Motor vehicle exhaust particulate matter collection device and motor vehicle

Abstract

This utility model discloses a vehicle exhaust particulate matter collection device and a vehicle. The device includes an exhaust mechanism, a filter collection mechanism, and an anti-clogging mechanism. The exhaust mechanism is detachably connected to the vehicle's exhaust pipe and has an inner cavity for communicating with the exhaust pipe. The filter collection mechanism is detachably installed in the inner cavity of the exhaust mechanism and filters the exhaust gas emitted from the exhaust pipe, intercepting and collecting the particulate matter contained in the exhaust gas. The anti-clogging mechanism is installed on the filter collection mechanism and vibrates the filter collection mechanism to prevent particulate matter from clogging it. This utility model has a simple structure, is easy to disassemble and maintain, prevents particulate matter accumulation and clogging, avoids affecting the emission of filtered gas, enables long-term collection of particulate matter and can obtain a large number of particulate matter samples, effectively improving collection efficiency and device durability.

Description

Technical Field

[0001] This utility model relates to the field of industrial sample analysis technology, and in particular, to a vehicle exhaust particulate matter collection device. Furthermore, it also relates to a vehicle including the vehicle exhaust particulate matter collection device. Background Technology

[0002] Vehicle exhaust is a major source of air pollution, containing carbon monoxide, nitrogen oxides, and other particulate matter. These particles pose a significant threat to human health, causing respiratory illnesses, conjunctivitis, neurasthenia, and other serious health problems. Therefore, controlling vehicle exhaust pollution is urgently needed.

[0003] Currently, exhaust particulate matter collection devices are typically installed on the exhaust pipes of motor vehicles to filter particulate matter in the exhaust gases, thereby reducing the amount of pollutants emitted into the atmosphere and improving air quality. Simultaneously, the devices intercept and collect particulate matter from the exhaust gases to obtain raw particulate matter samples for testing and research, thus controlling exhaust pollution. For example, Chinese Patent Publication No. CN208968881U discloses a motor vehicle exhaust particulate matter collection device, including a connecting outer cylinder detachably connected to the exhaust pipe. A filter assembly is detachably connected to the connecting outer cylinder, and the filter assembly is spaced relative to the exhaust nozzle of the exhaust pipe to filter the exhaust gas emitted from the nozzle, intercepting and collecting particulate matter contained in the exhaust gas as it is emitted. This patent can directly collect particulate matter contained in the exhaust gas emitted from the exhaust pipe nozzle, directly obtaining raw particulate matter samples from the exhaust gas, maximizing the originality of the particulate matter samples. However, the filter components of this device will become clogged after prolonged use, which not only affects the emission of gases in motor vehicle exhaust, but also reduces the amount of particulate matter samples obtained. This has a certain impact on experimental research on exhaust particulate matter and fails to meet the requirements of researchers to obtain original samples for a long period of time, thus hindering the progress and innovation of exhaust-related science and technology to some extent. Utility Model Content

[0004] This invention provides a vehicle exhaust particulate matter collection device to solve the technical problem in the prior art that the filter of vehicle exhaust particulate matter is prone to clogging and cannot perform long-term sampling to obtain a large number of original particulate matter samples.

[0005] According to one aspect of the present invention, a vehicle exhaust particulate matter collection device is provided, comprising:

[0006] An exhaust system for detachably connecting to the exhaust pipe of a motor vehicle, the exhaust system having an internal cavity for communicating with the exhaust pipe;

[0007] The filter collection mechanism is detachably installed in the inner cavity of the exhaust mechanism. The filter collection mechanism is used to filter the exhaust gas ejected from the exhaust pipe and to intercept and collect the particulate matter contained in the exhaust gas.

[0008] The anti-clogging mechanism is installed on the filter collection mechanism. The anti-clogging mechanism is used to vibrate the filter collection mechanism and prevent particulate matter from clogging it.

[0009] Furthermore, the vehicle exhaust particulate matter collection device also includes an elastic ring, which is used to be sleeved on the outside of the filter collection mechanism and abut against the inner wall of the exhaust mechanism to press the filter collection mechanism radially.

[0010] Furthermore, the exhaust mechanism includes a first exhaust pipe, a second exhaust pipe and a third exhaust pipe arranged sequentially along the axial direction. The first exhaust pipe is used to be sleeved on the outside of the exhaust pipe and detachably connected to the exhaust pipe. The second exhaust pipe is detachably connected to the first exhaust pipe and the third exhaust pipe.

[0011] The filter collection mechanism is installed inside the second and / or third exhaust pipes.

[0012] Furthermore, the first exhaust pipe includes a first connecting cylinder for being sleeved on the outside of the exhaust pipe, a fastener for fastening the first connecting cylinder to the exhaust pipe, and a second connecting cylinder for being detachably connected to the second exhaust pipe, wherein the first connecting cylinder and the second connecting cylinder are integrally formed.

[0013] Fasteners are inserted through the side wall of the first connecting cylinder and threadedly connected to the first connecting cylinder. Multiple fasteners are provided at intervals along the circumference of the first connecting cylinder.

[0014] Furthermore, the filtration and collection mechanism includes a filter assembly and an anti-backflow shroud pressed axially onto the filter assembly. The diameter of the anti-backflow shroud gradually decreases in the direction away from the filter assembly and is cone-shaped.

[0015] The constricted end of the anti-backflow shroud is located near the air inlet end of the exhaust mechanism and is engaged with the exhaust mechanism axially, while the filter assembly is pressed against the inner wall of the exhaust mechanism radially.

[0016] Furthermore, the filter assembly includes a placement plate and a support mesh, a filter membrane, and a pressure ring arranged sequentially along the axial direction within the placement plate. The filter membrane is used to filter the exhaust gas and intercept and collect the particulate matter contained in the exhaust gas. The support mesh is used to support the filter membrane. The pressure ring is used to abut against the end face of the flared end of the anti-backflow shroud and press the periphery of the filter membrane and the support mesh into the placement plate.

[0017] The outer diameter of the placement plate is smaller than the inner diameter of the exhaust mechanism.

[0018] Furthermore, the anti-clogging mechanism includes a vibrating element located at the outlet end of the filter assembly. The vibrating element is mounted on the filter assembly and is used to vibrate the filter assembly and / or the anti-backflow cover.

[0019] Furthermore, the anti-clogging mechanism also includes a negative pressure fan component located at the outlet end of the filter assembly. The negative pressure fan component is mounted on the vibrating component and / or the filter assembly and is used to generate negative pressure in the inner cavity of the exhaust mechanism to adsorb particulate matter onto the filter assembly.

[0020] Furthermore, a sealing ring is provided on the inner wall of the second exhaust pipe to seal the outer periphery of the filter collection mechanism;

[0021] The inner wall of the sealing ring is provided with a first limiting protrusion, which is used to engage axially with the constricted end of the anti-backflow cover.

[0022] According to another aspect of the present invention, a motor vehicle is also provided, including a motor vehicle exhaust particulate matter collection device.

[0023] This utility model has the following beneficial effects:

[0024] This utility model discloses a motor vehicle exhaust particulate matter collection device. By detachably connecting the exhaust mechanism directly to the vehicle's exhaust pipe and providing an internal cavity for communication with the exhaust pipe, it can adapt to different vehicle models and exhaust pipe structures of varying diameters, greatly expanding its applicability. By placing the filter collection mechanism within the exhaust mechanism's internal cavity, it can effectively filter the exhaust gas emitted by the vehicle, reducing the content of particulate pollutants released into the atmosphere and improving air quality. Simultaneously, it can collect intercepted particulate matter to obtain raw samples for experimental research on exhaust pollution, ensuring the accuracy and reliability of the research data. By installing an anti-clogging mechanism on the filter collection mechanism, vibration is applied to prevent the accumulation of intercepted particulate matter and blockage, thus avoiding interference with the emission of filtered gas. This allows for longer-term particulate matter collection and the acquisition of more particulate matter samples, effectively improving collection efficiency and device durability, making it suitable for long-term filtration and collection of motor vehicle exhaust pollution. The device adopts a detachable structure, facilitating easy installation and disassembly, quick replacement or cleaning, and reducing maintenance costs.

[0025] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description

[0026] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0027] Figure 1 This is a schematic diagram of the structure of a motor vehicle exhaust particulate matter collection device according to a preferred embodiment of the present invention;

[0028] Figure 2 This is an exploded view of a preferred embodiment of the motor vehicle exhaust particulate matter collection device of this utility model;

[0029] Figure 3 This is a schematic diagram of the filter collection mechanism of the motor vehicle exhaust particulate matter collection device according to a preferred embodiment of the present invention;

[0030] Figure 4 This is a schematic diagram of the structure of the second exhaust pipe of the motor vehicle exhaust particulate matter collection device according to a preferred embodiment of this utility model.

[0031] Legend:

[0032] 100. Exhaust mechanism; 101. First exhaust pipe; 1011. First connecting cylinder; 1012. Second connecting cylinder; 1013. Fastener; 102. Second exhaust pipe; 1021. Sealing ring; 1022. First limiting protrusion; 103. Third exhaust pipe; 200. Filter collection mechanism; 201. Filter assembly; 2011. Placement tray; 2012. Support mesh pad; 2013. Filter membrane; 2014. Pressure ring; 202. Anti-backflow cover; 300. Anti-clogging mechanism; 301. Vibrating component; 302. Negative pressure fan component; 400. Elastic ring. Detailed Implementation

[0033] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered below.

[0034] like Figure 1 and Figure 2 As shown, the vehicle exhaust particulate matter collection device of this embodiment includes an exhaust mechanism 100, a filter collection mechanism 200, and an anti-clogging mechanism 300. The exhaust mechanism 100 is detachably connected to the exhaust pipe of a vehicle and has an inner cavity for communicating with the exhaust pipe. Therefore, the air intake end of the exhaust mechanism 100 can be adapted to exhaust pipe structures of different vehicle models and diameters, greatly improving its applicability. The filter collection mechanism 200 is located in the inner cavity of the exhaust mechanism 100 and is detachably installed on the exhaust mechanism 100. The filter collection mechanism 200 is used to filter the exhaust gas emitted from the exhaust pipe and intercept and collect the particulate matter contained in the exhaust gas. Thus, the filter collection mechanism 200 can effectively filter the exhaust gas emitted by the vehicle, reducing the content of particulate pollutants emitted into the atmosphere and improving air quality. Simultaneously, it can collect the intercepted particulate matter to obtain raw samples for experimental research on exhaust gas pollution, ensuring the accuracy and reliability of the research data.

[0035] An anti-clogging mechanism 300 is located within the exhaust mechanism 100 and mounted on the filter collection mechanism 200. The anti-clogging mechanism 300 vibrates the filter collection mechanism 200 and prevents particulate matter from clogging it. Thus, by vibrating the filter collection mechanism 200, the accumulation of intercepted particulate matter can be prevented from causing blockage, avoiding impact on the emission of filtered gas. This allows for longer-term particulate matter collection and the acquisition of more particulate matter samples, effectively improving collection efficiency and device durability. Compared to existing technologies, it eliminates the need for frequent shutdowns for cleaning and is suitable for long-term continuous filtration and collection of vehicle exhaust pollution.

[0036] like Figure 1 and Figure 2 As shown, the vehicle exhaust particulate matter collection device also includes an elastic ring 400. The elastic ring 400 is sleeved on the outside of the filter collection mechanism 200 and abuts against the inner wall of the exhaust mechanism 100. Preferably, the elastic ring 400 is fixed to the outer wall of the filter collection mechanism 200; alternatively, the elastic ring 400 can also be fixed to the inner wall of the exhaust mechanism 100. On the one hand, there may be certain errors in the structure and design of the exhaust mechanism 100 and the filter collection mechanism 200. When the filter collection mechanism 200 passes through the inner cavity of the exhaust mechanism 100, by sleeved between the exhaust mechanism 100 and the filter collection mechanism 200, the radial assembly error between the two can be eliminated, so that the filter collection mechanism 200 abuts against the inner wall of the exhaust mechanism 100 through the elastic force of the elastic ring 400, ensuring that the exhaust mechanism 100 and the filter collection mechanism 200 are radially assembled stably and reliably. The elastic ring 400 can also axially engage with the exhaust mechanism 100, pressing the filter collection mechanism 200 axially toward the intake end of the exhaust mechanism 100 within the inner cavity of the exhaust mechanism 100. This ensures reliable axial assembly between the filter mechanism and the exhaust mechanism 100. The elastic ring 400 also increases the friction between the exhaust mechanism 100 and the filter collection mechanism 200, further improving the stability of the assembly. On the other hand, the elastic ring 400 can seal between the filter collection mechanism 200 and the exhaust mechanism 100, preventing gaps between them and preventing unfiltered vehicle exhaust from leaking into the atmosphere, thus avoiding air pollution. This ensures that exhaust gases are only filtered by the filter collection mechanism 200 before being released into the outside atmosphere, improving air quality. Simultaneously, it ensures effective interception and collection of particulate matter contained in the exhaust gases, improving collection efficiency. In addition, the exhaust mechanism 100 and the filter collection mechanism 200 can be elastically matched through the elastic ring 400, so that while the anti-clogging mechanism 300 vibrates the filter collection mechanism 200, the filter collection mechanism 200 can elastically shake, effectively increasing the vibration amplitude and improving the anti-clogging effect.

[0037] like Figure 1 and Figure 2 As shown, the exhaust mechanism 100 includes a first exhaust pipe 101, a second exhaust pipe 102, and a third exhaust pipe 103 arranged sequentially along the axial direction. The first exhaust pipe 101, the second exhaust pipe 102, and the third exhaust pipe 103 are detachably connected to form an integral structure. The diameter of the first end of the first exhaust pipe 101 is adapted to the diameter of the vehicle's exhaust pipe, so as to be fitted onto the outside of the exhaust pipe. The diameters of the second end of the first exhaust pipe 101 and the third exhaust pipe 103 are both smaller than the diameter of the second exhaust pipe 102, so as to facilitate threaded connection between the third exhaust pipe 103 and the second exhaust pipe 102. By setting the exhaust mechanism 100 as a split structure including the first exhaust pipe 101, the second exhaust pipe 102, and the third exhaust pipe 103, it is easy to install and disassemble, and facilitates the replacement and maintenance of the filter collection mechanism 200 in the inner cavity of the exhaust mechanism 100. Preferably, the first exhaust pipe 101, the second exhaust pipe 102, and the third exhaust pipe 103 are all made of lightweight aluminum alloy.

[0038] Specifically, such as Figure 1 and Figure 2As shown, the first exhaust pipe 101 includes a first connecting cylinder 1011 and a second connecting cylinder 1012 arranged axially, and fasteners 1013 detachably mounted on the side wall of the first connecting cylinder 1011. The first connecting cylinder 1011 and the second connecting hole are fixedly connected, so that the first exhaust pipe 101 forms an integral structure. Multiple fasteners 1013 are provided at intervals along the circumference of the first connecting cylinder 1011. The diameter of the first connecting cylinder 1011 is adapted to the diameter of the vehicle exhaust pipe so as to be sleeved on the outside of the exhaust pipe. The side wall of the first connecting cylinder 1011 is provided with fastening holes for the fasteners 1013 to pass through. Preferably, the fasteners 1013 are bolts, and the fastening holes are threaded holes. Thus, by inserting the bolt into the threaded hole and tightening the bolt to make it abut against the outer wall of the exhaust pipe, the first connecting cylinder 1011 can be fastened to the exhaust pipe. The outer wall of the second connecting cylinder 1012 is provided with a first external thread, and the outer wall of the third exhaust pipe 103 is provided with a second external thread. The second exhaust pipe 102 is a hollow cylindrical structure. The first end of the second exhaust pipe 102 is provided with a first internal thread that is threaded to the first external thread, and the second end of the second exhaust pipe 102 is provided with a second internal thread that is threaded to the second external thread. A limiting ring is provided on the outside of the second connecting cylinder 1012. The limiting ring is located between the first external thread and the first connecting cylinder 1011 to axially limit the second exhaust pipe 102, so that after the second exhaust pipe 102 is threadedly connected to the second connecting cylinder 1012, it is pressed against the limiting ring. Preferably, the diameter of the second connecting cylinder 1012 is larger than the diameter of the first connecting cylinder 1011, so that the diameter of the inner cavity of the exhaust mechanism 100 is larger than the diameter of the tailpipe, ensuring smooth exhaust of the tailpipe and improving the collection efficiency of the filter collection mechanism 200.

[0039] The filter collection mechanism 200 is axially inserted into the second exhaust pipe 102. The first end of the filter collection mechanism 200 is axially limited by a snap-fit ​​connection with the second exhaust pipe 102. The second end of the filter collection mechanism 200 is positioned close to the third exhaust pipe 103, which is inserted outside the filter collection mechanism 200. An elastic ring 400 is located between the third exhaust pipe 103 and the filter collection mechanism 200. By controlling the threaded rotation of the third exhaust pipe 103 toward the interior of the first exhaust pipe 101, the filter collection mechanism 200 can be compressed and pressed tightly into the second exhaust pipe 102.

[0040] like Figure 1 , Figure 2 and Figure 3As shown, the filtration and collection mechanism 200 includes a filter assembly 201 and an anti-backflow hood 202. The filter assembly 201 is used to filter the exhaust gas by intercepting polluting particulate matter contained in the exhaust gas, preventing the exhaust gas from being directly discharged into the atmosphere and causing pollution. The particulate matter intercepted by the filter assembly 201 can also be collected for experimental research on exhaust gas pollution. The diameter of the anti-backflow hood 202 gradually decreases in diameter away from the filter assembly 201 and is cone-shaped. The constricted end of the anti-backflow hood 202 is positioned near the air inlet of the exhaust mechanism 100 and engages with the second exhaust pipe 102 for axial limiting. The flared end of the anti-backflow hood 202 is pressed axially onto the filter assembly 201. The filter assembly 201 is pressed against the inner wall of the second exhaust pipe 102 by the cooperation of the third exhaust pipe 103 and the elastic ring 400. Therefore, the inner wall of the conical anti-backflow shroud 202 has a certain slope, which not only prevents the particles intercepted on the filter assembly 201 from flowing back into the exhaust pipe, but also allows the particles on the anti-backflow shroud 202 to fall onto the filter assembly 201 through the guidance of the inner wall of the anti-backflow shroud 202 and their own gravity, thereby improving the particle collection efficiency of the filter assembly 201.

[0041] like Figure 2 and Figure 3 As shown, the filter assembly 201 includes a placement tray 2011 and a support mesh pad 2012, a filter membrane 2013, and a pressure ring 2014 arranged sequentially along the axial direction within the placement tray 2011. The filter membrane 2013 is used to filter exhaust gas and intercept and collect particulate matter contained in the exhaust gas. Specifically, the placement tray 2011 includes a limiting ring and a support frame installed on the inner wall of the limiting ring. The inner diameter of the limiting ring is adapted to the outer diameter of the support mesh pad 2012, the filter membrane 2013, and the pressure ring 2014. The limiting ring can radially limit the support mesh pad 2012, the filter membrane 2013, and the pressure ring 2014, and the support frame can axially support the support mesh pad 2012, the filter membrane 2013, and the pressure ring 2014. The pressure ring 2014 is pressed onto the periphery of the filter membrane 2013, and the outer diameter of the pressure ring 2014 is adapted to the outer diameter of the flared end of the anti-backflow cover 202. Thus, the flared end of the anti-backflow cover 202 can be axially inserted into the limiting ring, pressing the pressure ring 2014, filter membrane 2013, and support mesh 2012 axially onto the support frame, achieving a stable press-fit of the filter membrane 2013 within the placement tray 2011. Preferably, the filter membrane 2013 is a paper-based glass fiber filter membrane.

[0042] The outer diameter of the limiting ring of the placement tray 2011 is smaller than the inner diameter of the third exhaust pipe 103, so that the third exhaust pipe 103 can be fitted onto the outside of the placement tray 2011. The elastic ring 400 is inserted between the limiting ring and the third exhaust pipe 103, and then the filter assembly 201 can be press-fitted into the exhaust mechanism 100 by controlling the third exhaust pipe 103 to be screwed toward the inside of the second exhaust pipe 102.

[0043] The outer diameter of the support mesh pad 2012 is adapted to the outer diameter of the filter membrane 2013. The support mesh pad 2012 includes a support mesh and a lower protective pad surrounding the support mesh. The support mesh provides uniform support to the filter membrane 2013, preventing damage to the filter membrane 2013. The lower protective pad protects the periphery of the end face of the filter membrane 2013 near the placement tray 2011. An upper protective pad is provided on the end face of the pressure ring 2014 facing the filter membrane 2013 to protect the periphery of the end face of the filter membrane 2013 away from the placement tray 2011. Therefore, when the pressure ring 2014, filter membrane 2013, and support mesh pad 2012 are pressed into the placement tray 2011 at the flared end of the anti-backflow shroud 202, the upper and lower protective pads protect the periphery of the filter membrane 2013, preventing stress damage to the filter membrane 2013 caused by the anti-backflow shroud 202. Preferably, both the lower protective ring gasket and the upper protective gasket are made of asbestos.

[0044] like Figure 1 , Figure 2 and Figure 3 As shown, the anti-clogging mechanism 300 includes a vibrating element 301. The vibrating element 301 is located at the air outlet end of the filter assembly 201 and installed on the filter assembly 201. The vibrating element 301 is used to vibrate the filter collection mechanism 200 to prevent particulate matter from accumulating and causing blockage. Specifically, the vibrating element 301 is located on the side of the placement tray 2011 away from the filter membrane 2013 and is installed on the support frame. The vibrating element 301 shakes the particulate matter adhering to the surface of the filter membrane 2013 through high-frequency vibration, avoiding the particulate matter from clogging the filter membrane pores and affecting the emission of filtered gas and the amount of particulate matter collected. This increases the service life of the filter membrane 2013, enabling longer-term collection of particulate matter and obtaining more particulate matter samples, effectively improving the collection efficiency and amount of particulate matter samples. Preferably, the vibrating element 301 is a small vibrator.

[0045] like Figure 1 , Figure 2 and Figure 3 As shown, the anti-clogging mechanism 300 also includes a negative pressure fan component 302, which is located at the air outlet of the filter assembly 201 and mounted on the vibrating component 301. Optionally, the negative pressure fan component 302 can also be directly mounted on the support frame. The negative pressure fan component 302 includes a fan and a drive component for driving the fan to rotate. Preferably, the drive component is a small motor. The fan rotates under the drive of the drive component, so that the exhaust mechanism 100 forms a negative pressure zone in the cavity between the fan and the exhaust pipe. The negative pressure causes the particulate matter to move towards the filter membrane 2013, further improving the particulate matter collection efficiency and preventing particulate matter from adhering to the inner wall of the exhaust mechanism 100 and / or the inner wall of the anti-backflow shroud 202.

[0046] like Figure 2 and Figure 4As shown, a sealing ring 1021 is provided on the inner wall of the second exhaust pipe 102. The sealing ring 1021 is located between the first internal thread and the second internal thread. The inner diameter of the sealing ring 1021 is adapted to the outer diameter of the constricted end of the anti-backflow shroud 202. Thus, by sealing the outer wall of the anti-backflow shroud 202 with the sealing ring 1021, a gap is prevented between the anti-backflow shroud 202 and the second exhaust pipe 102. This ensures that the exhaust gas can only pass through the interior of the anti-backflow shroud 202, be filtered by the filter assembly 201, and then discharged into the atmosphere, thereby improving the particulate matter collection efficiency and reducing air pollution. Optionally, the sealing ring 1021 can also be placed on the end face of the constricted end of the anti-backflow shroud 202 and sealed with the end face of the anti-backflow shroud 202 to achieve a seal on the outer wall of the anti-backflow shroud 202.

[0047] Preferably, the inner wall of the sealing ring 1021 is provided with a first limiting protrusion 1022 in the radial direction, and the constricted end of the anti-backflow cover 202 is provided with a groove in the axial direction. By engaging the first limiting protrusion 1022 of the sealing ring 1021 in the groove of the anti-backflow cover 202, the constricted end of the anti-backflow cover 202 can be pressed onto the sealing ring 1021 in the axial direction, so as to achieve axial limiting of the first end of the filter collection mechanism 200 and prevent the first end of the filter collection mechanism 200 from coming out of the air inlet end of the exhaust mechanism 100. Preferably, the bottom of the groove of the anti-backflow cover 202 is also provided with a limiting groove. The limiting groove is arranged along the circumference of the anti-backflow cover 202 and communicates with the groove. The groove opening size of the limiting groove is adapted to the thickness of the first limiting protrusion 1022 of the sealing ring 1021, so that after the first limiting protrusion 1022 of the sealing ring 1021 is engaged in the groove of the anti-backflow cover 202, the anti-backflow cover 202 can be rotated to rotate the first limiting protrusion 1022 of the sealing ring 1021 into the limiting groove of the anti-backflow cover 202. Thus, through the engaging cooperation between the first limiting protrusion 1022 and the limiting groove, the stability of the connection between the filter collection mechanism 200 and the exhaust mechanism 100 can be further enhanced.

[0048] Preferably, the inner wall of the third exhaust pipe 103 is provided with a second limiting protrusion in the radial direction. The second limiting protrusion provides axial support to the placement plate 2011 of the filter assembly 201 to achieve axial limiting of the second end of the filter collection mechanism 200, preventing the filter collection mechanism 200 from coming out of the exhaust end of the exhaust mechanism 100 and ensuring the stability of the filter collection mechanism 200 installed in the inner cavity of the exhaust mechanism 100.

[0049] Preferably, the end of the third exhaust pipe 103 on the side away from the second exhaust pipe 102 is inclined downward toward the second exhaust pipe 102, so that the exhaust mechanism 100 discharges exhaust gas downward, further reducing air pollution and harm to the human body.

[0050] According to another aspect of this utility model, it also includes a motor vehicle that includes the motor vehicle exhaust particulate matter collection device.

[0051] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A device for collecting particulate matter from motor vehicle exhaust, characterized in that, include: An exhaust mechanism (100) for detachably connecting to the exhaust pipe of a motor vehicle, the exhaust mechanism (100) having an inner cavity for communicating with the exhaust pipe; A filter collection mechanism (200) is detachably installed in the inner cavity of the exhaust mechanism (100). The filter collection mechanism (200) is used to filter the exhaust gas ejected from the exhaust pipe and to intercept and collect the particulate matter contained in the exhaust gas. An anti-clogging mechanism (300) is installed on the filter collection mechanism (200). The anti-clogging mechanism (300) is used to vibrate the filter collection mechanism (200) and prevent particulate matter from clogging the filter collection mechanism (200).

2. The motor vehicle exhaust particulate matter collection device according to claim 1, characterized in that, The motor vehicle exhaust particulate matter collection device further includes an elastic ring (400), which is used to be sleeved on the outside of the filter collection mechanism (200) and abut against the inner wall of the exhaust mechanism (100) to press the filter collection mechanism (200) radially.

3. The motor vehicle exhaust particulate matter collection device according to claim 1, characterized in that, The exhaust mechanism (100) includes a first exhaust pipe (101), a second exhaust pipe (102) and a third exhaust pipe (103) arranged sequentially along the axial direction. The first exhaust pipe (101) is used to be sleeved on the outside of the exhaust pipe and detachably connected to the exhaust pipe. The second exhaust pipe (102) is detachably connected to the first exhaust pipe (101) and the third exhaust pipe (103). The filter collection mechanism (200) is installed in the second exhaust pipe (102) and / or the third exhaust pipe (103).

4. The motor vehicle exhaust particulate matter collection device according to claim 3, characterized in that, The first exhaust pipe (101) includes a first connecting cylinder (1011) for sleeved on the outside of the exhaust pipe, a fastener (1013) for fastening the first connecting cylinder (1011) to the exhaust pipe, and a second connecting cylinder (1012) for detachably connecting to the second exhaust pipe (102). The first connecting cylinder (1011) and the second connecting cylinder (1012) are integrally formed. The fastener (1013) passes through the side wall of the first connecting cylinder (1011) and is threadedly connected to the first connecting cylinder (1011). Multiple fasteners (1013) are provided at intervals along the circumference of the first connecting cylinder (1011).

5. The motor vehicle exhaust particulate matter collection device according to claim 3, characterized in that, The filter collection mechanism (200) includes a filter assembly (201) and an anti-backflow hood (202) pressed axially onto the filter assembly (201). The diameter of the anti-backflow hood (202) gradually decreases and becomes conical in the direction away from the filter assembly (201). The constricted end of the anti-backflow shroud (202) is located near the air inlet end of the exhaust mechanism (100) and is engaged with the exhaust mechanism (100) axially. The filter assembly (201) is abutted against the inner wall of the exhaust mechanism (100) radially.

6. The motor vehicle exhaust particulate matter collection device according to claim 5, characterized in that, The filter assembly (201) includes a placement tray (2011) and a support mesh pad (2012), a filter membrane (2013), and a pressure ring (2014) arranged sequentially along the axial direction within the placement tray (2011). The filter membrane (2013) is used to filter exhaust gas and intercept and collect particulate matter contained in the exhaust gas. The support mesh pad (2012) is used to support the filter membrane (2013). The pressure ring (2014) is used to abut against the end face of the flared end of the anti-backflow shroud (202) and press the periphery of the filter membrane (2013) and the support mesh pad (2012) into the placement tray (2011). The outer diameter of the placement tray (2011) is smaller than the inner diameter of the exhaust mechanism (100).

7. The motor vehicle exhaust particulate matter collection device according to claim 5, characterized in that, The anti-clogging mechanism (300) includes a vibrating element (301) disposed at the air outlet end of the filter assembly (201). The vibrating element (301) is mounted on the filter assembly (201) and is used to vibrate the filter assembly (201) and / or the anti-backflow cover (202).

8. The motor vehicle exhaust particulate matter collection device according to claim 7, characterized in that, The anti-clogging mechanism (300) further includes a negative pressure fan (302) disposed at the air outlet end of the filter assembly (201). The negative pressure fan (302) is mounted on the vibrating member (301) and / or the filter assembly (201) and is used to generate negative pressure in the inner cavity of the exhaust mechanism (100) to adsorb particulate matter onto the filter assembly (201).

9. The motor vehicle exhaust particulate matter collection device according to claim 5, characterized in that, The inner wall of the second exhaust pipe (102) is provided with a sealing ring (1021) for sealing the outer periphery of the filter collection mechanism (200); The inner wall of the sealing ring (1021) is provided with a first limiting protrusion (1022), which is used to engage axially with the constricted end of the anti-backflow cover (202).

10. A motor vehicle, characterized in that, The device includes the motor vehicle exhaust particulate matter collection device as described in any one of claims 1 to 9.

Images