What are the Negative and Positive Pressure of the Micro Air Pump Respectively?

A micro-gas pump is a miniaturized gas transmission device that can transfer gas from one place to another. Compared with the traditional gas transmission equipment, it is more compact, light, efficient and reliable characteristics. Small in volume, the working medium is gaseous, mainly used for gas sampling, gas circulation, vacuum adsorption, vacuum pressure preservation, pumping, pumping, pressurization and so on. Generally, micro air pumps has two ports of intake and exhaust, and the atmospheric pressure (atmospheric pressure) is called "positive pressure"; for example, the vacuum pump belongs to the negative pressure pump, and the booster pump belongs to the positive pressure pump. Through the operation of the drive motor, the gas is quickly discharged or inhaled to the desired place, realizing the positive or negative pressure transmission of the gas. In the positive pressure of the micro pump, the pressure inside the pump will rise rapidly in a certain period of time, reaching the standard of normal operation. At this time, the gas pump will inhale the gas from the inlet of the gas pump, and then the gas through the micro gas pump pressure conversion to reach the required positive pressure value, and then the gas is discharged through the outlet of the gas pump, forming a positive pressure state.

"Negative pressure pump" and "positive pressure pump" are mainly from the function and the main use to artificially distinguish, the two are very different. For example, gas flow direction, negative pressure micro gas pump is a miniaturized, high precision, high efficiency gas pump. It can change the pressure difference of the gas, and extract the gas from the low pressure area to the high pressure area, realizing the gas transmission and compression. It has many advantages, such as compact structure, low noise, low power, convenient maintenance, long service life and so on. It's very widespread. In the field of medical equipment, it can be used to attract ventilators, infusion pumps, hand-held aspiractors and other equipment to help patients breathe, infusion, clean, etc., and improve medical efficiency. In the field of instrumentation, it can be used to transport and compress gas to realize automatic control of instrumentation and improve production efficiency. In the field of environmental protection, it can be used to filter air and breathable cloth bags to reduce environmental pollution. The external gas is inhaled into the suction nozzle, the positive pressure is sprayed from the exhaust nozzle; such as the pressure of the general "negative pressure pump" is much lower than that of the "positive pressure pump"; the "negative pressure pump" is mainly used for vacuum (negative pressure), such as: pumping, gas analysis, gas, gas circulation, gas sampling, vacuum adsorption, indirect water absorption, etc.

Positive pressure micro air pump uses micromotor to drive the compressor, which is small in volume, light in weight, low in power, but can provide high pressure and high flow of gas output, to achieve a positive pressure state much higher than the natural atmospheric pressure. It is mainly composed of micromotor, piston, compressor chamber, air inlet, air outlet, valve and other parts. When the micromotor drives the piston mechanical movement, the compressor draws air or other gas from the gas inlet, then presses the gas into the compressor chamber, and finally emits the gas through the outlet. It is very widely used, it can be used in sphygmomanometer, ventilator, oxygen supply system, drug separator, pneumatic stirrer and other medical equipment. In the laboratory, it can be used for gas transmission and control, substance adsorption and exclusion and other experimental studies. In vehicles, it can be used for tire inflation, air suspension system, etc. It is mainly used for the pump as power, gas transfer, pressurization of the closed container, inflation, indirect water pressure, etc. Both can be used in medical treatment, scientific research, environmental protection, instruments, control and other aspects, but the functions are different, the uses are also different.

To be exact, the exhaust end of the "negative pressure pump" also has positive pressure, but it is micro positive pressure, which is much smaller than the "positive pressure pump" output pressure, such as micro vacuum pump VBY, VLK, VCY, VQY series is "negative pressure pump"; the same "positive pressure pump" pumping end also has micro negative pressure, so as to complete the role of pumping.

Sometimes due to the work needs, we need to adjust the output pressure of the pump, then it is necessary to choose adjustable micro pump, such as adjustable micro air pump. The essence of adjustable speed micro gas pump is to add a pressure relief circuit at the exhaust end of the pump, and change the actual pressure of the pipeline by controlling the discharge volume. The realization of the pressure relief circuit of adjustable speed micro air pump mainly depends on a precision flow regulating valve to control the gas volume, but also controls the change of output flow.

The above is our VSD motor to share with you about positive and negative pressure of micro air pump expertise. For more information, please contact our professional customer service personnel to answer. Thank you for clicking and watching.