Motor vehicle exhaust gas collecting structure
By designing a motor vehicle exhaust gas collection structure that includes a collection bottle, an inlet pipe, an outlet pipe, and connecting components, and utilizing a fan to provide negative pressure suction and a filter cartridge to purify the exhaust gas, the problem of sample contamination was solved, achieving efficient and safe exhaust gas collection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN BOYUE ECOLOGICAL ENVIRONMENT TECHNOLOGY CO LTD
- Filing Date
- 2025-05-30
- Publication Date
- 2026-05-12
AI Technical Summary
Existing motor vehicle exhaust gas collection structures are prone to contamination of collected samples, affecting the purity and representativeness of the collected data, and have low collection efficiency.
It adopts a structural design that includes a collection bottle, an inlet pipe, an outlet pipe, and connecting components. It uses a fan to provide negative pressure suction, combined with a filter cartridge and sealing components, to ensure smooth airflow and effectively filter exhaust gas, avoiding gas stagnation and backflow.
This improved the purity and efficiency of waste gas collection, reduced the risk of pollution during the collection process, and ensured the accuracy and representativeness of the collected data.
Smart Images
Figure CN224231385U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of exhaust gas collection technology, and in particular to a motor vehicle exhaust gas collection structure. Background Technology
[0002] As a significant source of air pollutants, vehicle exhaust emissions are crucial for environmental governance and emissions assessment. To effectively collect vehicle exhaust samples, researchers and testing institutions typically rely on specialized exhaust gas collection structures to ensure the accuracy and representativeness of the data, providing a reliable basis for subsequent component analysis, pollution assessment, and policy formulation. Therefore, developing a vehicle exhaust gas collection device with a rational structure, high collection efficiency, and low pollution risk has become an important research direction in the field of environmental monitoring equipment technology.
[0003] Existing vehicle exhaust gas collection structures mainly consist of connecting components, an intake pipe, a sampling container, and an exhaust pipe. In practical applications, the intake end is typically inserted into the vehicle's exhaust pipe outlet, and an external air pump or fan guides the exhaust gas into the sampling bottle or collection chamber, where it is then treated through condensation, filtration, or sealing. These structures largely rely on mechanical connections and negative pressure suction to complete the collection process, emphasizing sampling speed and device versatility, and possess a certain degree of basic practicality.
[0004] However, existing exhaust gas collection structures still have many shortcomings in practical use. For example, because exhaust gases are high-temperature and located in the upper part of the collection container, poor exhaust or unreasonable structural design can easily lead to gas stagnation or backflow. This results in some exhaust gases failing to be properly discharged and being contaminated by replacement gases, thus affecting the purity and representativeness of the collected samples. This structural defect directly affects the accuracy of subsequent monitoring and analysis, reducing the practical performance and reliability of the collection equipment. Therefore, there is an urgent need to provide an improved structure that can effectively avoid exhaust gas pollution and improve exhaust gas collection efficiency. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a motor vehicle exhaust gas collection structure, which aims to improve the problem that traditional exhaust gas collection structures are prone to contamination of the collected samples.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a motor vehicle exhaust gas collection structure, including a collection bottle, the top of which is threadedly connected to a top cover, and an air inlet pipe and an air outlet pipe are provided on the top of the top cover, with a connecting component provided between the air inlet pipe and the air outlet pipe.
[0007] The connecting assembly includes a connecting plate, which is internally fixedly connected to the outer walls of the first air inlet pipe and the first air outlet pipe. A connecting pipe is fixedly connected to the bottom of the connecting plate, and a connecting ring is fixedly connected to the outer wall of the connecting pipe. An air inlet pipe is fixedly connected to the inside of the top cover, and an extension pipe is fixedly connected to the inside of the top cover. The connecting pipe is slidably connected to the inside of the top cover. A slot is provided inside the top cover, and the connecting ring is fitted into the slot. A sealing assembly is provided on the outer wall of the connecting pipe. An air inlet plug is fixedly connected to one end of the first air inlet pipe, and a filter cartridge is provided at one end of the first air outlet pipe. A fan is fixedly connected inside the filter cartridge.
[0008] As a further description of the above technical solution:
[0009] The sealing assembly includes a sealing ring, the inner wall of which is fixedly connected to the outer wall of the connecting pipe, and the outer wall of which is in contact with the inner wall of the top cover.
[0010] As a further description of the above technical solution:
[0011] The top of the filter cartridge is threaded with a sealing cap, which is fixedly connected to one end of the air outlet pipe.
[0012] As a further description of the above technical solution:
[0013] A spacer ring is fixedly connected inside the filter cylinder, and a fixing ring is provided inside the filter cylinder. A filter screen is fixedly connected to the bottom of the fixing ring, and a limiting groove is formed inside the fixing ring.
[0014] As a further description of the above technical solution:
[0015] The sealing cover is fixedly connected to a telescopic rod one, and a telescopic rod two is slidably connected inside the telescopic rod one. A second spring is sleeved inside the telescopic rod one.
[0016] As a further description of the above technical solution:
[0017] One end of the second spring is fixedly connected to the inside of the first telescopic rod, and the other end of the second spring is fixedly connected to the top of the second telescopic rod.
[0018] As a further description of the above technical solution:
[0019] The filter cartridge is slidably connected to a limiting plate, and a limiting post is fixedly connected to one side of the limiting plate. The limiting post is engaged with the limiting groove.
[0020] As a further description of the above technical solution:
[0021] The filter cylinder is equipped with a first spring. One end of the first spring is fixedly connected to the other side of the limiting plate, and the other end of the first spring is fixedly connected to the inside of the filter cylinder.
[0022] This utility model has the following beneficial effects:
[0023] 1. In this utility model, the air intake plug is first inserted into the exhaust pipe of the motor vehicle. The fan will draw the exhaust gas into the collection bottle through the air intake pipe at one end of the air intake plug. Since the exhaust gas temperature is high, it will float at the top of the collection bottle. Therefore, the exhaust pipe is connected to the extension pipe to discharge as much air as possible. This achieves the effect of facilitating the connection of the pipeline to collect exhaust gas, solves the problem that traditional exhaust gas collection structures are prone to contamination of the collected samples, and improves the practicality of the exhaust gas collection structure.
[0024] 2. In this utility model, the exhaust gas is filtered by the filter screen inside the filter cylinder. The filter screen is fixed on the top of the partition ring by the fixing ring. Then, the telescopic rod one and telescopic rod two inside the sealing cover at the top of the filter cylinder are supported by the tension of the second spring, so that the bottom of the telescopic rod two is attached to the top of the fixing ring, thereby achieving the effect of filtering the exhaust gas. This solves the problem of easily releasing excess exhaust gas into the air and causing pollution, and improves the safety of the cold exhaust gas collection structure. Attached Figure Description
[0025] Figure 1 This is a perspective view of a motor vehicle exhaust gas collection structure proposed in this utility model;
[0026] Figure 2 This is a schematic diagram of the internal structure of the collection bottle of a motor vehicle exhaust gas collection structure proposed in this utility model;
[0027] Figure 3 This is a schematic diagram of the internal structure of the filter cartridge of a motor vehicle exhaust gas collection structure proposed in this utility model;
[0028] Figure 4 for Figure 2 A magnified view of the structure at point A in the middle;
[0029] Figure 5 for Figure 3 A magnified schematic diagram of the structure at point B in the middle.
[0030] Legend:
[0031] 1. Collection bottle; 2. Top cap; 3. Inlet pipe one; 4. Inlet plug; 5. Outlet pipe; 6. Filter cartridge; 7. Fan; 8. Extension pipe; 9. Inlet pipe two; 10. Connecting plate; 11. First spring; 12. Connecting pipe; 13. Slot; 14. Connecting ring; 15. Sealing ring; 16. Sealing cap; 17. Telescopic rod one; 18. Telescopic rod two; 19. Second spring; 20. Spacer ring; 21. Fixing ring; 22. Filter screen; 23. Limiting groove; 24. Limiting plate; 25. Limiting post. Detailed Implementation
[0032] 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.
[0033] Reference Figures 1-3 This utility model provides an embodiment of a motor vehicle exhaust gas collection structure, including a collection bottle 1, which is used to temporarily store exhaust gas guided into the exhaust pipe for preliminary sample collection; a top cover 2 is threadedly connected to the top of the collection bottle 1, and the top cover 2 has a detachable structure for easy cleaning and maintenance of internal components; an inlet pipe 3 and an outlet pipe 5 are provided on the top of the top cover 2, the inlet pipe 3 is used to guide exhaust gas into the interior of the collection bottle 1, and the outlet pipe 5 is used to discharge excess gas inside to maintain stable pressure in the sampling chamber; a connecting component is provided between the inlet pipe 3 and the outlet pipe 5, which serves as a seal and structural support to ensure a stable and reliable collection path;
[0034] The connecting assembly includes a connecting plate 10, which is internally fixedly connected to the outer walls of the inlet pipe 3 and the outlet pipe 5, providing a rigid connection to stabilize the positional relationship between the two pipes and prevent displacement or shaking during use. A connecting pipe 12 is fixedly connected to the bottom of the connecting plate 10, serving as a vertical extension of the connecting structure to strengthen the connection and guide the fixing function. A connecting ring 14 is fixedly connected to the outer wall of the connecting pipe 12, which, through a limiting function, cooperates with the internal structure of the top cover 2 to prevent axial displacement of the connecting pipe 12. An inlet pipe 9 is fixedly connected inside the top cover 2, further guiding the airflow into the depths of the collection bottle 1 to ensure a smooth airflow path. An extension pipe 8 is fixedly connected inside the top cover 2, extending the outlet path and facilitating the effective discharge of high-temperature gas from the top of the bottle. The connecting pipe 12 is slidably connected inside the top cover 2, allowing for a certain amount of movement during installation or disassembly, improving assembly flexibility. A slot 13 is provided inside the top cover 2. The limiting structure is used to cooperate with the connecting ring 14 for positioning and installation; the connecting ring 14 is fitted into the slot 13, and the fitting structure achieves reliable locking to prevent loosening or leakage during sampling. The outer wall of the connecting pipe 12 is provided with a sealing component, which can effectively block the gas leakage path and improve the overall sealing performance; one end of the air inlet pipe 3 is fixedly connected to the air inlet plug 4, which is used to insert into the exhaust pipe of the motor vehicle as the sampling gas source inlet to ensure stable airflow input; one end of the air outlet pipe 5 is provided with a filter cylinder 6, which is used to preliminarily purify the gas and control the gas flow rate to ensure that the exhaust gas outlet process is orderly; a fan 7 is fixedly connected inside the filter cylinder 6, which provides negative pressure suction to assist gas flow and improve the efficiency of exhaust gas entry; the sealing component includes a sealing ring 15, the inner wall of which is fixedly connected to the outer wall of the connecting pipe 12 to ensure a tight fit between the connecting pipe 12 and the sealing ring 15; the outer wall of the sealing ring 15 fits against the inner wall of the top cover 2, further improving the sealing performance of the device and preventing gas from escaping from the gap between the connecting parts.
[0035] Reference Figure 4 and Figure 5The top of the filter cylinder 6 is threaded with a sealing cap 16, which seals the top opening of the filter cylinder 6 to prevent exhaust gas leakage and maintain stable internal airflow. The sealing cap 16 is internally fixedly connected to one end of the outlet pipe 5, achieving a sealed connection of the outlet path and ensuring smooth discharge of exhaust gas after filtration. A spacer ring 20 is fixedly connected inside the filter cylinder 6, which limits the position of the internal airflow channel and enhances the uniformity of gas distribution within the filter structure. A fixing ring 21 is provided inside the filter cylinder 6, which provides an installation base for the filter screen 22, preventing the filter screen 22 from shifting position and ensuring stable filtration performance. The bottom of the fixing ring 21 is fixedly connected to... A filter screen 22 is provided to intercept particulate impurities in the exhaust gas, achieving preliminary purification. A limiting groove 23 is provided inside the fixing ring 21, providing a limiting fit structure for engagement with subsequent limiting components to ensure assembly accuracy. A telescopic rod 17 is fixedly connected inside the sealing cover 16, serving as a support structure to form a stable connection with the sealing cover 16, while also possessing a certain degree of elastic extension and retraction. A second telescopic rod 18 is slidably connected inside the first telescopic rod 17, allowing it to move up and down under elastic force, assisting the internal structure in maintaining a compressed state during operation. A second spring is sleeved inside the first telescopic rod 17. 19. The second spring 19 provides a spring return function, realizing automatic reset and buffering of internal components; one end of the second spring 19 is fixedly connected to the inside of the telescopic rod 17 to ensure stable force on one end of the spring; the other end of the second spring 19 is fixedly connected to the top of the telescopic rod 18. By applying spring force to the telescopic rod 18, the pressing or releasing adjustment of the filter assembly is realized. A limiting plate 24 is slidably connected inside the filter cylinder 6. The limiting plate 24 is used to provide a movable pressing plate structure in the filter assembly, which is convenient for replacing filter elements or adjusting the position of the assembly; a limiting post 25 is fixedly connected to one side of the limiting plate 24. The limiting post 25 is inserted into the limiting groove 2 as a positioning component. In step 3, the limiting plate 24 is used to ensure stable operation in the designated position; the limiting post 25 is fitted with the limiting groove 23, and the fitting structure prevents the limiting plate 24 from shifting position during operation, thus enhancing the overall reliability of the structure; a first spring 11 is provided inside the filter cylinder 6, which provides elastic support for the limiting plate 24, so that it maintains its elastic force during reset or adjustment; one end of the first spring 11 is fixedly connected to the other side of the limiting plate 24 to ensure a fixed connection between the spring and the limiting plate 24; the other end of the first spring 11 is fixedly connected inside the filter cylinder 6 to provide a reverse support point for the spring, thereby forming an effective elastic operation.
[0036] Working principle: When using this motor vehicle exhaust gas collection structure, firstly, the intake plug 4 is inserted into the exhaust pipe of the motor vehicle. Then, the fan 7 draws the exhaust gas into the collection bottle 1 through the intake pipe 3 at one end of the intake plug 4. Then, the excess exhaust gas is filtered and discharged through the outlet pipe 5 into the filter cartridge 6. Since the exhaust gas temperature is high, it will float on the top of the collection bottle 1. Therefore, one end of the outlet pipe 5 is connected to the extension pipe 8 to discharge as much air as possible. The intake pipe 3 and the outlet pipe 5 are connected through the connecting plate 10. Then, the bottom of the connecting plate 10 is inserted into the top cover 2 through the connecting pipe 12. The connecting ring 14 on the outer wall of the connecting pipe 12 is embedded in the slot 13 and locked. The connecting pipe 12 and the top cover 2 are sealed by the sealing ring 15, which achieves the effect of facilitating the collection of exhaust gas by the connecting pipe 12.
[0037] The exhaust gas is filtered through the filter screen 22 inside the filter cylinder 6. The filter screen 22 is fixed on the top of the spacer ring 20 by the fixing ring 21. Then, the telescopic rod 17 and the telescopic rod 18 inside the sealing cover 16 at the top of the filter cylinder 6 are supported by the tension of the second spring 19, so that the bottom of the telescopic rod 18 is attached to the top of the fixing ring 21 for limitation. At the same time, the fixing ring 21 is further fixed by the limiting post 25 inside the filter cylinder 6 embedded in the limiting groove 23. The limiting post 25 is limited in the filter cylinder 6 by the limiting plate 24 and supported by the tension of the first spring 11, so that the limiting post 25 can be stably embedded in the limiting groove 23, thereby achieving the effect of filtering exhaust gas.
[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A motor vehicle exhaust gas collection structure, comprising a collection bottle (1), characterized in that: The top of the collection bottle (1) is threadedly connected to a top cover (2), and the top of the top cover (2) is provided with an air inlet pipe (3) and an air outlet pipe (5), and a connecting component is provided between the air inlet pipe (3) and the air outlet pipe (5). The connecting assembly includes a connecting plate (10), which is fixedly connected to the outer wall of the first air inlet pipe (3) and the air outlet pipe (5). A connecting pipe (12) is fixedly connected to the bottom of the connecting plate (10). A connecting ring (14) is fixedly connected to the outer wall of the connecting pipe (12). An air inlet pipe (9) is fixedly connected to the inside of the top cover (2). An extension pipe (8) is fixedly connected to the inside of the top cover (2). The connecting pipe (12) is slidably connected to the inside of the top cover (2). A slot (13) is provided inside the top cover (2). The connecting ring (14) is fitted into the slot (13). A sealing assembly is provided on the outer wall of the connecting pipe (12). An air inlet plug (4) is fixedly connected to one end of the first air inlet pipe (3). A filter cylinder (6) is provided at one end of the air outlet pipe (5). A fan (7) is fixedly connected inside the filter cylinder (6).
2. The motor vehicle exhaust gas collection structure according to claim 1, characterized in that: The sealing assembly includes a sealing ring (15), the inner wall of which is fixedly connected to the outer wall of the connecting pipe (12), and the outer wall of the sealing ring (15) is in contact with the inner wall of the top cover (2).
3. The motor vehicle exhaust gas collection structure according to claim 1, characterized in that: The top of the filter cylinder (6) is threaded with a sealing cap (16), which is fixedly connected to one end of the air outlet pipe (5).
4. The motor vehicle exhaust gas collection structure according to claim 1, characterized in that: A spacer ring (20) is fixedly connected inside the filter cylinder (6), and a fixing ring (21) is provided inside the filter cylinder (6). A filter screen (22) is fixedly connected to the bottom of the fixing ring (21), and a limiting groove (23) is opened inside the fixing ring (21).
5. The motor vehicle exhaust gas collection structure according to claim 3, characterized in that: The sealing cover (16) is fixedly connected to a telescopic rod one (17), and the telescopic rod one (17) is slidably connected to a telescopic rod two (18). The telescopic rod one (17) is fitted with a second spring (19).
6. The motor vehicle exhaust gas collection structure according to claim 5, characterized in that: One end of the second spring (19) is fixedly connected to the inside of the first telescopic rod (17), and the other end of the second spring (19) is fixedly connected to the top of the second telescopic rod (18).
7. The motor vehicle exhaust gas collection structure according to claim 1, characterized in that: The filter cylinder (6) is slidably connected to a limiting plate (24), and a limiting post (25) is fixedly connected to one side of the limiting plate (24). The limiting post (25) is fitted into the limiting groove (23).
8. The motor vehicle exhaust gas collection structure according to claim 1, characterized in that: The filter cylinder (6) is provided with a first spring (11), one end of the first spring (11) is fixedly connected to the other side of the limiting plate (24), and the other end of the first spring (11) is fixedly connected to the inside of the filter cylinder (6).