Screw machine widely used in various industries, such as building materials, chemical industry, electric power, metallurgy, coal mine coal, food and other industries, applicable to horizontal or oblique conveying powder, granulated and small lump materials, such as coal, ash, slag, cement, food, etc., the material temperature is less than 200 °C. Screw machine is not suitable for transportation of perishable materials, big viscosity, easy to agglomerate. In concrete mixing station, the action of the screw conveyor got the biggest reflect.

Three :Screw conveyor technical characteristics

Simple structure, small cross section size, good seal, reliable operation, low manufacturing cost, convenience of intermediate loading and unloading, transportation direction can reverse, can also be transmitted at the same time two opposite direction. Transport but also for material in the process of stirring, mixing, heating and cooling operations. Through the loading and unloading valve material flow can be adjusted. But unfavorable transportation of perishable, big viscosity, easy to agglomerate and chunks of material. Material is easy broken, in the process of conveying screw and chute is easy to wear. Unit power is larger. Used to keep the seal and spiral chute and have proper clearance between the manger. Screw conveyor by conveyor commonly ontology, in and out of the mouth and drive of three most; Screw conveyor of the screw blade entity helicoid, belt type spiral blades of screw surface and surface three forms, among them, the spiral vane surface application is relatively small, it is mainly used for transporting materials in large viscosity and compressibility of the screw surface type, in complete conveying operation process, at the same time and complete the mixing of materials, mixing, and other functions.

Four :Internal structure of spiral mixer technology parameters