Multistage pump impeller axial positioning mechanism

The utility model relates to a zero technical field, especially a multistage pump impeller axial positioning mechanism of pumps. Including drive shaft, connection key and impeller, the axle is throughconnecting key and impeller connection, its characterized in that the impeller both ends are equipped with axle sleeve and snap ring, are equipped with on the axle sleeve to clamp the opening, clampopening laminating snap ring lateral part and constitute positioning unit, connect multi -stage impeller in the drive shaft, are equipped with positioning unit between the impeller. Whole positioningmechanism reduces epaxial interference fit requirement by a wide margin, changes traditional locate mode, promotes positioning accuracy and reduces the loading and unloading degree of difficulty simultaneously, and the maintenance is dismantled to the equipment of being convenient for. Seting up the card in the drive shaft and keeping off the recess, the recess width is the same with card ring width. Promote axial positioni