Correct selection of diaphragm coupling

Choosing a suitable coupling is a key step to make good use of the coupling. What type of coupling should be considered in the design stage
1. The diaphragm coupling consists of at least one diaphragm and two shaft sleeves. The diaphragm is fastened on the shaft sleeve with pins, which generally will not loosen or cause recoil between the diaphragm and the shaft sleeve. Some manufacturers provide two diaphragms or three diaphragms, with one or two rigid elements in the middle, and both sides are connected to the shaft sleeve.
2. The difference between single diaphragm coupling and double diaphragm coupling is the ability to deal with various deviations. In view of the complex bending of diaphragm, single diaphragm coupling is not suitable for eccentricity. The double diaphragm coupling can bend to different directions at the same time to compensate for eccentricity. The characteristics of valve inlet pump 3 and diaphragm coupling are a bit like bellows coupling. In fact, the coupling transmits torque in the same way. The diaphragm itself is very thin, so it is easy to bend when the relative displacement load is generated, so it can withstand a deviation of up to 1.5 degrees and produce a lower bearing load in the servo system.
4. Diaphragm coupling is often used in servo system. Diaphragm has good torque rigidity, but it is slightly inferior to bellows coupling.
5, on the other hand, diaphragm couplings are very delicate. If they are misused or not installed correctly, they will be easily damaged. Therefore, it is very important to ensure that the deviation is within the bearing range of the normal operation of the coupling.