Splicing type smelting furnace exhaust funnel

The utility model relates to the technical field of smelting furnace exhaust cylinders, and discloses a spliced smelting furnace exhaust cylinder which comprises a first connecting pipe and a clamping block, one end of the first connecting pipe communicates with a second connecting pipe, a connecting groove block is slidably mounted on the surface of the clamping block, and a limiting block is clamped to one end of the connecting groove block; and a connecting ring is fixedly connected to one end of the limiting block, a fixing block is fixedly installed at the end, away from the limiting block, of the connecting ring, a fixing bolt is in threaded connection with the interior of the fixing block, a connecting frame is clamped to the inner wall of the second connecting pipe, and a rotating blade is rotationally installed at one end of the connecting frame. According to the scheme, the connecting groove block and the clamping block are mounted at one end of the first connecting pipe and one end of the second co