Automatic filter cleaning device by ultrasound generator modulat

Details Automatic filter cleaning device by ultrasound generator modulat Automatic filter cleaning device by ultrasound generator modulat

1990-07-05

1992-04-07

Dawson, Robert A.

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Fluid pressure responsive

210106, 210134, 210143, 210254, 210259, 210407, 210483, B01D 3604, B01D 35143

Patent

active

051025345

ABSTRACT:
Automatic filter cleaning device for liquid circuits, including at least one filter in the passage of the liquid. The device includes a filter situated above a decanting tank for impurities so that its upstream wall is turned towards the tank, while an ultrasound generator is provided to generate ultrasounds in the decanting tank and is connected by a modulator to a projection of a sidewall of the tank. Advantageously, a liquid circuit branch conduit with a branch circuit control valve is provided in order to short-circuit, at least in part, the filtration assembly comprised of the filter and the tank.

REFERENCES:
patent: 2688402 (1954-09-01), Butterworth
patent: 3630377 (1971-12-01), Brooks
patent: 3713540 (1973-01-01), Davidson et al.
patent: 3777888 (1973-12-01), Zellback et al.
patent: 3839185 (1974-10-01), Vicard
patent: 3870640 (1975-03-01), Reece
patent: 4112768 (1978-09-01), Holland et al.
patent: 4248710 (1981-02-01), Rampignon
patent: 4279751 (1981-07-01), Fishgal
International PCT Publication WO79/00884, "Regeneration Process of a Filtering Apparatus and Device for Implementing Such Process", 1 Nov. 1989, Potiron et al.

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