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Your present location:Products >> ZJQ-type tri-lobe gas-cooled Roots vacuum pump >> ZJQ-type tri-lobe gas-cooled Roots vacuum pump
  • Name: ZJQ-type tri-lobe gas-cooled Roots vacuum pump
  • Number: 002
  • Time: 2016-03-16

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Overview

Gas recirculating cooled roots vacuum pump consists of a pair of rotors, pump housing, cooler, etc. Every 120 degrees in the rotation of the rotor completes a suction and a discharge operation in the whole working cycle. Cooled air from the both sides of the pump housing enters into the pump suction 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.34

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 difference and high compression ratio. Gas-cooled vacuum pump can be used alone or in series, or combined with other vacuum pumps for achieving higher vacuum to meet kinds of requirements.

 

Main charateristics

●Signle gas-cooled vacuum pump directly connecting to atm has the ultimate vacuum of 150 mbar.

●Multiple serial pumps or with other fore pumps can achieve the medium vacuum.

●Special patented structure avoids the overheating and overload in high pressure difference and high compression ratio.

●Tri-lobe rotors with involute profile with high machining accuracy ensure the smooth and quiet operation.

●Balanced mechanical seal in the pump is more reliable than other sealing.

●Oil-free design is suitable for pumping the air and many speical gases.

 

Specifications

MODEL ZJQ-150 ZJQ-300 ZJQ-600 ZJQ-1200 ZJQ-2500 ZJQ-3750 ZJQ-5000 ZJQ-10000 ZJQ-20000
MAX PUMPING RATE(L/s) 150 300 00 1200 2500 3750 5000 10000 20000
ULTIMATE PRESSURE(pa) 15000 15000 15000 15000 15000 15000 15000 15000 15000
ROTATE SPEED(rpm) 2900 2900 1460 1470 980 1470 1470 1470 1470
POWER(Kw) 3-18.5 5.5-37 7.5-75 11-132 22-280 30-400 37-500 55-1000 110-2000
SUCTION(mm) 80 125 250 300 350 350 400 500 600
DISCHARGE(MM) 80 125 250 300 350 350 350 400 500
BARE PUMP WEIGHT(Kg) 137 237 854 1350 2300 2300 3200 5800 12000

Note:Motor power and the cooler area of the pump are designed in accordance with the operating pressure differential,as the varisou pressuer differential can be configured with different motors and coolers.
 

Performance curve

 

Dimensions

MODEL DN DN1 A A1 A2 A3 B B1 B2 H H1 H2 Ф
ZJQ-150 80 80 554 280 55 132 358 300 210 330 120 30 32
ZJQ-300 125 125 652 325 60 185 428 360 240 405 135 25 42
ZJQ-600 250 250 965 492 90 296 678 560 370 630 210 58 60
ZJQ-1200 300 300 1236 642 117 440 790 660 450 715 230 45 85
ZJQ-2500 350 350 1530 785 153 580 1080 720 860 925 475 55 105
ZJQ-3750 350 350 1534 785 130 580 1080 720 860 925 475 55 105
ZJQ-5000 400 350 1798 930 154 820 1080 720 860 925 475 55 105
ZJQ-10000 500 400 2148 1085 152 1070 1360 1000 800 1120 310 40 105
ZJQ-20000 600 500 3500 2150 210 1400 2000 1550 1050 1800 550 100 150
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18006168180@elmvac.cn
 

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