Hydraulic cutting land infiltration infusion oxygen mixer

The utility model provides a hydraulic cutting land infiltration infusion oxygen mixer, comprising a flange I, a connecting pipe I, a connecting pipe II, a jet pipe I, a jet pipe II and a flange II orderly connected. The connecting pipe I, the connecting pipe II, the jet pipe I and the jet pipe II are tubular. The inner inlet end of the jet pipe I is trumpet-shaped and contracts gradually from big to small. The inner side of the jet pipe II is trumpet-shaped and expands gradually from small to big till an outlet end; the inner surface of the flange I is connected with an inlet end of a nozzle while an outlet end of the nozzle is extended to the inner side of the connecting pipe II. The nozzle and the connecting pipe II encircle an oxygen mixing chamber. A gas connecting pipe is located above the connecting pipe II and communicated with the connecting pipe II. The hydraulic cutting land infiltration infusion oxygen mixer provided by the utility model not only has a simple structure and strong loading capacity, but also has double function of supply gas and agitating and improves the mixing efficiency of oxygen.