V - must see 55 - vacuum pump selection strategy

　　V- 55 the function of the vacuum pump gas molecules are removed from the vacuum chamber, and reduce the pressure to achieve the required degree of vacuum in the vacuum chamber. In general, have a great range from the atmosphere to the extremely high vacuum, so far no vacuum system can cover the scope.

as a result, in order to achieve different product technical index, the efficiency and the working life of the equipment requirements, need for different vacuum section to select different vacuum system configuration. In order to achieve the optimal configuration, choosing vacuum system should consider the following:

1. V - 55 the limit of the vacuum pump pressure technology to meet the work pressure. Usually, the limit of the selected pump pressure about one order of magnitude lower than the technical requirements.

2。 Each pump has a certain working pressure range. As a result, the working point of the pump should be chosen in this range, and does not allow its long work more than allow the work pressure.

3。 In its work under the pressure, the vacuum pump should be able to discharge all the gas produced in the process of vacuum equipment.

4。 Select vacuum unit:

when a cannot satisfy the requirement of extraction and vacuum pump, you need to several pump combination, complement each other, in order to meet the technological requirements.

some vacuum pump can't work under atmospheric pressure, to a vacuum; Some of the vacuum pump outlet pressure is lower than the atmospheric pressure, need a front stage pump, so need to use a combination of all the pump. Through the combination of the vacuum pump, we call it a vacuum pump unit, vacuum system can get better vacuum degree and emissions. We should choose correct combination vacuum pump, because different vacuum pump to take out gas have different requirements, such as: roots - Rotor machine is not suitable for under normal conditions contained more condensable gas system.

5。 When you choose to pump oil seal, you should first know your vacuum system to see if there is oil pollution requirements. If you don't need oil equipment strictly, should choose all kinds of oil pump, such as water ring pump, cryogenic pump, etc. If not strict, can choose the oil pump, and take some oil pollution prevention measures, such as increasing cold trap and oil well, baffle, etc. Also can meet the requirements of clean vacuum.

6。 Understand by pumping gas composition. Excluding condensable gas steam, no particles of dust, no corrosion and so on. Choosing a vacuum pump, must understand the gas composition, and select the corresponding pump for pumping gas. If gas and corrosive gas, steam, particle in the condenser installed on the inlet pipe of pump should be considered and dust collector and other auxiliary equipment.

7。 Consider when choosing a oil seal vacuum pump V - Vacuum pump oil vapor emissions (55 Soot) How to affect the environment. If you don't allow pollution environment, should choose oil-free vacuum pump, or the oil vapor emissions to the outside.

8。 V - Vibration of 55 vacuum pump work whether affect the process and the environment. If you don't allow the technological process, should choose no vibration pump or vibration control measures.

9。 The price of the vacuum pump, operating and maintenance costs.