Continuous casting tundish quick change nozzle brick for special steel smelting

The utility model discloses a continuous casting tundish quick change nozzle brick for special steel smelting. The continuous casting tundish quick change nozzle brick for special steel smelting comprises a nozzle pickaxe core. The outer surface of the nozzle pickaxe core is sleeved with an upper nozzle and a lower nozzle in sequence from top to bottom. The upper nozzle and the lower nozzle are connected with the nozzle pickaxe core through threads. A through hole penetrating through the nozzle pickaxe core in the length direction is formed in the nozzle pickaxe core. The cross section of the upper end of the through hole is a circular conical surface. Knife edge type bosses are evenly arranged in the through hole in the circumferential direction. The continuous casting tundish quick change nozzle brick is simple in structure; the knife edge type bosses are arranged in the nozzle pickaxe core so that lumping impurities can be quickly cut, and blockage can be avoided; moreover, the continuous casting tundish quick change nozzle brick for special steel smelting is small in stressed area and impact, long in service life, easy to dismantle and capable of improving the working efficiency.