EP1161308A1 - Cylindre classeur a element tamis helicoidal pour machine a papier - Google Patents

Cylindre classeur a element tamis helicoidal pour machine a papier

Info

Publication number
EP1161308A1
EP1161308A1 EP99966336A EP99966336A EP1161308A1 EP 1161308 A1 EP1161308 A1 EP 1161308A1 EP 99966336 A EP99966336 A EP 99966336A EP 99966336 A EP99966336 A EP 99966336A EP 1161308 A1 EP1161308 A1 EP 1161308A1
Authority
EP
European Patent Office
Prior art keywords
strip
screen
screening
screen plate
cylindrical
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.)
Withdrawn
Application number
EP99966336A
Other languages
German (de)
English (en)
Other versions
EP1161308A4 (fr
Inventor
David E. Chupka
Gary S. Williamson
Stephen M. Weatherly
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.)
Thermo Black Clawson Inc
Original Assignee
Thermo Black Clawson 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 Thermo Black Clawson Inc filed Critical Thermo Black Clawson Inc
Publication of EP1161308A1 publication Critical patent/EP1161308A1/fr
Publication of EP1161308A4 publication Critical patent/EP1161308A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • B01D29/31—Self-supporting filtering elements
    • B01D29/33—Self-supporting filtering elements arranged for inward flow filtration
    • B01D29/333—Self-supporting filtering elements arranged for inward flow filtration with corrugated, folded 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
    • B01D29/31—Self-supporting filtering elements
    • B01D29/35—Self-supporting filtering elements arranged for outward flow filtration
    • B01D29/353—Self-supporting filtering elements arranged for outward flow filtration with corrugated, folded filtering elements
    • 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
    • B07B1/20—Stationary drums with moving interior agitators
    • 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
    • B07B1/469—Perforated sheet-like material
    • 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

Definitions

  • the paper making stock suspension may contain new fibers or may contain a large amount of reclaimed fiber material, or both.
  • the screening apparatus commonly employed uses a generally cylindrical perforated screening member in a closed pressure housing.
  • the screening member divides an internal chamber of the pressure housing into an inlet chamber and an accepts chamber respectively on opposite sides of a perforated screen.
  • the inlet chamber may be considered as the high pressure side of the screen and the accepts chamber, the low pressure side of the screen.
  • Such pressure screening apparatus commonly employs a rotor that operates to move vanes, foils or other impulse members at high speed along one of the surfaces of the screen, usually at the high pressure side, to keep the screening perforations open and free from plugging or blinding with solid material.
  • the stock suspension, or "furnish” as it is called is delivered to the inlet chamber adjacent one end of a screening cylinder, and the material rejected by the screening cylinder is collected and discharged at its opposite end.
  • Prior patents that disclose such apparatus including screening cylinders and impulse foils for this purpose are shown for example in the U.S. patent of Hatton et al.
  • the rotor has impulse members or vanes, preferably of an airfoil cross section, that move in closely spaced but non-contacting relation with a surface of a cylindrical screen member, preferably, an inner inlet high pressure surface. These vanes create alternating positive and negative pressure waves that are effective on the perforations in the screening cylinder to prevent plugging thereof, and to permit the pressure screen apparatus to operate at high capacity.
  • the screen cylinder perforations may be either slots or holes.
  • screening holes are shown in Martindale U.S. patent 2,835,173, and machined slots are shown in Lehman 4,276,159. Additionally, laser cutting has been used to form either slots or holes in the screening material, as shown in the U.S. patent of Chupka 4,795.360.
  • a screen having a wall thickness of about 3/16 inch or greater has resulted in a high materials and manufacturing costs.
  • a 24 inch diameter screen cylinder approximately 24 inches high, may weigh up to 150 pounds or more.
  • the screening surface may be precision machine cut or laser cut, or combinations of both, including in some cases EDM cutting, to provide the closely spaced openings in the form of holes or slots in order to provide a screen with a desired openness.
  • the thickness of the screening wall has necessitated tedious, time consuming, and expensive slotting and cutting techniques, adding to the labor cost of preparing such screen cylinders. Therefore, a need exists for lighter weight and lower cost screen cylinder member for papermaker's closed pressure screening apparatus, for screening slurries or suspensions of papermaker's stock.
  • This invention is directed to an improved lighter weight and lower cost cylinder screen member for use in pressure screening apparatus for screening papermaker's stock, in which the screening portion includes a generally cylindrical tubular section of helically wound, endless strip or strips of sheet material, joined along the edges.
  • the strip sheet material is preferably transversely corrugated so that the axes of the corrugations extend generally parallel to the length of the strip for imparting radial stiffness.
  • the wall thickness of the corrugated strip is substantially thinner than that required by conventional screen cylinders, as outlined above, and may, for example, have a thickness of about .060 inch or less.
  • the screening openings or perforations therethrough may be made by pre- perforating the strip material or by perforating the screen wall by cutting, drilling, or laser cutting, after the same has been formed into a cylinder. Therefore, the screen cylinder of this invention is not necessarily limited to punched perforations or holes, and screening slots may be cut therein as well.
  • helically wound strip material such as stainless steel sheet metal.
  • the strip material is corrugated along its length, a substantial gain in strength or radial stiffness is imparted to the completed cylindrical section.
  • strength is imparted by the creased interlocking seams formed at the respective marginal edges of the strip material.
  • lock seams are formed in which the edges are interlocked, folded and pressed flat against each other.
  • the seams also may be resistance welded during the forming process.
  • the seams may be welded with or without flux.
  • the seams may be rolled into a relationship with a cylinder so that they may be either "inside” or "outside.” It is preferred, in the construction of the cylinders according to this invention, to form the seams so that the major portion of the seam thickness extends inwardly in relation to the inlet surface, as the case may be. In this manner, the seams tend to form a spiral guideway that augments the flow of the rejects along the screen surface to the rejects outlet.
  • the axes of the corrugations which extend parallel to the seams, similarly induce a flow of the stock slurry and rejects toward the screen outlet. These effects depend upon selecting the direction of the helix in relation to the direction of rotation of the rotor such that paper stock material not accepted by the screen moves generally in the axial direction toward the accepts outlet of the pressure screening apparatus.
  • Stainless steel end rings may be welded in place to the ends of the screen section, for fitting and supporting the screen in the screening cavity of the screening apparatus.
  • This application further describes a new and novel arrangement using polymer, plastic or composite retainer rings molded in place over the exposed ends of a cylindrical section of helically wound screen material. Pins or other retainer members may be inserted through the openings in the screen material to be embedded in the ring material to serve as anchors for retaining the ends of the screen in the polymer or composite rings.
  • the invention may be characterized as a screen cylinder member for screening papermaker's stock in pressure screening apparatus in which the screening surface is formed as a helix or as a helically wrapped sheet metal strip welded or joined at the margins.
  • the helix cylinders may be supported by end rings.
  • the strip material is also corrugated transversely of its width to impart additional strength to the strip.
  • One or two end rings may be used, positioned at one or both ends of a cylindrical screen plate made according to this invention, for the purposes of mounting in a paper making screen and/or for providing a seal between the spaces which extend at each side of the plate.
  • Such rings accommodate the diametrical variations that result from the seams and/or the corrugations, and serve to center an enveloping screen cylinder surface of the screen cylinder plate at the center of rotation of the screen rotor apparatus.
  • one or more of the end rings are formed of a molded polymer, fiberglass or composite material in which the ends of a helically wound screen are embedded in such material and retained therein by anchoring elements.
  • a papermaker ' s screen member is formed with a screening member defined as a helix of a continuous sheet metal strip, joined by interlocking edges, and in which the sheet metal strip is corrugated in a direction along its length to increase the strength, and in which the strip is perforated or otherwise formed with screening openings either in the form of holes or slots.
  • the slots may extend longitudinally or transversely of the direction of the strips and the perforations or openings may be formed in the strip prior to processing into helix tubing, or during the processing, such as by concomitant punching or cutting, or subsequent to forming the tubing, such as by cutting, punching, drilling, or ablading such as by laser or EDM.
  • the screen by this invention also provides a further and unexpected advantage over conventional screen plates used in papermaker's pressure screen apparatus. That is, the thinness of the screening wall reduces to at least 50% or more the usual thickness through which accept fibers must pass through openings or slots and reduces the chance of hole plugging compared to that of conventional screen plates, at least without expensive profiling of the plate surface or surfaces in order to reduce the effective length of the opening.
  • the thinner plate can screen fibers with reduced friction or pressure drop as compared to plates of convention thickness, and therefore exhibits a higher throughput and efficiency.
  • An important advantage of the invention is that it provides the ability of using pre-perforated material in the manufacture of a paper stock screening member.
  • a further advantage of the invention is that the screening material may be helically formed in long tubes and stored for future use and then sections cut off of the tubes, to form a screening member for a screen plate.
  • a still further object of advantage resides in a method for manufacturing a screen cylinder element for paper making screens, as described above, including the steps of forming a very long cylindrical tube from long and substantially flat strip or perforated strip material, and then cutting the tube into cylindrical segments of the desired axially length. Such segments may be formed from a continuously formed spiral tube in which the segments are cut off as the tube is made.
  • Fig. 1 is a top plan view of a screen made according to this intention
  • Fig. 2 is a partially broken away side elevation view of a screen of Fig. 1
  • Fig. 3 is an enlarged fragmentary detail looking generally along line 3- -3 of Fig. 1 showing the manner in which the screen portion is attached to a metal end ring such as by welding;
  • Fig. 4 is an enlarged fragmentary' cross-sectional detail of a transverse portion of the corrugated strip of sheet material
  • Fig. 5 is an enlarged plan view of a typical hole pattern that may be used with this invention.
  • Fig. 6 is a fragmentary section of a strip of sheet metal showing one arrangement or pattern by which the screen may be slotted;
  • Fig. 7 is an enlarged fragmentary view showing the manner in which a polymer, fiberglass or other composite ring may be attached to the screen strip material, at one or both of the end rings; and
  • Fig. 8 is a enlarged sectional view through one of the seams joining the marginal edges of a helix wound strip, the view showing the seam connection prior to rolling and welding.
  • a cylindrical screen cylinder element made according to this invention is illustrated generally at 10 in Figs. 1 and 2.
  • reference numeral 11 referres to a helically wound screen section or body, generally cylindrical in shape, with circumferential ends respectively received in mounting rings 12 and 13.
  • At least one of the mounting rings, such as the ring 13 in Fig. 1, is provided with conventional bolt openings 14 by which the screen cylinder element 10 may be received and mounted within the pressure screening apparatus.
  • the cylindrical screen body 11 is made or rolled as a helix tube from a single continuous length or substantially flat strip of sheet metal by helix tube forming apparatus, such as that shown in U.S. patent 5,609,055.
  • the helix screen body 11 has a plurality of side-by-side joined strip sections 15 formed as a continuous strip 16 (Fig. 4) of sheet material that has been rolled and welded in a helix over a mandrel to a cylindrical shape, with the butting edges interlocked, rolled and optionally welded, at helical seams 18, as shown in Fig. 8.
  • the lateral space of the strip 16 between the seams is preferably corrugated in an approximate sinusoidal manner such as by rolling or forming a flat sheet metal strip.
  • a corrugation pattern consists of reverse partial cylindrical arcuate sections joined with radii as shown so as to form a continuous pattern of ridges 21 and valleys 22 extending across the width of the strip, such that the axes 23 (Fig. 2) of the corrugations extend parallel to the length of the strip.
  • the invention is not intended to be limited to the particular form of corrugation as illustrated in Fig. 4.
  • the purpose of the corrugations is to provide high radial stiffness to the co-joined strip segments.
  • the waviness provided by the corrugations, as illustrated in Fig. 4. as well as the seams 18 provide a further unexpected advantage.
  • the waviness and the marginal seams produce, with the rotating foils, regions of microturbulence that assist in maintaining the perforations or openings in the body 11 in an open state.
  • a pattern of perforations or openings 24 may be preformed in the strip material, from a common roll of stainless steel of, as example, a thickness of 0.60 inches as noted above.
  • Fig. 5 illustrates a preferred 60° pattern of perforations forming cylindrical openings 24 that may be as small as 0.008 inches or smaller or larger. It is not intended that the invention be limited to a particular hole pattern or sizes.
  • Fig. 6 diagrammatically illustrates how a pattern of slots 25 may be formed in the strip material. It is also within the scope of the invention to employ unperforated or unslotted strip material in making the helix screen body 11 and thereafter forming the desired openings through the formed cylindrical body by laser cutting, by EDM machining, by high pressure water cutting, or other equivalent means including mechanical cutting and drilling.
  • a particular advantage of the screen cylinder of this invention resides in the fact that the material used for the strip 16 has a thickness permitting high speed perforation at relatively low cost.
  • the seams or continuous seam 18 are formed in interlocking manner in which each of the adjacent edges form interlocking loops 26 which loops are then rolled tight with pressure applied as shown by the arrows 30 of Fig. 8.
  • the seams may be continuously heat welded such, as by using arc or high intensity electricity, with or without flux, to form an integral and continuous seam.
  • the seam 18 as shown in Fig. 8, consisting essentially of four thickness of the material of the strip 16, may be located on the "inside” or “outside” circumference of the cylinder as dictated by the rolling equipment.
  • the seam In the case of the screen cylinder 10. it is preferred that the seam be placed at the inlet surface, usually the inner surface, of the screen. In this manner, the slightly elevated helically rib that is formed by the seams can, together with the undulating corrugations, serve as spiral channels leading from one axial end of the screen to the other, as the impulse foils are rotated.
  • Fig. 3 illustrates a preferred method by which the helix screen bod)' section 11 may be attached to one of the end rings, such as the end ring 13.
  • the end ring 13 is formed of metal and provided with an L-shaped slot or opening 32.
  • the cylindrical edges of the section 11 are inserted into the slot and welded in place such as by the weld 35.
  • the opposite end ring 12 may be attached by the same method.
  • a 24 inch diameter, a 24 inch high screen according to this invention was instructed using stainless steel strip material having a wall thickness of 0.060 inches (16 gauge).
  • the screen was transversely corrugated so that the axis of the corrugations extended parallel to the edges of the screen, and the lead angle of the helix was about 20°, as shown in Fig. 2.
  • the pitch of the corrugations, between ridges 21 was 0.625 inches.
  • the strip 15 was pre-perforated with holes 24 of about 0.062 inches in diameter at a hole spacing of about 0.14 inches to provide an approximately 12% open area.
  • a corrugated strip 16 was nominally 6 inches wide providing an effective width of about 5.6 inches after seaming thereby providing seams 18 at about 5.6 inch spacings.
  • the radius of curvature of the corrugations was approximately 0.19 inches (measured to the surface of the plate) and when taken together with the thickness of the plate, provided an effective thickness dimension "d" as shown in Fig. 4 of 0.25 inches.
  • a radial thickness of the screen at the seams was about 0.24 inches.
  • the perforated openings were on a 60° pattern, on 0.170 centers, dimension A as illustrated in Fig. 5.
  • the end rings were made of stainless steel and attached as shown in Fig. 3.
  • the screen weighed 60 pounds. It is within the scope of the invention to utilize low cost and lighter weight support rings made of polymer, fiberglass, filled or composite material, as illustrated in Fig. 7.
  • the ring 36 is formed of such composite or polymer material and is molded in place about each of the axial ends of the body 11. Locking anchors in the form of pins 40 may be inserted through perforations formed in the marginal edges or the ends of the screening sheet material to be molded into and engage the material forming the ring 36 prior to curing.
  • the ring which may have the general overall configuration of the ring shown in Fig. 3, can be bonded to each of the ends of the body 11.
  • the use or a polymer of composite material for the rings permits an additional substantial savings in cost, and the use of such support rings is possible due to the inherent strength of the helically wound corrugated screening body 11.
  • Apparatus for forming a strip of sheet material into a continuous helix as well known in the art as shown in U.S. patent 5,604,055, and equipment for this purpose may be acquired from a number of companies including Spiral-Helix, Inc. at 999 Dearfield Parkway, Buffalo Grove, Illinois 60089 USA.
  • a helix tube formed in this manner may have indefinite length and predetermined diameter, and after forming may be cut in lengths to correspond to the proposed height of the cylindrical screening body 11 taking into account the dimensions of the end rings to be applied. Therefore, screening material can be helically wound and formed, as described above, and then cut to desired axial lengths as needed for particular machines.
  • the seamed tube may be continuously formed with cylindrical segments being cut off as the tube is made.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Filtration Of Liquid (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)

Abstract

L'invention concerne un cylindre classeur (10) de machine à papier, qui comporte un corps (11) de tamis formé d'une bande hélicoïdale (15) de matière en feuille jointe au niveau de ses bords marginaux de façon à former des joints sertis (18), montée sur des anneaux terminaux (12, 13). La bande (15) peut être préalablement perforée d'orifices, telles que des trous, ou peut posséder des orifices ou trous formés après l'enroulement de la bande en hélice. Cette bande (15) est de préférence ondulée dans le sens de la longueur, les ondulations (21, 22) s'étendant parallèlement aux bords de la bande de façon à en augmenter la résistance à la flexion. Les anneaux terminaux peuvent être constitués d'acier inoxydable, d'un polymère ou d'une matière composite (36), sont apposés sur les extrémités du corps du tamis cylindrique et sont retenus par des attaches intégrées (40) traversant le corps du tamis et s'ancrant dans le matériau des anneaux.
EP99966336A 1998-12-23 1999-12-16 Cylindre classeur a element tamis helicoidal pour machine a papier Withdrawn EP1161308A4 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US11345698P 1998-12-23 1998-12-23
US113456P 1998-12-23
PCT/US1999/029951 WO2000038849A1 (fr) 1998-12-23 1999-12-16 Cylindre classeur a element tamis helicoidal pour machine a papier

Publications (2)

Publication Number Publication Date
EP1161308A1 true EP1161308A1 (fr) 2001-12-12
EP1161308A4 EP1161308A4 (fr) 2002-05-29

Family

ID=22349544

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99966336A Withdrawn EP1161308A4 (fr) 1998-12-23 1999-12-16 Cylindre classeur a element tamis helicoidal pour machine a papier

Country Status (6)

Country Link
EP (1) EP1161308A4 (fr)
JP (1) JP2003506578A (fr)
CN (1) CN1354698A (fr)
BR (1) BR9916541A (fr)
CA (1) CA2356137A1 (fr)
WO (1) WO2000038849A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012069699A1 (fr) 2010-11-23 2012-05-31 Aikawa Fiber Technologies Oy. Procédé de fabrication d'un cylindre de tamisage et cylindre de tamisage

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108890232A (zh) * 2018-07-24 2018-11-27 哈尔滨金阳光管业有限责任公司 一种带孔的螺旋波纹卷管的制备方法
CN109772677B (zh) * 2019-01-23 2021-05-25 广东萨米特陶瓷有限公司 一种多孔径滚笼筛及其制备含颗粒元素陶瓷制品的方法
CN113857027A (zh) * 2021-10-13 2021-12-31 双牌县丰泰农机设备有限公司 一种粮食筛选机

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0453348A1 (fr) * 1990-04-18 1991-10-23 E & M LAMORT Tamis pour épurateur et classificateur de pâte à papier
US5128028A (en) * 1988-08-12 1992-07-07 E & M Lamort Sieve for paper pulp strainer and classifier
EP0511182A2 (fr) * 1991-04-24 1992-10-28 Dynasafe AB Dispositif de protection contre les ondes de choc et les éclats

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Publication number Priority date Publication date Assignee Title
SU994048A1 (ru) * 1981-09-25 1983-02-07 Киевский Филиал Ленинградского Специального Конструкторского Бюро По Проектированию Кожгалантерейных,Обувных,Меховых Машин И Средств Автоматизации Министерства Машиностроения Для Легкой И Пищевой Промышленности И Бытовых Приборов Сортировочное устройство
FR2676076B1 (fr) * 1991-05-03 1993-08-06 Lamort E & M Couronne d'extremite de tamis cylindrique pour epurateur et classificateur de pate a papier et son procede de realisation.
SE500893C2 (sv) * 1993-02-10 1994-09-26 Sunds Defibrator Ind Ab Trycksilanordning
US5507396A (en) * 1994-11-29 1996-04-16 Carter Day International, Inc. Rotating sizer with screen panels
US6016921A (en) * 1997-12-01 2000-01-25 Carter Day International, Inc. Sizing panel for rotating cylindrical separator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5128028A (en) * 1988-08-12 1992-07-07 E & M Lamort Sieve for paper pulp strainer and classifier
EP0453348A1 (fr) * 1990-04-18 1991-10-23 E & M LAMORT Tamis pour épurateur et classificateur de pâte à papier
EP0511182A2 (fr) * 1991-04-24 1992-10-28 Dynasafe AB Dispositif de protection contre les ondes de choc et les éclats

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO0038849A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012069699A1 (fr) 2010-11-23 2012-05-31 Aikawa Fiber Technologies Oy. Procédé de fabrication d'un cylindre de tamisage et cylindre de tamisage

Also Published As

Publication number Publication date
CN1354698A (zh) 2002-06-19
CA2356137A1 (fr) 2000-07-06
JP2003506578A (ja) 2003-02-18
WO2000038849A1 (fr) 2000-07-06
BR9916541A (pt) 2001-09-11
EP1161308A4 (fr) 2002-05-29

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