Fluid filtering unit with movable collector for cleaning

Details Fluid filtering unit with movable collector for cleaning Fluid filtering unit with movable collector for cleaning

1995-01-25

1996-09-24

Drodge, Joseph W.

Liquid purification or separation

Flow, fluid pressure or material level, responsive

Filter cleaning

210143, 210414, 55294, 55302, B01D 2438, B01D 2446

Patent

active

055587615

ABSTRACT:
The fluid filtering unit comprises a filter element through which fluid being filtered must pass and a device for cleaning the filter element in situ without interruption of the filtering process. The cleaning device comprises a collector movable between a first position and a second position relative to the filter element on the upstream side of the filter element during a cleaning operation, a device for urging the collector at least in use towards its first position relative to the filter element, an arrangement for moving the collector from its first position to its second position relative to the filter element against the force of the urging device, and a valve arrangement for automatically connecting the collector to dump at a pressure less than that of the fluid being filtered as the collector moves from its first position relative to the filter element towards its second position relative to the filter element.

REFERENCES:
patent: 3994810 (1976-11-01), Schaeffer
patent: 4042504 (1977-08-01), Drori
patent: 4278540 (1981-07-01), Drori
patent: 4295963 (1981-10-01), Drori
patent: 4299707 (1981-11-01), Neuman
patent: 4532036 (1985-07-01), Clifford
patent: 4549961 (1985-10-01), Bellemann et al.
patent: 4632757 (1986-12-01), Rosenberg
patent: 4755290 (1988-07-01), Neuman et al.

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