The centrifugal pump coupling is a mechanical part that connects the centrifugal pump shaft and the motor shaft. It transmits the rotating power of the motor to the water pump. It cannot adjust the concentricity of the pump shaft and the motor shaft, so it requires high installation accuracy and is often used in small water pumps. The connection between the unit and the portable centrifugal pump set.
There are many types of centrifugal pump couplings. According to the relative position of the two shafts connected and the change of position, they can be divided into:
1. Fixed centrifugal pump coupling
It is mainly used where the two shafts require strict alignment and no relative displacement occurs during work. The structure is generally simple and easy to manufacture, and the instantaneous speed of the two shafts is the same. There are mainly flanged centrifugal pump couplings and sleeve centrifugal pump couplings Shaft, centrifugal pump coupling, etc.
2. Removable centrifugal pump coupling
It is mainly used in the place where the two shafts are skewed or there is relative displacement in the work. According to the method of compensating displacement, it can be divided into rigid movable centrifugal pump coupling and elastic movable centrifugal pump coupling.
1) Rigid removable centrifugal pump coupling
The dynamic connection formed between the working parts of the centrifugal pump coupling has a certain direction or several directions of activity to compensate, such as a dental inlay centrifugal pump coupling (allowing axial displacement), cross groove centrifugal pump coupling (Used to connect two shafts with small parallel displacement or angular displacement), universal centrifugal pump coupling (used where the two shafts have a large deflection angle or a large angular displacement during work), gear centrifugal pump Couplings (allowing comprehensive displacement), chain centrifugal pump couplings (allowing radial displacement), etc.
2) Flexible movable centrifugal pump coupling
The elastic deformation of the elastic element is used to compensate the deflection and displacement of the two shafts. At the same time, the elastic element also has cushioning and vibration reduction properties, such as a serpentine spring centrifugal pump coupling, a radial multilayer leaf spring centrifugal pump coupling, elasticity Ring bolt centrifugal pump coupling, nylon bolt centrifugal pump coupling, rubber sleeve centrifugal pump coupling, etc. Some centrifugal pump couplings have been standardized. When selecting, first select the appropriate type according to the work requirements, then calculate the torque and speed according to the diameter of the shaft, then find the applicable model from the relevant manual, and finally make the necessary verification calculations for certain key parts.