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A multi-lobe concentrating soot swirl mixing partition and exhaust after-treatment device

A swirl mixing and soot technology, which is applied to exhaust treatment, exhaust devices, mufflers, etc., can solve the problems of unsatisfactory mixing effect of airflow and soot, uneven distribution of soot particles, large temperature gradient, etc. Achieve the effect of improving uniformity, reducing the uniformity of temperature distribution, and reducing the influence of centrifugal force

Active Publication Date: 2021-04-06
WUXI WEIFU LIDA CATALYTIC CONVERTER
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a multi-lobe concentrating soot swirl mixing partition, which can solve the unsatisfactory mixing effect of airflow and soot, the uneven distribution of soot particles in the DPF system and the DPF regeneration process Problems where temperature gradients are too large and long mixing distances are not required

Method used

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  • A multi-lobe concentrating soot swirl mixing partition and exhaust after-treatment device
  • A multi-lobe concentrating soot swirl mixing partition and exhaust after-treatment device
  • A multi-lobe concentrating soot swirl mixing partition and exhaust after-treatment device

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Embodiment Construction

[0024] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0025] Figure 1-6 , including intake pipe assembly 1, multi-lobe converging soot swirl mixing plate 2, conical orifice plate 2-1, orifice plate connection end 2-11, orifice plate middle exhaust end 2-12, soot side Exit 2-13, swirl blade 2-2, swirl cladding plate 2-21, swirl top plate 2-22, soot swirl outlet 2-23, support plate 2-3, soot inlet 2-31, DOC Component 3, DPF component 4, urea mixer component 5, SCR component 6, exhaust tailpipe component 7, etc.

[0026] Such as Figures 1 to 2 As shown, the present invention is a kind of exhaust post-processing device, and the exhaust post-processing device consists of an intake pipe assembly 1, a multi-lobe concentrating soot swirl mixing plate 2, a DOC assembly 3, a DPF assembly 4, and a urea mixing The device assembly 5, the SCR assembly 6 and the exhaust tailpipe assembly 7 and other comp...

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Abstract

The invention relates to a multi-lobe concentrating soot swirl mixing partition and an exhaust post-processing device, comprising a support plate, a swirl vane is arranged in the support plate, a conical orifice plate is arranged on the outer periphery of the swirl vane, and an opening is opened on the support plate. There are several soot inlets, swirl blades are set on one side of the soot inlet, the swirl blades include a swirl cladding plate, a swirl top plate is set on the top of the swirl cladding plate, and the swirl blades have a soot swirl outlet; the conical orifice plate The two ends are the connection end of the orifice plate and the exhaust end in the middle of the orifice plate respectively, the connection end of the orifice plate is connected with the support plate, and the side outlet of soot is opened on the conical orifice plate. In the present invention, the splitting, disturbing and mixing of the airflow and the soot particles are realized by adopting the multi-lobed central swirl plate. The five petal-shaped swirl blades can not only divide the airflow and soot into five parts, but also form a stronger swirling airflow.

Description

technical field [0001] The invention belongs to the technical field of engine exhaust aftertreatment, and relates to a multi-lobe converging soot swirl mixing partition and an exhaust aftertreatment device. Background technique [0002] In the application technology of DOC+DPF+SCR system, due to the existence of DPF carbon deposits and the active regeneration process of soot, it is required that the distribution of soot on DOC and DPF should be as uniform as possible, so as to facilitate the uniform regeneration of soot particles and the control of system back pressure . In the industry, the soot distribution uniformity UI on the intake end surface of DOC and DPF is used to characterize it. When the soot distribution uniformity UI is low, soot accumulates quickly locally, which is prone to blockage, resulting in back pressure and fuel consumption. In severe cases, it may even cause the DPF to fail. In the active regeneration process of DPF, the temperature field distributi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01N13/00F01N3/28
CPCF01N3/2892F01N13/00F01N2240/20F01N2250/02
Inventor 陈增响何龙何伟娇马相雪付细平
Owner WUXI WEIFU LIDA CATALYTIC CONVERTER
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