| 摘要 |
A screw-centrifugal pump contains an electrical drive, a body with a driving shaft, a working element, an intermixing device, a forcing spout, a lifting mechanism. The lifting mechanism is made as a traction working element with a cable and a cable and block system and an axis with joints and it contains a cramp-iron, the ends of which are redirected downwards and arranged in the joints in such a manner as to allow fixing thereof. An anchorage point of the cable of the cable and block system is arranged on the same vertical line as the centre of gravity of the pump, and the axis of the joints is placed with a shift as regards to the centre of gravity of the pump in the direction of the electrical drive.
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