B - Operations – Transporting – 65 – G
Patent
B - Operations, Transporting
65
G
222/84
B65G 53/00 (2006.01) B65G 47/19 (2006.01) F23K 3/16 (2006.01)
Patent
CA 1098875
A B S T R A C T Apparatus for feeding at a variable controlled rate particulate solid material, such as coal, from a supply lo- cated above a gravimetric feeder to a discharge chute located below the feeder. The particulate material flows to the feeder from the supply along a path having a generally vertical center line and the discharge chute provides a flow path having a gen- erally vertical center line closely laterally spaced relative to the center line of flow to the feeder. The feeder apparatus has a horizontally extending housing with an upwardly facing inlet, through which the material flows to the feeder, and a downwardly facing outlet forming part of the discharge chute through which the material flows from the feeder. Within the housing is a main feeder conveyor comprising an endless belt with a generally horizontal span adapted to receive at one end the particulate material flowing to the feeder and to convey in a layer a measured quantity of material horizontally across weighing means to an exit zone at the opposite end of the belt, the horizontal distance being necessarily greater than the spacing between the center lines of flow to the feeder and through the discharge chute. A gravimetric control system for controlling the amount of material deposited on the belt is associated with the main feeder conveyor. Particulate material that drops off the main conveyor belt at the exit zone is re- ceived on a return belt conveyor and carried in a reverse di- rection a sufficient distance to bring the material to the dis- charge chute. Cooperation between the main feeder conveyor and the return conveyor permits gravimetric feeding of partic- ulate material to a discharge chute that is closely laterally spaced from the flow path of material to the main conveyor by a distance that is substantially less than the length of travel of the material on the main conveyor.
333231
Christofer Donald E.
Stock Arthur J.
Macrae & Co.
Stock Equipment Company
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