The utility model discloses a
combustion furnace with an automatic feeding function, which comprises a furnace body, and a feeding port is arranged on one side of the furnace body. Through the cooperation of the quantitative frame, the material collecting box, the feeding hopper and the double-roller type pulverizator,
renewable biomass fuel can be pulverized in advance, so that the contact area of the
renewable biomass fuel and
oxygen during
combustion can be increased, the
renewable biomass fuel can be fully combusted, and then through the cooperation of the
servo motor, the quantitative rollers and the quantitative groove, the
biomass fuel can be fully combusted. According to the feeding device for the renewable
biomass fuel, the crushed renewable
biomass fuel can be quantitatively discharged, a certain gap is formed in each time of discharging, and therefore the safety of discharging can be further improved, and finally through cooperation of a feeding port, a transition channel, a
transmission channel, a transmission motor and a
spiral blade, the discharging efficiency is improved. And renewable biomass fuel can be stably conveyed into the furnace body to be combusted, so that the effects of automatic feeding of the furnace body and high feeding safety can be achieved.