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Your present location:Products >> ZJ-type tri-lobe Roots vacuum pump >> ZJ-type tri-lobe Roots vacuum pump
  • Name: ZJ-type tri-lobe Roots vacuum pump
  • Number: 003
  • Time: 2016-03-16

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Overview

Roots vacuum pump has a pair of tri-lobe rotors driven by a pair of high precision synchro-gears. The left figure illustrates 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 used with many fore pumps with 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 pump have obvious advantages over the traditional roots pumps of two-lobe rotors in the key performance indicators such as the pumping efficiency, maximum differential pressure, temperature rise, vibration and noise. High precision gears and rolling bearings ensure low noise and smooth operation of rotors, and it has relatively large pumping rate at low suction pressure.

 

Main charateristics

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

●Simple structure results in the higher reliablity and ease of use.

●O-ring static and plannar seals ensure the multiple assembly and disassembly.

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

 

Application

Tri-lobe roots pumps can be only used with other fore pumps. Equiped with different fore pumps, they have various performance. Roots vacuum pumps mainly are used in the situation of large pumping speed and rough/medium vacuum (103~10-2Pa). Typical applications are the vacuum film coating, vacuum welding furnace, vacuum heat treatment furnace, and large space simulation test, and microelectronics and integrated circuit and bulb production, vacuum packaging, and concentrated gas pumping system, and various chemical processing, and vacuum steam discharge, and vacuum dehydration, and vacuum frozen drying, and vacuum distillation.

 

Specifications

MODEL PUMPING RATE(L/S) ULTIMATE PRESSUER(Pa) MAX.Pre.Diff(Pa) POWER(KW) MOTOR SPEED(rpm) SUCTION(mm) DISCHARGE(MM) WEIGHT(kg) Recom.FORE PUMP
ZJ-70 70 ≤0.05 ≥1.2*104 1.5 2900 80 50 58 2x-15
ZJ-150 150 ≤0.05 ≥1.2*104 3 2900 100 80 136 2x-30
ZJ-300 300 ≤0.05 ≥1*104 4 2900 150 100 231 2x-70
ZJ-600 600 ≤0.05 ≥8*103 5.5(7.5) 2900 200 150 485 ZJ-150 2X-30
ZJ-1200 1200 ≤0.05 ≥6*103 11 2900 250 200 860 ZJ-300 2X-70
ZJ-2500 2500 ≤0.05 ≥5*103 18.5 2900 350 250 1550 ZJ-600 H-150
ZJ-5000 5000 ≤0.05 ≥4*103 37 1450 400 350 3200 ZJ-1200 H-150
ZJ-10000 10000 ≤0.05 ≥3*103 55 1450 500 400 5800 ZJ-1200 H-150
ZJ-20000 20000 ≤0.05 ≥3*103 110 1450 600 500 12000 ZJ-1200 H-150

Note:The performance specification in the above table are measured under the given condition with the recommended fore pump.When equipped with different fore pumps,they have various performance.Pumping rate is measured in the given condition with the pump inlet pressure of about 67 pa to 2.67 pa.Ultimate pressure means the measured stable sub-pressure of air in the closed pump inlet without any container by a compression type vacuum meter.
 

Performance curve

 

Dimensions

MODEL L L1 L2 L3 H H1 H2 H3 A A1 A2 D D1 D2 N-M d d1 d2 n-Ф
ZJ-70 729 190 100 151 230 212 \ 0 \ \ 220 Ф80 Ф125 Ф145 8-M8 Ф50 Ф90 Ф110 4-Ф8
ZJ-150 938 273 132 184 347 330 116.5 30 392 358 300 Ф100 Ф145 Ф165 8-M8 Ф80 Ф125 Ф145 8-Ф8
ZJ-300 1056 328 185 255 419 400 135 40 463 428 360 Ф150 Ф200 Ф25 8-M10 Ф100 Ф145 Ф165 8-Ф8
ZJ-600 1282 405 220 304 528 505 175 45 587 548 460 Ф200 Ф260 Ф285 12-M10 Ф150 Ф200 Ф225 8-Ф10
ZJ-1200 1573 473 300 392 649 625 218.5 58 722 648 560 Ф250 Ф310 Ф335 12-M10 Ф200 Ф260 Ф285 12-Ф10
ZJ-2500 1890 594 440 552 750 720 220 55 858 810 700 Ф320 Ф395 Ф425 12-M12 Ф250 Ф310 Ф335 12-Ф10
ZJ-5000 2630 865 820 960 950 925 \ 55 \ \ 720 Ф400 Ф495 Ф540 16-Ф22 Ф350 Ф445 Ф490 16-Ф22
ZJ-10000 2980 987 1070 1235 1160 1120 435 45 1416 1330 1000 Ф500 Ф600 Ф645 20-Ф22 Ф400 Ф495 Ф540 16-Ф22
ZJ-20000 4575 1915 1400 1900 1800 1600 550 100 2060 2000 1550 Ф600 Ф720 Ф750 24-M28 Ф500 Ф600 Ф650 16-Ф28
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