When using a pump can not
meet the requirements of pumping and vacuum, several pumps need to be combined
to complement each other to meet the process requirements. The combined vacuum
pump is called vacuum pump unit. The vacuum pump unit can make the vacuum system
obtain better vacuum degree and exhaust volume, and the vacuum pump unit with
high adaptability can make the working condition application obtain high
application efficiency. Therefore, we should select the vacuum pump unit
correctly.
The application of vacuum pump unit needs to make
corresponding preparations, such as the selection and assembly of vacuum pump
unit.
The vacuum pump unit shall be selected and applied according to
the medium conditions, environmental requirements and working condition
specifications of the application project. When extracting the gas, it is
necessary to know the composition of the gas and the composition of the
extracted gas. The gas contains no condensable steam, whether there is particle
dust, whether there is corrosiveness, etc. Select the appropriate pump for the
extracted gas. If the gas contains steam, particles and corrosive gas, auxiliary
equipment, such as condenser, dust remover, etc., shall be installed on the air
inlet pipeline of vacuum pump unit.
When using the vacuum pump unit with
oil seal vacuum pump, it is necessary to determine whether the vacuum system has
requirements for oil pollution. If the equipment is strictly oil-free, all kinds
of oil pumps should be selected, such as: water ring pump, low temperature pump,
etc. In addition, the impact on environmental pollution should be considered. If
the environment is not allowed to be polluted, the oil-free vacuum pump should
be selected, or the oil vapor should be discharged to the outdoor. If the
requirements are not strict, oil pump can be selected, and some anti oil
pollution measures, such as adding cold well, oil trap, baffle, etc., can also
meet the requirements of clean vacuum.
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