
High-Efficiency 37kw Underground Axial Flow Ventilator for Optimal Airflow. Counter-Rotating Double-Motor Structure: Adopts two-stage counter-rotating impellers for airflow rectification and energy superposition without guide vanes. High Efficiency Aerodynamic Design: Ternary flow impeller design with CFD optimization ensures high efficiency zone covers 70%-130% of rated flow rate. Low Noise Operation: Modular muffler system reduces noise to below 85dB(A) with specific A sound level controlled below 35dB. Explosion-Proof Certification: FBD series fans are certified as explosion-proof press-in ventilators suitable for underground spaces. Flexible Customization Options: Offers flexible customization services including OEM and ODM capabilities for specific model requirements. Carbon Steel Construction: Built with durable carbon steel for both the main body and blade materials to ensure longevity. Comprehensive Quality Inspection: Undergoes 100% finished product inspection including functional and visual checks by trained QA/QC inspectors.