Apparatus for the batch filtering of suspensions

Details Apparatus for the batch filtering of suspensions Apparatus for the batch filtering of suspensions

1979-11-09

1981-07-07

Gilreath, Stanley N.

Presses

Plural presses

With material transfer from press to press

100118, B30B 1530

Patent

active

042768225

ABSTRACT:
Apparatus for the batch filtration of suspensions comprising a plurality of press-chambers and filter belts for transporting the suspension stepwise through the press-chambers, such that after pressing the suspension in the first press-chamber and before entry of the resultant press cake into at least one subsequent press-chamber, the structure of the press cake is changed by shearing forces and the press cake is curved and at least partially torn apart. In the case of municipal sludge the flaked sludge is subjected in a first pressing zone to slow increase of pressure and a pressure of up to about 1 bar and is subjected in at least one following press zone to a pressure increase which is more rapid than in the first press zone, up to a pressure of about 3 bars.

REFERENCES:
patent: 3232219 (1966-02-01), Gunkel
patent: 3922963 (1975-12-01), Sanderson
patent: 3942433 (1976-03-01), Wohlfarter
patent: 4019431 (1977-04-01), Bastgen
patent: 4168236 (1979-09-01), Bahr

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