Impeller hub dismounting device

The invention discloses an impeller hub dismounting device. The impeller hub dismounting device comprises a dismounting device composed of a double head bolt, a lead screw and a flange plate, and further comprises a clamping fixture connected with the dismounting device. The clamping fixture comprises a hollow shaft. The lead screw penetrates through the hallow shaft. A fourth circular truncated cone of the hallow shaft is arranged on the hallow shaft. Symmetrical radial through holes are formed in an extending end on one side of the hallow shaft. A handle is fixedly connected with the hallow shaft through the radial through holes. Lock nuts, nuts and gaskets, thrust ball bearings, check rings and deep groove ball bearings are respectively arranged on a first circular truncated cone and a second circular truncated cone of the hallow shaft on an external screw thread step end of the other side of the hallow shaft. A central through hole inside a jacket is matched with the hallow shaft. Jacket second circular t