Motor vehicle detection waste gas sampling device
By designing a quick-locking assembly for the exhaust gas collection cylinder and the airtight door, the problem of high detection costs caused by differences in exhaust gas concentration under different vehicle conditions was solved, enabling rapid batch storage and efficient detection of exhaust gas.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGXI JINGKE DIGITAL TECHNOLOGY CO LTD
- Filing Date
- 2025-05-12
- Publication Date
- 2026-04-17
AI Technical Summary
Motor vehicles exhibit significant differences in exhaust gas concentrations under different operating conditions. Existing technologies require the preparation of different storage devices in batches, leading to increased testing costs and time, and making it difficult to conduct exhaust gas testing quickly.
A vehicle exhaust gas sampling device was designed, including an exhaust gas collection cylinder, an airtight door, and an intake fan. The device achieves stable storage and rapid regulation of exhaust gas through a quick-locking component and a pressure-blocking component, and utilizes the elasticity of the airtight door to close and open the exhaust gas collection chamber.
This technology enables rapid batch sampling and storage of exhaust gases, reducing testing costs and time while improving testing efficiency.
Smart Images
Figure CN224136984U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of sampling, and in particular to a sampling device for motor vehicle exhaust gas. Background Technology
[0002] While the motor vehicle industry is developing rapidly and the production and ownership of motor vehicles are increasing, motor vehicles are also causing air pollution, namely motor vehicle exhaust pollution. As the number of vehicles increases, the amount of exhaust gas emitted by motor vehicles is also increasing, making the treatment of motor vehicle exhaust gas particularly important. Because the concentration of exhaust gas emissions from motor vehicles varies significantly under different operating conditions (such as idling, acceleration, constant speed, and deceleration), the testing of motor vehicle exhaust gas usually requires multi-stage testing to ensure that the pollutants emitted under different operating conditions meet the standards. When sampling exhaust gas under different operating conditions, different storage devices need to be prepared in batches to preserve the sampled exhaust gas, which increases the cost and time of motor vehicle exhaust gas testing, thus hindering the rapid testing of motor vehicle exhaust gas. Utility Model Content
[0003] In order to overcome the shortcomings of the existing technology, this utility model provides a motor vehicle exhaust gas sampling device.
[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a motor vehicle exhaust gas sampling device, including an exhaust gas collection cylinder, an air nozzle connector, and an intake fan. The exhaust gas collection cylinder has a concave groove on its exterior and several exhaust gas collection chambers inside, which are used to store the detection gas. The intake fan is slidably connected to the groove on the exterior of the exhaust gas collection cylinder. The exhaust gas collection cylinder has inlet slots on its exterior corresponding to the number of exhaust gas collection chambers. A contraction slot is formed inside the inlet slot. An airtight door is slidably connected internally to seal the interior of the exhaust gas collection chamber. An outer plate is fixedly connected to the outside of the airtight door, and a top plate is fixedly connected to the outside of the outer plate. The top plate is located above the outside of the airtight door. A slot with the same width as the outer plate is opened on the side of the intake fan near the air inlet. A quick-locking assembly is provided on the side of the intake fan near the air inlet. The quick-locking assembly includes an insert roller. The insert roller moves to allow the intake fan to pass through and extend into the interior of the air inlet. The insert roller is located above the outer plate.
[0005] As a preferred technical solution of this utility model, the quick-locking assembly further includes two side slots, which are respectively opened on both sides of the outside of the exhaust gas collection cylinder. Each insert roller has a side beam plate slidably connected inside. The side beam plate is an L-shaped plate. The two side beam plates are respectively fixedly connected to the two sides of the outside of the intake fan. The intake fan moves stably upward or downward outside the exhaust gas collection cylinder through the two side beam plates. The quick-locking assembly also includes a circular slot, which is opened inside the intake fan and located outside the insert roller. A movable collar is movably connected inside the circular slot. The movable collar is fixedly sleeved on the outside of the insert roller. A spring is fixedly connected outside the movable collar. The end of the spring away from the movable collar is fixedly connected inside the circular slot. A pull plate is fixedly connected outside the insert roller. The pull plate is set outside the intake fan and is used to limit the insert roller to prevent the insert roller from retracting into the air inlet slot.
[0006] As a preferred technical solution of this utility model, a pressure-blocking component is provided inside the shrinkage groove. The pressure-blocking component includes several vertical springs. The several vertical springs are movably connected inside the shrinkage groove, and the vertical springs are located below the outside of the airtight door. The vertical springs are used to provide an upward elastic force to the airtight door, and the elastic force provided by the vertical springs to the airtight door causes it to seal the inside of the exhaust gas collection chamber.
[0007] As a preferred technical solution of this utility model, a number of vertical springs are externally fixedly connected to mounting bases. The mounting bases are convex plate bodies. An installation slot is opened on the side of the airtight door near the mounting base. The mounting base is movably engaged inside the installation slot. The engagement between the installation slot and the mounting base ensures the stability of the airtight door moving upward or downward inside the contraction slot.
[0008] Compared with the prior art, the beneficial effects that this utility model can achieve are:
[0009] 1. By setting up a quick-locking component and a pressure-blocking component, the pressure-blocking component, together with the airtight door, stably stores the exhaust gas collected into the exhaust gas collection chamber. In conjunction with the set up quick-locking component, the position of the intake fan is quickly adjusted and fixed, so as to achieve the effect of quickly sampling and storing exhaust gas in batches.
[0010] 2. By pulling the pull plate away from the exhaust gas collection cylinder, the insert roller separates from the top plate. At this time, the elastic force generated by the vertical spring drives the mounting base and moves the air-sealed door upward. The upward movement of the air-sealed door closes the inside of the air inlet slot and seals the inside of the exhaust gas collection chamber, thereby achieving the effect of stably storing and collecting exhaust gas.
[0011] 3. By loosening the pull plate, the restoring force generated by the sleeve spring drives the movable collar and makes the insertion roller contact the top plate. The sleeve spring drives the insertion roller to apply a pressing force to the top plate, quickly fixing the suction fan outside the exhaust gas collection cylinder, thereby achieving a stable exhaust gas collection effect. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of the waste gas collection cylinder of this utility model;
[0013] Figure 2 This is a schematic diagram of the structure of the suction fan of this utility model after it has moved downwards;
[0014] Figure 3 This is a cross-sectional view of the exhaust gas collection cylinder of this utility model;
[0015] Figure 4 This is a partial cross-sectional view of the rear side of the exhaust gas collection cylinder of this utility model;
[0016] Figure 5 This is a schematic diagram of the structure of the intake fan of this utility model;
[0017] Figure 6 This is a partial bottom view of the intake fan structure of this utility model;
[0018] Figure 7 This is a schematic diagram of the structure of the airtight door of this utility model.
[0019] Among them: 10. Exhaust gas collection cylinder; 11. Air nozzle connector; 12. Exhaust gas collection chamber; 13. Air inlet slot; 14. Airtight door; 15. Shrinkage slot; 16. Suction fan; 17. Outer plate; 18. Top plate; 19. Leakage slot; 20. Side beam plate; 21. Pull plate; 22. Circular slot; 23. Movable collar; 24. Insert roller; 25. Spring; 26. Side slot; 30. Mounting slot; 31. Mounting base; 32. Vertical spring. Detailed Implementation
[0020] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this utility model. Unless otherwise specified, the experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified.
[0021] Example: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 7 As shown, a vehicle exhaust gas sampling device includes an exhaust gas collection cylinder 10, a gas nozzle connector 11, and an intake fan 16. The exhaust gas collection cylinder 10 has a concave groove on its exterior and several exhaust gas collection chambers 12 inside, used to store the detection gas. The intake fan 16 is slidably connected to the groove on the exterior of the exhaust gas collection cylinder 10. A battery pack is connected to the exterior of the intake fan 16 via wires. The battery pack is fixed to the exterior of the intake fan 16 and provides power to the intake fan 16. The exterior of 10 has an air inlet slot 13 corresponding to the number of exhaust gas collection chambers 12. The interior of the air inlet slot 13 has a contraction slot 15. The interior of the contraction slot 15 is slidably connected to an airtight door 14. The airtight door 14 is used to seal the interior of the exhaust gas collection chamber 12. An outer plate 17 is fixedly connected to the exterior of the airtight door 14. A top plate 18 is fixedly connected to the exterior of the outer plate 17. The top plate 18 is located above the exterior of the airtight door 14. The side of the intake fan 16 near the air inlet slot 13 has a slot 19 with the same width as the outer plate 17.
[0022] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, a quick-locking assembly is provided on the side of the intake fan 16 near the air inlet 13. The quick-locking assembly includes an insert roller 24, which moves to allow the intake fan 16 to pass through and extend into the interior of the air inlet 13. The insert roller 24 is positioned above the outer plate 17. The quick-locking assembly also includes two side slots 26, which are respectively opened on both sides of the exterior of the exhaust gas collection cylinder 10. A side beam plate 20 is slidably connected inside each insert roller 24. The side beam plate 20 is an L-shaped plate, and the two opposing sides of the two side beam plates 20 are respectively fixedly connected to the exterior of the intake fan 16. The intake fan 16 passes through the two side beam plates 20 in the exhaust gas collection cylinder 10. The external stable upward or downward movement, the quick locking assembly also includes a circular slot 22, which is opened inside the intake fan 16 and located outside the insertion roller 24. A movable collar 23 is movably connected inside the circular slot 22. The movable collar 23 is fixedly sleeved on the outside of the insertion roller 24. A spring 25 is fixedly connected to the outside of the movable collar 23. The end of the spring 25 away from the movable collar 23 is fixedly connected to the inside of the circular slot 22. A pull plate 21 is fixedly connected to the outside of the insertion roller 24. The pull plate 21 is located outside the intake fan 16. The pull plate 21 is used to limit the insertion roller 24 to prevent the insertion roller 24 from retracting into the air inlet slot 13.
[0023] The exhaust gas generated by the vehicle is collected by activating the intake fan 16. The exhaust gas collected by the intake fan 16 is poured into the exhaust gas collection chamber 12 for storage. When it is necessary to sample and store exhaust gas in batches, the pull plate 21 is pulled away from the exhaust gas collection cylinder 10. The pull plate 21 drives the movable collar 23 and compresses the spring 25 inside the circular groove 22. At this time, the end of the insertion roller 24 near the exhaust gas collection cylinder 10 moves above the outer plate 17, causing the intake fan 16 to drive the side beams 20 on both sides to move downward inside the side groove 26. The fan 16 moves downwards and its opening 19 passes through the outer panel 17. As it moves, the suction fan 16 drives the insertion roller 24 to move downwards and contact the lower outer panel 17. The insertion roller 24 presses the outer panel 17 downwards and drives the air seal door 14 downwards into the interior of the contraction slot 15. The air seal door 14 moves downwards, driving the mounting base 31 and compressing the vertical spring 32. After the air seal door 14 contracts and enters the interior of the contraction slot 15, the exhaust gas collection chamber 12 is connected to the outside through the air intake slot 13. At this time, the exhaust gas generated by the motor vehicle can be collected again by starting the suction fan 16.
[0024] By releasing the pull plate 21, the reset force generated by the sleeve spring 25 drives the movable collar 23 and makes the insertion roller 24 contact the top plate 18. The sleeve spring 25 drives the insertion roller 24 to apply a pressing force to the top plate 18, thereby quickly fixing the suction fan 16 outside the exhaust gas collection cylinder 10, thus achieving the effect of stable exhaust gas collection.
[0025] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a pressure-blocking assembly is provided inside the contraction slot 15. The pressure-blocking assembly includes several vertical springs 32, which are movably connected inside the contraction slot 15 and positioned below the outside of the airtight door 14. The vertical springs 32 provide an upward elastic force to the airtight door 14, which seals the interior of the exhaust gas collection chamber 12. A mounting base 31 is fixedly connected to the outside of the several vertical springs 32. The mounting base 31 is a convex plate. An installation slot 30 is provided on the side of the airtight door 14 near the mounting base 31. The mounting base 31 is movably engaged inside the installation slot 30. The engagement between the installation slot 30 and the mounting base 31 ensures the stability of the airtight door 14 as it moves upward or downward inside the contraction slot 15.
[0026] Working principle:
[0027] In use: First, the exhaust gas generated by the vehicle is collected by starting the intake fan 16. The exhaust gas collected by the intake fan 16 is poured into the exhaust gas collection chamber 12 for storage. When it is necessary to sample and store exhaust gas in batches, the pull plate 21 is pulled away from the exhaust gas collection cylinder 10. The pull plate 21 drives the movable collar 23 and compresses the spring 25 inside the circular groove 22. At this time, the end of the insertion roller 24 near the exhaust gas collection cylinder 10 moves to the top of the outer plate 17, and the intake fan 16 drives the side beams 20 on both sides in the side groove. The inside of the inlet 26 moves downward, and the intake fan 16 moves downward while driving the insertion roller 24 to contact the outer plate 17 below. The insertion roller 24 presses the outer plate 17 downward and drives the air seal door 14 downward into the inside of the contraction slot 15. The air seal door 14 moves downward, driving the mounting base 31 and compressing the vertical spring 32. After the air seal door 14 contracts and enters the inside of the contraction slot 15, the inside of the exhaust gas collection chamber 12 is connected to the outside through the air inlet slot 13. At this time, the exhaust gas generated by the motor vehicle can be collected again by starting the intake fan 16.
[0028] In the second step, by loosening the pull plate 21, the reset force generated by the sleeve spring 25 drives the movable collar 23 and makes the insertion roller 24 contact the top plate 18. The sleeve spring 25 drives the insertion roller 24 to apply a pressing force to the top plate 18, and quickly fixes the suction fan 16 outside the exhaust gas collection cylinder 10, thereby achieving the effect of stable exhaust gas collection.
[0029] Third, by pulling the pull plate 21 away from the exhaust gas collection cylinder 10, the insertion roller 24 is separated from the top plate 18. At this time, the elastic force generated by the vertical spring 32 drives the mounting base 31 and moves the air-sealed door 14 upward. The upward movement of the air-sealed door 14 closes the inside of the air inlet slot 13 and seals the inside of the exhaust gas collection chamber 12, thereby achieving the effect of stably storing and collecting exhaust gas.
[0030] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.
Claims
1. A motor vehicle exhaust gas sampling device, comprising an exhaust gas collection cylinder (10), a gas nozzle connector (11), and an intake fan (16), wherein the exhaust gas collection cylinder (10) has a concave groove on its exterior and a plurality of exhaust gas collection chambers (12) are provided inside the exhaust gas collection cylinder (10), the exhaust gas collection chambers (12) being used to store the detection gas, and the intake fan (16) is slidably connected inside the groove on the exterior of the exhaust gas collection cylinder (10), characterized in that, The exhaust gas collection cylinder (10) has an air inlet slot (13) on its outside corresponding to the number of exhaust gas collection chambers (12). The air inlet slot (13) has a contraction slot (15) inside. The contraction slot (15) is slidably connected to an airtight door (14). An outer plate (17) is fixedly connected to the outside of the airtight door (14). A top plate (18) is fixedly connected to the outside of the outer plate (17). The suction fan (16) has a slot (19) with the same width as the outer plate (17) on one side near the air inlet slot (13). A quick-locking assembly is provided on one side of the suction fan (16) near the air inlet slot (13). The quick-locking assembly includes a roller (24) that moves to pass through and extend the intake fan (16) into the interior of the air inlet slot (13). The roller (24) is positioned above the outer panel (17).
2. An apparatus for sampling exhaust gas of a motor vehicle according to claim 1, wherein The quick-locking assembly also includes two side slots (26), which are respectively opened on both sides of the outside of the exhaust gas collection cylinder (10). Each insert roller (24) is slidably connected to a side beam plate (20). The side beam plate (20) is an L-shaped plate. The two side beam plates (20) are fixedly connected to the two sides of the outside of the suction fan (16) on opposite sides. The suction fan (16) moves stably upward or downward outside the exhaust gas collection cylinder (10) through the two side beam plates (20).
3. The apparatus of claim 1, wherein the apparatus further comprises a motorized device for moving the sampling probe. The quick-locking assembly also includes a circular slot (22), which is opened inside the intake fan (16) and located outside the insertion roller (24). A movable collar (23) is movably connected inside the circular slot (22), and the movable collar (23) is fixedly sleeved on the outside of the insertion roller (24). A spring (25) is fixedly connected to the outside of the movable collar (23), and one end of the spring (25) away from the movable collar (23) is fixedly connected inside the circular slot (22).
4. An exhaust sampling device for a motor vehicle as set forth in claim 3 wherein, The insertion roller (24) is fixedly connected to a pull plate (21), which is located outside the suction fan (16).
5. The apparatus of claim 1, wherein, The shrinkage slot (15) is provided with a pressure-blocking component, which includes several vertical springs (32). The several vertical springs (32) are movably connected inside the shrinkage slot (15), and the vertical springs (32) are located below the outside of the airtight door (14). The vertical springs (32) are used to provide an upward elastic force to the airtight door (14). The elastic force provided by the vertical springs (32) to the airtight door (14) causes it to seal the inside of the exhaust gas collection chamber (12).
6. An exhaust sampling device for a motor vehicle as claimed in claim 5, wherein A mounting base (31) is fixedly connected to the outside of several vertical springs (32). The mounting base (31) is a convex plate. An installation slot (30) is opened on the side of the airtight door (14) near the mounting base (31). The mounting base (31) is movably engaged inside the installation slot (30).