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GB123152A - Improvements in or relating to Filters. - Google Patents

Improvements in or relating to Filters.

Info

Publication number
GB123152A
GB123152A GB2524/18A GB252418A GB123152A GB 123152 A GB123152 A GB 123152A GB 2524/18 A GB2524/18 A GB 2524/18A GB 252418 A GB252418 A GB 252418A GB 123152 A GB123152 A GB 123152A
Authority
GB
United Kingdom
Prior art keywords
water
nozzles
air
pipe
pockets
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
GB2524/18A
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.)
PULSOMETER ENG CO
Original Assignee
PULSOMETER ENG 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 PULSOMETER ENG CO filed Critical PULSOMETER ENG CO
Priority to GB2524/18A priority Critical patent/GB123152A/en
Publication of GB123152A publication Critical patent/GB123152A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/46—Regenerating the filtering material in the filter
    • B01D24/4631—Counter-current flushing, e.g. by air
    • B01D24/4636—Counter-current flushing, e.g. by air with backwash shoes; with nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/02—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration
    • B01D24/10—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration the filtering material being held in a closed container
    • B01D24/16—Upward filtration
    • B01D24/165—Upward filtration the filtering material being supported by pervious surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/08—Regeneration of the filter
    • B01D2201/087—Regeneration of the filter using gas bubbles, e.g. air

Landscapes

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

Abstract

123,152. Pulsometer Engineering Co., and Bj÷rnstad, J. Feh. 12, 1918. Filters with loose filtering- materials.-Water and air for cleansing a filter bed are admitted to the bed by two sets of nozzles at different levels, the inlet to the air-nozzles being at a higher level than that to the water nozzles, so that the air and water do not interfere with each other. The water-nozzles 4 are arranged at the bottoms of pockets 2 in the bottom plate of the filter, and the air nozzles 5 in the spaces between the pockets. The air enters through a central pipe 9 and passes between the pockets 2 to the nozzles 5, finally escaping through a valve 15. The water enters from the filtered-water main by the pipe 8, and after passing through the nozzles 4 and the filter bed, escapes by an overflow-box 11 and pipe 13, which also serve to supply water to be filtered. The pressures of the air and water are so adjusted that the air can depress the water below the level of the nozzles 5 but cannot reach the nozzles 4. To prevent an excessive pressure of water a lift valve, the motion of which is regulated by an adjustable stop, is placed in the pipe 8, so that water leaving the filter passes freely, but flow in the opposite direction is obstructed, but not prevented.
GB2524/18A 1918-02-12 1918-02-12 Improvements in or relating to Filters. Expired GB123152A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2524/18A GB123152A (en) 1918-02-12 1918-02-12 Improvements in or relating to Filters.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2524/18A GB123152A (en) 1918-02-12 1918-02-12 Improvements in or relating to Filters.

Publications (1)

Publication Number Publication Date
GB123152A true GB123152A (en) 1919-02-12

Family

ID=32669969

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2524/18A Expired GB123152A (en) 1918-02-12 1918-02-12 Improvements in or relating to Filters.

Country Status (1)

Country Link
GB (1) GB123152A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE767013C (en) * 1937-03-17 1951-07-26 Aquapura Wasserreinigungsbau P Liquid filter
US4198301A (en) * 1978-05-19 1980-04-15 Ishigaki Kiko Co., Ltd. Filter apparatus using floating filter medium
US5019259A (en) * 1989-06-15 1991-05-28 Hambley John B Filter underdrain apparatus with partitioned distributor conduits
US5332497A (en) * 1991-10-25 1994-07-26 Baker Hughes Incorporated Nozzleless underdrain for granular filtration system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE767013C (en) * 1937-03-17 1951-07-26 Aquapura Wasserreinigungsbau P Liquid filter
US4198301A (en) * 1978-05-19 1980-04-15 Ishigaki Kiko Co., Ltd. Filter apparatus using floating filter medium
US5019259A (en) * 1989-06-15 1991-05-28 Hambley John B Filter underdrain apparatus with partitioned distributor conduits
US5332497A (en) * 1991-10-25 1994-07-26 Baker Hughes Incorporated Nozzleless underdrain for granular filtration system
US5865999A (en) * 1991-10-25 1999-02-02 Baker Hughes Incorporated Nozzleless underdrain for granular filtration system

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