Apparatus for treating pulp

Details Apparatus for treating pulp Apparatus for treating pulp

1993-03-15

1994-08-16

Spear, Frank

Liquid purification or separation

Filter

Movable prefilt distributor

210415, 162 55, 162242, 100117, B01D 3528

Patent

active

053384512

ABSTRACT:
An apparatus for treating pulp includes an outer casing, a stationary screen surface mounted in the outer casing. A conduit introduces pulp into the interior of the screen surface. An annular space is defined between the screen surface and the casing for receiving the fraction passing through the screen surface. A feed screw is rotatably mounted in the interior of the screen surface. The feed screw extends vertically or is to some extent inclined relative to the vertical direction. The feed screw includes a shaft and pulp conveying blades. The periphery of the feed screw is provided with a nozzle conduit extending substantially parallel to the shaft and located close to the screen surface for spraying washing liquid to the screen surface. The apparatus is especially suitable for screening and/or thickening of fiber suspensions in the wood processing industry.

REFERENCES:
patent: 3230865 (1966-01-01), Hibbel et al.
patent: 3616932 (1971-11-01), Bancroft
patent: 3947314 (1976-03-01), Chupka et al.
patent: 4160722 (1979-07-01), Marsh

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