Angle-adjustable light fan blade for fan

The utility model relates to the technical field of fan blades, and discloses an angle-adjustable light fan blade for a fan, which comprises a rotor mounting cylinder, an inner cylinder is fixedly mounted in the middle of the rotor mounting cylinder, a through hole and a positioning hole are respectively formed in the rotor mounting cylinder and the inner cylinder, and a connecting handle is movably mounted in the through hole. According to the angle-adjustable light fan blade for the draught fan, an inner barrel is arranged in a rotor mounting barrel, a positioning hole and a through hole are formed in the middle of the inner barrel and the middle of the rotor mounting barrel correspondingly, and therefore a connecting handle and the fan blade are mounted, and a first bevel gear is arranged at the bottom end of the connecting handle; the first bevel gear is meshed with a second bevel gear in the center of the rotor mounting cylinder, when a knob at the front end of the second bevel gear is rotated, the first