ZJP series Roots vacuum pump, is a positive displacement vacuum pump, it is a pair of 8 shape rotor in the pump housing to maintain a certain gap, for equal speed reverse rotation to produce suction and exhaust action.
The main features
ZJP series roots vacuum pump is one of the biggest advantages in low inlet pressure has high extraction rate, with automatic overload protection, but it cannot be used alone, there must be a front stage vacuum pump series, the pressure in the stay by the pumping system is the front-end of the roots vacuum pump vacuum pump to allow inlet pressure, the roots vacuum pump can begin to work, and in the general case, roots vacuum pump is not allowed to work when high pressure difference, otherwise it will overload and overheating and damage, so when using the roots vacuum pump must be reasonably choose the former vacuum pump, install the necessary protection equipment.
The front stage vacuum pump is generally an oil seal mechanical pump, but if the limit pressure requirements are not high, can choose other forms of crude vacuum pump as the front stage pump. Especially in the extraction of gas containing a lot of water vapor, water ring vacuum pump as the front pump is very ideal, of course, the ultimate pressure can be achieved to lower.
Main Technical indicators
Ultimate vacuum: 5×10¯ Pa (with front stage pump); Maximum allowable pressure difference: 5000 ~ 8000Pa
Flow rate: 30 ~ 2500L/S (1.8 ~ 150m /min)
Shaft power: 1.1 ~ 22kW