Overview of Magnetic Couplings
The magnetic drive coupling is a non-contact coupling. It is generally composed of two magnets inside and outside. The two magnets are separated by an isolation cover in the middle. The inner magnet is connected with the driven part, and the outer magnet is connected with the power part. In addition to the elastic coupling's function of buffering and absorbing vibration, the magnetic drive coupling has the biggest feature that it breaks the structure of the traditional coupling and adopts a new principle of magnetic coupling to realize the non-passing between the driving shaft and the driven shaft. Direct contact can transmit force and moment, and can transform the dynamic seal into a static seal to achieve zero leakage. Therefore, it is widely used in occasions with special requirements for leakage.
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Couplings are widely used in various general machinery to connect two shafts to rotate together to transmit torque and motion. Traditional couplings must transmit torque through the mutual connection of the driving shaft and the driven shaft. The structure is complex, the manufacturing precision is high, and the components are easily damaged when overloaded. Especially when the driving shaft and the driven shaft are working in two different media that need to be isolated from each other, a sealing element must be used for dynamic sealing, so that there is a problem of either increasing the rotation resistance to ensure reliable sealing, or leaking due to inadequate sealing. . In addition, with the wear and aging of the sealing elements, leakage will be aggravated, especially in a system where harmful gases (hazardous liquids) exist. Once leaked, it will pollute the environment and endanger lives.
Traditional couplings are all contact couplings, which can be divided into elastic couplings and rigid couplings according to whether they have elastic parts inside. The elastic coupling has elastic parts made of metal springs or rubber plastics, so it has the function of buffering and absorbing vibration and the ability to adapt to the axis deviation. It is suitable for the occasions with variable load impact, frequent starting and forward and reverse rotation, and also suitable for occasions where the 2-axis cannot be strictly aligned. There are no elastic parts in the rigid coupling, so there is no ability to cushion and absorb vibration.
The magnetic drive coupling is a non-contact coupling. It is generally composed of two magnets inside and outside. The two magnets are separated by an isolation cover in the middle. The inner magnet is connected with the driven part, and the outer magnet is connected with the power part. In addition to the elastic coupling's function of buffering and absorbing vibration, the magnetic drive coupling has the biggest feature that it breaks the structure of the traditional coupling and adopts a new principle of magnetic coupling to realize the non-passing between the driving shaft and the driven shaft. Direct contact can transmit force and moment, and can transform the dynamic seal into a static seal to achieve zero leakage. Therefore, it is widely used in occasions with special requirements for leakage.
