The equipment is a kind of machine, in which the speed reducer drives the spiral to operate and move the materials so as to realize the purpose of conveying. It has such advantages as simple structure, small sectional area, convenient closed transportation and the availability of multi-spot feeding or discharging.

●Shell form: "0" shape or "U" shape

●Spiral form: shaft-free, single-shaft or multi-shaft

●According to different flow directions of materials, five kinds of feeding and discharging allocations can be selected.