离心泵的基本构造是由六部分组成的，分别是：叶轮，泵体，泵轴，轴承，密封环，填料函。
Basic structure of the centrifugal pump is composed of six parts, namely: impeller, pump, pump shaft, bearing, seal ring, stuffing box.
为防止轴穿出泵壳处轴周围的泄漏，使用填料或密封。
Packing or seals are used to prevent the pump leaking around the shaft where it emerges from the pump case.
泵轴端密封设计为两种形式，一种为机械密封，一种是填料密封，可根据具体使用情况和用户要求确定。
Pump shaft seal is designed to end in two forms, one for the mechanical seal, one is packing seal, may be based on specific usage and user requirements to determine.
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