Environment-friendly dust falling and collecting device for tap hole of metallurgical furnace

The utility model discloses an environment-friendly metallurgical furnace tap hole dust falling and collecting device, which belongs to the field of metallurgical furnace ironmaking environmental protection, and comprises a base, a rotating body is arranged at the top end of the base, a limiting groove is formed in the top end of the base, and a top bead and a spring are arranged in the limiting groove. A case is arranged at the top end of the rotating body, a water tank, a water pump and an air compressor are arranged at the top end of the case, a mechanical arm, a feeding rail, a feeding mechanism, a rotating motor and a speed reducing mechanism are arranged on one side of the case, a dust suction device and a dust collection box are arranged at the other end of the mechanical arm, and a high-pressure water pipe is arranged at the bottom end of the mechanical arm. The other end of the high-pressure water pipe is fixedly connected with a limiting top core and an inductor, the output end of the inductor is co