The function of the vacuum pump is to extract gas molecules from the vacuum chamber, reduce the pressure of the gas in the vacuum chamber, so as to achieve the required vacuum.
The function of the vacuum pump is to extract gas molecules from the vacuum chamber, reduce the pressure of the gas in the vacuum chamber, so as to achieve the required vacuum. Generally speaking, there is a large range from the atmosphere to the very high vacuum, and so far no vacuum system can cover this range. Therefore, in order to meet the technical specifications of different products, work efficiency and equipment life requirements, different vacuum sections need to choose different vacuum system configuration. In order to achieve optimal configuration, when selecting a vacuum system, the following points should be considered:
Check and determine the type and volume of exhaust gas required for the process. Because if the type of gas being pumped is reacted with the liquid in the pump, the pump system will be contaminated. At the same time, we must consider the appropriate exhaust time and the amount of gas generated during the extraction process.
It determines the structure of the product, and the vacuum is the two reading of gauge and absolute pressure. Absolute pressure means that reading is absolute, that is, the closer the reading is, the higher the degree of vacuum is. 0′. But the closer the surface pressure is to 760 mmH, the higher the vacuum is. If the absolute pressure (limit vacuum) you require is close to `0′, then only the vacuum pump can meet this demand, but if the demand is close to 1bar (atmospheric pressure), then you can choose Roots or centrifugal fans to meet this demand. Demand.
First, we must check and determine the vacuum degree of each process requirement. Because each process has its own vacuum range, it must be carefully studied and determined.
Determine the time required to achieve the required vacuum, the resistance and leakage of the vacuum pipe. Considering the requirement of vacuum degree, the pumping rate needed by vacuum should be maintained under certain technological requirements.
The limit vacuum of the vacuum pump system is checked on the basis of determining the vacuum required by the process, because the limit vacuum of the system determines the optimum working vacuum 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.
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