FBCDZ Explosion-Proof Counter-Rotating Mine Main Ventilation Fan

FBCDZ Series Explosion-Proof Counter-Rotating Mine Main Ventilation Fan is designed for main ventilation systems in large and medium-sized coal mines. It adopts a two-stage counter-rotating axial flow structure, direct motor-impeller connection, enclosed motor protection and adjustable blade angle for stable mine ventilation under different network resistance conditions.

FBCDZ series is developed for coal mine ventilation networks where main fans must handle larger airflow, higher resistance adaptability and long-term continuous operation. Compared with ordinary single-stage axial mine fans, the counter-rotating structure uses two impellers rotating in opposite directions to improve pressure adaptability and reduce intermediate guide vane losses.

This series is suitable for surface extractive ventilation in large and medium-sized coal mines. It can also be considered for mine ventilation projects where explosion-proof protection, high efficiency, reverse airflow capability and stable performance under changing resistance conditions are required.

The motor is installed inside a sealed cover in the main air duct. The sealed cover has pressure resistance and helps isolate the motor from gas-containing airflow in the fan passage.

Streamlined air ducts connect the sealed cover with outside fresh air, allowing fresh air to enter the cover and helping maintain positive pressure during operation. This structure supports explosion-proof operation and motor cooling in mine ventilation applications.