Integrated dry vacuum pump

Tri-lobe Air-Cooled Roots Vacuum Pump

Gas recirculating cooled roots vacuum pump consists of a pair of rotors, pump housing , cooler, etc. Cooled air from the both sides of the pump housing enters into the pump chamber for cooling the rotors in order to avoid the pump overheating without any effect on its pumping performance. Performance of pumping rate, noise and vibration are significantly improved than two-lobe pumps. The rotors of gas-cooled Roots pump take the involute profile, and rotate without contact and keep a constant gap in-between. Due to this special and patented structure, gas-cooled Roots pump can maintain the long-term reliable operation in high pressure differential and high compression ratio. Gas-cooled vacuum pump can be used alone or in series, or combined with other vacuum pumps to achieve higher vacuum and meet kinds of requirements.

Features Specifications Application

1.Multiple serial pumps or with other fore pumps can achieve the medium vacuum.
2.Oil-free design is suitable for pumping the air and many special gases.
3.Special patented structure avoids the overheating and overload in high pressure differential and high compression ratio.
4.Tri-lobe rotors with involute profile and high maching accuracy ensure the smooth and quiet operation.

Specification	Unit	ZJQ-150	ZJQ-300	ZJQ-600	ZJQ-1200	ZJQ-3750	ZJQ-5000	ZJQ-10000	ZJQ-20000
Max pumping speed	L/S	150	300	600	1200	3750	5000	10000	20000
Ultimate pressure	Pa	15000	15000	15000	15000	15000	15000	15000	15000
Power	Kw	3-18.5	5.5-37	7.5-75	11-132	22-280	37-500	55-1000	110-2000
Rotational speed	RPM	2900	2900	1460	980	1470	1470	1470	1470
Inlet & Outlet Port	DN mm	80/80	125/125	250/250	300/300	350/350	400/350	500/400	600/500
Bare pump weight	kg	237	854	1350	2300	2300	3200	5800	12000

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