| 摘要 |
ertical multi-stage submerged deep-well pump which, for reducing the pump shaft oscillations and covering the extra manometric head requirements, is composed of subsidiary in-series-connected stages (the lower group 5,6,7 & the upper group 9) having between them the depression conduit 4. The additional groups of stages 9 are connected, in the drilling area, to the vertical depression conduit 4, by means of an arrangement of adjustable connections 8 comprising the connecting pipe retaining the shaft 81 and having on the other end the screwed safety nut 83 and the first flange 84 wherein there is screwed the adjusting tool 87 having inside a ball bearing 86 and handles 85 on its upper surface. At the connecting pipe, 81 there are screws retaining the pump shaft 11. The suction chamber of the added stages 91 is externally threaded to receive the safety nut 89 and the second flange 88, which is connected to the end portion of the first flange 84, by means of screws and nuts. |
