Vane type bidirectional vortex flow cavity static mixer

The utility model discloses a static mixer of a blade-type bidirectional vortex chamber, which is applied to the technical field of oil production in an oil field. The static mixer mainly comprises a lower swirl nozzle, a middle chamber and an upper swirl nozzle , and is characterized in that the upper swirl nozzle and the lower swirl nozzle respectively comprise a central shaft, a helical vane and an outer shell. The central shaft is welded with a continuous helical vane, the dip angle of which is 15-25 DEG, the two ends of the central shaft are welded with a lower bracket and an upper bracket, both of which fix the central shaft and the helical vane in the shell, the helical vanes of the upper swirl nozzle and the lower swirl nozzle are helical and opposite, a short pipe is arranged between the lower swirl nozzle and the upper swirl nozzle, and the two ends of the short pipe are respectively connected with the lower swirl nozzle and the upper swirl nozzle by adopting couplings. The utility model has the adv