China Industrial Screw Vacuum Pump Unit - Oil-Free Vane Pump Suppliers & Factory for High-Performance Solutions
01
High vacuum
Ultimate vacuum ≤ 1Pa
02
High pumping speed
Pumping capacity 70L/S - 20000L/S
03
Energy saving
Motor power 5.5KW - 180KW
04
Oil-free and water-free dry operation
Oil-free and water-free dry operation, environmentally friendly and emission reduction, 100% solvent recovery;
Product Parameters
| Unit Model | Limiting Pressure (Pa) | Vacuum Extraction Rate (L/S) | Main Pump | Middle Pump | Pre-stage Pump | Total Motor Power (KW) |
|---|---|---|---|---|---|---|
| JZJLG70-1 | ≤1Pa | 70 | ZJP70 | - - | LGB50 | 7 |
| JZJLG150-2 | 150 | ZJP150 | - - | LGB80 | 10.5 | |
| JZJLG150-1 | 150 | ZJP150 | - - | LGB120 | 14 | |
| JZJLG300-1 | 300 | ZJP300 | - - | LGB200 | 22.5 | |
| JZJLG300-2A | 300 | ZJP300 | - - | LGB150 | 19 | |
| JZJLG300-2B | 300 | ZJP300 | - - | LGB120 | 15 | |
| JZJLG600-2 | 600 | ZJP600 | - - | LGB200 | 26 | |
| JZJLG150-2.1 | ≤0.1Pa | 150 | ZJP150 | ZJP70 | LGB50 | 10 |
| JZJLG300-2.1 | 300 | ZJP300 | ZJP150 | LGB120 | 18 | |
| JZJLG600-2.2 | 600 | ZJP600 | ZJP300 | LGB150 | 26.5 | |
| JZJLG1200-2.2 | 1200 | ZJ1200 | ZJP600 | LGB200 | 37 | |
| JZJLG2500-4.2 | 2500 | ZJ2500 | ZJP600 | LGB200 | 48 |
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Explanation: The table represents the recommended standard series. Due to the varying working conditions in actual production applications, the intake gas and pressure will undergo many changes. Therefore, during the selection process, calculations should be conducted based on the actual vacuuming process, gas release process, condensation of non-condensable gases, changes in intake pressure over time, etc., or the selection should be made by referring to the usage conditions of existing equipment.
❓ Frequently Asked Questions
Q
What is the difference between units with a limiting pressure of ≤1Pa and ≤0.1Pa?
✔
Units with ≤1Pa limiting pressure typically use a two-stage configuration (main pump + pre-stage pump) and are suitable for general vacuum applications. Units with ≤0.1Pa include an additional middle pump stage, achieving a deeper vacuum level for more demanding industrial processes.
Q
How should I select the appropriate JZJLG unit model for my application?
✔
Selection should be based on your required vacuum extraction rate (L/S), the target limiting pressure, the nature of the intake gas, gas release characteristics, condensation conditions, and how intake pressure varies over time. It is also recommended to refer to existing equipment with similar working conditions.
Q
What does the vacuum extraction rate (L/S) indicate in these units?
✔
The vacuum extraction rate (measured in liters per second) indicates the volume of gas the unit can remove from the system per second. A higher extraction rate means the unit can evacuate larger volumes or achieve the target vacuum level more quickly.
Q
Why do some models with the same extraction rate have different total motor power?
✔
Models with the same extraction rate may use different pre-stage pumps (e.g., LGB120 vs. LGB200), which have different power ratings. The choice of pre-stage pump affects the overall system power consumption, efficiency, and suitability for specific working pressure ranges.
Q
Are the models in the table the only available configurations?
✔
No. The table lists only the recommended standard series. Since actual working conditions vary widely — including differences in gas composition, pressure fluctuations, and process requirements — custom configurations can be designed based on a detailed analysis of your specific vacuuming process.
Q
What role does the pre-stage pump play in the vacuum unit system?
✔
The pre-stage pump (e.g., LGB series) serves as the backing pump that maintains the discharge pressure for the main Roots pump (ZJP/ZJ series). It removes the gas compressed by the main pump and exhausts it to atmosphere, enabling the main pump to operate efficiently within its designed pressure range.