External steel ladle filler sand device and drainage method

The external steel ladle stuffing sand device and the drainage method are reasonable in design, the external steel ladle stuffing sand device comprises a breakthrough area and a collecting area which are sequentially connected, stuffing sand enters the collecting area after passing through the breakthrough area, and molten steel breaks the breakthrough area when flowing to the breakthrough area along with the stuffing sand and then falls into a tundish impact area. By means of the melting point of the breakthrough area, only the sand receiving device needs to be placed in place before casting, the ladle filler sand does not need to be manually received, and the ladle filler sand and the molten steel are separated by means of the principle that the ladle filler sand cannot break through the breakthrough area but the molten steel instantly breaks through the breakthrough area, the ladle filler sand is ingeniously received completely, and meanwhile the ladle filler sand can be completely received. Splashing cann