Pipeline mixing and heating device for waste water recovery

The utility model discloses a pipeline mixing heating device for waste water recovery, which belongs to the technical field of waste water recovery equipment and comprises a waste water pool and a pipeline mixer, the pipeline mixer comprises a core pipe, an outer pipe and an annular pore plate, and the annular pore plate is sleeved in an annular cavity between the core pipe and the outer pipe. The annular hole plate divides an annular cavity between the core pipe and the outer pipe into a first heat exchange area and a second heat exchange area. The pipeline mixed heating device for waste water recovery is small in occupied space, steam entering the first heat exchange area through the first steam inlet exchanges heat with water flow in the core pipe in a dividing wall mode, the water flow is heated in a small range, meanwhile, the steam is cooled in a small range, the steam enters the second heat exchange area after being evenly distributed through the annular pore plate, and the heat exchange efficiency is