Cleaning system, cleaning method and cleaning device for heat exchanger and setting machine

The invention relates to the technical field of textile equipment, and discloses a cleaning system for a heat exchanger, comprising: a wastewater treatment assembly for treating wastewater generated by target equipment to obtain heat recovery water meeting set parameters; and the cleaning flow path communicates with the water outlet end of the wastewater treatment assembly, and a water outlet part of the cleaning flow path is used for guiding the heat recovery water into the heat exchanger so as to clean the interior of the heat exchanger. According to the wastewater treatment assembly, the hot concentrated alkali wastewater generated by the target equipment can be recycled, and the heat recycled water meeting the set parameters is obtained. The heat recovery water meeting the set parameters is alkaline, and the temperature is high. Therefore, the heat recovery water is introduced into the heat exchanger, and the cleaning effect on the interior of the heat exchanger can be improved. In addition, waste water g