LSY series screw conveyor is a new type of equipment which continuously conveys materials by rotating spiral body in a closed shell with circular cross section. The machine has the advantages of compact structure, small cross-section area, light weight, good sealing performance, high conveying efficiency and flexible process arrangement. The universal inlet and outlet pioneered in China is adopted to make it more conducive to installation, production and moisture-proof. The machine is suitable for conveying various powder, granular and small pieces of materials, such as cement, clay powder, coal powder, sand, grain, small pebbles, etc. The screw conveyor is especially suitable for bulk cement transportation from cement silo to mixer or from cement silo to batching machine in concrete mixing station.