EP0280094A3 - Filter segment for a filter for thickening a fibrous suspension - Google Patents

Filter segment for a filter for thickening a fibrous suspension Download PDF

Info

Publication number
EP0280094A3
EP0280094A3 EP88101672A EP88101672A EP0280094A3 EP 0280094 A3 EP0280094 A3 EP 0280094A3 EP 88101672 A EP88101672 A EP 88101672A EP 88101672 A EP88101672 A EP 88101672A EP 0280094 A3 EP0280094 A3 EP 0280094A3
Authority
EP
European Patent Office
Prior art keywords
screen
filter
segment
carriers
thickening
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
EP88101672A
Other languages
German (de)
Other versions
EP0280094A2 (en
EP0280094B1 (en
Inventor
Siegfried Hauff
Waldemar Schafer
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 Finckh Fiber Systems GmbH and Co KG
Original Assignee
Hermann Finckh Maschinenfabrik GmbH and Co
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 and Co filed Critical Hermann Finckh Maschinenfabrik GmbH and Co
Priority to AT88101672T priority Critical patent/ATE54967T1/en
Publication of EP0280094A2 publication Critical patent/EP0280094A2/en
Publication of EP0280094A3 publication Critical patent/EP0280094A3/en
Application granted granted Critical
Publication of EP0280094B1 publication Critical patent/EP0280094B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/66—Pulp catching, de-watering, or recovering; Re-use of pulp-water
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/18—De-watering; Elimination of cooking or pulp-treating liquors from the pulp
    • 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
    • D21D5/04—Flat screens
    • D21D5/046—Rotary screens
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
    • Y10S264/48—Processes of making filters

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Filtering Materials (AREA)
  • Inorganic Fibers (AREA)
  • Filtration Of Liquid (AREA)
  • Paper (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

1. A sector-shaped screen segment for rotating disc filters or thickeners with a folded screen for thickening fiber suspensions, comprising a frame (20, 22, 30) having a radially outer leg (20) and a lateral leg (22) at each of its two sides which extend, in particular, in radial direction, two screen carriers (16) being attached to said legs and forming screen supports arranged in axially spaced relationship to one another and, together with a screen (10) resting thereon, the two main surfaces of said screen segment, both said screen carriers (16) and said frame legs (20, 22, 30) being in the form of molded parts, characterized in that said screen (10) is embedded in said frame legs (20, 22, 30) and said screen carriers (16).
EP88101672A 1987-02-27 1988-02-05 Filter segment for a filter for thickening a fibrous suspension Expired - Lifetime EP0280094B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88101672T ATE54967T1 (en) 1987-02-27 1988-02-05 SCREEN SEGMENT FOR FILTERS FOR THICKENING OF FIBER SUSPENSIONS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3706402 1987-02-27
DE3706402A DE3706402C1 (en) 1987-02-27 1987-02-27 Sieve segment for filters for thickening fiber suspensions

Publications (3)

Publication Number Publication Date
EP0280094A2 EP0280094A2 (en) 1988-08-31
EP0280094A3 true EP0280094A3 (en) 1989-03-01
EP0280094B1 EP0280094B1 (en) 1990-07-25

Family

ID=6321947

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88101672A Expired - Lifetime EP0280094B1 (en) 1987-02-27 1988-02-05 Filter segment for a filter for thickening a fibrous suspension

Country Status (7)

Country Link
US (1) US4950403A (en)
EP (1) EP0280094B1 (en)
JP (1) JP2645057B2 (en)
AT (1) ATE54967T1 (en)
CA (1) CA1324344C (en)
DE (2) DE3706402C1 (en)
FI (1) FI85341C (en)

Families Citing this family (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5254250A (en) * 1991-05-30 1993-10-19 Membrex, Inc. Rotary filtration device and filter pack therefor
US5679249A (en) * 1991-12-24 1997-10-21 Pall Corporation Dynamic filter system
AT401069B (en) * 1993-06-23 1996-06-25 Leripa Kunststoff Gmbh & Co Kg Edge seal for dewatering elements
US6117322A (en) * 1993-06-23 2000-09-12 Pall Corporation Dynamic filter system
AT403064B (en) * 1995-09-15 1997-11-25 Andritz Patentverwaltung Disc filter for separating liquids from a suspension, especially fibrous suspension
US5707517A (en) * 1995-11-27 1998-01-13 Membrex, Inc. Immersible rotary disc filtration device
TR199802567T2 (en) 1996-08-20 1999-05-21 Bhler Ag D�z Kalbur Tertibat�
US5766472A (en) * 1996-10-29 1998-06-16 Illinois Tool Works Inc. Method and apparatus for a filter assembly
DE19706601C1 (en) * 1997-02-20 1998-11-12 Buehler Ag Screen frame for plansifter and process for its production
EP1205263B1 (en) * 1997-03-01 2003-12-17 United Wire Limited Method of repairing of a filtering screen and a support frame thereof
US5993674A (en) * 1998-02-24 1999-11-30 Membrex, Inc. Rotary disc filtration device with means to reduce axial forces
DE29815098U1 (en) 1998-08-22 1998-11-05 Schwarzkopf, Josef, 94508 Schöllnach Filter device
DE29815096U1 (en) 1998-08-22 1998-11-05 Schwarzkopf, Josef, 94508 Schöllnach Filter device
US6305549B1 (en) * 1999-07-06 2001-10-23 Southwestern Wire Cloth, Inc. Vibrating screen assembly of dissimilar materials
US20010050250A1 (en) 1999-09-14 2001-12-13 Olli Hognabba Corrosion-resistant filter element
SE526692E (en) 2003-02-27 2013-07-16 Veolia Water Solutions & Tech Module for structure of disk filter
AT412259B (en) * 2003-06-04 2004-12-27 Andritz Ag Maschf METHOD FOR PRODUCING A SECTOR-SHAPED FILTER ELEMENT AND FILTER ELEMENT
US20050027006A1 (en) 2003-07-28 2005-02-03 Reuben Matalon Methods and materials for treating conditions associated with metabolic disorders
US20070108107A1 (en) * 2005-11-15 2007-05-17 Morrow Deborah E Disposable pre-tensioned sieve frame and method of making same
EP1872843A1 (en) * 2006-06-26 2008-01-02 Hydrotech Veolia Water Systems Aktiebolag A filter frame for use in a disc filter
CA2869227C (en) * 2006-08-14 2016-03-08 Evoqua Water Technologies Llc High flow disc filter
US8801929B2 (en) 2007-07-18 2014-08-12 Evoqua Water Technologies Llc Trash tolerant filter support for a disc filter
US8118175B2 (en) 2007-07-18 2012-02-21 Siemens Industry, Inc. Venting device for a disc filter
US8623213B2 (en) * 2008-03-28 2014-01-07 Siemens Water Technologies Llc Hybrid aerobic and anaerobic wastewater and sludge treatment systems and methods
US8894856B2 (en) * 2008-03-28 2014-11-25 Evoqua Water Technologies Llc Hybrid aerobic and anaerobic wastewater and sludge treatment systems and methods
US9359236B2 (en) 2010-08-18 2016-06-07 Evoqua Water Technologies Llc Enhanced biosorption of wastewater organics using dissolved air flotation with solids recycle
SE535159C2 (en) * 2010-09-02 2012-05-02 Veolia Water Solutions & Tech Method of manufacturing a filter segment into a disk filter as well as the filter segment
CN102614703A (en) * 2011-01-31 2012-08-01 江苏博思达环保科技有限公司 Disks for rotary disk filter
CN103917281B (en) * 2011-08-29 2016-02-17 奥维沃卢森堡公司 With the filter sections of lightweight framework
DE102012222400A1 (en) 2012-12-06 2014-06-26 BSH Bosch und Siemens Hausgeräte GmbH Disk filter plate for filter system for filtering intake air of base supporting device, has disk-shaped carrier element and one or multiple filter material elements, which flow at two or multiple surfaces of carrier element
AU2014262972B2 (en) 2013-05-06 2017-09-28 Evoqua Water Technologies Llc Wastewater biosorption with dissolved air flotation
US10857491B2 (en) 2014-06-05 2020-12-08 Evoqua Water Technologies Llc Filtering panel and method of making the same
JP6618554B2 (en) * 2015-07-03 2019-12-11 ガウドフリン Sector with progressive thickness
EP3481527B1 (en) 2016-08-12 2022-07-13 Evoqua Water Technologies LLC Disc filter pre-screen dual media disc filter
PT3526394T (en) * 2016-10-17 2020-10-12 Andritz Oy Screen assembly for pulp digesters and other treatment vessels in pulp production
SE1750701A1 (en) 2017-06-02 2018-10-23 Nordic Water Prod Ab Filter element for use in a filter disc
CN107227649A (en) * 2017-06-13 2017-10-03 太仓市宇航造纸机械厂 A kind of paper grade (stock) double-layer filtering net
US11000791B2 (en) * 2019-03-06 2021-05-11 Veolia Water Solutions & Technologies Support Rotary disc filter having backwash guides
US20220347603A1 (en) * 2021-04-30 2022-11-03 Pall Corporation Filter disk segments

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1685085A (en) * 1924-02-01 1928-09-25 United Filters Corp Dewatering apparatus
US2682205A (en) * 1949-06-28 1954-06-29 Bertram J Vincent Screen plate for papermaking machines
GB1275504A (en) * 1969-06-09 1972-05-24 Improved Machinery Inc Filter segment and method for making same
US3679061A (en) * 1970-06-15 1972-07-25 Envirotech Corp Molded filter leaf

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1746409A (en) * 1926-12-06 1930-02-11 Oliver United Filters Inc Filter leaf
US1767078A (en) * 1927-11-29 1930-06-24 Johnson John Screen for filter presses
US2444147A (en) * 1945-03-15 1948-06-29 Air Maze Corp Liquid filter element
US2964194A (en) * 1957-04-17 1960-12-13 Dorr Oliver Inc Filter construction
US3917534A (en) * 1974-04-17 1975-11-04 Plastic Tech Inc Filter sector
FR2375893A1 (en) * 1976-12-31 1978-07-28 Eurogest Two=part filter casing with an inclined join - enabling construction by injection moulding techniques
US4077887A (en) * 1977-05-17 1978-03-07 Sigmund Coll Langvik Filter disc for vacuum filter system
US4330405A (en) * 1980-09-29 1982-05-18 Davis Kent L Vacuum disc filter
NL8400662A (en) * 1984-03-01 1985-10-01 Amafilter Bv DISC-FILTER ELEMENT.
SE453158B (en) * 1985-02-20 1988-01-18 Bjarne Nilsson DISC FILTER ELEMENT FOR A ROTABLE DISC FILTER

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1685085A (en) * 1924-02-01 1928-09-25 United Filters Corp Dewatering apparatus
US2682205A (en) * 1949-06-28 1954-06-29 Bertram J Vincent Screen plate for papermaking machines
GB1275504A (en) * 1969-06-09 1972-05-24 Improved Machinery Inc Filter segment and method for making same
US3679061A (en) * 1970-06-15 1972-07-25 Envirotech Corp Molded filter leaf

Also Published As

Publication number Publication date
FI85341B (en) 1991-12-31
FI880649A0 (en) 1988-02-12
JPS63219691A (en) 1988-09-13
FI85341C (en) 1992-04-10
DE3860346D1 (en) 1990-08-30
US4950403A (en) 1990-08-21
DE3706402C1 (en) 1988-07-07
EP0280094A2 (en) 1988-08-31
JP2645057B2 (en) 1997-08-25
EP0280094B1 (en) 1990-07-25
FI880649A (en) 1988-08-28
ATE54967T1 (en) 1990-08-15
CA1324344C (en) 1993-11-16

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