Waste heat energy-saving device of air compressor

The utility model relates to the technical field of machine manufacturing, in particular to a waste heat energy-saving device of an air compressor. The utility model provides an air compressor waste heat energy-saving device which comprises an air suction device and an air transmission device, the air suction device comprises a rotating shaft and two fans, the two fans are in interference fit with the outer wall of the rotating shaft, matching blocks are in interference fit with the two end portions of the rotating shaft, and shells are in interference fit with the outer walls of the matching blocks. Two through holes are formed in the position, between the two fans, of the shell, the through holes communicate with the air conveying device by being fixedly connected with connecting pipes, and the connecting pipes comprise the left connecting pipe and the right connecting pipe; according to the utility model, the opposite suction fans are arranged, so that air is guided into the connecting pipe, the blowing-in