Axial flow pump with blade angle adjusting device

The invention discloses an axial flow pump with a blade angle adjusting device in the technical field of axial flow pumps. The axial flow pump comprises an axial flow pump main body, four groups of rotating discs are arranged on the outer side wall of a fixed shaft, blades are arranged on the front side walls of the four groups of rotating discs, rotating shafts are arranged on the rear side walls of the four groups of rotating discs, one end of each rotating shaft penetrates through the outer side wall of the fixing shaft and is connected with a bearing arranged on the inner side wall of the fixing shaft, a plurality of inserting holes are formed in the outer side walls of the four sets of rotating discs, four sets of cavities are formed in the fixing shaft, and buckle assemblies are arranged in the four sets of cavities. The rotating discs are arranged, the rotating discs can be rotated under cooperation of the bearing and the rotating shafts, the angle of the blade can be changed, and after the angle is ad