Classifying – separating – and assorting solids – Sifting – Plane sifters
Patent
1982-02-03
1984-04-24
Nozick, Bernard
Classifying, separating, and assorting solids
Sifting
Plane sifters
55300, B07B 134
Patent
active
044446560
ABSTRACT:
Classifying apparatus and methods for the separation of solids of differing sizes includes a screening deck having an inclined frame and a screen in the frame on which the solids are deposited and moved downwardly. A plurality of beams extend beneath the screen transversely of the frame and the ends of the beam are mounted to the frame by a resilient mounting to isolate vibrations of the beam from the frame. A tappet assembly is fixed to each of the beams and contacts the underside of the screen and a vibrator motor is mounted to each of the beams to directly vibrate the beam, the tappet assembly of each beam, and the screen. Controls may be provided for independently operating each of the vibrators to vary one or both of the frequency or the amplitude of the vibrations of the screen over its length. The screen preferably includes a plurality of screen portions which are crowned transversely of the frame by the tappet assemblies, and the tappet assemblies include a pair of spaced parallel bars of continuous length extending transversely of the frame and in contact with the screen.
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patent: 4319993 (1982-03-01), Krause
Nelson Robert D.
Nelson Ronald W.
Nozick Bernard
Production Engineered Products, Inc.
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