Liquid purification or separation – Flow – fluid pressure or material level – responsive – Filter cleaning
Patent
1986-08-01
1987-09-15
Castel, Benoit
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Filter cleaning
210138, 210414, 2104331, B01D 3522, B01D 3526
Patent
active
046938150
ABSTRACT:
A self-cleaning filter apparatus including a first filter unit and a second filter unit. Each filter unit includes a housing forming an internal cavity, a liquid agitator means rotatably mounted within the cavity and adapted to be rotated by a rotating means external of the housing. A flat filter element is mounted in supported relation between the housing and a connected housing cap with a filter face openly exposed to said cavity. The housing forms inlet and outlet liquid flow passages for circulating a liquid sample through the cavity around the agitator and into filterable contact with the filter face. The agitator means agitates the liquid sample within the cavity and forces a portion of the liquid sample in a washing action across the filter face. The housing cap forms a liquid filtrate passageway for withdrawing a filtered sample of the liquid sample through filter element. A drive is connected to concurrently drive the agitators of both first filter units. The outlet of the first filter unit is connected to the inlet of the second filter unit to permit liquid sample to be pumped into the inlet of the first filter unit, through the cavity of each said filter unit, and discharged through the outlet of the second filter unit. A hose is respectively connected to each filtrate passageway of the first filter units respectively connected to inlet ports of a three way flow valve. A second conduit is connected to the outlet port of the three way valve. A timer is provided for actuating the three way valve.
REFERENCES:
patent: 3541004 (1970-11-01), Cooper, IV et al.
patent: 3598238 (1971-08-01), Collins, Jr.
patent: 4060483 (1977-11-01), Barzuza
patent: 4112768 (1978-09-01), Holland et al.
patent: 4533471 (1985-08-01), Collins, Jr.
Castel Benoit
Jordan Richard D.
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