Compact-structure type magnetic coupling driving motor

Abstract

The invention provides a compact-structure type magnetic coupling driving motor. The magnetic coupling driving motor comprises a motor shell, and an inner stator, an inner rotor and an inner rotary shaft positioned in the motor shell, wherein the inner rotor adopts a cylindric shape; the two ends of the inner rotor are connected with an inner rotor front end bearing and an inner rotor back end bearing respectively; inner rotor inner magnets and inner rotor outer magnets are uniformly distributed on the inner and outer side walls of the inner rotor; the inner rotary shaft is arranged in the inner rotor in a sleeving manner; the inner rotary shaft coincides with the axle wire of the inner rotor; the two ends of the inner rotary shaft are connected with an inner rotary shaft front end bearing and an inner rotary shaft back end bearing respectively; inner rotary shaft permanent magnets corresponding to the inner rotor inner magnets of the inner rotor are also fixed on the inner rotary shaft; and the inner rotor and the inner rotary shaft are subjected to physical isolation. The compact-structure type magnetic coupling driving motor has the beneficial effects of capability of satisfying flexible connection requirement, skillful layout, compact structure, high magnetic field efficiency of the permanent magnets, high sealing property, and capability of saving the axial space of the motor.

Description

technical field [0001] The invention belongs to the technical field of magnetic coupling drive motors, and in particular relates to a magnetic coupling drive motor with a compact structure. Background technique [0002] The magnetically coupled motor is a transmission motor that utilizes the same-sex repulsion and opposite-sex attraction of magnets for magnetic field coupling. It can physically isolate the rotor, stator and load of the motor to achieve zero leakage in harsh environments. Generally, a magnetically coupled motor is mainly composed of three basic parts: a copper stator, a permanent magnet rotor, and a magnetic coupling unit. The magnetic coupling motor can realize the physical isolation between the motor parts and the load, flexible connection and prevent the motor from stalling, and avoid the dynamic seal, and the sealing reliability is very high. It has been widely used in the chemical, petroleum, toxic and harmful liquid pipeline transportation industries. ...

AI Technical Summary

Problems solved by technology

The device has a pump chamber and a motor chamber separated by a partition wall, and the motor chamber is equipped with: a stator, a rotor, and a driving magnet; the pump chamber is equipped with an impeller with a driven magnet. In this device, the drive The magnet and the driven magnet are in the form of radial ring permanent magnets, and its magnetic coupling unit increases the axial dimension of the pump, which limits the installation space of the magnetic coupling pump

At the same time, the permanent magnets of the motor rotor and the permanent magnets for magnetic coupling are arranged separately, and the utilization efficiency of the magnetic field is low

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