Filters

Details Filters Filters

1975-12-19

1977-11-29

Wyse, Thomas G.

Liquid purification or separation

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

Responsive to fluid flow

210189, 210268, 210279, 210285, B01D 2316

Patent

active

040604845

ABSTRACT:
A method of filtering a liquid comprising the steps of providing a bed of particulate material, withdrawing material from the base of the bed, supplying replacement particulate material to the bed in such a manner that the bed has a free inclined upper surface, and causing the liquid to be filtered to flow through the bed by entering the same through said inclined upper suface, and apparatus for carrying out such method. Preferably the particulate material is comprised by particles of various sizes whereby a classifying action takes place to give a structured filter bed.

REFERENCES:
patent: 1007929 (1911-11-01), Deacon et al.
patent: 1123704 (1915-01-01), Deacon et al.
patent: 1620431 (1927-03-01), Bramwell
patent: 1861295 (1932-05-01), Bramwell
patent: 2057887 (1936-10-01), Elliot et al.
patent: 3715868 (1973-02-01), Biasi

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