The utility model discloses a novel explosion-proof
centrifugal fan which comprises a base, a
centrifugal fan body is fixed on the surface of the base, a driving shaft is arranged at the outer end of the
centrifugal fan body, a supporting seat is fixed on the surface of the base, the driving shaft is connected in the supporting seat through a bearing, and an inserting hole is formed in the surface of the base. A supporting table is fixed to the surface of the supporting rod, a motor is fixed to the surface of the supporting table, a spline protrusion is arranged outside a shaft rod of the motor, a spline groove is formed in the inner side of a driving shaft, a positioning shaft is arranged at the outer end of the supporting table, and a side plate is fixed to the surface of the base. The driving device is installed on the surface of the liftable supporting table, the lifting height of the driving device can be adjusted, the driving device and the driving shaft are installed in a matched mode, a spline
insertion meshing transmission structure is adopted during installation, lifting meshing installation can be adjusted, the
deformation problem cannot occur during driving, installation is adjustable, and installation is smooth.