Sealed double - circuit of curved surface blows long mouth of a river of argon structure

The utility model relates to a sealed double - circuit of curved surface blows long mouth of a river of argon structure belongs to metallurgical industry casting machine technical field. Technical scheme is: the curved surface is described for the horn mouth to the contact surface of the mouth of a river (1) under long the mouth of a river (8) and the ladle, be equipped with between the mouth of ariver (1) under the long mouth of a river (8) and the ladle flexible refractory fiber packing ring (3), the upper portion of long mouth of a river (8) be equipped with with the long mouth of a river(8) and ladle under the upper portion argon gas air feed of contact surface intercommunication of the mouth of a river (1) enter the mouth (4), the below of the mouth of a river (1) contact surface isequipped with the lower part argon gas air feed entry (6) that feeds through with long the mouth of a river steel inflow entrance (11) under long the mouth of a river (8) and ladle. The beneficial effects of the utility model