en) 1974-08-09 1977-01-11 Hendrick Manufacturing Company Screen having parallel slots
GB2033242A (en) 1978-10-20 1980-05-21 Greening N Ltd Screening Apparatus
US4410424A (en) 1980-05-02 1983-10-18 The Black Clawson Company Screening apparatus for paper making stock
WO1988009843A1 (fr) 1987-06-11 1988-12-15 A. Ahlstrom Corporation Appareil d'epuration de pulpe
FR2572950B1 (fr) 1984-11-12 1987-01-23 Lamort E & M Perfectionnements aux tamis pour epurateurs et a leur mode de fabrication
US4855038A (en) 1985-06-20 1989-08-08 Beloit Corporation High consistency pressure screen and method of separating accepts and rejects
JPS62156493A (ja) * 1985-12-27 1987-07-11 永岡金網株式会社 二重筒スクリ−ン
FR2612081B1 (fr) 1987-03-13 1991-02-08 Lamort E & M Perfectionnement aux tamis pour epurateur et a leur mode de fabrication
DE3816152A1 (de) 1987-11-14 1989-11-23 Voith Gmbh J M Siebkorb und verfahren zu dessen herstellung
US5285560A (en) 1988-06-10 1994-02-15 Beloit Technologies, Inc. Method for repairing a screen plate assembly
US4822488A (en) 1988-10-19 1989-04-18 Lavalley Industries, Inc. Vacuum discharge assembly for rotary drum filters
US4986900A (en) 1989-04-04 1991-01-22 A. Ahlstrom Corporation Sectional screen cylinder
DE3942591A1 (de) 1989-12-22 1991-06-27 Voith Gmbh J M Siebkorb
US5139154A (en) 1989-12-27 1992-08-18 Beloit Corporation Wear screen plate and method of manufacture thereof
US5200072A (en) 1990-08-16 1993-04-06 Ahlstrom Screen Plates Inc. Screen plates and methods of manufacture
DE4121896A1 (de) 1991-07-02 1993-01-07 Fiedler Heinrich Gmbh Siebelement
DE4224727A1 (de) 1992-07-27 1994-02-03 Voith Gmbh J M Siebkorb
SE501110C2 (sv) 1993-04-21 1994-11-14 Kvaerner Pulping Tech Silorgan med en silkropp och sätt och anordning för silkroppens tillverkning
US5387340A (en) 1993-07-15 1995-02-07 Ackerman; Carl D. Wire filter element and method of manufacture
CN2195975Y (zh) * 1993-08-06 1995-05-03 陈克新 一种抗断条缝筛板
US5394600A (en) 1994-02-14 1995-03-07 Chen; Chao-Ho Method for making a screen
US5611925A (en) 1994-03-23 1997-03-18 Filtration Systems, Inc. Hub ring and supporting plate for a filter and methods for manufacturing these members
US5513757A (en) 1994-06-02 1996-05-07 Sulzer Papertec Mansfield Inc. Continuous cut slotted screen basket
FI96701B (fi) 1994-09-27 1996-04-30 Tampella Oy Valmet Menetelmä sihtisylinterin valmistamiseksi sekä sihtisylinteri
FR2725737B1 (fr) 1994-10-14 1997-01-31 Lamort E & M Perfectionnements aux tamis d'epuration, notamment pour la pate a papier
US5823355A (en) 1995-03-29 1998-10-20 Beloit Technologies, Inc. Fibresaver screen basket support
US5718826A (en) 1995-05-26 1998-02-17 Cae Screen Plates, Inc. Screen and method of manufacture
FI960438A7 (fi) 1995-09-11 1997-03-12 Ahlstrom Machinery Oy Laitteisto ja menetelmä kuitumassapesurin puhdistamiseksi tahma-aineista
JP3190234B2 (ja) 1995-09-21 2001-07-23 相川鉄工株式会社 製紙用スクリーン
FI100344B (fi) 1995-11-28 1997-11-14 Ahlstrom Machinery Oy Menetelmä lankaseulatuotteen valmistamiseksi ja lankaseulatuote
US20020130075A1 (en) 1999-08-19 2002-09-19 Cae Screenplates Oy Screening device, such as a screen cylinder, and method of manufacture of the screening device
US7188733B2 (en) 1996-10-03 2007-03-13 Advanced Fiber Technologies (Aft) Trust Screening device, such as a screen cylinder, and method of manufacture of the screening device
DE19651643A1 (de) 1996-12-12 1998-06-18 Voith Sulzer Stoffaufbereitung Siebvorrichtung mit spaltförmigen Öffnungen
US5954956A (en) 1997-07-22 1999-09-21 J&L Fiber Services Modular screen cylinder and a method for its manufacture
US6138838A (en) 1998-05-29 2000-10-31 J&L Fiber Services, Inc. Screen media and a screening passage therefore
US5968357A (en) 1998-08-27 1999-10-19 Voith Sulzer Paper Technology North America, Inc. Screen basket having a removable and replaceable cylindrical mesh liner
DE19842042A1 (de) 1998-09-14 2000-03-23 Fiedler Heinrich Gmbh Siebvorrichtung
WO2000065151A1 (fr) 1999-04-27 2000-11-02 Cae Screenplates, Inc. Profil de fil metallique profile a fonctionnalite amelioree
SE515902C2 (sv) 1999-05-26 2001-10-29 Kvaerner Pulping Tech Silcylinder till skruvpress och förfarande för att tillverka silcylindern
FR2794478B1 (fr) 1999-06-04 2001-08-03 Lamort E & M Tamis cylindrique, notamment pour la pate a papier
JP3396456B2 (ja) 2000-02-04 2003-04-14 三菱重工業株式会社 紙料精選装置
US6491168B1 (en) 2000-04-23 2002-12-10 J + L Fiber Services, Inc. Pulp screen basket
FR2809029B1 (fr) 2000-05-16 2002-06-21 Johnson Filtration Systems Procede de fabrication d'un panier mecanique de filtration
JP2001347108A (ja) 2000-06-06 2001-12-18 Aikawa Iron Works Co Ltd 円筒形状のスクリ−ン及びリング片の形成方法
US6649068B2 (en) 2000-06-14 2003-11-18 Andritz Inc. Filtration of pulp mill liquids
DE10052715A1 (de) 2000-10-24 2002-05-02 Fiedler Heinrich Gmbh Spaltsiebanordnung
WO2002083263A1 (fr) 2001-04-16 2002-10-24 J & L Fiber Services, Inc. Epurateur a pate a papier et son procede
JP2003010608A (ja) 2001-07-05 2003-01-14 Aikawa Iron Works Co Ltd 円筒形状のスクリ−ン
GB0120862D0 (en) 2001-08-29 2001-10-17 United Wire Ltd Method and device for joining screens
DE10148192A1 (de) * 2001-09-28 2003-04-17 Fiedler Heinrich Gmbh Spaltsiebanordnung
CN2499431Y (zh) * 2001-10-21 2002-07-10 张�杰 一种棒式波纹筛鼓
US7168570B2 (en) 2001-10-24 2007-01-30 Advanced Fiber Technologies Screen cylinder with performance boosting configuration
CN2616311Y (zh) * 2003-04-11 2004-05-19 马宝星 插接式条缝筛筒
CN2637538Y (zh) * 2003-06-05 2004-09-01 陈肇和 纸浆筛选网
FI119387B (fi) 2003-08-22 2008-10-31 Metso Paper Inc Menetelmä sihtisylinterin valmistamiseksi ja sihtisylinteri
SE0303260D0 (sv) 2003-12-04 2003-12-04 Metso Paper Inc Screening apparatus for screening pulp suspensions with monitoring means
US7374050B2 (en) 2004-04-23 2008-05-20 Andritz Inc. High capacity and high efficiency filter deck assembly
FI119440B (fi) 2004-07-16 2008-11-14 Advanced Fiber Tech Aft Trust Menetelmä seulasylinterin valmistamiseksi ja seulasylinteri
DE102004057859A1 (de) 2004-11-30 2006-06-01 Siebtechnik Gmbh Zentrifugenkorb für eine Siebzentrifuge
US20070074998A1 (en) 2005-10-04 2007-04-05 Langner Herbert Gunther Joachi Method and apparatus for screening kaolin
FI122697B (fi) 2005-11-02 2012-05-31 Metso Paper Inc Sihtisylinteri
DE102006007660A1 (de) 2006-02-22 2007-08-23 Voith Patent Gmbh Verfahren zur Herstellung einer rotations-symmetrischen, insbesondere zylindrischen Siebvorrichtung
DE102006008172A1 (de) 2006-02-22 2007-08-23 Voith Patent Gmbh Verfahren zur Herstellung einer rotationssymmetrischen, insbesondere zylindrischen Siebvorrichtung
JP5465181B2 (ja) 2007-11-14 2014-04-09 フィルトレーション・ファイバーウォール・インコーポレーテッド スクリーンバスケット

Patent Citations (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5071543A (en) * 1989-02-16 1991-12-10 Oy Tampella Ab Method of screening pulp and a screening apparatus
US5090721A (en) * 1989-08-23 1992-02-25 J. M. Voith Gmbh Process for manufacturing a screen basket and screen basket made by this process
US5094360A (en) * 1989-08-23 1992-03-10 J. M. Voith Gmbh Screen basket
US5061370A (en) * 1990-03-20 1991-10-29 Quebec And Ontario Paper Company Ltd. Screening device for slurries with improved rotor and hub design
US5221437A (en) * 1991-07-08 1993-06-22 The Black Clawson Company Screening apparatus for paper making stock
US5647128A (en) * 1994-12-28 1997-07-15 Aikawa Iron Works Co., Ltd. Method of manufacturing paper making screen plate
US5605234A (en) * 1995-01-27 1997-02-25 Aikawa Iron Works Co., Ltd. Paper making screen plate
US5791495A (en) * 1996-03-11 1998-08-11 Beloit Technologies, Inc. Paper pulp screen cylinder
US6047834A (en) * 1996-05-24 2000-04-11 Voith Sulzer Stoffaufbereitung Gmbh Process for the manufacture of a sifting device with slit-shaped openings and an appropriately manufactured sifting device
US5804075A (en) * 1996-06-20 1998-09-08 Aikawa Iron Works Co., Ltd. Papermaking screen having first and second annular supports with immovable space holding and parallel elongated member extending there between
US5799798A (en) * 1996-08-23 1998-09-01 Chen; Chao-Ho Screen cylinder for screening high consistency pulp
US6092286A (en) * 1996-08-30 2000-07-25 Lange; Werner Method to fabricate wires and wire fabricated thereby
US6426003B2 (en) * 1996-10-03 2002-07-30 Cae Screenplates Oy Screening device and method of manufacture
US5798025A (en) * 1997-03-13 1998-08-25 Ishikawajima-Harima Jukogyo Kabushiki Kaisha Apparatus for screening waste paper pulp
US6131743A (en) * 1997-06-18 2000-10-17 Hermann Finckh Maschinenfabrik Gmbh & Co. Screen basket for fiber suspensions and method for the production thereof
US6589424B1 (en) * 1997-10-29 2003-07-08 Metso Paper, Inc. Method of making screen cylinder and screen cylinder
US6051103A (en) * 1997-12-25 2000-04-18 Aikawa Iron Works Co., Ltd. Paper-making screen apparatus
US6425486B1 (en) * 1998-01-29 2002-07-30 Gl& V Sweden Ab Cylindrical screen and a method of manufacturing it
US7125491B2 (en) * 2000-02-03 2006-10-24 Andritz Ag Screen and process for manufacturing a screen of this kind
US6789681B2 (en) * 2000-02-19 2004-09-14 Voith Paper Patent Gmbh Screen for fiber suspensions and method for the manufacture thereof
US20040149633A1 (en) * 2001-05-30 2004-08-05 Borje Fredriksson Screen for screening of pulp suspensions
US20070221544A1 (en) * 2006-03-24 2007-09-27 Chao-Ho Chen Pulp sizing screen

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100263819A1 (en) * 2007-11-14 2010-10-21 Guy Maurais Screen basket
US8297445B2 (en) * 2007-11-14 2012-10-30 Filtration Fibrewall Inc. Screen basket
US20110100901A1 (en) * 2008-05-21 2011-05-05 Comer S.P.A. Improved filtering drum for fibre suspensions in water
KR20160055829A (ko) * 2013-08-29 2016-05-18 보밀 아베 드럼, 이 같은 드럼을 포함하는 기계, 및 이 같은 드럼을 제조하기 위한 방법
US20160199883A1 (en) * 2013-08-29 2016-07-14 Bomill Ab Drum, a machine comprising such drum, and a method for drum and manufacturing of such drum
US10315225B2 (en) * 2013-08-29 2019-06-11 Bomill Ab Drum, a machine comprising such drum, and a method for drum and manufacturing of such drum
KR102357955B1 (ko) * 2013-08-29 2022-02-03 보밀 아베 드럼, 이 같은 드럼을 포함하는 기계, 및 이 같은 드럼을 제조하기 위한 방법
CN110387762A (zh) * 2019-07-29 2019-10-29 江门欧佩德晶华轻工机械有限公司 筛棒、筛鼓和压力筛
JP2022553727A (ja) * 2019-10-25 2022-12-26 フォイト パテント ゲゼルシャフト ミット ベシュレンクテル ハフツング スクリーンシリンダ
US20230249221A1 (en) * 2020-06-22 2023-08-10 Aqseptence Group, Inc. Wood chip sorter screen and related methods of sorting wood chips
US11301522B1 (en) 2020-12-18 2022-04-12 Korea Internet & Security Agency Method and apparatus for collecting information regarding dark web
CN114111268A (zh) * 2021-11-11 2022-03-01 安徽巢湖旺农业科技有限公司 一种新型节能环保型大米干燥设备及其加工工艺

Also Published As

Publication number Publication date
CA2609881A1 (fr) 2006-11-16
WO2006119614A1 (fr) 2006-11-16
CN101171390B (zh) 2011-04-13
CN101171390A (zh) 2008-04-30
EP1880054B1 (fr) 2014-10-15
EP1880054A4 (fr) 2013-02-13
CA2609881C (fr) 2012-05-29
EP1880054A1 (fr) 2008-01-23
US20110005981A1 (en) 2011-01-13
US8469198B2 (en) 2013-06-25

Similar Documents

Publication Publication Date Title
US8469198B2 (en) Screen basket with replaceable profiled bars
US8297445B2 (en) Screen basket
CA2049279C (fr) Toles de criblage et methodes de fabrication
US5791495A (en) Paper pulp screen cylinder
US5954956A (en) Modular screen cylinder and a method for its manufacture
PL153440B1 (en) Rotary shapt assembly, in particular for a disc-type sifter
US4741444A (en) Disc module spacer improvement
US6056126A (en) Screen device with slot-shaped openings
EP2089572B1 (fr) Rouleau de presse pour lavage et/ou égouttage de pulpe, et procédé de fabrication ou réparation de ce rouleau de presse
CA2811636C (fr) Procede de fabrication d'un cylindre de tamis et cylindre de tamis
CN114616057B (zh) 筛筒
EP0439479A1 (fr) Tamis et procede de fabrication correspondant
US20110284430A1 (en) Method of manufacturing a rotor for a screening apparatus, a rotor and a turbulence element for a rotor
WO1997030211A2 (fr) Crible

Legal Events

Date Code Title Description
AS Assignment

Owner name: FILTRATION FIBREWALL INC., CANADA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HETU, MARC-ANDRE;REEL/FRAME:020149/0287

Effective date: 20071026

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION