GB1232572A - - Google Patents

Info

Publication number
GB1232572A
GB1232572A GB1127767A GB1232572DA GB1232572A GB 1232572 A GB1232572 A GB 1232572A GB 1127767 A GB1127767 A GB 1127767A GB 1232572D A GB1232572D A GB 1232572DA GB 1232572 A GB1232572 A GB 1232572A
Authority
GB
United Kingdom
Prior art keywords
bed
bramwell
water
pool
pump
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
GB1127767A
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 filed Critical
Publication of GB1232572A publication Critical patent/GB1232572A/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
    • B01D24/02—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
    • B01D24/12—Downward filtration, the filtering material being supported by pervious surfaces
    • 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
    • B01D24/38—Feed or discharge devices
    • B01D24/42—Feed or discharge devices for discharging filtrate
    • 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
    • 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
    • B01D24/48—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof integrally combined with devices for controlling the filtration
    • B01D24/4869—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof integrally combined with devices for controlling the filtration by level measuring

Landscapes

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

Abstract

1,232,572. Sand bed filter. F. W. BRAMWELL, T. BRAMWELL and J. B. BRAMWELL. 9 May, 1968, No. 11277/67. Heading B1D. Water is continually drawn from a swimming pool 11, filtered downwards through sand bed 27 and returned to pool 11 by an impeller pump 20 and pipework shown, and periodically the pump is reversed to draw water from the pool and force it upwards through the bed, whereupon non-return valve 15 on the filter inlet side closes automatically and the water level above the bed is raised to carry dirt washed from the bed over the overflow 30 to drain. After backwashing, a ballcock 32 opens to allow fresh water to enter the circuit to make up for that lost.
GB1127767A 1968-05-09 1968-05-09 Expired GB1232572A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1127767 1968-05-09

Publications (1)

Publication Number Publication Date
GB1232572A true GB1232572A (en) 1971-05-19

Family

ID=9983261

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1127767A Expired GB1232572A (en) 1968-05-09 1968-05-09

Country Status (1)

Country Link
GB (1) GB1232572A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4118322A (en) * 1976-05-17 1978-10-03 Hydrotechnic Corporation Filtering apparatus for liquids
FR2592370A1 (en) * 1985-12-30 1987-07-03 Bectra Sa DEVICE FOR PURIFYING WATER.
FR2608938A1 (en) * 1986-12-31 1988-07-01 Aubert Robert DEVICE FOR FILTERING THE WATER OF A OVERFLOW SWIMMING POOL USING A BUFFER BANK PROVIDING A GRAVITY FILTER
GB2210803A (en) * 1987-10-14 1989-06-21 Danco Plastics Ltd Swimming pool filtering arrangement
GB2306122A (en) * 1995-10-10 1997-04-30 Tetra Europ Ltd Filter with variable liquid head

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4118322A (en) * 1976-05-17 1978-10-03 Hydrotechnic Corporation Filtering apparatus for liquids
FR2592370A1 (en) * 1985-12-30 1987-07-03 Bectra Sa DEVICE FOR PURIFYING WATER.
EP0234162A1 (en) * 1985-12-30 1987-09-02 BECTRA S.A. Bureau d'Etude et de Coordination de Travaux d'Assainissement Apparatus for the purification of water
FR2608938A1 (en) * 1986-12-31 1988-07-01 Aubert Robert DEVICE FOR FILTERING THE WATER OF A OVERFLOW SWIMMING POOL USING A BUFFER BANK PROVIDING A GRAVITY FILTER
EP0276621A1 (en) * 1986-12-31 1988-08-03 Aquasud Piscines S.A.R.L. Filter for the overflow of water from a swimming pool having a storage vessel serving as a gravity filter
GB2210803A (en) * 1987-10-14 1989-06-21 Danco Plastics Ltd Swimming pool filtering arrangement
GB2306122A (en) * 1995-10-10 1997-04-30 Tetra Europ Ltd Filter with variable liquid head
GB2306122B (en) * 1995-10-10 1999-07-21 Tetra Europ Ltd A system for reducing head against which air blowers must operate in a filter

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee