Classifying apparatus and method

Details Classifying apparatus and method Classifying apparatus and method

B - Operations, Transporting

07

B

209/125, 209/141

B07B 1/00 (2006.01) B07B 1/28 (2006.01) B07B 1/34 (2006.01) B07B 1/42 (2006.01) B07B 1/54 (2006.01)

Patent

CA 1194840

"CLASSIFYING APPARATUS & METHOD" Ronald W. Nelson Robert D. Nelson ABSTRACT OF THE DISCLOSURE 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 opera- ting 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.

420363

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