Liquid purification or separation – Filter – Movable medium
Patent
1993-04-07
1994-11-29
Hruskoci, Peter A.
Liquid purification or separation
Filter
Movable medium
210400, 210401, 210406, 100118, 100211, B01D 33048
Patent
active
053687329
ABSTRACT:
In order to wash the lower run of a horizontal belt filter more effectively, and simultaneously provide for tensioning of the lower run, as required when progressing the belt intermittently, a dead weight roller is supported in a bight of the lower run of the filter belt and reciprocates up and down in a wash liquor vessel as a drive roller is alternately extended, so as to advance the upper run of the belt, and retracted. A one way device is located upstream of the dead weight roller to prevent backward movement of lower run. As the bight decreases and increases, rolling action of the dead weight roller rubs the belt and forces wash liquor therethrough. A plurality of dead weight rollers in one or more wash liquor vessels may be provided and they may be guided at their ends in vertical or oblique guide tracks.
REFERENCES:
patent: 3459122 (1969-08-01), Pastoors et al.
patent: 4377479 (1983-03-01), Pierson
patent: 4446023 (1984-05-01), Pierson
patent: 4495070 (1985-01-01), Pierson
patent: 5019258 (1991-05-01), Pierson
D & C Limited
Hruskoci Peter A.
Popovics Robert James
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