coal mine surface explosion-proof main fan

The coal mine surface explosion-proof main fan is the primary blower installed at the mine’s entrance shaft, engineered to force fresh intake air into underground workings while preventing ignition of methane or coal dust. Its Ex d motor enclosure contains any internal sparks, meeting ATEX, IECEx, and MSHA safety standards.

Constructed with heavy-gauge steel housing and abrasion-resistant impellers, the fan delivers 100,000–500,000 CFM at static pressures up to 6 kPa. The robust design resists harsh weather and corrosive tunnel atmospheres.

Equipped with premium IE4 motors and optional variable frequency drives (VFDs), it provides constant-pressure control, automatically adjusting speed based on real-time sensor data for gas concentration, barometric pressure, and airflow demand. Soft-start functionality reduces mechanical stress and extends component life.

Maintenance is simplified through split-casing for impeller access, external lubrication points, and integrated condition monitoring of vibration and temperature. This fan ensures reliable, compliant ventilation for safe coal mining operations.