The function of a vacuum pump is to extract gas molecules from the vacuum chamber, reduce the gas pressure inside the vacuum chamber, and achieve the required vacuum degree. In summary, there is a large range from the atmosphere to extremely high vacuum, and so far there is no vacuum system that can cover this range. Therefore, in order to meet the process indicators, work efficiency, and equipment service life requirements of different products, different vacuum system configurations need to be selected for different vacuum sections.
To achieve optimal configuration, when selecting a vacuum system, the following points should be considered:
1. Determine the working vacuum range
Firstly, it is necessary to check and determine the vacuum degree required for each process. Because each process has its own suitable vacuum degree range, it must be carefully studied and determined.
2. Determine the ultimate vacuum degree
On the basis of determining the vacuum degree required by the process, check the ultimate vacuum degree of the vacuum pump system, as the ultimate vacuum degree of the system determines the optimal working vacuum degree of the system. Generally speaking, the maximum vacuum degree of the system is 20% lower than the working vacuum degree of the system, and 50% lower than the maximum vacuum degree of the preceding pump.
3. The type and amount of extracted gas
Check and determine the type and amount of air extraction required by the process. Because if the type of gas being pumped reacts with the liquid inside the pump, the pump system will be contaminated. At the same time, it is necessary to consider determining the appropriate exhaust time and the amount of gas generated during the extraction process.
4. Vacuum volume
Check and determine the time required to achieve the required vacuum degree, as well as the flow resistance and leakage of the vacuum pipeline.
Consider maintaining the required vacuum rate under certain process conditions after achieving the required vacuum degree.
