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Centrifugal pump with rectangular gear pump front cavity structure

A rectangular tooth, centrifugal pump technology, applied to the components, pumps, pump elements and other directions of the pumping device for elastic fluid, can solve the problems of low attention to the flow characteristics of the front cavity and no design route of the front cavity, etc. Increase drag, eliminate vortex and backflow, reduce energy effects

Inactive Publication Date: 2016-01-13
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In the traditional pump design, not only there is no design route for the front chamber, but also the flow characteristics of the front chamber are not paid much attention to

Method used

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  • Centrifugal pump with rectangular gear pump front cavity structure
  • Centrifugal pump with rectangular gear pump front cavity structure
  • Centrifugal pump with rectangular gear pump front cavity structure

Examples

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Embodiment Construction

[0015] In the present invention, the centrifugal pump is taken as an example, and the interfitting rectangular teeth added in the front cavity are as follows: figure 1 As shown; the structure is composed of ring-shaped rectangular teeth that cooperate with each other, which are staggered on the inner side of the front pump cover and the outer side of the impeller front cover. )×bs, 4mm is taken here, where bs is the thickness of the front cover where the corresponding rectangular tooth is located, in this example, bs=5mm; and the distance between the tooth top of each rectangular tooth and the tooth root of the adjacent rectangular tooth The axial distances between them are equal, that is, τ 1 , τ 1 Take a value in (0.1~0.2)×b, here take 1mm, where b is the axial width of the front cavity in the meridional section, in this example b=10mm; the radial distance between every two rectangular teeth for τ 2 , τ 2 Take a value in (0.2~0.3)×δ, here take 1mm; for example figure 2...

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Abstract

The invention relates to a centrifugal pump, in particular to a centrifugal pump with a rectangular gear pump front cavity structure. A set of matched annular rectangular teeth are additionally arranged in a cavity (front cavity) between a front pump cover and an impeller front cover plate of the centrifugal pump, and therefore resistance of fluid leakage is increased, meanwhile, vortex and backflow in the front cavity are eliminated to a certain degree, hydraulic losses are reduced, and efficiency is improved.

Description

technical field [0001] The patent of the present invention relates to a centrifugal pump, in particular to a centrifugal pump with a front chamber structure of a rectangular toothed pump, in which mutually matching rectangular teeth are added to the cavity between the front pump cover of the pump and the front cover plate of the impeller. Background technique [0002] As an important part of fluid machinery, pumps are widely used in various industries. Improving the efficiency of pumps, improving the working conditions and environment of impellers has important social value and urgent practical needs. The front chamber is a part of the pump chamber, and the impeller outlet, volute inlet and impeller inlet are connected. Its flow is not only directly affected by these three, but also affects the flow of these three. The flow structures such as vortex and backflow generated in the front cavity not only consume the energy of the fluid, but also increase the burden on the workma...

Claims

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Application Information

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IPC IPC(8): F04D1/00F04D29/22F04D29/42
Inventor 高波王震张宁杨丽
Owner JIANGSU UNIV
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