Device for screening fiber suspensions

Details Device for screening fiber suspensions Device for screening fiber suspensions

1990-07-17

1991-09-03

Hajec, Donald T.

Classifying, separating, and assorting solids

Sifting

With liquid treatment

209306, 210413, D21D 516, B07B 104

Patent

active

050451839

ABSTRACT:
The rotor of a sorter has a circumference which, in cross section perpendicular to the rotor axis of rotation, is essentially composed of circular arcs. Depending on sorter size, the number of circular arcs amounts to between two and eight. The eccentricity of the circular arcs relative to their center, based on the rotor axis of rotation, amounts to preferably between 4 and 10 mm. This makes it possible to obtain slight rotor stresses at a good sorting efficacy, preferably also with a mean substance density of more than 3% of fiber suspensions. The difference between the smallest and greatest rotor spacing e=f.sub.max -f.sub.min amounts to maximally 60 mm, preferably 20 mm.

REFERENCES:
patent: 3762401 (1973-04-01), Bolton, III et al.
patent: 4200537 (1980-04-01), Lamort
patent: 4855038 (1989-08-01), LeBlanc
patent: 4950402 (1990-08-01), Frejborg

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