Diaphragm Vacuum Pump Working Principle

The diaphragm vacuum pump is a vacuum pump with dry operation and relatively low vacuum. The working principle is to change the volume of the diaphragm chamber by reciprocating stretching-compression diaphragm, and then switch the gas path with the one-way valve to complete the vacuum extraction function. Since the rubber diaphragm itself is large in elasticity and cannot completely exhaust the gas, the vacuum degree of the diaphragm vacuum pump is generally not higher than 200 Pa, but it has the advantages of small volume, light weight, convenient use, and the like, and all components in contact with the gas pass through. After the anti-corrosion treatment, the chemical corrosion resistance of the vacuum pump can be completely solved. It is especially suitable for applications requiring chemical resistance or long-term uninterrupted operation. It is mainly used in food, chemical, pharmaceutical, aerospace and automotive industries. The rubber diaphragm is a key component of the diaphragm vacuum pump. The use of long time and high vacuum requires higher requirements for the material of the diaphragm and the design of its related components.