Cooling duct structure of cyclone export

The utility model discloses a cooling duct structure of cyclone export, the cooling duct structure is including a center section of thick bamboo, first expansion joint, cooling duct, second expansion joint and afterbody flue, cooling duct's import and export are provided with cooling duct import collection case and cooling duct export collection case respectively, cooling duct's import is connected through a first expansion joint and a center section of thick bamboo, the access connection of second expansion joint and afterbody flue is passed through in cooling duct's export, a center section of thick bamboo and cyclone's exit linkage to be provided with separator first part case on the section of thick bamboo of center, separator first part case is through first connecting pipe and cooling duct import collection case intercommunication, be provided with afterbody flue first part case on the afterbody flue, cooling duct export collection case passes through second connecting pipe and afterbody flue first part