Filtering method and filter chamber sealing arrangement

Details Filtering method and filter chamber sealing arrangement Filtering method and filter chamber sealing arrangement

2005-01-25

2005-01-25

Popovics, Robert James (Department: 1724)

Liquid purification or separation

Processes

Including controlling process in response to a sensed condition

C210S743000, C210S783000, C210S387000, C210S398000, C210S400000, C210S406000

Reexamination Certificate

active

06846421

ABSTRACT:
A liquid filter method includes use of a filter media belt enclosed by sealably mated cover pan and floor pan defining a vacuum chamber connected to a sealed clean liquid tank, with clean liquid pumped out continuously to draw liquid to be filtered into an upper region of the filter chamber via an inlet hose connected to a source of liquid to be filtered. The cover pan is lifted after the vacuum is relieved to allow indexing of the filter media belt. A main control valve to the clean liquid tank is closed and pumping liquid continues during indexing. A vacuum control device limits the maximum vacuum developed in the clean liquid tank and a vacuum pump removes air from the tank for priming and to eliminate excess accumulated air. A hose seal for the cover is mounted to the filter belt to be moved in and out by the belt movement, allowing cleaning of the seal. A double loop hose seal creates an intervening space into which liquid is directed to minimize air leaks.

REFERENCES:
patent: 4664813 (1987-05-01), Schneider
patent: 6495031 (2002-12-01), Bratten
patent: 20030121843 (2003-07-01), Bratten

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