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Two-stage vortex pump

A swirl pump and pump body technology, applied in radial flow pumps, pumps, pump components, etc., can solve the problems of high manufacturing cost, high manufacturing difficulty, complex structure of swirl pump, etc., and achieve low manufacturing cost and manufacturing difficulty. Small, simple structure

Inactive Publication Date: 2017-07-14
JOHNSON PRECISION ENG SUZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

That is to say, the existing swirl pumps need to be equipped with additional components to balance the axial force of the impeller, which leads to the existing swirl pumps with complex structure, high manufacturing difficulty and high manufacturing cost

Method used

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  • Two-stage vortex pump

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Embodiment Construction

[0018] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are exemplary, and are only used to explain the present invention, but should not be construed as limiting the present invention.

[0019] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientation or positional relationship indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer" etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and The description is simplified, rather than indicating or imply...

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Abstract

The invention discloses a two-stage vortex pump. The two-stage vortex pump comprises a pump body, a pump cover, a shaft, first-stage impellers and second-stage impellers, wherein a feeding port and a discharging port are formed in the pump body, the pump cover is arranged on the pump body, the shaft is rotatably arranged on the pump body through bearings, each of the first-stage impellers and the second-stage impellers is arranged on the shaft in a sleeving mode, each of the first-stage impellers and the second-stage impellers is located in the pump body, the shape of the first-stage impellers is the same as that of the second-stage impellers, the size of the first-stage impellers is the same as that of the second-stage impellers, and the first-stage impellers and the second-stage impellers are symmetrical relative to one radial section of the shaft. The two-stage vortex pump has the advantages that the axial force of the impellers is automatically balanced, the structure is simple, the manufacturing difficulty is low, the manufacturing cost is low and the like.

Description

Technical field [0001] The present invention relates to a swirl pump, in particular to a two-stage swirl pump. Background technique [0002] Taking into account the cavitation factor, the inlet diameter of the first stage impeller of the existing two-stage pump is always larger than the inlet diameter of the secondary impeller, resulting in an imbalance of the axial force generated by the two impellers, which will significantly reduce the bearing life of the pump , Affect the operation reliability of the pump. [0003] In order to balance the axial force of the impeller, the existing swirl pump either adds a balance disc, a balance ring, a balance chamber, etc., or sets auxiliary vanes on the impeller. In other words, the existing swirl pump needs to be provided with additional components to balance the axial force of the impeller, which results in the existing swirl pump with complicated structure, high manufacturing difficulty and high manufacturing cost. Summary of the inventi...

Claims

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Application Information

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IPC IPC(8): F04D29/22F04D29/041F04D1/06
CPCF04D1/06F04D29/041F04D29/185F04D29/2216
Inventor 王强谷云庆孙跃林
Owner JOHNSON PRECISION ENG SUZHOU
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