• Explosion proof
• Compact
• Built-in muffler
• unique tracking order for each fan. 
• three layer anti-corrossion painting. 
• largest diameter 5meters! 
• Each hub is annealed to remove internal stress.Durable enough. 
• Orthogonal 3D Twisted Blade Technology of Bend and Sweep Combination,Simulated Dune Principle. 
• In line with international standards, 1000: 1.5~2.5, to ensure that the impeller works more safely and efficiently. 

Product-related News:

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DECENT MACHINERY Welcomes Top Southeast Asian Copper Mining Enterprise for Strategic Cooperation Talks,New Partnership Secured



DECENT MACHINERY Forges Long-Term Strategic Partnership with Leading Southeast Asian Mining Conglomerate

The SDF(D4, D3) Energy-Saving Multi-Stage Axial Flow Fan is developed to meet the ventilation demands of long tunnel construction and underground mining projects. It is ideal for air circulation management in deep tunnels, highway and railway excavation, and industrial ventilation blower applications.
 

Key Features of SDF(D4, D3) Tunnel Ventilation Fan
 

• Advanced multi-stage axial flow design, ensuring powerful airflow acceleration and enhanced wind pressure.
• Counter-rotating impeller system, improving air distribution efficiency and minimizing turbulence.
• Low-noise operation, making it suitable for underground ventilation, mine fan applications, and industrial airflow control.
• High-efficiency airflow optimization, solving long-distance air supply challenges in tunnel excavation.
• Direct-drive motor configuration, providing enhanced stability, efficiency, and ease of maintenance.
• Customizable blade coating technology, meeting varied environmental and industrial requirements.
• Adaptable to high-altitude environments, ensuring consistent airflow in plateau conditions.

Installation and Operating

• Conditions Designed for efficient tunnel ventilation, underground mining, and industrial ventilation blower applications.
• Multi-stage counter-rotating impellers enhance air velocity and energy transfer, increasing operational efficiency.
• Suitable for deep underground construction, ensuring stable airflow supply over extended distances.
• Optimized for high-altitude regions, maintaining steady airflow performance in extreme environments.
• Built for energy-saving applications, reducing power consumption while maximizing airflow output.

Use and Maintenance Guidelines

1. 1. Pre-Startup Checks
   • Ensure all bolts, fasteners, and connection points are tightly secured.
   • Verify manual rotation of the impellers is smooth and free from resistance or noise.
   • Conduct a test run to check impeller rotation direction and airflow alignment.
   •  
2. 2. Operational Monitoring
   1. Inspect for loose connections, excessive vibration, and any abnormal noise during operation.
   2. Monitor motor temperature and bearing performance to prevent overheating and mechanical wear.
   3.  
3. 3. Scheduled Maintenance
   • Lubricate motor bearings every six months, ensuring optimal grease levels for smooth operation.
   • Replace acoustic insulation material every 6-12 months, if equipped with soundproofing technology.
   • Perform biannual inspections, ensuring all components are in proper working condition.
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4. 4. Storage and Preservation
   • Store the tunnel ventilation fan in a dry, well-ventilated space to prevent corrosion and material degradation.

The SDF(D4, D3) Series Multi-Stage Axial Flow Fan is a top-tier ventilation solution for underground mining, long tunnel construction, and industrial airflow management, offering optimized airflow control, superior energy efficiency, and low-noise operation.