Self-circulation waste heat recovery device without power consumption

The utility model provides a power-consumption-free self-circulation waste heat recovery device which comprises a flow inlet pipe, a coiled pipe, a sealing ring, a heat conduction silica gel sleeve, asupport, a flow outlet pipe, a cover plate and a recovery box body, the coiled pipe is installed inside the recovery box body, the flow inlet pipe is installed on the left side of the annular side face of the coiled pipe, and the flow outlet pipe is installed on the right side of the annular side face of the coiled pipe. The sealing ring is installed at the joint of the coiled pipe and the recycling box body, the support is fixed to the bottom of the recycling box body, the cover plate is installed on the recycling box body, the annular side face of the coiled pipe is sleeved with the heat conduction silica gel sleeve, and the problem that an original electricity-consumption-free self-circulation waste heat recycling device is poor in waste heat recycling effect is solved through the design. Combined installation