Fully-sealed die casting pouring protection device

The invention relates to a fully-sealed die casting pouring protection device. The device comprises an argon protection ring (1), a pressing plate assembly and a visual protection cover assembly. Theargon protection ring (1) is connected with a steel ladle molten-steel outlet through a screwing block (11), and the lower end of the argon protection ring (1) extends into a through hole of a top endpressing plate (2) of the pressing plate assembly; the argon protection ring (1) or the top end pressing plate (2) is rotated to be screwed into a connecting bracket (21) through the connecting block(12) to implement sealed connection; and the upper end of a main body support (3) of the visual protective cover assembly is in sealed connection with the lower end of a top end pressing plate (2), an exhaust hole is formed in the lower side wall of the main body support (3), and a visual window (7) is arranged on the side wall. The fully-sealed die casting pouring protection device is simple instructure and easy to instal