High-Speed Roots Vacuum Pump Operation - China Suppliers & Factory for Enhanced Performance and Efficiency
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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 |
Frequently Asked Questions
Q
What is the difference between the ZJP series and the ZJ series models?
The ZJP series (ZJP-30 to ZJP-600) covers smaller to mid-range suction rates from 30 L/S up to 600 L/S, while the ZJ series (ZJ-1200 to ZJ-5000) is designed for higher-capacity applications with suction rates ranging from 1200 L/S to 5000 L/S. The ZJ series also features larger intake and exhaust diameters and higher motor power to handle greater throughput.
Q
Which model should I choose for a high-vacuum application requiring at least 500 L/S?
For applications requiring a suction rate of at least 500 L/S, the ZJP-600 model is the most suitable entry point in this table, offering a maximum suction rate of 600 L/S with a 7.5 kW motor. If your process demands significantly higher capacity, consider the ZJ-1200 or above.
Q
How does motor power relate to the suction rate across these models?
There is a clear positive correlation between motor power and suction rate. For example, the ZJP-30 and ZJP-70 both use a 1.5 kW motor, while the ZJ-5000 requires a 37 kW motor to achieve its 5000 L/S suction rate. Selecting the correct motor power ensures efficient operation and prevents overloading.
Q
What noise levels can be expected from these pumps during operation?
Noise levels range from ≤78 dB(A) for the smaller ZJP-30 and ZJP-70 models up to ≤88 dB(A) for the largest ZJ-5000 model. Appropriate hearing protection and soundproofing measures are recommended for continuous operation, especially for models rated above 85 dB(A).
Q
Why do most models in this series operate at speeds around 2880–2940 r/min?
Most models operate near synchronous speeds of 2880–2940 r/min because they are driven by standard 2-pole AC motors running at 50 Hz, which have a synchronous speed of 3000 r/min. The slight reduction accounts for motor slip under load. The ZJP-30 is an exception, running at 1420 r/min, indicating it uses a 4-pole motor for lower-speed, quieter operation.
Q
What pipe sizes are required for installation of the ZJ-2500 and ZJ-5000 models?
The ZJ-2500 requires a 300 mm intake diameter pipe and a 250 mm exhaust pipe diameter. The ZJ-5000 uses both 400 mm intake and 400 mm exhaust pipe diameters. Ensuring correct pipe sizing during installation is critical to achieving rated performance and avoiding pressure losses or mechanical stress on the connections.