Control system for pump cycling

Details Control system for pump cycling Control system for pump cycling

1988-01-07

1990-04-24

Fisher, Richard V.

Liquid purification or separation

Flow, fluid pressure or material level, responsive

Diverse sensing means

210106, 2103232, 210332, 210346, 210351, 210388, 210486, 55418, 55484, B01D 2928, B01D 2932

Patent

active

049198017

ABSTRACT:
A filter unit using a bump-type filter is disclosed. Briefly stated, a chamber has a fluid inlet conduit so that contaminated fluid, upon entering the chamber, is directed upwardly towards filter tubes and downwardly towards the bottom of the chamber. The fluid flow is diverted during startup so as to be directed only downward. A bump handle is disposed between two fluid outlet conduits such that one is opened and the other is closed and the reverse when the bump handle is in a first or second corresponding position. A plurality of microswitches are utilized so that the pump is not enabled during bumping or when a dump valve is open, but is enabled during system operation or startup.

REFERENCES:
patent: 3796316 (1974-03-01), Matz
patent: 4094784 (1978-06-01), Hirana
patent: 4289630 (1981-09-01), Schmidt, Jr. et al.
patent: 4517086 (1985-05-01), Romey et al.
patent: 4526688 (1985-07-01), Schmidt, Jr. et al.

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