Screw driven sludge thickeners

Details Screw driven sludge thickeners Screw driven sludge thickeners

1984-01-26

1985-07-09

Adee, John

Liquid purification or separation

Filter

With residue removing means or agitation of liquid

100117, 100145, 198676, 210415, C02C 300

Patent

active

045280983

ABSTRACT:
An apparatus for removing liquid from a solid suspension includes a screw conveyor in a housing having a suspension inlet, a liquid outlet and a separate outlet for the thickened solids. To increase the thickening effect, the faces of the screw threads are coated or treated to cause the coefficient of friction of the front, thrust faces to be higher than that of the rear faces. The coefficients can also be varied longitudinally, either continuously or in stages.

REFERENCES:
patent: 3550526 (1970-12-01), Hoover
patent: 3585924 (1971-06-01), Nolan
patent: 3624729 (1971-11-01), Hoover
patent: 4380496 (1983-03-01), Maffet

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