oil free permanent magnet variable frequency screw blower

The permanent magnet frequency conversion oil-free screw blower offers superior efficiency and significant energy savings compared to traditional Roots blowers, thanks to its oil-free design and advanced motor technology. This blower is ideal for applications demanding high air cleanliness and low operating costs, avoiding the risk of oil contamination and reducing overall maintenance.

Technical Parameters

• Pressure range: 0.5 to 1.5 bar
• Power range: 22 to 110 kW
• Air volume range: 24.1 to 82.2 m³/min

Main Features

1. Oil-free design: Advanced screw compression technology eliminates oil contamination, ensuring clean, high-quality air output.
2. Ultra-high efficiency permanent magnet motor: Features ultra-thin silicon steel sheets, low temperature rise, low noise, and IP55 protection level for reliable operation in dusty or humid environments. Motor efficiency is 8–10% higher than traditional motors, leading to substantial energy savings.
3. Low noise construction: Robust 2mm sheet metal and 6mm thick steel plate chassis minimize vibration. High-density dustproof design, labyrinth air intake, and mufflers further reduce noise. Optional ultra-low noise silencer available.
4. High-efficiency air intake filter: Imported filter material filters 99.9% of particles below 1μm, ensuring clean airflow and extending equipment life.
5. Oil-free screw blower mainframe: Mature double-screw internal compression technology delivers smooth, efficient, and continuous airflow. Energy savings reach 35–50% compared to Roots blowers.
6. Simple and low-cost maintenance: Only periodic replacement of the air filter (every 4,000 hours) and gear oil (every 8,000 hours) required, drastically reducing downtime and costs.
7. Cloud control system: Real-time operation data, early warning, maintenance scheduling, remote diagnostics, and energy-saving mode settings for smart management.
8. Intelligent frequency conversion control: Equipped with Huichuan heavy-duty vector frequency converter and Siemens control components for stable, efficient, and energy-saving operation.

Working Principle

The blower uses dual screw rotors to compress air in an oil-free environment. The motor, controlled by an intelligent frequency converter, adjusts speed according to actual demand, ensuring optimal energy utilization and reducing operational noise. No lubricants are required, making the process cleaner and more efficient than traditional Roots blowers.

Application Areas

• Sewage treatment: Provides efficient airflow for oxidation and reduction reactions in wastewater treatment for printing, dyeing, chemical, leather, pharmaceutical, and papermaking industries.
• Exhaust gas treatment: Supplies oxygen for desulfurization in thermal power and cement plants, reducing SO₂ emissions and air pollution.
• Industrial production: Ensures stable airflow in nonwoven, printing, elastic fiber, and other manufacturing processes to improve efficiency.
• Breeding industry: Supplies oxygen to farms, promoting healthy animal growth and optimal breeding environments.
• Electroplating industry: Delivers stable, oil-free airflow to electroplating tanks, ensuring consistent quality in electroplating processes.
• Other industrial applications: Suitable for chemical, food processing, mining, and other sectors needing stable, clean, and low-noise airflow.