Quick change mouth of a river device for continuous casting of metal

The utility model discloses a quick change mouth of a river device for continuous casting of metal, the inside surface of through -hole is provided with the zirconium core, and the lower part outer wall of through -hole is provided with the bell mouth, the one end outer wall of bell mouth is provided with the sphere body, the through -hole is kept away from the bell mouth and is kept away from theone end below outer wall of zirconium core and be provided with and hold in the palm rank, ask the lower part outer wall on rank to be provided with the truncated cone body, and the upper portion outer wall that holds in the palm rank is provided with the boss, the party that the sphere body was kept away from to the bell mouth is provided with the support frame. The utility model discloses a continuous casting of metal mouth of a river casing is overall structure, installs the zirconium core in the through -hole, and part one shot forming such as casing, zirconium core need not be equipped with the binder between ea