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FR2374936A1 - Filtering element for prefiltering or precoat filtration - made of a helicoidal spring with excellent cleaning by pressure shocks - Google Patents

Filtering element for prefiltering or precoat filtration - made of a helicoidal spring with excellent cleaning by pressure shocks

Info

Publication number
FR2374936A1
FR2374936A1 FR7638524A FR7638524A FR2374936A1 FR 2374936 A1 FR2374936 A1 FR 2374936A1 FR 7638524 A FR7638524 A FR 7638524A FR 7638524 A FR7638524 A FR 7638524A FR 2374936 A1 FR2374936 A1 FR 2374936A1
Authority
FR
France
Prior art keywords
prefiltering
filtering element
filtration
excellent cleaning
pressure shocks
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.)
Withdrawn
Application number
FR7638524A
Other languages
French (fr)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7638524A priority Critical patent/FR2374936A1/en
Publication of FR2374936A1 publication Critical patent/FR2374936A1/en
Withdrawn legal-status Critical Current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
    • B01D37/02—Precoating the filter medium; Addition of filter aids to the liquid being filtered
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/44—Edge filtering elements, i.e. using contiguous impervious surfaces
    • B01D29/48—Edge filtering elements, i.e. using contiguous impervious surfaces of spirally or helically wound bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
    • B01D29/52—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in parallel connection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/04—Supports for the filtering elements
    • B01D2201/043—Filter tubes connected to plates
    • B01D2201/0446—Filter tubes connected to plates suspended from plates at the upper side of the filter elements

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

The axis of the spring is vertical, the tube formed by the spring fitting at the top into a plate and being plugged at the bottom. A suitable frame can be incorporated if it is to be used in a fluid with a turbulent flow. The filter can be cleaned by a shock wave from a counter-current flow, produced by the controlled expansion of a pocket of air trapped above the filtration liq. A cheap pre-filtration appts. is used. The cleaning is 100% effective and allows the automatic use of the filter for 24 hrs. a day for several months without stopping it.
FR7638524A 1976-12-21 1976-12-21 Filtering element for prefiltering or precoat filtration - made of a helicoidal spring with excellent cleaning by pressure shocks Withdrawn FR2374936A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7638524A FR2374936A1 (en) 1976-12-21 1976-12-21 Filtering element for prefiltering or precoat filtration - made of a helicoidal spring with excellent cleaning by pressure shocks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7638524A FR2374936A1 (en) 1976-12-21 1976-12-21 Filtering element for prefiltering or precoat filtration - made of a helicoidal spring with excellent cleaning by pressure shocks

Publications (1)

Publication Number Publication Date
FR2374936A1 true FR2374936A1 (en) 1978-07-21

Family

ID=9181336

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7638524A Withdrawn FR2374936A1 (en) 1976-12-21 1976-12-21 Filtering element for prefiltering or precoat filtration - made of a helicoidal spring with excellent cleaning by pressure shocks

Country Status (1)

Country Link
FR (1) FR2374936A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6051138A (en) * 1998-05-05 2000-04-18 Hobson, Jr.; Russell B. Slack filter tube with tensioning means
US6309552B1 (en) 1998-05-05 2001-10-30 Russell B. Hobson, Jr. Slack filter tube having an internal resilient support extending there through

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2041048A (en) * 1933-07-31 1936-05-19 Marine Chemicals Company Ltd Filter apparatus and method
GB598139A (en) * 1945-08-31 1948-02-11 Harry Akeroyd Improvements in or relating to filters particularly for filtering polluted liquids or fluids
US2468603A (en) * 1945-10-22 1949-04-26 Infilco Inc Filter
US2475561A (en) * 1949-07-05 Filter strainer
US2780363A (en) * 1952-12-22 1957-02-05 Infilco Inc Apparatus and process for washing diatomite type filters

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2475561A (en) * 1949-07-05 Filter strainer
US2041048A (en) * 1933-07-31 1936-05-19 Marine Chemicals Company Ltd Filter apparatus and method
GB598139A (en) * 1945-08-31 1948-02-11 Harry Akeroyd Improvements in or relating to filters particularly for filtering polluted liquids or fluids
US2468603A (en) * 1945-10-22 1949-04-26 Infilco Inc Filter
US2780363A (en) * 1952-12-22 1957-02-05 Infilco Inc Apparatus and process for washing diatomite type filters

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6051138A (en) * 1998-05-05 2000-04-18 Hobson, Jr.; Russell B. Slack filter tube with tensioning means
US6309552B1 (en) 1998-05-05 2001-10-30 Russell B. Hobson, Jr. Slack filter tube having an internal resilient support extending there through

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Legal Events

Date Code Title Description
ST Notification of lapse