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Radial injecting mixer for mixing exhaust gas and reducing agent fluid

A technology for injecting mixers and reducing agents, which is applied in exhaust treatment, exhaust devices, machines/engines, etc., can solve the problems of easy air leakage and increased space occupied by mixers, and achieves increased uniformity and reduced pressure. drop, compact structure

Active Publication Date: 2018-06-22
WUXI WEIFU LIDA CATALYTIC CONVERTER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this fluid injection method, it is usually necessary to arrange the injector on the peripheral wall of the mixer, which not only leads to an increase in the radial occupied space of the mixer, but also is prone to air leakage and other failures

Method used

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  • Radial injecting mixer for mixing exhaust gas and reducing agent fluid
  • Radial injecting mixer for mixing exhaust gas and reducing agent fluid

Examples

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with specific drawings and embodiments.

[0024] Such as Figure 1-2 Shown: a radial jet mixer for mixing exhaust gas and reducing agent fluid, including a cylindrical cylinder 2, the outer wall of the cylinder 2 is provided with a reducing agent injection base 4, and the cylinder enters The gas end is provided with a first swirl partition 1, and the first swirl partition 1 is provided with a plurality of semicircular through holes 1.1, and on the inner wall of the first swirl partition 1, each through hole The lower end is provided with a hemispherical wall plate 1.2;

[0025] At the rear end of the swirl partition 1, a second swirl partition 3 is provided along the inner wall of the cylinder, and the second swirl partition 3 includes a first part 3.1, a second part 3.2, and a third part 3.3 , the first part is cylindrical and is arranged close to the inner wall of the cylinder, the second part is a...

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PUM

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Abstract

The invention provides a radial injecting mixer for mixing exhaust gas and reducing agent fluid. The radial injecting mixer comprises a cylindrical barrel body, a reducing agent injecting base is arranged on the outer wall of the cylinder body; a first rotational flow partition plate is arranged at an air inlet end of the cylinder body; a plurality of semi-circular through holes are formed in thefirst rotational flow partition plate, the lower end of each through hole is provided with a hemispherical wall plate on the inner wall of the first rotational flow partition plate; a second rotational flow partition plate is arranged along the inner wall of the cylinder body at the rear end of the rotational flow partition plate; expanding partition plates are arranged along the inner wall of thecylinder body; and the reducing agent injecting base comprises a supporting plate and a supporting column, the supporting plate is of a generally triangular structure, and a nozzle is arranged on thesupporting plate, an injecting hole is formed in the center of the supporting plate, and the supporting column is arranged at the lower end of the supporting plate. According to the radial injectingmixer for the mixing exhaust gas and the reducing agent fluid, the radial injecting mixer is fully mixed with the radially injected reducing agent fluid, so that the uniformity of the reducing agent is improved, the sufficient reaction of the nitrogen oxide is realized, and the pollutant emission of the automobile is reduced.

Description

technical field [0001] The invention relates to the field of post-treatment of diesel exhaust gas, in particular to a radial jet mixer for mixing exhaust gas and reducing agent fluid. Background technique [0002] Regulations around the world regarding emissions from internal combustion engines are becoming increasingly stringent. It is difficult to meet the current stringent emission standards by improving the combustion technology of the internal combustion engine itself. Therefore, exhaust after-treatment devices have been widely used in various internal combustion engine systems, especially vehicles using internal combustion engines, to further reduce emissions. A typical vehicle exhaust aftertreatment device that can be used to reduce nitrogen oxide (NOx) emissions usually includes a mixer for mixing exhaust gas and reducing agent fluid, and a downstream device that promotes the reduction reaction of nitrogen oxides in exhaust gas. Reactor. [0003] In the current in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N3/28F01N3/20
CPCF01N3/2066F01N3/2892F01N2610/1453Y02A50/20
Inventor 郭鑫陈增响何龙张俊超张旭
Owner WUXI WEIFU LIDA CATALYTIC CONVERTER
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