Combination feeder and sifter

Classifying – separating – and assorting solids – Sifting – Feeding

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Details

222199, B07B 128

Patent

active

042761573

ABSTRACT:
The disclosure relates to a combination feeder and sifter for particulate material. The apparatus includes a vertically elongated hopper for holding a bulk supply of the particulate material. A vibratory unit is positioned below the hopper and is movable independently thereof. An upper panel of the vibratory unit constitutes a bottom-forming panel of the hopper and is in direct contact with the bulk supply of particulate material. The bottom-forming panel has an adjustable feed rate device thereon which, when the vibratory mechanism is in operation, provides for a controlled rate of flow of particulate material from the hopper on to a vibrating sifting screen supported directly underneath the panel. The configuration and arrangement of the supply hopper and the bottom-forming panel are such that the mass of particulate material affecting the operation of the vibratory panel approximates that of an imaginary conical pile of the material. The apparatus permits a single vibratory drive unit to carry out both feeding and sifting operations simultaneously.

REFERENCES:
patent: 2095283 (1937-10-01), Peal
patent: 3035700 (1962-05-01), McCausland
patent: 3278090 (1966-10-01), Wahl
patent: 3399771 (1968-09-01), Hryniowski
patent: 3476245 (1969-11-01), Swallow
patent: 3563420 (1969-06-01), Ansley
patent: 3971493 (1976-07-01), Williams
"Sweco Vibro-Energy Separators" (Copyright 1969, 1976).
"Sweco Bin-Evac Vibratory Bin Evacuators" (1971).

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