Extrusion-formed water seal structure

The utility model relates to a water seal structure after extrusion forming, which sequentially comprises a spraying unit and a connecting box which are arranged on a front beam along the discharging direction of a copper rod after extrusion forming, a first gate mechanism is arranged between the spraying unit and the connecting box, and a second gate mechanism is further arranged between the connecting box and a water tank; the spraying unit comprises a mounting base, a cavity communicating with the front beam is formed in the center, facing the discharging direction, of the mounting base, and spraying pieces which are equally arrayed and penetrate into the cavity are further arranged on the outer circumference of the mounting base; in the direction of the connecting box, a sealed sealing cover is installed on one side of the installation base, a backflow pipe capable of pumping out cooling water accumulated in the cavity is further arranged below the installation base, and a nitrogen inlet is further formed