Closure device for a conveying unit operating in a vacuum

Details Closure device for a conveying unit operating in a vacuum Closure device for a conveying unit operating in a vacuum

1995-03-24

1996-11-19

Hoge, Gary C.

Conveyors: fluid current

Fluid current conveyor outlet means

With material separating receptacle

406173, 406132, B65G 5346

Patent

active

055755968

ABSTRACT:
A closure device for the discharge outlet of a bulk material conveying unit which operates under vacuum. The outlet has a circular cross-section, and the outlet opening of the conveying unit is closed by means of a freely movable closure element, particularly a ball. The closing effect is achieved by means of a vacuum in the conveying unit. In the open position, i.e. after the vacuum is switched off, the ball moves downward and rests on a supporting device and thereby forms an annular discharge outlet cross-section which is interrupted only by the struts of the supporting device.

REFERENCES:
patent: 1890562 (1932-12-01), Clute
patent: 3423130 (1969-01-01), Milner
patent: 3776600 (1973-12-01), McLeod

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