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+--- Thread: vacuum pump for vacuum equipment selection basis (/showthread.php?tid=24007)
vacuum pump for vacuum equipment selection basis - yanyan - 07 Dec 2020
The two rotors of the vacuum pump run synchronously through a pair of high precision gears. The driving shaft is connected with the motor through a coupling. There are mainly two kinds of transmission structure arrangement: one is that the motor and gear are placed on the same side of the rotor. The driven rotor is driven directly by the gear at the motor end, so that the torsional deformation of the driving rotor shaft is small, and the gap between the two rotors will not be changed due to the large torsional deformation of the driving shaft, so that the clearance between the rotors is uniform during operation.
When one kind of pump can not meet the requirements of air extraction and vacuum, several pumps need to be combined to supplement each other to meet the process requirements. Some vacuum pumps can not work under atmospheric pressure and need pre vacuum; some vacuum pumps with outlet pressure lower than atmospheric pressure need front stage pumps, so they need to be combined. The combined vacuum pump is called vacuum pump unit. It can make the vacuum system get better vacuum degree and air displacement. We should choose the combined vacuum pump correctly, because different vacuum pumps have different requirements for the gas to be removed. For example, in general, roots rotary vane unit is not suitable for the system containing more condensable gas. When you choose an oil sealed pump, you should first know whether your vacuum system has requirements for oil contamination. If the equipment is strictly required to be oil-free, all kinds of oil-free pumps should be selected, such as: water ring pump, low-temperature pump, etc. If the requirements are not strict, you can choose to have an oil pump, plus some anti oil pollution measures, such as adding cold trap, oil trap, baffle, etc., can also meet the requirements of clean vacuum.
Understand the composition of the extracted gas, whether there is condensable steam in the gas, whether there is particulate dust, whether there is corrosiveness, etc. When choosing the vacuum pump, it is necessary to know the gas composition and select the corresponding pump for the extracted gas. If the gas contains steam, particles and corrosive gas, it should be considered to install auxiliary equipment such as condenser and dust collector on the air inlet pipeline of the pump. When choosing oil seal vacuum pump, the influence of oil vapor (oil fume) discharged from vacuum pump on environment should be considered. If the environment does not allow pollution, oil-free vacuum pump should be selected, or the oil vapor should be discharged to the outdoor. If the process is not allowed, the pump without vibration should be selected or anti vibration measures should be taken.
CL Sereis Cone Liquid Ring Vacuum Pump
Roots Blowers
Roots Vacuum Pump
RE: vacuum pump for vacuum equipment selection basis - vostov - 21 Jan 2021
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RE: vacuum pump for vacuum equipment selection basis - vostov - 15 Mar 2021
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RE: vacuum pump for vacuum equipment selection basis - vostov - 04 Jul 2021
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RE: vacuum pump for vacuum equipment selection basis - vostov - 08 Nov 2021
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RE: vacuum pump for vacuum equipment selection basis - vostov - 26 Jul 2022
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RE: vacuum pump for vacuum equipment selection basis - vostov - 15 Jun 2023
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RE: vacuum pump for vacuum equipment selection basis - vostov - 01 Feb 2024
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