What is the difference between a belt conveyor and a screw conveyor

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With the advancement of science and technology, more and more mechanized equipment came into being, especially conveying equipment, which completely replaced manual handling, such as belt conveyors and screw conveyors, both of which are very good conveying equipment, but both The difference is still very big, let's take a look at it below!
First of all, it is not difficult to see from the literal meaning of the two. The belt conveyor conveys the material through the conveyor belt, while the screw conveyor conveys the material through the advancement of the screw blade, both in appearance and internal structure. See the essential difference between the two. Secondly, the working principles of the two are also different. The belt conveyor is a continuous conveying machine with a conveyor belt as a traction member and a bearing member. The conveyor belt is wound around the driving roller and the reversing roller to form a closed loop. The bearing of the conveyor belt and the return branch are supported on the idler roller, and the tensioning device is given appropriate tensioning force. The friction between the two drives the conveyor belt to run. The material is unloaded at the receiving device by the unloading device, or transported to the roller with the conveyor belt for unloading to complete the conveying work.
The screw conveyor is that when the screw shaft is rotating, due to the gravity of the material and the frictional force generated by the tank wall, the material can only move forward along the bottom of the conveyor groove under the pushing of the rotating screw blade, and the material will move forward. The frictional resistance is actually the force of the material's own weight and the screw conveyor casing, so that the material does not rotate with the screw conveyor blades. Finally, we should remind customers who use conveying equipment to choose the conveying equipment that suits them according to their actual conveying materials when purchasing!