Drum filter shower roll

Details Drum filter shower roll Drum filter shower roll

1995-05-19

1996-10-15

Popovics, Robert J.

Liquid purification or separation

Processes

Separating

210772, 210784, 210396, 210402, 210406, 210407, 210408, 162 56, 100 73, 100 90, 100121, B01D 3700, B01D 33073

Patent

active

055651100

ABSTRACT:
A method and apparatus for improving the operation of a vacuum drum filter. A hollow and perforated shower roll is located at the top of a vacuum drum apparatus for drying and cleaning paper pulp. The interior of the shower roll is provided with a liquid distribution pipe having a plurality of spaced openings therealong, the pipe also having a substantially vertically extending dam which extends radially to adjacent the lower interior surface of the shower roll. In operation, rotation of the vacuum drum in a vat of paper pulp to be dewatered results in the continuous formation of layer of pulp on its exterior surface, the layer being compressed by the shower roll at the nip between the vacuum roll and the shower roll. Concurrently, the shower roll discharges or exudes water onto and into the pulp layer at the nip.

REFERENCES:
patent: 2431009 (1947-11-01), Young
patent: 2696148 (1954-12-01), Hornbostel
patent: 2711359 (1955-06-01), Johansen
patent: 3454970 (1969-07-01), Sutherland
patent: 3878698 (1975-04-01), Eriksson et al.
patent: 4205541 (1980-06-01), Zucker
patent: 4737277 (1988-04-01), Lenac
patent: 4769986 (1988-09-01), Kokkonen
patent: 4795558 (1989-01-01), LaValley

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