Precautions for Vacuum Pump Selection

Vacuum pump prices, rotary vane vacuum pump, vacuum pump selection

1, the ultimate pressure of the vacuum pump should meet the working pressure of the process. It is usually chosen that the pump's ultimate pressure is less than about one order of magnitude of the process requirement.

2, each pump has a certain working pressure range, therefore, the pump operating point should be selected within this range, and not allow it to work outside the long hours of work pressure.

3, the vacuum pump at its working pressure, should be able to drain away the vacuum equipment in the process of generating all the gas volume.

4, select the vacuum unit:

   (1) When using a pump can not meet the pumping and vacuum requirements, the need for several pumps together, complement each other to meet the process requirements.

   (2) Some vacuum pumps can not work at atmospheric pressure, the need for pre-vacuum; some vacuum pump outlet pressure is lower than atmospheric pressure, the need for the former pump, it is necessary to combine the use of the pump. The combination of the vacuum pump, we call the vacuum pump unit, which can make the vacuum system to get a better vacuum and displacement. We should choose the correct combination of vacuum pump, because different vacuum pump on the gas extraction requirements are different requirements, for example: in general, Roots - rotary unit is not suitable for containing more condensable gas system.

5. When you choose the oil seal pump, you should first understand whether your vacuum system is oil pollution requirements. If the rigorous requirements of oil-free equipment, should choose a variety of oil-free pumps, such as: water ring pump, cryogenic pumps. If the requirements are not strict, you can choose a pump, coupled with a number of anti-pollution measures, such as cold trap, block oil trap, baffle, but also to achieve clean vacuum requirements.

6, to understand the gas composition was pumped, the gas contains no condensable steam, with or without particulate dust, corrosive and so on. When selecting a vacuum pump, it is necessary to know the gas composition and to select the pump for the pumped gas. If the gas contains steam, particles, and corrosive gases, should be considered in the pump inlet pipe on the installation of auxiliary equipment, such as condensers, dust and so on.

7, when the choice of oil seal vacuum pump, to consider the vacuum pump discharged from the oil vapor (soot) on the impact of the environment. If the environment does not allow pollution, should choose oil-free vacuum pump, or the oil vapor to the outside.

8, the vibration of the vacuum pump work on the process and whether the impact of the environment, if the process does not allow, should choose no vibration of the pump or take anti-vibration measures.

9, the price of vacuum pumps, operation and maintenance costs.

   Once we have taken into account the various circumstances before we can finalize a solution for your adaptation:

   (1) the minimum investment costs.

   (2) the minimum production operating costs.

   (3) the first two cases a reasonable and even distribution of feasible option