Oil-Free Screw Vacuum Pump Technology by Leading China Suppliers and Factory - High Performance and Stability
01
Simple and compact structure
Composed of counter-rotating screws, pump body, end cover, sealing components, etc., the structure is very simple
Composed of counter-rotating screws, pump body, end cover, sealing components, etc., the structure is very simple
02
Dry operation
Dry operation, no need for any working medium, thus no oil pollution, no wastewater discharge, and significant energy-saving effect
Dry operation, no need for any working medium, thus no oil pollution, no wastewater discharge, and significant energy-saving effect
03
No friction in the pumping chamber
There is a certain gap between the screw and the pump body
There is a certain gap between the screw and the pump body
04
Can be combined with Roots pumps to form a vacuum system
Can be combined with Roots pumps to form a vacuum system, achieving higher ultimate vacuum degree and increasing pumping speed
Can be combined with Roots pumps to form a vacuum system, achieving higher ultimate vacuum degree and increasing pumping speed
Product Parameters
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| Model Number | Vacuum Extraction Rate (L/S) | Power (KW) | Limiting Pressure (Pa) | Speed (rpm) | Cooling Water (L/min) |
|---|---|---|---|---|---|
| LGB-10 | 10 | 1.1 | 5 | 2900 | 0 |
| LGB-15 | 15 | 1.5 | 5 | 2900 | 0 |
| LGB-20 | 20 | 2.2 | 5 | 2900 | 0 |
| LGB-50 | 50 | 5.5 | 5 | 2900 | 8 |
| LGB-80 | 80 | 7.5 | 5 | 2900 | 10 |
| LGB-120 | 120 | 11 | 5 | 2900 | 12 |
| LGB-150 | 150 | 15 | 5 | 2900 | 14 |
| LGB-200 | 200 | 18.5 | 5 | 2900 | 18 |
| LGB-220 | 220 | 22 | 5 | 2900 | 20 |
| LGB-300 | 300 | 30 | 5 | 2900 | 25 |
| LGB-400 | 400 | 37 | 5 | 2900 | 30 |
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Frequently Asked Questions
Q
What is the vacuum extraction rate range available in the LGB series?
A
The LGB series offers vacuum extraction rates ranging from 10 L/S (LGB-10) up to 400 L/S (LGB-400), providing a wide selection to suit various industrial application requirements.
Q
What is the limiting pressure for all LGB series models?
A
All models in the LGB series share a consistent limiting pressure of 5 Pa, ensuring reliable and stable vacuum performance across the entire product range.
Q
Do all LGB models operate at the same speed?
A
Yes, all LGB series models operate at a standard speed of 2900 rpm, which ensures consistent rotational performance and reliable vacuum generation across all model sizes.
Q
Which LGB models require cooling water, and how much is needed?
A
Models LGB-10, LGB-15, and LGB-20 do not require cooling water (0 L/min). Starting from LGB-50 and above, cooling water is required, ranging from 8 L/min (LGB-50) up to 30 L/min for the LGB-400 model.
Q
How does power consumption scale with the vacuum extraction rate in the LGB series?
A
Power consumption increases proportionally with the vacuum extraction rate. For example, the LGB-10 uses 1.1 KW for 10 L/S, while the LGB-400 requires 37 KW to achieve 400 L/S, allowing users to select the most energy-efficient model for their needs.
Q
Which LGB model is recommended for medium-scale industrial vacuum applications?
A
For medium-scale applications, the LGB-120 or LGB-150 models are commonly recommended. They offer vacuum extraction rates of 120–150 L/S with power consumption of 11–15 KW and moderate cooling water requirements of 12–14 L/min, making them well-suited for a broad range of industrial processes.