Self-cleaning strainer

Details Self-cleaning strainer Self-cleaning strainer

1974-05-28

1977-01-18

Hart, Charles N.

Liquid purification or separation

Filter

With residue removing means or agitation of liquid

210413, 241 43, 241 882, B01D 2938

Patent

active

040038378

ABSTRACT:
The invention is directed towards a straining means in a cooling system which has a cooling medium inlet, a cooling medium outlet, a screen located between the inlet and outlet and means operable on the inlet side of the screen for keeping the screen clean and free of foreign objects. When using a cylindrical screen, the means for keeping the screen clean comprises a spiral screw-type member rotatable within the cylindrical screen and having means along at least a portion of its edge for grinding foreign material on the inlet side of the screen into a size small enough to pass through the screen.

REFERENCES:
patent: 722632 (1903-03-01), Rothe
patent: 944241 (1909-12-01), Jordan
patent: 2218119 (1940-10-01), McAllister
patent: 2408741 (1946-10-01), Dodge
patent: 3247970 (1966-04-01), Jellesma
patent: 3640474 (1972-02-01), Niedl
patent: 3741104 (1973-06-01), Kannegiesser
patent: 3802566 (1974-04-01), Hata

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