Based on the basic theory of modern magnetism, the technology of non-contact transmission of force or torque by applying the magnetic force generated by permanent magnetic materials or electromagnets
Based on the basic theory of modern magnetism, magnetic drive is a technology that uses the magnetic force generated by permanent magnetic materials or electromagnets to realize the non-contact transmission of force or torque (power). The device that realizes this technology is called magnetic drive, or magnetic driverMagnetic coupler, magnetic coupling, etc.
Chinese name
magnetic drive
Theoretical source
Based on the basic theory of modern magnetism
Application
Magnetic force produced by permanent magnetic materials or electromagnets
Advantages
It can avoid vibration transmission and realize smooth operation of the machine
Research has been carried out since the 1930s, but limited tomagnetic material And slow development;In the 1950s, in order to solve the problem of industrial pump leakage, the industry attached importance to developmentMagnetic drive centrifugal pump；In the late 1970s, along withRare earth permanent magnetic materialsThe development, especially the development of rare earth cobalt and neodymium iron boron, has rapidly improved and popularized the magnetic drive technology.
Advantages and disadvantages
Announce
edit
advantage
1. Transforming the dynamic seal of force shaft transmission power into static seal to realize zero leakage transmission of power;
2. It can avoid vibration transmission and realize stable operation of the machine;
3. There is no rigid connection between active parts and passive parts, with overload protection function;
4. There is a gap between the active part and the passive part, which is simple in structure and convenient for maintenance;
5. It can realize linear, rotary, spiral compound and other actions, such as two-dimensional and three-dimensional mechanical movement of displacement or angle.
6. Due to the good sealing performance of the transmission, its application in chemical industry and other places is conducive to environmental protection.
shortcoming
1. The existence of magnetic field interferes with the surrounding environment;
2. The force transmission process is prone to lag;
3. Compared with contact transmission, the efficiency is relatively low.
