Vacuum Pump System Selection
Problems to be Considered in Selecting Vacuum Pump System
When the use of a pump can not meet the requirements of pumping and vacuum, several pumps need to be combined to complement each other in order to meet the technological requirements. Some vacuum pumps can not work at atmospheric pressure and need pre-vacuum. Some vacuum pumps need pre-pump because their outlet pressure is lower than atmospheric pressure. The combined vacuum pump, which we call the vacuum pump system, can make the vacuum system get better vacuum degree and exhaust volume. We should correctly select the combination of vacuum pumps, because different vacuum pumps have different requirements for the gas extracted.
When you choose an oil seal pump, you should first know whether your vacuum system requires oil contamination. If the equipment is strictly oil-free, all kinds of oil-free pumps should be selected, such as water ring pumps, cryogenic pumps, etc. If the requirements are not strict, you can choose to have oil pumps, plus some anti-oil pollution measures, such as adding cold traps, oil traps, baffles, etc., can also meet the requirements of clean vacuum.
It is important to know the composition of the extracted gas. The gas contains no condensable vapor, particulate dust, corrosion and so on. When choosing a vacuum pump, it is necessary to know the gas composition and select the appropriate pump for the pumped gas. If the gas contains steam, particles, and corrosive gas, it should be considered to install auxiliary equipment such as condenser, dust collector in the intake pipeline of the pump. When choosing oil seal vacuum pump system, it is necessary to consider how the oil vapor discharged from the vacuum pump affects the environment.