There are several conveying forms of screw conveyors

Screw conveyors are divided into two types, shaft screw conveyors and shaftless screw conveyors in conveying form, and U-shaped screw conveyors and tubular screw conveyors in appearance. Shaft screw conveyors are suitable for non-viscous dry powder materials and small particle materials (such as cement, fly ash, lime, grain, etc.), while shaftless screw conveyors are suitable for conveyors with viscous and easy-to-wind materials (such as cement, fly ash, lime, grain, etc.) : Sludge, biomass, garbage, etc.).　　The working principle of the screw conveyor is that the rotating screw blade pushes the material to be conveyed by the screw conveyor. The force that prevents the material from rotating with the screw conveyor blade is the weight of the material and the frictional resistance of the screw conveyor casing to the material. The spiral blade welded on the rotating shaft of the screw conveyor, the surface of the blade has solid surface, belt surface, blade surface and other types according to the different materials to be conveyed. The screw shaft of the screw conveyor has a thrust bearing at the end of the material movement direction to give the axial reaction force of the screw with the material. When the length of the machine is long, an intermediate suspension bearing should be added.

Analysis of the future development of screw conveyor

With the development of production efficiency. More and more screw conveyors appear in industrial production. In the steadily expanding screw conveyor industry, people are paying more and more attention to a series of problems such as the efficiency of screw conveyors. Then the future screw loading conveyor industry should Where to go?　　 1. Reduce dust, noise and exhaust gas emitted by various screw conveyors during operation.　　 2. Reducing energy consumption to save energy has become an important aspect of scientific research in the field of transportation technology. The energy consumed for conveying 1 ton of material for 1 km has been regarded as one of the important indicators for conveyor selection.　　 3. Continue to develop towards large-scale. Large-scale includes several aspects such as large conveying capacity, large single machine length and large conveying inclination. The length of the hydraulic conveying device has reached over 440 kilometers. The length of a single belt conveyor is nearly 15 kilometers, and there have been several'belt conveyors' connecting the two places. Many countries are exploring a more complete conveyor structure for long-distance, large-volume continuous conveying of materials.　　 4. Expand the scope of use of screw conveyors. Develop screw conveyors that can work under high temperature, low temperature conditions, corrosive, radioactive, and flammable materials, and can transport hot, explosive, agglomerated, and viscous materials.　　5. The structure of the screw conveyor meets the requirements of a single machine for the automatic control of the material handling system. For example, the trolley conveyor that automatically sorts packages used by the post office should be able to meet the requirements of sorting actions.

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