The way that screw conveyor works
The working principle of the screw conveyor is that the rotating spiral blade conveys the material and the surface shape of the blade has a solid surface type, a belt surface type, a blade surface type and the like according to different materials to be conveyed.
The screw shaft of the screw conveyor has a thrust bearing at the end of the material moving direction to give the axial reaction force of the spiral with the material. When the length of the machine is long, the intermediate hanging bearing should be added.
When the screw shaft rotates, due to the gravity of the material and the friction generated by the wall of the tank, the material can only move forward along the bottom of the conveyor under the pushing of the blade.
The movement of the material in the intermediate bearing is dependent on the thrust of the material that is moving forward.
Therefore, the transportation of materials in the conveyor is a kind of slip motion.
In order to make the screw shaft in a more favorable tension state, the driving device and the discharge port are generally placed at the same end of the conveyor, and the feed port is placed as close as possible to the tail of the other end.