Drying room waste heat recovery device for paper tube processing

The utility model relates to the technical field of drying room waste heat recovery devices, in particular to a drying room waste heat recovery device for paper tube processing, which comprises a heating furnace, a recovery furnace is mounted on the left side of the heating furnace, water tanks are mounted in the heating furnace and the recovery furnace, and a connecting hose is mounted between the heating furnace and the recovery furnace. A rectangular box is installed outside the recovery furnace, a connecting device is installed inside the rectangular box, the connecting device comprises a base, a sliding strip, a movable sleeve, a first clamping plate, a second clamping plate, a telescopic rod and a round frame, the base is installed on the inner side wall of the rectangular box, the sliding strip is installed on the right side of the base, the movable sleeve is installed outside the sliding strip, and the first clamping plate is installed on the right side of the sliding strip. The first clamping plate a