Device, method, and system for removing a pump impellor from a pump shaft
View Patent ↗A method for removing a pump impellor from an operatively associated pump shaft is provided. The method includes preventing rotation of the pump impellor in a first direction and simultaneously applying a torque to the pump shaft in the first direction, whereby the torque comprises continuous hammer impacts. A brace is used to prevent the rotation of the pump impellor, wherein the brace is fixed on a second end opposite the first end preventing rotation. A bolt connected to pump may fix the second end. An impact wrench with a socket having a shaft key operatively associated with the pump shaft notch may provide the simultaneous application of the torque.
1 . A method for removing an impellor from an operatively associated drive shaft, the method comprising:
connecting an elongated member to a non-rotating structural element associated with the impellor;
interconnecting a slidable brace between the elongated member and one or more blades of the impellor so as to prevent rotation of the impellor in a first direction; and
applying a torque to the drive shaft in the first direction by way of continuous hammer impacts, wherein when said one or more blades move axially during the continuous hammer impacts the slidable brace rides along the elongated member so as to move in concert axially with said one or more blades.
2 . The method of claim 1 , wherein the first direction is counterclockwise rotation.
3 . The method of claim 1 , wherein the slidable brace is an elongated object extending between a first end and a second end, wherein the slidable brace has a notch adjacent the first end, and wherein the slidable brace has a hole adjacent the second end for receiving the elongated member.
4 . The method of claim 1 , wherein application of the torque to the drive shaft is by way of an impact wrench.
5 . The method of claim 4 , wherein a socket is coupled to the impact wrench, and wherein the socket provides a shaft key to operatively associate with a shaft notch of the drive shaft.