Novel can extend impeller

The utility model relates to an impeller field especially relates to a novel can extend impeller. Contain the impeller, contain a plurality of blades on the impeller, contain the mounting hole on theblade, still contain the additional impeller blade of ability centre gripping on the blade, additional impeller blade contains the groove, contains additional hole on it, still contains can pass additional hole and mounting hole and will add impeller blade and fix the screw on the blade. Beneficial effect: can only change the impeller when shape of blade is the needs change that can't change amongthe prior art, this patent adopts additional impeller blade's mode, can change the current situation that the blade is too single, and the mode of change is that the screw passes additional hole andmounting hole, will add impeller blade and fix on the blade, consequently can increase big blades's size, or even change the shape of blade for but blade adjustment performance is better. 本实用新型涉及叶轮领域，尤其涉及种新型可拓展叶轮。包含叶轮，叶轮上包含多个叶片