Screw conveyor

The screw conveyor is divided into two kinds of shaft screw conveyor and shaftless screw conveyor in the form of transportation, and is divided into U-shaped screw conveyor and tubular screw conveyor in appearance. Shaft screw conveyor is suitable for non-viscous dry powder materials and small particle materials. (e. g. cement, fly ash, lime, grain, etc.) and shaftless screw conveyors are suitable for conveyors made of viscous and easily wound materials. (For example: sludge, biomass, garbage, etc.) The working principle of the screw conveyor is that the rotating screw blade moves the material and conveys the screw conveyor, so that the material does not rotate with the screw conveyor blade. The force is the weight of the material itself and the frictional resistance of the screw conveyor casing to the material.

The spiral blade welded on the rotating shaft of the screw conveyor includes solid surface type, belt surface type, blade surface type and other types according to the different conveying materials. 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 to the screw with the material. When the captain is long, an intermediate hanging bearing should be added.