what is a Screw Conveyor
2025-11-15 12:08:43
By : root
A
screw conveyor is a mechanical device used to
transport bulk materials (such as powders, granules, or small lumps) horizontally, inclinedly, or vertically. It relies on a rotating helical screw blade to push materials forward along a fixed trough or pipe.
- The screw blade is driven by a motor and reducer to rotate continuously in the trough/pipe.
- When rotating, the blade generates axial thrust, which pushes the material in contact with it to move from the feed end to the discharge end.
- The trough/pipe acts as a closed or semi-closed container to prevent material leakage and ensure stable transportation.
- Versatile material adaptation: Suitable for dry/wet, viscous/non-viscous bulk materials (e.g., cement, grain, coal powder, sludge).
- Flexible installation: Can be installed horizontally, inclined (usually ≤45°), or vertically, saving space.
- Simple structure: Consists of screw blade, trough/pipe, motor, reducer, and bearing, with low maintenance costs.
- Controllable conveying capacity: Adjust the conveying speed and output by changing the motor speed or screw pitch.
Widely used in industries such as agriculture, mining, building materials, chemical engineering, food processing, and environmental protection. For example:
- Transporting grain and feed in agriculture.
- Conveying coal powder and ore particles in mining.
- Delivering cement and sand in construction.
- Transferring chemical raw materials and food additives in the chemical and food industries.
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