Automobile exhaust particulate matter treatment device

Abstract

The invention discloses an automobile exhaust particulate matter treatment device, and belongs to the field of exhaust filtering. The device comprises a mounting cover, one end of the mounting cover is communicated with an air inlet pipe, and the other end of the mounting cover is communicated with an exhaust pipe; the filter mechanism is mounted in the mounting cover, a main inner core is mounted on the filter mechanism, tail gas enters a gas inlet surface of the main inner core and flows out from the peripheral wall, it needs to be explained that the main inner core is an internal filter core of a particulate filter in the prior art, the main inner core is in a honeycomb shape, one end surface of the main inner core is a gas inlet surface and is used for the tail gas to enter, and the other end surface of the main inner core is a blocking surface; after entering the main inner core, the tail gas penetrates through a gap in the inner wall of the main inner core. Compared with the prior art, when more ash is accumulated in the main inner core, the tail gas enters the ash discharging mechanism through the switching piece, so that the ash of the main inner core is discharged, the ash is collected through the collecting mechanism, and therefore the problems that power of an engine is reduced and oil consumption is increased due to the fact that the ash of the main inner core is accumulated too much are effectively solved.

Description

Technical Field

[0001] This invention relates to the field of exhaust gas filtration, and in particular to a vehicle exhaust particulate matter treatment device. Background Technology

[0002] In automotive exhaust aftertreatment technology, particulate filters are key devices for reducing particulate emissions from diesel or gasoline engines. Their core working principle is to allow exhaust gas to pass through a honeycomb-shaped wall-flow core, where the porous walls physically intercept and capture particulate matter in the exhaust gas.

[0003] In existing technologies, after collecting a certain amount of exhaust particulate matter, the particulate filter generates high-temperature combustion of these particles to prevent clogging and extend the filter's lifespan. However, this high-temperature combustion produces non-combustible metal oxides, i.e., ash. This ash gradually accumulates inside the filter's honeycomb channels. With prolonged use, the ash cannot be removed, easily leading to filter clogging. Ash accumulation directly increases exhaust back pressure, resulting in decreased engine power, increased fuel consumption, and ultimately, a long-term impact on the vehicle's economy and reliability. Summary of the Invention

[0004] This invention provides an automotive exhaust particulate matter treatment device, which can solve the problem in the prior art where the accumulation of ash in the inner core of the particulate filter easily causes filter blockage, leading to a decrease in engine power and an increase in fuel consumption.

[0005] A vehicle exhaust particulate matter treatment device, comprising: The mounting cover has an air inlet pipe connected to one end and an exhaust pipe connected to the other end. A filter mechanism is installed inside the mounting cover. A main inner core is installed on the filter mechanism. Exhaust gas enters the air inlet surface of the main inner core and flows out from the outer peripheral wall. The ash removal mechanism is installed on the mounting cover. After the exhaust gas enters the ash removal mechanism, the particles in the exhaust gas are filtered, and the exhaust gas after the particles are filtered enters the mounting cover and enters the outer peripheral wall of the main inner core, so as to form exhaust gas containing ash that is discharged from the air inlet surface of the main inner core. The collection mechanism, installed on the mounting cover, separates the ash from the exhaust gas discharged from the main inner core air intake surface and guides it into the exhaust pipe. The switching element is installed on the mounting cover and is used to control the intake exhaust gas to enter the filtration mechanism or ash removal mechanism.

[0006] Furthermore, the filtering mechanism includes a mounting cylinder installed inside the mounting cover, with a space between the mounting cylinder and the inner wall of the mounting cover. An annular baffle is constructed along the edge of the mounting cylinder facing the air inlet pipe, and the annular baffle and the mounting cover form an air inlet cavity. The main inner core is installed inside the mounting cylinder and the air inlet surface communicates with the air inlet cavity. Multiple ventilation slots are formed in a circular array on the outer periphery of the mounting cylinder.

[0007] Furthermore, the ash removal mechanism includes a connecting cylinder constructed at the end of the mounting cylinder away from the air inlet pipe. The mounting cover has a guide pipe with one end connected to the end of the connecting cylinder. A switching component acts on the other end of the guide pipe. A secondary inner core is installed inside the connecting cylinder. The air inlet surface of the secondary inner core blocks the connection between the guide pipe and the connecting cylinder. An annular cavity is formed between the secondary inner core and the inner wall of the connecting cylinder. A through groove communicating with the mounting cylinder is opened on the inner end face of the connecting cylinder. A closing component for canceling the blockage or blocking the air groove is installed on the mounting cover.

[0008] Furthermore, the closing assembly includes a rotating collar rotatably fitted on the outer periphery of the mounting cylinder, the outer periphery of the rotating collar having an air outlet groove, and a driving component for driving the rotating collar to rotate is installed on the outside of the mounting cover.

[0009] Furthermore, the driving component includes a mounting box constructed on the outer periphery of the mounting cover, a motor is installed inside the mounting box, a drive gear is installed on the output shaft of the motor, a protruding plate is constructed on the outer periphery of the rotating collar, a through groove is opened on the mounting cover, one end of the protruding plate passes through the through groove and is located inside the mounting box and is equipped with an arc-shaped toothed plate, the arc-shaped toothed plate meshing with the drive gear.

[0010] Furthermore, one end of the mounting cover is eccentrically connected to a connecting cover, and the switching component includes a connecting pipe eccentrically connected to the connecting cover. The free end of the connecting pipe is connected to one end of the guide pipe. The air intake pipe has two branch sections, both of which are connected to the end of the connecting cover away from the mounting cover. One branch section is coaxial with the mounting cover, and the other branch section is coaxial with the connection point between the connecting pipe and the connecting cover. A sealing disc is rotatably installed inside the connecting cover. Both ends of the sealing disc are in contact with the inner end face of the connecting cover. The sealing disc rotates to seal the connection point between one of the branch sections and the connecting cover.

[0011] Furthermore, the collection mechanism includes a collection pipe connected to the mounting cover, a solenoid valve installed on the collection pipe, a dust collection component connected to the free end of the collection pipe, and the dust collection component connected to the exhaust pipe. When the exhaust gas containing ash enters the exhaust pipe through the dust collection component, the dust collection component collects the ash in the exhaust gas.

[0012] Furthermore, the dust collection component includes a cyclone separator hood connected to the free end of the collection pipe. The exhaust port of the cyclone separator hood is connected to an air outlet pipe. One end of the air outlet pipe is connected to one side of the exhaust pipe. The dust discharge port at the bottom of the cyclone separator hood is connected to a drawer-type outer box with one side open. The drawer-type outer box is connected to the outside of the mounting cover. The drawer-type outer box is detachably fitted with a dust collection box.

[0013] Furthermore, an air exchange pipe connects the two branch sections of the intake pipe.

[0014] Furthermore, the arc-shaped toothed plate is provided with an arc-shaped baffle, which always blocks the through slot when the arc-shaped toothed plate moves.

[0015] Beneficial effects: Compared with the prior art, when a large amount of ash accumulates inside the main core, the present invention uses a switching component to allow exhaust gas to enter the ash discharge mechanism, thereby discharging the ash from the main core and collecting it through a collection mechanism. This effectively reduces the problems of reduced engine power and increased fuel consumption caused by excessive ash accumulation in the main core. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 For the present invention Figure 1 Partial three-dimensional sectional view; Figure 3 For the present invention Figure 1 Another partial sectional view; Figure 4 For the present invention Figure 1 Another perspective illustration; Figure 5 This is an exploded view of part of the structure of the present invention; Figure 6 This is a partial structural diagram of the present invention; Figure 7 This is an exploded view of another part of the structure of the present invention; Figure 8 This is a schematic diagram of another part of the structure of the present invention; Figure 9 For the present invention Figure 8 Partial three-dimensional sectional view.

[0017] Explanation of reference numerals in the attached figures: 1. Filtering mechanism; 101. Main inner core; 102. Mounting cylinder; 103. Annular baffle; 104. Air inlet chamber; 105. Ventilation groove; 2. Air inlet pipe; 3. Exhaust pipe; 4. Ash removal mechanism; 401. Connecting cylinder; 402. Guide pipe; 403. Secondary inner core; 404. Annular cavity; 405. Through groove; 5. Collection mechanism; 501. Collection pipe; 502. Solenoid valve; 6. Switching component; 601. Connecting cover; 602. 1. Connecting pipe; 603. Sealing disc; 7. Closure assembly; 701. Rotating collar; 702. Air outlet groove; 8. Mounting cover; 9. Drive component; 10. Mounting box; 11. Protruding plate; 12. Through groove; 13. Arc-shaped toothed plate; 14. Drive gear; 15. Air exchange pipe; 16. Dust collection component; 1601. Cyclone separator cover; 1602. Air outlet pipe; 1603. Drawer-type outer box; 1604. Dust collection box; 17. Arc-shaped baffle. Detailed Implementation

[0018] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0019] like Figures 1 to 9 As shown, an embodiment of the present invention provides an automotive exhaust particulate matter treatment device, comprising: Mounting cover 8, one end of mounting cover 8 is connected to air inlet pipe 2, and the other end is connected to exhaust pipe 3; The filter mechanism 1 is installed inside the mounting cover 8. The filter mechanism 1 is equipped with a main inner core 101. The exhaust gas enters the air inlet surface of the main inner core 101 and flows out from the outer peripheral wall. It should be noted that the main inner core 101 is the internal filter core of the existing particulate trap. The main inner core 101 is honeycomb-shaped, with one end face being the air inlet surface for the exhaust gas to enter and the other end face being the sealing surface. After the exhaust gas enters the main inner core 101, the exhaust gas passes through the gaps in the inner wall of the main inner core 101 and is finally discharged from the outer peripheral side of the main inner core 101. During this process, the particulate matter in the exhaust gas is located in the honeycomb pores to complete the filtration of the exhaust gas particulate matter. In other words, under normal operating conditions, the exhaust gas from a diesel or gasoline engine enters the intake manifold 2 and then enters the filter mechanism 1 inside the mounting cover 8. After entering the filter mechanism 1, the exhaust gas passes through the main inner core 101 to filter the particles in the exhaust gas. Subsequently, the exhaust gas that has completed particle filtration will be discharged from the outer periphery of the main inner core 101 into the interior of the mounting cover 8. Because the mounting cover 8 is connected to the exhaust pipe 3, the exhaust gas that has completed particle filtration will be discharged from the exhaust pipe 3 for subsequent filtration of harmful gases in the exhaust gas. The exhaust pipe 3 is connected to the three-way catalytic converter in the car through a pipe. When too much particulate matter accumulates in the main inner core 101, the car's internal system will burn the particulate matter in the main inner core 101 at high temperature, forming ash that is located in the main inner core 101.

[0020] The ash removal mechanism 4 is installed on the mounting cover 8. After the exhaust gas enters the ash removal mechanism 4, the particles in the exhaust gas are filtered, and the exhaust gas after the particles are filtered enters the mounting cover 8 and enters the outer peripheral wall of the main inner core 101, so that the exhaust gas containing ash is discharged from the air inlet surface of the main inner core 101. In the ash removal condition, the exhaust gas in the air inlet pipe 2 will directly enter the ash removal mechanism 4. After the ash removal mechanism 4 filters the particles in the exhaust gas, the exhaust gas that has completed particle filtration will enter the honeycomb holes of the main inner core 101 from the outer peripheral side. Therefore, the ash is located in the honeycomb holes of the main inner core 101. Since the exhaust gas has already been filtered by particles, the exhaust gas will be discharged from the air inlet surface of the main inner core 101 after entering its honeycomb holes from the outer peripheral side. Thus, the exhaust gas will carry a large amount of ash when passing through the main inner core 101. The collection mechanism 5 is installed on the mounting cover 8. The exhaust gas discharged from the air intake surface of the main inner core 101 is separated from the ash in the exhaust gas by the collection mechanism 5 and then guided into the exhaust pipe 3. That is to say, in the ash discharge mode, the exhaust gas containing ash will enter the collection mechanism 5 and be separated from the ash in the exhaust gas by the collection mechanism 5, so that the exhaust gas without ash can be discharged directly from the exhaust pipe 3. It should be noted that during the vehicle operation, the exhaust gas is mainly filtered by the filter mechanism 1 (normal operating condition). As the ash inside the main inner core 101 gradually accumulates more, the operation mode is switched from normal operating condition to ash discharge mode. The ash in the main inner core 101 is discharged and collected by the air pressure of the exhaust gas. That is to say, the ash discharge mode is only activated when the ash in the main inner core 101 accumulates too much and affects the vehicle's power and fuel consumption. The frequency of use is low. The switching element 6, installed on the mounting cover 8, controls the flow of exhaust gas from the intake pipe 2 to the filter mechanism 1 or the ash removal mechanism 4. In other words, the switching element 6 can change the direction of exhaust gas flow during vehicle operation. This means that the device can be switched to normal operating condition or ash removal condition as needed. Compared with the prior art, when a large amount of ash accumulates inside the main inner core 101, the switching element 6 allows the exhaust gas to enter the ash removal mechanism 4 to discharge the ash from the main inner core 101. The ash is then collected by the collection mechanism 5, effectively reducing the problems of reduced engine power and increased fuel consumption caused by excessive ash accumulation in the main inner core 101.

[0021] like Figure 1 and Figure 2As shown, in some embodiments, the filter mechanism 1 includes a mounting cylinder 102 installed inside the mounting cover 8. A space is left between the mounting cylinder 102 and the inner wall of the mounting cover 8 for the filtered exhaust gas to flow to the exhaust pipe 3. An annular baffle 103 is constructed along the edge of the mounting cylinder 102 facing the intake pipe 2. The annular baffle 103 and the mounting cover 8 form an intake chamber 104. The main inner core 101 is installed inside the mounting cylinder 102, and its intake surface communicates with the intake chamber 104. Multiple ventilation slots 105 are arranged in a circular array on the outer periphery of the mounting cylinder 102. That is, under normal operating conditions, the exhaust gas from the intake pipe 2 enters the mounting chamber because the main inner core 101... The air intake surface is connected to the air intake chamber 104, so the exhaust gas will enter the honeycomb holes of the main inner core 101 and then be discharged from the outer periphery of the main inner core 101. Because the outer periphery of the mounting cylinder 102 is provided with a ventilation groove 105, the exhaust gas after filtering particles will flow into the mounting cover 8 from the ventilation groove 105. The annular baffle 103 can prevent the filtered exhaust gas from re-entering the air intake chamber 104. Then the exhaust gas will be discharged from the exhaust pipe 3, completing the filtration of exhaust gas particles. Under normal working conditions, the switching component 6 can effectively prevent the exhaust gas from entering the ash removal mechanism 4. The filtering mechanism 1 can meet the daily driving needs of filtering particles in the exhaust gas.

[0022] like Figure 1 and Figure 2As shown, in some embodiments, the ash removal mechanism 4 includes a connecting cylinder 401 constructed at the end of the mounting cylinder 102 away from the air inlet pipe 2. A guide pipe 402 with one end communicating with the end of the connecting cylinder 401 is constructed on the mounting cover 8. A switching element 6 acts on the other end of the guide pipe 402. A secondary inner core 403 is installed inside the connecting cylinder 401. The air inlet surface of the secondary inner core 403 blocks the connection between the guide pipe 402 and the connecting cylinder 401. An annular cavity 404 is formed between the secondary inner core 403 and the inner wall of the connecting cylinder 401. A through groove 405 communicating with the mounting cylinder 102 is opened on the inner end face of the connecting cylinder 401. A groove for canceling or blocking the through groove is installed on the mounting cover 8. The closing component 7 of the air duct 105, that is, the switching component 6 allows the exhaust gas containing particles to enter the guide pipe 402. At this time, the exhaust gas will not enter the main inner core 101 of the filter mechanism 1. After entering the guide pipe 402, the exhaust gas will enter the secondary inner core 403 through the guide pipe 402. It should be noted that the structure of the secondary inner core 403 is the same as that of the main inner core 101. Therefore, after the exhaust gas enters the secondary inner core 403, it will flow from the outer periphery of the secondary inner core 403 into the annular cavity 404. Because the connecting cylinder 401 has an annular groove 405 that communicates with the mounting cylinder 102, the exhaust gas that has completed particle filtration will enter the annular cavity 404. Inside the mounting cylinder 102, it should be noted that during ash discharge, the closing component 7 will block the ventilation slot 105. Therefore, the exhaust gas inside the mounting cylinder 102 will enter the honeycomb pores from the outer periphery of the main inner core 101, and then exit from the air inlet surface of the main inner core 101. At this time, the ash in the main inner core 101 will be discharged together with the exhaust gas and enter the subsequent collection mechanism 5. It should be noted that under normal operating conditions, the closing component 7 will not block the ventilation slot 105. When switching from normal operating conditions to ash discharge conditions via the switching component 6, the particles in the main inner core 101 can be heated and burned to form ash before the ash is discharged. The switching component 6 switches from normal operating condition to ash discharge condition to discharge the ash in the main inner core 101. The exhaust gas entering from the outer periphery of the main inner core 101 is filtered by particles, so long-term use will not block the surface of the main inner core 101, nor will it cause particulate matter in the exhaust gas to be discharged from the exhaust pipe 3. It should be noted that the secondary inner core 403 is used much less frequently than the main inner core 101. It is only used when there is a lot of ash accumulation in the main inner core 101, rather than needing to be cleaned by the ash discharge mechanism 4 after each combustion of the particles inside the main inner core 101, which greatly reduces the replacement frequency of the secondary inner core 403.

[0023] like Figure 1 , Figure 3 and Figure 9As shown, in some embodiments, the closing component 7 includes a rotating collar 701 that is rotatably fitted on the outer periphery of the mounting cylinder 102. The outer periphery of the rotating collar 701 is provided with an air outlet groove 702. A driving member 9 for driving the rotating collar 701 to rotate is installed on the outside of the mounting cover 8. That is, under normal working conditions, the air outlet groove 702 and the ventilation groove 105 are in a connected state, and the number of air outlet grooves 702 is the same as the number of ventilation grooves 105. When switching to the ash discharge working condition, the rotating collar 701 is driven to rotate by the driving member 9. During the rotation of the rotating collar 701, the inner periphery of the rotating collar 701 blocks the ventilation groove 105, while the outer periphery of the mounting cylinder 102 blocks the air outlet groove 702, thereby ensuring that the exhaust gas will not be discharged from the ventilation groove 105 and the air outlet groove 702 when it enters the outer periphery of the main inner core 101.

[0024] This application does not impose specific limitations on the structure of the driving component 9. It can be any driving structure capable of satisfying the rotation of the rotating collar 701. For example, in some embodiments, the driving component 9 includes a mounting box 10 constructed on the outer periphery of the mounting cover 8, a motor installed inside the mounting box 10, a driving gear 14 mounted on the output shaft of the motor, a protruding plate 11 constructed on the outer periphery of the rotating collar 701, a through groove 12 opened on the mounting cover 8, one end of the protruding plate 11 passing through the through groove 12 and located inside the mounting box 10, and an arc-shaped toothed plate 13 installed thereon, the arc-shaped toothed plate 13 meshing with the driving gear 14, such as... Figure 3 As shown, the motor is located inside the mounting box 10, which effectively prevents the motor from contacting the exhaust gas and affecting its service life. Furthermore, the arc-shaped toothed plate 13 is equipped with an arc-shaped baffle 17. When the arc-shaped toothed plate 13 moves, the arc-shaped baffle 17 always blocks the through slot 12. That is, when the output shaft of the motor rotates, the motor rotation drives the drive gear 14 to rotate. During the continuous rotation of the drive gear 14, it will drive the arc-shaped toothed plate 13 that meshes with it to move. Because the arc-shaped toothed plate 13 is equipped with an arc-shaped baffle 17, the arc-shaped toothed plate 13 always blocks the through slot 12 when it moves. 2. This effectively prevents high-temperature exhaust gas from entering the mounting box 10 through the slot 12, thus affecting the service life of the motor. The motor can be a high-temperature resistant motor to improve its service life. The surfaces of the mounting box 10 and the mounting cover 8 are coated with a high-temperature resistant coating, further improving the service life of the equipment. When the arc-shaped toothed plate 13 moves, it will drive the rotating collar 701 to rotate through the convex plate 11, thereby eliminating or blocking the vent slot 105. Moreover, the drive gear 14 and the arc-shaped toothed plate 13 are both located inside the mounting box 10, effectively preventing high-temperature exhaust gas from contacting it and maximizing the service life.

[0025] like Figure 1 and Figure 2As shown, in some embodiments, one end of the mounting cover 8 is eccentrically connected to a connecting cover 601. The switching component 6 includes a connecting pipe 602 eccentrically connected to the connecting cover 601. The free end of the connecting pipe 602 is connected to one end of the guide pipe 402. The intake pipe 2 has two branch sections, both of which are connected to the end of the connecting cover 601 away from the mounting cover 8. One branch section is coaxial with the mounting cover 8, and the other branch section is coaxial with the connection point between the connecting pipe 602 and the connecting cover 601. A sealing disc 603 is rotatably mounted inside the connecting cover 601. Both ends of the sealing disc 603 are in contact with the inner end face of the connecting cover 601. The sealing disc 603 rotates to seal the connection point between one of the branch sections and the connecting cover 601. Figure 2 As shown, in the ash discharge condition at the position of the sealing plate 603, the other branch end of the air inlet pipe 2 is connected to the connecting pipe 602 through the connecting cover 601. The exhaust gas containing particles in the air inlet pipe 2 will pass through the connecting cover 601 and enter the connecting pipe 602. Because the connecting pipe 602 is connected to the guide pipe 402, the exhaust gas will enter the guide pipe 402 from the connecting pipe 602 and then enter the ash discharge mechanism 4. Preferably, the two branch sections of the air inlet pipe 2 are connected by a ventilation pipe 15. When switching from the normal working condition to the ash discharge condition, the exhaust gas with particles at the two branch ends of the air inlet pipe 2 will quickly merge together under the action of the ventilation pipe 15, improving the flow effect.

[0026] like Figure 1 , Figure 2 and Figure 4As shown, in some embodiments, the collection mechanism 5 includes a collection pipe 501 connected to the mounting cover 8, a solenoid valve 502 installed on the collection pipe 501, and a dust collection component 16 connected to the free end of the collection pipe 501. The dust collection component 16 is connected to the exhaust pipe 3. When the exhaust gas containing ash enters the exhaust pipe 3 through the dust collection component 16, the dust collection component 16 collects the ash in the exhaust gas. In the ash discharge condition, the exhaust gas containing ash is discharged from the air inlet surface of the main inner core 101 and will be located in the air inlet chamber 104. That is, the collection pipe 501 is connected to the air inlet chamber 104. At this time, the solenoid valve 502 is in the open state, and the exhaust gas containing ash will enter the collection pipe 501 and pass through the dust collection component 16 to collect the ash in the exhaust gas. Preferably, in order to avoid directly discharging the ash into the outside world and causing environmental pollution, the dust collection component 16 includes a cyclone separator connected to the free end of the collection pipe 501. Cyclone separator 1601 has an exhaust port connected to an outlet pipe 1602. One end of the outlet pipe 1602 is connected to one side of the exhaust pipe 3. The dust discharge port at the bottom of the cyclone separator 1601 is connected to a drawer-type outer box 1603 with one side open. The drawer-type outer box 1603 is connected to the outside of the mounting cover 8. The drawer-type outer box 1603 is detachably equipped with a dust collection box 1604. The dust collection box 1604 can be installed on the drawer-type outer box 1603 by bolts. After the exhaust gas containing ash passes through the cyclone separator 1601, the ash will be located in the dust collection box 1604. After cleaning the ash, it is only necessary to remove the dust collection box 1604 for easy use. After passing through the cyclone separator 1601, the exhaust gas will enter the exhaust pipe 3 from the outlet pipe 1602, thereby discharging the exhaust gas and preventing the exhaust gas containing ash from clogging the three-way catalytic converter during further treatment.

[0027] The above-disclosed embodiments are merely a few specific examples of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A vehicle exhaust particulate matter treatment device, characterized in that, include: Mounting cover (8), one end of which is connected to an air inlet pipe (2) and the other end is connected to an exhaust pipe (3); A filter mechanism (1) is installed inside the mounting cover (8). A main inner core (101) is installed on the filter mechanism (1). The exhaust gas enters the air inlet surface of the main inner core (101) and flows out from the outer peripheral wall. Ash removal mechanism (4) is installed on mounting cover (8). After the exhaust gas enters the ash removal mechanism (4), the particles in the exhaust gas are filtered, and the exhaust gas after filtering the particles enters the mounting cover (8) and enters the outer peripheral wall of the main inner core (101) to form exhaust gas containing ash that is discharged from the air inlet surface of the main inner core (101). The collection mechanism (5) is installed on the mounting cover (8). The exhaust gas discharged from the air intake surface of the main inner core (101) is separated from the ash in the exhaust gas by the collection mechanism (5) and then guided into the exhaust pipe (3). The switching element (6) is installed on the mounting cover (8) to control the exhaust gas from the intake pipe (2) to enter the filter mechanism (1) or the ash removal mechanism (4).

2. The vehicle exhaust particulate matter treatment device as described in claim 1, characterized in that, The filter mechanism (1) includes a mounting cylinder (102) installed inside the mounting cover (8). There is a space between the mounting cylinder (102) and the inner wall of the mounting cover (8). The mounting cylinder (102) has an annular partition (103) along its edge facing the air inlet pipe (2). The annular partition (103) and the mounting cover (8) form an air inlet chamber (104). The main inner core (101) is installed inside the mounting cylinder (102) and its air inlet surface communicates with the air inlet chamber (104). The outer periphery of the mounting cylinder (102) has a plurality of ventilation slots (105) arranged in a circular array.

3. The automotive exhaust particulate matter treatment device as described in claim 1, characterized in that, The ash removal mechanism (4) includes a connecting cylinder (401) constructed at one end of the mounting cylinder (102) away from the air inlet pipe (2). A guide pipe (402) with one end connected to the end of the connecting cylinder (401) is constructed on the mounting cover (8). A switching component (6) acts on the other end of the guide pipe (402). A secondary inner core (403) is installed inside the connecting cylinder (401). The air inlet surface of the secondary inner core (403) blocks the connection between the guide pipe (402) and the connecting cylinder (401). An annular cavity (404) is formed between the secondary inner core (403) and the inner wall of the connecting cylinder (401). A through groove (405) communicating with the mounting cylinder (102) is opened on the inner end face of the connecting cylinder (401). A closing component (7) for canceling the blockage or blocking the air groove (105) is installed on the mounting cover (8).

4. The automobile exhaust particulate matter treatment device as described in claim 3, characterized in that, The closing assembly (7) includes a rotating collar (701) that is rotatably fitted on the outer periphery of the mounting cylinder (102). An air outlet groove (702) is provided on the outer periphery of the rotating collar (701). A driving component (9) for driving the rotating collar (701) to rotate is installed on the outside of the mounting cover (8).

5. The automobile exhaust particulate matter treatment device as described in claim 4, characterized in that, The drive component (9) includes a mounting box (10) constructed on the outer periphery of the mounting cover (8). A motor is installed inside the mounting box (10), and a drive gear (14) is installed on the output shaft of the motor. A protruding plate (11) is constructed on the outer periphery of the rotating collar (701). A through groove (12) is opened on the mounting cover (8). One end of the protruding plate (11) passes through the through groove (12) and is located inside the mounting box (10) and is equipped with an arc-shaped toothed plate (13). The arc-shaped toothed plate (13) meshes with the drive gear (14).

6. The vehicle exhaust particulate matter treatment device as described in claim 1, characterized in that, The mounting cover (8) is eccentrically connected to a connecting cover (601) at one end. The switching component (6) includes a connecting pipe (602) eccentrically connected to the connecting cover (601). The free end of the connecting pipe (602) is connected to one end of the guide pipe (402). The air intake pipe (2) has two branch sections, both of which are connected to the end of the connecting cover (601) away from the mounting cover (8). One branch section is coaxial with the mounting cover (8), and the other branch section is coaxial with the connection between the connecting pipe (602) and the connecting cover (601). A sealing disc (603) is rotatably installed inside the connecting cover (601). Both ends of the sealing disc (603) are in contact with the inner end face of the connecting cover (601). The sealing disc (603) rotates to seal the connection between one of the branch sections and the connecting cover (601).

7. The automobile exhaust particulate matter treatment device as described in claim 1, characterized in that, The collection mechanism (5) includes a collection pipe (501) connected to the mounting cover (8), a solenoid valve (502) is installed on the collection pipe (501), and a dust collection component (16) is connected to the free end of the collection pipe (501). The dust collection component (16) is connected to the exhaust pipe (3). When the exhaust gas containing ash enters the exhaust pipe (3) through the dust collection component (16), the dust collection component (16) collects the ash in the exhaust gas.

8. The automobile exhaust particulate matter treatment device as described in claim 7, characterized in that, The dust collection component (16) includes a cyclone separator (1601) connected to the free end of the collection pipe (501). The exhaust port of the cyclone separator (1601) is connected to an exhaust pipe (1602). One end of the exhaust pipe (1602) is connected to one side of the exhaust pipe (3). The dust discharge port at the bottom of the cyclone separator (1601) is connected to a drawer-type outer box (1603) with one side open. The drawer-type outer box (1603) is connected to the outside of the mounting cover (8). The drawer-type outer box (1603) is detachably equipped with a dust collection box (1604).

9. The automobile exhaust particulate matter treatment device as described in claim 1, characterized in that, The two branch sections of the intake pipe (2) are connected by an air exchange pipe (15).

10. The automobile exhaust particulate matter treatment device as described in claim 5, characterized in that, An arc-shaped baffle (17) is constructed on the arc-shaped toothed plate (13). When the arc-shaped toothed plate (13) moves, the arc-shaped baffle (17) always blocks the through slot (12).

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