Combustion furnace with exhaust cylinder having airflow intensity balance function

The invention discloses a combustion furnace with an exhaust cylinder having an airflow intensity balance function. The combustion furnace comprises a bottom plate, wherein the outer wall of the top of the bottom plate is fixed with a boiler body through bolts, the outer wall of the top of the boiler body is fixed with an auxiliary air inlet pipe through bolts, a valve is arranged on the outer wall of one side of the auxiliary air inlet pipe, a frequency conversion draught fan mounting base is fixed on the outer wall of the top of the bottom plate through bolts, and a frequency conversion draught fan is fixed on the outer wall of the top of the frequency conversion draught fan mounting base through bolts; a blower nozzle of the frequency conversion draught fan is in inserted connection with an air blowing pipe; and the exhaust cylinder is fixed on the outer wall of the top of the bottom plate through bolts. The frequency conversion draught fan works and generates wind to blow exhaust gas into the exhaust cyli