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双吸泵的结构特点
作者: 更新日期:2021-12-31 09:41 浏览次数:
双吸泵其实是离心泵的一种重要方式,双吸泵的高速运转表现了它的性能优秀,被普遍应用在城市供水,排水,农田灌溉等范畴,那么它有何构造特性呢?可以受如此欢送呢。我们简单理解一下。
  1、构造紧凑:外形美观,稳定性好,便于装置。
  2、运转平稳:优化设计的双吸叶轮使轴向力减小到较低限度,且有优良水力性能的叶型,并经精细铸造,泵壳内外表及叶轮外表润滑具有显着的抗汽蚀性能和高效率。
  3、轴封:选用BURGMANN机械密封或填料密封。能保证8000小时运转无走漏。
  4、轴承:选用SKF及NSK轴承保证运转平稳,噪音低,运用寿命长。
  5、装置方式:装配时不需调整,可依据现场运用条件。分立式或卧式装置。
  双吸泵的叶轮能够视为由两个单吸叶轮背靠背后组成,就像两个叶轮对称布置,因而能够以为工作时不会产生轴向力。但由于制造和装配上的缘由,总有尺寸偏向,不可能做到对称,加之液流也不可能对称,因此必然还有剩余轴向力。因而普通双吸离心泵上均装有径向滚动轴承,以接受剩余轴向力。
                                                 双吸泵
Double suction pump is actually an important form of centrifugal pump. The high-speed operation of double suction pump reflects its excellent performance and is widely used in urban water supply, drainage, farmland irrigation and other fields. What are its structural characteristics? Can be so popular. Let's have a brief look.
1. Compact structure: beautiful appearance, good stability and easy installation.
2. Stable operation: the optimized double suction impeller reduces the axial force to a lower limit and has excellent hydraulic performance. After precision casting, the inner surface of the pump shell and the impeller surface are smooth, with significant cavitation resistance and high efficiency.
3. Shaft seal: use Burgmann mechanical seal or packing seal. It can ensure 8000 hours of operation without leakage.
4. Bearing: SKF and NSK Bearings are selected to ensure stable operation, low noise and long service life.
5. Installation form: it does not need to be adjusted during assembly, and it can be adjusted according to the on-site service conditions. Split or horizontal installation.
The impeller of the double suction pump can be regarded as composed of two single suction impellers back-to-back, just like the two impellers are symmetrically arranged, so it can be considered that there will be no axial force during operation. However, due to manufacturing and assembly reasons, there are always dimensional deviations, so it is impossible to be symmetrical. In addition, the liquid flow is also impossible to be symmetrical, so there must be residual axial force. Therefore, the general double suction centrifugal pump is equipped with radial rolling bearings to bear the residual axial force.