Classification and structural characteristics of LS screw conveyor

（1） Application scope and characteristics

Spiral Conveyor; It is a conveying equipment widely used in chemical, building materials, grain and other sectors, mainly used for conveying powdery, granular and small block materials. It is not suitable for conveying materials that are prone to deterioration, viscosity, and clumping.

Compared with other conveying equipment, spiral conveying has the advantages of simple structure, small cross-sectional size, good sealing performance, the ability to load and unload materials at multiple points in the middle, convenient operation, and low manufacturing cost. Its disadvantages are severe wear and tear of mechanical parts, low conveying capacity, high power consumption, and easy breakage of materials during transportation.

（2） Classification and structural features

As shown. The solid spiral surface is called the S method, and its spiral pitch GX type is a blade, suitable for conveying powdered and granular materials. Belt type helical surface, also known as D method, has a helical pitch equal to the diameter of the helical blades, and is suitable for conveying powdered and small materials. The application of blade helical surfaces is relatively limited, mainly used for conveying materials with high viscosity and compressibility. During the conveying process, mixing and other processes are simultaneously completed, and the helical pitch is about the diameter of the helical blade.

(c) Belt spiral surface type

(b) Spiral surface type of blade

(a) Solid spiral surface type

③ Spiral Conveyor; The types include horizontal fixed screw conveyor and vertical screw conveyor. Horizontal fixed screw conveyor is a type of conveyor. Vertical spiral conveyor is used for short distance materials, with a conveying height generally not exceeding 8m. The spiral blades are of the spiral surface type, and it has horizontal spiral feeding according to the feeding pressure.

④ At the material outlet end of LS, GLS, and GX screw conveyors, one reverse spiral plate should be installed to block the end bearings with powder material. There is no spiral plate at the upper end of the outlet pipe.

⑤ The screw conveyor consists of three main parts: the screw machine body, the inlet and outlet, and the driving device.