Copper alloy vacuum water-cooling continuous casting crystallizer connecting sealing flange

The utility model discloses a copper alloy vacuum water-cooling continuous casting crystallizer connecting sealing flange. A crystallizer connecting flange and a crystallizer supporting plate are of aseparated structure. The connecting flange is provided with an annular cooling cavity and a conical ring; the crystallizer supporting plate is provided with a conical sealing surface, a conical surface sealing groove is formed in the conical sealing surface, and a metal O-shaped sealing ring is arranged in the conical surface sealing groove; the crystallizer supporting plate is arranged in the conical ring of the crystallizer connecting flange, the metal O-shaped sealing ring is in contact with the conical surface of the conical ring, and a gap is formed between the conical sealing surface ofthe crystallizer supporting plate and the conical surface of the conical ring; when the crystallizer connecting sealing flange works, the annular cooling cavity formed in the connecting flange enables the size of the conical