CA2293515A1 - Bar screen basket for fiber suspensions and method for the production thereof - Google Patents

Bar screen basket for fiber suspensions and method for the production thereof Download PDF

Info

Publication number
CA2293515A1
CA2293515A1 CA002293515A CA2293515A CA2293515A1 CA 2293515 A1 CA2293515 A1 CA 2293515A1 CA 002293515 A CA002293515 A CA 002293515A CA 2293515 A CA2293515 A CA 2293515A CA 2293515 A1 CA2293515 A1 CA 2293515A1
Authority
CA
Canada
Prior art keywords
screen
cutouts
profiled bars
inlet side
profiled
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.)
Granted
Application number
CA002293515A
Other languages
French (fr)
Other versions
CA2293515C (en
Inventor
Erich Czerwoniak
Hagen Wilhelm Hutzler
Jochen Gustav Pfeffer
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.)
Voith Patent GmbH
Original Assignee
Hermann Finckh Maschinenfabrik Gmbh & Co.
Erich Czerwoniak
Hagen Wilhelm Hutzler
Jochen Gustav Pfeffer
Voith Finckh Fiber Systems Gmbh & Co. Kg
Voith Paper Patent Gmbh
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 Hermann Finckh Maschinenfabrik Gmbh & Co., Erich Czerwoniak, Hagen Wilhelm Hutzler, Jochen Gustav Pfeffer, Voith Finckh Fiber Systems Gmbh & Co. Kg, Voith Paper Patent Gmbh filed Critical Hermann Finckh Maschinenfabrik Gmbh & Co.
Publication of CA2293515A1 publication Critical patent/CA2293515A1/en
Application granted granted Critical
Publication of CA2293515C publication Critical patent/CA2293515C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • B01D29/13—Supported filter elements
    • B01D29/23—Supported filter 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
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/27—Filters with filtering elements which move during the filtering operation with rotary filtering surfaces, which are neither cylindrical nor planar, e.g. helical surfaces
    • B01D33/275—Filters with filtering elements which move during the filtering operation with rotary filtering surfaces, which are neither cylindrical nor planar, e.g. helical surfaces using contiguous impervious 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
    • B07B1/18—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
    • B07B1/4681—Meshes of intersecting, non-woven, elements
    • 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

Abstract

Rotationally symmetrical screen for fiber suspensions with an inlet side and an outlet side for the fiber suspension, with a series of profiled bars which extend transversely to the circumferential direction of the screen and form slot-shaped screen openings between them, the cross section of the profiled bars having an elongate shape with a first end region facing away from the screen outlet side and a second end region facing away from the screen inlet side, and with metallic supporting rings lying in planes extending perpendicularly to the screen axis and being arranged in spaced relation to one another, each of the supporting rings having a series of cutouts open at their edge towards the screen inlet side, the shape of the cutouts - viewed in the direction of the screen axis - corresponding to the configuration of the second cross-sectional end regions of the profiled bars lying in the cutouts, and forming at a radial spacing from the edge of the supporting ring facing the screen inlet side an undercut in which a projection of the profiled bar cross section engages so that the profiled bars are held positively in a radial direction in relation to the screen axis and in the circumferential direction of the screen with their second cross-sectional end regions in the supporting ring cutouts; for a simple and permanently precise fixing of the profiled bars in the supporting rings, the latter are provided on the side of the profiled bars facing the screen outlet side with regions which are deformed such that as a result of a displacement of supporting ring material in the direction towards the screen inlet side, the profiled bar projections are pressed in this direction against the undercuts of the supporting ring cutouts.
CA002293515A 1997-06-18 1998-06-13 Bar screen basket for fiber suspensions and method for the production thereof Expired - Fee Related CA2293515C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19725737A DE19725737A1 (en) 1997-06-18 1997-06-18 Bar screen basket for fiber suspensions and process for its manufacture
DE19725737.2 1997-06-18
PCT/EP1998/003574 WO1998057723A1 (en) 1997-06-18 1998-06-13 Bar screen basket for fiber suspensions and method for the production thereof

Publications (2)

Publication Number Publication Date
CA2293515A1 true CA2293515A1 (en) 1998-12-23
CA2293515C CA2293515C (en) 2004-06-22

Family

ID=7832831

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002293515A Expired - Fee Related CA2293515C (en) 1997-06-18 1998-06-13 Bar screen basket for fiber suspensions and method for the production thereof

Country Status (5)

Country Link
EP (1) EP0989897B1 (en)
AT (1) ATE235293T1 (en)
CA (1) CA2293515C (en)
DE (2) DE19725737A1 (en)
WO (1) WO1998057723A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2403127A1 (en) 2000-02-19 2002-10-11 Voith Finckh Fiber Systems Gmbh & Co. Kg Sieve for fibre suspensions and a method for producing same
IT1315545B1 (en) * 2000-11-13 2003-02-18 Comer Spa METHOD FOR THE MANUFACTURE OF FILTER BASKETS FOR MACHINES DIFILTRATION OF FIBERS IN Aqueous SUSPENSION AND FILTER BASKET
DE102017127562A1 (en) * 2017-11-22 2019-05-23 Voith Patent Gmbh screen
DE102018101666B3 (en) * 2018-01-25 2018-09-20 Voith Patent Gmbh screen cylinder

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3927748C2 (en) * 1989-08-23 1994-03-10 Voith Gmbh J M Process for producing a screen basket and screen basket produced according to this method
SE466706B (en) * 1990-07-20 1992-03-23 Kamyr Ab THE WALL GUARANTEES SEPARATION OF WETAFRAIN FROM A SCIENTIFIC PARTICLE MATERIAL
DE4104615A1 (en) * 1991-02-15 1992-08-20 Voith Gmbh J M SIEVE BASKET
US5394600A (en) * 1994-02-14 1995-03-07 Chen; Chao-Ho Method for making a screen
DE19625726C1 (en) * 1996-06-27 1997-06-12 Voith Sulzer Stoffaufbereitung Wire unit has sorting gaps for fibre suspension

Also Published As

Publication number Publication date
DE59807654D1 (en) 2003-04-30
EP0989897A1 (en) 2000-04-05
EP0989897B1 (en) 2003-03-26
ATE235293T1 (en) 2003-04-15
DE19725737A1 (en) 1998-12-24
WO1998057723A1 (en) 1998-12-23
CA2293515C (en) 2004-06-22

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed