Small vacuum pumps, also known as miniature vacuum pumps, is a gas as the main working medium of the vacuum pump for the need for long-term idling, dry rotating and so on occasions, a lot of areas will be used in small vacuum pumps, then how much a small vacuum pump?
There are many kinds of small vacuum pumps on the market, cheap as long as two or three hundred dollars a unit, the price of ordinary products in the five or six hundred dollars to more than a thousand dollars, the expensive ones are also thousands of dollars, the specific price according to the type of small vacuum pumps, brands, parameters, application areas and other factors.
Note: The above price source network, for reference only.
Two, miniature vacuum pump how to select
Micro vacuum pump is more suitable for high load environmental requirements, no maintenance, oil-free, pollution-free, in the medical, gas analysis samples, instruments and other fields are widely used. Miniature vacuum pump selection to note:
1, if you just use the miniature vacuum pump output compressed air. Simply put, it is only used to pump and inflate, the pump inlet is basically not used; this situation is relatively simple, in accordance with the vacuum pump output pressure size selection can be.
2, if the micro vacuum pump pumping, this situation is more complex, need to consider the pumping rate and load:
(1) ordinary selection
Considering the size of the vacuum pump air end resistance, and the pumping rate, pressure and power, combined with their own use of micro vacuum pumps to choose the appropriate load and pressure.
(2) Detailed selection
①The use of vacuum pumps need to be connected to the external air pipe, the pipeline curvature and bending points will lead to blockage, according to the size of the air pipe selection.
②Selected according to the technical strength of the manufacturer, see the use of pure copper motor and ordinary motor, according to the price can also be judged.
③Parameter selection should leave a margin, especially the flow parameters. Pump access to the gas system, due to piping, valves and other gas components to cause pressure loss, will attenuate the flow.
④Micro vacuum pump to maintain the vacuum or positive pressure in the container state, when the vacuum or positive pressure in the container is lower than the set value, the pump needs to be energized to start, higher than the set value is in the shutdown state.
5 according to the miniature pump life selection, high quality DC pumps are more than 1000 hours of trouble-free continuous operation time, some can even reach thousands of hours.
Three, small vacuum pump selection to pay attention to the problem
1, with the load start problem
If the miniature air pump in the start of its pumping port before the existence of a vacuum or exhaust port already exists in the pressure, it is necessary to consider the pump's another technical parameter: inlet maximum starting load Pis value, the exhaust port maximum starting load Pos value.
2, small vacuum pump medium temperature
Based on the temperature of the medium gas through the pump, to consider the ordinary type or high temperature type.
3, small vacuum pump electromagnetic interference
If there is a precision circuit to control the micro-pump, depending on the circuit anti-interference ability, you may need to order a small vacuum pump with low electromagnetic interference.