B - Operations – Transporting – 65 – G
Patent
B - Operations, Transporting
65
G
302/28
B65G 65/30 (2006.01) B65G 53/40 (2006.01) B65G 53/46 (2006.01)
Patent
CA 1060066
ABSTRACT OF THE DISCLOSURE Apparatus for discharging bulk material into a pneumatic conveyor conduit has two chambers, one disposed above the other, the upper chamber having an inlet orifice controllable by a pivotal closure flap and the lower chamber communicating with an outlet orifice from the upper chamber, also controllable by a pivotal closure flap. The flaps are balanced as by counter- weights so as to leave their respective orifices virtually completely open in the absence of outside force acting on the flaps, and pressure nozzles are disposed adjacent the flaps in their fully open position, to assist movement towards their closed positions as required. A level sensing means is arranged in the lower chamber to sense when material therein drops to a predetermined level, for re-filling of the chamber from the upper chamber.
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