A pump is a machine that transports or pressurizes liquid. It transfers the mechanical energy or other external energy of the prime mover to the liquid, so that the liquid energy is increased, mainly used to transport liquids including water, oil, acid lye, emulsion, suspension emulsion and liquid metal, etc., can also transport liquids, gas mixtures and liquids containing suspended solids.

The magnetic pump consists of three parts: a pump, a magnetic drive and a motor. The magnetic drive is composed of an external magnetic rotor, an internal magnetic rotor and a non-magnetic isolation sleeve. When the motor drives the external magnetic rotor to rotate, the magnetic field can penetrate the air gap and non-magnetic substances, drive the inner magnetic rotor connected with the impeller to rotate synchronously, achieve non-contact transmission of power, and transform the dynamic seal into a static seal.

Because the pump shaft and the inner magnetic rotor are completely closed by the pump body and the isolation sleeve, the problem of “running, taking, dripping and leaking” is completely solved, and the safety hazard of flammable, explosive, toxic and harmful media leaking through the pump seal in the refining and chemical industry is eliminated.

The technical parameters to measure the performance of the pump are flow, suction, head, shaft power, water power, efficiency, etc. According to different working principles can be divided into positive displacement pump, vane pump and other types. Positive displacement pump is the use of its studio volume changes to transfer energy; Blade pump is the use of rotary blade and water interaction to transfer energy, centrifugal pump, axial flow pump and mixed flow pump and other types. Centrifugal pump according to the control principle can be divided into AC pump, brushless DC pump, brushless DC motor pump, brushless DC magnetic isolation pump.

The definition of the pump: usually lift the liquid, transport the liquid or increase the pressure of the liquid, that is, the mechanical energy of the prime mover into liquid energy to achieve the purpose of pumping the liquid machine collectively referred to as the pump.