The cement screw conveyor uses a rotating screw to move the conveyed material along a fixed casing for conveying work. The direction of rotation of the screw conveyor shaft determines the direction of material transportation. Spiral conveyors have been widely used in various sectors, such as building materials, metallurgy, chemical industry, power, coal, machinery, light industry, grain and food industries. They are suitable for conveying powdery, granular, and small block materials, such as cement, coal powder, grain, fertilizers, ash, sand, coke, etc. It is not suitable to transport materials that are prone to deterioration, high viscosity, and easy to clump.

Spiral conveyors are mainly used to transport cement, fly ash, fine sand and other powder materials, as well as fine particulate dry materials. Commonly used in equipment for mixing plants, cement, and mines,

After long-term improvement and refinement in multiple occasions, the cement screw conveyor mainly has the following characteristics:

A. The continuous spiral blade made of high-strength steel has a pitch error of less than 5mm and a smooth blade surface after forming, which ensures uniform and stable material transportation, thereby improving the repeatability accuracy of material measurement.

B. The continuous spiral blades are made using cold work hardening surface cold rolling treatment, which increases the hardness and performance by about twice compared to ordinary blades, and the outer edge hardness can reach HB240.

C. The spiral blades of the front and rear sections have two types of pitches, sparse and dense, to prevent pipe blockage. Commonly known as’ eating less, vomiting faster ‘. The production of blades fills the tube during material transportation, and users can judge the quality of the screw conveyor by the suction flatness of the canvas cover at the feeding port of the screw conveyor.

D. The inner shaft of the screw machine is equipped with intermediate suspension bearings within the spacing to support the rotation of the inner shaft. The intermediate suspension bearing seat is mostly made of cast steel or cast aluminum material, with a single cantilever support body, which reduces the interruption distance of the blades at the connection between the front and rear sections, enlarges the material flow cross-section, and ensures smooth material flow.

E. The connection between the feeding port of the screw conveyor and the cement silo port can be divided into two forms: rigid connection with ball joint flange and flexible connection with hanging and canvas. The frequency of disassembly and assembly of visual devices determines the interface form.

F. The design of the front support body ensures that during normal operation, the internal shaft of the screw is subjected to tensile force, which is borne by the thrust bearing inside the front support to prevent the gearbox and the middle suspension shaft seat from being compressed, and to avoid the phenomenon of sweeping caused by the pressure on the bolt shaft.