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Small size vacuum pump, small size, low noise, low power consumption, easy to operate, easy to carry, maintenance free, 24-hour continuous operation, also allows the medium rich in water vapor. The most important thing is that it is dry and oil-free and does not need vacuum pump oil, so it will not pollute the working medium and interfere with the analysis of the medium.

Features of large vacuum pump:

Simply put: high power, high limit vacuum (minimum absolute pressure) (the smaller the absolute pressure, the higher the limit vacuum). Some even can achieve the power of 10 minus several times PA, which is very close to the theoretical vacuum. The pumping rate is large, usually in L / S (L / s). It is widely used in industry.

Disadvantages: high price, large volume, heavy weight, high noise, high energy consumption, regular maintenance, not easy to move, etc. Some large vacuum pumps must use vacuum pump oil. Oil mist will be produced during operation, which will pollute the working medium The above disadvantages are in some fields

For example, although the vacuum degree of large-scale vacuum pump is high, it is wasted in low vacuum situation. For example, in the laboratory, it only needs to pump a small amount of gas for gas sampling, gas analysis, gas circulation, vacuum adsorption, gas transfer, pressurization, indirect water absorption, drainage, etc., using large vacuum pump will expose its many shortcomings. At this time, with a small vacuum pump, coarse vacuum (low vacuum) can be satisfied, and small size, low noise, low power consumption, easy to operate, easy to carry, maintenance free, can operate continuously for 24 hours, and the medium is allowed to be rich in water vapor. Most importantly, because it is dry and oil-free, vacuum pump oil is not needed, so it will not pollute the working medium and interfere with the analysis of medium. And the price is much cheaper.

Distinction between small vacuum pump and large vacuum pump

Now, with the wide application of small vacuum pump in various fields and the improvement of vacuum technology, the performance of small vacuum pump is also improving. For example, a small vacuum pump with high negative pressure can reach the limit vacuum degree of Chengdu Weicheng Electronic Machinery Co., Ltd., that is, the negative pressure is about -0.09mpa; the maximum pumping rate is 28L / min; There is also a small vacuum pump which can simultaneously pump and pump air, with negative pressure (- 50kPa) and maximum output positive pressure (relative atmospheric pressure) of 100KPA (about 1kg).