Particulate solids pump

Details Particulate solids pump Particulate solids pump

1975-05-12

1976-08-17

Schacher, Richard A.

Cutlery

277 59, B65G 5348, F16J 1554

Patent

active

039750582

ABSTRACT:
This particulate solids pump is of the screw conveyor type for transmitting particulate solids from a hopper through a barrel when the screw conveyor is rotated and in which a flowstream of gas is supplied for facilitating the movement and suspension of the particulate solids after exiting the barrel. A sealing chamber formed by termination of the screw conveyor short of the exit end of the barrel provides an accumulation of particulate solids therebetween and a spring biased flapper valve to form a blow-back pressure seal. A flapper valve at the exit end of the barrel operates to loft the particulate solids exiting from the barrel into the flowstream of gas. A sealing apparatus provides lateral and axial sealing of the rotating shaft of the screw conveyor.

REFERENCES:
patent: 2355774 (1944-08-01), Baker
patent: 3602552 (1971-08-01), Morgan

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