1.The structure of screw conveyor
The overall structure of the screw conveyor, as shown in Figure 2-1, is composed of a large material groove and a rotating shaft, wherein the rotating shaft is fitted with a spiral blade. The top and bottom of the large material groove are open at the inlet and outlet respectively. The rotating shaft is fixed by the bearing seat at both ends of the groove, and the shaft head near the 2 loading funnel end of the shaft is connected with the 8 drive motor device. The spiral shaft rotates with the help of a drive motor device, and the material enters the inside of the groove from the loading funnel, while the discharge is carried out at the unloading port at 7 end. If unloading is required in the middle of the groove, the discharge port can be improved to add a controllable unloading gate.

1. Front bearing 2. Loading hopper 3. Shaft 4. Trough 5. Bearing 6. the end bearing 7. Discharge outlet 8. Drive device
2.The working principle of screw conveyor
The shape of the spiral blade is a helical surface. When the screw conveyor is in operation, the material is added from the feed port, and when the rotating shaft is driven and rotated, at any radius r, the helical blades apply a P1 thrust to the material, and the thrust and the friction force between the material and the blade are synthesized powerless P, and the joint force is decomposed, in which the radial division P3 pushes the material forward. ), And the other force of the joint forces P4 is vertical downward, the force causes the material to leave the blade, due to the joint action of P3 and P4, so that the material will not rotate with the spiral blade, by the spiral blade applied to the thrust, axial Division force, so that the material will only be in the axial direction of the material Groove movement. This is how the screw conveyor works, the material force is shown in Figure 2-2, the figure alpha is the spiral surface lift angle.