Integrated dry vacuum pump

Tri-lobe Roots Vacuum Pump

Roots vacuum pump has a pair of tri-lobe rotors driven by a pair of high precision synchro-gears. The tri-lobe rotors finish one cycle of suction and discharge during 120 degrees. The tri-lobe rotors of involute profile rotate without contact and keep a constant gap in-between. It can be worked with various fore pumps by using air or water cooling mode and different sealing types in order to meet the various processing requirements and working conditions. Due to this patented design, our Roots vacuum pumps have obvious advantages over the traditional roots pumps of two-lobe rotors in the key performance indicators such as the pumping efficiency, maximum pressure differential, temperature rise, vibration and noise.

Features Specifications Application

1.High rotation speed, volumetric efficiency, less temperature rise and vibration.

2.Simple structure results in the higher reliability and ease of use.

3.Mechanical seal, lip seal, frame seal, piston ring seal and labyrinth seal can be selected for face sealing.

Specification	Unit	ZJ-70	ZJ-150	ZJ-300	ZJ-600	ZJ-1200	ZJ-2500	ZJ-5000	ZJ-10000	ZJ-20000
Pumping speed	L/S	70	150	300	600	1200	2500	5000	10000	20000
Ultimate pressure	Pa	≤0.05	≤0.05	≤0.05	≤0.05	≤0.05	≤0.05	≤0.05	≤0.05	≤0.05
Max.Pre.Diff	Pa	≥ 1.2x104	≥ 1.2x104	≥ 1x104	≥ 8x103	≥ 6x103	≥ 5x103	≥ 4x103	≥ 3x103	≥ 3x103
Power	Kw	1.5	3	4	5.5（7.5）	11	18.5	37	55	110
Rotational speed	RPM	2900	2900	2490	2490	2490	2490	1450	1450	1450
Inlet & Outlet Port	DN mm	80/50	100/80	150/100	200/150	250/200	350/250	400/350	500/400	600/500
Weight	kg	58	136	231	485	860	1550	3200	5800	12000

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