Liquid purification or separation – Flow – fluid pressure or material level – responsive – Discharge of treated material
Patent
1978-06-06
1979-03-20
Cuchlinski, Jr., William A.
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Discharge of treated material
210127, 210401, B01D 3304
Patent
active
041452887
ABSTRACT:
A filter apparatus wherein filter media is submerged in liquid being filtered and suction is employed under the media to increase the flow through it. The filter media in elongated strip form is supported on an incline for movement in one direction by an endless pervious conveyor. A receiving tank for dirty liquid is above the conveyor and media with a lower tank for clean liquid below the conveyor with the sides and ends of the lower tank being constantly sealed in order to maintain reduced pressure therein to enhance flow through the media. Filtered liquid is supplied at the sides of the conveyor and at an end wall of the receiving tank to prevent any migration of dirty liquid into the lower tank at the periphery of the lower tank. Advancement of the filter media is controlled automatically in response to variations in the pressure differential on opposite sides of the media which varies in proportion to the dirt load of the media. Pre-coating of the media as it enters the receiving tank is accomplished by a structure in the tank providing a transverse blinded area on the conveyor. Drying, dewatering and/or compressing of the filter cake on media emerging from the dirty liquid tank is accomplished and the conveyor and media are advanced automatically.
REFERENCES:
patent: 3083831 (1963-04-01), Fowler
patent: 3091336 (1963-05-01), Hirs
patent: 3121681 (1964-02-01), Baxter
patent: 3506128 (1970-04-01), Pashaian et al.
patent: 3939077 (1976-02-01), Seibert
patent: 4037338 (1977-07-01), Berline
Cuchlinski Jr. William A.
J. R. Schneider Company
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