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GB991875A - Improvements in strainers for the removal of extraneous matter from relatively largeflows of liquid - Google Patents

Improvements in strainers for the removal of extraneous matter from relatively largeflows of liquid

Info

Publication number
GB991875A
GB991875A GB19158/60A GB1915860A GB991875A GB 991875 A GB991875 A GB 991875A GB 19158/60 A GB19158/60 A GB 19158/60A GB 1915860 A GB1915860 A GB 1915860A GB 991875 A GB991875 A GB 991875A
Authority
GB
United Kingdom
Prior art keywords
screen
outlet
casing
extraneous matter
removal
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
GB19158/60A
Inventor
John Wilson Powell
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.)
Lancaster & Tongue Ltd
Original Assignee
Lancaster & Tongue 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
Application filed by Lancaster & Tongue Ltd filed Critical Lancaster & Tongue Ltd
Priority to GB19158/60A priority Critical patent/GB991875A/en
Publication of GB991875A publication Critical patent/GB991875A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B01D29/11—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 bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/13—Supported filter elements
    • B01D29/15—Supported filter elements arranged for inward flow filtration
    • 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
    • B01D29/62—Regenerating the filter material in the filter
    • B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
    • B01D29/68—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
    • B01D29/682—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles with a rotary movement with respect to the filtering element
    • 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
    • B01D29/62—Regenerating the filter material in the filter
    • B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
    • B01D29/68—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
    • B01D29/688—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles with backwash arms or shoes acting on the cake side
    • 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
    • B01D29/62—Regenerating the filter material in the filter
    • B01D29/70—Regenerating the filter material in the filter by forces created by movement of the filter element

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtration Of Liquid (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

991,875. Filters for liquids. LANCASTER & TONGE Ltd. May 23, 1961 [May 31, 1960], No. 19158/60. Heading B1D. A strainer for removing extraneous matter from water comprises an outer casing A having an inlet a and outlet a 1 , and a normally stationary, perforate cylindrical screen B carried on a vertical shaft and capable of rotation within the casing, the water passing through the interstices of the screen and then over the top of the screen to the outlet. A second outlet D from the casing is connected to a nozzle C which extends the whole length of, and around part of the circumference of, the screen, and means, e.g. manually operated spur gearing F, Fig. 1 (not shown), are provided for rotating the screen, and a closure valve (not shown) is fitted on the outlet D to open it to atmosphere, when it is required to backflush the extraneous matter from the screen surface by a passage of water through the screen from the inside and out through the nozzle due to a drop in pressure therebetween, in conjunction with a scraper E to loosen the extraneous matter from the surface of the screen. A drain plug a5, Fig. 1 (not shown) may be provided for the removal of any solid matter which may pass through the screen and settle at the bottom of the casing. In a modification, Fig. 4, the spur gearing is replaced by a motor-operated speed-reduction gear which, together with the valve on the outlet D, is operated and controlled by the difference in pressure between the outlet a 1 and the inlet a.
GB19158/60A 1963-05-31 1963-05-31 Improvements in strainers for the removal of extraneous matter from relatively largeflows of liquid Expired GB991875A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB19158/60A GB991875A (en) 1963-05-31 1963-05-31 Improvements in strainers for the removal of extraneous matter from relatively largeflows of liquid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB19158/60A GB991875A (en) 1963-05-31 1963-05-31 Improvements in strainers for the removal of extraneous matter from relatively largeflows of liquid

Publications (1)

Publication Number Publication Date
GB991875A true GB991875A (en) 1965-05-12

Family

ID=10124728

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19158/60A Expired GB991875A (en) 1963-05-31 1963-05-31 Improvements in strainers for the removal of extraneous matter from relatively largeflows of liquid

Country Status (1)

Country Link
GB (1) GB991875A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2000449A (en) * 1977-07-01 1979-01-10 Beaudrey & Cie Screens for water intakes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2000449A (en) * 1977-07-01 1979-01-10 Beaudrey & Cie Screens for water intakes
GB2000449B (en) * 1977-07-01 1982-05-26 Beaudrey & Cie Screens for water intakes

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