Development History of Screw Conveyor

The development of screw conveyor is divided into two types: axial screw conveyor and shaftless screw conveyor [1]. The axial screw conveyor is composed of screw, U-shaped chute, cover plate, inlet and outlet and driving device. Generally, there are three types: horizontal type, inclined type and vertical type; The shaftless screw conveyor is changed from screw to shaftless screw, and a replaceable lining body is installed in the U-shaped groove. The structure is simple. The materials are input from the feed port and output from the discharge port after being pushed by the screw. The whole transmission process can be carried out in a sealed groove. Generally speaking, the screw conveyor we usually refer to refers to the screw conveyor with shaft type.

People have been looking for a better way to transport materials without shafts .

From the middle of the 17th century, aerial ropeways were used to transport bulk materials. In 1887, the screw conveyor was invented by Archimedes and later improved. It was widely used to transport bulk and solid materials in industry. Then, after a long development process, a series of screw conveyors were gradually developed, which made the screw conveyor have made great progress.

GX screw conveyor is an earlier screw conveyor, and it is also the earliest universal production equipment in China. It is mainly used to transport powdery, granular and small pieces of materials. It is not suitable to transport perishable, viscous and caking materials and large pieces of materials, because these materials are easy to stick to the screw and rotate with it, or block materials at the hanging bearing, which brings great inconvenience to the material conveying process. The main advantages of GX screw conveyor are energy saving and significant consumption reduction. Its head and tail bearings are moved outside the shell. It has good dust tightness, low noise, strong adaptability, convenient operation and maintenance, flexible layout of inlet and outlet, etc; The disadvantages are large power consumption, fast wear of parts and serious crushing of materials during transportation.

Ls type screw conveyor is a new generation of screw conveyor modified and designed on the basis of GX type conveyor. LS type screw conveyor is characterized by novel structure, reliable performance, advanced technical indicators, wide application range and remarkable energy saving and consumption reduction.