Slag blocking device and system suitable for metallurgical lead smelting bottom blowing furnace

The utility model belongs to the technical field of non-ferrous metal metallurgy. The slag blocking device comprises a fixed base, a truss, a hanging frame and a charging barrel, and the first end of the truss is rotationally supported on the fixed base; the hanging frame is rotationally arranged at the second end of the truss, and the axis of the first rotating shaft and the axis of the second rotating shaft are both in a vertical state; the charging barrel is rotationally supported on the hanging frame; a feeding driving part is arranged in the charging barrel, a plug corresponding to a slag hole of the kiln is arranged at the front end of the charging barrel, a charging hole is formed in the side wall of the charging barrel, and the feeding driving part pushes a plugging material in the charging barrel to flow out from the end part of the plug. The utility model further discloses a slag blocking system suitable for the metallurgical lead smelting bottom blowing furnace. The device is of an independent stru