Screw conveyor having stopper bar means

Details Screw conveyor having stopper bar means Screw conveyor having stopper bar means

1976-04-23

1978-02-21

Stoner, Jr., Bruce H.

Conveyors: power-driven

Conveyor section

Screw

198548, 100145, 425208, 366 80, 366 89, B65G 3314

Patent

active

040748030

ABSTRACT:
An improved screw feeder such as may be used for conveying ligno-cellulosic materials such as wood chips, shavings, sawdust and the like to pulping apparatus includes a plurality of stopper bars positioned symmetrically about the inner periphery of the screw feeder throat inlet. The stopper bars are narrow, elongate wedge-shaped and extend from the greater diameter flare bore of the conical throat to the lesser diameter taper bore. The stopper bars prevent material from rotating with the screw rather than advancing longitudinally through the throat and thus decrease plugging and clogging problems so that a higher pulping capacity due to improved feed is obtained.

REFERENCES:
patent: 1353917 (1920-09-01), Lambert
patent: 2516770 (1950-07-01), Hanna
patent: 2540670 (1951-02-01), Hoenecke
patent: 2770837 (1956-11-01), Reifenhauser
patent: 3458894 (1969-08-01), Wheeler
patent: 3490624 (1970-01-01), Fichtl
patent: 3633494 (1972-01-01), Schippers et al.
patent: 3788612 (1974-01-01), Dray
patent: 3812985 (1974-05-01), Lindeborg et al.
patent: 3850415 (1974-11-01), Hansen
patent: 3964492 (1976-06-01), Crego et al.

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