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Zhuji Electric Technology Co., Ltd.
Contact: Manager Liu
Mobile: 15968565201 (WeChat same number)
Mobile: 18072201129
Add: No. 15th, Zhuji Road, Zhuji, Shaoxing, Zhejiang Province, Shaoxing, Zhejiang Province

Industry knowledge
Principle of folding magnetic coupling
Edit:Zhuji Electric Technology Co., Ltd.   PublicDate:2019-01-26

Magnetic transmission couplings Mainly have 2 kinds of structures: planar magnetic transmission couplings and coaxial magnetic transmission couplings. The magnet is called planar magnetic drive coupling with axial magnetization and coupling magnetic poles into axial configuration. Magnets are called coaxial magnetic transmission couplings with radial magnetization and coupled magnetic poles in radial configurations

The coaxial magnetic drive coupling is used as an example to illustrate its working principle. The magnetic drive coupling consists of an external magnet, an inner magnet and an isolation cover. The inner and outer magnets are composed of permanent magnets along the radial magnetization and the opposite magnetic direction, the permanent magnet is arranged alternately along the circumference direction with different polarity, and fixed on the low carbon steel steel ring to form a magnetic circuit breaker. The isolation hood is made of high resistance materials that are non-ferrite (and thus non-magnetic) and generally uses austenitic stainless steel. At rest, the N pole (S pole) of the outer magnet is attracted to each other and in a straight line from the S pole (N pole) of the inner magnet, at which point the torque is zero, as shown in Figure 3. When the outer magnet rotates under the power machine, the initial inner magnet is still in a static state due to the friction force and the resistance of the transmission parts, when the outer magnet begins to shift to a certain angle relative to the inner magnet, because of this angle, the N pole (S pole) of the outer magnet has a pull effect on the S pole (N pole) of the inner At the same time, the N pole (S pole) of the outer magnet has a push effect on the front N pole (S pole) of the internal magnet, which makes the inner magnet have a tendency to rotate with each other, which is the working principle of the push-pull magnetic circuit of the magnetic coupling. When the N pole (S pole) of the outer magnet is located just between the 2 poles (S pole and N pole) of the inner magnet, the push tension is maximized, as shown in Figure 4, which leads to the rotation of the inner magnet. During the transmission process, the isolation cover separates the outer magnet from the inner magnet, and the magnetic line passes through the isolation cover to transmit the power and motion of the outer magnet to the inner magnet, thus realizing the contactless seal transmission.

With the development of magnetic materials and the emergence of new magnetic materials, magnetic transmission couplings will be more and more torque transmission, the volume will be more and more small, its application range will be more and more extensive, in addition to pumps and reaction kettles, valves, hydraulic cylinders and cylinders, as well as some other situations that need to solve the problem of dynamic seal leakage can be applied. It can be expected that the magnetic drive coupling will have a very broad market prospects.

MagneticMagnetic couplingsProfessional standards have been formed in industrially developed countries, and stereotyped products are sold on the international market.