The invention discloses a
waste heat recovery device for
coating environment-friendly
mechanical equipment. The device structurally comprises a body, a box door, a control button and a fan, wherein the front end of the body is provided with the box door, the control button is located at the upper end of the box door, the fan is arranged at the side end of the body, the body comprises a
drying box,a carrier plate, an air inlet, a circulation tube and a
scavenging air valve, the circulation tube comprises a vent groove, a heat conduction head, a heat conduction device and a heat absorbing block, the heat conduction device comprises an
airflow groove, a heat conduction groove, a rotation shaft and a blade, and the blade comprises a blade body, a through hole and a
rubber sheet. According tothe device, the blade with an arch-shaped
tail end in the heat conduction device is used for centrally guiding
airflow, so that the blade drives the rotation shaft to rotate rapidly, the flowing
airflow is guided into the heat conduction groove, a contact area between air and the heat conduction head can be increased by the heat conduction groove which is extended from the middle to the outer end,absorption of heat in the air is accelerated, and the situation that a large amount of heat-carrying air is directly discharged during
air exchange, and resource
wasting is caused is avoided.