Pressurized screening device

Details Pressurized screening device Pressurized screening device

1990-06-05

1991-08-20

Hajec, Donald T.

Classifying, separating, and assorting solids

Sifting

With liquid treatment

209306, 209380, B07B 120, D21D 516

Patent

active

050412132

ABSTRACT:
The pressurized screening device designed for screening fiber pulps, especially paper pulp is provided with a screenplate with perforations, cleaning members being in connection with and moving relative to the screenplate, devices for generating the relative motion between the screenplate and the cleaning members, piping firstly for introducing fiber pulp into the pressurized screening device, secondly for conducting the accepted fiber pulp into the next process stage and thirdly for discharging rejected pulp from the pressurized screening device preferably to be returned into the pressurized screening device, and guiding devices for shifting the flow direction of unscreened fiber pulp to a direction substantially perpendicular to the screenplate. The guiding devices include a combination of several compartments for guiding the flow of fiber pulp which are comprised of side walls, a back wall and baffle blades.

REFERENCES:
patent: 817333 (1906-04-01), Orrman
patent: 868341 (1907-10-01), Holden
patent: 1742592 (1930-01-01), Haug
patent: 2246669 (1941-06-01), Cowan
patent: 3637077 (1972-01-01), Cowan
patent: 4749475 (1988-06-01), Hooper

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