Liquid purification or separation – Filter – Movable medium
Patent
1980-03-04
1982-03-16
Granger, Theodore A.
Liquid purification or separation
Filter
Movable medium
B01D 3310
Patent
active
043200079
ABSTRACT:
A centrifuge filter has a sieve drum normally rotated about its axis and normally fed internally with a filtrand that is separated when the drum rotates into solids lying on the inner surface of the drum and a filtrate that passes radially outwardly through the drum. A pusher plate is axially displaceable in the drum and has an outer edge closely juxtaposed with the drum's inner surface so that it can scrape solids from the surface. A cylinder is rotationally fixed to the drum and has a cylinder chamber that is axially subdivided by a piston into a front compartment and a rear compartment. This piston is jointly axially displaceable with the pusher plate and is axially biased backward. A liquid is introduced into one compartment to fill it as it rotates so that the liquid will be forced radially outward by centrifugal force and will urge the piston axially forward. This liquid is periodically drained off so that the force it exerts is less than that of the biasing means. In this manner the piston will move back and forth each time the rear compartment is filled and drained.
REFERENCES:
patent: 1382142 (1921-06-01), Sturgeon
patent: 3368684 (1968-02-01), Ruegg
patent: 3409137 (1968-11-01), Schneider
patent: 3415446 (1968-12-01), Weiland
patent: 3463318 (1969-08-01), Lutter
patent: 3585132 (1969-10-01), Ruegg
patent: 3966117 (1976-06-01), Johannes
patent: 4073731 (1978-02-01), Fanta
patent: 4209405 (1980-06-01), Christ
patent: 4217226 (1980-08-01), Kampeon et al.
Hultsch Gunther
Wilkesmann Helmut
Granger Theodore A.
Krauss-Maffei Aktiengesellschaft
Ross Karl F.
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