The characteristics and application of magnetic coupling

XINLANCouplingIt is a new type of coupling developed in the late 70s to meet the needs of high-precision sealing technology.The driving shaft and the driven shaft connected by it are completely separated, and the non-contact connection between the two transmission shafts is realized through the magnetic force of the permanent magnet, which is impossible for mechanical couplings.At the same time, the permanent magnet coupling is a flexible coupling, which has good radial, axial and angular displacement compensation capabilities.Its main features are:
①Realize *seal.The driven part of the coupling is located inside the machine body, the shaft does not need to extend out of the machine case, all kinds of shaft seal devices are eliminated, and the variable seal is a static seal;
②It has good cushioning and vibration absorption capacity, compensates the displacement changes of the system, and improves the dynamic performance of the shafting system;
③Synchronous rotation within the rated torque, no frictional parts, long working life without repair;
④The cold and heat conduction between the isolation system and the prime mover;
⑤When the torque is overloaded, the two halves of the coupling (the main and the driven shaft) will slip to achieve overload protection, and it can also be used as a clutch.
 

XINLANCouplingOne of its successful applications is its combination with a magnetic pump.Not long ago, it was used as a valuable special product as a last resort, and now it has a wide range of applications.Most of the liquids in petrochemical, pharmaceutical, film, electroplating, nuclear power and other industries are corrosive, flammable, explosive, toxic, and valuable. Leakage brings waste of working liquid and environmental pollution; the vacuum semiconductor industry must prevent external gas Invasion; food, biology, and medicine must ensure the purity and hygiene of the medium.Permanent magnet couplings have found a place in these fields. It can be said that magnetic pumps are a big market for permanent magnet materials.
The permanent magnet coupling is applied to the valve, the stem does not pass through the bonnet, and the stuffing box is omitted, so it is called a fully enclosed permanent magnet drive valve without filler.Because the valve has no stuffing box, it can operate reliably for a long time; there is no frictional torque between the valve stem and the packing, and the rotation is labor-saving; the negative pressure operation has no outside air entering.All industrial valves such as globe valves, gate valves, ball valves, and butterfly valves can be transformed into fully enclosed valves.The reactor is a kind of mixing reaction equipment widely used in chemical plants. The stirring of liquid is often carried out under pressure. The reactants have a certain temperature, corrosiveness and volatility. Therefore, the sealing of the rotating shaft has become an important issue in the reactor.The reaction equipment with a stirrer applies magnetic transmission, which can avoid the oxidation and condensation of the medium in addition to the realization of the * sealing.