Waste heat recovery and regeneration fresh air system for high-temperature waste gas of sintering furnace

The waste heat recovery and regeneration fresh air system comprises a bottom plate, one side of the top end of the bottom plate is fixedly connected with a pretreatment box, the other side of the top end of the bottom plate is fixedly provided with a heat exchanger, and the side, close to the heat exchanger, of the pretreatment box is fixedly provided with a fresh air fan. The input end of the fresh air fan communicates with the interior of the pretreatment box, a filter screen is clamped to the input end of the fresh air fan, a gear motor is fixedly installed in the middle of the side, away from the heat exchanger, of the pretreatment box, the output end of the gear motor penetrates through the inner wall of the pretreatment box to be fixedly connected with a rotating shaft, and one end of the rotating shaft is fixedly connected with a dredging brush. According to the waste heat recovery and regeneration fresh air system for the high-temperature waste gas of the sintering furnace, the fresh air system has a