China Industrial Screw Vacuum Pump Unit - Leading Suppliers & Factory for High-Performance 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.
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Frequently Asked Questions
Q
What does the limiting pressure specification (≤1 Pa or ≤0.1 Pa) mean for these vacuum pump units?
The limiting pressure indicates the lowest achievable pressure that the vacuum pump unit can reach under ideal conditions. Units rated at ≤1 Pa are suitable for standard high-vacuum applications, while units rated at ≤0.1 Pa — which include a middle pump stage — are designed for ultra-high vacuum processes requiring deeper vacuum levels.
Q
How do I select the right 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, the nature of the intake gas, gas release characteristics, and how intake pressure changes over time. It is also recommended to reference the working conditions of similar existing equipment in your facility.
Q
What is the role of the middle pump in certain unit configurations?
The middle pump acts as an intermediate booster stage between the main pump and the pre-stage pump. It is included in configurations designed to achieve a limiting pressure of ≤0.1 Pa, enabling the system to reach deeper vacuum levels by providing additional compression between the main and pre-stage pumps.
Q
Why do some models with the same vacuum extraction rate have different total motor power ratings?
Models with the same extraction rate may use different pre-stage pump configurations (e.g., LGB120 vs. LGB150 vs. LGB200), which have varying motor power requirements. The choice of pre-stage pump depends on the specific process conditions, such as gas load and operating pressure range, resulting in different total power consumption.
Q
Are these unit models suitable for handling condensable gases or corrosive vapors?
The standard series listed in the table is designed for typical industrial vacuum processes. If your application involves condensable gases, corrosive vapors, or large amounts of water vapor, additional measures such as gas ballast, condensers, or special material configurations may be required. It is advised to consult with the manufacturer for customized solutions based on your specific gas composition.
Q
Can these vacuum pump units be customized beyond the standard series?
Yes. The table represents the recommended standard series configurations. Since actual production conditions vary widely — including differences in gas type, process pressure curves, and load requirements — custom configurations can be designed and calculated based on your specific vacuuming process, gas release behavior, and operational parameters.