Tail gas after-treatment device

Abstract

A tail gas after-treatment device comprises a gas inlet assembly, a tail gas after-treatment assembly, a mounting shell, a mounting ring and at least one fixing element. The air inlet assembly comprises an air inlet shell. The tail gas after-treatment assembly comprises an outer shell and a tail gas after-treatment carrier packaged in the outer shell, and the gas inlet shell is connected with the outer shell. The installation shell comprises a cylinder part fixed to the air inlet shell and a flanging part extending from the cylinder part, and an installation through hole is formed in the flanging part. The mounting ring is connected to the cylinder part in a sleeving mode and comprises a first mounting hole. The fixing element penetrates through the first mounting hole and the mounting through hole so as to fix the mounting ring and the flanging part on a vehicle body bracket, and the mounting ring abuts against the flanging part. By means of the arrangement, the reliability of the tail gas after-treatment device when the tail gas after-treatment device is installed on the vehicle body support is improved.

Description

Technical Field

[0001] The utility model relates to an exhaust gas after-treatment device, belonging to the technical field of engine exhaust gas after-treatment. Background Art

[0002] Exhaust aftertreatment devices in related art typically include an intake assembly, an exhaust aftertreatment assembly, an intake assembly, and a mounting bracket assembly. The intake assembly includes an intake end cap and an intake pipe, the exhaust aftertreatment assembly includes a housing and an exhaust aftertreatment carrier encapsulated within the housing, and the intake assembly includes an outlet end cap and an outlet pipe. The intake pipe and outlet pipe are respectively fixed to the intake end cap and the outlet end cap.

[0003] There is still room for improvement in the mounting bracket assembly in the related art. Utility Model Content

[0004] The purpose of the utility model is to provide an exhaust gas post-processing device with high installation reliability.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an exhaust gas post-processing device, comprising:

[0006] An air intake assembly, the air intake assembly comprising an air intake housing;

[0007] An exhaust gas after-treatment component, the exhaust gas after-treatment component comprising an outer shell and an exhaust gas after-treatment carrier encapsulated in the outer shell, the air intake housing being connected to the outer shell;

[0008] A mounting housing, the mounting housing comprising a cylindrical portion fixed to the air intake housing and a flange portion extending from the cylindrical portion, the flange portion being provided with a mounting through-hole;

[0009] A mounting ring, the mounting ring being sleeved on the cylindrical portion, the mounting ring comprising a first mounting hole; and

[0010] At least one fixing element passes through the first mounting hole and the mounting through-hole to fix the mounting ring and the flange portion on the vehicle body bracket, wherein the mounting ring abuts against the flange portion.

[0011] As a further improved technical solution of the present invention, the flange portion is conical, comprising a first conical inner surface and a first conical outer surface, wherein the first mounting hole passes through the first conical inner surface and the first conical outer surface.

[0012] As a further improved technical solution of the present invention, the mounting ring includes a second conical inner surface, and the second conical inner surface abuts against the first conical outer surface.

[0013] As a further improved technical solution of the present invention, the second conical inner surface is adapted to the first conical outer surface.

[0014] As a further improved technical solution of the present invention, the mounting ring is provided with a receiving space, the second conical inner surface is exposed in the receiving space, and the flange portion is received in the receiving space.

[0015] As a further improved technical solution of the present invention, the mounting ring includes a second side wall surface opposite to the second conical inner surface, wherein the first mounting hole passes through the second side wall surface and the second conical inner surface.

[0016] As a further improved technical solution of the present invention, the size of the mounting through-hole is larger than the size of the first mounting hole.

[0017] As a further improved technical solution of the present invention, the vehicle body bracket includes a mounting seat, the mounting seat is provided with a third conical outer surface, and the first conical inner surface abuts against the third conical outer surface.

[0018] As a further improved technical solution of the present invention, the mounting seat is provided with a second mounting hole penetrating the third conical outer surface, and the fixing element passes through the second mounting hole.

[0019] As a further improved technical solution of the present invention, the mounting seat includes a fixing plate and a conical portion connected to the fixing plate, the third conical outer surface is arranged on the conical portion; the fixing plate has a third mounting hole, and the fixing element passes through the third mounting hole; the mounting seat is accommodated in the accommodation space.

[0020] Compared to the prior art, the exhaust gas aftertreatment device of the present invention includes a mounting housing, a mounting ring, and at least one fixing element. The mounting housing includes a cylindrical portion fixed to the intake housing and a flange portion extending from the cylindrical portion, the flange portion being provided with a mounting through-hole. The mounting ring is sleeved onto the cylindrical portion and includes a first mounting hole. The fixing element passes through the first mounting hole and the mounting through-hole to secure the mounting ring and the flange portion to the vehicle body bracket, with the mounting ring abutting the flange portion. This arrangement improves the reliability of the exhaust gas aftertreatment device when mounted on the vehicle body bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional schematic diagram of an exhaust gas after-treatment device of the present invention in one embodiment.

[0022] Figure 2 yes Figure 1A three-dimensional diagram from another angle.

[0023] Figure 3 yes Figure 1 main view.

[0024] Figure 4 yes Figure 1 Right view of .

[0025] Figure 5 yes Figure 2 Partial exploded view of the .

[0026] Figure 6 yes Figure 1 Partial exploded view of the . DETAILED DESCRIPTION

[0027] The following will describe the specific embodiments of the present invention in detail with reference to the accompanying drawings. If there are several specific embodiments, the features of these embodiments can be combined with each other without conflict. When the description refers to the drawings, unless otherwise specified, the same numbers or symbols in different drawings represent the same or similar elements. The contents described in the following exemplary embodiments do not represent all embodiments of the present invention. On the contrary, they are only examples of products that are consistent with the present invention and are described in the claims of the present invention.

[0028] The terms used in this utility model are for the purpose of describing specific embodiments only and are not intended to limit the scope of protection of this utility model. It should be understood that the terms "first", "second" and similar terms used in the specification and claims of this utility model do not indicate any order, quantity or importance, but are merely used to distinguish features.

[0029] Please refer to Figures 1 to 6 As shown, the present invention discloses an exhaust gas aftertreatment device, which includes an end cap assembly 10, an exhaust gas aftertreatment assembly 20 connected to the end cap assembly 10, an air intake assembly 30 connected to the exhaust gas aftertreatment assembly 20, and a mounting bracket assembly 40. The end cap assembly 10 includes an end cap 11 and an exhaust pipe 12 at least partially inserted into the end cap 11. In the illustrated embodiment of the present invention, the exhaust pipe 12 is an exhaust pipe.

[0030] The exhaust gas after-treatment component 20 includes an outer shell 21 and an exhaust gas after-treatment carrier 22 encapsulated in the outer shell 21 . One end of the outer shell 21 is connected to the end cover 11 , and the other end of the outer shell 21 is connected to the air intake component 30 .

[0031] The air intake assembly 30 includes an air intake housing 31 and an air intake pipe 32 fixed to the air intake housing 31. The air intake housing 31 is connected to the outer shell 21. In one embodiment of the present invention, the air intake housing 31 is welded to the outer shell 21. Of course, in another embodiment of the present invention, the air intake housing 31 and the outer shell 21 can be a single integral housing.

[0032] The mounting bracket assembly 40 includes a mounting housing 41 , a mounting ring 42 , and at least one fixing element 43 .

[0033] The mounting housing 41 includes a cylindrical portion 411 fixed to the air intake housing 31 and a flange portion 412 extending from the cylindrical portion 411. In the illustrated embodiment of the present invention, the cylindrical portion 411 is welded to the air intake housing 31. The flange portion 412 is integrally extended from the cylindrical portion 411. The flange portion 412 is conical and includes a first conical inner surface 4121, a first conical outer surface 4122, and a plurality of mounting through-holes 4123 extending through the first conical inner surface 4121 and the first conical outer surface 4122.

[0034] The mounting ring 42 is sleeved onto the cylindrical portion 411 before the cylindrical portion 411 is secured to the intake housing 31. The mounting ring 42 is annular and includes a second tapered inner surface 421, a second sidewall 422 opposite the second tapered inner surface 421, a receiving space 423, and a plurality of first mounting holes 424 extending through the second sidewall 422 and the second tapered inner surface 421. In the illustrated embodiment of the present invention, the second sidewall 422 is a vertical surface to facilitate engagement with the fixing element 43. The second tapered inner surface 421 is exposed within the receiving space 423.

[0035] The exhaust gas after-treatment device is connected to the vehicle body bracket. The vehicle body bracket includes a mounting base 5, which includes a fixing plate 51 and a tapered portion 52 connected to the fixing plate 51. The tapered portion 52 has a third tapered outer surface 521 and a plurality of second mounting holes 522 extending through the third tapered outer surface 521. The fixing plate 51 includes a plurality of third mounting holes 511.

[0036] During installation, the flange portion 412 and the mounting seat 5 are both accommodated in the accommodating space 423. The second conical inner surface 421 abuts the first conical outer surface 4122, and the first conical inner surface 4121 abuts the third conical outer surface 521. In the illustrated embodiment of the present invention, the second conical inner surface 421 is adapted to the first conical outer surface 4122, and the first conical inner surface 4121 is adapted to the third conical outer surface 521. The size of the mounting through-hole 4123 is larger than the size of the first mounting hole 424, larger than the size of the second mounting hole 522, and larger than the size of the third mounting hole 511, so that the fixing element 43 can smoothly pass through the mounting through-hole 4123.

[0037] In the illustrated embodiment of the present invention, there are multiple fixing elements 43. The fixing elements 43 include, but are not limited to, screws. The fixing elements 43 sequentially pass through the first mounting hole 424, the mounting through-hole 4123, the second mounting hole 522, and the third mounting hole 511, and are fixed to the vehicle body bracket.

[0038] Compared to the prior art, the exhaust gas aftertreatment device of the present invention includes a mounting housing 41, a mounting ring 42, and at least one fixing element 43. The mounting housing 41 includes a cylindrical portion 411 fixed to the intake housing 31 and a flange portion 412 extending from the cylindrical portion 411, the flange portion 412 having a mounting through-hole 4123. The mounting ring 42 is sleeved onto the cylindrical portion 411 and includes a first mounting hole 424. The fixing element 43 passes through the first mounting hole 424 and the mounting through-hole 4123 to secure the mounting ring 42 and the flange portion 412 to the vehicle body bracket, with the mounting ring 42 abutting the flange portion 412. This arrangement improves the reliability of the exhaust gas aftertreatment device when mounted on the vehicle body bracket.

[0039] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. The understanding of this specification should be based on technical personnel in the relevant technical field. Although this specification has described the present invention in detail with reference to the above embodiments, ordinary technical personnel in the field should understand that technical personnel in the relevant technical field can still modify or replace the present invention with equivalents, and all technical solutions and improvements that do not depart from the spirit and scope of the present invention should be covered by the scope of the claims of the present invention.

Claims

1. An exhaust gas post-treatment device, characterized in that: include: An air intake assembly, the air intake assembly comprising an air intake housing; An exhaust gas after-treatment component, the exhaust gas after-treatment component comprising an outer shell and an exhaust gas after-treatment carrier encapsulated in the outer shell, the air intake housing being connected to the outer shell; A mounting housing, the mounting housing comprising a cylindrical portion fixed to the air intake housing and a flange portion extending from the cylindrical portion, the flange portion being provided with a mounting through-hole; A mounting ring, the mounting ring being sleeved on the cylindrical portion, the mounting ring comprising a first mounting hole; and At least one fixing element passes through the first mounting hole and the mounting through-hole to fix the mounting ring and the flange portion on the vehicle body bracket, wherein the mounting ring abuts against the flange portion.

2. The exhaust gas post-treatment device according to claim 1, characterized in that: The flange portion is conical and includes a first conical inner surface and a first conical outer surface, wherein the first mounting hole passes through the first conical inner surface and the first conical outer surface.

3. The exhaust gas post-treatment device according to claim 2, characterized in that: The mounting ring includes a second tapered inner surface abutting the first tapered outer surface.

4. The exhaust gas post-treatment device according to claim 3, characterized in that: The second tapered inner surface is adapted to the first tapered outer surface.

5. The exhaust gas post-treatment device according to claim 3, characterized in that: The mounting ring is provided with a receiving space, the second conical inner surface is exposed in the receiving space, and the flange portion is received in the receiving space.

6. The exhaust gas after-treatment device according to claim 3, characterized in that: The mounting ring includes a second side wall surface opposite to the second tapered inner surface, wherein the first mounting hole passes through the second side wall surface and the second tapered inner surface.

7. The exhaust gas post-treatment device according to claim 1, characterized in that: The size of the mounting through-hole is larger than that of the first mounting hole.

8. The exhaust gas post-treatment device according to claim 5, characterized in that: The vehicle body bracket includes a mounting seat, the mounting seat is provided with a third tapered outer surface, and the first tapered inner surface abuts against the third tapered outer surface.

9. The exhaust gas post-treatment device according to claim 8, characterized in that: The mounting seat is provided with a second mounting hole penetrating the third tapered outer surface, and the fixing element passes through the second mounting hole.

10. The exhaust gas post-treatment device according to claim 9, characterized in that: The mounting seat includes a fixing plate and a conical portion connected to the fixing plate, the third conical outer surface is provided on the conical portion; the fixing plate has a third mounting hole, and the fixing element passes through the third mounting hole; the mounting seat is accommodated in the accommodation space.

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