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Urea nozzle

A technology of urea nozzles and nozzles, applied in the direction of machines/engines, mechanical equipment, engine components, etc., can solve problems such as nozzle atomization and nozzle cooling

Active Publication Date: 2022-04-29
WUXI WEIFU LIDA CATALYTIC CONVERTER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the urea injection system faces two major problems: one is the cooling problem of the nozzle, and the other is the atomization problem of the nozzle

Method used

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Embodiment Construction

[0022] In order to make the above purpose, features and advantages of the application more obvious and easy to understand, the specific embodiment of the application is described in detail below in combination with the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the application. However, the application can be implemented in many ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the application. Therefore, the application is not limited by the specific embodiments disclosed below.

[0023] In the description of this application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial" The azimuth or positio...

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Abstract

The urea nozzle comprises a cooling sleeve, a heat dissipation sleeve, a spray head and an ejector, an air inlet connector and a liquid inlet connector are arranged on the cooling sleeve, the heat dissipation sleeve communicates with the cooling sleeve, a first air outlet hole is formed in the heat dissipation sleeve, and a liquid outlet hole and at least two second air outlet holes are formed in the spray head; the ejector is arranged in the cooling sleeve and the heat dissipation sleeve and communicates with the liquid inlet connector and the liquid outlet hole. Compressed air can enter the cooling sleeve through the air inlet connector to make contact with the ejector, so that heat on the ejector is taken away, and the heat dissipation and cooling effects are achieved. Part of the compressed air carrying heat is discharged through the first air outlet hole, and the other part of the compressed air is discharged through the second air outlet hole; when the compressed air is blown out through the second air outlet hole, the urea solution can be blown in multiple directions, and the urea solution is atomized by means of airflow pressure; the first air outlet holes can increase the discharge channel of the compressed air, so that the stability of the air inlet amount and the air outlet amount of the compressed air is ensured, fresh compressed air can enter the cavity conveniently, and the heat dissipation effect is achieved.

Description

technical field [0001] The application relates to the technical field of automobile exhaust treatment device, in particular to a urea nozzle. Background technology [0002] Automobile exhaust contains harmful gases such as CO (carbon monoxide), HC (hydrocarbon) and NOx (nitrogen oxide). In order to protect the environment and human body, automobile exhaust needs to be purified. [0003] Selective catalytic reduction (SCR) is a treatment process for NOx in automobile exhaust. Specifically, after the tail gas enters the SCR equipment, the reducing agent ammonia or urea is injected into it. Under the action of catalyst, NOx will be reduced to nitrogen and oxygen. [0004] Urea injection system is the core of SCR post-treatment system, and nozzle is the key component of urea injection system, which determines the effect of urea atomization. At present, the urea injection system faces two major problems: one is the cooling of the nozzle, the other is the atomization of the nozzle. su...

Claims

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Application Information

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IPC IPC(8): F01N3/20
CPCF01N3/2066F01N2610/02F01N2610/1453F01N2570/10F01N2570/14F01N2570/12Y02A50/20Y02T10/12
Inventor 陈正国董伟苗垒
Owner WUXI WEIFU LIDA CATALYTIC CONVERTER
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