Self-balancing multistage radial centrifugal pump

一种自平衡多级径向离心泵

Abstract

本发明公开了一种自平衡多级径向离心泵,包括泵轴、左轴承体、左轴承支架、拉紧螺母、左泵盖、吸入段、左机械密封、拉紧螺栓、平衡水管、叶轮、导叶、中段、吐出段、右泵盖、鼓盘鼓结构、右机械密封、右轴承支架、右轴承体、弹性垫圈、第一平衡鼓、平衡盘、第二平衡鼓;本发明鼓盘鼓结构能够提供轴向辅助支撑,大幅度减小整个离心泵泵轴轴系的轴向力,改善多级径向离心泵泵轴的受力状态,提高泵轴的使用年限;叶轮、导叶为精密铸造成型,吸入段、吐出段及中段为锻造机械加工成型,水力摩擦损失低,承压性能优异,泵效率高;轴承体为稀油自润滑结构,能有效的冷却轴承运转中产生的热量,提高轴承使用寿命及安全性。
The invention discloses a self-balancing multistage radial centrifugal pump. The self-balancing multistage radial centrifugal pump comprises a pump spindle, a left bearing body, a left bearing support, a tightening nut, a left pump cover, a suction casing, a left mechanical seal, a tightening bolt, a balance water pipe, an impeller, guide vanes, a middle case, a discharging casing, a right pump cover, a drum disc drum structure, a right mechanical seal, a right bearing support, a right bearing body, an elastic gasket, a first balancing drum, a balancing disc and a second balancing drum. The drum disc drum structure can provide axial auxiliary supporting, the axial force of a whole centrifugal pump spindle shaft system can be greatly reduced, the stress state of a multistage radial centrifugal pump spindle can be improved, and the service life period of the pump spindle can be prolonged. The impeller and the guide vanes are precisely cast, the suction casing, the discharging casing and the middle casing are machine-shaped through forging machines, hydraulic friction losses are low, the pressure bearing performance is excellent, and the pump efficiency is high. The bearing body is of a thin oil self-lubricating structure, heat generated during operation of a bearing can be effectively cooled, the service life of the bearing can be prolonged, and the safety of the bearing can be improved.

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