Adapter and flame arrester

Abstract

The utility model relates to a crossover coupling for connecting an automobile exhaust pipe and a flame arrester body and a flame arrester comprising the crossover coupling. The adapter comprises a connecting sleeve and a conical part connected with one end of the connecting sleeve. The inner diameter of the conical part is gradually increased in the direction away from the connecting sleeve, and the end, with the larger inner diameter, of the conical part is used for being connected with the automobile exhaust pipe. The adapter can be suitable for automobile exhaust pipes with different pipe diameters, is convenient to mount and dismount, can enable the automobile exhaust pipes and the flame arrester body to be connected and fastened and can be repeatedly used, meanwhile, can guarantee efficient and stable operation of the flame arrester, and meets the use requirements of different types of vehicles.

Description

Technical Field

[0001] This application relates to the field of mechanical structures, and more particularly to a conversion joint for connecting an automobile exhaust pipe and a flame arrester body, and a flame arrester including the conversion joint. Background Technology

[0002] With the booming development of the automotive industry, safety and environmental issues related to vehicle exhaust emissions are receiving increasing attention. As a key component ensuring the safety of the exhaust emission system, the performance of flame arresters used in automotive exhaust pipes directly affects the stability and safety of vehicle operation. In existing technologies, traditional flame arresters for automotive exhaust pipes cannot be flexibly adjusted to achieve a tight and secure connection, greatly limiting their versatility across various vehicle types and failing to efficiently adapt to the configuration requirements of different manufacturers for different types of vehicles. Furthermore, if the connection is not secure, the flame arrester risks detaching during vehicle operation, seriously threatening driving safety. Therefore, a new type of automotive exhaust pipe flame arrester is needed, applicable to exhaust pipes of different diameters, to meet the needs of various manufacturers.

[0003] Furthermore, the existing connection methods between flame arresters and exhaust pipes are relatively simple and fixed. Common connection methods often lack the ability to adapt to different pipe diameters, making the installation process cumbersome. In some cases, installation may not be possible if the pipe diameter is incompatible, seriously affecting the versatility and efficiency of the flame arrester.

[0004] In summary, existing flame arresters for automotive exhaust pipes suffer from poor adaptability and inflexible connection methods, failing to adequately meet the diverse needs of enterprises. There is an urgent need for a new type of flame arrester that can be adapted to exhaust pipes of different diameters and is easy to install. This utility model was developed against this background, aiming to solve the aforementioned problems in the existing technology and improve the versatility and practicality of flame arresters. Utility Model Content

[0005] This application provides a conversion connector for automotive exhaust pipe flame arresters, including a connecting sleeve and a tapered portion, to solve the problems existing in the conversion connectors of current automotive exhaust pipe flame arresters in terms of compatibility, sealing, stability and durability.

[0006] According to one aspect of this application, a conversion connector for connecting an automobile exhaust pipe and a flame arrester body is provided, comprising a connecting sleeve and a tapered portion connected to one end of the connecting sleeve;

[0007] The tapered portion gradually increases in inner diameter along the direction away from the connecting sleeve, and the end of the tapered portion with a larger inner diameter is used to connect to the vehicle exhaust pipe.

[0008] According to one embodiment, the tapered portion has a fixed end connected to the connecting sleeve and a retractable member extending from the fixed end, and a tightening groove is formed in the retractable member.

[0009] According to one embodiment, the inner wall surface of the tapered portion has one or both of a plurality of protrusion structures and a first thread structure.

[0010] According to one embodiment, the adapter further includes a fastening nut having a tapered inner cavity that matches the shape of the tapered portion for fastening the tapered portion to the vehicle exhaust pipe.

[0011] According to one embodiment, the outer surface of the tapered portion has a second thread for aligning with the threads of the fastening nut.

[0012] According to one embodiment, the connecting sleeve has a plurality of interconnected grooves inside, and the diameter of the plurality of grooves decreases sequentially along the axial direction away from the vehicle exhaust pipe.

[0013] According to one embodiment, the tightening groove is connected to a plurality of the pipe grooves respectively, so that the adapter can close each of the pipe grooves and fasten it to the vehicle exhaust pipe.

[0014] According to one embodiment, a sealing ring is provided at the end of the fastening nut near the end of the vehicle exhaust pipe.

[0015] According to one embodiment, the adapter further includes a clamp disposed around the connecting sleeve, the clamp being able to act on the connecting sleeve to secure the adapter to the flame arrester body.

[0016] According to one embodiment, the material of the adapter is polytetrafluoroethylene.

[0017] According to one embodiment, the connecting sleeve has a cylindrical shape.

[0018] According to another aspect of this application, a flame arrester is provided, including a flame arrester body and the aforementioned adapter.

[0019] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0020] (1) The flame arrester of this utility model for automobile exhaust pipes has a reasonable structure of conversion joint, which makes the conversion joint suitable for automobile exhaust pipes of different diameters. It effectively solves the connection and compatibility problem of the flame arrester caused by the difference in pipe diameter of exhaust pipes of different models, and thus makes the flame arrester suitable for installation in different types of vehicles, meeting the different usage needs of enterprises.

[0021] (2) The flame arrester of this utility model applicable to automobile exhaust pipe can be connected to the exhaust pipe by manually turning the fastening screw without the use of tools, which greatly facilitates operation and improves work efficiency.

[0022] (3) The components of the conversion connector for automobile exhaust pipes of this utility model are closely matched and the tightness of the connection is increased, ensuring that it will not loosen or fall off during vehicle operation, effectively ensuring the stable operation of the automobile exhaust treatment system and improving the safety and reliability of automobile operation.

[0023] (4) The conversion connector of this utility model for automobile exhaust pipe can be easily disassembled after use and can be reused multiple times, reducing the cost of use. Attached Figure Description

[0024] Figure 1 This is a longitudinal cross-sectional structural diagram of the adapter of this utility model when used to connect a car exhaust pipe and a flame arrester.

[0025] Figure 2 This is a longitudinal cross-sectional view of the adapter of this utility model.

[0026] Figure 3 This is a longitudinal cross-sectional structural diagram of the clamping adapter of this utility model.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Flame arrester body; 2. Fastening nut; 3. Connecting sleeve; 4. Conical part; 5. Pipe groove; 6. Tightening groove; 7. Clamp; 8. Automobile exhaust pipe; 9. Protruding structure; 10. Retractable component; 11. Fixed end. Detailed Implementation

[0029] The technical solution of this utility model will now be clearly and completely described in conjunction with the accompanying drawings.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0031] like Figures 1 to 3As shown, this utility model provides a conversion connector for connecting an automobile exhaust pipe 8 and a flame arrester body 1, including a connecting sleeve 3 and a tapered portion 4. This conversion connector detachably connects the automobile exhaust pipe 8 and the flame arrester body 1 to provide a flame arresting effect on the exhaust gas discharged from the automobile exhaust pipe 8. The material of the conversion connector can be polytetrafluoroethylene (PTFE), which can withstand temperatures up to 300°C, while the temperature at the automobile exhaust pipe typically does not exceed 150°C. Therefore, this material meets the usage requirements of the connection components of the flame arrester.

[0032] Specifically, one end of the connecting sleeve 3 is used to connect to the flame arrester body 1, and the other end is used to connect to the tapered portion 4. Furthermore, the inner diameter of the tapered portion 4 gradually increases in the direction away from the connecting sleeve 3, and the end of the tapered portion 4 with the larger inner diameter is used to connect to the vehicle exhaust pipe 8.

[0033] The flame arrester body 1 and the connecting sleeve 3 of the adapter can be connected in various ways. A common method is a threaded connection, where an external thread is provided at the connecting end of the flame arrester body 1, and an internal thread is provided at the corresponding position on the connecting sleeve. A secure connection can be achieved by manually rotating and tightening. Alternatively, a snap-fit ​​connection can be used, where a snap-fit ​​structure is provided at the connecting end of the flame arrester body, and a corresponding slot is provided on the connecting sleeve. During installation, the snap-fit ​​is simply inserted into the slot. Through these connection methods, the flame arrester body 1 can be detachably installed on the vehicle's exhaust pipe 8 via the adapter, allowing the vehicle's exhaust pipe 8 to connect with the flame arrester body 1.

[0034] The tapered portion 4 has a fixed end 11 connected to the connecting sleeve 3 and a retractable member 10 extending from the fixed end 11, and a tightening groove 6 is formed in the retractable member 10.

[0035] On one hand, the inner wall surface of the tapered portion 4 has multiple raised structures 9. These raised structures 9 have good elasticity and self-adaptability, enabling them to better fit the outer wall of automotive exhaust pipes of different diameters. During installation, when external force is applied by tightening the nut 2 or when adapting to automotive exhaust pipes of different diameters, these raised structures can deform appropriately according to the actual stress and the outer contour of the automotive exhaust pipe, thereby better fitting the automotive exhaust pipe and further enhancing the tightness and fit between the adapter and the automotive exhaust pipe. The threads on the outer surface of the tapered portion 4 are used, on the one hand, for precise engagement with the threads of the tightening nut 2 to achieve a stable connection and fastening; on the other hand, they also provide a connection basis for possible subsequent auxiliary fixing measures or connections with other related components. For example, when further enhancing connection stability is required, additional connectors can be used to engage with these threads.

[0036] According to one embodiment, these protrusions 9 can be uniformly distributed in size along the circumference. This distribution ensures that the adapter is subjected to uniform force in all directions when in contact with the vehicle exhaust pipe, better adapting to the outer wall shape of exhaust pipes of different diameters. According to another embodiment, these protrusions 9 can also be distributed in sections according to different pipe diameter ranges, and the size of the protrusions 9 can also vary with the pipe diameter. For example, in the section with a larger inner diameter of the conical part, relatively large and fewer protrusions 9 are uniformly arranged along the circumference, while in the section with a smaller inner diameter of the conical part, relatively small and more numerous protrusions 9 are uniformly arranged along the circumference, to more accurately adapt to vehicle exhaust pipes of different diameters.

[0037] In one specific embodiment, the inner wall of the tapered portion 4 of the adapter is provided with both a raised structure and a first thread (e.g., annular thread) to increase its friction with the vehicle exhaust pipe 8. The outer surface of the tapered portion 4 is provided with a thread that matches the fastening nut 2, and the threads of the fastening nut 2 are consistent, so that it can be manually tightened or loosened.

[0038] The connecting sleeve 3 has multiple interconnected slots 5 inside, and the diameter of these slots 5 decreases sequentially along the axial direction away from the vehicle's exhaust pipe. Furthermore, the tightening grooves 6 are connected to these slots 5 respectively, allowing the adapter to close each slot 5 and secure it to the vehicle's exhaust pipe 8. During installation, the slots 5 are closed according to the diameter of the vehicle's exhaust pipe 8 to adapt the adapter to that diameter. During vehicle operation, the adapter maintains a tight connection with the vehicle's exhaust pipe 8, ensuring that exhaust gases can smoothly enter the flame arrester for treatment.

[0039] According to one specific embodiment, the aforementioned adapter may further include a fastening nut 2, which may have a tapered inner cavity matching the shape of the tapered portion 4 for fastening the tapered portion 4 to the vehicle exhaust pipe 8. Specifically, the outer surface of the tapered portion 4 may have a second thread to match the threads of the fastening nut 2. Furthermore, a sealing ring is provided at the end of the fastening nut 2 near the vehicle exhaust pipe 8 to prevent exhaust gas leakage. The fastening nut 2 can be manually tightened or loosened to achieve fastening and loosening with the adapter.

[0040] According to another specific embodiment, the aforementioned adapter may further include a clamp 7 surrounding the connecting sleeve 3, which acts on the connecting sleeve 3 to secure it to the flame arrester body. In this case, the connecting sleeve 3 preferably has a cylindrical shape to facilitate the clamp 7 effectively gripping the outer wall of the connecting sleeve 3. When the flame arrester of this application is in operation, the clamp 7 drives the fastening of the adapter to the vehicle's exhaust pipe. When the clamp 7 acts on the adapter, its tightness can be adjusted using bolts or other fastening devices.

[0041] The technical solution of this application achieves multiple fastening and clamping effects on the vehicle exhaust pipe through the gradually changing inner diameter of the conversion joint, the protruding structure on the inner wall of the conical part, the tightening groove structure inside the conical part, and the external fastening nut structure, thereby increasing the friction between the conversion joint and the vehicle exhaust pipe and ensuring that it is not easy to fall off during vehicle operation; on the other hand, the clamp structure makes the connection between the conversion joint and the flame arrester body more secure.

[0042] It is understandable that when the flame arrester body is installed on the vehicle exhaust pipe 8 through the adapter, the different pipe grooves 5 on the adapter can be selected to match the diameter of the vehicle exhaust pipe 8, so that the flame arrester can be used for vehicle exhaust pipes 8 with different diameters through the adapter, that is, the flame arrester can be used for different types of vehicles.

[0043] Specifically, the diameter of the adapter's pipe opening is 40mm to 80mm and / or 80mm to 100mm, which covers a wide range of exhaust pipe diameters corresponding to various car types, effectively solving the connection and compatibility problem caused by differences in exhaust pipe diameters among different car models.

[0044] According to another aspect of this application, a flame arrester is provided, comprising a flame arrester body 1 and the aforementioned adapter.

[0045] It should be noted that the above-mentioned flame arrester body is a conventional flame arrester structure currently on the market, and its structural composition and working principle are the same as those of conventional flame arresters, so it will not be elaborated here.

[0046] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described.

Claims

1. A swivel joint for connecting an automobile exhaust pipe and a flame arrester body, characterized by, The connecting sleeve and the tapering portion are connected together. The tapering portion has a gradually increasing inner diameter in a direction away from the connecting sleeve, and the end of the tapering portion with the larger inner diameter is used to connect with the automobile exhaust pipe. The tapering portion has a fixed end connected with the connecting sleeve and a retractable member extending from the fixed end, and the retractable member has a tightening groove formed therein.

2. The swivel joint for connecting the automobile exhaust pipe and the body of the flame arrester according to claim 1, characterized in that, The inner wall surface of the tapering portion has one or both of a plurality of protruding structures and a first threaded structure.

3. The adapter for connecting an automobile exhaust pipe and a flame arrester body according to claim 1, wherein A fastening nut is further included for fastening the tapering portion with the automobile exhaust pipe, and the fastening nut has a tapering inner cavity matching the outer shape of the tapering portion.

4. The adapter for connecting an automobile exhaust pipe and a flame arrester body according to claim 3, wherein The outer surface of the tapering portion has a second thread for matching the screw thread of the fastening nut.

5. The adapter for connecting an automobile exhaust pipe and a flame arrester body according to claim 1, wherein The connecting sleeve has a plurality of tube grooves sequentially connected with each other, and the hole diameter of the plurality of tube grooves sequentially decreases in an axial direction away from the automobile exhaust pipe.

6. The swivel joint for connecting a vehicle exhaust pipe and a de¬ flector body according to claim 5, characterized in that The tightening groove is respectively communicated with the plurality of tube grooves, so that the adapter can fold each of the tube grooves and fasten on the automobile exhaust pipe.

7. The adapter for connecting an automobile exhaust pipe and a flame arrester body according to claim 3, wherein The end of the fastening nut close to the automobile exhaust pipe is provided with a sealing ring.

8. The adapter for connecting an automobile exhaust pipe and a flame arrester body according to claim 1, wherein A hoop is further included and arranged around the connecting sleeve, and the hoop can act on the connecting sleeve to fasten the adapter on the flame arrester body.

9. The adapter for connecting an automobile exhaust pipe and a de- flamer body according to claim 1, wherein The adapter is made of polytetrafluoroethylene.

10. The adapter for connecting an automobile exhaust pipe and a flame arrester body according to claim 1, wherein The connecting sleeve has a cylindrical shape.

11. A flame arrestor characterized by, The adapter is arranged on the flame arrester body. The adapter is arranged on the flame arrester body.

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