Automobile exhaust treatment device with filtering mechanism

Abstract

This invention discloses an automotive exhaust gas treatment device with a filtration mechanism, relating to the field of exhaust gas treatment technology. It includes an exhaust pipe and a filtration assembly. The filtration assembly includes a filter tube, one end of which is inserted into the inside of the exhaust pipe, and the other end of which is fitted with a protective shell. The surface of the protective shell has several exhaust holes, and three filter plates are arranged inside the filter tube. Through a graded filtration design, convenient installation structure, multiple sealing and stabilization features, and optimized airflow path, it achieves four major advantages: the three-layer filter plate combined with a honeycomb plate improves the interception efficiency of pollutants; the press-type control component shortens installation time and reduces maintenance costs; the limiting, sealing, and elastic locking structure reduces leakage rate and improves vibration resistance; and the uniform airflow distribution extends the filter plate replacement cycle, comprehensively improving equipment performance and reliability.

Description

Technical Field

[0001] This invention specifically relates to an automotive exhaust gas treatment device with a filtration mechanism, belonging to the field of exhaust gas treatment technology. Background Technology

[0002] With the continuous increase in global car ownership, vehicle exhaust emissions have become a major source of air pollution. Pollutants such as particulate matter, nitrogen oxides, and hydrocarbons contained in exhaust not only damage the ecological environment but also seriously threaten human health, leading to frequent respiratory and cardiovascular diseases. Under these circumstances, the research and development and application of vehicle exhaust treatment equipment has become a critical issue that the industry urgently needs to address.

[0003] Currently, most automotive exhaust treatment equipment on the market purifies exhaust gases through catalytic converters and particulate filters. However, these devices have several shortcomings: some filter devices use a single filter structure, which cannot accurately classify and filter pollutants of different particle sizes, resulting in poor exhaust gas purification effects and difficulty in meeting increasingly stringent environmental standards; the equipment is often fixed to the vehicle's exhaust pipe with bolts, which makes installation and disassembly cumbersome, and during vehicle operation, vibrations and other factors can easily cause loosening and leakage, affecting both the exhaust gas treatment effect and shortening the equipment's lifespan; in addition, existing exhaust gas treatment equipment has defects in airflow design, resulting in uneven flow velocity when exhaust gas enters the filter device, causing excessive local filtration pressure, reducing filtration efficiency, and significantly shortening the equipment maintenance cycle.

[0004] Therefore, developing an automotive exhaust gas treatment device with an innovative filtration mechanism to solve the above-mentioned technical problems is of great significance for improving exhaust gas purification levels and improving air quality. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing an automotive exhaust gas treatment device with a filtration mechanism. Through a tiered filtration design, convenient installation structure, multiple sealing and stabilization features, and optimized airflow path, it achieves four major advantages: the combination of three-layer filter plates and honeycomb panels improves the interception efficiency of pollutants; the press-type control component shortens installation time and reduces maintenance costs; the limiting, sealing, and elastic locking structure reduces leakage rate and improves vibration resistance; and the uniform airflow distribution extends the filter plate replacement cycle, comprehensively improving equipment performance and reliability.

[0006] The present invention achieves the above-mentioned objective through the following technical solution: an automotive exhaust gas treatment device with a filtration mechanism, comprising an exhaust pipe, and further comprising: The filter assembly includes a filter tube, one end of which is inserted into the inside of the exhaust pipe, and the other end of which is fitted with a protective shell. The surface of the protective shell has several exhaust holes, and three filter plates are provided inside the filter tube. The control component includes mounting blocks symmetrically arranged on both sides of the filter tube. A control outer cylinder is fixedly connected to both the upper and lower sides of the mounting blocks. A control inner rod is slidably connected to the inner side of the control outer cylinder. A control transmission rod is fixedly connected to the upper end of the control inner rod. The reinforcement assembly includes a reinforcement column fixedly connected to the end of the control transmission rod, a reinforcement plate installed on the surface of the exhaust pipe, and a reinforcement groove adapted to the reinforcement column on the surface of the reinforcement plate.

[0007] By adopting the above technical solution, one end of the filter tube of the filter assembly is inserted into the exhaust pipe, and the other end discharges the treated exhaust gas through the protective shell and exhaust port. The three-layer filter plate inside is the core of the filtration. The control assembly realizes mechanical transmission through the mounting block, control outer cylinder, control inner rod and control transmission rod. The reinforcement assembly uses reinforcement columns, reinforcement plates and reinforcement grooves to realize a stable connection between the filter assembly and the exhaust pipe, which is the basis for the entire equipment to achieve efficient filtration and stable operation.

[0008] Preferably, the apertures of the three filter plates decrease sequentially from large to small in the direction of the protective shell.

[0009] By adopting the above technical solution, when the exhaust gas passes through the filter plate, large particulate pollutants are first intercepted by the filter plate with a larger pore size, and then smaller particles are filtered by the subsequent filter plates in sequence. This effectively improves the filtration efficiency for pollutants of different particle sizes, ensures more thorough exhaust gas purification, and meets high-standard environmental emission requirements.

[0010] Preferably, one end of the filter tube inserted into the exhaust pipe is fixedly connected to an airflow guide shell, and a honeycomb plate is installed on the inner side of the filter tube near the airflow guide shell.

[0011] By adopting the above technical solution, the airflow guide shell at one end of the filter tube inserted into the exhaust pipe can guide the exhaust gas into the filter tube evenly, avoid excessive local flow velocity, and ensure the uniformity of filtration. The honeycomb plate near the airflow guide shell can further rectify the airflow and reduce turbulence, which not only helps to improve filtration efficiency, but also reduces the impact of airflow on the filter plate and extends the service life of the filter plate.

[0012] Preferably, limiting strips are fixedly connected to the upper and lower surfaces of the filter tube, a sealing ring is fixedly connected to the surface of the filter tube, and a sealing groove adapted to the sealing ring is opened on the surface of the exhaust pipe. Mounting plates are fixedly connected to the left and right sides of the filter tube, positioning posts are fixedly connected to the surface of the mounting plates, and positioning holes adapted to the positioning posts are opened on the surface of the exhaust pipe.

[0013] By adopting the above technical solutions, the limiting strip can limit the position of the filter tube in the exhaust pipe, ensuring the accuracy of the filter component installation position; the sealing ring and sealing groove cooperate to achieve radial sealing and prevent exhaust gas leakage; the combination of mounting plate, positioning column and positioning hole ensures that the filter tube is accurately positioned in the axial direction, while facilitating installation and disassembly, enhancing the convenience and stability of equipment installation.

[0014] Preferably, the mounting block is fixedly connected to the surface of the mounting plate, and a first guide post is fixedly connected to the inner bottom surface of the outer control cylinder. A first spring is wound around the surface of the first guide post. The first guide post is inserted into the surface of the inner control rod and is slidably connected to the inner control rod. The inner control rod compresses the first spring.

[0015] By adopting the above technical solution, the mounting block is fixed on the mounting plate, providing a mounting foundation for the control components. The first guide post and the first spring inside the outer cylinder provide guiding and restoring force to the inner control rod. When the inner control rod compresses the first spring, it slides along the guide post when an external force is applied. This, in turn, drives the reinforcing components via the control transmission rod, enabling the installation and disassembly of the equipment. The spring's restoring function ensures the reliability of the structure.

[0016] Preferably, the surface of the inner control rod is provided with a slot, the upper end of the outer control cylinder is fixedly connected to an installation sleeve, and the surface of the installation sleeve is provided with a rocker buckle that matches the slot.

[0017] By adopting the above technical solution, the groove on the surface of the control inner rod engages with the rocker latch on the upper end of the control outer cylinder mounting sleeve to lock the position of the control inner rod. When it is necessary to install or disassemble the equipment, the control inner rod is fixed and released by operating the rocker latch and the groove to control the extension and retraction of the reinforcement component. The operation is simple, stable and reliable.

[0018] Preferably, the surface of the mounting block is provided with a second guide groove, and a second guide post is provided on the inner side of the second guide groove. The second guide post is slidably connected to the mounting block through the second guide groove. A pressing plate is fixedly connected to the end of the second guide post. A second spring is fixedly connected between the pressing plate and the mounting block. Pressing blocks for pressing the rocker latch are fixedly connected to both ends of the pressing plate.

[0019] By adopting the above technical solution, the pressing plate slides within the second guide groove of the mounting block via the second guide post, and the second spring provides a restoring force for the pressing plate. The pressing blocks at both ends of the pressing plate can press down on the rocker latches to release the lock on the control rod. This design allows users to easily operate the control components, enabling rapid installation and disassembly of the equipment and improving the efficiency of equipment maintenance.

[0020] Preferably, a limiting plate is fixedly connected to the surface of the control outer cylinder, and a limiting groove adapted to the limiting plate is formed on the surface of the pressing plate.

[0021] By adopting the above technical solution, the limiting plate on the surface of the outer cylinder and the limiting groove on the surface of the pressing plate are matched, which can prevent the pressing plate from shifting during operation, ensure that the pressing block accurately presses down on the rocker latch, ensure the stability and reliability of the unlocking operation, and avoid the problem of operation failure caused by misalignment of the pressing plate.

[0022] Preferably, the surface of the reinforcing column has two symmetrically formed movable grooves, and a movable spherical column is provided inside the movable groove. The movable spherical column is slidably connected to the reinforcing column through the movable groove. A fourth spring is fixedly connected between the movable spherical column and the reinforcing column, and a third guide column is provided inside the fourth spring. The third guide column is fixedly connected to the inner surface of the reinforcing column and slidably connected to the movable spherical column. A conical groove is formed on the bottom surface of the reinforcing column.

[0023] By adopting the above technical solution, a movable spherical column is installed in the movable groove on the surface of the reinforcing column, connected by a fourth spring and a third guide column. When the reinforcing column is inserted into the reinforcing groove, the movable spherical column is squeezed by the inner wall, compressing the fourth spring and embedding itself into the spherical groove on the reinforcing plate. At the same time, the conical groove on the bottom surface of the reinforcing column cooperates with the conical block in the reinforcing groove to form a double locking. This elastic interlocking structure not only achieves a stable connection but also effectively resists vibrations during vehicle operation, preventing the equipment from loosening.

[0024] Preferably, a conical block is provided on the inner side of the reinforcing groove, a third spring is wound around the surface of the conical block, the reinforcing column compresses the third spring, and the reinforcing plate is provided with a spherical groove at the reinforcing groove that is adapted to the movable spherical column.

[0025] By adopting the above technical solution, the conical block and the wound third spring inside the reinforcing groove cooperate with the conical groove of the reinforcing column to provide buffering and guiding effects when the reinforcing column is inserted, making the installation process smoother. At the same time, the cooperation between the movable spherical column and the spherical groove further enhances the stability of the connection, ensuring that the filter assembly and the exhaust pipe maintain a reliable connection under various operating conditions, and guaranteeing the normal operation of the exhaust gas treatment equipment.

[0026] The beneficial effects of this invention are as follows: This automotive exhaust gas treatment device with a filtration mechanism constructs a scientific graded filtration system by setting three layers of filter plates with progressively decreasing pore sizes. Large particulate pollutants are first intercepted by the first filter plate, while smaller particles are gradually filtered by subsequent filter plates. Compared with the traditional single-screen filter structure, this improves the interception efficiency of pollutants such as particulate matter and nitrogen oxides in exhaust gas. At the same time, the combination of the airflow guide shell and the honeycomb plate effectively rectifies the exhaust gas, avoids the concentration of filtration pressure caused by excessively high local flow velocities, further ensuring the uniformity and efficiency of filtration, and making exhaust gas emissions more compliant with stringent environmental standards. The innovative design of the control and reinforcement components enables rapid installation and disassembly of the equipment. The press plate, rocker latch, and control rod work together, allowing users to easily release the locking of the reinforcement column and detach the filter assembly from the exhaust pipe with a simple press. Compared to traditional bolt fixing methods, installation time is significantly reduced. This not only greatly improves equipment maintenance efficiency but also reduces labor and time costs, making it particularly suitable for scenarios involving frequent filter replacements in automotive repair and maintenance. In terms of sealing and fixing, this invention adopts a multi-dimensional design. The limiting strip, sealing ring, positioning post and other structures work together. The limiting strip prevents the filter tube from rotating circumferentially, the sealing ring achieves radial sealing, and the positioning post ensures accurate axial positioning, effectively preventing exhaust gas leakage. In the reinforcement component, the reinforcement post and reinforcement groove form a double elastic lock through the movable spherical column, conical block and other structures, which significantly extends the service life of the equipment and reduces the performance degradation caused by loosening and air leakage. The honeycomb panel and airflow guide shell rectify the exhaust gas, ensuring a uniform airflow across the filter plates and reducing the impact pressure of the airflow on the filter plates. Simultaneously, the uniform airflow distribution helps improve filtration efficiency, reduces filtration dead zones caused by uneven airflow, and enhances the overall operating performance of the equipment. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the filter tube in this invention; Figure 3 This is a schematic diagram of the limiting strip in this invention; Figure 4 This is a schematic diagram of the reinforcing plate in this invention; Figure 5 This is a schematic diagram of the reinforcing groove in this invention; Figure 6 This is a schematic diagram of the mounting block in this invention; Figure 7 This is a schematic diagram of the control transmission rod in this invention; Figure 8 This is a schematic diagram of the card slot structure in this invention; Figure 9 This is a schematic diagram of the structure of the third guide post in this invention; In the picture: 1. Exhaust pipe; 2. Filter assembly; 21. Filter tube; 22. Protective shell; 23. Airflow guide shell; 24. Honeycomb panel; 25. Filter plate; 26. Sealing ring; 27. Limiting strip; 28. Mounting plate; 29. ​​Positioning post; 210. Positioning hole; 211. Sealing groove; 3. Control assembly; 31. Mounting block; 32. Control outer cylinder; 33. Pressing plate; 34. Second spring; 35. Second guide groove; 36. Second guide post; 37. Limiting plate; 38. Limiting groove 39. Pressing block; 310. Control inner rod; 311. First guide post; 312. First spring; 313. Control transmission rod; 314. Mounting sleeve; 315. Rocker buckle; 316. Slot; 4. Reinforcing assembly; 41. Reinforcing plate; 42. Reinforcing groove; 43. Spherical groove; 44. Third spring; 45. Conical block; 46. Reinforcing post; 47. Movable spherical post; 48. Movable groove; 49. Conical groove; 410. Fourth spring; 411. Third guide post. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please see Figures 1-9 As shown, an automotive exhaust gas treatment device with a filtration mechanism includes an exhaust pipe 1, and further includes: The filter assembly 2 includes a filter tube 21. One end of the filter tube 21 is inserted into the inside of the exhaust pipe 1, and the other end of the filter tube 21 is fitted with a protective shell 22. Several exhaust holes are opened on the surface of the protective shell 22, and three filter plates 25 are provided on the inside of the filter tube 21. The control component 3 includes mounting blocks 31 symmetrically arranged on both sides of the filter tube 21. Control outer cylinders 32 are fixedly connected to both the upper and lower sides of the mounting blocks 31. Control inner rods 310 are slidably connected to the inner side of the control outer cylinders 32. Control transmission rods 313 are fixedly connected to the upper end of the control inner rods 310. The reinforcement component 4 includes a reinforcement column 46 fixedly connected to the end of the control transmission rod 313, and a reinforcement plate 41 installed on the surface of the exhaust pipe 1. The surface of the reinforcement plate 41 is provided with a reinforcement groove 42 that is adapted to the reinforcement column 46.

[0030] The apertures of the three filter plates 25 decrease sequentially from large to small towards the protective shell 22.

[0031] One end of the filter tube 21 inserted into the exhaust pipe 1 is fixedly connected to an airflow guide shell 23, and a honeycomb plate 24 is installed on the inner side of the filter tube 21 near the airflow guide shell 23.

[0032] Limiting strips 27 are fixedly connected to the upper and lower surfaces of the filter tube 21. A sealing ring 26 is fixedly connected to the surface of the filter tube 21. A sealing groove 211 that matches the sealing ring 26 is opened on the surface of the exhaust pipe 1. Mounting plates 28 are fixedly connected to the left and right sides of the filter tube 21. A positioning post 29 is fixedly connected to the surface of the mounting plate 28. A positioning hole 210 that matches the positioning post 29 is opened on the surface of the exhaust pipe 1.

[0033] Mounting block 31 is fixedly connected to the surface of mounting plate 28. A first guide post 311 is fixedly connected to the inner bottom surface of control outer cylinder 32. A first spring 312 is wound around the surface of the first guide post 311. The first guide post 311 is inserted into the surface of control inner rod 310 and is slidably connected with control inner rod 310. Control inner rod 310 compresses the first spring 312.

[0034] The inner control rod 310 has a slot 316 on its surface, and the upper end of the outer control cylinder 32 is fixedly connected to an installation sleeve 314. The surface of the installation sleeve 314 is fitted with a rocker buckle 315 that matches the slot 316.

[0035] The surface of the mounting block 31 is provided with a second guide groove 35, and a second guide post 36 is provided on the inner side of the second guide groove 35. The second guide post 36 is slidably connected to the mounting block 31 through the second guide groove 35. A pressing plate 33 is fixedly connected to the end of the second guide post 36. A second spring 34 is fixedly connected between the pressing plate 33 and the mounting block 31. Pressing blocks 39 for pressing the rocker latch 315 are fixedly connected to both ends of the pressing plate 33.

[0036] A limiting plate 37 is fixedly connected to the surface of the outer cylinder 32, and a limiting groove 38 adapted to the limiting plate 37 is provided on the surface of the pressing plate 33.

[0037] Two movable grooves 48 are symmetrically opened on the surface of the reinforcing column 46. A movable spherical column 47 is provided inside the movable groove 48. The movable spherical column 47 is slidably connected to the reinforcing column 46 through the movable groove 48. A fourth spring 410 is fixedly connected between the movable spherical column 47 and the reinforcing column 46. A third guide column 411 is provided inside the fourth spring 410. The third guide column 411 is fixedly connected to the inner surface of the reinforcing column 46 and slidably connected to the movable spherical column 47. A conical groove 49 is opened on the bottom surface of the reinforcing column 46.

[0038] A conical block 45 is provided on the inner side of the reinforcing groove 42. A third spring 44 is wound around the surface of the conical block 45. The reinforcing column 46 compresses the third spring 44. The reinforcing plate 41 is located at the reinforcing groove 42 and has a spherical groove 43 that is adapted to the movable spherical column 47.

[0039] Working principle: The exhaust gas enters the filter tube 21 from the exhaust pipe 1. The airflow guide shell 23 at the insertion end guides the exhaust gas to enter the filter tube 21 evenly, avoiding airflow turbulence. The honeycomb plate 24 near the airflow guide shell 23 further disperses the exhaust gas into multiple fine streams, increasing the contact area between the exhaust gas and the filter plate 25 and improving the filtration efficiency. The apertures of the three filter plates 25 inside the filter tube 21 decrease sequentially from large to small along the direction of the protective shell 22. The first-stage filter plate 25 intercepts larger particulate impurities, the second-stage filter plate 25 filters medium-sized particles, and the third-stage filter plate 25 finely filters tiny particles. The sealing ring 26 on the surface of the filter tube 21 is embedded in the sealing groove 211 of the exhaust pipe 1 to prevent exhaust gas leakage. The limiting strip 27 is inserted into the inner wall of the exhaust pipe 1, and the positioning post 29 on the mounting plate 28 is inserted into the positioning hole 210 of the exhaust pipe 1 to ensure that the filter tube 21 is accurately installed and initially locked. The outer cylinder 32 is fixed on the mounting block 31, and the first guide post 311 inside is fitted with a first spring 312. The inner rod 310 compresses the first spring 312 and slides along the first guide post 311. At this time, the slot 316 on the surface of the control inner rod 310 is locked by the rocker latch 315 on the mounting sleeve 314, keeping the control inner rod 310 fixed. When unlocking, press the pressing plate 33, and the pressing blocks 39 at both ends of the plate press down on the rocker latch 315, causing it to disengage from the slot 316. At this time, the first spring 312 resets and pushes the inner control rod 310 upward, driving the control transmission rod 313 to move. The pressing plate 33 slides in the second guide groove 35 of the mounting block 31 through the second guide post 36, and the second spring 34 provides the reset force. The limiting plate 37 of the outer control cylinder 32 is embedded in the limiting groove 38 of the pressing plate 33 to prevent displacement during pressing. The control transmission rod 313 drives the reinforcing column 46 to move downward. The conical groove 49 on the bottom surface of the reinforcing column 46 contacts the conical block 45 in the reinforcing groove 42, compressing the third spring 44, so that the reinforcing column 46 is embedded in the reinforcing groove 42. The movable spherical column 47 on the surface of the reinforcing column 46 slides in the movable groove 48. When the reinforcing column 46 is fully inserted into the reinforcing groove 42, the movable spherical column 47 is pushed by the fourth spring 410. The spherical groove 43 of the reinforcing plate 41 is inserted into the bottom to form a mechanical lock, preventing the equipment from loosening due to vibration. The third spring 44 and the fourth spring 410 provide elastic buffers between the reinforcing column 46 and the conical block 45, and between the movable spherical column 47 and the reinforcing column 46, respectively, which ensures the connection strength and reduces vibration damage. The exhaust gas enters the filter pipe 21 through the exhaust pipe 1 and is purified by the airflow guide shell 23, the honeycomb plate 24 and the three-stage filter plate 25. The control component 3 realizes the installation positioning and unlocking adjustment of the filter pipe 21 through the pressing plate 33, the rocker latch 315 and other structures. The reinforcement component 4 uses the cooperation of the reinforcing column 46, the movable spherical column 47 and the reinforcement groove 42 to ensure the stable connection of the equipment during operation, and finally forms an integrated exhaust gas treatment system of filtration, control and reinforcement.

[0040] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0041] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A vehicle exhaust gas treatment device with a filtration mechanism, comprising an exhaust pipe (1), characterized in that: Also includes: The filter assembly (2) includes a filter tube (21), one end of which is inserted into the inside of the exhaust pipe (1), and the other end of which is fitted with a protective shell (22). The surface of the protective shell (22) is provided with several exhaust holes, and three filter plates (25) are provided inside the filter tube (21). The control component (3) includes mounting blocks (31) symmetrically arranged on both sides of the filter tube (21). The upper and lower sides of the mounting blocks (31) are fixedly connected to the outer control cylinder (32). The inner side of the outer control cylinder (32) is slidably connected to the inner control rod (310). The upper end of the inner control rod (310) is fixedly connected to the control transmission rod (313). The reinforcement component (4) includes a reinforcement column (46) fixedly connected to the end of the control transmission rod (313), and a reinforcement plate (41) is installed on the surface of the exhaust pipe (1). The surface of the reinforcement plate (41) is provided with a reinforcement groove (42) that is compatible with the reinforcement column (46).

2. The automotive exhaust gas treatment device with a filtration mechanism as described in claim 1, characterized in that: The apertures of the three filter plates (25) decrease sequentially from large to small in the direction of the protective shell (22).

3. The automotive exhaust gas treatment device with a filtration mechanism as described in claim 2, characterized in that: One end of the filter tube (21) inserted into the exhaust pipe (1) is fixedly connected to an airflow guide shell (23), and a honeycomb plate (24) is installed on the inner side of the filter tube (21) near the airflow guide shell (23).

4. The automotive exhaust gas treatment device with a filtration mechanism as described in claim 3, characterized in that: Limiting strips (27) are fixedly connected to the upper and lower surfaces of the filter tube (21). A sealing ring (26) is fixedly connected to the surface of the filter tube (21). A sealing groove (211) adapted to the sealing ring (26) is opened on the surface of the exhaust pipe (1). Mounting plates (28) are fixedly connected to the left and right sides of the filter tube (21). A positioning post (29) is fixedly connected to the surface of the mounting plate (28). A positioning hole (210) adapted to the positioning post (29) is opened on the surface of the exhaust pipe (1).

5. The automotive exhaust gas treatment device with a filtration mechanism as described in claim 4, characterized in that: The mounting block (31) is fixedly connected to the surface of the mounting plate (28). The inner bottom surface of the control outer cylinder (32) is fixedly connected to a first guide post (311). A first spring (312) is wound around the surface of the first guide post (311). The first guide post (311) is inserted into the surface of the control inner rod (310) and is slidably connected to the control inner rod (310). The control inner rod (310) compresses the first spring (312).

6. The automotive exhaust gas treatment device with a filtration mechanism as described in claim 5, characterized in that: The inner control rod (310) has a slot (316) on its surface, and the upper end of the outer control cylinder (32) is fixedly connected to an installation sleeve (314). The surface of the installation sleeve (314) is fitted with a rocker buckle (315) that is compatible with the slot (316).

7. The automotive exhaust gas treatment device with a filtration mechanism as described in claim 6, characterized in that: The surface of the mounting block (31) is provided with a second guide groove (35), and a second guide post (36) is provided on the inner side of the second guide groove (35). The second guide post (36) is slidably connected to the mounting block (31) through the second guide groove (35). A pressing plate (33) is fixedly connected to the end of the second guide post (36). A second spring (34) is fixedly connected between the pressing plate (33) and the mounting block (31). Pressing blocks (39) for pressing the rocker latch (315) are fixedly connected to both ends of the pressing plate (33).

8. The automotive exhaust gas treatment device with a filtration mechanism as described in claim 7, characterized in that: The surface of the control outer cylinder (32) is fixedly connected to a limiting plate (37), and the surface of the pressing plate (33) is provided with a limiting groove (38) that is adapted to the limiting plate (37).

9. The automotive exhaust gas treatment device with a filtration mechanism as described in claim 8, characterized in that: The surface of the reinforcing column (46) is symmetrically provided with two movable grooves (48). A movable spherical column (47) is provided inside the movable groove (48). The movable spherical column (47) is slidably connected to the reinforcing column (46) through the movable groove (48). A fourth spring (410) is fixedly connected between the movable spherical column (47) and the reinforcing column (46). A third guide column (411) is provided inside the fourth spring (410). The third guide column (411) is fixedly connected to the inner surface of the reinforcing column (46) and slidably connected to the movable spherical column (47). A conical groove (49) is provided on the bottom surface of the reinforcing column (46).

10. The automotive exhaust gas treatment device with a filtration mechanism as described in claim 9, characterized in that: A conical block (45) is provided on the inner side of the reinforcing groove (42), and a third spring (44) is wound on the surface of the conical block (45). The reinforcing column (46) compresses the third spring (44), and the reinforcing plate (41) is provided with a spherical groove (43) at the reinforcing groove (42) that is compatible with the movable spherical column (47).

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