When the screw conveyor is transporting materials, its power consumption lies in:

1. Overcome the frictional resistance between the material and the bottom and wall of the trough.
2. Overcome the frictional resistance between the material and the spiral blade.
3. Overcome the frictional resistance in the end bearing and the middle bearing.
4. Overcome some additional resistance in the process of mixing and crushing materials and materials being conveyed.
5. The additional resistance generated is: at the intermediate bearing, the accumulation of materials will inevitably occur; particles of some materials are often stuck in the gap between the edge of the spiral blade and the wall of the trough, and some of them are stuck. The particles will also form a hard shell due to extrusion, etc., which can form additional resistance.