With the aggravation of the environmental protection situation, more and more chemical enterprises are required to use magnetic pumps to transport various corrosive materials. As we all know, magnetic pumps cannot idle. As long as they idle for a few minutes, the friction between the shaft and the shaft sleeve inside them will produce extremely high temperature, quickly wear the graphite bearings and shafts, and even burn the inner rotor.In recent years, domestic magnetic pump manufacturers claim to be able to do anti idling magnetic pumps. Is it true? Does idling magnetic pump really work? Can it really idle for a long time?Today, I would like to introduce some details to you. I hope it will be helpful to users.At present, there are two kinds of idling magnetic pumps produced by some domestic manufacturers. One is that ceramic rolling bearings are used to replace the original sliding bearings. When the magnetic pump is short of liquid, the friction coefficient of the rolling bearings is low and the heat generated is relatively small. Therefore, the magnetic pump can be idling without burning the bearings and rotors. The disadvantages of this structure are: it cannot carry high torque, materials with higher density cannot be transported normally, and ceramic bearing balls are fragile.The other is the LHC idling fluorine lined magnetic pump developed by Green Ring. This magnetic pump is a complete upgrade of the main shaft and shaft sleeve on the original traditional basis. It is filled with nano carbon powder technology to achieve the function of idling and self-lubricating. Relatively speaking, the latter is more in line with idling requirements in terms of technology and practical theory.