SCREW CONVEYOR Russian patent published in 2012 - IPC B65G33/08 B65G33/24 B65G33/32 

FIELD: transport.

SUBSTANCE: screw conveyor consists of shaft 1 with helical surface 2 running in radial plain bearings 3, 4 fitted in face walls of case 7 furnished with coal loading and discharge branch pipes 8, 9. Said shaft is articulated with conveyor drive made up of motor 10 and reduction gear 11 via coupling made up of half-coupling 12 fitted on low-rpm shaft of reduction gear and half-coupling 13. Shaft extension on drive side is coupled with half-coupling 13 by splined joint 14 with centering along side walls of square-sided teeth and provided with cylindrical ledge 15 extending beyond radial bearing interacting with compression spring 16 on said shaft. Second end of compression spring 16 is arranged to interact with conveyor base 17 fixed thrust 18. Second extension of the shaft is articulated with moving member 19 of direct-acting vibrator 20 and spring loaded toward case by means of compression spring 21. Vibrator case is secured on case face wall.

EFFECT: decreased consumed power, higher efficiency.

3 dwg