Exhaust purification treatment device for automobile engine

Abstract

The invention discloses an automobile engine exhaust purification treatment device, and relates to the technical field of tail gas purification treatment.The device comprises a catalyst shell, an air inlet pipe and an air outlet pipe, the air inlet pipe and the air outlet pipe are arranged at the two ends of the catalyst shell, and a filtering piece is installed on the inner wall of the end, close to the air inlet pipe, of the catalyst shell; the outer side of the catalyst shell is sleeved with a jacket shell, an annular fence is arranged on the inner wall of the end, close to the filtering piece, of the jacket shell, a plurality of heat conduction pieces distributed on the side wall of the catalyst shell in the circumferential direction are arranged in the annular fence, and a first piston capable of being reset in a sliding mode is arranged between the annular fence and the jacket shell. The cleaning mechanism is driven by exhaust waste heat, dependence on the running speed of an automobile is eliminated, self-adaptive intermittent cleaning under all working conditions is achieved, excessive abrasion of a filter screen and a cleaning piece is effectively avoided, meanwhile, the synchronous automatic ash discharging function is integrated, and manual regular ash discharging maintenance is not needed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tail gas purification treatment, in particular to an exhaust purification treatment device for automobile engine. BACKGROUND

[0002] The exhaust purification treatment device for automobile engine is a key component for reducing motor vehicle exhaust pollution and meeting increasingly stringent emission regulations. With the enhancement of global environmental awareness and the continuous improvement of emission standards, efficient and reliable exhaust aftertreatment technology is crucial for reducing the emission of harmful substances such as nitrogen oxides (NOx), hydrocarbons (HC), carbon monoxide (CO), and particulate matter (PM).

[0003] In the patent with patent number CN118088299B, a tail gas purification device for engine is disclosed, which collects the wind during vehicle driving through a wind collecting assembly, and then drives the rotating shaft to rotate under the action of structures such as rotating rod one, bevel gear one, and bevel gear two, so that the cleaning assembly works to clean the filter screen. However, this technical solution still has the following defects: 1. During normal driving of the vehicle, as long as there is a certain speed of airflow, the wind collecting assembly will continuously work to drive the cleaning assembly to perform uninterrupted cleaning actions on the filter screen. Regardless of the actual pollution level of the filter screen, such continuous mechanical contact and friction will accelerate the wear of the cleaning parts and the filter screen itself; 2. The driving force of the wind collecting assembly completely depends on the relative airflow generated during vehicle driving. When the vehicle is at low speed, traffic congestion, or the engine is started but the vehicle is stationary (such as idling preheating, waiting, etc.), it is not enough to effectively drive the wind collecting assembly, resulting in failure or extremely low efficiency of the cleaning function. At this time, the impurities on the filter screen will continue to accumulate and cannot be cleaned in time, which will still gradually cause clogging problems. SUMMARY

[0004] The present application provides an exhaust purification treatment device for automobile engine, which can solve the problems of cleaning failure at low speed or stationary of the vehicle and easy overwear during driving in the prior art filter screen self-cleaning method relying on wind power.

[0005] The purpose of the present application can be achieved by the following technical solutions: The utility model provides an automobile engine exhaust purification treatment device, including catalyst housing, the air inlet pipe and the air outlet pipe of setting in catalyst housing both ends, the inner wall of catalyst housing is close to the air inlet pipe one end and is installed with filter piece, and the rotatable cleaning piece is installed on the filter piece, the outside of catalyst housing is sleeved with jacket shell, and the inner wall of jacket shell is equipped with annular enclosure near filter piece one end, a plurality of heat conducting pieces are equipped with in annular enclosure and are distributed on the lateral wall of catalyst housing, the first piston of slidable reset is equipped between annular enclosure and jacket shell, and the linkage mechanism is installed between first piston and cleaning piece, the bottom of catalyst housing is connected with and is equipped with the automatic ash removal mechanism for guide ash piece between first piston.

[0006] As a further scheme of the utility model: the axial length of the annular enclosure is less than the distance between the inner walls of the two ends of the jacket shell, the first piston and the annular enclosure divide the inner cavity of the jacket shell into a first cavity and a second cavity, the heat conducting pieces are located in the first cavity, and a plurality of ventilation openings are provided on the lateral wall of the jacket shell in a circumferential direction and are in communication with the second cavity.

[0007] As a further scheme of the utility model: the cleaning piece includes a rotating pin, a brush rod with bristles, and a rotating shaft, the rotating pin is coaxially through the filter piece and is rotationally connected thereto, the brush rod is connected to the end of the rotating pin at the center of the side provided with the bristles, and the rotating shaft is connected to the center of the side of the brush rod away from the rotating pin.

[0008] As a further scheme of the utility model: the heat conducting pieces include arc-shaped heat conducting plates, strip-shaped heat conducting pieces, and arc-shaped heat conducting pieces, the arc-shaped heat conducting plates are inlaidly installed on the curved lateral wall of the jacket shell, a plurality of the arc-shaped heat conducting plates are located in the jacket shell and are distributed along the length direction of the arc-shaped heat conducting plates, the strip-shaped heat conducting pieces are provided on the side of the arc-shaped heat conducting plates away from the arc-shaped heat conducting plates, and the strip-shaped heat conducting pieces are located in the inner cavity of the catalyst housing.

[0009] As a further scheme of the utility model: the linkage mechanism includes an arc-shaped pressing plate, a sliding plate, a sealing lifting piece, a rack, and a gear, the sealing lifting piece is installed on the lateral wall of the catalyst housing close to the air inlet pipe, the sliding plate is slidably through one end of the catalyst housing and is connected to the first piston, the arc-shaped pressing plate is connected to the end of the sliding plate, one end of the sealing lifting piece is in contact with the lateral wall of the arc-shaped pressing plate, the other end of the sealing lifting piece is connected to the rack, the gear is sleeved on the rotating shaft, and the gear is in meshing arrangement with the rack.

[0010] As a further scheme of the present application, the sealing lifting member comprises a piston cylinder, a second piston, a pressure rod, a first spring and an extension column, one end of the pressure rod is in contact with the arc-shaped pressing plate, and the other end of the pressure rod is connected with the second piston, the piston cylinder is inlaidly installed on the side wall of the catalyst housing for sliding of the second piston, the rack is in a reverse L-shaped structure, one end of the rack is connected with the extension column, the other end of the extension column extends into the piston cylinder and is connected with the second piston, and the first spring is installed in the piston cylinder and is used for resetting the second piston when not under pressure.

[0011] As a further scheme of the present application, the first piston is provided with a plurality of circumferentially distributed second springs on the side close to the filter element, and one end of the second spring away from the first piston is connected with the inner wall of one end of the jacket shell.

[0012] As a further scheme of the present application, the ash guiding member comprises a ring-shaped cylinder, an ash guiding port and an ash discharging port, the ash guiding port is installed between the bottom of the catalyst housing and the top of the ring-shaped cylinder, and the ash guiding port is in communication with the inner cavity of the ring-shaped cylinder, the bottom of the catalyst housing is provided with a strip-shaped port corresponding to the filter element, the ash guiding port covers the strip-shaped port, and the ash discharging port is arranged at the bottom of the ring-shaped cylinder and is distributed along the length direction of the ring-shaped cylinder.

[0013] As a further scheme of the present application, the automatic ash discharging mechanism comprises a rotating pipe, a shifting piece, a helical groove, a plug rod and a key, the rotating pipe is coaxially arranged in the ring-shaped cylinder, one end of the rotating pipe is slidably penetrated through the end of the jacket shell and extends into the inner cavity of the jacket shell, a plurality of the shifting pieces are arranged in the ring-shaped cylinder and are circumferentially distributed along the rotating pipe, one end of the plug rod is connected with the first piston, and the other end of the plug rod extends into the rotating pipe, the helical groove is arranged on the inner wall of the rotating pipe, the key is arranged in the matching helical groove, and the key is arranged on the side wall of the end of the plug rod.

[0014] As a further scheme of the present application, the length of the shifting piece is equal to the distance between the inner walls of the two ends of the ring-shaped cylinder, and one end of the shifting piece away from the rotating pipe is in contact with the inner wall of the ring-shaped cylinder.

[0015] The present application has the following beneficial effects: 1、In the present application, by setting the jacket shell surrounding the outside of the catalyst shell, heat conducting piece and the first piston which can slide, using the high temperature exhaust gas discharged by the engine as the heat energy source, driving the cleaning mechanism to work. Specifically, when the high temperature exhaust gas flows through the catalyst shell, its heat is absorbed by the heat conducting piece and conducted to the first cavity of the jacket shell, heating the internal air to expand, thereby pushing the first piston to slide to the filter element direction against the reset force. This design ingeniously uses the inherent exhaust heat of the engine during operation as a power source, which is not affected by the driving state of the vehicle, fundamentally solves the problem that the cleaning power of the filter screen in the prior art depends on the wind speed of the vehicle driving, leading to the failure of the cleaning function under the conditions of idle speed, low speed or parking, and realizes the self-adaptive cleaning ability under all working conditions.

[0016] 2、In the present application, through the synergistic effect of the first piston, linkage mechanism and cleaning element, and the cooperation of the reset assembly, intermittent automatic cleaning of the filter element is realized. When the first piston is pushed to slide by the heat expanded gas, the linear motion is converted into the rotary motion of the cleaning element through the linkage mechanism, thereby cleaning the impurities accumulated on the surface of the filter element. After the first piston slides to the set position, it will slide back under the action of air pressure balance and reset assembly until the next time the heat accumulation pushes it again. This reciprocating motion based on heat accumulation and release makes the cleaning action not continuous, effectively avoiding the unnecessary excessive wear of the filter screen and the cleaning element caused by the continuous rotation of the cleaning element in the prior art.

[0017] 3、In the present application, by linking the reciprocating motion of the first piston with the ash guide and the automatic ash removal mechanism, the automation and synchronization of the cleaning and ash removal process are realized. During the reciprocating sliding process of the first piston, the automatic ash removal mechanism is driven to work, facilitating the automatic discharge of the dust cleaned from the filter element. This design makes the cleaning action of the filter element each time be able to trigger the ash removal operation, not only ensures that the impurities are removed from the system in time, but also eliminates the need for manual regular maintenance of the ash removal, improving the automation degree and long-term operation reliability of the device. BRIEF DESCRIPTION OF DRAWINGS

[0018] The present application will be further described below in conjunction with the drawings.

[0019] Figure 1 is a perspective view of a vehicle engine exhaust purification treatment device according to the present application; Figure 2 is a first perspective view of a vehicle engine exhaust purification treatment device according to the present application; Figure 3 is a second perspective view of a vehicle engine exhaust purification treatment device according to the present application; Figure 4 is a third perspective view of a vehicle engine exhaust purification treatment device according to the present application; Figure 5 is a perspective view of the connecting part of the heat conducting member and the catalyst housing in the exhaust gas purification device for automobile engine according to the present application; Figure 6 is a perspective view of the connecting part of the cleaning member and the linkage mechanism in the exhaust gas purification device for automobile engine according to the present application; Figure 7 is a sectional view of the sealing lifting member in the exhaust gas purification device for automobile engine according to the present application; Figure 8 is a perspective view of the connecting part of the ash guiding member and the automatic ash discharging mechanism in the exhaust gas purification device for automobile engine according to the present application; Figure 9 is a partial sectional view of the inserted rod and the rotating tube separated in the exhaust gas purification device for automobile engine according to the present application.

[0020] In the figure: 100, catalyst housing; 101, air inlet pipe; 102, air outlet pipe; 103, strip-shaped port; 200, filtering member; 300, cleaning member; 301, rotating pin; 302, brush rod; 303, rotating shaft; 400, jacket shell; 401, annular fence; 402, ventilation port; 403, first piston; 500, heat conducting member; 501, arc-shaped heat conducting plate; 502, strip-shaped heat conducting sheet; 503, arc-shaped heat conducting sheet; 600, linkage mechanism; 601, arc-shaped pressing plate; 602, sliding plate; 603, sealing lifting member; 6031, piston cylinder; 6032, second piston; 6033, pressing rod; 6034, first spring; 6035, extension column; 604, rack; 605, gear; 700, ash guiding member; 701, annular cylinder; 702, ash guiding port; 703, ash discharging port; 800, automatic ash discharging mechanism; 801, rotating tube; 802, push piece; 803, helical groove; 804, inserted rod; 805, protruding key; 900, second spring. DETAILED DESCRIPTION

[0021] The specific embodiments of the present application are described in detail below, but it should be understood that the scope of protection of the present application is not limited by the specific embodiments.

[0022] As Figures 1-9As shown, the present invention is an exhaust purification device for an automobile engine, including a catalyst housing 100, an intake pipe 101 and an exhaust pipe 102 disposed at both ends of the catalyst housing 100. A filter element 200 is installed on the inner wall of the catalyst housing 100 near the intake pipe 101, and a rotatable cleaning element 300 is installed on the filter element 200. A jacket shell 400 is fitted on the outer side of the catalyst housing 100, and an annular barrier 401 is provided on the inner wall of the jacket shell 400 near the filter element 200. Multiple heat-conducting elements 500 are provided inside the annular barrier 401 and distributed circumferentially on the side wall of the catalyst housing 100. A first piston 403 that can slide and reset is provided between the annular barrier 401 and the jacket shell 400, and a linkage mechanism 600 is installed between the first piston 403 and the cleaning element 300. A dust guide element 700 is connected to the bottom of the catalyst housing 100, and an automatic dust removal mechanism 800 is installed between the dust guide element 700 and the first piston 403.

[0023] It should be noted that during use, the high-temperature exhaust gas from the car engine enters the catalyst housing 100 through the intake pipe 101. First, the filter element 200 intercepts large particulate impurities, and then the high-temperature gas flows through the inner cavity of the catalyst housing 100. During this process, the circumferentially distributed heat-conducting elements 500 continuously absorb the exhaust heat and transfer the heat to the air in the first cavity of the jacket housing 400 defined by the annular enclosure 401. The heated air expands and generates pressure, pushing the first piston 403 to slide towards the filter element 200 against the elastic force of the second spring 900. The sliding first piston 403 converts the linear motion into the rotation of the cleaning element 300 through the linkage mechanism 600, thereby causing the brush rod 302 on the cleaning element 300 to clean the surface of the filter element 200. When the first piston 403 slides to a set position, causing pressure relief in the first chamber, it can then slide back to its original position under the action of the second spring 900, waiting for the next heat accumulation. This cycle repeats, allowing the first piston 403 to intermittently reciprocate, thereby driving the cleaning component 300 to intermittently self-clean the filter element 200. Simultaneously, during the reciprocating sliding of the first piston 403, the dust cleaned from the filter element 200 is automatically discharged through the automatic dust removal mechanism 800 and the dust guide component 700, achieving a linkage between cleaning and dust removal.

[0024] like Figure 1 and Figure 3 As shown, the axial length of the annular enclosure 401 is less than the distance between the inner walls of the two ends of the jacket shell 400. The first piston 403 and the annular enclosure 401 divide the inner cavity of the jacket shell 400 into a first cavity and a second cavity. The heat-conducting component 500 is located in the first cavity. The side wall of the jacket shell 400 is provided with a plurality of ventilation openings 402 that communicate with the second cavity in the circumferential direction.

[0025] It should be noted that the heat conducting member 500 absorbs exhaust heat and heats the air in the first cavity formed by the first piston 403 and the annular enclosure 401, and the air is heated and pressurized to push the first piston 403 to slide towards the filter 200; when the first piston 403 slides to the position corresponding to the air vent 402 on the side wall of the jacket shell 400, the air vent 402 is in communication with the first cavity, so that the high-pressure gas in the first cavity is depressurized, and at the same time, the cold air from the outside is supplemented into the first cavity through the air vent 402, which causes the first piston 403 to reset under the pressure change, thereby preparing for the next thermal driving and realizing the intermittent reciprocating motion of the first piston 403 based on heat accumulation and pressure relief.

[0026] As shown in Figure 3 and Figure 6 , the cleaning member 300 includes a rotating pin 301, a brush rod 302 with bristles, and a rotating shaft 303, the rotating pin 301 is coaxially through the filter 200 and is rotatably connected thereto, the brush rod 302 is connected to the end of the rotating pin 301 at the center of the side provided with bristles, and the rotating shaft 303 is connected to the center of the side away from the rotating pin 301 of the brush rod 302.

[0027] It should be noted that in this embodiment, the rotating pin 301 is rotatably connected to the filter 200 through a sealing bearing, the gear 605 in the linkage mechanism 600 drives the rotating shaft 303 connected thereto to rotate, the rotating shaft 303 drives the brush rod 302 connected thereto to rotate around the axis of the rotating pin 301, so that the bristles fixed on the brush rod 302 are scraped and cleaned on the surface of the filter 200; the rotating pin 301 serves as the rotating center axis, penetrates through the filter 200 and is rotatably connected thereto, and provides stable support for the rotating motion of the brush rod 302.

[0028] As shown in Figure 3 and Figure 5 , the heat conducting member 500 includes an arc-shaped heat conducting plate 501, a strip-shaped heat conducting sheet 502, and an arc-shaped heat conducting sheet 503, the arc-shaped heat conducting plate 501 is inlaidly installed on the curved side wall of the jacket shell 400, a plurality of arc-shaped heat conducting plates 501 are located in the jacket shell 400 and are distributed along the length direction of the arc-shaped heat conducting plate 501, the strip-shaped heat conducting sheet 502 is arranged on the side away from the arc-shaped heat conducting plate 501 of the arc-shaped heat conducting plate 501, and the strip-shaped heat conducting sheet 502 is located in the inner cavity of the catalyst housing 100.

[0029] It should be noted that in this embodiment, the arc-shaped heat-conducting plate 501 is detachably mounted with the catalyst housing 100, the strip-shaped heat-conducting plate 502 in the inner cavity of the catalyst housing 100 directly contacts the high-temperature exhaust gas to absorb heat, and the heat is conducted to the arc-shaped heat-conducting plate 501 connected thereto, the arc-shaped heat-conducting plate 501 is inlaid on the curved side wall of the jacket shell 400 and transmits the heat to the air in the first cavity, so as to heat the air; a plurality of arc-shaped heat-conducting plates 501 are distributed in the circumferential direction to expand the heat exchange area and ensure efficient and uniform heat transfer.

[0030] As shown in Figure 1 , Figure 3 and Figure 6 , the linkage mechanism 600 includes an arc-shaped pressing plate 601, a sliding plate 602, a sealing lifting piece 603, a rack 604 and a gear 605, the sealing lifting piece 603 is installed at the side wall of the catalyst housing 100 near one end of the inlet pipe 101, the sliding plate 602 is slidably penetrated through one end of the catalyst housing 100 and connected with the first piston 403, the arc-shaped pressing plate 601 is connected at the end of the sliding plate 602, one end of the sealing lifting piece 603 is in contact with the side wall of the arc-shaped pressing plate 601, and the other end of the sealing lifting piece 603 is connected with the rack 604, the gear 605 is sleeved on the rotating shaft 303, and the gear 605 is in meshing arrangement with the rack 604.

[0031] It should be noted that when the first piston 403 is pushed to slide due to thermal expansion, the sliding plate 602 connected therewith is synchronously moved, the arc-shaped pressing plate 601 at the end of the sliding plate 602 is moved and presses the sealing lifting piece 603 in contact with the side wall thereof, so as to force the sealing lifting piece 603 to axially displace; the displacement of the sealing lifting piece 603 drives the rack 604 connected with the other end of the sealing lifting piece 603 to linearly move, the gear 605 in meshing arrangement with the rack 604 is rotated, and the gear 605 finally drives the cleaning piece 300 to rotate through the rotating shaft 303 sleeved thereon, so as to convert the linear movement of the first piston 403 driven by heat into the cleaning rotary movement of the cleaning piece 300.

[0032] As shown in Figures 6-7 , the sealing lifting piece 603 includes a piston cylinder 6031, a second piston 6032, a pressing rod 6033, a first spring 6034 and an extension column 6035, one end of the pressing rod 6033 is in contact with the arc-shaped pressing plate 601, and the other end of the pressing rod 6033 is connected with the second piston 6032, the piston cylinder 6031 is inlaidly installed on the side wall of the catalyst housing 100 for the second piston 6032 to slide, the rack 604 is in inverted L-shaped structure, one end of the rack 604 is connected with the extension column 6035, the other end of the extension column 6035 extends into the piston cylinder 6031 and is connected with the second piston 6032, the first spring 6034 is installed in the piston cylinder 6031, and the first spring 6034 is used to reset the second piston 6032 when it is not pressed.

[0033] It should be noted that when the first piston 403 slides and moves the arc-shaped pressing plate 601 through the sliding plate 602, the side of the arc-shaped pressing plate 601 continuously presses the pressing rod 6033, the pressing rod 6033 pushes the second piston 6032 to slide in the piston cylinder 6031 and compresses the first spring 6034, the sliding of the second piston 6032 drives the rack 604 to produce linear displacement through the extension column 6035 connected thereto, so as to drive the gear 605; when the arc-shaped pressing plate 601 moves reversely with the first piston 403 resetting, the pressure of the arc-shaped pressing plate 601 on the pressing rod 6033 is released, the second piston 6032 is reset by the compressed first spring 6034, and then the rack 604 is reset synchronously through the extension column 6035, so as to prepare for the next transmission.

[0034] As shown in Figures 2-3 , a plurality of circumferentially distributed second springs 900 are installed on the side of the first piston 403 close to the filter 200, and the end of the second spring 900 away from the first piston 403 is connected with the inner wall of one end of the jacket shell 400.

[0035] It should be noted that when the air in the first cavity expands by heating to push the first piston 403 to slide towards the filter 200, the first piston 403 gradually compresses the second spring 900; after the first cavity is depressurized through the vent 402, the compressed second spring 900 releases the elastic potential energy to push the first piston 403 to reset.

[0036] As shown in Figures 3-4 and Figure 8 , the ash guide 700 includes an annular cylinder 701, an ash guide port 702 and an ash discharge port 703, the ash guide port 702 is installed between the bottom of the catalyst housing 100 and the top of the annular cylinder 701, and the ash guide port 702 is connected with the inner cavity of the annular cylinder 701, the bottom of the catalyst housing 100 is provided with a strip-shaped port 103 corresponding to the filter 200, the ash guide port 702 covers the strip-shaped port 103, and the ash discharge port 703 is provided at the bottom of the annular cylinder 701 and is distributed along the length direction thereof.

[0037] It should be noted that the dust cleaned from the surface of the filter 200 falls through the strip-shaped port 103 provided at the bottom of the catalyst housing 100 under the action of gravity, enters the ash guide port 702 covering the strip-shaped port 103, and is guided into the annular cylinder 701 connected with the inner cavity of the ash guide port 702; the dust accumulated in the annular cylinder 701 is finally discharged from the system through the ash discharge port 703 provided at the bottom thereof.

[0038] As shown in Figure 3 and Figures 8-9As shown, the automatic dust discharging mechanism 800 comprises a rotating tube 801, a plurality of pokers 802, a helical groove 803, a plug 804 and a key 805. The rotating tube 801 is coaxially arranged in the annular cylinder 701 and one end of the rotating tube 801 extends into the inner cavity of the jacket shell 400 through the end of the jacket shell 400. The plurality of pokers 802 are arranged in the annular cylinder 701 and distributed circumferentially along the rotating tube 801. One end of the plug 804 is connected with the first piston 403 and the other end of the plug 804 extends into the rotating tube 801. The helical groove 803 is arranged on the inner wall of the rotating tube 801 and the key 805 is arranged in the helical groove 803 and on the side wall of the end of the plug 804.

[0039] It should be noted that the key 805 is a cylindrical structure extending into the helical groove 803. When the first piston 403 reciprocates, the plug 804 connected with the first piston 403 moves linearly synchronously. The key 805 fixed on the end of the plug 804 moves in the helical groove 803 arranged on the inner wall of the rotating tube 801. Since the key 805 is constrained by the groove wall, the linear motion of the key 805 is forcibly converted into the rotational motion of the rotating tube 801 around its axis. The rotation of the rotating tube 801 drives the plurality of pokers 802 distributed circumferentially to rotate in the annular cylinder 701, thereby stirring and pushing the dust falling through the dust guide 702 to the dust discharging port 703, realizing the synchronous and automatic dust discharging function.

[0040] As shown in Figure 4 and Figure 8 The length of the poker 802 is equal to the distance between the inner walls of the two ends of the annular cylinder 701 and the end of the poker 802 away from the rotating tube 801 is in close contact with the inner wall of the annular cylinder 701.

[0041] It should be noted that the length of the poker 802 and the close contact between the poker 802 and the inner wall of the annular cylinder 701 physically block the passage of the airflow through the dust guide 702 into the dust guide 700. This design makes the exhaust gas entering the catalyst housing 100 through the inlet pipe 101 unable to directly escape through the bottom strip-shaped port 103 and the dust guide 702 or bypass the filter 200, but is forced to be guided and must pass through the filter 200 for filtration before continuing to flow to the main body of the catalyst, thereby ensuring that all exhaust gas is fully filtered, improving the reliability and filtering efficiency of the purification device.

[0042] The above disclosure is only a few specific embodiments of the present application, but the embodiments of the present application are not limited thereto, and any changes that can be thought of by those skilled in the art shall fall within the protection scope of the present application.

Claims

1. An exhaust gas purification device for an automobile engine, comprising a catalyst housing (100), an intake pipe (101) and an exhaust pipe (102) disposed at both ends of the catalyst housing (100), characterized in that, A filter element (200) is installed on the inner wall of the catalyst housing (100) near the end of the air inlet pipe (101), and a rotatable cleaning element (300) is installed on the filter element (200). A jacket shell (400) is fitted on the outer side of the catalyst housing (100), and an annular enclosure (401) is provided on the inner wall of the jacket shell (400) near the end of the filter element (200). A plurality of heat-conducting elements (500) are provided in the annular enclosure (401) and distributed circumferentially on the side wall of the catalyst housing (100). A first piston (403) that can slide and reset is provided between the annular enclosure (401) and the jacket shell (400), and a linkage mechanism (600) is installed between the first piston (403) and the cleaning element (300). A dust guide element (700) is connected to the bottom of the catalyst housing (100), and an automatic dust discharge mechanism (800) is installed between the dust guide element (700) and the first piston (403).

2. The automobile engine exhaust purification treatment device according to claim 1, characterized in that, The axial length of the annular enclosure (401) is less than the distance between the inner walls of the two ends of the jacket shell (400). The first piston (403) and the annular enclosure (401) divide the inner cavity of the jacket shell (400) into a first cavity and a second cavity. The heat-conducting component (500) is located in the first cavity. The side wall of the jacket shell (400) is provided with a plurality of vents (402) that communicate with the second cavity.

3. The automobile engine exhaust purification treatment device according to claim 1, characterized in that, The cleaning component (300) includes a pivot pin (301), a brush rod (302) with bristles, and a rotating shaft (303). The pivot pin (301) coaxially passes through the filter component (200) and is rotatably connected to it. The center of the side of the brush rod (302) with bristles is connected to the end of the pivot pin (301). The rotating shaft (303) is connected to the center of the side of the brush rod (302) away from the pivot pin (301).

4. The automobile engine exhaust purification treatment device according to claim 1, characterized in that, The heat-conducting component (500) includes an arc-shaped heat-conducting plate (501), a strip-shaped heat-conducting sheet (502), and an arc-shaped heat-conducting sheet (503). The arc-shaped heat-conducting plate (501) is embedded in the curved side wall of the jacket shell (400). Multiple arc-shaped heat-conducting plates (501) are located inside the jacket shell (400) and are distributed along the length direction of the arc-shaped heat-conducting plate (501). The strip-shaped heat-conducting sheet (502) is located on the side of the arc-shaped heat-conducting plate (501) away from the arc-shaped heat-conducting plate (501) and is located in the inner cavity of the catalyst shell (100).

5. The automobile engine exhaust purification treatment device according to claim 3, characterized in that, The linkage mechanism (600) includes an arc-shaped pressure plate (601), a sliding plate (602), a sealing lifting component (603), a rack (604), and a gear (605). The sealing lifting component (603) is installed on the side wall of the catalyst housing (100) near the end of the intake pipe (101). The sliding plate (602) slides through one end of the catalyst housing (100) and is connected to the first piston (403). The arc-shaped pressure plate (601) is connected to the end of the sliding plate (602). One end of the sealing lifting component (603) abuts against the side wall of the arc-shaped pressure plate (601), and the other end of the sealing lifting component (603) is connected to the rack (604). The gear (605) is fitted on the rotating shaft (303), and the gear (605) is meshed with the rack (604).

6. The automobile engine exhaust purification treatment device according to claim 5, characterized in that, The sealing lifting component (603) includes a piston cylinder (6031), a second piston (6032), a pressure rod (6033), a first spring (6034), and an extension column (6035). One end of the pressure rod (6033) abuts against the arc-shaped pressure plate (601), and the other end of the pressure rod (6033) is connected to the second piston (6032). The piston cylinder (6031) is embedded in the side wall of the catalyst shell (100) for the second piston (6032) to slide. The rack (604) has an inverted L-shaped structure, and one end of the rack (604) is connected to the extension column (6035). The other end of the extension column (6035) extends into the piston cylinder (6031) and is connected to the second piston (6032). The first spring (6034) is installed in the piston cylinder (6031), and the first spring (6034) is used to reset the second piston (6032) when it is not compressed.

7. The automobile engine exhaust purification treatment device according to claim 1, characterized in that, A plurality of circumferentially distributed second springs (900) are installed on the side of the first piston (403) near the filter element (200). The end of the second spring (900) away from the first piston (403) is connected to the inner wall of one end of the jacket shell (400).

8. The automobile engine exhaust purification treatment device according to claim 1, characterized in that, The ash guiding component (700) includes an annular cylinder (701), an ash guiding port (702), and an ash discharge port (703). The ash guiding port (702) is installed between the bottom of the catalyst shell (100) and the top of the annular cylinder (701), and the ash guiding port (702) is connected to the inner cavity of the annular cylinder (701). The bottom of the catalyst shell (100) is provided with a strip-shaped opening (103) corresponding to the filter element (200). The ash guiding port (702) is provided to cover the strip-shaped opening (103). The ash discharge port (703) is opened at the bottom of the annular cylinder (701) and distributed along its length.

9. The automobile engine exhaust purification treatment device according to claim 8, characterized in that, The automatic ash removal mechanism (800) includes a rotating tube (801), a paddle (802), a spiral groove (803), a rod (804), and a key (805). The rotating tube (801) is coaxially rotatably disposed inside the annular cylinder (701), and one end of the rotating tube (801) slides through the end of the jacket shell (400) and extends into its inner cavity. Multiple paddles (802) are located inside the annular cylinder (701) and distributed circumferentially along the rotating tube (801). One end of the rod (804) is connected to the first piston (403), and the other end of the rod (804) extends into the rotating tube (801). The spiral groove (803) is disposed on the inner wall of the rotating tube (801). The key (805) is located in the matching spiral groove (803), and the key (805) is installed on the end side wall of the rod (804).

10. The automobile engine exhaust purification treatment device according to claim 9, characterized in that, The length of the paddle (802) is equal to the distance between the inner walls of the two ends of the annular cylinder (701), and the end of the paddle (802) away from the rotating tube (801) is in contact with the inner wall of the annular cylinder (701).

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