Screw conveyor blades, also known as flighting, are the helical-shaped components that are attached to the central shaft of a screw conveyor. These blades play a crucial role in the operation of the screw conveyor, as they are responsible for moving and conveying materials along the length of the conveyor.
There are different types of screw conveyor blades, and choosing the right type depends on the specific application and the material being conveyed. Here are a few common blade types:
The spiral blades of screw conveyors have three forms: solid spiral surface, belt spiral surface and blade spiral surface.
1. Solid spiral blade: Full blade blade is directly welded or riveted on the shaft, suitable for dry powder or small particle materials.
2. Ribbon-shaped spiral blade: fixed on the shaft with a radial rod between the blade and the shaft, suitable for block materials with a certain viscosity.
3. Paddle-type propeller blades: Paddle-type design can blend and stir materials.
4. Serrated spiral blade: It has serrated grooves and plays the role of cutting, loosening, stirring and other mixing functions.
Screw conveyor blade types:
Shafted screw conveyor blades: Shafted blades are a common type of screw conveyor blades. They can be used for material transportation in three ways: horizontal, inclined, and vertical. They can transport loose materials and powdery or granular materials, such as malt powder. , rubber powder, soybeans, rapeseed, etc.
Shaftless screw conveyor blade: Shaftless blade is simply a spiral blade without a central axis. Its transportation method is mainly horizontal and small-angle tilt. It is mainly used to transport materials that are easy to wind and have strong viscosity, such as domestic garbage, sewage, etc. Mud etc.
Screw conveyor blade material:
Stainless steel material: not easy to rust, acid and alkali resistant, high temperature resistant, low temperature resistant, wear resistant, longer service life.
Carbon steel material: The screw conveyor blade has higher hardness and wear resistance, which can ensure its long-term use, but its thermal hardness will be poor, because when the working temperature is greater than 200°C, its hardness and The wear resistance will drop sharply.
Manganese steel material: high hardness, high strength, better wear resistance, suitable for conveying highly polished materials, but easy to rust.
Screw conveyor blades have the following characteristics:
Spiral shape: The blades are spiral-shaped and rotate around the central axis to form a continuous spiral channel. This design effectively propels material along the length of the conveyor.
Various Shapes and Types: Screw conveyor blades can come in a variety of shapes and types depending on different application requirements. For example, standard pitch blades, short pitch blades, cutting blades, ribbon blades and mixing blades, etc. Different types of blades are suitable for different material characteristics and conveying requirements.
Material selection: Screw conveyor blades are usually made of materials with good wear resistance to ensure their durability and service life. Common blade materials include carbon steel, stainless steel and wear-resistant alloys. The choice of material depends on the characteristics of the conveyed material, such as abrasion, temperature and chemical properties.
Customizability: Screw conveyor blades can be customized to meet specific application needs. For example, the pitch, diameter and blade shape of the spiral can be adjusted to adapt to the conveying requirements of different materials.
Wear resistance and easy cleaning: Since the screw conveyor blades are in direct contact with the material during the material transportation process, they need to have good wear resistance. In addition, the easy-to-clean design can reduce material residue and reduce the difficulty of maintenance and cleaning.
| OD (mm) | 94 | 94 | 120 | 120 | 125 | 125 | 140 | 160 | 200 | 440 | 500 | 500 |
| ID (mm) | 25 | 25 | 28 | 40 | 30 | 30 | 45 | 40 | 45 | 300 | 300 | 320 |
| Pitch (mm) | 72 | 100 | 120 | 120 | 100 | 125 | 120 | 160 | 160 | 400 | 460 | 400 |
| Thickness (mm) | 3.5 | 3.5 | 3.5 | 3.5 | 3.5 | 3.5 | 3.5 | 3.5 | 3.5 | 3.5 | 3.5 | 3.5 |
| OD (mm) | 160 | 160 | 200 | 200 | 250 | 250 | 320 | 320 | 400 | 400 | 500 | 500 |
| ID (mm) | 42 | 42 | 48 | 48 | 60 | 60 | 76 | 76 | 108 | 108 | 133 | 133 |
| Pitch (mm) | 120 | 160 | 160 | 200 | 200 | 250 | 250 | 320 | 320 | 400 | 400 | 500 |
| Thickness (mm) | 3.5 | 3.5 | 3.5 | 3.5 | 3.5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| OD (mm) | 140 | 140 | 190 | 190 | 240 | 240 | 290 | 290 | 290 | 290 | 370 | 370 |
| ID (mm) | 60 | 60 | 60 | 60 | 60 | 60 | 89 | 89 | 114 | 114 | 114 | 114 |
| Pitch (mm) | 112 | 150 | 133 | 200 | 166 | 250 | 200 | 290 | 200 | 300 | 300 | 380 |
| Thickness (mm) | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| OD (mm) | 60—3000 | Material | Carbon Steel | |||||||||
| ID (mm) | 30—2500 | Stainless Steel | ||||||||||
| Pitch (mm) | 60—3000 | |||||||||||
| Thickness (mm) | 6.0—60.0 | Wear Resistance Steel | ||||||||||
When selecting screw conveyor blades, there are several key factors to consider:
1. Material characteristics: First of all, we must understand the characteristics of the transported materials, including particle size, density, fluidity, humidity, viscosity, etc. Different material properties may affect blade selection. For example, for sticky materials, cutting blades or ribbon blades may be more suitable, while for materials that tend to accumulate, short-pitch blades may be more suitable.
2. Load and conveying capacity: Determine the required conveying capacity and expected load. This will affect the choice of blade size, pitch and diameter. For high load and large conveying capacity applications, larger diameter and tighter pitch blades may be selected.
3. Working environment conditions: Consider the working environment conditions of the screw conveyor, including temperature, humidity, corrosiveness, etc. Select appropriate blade materials according to the working environment, such as stainless steel, wear-resistant alloys, etc., to ensure that the blades can withstand harsh conditions and have a long service life.
4. Design requirements: Consider special design requirements, such as applications that require stirring or mixing materials, which may require the selection of mixing blades. If you need to reduce material residue or facilitate cleaning, you can choose blades with special shapes or cutting designs.
5. Consult professional manufacturers: Communicate and consult with professional screw conveyor manufacturers or suppliers. They can provide professional suggestions and customized solutions according to your specific needs. They have extensive experience and knowledge and can help you choose the most suitable blade type and configuration.
Xinxiang Dahan screw conveyor blade manufacturer has many years of experience and professional knowledge, and has accumulated rich experience in the design, manufacturing and application of screw conveyor blades. They understand the needs of different industries and can provide customized blade solutions. Ye Dahan Company currently supplies spiral blades with an outer diameter of up to 1250mm and a thickness of ≤60mm. Other specifications can be customized according to user requirements.
Address:China,Yanjin county forest park gate to the west 1000 meters north road.
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