Filter apparatus having filter bed back-washing means

Details Filter apparatus having filter bed back-washing means Filter apparatus having filter bed back-washing means

1982-09-13

1984-12-04

Spear, Frank

Liquid purification or separation

Particulate material type separator, e.g., ion exchange or...

With rehabilitation means

210793, B01D 2324

Patent

active

044863071

ABSTRACT:
Filter apparatus embodying a filter bed back-washing unit comprising a raisable and lowerable suction bell, the side walls of which define division walls to compart the respective partial volume of the filter bed to be cleaned. The side walls of the suction bell are of a height at least equal to the height of the filter bed, and the suction bell is raisable and lowerable by a stroke length which corresponds at least approximately to this height.

REFERENCES:
patent: 1718767 (1929-06-01), Wade
patent: 2302449 (1942-11-01), Laughan
patent: 3984326 (1976-10-01), Bendel
patent: 4377485 (1983-03-01), Krofta

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