China Industrial Screw Vacuum Pump Unit - Leading Suppliers and Factory for High-Efficiency 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
Independently manufactured
Independently manufactured, with over 40 vacuum-related patents, rated as a national high-tech enterprise and a science and technology enterprise, has passed ISO9001 quality management system certification
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 |
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 of ≤1 Pa and ≤0.1 Pa mean for these vacuum units?
The limiting pressure refers to the lowest pressure the vacuum unit can achieve under ideal, no-load conditions. Models rated at ≤1 Pa are suitable for general high-vacuum applications, while those rated at ≤0.1 Pa are designed for more demanding processes that require an ultra-high vacuum environment, typically achieved by adding an additional middle pump stage.
Q
How do I select the right JZJLG vacuum unit model for my application?
Selection should be based on your actual process requirements, including the required vacuum level (limiting pressure), the volume of the system to be evacuated, the gas load (gas release rate), and the time required to reach the target pressure. It is recommended to perform detailed calculations based on the actual vacuuming process and gas release characteristics, or to consult with an engineer referencing the conditions of existing similar equipment.
Q
What is the role of the main pump, middle pump, and pre-stage pump in the vacuum unit?
In a multi-stage vacuum system, each pump serves a specific role. The pre-stage pump (e.g., LGB series) creates the initial rough vacuum. The main pump (e.g., ZJP or ZJ series Roots pumps) then boosts the pumping speed significantly at medium vacuum levels. The middle pump, present in models targeting ≤0.1 Pa, provides an additional intermediate stage to achieve deeper vacuum levels before the main pump operates at peak efficiency.
Q
Why do some models with the same vacuum extraction rate have different total motor power ratings?
Models with the same nominal vacuum extraction rate (e.g., 300 L/S) may differ in total motor power because they use different pre-stage pumps or pump configurations. For example, JZJLG300-1 uses a larger LGB200 pre-stage pump (22.5 KW), while JZJLG300-2B uses a smaller LGB120 (15 KW). The choice depends on the specific gas load and process pressure range required by the application.
Q
Can the standard series models listed in the table be customized for special working conditions?
Yes. The table represents a recommended standard series, but actual production conditions often vary significantly. Factors such as changes in intake gas composition, non-condensable gas condensation, and varying intake pressure over time may require a customized pump combination. It is advisable to consult with the manufacturer to tailor the unit configuration to your specific process requirements.
Q
What industries or applications are these JZJLG vacuum units typically used for?
JZJLG series vacuum units, combining Roots pumps with liquid ring or rotary vane pre-stage pumps, are widely used in industries such as vacuum metallurgy, chemical processing, pharmaceutical manufacturing, semiconductor fabrication, vacuum drying, vacuum impregnation, and other processes that require stable, high-efficiency vacuum environments across a wide pressure range.