• 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:

DECENT MACHINERY Welcomes East African Mining Partners for In-depth Mine Fan Cooperation



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 Series High-Pressure Tunnel Fan is an advanced ventilation system engineered for underground excavation, mining ventilation, and large-scale infrastructure projects. With a counter-rotating axial flow system, it enhances airflow stability, reduces noise, and maximizes energy efficiency in mining tunnels, ventilation shafts, and underground sites.
 

How the SDF Series Tunnel Fan Works

• 1. The dual-stage impellers rotate in opposite directions, generating efficient counter-rotating airflow.
• 2. The first-stage impeller increases air velocity, while the second-stage impeller optimizes pressure and airflow direction.
• 3. The result is a high-efficiency ventilation system that minimizes turbulence and enhances airflow stability.
• 4. This design improves overall aerodynamic performance, leading to better airflow efficiency and lower noise levels.

Key Features of SDF Series Tunnel Ventilation Fan

• Counter-rotating axial flow technology for stable and long-distance airflow in underground tunnels.

• Adjustable blade angles, allowing precise airflow control to match specific ventilation needs.

• Robust steel construction with arc flame spraying treatment, ensuring corrosion resistance and long-term durability.

• Integrated noise reduction technology, with silencers at both air inlet and outlet, keeping noise levels within JB/T8690 industrial ventilation standards.

• Dynamic balancing technology guarantees low vibration and stable operation for continuous industrial use.

• Double-layer housing with ultra-fine glass wool lining enhances soundproofing and extends fan lifespan.

• Compact and space-efficient design, delivering high-performance ventilation with minimal maintenance requirements.

• Stringent factory testing and quality certification, ensuring compliance with industry safety and performance regulations.