Regardless of the reason for the pressure drop of the pressure holding circuit of the air pump, the booster pump will automatically start to supplement the leakage pressure and keep the circuit pressure constant. Operational safety: It adopts gas drive, no arc and spark, and is completely used in places with flammable and explosive liquid or gas. Maintenance is simple and cost-effective: The booster pump is a plunger pump. When it is working, the booster pump works quickly. As the output pressure increases, the reciprocation of the pump slows down until it stops. At this time, the pressure of the pump is constant and the energy consumption is the lowest. The parts stop moving.
There are two types of micro pumps used for charging: gas sampling pumps and micro vacuum pumps. Although they are usually simply referred to as miniature vacuum pumps without distinction, they are different from a technical point of view, and special attention should be paid to the selection.
Gas sampling pumps are: PM series (specific models such as: PM950.2, PM850.5, PM8001, PM7002, PM6503); mini vacuum pumps are: VM series, VAA series, PK series, PC series, VCA series, VCC series, VCH Series, PH series, FM series, FAA series, PCF series, all specifications under these series are real miniature vacuum pumps, such as VM7002, VAA6005, PC3025, etc.
The resistance of the air inlet of the micro pump can be measured with an instrument. Compare it with the Por value of the pump's technical parameter "Maximum Allowable Resistance at the Air Inlet" to know whether the selection is appropriate. It is usually determined by a simple method based on experience. For example, the following situations are due to the large load (that is, the resistance of the pumping end of the pump is larger), and can only be selected within the range of the micro vacuum pump: ① Connect a very long pipeline, or the pipeline has many bending points, severe bends, or even blocked or closed, or the inner hole of the pipeline is small (for example, less than φ2 mm); ②There are throttle valves, solenoid valves, gas switches, and filters in the pipeline And other components; ③the pump suction port is connected with a closed container, or although the container is not sealed but the air intake is small; ④the pump suction port is connected with a suction cup for adsorbing objects (such as integrated blocks, precision workpieces, etc.); ⑤pump The suction end is connected to the filter container, and a filter screen is placed at the mouth of the container to accelerate liquid filtration.