GB1032969A - Screening device - Google Patents

Screening device

Info

Publication number
GB1032969A
GB1032969A GB20093/64A GB2009364A GB1032969A GB 1032969 A GB1032969 A GB 1032969A GB 20093/64 A GB20093/64 A GB 20093/64A GB 2009364 A GB2009364 A GB 2009364A GB 1032969 A GB1032969 A GB 1032969A
Authority
GB
United Kingdom
Prior art keywords
screen
foil
foils
screens
rejected material
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.)
Expired
Application number
GB20093/64A
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.)
Canadian Ingersoll Rand Co Ltd
Bird Machine Co Inc
Original Assignee
Canadian Ingersoll Rand Co Ltd
Bird Machine Co 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 Canadian Ingersoll Rand Co Ltd, Bird Machine Co Inc filed Critical Canadian Ingersoll Rand Co Ltd
Publication of GB1032969A publication Critical patent/GB1032969A/en
Expired legal-status Critical Current

Links

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
    • D21D5/023—Stationary screen-drums
    • D21D5/026—Stationary screen-drums with rotating cleaning foils
    • 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
    • B01D29/114—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 inward flow filtration
    • B01D29/115—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 inward flow filtration open-ended, the arrival of the mixture to be filtered and the discharge of the concentrated mixture are situated on both opposite sides of the filtering element
    • 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
    • B01D29/118—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 open-ended
    • 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
    • B01D29/15—Supported filter elements arranged for inward flow filtration
    • B01D29/17—Supported filter elements arranged for inward flow filtration open-ended the arrival of the mixture to be filtered and the discharge of the concentrated mixture are situated on both opposite sides of the filtering element
    • 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
    • B01D29/25—Supported filter elements arranged for outward flow filtration open-ended the arrival of the mixture to be filtered and the discharge of the concentrated mixture are situated on both opposite sides of the filtering element
    • 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
    • B01D29/50—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 multiple filtering elements, characterised by their mutual disposition
    • B01D29/52—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 multiple filtering elements, characterised by their mutual disposition in parallel connection
    • B01D29/54—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 multiple filtering elements, characterised by their mutual disposition in parallel connection arranged concentrically or coaxially
    • 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
    • B01D29/76—Handling the filter cake in the filter for purposes other than for regenerating
    • B01D29/86—Retarding cake deposition on the filter during the filtration period, e.g. using stirrers
    • 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
    • D21D5/06—Rotary screen-drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/28—Position of the filtering element
    • B01D2201/287—Filtering elements with a vertical or inclined rotation or symmetry axis

Abstract

1,032,969. Screening devices. CANADIAN INGERSOLL-RAND CO. and BIRD MACHINE CO. May 14,1964 [May 17,1963], No. 20093/64. Heading B1D. A cylindrical screen 12 or 14 is cleaned by at least one elongated foil 22 rotating about the screen axis, the foil being supported only at one end and its spacing from the screen varying along its length, when the foil is at rest, to an extent which is cancelled by bending of the foil under centrifugal force when the foil rotates, so that the foil is parallel to the screen surface when rotating. Figure 1 shows a pair of coaxial screens 12, 14. Fibrous paper pulp is pumped into annular space 18 between the screens, strained pulp leaves at 38 and rejected material is trapped at 40. Rotatable spider 24 carries four foils (20), 22, foils (20) acting on the outer face of inner screen 12, foils 22 on the inner face of outer screen 14. Figure 6 (not shown) illustrates how a foil (20) is mounted, at an angle (B<SP>2</SP>) to the screen 12, on the spider 24 by a skim (522), and a key (562). Foil (20), at rest, is closest to screen 12 at its free, lower end. The foils may be helical in form to push rejected material towards 40. The screens may be slightly conical (Fig. 9 not shown). Figures 11,12 (not shown) illustrate foils in cross-section which direct rejected material away from the screen.
GB20093/64A 1963-05-17 1964-05-14 Screening device Expired GB1032969A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US281297A US3261468A (en) 1963-05-17 1963-05-17 Screen cleaning device

Publications (1)

Publication Number Publication Date
GB1032969A true GB1032969A (en) 1966-06-15

Family

ID=23076703

Family Applications (2)

Application Number Title Priority Date Filing Date
GB33312/65A Expired GB1032970A (en) 1963-05-17 1964-05-14 Screening device
GB20093/64A Expired GB1032969A (en) 1963-05-17 1964-05-14 Screening device

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB33312/65A Expired GB1032970A (en) 1963-05-17 1964-05-14 Screening device

Country Status (5)

Country Link
US (1) US3261468A (en)
DE (1) DE1250726B (en)
FI (1) FI42789C (en)
GB (2) GB1032970A (en)
SE (2) SE313986B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29515338U1 (en) * 1995-09-25 1995-11-23 Fiedler Heinrich Gmbh Wings for sorting devices

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3387708A (en) * 1966-01-24 1968-06-11 Beloit Corp Paper machine screen
US3420373A (en) * 1966-04-01 1969-01-07 Allen Bruce Hunter Pulp screens
SE305197B (en) * 1966-12-19 1968-10-21 Celleco Ab
FI46642C (en) * 1972-02-03 1973-05-08 Yhtyneet Paperitehtaat Oy Pressure strainer.
US4097374A (en) * 1977-01-26 1978-06-27 Canadian Ingersoll-Rand Co. Ltd. Screening apparatus hydrofoil
US4396502A (en) * 1982-03-18 1983-08-02 Beloit Corporation Screening apparatus for a papermaking machine
FR2543183B1 (en) * 1983-03-25 1985-07-26 Lamort E & M METHOD AND DEVICE FOR SORTING A MIXTURE OF PAPER PULP AND IMPURITIES
DE3734974A1 (en) * 1986-10-21 1989-04-20 Baehr Albert DEVICE FOR DRAINING SLUDGE AND SIMILAR SUBSTANCES
DE3635767A1 (en) * 1986-10-21 1988-04-28 Albert Baehr PRE-DRAINAGE LEVEL FOR DRAINING SLUDGE AND SIMILAR SUBSTANCES
FI80736B (en) * 1989-02-16 1990-03-30 Tampella Oy Ab FOERFARANDE FOER SORTERING AV MASSASUSPENSION OCH SORTERINGSAPPARAT.
US6511598B2 (en) 1997-09-02 2003-01-28 Moshe Gershenson Concentrically arranged filter element assembly
US6030531A (en) * 1997-09-02 2000-02-29 Gershenson; Moshe Filter element assembly
JP3396456B2 (en) 2000-02-04 2003-04-14 三菱重工業株式会社 Stock selection equipment
US20040124129A1 (en) * 2002-12-31 2004-07-01 H-Tech, Inc. Filter element assembly and parts therefor
TWI387478B (en) 2005-08-31 2013-03-01 Eaton Corp Fluid filter
FI125599B (en) 2010-11-12 2015-12-15 Valmet Technologies Inc Sheet of fiber pulp sorting machine, fiber pulp sorting machine and method for sorting fiber pulp
CN113584923A (en) * 2021-09-01 2021-11-02 安德里茨（中国）有限公司 Pulp screening machine

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US439700A (en) * 1890-11-04 Centrifugal pulp-drier
DE24801C (en) * H. BETCHE in Berlin, Hollmannstr. 6 pt Device for removing the suspended matter that accumulates on the walls of centrifuges for cleaning waste water
US641773A (en) * 1899-05-13 1900-01-23 Henry Hoeschen Centrifugal machine.
AT28226B (en) * 1904-10-31 1907-04-25 Hans Stub Centrifugal sorter for wood pulp or the like.
BE427532A (en) * 1937-04-15
NL51130C (en) * 1937-05-11
US2868500A (en) * 1949-02-15 1959-01-13 Boulet George Cooling of blades in machines where blading is employed
DE822325C (en) * 1950-08-20 1951-11-26 F H Schule G M B H Separating classifier with vertical classifier
US2796809A (en) * 1954-07-06 1957-06-25 Nat Gypsum Co Pulp screening apparatus
GB773742A (en) * 1954-07-19 1957-05-01 Luwa Ag A thin-layer evaporator with high-speed agitating means
US2975899A (en) * 1957-04-16 1961-03-21 Bird Machine Co Screening device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29515338U1 (en) * 1995-09-25 1995-11-23 Fiedler Heinrich Gmbh Wings for sorting devices

Also Published As

Publication number Publication date
SE339613B (en) 1971-10-11
DE1250726B (en) 1967-09-21
GB1032970A (en) 1966-06-15
FI42789C (en) 1970-10-12
SE313986B (en) 1969-08-25
US3261468A (en) 1966-07-19
FI42789B (en) 1970-06-30

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