Combustion furnace with conveniently cooled smoke exhaust tube

The invention discloses a combustion furnace with a conveniently cooled smoke exhaust tube. The combustion furnace comprises a bottom plate. A boiler body is fixed to the outer wall of the top of thebottom plate through bolts, a smoke exhaust barrel is fixed to the outer wall of the top of the bottom plate through bolts, a heat conducting plate is fixed to the outer wall of one side of the smokeexhaust barrel through bolts, a stable rib plate is fixed to the outer wall of one side of the smoke exhaust barrel through bolts, the outer wall of one side of the stable rib plate is welded to the outer wall of the top of the bottom plate, a horizontally placed transverse plate is welded to the outer wall of one side of the smoke exhaust barrel, and a water tank is fixed to the outer wall of thetop of the transverse plate through bolts. The combustion furnace disclosed by the invention can cool the smoke exhaust barrel simply and effectively. The heat conducting plate exchanges heat with the outer side, and a water f