1. Feed machinery equipment accessories nylon coupling product introduction

In the transmission system of feed machinery equipment, nylon coupling as an important connection component plays an indispensable role. It can effectively transmit torque, compensate the relative displacement between shafting, and has good shock absorption and buffering performance, which has significant advantages in ensuring the stable operation of feed production equipment and improving the reliability and service life of equipment.

2. Type of structure

Elastic pin coupling

Nylon elastic pin coupling is a more common type of structure. It is mainly composed of two half couplings and nylon pins. The two half couplings are respectively installed at the ends of the two shafts to be connected, and the nylon pins are connected through the corresponding holes in the half couplings. The coupling of this structure has the characteristics of simple structure and convenient manufacture. Nylon pin can use its elastic deformation to compensate a certain axial displacement, radial displacement and angular displacement, and play a role in cushioning and damping when transmitting torque. In feed production equipment, such as small feed mixers or conveying equipment, when there is a small displacement deviation between shafting and the torque requirement is not particularly high, nylon elastic pin coupling can meet the basic transmission needs, and its cost is relatively low, installation and maintenance is relatively easy.

Flexible coupling with plum shape

The quince-shaped elastic coupling is named for its unique quince-shaped elastomer. The coupling consists of two half couplings with convex claws and a plum shaped nylon elastomer. The plum-shaped elastomer is embedded between the convex claws of the semi-coupling, which transmits torque through compression and deformation of the elastomer and compensates for various displacements of the shafting. The plum-shaped elastic coupling has a multi-lobe plum-shaped elastic body that can provide elastic deformation in multiple directions, so it has better performance in compensating displacement. In the feed mill or granulator and other equipment, due to the working process may produce large vibration and impact, the displacement change between the shafting is more complex, the plum shaped elastic coupling can effectively absorb and buffer these vibration and impact, protect the transmission parts of the equipment, while ensuring the stable transmission of torque, improve the operating stability and reliability of the equipment.

Diaphragm coupling (partly nylon)

Diaphragm couplings are usually composed of metal diaphragm groups, semi-couplings and connecting bolts, but in some special designs or application scenarios, nylon diaphragm or composite nylon coating on metal diaphragm are also used. Nylon diaphragm or coating can give the coupling better elasticity and shock absorption. The coupling uses the elastic deformation of the diaphragm to compensate the displacement of the shafting, and has high precision torque transmission capacity and high speed adaptability. In large, high-speed feed production equipment, such as the spindle drive system of large feed expander, the diaphragm coupling with improved nylon material can ensure accurate torque transmission at the same time, better cope with the vibration and shaft deviation during high-speed operation, reduce the occurrence of equipment failures, and ensure the efficient and stable operation of the production line.

3. Material characteristics

The basic properties of nylon

Nylon, or polyamide, is a kind of high performance engineering plastic. It has good mechanical properties, such as high strength, hardness and toughness. The strength of nylon can meet the torque transmission requirements of the general feed machinery and equipment coupling, and its hardness makes the coupling maintain good shape stability during the working process, while the toughness makes it have a certain impact resistance, and it is not easy to break when bearing the instantaneous impact load. In addition, nylon also has excellent wear resistance, in the process of long-term friction with other components, can maintain a low wear rate, extend the service life of the coupling. For example, in feed conveying equipment, nylon couplings need to work with chains, sprockets and other components for a long time, and their wear resistance can effectively reduce component damage and equipment failure caused by friction.

Corrosion resistance

Nylon has excellent corrosion resistance and can resist the attack of many chemicals. In the feed production environment, there may be a variety of acid and alkali substances, moisture and microorganisms, nylon coupling can maintain stable performance in such an environment, not be corroded or damaged. This feature makes nylon couplings particularly suitable for aquatic feed or pet feed production equipment, where hygiene and corrosion resistance are required. For example, in the process of aquatic feed processing, feed raw materials and production environment often have high humidity and a certain salt, nylon coupling can effectively prevent the deterioration of equipment performance caused by corrosion, to ensure the quality and safety of feed production.

self-lubricity

The self-lubricity of nylon is another important material property. In the working process of the coupling, the friction coefficient between nylon parts and other metal parts is low, and there is no need to add a large amount of additional lubricating oil to achieve relatively smooth relative movement. This not only reduces the amount of lubricating oil used and maintenance costs, but also avoids potential risks to the quality of feed products due to leakage or contamination of lubricating oil. In some feed production workshops with strict hygiene requirements, such as the production of baby food grade pet feed equipment, the self-lubrication of the nylon coupling can ensure the clean operation of the equipment and meet high standards of hygiene requirements.

Light weight

Compared with traditional metal couplings, nylon couplings have obvious advantages of lightweight. This allows the equipment to reduce the impact of inertial forces during operation, especially when rotating at high speed, reduce energy consumption, and improve the overall efficiency of the equipment. At the same time, the lighter weight also facilitates the installation and disassembly of the coupling, which can save labor and time costs during the maintenance and overhaul of the equipment. In some small feed machinery equipment or special requirements for the weight of the equipment, such as mobile feed processing equipment or installation space limited workshop, the lightweight characteristics of nylon couplings make it an ideal choice.

4. Performance characteristics

Good shock absorption and cushioning performance

The elastic nylon parts of the nylon coupling effectively absorb and dissipate the vibration and shock energy generated during the operation of the equipment. In the feed crusher, when the material is crushed, there will be a large impact force, and the nylon coupling can buffer these impacts, prevent its transmission to the motor and other transmission components, and protect the equipment from damage. In the feed mixer, due to the vibration caused by the uneven distribution of materials may occur during the mixing process, the nylon coupling can also play a damping role, reduce the noise and wear of the equipment, and improve the smooth operation and comfort of the equipment. For example, through experimental tests, it was found that the vibration amplitude of the feed mixer using nylon coupling during operation was reduced by about 30%-50% compared with the equipment using traditional metal coupling, effectively extending the service life of the equipment.

Precise torque transfer

Although nylon is an elastic material, under reasonable design, nylon couplings can transmit torque within a certain accuracy range. It transfers power from one shaft to the other through the tight fit and friction between the nylon parts and the metal half-coupling. In the feed pelletizing machine and other equipment requiring high torque transmission accuracy, nylon coupling can meet the requirements of the production process, ensuring that the ring die and press roller of the pelletizing machine work with precise speed and torque to produce feed particles with uniform quality and regular shape. For example, in some high-precision feed pelleting production lines, specially designed nylon couplings are used, and the torque transmission error can be controlled within ±3%, ensuring the quality stability of the product.

5. FAQ

Q: What is the main material of nylon coupling?

A: Nylon couplings are usually made of high-strength nylon materials, such as nylon 6, nylon 66, etc. These materials have good wear resistance and impact resistance.

Q: What are the surface treatment processes for nylon couplings?

A: Common surface treatment processes for nylon couplings include polishing, plating and coating. These processes can improve the hardness and wear resistance of the surface and extend the service life.

Q: How to ensure the transmission efficiency of nylon coupling?

A: In order to ensure the transmission efficiency of the nylon coupling, the coordination accuracy between the shaft and the nylon coupling should be ensured, the lubrication system should be regularly checked and maintained, and the lubricating oil should be kept clean and appropriate.

Q: What are the special requirements for nylon couplings in different application scenarios?

A: In different application scenarios, nylon couplings may have different special requirements. For example, nylon couplings used in high temperature environments need to have high temperature resistance; For use in corrosive environments, corrosion-resistant materials are required.