Sealed steel fireproof window

The utility model relates to the technical field of fireproof windows, in particular to a sealed steel fireproof window. The window comprises a window frame, the window frame is installed inside a wall, glass is fixedly connected to the inner wall of the window frame, fixing structures are arranged at the two ends of the window frame, each fixing structure comprises two square grooves, the two square grooves are formed in the window frame, and two connecting blocks are fixedly connected to the sides, away from the glass, of the square grooves. The inner walls of the two connecting blocks are rotationally connected with threaded pipes, the inner walls of the threaded pipes are provided with reverse threads, the inner walls of the threaded pipes are in threaded connection with two threaded rods, the ends, away from the threaded pipes, of the threaded rods are fixedly connected with rubber blocks, and the inner wall of the window frame is fixedly connected with a shaft rod. The arc surface of the shaft rod is ro