Working Principle
The motor drives the screw to rotate, and the rotating screw blades push the material for conveying. The force that prevents the material from rotating together with the screw blades is the material's own weight and the frictional resistance of the screw conveyor housing to the material. Under the axial push of the screw blades, the material moves forward along the bottom of the trough.
Structural Composition
• Screw Machine Body: Including head bearings, tail bearings, suspension bearings, screw, housing, cover plate, and base, etc.
• Inlet and Outlet Ports: Responsible for material input and output, with various forms such as flange connection and cloth connection.
• Drive Device: Composed of an electric motor, reducer, coupling, and base, providing power for the rotation of the screw shaft.
Type Classification
• By Conveying Form:
Shafted screw conveyor: Suitable for non-viscous dry powder materials and small granular materials, such as cement, fly ash, etc.
Shaftless screw conveyor: Suitable for conveying viscous and easy-to-wind materials, such as sludge, biomass, etc.
• By Appearance:
U-shaped screw conveyor: The trough is U-shaped, with large material carrying capacity.
Tubular screw conveyor: Adopts a circular pipeline, with better sealing performance, suitable for conveying easy-to-fly, toxic and harmful materials.
Product Features
• Advantages: Simple structure and low cost; reliable operation and easy maintenance management; compact size and small floor space; capable of sealed conveying to reduce environmental pollution; convenient loading and unloading (horizontal screw conveyors can be loaded and unloaded at any point on the conveying line); can convey in reverse or simultaneously in both directions; can perform operations such as mixing and stirring on materials during the conveying process.
• Disadvantages: Relatively high unit energy consumption; materials are prone to crushing and wear during conveying, and the screw blades and trough are also severely worn; not suitable for conveying perishable, viscous, large-block, and easy-to-caking materials.
Application Fields
Widely used in various national economic sectors such as the food industry, building materials industry, chemical industry, machinery manufacturing industry, and transportation industry. It is mainly used to convey various powdery, granular, and small lumpy materials, such as grains, cement, chemical fertilizers, coal, etc., and can also be used to transport packaged items.
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