Double stage slide valve vacuum pump with high pumping speed
For a long time, there are many difficulties and challenges in the development of double stage slide valve vacuum pump in our country. The production of 2H-150 and other products took more than 20 years after the standard was formulated. In fact, the design and manufacture of double stage slide valve vacuum pump with large pumping speed will encounter a series of problems, such as dynamic balance, control of two-stage oil supply, noise reduction and so on. However, the double stage slide valve vacuum pump with high pumping speed has a wide application prospect
Due to the structural characteristics, the capacity of the slide valve pump is much larger than that of the rotary vane pump. Because the slide valve vacuum pump can work in poor vacuum environment for a long time, it is often used in large vacuum equipment. The limit pressure of single-stage pump is between 0.6 PA and 1.3 PA (gas shut-off) and that of double-stage pump is 0.06 PA.
Pumping speed ≥ 150L / s can be regarded as a large-scale slide valve pump. For a long time, there are only 70L / s two-stage slide valve pump in China. However, if there is a double-stage slide valve vacuum pump with high pumping speed, it is particularly beneficial to simplify the unit structure of vacuum equipment, reduce power consumption, achieve energy-saving effect, simplify operation and improve control reliability.
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