Method for cleaning of filter device

Details Method for cleaning of filter device Method for cleaning of filter device

1977-01-25

1978-07-25

Cuchlinski, Jr., William A.

Liquid purification or separation

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

Responsive to fluid flow

210 82, 210275, 210290, B01D 2324

Patent

active

041027868

ABSTRACT:
Disclosed herein is a method for cleaning a filter device packed with a bed of filtering grains, which cleaning is effected whenever the pressure loss in the filter device has increased to a prescribed level by first discharging the filtering grains through the upper side of the device in conjunction with a current of water, then circulating the filtering grains back into the device via the lower side thereof and giving the freshly formed bed of filtering grains a backwashing with water.

REFERENCES:
patent: 3550774 (1970-12-01), Hirs et al.
patent: 3695433 (1972-10-01), Hirs et al.
patent: 3814245 (1974-06-01), Hirs
patent: 3814247 (1974-06-01), Hirs
patent: 3900395 (1975-08-01), Hirs
patent: 3932278 (1976-01-01), Meidl et al.
patent: 3953333 (1976-04-01), Hirs
patent: 4048068 (1977-09-01), Hirs

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