Classifying – separating – and assorting solids – Sifting – With liquid treatment
Patent
1979-08-27
1981-05-12
Cuchlinski, Jr., William A.
Classifying, separating, and assorting solids
Sifting
With liquid treatment
209306, 210213, B07B 120
Patent
active
042670357
ABSTRACT:
A rotary screening apparatus is provided for separating impurities in suspensions such as paper pulp or other slurries. The apparatus has a pressurized housing with a cylindrical screenplate separating the housing into an outer annular accepts chamber and an inner feed chamber. An impeller with one or more blades is mounted inside the feed chamber and imparts a rotary motion to the slurry. A series of horizontal baffles attached to the impeller divide the feed chamber into at least three sections. Piping is provided to inject dilution liquid into at least the lower two sections at separately controllable rates to compensate for the dewatering which occurs in the inlet section. The ability to treat and control individually each successive section of the screening device enables essentially complete separation of desirable fibers from impurities.
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patent: 2942731 (1960-06-01), Soldini
patent: 3081873 (1963-03-01), Cowen et al.
patent: 3243041 (1966-03-01), Cowan
patent: 3245535 (1966-04-01), Cowen
patent: 3713536 (1973-01-01), Hooper
Cuchlinski Jr. William A.
The Black Clawson Company
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