How to prevent material leakage or contamination in the sealing system of industrial double planetary mixer

Industrial double planetary mixers are widely used in the processing of materials with high viscosity, high solid content and extremely high cleanliness requirements. As a key component of the equipment, the sealing system is directly related to the safety of the material, the operating stability of the equipment and the maintenance cost. The efficient sealing design can effectively prevent material leakage and environmental pollution, and ensure the continuity of the production process and the stability of product quality.

Double mechanical seal structure ensures high-strength sealing
Industrial double planetary mixers usually adopt a double mechanical seal system to form dual protection of the main seal and the auxiliary seal. The mechanical seal achieves air-tight and liquid-tight isolation between the rotating shaft and the equipment housing through the precise matching of the sealing ring. The main sealing ring bears the material pressure to ensure stable contact between the sealing surface and prevent material leakage. The auxiliary sealing ring provides backup protection when the main seal fails to avoid environmental pollution. The double sealing structure greatly improves the safety and reliability of the equipment and meets the needs of efficient sealing under various complex working conditions.

High-performance sealing materials are corrosion-resistant and wear-resistant
The sealing rings and sealing gaskets are made of high-performance materials such as fluororubber (FKM), polytetrafluoroethylene (PTFE), silicon carbide (SiC) and cemented carbide. These materials have excellent corrosion resistance, wear resistance and high temperature resistance, and can adapt to harsh environments such as strong acid, strong alkali, high temperature and high pressure. The selection of materials ensures that the mechanical seal maintains stable sealing performance in long-term operation, reduces maintenance frequency and replacement costs, and effectively prevents material leakage and pollution.

Magnetic sealing technology achieves contactless sealing
Some high-end industrial double planetary mixers are equipped with magnetic sealing systems, which use magnetic coupling to achieve contactless sealing. Magnetic seals do not rely on traditional mechanical contact sealing rings, avoiding the risk of wear and leakage caused by friction. The sealing area is completely isolated by the magnetic field, effectively preventing the leakage of high-viscosity, flammable and explosive and toxic materials, and ensuring safe operation. Magnetic seals have the characteristics of long life and maintenance-free, which improves the stability and operating efficiency of the equipment.

Precision bearing and sleeve design reduces sealing load
The bearings and sleeves of the mixing shaft are precisely designed to ensure the reasonable distribution of axial and radial forces and reduce the load on the sealing ring. High-precision bearings reduce shaft vibration and eccentricity, and avoid failure of the sealing surface due to uneven wear. The sleeve material has been specially treated to improve wear resistance and corrosion resistance, extending the overall service life of the equipment. Good matching of bearings and sleeves effectively ensures the stable operation of the sealing system and prevents leakage caused by mechanical abnormalities.

Combination of static seals and dynamic seals to achieve all-round protection
The sealing system consists of two parts: static seals and dynamic seals. The static seal is mainly located at the connection between the equipment housing and the mixing barrel, and uses high-performance sealing gaskets or O-rings to prevent material leakage along the interface. The dynamic seal focuses on the contact surface between the rotating shaft and the sealing chamber, and isolates the material from the outside world through mechanical seals or magnetic seals. The combination of the two forms a multi-layer sealing barrier to ensure that the sealing system can effectively block material leakage and external contamination under various operating conditions.

The sealing chamber design is conducive to leak detection and leakage recovery
The sealing system is designed with a special sealing chamber, which is equipped with a leak detection port and a leakage recovery channel. If there is a slight leak on the sealing surface, the leak will be guided into the sealing chamber in time to avoid spreading to the outside of the equipment. The leak can be quickly detected by the monitoring system, which is convenient for maintenance personnel to check and deal with it in time. The design of the sealing chamber effectively reduces the impact of leakage on the production environment and operators, and improves the level of equipment safety management.

Combining jackets with environmental protection to ensure clean production
The sealing area of ​​the double planetary mixer is often equipped with a jacket structure to support heating or cooling. The temperature control jacket avoids aging and performance degradation of the sealing material caused by drastic temperature changes in the sealing area, ensuring long-term stability of the sealing surface. The jacket can also prevent the material from crystallizing or depositing in the sealing area, reducing the risk of leakage caused by blockage. In line with the design requirements of the clean room level, the sealing system ensures that the production environment is dust-free and pollution-free, meeting strict quality standards such as GMP.