| 摘要 |
PURPOSE:To uniformly polish the inner face of the flow passage of any of impellers having various shapes of vanes respectively with high accuracy by providing an installing angle adjustable guide vane. CONSTITUTION:An impeller 8 is rotated in a tank 6 containing an abrasive 9 and an auxiliary abrasive 7 such as water, etc., via a shaft coupling 2 and a shaft 5. Accompanying this rotation, the abrasive 9 and auxiliary abrasive 7 are sucked in from the suction port of the impeller 8 and, in the process of their getting out while scrubbing the flow passage wall of the impeller 8, the flow passage wall is polished by the abrasive 9 removing ruggedness to obtain a smooth finished surface. In this case, the flow of the abrasive 9 and auxiliary abrasive 7 are streamlined by means of guide vanes 10 the set angle of which is freely adjustable, controlling an incident angle at the time of suction to optimize the angle for the abrasive 9 to hit against the faces of vanes at all times, thereby, making the polishing degree of the suction port of an impeller 8 having any inclination angle the same. |
