Twin-shaft paddle mixer for feed production: modular design and optimization of wear resistance

The paddle assembly of a twin-shaft paddle mixer usually adopts a modular design, consisting of a clamp, a paddle rack and a wear-resistant carbide strip. This design not only simplifies the maintenance process of the equipment, but also improves the flexibility and adaptability of the equipment, enabling it to be adjusted according to material characteristics and mixing requirements.

1. Tight integration of clamp and paddle rack
As a key component connecting the paddle rack and the mixing shaft, the clamp is usually fixed by high-strength bolts or welding to ensure that the paddle maintains a stable operating state when rotating at high speed. The paddle rack is a frame that supports the wear-resistant carbide strip. Its design needs to consider the stiffness and strength of the paddle, as well as the flow characteristics of the material during the mixing process. By optimizing the structure of the paddle rack, more efficient material mixing can be achieved, while reducing the deformation and wear of the paddle in long-term use.

2. Application of wear-resistant carbide strips
The wear-resistant carbide strips are the core components of the paddle assembly. They are usually made of high-hardness and high-wear-resistant alloy materials, such as tungsten carbide and silicon carbide. These materials have excellent wear resistance and can maintain a long service life in direct contact with the material. The wear-resistant carbide strips are fixed to the paddle frame by welding or bolting to form a complete paddle structure. In feed production, there are various types of materials, including grains, protein sources, minerals, vitamins, etc., which may cause varying degrees of wear on the paddles during the mixing process. The use of wear-resistant carbide strips effectively reduces the damage to the paddles caused by material wear and extends the service life of the equipment.

3. Advantages of modular design
The modular design makes the paddle assembly easy to disassemble and replace, reducing the difficulty of maintenance and downtime. When the paddle needs to be replaced due to wear or damage, only the damaged wear-resistant carbide strip or the entire paddle frame needs to be removed without disassembling the entire mixing shaft. This not only improves maintenance efficiency, but also reduces losses caused by downtime. In addition, the modular design also allows the shape and material of the paddle to be adjusted according to the material characteristics and mixing requirements. For example, for materials with greater viscosity, wear-resistant carbide strips with larger angles and rougher surfaces can be used to increase the shear force and mixing effect between materials. For fragile or easily abrasive materials, softer and more wear-resistant alloy materials can be selected to reduce damage to the materials.

Wear resistance is one of the important indicators to measure the quality of the paddle assembly of a twin-shaft paddle mixer. By optimizing the material, structure and manufacturing process of the wear-resistant carbide strips, the wear resistance of the paddles can be significantly improved, the service life of the equipment can be extended, and production efficiency can be improved at the same time.

1. Material optimization
The material selection of the wear-resistant carbide strip has a decisive influence on its wear resistance. When selecting alloy materials, factors such as the hardness, toughness, corrosion resistance and cost of the material need to be comprehensively considered. High-hardness materials usually have better wear resistance, but poor toughness and are easy to break; while materials with better toughness may have insufficient wear resistance. Therefore, it is necessary to select the most suitable alloy material according to the material characteristics and mixing requirements. For example, for materials containing a large number of hard particles, tungsten carbide alloy materials with higher hardness and stronger toughness can be selected; while for soft materials that are easy to wear, silicon carbide alloy materials with better toughness and moderate wear resistance can be selected.

2. Structural optimization
The structural design of wear-resistant carbide strips also has an important influence on their wear resistance. By optimizing the shape, size and arrangement of alloy strips, the flow characteristics of materials during mixing can be improved and the wear of materials on the blades can be reduced. For example, alloy strips with variable thickness and angle can be designed to meet the mixing requirements of different materials; multiple layers of alloy strips can also be superimposed to increase the thickness and strength of the blades and improve their wear resistance.

3. Manufacturing process optimization
The manufacturing process also has an important influence on the wear resistance of wear-resistant carbide strips. During the manufacturing process, process parameters such as the composition, smelting temperature and cooling rate of the alloy material need to be strictly controlled to ensure that the alloy strips have excellent mechanical properties and wear resistance. In addition, advanced welding or bolting technology is also required to ensure the close combination between the alloy strips and the blade frame to avoid loosening or falling off during use.