Detecting device for outer diameter of ceramic fuse tube

The utility model discloses a detecting device for the outer diameter of a ceramic fuse tube. The detecting device comprises a detecting device body, wherein a vibrating motor is arranged in the body; a material screening disk is connected to the motor; a spiral track which is formed by spirally extending along the inner surface of the material screening disk upwards is arranged on the material screening disk; the detecting device is provided with two feed tracks; the feed tracks are arranged at the tail end of the spiral track and engaged with the spiral track; the engaged position between the spiral track and the feed tracks is provided with a separating track; the separating track is provided with a first material passage and a second material passage; the second material passage is arranged at the outer side of the first material passage; the first end of the first material passage of the separating track is connected with the spiral track; the second end of the first material passage is connected with on