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Mixer-integrated injection unit

An integrated mixer technology, applied in injection devices, liquid injection devices, engine components, etc., can solve the problems of easy crystallization of urea, difficulty in meeting the compact structure, and low integration, so as to achieve excellent mixing effect and reduce the risk of crystallization , the effect of compact structure

Active Publication Date: 2018-04-27
WUXI WEIFU LIDA CATALYTIC CONVERTER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the original design has the problem of uneven mixing of urea solution and exhaust gas, and urea is easy to crystallize on the mixer.
And the integration level is not high, it is difficult to meet the requirements of national V and national six box-type post-treatment nozzles for integration and compact structure

Method used

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  • Mixer-integrated injection unit
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Examples

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Embodiment Construction

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

[0014] Figure 1~3 Among them, including partition 1, sinking bowl 2, urea nozzle 3, blade 4, pipe 5, cone 6 and so on.

[0015] Such as Figure 1~3 As shown, the present invention is a mixer-integrated injection unit, including a conical member 6, the lower nozzle of the conical member 6 is fixedly connected to the hollow pipe member 5, and the inner wall surface of the conical member 6 is circumferentially evenly arranged with several blades 4. The sinking bowl 2 is embedded inside the blade 4, the urea nozzle 3 is fixed on the bottom of the sinking bowl 2 through the urea injection base, the urea nozzle 3 faces the direction of the pipe 5, and the surface of the cone 6 is fixed with a partition 1.

[0016] The distance between the upper surface of the separator 1 and the top surface of the cone 6 is 30 mm to 50 mm.

[0017] The middle ...

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Abstract

The invention belongs to the field of diesel engine tail gas after-treatment, and relates to a mixer integrated type spraying unit which comprises a conical piece. A hollow pipe fitting is fixedly connected with a pipe opening of the lower portion of the conical piece. A plurality of blades are circumferentially and evenly distributed on the surface of the inner wall of the conical piece. Sink bowl pieces are embedded in the inner sides of the blades. A urea nozzle is fixed to the bottom of each sink bowl piece through a urea spraying base and faces towards the pipe fitting. A partition plate is fixed to the surface of the conical piece. The spraying unit is compact and reasonable in structure, and the effects of being good in urea mixing effect and free of urea crystallization can be achieved during work.

Description

technical field [0001] The invention belongs to the field of post-treatment of diesel engine exhaust, and relates to a mixer-integrated injection unit. Background technique [0002] With the full implementation of my country's national IV standards for limiting diesel vehicle exhaust emissions, SCR (Selective Reduction Catalyst) technology has gradually become the exhaust gas treatment route chosen by major engine factories and after-treatment suppliers in my country. SCR technology is to coat platinum, palladium and other precious metals on the carrier, and spray urea solution into the exhaust gas. When the exhaust gas mixed with urea solution enters the catalyst, the NOx in the exhaust gas will be greatly reduced under the catalysis of platinum, palladium and other precious metals. In this way, the exhaust gas can be treated to meet the emission standards of China IV and above. [0003] A key technology of SCR technology is to fully mix urea solution with air and evenly e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05B7/04F01N3/20
CPCB05B7/0483F01N3/2066F01N2610/02F01N2610/1453Y02T10/12
Inventor 胡正飞陈增响何伟娇郎帅国刘洋
Owner WUXI WEIFU LIDA CATALYTIC CONVERTER
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