Tail gas after-treatment assembly

Abstract

The utility model discloses a tail gas aftertreatment assembly. The tail gas after-treatment assembly comprises a shell, a carrier, heat insulation cotton located between the carrier and the shell in the radial direction of the tail gas after-treatment assembly, a first check ring assembly located on one side of the carrier in the axial direction of the tail gas after-treatment assembly, and a second check ring assembly located on the other side of the carrier in the axial direction of the tail gas after-treatment assembly. The first check ring assembly comprises a first check ring and first steel wool located between the first check ring and the carrier in the axial direction of the tail gas aftertreatment assembly. The second check ring assembly comprises a second check ring and second steel wool located between the second check ring and the carrier in the axial direction of the tail gas aftertreatment assembly. Compared with the prior art, the tail gas after-treatment assembly omits a traditional gasket, and cost is saved.

Description

Exhaust gas aftertreatment components Technical Field

[0001] This utility model relates to an exhaust gas aftertreatment component, belonging to the field of engine exhaust gas aftertreatment technology. Background Technology

[0002] Exhaust gas aftertreatment components in related technologies typically include a housing, a carrier, and a gasket that encapsulates the carrier within the housing.

[0003] In related technologies, the outer diameter of the shell is reduced to compress the liner, thereby increasing the frictional resistance between the carrier, the liner, and the shell, and preventing the carrier from moving axially and radially.

[0004] However, the packaging methods for the carriers in related technologies are relatively complex and the equipment investment costs are high. Therefore, there is still room for improvement in the exhaust gas aftertreatment components in related technologies. Summary of the Invention

[0005] The purpose of this invention is to provide a low-cost exhaust gas aftertreatment component.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an exhaust gas aftertreatment assembly, comprising a housing, a carrier, heat insulation cotton located radially between the carrier and the housing, a first retaining ring assembly located on one side of the carrier along the axial direction of the exhaust gas aftertreatment assembly, and a second retaining ring assembly located on the other side of the carrier along the axial direction of the exhaust gas aftertreatment assembly. The first retaining ring assembly includes a first retaining ring and a first steel wool located between the first retaining ring and the carrier along the axial direction of the exhaust gas aftertreatment assembly. The second retaining ring assembly includes a second retaining ring and a second steel wool located between the second retaining ring and the carrier along the axial direction of the exhaust gas aftertreatment assembly.

[0007] As a further improvement of the present invention, the first baffle ring is provided with a first plate body portion, the first plate body portion is provided with a first airflow opening, the first airflow opening is used to allow exhaust gas to pass through, so that the exhaust gas can flow through the carrier.

[0008] As a further improvement of the present invention, the first retaining ring is provided with a first flange portion integrally bent from the outer edge of the first plate body portion, and the first flange portion is welded and fixed to the inner wall of the shell.

[0009] As a further improvement of this utility model, the heat insulation cotton does not protrude into the first airflow opening along the radial direction of the exhaust gas aftertreatment component.

[0010] As a further improvement of the present invention, the second baffle ring is provided with a second plate body portion, and the second plate body portion is provided with a second airflow opening, which is used to allow the exhaust gas flowing through the carrier to exit.

[0011] As a further improvement of the present invention, the second retaining ring is provided with a second flange portion integrally bent from the outer edge of the second plate body portion, and the second flange portion is welded and fixed to the inner wall of the shell.

[0012] As a further improvement of this utility model, the heat insulation cotton does not protrude into the second airflow opening along the radial direction of the exhaust gas aftertreatment component.

[0013] As a further improvement of the present invention, the first flanged portion extends toward the second flanged portion, and the second flanged portion extends toward the first flanged portion.

[0014] As a further improvement of this utility model, the shell is in the shape of a hollow cylinder.

[0015] As a further improvement of this utility model, the first retaining ring assembly and the second retaining ring assembly are the same part with different installation angles.

[0016] Compared to existing technologies, the exhaust aftertreatment assembly of this invention omits the traditional gasket, utilizing the first and second retaining ring assemblies to limit the carrier and prevent axial movement. The heat insulation cotton restricts radial movement of the carrier and provides protection, shock absorption, and heat insulation. Attached Figure Description

[0017] Figure 1 is a cross-sectional schematic diagram of the exhaust gas aftertreatment component of this utility model in one embodiment. Detailed Implementation

[0018] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings. Where several specific embodiments exist, features in these embodiments can be combined with each other without conflict. When the description relates to the drawings, unless otherwise stated, the same numbers or symbols in different drawings represent the same or similar elements. The content described in the following exemplary embodiments does not represent all embodiments of this utility model; rather, they are merely examples of products consistent with this utility model and as described in the claims.

[0019] The terminology used in this invention is for the purpose of describing specific embodiments only and is not intended to limit the scope of protection of this invention. It should be understood that terms such as "first," "second," and similar words used in the specification and claims of this invention do not indicate any order, quantity, or importance, but are merely used to distinguish the features.

[0020] Referring to Figure 1, this utility model discloses an exhaust gas aftertreatment assembly 100, which includes a housing 1, a carrier 2, a heat insulation cotton 3 located between the carrier 2 and the housing 1 along the radial direction RR of the exhaust gas aftertreatment assembly 100, a first retaining ring assembly 41 located on one side of the carrier 2 along the axial direction OO of the exhaust gas aftertreatment assembly 100, and a second retaining ring assembly 42 located on the other side of the carrier 2 along the axial direction OO of the exhaust gas aftertreatment assembly 100.

[0021] The shell 1 is a hollow cylindrical shape.

[0022] The first retaining ring assembly 41 includes a first retaining ring 411 and a first steel wool 412 located between the first retaining ring 411 and the carrier 2 along the axial direction OO of the exhaust aftertreatment assembly 100.

[0023] The second retaining ring assembly 42 includes a second retaining ring 421 and a second steel wool 422 located between the second retaining ring 421 and the carrier 2 along the axial direction OO of the exhaust aftertreatment assembly 100. The first steel wool 412 and the second steel wool 422 can play a role in shock absorption and cushioning.

[0024] The first retaining ring 411 has a first plate portion 4111 and a first flange portion 4112 integrally bent from the outer edge of the first plate portion 4111. The first flange portion 4112 is welded and fixed to the inner wall of the housing 1. The first plate portion 4111 has a first airflow opening 4111a, which allows exhaust gas to pass through and flow through the carrier 2.

[0025] The second retaining ring 421 has a second plate portion 4211 and a second flange portion 4212 integrally bent from the outer edge of the second plate portion 4211. The second flange portion 4212 is welded and fixed to the inner wall of the housing 1. The second plate portion 4211 has a second airflow opening 4211a, which allows the exhaust gas flowing through the carrier 2 to exit.

[0026] In the embodiment illustrated in this utility model, the heat insulation cotton 3 does not protrude into the first airflow opening 4111a and the second airflow opening 4211a along the radial direction RR of the exhaust gas aftertreatment assembly 100, thereby preventing the heat insulation cotton 3 from obstructing the exhaust gas flow. Simultaneously, this design also prevents the heat insulation cotton 3 from being eroded by the exhaust gas. The heat insulation cotton 3 compresses and squeezes the carrier 2, limiting the radial RR movement of the carrier 2. The heat insulation cotton 3 also protects the carrier 2, preventing it from being misaligned and colliding with other parts. The heat insulation cotton 3 also serves to dampen shocks, insulate heat, and seal, preventing exhaust gas from passing directly without being treated by the carrier 2.

[0027] The first flange 4112 extends toward the second flange 4212, and the second flange 4212 extends toward the first flange 4112.

[0028] Preferably, the first retaining ring assembly 41 and the second retaining ring assembly 42 are the same part with different installation angles to save costs.

[0029] Compared to existing technologies, the exhaust aftertreatment assembly 100 of this utility model omits the traditional gasket, and uses the first retaining ring assembly 41 and the second retaining ring assembly 42 to limit the carrier 2, preventing axial movement of the carrier 2. The heat insulation cotton 3 can limit the radial movement of the carrier 2 and can also protect the carrier 2, reduce vibration, and provide heat insulation.

[0030] The exhaust gas aftertreatment component 100 of this utility model has at least the following beneficial effects:

[0031] Cost savings: Replacing the gaskets in related technologies with the first retaining ring assembly 41 and the second retaining ring assembly 42 saves costs.

[0032] Saves on production equipment investment: The process of fixing the carrier 2 is changed from squeezing the shell 1 to compressing the liner, and now the first retaining ring assembly 41 and the second retaining ring assembly 42 are welded together, eliminating the need for specific equipment.

[0033] The production process is simplified, improving production efficiency: the original complex packaging process is changed to a simple welding process.

[0034] High versatility: As long as the cross-section of the carrier 2 is the same, the same shell 1, the first retaining ring assembly 41 and the second retaining ring assembly 42 and other parts can be used, avoiding the differences in packaging process, gasket type, shell diameter and other factors caused by different external factors in traditional solutions.

[0035] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. The understanding of this specification should be based on those skilled in the art. Although the present utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still make modifications or equivalent substitutions to the present utility model. All technical solutions and improvements that do not depart from the spirit and scope of the present utility model should be covered within the scope of the claims of the present utility model.

Claims

1. An exhaust gas aftertreatment component, characterized in that, The assembly includes a housing, a carrier, thermal insulation cotton located radially between the carrier and the housing, a first retaining ring assembly located on one side of the carrier along the axial direction of the exhaust aftertreatment assembly, and a second retaining ring assembly located on the other side of the carrier along the axial direction of the exhaust aftertreatment assembly. The first retaining ring assembly includes a first retaining ring and a first steel wool located between the first retaining ring and the carrier along the axial direction of the exhaust aftertreatment assembly. The second retaining ring assembly includes a second retaining ring and a second steel wool located between the second retaining ring and the carrier along the axial direction of the exhaust aftertreatment assembly.

2. The exhaust gas aftertreatment component as described in claim 1, characterized in that: The first baffle ring has a first plate portion, and the first plate portion has a first airflow opening. The first airflow opening is used to allow exhaust gas to pass through, so that the exhaust gas can flow through the carrier.

3. The exhaust gas aftertreatment component as described in claim 2, characterized in that: The first retaining ring has a first flange portion integrally bent from the outer edge of the first plate body portion, and the first flange portion is welded and fixed to the inner wall of the shell.

4. The exhaust gas aftertreatment component as described in claim 2, characterized in that: The heat insulation cotton does not protrude radially into the first airflow opening along the exhaust gas aftertreatment assembly.

5. The exhaust gas aftertreatment component as described in claim 3, characterized in that: The second baffle ring is provided with a second plate body portion, and the second plate body portion is provided with a second airflow opening, which is used to allow the exhaust gas flowing through the carrier to exit.

6. The exhaust gas aftertreatment assembly as described in claim 5, characterized in that: The second retaining ring has a second flange portion integrally bent from the outer edge of the second plate body portion, and the second flange portion is welded and fixed to the inner wall of the housing.

7. The exhaust gas aftertreatment assembly as described in claim 6, characterized in that: The heat insulation cotton does not protrude radially into the second airflow opening along the exhaust gas aftertreatment assembly.

8. The exhaust gas aftertreatment assembly as described in claim 6, characterized in that: The first flange extends toward the second flange, and the second flange extends toward the first flange.

9. The exhaust gas aftertreatment assembly as described in claim 1, characterized in that: The shell is a hollow cylindrical shape.

10. The exhaust aftertreatment assembly as described in any one of claims 1 to 9, characterized in that: The first retaining ring assembly and the second retaining ring assembly are the same part with different installation angles.

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