Small vacuum pump, also known as micro vacuum pump, is a vacuum pump with gas as the main working medium. Small vacuum pumps are used in many fields where idling and dry running are needed for a long time. Then how much is a small vacuum pump?
There are many kinds of small vacuum pumps in the market, the cheap ones are only two or three hundred yuan, the prices of ordinary products range from five or six hundred yuan to more than one thousand yuan, and the expensive ones are tens of thousands of yuan. The specific price varies according to the types, brands, parameters and application fields of small vacuum pumps.
Note: The above price source network is for reference only.
Second, how to choose a miniature vacuum pump
Miniature vacuum pump is more suitable for high-load environment, without maintenance, oil and pollution, and is widely used in medical treatment, gas analysis samples, instruments and meters and other fields. Attention should be paid to the selection of micro vacuum pump:
1. If only a micro vacuum pump is used to output compressed air. Simply put, it is only used for inflating and inflating, and the air inlet of the pump is basically not used; This situation is relatively simple and can be selected according to the output pressure of the vacuum pump.
2. If the air is pumped by a micro vacuum pump, this situation is more complicated, and the pumping speed and load of the vacuum pump need to be considered:
(1) general selection
Considering the resistance, pumping speed, pressure and power of the air end of the vacuum pump, combined with their own use situation, choose a micro vacuum pump suitable for load and pressure.
(2) Detailed selection
① When a vacuum pump is used, an external air pipe is needed, and the curvature and bending point of the pipe will lead to blockage. Select the model according to the size of the air duct.
(2) According to the technical strength of the manufacturer, look at the pure copper motor and ordinary motor, and also judge according to the price.
(3) There should be allowance for parameter selection, especially for flow parameters. After the pump is connected to the gas path system, the flow rate will be attenuated due to the pressure loss caused by gas path components such as pipelines and valves.
④ The miniature vacuum pump keeps the vacuum or positive pressure in the container. When the vacuum or positive pressure in the container is lower than the set value, the pump needs to be energized to start, and when it is higher than the set value, it is in a shutdown state.
⑤ According to the service life of micropumps, the trouble-free continuous running time of high-quality DC pumps is more than 1000 hours, and some even reach thousands of hours.
Three, small vacuum pump selection should pay attention to the problem
1, load startup problem
If there is vacuum in the suction port or pressure in the exhaust port before the micro air pump is started, we should consider another technical parameter of the pump: the maximum starting load Pis at the inlet and the maximum starting load Pos at the exhaust port.
2. Medium temperature of small vacuum pump.
According to the temperature of the medium gas passing through the pump, consider whether to use the ordinary type or the high temperature type.
3. Electromagnetic interference of small vacuum pump.
If there is a precise circuit to control the micropump, according to the anti-interference ability of the circuit, it may be necessary to order a small vacuum pump with low electromagnetic interference.