Miniature vacuum pump principle is simply means: with one out of the exhaust nozzle, the exhaust nozzle of each one, and at the entrance to continue to form a vacuum or negative pressure; exhaust nozzle at a slight positive pressure; working medium mainly For the gas, a compact instrument.
For example, a closed vessel (initially 100 KPa at atmospheric pressure) is continuously evacuated with a miniature vacuum pump VAA6005, and finally the pressure of the gas in the closed vessel is below atmospheric to an absolute pressure of 60 kPa.
Not only that, through special technical improvements, in addition to a single suction miniature vacuum pump, but also can form a suction pump dual-purpose miniature vacuum pump (ie the exhaust end can produce relatively large positive pressure) such as PCF, FAA series for Pressurized, inflated to overcome the system resistance, etc. and a very unique dual-use miniature vacuum pump PHW series It can be used for long-term idling, dry rotation and so on, unlike the general pump idling, or dry will damage the pump .
It is precisely because the exhaust port or the exhaust port can form a pressure difference with the outside atmosphere, unlike large vacuum pumps require oil and vacuum pump oil, will not pollute the working medium, and has a compact, low noise, maintenance-free, continuous 24 Hour operation, etc. Therefore, miniature vacuum pump is widely used in medical, health, scientific research, environmental protection and other fields because it is widely used in gas sampling, gas circulation, vacuum adsorption, accelerated filtration, automotive vacuum booster and the like. .
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