China Industrial Screw Vacuum Pump Unit - High-Quality Suppliers & Factory for Enhanced Vacuum 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 | ≤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 (≤1 Pa or ≤0.1 Pa) mean in the JZJLG unit series?
The limiting pressure refers to the lowest achievable pressure that the vacuum unit can reach under ideal no-load conditions. Units with ≤1 Pa are suitable for standard industrial vacuum processes, while units with ≤0.1 Pa are designed for higher-precision applications requiring deeper vacuum levels, typically achieved through a three-stage pump configuration including a middle pump.
Q
What is the difference between the main pump, middle pump, and pre-stage pump in the vacuum unit?
The main pump (e.g., ZJP or ZJ series) is the primary Roots vacuum pump responsible for high-speed gas extraction. The middle pump serves as an intermediate booster stage to improve pumping efficiency in deeper vacuum applications. The pre-stage pump (e.g., LGB series) is a backing pump that maintains the outlet pressure required for the upstream pumps to operate effectively.
Q
How should I select the correct JZJLG unit model for my application?
Selection should be based on your actual process requirements, including the required vacuum extraction rate (L/S), the target limiting pressure (Pa), the type and volume of gases being evacuated, gas release rates within the chamber, and any condensable or non-condensable gas components. It is recommended to perform detailed process calculations or consult with a vacuum system engineer before making a final selection.
Q
Why does the same vacuum extraction rate (e.g., 300 L/S) have multiple unit models available?
Different models with the same extraction rate (such as JZJLG300-1, JZJLG300-2A, and JZJLG300-2B) use different pre-stage pump configurations (LGB200, LGB150, LGB120), resulting in different total motor power consumption and performance characteristics. The choice depends on your specific process conditions, energy efficiency requirements, and the nature of the gases being handled.
Q
What industries or applications are JZJLG vacuum units typically used for?
JZJLG Roots vacuum pump units are widely used in industries such as metallurgy, chemical processing, pharmaceutical manufacturing, electronics, food packaging, vacuum coating, and scientific research. They are particularly suitable for processes that require large-volume gas extraction combined with low ultimate pressures.
Q
Can the standard JZJLG series be customized for special working conditions?
Yes. The table represents the recommended standard series configurations. Since actual production conditions vary significantly — including differences in intake gas composition, pressure fluctuations, and process timing — custom configurations can be designed based on detailed process analysis. Users are encouraged to provide their specific operating parameters so that an optimized pump combination can be recommended.