Runner blade for mixed-flow water turbine

The utility model discloses a runner blade for a mixed-flow water turbine, which relates to the technical field of runner blades and comprises an upper support, a lower support is arranged at the lower end of the upper support, a blade body is arranged between the lower support and the upper support, and a hollow column is arranged on the outer surface of the upper support. An inner rotating structure is arranged in the hollow column, an outer rotating structure is arranged on the outer surface of the lower support, the inner rotating structure comprises a supporting plate arranged on the outer surface of the inner wall of the hollow column, an outer limiting strip is arranged at the position, close to the upper end of the supporting plate, of the outer surface of the inner wall of the hollow column, and a bearing is arranged at the upper end of the supporting plate. The utility model solves the problems that the inner part of the rotating shaft center of the rotating blade of the existing mixed-flow water tu