The permanent magnet VSD oil-free screw blower is designed for industrial applications requiring high efficiency, stable airflow and continuous operation. It combines screw compression technology with permanent magnet variable-frequency control to deliver reliable low-pressure air while reducing energy consumption.

Compared with traditional Roots blowers, Ruihong’s screw blower can achieve more than 60% energy savings under suitable operating conditions.

Key Features

• Oil-Free Air Supply – Screw blower design provides clean compressed air without oil contamination.
• Permanent Magnet VSD Control – Automatically adjusts operating speed according to actual airflow demand.
• High Energy Efficiency – More than 60% energy saving compared with traditional Roots blowers under specified conditions.
• High Stability – Designed for continuous 24-hour operation.
• High-Efficiency Screw Airend – Internal compression technology improves airend performance by more than 30%.
• Lower Outlet Temperature – Outlet temperature can be approximately 20% lower than that of conventional Roots blowers.
• Low Pulsation – Smooth air delivery helps reduce vibration and extend service life.
• Low Noise – Screw compression provides quieter operation than traditional blower systems.
• High Airflow Capacity – Suitable for applications requiring continuous large-volume, low-pressure air.
• Remote Operation – Supports remote operation and linkage functions for easier system management.

Efficient Screw Compression

Unlike Roots blowers that rely mainly on external compression, the screw blower uses internal compression to improve operating efficiency and reduce energy loss.

The optimized screw rotor design provides smoother airflow, lower pulsation and more stable pressure, making it suitable for long-term industrial operation.

Typical Applications

Suitable for:

• Wastewater Treatment
• Sewage Aeration
• Pneumatic Conveying
• Cement Industry
• Chemical Processing
• Textile Industry
• Food Processing
• Power Plants
• Aquaculture
• General Industrial Air Supply

For applications requiring large airflow, low pressure and continuous operation, the permanent magnet VSD oil-free screw blower provides an energy-efficient and reliable alternative to traditional Roots blowers.