Dry vacuum pump unit-JJZJLG series Roots screw dry pump vacuum unit is made up of ZJ type Roots pump as the main pump and LG series screw vacuum pump as the dry oil-free vacuum unit composed of the front stage pump. JZJLG series Roots screw dry pump vacuum unit is more suitable for working under low pressure than single screw vacuum pump. For example: a vacuum distillation process requires pumping speed of 150L/s, working pressure is 1000Pa, and JZJLG150-4 vacuum unit (7kW) is selected. ), it is more energy efficient than using a single LG180 screw vacuum pump (18.5kW) and the unit can reach a lower limit pressure.
Since the main pump and the foreline pump both use dry vacuum pumps, the JZJLG series Roots screw dry pump vacuum unit has the following main features:
There is no oil in the pump chamber, no pollution to the pumped system, and a clean vacuum can be obtained.
There is no oil in the pump chamber and it is very easy to recover the solvent.
The Roots pumping chamber is completely nickel-plated, and the screw pump chamber is coated with nickel or PTFE coating to remove water vapor, solvent gas and various corrosive media.
Because there is no waste oil and wastewater discharge during the work, there is no pollution to the environment.
The requirements for cooling water are low. For the cooling of the pump, ordinary circulating water can meet the requirements, and the amount of cooling water is small.
The main pump of the unit adopts the JZ series Roots vacuum pump developed by our company. The JZ series Roots vacuum pump which improves the sealing of the pump chamber and the bearing chamber is used in the process of pumping a large amount of water vapor and various solvents. Oil is not easily emulsified.
