Also known as auger screw conveyor, mineral, animal feed, food, construction is the most extensive use of a delivery tool, formal distinction from the conveyor screw conveyor can be divided into a shaft and shaftless screw conveyor, from the conveying direction angle screw conveyor can be divided into horizontal and vertical screw conveyor screw conveyor, the distinction can be divided into U-shape and tubular screw conveyor screw conveyor. Shaft screw conveyor is suitable for non-sticky powder materials and small particles of material (such as cement, lime, coal, grain, etc.) delivery, shaftless screw conveyor is suitable for easy wrapping sticky materials (such as garbage, sewage mud, biomass) delivery. Shaft screw conveyor works rotation helical blade passage of the material spiral conveyor, the material does not rotate together with the helical blade force is the material of their own weight and screw conveyor housing on resistance of materials produced. Steel screw conveyor is made of steel, transport suitable for high temperature powder or solid particles of chemicals and building materials. I produced the LS-type conveyor screw conveyor not perishable, viscous, easy caking materials because these materials in the delivery process will bond on the spiral, and without moving forward or rotate with the screw hanging bearing material formed at the product plug, leaving the LS-type screw conveyor is not working properly. LS-type screw conveyor screw diameters from 200 mm to 500 mm, a total of five sizes, lengths from 4 m to 70 m, at intervals of 0.5 meters to a file, when the selection of standard nominal length, special needs in the optional section presented separately. Given the range of applications and features LS-type screw conveyor, the user at the time of selection, should take full account of the use of the environment and transport of materials according to the situation, balanced, reasonable selection, in order to avoid unnecessary trouble and loss.