Observation window sealing mechanism

The utility model relates to an observation window sealing mechanism which comprises a smelting furnace, a plurality of window frames are fixed to the front face of the smelting furnace, observation windows are hinged to the front ends of the window frames through hinges, two door locks are arranged at the front ends of the window frames and the front ends of the observation windows, connecting plates are fixed to the inner sides of the window frames, and first sealing blocks are clamped in the connecting plates. A second sealing block is fixed to the rear side of the observation window, two limiting blocks are fixed to each of the upper end and the lower end of the front end of the second sealing block, clamping blocks are clamped to the opposite sides of the left limiting block and the right limiting block, and supporting blocks are fixed to the upper ends and the lower ends of the clamping blocks. According to the observation window sealing mechanism, the sealing performance can be effectively improved, a