Liquid purification or separation – Flow – fluid pressure or material level – responsive – Filter cleaning
Patent
1992-07-06
1995-03-28
Lithgow, Thomas M.
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Filter cleaning
210111, 210408, 210411, 210413, 210415, 209273, 209306, B01D 2964, B01D 2968, B01D 2935
Patent
active
054013968
ABSTRACT:
A self-cleaning stationary basket strainer has a housing with an inlet adjacent the top and an outlet adjacent the bottom, with a stationary strainer basket contained therein spaced from the wall of the housing. A flush discharge opening and a backwash discharge opening and provided in the closed bottom of the housing. A hollow backwash conduit is provided adjacent the inner surface of the strainer basket, adapted to move about the inner periphery thereof, and has a passage in the wall thereof communicating with a chamber in the conduit. A discharge section on the hollow backwash conduit communicates with the backwash discharge opening in the housing, the backwash discharge opening sealable when not in use. A scraper blade and extension member are provided on the hollow backwash conduit forming a channel which communicates with the passage. A rotatable brush may also be used which moves about the inner periphery of the strainer basket and brushes the inner surface of the strainer basket.
REFERENCES:
patent: 2275958 (1942-03-01), Hagel
patent: 3574509 (1971-04-01), Zentis
patent: 4315820 (1982-02-01), Mann
patent: 4643828 (1987-02-01), Barzuza
patent: 4818402 (1989-04-01), Steiner
patent: 4842722 (1989-06-01), Holz
patent: 5152891 (1992-10-01), Netkowicz
patent: 5183568 (1993-02-01), Lescovich
Patent Abstracts of Japan vol. 8 No. 180 (M-318) [1617] Aug. 18, 1984 and JP-A-59 071 999 Abstract.
Huggins Warren L.
Lescovich Joseph E.
GA Industries Inc.
Lithgow Thomas M.
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