Working principle of hot water circulating pump: the magnet of brushless DC magnetic drive pump and the impeller are injected into a whole to form the rotor of the motor, and there is a direct injection-molded shaft sleeve in the middle of the rotor, which is fixed in the shell through a high-performance ceramic shaft. The stator and circuit board of the motor are encapsulated in the pump body with epoxy resin glue, and there is thin-wall isolation between the stator and the rotor, so it is completely sealed and does not need the traditional mechanical shaft seal. The torque of the motor is that the coil on the silicon steel sheet (stator) generates a magnetic field to drive the permanent magnet (rotor) to work. Magnetize the n (n is an even number) level magnet, so that the magnet part forms a complete coupled magnetic system. When the magnetic pole generated by the stator coil is opposite to the magnetic pole of the magnet, that is, the displacement angle φ = 0, the magnetic energy of the magnetic system is the lowest; When the magnetic poles rotate to the opposite poles, that is, when the displacement between the poles is φ = 2π/n, the magnetic energy of the magnetic system is the largest. After the external force is removed, because the magnetic poles of the magnetic system repel each other, the magnetic force will restore the magnet to the lowest state of magnetic energy. So the magnet moves and drives the magnetic rotor to rotate. Brushless DC water pump electronically commutates without using carbon brush. Both the magnet rotor and the stator silicon steel sheet have multistage magnetic fields. When the magnet rotor rotates at a certain angle relative to the stator, it will automatically change the direction of the magnetic poles, so that the rotor always maintains the same level of repulsion, thus making the brushless DC magnetic isolation pump have higher speed and efficiency.
Shanghai Equan Pump Industry Co., Ltd. is a company specializing in selling water pumps. The hot water circulating pump produced by the company has the characteristics of compact structure, high efficiency, environmental protection and energy saving, convenient installation, high temperature resistance, etc., and is widely used in: high-temperature hot water pressurized circulating transportation of boilers in energy, metallurgy, chemical industry, textile, paper making, hotels and restaurants, and circulating pump of urban heating system. Working temperature is t