GB2267658A - Filtering apparatus - Google Patents

Filtering apparatus

Info

Publication number
GB2267658A
GB2267658A GB9315297A GB9315297A GB2267658A GB 2267658 A GB2267658 A GB 2267658A GB 9315297 A GB9315297 A GB 9315297A GB 9315297 A GB9315297 A GB 9315297A GB 2267658 A GB2267658 A GB 2267658A
Authority
GB
United Kingdom
Prior art keywords
drum
filtering
elements
liquid
continuous
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
GB9315297A
Other versions
GB2267658B (en
GB9315297D0 (en
Inventor
Edward Victor Byers
Michael Richard Byers
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.)
Severn Trent Water Ltd
Original Assignee
Severn Trent Water Ltd
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
Priority claimed from GB919102018A external-priority patent/GB9102018D0/en
Priority claimed from GB919103890A external-priority patent/GB9103890D0/en
Application filed by Severn Trent Water Ltd filed Critical Severn Trent Water Ltd
Publication of GB9315297D0 publication Critical patent/GB9315297D0/en
Publication of GB2267658A publication Critical patent/GB2267658A/en
Application granted granted Critical
Publication of GB2267658B publication Critical patent/GB2267658B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • B01D33/15—Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces
    • 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
    • B01D33/35—Filters with filtering elements which move during the filtering operation with multiple filtering elements characterised by their mutual disposition
    • B01D33/37—Filters with filtering elements which move during the filtering operation with multiple filtering elements characterised by their mutual disposition in parallel connection
    • B01D33/39—Filters with filtering elements which move during the filtering operation with multiple filtering elements characterised by their mutual disposition in parallel connection concentrically or coaxially
    • 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
    • B01D33/44—Regenerating the filter material in the filter
    • B01D33/48—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
    • B01D33/50—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
    • 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
    • B01D33/70—Filters with filtering elements which move during the filtering operation having feed or discharge devices
    • B01D33/76—Filters with filtering elements which move during the filtering operation having feed or discharge devices for discharging the filter cake, e.g. chutes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtration Of Liquid (AREA)

Abstract

Filtration apparatus for continuous separation of residues of solids from liquid filtrates comprises a rotatably mounted drum (1) of cylindrical form with a plurality of filtering elements (5) in each end wall (2). Materials to be filtered are introduced into the drum (1) through a duct (8) and filtrate passes out through one or more of the filter elements (5) at a lower part of the drum (1). Spraying nozzles (16) are disposed adjacent to the end walls (2) to direct jets of liquid on to the filtering elements (5) at an upper part of the drum (1), thus backwashing the elements (5). Backwashed material is collected within the drum (1) and led away through the duct (8) to waste. Continuous rotation of the drum ensures that each element (5) alternately filters liquid and is backwashed. A filtering element (5) suitable for use with the apparatus has a mesh (M) supported at its periphery between curved bearing surfaces (40; 42) to minimise cyclic stresses in the mesh caused by continuous filtering and backwashing cycles.
GB9315297A 1991-01-30 1992-01-28 Filtering apparatus Expired - Fee Related GB2267658B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB919102018A GB9102018D0 (en) 1991-01-30 1991-01-30 Filtration device
GB919103890A GB9103890D0 (en) 1991-02-25 1991-02-25 Rotary fluid filtration apparatus
PCT/GB1992/000159 WO1992013626A1 (en) 1991-01-30 1992-01-28 Filtering apparatus

Publications (3)

Publication Number Publication Date
GB9315297D0 GB9315297D0 (en) 1993-10-20
GB2267658A true GB2267658A (en) 1993-12-15
GB2267658B GB2267658B (en) 1995-06-07

Family

ID=26298352

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9315297A Expired - Fee Related GB2267658B (en) 1991-01-30 1992-01-28 Filtering apparatus

Country Status (4)

Country Link
GB (1) GB2267658B (en)
IE (1) IE920296A1 (en)
PT (1) PT100066A (en)
WO (1) WO1992013626A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6571959B1 (en) 1999-09-22 2003-06-03 Robin C. Moore Coolant fluid cleaning method and apparatus
US8070963B2 (en) 2007-07-09 2011-12-06 Odis Irrigation Equipment Ltd. Method and system for backwashing a filter
CN117379868A (en) * 2023-12-12 2024-01-12 山西裕英永旭新材料有限责任公司 Filter pressing tank

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2454604A1 (en) * 1974-11-18 1976-05-20 Kito Machine Industry Co Outward flow rotary filter drum - having radially inwardly extending vanes to direct solids to discharge trough
DE2737600A1 (en) * 1977-08-20 1979-03-01 Kloeckner Humboldt Deutz Ag Removal of filter residues from drum filter - using a lattice to create regular shapes in cake, with slot-shaped jet and following suction to clean cloth
EP0331825A1 (en) * 1988-03-07 1989-09-13 Mei Tai Co., Ltd. Filter band cleaning device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3392839A (en) * 1965-09-27 1968-07-16 Andale Co Multiple element strainer sandwich
SE315490B (en) * 1968-04-03 1969-09-29 H Nilsson
US3972817A (en) * 1972-12-08 1976-08-03 Myrens Verksted A/S Filter, especially for back water
US3941702A (en) * 1974-11-14 1976-03-02 Kito Machine Industries Company Limited Rotary strainer
US4200530A (en) * 1977-05-20 1980-04-29 Emmanuel Mechalas Rotary filter
LU79466A1 (en) * 1978-04-18 1979-05-25 Sidmar Nv PROCESS AND PLANT FOR TREATMENT AND HANDLING OF METALLURGIC DAIRY
US4724077A (en) * 1986-06-09 1988-02-09 Tadao Uchiyama Rotary drum filter with sliding perforated buckets

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2454604A1 (en) * 1974-11-18 1976-05-20 Kito Machine Industry Co Outward flow rotary filter drum - having radially inwardly extending vanes to direct solids to discharge trough
DE2737600A1 (en) * 1977-08-20 1979-03-01 Kloeckner Humboldt Deutz Ag Removal of filter residues from drum filter - using a lattice to create regular shapes in cake, with slot-shaped jet and following suction to clean cloth
EP0331825A1 (en) * 1988-03-07 1989-09-13 Mei Tai Co., Ltd. Filter band cleaning device

Also Published As

Publication number Publication date
PT100066A (en) 1994-03-31
GB2267658B (en) 1995-06-07
GB9315297D0 (en) 1993-10-20
WO1992013626A1 (en) 1992-08-20
IE920296A1 (en) 1992-07-29

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19990128