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Improved multi-stage centrifugal pump

An improved centrifugal pump technology, applied in the direction of pumps, pump components, non-variable pumps, etc., can solve the problems of poor reliability, high cost, poor stability, etc., to improve operational reliability and stability, Good stability and good reliability

Inactive Publication Date: 2008-09-24
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the disadvantages of poor stability, poor reliability and high cost of existing multistage centrifugal pumps, the present invention provides an improved multistage centrifugal pump with good stability, good reliability and reduced cost

Method used

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  • Improved multi-stage centrifugal pump

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with the accompanying drawings.

[0014] Refer to figure 1 , An improved multi-stage centrifugal pump, including a pump shaft 6, a bearing body part 5, an impeller, a suction section 2 and a discharge section 10, the suction section 2 and the discharge section 10 are respectively located at the left and right ends of the pump shaft 6, in A bearing body part 5 is installed at the middle position of the pump shaft 6. There are at least two impellers. The impellers are installed on the left and right sides of the pump shaft 6 respectively. The bearing body parts 5 are used as the impellers on the left and right sides. The center is symmetrically arranged.

[0015] There are four impellers, and two impellers are respectively installed on the left and right sides of the pump shaft. Or: there are six impellers, and three impellers are respectively installed on the left and right sides of the pump shaft. Or: ther...

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Abstract

An improved multi-grade centrifugal pump includes a pump axis, a bearing body part, impellers, an inhalation segment and a disgorge segment. The inhalation segment and the disgorge segment are respectively arranged on the left and the right ends of the pump axis. The bearing body part is installed on the middle position of the pump axis. The impellers are provided at least two. The impellers are respectively installed on the left and the right sides of the pump axis. The impellers which are arranged on the left and the right sides are arranged with the center of the bearing body part. The invention provides the improved multi-grade centrifugal pump which has the advantages of good stability, good reliability and lowered cost.

Description

Technical field [0001] The invention relates to a multi-stage centrifugal pump. Background technique [0002] Multi-stage centrifugal pump is a very important general-purpose mechanical product. There are two main types of multi-stage centrifugal pumps with traditional structure. The overall length is long, and the axial force balance device must be specially designed. The stability and reliability of the pump are not very ideal, and the cost is increased. The other is a cantilever structure. The bearing body parts are arranged on one side of the impeller part, and the impeller is in a suspended state when working. The stability and reliability of this structure are even worse, and an axial force balance device must be designed. Due to the poor stability of this structure, the number of stages of the impeller must be strictly controlled, so that the total head of the pump is limited. Summary of the invention [0003] In order to overcome the disadvantages of poor stability, poor...

Claims

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Application Information

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IPC IPC(8): F04D29/04F04D29/041F04D29/05F04D29/051F04D29/24F04D29/30
Inventor 牟介刚郑水华周金鑫邓鸿英张生昌李思
Owner ZHEJIANG UNIV OF TECH