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About “Negative pressure pump” and “positive pressure pump”
- Nov 14, 2018 -

“Negative pressure pump” and “positive pressure pump” are mainly artificially distinguished from functions and main uses. "Negative pressure pump" is mainly used in places where vacuum (negative pressure) is required, such as: pumping, gas analysis, gas circulation, gas sampling, vacuum adsorption, indirect water absorption, etc.; and "positive pressure pump" is mainly used for needs. The pump is used as a power to carry out gas transfer, pressurization of a closed container, inflating and inflating, indirect water pressure, etc., which are commonly used in medical, scientific research, environmental protection, instrumentation, control, and the like.

The "negative pressure pump" has a positive pressure at the exhaust end, but it is a micro-positive pressure, which is much smaller than the output pressure of the "positive pressure pump". For example, the micro vacuum pump VM, VAA, PC, etc. are "negative pressure pumps". ", "inhalation pump", and their exhaust end pressure is often only a few kilopascals (KPa); "positive pressure pump" suction end is also slightly negative pressure, in order to complete the pumping effect.

The gas booster pump series is a two-stage booster pump that can increase the pressure of very low pressure gas to a very high pressure. The driving pressure is ≤7bar, the pressure of the gas input port is 0.5-10 bar, and the maximum can be increased to 90Mpa. The reversing mode of this series of pumps is exactly the same as that of the N series. The whole pump is made of aluminum alloy and stainless steel. In the gas drive section of the pump, the series requires a lubricated gas to lubricate the seals and other internal parts. The pump has a drive piston diameter of 160 mm. The gas booster pump series is a single-stage booster pump. The input pressure of the pressure gas input port requires a certain degree of preload, and the pre-increased pressure varies depending on the maximum pressure of the gas booster pump picture. The maximum pressure can be increased to 80Mpa.

The gas booster pump H series uses a single air-controlled unbalanced gas distribution valve to achieve reciprocating motion of the pump, all made of aluminum alloy and stainless steel. All seals are imported high-quality products, the maximum design drive pressure is 10bar, in order to ensure the life of the pump, it is recommended to drive the pressure <8bar. The pumps have a drive piston diameter of 160 mm and are single-acting pumps, all with single-acting pumps with exhaust cooling. The reversing mode of this series of pumps is exactly the same as that of the B series, and the flow rate is doubled compared with the B type.


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