| 摘要 |
PROBLEM TO BE SOLVED: To provide an impeller capable of preventing deterioration in pump efficiency.SOLUTION: An impeller 1 includes: an impeller body 3 including a disk-like back shroud 11 and a plurality of blades 12 integrally formed on one main surface of the back shroud 11; an impeller cover 4 having an opening for sucking liquid at its center and covering the impeller body 3; an engaging part 13 provided in an end surface 12a facing the impeller cover 4 of the blades 12; and an engaged part 33 provided in the impeller cover 4 facing the engaging part 13, formed so that it can insert the blades 12 and can engage with the engaging part 13 and welded with the engaging part 13 after the engagement. |
