Vacuum pump manufacturers

Vacuum pump manufacturers

1, the working pressure of the vacuum pump should meet the vacuum equipment limit vacuum and working pressure requirements. Such as: a vacuum drying process requires 10mmHg working vacuum, the vacuum pump vacuum limit of at least 2mmHg, the best can reach 1mmHg. The ultimate vacuum of the pump is usually higher than that of the vacuum equipment.

2, the correct choice of vacuum pump operating point. Each pump has a certain working pressure range, such as: 2BV series water ring vacuum pump working pressure range 760mmHg~25mmHg (absolute pressure), in such a wide range of pressure, the pumping speed varies with pressure (performance curve with changes in the light of the pump,) its stable working pressure range of 760~60mmHg. Thus, the pump operating point should be selected in this range is more appropriate, but can not let it in the 25~30mmHg long-term work.

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

4, the correct combination of vacuum pump. Because the vacuum pump has selective pumping, therefore, sometimes choose a pump can not meet the pumping requirements, the need for a combination of several pumps, complement each other to meet the pumping requirements. Such as titanium sublimation pump with high pumping speed of hydrogen, but not pumping helium, and the triode sputtering ion pump (or two asymmetric cathode sputtering ion pump) on a certain argon pumping speed, the two together, can make the vacuum device to get a better vacuum. In addition, some pumps can not work under atmospheric pressure, need to pre vacuum; some pump outlet pressure below atmospheric pressure, need to pre stage pump, they need to combine the use of pumps.

5, vacuum equipment for oil pollution requirements. If the equipment is strictly required without oil, should choose a variety of oil pumps, such as: water ring pump, molecular sieve adsorption pump, sputter ion pump, cryogenic pump, etc.. If the requirement is not strict, you can choose a pump, plus some oil pollution prevention measures, such as cold trap, baffle, oil well, also can achieve the clean vacuum.

6, to understand the composition of the gas is pumped, the gas contains no condensable vapor, whether or not the particle dust, corrosion, etc.. When selecting a vacuum pump, it is necessary to know the composition of the gas. If the gas contains steam, particles, and corrosive gas, should be considered in the pump inlet pipe on the installation of auxiliary equipment, such as condensers, dust collector, etc..

7, vacuum pump out of the oil vapor on the environment. If the environment does not allow pollution, you can choose oil-free vacuum pump, or the oil vapor out of the room.

8, vacuum pump vibration generated on the working process and the environment have no effect. If the process is not allowed, should choose no vibration of the pump or take anti vibration measures.

9, vacuum pump price, operation and maintenance costs.