surface explosion-proof fan

Surface explosion-proof fans are mounted at the entrances of mines, tunnels, and industrial buildings where flammable gases or dust risk ignition. Their Ex d flameproof enclosures contain any internal arcs or sparks.

Axial or centrifugal designs handle airflow rates from 50,000 to 300,000 CFM and static pressures up to 6 kPa. Housings and impellers use anti-spark alloys and corrosion-resistant coatings to withstand environmental exposure.

Variable frequency drives (VFDs) in explosion-proof housings enable controlled intake/exhaust, adjusting fan speed based on gas, temperature, and airflow sensors. Soft-start functionality reduces mechanical stress and inrush currents.

Maintenance features include split-casing for impeller access, external lubrication ports, and remote condition monitoring of vibration and temperature. These fans ensure compliant and reliable ventilation in hazardous surface environments.