How to Select Vacuum Pump

The function of vacuum pump is to extract gas molecules from the vacuum chamber, reduce the gas pressure in the vacuum chamber, and make it meet the required vacuum degree. Generally speaking, there is a large range from atmosphere to very high vacuum. So far, no vacuum system can cover this range. Therefore, in order to meet the requirements of process index, working efficiency and equipment working life of different products, different vacuum sections need to choose different vacuum system configuration. In order to achieve the best configuration, the following points should be taken into account when choosing the vacuum system:Roots-vacuum-Pumps-For-PVD-Coating-Machines

1. Determine the working vacuum range - first of all, we must check and determine the vacuum required by each process. Because each process has its own suitable vacuum range, it must be carefully studied and determined.

2. Determine the limit vacuum degree - Check the limit vacuum degree of the vacuum pump system on the basis of determining the vacuum degree required by the process, because the limit vacuum degree of the system determines the best working vacuum degree of the system. Generally speaking, the limit vacuum of the system is 20% lower than the working vacuum of the system and 50% lower than the limit vacuum of the front pump.Rotary-Vane-Vacuum-Pump-or-Glass-Reactor

3. Types and volumes of pumped gases - Check and determine the types and volumes of pumped gases required by the process. Because if the type of pumped gas reacts with the liquid in the pump, the pump system will be polluted. At the same time, it must be considered to determine the appropriate exhaust time and the amount of gas produced in the process of exhaust.

Finally, we should consider the vacuum volume of the vacuum pump, check and determine the time required to achieve the required vacuum degree, the flow resistance and leakage of the vacuum pipeline, and consider that after meeting the required vacuum degree, we should maintain the required vacuum extraction rate under certain technological conditions.Slide-Vane-Rotary-Vacuum-Pump-for-Milking-Machine