The gas medium conveyed by the explosion-proof axial flow fan is carbon monoxide, petroleum gas, chemical gas, or explosive and flammable gas containing explosive dangerous powder in the gas. If the rotor part of this type of fan is made of general carbon steel, because the parts collide with each other, or the rotor sucks in impurities such as sand or iron filings, sparks are likely to cause gas combustion and explosion, leading to serious accidents. In order to avoid such accidents, when the fan conveys explosive and low-flammable gas medium, the volute of the fan is made of steel plate, and the impeller can be made of aluminum. However, the explosion-proof axial flow fans used when the fans convey explosive and flammable gases are made of aluminum.

When the fan is directly installed in a fire or explosion-dangerous gas plant, the explosion-proof axial fan cannot be driven by belts to avoid electrostatic sparks and explosions. If it is necessary to use belt drive, the explosion-proof axial flow fan should take effective measures to eliminate static electricity on the belt to ensure safe operation.