Sand filling device for tapping hole of electric arc furnace

The invention relates to the technical field of electric arc furnace steelmaking. The electric arc furnace tapping hole sand filling device comprises a base, a rotating rod is rotationally connected to the upper end of the base, a plurality of temporary storage bins are arranged on the periphery of the rotating rod and fixedly connected with the rotating rod through fixing columns, a first discharging opening is formed in the lower end of each temporary storage bin, and a first valve is arranged at the lower end of each first discharging opening. The first valve comprises a first rectangular frame fixedly connected with the lower end of the first discharging port, a first rectangular block is slidably connected to the middle of the first rectangular frame, the output end of a first hydraulic rod is fixedly connected to one end of the first rectangular block, and the first hydraulic rod is fixedly connected with one side of the first rectangular frame; the multiple temporary storage bins are driven by driving