Anti-explosion centrifugal fan

The utility model discloses an explosion-proof centrifugal fan, which belongs to the field of fans, is used for explosion prevention, and comprises a bracket, an explosion-proof motor is fixed on the bracket, the explosion-proof motor drives a main shaft to rotate through an output shaft and a transmission group, the main shaft is connected with an impeller through an explosion-proof shaft seal on a shell, and the impeller is positioned in the shell and is driven by the main shaft; an air inlet is formed in the machine shell, an anti-explosion opening ring is arranged at the outlet end of the air inlet, and the anti-explosion opening ring is located at a meshing opening of the impeller and the air inlet. According to the technical scheme, the friction points of the anti-explosion fan can be improved, the anti-explosion performance of the fan is improved, the anti-explosion fan is suitable for places with low anti-explosion performance requirements, and the application range of the anti-explosion fan can be wi