Screw Feeder——Push the material to achieve the purpose of conveying
2023-07-14
The screw feeder is a kind of machine that uses the motor to drive the screw to rotate and push the material to achieve the purpose of conveying. It can be transported horizontally, inclined or vertically, and has the advantages of simple structure, small cross-sectional area, good sealing, convenient operation, easy maintenance, and convenient closed transportation. Screw conveyors are divided into two types: shaft screw conveyors and shaftless screw conveyors in terms of conveying form, and U-shaped screw conveyors and tubular screw conveyors in terms of appearance. The shaft screw conveyor is suitable for non-viscous dry powder materials and small particle materials (such as: cement, fly ash, lime, grain, etc.), while the shaftless screw conveyor is suitable for conveying viscous and easily entangled materials. (Example: sludge, biomass, garbage, etc.) The working principle of the screw conveyor is that the rotating screw blades push the material to be transported by the screw conveyor, and the force that prevents the material from rotating with the screw conveyor blades is the material's own weight and The frictional resistance of the screw conveyor casing to the material. The spiral blades welded on the rotating shaft of the screw conveyor have different surface types such as solid surface, belt surface, and blade surface 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 screw axial reaction force with the material. When the length of the screw conveyor is long, an intermediate suspension bearing should be added.
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