... of concrete mixing plant. The working principle is: the screw blades in the round steel tube was dirven by the reducer ... materials such as fly ash, cement, etc.Screw Conveyor made up of motor, reducer, outer tube, screw axis, bearing, gimbal(selectable), introduced flange( ... superior quality, compactness, low noise, leakproofness. It is famous in china and sells well all over the world. item Φ219 ...