Screening machine

Details Screening machine Screening machine

1991-04-23

1993-11-16

Bollinger, David H.

Classifying, separating, and assorting solids

Sifting

Elements

209546, B07B 142

Patent

active

052615405

ABSTRACT:
In a screening machine with a three-dimensional screening motion, a screen carrier for at least one screen plate is provided. The screen carrier is movable relative to a housing from which it is supported by springs. The screen carrier is driven by an electromagnetic drive device. The amplitude of oscillation of the screen carrier should be accurately readable, on the one hand, and, on the other hand, made adjustable for comparative tests. For this purpose, between the housing and the screen carrier an inductive displacement pickup for determining the amplitude of oscillation of the screen carrier is provided. This pickup is connected to a control unit which represents the determined amplitude of oscillation on an optical display and/or controls the electromagnet drive device to obtain a predetermined amplitude of oscillation.

REFERENCES:
patent: 2730236 (1956-01-01), Missien
patent: 2946440 (1960-07-01), Simpson
patent: 3650401 (1972-03-01), Riesbeck et al.
patent: 3932442 (1976-01-01), Salmon et al.
patent: 4369398 (1983-01-01), Lowry, Sr.
Retsch-Laboratory Sieving Machine Vibro; Printed in W. Germany 006/85.

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