Air compressor screw waste heat recovery system

The invention provides an air compressor screw waste heat recovery system. The system is connected to an air compressor and comprises a heat energy exchanger, a cyclic heating water tower and a heat preservation water tank, wherein when the air compressor screw waste heat recovery system operates, heat generated by operation of a screw is fed to the cyclic heating water tower via the heat energy exchanger and is used for heating water in the heating water tower; when the water is heated to preset temperature, the water in the cyclic heating water tower is fed to the heat preservation water tank via a water pump. According to description and practice, the heat energy exchanger is arranged, so that a large quantity of heat generated by rotation of the screw is discharged via lubrication oil and a pipeline and is intensively collected; the collected heat is fed to the cyclic heating water tower or an indoor floor heating device; the technical problem that most of the heat taken out by the lubrication oil is lost