Model selection of coupling diaphragm

Published: 2020-11-09

Coupling: It can be seen from the literal meaning that it is a mechanical part that connects two shafts. It is a necessary component in many mechanical products, especially in many industrial production products, couplings are even more indispensable.

CouplingThe maintenance effect of mechanical products is also very important, especially in the development of contemporary society, the quality of products is very important.

Shaft coupling refers to a device that connects two shafts or shafts and rotating parts, and rotates together during the process of transmitting the driving force of motion, and does not loosen under normal circumstances.

Sometimes it is also used as this kind of safety device to prevent the connected parts from bearing excessive load, and has the effect of overvoltage protection.Most of the common couplings have been standardized or standardized. Under normal circumstances, only the type of coupling must be properly selected, and the model specifications and specifications of the coupling must be clarified.

When necessary, the weak points of the vulnerable parts can be checked and calculated for the strength of the load working capacity; when the speed ratio is high, the centripetal force of the edge and the deformation of the elastic element are calculated by the formula, and the balance check and so on are carried out.

The diaphragm coupling can actively compensate the axial, radial and angular offset caused by the motor, as well as the influence caused by factors such as manufacturing error, installation error, bearing deformation and temperature rise.Diaphragm coupling is a metal elastic element in flexible coupling. The driven motor transmits torque, elastic vibration, noise-free, and non-lubricated point. It is an ideal product to replace gear couplings and general couplings today.

The diaphragm coupling bolt connection does not need to be threaded on the connecting piece, the use is not restricted by the connecting piece, the structure is simple, and the disassembly and assembly are convenient.Stud bolts can be used in occasions where bolts cannot be used due to structural restrictions, but a compact connection structure is required.The bolt connection does not have a nut and has a smooth exposed surface, but it is not suitable for frequent disassembly and connection to avoid damage to the threaded hole.

During the effective service life of the diaphragm coupling, the wedge-shaped gap surface that is inclined to each other needs to be maintained, lubricating oil is added, and the large opening enters the small opening.The two surfaces must have sufficient relative movement speed, the fluid must have sufficient viscosity, and the oil supply must be sufficient.In the maintenance process, it is important to grasp the basic scope of hydrodynamic lubrication, which is also the theoretical basis of sliding bearing design.

When we choose to purchase the coupling diaphragm, we must choose the appropriate type and model. This will have a better performance for the use of the function, but also can make the overall potential better. The important thing is to make the overall The cushioning and damping effects are maximized.

The material of the coupling diaphragm is incorrectly selected. The diaphragm should be selected according to the medium used, and some have to be customized.For example, some diaphragms are not resistant to organic solvents. If organic solvents are used, the diaphragms are of course easily damaged.The temperature resistance of the diaphragm of which diaphragm pump is used depends on the medium, especially the temperature.

Use the coupling diaphragm correctly and reasonably. If the correct material is selected, the material of the diaphragm is just suitable for the material used by the pump, and there is no problem with the quality of the diaphragm itself.The fragility of the diaphragm should be related to whether it is used correctly.Diaphragm pumps often run at high speeds. Frequent empty or half-empty operations will affect the service life of the diaphragm, and the large amount of solid particles in the logistics will also affect the service life.