GB829975A - Improvements in or relating to screens - Google Patents

Improvements in or relating to screens

Info

Publication number
GB829975A
GB829975A GB39069/57A GB3906957A GB829975A GB 829975 A GB829975 A GB 829975A GB 39069/57 A GB39069/57 A GB 39069/57A GB 3906957 A GB3906957 A GB 3906957A GB 829975 A GB829975 A GB 829975A
Authority
GB
United Kingdom
Prior art keywords
elements
screen
towards
flow
scraper
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
GB39069/57A
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.)
HAROLD SCHADE
Original Assignee
HAROLD SCHADE
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 HAROLD SCHADE filed Critical HAROLD SCHADE
Publication of GB829975A publication Critical patent/GB829975A/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
    • B01D29/114—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 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
    • B01D29/44—Edge filtering elements, i.e. using contiguous impervious surfaces
    • B01D29/46—Edge filtering elements, i.e. using contiguous impervious surfaces of flat, stacked 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
    • B01D29/62—Regenerating the filter material in the filter
    • B01D29/64—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
    • B01D29/6469—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers
    • B01D29/6476—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers 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
    • B01D29/70—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)
  • Centrifugal Separators (AREA)

Abstract

829,975. Filters ; centrifugal separators. SCHADE, H. Dec. 16, 1957 [Dec. 14, 1956], No. 39069 /57. Class 46. [Also in Group XXVIII] A filter comprises a plurality of curved elements 1 assembled such that the gaps between the elements increase from the entry surface towards the back of the filter and the angle between the tangent to the convex surface of the element and the direction of flow 4 towards the screen is greatest at the entry surface and decreases towards the back of the screen. The surface may be cleaned by a scraper 8 or by reverse flow in the direction 10. The elements are preferably formed from an elastic material and grooves made by lapping allow for the flow of filtrate and form the spacing member 2. The elements are preferably clamped at the back and their natural resilience urges them into contact at the screen surface. The elements may be in the form sheet, rod or bar material may be made from annular discs. In the latter case the assembly forms a cage which is also suitable as a cage of a centrifugal separator. The elements may also be assembled to provide a cylindrical filtering surface in which case the scraper is preferably of helical form.
GB39069/57A 1956-12-14 1957-12-16 Improvements in or relating to screens Expired GB829975A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE829975X 1956-12-14

Publications (1)

Publication Number Publication Date
GB829975A true GB829975A (en) 1960-03-09

Family

ID=6748641

Family Applications (1)

Application Number Title Priority Date Filing Date
GB39069/57A Expired GB829975A (en) 1956-12-14 1957-12-16 Improvements in or relating to screens

Country Status (1)

Country Link
GB (1) GB829975A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150021257A1 (en) * 2012-02-27 2015-01-22 Frederick Philip Selwyn Static Filter Screen
US11484818B2 (en) * 2019-02-11 2022-11-01 North Carolina State University Self-cleaning screen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150021257A1 (en) * 2012-02-27 2015-01-22 Frederick Philip Selwyn Static Filter Screen
US9895634B2 (en) * 2012-02-27 2018-02-20 Frederick Philip Selwyn Static filter screen
US11484818B2 (en) * 2019-02-11 2022-11-01 North Carolina State University Self-cleaning screen

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