A muffler filter adapter connection mechanism
By using the socket design of the plug plate and the sleeve ring, as well as the positioning structure of the limiting plate and the cylindrical plug rod, the problem of the muffler filter pipe connection mechanism shifting under shaking is solved, realizing fast and accurate connection and convenient maintenance, and improving the stability and service life of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIANGXIANG GUANGYUAN MASCH CO LTD
- Filing Date
- 2025-09-30
- Publication Date
- 2026-08-04
AI Technical Summary
The existing muffler filter pipe connection mechanism is prone to shifting under prolonged shaking, affecting its accuracy and making maintenance inconvenient, thus increasing its service life.
It adopts a socket design with a plug plate and a sleeve ring, combined with a positioning structure of a limiting plate and a cylindrical plug rod. It prevents rotation and axial displacement through limiting openings and snap-fit, and uses a 360° surrounding positioning strip to enhance stability. At the same time, the combination design of fixing block, nut and threaded rod realizes an adjustable connection method.
It enables rapid and precise connection between pipes, preventing loosening or displacement, improving installation convenience and structural stability, facilitating maintenance and repair, and extending equipment lifespan.
Smart Images

Figure CN224592219U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of muffler connection technology, specifically a muffler filter connection mechanism. Background Technology
[0002] A silencer is a device that allows flowing media to pass through while effectively suppressing noise propagation. It is installed in ducts through which flowing media pass, such as high-pressure gas vents, intake or exhaust ducts of fans, blowers, air compressors, and engines, and ventilation and air conditioning ducts. The performance evaluation of silencers includes three aspects: noise reduction performance, aerodynamic performance, and regenerated noise. A silencer refers to a noise reduction device that uses pipes with sound-absorbing linings and bends, or pipes with sudden changes in cross-sectional area and other discontinuous acoustic impedances, to attenuate or reflect noise within the duct. The former is called a resistive silencer, and the latter is called a reactive silencer. There are also impedance-combination silencers. When using a silencer filter pipe, the user needs to connect it, and a connection mechanism is required for the connection.
[0003] An investigation revealed that a Chinese utility model patent (CN203547868U) discloses a connection structure between an exhaust pipe and a muffler. The structure includes an exhaust pipe, a muffler, and a graphite connecting sleeve. One end of the graphite connecting sleeve is flat, and the other end is spherical. A muffler connecting plate and a muffler end cap on the exhaust pipe are connected by connecting bolts, clamping the graphite connecting sleeve between them. The end of an exhaust branch pipe passes through the muffler connecting plate and fits into the through-hole of the graphite connecting sleeve, with the exhaust pipe end located inside the graphite connecting sleeve. A spherical groove corresponding to the spherical end of the graphite connecting sleeve is provided on the muffler connecting plate or the muffler end cap. A shock-absorbing spring is fitted onto the connecting bolt on the outside of the muffler connecting plate or the muffler end cap, abutting against the outer surface of the muffler connecting plate or the muffler end cap. This invention solves the problem of air leakage due to breakage at the connection between the muffler and the exhaust pipe. It features simple structure, easy manufacturing, convenient maintenance, wide applicability, and low production cost.
[0004] When the user uses the aforementioned patent, the connecting mechanism may shift due to prolonged shaking, which will affect the accuracy of use. This will affect the user's use of the connecting mechanism and make it inconvenient and cumbersome to use and maintain. This will increase the user's usage time and affect the user's experience.
[0005] Therefore, this utility model provides a muffler filter pipe connection mechanism to solve the above problems. Utility Model Content
[0006] (a) Technical problems to be solved
[0007] This utility model provides a muffler filter pipe connection mechanism, which aims to solve the problems mentioned in the background art.
[0008] (II) Technical Solution
[0009] To achieve the above objectives, the present invention provides the following technical solution: a muffler filter pipe connection mechanism, comprising a main body, a first installation opening on one side of the main body, a plug-in plate on the other side of the main body, and a sleeve ring fitted onto the outer wall of the plug-in plate.
[0010] A fixing pipe is fixedly connected to one side of the outer wall of the sleeve ring, an extension pipe is fixedly connected to one side of the fixing pipe, and a mounting flange is fixedly connected to one side of the extension pipe. The outer wall of the mounting flange has multiple second mounting openings.
[0011] As a preferred technical solution of this application, the outer wall of the plug-in plate is fixedly connected to a limiting plate, and the number of limiting plates is multiple and the multiple limiting plates are arranged in a 360° circumferential arrangement, and the limiting plate has a limiting opening inside.
[0012] As a preferred technical solution of this application, a cylindrical insert rod is fixedly connected to the outer wall of the fixed tube, and one side of the outer wall of the cylindrical insert rod is movably connected to the inner side of the limiting plate.
[0013] As a preferred technical solution of this application, the inner ring surface of the sleeve is fixedly connected with a positioning strip, and the number of positioning strips is multiple and the multiple positioning strips are arranged in a 360° surround.
[0014] As a preferred technical solution of this application, a fixing block is fixedly connected to the top of the sleeve ring, the fixing block is symmetrically arranged with the center line of the sleeve ring as the axis of symmetry, and a nut is provided on the inner side of the fixing block.
[0015] As a preferred technical solution of this application, the inner surface of the nut is threaded with a threaded rod, and a knob handle is fixedly connected to the top of the threaded rod.
[0016] (III) Beneficial Effects
[0017] This utility model provides a muffler filter pipe connection mechanism. The initial connection is achieved by the insertion of a plug plate and a sleeve ring. The positioning design of a limiting plate and a cylindrical plug is further enhanced by the limiting opening of the limiting plate and the locking of the cylindrical plug, which prevents relative rotation and large axial displacement between the plug plate and the sleeve ring. This achieves fast and accurate docking between the pipes. At the same time, multiple 360° circumferential positioning strips on the inner surface of the sleeve ring contact the outer wall of the plug plate, further enhancing the positioning and anti-rotation effect, ensuring the stability of the connection, effectively preventing loosening or displacement during the connection process, and greatly improving the convenience of installation and the stability of the overall structure.
[0018] This utility model provides a muffler filter pipe connection mechanism, and through the combination design of a fixed block, nut and threaded rod, it provides an adjustable connection method. The user can apply external force by using the knob handle to make the threaded rod rotate in the nut and generate axial displacement, thereby applying pressure to the connection between the sleeve ring and the plug plate, and thus fine-tuning the connection tightness between the pipes to meet the needs of different working conditions. In addition, this design also facilitates subsequent maintenance and repair work, and improves the service life and reliability of the equipment. Attached Figure Description
[0019] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0021] Figure 2 This is a top view of the structure of this utility model;
[0022] Figure 3 This is a side view of the structure of this utility model;
[0023] Figure 4 This is the utility model Figure 3 Enlarged view of the structure at point A in the middle;
[0024] Figure 5 This is a cross-sectional view of the structure of this utility model.
[0025] In the diagram: 1. Main body of the object; 2. First mounting opening; 3. Insert plate; 4. Sleeve ring; 5. Fixing tube; 6. Extension tube; 7. Mounting flange; 8. Second mounting opening; 9. Limiting plate; 10. Cylindrical insert rod; 11. Positioning strip; 12. Limiting opening; 13. Fixing block; 14. Nut; 15. Threaded rod; 16. Knob handle. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0027] Please see Figure 1-5 The present invention provides a technical solution: a muffler filter pipe connection mechanism, including an object body 1, a first installation opening 2 on one side of the object body 1, and a plug plate 3 on the other side of the object body 1, with a plug ring 4 sleeved on the outer wall of the plug plate 3.
[0028] A fixing pipe 5 is fixedly connected to one side of the outer wall of the sleeve ring 4, an extension pipe 6 is fixedly connected to one side of the fixing pipe 5, and a mounting flange 7 is fixedly connected to one side of the extension pipe 6. The outer wall of the mounting flange 7 has multiple second mounting openings 8.
[0029] In this embodiment, by setting the mating structure of the plug plate 3 and the sleeve ring 4, and supplementing it with the positioning design of the limiting plate 9 and the cylindrical plug rod 10, a fast and accurate docking between the pipes is achieved. At the same time, the surrounding arrangement of multiple positioning strips 11 further ensures the stability of the socket, effectively preventing loosening or displacement during the connection process, and greatly improving the convenience of installation and the stability of the overall structure.
[0030] like Figure 1-5 As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, a limiting plate 9 is fixedly connected to the outer wall of the plug plate 3, and the number of limiting plates 9 is multiple and the multiple limiting plates 9 are arranged in a 360° surround. A limiting opening 12 is opened inside the limiting plate 9. A cylindrical plug rod 10 is fixedly connected to the outer wall of the fixing tube 5. One side of the outer wall of the cylindrical plug rod 10 is movably connected to the inner side of the limiting plate 9. A positioning strip 11 is fixedly connected to the inner surface of the sleeve ring 4, and the number of positioning strips 11 is multiple and the multiple positioning strips 11 are arranged in a 360° surround.
[0031] In this embodiment, multiple 360° surrounding limiting plates 9 on the outer wall of the plug-in plate 3 are movably engaged with the cylindrical insert rod 10 on the outer wall of the fixed tube 5, so that the cylindrical insert rod 10 is inserted into the inner side of the limiting plate 9. Through the limiting opening 12 of the limiting plate 9 and the locking of the cylindrical insert rod 10, the relative rotation and large axial displacement of the plug-in plate 3 and the sleeve ring 4 are prevented. At the same time, multiple 360° surrounding positioning strips 11 on the inner ring surface of the sleeve ring 4 contact the outer wall of the plug-in plate 3, further enhancing the positioning and anti-rotation effect and ensuring the accuracy of the connection.
[0032] like Figure 1-5As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, a fixing block 13 is fixedly connected to the top of the sleeve ring 4. The fixing block 13 is symmetrically arranged with the center line of the sleeve ring 4 as the axis of symmetry. A nut 14 is provided on the inner side of the fixing block 13. A threaded rod 15 is threadedly connected to the inner surface of the nut 14. A knob handle 16 is fixedly connected to the top of the threaded rod 15.
[0033] In this embodiment, by rotating the threaded rod 15 on the inner nut 14 of the fixing block 13 symmetrically arranged at the top of the sleeve ring 4, and applying external force by using the knob handle 16, the threaded rod 15 rotates within the nut 14 and generates axial displacement, thereby applying pressure to the connection between the sleeve ring 4 and the plug plate 3, and achieving a tight connection.
[0034] like Figure 1-5 As shown, when a user needs to use a muffler filter pipe connection mechanism, the initial connection is achieved by the insertion plate 3 and the sleeve ring 4. Multiple 360° surrounding limiting plates 9 on the outer wall of the insertion plate 3 are movably engaged with the cylindrical insertion rod 10 on the outer wall of the fixed pipe 5, allowing the cylindrical insertion rod 10 to insert into the inner side of the limiting plate 9. Through the limiting opening 12 of the limiting plate 9 and the locking action of the cylindrical insertion rod 10, relative rotation and large axial displacement between the insertion plate 3 and the sleeve ring 4 are prevented. Simultaneously, multiple 360° surrounding positioning strips 11 on the inner surface of the sleeve ring 4 contact the outer wall of the insertion plate 3, further enhancing the connection. The strong positioning and anti-rotation effect ensures the accuracy of the connection. When a tight connection is required, the threaded rod 15 on the inner nut 14 of the symmetrically arranged fixing block 13 at the top of the sleeve ring 4 is rotated. External force is applied by the knob handle 16, causing the threaded rod 15 to rotate within the nut 14 and generate axial displacement. This applies pressure to the connection between the sleeve ring 4 and the plug plate 3, achieving a tight connection. Finally, the entire connection mechanism is fixedly installed with the muffler or other equipment through the mounting flange 7 at one end of the extension pipe 6 and multiple second mounting openings 8 on its outer wall, completing the reliable connection of the muffler filter pipe.
[0035] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A silencer filter pipe connection mechanism, comprising a main body (1), characterized in that: The object body (1) has a first installation opening (2) on one side and a plug-in plate (3) on the other side. A plug-in ring (4) is sleeved on the outer wall of the plug-in plate (3). A fixing pipe (5) is fixedly connected to one side of the outer wall of the sleeve ring (4), an extension pipe (6) is fixedly connected to one side of the fixing pipe (5), and a mounting flange (7) is fixedly connected to one side of the extension pipe (6). The outer wall of the mounting flange (7) is provided with a plurality of second mounting openings (8).
2. The silencer filter pipe connection mechanism according to claim 1, characterized in that: The outer wall of the plug plate (3) is fixedly connected to a limiting plate (9), and the number of limiting plates (9) is multiple and the multiple limiting plates (9) are arranged in a 360° circumferential arrangement. A limiting opening (12) is opened inside the limiting plate (9).
3. The silencer filter pipe connection mechanism according to claim 1, characterized in that: A cylindrical insert rod (10) is fixedly connected to the outer wall of the fixed tube (5), and one side of the outer wall of the cylindrical insert rod (10) is movably connected to the inner side of the limiting plate (9).
4. The silencer filter pipe connection mechanism according to claim 1, characterized in that: The inner ring surface of the sleeve ring (4) is fixedly connected with a positioning strip (11), and the number of positioning strips (11) is multiple and the multiple positioning strips (11) are arranged in a 360° surround.
5. The silencer filter pipe connection mechanism according to claim 1, characterized in that: A fixing block (13) is fixedly connected to the top of the sleeve ring (4). The fixing block (13) is symmetrically arranged with the center line of the sleeve ring (4) as the axis of symmetry. A nut (14) is provided on the inner side of the fixing block (13).
6. The silencer filter pipe connection mechanism according to claim 5, characterized in that: The inner surface of the nut (14) is threaded with a threaded rod (15), and a knob handle (16) is fixedly connected to the top of the threaded rod (15).