What is the main function of vacuum pump in vacuum system

This paper briefly introduces the working principle, classification, main structure and layout requirements of vacuum pump, and the necessity of the application of vacuum pump in vacuum booster system. Generally speaking, there is a large range from the atmosphere to the extremely high vacuum, and so far no vacuum system can cover this range.
Because the performance of all kinds of vacuum pumps can meet the common point of vacuuming the container, there are still differences. Therefore, it is very important to make clear the work tasks of the pump in the vacuum system when selecting the pump. The functions of the pump in various work fields can be summarized as follows:
1. Main pump the so-called main pump is to directly vacuum the vacuum vessel of the vacuum system to obtain the vacuum pump required by the process requirements.
2, rough pumping pump refers to the vacuum pump from the atmospheric pressure to reduce the vacuum system pressure to another pumping system can start to work.
Front stage pump front stage pump is a vacuum pump used to maintain the pressure of the front stage of another pump below its maximum permitted pressure of the front stage.
Maintenance pump maintenance pump is when the vacuum system is very small, can not effectively use the main front pump. For this purpose, an auxiliary front stage pump with a lower pumping speed is provided in the vacuum system to maintain the normal operation of the main pump or to maintain the low pressure vacuum pump required for the evacuated container.
5, crude vacuum pump or low vacuum pump crude, low vacuum pump refers to starting from the atmosphere, reduce the pressure of the pumping container after the work in the low vacuum or crude vacuum pressure range of vacuum pump.
High vacuum pump high vacuum pump refers to the vacuum pump working in the high vacuum range.
Ultra high vacuum pump refers to the vacuum pump operating in the ultra high vacuum range.
Booster pump booster pump usually refers to the work between the low vacuum pump and the high vacuum pump, in order to improve the pumping system in the middle pressure range or reduce the pumping rate of the front stage pump vacuum pump requirements.
plastic vacuum pump

vacuum pump conveying grains