Classifying – separating – and assorting solids – Sifting – With liquid treatment
Patent
1989-05-26
1990-11-06
Focarino, Margaret A.
Classifying, separating, and assorting solids
Sifting
With liquid treatment
209300, B07B 120
Patent
active
049684175
ABSTRACT:
An apparatus for screening a suspension of fibrous cellulose pulp comprising a housing and a rotor shaft, the housing having an inlet for the suspension and containing first and second screening sections, each comprising a rotor member mounted on the rotor shaft and a cylindrical screen cooperating therewith and defining an outer accept chamber and an inner screening chamber, the first screening section including an inlet chamber communicating with the screening chamber of the first screening section, and an outlet chamber communicating with the screening chamber of the first screening section, for discharging a first reject, and the second screening section including an outlet chamber communicating with the screening chamber of the second screening section, for discharging a second reject from the apparatus, and the accept chamber of the second screening section having an outlet for discharging screened fiber suspension. The outlet chamber of the first screening section includes an outlet disposed for discharging the first reject from the apparatus, and the accept chamber of the first screening section is in open communication with the screening chamber of the second screening section via an interior connection for conveying the fiber suspension screened in the form of an accept in the first screening section to the second screening section to be re-screened, the outlet from the accept chamber being disposed for discharging repeatedly screened fiber suspension in the form of a final accept.
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Focarino Margaret A.
Kamyr AB
Wacyra Edward M.
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