Screw seal

Details Screw seal Screw seal

1987-09-30

1989-11-21

Werner, Frank E.

Material or article handling

Apparatus for moving material between zones having different...

Including screw conveyor

406 60, 100145, 241246, 414213, 414326, 222413, 222189, 222195, 198669, 198670, 198671, B65G 5348

Patent

active

048818623

ABSTRACT:
A screw seal for conveying bulk particulate solids between spaces at differing gas pressures with minimal leakage of gas. A tubular housing encloses a screw conveyor section and a sealing section receiving the solids and forming a sealing plug. The sealing section has a divergent configuration that functions in combination with friction to create sufficient solids pressure with minimal driving torque and wear on the screw conveyor.

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