Micro vacuum pump, rotary vane vacuum pump, often called “laboratory vacuum pump”, because in scientific research, laboratory, often used for gas circulation, gas sampling, pumping filter, pumping vacuum indirect pumping, sometimes referred to as the laboratory vacuum pump.
Detailed introduction and examples
Laboratory vacuum pump, that is, the micro vacuum pump, is generally powered by a dc motor. Because dc motor can achieve small volume, light weight, easy to carry, and, dc is also safe voltage.
Laboratory vacuum pump when used for gas cycle, is to make the gas flowing evenly in the two containers, which requires the pump suction port to absorb a certain amount of resistance. Pump before the exhaust port, generally arranged is a closed container, in addition, but also in the pump exhaust end connected with a lot of gas components, such as valves, flowmeters, closed container, resulting in a lot of exhaust resistance, and often appear exhaust port completely blocked.
A miniature vacuum pump commonly used in laboratories, with a suction port that provides -50 kpa of negative pressure and an exhaust port that provides 100Kpa of positive pressure above atmospheric pressure. The air outlet and exhaust port of this miniature vacuum pump can be blocked at will (hanging a large load), or even the air outlet is completely blocked, it is also normal operation. So if used for gas circulation, sampling, pumping pump is very suitable.
And the advantage of the general vacuum pump is in the suction port load, exhaust can not block turn, this in the application of the experimental process, is more taboo.
In the test, sometimes pumping liquid corrosive, can not allow the liquid into the air pump, but also need to use a micro vacuum pump for indirect pumping, this is another advantage of the laboratory vacuum pump.
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