The spiral conveyor - the mechanism used to transport dust, loose, small-sized materials. The main operating element is a screw with blades arranged in the trough. It is designed for transporting in a horizontal or inclined (60 °) directions. The screws are used in various industries: grain elevator, grinding, construction, chemical, mining, coal, etc.

 The advantages of screw conveyors: simplicity of the device, good sealing, easy and convenient technological service, small size, easy to intermediate unloading and preservation of dust production.