Screw Conveyor

Product description
A screw conveyor is a mechanical device that uses rotating screw blades to push and convey materials along a fixed casing. Its structure is typically composed of a screw shaft, blades, casing, and drive device, etc. It can convey granular, powdery, and small block materials in horizontal, inclined, or vertical directions. It features a compact structure, small floor space, and a closed conveying process that is less prone to dust. It is widely applied in the material conveying scenarios of industries such as grain, chemical engineering, and building materials.
 
Working principle
The working principle of a screw conveyor is that the drive device rotates the screw shaft, causing the screw blades fixed on the shaft to form a continuous helical surface. When the helical blades rotate, the material is subjected to the thrust and friction of the blades as well as the blocking effect of the casing:
When conveying horizontally, the material slides forward along the bottom of the casing under the thrust of the blades, as if being "pushed forward by a spiral".
When conveying at an incline or vertically, the material, in addition to being subjected to thrust, also needs to overcome the influence of gravity. It adheres to the blades by the centrifugal force and friction generated from the rotation of the blades and moves upward along a spiral trajectory.
Throughout the entire process, the material is continuously pushed within the closed casing, achieving the transportation from the feeding port to the discharging port. The principle is similar to "a screw pushing an object", converting the spatial movement of the spiral structure into the linear displacement of the material.
 
Product characteristics
- Compact structure: Small footprint and flexible layout.
- Strong adaptability: It can convey various materials such as granules and powders.
- Good sealing performance: Prevents dust from spilling out and ensures that materials are less likely to be contaminated.
- Easy maintenance: Few transmission components and stable operation.
- Low cost: Low energy consumption and manufacturing and installation costs.
- Flexible layout: It can be conveyed horizontally, inclined or vertically.
 
Application industry
Chemical industry: It is used for transporting powdered or granular chemical raw materials such as soda ash, fertilizers, and pigments, and plays a role in the batching, mixing, and packaging of materials. ​
 
Grain and food processing: It is suitable for the transportation of materials such as wheat, corn, flour, and powdered sugar, and is commonly found in grain storage, feed processing, and food production lines. ​
 
In the field of building materials: It can convey building materials such as cement, coal powder and sand particles, and is widely used in concrete mixing plants, building materials storage and conveying systems. ​
 
Metallurgy and mining industry: It is used for transporting materials such as ore powder, coal powder, and coke, and realizes material transfer in processes such as ore screening and smelting pretreatment. ​
 
Environmental protection and agriculture: It can handle environmentally friendly materials such as sludge and straw pellets, or transport seeds, feed, etc. in agriculture, meeting the material transportation needs of different scenarios.
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