Magnetic pump, a kind of magnetic actuator (magnetic coupling) to achieve non-contact torque transfer to the static seal instead of the dynamic seal, so that the pump to achieve complete leak-proof. As the pump shaft, the inner rotor is completely closed by the pump body and the isolation sleeve, thus completely solving the problems of running, running, dripping and leakage, and eliminating the leakage of flammable, explosive, toxic and harmful media through the pump seal in the refining and chemical industry Of the security risks, effectively guarantee the physical and mental health and safety of workers. Compared with the use of mechanical seal or packing seal centrifugal pump, the magnetic pump has the following advantages: 1. Pump shaft seal from the dynamic seal into a static, completely avoiding media leakage. 2. No need for independent lubrication and cooling water, reducing energy consumption. 3. Driven by the coupling into a synchronous drag, there is no contact and friction. Low power consumption, high efficiency, damping and vibration damping effect, reducing the impact of motor vibration on the pump and pump cavitation vibration on the motor. 4. Overload, the relative rotation of the rotor inside and outside, on the motor, pump protection. When the driven parts of the magnetic actuator operate under overload or the rotor is stuck, the main and driven parts of the magnetic actuator will automatically slide off to protect the pump. In this case, the permanent magnet on the magnetic actuator will generate eddy loss and magnetic loss under the action of the alternating magnetic field of the active rotor, causing the temperature of the permanent magnet to rise and the magnetic actuator to slip off.