China Air-Cooled Roots Vacuum Pump Suppliers - Factory Direct High-Performance Pump with 150 mbar Efficiency
01
Compared with other mechanical vacuum pumps, it saves 30% energy
02
The entire series is equipped with QT500 high-strength ductile iron rotors, with a tensile strength of 500 MPa and an elongation rate of 15%
03
The accessories are precisely processed by a machining center, and the gaps between the rotors and between the rotors and the pump body are strictly controlled to ensure that they are less than 0.05mm, ensuring stable operation
04
The spiral jacket cooling method, with excellent heat exchange efficiency, fully ensures the low-temperature lubrication performance of the lubricating oil, thereby extending the service life of gears, bearings and mechanical seals
Product Parameters
| Model Number | ZJQ-300 | ZJQ-600 | ZJQ-1200 | ZJQ-2500 | ZJQ-3750 | ZJQ-5000 |
| Maximum Suction Rate (L/S) | 300 | 600 | 1200 | 2500 | 3750 | 5000 |
| Limiting Pressure (Pa) | 15000 | 15000 | 15000 | 15000 | 15000 | 15000 |
| Speed (rpm) | 1480 | 1460 | 1470 | 1470 | 1470 | 1470 |
| Rated Power (KW) | 5.5～37 | 7.5～75 | 15～132 | 22～280 | 30～400 | 45～710 |
| Intake & Exhaust Diameters (mm) | 125 | 250 | 300 | 350 | 350 | 400 |
Note: The motor power of the pump, the heat exchange area of the cooler, and the water consumption are determined based on the actual working pressure difference. Different pressure differences require different motors and coolers, and the water consumption will also vary.
Frequently Asked Questions
Q
What is the maximum suction rate available in the ZJQ pump series?
The ZJQ pump series offers a maximum suction rate of up to 5000 L/S, available in the ZJQ-5000 model. The series ranges from 300 L/S (ZJQ-300) to 5000 L/S (ZJQ-5000) to accommodate various application requirements.
Q
What is the limiting pressure for all ZJQ pump models?
All models in the ZJQ series share a uniform limiting pressure of 15,000 Pa, ensuring consistent performance standards across the entire product range.
Q
How is the motor power determined for a specific ZJQ pump model?
The motor power is not fixed — it is determined based on the actual working pressure difference of the application. Each model provides a rated power range (e.g., ZJQ-1200: 15–132 KW), and the appropriate motor within that range is selected according to the specific operating conditions.
Q
Does the pressure difference affect the cooler and water consumption?
Yes. The heat exchange area of the cooler and the overall water consumption are both directly influenced by the actual working pressure difference. Higher pressure differences typically require larger coolers and greater water usage, so these parameters must be evaluated individually for each installation.
Q
What are the intake and exhaust diameter options across the ZJQ series?
The intake and exhaust diameters vary by model: 125 mm (ZJQ-300), 250 mm (ZJQ-600), 300 mm (ZJQ-1200), 350 mm (ZJQ-2500 & ZJQ-3750), and 400 mm (ZJQ-5000). Selecting the correct diameter is important for proper system integration and flow efficiency.
Q
What is the operating speed range of the ZJQ pump series?
The ZJQ pump series operates within a narrow speed range of approximately 1460–1480 rpm across all models, providing stable and reliable rotational performance regardless of the pump size selected.