GB1316461A - Automatic filter control - Google Patents

Automatic filter control

Info

Publication number
GB1316461A
GB1316461A GB2375270A GB2375270A GB1316461A GB 1316461 A GB1316461 A GB 1316461A GB 2375270 A GB2375270 A GB 2375270A GB 2375270 A GB2375270 A GB 2375270A GB 1316461 A GB1316461 A GB 1316461A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
valve
backwashing
filter
automatically
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
GB2375270A
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.)
Aquamatic Inc
Original Assignee
Aquamatic 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 Aquamatic Inc filed Critical Aquamatic Inc
Publication of GB1316461A publication Critical patent/GB1316461A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D37/00—Processes of filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D37/00—Processes of filtration
    • B01D37/04—Controlling the filtration

Abstract

1316461 Automatically backwashing filters AQUAMATIC Inc 15 May 1970 [15 May 1969] 23752/70 Heading B1D [Also in Divisions F2 and G3] Filter apparatus for cleansing liquids, e.g. from a swimming pool 10, and which enables backwashing to be automatically carried out for a predetermined time interval by reversing the flow of pool water comprises a multipart valve 15 movable between filtering and backwashing positions by positioning apparatus itself automatically controlled by a spring biassed diaphragm valve 30 which responds to the pressure differential across the filter in tank 20. The timing apparatus comprises a flow control constriction in conduit 44 which fixes the time at which the bias on the diaphragm is overcome. In Fig. 1, the positioning apparatus is an electric motor M, switches S1-S3 and circuitry whereas in Figs. 4, 5, 6 (not shown) the valve 15 is pneuamtically operated by a diaphragm attached to the upper end of its stem and located in a housing, the chambers so formed on either side of the diaphragm being alternately connectable to a pressure pump and drain by means of a two way switch valve under the control of the diaphragm valve 30.
GB2375270A 1969-05-15 1970-05-15 Automatic filter control Expired GB1316461A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US82487369A 1969-05-15 1969-05-15

Publications (1)

Publication Number Publication Date
GB1316461A true GB1316461A (en) 1973-05-09

Family

ID=25242530

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2375270A Expired GB1316461A (en) 1969-05-15 1970-05-15 Automatic filter control

Country Status (5)

Country Link
US (1) US3616915A (en)
CA (1) CA941317A (en)
DE (2) DE2023302A1 (en)
FR (1) FR2047803A5 (en)
GB (1) GB1316461A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102000453A (en) * 2010-10-15 2011-04-06 陕西富锐泳池环境科技有限公司 Kieselguhr filter for water treatment

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2019691A1 (en) * 1970-04-23 1972-01-20 Cillichemie Filter and backwash device for swimming pools
US3948773A (en) * 1974-06-13 1976-04-06 Alfred Denholm Tucker Automatic control for filtering equipment under pressure
US4411779A (en) * 1978-04-24 1983-10-25 Mcconnell Iii Frank G Fluid treatment system
US4676914A (en) * 1983-03-18 1987-06-30 North Coast Systems, Inc. Microprocessor based pump controller for backwashable filter
US5723043A (en) * 1996-06-13 1998-03-03 Hawk; William D. Filtering apparatus having positively buoyant and negatively buoyant particulate
US5932092A (en) * 1996-06-13 1999-08-03 Hawk; William D. Filtering apparatus having positively buoyant and negatively buoyant particulate
US6238556B1 (en) 1999-10-01 2001-05-29 Fluid Art Technologies, Llc Filtration system including a back washable pre-filtration apparatus
US6407469B1 (en) 1999-11-30 2002-06-18 Balboa Instruments, Inc. Controller system for pool and/or spa
US6958118B2 (en) * 2002-08-27 2005-10-25 Maax, Inc. Self-cleaning water filtration system and method
US7030343B2 (en) * 2002-10-03 2006-04-18 Balboa Instruments, Inc. Controller system for bathing installation
US20050087495A1 (en) * 2003-10-22 2005-04-28 Parke Geary G. Adsorption system
US10385578B2 (en) 2017-12-04 2019-08-20 Montasser M. Elsawi Polyvinyl chloride conduit for backwashing pool filters

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US582399A (en) * 1897-05-11 Water-filter
US2858024A (en) * 1955-01-20 1958-10-28 Foxboro Co Liquid filter backwash condition measurement
US3202170A (en) * 1962-11-28 1965-08-24 Edward L Holbrook Valve assembly of interchangeable parts
FR1363896A (en) * 1962-12-21 1964-06-19 Electro Chimie Soc D Variable setpoint scale
US3237640A (en) * 1963-09-23 1966-03-01 Aquamatic Inc Flow control apparatus
US3360907A (en) * 1963-10-17 1968-01-02 Southwest Res Inst Apparatus for cleaning filters
US3465782A (en) * 1964-09-23 1969-09-09 American Standard Inc Float actuated rotary valve
US3465881A (en) * 1967-06-27 1969-09-09 Gerald H Rogers Control mechanism for water softening systems
US3512644A (en) * 1967-06-28 1970-05-19 Jacuzzi Bros Inc Automatic filter backwash assembly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102000453A (en) * 2010-10-15 2011-04-06 陕西富锐泳池环境科技有限公司 Kieselguhr filter for water treatment

Also Published As

Publication number Publication date
FR2047803A5 (en) 1971-03-12
DE7017829U (en) 1973-08-30
CA941317A (en) 1974-02-05
DE2023302A1 (en) 1970-11-19
US3616915A (en) 1971-11-02

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees