Hot galvanizing waste heat utilization device

The utility model provides a hot galvanizing waste heat utilization device, which relates to the technical field of hot galvanizing, and comprises a heat exchanger, a galvanizing furnace, a galvanizing assistant tank and a heat energy recovery part, a zinc pot is arranged in the galvanizing furnace, the galvanizing furnace heats the zinc pot through natural gas, one side of the galvanizing furnace is communicated with a high-temperature flue gas pipe, and the other side of the galvanizing furnace is communicated with a hot water pipe. The output end of the high-temperature flue gas pipe is communicated with the gas inlet end of the heat exchanger, and the gas outlet end of the heat exchanger is communicated with a low-temperature flue gas pipe; according to the zinc pot, natural gas is adopted for heating, discharged high-temperature and high-heat flue waste gas waste heat is introduced into the heat exchanger and the heat exchange liquid of the heat energy recovery part for heat exchange, then the heated hea