Centrifugal pulp screening device and method

Details Centrifugal pulp screening device and method Centrifugal pulp screening device and method

1982-07-16

1984-07-31

Lacey, David L.

Classifying, separating, and assorting solids

Sifting

Feeding

209270, 209273, 210456, B07B 122

Patent

active

044629001

ABSTRACT:
A centrifugal pulp screen device including a perforate wall cylindrical screen, an outer enclosing housing, a centrally located stock supply conduit and a distributor for the stock including an annular distribution slice opening having a fixed lower lip and movable upper lip with the slice discharging against fixed angular vanes which direct the stock in a spiralling centrifugal flow along the inner surface of the screen with the volume of flow controlled by adjustment of the slice opening and the velocity controlled by a variable delivery supply pump and the velocity affecting the spiralling centrifugal action by impact of the stock against the vanes. A corresponding method for screening the stock is also disclosed.

REFERENCES:
patent: 2782897 (1957-02-01), Derrick, Jr.
patent: 3247965 (1966-04-01), Braun
patent: 3276584 (1966-10-01), Mathewson
patent: 3280981 (1966-10-01), Renfren
patent: 4238324 (1980-12-01), Musslemann et al.

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