Vibrating tubular screen

Details Vibrating tubular screen Vibrating tubular screen

1976-03-24

1977-06-21

Nozick, Bernard

Classifying, separating, and assorting solids

Sifting

Drum sifters

209365R, 209369, 209406, 259 3, B07B 126

Patent

active

040306062

ABSTRACT:
A vibratory tubular screen for separating particulate material, such as wood chips, into coarse and fine classifications. A hollow tubular screen is mounted for rotation about its axis with the screen axis inclined downwardly away from a receiving hopper through which material is introduced into the interior of the screen. A roller support assembly rotatably supporting the screen intermediate its ends includes a resiliently biased support member which is deflectable downwardly in accordance with the combined weight of the screen and material contained in the screen. When the combined weight of the screen and material exceeds a predetermined weight, the resiliently biased member is deflected downwardly to a position in which a vibrating element comes in contact with the screen to impart a radially directed vibratory action to the screen as it is driven in rotation.

REFERENCES:
patent: 378785 (1888-02-01), Gilleland
patent: 1209861 (1916-12-01), Lennig
patent: 2027375 (1936-01-01), Fraser
patent: 2978232 (1961-04-01), Kruzan

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