Roots Vacuum Pump

Introduction:

The pump consists of two figures '8' shaped rotors and two semicircular pump houses. The rotors rotate synchronously in opposite directions and high speed. The pump generate vacuum from ATM it must be used as boosters combined with a backing pump such as a rotary piston or a rotary vane vacuum pump, or a liquid ring vacuum pump. These vacuum systems can get higher vacuum, a stable, fairly high pumping speed can be gained in effective pressure range.
The ultimate pressure of roots pump depends on the backing pump. The data of the list is lowest ultimate pressure with the standard equipment (equipped double stage oil mechanical vacuum pump).

Application:


The Roots pumps are widely used in vacuum molding, vacuum smelting, vacuum gas pumping, vacuum coating industry, vacuum distilling and vacuum drying of chemical and pharmaceutical industry etc. The dust can't be pumped by roots pumps.

FEATURES:

1 The lack of reciprocating parts allows a perfect dynamic balancing, because the roots are processed by numerical control machine tool and balanced carefully. It has perfect geometry symmetry. There is certain clearance between the two rotors. The pump house and end-cover is processed by especial machine tool. It has high precision. So the pump own feature of stable operation, low noise, low vibration and high ultimate pressure.
2. The robust drive of pump and operating parts balanced carefully permit that the pump be stably operated continuously under the condition of high different pressure.
3. They can be started quickly, and in short time ultimate pressure is reached.
4. Lubrication is unnecessary as there is no contact between rotors, rotors and house that avoid oil vapor from polluting vacuum system.
5. Good reliability characteristic. Their inherent overflow valve play auto-protective role.
6. Compact structure, low footprint design. There are three gas outlet ports that are in left, right and under pump house. It is convenient for consumer installing.

TECHNICAL DATA

Model

Pumping speed

Inlet diam

Outlet diam

Max permissable
Diff pressure

Rotary speed

Motor power

Weight

Recommended Backing Pump

mbar

L/S

mm

mm

pa

mbar

r/min

Kw

Kg

 

ZJ-30

0.05

30

50

50

8000

60

2980

1.1

87

2XZ-4/2XZ-8

ZJ-70

0.05

70

80

80

8000

60

2980

1.1

87

2XZ-8/2X-15

ZJ-150

0.05

150

100

100

8000

60

2980

2.2

195

2H-30

ZJ-300

0.05

300

150

150

6000

45

2980

4

270

2H-70

ZJ-600

0.05

600

200

200

4500

34

2980

7.5

760

2H-70/H-150

ZJ-1200

0.05

1200

250

200

4000

30

2980

11

845

ZJ-600/2H-70

ZJ-2500

0.05

2500

320

320

3000

22.5

2980

22