Waterproof layer coating device for building engineering construction

The utility model provides a waterproof layer coating device for building engineering construction. The waterproof layer coating device for building engineering construction comprises a fixed box; a driving mechanism; a connection mechanism; a support mechanism; a blocking mechanism; the coating mechanism comprises a roller, a baffle, a blocking rod, a fixing shell, a spray head, a connecting pipe and a fixing net, the top end of the supporting mechanism is fixedly connected with the fixing shell, the connecting pipe is fixedly connected to the interior of the fixing shell, and the connecting pipe communicates with the interior of the supporting mechanism; the blocking rod with the arc-shaped side wall is slidably connected into the connecting pipe, and the fixing net is installed in the connecting pipe. The sprayers are mounted on the side wall of the connecting pipe at equal intervals, the sprayers are slidably connected with the side wall of the roller, and the roller is rotatably connected with the interi