Upper drainage device of mixed ion exchanger

The utility model discloses an upper drainage device of a mixed ion exchanger, which comprises a shell, a top exhaust pipe is arranged at the top of the shell, a top exhaust switch valve is arranged on the top exhaust pipe, an upper exhaust port is arranged on the side wall of the shell, the inner side of the upper exhaust port is connected with an inner wire winding pipe through an inner flange, and the outer side of the upper exhaust port is connected with an outer wire winding pipe through an outer flange. The outer side is connected with a drainage pipe through an external flange, and an external drainage switch valve is arranged on the drainage pipe. The device is simple in structure, easy to operate, capable of effectively achieving standing drainage in the regeneration process, capable of avoiding unnecessary loss of resin, capable of achieving back washing through the external air inlet pipe aiming at possible blockage of the wire winding pipe, and convenient to overhaul. 本实用新型公开了一种混合离子交换器的上部排水装置，包括壳体