A car muffler

Abstract

The present application relates to the technical field of mufflers, and discloses a car muffler, which is mainly composed of a sound-absorbing main board, a sound-absorbing auxiliary board, a partition mechanism and an exhaust mechanism. A partition mechanism is movably arranged inside an outer shell between two groups of the sound-absorbing auxiliary boards, and an exhaust mechanism is fixedly arranged inside the partition mechanism. In the present invention, when the gas moves in the outer shell, the gas is acted upon by the two groups of partition mechanisms and the exhaust mechanism thereon to move in a circuitous and straight-through alternating manner, thereby causing the gas to be constantly reflected and consumed between the first partition plate, the second partition plate and the third partition plate during the movement, and to be frictionally absorbed by the sound-absorbing main board and the sound-absorbing auxiliary board, thereby causing its energy to decay, effectively improving the outer shell's ability to absorb noise in the gas, achieving full noise elimination, and causing impurities in the gas to fully adhere to the sound-absorbing main board. Only by disassembling the fixed components and the sound-absorbing main board, the sound-absorbing main board can be replaced and the impurities cleaned.

Description

Technical Field

[0001] The present application relates to the technical field of mufflers, and in particular to an automobile muffler. Background Art

[0002] During the exhaust process of the automobile engine, the gas rushes out of the exhaust port quickly. Due to the huge difference in pressure and speed with the outside air, huge noise will be generated. Therefore, it is generally necessary to install a muffler to reduce the noise generated by the automobile engine when it is working. The existing automobile muffler uses absorption and reflection technology to reduce and attenuate the pulsation of exhaust pressure to achieve the purpose of eliminating noise.

[0003] However, the existing automobile mufflers still have some defects during use: the commonly used automobile mufflers are roundabout mufflers and straight-through mufflers. The roundabout mufflers continuously reflect and absorb gas noise during use, and have a better muffler effect, but the exhaust flow path is complicated, which is not conducive to cleaning the impurities inside it, resulting in a short service life of the muffler. The straight-through muffler has a simple and smooth exhaust path, which is conducive to high-speed exhaust and is easy to clean and replace, but has poor noise absorption capacity, resulting in a large exhaust noise. Summary of the invention

[0004] The present application proposes an automobile muffler, which has the advantages of effectively enhancing the sound absorption performance and facilitating the cleaning of impurities and replacement of parts, so as to solve the problems of the complex exhaust path of the roundabout muffler, which is not conducive to exhaust, cleaning and poor stability of the muffler performance, and the low muffler performance caused by the simple exhaust path of the straight-through muffler.

[0005] To achieve the above purpose, the present application adopts the following technical solution: an automobile muffler, comprising:

[0006] A working mechanism, used to provide a processing space for eliminating noise, the working mechanism comprising an outer shell and a fixing component, and the fixing components are fixedly arranged at both ends of the outer shell;

[0007] Sound-absorbing main board, the outer shell has two sound-absorbing main boards movably sleeved inside, and the two sound-absorbing main boards are symmetrically arranged to absorb noise;

[0008] The outer shell between the two sound-absorbing main boards has seven groups of sound-absorbing auxiliary boards movably sleeved therein, and the seven groups of sound-absorbing auxiliary boards are linearly arranged in a horizontal direction, the number of each group of sound-absorbing auxiliary boards is two, and the two sound-absorbing auxiliary boards are symmetrically arranged to cooperate with the sound-absorbing main board to absorb noise;

[0009] A partition mechanism is movably provided inside the outer shell between the two groups of the sound-absorbing auxiliary panels, and the partition mechanism includes a first partition plate, a second partition plate and a third partition plate, and is used to divide the inner space of the outer shell into a plurality of chambers to achieve sufficient reflection and absorption of gas noise;

[0010] An exhaust mechanism is fixedly arranged inside the partition mechanism, and the exhaust mechanism includes an exhaust pipe, one end of the exhaust pipe is fixedly sleeved with the first partition plate, and the other end of the exhaust pipe passes through the second partition plate, the exhaust pipe is bent in shape, and the front section of the exhaust pipe is a horizontal section, and the rear section of the exhaust pipe is an inclined section, a threaded groove is provided inside the horizontal section of the exhaust pipe, and a plurality of small holes are provided on the wall surface of the inclined section of the exhaust pipe for guiding the gas to move in a circuitous manner, and the partition mechanism and the exhaust mechanism are used to divide the space inside the outer shell into different chambers, so that the gas moves alternately in a circuitous manner and in a straight manner when moving.

[0011] Furthermore, the fixing assembly includes:

[0012] A fixing plate, both ends of the outer shell are provided with fixing grooves, and the outer shell is movably connected with the fixing plate through the fixing grooves, the wall surface of the outer shell is threadedly provided with fixing bolts, and the outer shell is fixedly connected with the fixing plate through the fixing bolts;

[0013] A fixed pipe is fixedly connected to the middle of the fixed plate.

[0014] Furthermore, the sound absorbing main board is made of high temperature resistant sound absorbing material, and the inner wall of the sound absorbing main board is a rough wall surface. The shape of the sound absorbing main board is arc-shaped, and the curvature of the sound absorbing main board is adapted to the outer shell.

[0015] Furthermore, the sound-absorbing auxiliary panel is made of high-temperature resistant sound-absorbing material, and the material of the sound-absorbing auxiliary panel is the same as that of the sound-absorbing main board. The inner wall of the sound-absorbing auxiliary panel is a smooth wall surface. The shape of the sound-absorbing auxiliary panel is arc-shaped, and the arc of the sound-absorbing auxiliary panel is adapted to the outer shell. The left and right wall surfaces of the sound-absorbing auxiliary panel are provided with card slots, and the sound-absorbing auxiliary panel is movably connected to the sound-absorbing main board through the card slots.

[0016] Furthermore, there are two groups of partition mechanisms, and the two groups of partition mechanisms are linearly arranged in the horizontal direction. The first partition plate, the second partition plate and the third partition plate are fixedly connected to the outer shell by fastening bolts, and the front and rear walls of the first partition plate, the second partition plate and the third partition plate are fixedly connected with sound-absorbing auxiliary plates. The left and right walls of the first partition plate, the second partition plate and the third partition plate are provided with card slots, and the first partition plate, the second partition plate and the third partition plate are movably connected to the sound-absorbing main board through the card slots.

[0017] Furthermore, the internal space of the outer shell is divided into seven chambers by two sets of partition mechanisms, and according to the direction of gas movement, they are the first chamber, the second chamber, the third chamber, the fourth chamber, the fifth chamber, the sixth chamber and the seventh chamber, and a number of transverse holes are opened on the third partition plate.

[0018] Furthermore, the exhaust mechanism is fixedly sleeved on the first partition plate and the second partition plate, and the exhaust mechanism is arranged at an angle, two groups of exhaust mechanisms are arranged in the outer shell, and a group of exhaust mechanisms is arranged in a group of partition mechanisms, the number of exhaust mechanisms in a group is four, and the four exhaust mechanisms are evenly arranged around the first partition plate.

[0019] Furthermore, the exhaust mechanism further comprises:

[0020] A movable part is movably arranged in the exhaust pipe, which is used to enhance the effect of the exhaust mechanism in eliminating noise and to improve the effect of the exhaust mechanism in cleaning impurities.

[0021] Furthermore, the movable part comprises:

[0022] A movable rope, wherein the movable rope is made of a high temperature resistant and wear resistant material;

[0023] Active balls, both ends of the active rope are movably connected with active balls, one end of the active rope passes through the wall of the exhaust pipe at the intersection of the horizontal section and the inclined section, and the wall of the exhaust pipe is movably connected with one active ball, the other end of the active rope passes through the inclined section of the exhaust pipe, and the other active ball is located outside the exhaust pipe;

[0024] Connecting balls: a plurality of connecting balls are arranged on the outer wall of the movable rope in the exhaust pipe, and the connecting balls are spirally arranged on the movable rope.

[0025] By setting up an exhaust mechanism, when the gas passes through the exhaust mechanism, the gas is affected by the horizontal section of the exhaust pipe and makes a spiral motion in the inclined section of the exhaust pipe, thereby pushing the movable part to rotate and swing, which not only effectively and fully disturbs the sound waves in the gas and makes the sound waves collide with each other to achieve the purpose of offsetting the noise and further improve the silencing performance of the muffler, but also effectively cleans the inner wall of the exhaust pipe, further reduces the possibility of impurities adhering to the exhaust mechanism, thereby reducing the difficulty of cleaning impurities in the partition mechanism and extending the service life of the muffler.

[0026] The beneficial effects of the present invention are as follows:

[0027] The present application provides an automobile silencer, which is provided with a sound-absorbing main board, a sound-absorbing auxiliary board, a partition mechanism and an exhaust mechanism in a working mechanism, and there are two groups of partition mechanisms, each group of partition mechanisms is composed of a first partition plate, a second partition plate and a third partition plate, and an exhaust mechanism is arranged between the first partition plate and the second partition plate. When the gas moves in the outer shell, the gas is acted upon by the two groups of partition mechanisms and the exhaust mechanisms thereon to move in a circuitous and straight-through alternating manner, thereby causing the gas to be continuously reflected and consumed between the first partition plate, the second partition plate and the third partition plate during the movement, and to be frictionally absorbed by the sound-absorbing main board and the sound-absorbing auxiliary board, thereby causing its energy to decay, effectively improving the outer shell's ability to absorb noise in the gas and achieving full elimination of noise, and causing impurities in the gas to fully adhere to the sound-absorbing main board. In the later stage, only the fixing components and the sound-absorbing main board need to be disassembled to achieve the replacement of the sound-absorbing main board and the cleaning of impurities, thereby extending the service life of the silencer. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below. Obviously, the drawings in the following description are only embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the provided drawings without creative work:

[0029] Figure 1 It is a three-dimensional structural diagram of the whole of the present invention;

[0030] Figure 2 It is an overall three-dimensional structural diagram of the working mechanism section of the present invention;

[0031] Figure 3 It is a front view cross-sectional three-dimensional structure diagram of the whole of the present invention;

[0032] Figure 4 It is a side cross-sectional three-dimensional structural diagram of the whole of the present invention;

[0033] Figure 5 It is a cross-sectional three-dimensional structural diagram of the working mechanism in the present invention;

[0034] Figure 6 It is a three-dimensional structural diagram of the sound-absorbing main board, the sound-absorbing auxiliary board, the partition mechanism and the exhaust mechanism in the present invention;

[0035] Figure 7 It is a three-dimensional structural diagram of the sound-absorbing main board of the present invention;

[0036] Figure 8 It is a three-dimensional structural diagram of the sound-absorbing auxiliary plate, the partition mechanism and the exhaust mechanism in the present invention;

[0037] Fig. 9It is a three-dimensional structural diagram of the separation mechanism and the exhaust mechanism in the present invention;

[0038] Fig.10 A three-dimensional structural diagram of a set of separation mechanisms in the present invention;

[0039] Fig.11 A three-dimensional structural diagram of a set of exhaust mechanisms in the present invention;

[0040] Fig.12 It is a three-dimensional structural diagram of an exhaust mechanism in the present invention;

[0041] Fig.13 It is a cross-sectional three-dimensional structural diagram of an exhaust mechanism in the present invention;

[0042] Fig.14 It is a three-dimensional structural diagram of a movable part in the present invention.

[0043] In the figure: 1. outer shell; 2. fixing assembly; 20. fixing bolt; 21. fixing plate; 22. fixing pipe; 3. sound-absorbing main board; 4. sound-absorbing auxiliary board; 5. partition mechanism; 50. fastening bolt; 51. first partition plate; 52. second partition plate; 53. third partition plate; 6. exhaust mechanism; 61. exhaust pipe; 7. movable part; 71. movable rope; 72. movable ball; 73. connecting ball. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] Embodiment 1, a car muffler, comprising:

[0046] like Figure 1-Figure 5 , working mechanism, the working mechanism includes an outer shell 1 and a fixed component 2, such as Figure 1 The two ends of the outer shell 1 are fixedly provided with fixing components 2. The gas enters from one fixing component 2, is silenced in the process of passing through the outer shell 1, and is finally discharged from the other fixing component 2. The fixing component 2 includes a fixing plate 21 and a fixing pipe 22. Figure 5, both ends of the outer shell 1 are provided with fixing grooves, and the outer shell 1 is movably connected with the fixing plate 21 through the fixing grooves, and the wall of the outer shell 1 is threadedly provided with fixing bolts 20, and the outer shell 1 is fixedly connected with the fixing plate 21 through the fixing bolts 20. When the fixing plate 21 needs to be installed, firstly, one end of the fixing plate 21 is connected with the fixing groove of the outer shell 1, and then the outer shell 1 and the fixing plate 21 are fixed with the fixing bolts 20 at the same time, which effectively improves the stability of the fixing component 2 set on the outer shell 1, and facilitates the disassembly of the fixing component 2, and is easy to update and clean other components in the outer shell 1. The middle part of the fixing plate 21 is fixedly connected with a fixing pipe 22, and the fixing pipe 22 can help the outer shell 1 to be connected to the automobile exhaust system, so that the air exhausted by the automobile enters the outer shell 1 to achieve silencing. In summary, the working mechanism is used to provide a processing space for eliminating noise.

[0047] like Figure 1-Figure 4 , Figure 6-Figure 7 , sound-absorbing main board 3, two sound-absorbing main boards 3 are movably sleeved inside the outer shell 1, and the two sound-absorbing main boards 3 are symmetrically arranged, such as Figure 7 The sound-absorbing main board 3 is made of high-temperature resistant sound-absorbing material, such as ceramic fiber, and the inner wall of the sound-absorbing main board 3 is a rough wall surface. Because the inner wall of the sound-absorbing main board 3 is uneven, it can not only play a good sound-absorbing role, but also when sound waves enter, part of the sound wave energy is rubbed in the pores of the sound-absorbing main board 3 and converted into heat energy dissipation, thereby weakening the sound waves passing through the sound-absorbing main board 3. It can also play a good role in collecting impurities. When gas carries impurities in, the impurities can adhere to the uneven inner wall of the sound-absorbing main board 3. In the later stage, only the sound-absorbing main board 3 needs to be replaced to clean the impurities in the muffler, and the cleaning is convenient. The shape of the sound-absorbing main board 3 is arc-shaped, and the curvature of the sound-absorbing main board 3 is adapted to the outer shell 1, which effectively ensures that the outer wall of the sound-absorbing main board 3 can be fully fitted with the inner wall of the outer shell 1, thereby improving the stability of the sound-absorbing main board 3. In summary, the sound-absorbing main board 3 is used to absorb noise.

[0048] like Figure 1-Figure 4 , Figure 6 , Figure 8 , sound-absorbing auxiliary panels 4, seven groups of sound-absorbing auxiliary panels 4 are movably sleeved inside the outer shell 1 between the two sound-absorbing main boards 3, and the seven groups of sound-absorbing auxiliary panels 4 are linearly arranged in the horizontal direction, the number of each group of sound-absorbing auxiliary panels 4 is two, and the two sound-absorbing auxiliary panels 4 are symmetrically arranged, such as Figure 8The sound-absorbing auxiliary panel 4 is made of high-temperature resistant sound-absorbing material, and the material of the sound-absorbing auxiliary panel 4 is the same as that of the sound-absorbing main panel 3. The inner wall of the sound-absorbing auxiliary panel 4 is a smooth wall surface. When the sound wave enters, part of the sound wave energy is affected by the material of the sound-absorbing auxiliary panel 4 and absorbed, thereby weakening the sound wave passing through the sound-absorbing auxiliary panel 4. When the gas carries impurities in, due to the smooth inner wall of the sound-absorbing auxiliary panel 4, only a small amount of impurities will adhere to the smooth inner wall of the sound-absorbing auxiliary panel 4, while most of them will be attached to the uneven inner wall of the sound-absorbing main panel 3. Therefore, the sound-absorbing auxiliary panel 4 not only assists the sound-absorbing main panel 3 to absorb sound waves and eliminate noise, but also promotes impurities to adhere to the sound-absorbing main panel 3 as much as possible. , in preparation for the simple and effective cleaning of impurities in the later stage, the shape of the sound-absorbing auxiliary plate 4 is arc-shaped, and the curvature of the sound-absorbing auxiliary plate 4 is adapted to the outer shell 1, effectively ensuring that the outer wall of the sound-absorbing auxiliary plate 4 can fully fit with the inner wall of the outer shell 1, thereby improving the stability of the setting of the sound-absorbing auxiliary plate 4, the left and right walls of the sound-absorbing auxiliary plate 4 are provided with card slots, and the sound-absorbing auxiliary plate 4 is movably connected with the sound-absorbing main board 3 through the card slots. When assembling the muffler, the sound-absorbing auxiliary plate 4 will be installed in the outer shell 1 first, and then the sound-absorbing main board 3 will be aligned with the card slot of the sound-absorbing auxiliary plate 4 and inserted into the outer shell 1. In particular, when installing the muffler in the exhaust system of a car, it is recommended as follows Figure 3 The silencer is rotated 90 degrees, that is, two sound-absorbing auxiliary panels 4 are placed in the middle position, a sound-absorbing main board 3 is placed in the upper position, and a sound-absorbing main board 3 is placed in the lower position. In this way, the sound-absorbing main board 3 can better adhere to dust and realize the convenient cleaning of the subsequent silencer. In summary, the sound-absorbing auxiliary panels 4 are used to cooperate with the sound-absorbing main board 3 to absorb noise.

[0049] like Figure 1-Figure 4 , Figure 6 , Figure 8-Figure 10 , a partition mechanism 5 is movably arranged inside the outer shell 1 between the two groups of sound-absorbing auxiliary panels 4. There are two groups of partition mechanisms 5, and the two groups of partition mechanisms 5 are linearly arranged in the horizontal direction, such as Fig.10 A set of partitioning mechanisms 5 includes a first partitioning plate 51, a second partitioning plate 52 and a third partitioning plate 53, and the first partitioning plate 51, the second partitioning plate 52 and the third partitioning plate 53 are all fixedly connected to the outer shell 1 by fastening bolts 50, such as Figure 8The front and rear walls of the first partition plate 51, the second partition plate 52 and the third partition plate 53 are all fixedly connected with the sound-absorbing auxiliary plate 4. When assembling the silencer, the staff first fixes the sound-absorbing auxiliary plate 4 and the partition mechanism 5 together, and then installs the sound-absorbing auxiliary plate 4 and the partition mechanism 5 in the outer shell 1 at the same time, which effectively improves the convenience of installing the sound-absorbing auxiliary plate 4 and the partition mechanism 5, and ensures the stability of the setting of the sound-absorbing auxiliary plate 4 and the partition mechanism 5. The left and right walls of the first partition plate 51, the second partition plate 52 and the third partition plate 53 are all provided with card slots, and the first partition plate 51, the second partition plate 52 and the third partition plate 53 are all movably connected with the sound-absorbing main board 3 through the card slots. When assembling the silencer, the sound-absorbing main board 3 needs to be aligned with the card slots of the sound-absorbing auxiliary plate 4 and the partition mechanism 5 at the same time, and then inserted into the outer shell 1. Figure 3 , the internal space of the outer shell 1 is divided into seven chambers by two groups of partition mechanisms 5, and according to the direction of gas movement, they are the first chamber, the second chamber, the third chamber, the fourth chamber, the fifth chamber, the sixth chamber and the seventh chamber in sequence. Specifically, the first chamber is the air intake section. After entering the first chamber, the gas scatters and moves, so that the gas sound wave is continuously reflected in the first chamber, so that its energy is attenuated to achieve the effect of silencing. Then the gas enters the second chamber. Since an exhaust mechanism 6 is provided in the second chamber, the gas moves circuitously along the exhaust mechanism 6, so that the gas sound wave continuously collides with the exhaust mechanism 6, and the sound wave energy is reduced. Then the gas enters the third chamber. At this time, the gas sound wave is continuously reflected in the third chamber by the exhaust mechanism 6, and its energy is further attenuated. Then the gas is discharged into the fourth chamber by the third partition plate 53. The third partition plate 53 is provided with a plurality of transverse holes. At this time, the gas moves along the third partition plate 53. The transverse holes of the three partition plates 53 move straight through, thereby changing the moving direction of the gas, so that the gas vertically hits the wall of the first partition plate 51 in the next group of partition mechanisms 5, and once again realizes the consumption of the sound wave energy in the gas. Then the gas enters the fifth chamber, the sixth chamber and the seventh chamber. At this time, the movement of the gas is the same as the second chamber, the third chamber and the fourth chamber, until the noise in the gas is completely eliminated and discharged from the silencer by the seventh chamber, that is, the exhaust section. In the process of the gas moving in the silencer, since the inner wall of the outer shell 1 is provided with a sound-absorbing main board 3 and a sound-absorbing auxiliary board 4, the gas sound waves will come into frictional contact with the sound-absorbing main board 3 and the sound-absorbing auxiliary board 4 during the continuous reflection process, and then the internal energy is absorbed by the sound-absorbing main board 3 and the sound-absorbing auxiliary board 4, thereby further realizing noise reduction. In summary, the partition mechanism 5 is used to divide the space inside the outer shell 1 into a plurality of chambers to achieve sufficient reflection and absorption of gas noise.

[0050] like Figure 3 , Fig. 9 , Figure 11-13, an exhaust mechanism 6 is fixedly arranged in the partition mechanism 5, specifically, the exhaust mechanism 6 is fixedly sleeved on the first partition plate 51 and the second partition plate 52, and the exhaust mechanism 6 is inclined, which can enable the gas to obtain a rotational force during the movement in the exhaust mechanism 6, thereby enabling the sound waves in the gas to fully move and collide in the exhaust mechanism 6, thereby improving the ability of the exhaust mechanism 6 to absorb noise. Two groups of exhaust mechanisms 6 are arranged in the outer shell 1, and one group of exhaust mechanisms 6 is arranged in one group of partition mechanisms 5. The number of exhaust mechanisms 6 in one group is four, and the four exhaust mechanisms 6 are evenly arranged around the first partition plate 51. When the gas in one group of exhaust mechanisms 6 is discharged, the four groups of gases in the four exhaust mechanisms 6 are mixed and collided with each other under the action of the rotational force, thereby fully enhancing the consumption of sound wave energy in the gas and further realizing noise reduction. The exhaust mechanism 6 includes an exhaust pipe 61, such as Fig. 9 One end of the exhaust pipe 61 is fixedly connected to the first partition plate 51, and the other end of the exhaust pipe 61 passes through the second partition plate 52, so that the gas can pass through the exhaust mechanism 6 into the chamber between the second partition plate 52 and the third partition plate 53, and the gas sound waves are continuously mixed and collided between the second partition plate 52 and the third partition plate 53, and the energy thereof is fully consumed. Figure 12-13 The shape of the exhaust pipe 61 is bent, and the front section of the exhaust pipe 61 is a horizontal section, and the rear section of the exhaust pipe 61 is an inclined section. A threaded groove is provided inside the horizontal section of the exhaust pipe 61. When the gas moves in the horizontal section, the gas will carry a rotational force, so that it will make a spiral motion in the exhaust pipe 61. A number of small holes are provided on the wall of the inclined section of the exhaust pipe 61. When the gas moves in the inclined section, part of the sound waves will be discharged from the small holes, so that part of the sound waves are continuously reflected and consumed between the first partition plate 51 and the second partition plate 52, and the other part of the sound waves are continuously frictionally absorbed in the sound-absorbing main board 3 and the sound-absorbing auxiliary board 4, thereby attenuating its energy, thereby achieving the elimination of noise in the gas. In summary, the exhaust mechanism 6 is used to guide the gas to move in a circuitous manner.

[0051] In summary, the space inside the outer shell 1 is divided into different chambers by utilizing the partition mechanism 5 and the exhaust mechanism 6, so that the gas moves alternately in a circuitous manner and in a straight manner, which not only enhances the noise absorption capacity, but also improves the cleaning efficiency of the impurities in the outer shell 1.

[0052] Embodiment 2, based on embodiment 1, the exhaust mechanism 6 further includes:

[0053] like Fig. 9 , Figure 11-Figure 14 , movable member 7, a movable member 7 is movably arranged in the exhaust pipe 61, and the movable member 7 includes a movable rope 71, a movable ball 72 and a connecting ball 73, such as Fig.14The movable rope 71 is made of high temperature resistant and wear-resistant material, such as aramid high temperature resistant round rope, high temperature resistant aluminum silicate fiber rope, carbon fiber packing, asbestos rope, etc., which can prevent the movable rope 71 from being damaged when the high temperature gas moves in the exhaust mechanism 6, and effectively improve the service life of the movable rope 71. Both ends of the movable rope 71 are movably connected with movable balls 72, that is, both ends of the movable rope 71 pass through the movable balls 72 and are tied to the movable balls 72. One end of the movable rope 71 passes through the wall of the exhaust pipe 61 located at the junction of the horizontal section and the inclined section, and the wall of the exhaust pipe 61 is movably connected to a movable ball 72. When the movable part 7 needs to be replaced, the connection between the movable rope 71 and the movable ball 72 can be untied to realize the removal of the movable rope 71 from the exhaust pipe 61. The other end of the movable rope 71 passes through the inclined section of the exhaust pipe 61, and the other movable ball 72 is located outside the exhaust pipe 61. When working When the movable rope 71 on the exhaust pipe 61 and the movable ball 72 outside the exhaust pipe 61 are in operation, they will continuously rotate under the action of the gas thrust, thereby disturbing the gas. When not working, the movable rope 71 will sag under the action of the gravity of the movable ball 72, and ensure that the movable ball 72 sags to the outside of the exhaust pipe 61. A plurality of connecting balls 73 are provided on the outer wall of the movable rope 71 inside the exhaust pipe 61, and the connecting balls 73 are spirally provided on the movable rope 71. It should be noted that the connecting balls 73 and the movable rope 71 are integrally formed during processing, and the materials of the two are the same, which can effectively ensure the stability of the connecting balls 73 set on the movable rope 71, and can rely on the connecting balls 73 to enhance the sufficiency of the movable rope 71 to rub and hit the inner wall of the exhaust pipe 61. In summary, the movable part 7 is used to enhance the noise elimination effect of the exhaust mechanism 6, and to improve the impurity cleaning effect of the exhaust mechanism 6.

[0054] In summary, when gas passes through the exhaust pipe 61, the gas has a rotational force after passing through the horizontal section of the exhaust pipe 61, which will drive the movable rope 71 to rotate and swing in the exhaust pipe 61, and make the movable ball 72 rotate continuously to disturb the gas between the second partition plate 52 and the third partition plate 53. This not only allows the movable part 7 to fully disturb the sound waves in the gas and make the sound waves collide with each other to achieve the purpose of offsetting the noise, thereby further improving the silencing performance of the exhaust mechanism 6, but also allows the movable rope 71 carrying the connecting ball 73 to reciprocate and rub the inner wall of the exhaust pipe 61, effectively cleaning impurities on the inner wall of the exhaust pipe 61, so that the impurities are carried by the gas and discharged from the exhaust mechanism 6, further reducing the possibility of impurities adhering to the exhaust mechanism 6, thereby reducing the difficulty of cleaning impurities in the partition mechanism 5 and extending the service life of the muffler.

[0055] The working principle of the method of the present invention is as follows:

[0056] When the silencer needs to be assembled, first, one end of the outer shell 1 is clamped and fixed to the fixing component 2 by the fixing bolt 20, and then the staff will movably install the movable part 7 in the exhaust mechanism 6, and then the sound-absorbing auxiliary panel 4 is installed and fixed on the front and rear walls of the two groups of partition mechanisms 5, and then the sound-absorbing auxiliary panel 4 and the partition mechanism 5 are inserted into the outer shell 1, and the first partition plate 51, the second partition plate 52 and the third partition plate 53 are respectively fixed to the outer shell 1 with the fastening bolts 50, and then the sound-absorbing main board 3 is aligned with the slots of the sound-absorbing auxiliary panel 4 and the partition mechanism 5, and the two sound-absorbing main boards 3 are inserted into the outer shell 1, and finally the other end of the outer shell 1 is clamped and fixed to another fixing component 2 by the fixing bolt 20, thereby realizing the assembly of the silencer, and the sound-absorbing main board 3, the sound-absorbing auxiliary panel 4, the partition mechanism 5 and the exhaust mechanism 6 are stably arranged in the outer shell 1.

[0057] When the silencer is working, the gas is discharged from a fixed component 2 into the outer shell 1, then moves in the outer shell 1 and eliminates the noise, and finally is discharged from the outer shell 1 from another fixed component 2. When the gas moves in the outer shell 1, the gas enters the first chamber, the second chamber, the third chamber, the fourth chamber, the fifth chamber, the sixth chamber and the seventh chamber in sequence. Since the exhaust mechanism 6 is provided in the second chamber and the fifth chamber, the gas moves in a circuitous manner under the action of the exhaust mechanism 6, that is, after passing through the horizontal section of the exhaust pipe 61, the gas makes a spiral motion in the inclined section of the exhaust pipe 61, so that part of the sound waves will be discharged from the small holes of the exhaust pipe 61, so that part of the sound waves will be discharged from the first partition plate 5. 1 and the second partition plate 52 are constantly reflected and consumed, and the other part of the sound waves enters the sound-absorbing main board 3 and the sound-absorbing auxiliary board 4 and is constantly frictionally absorbed, further attenuating its energy, thereby achieving the elimination of noise in the gas. At the same time, the spirally moving gas will push the movable part 7 to rotate and swing, which not only effectively and fully disturbs the sound waves in the gas, causing the sound waves to collide with each other, achieving the purpose of canceling the noise, further improving the silencing performance of the muffler, but also effectively cleaning the inner wall of the exhaust pipe 61, further reducing the possibility of impurities adhering to the exhaust mechanism 6, thereby reducing the difficulty of cleaning impurities in the partition mechanism 5 and extending the service life of the muffler. After that, the four groups of gas after passing through the exhaust mechanism 6 will be in the third chamber The sound waves of the gas collide with each other under the circuitous driving effect of the exhaust mechanism 6, and are continuously reflected in the third and sixth chambers, further attenuating their energy. At the same time, the continuously reflected gas is also discharged to the sound-absorbing main board 3 and the sound-absorbing auxiliary board 4, so that the sound wave energy is rubbed in the pores of the sound-absorbing main board 3 and the sound-absorbing auxiliary board 4 and converted into heat energy dissipation, thereby weakening the sound waves. In this process, due to the uneven inner wall of the sound-absorbing main board 3, the impurities in the gas are well collected by the sound-absorbing main board 3. Then the gathered gas moves to the fourth and seventh chambers. At this time, the gas moves straight through along the transverse holes of the third partition plate 53, thereby changing the movement of the gas. direction, so that the gas vertically hits the wall of the first partition plate 51 or the wall of the fixed plate 21, and the sound wave energy in the gas is consumed again. In summary, the gas will move in a circuitous and straight-through manner when moving in the outer shell 1, thereby prompting the gas to be reflected and consumed between the first partition plate 51, the second partition plate 52 and the third partition plate 53 during the movement, and to be absorbed by the friction of the sound-absorbing main board 3 and the sound-absorbing auxiliary board 4, so that its energy is attenuated, effectively improving the outer shell 1's ability to absorb noise in the gas and achieving full elimination of noise, and prompting the gas to fully attach impurities to the sound-absorbing main board 3 when moving, thereby providing convenience for the subsequent cleaning of impurities in the outer shell 1.

[0058] When the silencer needs to be cleaned, first remove a fixing component 2, then take out the two sound-absorbing main boards 3 inside the outer shell 1, then either clean the impurities on the sound-absorbing main boards 3, or replace them with new ones, then reinsert the sound-absorbing main boards 3 into the outer shell 1, and finally reinstall the fixing component 2 on the outer shell 1. In this way, the sound-absorbing main boards 3 can be replaced and the impurities can be cleaned with simple operations, thereby extending the service life of the silencer.

[0059] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A car muffler, characterized in that: include: A working mechanism, used for providing a processing space for eliminating noise, the working mechanism comprising an outer shell (1) and a fixing component (2), the fixing components (2) being fixedly arranged at both ends of the outer shell (1); A sound-absorbing main board (3), wherein two sound-absorbing main boards (3) are movably sleeved inside the outer shell (1), and the two sound-absorbing main boards (3) are symmetrically arranged for absorbing noise, and the inner walls of the sound-absorbing main boards (3) are rough wall surfaces; A sound-absorbing auxiliary panel (4), the outer shell (1) being located between the two sound-absorbing main panels (3), has seven groups of sound-absorbing auxiliary panels (4) movably sleeved therein, and the seven groups of sound-absorbing auxiliary panels (4) are linearly arranged in a horizontal direction, the number of each group of sound-absorbing auxiliary panels (4) is two, and the two sound-absorbing auxiliary panels (4) are symmetrically arranged to cooperate with the sound-absorbing main panels (3) to absorb noise, and the inner wall of the sound-absorbing auxiliary panel (4) is a smooth wall surface; A partition mechanism (5) is movably provided inside the outer shell (1) between the two groups of the sound-absorbing auxiliary panels (4), the partition mechanism (5) comprising a first partition plate (51), a second partition plate (52) and a third partition plate (53), and is used to divide the space inside the outer shell (1) into a plurality of chambers, thereby achieving sufficient reflection and absorption of gas noise; An exhaust mechanism (6), wherein the exhaust mechanism (6) is fixedly arranged inside the partition mechanism (5), the exhaust mechanism (6) comprising an exhaust pipe (61), one end of the exhaust pipe (61) being fixedly sleeved with the first partition plate (51), and the other end of the exhaust pipe (61) passing through the second partition plate (52), the exhaust pipe (61) being in a bent shape, and the front section of the exhaust pipe (61) being a horizontal section, and the rear section of the exhaust pipe (61) being an inclined section, a threaded groove is provided inside the horizontal section of the exhaust pipe (61), and a plurality of small holes are provided on the wall surface of the inclined section of the exhaust pipe (61) for guiding the gas to move in a circuitous manner, and the partition mechanism (5) and the exhaust mechanism (6) are used to divide the space inside the outer shell (1) into different chambers, so that the gas moves in a circuitous manner and moves in a straight manner alternately when moving.

2. The automobile muffler according to claim 1, characterized in that: The fixing component (2) comprises: A fixing plate (21), wherein fixing grooves are provided at both ends of the outer shell (1), and the outer shell (1) is movably connected to the fixing plate (21) via the fixing grooves, a fixing bolt (20) is provided on a wall surface of the outer shell (1) in a threaded manner, and the outer shell (1) is fixedly connected to the fixing plate (21) via the fixing bolt (20); A fixed pipe (22), wherein the middle portion of the fixed plate (21) is fixedly connected to the fixed pipe (22).

3. The automobile muffler according to claim 2, characterized in that: The sound absorbing main board (3) is made of a high temperature resistant sound absorbing material. The shape of the sound absorbing main board (3) is arc-shaped, and the arc of the sound absorbing main board (3) is adapted to the outer shell (1).

4. The automobile muffler according to claim 3, characterized in that: The sound-absorbing auxiliary plate (4) is made of a high-temperature resistant sound-absorbing material, and the material of the sound-absorbing auxiliary plate (4) is the same as that of the sound-absorbing main plate (3). The shape of the sound-absorbing auxiliary plate (4) is arc-shaped, and the arc of the sound-absorbing auxiliary plate (4) is adapted to the outer shell (1). The left and right wall surfaces of the sound-absorbing auxiliary plate (4) are both provided with card slots, and the sound-absorbing auxiliary plate (4) is movably connected to the sound-absorbing main plate (3) through the card slots.

5. The automobile muffler according to claim 4, characterized in that: The number of the partitioning mechanisms (5) is two groups, and the two groups of partitioning mechanisms (5) are linearly arranged in the horizontal direction; the first partition plate (51), the second partition plate (52) and the third partition plate (53) are fixedly connected to the outer shell (1) by means of fastening bolts (50); the front and rear wall surfaces of the first partition plate (51), the second partition plate (52) and the third partition plate (53) are fixedly connected to the sound-absorbing auxiliary plate (4); the left and right wall surfaces of the first partition plate (51), the second partition plate (52) and the third partition plate (53) are provided with a card slot, and the first partition plate (51), the second partition plate (52) and the third partition plate (53) are movably connected to the sound-absorbing main plate (3) by means of the card slot.

6. The automobile muffler according to claim 5, characterized in that: The internal space of the outer shell (1) is divided into seven chambers by two sets of partition mechanisms (5), and are respectively divided into a first chamber, a second chamber, a third chamber, a fourth chamber, a fifth chamber, a sixth chamber and a seventh chamber according to the direction of gas movement, and a plurality of transverse holes are provided on the third partition plate (53).

7. The automobile muffler according to claim 6, characterized in that: The exhaust mechanism (6) is fixedly sleeved on the first partition plate (51) and the second partition plate (52), and the exhaust mechanism (6) is arranged in an inclined manner. Two groups of exhaust mechanisms (6) are arranged in the outer shell (1), and one group of exhaust mechanisms (6) is arranged in one group of partition mechanisms (5). The number of exhaust mechanisms (6) in one group is four, and the four exhaust mechanisms (6) are evenly arranged around the first partition plate (51).

8. The automobile muffler according to claim 7, characterized in that: The exhaust mechanism (6) further comprises: A movable part (7) is movably arranged in the exhaust pipe (61), which is used to enhance the effect of the exhaust mechanism (6) in eliminating noise and to enhance the effect of the exhaust mechanism (6) in cleaning impurities.

9. The automobile muffler according to claim 8, characterized in that: The movable part (7) comprises: A movable rope (71), wherein the movable rope (71) is made of a high temperature resistant and wear resistant material; A movable ball (72), wherein both ends of the movable rope (71) are movably connected to the movable ball (72), one end of the movable rope (71) passes through the wall of the exhaust pipe (61) at the intersection of the horizontal section and the inclined section, and the wall of the exhaust pipe (61) is movably engaged with one movable ball (72), the other end of the movable rope (71) passes through the inclined section of the exhaust pipe (61), and the other movable ball (72) is located outside the exhaust pipe (61); Connecting balls (73), a plurality of connecting balls (73) are arranged on the outer wall of the movable rope (71) located in the exhaust pipe (61), and the connecting balls (73) are spirally arranged on the movable rope (71).

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