Exhaust gas aftertreatment device

Abstract

An exhaust gas aftertreatment device, which comprises a shell, a first end cover fixed to one end of the shell, a second end cover fixed to the other end of the shell, and a bracket assembly fixed on the second end cover and protruding from the second end cover, the bracket assembly comprising a first bracket in L shape and a second bracket in L shape, the first bracket comprising a first fixing part and a first supporting part, the first supporting part being provided with a first mounting hole; the second bracket comprising a second fixing part and a second supporting part, the second supporting part being provided with a second mounting hole; the first fixing part and the second fixing part being fixed to the second end cover, the first supporting part and the second supporting part overlapping, and the first mounting hole and the second mounting hole being in communication. By arranging the above bracket assembly, the structure of the exhaust gas aftertreatment device is simplified.

Description

Technical Field

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

[0002] Exhaust aftertreatment devices in related technologies typically include a housing, a first end cover, a second end cover, several baffles, and exhaust aftertreatment components located within the housing. To enable the exhaust aftertreatment device to be mounted on a vehicle body bracket, the housing is typically equipped with a mounting bracket.

[0003] However, the mounting bracket structure in related technologies is relatively complex. Utility Model Content

[0004] The purpose of this invention is to provide a simple exhaust gas aftertreatment device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an exhaust gas aftertreatment device, comprising a housing, a first end cap fixed to one end of the housing, a second end cap fixed to the other end of the housing, and a bracket assembly fixed to the second end cap and protruding from the second end cap. The bracket assembly includes an L-shaped first bracket and an L-shaped second bracket. The first bracket includes a first fixing part and a first supporting part, and the first supporting part is provided with a first mounting hole. The second bracket includes a second fixing part and a second supporting part, and the second supporting part is provided with a second mounting hole. The first fixing part and the second fixing part are fixed to the second end cap. The first supporting part overlaps with the second supporting part, and the first mounting hole communicates with the second mounting hole.

[0006] As a further improvement of this utility model, the first bracket is the same as the second bracket, so that parts can be shared.

[0007] As a further improvement of the present invention, the first fixing part and the second fixing part extend in opposite directions, and the first fixing part and the second fixing part are located in the same plane.

[0008] As a further improvement of this utility model, both the first mounting hole and the second mounting hole are two in number.

[0009] As a further improvement of the present invention, the bracket assembly further includes a fixing plate fixed to the second end cover, a first mounting post protruding from the fixing plate, and a second mounting post protruding from the fixing plate, wherein the first mounting post and the second mounting post are arranged side by side.

[0010] As a further improvement of the present invention, the exhaust gas aftertreatment device further includes a first baffle, a second baffle disposed in the housing, and an exhaust gas aftertreatment carrier assembly mounted on the first baffle and the second baffle.

[0011] The exhaust gas aftertreatment device includes a first cavity located between the first end cover and the first baffle, a second cavity located between the first baffle and the second baffle, and a third cavity located between the second baffle and the second end cover;

[0012] The exhaust gas aftertreatment device includes an intake pipe connected to the second chamber and an exhaust pipe connected to the third chamber.

[0013] As a further improvement of the present invention, the air intake pipe is provided with a plurality of airflow perforations penetrating its pipe wall, and the airflow perforations are connected to the second cavity;

[0014] The first baffle has an opening that connects the second cavity and the first cavity;

[0015] The second cavity and the third cavity are not directly connected due to the obstruction of the second baffle;

[0016] One end of the exhaust gas aftertreatment carrier assembly is connected to the first cavity, and the other end of the exhaust gas aftertreatment carrier assembly is connected to the third cavity.

[0017] As a further improvement of the present invention, the exhaust gas aftertreatment device includes a reinforcing plate fixed between the first end cover and the first baffle. The reinforcing plate divides the first cavity into a first sub-cavity located on one side of the reinforcing plate and a second sub-cavity located on the other side of the reinforcing plate. The first sub-cavity is connected to the opening. The reinforcing plate is provided with a plurality of through holes connecting the first sub-cavity and the second sub-cavity.

[0018] As a further improvement of the present invention, the exhaust gas aftertreatment device includes a plurality of reinforcing rods fixed between the first baffle and the second baffle.

[0019] As a further improvement of this utility model, the housing, the first end cap, and the second end cap are all provided with outwardly raised reinforcing protrusions.

[0020] Compared to existing technologies, the bracket assembly of this utility model includes an L-shaped first bracket and an L-shaped second bracket. The first bracket includes a first fixing part and a first supporting part, and the first supporting part is provided with a first mounting hole. The second bracket includes a second fixing part and a second supporting part, and the second supporting part is provided with a second mounting hole. The first fixing part and the second fixing part are fixed to the second end cap. The first supporting part and the second supporting part overlap, and the first mounting hole and the second mounting hole communicate with each other. By setting the above bracket assembly, the structure of the exhaust gas aftertreatment device of the utility model is simplified, the local rigidity of the parts is increased, and the stability of the structure is improved. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of one embodiment of the exhaust gas aftertreatment device of this utility model;

[0022] Figure 2 yes Figure 1 The main view;

[0023] Figure 3 It is to remove Figure 1 A three-dimensional schematic diagram of the shell behind the interior;

[0024] Figure 4 yes Figure 1 Partial exploded 3D diagram. Detailed Implementation

[0025] 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.

[0026] 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.

[0027] Please refer to Figures 1 to 4As shown, this utility model discloses an exhaust gas aftertreatment device 100, suitable for treating the exhaust gas of a diesel engine. The exhaust gas aftertreatment device 100 includes a housing 1, a first end cap 2 fixed to one end of the housing 1, a second end cap 3 fixed to the other end of the housing 1, a bracket assembly 4 fixed to the second end cap 3 and protruding from the second end cap 3, a first baffle 5 and a second baffle 6 disposed in the housing 1, and an exhaust gas aftertreatment carrier assembly 7 mounted on the first baffle 5 and the second baffle 6.

[0028] In the embodiment illustrated in this utility model, the bracket assembly 4 includes an L-shaped first bracket 41 and an L-shaped second bracket 42. In one embodiment of this utility model, the first bracket 41 and the second bracket 42 are thin-plate stamping parts to simplify the structure and save costs. The first bracket 41 includes a first fixing part 411 and a first supporting part 412, and the first supporting part 412 is provided with a first mounting hole 4121. The second bracket 42 includes a second fixing part 421 and a second supporting part 422, and the second supporting part 422 is provided with a second mounting hole 4221. The first fixing part 411 and the second fixing part 421 are fixed to the second end cap 3. In one embodiment of this utility model, the first fixing part 411 and the second fixing part 421 are welded to the second end cap 3. The first supporting part 412 and the second supporting part 422 overlap and abut together, and the first mounting hole 4121 communicates with the second mounting hole 4221.

[0029] In the embodiment illustrated in this utility model, the first bracket 41 and the second bracket 42 are identical, enabling the sharing of parts. The first fixing part 411 and the second fixing part 421 extend in opposite directions, and the first fixing part 411 and the second fixing part 421 are located in the same plane. In the embodiment illustrated in this utility model, there are two of each of the first mounting hole 4121 and the second mounting hole 4221. The first mounting hole 4121 and the second mounting hole 4221 are configured to mount the exhaust aftertreatment device 100 onto a vehicle body bracket (not shown).

[0030] Furthermore, in the embodiment illustrated in this utility model, the bracket assembly 4 further includes a fixing plate 43 fixed to the second end cover 3, a first mounting post 44 protruding from the fixing plate 43, and a second mounting post 45 protruding from the fixing plate 43, wherein the first mounting post 44 and the second mounting post 45 are arranged side by side. The fixing plate 43 is welded and fixed to the second end cover 3. The first mounting post 44 and the second mounting post 45 are configured to mount the exhaust aftertreatment device 100 onto the vehicle body bracket.

[0031] The exhaust gas aftertreatment device 100 includes a first cavity 101 located between the first end cover 2 and the first baffle 5, a second cavity 102 located between the first baffle 5 and the second baffle 6, and a third cavity 103 located between the second baffle 6 and the second end cover 3.

[0032] The exhaust gas aftertreatment device 100 includes an intake pipe 81 connected to the second cavity 102 and an outlet pipe 82 connected to the third cavity 103. The intake pipe 81 has a plurality of airflow perforations 811 penetrating its wall, and these perforations 811 are connected to the second cavity 102. The first baffle 5 has an opening 51 connecting the second cavity 102 and the first cavity 101. The second cavity 102 and the third cavity 103 are not directly connected due to the obstruction of the second baffle 6.

[0033] One end of the exhaust gas aftertreatment carrier assembly 7 is connected to the first cavity 101, and the other end of the exhaust gas aftertreatment carrier assembly 7 is connected to the third cavity 103.

[0034] The exhaust gas aftertreatment device 100 includes a reinforcing plate 91 fixed between the first end cover 2 and the first baffle 5. The reinforcing plate 91 divides the first cavity 101 into a first sub-cavity 1011 located on one side of the reinforcing plate 91 and a second sub-cavity 1012 located on the other side of the reinforcing plate 91. The first sub-cavity 1011 is connected to the opening 51. The reinforcing plate 91 is provided with a plurality of through holes 911 connecting the first sub-cavity 1011 and the second sub-cavity 1012.

[0035] The exhaust gas aftertreatment device 100 includes a plurality of reinforcing rods 92 fixed between the first baffle 5 and the second baffle 6.

[0036] To increase structural strength, the housing 1, the first end cap 2, the second end cap 3, and the second baffle 6 are all provided with outwardly protruding reinforcing protrusions 11. The reinforcing protrusions 11 strengthen the rigidity of the weak areas, thereby raising the frequency to above 300Hz and avoiding resonance.

[0037] The airflow direction of this utility model is as follows: exhaust gas flows in from the inlet pipe 81, then passes through the airflow perforation 811 into the second cavity 102, then the airflow passes through the opening 51 into the first sub-cavity 1011, then the airflow passes through the perforation 911 into the second sub-cavity 1012; subsequently, the airflow passes through the exhaust gas after-treatment carrier assembly 7 and enters the third cavity 103; finally, the airflow flows out of the exhaust gas after-treatment device 100 from the outlet pipe 82.

[0038] Compared to existing technologies, the bracket assembly 4 of this utility model includes an L-shaped first bracket 41 and an L-shaped second bracket 42. The first bracket 41 includes a first fixing part 411 and a first supporting part 412, with the first supporting part 412 having a first mounting hole 4121. The second bracket 42 includes a second fixing part 421 and a second supporting part 422, with the second supporting part 422 having a second mounting hole 4221. The first fixing part 411 and the second fixing part 421 are fixed to the second end cap 3. The first supporting part 412 overlaps with the second supporting part 422, and the first mounting hole 4121 communicates with the second mounting hole 4221. By setting the above bracket assembly 4, the structure of the exhaust gas aftertreatment device 100 of this utility model is simplified.

[0039] 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. A tail gas aftertreatment device, characterized in that, The device includes a housing, a first end cap fixed to one end of the housing, a second end cap fixed to the other end of the housing, and a bracket assembly fixed to and protruding from the second end cap. The bracket assembly includes an L-shaped first bracket and an L-shaped second bracket. The first bracket includes a first fixing part and a first supporting part, and the first supporting part has a first mounting hole. The second bracket includes a second fixing part and a second supporting part, and the second supporting part has a second mounting hole. The first fixing part and the second fixing part are fixed to the second end cap. The first supporting part and the second supporting part overlap, and the first mounting hole and the second mounting hole communicate with each other.

2. The exhaust gas aftertreatment device as described in claim 1, characterized in that: The first bracket is the same as the second bracket, so that parts can be shared.

3. The exhaust gas aftertreatment device as described in claim 1, characterized in that: The first fixing part and the second fixing part extend in opposite directions, and the first fixing part and the second fixing part are located in the same plane.

4. The exhaust gas aftertreatment device as described in claim 1, characterized in that: There are two of each of the first and second mounting holes.

5. The exhaust gas aftertreatment device as described in claim 1, characterized in that: The bracket assembly further includes a fixing plate fixed to the second end cap, a first mounting post protruding from the fixing plate, and a second mounting post protruding from the fixing plate, wherein the first mounting post and the second mounting post are arranged side by side.

6. The exhaust gas aftertreatment device as described in claim 1, characterized in that: The exhaust gas aftertreatment device further includes a first baffle, a second baffle disposed in the housing, and an exhaust gas aftertreatment carrier assembly mounted on the first baffle and the second baffle; The exhaust gas aftertreatment device includes a first cavity located between the first end cover and the first baffle, a second cavity located between the first baffle and the second baffle, and a third cavity located between the second baffle and the second end cover; The exhaust gas aftertreatment device includes an intake pipe connected to the second chamber and an exhaust pipe connected to the third chamber.

7. The exhaust gas aftertreatment device as described in claim 6, characterized in that: The air intake pipe is provided with a plurality of airflow perforations penetrating its wall, and the airflow perforations are connected to the second cavity; The first baffle has an opening that connects the second cavity and the first cavity; The second cavity and the third cavity are not directly connected due to the obstruction of the second baffle; One end of the exhaust gas aftertreatment carrier assembly is connected to the first cavity, and the other end of the exhaust gas aftertreatment carrier assembly is connected to the third cavity.

8. The exhaust gas aftertreatment device as described in claim 7, characterized in that: The exhaust gas aftertreatment device includes a reinforcing plate fixed between the first end cover and the first baffle. The reinforcing plate divides the first cavity into a first sub-cavity located on one side of the reinforcing plate and a second sub-cavity located on the other side of the reinforcing plate. The first sub-cavity is connected to the opening. The reinforcing plate is provided with a plurality of through holes connecting the first sub-cavity and the second sub-cavity.

9. The exhaust gas aftertreatment device as described in claim 7, characterized in that: The exhaust gas aftertreatment device includes a plurality of reinforcing rods fixed between the first baffle and the second baffle.

10. The exhaust gas aftertreatment device as described in claim 1, characterized in that: The housing, the first end cap, and the second end cap are all provided with outwardly raised reinforcing protrusions.

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