Screw Conveyor, also called auger, drives without moving device. It does not necessarily use moving screw for demolition of crane bearings. It shows high reliability, long life service, strong adaptability, easy installation and maintenance.
Screw conveyor has some good features as follows: simplified structure, small cross-sectional size, good sealing, reliable manufacturing and low cost, easy to intermediate loading and unloading, reversible transportation direction, and able to convey in both opposite directions at the same time.
It is easy to wear where between screw and trough. It requires a larger unit of power. It is necessary to adequate sufficient space between screw and trough to insure good enough sealing character. The wear-resistant sand auger or broken arch type auger should be used for convey building materials, especially for sand convey.