Engine exhaust pipe

Abstract

The invention relates to the technical field of engine exhaust pipes, in particular to an engine exhaust pipe which comprises a pipe body and a cleaning assembly. One end of the pipe body is an air inlet and the other end is an air outlet; the cleaning assemblies are located in the pipe body, the two cleaning assemblies are arranged in the pipe length direction of the pipe body in a spaced mode, each cleaning assembly comprises a first cleaning piece and a collecting box, the first cleaning pieces are arranged on the bottom wall of the pipe body and attached to the bottom wall of the pipe body, and the first cleaning pieces are slidably connected to the pipe body in the pipe length direction of the pipe body; the first cleaning piece comprises a first cleaning part, one side of the first cleaning part makes contact with the side wall of the pipe body, and the first cleaning part is obliquely arranged towards the side away from the central axis of the pipe body along the side close to the air inlet; a plurality of first feeding holes are formed in the first cleaning part in the direction perpendicular to the pipe length direction of the pipe body in a penetrating mode, a first material storage space is formed between the first cleaning part and the side wall of the pipe body, and the first feeding holes communicate with the first material storage space. The automatic cleaning device has the effect that the interior of the pipeline can be cleaned more thoroughly, conveniently and automatically.

Description

Technical Field

[0001] This application relates to the technical field of engine exhaust pipes, and in particular, to an engine exhaust pipe. Background Art

[0002] The engine exhaust pipe is one of the indispensable important components in modern industry and is widely used in various mechanical equipment. With the progress of technology, the performance of the engine has been continuously improved, and higher requirements have been put forward for the cleanliness and reliability of the exhaust system. The traditional engine exhaust system mainly relies on regular manual maintenance or simple filtering devices to keep the inside of the pipe clean. Although these methods can meet the basic needs to a certain extent, there are still many deficiencies in actual applications.

[0003] Under the related technology, in order to address these problems, the industry usually adopts the following several methods: one is to design an inner wall surface with a certain roughness and use the frictional force generated by the exhaust gas flow to remove some carbon deposits; the second is to introduce a detachable baffle structure to intercept larger particles at specific positions and clean them by manually removing them; the third is to utilize the high-temperature combustion principle to decompose the attached substances by heating the exhaust gas to make it carry energy. In addition, a more common practice is to install a dust collection box at the end of the pipe to collect solid impurities that fall due to gravity. The above measures are all aimed at extending the service life of the equipment while reducing the failure rate.

[0004] Regarding the above related technology, these conventional means in the prior art generally have a problem - they cannot effectively handle fine particles and oil residue. Especially after long-term operation, due to the lack of an efficient cleaning mechanism, pollutants gradually accumulate, which not only increases the later maintenance cost but also poses a risk of secondary pollution. Therefore, how to achieve more thorough and convenient automatic cleaning inside the pipe has become a key issue to be solved urgently. Summary of the Invention

[0005] In order to achieve more thorough and convenient automatic cleaning inside the pipe, this application provides an engine exhaust pipe.

[0006] An engine exhaust pipe provided by this application adopts the following technical solution: An engine exhaust pipe includes a pipe body and a cleaning component; One end of the pipe body is an air inlet, and the other end is an exhaust outlet; The cleaning component is located inside the pipe body. Two cleaning components are arranged at intervals along the length direction of the pipe body. The cleaning component includes a first cleaning member and a collection box. The first cleaning member is arranged on the bottom wall of the pipe body and is attached to the bottom wall of the pipe body. The first cleaning member is slidably connected to the pipe body along the length direction of the pipe body; The first cleaning member includes a first cleaning portion, one side of the first cleaning portion is in contact with the side wall of the tube body, one of the first cleaning portions is inclined towards the side away from the central axis of the tube body along the side close to the air inlet, and the two first cleaning portions are symmetrically arranged; A plurality of first feed holes are formed through the first cleaning portion along the direction perpendicular to the tube length of the tube body. There is a first storage space between the first cleaning portion and the side wall of the tube body, and the first feed holes communicate with the first storage space; It further includes a plurality of collection boxes. The initial positions of the two first cleaning members are arranged close to each other, and each collection box is arranged corresponding to the initial position of one of the first cleaning portions. One end of the collection box communicates with the bottom wall of the tube body.

[0007] By adopting the above technical solution, by arranging the cleaning assembly, the first cleaning member slides along the length direction of the tube body so that the first cleaning member scrapes off the particulate matter on the inner wall of the tube body. In order to effectively clean and collect the dust particulate matter, by arranging the first cleaning portion, the inclined first cleaning portion is in contact with the bottom wall of the tube body to facilitate scraping off the soot particles. When there is too much dust, it will enter the first storage space through the first feed port. When the first cleaning portion slides along the tube length direction of the tube body towards the side away from the air inlet until the first storage space corresponds to the inner cavity of the collection box, the dust particles fall into the collection box for collection, thereby realizing the cleaning and collection of the dust on the inner wall of the tube body.

[0008] Optionally, it further includes a first driving assembly. The first driving assembly includes a biaxial motor and two first screws. One first screw is provided at each end of the biaxial motor. The output shaft of the biaxial motor is coaxially and fixedly connected to the first screw. The thread directions of the two first screws are opposite. The housing of the biaxial motor is fixedly connected to the inner wall of the tube body through a first mounting bracket. The first screw is parallel to the tube length direction of the tube body. The first cleaning member is directly or indirectly sleeved on the first screw, and the first cleaning member slides along the length direction of the first screw.

[0009] By adopting the above technical solution, in order to drive the first cleaning member to slide, by arranging the first driving assembly, the biaxial motor drives the two first screws to rotate, driving the first cleaning member to slide along the length direction of the first screw.

[0010] Optionally, the cleaning assembly further includes a collar and a first connecting rod. The collar is sleeved on the first screw and slides along the length direction of the first screw. One end of the first connecting rod is fixedly connected to the collar, and the other end is fixedly connected to the first cleaning member.

[0011] By adopting the above technical solution, in order to connect the first cleaning member to the first screw, by arranging the collar and the first connecting rod, the connection between the first cleaning rod and the tube body can be better realized.

[0012] Optionally, the first cleaning member further includes a second cleaning portion. One side of the second cleaning portion is fixedly connected to the first connecting rod, and the other side is in contact with the bottom wall of the tube body. The first cleaning portion is fixedly connected to the second cleaning portion. A second storage space is formed between the second cleaning portion and the first cleaning portion, and the second storage space communicates with the inner cavity of the collection box.

[0013] By adopting the above technical solution, when the first cleaning member slides towards the collection box, in order to enable the dust particles in the first storage space to smoothly enter the collection box, the first cleaning member further includes a second cleaning portion. Dust enters the second storage space through the first feed hole, and the second storage space collects the dust.

[0014] Optionally, the cleaning assembly further includes a second cleaning member. The second cleaning member includes a plurality of cleaning strips. The plurality of cleaning strips are distributed on the side wall and the top wall of the tube body, and the cleaning strips slide along the tube length direction of the tube body.

[0015] By adopting the above technical solution, in order to further improve the cleaning degree of the dust particles on the inner wall of the tube body, the cleaning assembly further includes a second cleaning member. The plurality of cleaning strips slide along the tube length direction of the tube body, which can enable the cleaning strips to scrape the particulate matter on the top wall and the side wall of the tube body. The particulate matter further falls to the bottom wall of the tube body, and the first cleaning portion scrapes and cleans the particulate matter on the bottom wall of the tube body.

[0016] Optionally, the cleaning assembly includes a second connecting rod. One end of the second connecting rod is fixedly connected to the collar, and the other end is fixedly connected to the cleaning strip.

[0017] By adopting the above technical solution, in order to make the second cleaning member slide, by providing a second connecting rod, the second connecting rod is fixedly connected between the collar and the cleaning strip, so that the first screw drives the second cleaning member to slide through the collar and the second connecting rod.

[0018] Optionally, a discharge hole is formed on the side of the collection box away from the tube body, and a plug bolt is threadedly connected to the discharge hole to seal the collection box.

[0019] By adopting the above technical solution, in order to facilitate the discharge of the dust particles in the collection box, a discharge hole is formed on the side of the collection box away from the tube body. Personnel can screw the plug bolt to discharge the dust particles from the collection box.

[0020] Optionally, it further includes a first guide rod. The first guide rod is parallel to the first screw. The first guide rod passes through and is fixedly connected to the first mounting bracket, and the first guide rod passes through the second connecting rod, and the second connecting rod slides along the rod length direction of the first guide rod.

[0021] By adopting the above technical solution, by providing the first guide rod, the first guide rod guides the sliding of the first cleaning member along the first screw.

[0022] Optionally, it further includes a cover plate, the cover plate is arranged on the side of the first screw close to the bottom wall of the pipe body, the cover plate is slidably connected to the pipe body in a direction perpendicular to the pipe length direction of the pipe body, and the cover plate matches the collection box to close the connection between the collection box and the pipe body.

[0023] By adopting the above technical solution, when the gas discharged from the engine enters the pipe body, in order to prevent the gas from entering the collection box and being unable to be discharged, by providing a cover plate, the cover plate is slidably connected to the pipe body in a direction perpendicular to the pipe length direction of the pipe body to close the collection box, reducing the situation where the discharged gas enters the collection box and cannot be discharged.

[0024] Optionally, it further includes a second driving assembly, the second driving assembly includes a first bevel gear, a second bevel gear and a second screw, the first bevel gear is coaxially sleeved on the first screw, the second screw is perpendicular to the pipe length direction of the pipe body, one end of the second screw is rotatably connected to the bottom wall of the pipe body, the second bevel gear is coaxially sleeved on the second screw, the second bevel gear meshes with the first bevel gear, and the cover plate is directly or indirectly sleeved on the second screw and slides along the length direction of the second screw; The first cleaning rod is fixedly connected to the first cleaning part, so that an avoidance space for the cover plate to slide is formed between the first cleaning rod and the second screw.

[0025] By adopting the above technical solution, in order to drive the cover plate to slide along the pipe body, by providing a second driving assembly, the first screw drives the two first cleaning members to slide towards the air inlet and the exhaust port respectively, and at the same time drives the first bevel gear and the second bevel gear to rotate. The second screw drives the cover plate to slide towards the side close to the collection box to close the collection box by the cover plate; when the first screw drives the two cleaning members to slide towards each other, the cover plate slides along the first screw towards the side away from the collection box, thereby opening the collection box to facilitate pushing the particulate matter in the second storage space into the collection box. In order to prevent the first cleaning rod from affecting the sliding of the cover plate, the first cleaning rod is fixedly connected to the first cleaning part, so that an avoidance space for the cover plate to slide is formed between the first cleaning rod and the second screw.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. In this application, by setting up a cleaning component, the first cleaning part which is inclined contacts with the bottom wall of the pipe body, so as to scrape off soot particles. When there is too much dust, it will enter the first storage space through the first feed port. When the first cleaning part slides along the length direction of the pipe body towards the side away from the air inlet until the first storage space corresponds to the inner cavity of the collection box, the dust particles fall into the collection box for collection, thus realizing the cleaning and collection of the dust on the inner wall of the pipe body; 2. In this application, by setting up a cover plate, when the first cleaning rod cleans the inner wall of the pipe body, the cover plate slides to the opening of the collection box to reduce the engine exhaust gas from entering the collection box, avoiding that some subsequent gases cannot undergo catalytic reactions. Description of the Drawings

[0027] Figure 1 is a schematic structural diagram of the pipe body and the cleaning component of this application; Figure 2 is a schematic structural diagram of the first cleaning part of this application; Figure 3 is a schematic structural diagram of the collection box of this application; Figure 4 is a schematic structural diagram of the second cleaning part of this application; Figure 5 is a schematic structural diagram of the cover plate and the pipe body of this application; Figure 6 is a schematic structural diagram of the second driving component of this application; Description of the Reference Numerals: 1, pipe body; 11, air inlet; 12, exhaust port; 2, cleaning component; 21, first cleaning part; 211, first cleaning portion; 2111, first feed hole; 2112, first storage space; 212, second cleaning part; 2121, second storage space; 23, collar; 24, first connecting rod; 25, second cleaning part; 251, cleaning strip; 26, second connecting rod; 3, collection box; 31, discharge hole; 32, plugging bolt; 4, first driving component; 41, bi-axial motor; 42, first screw; 43, first mounting bracket; 5, first guide rod; 6, cover plate; 7, second driving component; 71, first bevel gear; 72, second bevel gear; 73, second screw; 74, second mounting bracket; 8, second guide rod. Detailed Embodiments

[0028] The following will Figure 1-6 further elaborate on this application in detail.

[0029] The embodiment of this application discloses an engine exhaust pipe. Refer to Figure 1, the engine exhaust pipe includes a pipe body 1 and a cleaning assembly 2; one end of the pipe body 1 is an air inlet 11, and the other end is an exhaust port 12; the cleaning assembly 2 is located inside the pipe body 1, and two cleaning assemblies 2 are arranged at intervals along the length direction of the pipe body 1. The cleaning assembly 2 includes a first cleaning member 21 and a collection box 3. The first cleaning member 21 is arranged on the bottom wall of the pipe body 1 and fits with the bottom wall of the pipe body 1. The first cleaning member 21 is slidably connected to the first cleaning member 21 along the length direction of the pipe body 1. The sliding of the first cleaning member 21 along the pipe body 1 enables the first cleaning member 21 to clean the soot particles on the inner wall of the pipe passage.

[0030] Refer to Figure 1 and Figure 2 , in order to enable the first cleaning member 21 to better clean the inner wall of the pipe body 1, the first cleaning member 21 includes a first cleaning portion 211. One side of the first cleaning portion 211 is in contact with the side wall of the pipe body 1. The first cleaning member 21 includes a first cleaning portion 211. One first cleaning portion 211 is inclined toward the side away from the central axis of the pipe body 1 along the side close to the air inlet 11. The two first cleaning portions 211 are symmetrically arranged. The first cleaning portion 211 is provided with a plurality of first feeding holes 2111 penetrating along the direction perpendicular to the length direction of the pipe body 1. There is a first storage space 2112 between the first cleaning portion 211 and the side wall of the pipe body 1. The first feeding holes 2111 communicate with the first storage space 2112. When the first cleaning member 21 slides along the length direction of the pipe body 1, the inclined first cleaning portion 211 contacts the bottom wall of the pipe body 1 to facilitate scraping off the soot particles.

[0031] Refer to Figure 1 , the soot particles will further gather on the inclined surface of the first cleaning portion 211. When too much gathers, it further enters the first storage space 2112 through the first feeding holes 2111. In order to collect the cleaned soot particles, two collection boxes 3 are provided on the bottom wall of the pipe body 1. One end of the collection box 3 communicates with the bottom wall of the pipe body 1. The initial positions of the two first cleaning members 21 are arranged close to each other, and each collection box 3 is arranged corresponding to the initial position of one first cleaning portion 211. The first cleaning portion 211 slides along the length direction of the pipe body 1 toward the side close to the air inlet 11 to scrape and clean the dust particles. The dust gathers in the first storage space 2112. When the first cleaning portion 211 slides along the length direction of the pipe body 1 toward the side away from the air inlet 11 until the first storage space 2112 corresponds to the inner cavity of the collection box 3, the dust particles fall into the collection box 3 for collection.

[0032] Refer to Figure 1, To drive the first cleaning member 21 to slide, the engine exhaust pipe further includes a first driving assembly 4. The first driving assembly 4 includes a double-shaft motor 41 and two first screws 42. In this embodiment, the double-shaft motor 41 is a micro double-shaft motor 41. The double-shaft motor 41 is fixedly connected to the inner side wall of the pipe body 1 through a first mounting bracket 43. Output shafts at both ends of the double-shaft motor 41 are each fixedly connected with a first screw 42. The thread directions of the two first screws 42 are opposite. The first screw 42 is parallel to the pipe length direction of the pipe body. The first screw 42 is rotatably connected to the pipe body 1. The rotation axis of the first screw 42 along the pipe body 1 is parallel to the pipe length direction of the pipe body 1. The first cleaning member 21 is directly or indirectly sleeved on the first screw 42. The first cleaning member 21 slides along the rod length direction of the first screw 42. The double-shaft motor 41 drives the two first screws 42 to rotate, driving the first cleaning member 21 to slide along the rod length direction of the first screw 42.

[0033] Refer to Figure 1 , To connect the first cleaning member 21 to the first screw 42, the cleaning assembly 2 further includes a collar 23 and a first connecting rod 24. The collar 23 is sleeved on the first screw 42 and slides along the rod length direction of the first screw 42. One end of the first connecting rod 24 is fixedly connected to the collar 23, and the other end is fixedly connected to the first cleaning member 21 to achieve the connection between the first cleaning member 21 and the first screw 42.

[0034] Refer to Figure 2 , When the first cleaning member 21 slides toward the side of the collection box 3, to enable the dust particles in the first storage space 2112 to smoothly enter the collection box 3, the first cleaning member 21 further includes a second cleaning part 212. One side of the second cleaning part 212 is fixedly connected to the end of the first connecting rod 24, and the other side is in contact with the bottom wall of the pipe body 1. The first cleaning part 211 is fixedly connected to the second cleaning part 212. A second storage space 2121 is formed between the second cleaning part 212 and the first cleaning part 211. The second storage space 2121 is communicated with the inner cavity of the collection box 3. By providing the second cleaning part 212, the dust particles can be gathered in the second storage space 2121.

[0035] Refer to Figure 3 , To facilitate the discharge of the dust particles in the collection box 3, a discharge hole 31 is provided on the side of the collection box 3 away from the pipe body 1. A plug bolt 32 is threadedly connected to the discharge hole 31 to close the collection box 3 by the plug bolt 32, so that personnel can screw the plug bolt 32 to discharge the dust particles from the collection box 3.

[0036] Refer to Figure 4, in order to further improve the cleaning degree of the dust particles on the inner wall of the pipe body 1, the cleaning assembly 2 further includes a second cleaning member 25. The second cleaning member 25 includes a plurality of cleaning strips 251. The plurality of cleaning strips 251 are distributed on the side wall and the top wall of the pipe body 1. The cleaning strips 251 slide along the pipe length direction of the pipe body 1. In this embodiment, there are three cleaning strips 251, and the cleaning strips 251 are arc-shaped. In order to connect the cleaning strips 251 with the first screw rod 42, the cleaning assembly 2 further includes a second connecting rod 26. The collar 23 is sleeved on the first screw rod 42 and slides along the rod length direction of the first screw rod 42. One end of the second connecting rod 26 is fixedly connected to the collar 23, and the other end is fixedly connected to the cleaning strip 251. The plurality of cleaning strips 251 slide along the pipe length direction of the pipe body 1, which can enable the cleaning strips 251 to scrape the particulate matter on the top wall and the side wall of the pipe body 1. The particulate matter further falls to the bottom wall of the pipe body 1, and the first cleaning part 211 scrapes and cleans the particulate matter on the bottom wall of the pipe body 1.

[0037] Referring to Figure 4 , in order to guide the sliding of the first cleaning member 21 along the first screw rod 42, the engine exhaust pipe further includes a first guide rod 5. The first guide rod 5 is parallel to the first screw rod 42. The first guide rod 5 passes through and is fixedly connected to the first mounting bracket 43, and the first guide rod 5 passes through the second connecting rod 26. The second connecting rod 26 slides along the rod length direction of the first guide rod 5.

[0038] Referring to Figure 5 , when the gas discharged from the engine enters the pipe body, in order to prevent the gas from entering the collection box 3 and being unable to be discharged, the engine exhaust pipe further includes two cover plates 6. The cover plates 6 are arranged on one side of the first screw rod 42 close to the bottom wall of the pipe body 1. The cover plates 6 are slidably connected to the pipe body 1 along a direction perpendicular to the pipe length direction of the pipe body 1 to close the collection box 3 and reduce the discharged gas from entering the collection box 3 and being unable to be discharged.

[0039] Referring to Figure 5 and Figure 6 , in order to drive the cover plate 6 to slide, the engine exhaust pipe further includes a second driving assembly 7. The second driving assembly 7 includes a first bevel gear 71, a second bevel gear 72 and a second screw rod 73. The first bevel gear 71 is coaxially sleeved on the first screw rod 42. The second screw rod 73 is perpendicular to the pipe length direction of the pipe body 1. One end of the second screw rod 73 is rotatably connected to the bottom wall of the pipe body 1. The second bevel gear 72 is coaxially sleeved on the second screw rod 73. The second bevel gear 72 meshes with the first bevel gear 71. The cover plate 6 is connected to the second screw rod 73 through a second mounting bracket 74. One end of the second mounting bracket 74 is sleeved on the second screw rod 73 and slides along the rod length direction of the second screw rod 73, and the other end is fixedly connected to the cover plate 6, so that the cover plate 6 slides to the upper part of the connection between the collection box 3 and the pipe body 1 to reduce the gas from entering the collection box 3. In this embodiment, the second mounting bracket 74 is L-shaped so that the cover plate 6 can close the collection box 3.

[0040] Reference Figure 5 and Figure 6 When cleaning the pipe body 1, there are the following two stages: The first stage: When the dual-axis motor 41 drives the first screw 42 to rotate, the first screw 42 drives the two first cleaning members 21 to slide towards the air inlet 11 and the exhaust port 12 respectively, and at the same time drives the first bevel gear 71 and the second bevel gear 72 to rotate, and drives the cover plate 6 to slide towards the side close to the collection box 3 through the second screw 73, so as to close the collection box 3 by the cover plate 6; The second stage: When the first screw 42 drives the two cleaning members to slide towards the side close to each other, the cover plate 6 slides along the first screw 42 towards the side away from the collection box 3, so as to open the collection box 3, facilitating the pushing of the particulate matter in the second storage space 2121 into the collection box 3.

[0041] Referring to the figure, in the second stage, in order to prevent the first cleaning rod from affecting the sliding of the cover plate 6, the first cleaning rod is fixedly connected to the first cleaning portion 211, so as to form a clearance space for the sliding of the cover plate 6 between the first cleaning rod and the second screw 73.

[0042] Reference Figure 6 In order to guide the sliding of the cover plate 6 along the second screw 73, the engine exhaust pipe further includes a second guide rod 8. The second guide rod 8 is parallel to the second screw 73. One end of the second guide rod 8 is fixedly connected to the bottom wall of the pipe body. The second guide rod 8 passes through the second mounting bracket 74. The second mounting bracket 74 slides along the length direction of the second guide rod 8. The second guide rod 8 and the second screw 73 are fixedly connected through a mounting seat, so as to guide the sliding of the cover plate 6 by the second guide rod 8.

[0043] The implementation principle of an engine exhaust pipe according to an embodiment of the present application is as follows: The gas discharged from the engine enters the pipe body 1 from the air inlet 11 and is then discharged from the exhaust port 12. In order to clean the dust particles on the inner wall of the pipe body 1, the dual-axis motor 41 drives the first screw 42 to rotate. The first screw 42 drives the two first cleaning members 21 to slide towards the air inlet 11 and the exhaust port 12 respectively. The first cleaning portion 211 slides towards the side close to the air inlet 11 along the length direction of the pipe body 1 to scrape and clean the dust particles. The dust accumulates in the first storage space 2112. At the same time, the first bevel gear 71 and the second bevel gear 72 are driven to rotate, and the cover plate 6 is driven to slide towards the side close to the collection box 3 through the second screw 73, so as to close the collection box 3 by the cover plate 6 and reduce the gas entering the collection box 3; When the first screw 42 rotates and drives the two first cleaning portions 211 to slide towards the side close to each other along the length direction of the pipe body 1 until the second storage space 2121 corresponds to the inner cavity of the collection box 3, the dust particles fall into the collection box 3 for collection. At this time, the cover plate 6 also slides to a position separated from the collection box 3.

[0044] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. An engine exhaust pipe, characterized in that: It comprises a tube body (1) and a cleaning component (2); One end of the tube body (1) is an air inlet (11), and the other end is an air outlet (12); The cleaning assembly (2) is located in the tube body (1), and two cleaning assemblies (2) are arranged at intervals along the tube length direction of the tube body (1). The cleaning assembly (2) comprises a first cleaning piece (21) and a collection box (3). The first cleaning piece (21) is arranged on the bottom wall of the tube body (1) and is in contact with the bottom wall of the tube body (1). The first cleaning piece (21) is slidably connected to the tube body (1) along the tube length direction of the tube body (1); The first cleaning member (21) comprises a first cleaning portion (211), one side of the first cleaning portion (211) contacts the side wall of the tube body (1), one of the first cleaning portions (211) is arranged obliquely along a side close to the air inlet (11) and away from the central axis of the tube body (1), and the two first cleaning portions (211) are arranged symmetrically; The first cleaning portion (211) is provided with a plurality of first material feeding holes (2111) extending perpendicularly to the length direction of the tube body (1), a first material storage space (2112) is provided between the first cleaning portion (211) and the side wall of the tube body (1), and the first material feeding holes (2111) are in communication with the first material storage space (2112); It also comprises a plurality of collection boxes (3), the initial positions of two of the first cleaning parts (21) being arranged close to each other, each of the collection boxes (3) being arranged corresponding to the initial position of one of the first cleaning parts (211), and one end of the collection box (3) being connected to the bottom wall of the tube body (1).

2. An engine exhaust pipe according to claim 1, characterized in that: The invention also comprises a first driving assembly (4), wherein the first driving assembly (4) comprises a double-axis motor (41) and two first screw rods (42), wherein each end of the double-axis motor (41) is provided with a first screw rod (42), wherein the screw threads of the two first screw rods (42) are in opposite directions, wherein the output shaft of the double-axis motor (41) is coaxially fixedly connected to the first screw rod (42), wherein the housing of the double-axis motor (41) is fixedly connected to the inner wall of the tube body (1) via a first mounting frame (43), wherein the first screw rod (42) is parallel to the tube length direction of the tube body (1), wherein the first cleaning member (21) is directly or indirectly sleeved on the first screw rod (42), and wherein the first cleaning member (21) slides along the length direction of the first screw rod (42).

3. An engine exhaust pipe according to claim 2, characterized in that: The cleaning assembly (2) further comprises a collar (23) and a first connecting rod (24); the collar (23) is sleeved on the first screw rod (42) and slides along the length direction of the first screw rod (42); one end of the first connecting rod (24) is fixedly connected to the collar (23), and the other end is fixedly connected to the first cleaning member (21).

4. An engine exhaust pipe according to claim 3, characterized in that: The first cleaning member (21) further comprises a second cleaning portion (212), one side of the second cleaning portion (212) being fixedly connected to the first connecting rod (24), and the other side being in contact with the bottom wall of the tube body (1), the first cleaning portion (211) being fixedly connected to the second cleaning portion (212), a second material storage space (2121) being formed between the second cleaning portion (212) and the first cleaning portion (211), and the second material storage space (2121) being in communication with the inner cavity of the collection box (3).

5. The engine exhaust pipe according to claim 3, characterized in that: The cleaning assembly (2) further comprises a second cleaning member (25), wherein the second cleaning member (25) comprises a plurality of cleaning strips (251), wherein the plurality of cleaning strips (251) are distributed on the side walls and the top wall of the tube body (1), and wherein the cleaning strips (251) slide along the tube length direction of the tube body (1).

6. An engine exhaust pipe according to claim 5, characterized in that: The cleaning assembly (2) further comprises a second connecting rod (26), one end of the second connecting rod (26) being fixedly connected to the sleeve ring (23) and the other end of the second connecting rod (26) being fixedly connected to the cleaning strip (251).

7. The engine exhaust pipe according to claim 1, characterized in that: A discharge hole (31) is provided on a side of the collection box (3) away from the tube body (1), and a sealing bolt (32) is threadedly connected to the discharge hole (31) to seal the collection box (3).

8. The engine exhaust pipe according to claim 6, characterized in that: It also includes a first guide rod (5), the first guide rod (5) is parallel to the first screw rod (42), the first guide rod (5) is passed through and fixedly connected to the first mounting frame (43), and the first guide rod (5) is passed through the second connecting rod (26), and the second connecting rod (26) slides along the length direction of the first guide rod (5).

9. The engine exhaust pipe according to claim 2, characterized in that: It also includes a cover plate (6), which is arranged on one side of the first screw rod (42) close to the bottom wall of the tube body (1), and the cover plate (6) is slidably connected to the tube body (1) in a direction perpendicular to the length of the tube body (1). The cover plate (6) matches the collection box (3) to seal the connection between the collection box (3) and the tube body (1).

10. An engine exhaust pipe according to claim 9, characterized in that: The invention also comprises a second driving assembly (7), wherein the second driving assembly (7) comprises a first bevel gear (71), a second bevel gear (72) and a second screw (73), wherein the first bevel gear (71) is coaxially sleeved on the first screw (42), the second screw (73) is perpendicular to the length direction of the tube body (1), one end of the second screw (73) is rotatably connected to the bottom wall of the tube body (1), the second bevel gear (72) is coaxially sleeved on the second screw (73), the second bevel gear (72) is meshed with the first bevel gear (71), and the cover plate (6) is directly or indirectly sleeved on the second screw (73) and slides along the length direction of the second screw (73); The first cleaning rod is fixedly connected to the first cleaning portion (211), so that an escape space is formed between the first cleaning rod and the second screw rod (73) to allow the cover plate (6) to slide.

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