High-Speed Roots Vacuum Pump Operation - China Suppliers and Factory Direct Products
01
The entire series is equipped with QT500 high-strength ductile iron rotor, with a tensile strength of 500 MPa and an elongation rate of 15%.
02
The accessories are precisely manufactured by imported processing centers, with strict control of the gaps between rotors and between rotors and the pump body, ensuring stable operation when the gap is less than 0.05mm
03
The spiral jacket cooling method ensures excellent heat exchange efficiency, fully guaranteeing the low-temperature lubrication performance of the lubricating oil, thereby extending the service life of gears, bearings and mechanical seals.
04
A bypass valve is set inside, allowing the Roots vacuum pump and the preceding vacuum pump to almost simultaneously start under atmospheric conditions to shorten the pumping time.
Product Parameters
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| Model Number | Maximum Suction Rate (L/S) | Intake Diameter (mm) | Exhaust Pipe Diameter (mm) | Noise ≤dB(A) | Motor Power (kW) | Speed (r/min) |
|---|---|---|---|---|---|---|
| ZJP-30 | 30 | 80 | 50 | 78 | 1.5 | 1420 |
| ZJP-70 | 70 | 80 | 50 | 78 | 1.5 | 2840 |
| ZJP-150 | 150 | 100 | 80 | 81 | 3 | 2880 |
| ZJP-300 | 300 | 150 | 100 | 82 | 4 | 2890 |
| ZJP-600 | 600 | 200 | 150 | 84 | 7.5 | 2900 |
| ZJ-1200 | 1200 | 250 | 200 | 85 | 11 | 2940 |
| ZJ-2500 | 2500 | 300 | 250 | 87 | 22 | 2940 |
| ZJ-5000 | 5000 | 400 | 400 | 88 | 37 | 2940 |
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Frequently Asked Questions
Q
What is the difference between ZJP and ZJ series models?
A
The ZJP series (ZJP-30 to ZJP-600) are designed for lower to mid-range suction rates ranging from 30 to 600 L/S, while the ZJ series (ZJ-1200 to ZJ-5000) are engineered for higher-capacity applications with suction rates up to 5000 L/S, featuring larger intake and exhaust diameters and more powerful motors.
Q
Which model should I choose for a high-vacuum industrial application?
A
For high-vacuum industrial applications requiring large gas throughput, the ZJ-2500 or ZJ-5000 models are recommended. The ZJ-5000 offers the highest suction rate of 5000 L/S with a 37 kW motor, making it suitable for demanding industrial processes.
Q
What are the noise levels across the product range?
A
Noise levels range from ≤78 dB(A) for the smaller ZJP-30 and ZJP-70 models up to ≤88 dB(A) for the ZJ-5000. Smaller models are quieter and more suitable for noise-sensitive environments, while larger models may require appropriate sound insulation measures.
Q
What motor power is required for the ZJP-300 model?
A
The ZJP-300 model requires a 4 kW motor operating at a speed of 2890 r/min. It features a 150 mm intake diameter and a 100 mm exhaust pipe diameter, delivering a maximum suction rate of 300 L/S.
Q
Can these pumps be used in combination with other vacuum equipment?
A
Yes, these Roots vacuum pumps are commonly used in combination with backing pumps (such as rotary vane or oil-sealed pumps) to achieve deeper vacuum levels. The intake and exhaust diameters listed in the specifications help ensure compatibility when designing multi-stage vacuum systems.
Q
How do I determine the right intake and exhaust pipe diameter for installation?
A
The intake and exhaust pipe diameters are specified for each model in the table above. It is important to match your piping system to these dimensions to avoid flow restrictions and pressure drops. For example, the ZJ-1200 requires a 250 mm intake and 200 mm exhaust connection, while the ZJP-30 uses an 80 mm intake and 50 mm exhaust.