Fractional filtration method and fractional filtration apparatus

Details Fractional filtration method and fractional filtration apparatus Fractional filtration method and fractional filtration apparatus

1995-03-03

1997-02-18

Popovics, Robert J.

Liquid purification or separation

Processes

Separating

210791, 210803, 210805, 210168, 210171, 210172, 210196, 210326, 21033301, 210391, 210402, 210409, 2104165, 210526, B01D 3306

Patent

active

056038461

ABSTRACT:
A fractional filtration apparatus, used for obtaining cutting oils fractionally cleaned by using one filtration apparatus so as to reuse the separated cutting oils in accordance with the types of machining operations, includes a plurality of liquid tanks for fractionally storing the cleaned cutting oils, a filtration target cutting oil storage tank for temporarily storing a filtration target cutting oil charged through a charge port, rotatably driven filtration drums, dividing the liquid level of the cutting oil and being pivotal in the filtration target cutting oil storage tank, each drum having a side-surface opening in at least one surface thereof in order to let a filtered cleaned cutting oil flow into the cutting oil tanks, and each drum being provided with filters of different mesh sizes, injection nozzles for reversely washing the filters provided on the outer circumferential surfaces of the filtration drums, and dip-up members, disposed at a predetermined intervals, for continuously conveying the cuttings from an upstream side of the discharge port to a downstream side and causing the cuttings to drop through a cuttings discharge port.

REFERENCES:
patent: 1627550 (1927-05-01), Bachmann
patent: 1904066 (1933-04-01), McArthur
patent: 2267086 (1941-12-01), Donohue
patent: 2969880 (1961-01-01), Ludholm et al.
patent: 4655940 (1987-04-01), Harms
patent: 4724077 (1988-02-01), Uchiyama
patent: 4895647 (1990-01-01), Uchiyama
patent: 4992167 (1991-02-01), Uchiyama
patent: 5167839 (1992-12-01), Widmer, II et al.
patent: 5230793 (1993-07-01), Lenhart et al.

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