Classifying – separating – and assorting solids – Sifting – Elements
Patent
1987-03-05
1989-03-14
Reeves, Robert B.
Classifying, separating, and assorting solids
Sifting
Elements
209273, B07B 146
Patent
active
048122297
ABSTRACT:
The screen wire has depressions (5), on the base of which there are fine slits (4) or wire holes. The depressions are generally oblong, their longitudinal extension being parallel or slightly inclined to the axis of rotation of a rotor and the screening blades (2) skirting close to the screen surface. The front edge of the depressions (5)--viewed in the direction of rotation of the screening blades (2)--is inclined towards the enveloping surface of the screen, and has an angle of between 15.degree. and 60.degree. from the surface perpendicular and is preferably inclined at 30.degree.. The slits or rows-of-holes run parallel to the front edge of the depressions (5). These screen cages for the screening of screening fiber suspensions provide better screening efficiency and they have less blockage.
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Hajec Donald T.
J. M. Voith GmbH
Jeffers Albert L.
Reeves Robert B.
Robinson Richard L.
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