Screw conveyor capable of maintaining a relatively uniform flow

Details Screw conveyor capable of maintaining a relatively uniform flow Screw conveyor capable of maintaining a relatively uniform flow

1978-06-26

1980-06-10

Reeves, Robert B.

Conveyors: power-driven

Conveyor section

Screw

198664, 198676, B65G 3300

Patent

active

042068410

ABSTRACT:
A screw conveyor is provided capable of maintaining a relatively uniform flow of conveyed material, even when operating well below its flow capacity, having a helical screw with a plurality of helical blade segments at one end, each segment extending over an arc of from about 100.degree. to about 130.degree. about the central stem of the screw, and having a pitch length within the range from about 0.5 to about 3 times the pitch length of the helical screw; the pitch length of the helical screw being from about 0.5 to about 1 times its diameter; the segments being spaced apart a distance within the range from about 0 to about 22 mm; the plurality of segments taken collectively defining a plurality of through passages extending axially along the central stem of the screw, and extending in uniformly spaced relationship .+-.10.degree. circumferentially about the 360.degree. circumference of the passage; each segment having a base portion attached at its inner periphery to the central stem of the screw over an arc of from about 50.degree. to about 60.degree., and a wing portion extending about and closely abutting the inside wall of the passage, and terminating in a tip abutting the inside passage wall, the wing portion defining an open space between its inner periphery and the central stem of the screw, the space forming a part of a through passage defined by the segments.

REFERENCES:
patent: 611383 (1898-09-01), Landis
patent: 3464539 (1969-09-01), Kelly

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