| 摘要 |
PROBLEM TO BE SOLVED: To provide a pump device having a salient arranged between the first discharging pipe and the second discharging pipe installed at a pump case capable of restricting accumulation of fluid at a step part caused by the salient even if fluid flowed from one side is leaked when fluid is discharged out of the other side.SOLUTION: This invention relates to a pump device in which a peripheral wall 44 of the second case 4 of a pump case is provided with a salient 45 (the first salient 46 and the second salient 47) between the first opening part 48 communicated with the first discharging pipe 8 and the second opening part 49 communicated with the second discharging pipe 9. As seen from a direction of an axial line L1 of the first discharging pipe 8, at least a portion of an end part 461 of the first salient 46 in the second rotating direction [ccw] is positioned in the second rotating direction [ccw] rather than a portion positioned at the nearest first rotating direction [cw] in the peripheral surface 80 of the first discharging pipe 8, so that the peripheral wall 44 has a narrow region held by a step part caused by the first salient 46 and the first opening 48, or has no such a region as above.SELECTED DRAWING: Figure 5 |
