CN216518237U - Post-treatment exhaust pipe splicing sealing structure - Google Patents
Post-treatment exhaust pipe splicing sealing structure Download PDFInfo
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- CN216518237U CN216518237U CN202123133221.0U CN202123133221U CN216518237U CN 216518237 U CN216518237 U CN 216518237U CN 202123133221 U CN202123133221 U CN 202123133221U CN 216518237 U CN216518237 U CN 216518237U
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Abstract
The utility model discloses a splicing sealing structure of a post-treatment exhaust pipe, which comprises a post-treatment exhaust pipe front pipe section and a post-treatment exhaust pipe rear pipe section which are matched with each other; the first flange plate is fixedly sleeved on the outer wall of the air outlet end of the front pipe section of the post-treatment exhaust pipe; the second flange is fixedly sleeved on the outer wall of the air inlet end of the rear pipe section of the post-processing exhaust pipe, is in adaptive connection with the first flange through a plurality of groups of bolt assemblies uniformly distributed on the second flange, and is padded with a sealing gasket between the first flange and the second flange; one end of the connecting pipe is welded and fixed on the inner wall of the air outlet end of the front pipe section of the post-processing exhaust pipe, and the other end of the connecting pipe is inserted into the air inlet end of the rear pipe section of the post-processing exhaust pipe in a clearance mode. The utility model has the advantages that the defect that the connecting part is subjected to thermal deformation or hard fracture due to the influence of high temperature and vibration on the exhaust system for a long time can be effectively overcome, the risk of air leakage and oil leakage of the connecting part is greatly reduced, and the life safety of vehicles and drivers and passengers is ensured.
Description
Technical Field
The utility model relates to the technical field of automobile exhaust, in particular to a plug-in sealing structure of a post-treatment exhaust pipe.
Background
At present, the connection between each pipeline of an automobile exhaust system is mostly direct welding or flange connection, and because the exhaust system is influenced by high temperature and vibration for a long time in the long-time use process of a vehicle, the connection part is easily subjected to thermal deformation or hard fracture, and risks such as air leakage and oil leakage are generated.
Disclosure of Invention
The utility model aims to provide a splicing sealing structure of a post-treatment exhaust pipe.
In order to achieve the purpose, the utility model can adopt the following technical scheme:
the utility model relates to a splicing sealing structure of a post-treatment exhaust pipe, which comprises a post-treatment exhaust pipe front pipe section and a post-treatment exhaust pipe rear pipe section which are matched with each other; further comprising:
the first flange is fixedly sleeved on the outer wall of the air outlet end of the front pipe section of the post-treatment exhaust pipe;
the second flange plate is fixedly sleeved on the outer wall of the air inlet end of the rear pipe section of the post-processing exhaust pipe, wherein the second flange plate is in adaptive connection with the first flange plate through a plurality of groups of bolt assemblies uniformly distributed on the second flange plate, and a sealing gasket is arranged between the first flange plate and the second flange plate in a cushioning manner;
and one end of the connecting pipe is welded and fixed on the inner wall of the air outlet end of the front pipe section of the post-treatment exhaust pipe, and the other end of the connecting pipe is inserted into the air inlet end of the rear pipe section of the post-treatment exhaust pipe in a clearance manner.
Furthermore, the first flange plate and the second flange plate are spherical flanges matched with each other.
Further, the sealing washer is a spherical sealing washer matched with the spherical flange.
Furthermore, each group of bolt assemblies are sleeved with a jacking spring supported on the outer side surface of the second flange plate.
The utility model has the advantages of simple structure and simple and convenient installation. The front pipe section and the rear pipe section of the post-processing exhaust pipe are connected through the spherical flanges which are matched with each other, and meanwhile, the front pipe section of the post-processing exhaust pipe is fixedly connected with a connecting pipe which is inserted into the rear pipe section of the post-processing exhaust pipe in a clearance mode in a welding mode, so that the defect that a connecting part of an exhaust system is subjected to thermal deformation or hard fracture due to the fact that the exhaust system is influenced by high temperature and vibration for a long time can be effectively overcome, the risk of air leakage and oil leakage of the connecting part is reduced to a great extent, and the life safety of vehicles and drivers and passengers is ensured.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is an exploded isometric view of fig. 1.
Fig. 3 is a sectional view taken along line a-a in fig. 1.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
As shown in fig. 1-3, the plugging sealing structure for the post-treatment exhaust pipe comprises a post-treatment exhaust pipe front pipe section 1 and a post-treatment exhaust pipe rear pipe section 2 which are arranged in an automobile exhaust system and matched with each other, wherein a first flange 3 is arranged on the outer wall of the air outlet end of the post-treatment exhaust pipe front pipe section 1, and a second flange 4 is arranged on the outer wall of the air inlet end of the post-treatment exhaust pipe rear pipe section 2, wherein the second flange 4 is in adaptive connection with the first flange 3 through a plurality of groups of bolt assemblies 5 uniformly distributed on the second flange 4, and a sealing gasket 6 is arranged between the first flange 3 and the second flange 4; in addition, the first flange 3 and the second flange 4 should be spherical flanges matched with each other (i.e. the first flange 3 and the second flange 4 should be a pair of flange plates of the spherical flanges), and the sealing washer 6 should be a spherical sealing washer matched with the spherical flanges.
In order to overcome the problem that the connecting part of the front pipe section 1 of the aftertreatment exhaust pipe and the rear pipe section 2 of the aftertreatment exhaust pipe is subjected to thermal deformation or hard fracture due to long-term high temperature and vibration, a connecting pipe 7 is fixedly welded on the inner wall of the air outlet end of the front pipe section 1 of the aftertreatment exhaust pipe, and the other end of the connecting pipe 7 opposite to the welding end is inserted into the air inlet end of the rear pipe section 2 of the aftertreatment exhaust pipe in a clearance mode, so that when the front pipe section 1 of the aftertreatment exhaust pipe and the rear pipe section 2 of the aftertreatment exhaust pipe are subjected to thermal deformation or vibration deformation, the deformation can be overcome through the clearance between the connecting pipe 7 and the rear pipe section 2 of the aftertreatment exhaust pipe, and the risk of air leakage and oil leakage at the connecting part of the front pipe section 1 of the aftertreatment exhaust pipe and the rear pipe section 2 of the aftertreatment exhaust pipe is reduced to the greatest extent.
In addition, in order to avoid generating a gap between the first flange plate 3 and the second flange plate 4 due to the deformation of the connecting part of the front pipe section 1 of the aftertreatment exhaust pipe and the rear pipe section 2 of the aftertreatment exhaust pipe as much as possible, each group of bolt assemblies 5 is sleeved with a jacking spring 8 which props against the outer side surface of the second flange plate 4, the jacking springs 8 not only can improve the sealing performance of the mutual attachment of the first flange plate 3 and the second flange plate 4, but also can ensure that the second flange plate 4 can be always tightly pressed with the first flange plate 3 even if the connecting part of the front pipe section 1 of the aftertreatment exhaust pipe and the rear pipe section 2 of the aftertreatment exhaust pipe is deformed, and the sealing performance of the connection of the first flange plate 3 and the second flange plate 4 is ensured to the maximum extent.
Claims (4)
1. A post-treatment exhaust pipe splicing sealing structure comprises a post-treatment exhaust pipe front pipe section and a post-treatment exhaust pipe rear pipe section which are matched with each other; the method is characterized in that: also comprises
The first flange is fixedly sleeved on the outer wall of the air outlet end of the front pipe section of the post-treatment exhaust pipe;
the second flange plate is fixedly sleeved on the outer wall of the air inlet end of the rear pipe section of the post-processing exhaust pipe, wherein the second flange plate is in adaptive connection with the first flange plate through a plurality of groups of bolt assemblies uniformly distributed on the second flange plate, and a sealing gasket is arranged between the first flange plate and the second flange plate in a cushioning manner;
and one end of the connecting pipe is welded and fixed on the inner wall of the air outlet end of the front pipe section of the post-treatment exhaust pipe, and the other end of the connecting pipe is inserted into the air inlet end of the rear pipe section of the post-treatment exhaust pipe in a clearance manner.
2. The aftertreatment exhaust pipe plugging sealing structure of claim 1, wherein: the first flange plate and the second flange plate are spherical flanges matched with each other.
3. The aftertreatment exhaust pipe plugging sealing structure of claim 2, wherein: the sealing washer is a spherical sealing washer matched with the spherical flange.
4. The aftertreatment exhaust pipe plugging sealing structure of claim 1, wherein: and each group of bolt assemblies is sleeved with a jacking spring supported on the outer side surface of the second flange plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123133221.0U CN216518237U (en) | 2021-12-14 | 2021-12-14 | Post-treatment exhaust pipe splicing sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123133221.0U CN216518237U (en) | 2021-12-14 | 2021-12-14 | Post-treatment exhaust pipe splicing sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216518237U true CN216518237U (en) | 2022-05-13 |
Family
ID=81497981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123133221.0U Active CN216518237U (en) | 2021-12-14 | 2021-12-14 | Post-treatment exhaust pipe splicing sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216518237U (en) |
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2021
- 2021-12-14 CN CN202123133221.0U patent/CN216518237U/en active Active
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