Device for powder metering

Details Device for powder metering Device for powder metering

1977-11-25

1979-05-15

Tollberg, Stanley H.

Conveyors: fluid current

With diverse power-driven conveyor

Rotary

222414, 277 3, B67D 554

Patent

active

041543700

ABSTRACT:
A powder metering device for distributing powder which is stored in a hopper, the powder then being delivered by the device to distributing nozzles. The metering device comprises a roller defining an engraved periphery which receives powder from the hopper. The roller carries powder at a controlled rate to a passage where the powder is then moved with the fluid to the distributing nozzles. The chamber holding the roller is maintained under positive pressure. Gaskets are located on opposite sides of the roller and maintained by the chamber pressure against the roll side walls and in engagement with the chamber walls. These gaskets, as well as the positive pressure conditions serve to discourage seepage of powder away from the path between the hopper outlet and the passage leading to the distributing nozzles.

REFERENCES:
patent: 3178236 (1965-04-01), Mitchell
patent: 4071253 (1978-01-01), Heinen et al.

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