LS screw conveyor is suitable for horizontal or inclined (<20°) conveyance of powdery, granular and small lump-size materials. The conveying length can reach 90m, and the temperature of material can reach 200°C. This machine is featured with novel structure and advanced technical indices, and has advantages of good sealing performance, small resistance to materials, good wear resistance, low noise of complete machine, etc. It is widely used in various industrial sectors.