Spiral conveyor, commonly known as auger, is suitable for horizontal conveying, inclined conveying, vertical conveying and other forms of granular or powdery materials. The conveying distance varies depending on the deformity, generally ranging from 2 meters to 70 meters.

Structural features: Spiral blades are welded onto the rotating shaft of the screw conveyor, and the blade surface types include solid surface type, belt surface type, blade surface type, etc. depending on the conveyed material. The screw shaft of the screw conveyor has a thrust bearing at the end of the material movement direction to provide axial reaction force to the screw along with the material. When the machine is long, an intermediate suspension bearing should be added.

Transportation principle: The rotating spiral blades push the material and transport it on the spiral conveyor. The force that prevents the material from rotating together with the blades of the screw conveyor is the weight of the material itself and the frictional resistance of the screw conveyor housing to the material.