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Stepped venturi mixer

A Venturi mixer and step-type technology, applied in the directions of fluid mixers, mixers, chemical instruments and methods, can solve the problems of uneven mixing efficiency, increase the disturbance intensity, destroy the boundary layer, etc. Mixing efficiency, enhanced mixing effect, easy processing effect

Active Publication Date: 2016-02-03
DAQING HUALI MECHANICAL MFG
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] In order to solve the above-mentioned problems in the prior art, the object of the present invention is to provide a stepped Venturi mixer, which can effectively increase the disturbance intensity, destroy the boundary layer of the mixed fluid at the same time, and improve the stability near the wall surface of the expansion section. The flow field flow fully reduces the influence of the boundary layer on the mixing effect, avoids the problems of uneven mixing and low mixing efficiency caused by the high flow rate of the mainstream fluid or the large flow rate of the introduced fluid, and makes the present invention applicable to a wider range of applications. The flow rate ratio of the incoming fluid to the mainstream fluid in the range

Method used

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Embodiment Construction

[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] Such as figure 1 As shown, a stepped Venturi mixer of the present invention includes a main flow fluid inflow pipeline 1, a constriction section 2, a throat section 3, an expansion section 4, a mixed fluid outflow pipeline 5 and a throat section 3, which are connected in sequence and flow into the inlet fluid. The introduction tube 6, the contraction section 2 and the expansion section 4 are all stepped. The mainstream fluid flows from the mainstream fluid into the pipe 1 and enters the constriction section 2. The stepped structure of the constriction section 2 causes the mainstream fluid to generate a series of vortices at the diameter change of the constriction section 2. As the flow velocity of the mainstream fluid continues to increase, the constriction section 2 The generated vortex further spreads to the center of the th...

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Abstract

The invention discloses a stepped venturi mixer. The stepped venturi mixer comprises a mainstream fluid inflow pipeline, a contraction section, a throat part, a divergent section and a mixed fluid outflow pipeline as well as an inlet pipe which is arranged on the throat part and in which an introduced fluid flows; the contraction section and the divergent section are stepped; the stepped structure of the contraction section enables vortex to be generated in a mainstream fluid, and draws and absorbs the introduced fluid at the throat part; the stepped structure of the divergent section enables vortex to be generated in a mixed fluid consisting of the mainstream fluid and the introduced fluid. According to the invention, the turbulent intensity of the fluid in the mainstream venturi pipe is reinforced effectively; the phenomenon of non-even mixing is enhanced; the mixing efficiency is enhanced, so that the mixing effect of the mainstream fluid and the introduced fluid is enhanced obviously.

Description

technical field [0001] The invention relates to a mixer, in particular to a stepped Venturi mixer. Background technique [0002] Venturi mixer is an important gas-liquid or liquid-liquid mixing device, which is widely used in engineering practice. The commonly used Venturi mixer is a classic Venturi tube with an opening in the throat. The mainstream fluid flows through the classic Venturi tube and generates negative pressure in the throat, so that the incoming fluid is sucked from the opening and collides with the mainstream fluid. , Broken to form a mixed turbulent fluid, so as to achieve the purpose of mixing. However, the disturbance intensity in the existing Venturi mixer is small, and there are problems such as uneven mixing and low mixing efficiency. Contents of the invention [0003] In order to solve the above-mentioned problems in the prior art, the object of the present invention is to provide a stepped Venturi mixer, which can effectively increase the disturba...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F5/04
Inventor 孔伟佳刘明吴东垠
Owner DAQING HUALI MECHANICAL MFG
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