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Screw Conveyor is a commonly used continuous conveying equipment, usually composed of three materials: carbon steel, stainless steel and plastic. It uses spiral blades to move materials. It can be used to transport powdered, granular and block materials. Due to its simple structure, reliable and stable, it has become an important equipment in the production process.
Screw conveyor is a common conveying equipment, and its functions mainly include the following aspects:
Conveying materials: The main function is to convey materials from one place to another, which can be conveyed horizontally, inclined or vertically.
Mixing and stirring: During the conveying process, the rotation of the spiral blade mixes and stirs the materials, so that the materials can be mixed during the conveying process.
Controlling material flow: During conveying, we can control the discharge speed of the material by adjusting the spiral blade pitch speed.
Strong plasticity: Different models can be selected according to different working environments and material characteristics to complete the material processing.
Cooling treatment: We have cooling screw conveyors that can handle some high-temperature materials. The products produced can be cooled by screw conveyors and directly transported to designated locations.
Distributing materials: Screw conveyors can also be customized for multi-point unloading to distribute materials to different production lines or processes.
The advantages of screw conveyors are mainly reflected in the following aspects:
Low cost and high return: The structure of the screw conveyor is relatively simple, so its production cost is low and the price will be relatively favorable.
Reliable operation: Since there are fewer mechanical parts and the working principle is relatively simple, its operation is relatively reliable.
Closed conveying: Screw conveyors can achieve closed conveying, effectively prevent material leakage, and reduce pollution to the environment.
Versatility: Screw conveyors can also achieve material mixing, stirring, cooling and other tasks.
Screw conveyors can be divided into many types according to their design and purpose, including but not limited to the following:
U-type screw conveyor: U-type screw conveyor is a U-shaped trough conveyor, mainly used for horizontal or inclined conveying, and the U-shaped design can help prevent material accumulation and blockage.
Tubular screw conveyor: Tubular screw conveyor is a closed screw conveyor, mainly used for conveying dust and some liquid materials.
Shaftless screw conveyor: The spiral blades of the shaftless screw conveyor are hollow inside, which is suitable for conveying materials that are easy to agglomerate and have high viscosity, such as sludge, slurry, etc.
Cooling screw conveyor: The cooling screw conveyor can cool down the high-temperature materials. Through the cooling device during the conveying process, the temperature of the materials is reduced. It is suitable for conveying heat-sensitive materials.
Double screw conveyor: The double screw conveyor has two spiral blades, which can achieve higher conveying capacity and more uniform material mixing effect. It is suitable for occasions that require large-scale material conveying and mixing.
Vertical screw conveyor: The vertical screw conveyor is used for vertical conveying, which can convey materials from the bottom to the top or the opposite direction.
| Specifications | Spiral diameter (mm) | Pitch(mm) | Speed (r/min) | Transport capacity (m³/h) | Speed (r/min) | Transport capacity (m³/h) | Speed (r/min) | Transport capacity (m³/h) | Speed (r/min) | Transport capacity (m³/h) | Speed (r/min) |
| Small | 100 | 100 | 100 | 140 | 2.2 | 112 | 1.7 | 90 | 1.4 | 71 | 1.1 |
| 125 | 125 | 125 | 125 | 3.8 | 100 | 3.0 | 80 | 2.4 | 63 | 1.9 | |
| 160 | 160 | 160 | 112 | 7.1 | 90 | 5.7 | 71 | 4.5 | 56 | 3.6 | |
| 200 | 200 | 200 | 100 | 12.4 | 80 | 9.9 | 63 | 7.8 | 50 | 6.2 | |
| Medium | 250 | 250 | 250 | 90 | 21.8 | 71 | 17.2 | 56 | 13.6 | 45 | 10.9 |
| 315 | 315 | 315 | 80 | 38.8 | 63 | 30.5 | 50 | 24.2 | 40 | 13.4 | |
| 400 | 400 | 355 | 71 | 62.5 | 56 | 49.3 | 45 | 38.6 | 36 | 31.7 | |
| Large | 500 | 500 | 400 | 63 | 97.7 | 50 | 77.6 | 40 | 62.0 | 32 | 49.6 |
| 630 | 630 | 450 | 50 | 138.5 | 40 | 110.8 | 32 | 88.6 | 25 | 69.3 | |
| 800 | 800 | 500 | 40 | 198.5 | 32 | 158.8 | 25 | 124.1 | 20 | 99.3 | |
| Material size | Material abrasiveness | Recharge Factor | K | A | |||||||
| Powder | Non-abrasive Semi-abrasive | 0.35-0.4 | 0.0415 | 75 | |||||||
| Powder | Grindability | 0.25-0.3 | 0.0565 | 35 | |||||||
| Small pieces a<60mm | Non-abrasive Semi-abrasive | 0.25-0.3 | 0.0537 | 45 | |||||||
| Small pieces a<60mm | Non-abrasive Semi-abrasive | 0.2-0.25 | 0.0645 | 25 | |||||||
Screw conveyors usually consist of the following main components:
Spiral blades: The spiral blades are usually fixed on the spiral shaft and realize the material transmission by rotation.
Conveying pipeline: The pipeline used to fix and support the spiral blades, usually cylindrical.
Drive device: It includes a motor and a drive system to drive the spiral blades to rotate and realize the material conveying.
Support frame: The structure used to support the conveying pipeline and spiral blades to ensure the stability and safety of the conveyor.
Inlet and outlet: The inlet and outlet for materials, usually designed as an interface connected to the production line or material storage equipment.
Support bearing: Used to support and guide the spiral blades, reduce friction, and ensure the normal operation of the conveyor.
The working principle of the screw conveyor is to use the rotation of the spiral blades to push the material along a specific path. When the drive device drives the screw shaft to rotate, friction is generated between the spiral blades and the material, causing the material to be pushed forward and eventually fall into the designated discharge bin.
Screw conveyors are versatile conveying equipment suitable for various industrial fields and material conveying scenarios. The following are some common screw conveyor application scenarios:
Food processing: It can be used to convey food raw materials such as flour, powdered sugar, and grains to the next processing line.
Chemical raw material transportation: In the process of chemical production and processing, chemical raw materials are transported to the corresponding production status.
Metallurgical industry: Used to transport ore, coal, coke, and waste slag to metallurgical production.
Building materials industry: Convey cement, sand, stone, and concrete to cement plants, concrete mixing plants, and other places at different angles.
Waste treatment: Used to transport sludge, waste, recycled materials, etc. to waste treatment and resource recovery.
Cosmetics and pharmaceutical industries: Used to convey powder, granular raw materials or products to cosmetic production lines and pharmaceutical production processes.
Our screw conveyors can be customized according to your needs. You can provide your needs and we will provide you with professional services.
We have a professional research, production, sales, and after-sales service team. We have many years of production experience and a professional team, covering a variety of types, including U-type screw conveyors, tubular screw conveyors, shaftless screw conveyors, cooling screw conveyors, double screw conveyors, vertical screw conveyors, etc., which can meet the conveying needs of different customers.
NOTE: You can also send a message to us by this email sale@xxdahan.com, we will reply to you within 24 hours. Now tell us your needs, there will be more favorable prices!
