China Industrial Screw Vacuum Pump Unit - Top Suppliers & Factory for Enhanced Vacuum Solutions
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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 | ≤1 Pa | 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 | ≤0.1 Pa | 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 does the limiting pressure value in the JZJLG vacuum unit series indicate?
The limiting pressure refers to the lowest achievable pressure under ideal conditions. Units in this series operate at either ≤1 Pa or ≤0.1 Pa, indicating the ultimate vacuum level the system can reach during normal operation.
Q
What is the difference between models with ≤1 Pa and ≤0.1 Pa limiting pressure?
Models with ≤0.1 Pa limiting pressure include an additional middle pump (e.g., ZJP70, ZJP150, ZJP300, ZJP600) in the pumping system. This extra stage allows the unit to achieve a significantly deeper vacuum, making it suitable for more demanding industrial processes.
Q
How should I select the right JZJLG unit model for my application?
Selection should be based on your specific process requirements, including the required vacuum level, gas load, gas release rate during the process, condensation behavior of non-condensable gases, and how intake pressure changes over time. It is also recommended to reference the usage conditions of similar existing equipment in comparable applications.
Q
What is the role of the pre-stage pump (LGB series) in the vacuum unit?
The pre-stage pump (LGB series) acts as the backing pump in the system. It maintains the outlet pressure of the main Roots pump within the required range, enabling the entire vacuum unit to operate efficiently and reach the target vacuum level.
Q
Can the standard series configurations be customized for special working conditions?
Yes. The table lists recommended standard configurations. Since actual production conditions vary — including differences in gas composition, pressure fluctuations, and process requirements — customized configurations can be designed based on detailed process calculations to ensure optimal performance and reliability.
Q
What is the highest vacuum extraction rate available in this series, and what power does it require?
The highest vacuum extraction rate in this standard series is 2500 L/S, offered by the JZJLG2500-4.2 model. It achieves a limiting pressure of ≤0.1 Pa and requires a total motor power of 48 KW, utilizing a ZJ2500 main pump, ZJP600 middle pump, and LGB200 pre-stage pump.