China Screw Conveyor for Slag of Coal Fired Power Plant

Screw conveyor is a kind of machinery that uses motor to drive screw rotation and push materials to achieve the purpose of conveying. It can be transported horizontally, obliquely or vertically. It has the advantages of simple structure, small cross-sectional area, good sealing, convenient operation, easy maintenance and closed transportation. Screw conveyor can be divided into shaft screw conveyor and shaftless screw conveyor in conveying form, and U-type screw conveyor and tubular screw conveyor in appearance. The shaft screw conveyor is suitable for cohesionless dry powder materials and small particle materials (such as cement, fly ash, lime, grain, etc.), while the shaftless screw conveyor is suitable for viscous and easy winding materials. (for example: sludge, biomass, garbage, etc.) the working principle of the screw conveyor is that the rotating spiral blade moves the material and carries out the screw conveyor conveying. The force that makes the material not rotate with the screw conveyor blade is the material weight and the friction resistance of the screw conveyor shell to the material. For spiral blades welded on the rotating shaft of screw conveyor, the surface types of blades include solid surface, belt surface, blade surface, etc. A thrust bearing is provided at the end of the screw shaft of the screw conveyor in the direction of material movement to give the axial reaction force to the screw along with the material. When the length of the machine is long, the middle hanging bearing should be added.