Low speed brushless generator used for mining

The utility model discloses a low speed brushless generator used for mining, which comprises a stator, a rotor and a bearing, the stator is a center shaft connected to a coil assembly, the rotor comprises a front case, a rotor disc and a rear case fixedly connected in order, and the front case, the rotor disc and the rear case form a flame-proof chamber, a permanent magnetism sheet is fixed on the inner surface of the rotor disc, a front shaft hole and a rear shaft hole used for being passed though by the center shaft are respectively provided at the center of the front case and the rear case, a front installation seat and a rear installation seat are respectively projected on the front shaft hole and the rear shaft hole, a plane flame-proof composition surface is provided at junction of the front case, the rear case and the rotor disc, a rotating shaft flame-proof composition surface is arranged at the connection part of the front installation seat , the rear installation seat and the center shaft, and a wir