Method and device for unclogging filter cloths

Details Method and device for unclogging filter cloths Method and device for unclogging filter cloths

1973-11-19

1976-09-28

Spear, Jr., Frank A.

Liquid purification or separation

Filter

Medium, cleaner or agitator moved by fluid

210391, B01D 3520

Patent

active

039830365

ABSTRACT:
A method and device for unclogging filter cloths for use in filter apparatus particularly apparatus of the kind wherein the cloth describes a closed loop between a filtering station and an unclogging station.
Gas is ejected from one or more nozzles through the cloth which is vibrated at a sonic and/or ultrasonic frequency at a location opposite the nozzle ejection head. The cloth is simultaneously stretched at the same location into a projecting shape having leading and trailing edges with a length, in the direction of motion of the cloth, of not more than three times their height in the direction perpendicular to the direction of motion of the cloth.

REFERENCES:
patent: 1791251 (1931-02-01), Shimmin
patent: 3096279 (1963-07-01), Komline
patent: 3144409 (1964-08-01), Jauhola
patent: 3707230 (1972-12-01), Davidson
patent: 3814259 (1974-06-01), Kamimura et al.
patent: 3836681 (1974-09-01), Dudd

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