Paddle-adjusting impeller of axial-flow fan

The utility model relates to a paddle-adjusting impeller of an axial-flow fan, relating to the axial-flow fan. The paddle-adjusting impeller comprises a shaft sleeve body and three blades and is characterized in that the shaft sleeve body comprises a shaft sleeve seat and a shaft sleeve cover, the shaft sleeve seat is formed by respective connection of the inner circle and the outer circle of a ring plate with an inner shaft sleeve and an outer ring column arranged in an extending way, the end face of the outer ring column is uniformly provided with three similar round holes with the arc smaller than a semicircle, the shaft sleeve cover is formed by connection of the outer circle of a ring plate with a butting ring column arranged in an extending way, the end face of the butting ring column is uniformly provided with three similar round holes with the arc smaller than a semicircle, three blade root connecting seats are formed by respective connection of two end faces of a cylinder with a round plate arranged