Relieving pressure differential in vacuum filter

Details Relieving pressure differential in vacuum filter Relieving pressure differential in vacuum filter

1984-12-31

1986-02-18

Therkorn, Ernest G.

Liquid purification or separation

Processes

Separating

210741, 210106, 210111, 210117, 210136, 210167, 210196, 210387, 210406, 2104161, 1375133, B01D 2936, B01D 2942

Patent

active

045713022

ABSTRACT:
A filter system and method are provided utilizing a filter tank separated into an inlet compartment and a filtrate compartment by a filter media. Under normal filter operation, the liquid to be filtered enters the inlet compartment, is passed through the filter media and out the filtrate compartment by a pressure differential created across the filter media by a pump device. When the need arises to move the filter media as a result of the buildup of contaminents on it, it is necessary to alleviate the pressure differential across the filter media. Such pressure differential is alleviated by the controlled flowing of filtered liquid through an orifice in a closed valve into the filtrate compartment.

REFERENCES:
patent: 3215273 (1965-11-01), Kryzer
patent: 3244396 (1966-04-01), Miller
patent: 3618772 (1971-11-01), Dietrick
patent: 3912630 (1975-10-01), Reighard
patent: 4233157 (1980-11-01), Miller
patent: 4267060 (1981-05-01), Miller
patent: 4396505 (1983-08-01), Willson

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