Screening device for a fiber slurry, and a backwash means theref

Details Screening device for a fiber slurry, and a backwash means theref Screening device for a fiber slurry, and a backwash means theref

1993-07-12

1994-08-30

Olszewski, Robert P.

Classifying, separating, and assorting solids

Plural, diverse separating operations

Aqueous suspension and sifting

209270, B03B 700, B07B 122

Patent

active

053419367

ABSTRACT:
A hydrofoil in close proximity to an outboard surface of a rotatable slurry screen, and a hydrofoil in close proximity to an inboard surface of the screen, cooperate to create high and low slurry pressures at the surfaces which result in causing the slurry to surge through the screen to backwash the latter, thereby dislodging slurry-borne substances which tend to clog apertures in the screen.

REFERENCES:
patent: 2835173 (1958-05-01), Martindale
patent: 2908390 (1959-10-01), Rich et al.
patent: 3363759 (1968-01-01), Clarke-Pounder
patent: 3404065 (1968-10-01), Ingemarsson
patent: 3672506 (1972-06-01), Syrjanen
patent: 3759392 (1973-09-01), Syrjanen
patent: 3939065 (1976-02-01), Ahlfors
patent: 4842722 (1989-06-01), Holz
patent: 5143220 (1992-09-01), Young et al.
patent: 5172813 (1992-12-01), Ljokkoi
patent: 5176261 (1993-01-01), Holz

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