Cyclic wave system for unclogging water screens

Details Cyclic wave system for unclogging water screens Cyclic wave system for unclogging water screens

1980-03-10

1982-06-29

Castel, Benoit

Liquid purification or separation

Processes

Separating

210748, 210413, 210415, B07B 154, B01D 3520

Patent

active

043371582

ABSTRACT:
Liquid having solid particles therein to be filtered out, such as a water slurry, is fed to the outer surface of a filtering device, such as a filter screen, and fed therethrough to the opposite side thereof. A cyclic wave generating device, which may comprise a curved blade, operates in the nature of a hydrofoil to deliver pressure pulses against the last-mentioned surface of the screen to provide shock waves in the liquid in a radial direction opposite to the liquid flow through the screen, such shock waves loosening the particles that may become lodged on the intake part of the screen thereof preventing clogging of such screen. Resonant vibratory energy may also be applied to the liquid on the output side of the screen to effect clearing of the input side of such screen.

REFERENCES:
patent: 1932663 (1933-10-01), Haug
patent: 2727441 (1955-12-01), Cram
patent: 3617543 (1971-11-01), Smith
patent: 4028247 (1977-06-01), Yessaian
patent: 4158629 (1979-06-01), Sawyer

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