Vacuum filtration apparatus with horizontal filter-like conveyor

Details Vacuum filtration apparatus with horizontal filter-like conveyor Vacuum filtration apparatus with horizontal filter-like conveyor

1991-06-13

1993-06-22

Hruskoci, Peter

Liquid purification or separation

Filter

Movable medium

210391, 210400, 210406, B01D 3370

Patent

active

052214729

ABSTRACT:
A vacuum filtration apparatus is provided with one or more vacuum chambers fixedly secured at predetermined positions. The interior of the vacuum chamber alternates between a partial vacuum and atmospheric pressure. An endless filter belt has a horizontal section disposed above the vacuum chamber. A slurry is fed from one or more slurry feeders onto the horizontal section of the endless filter belt so as to create a cake of solid particles. Water is fed from one or more water feeders onto the cake to wash the solid particles on the endless filter belt. The endless filter belt intermittently advances by a predetermined length. When the endless filter belt is stopped, the vacuum chamber is under a vacuum so as to draw the liquid constituent from the slurry, thereby obtaining a purified cake of the solid particles. The vacuum filtration apparatus is provided with a coupling bar at which the slurry feeder and the water feeder is attached. The coupling bar can reciprocate along the endless filter belt by the length of the intermittent advancement of the endless belt. Preferably, the coupling bar is connected to a belt advancing device so that the advancement of the endless filter belt causes movement of the slurry feeder and the water feeder in the direction which is the reverse of the direction of advancement of the endless filter belt.

REFERENCES:
patent: 2529777 (1950-11-01), McInnis
patent: 3513974 (1970-05-01), Markwick
patent: 4038193 (1977-07-01), Oosten
patent: 4127487 (1978-11-01), Havalda
patent: 4420402 (1983-12-01), Bolton et al.
patent: 4673514 (1987-06-01), Casey et al.
patent: 4836100 (1989-06-01), Johnson et al.
patent: 4851113 (1989-07-01), Evans
patent: 4908136 (1990-03-01), Chou et al.
patent: 5112485 (1992-05-01), Hirs
English Transcript of JP-A-114616.

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