Exhaust silencer
By tilting the upper air outlet on the exhaust muffler tail tube design and using a high-temperature and corrosion-resistant coating, the problem of water accumulation and rust in the exhaust muffler tail tube is solved, achieving better waterproof performance and noise reduction effect.
Patent Information
- Application Number
- CN202422135766.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-02
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-09-02
AI Technical Summary
The tail pipe of the existing exhaust muffler is prone to accumulation of water and rust when it rains, affecting its service life.
The axis angle between the lower air inlet and the upper air outlet of the exhaust tailpipe is 80 degrees to 85 degrees, and combined with the use of silicon carbide ceramic coating, tungsten carbide metal coating and alumina ceramic coating, it enhances waterproof and corrosion resistance.
Effectively prevent rainwater from entering the muffler, reduce the risk of rust, improve waterproofing effect, and extend service life, while reducing noise levels.
Smart Images
Figure CN223062520U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of automobile parts, and relates to an exhaust muffler, the tail pipe of which has the function of preventing rainwater from entering. Background Technique
[0002] The function of an exhaust muffler is to reduce exhaust noise by gradually reducing the exhaust pressure and attenuating the pulsation of the exhaust pressure. The muffler is made of aluminized steel plate or stainless steel plate. Usually, the muffler consists of a resonance chamber, an expansion chamber and a group of porous pipes. Some also fill heat-resistant sound-absorbing materials in the muffler. The sound-absorbing materials are mostly glass fiber. The exhaust gas flows into the expansion chamber and the resonance chamber through the porous pipes. During this process, the exhaust gas continuously changes its flow direction, gradually reducing and attenuating its pressure and pressure pulsation, consuming its energy, and finally reducing the exhaust noise. At present, in engineering vehicles, the tail pipe of the exhaust muffler usually adopts an upward inclined exhaust method, which causes rainwater to be easily affected by the wind direction during rain, and flow into the interior of the tail pipe, and form a certain amount of accumulated water inside the muffler. Over time, it will cause the interior of the muffler to rust through, affecting the service life of the muffler.
[0003] Therefore, it is necessary to further optimize the structure of the exhaust silencer pipe to prevent rainwater from entering the interior of the silencer pipe. Content of the Utility Model
[0004] In order to solve the problem that rainwater easily enters the interior of the tail of the traditional exhaust silencer pipe, the utility model provides an exhaust silencer pipe whose tail can prevent rainwater from entering.
[0005] The utility model is realized through the following technical solutions:
[0006] The above-mentioned exhaust muffler includes an exhaust tail pipe. The lower end of the exhaust tail pipe (1) is an air inlet, and the upper end of the exhaust tail pipe (1) is an air outlet, and the axis angle between the air outlet and the air inlet is 80 degrees to 85 degrees.
[0007] In the exhaust muffler, a flared arc (13) is sleeved on the lower end of the exhaust tail pipe (1), and the outer surface of the flared arc (13) is movably connected to the upper end of the inner cavity of the aggregated outlet pipe (11).
[0008] The exhaust muffler described above, wherein: the muffler includes a muffler housing (5), a first perforated pipe (7) is welded to the lower end of the right side of the muffler housing (5), an air inlet pipe (6) is welded between the left side of the first perforated pipe (7) and the lower end of the left side of the muffler housing (5), a first sound-absorbing partition (8) is welded to the lower end of the inner cavity of the muffler housing (5) and above the first perforated pipe (7), a second sound-absorbing partition (10) is welded to the upper end of the inner cavity of the muffler housing (5), a second perforated pipe (9) is welded between the surface of the second sound-absorbing partition (10) and the surface of the first sound-absorbing partition (8), a collecting outlet pipe (11) is welded between the middle end of the second sound-absorbing partition (10) and the middle end of the top of the muffler housing (5), and the exhaust tail pipe (1) is welded to the upper end of the inner cavity of the collecting outlet pipe (11).
[0009] The exhaust muffler described above, wherein: the number of the second perforated pipes (9) is two, and the two second perforated pipes (9) are symmetrically arranged.
[0010] The exhaust muffler described above, wherein: a first mounting plate (2) is welded to the front surface of the air inlet pipe (6), and first mounting holes (4) are formed in the circumferences of the first mounting plate (2).
[0011] The exhaust muffler described above, wherein: a second mounting plate (3) is welded to the bottom of the muffler housing (5), and second mounting holes (12) are formed in the circumferences of the second mounting plate (3).
[0012] The exhaust muffler described above, wherein: the exhaust tail pipe (1) includes a stainless steel plate layer (102), and a silicon carbide ceramic coating (101) is coated on the outer surface of the stainless steel plate layer (102).
[0013] The exhaust muffler described above, wherein: a tungsten carbide metal coating (103) is coated on the inner surface of the stainless steel plate layer (102), and an alumina ceramic coating (104) is coated on the inner surface of the tungsten carbide metal coating (103). Beneficial effects
[0014] The exhaust muffler of the present utility model has the advantages of improving the waterproof effect during use and avoiding serious corrosion inside caused by rainwater entering. Since the axial angle between the lower air inlet and the upper air outlet of the exhaust tail pipe is 80 degrees to 85 degrees, the upper air outlet can be inclined downward, effectively avoiding rainwater from the outside entering the interior of the muffler housing through the exhaust tail pipe, reducing the probability of corrosion damage inside the muffler housing, and effectively improving the overall waterproof effect.
[0015] Through the provision of an intake pipe, the utility model can be docked with the exhaust pipe of an engineering vehicle, enabling the vehicle's exhaust gas to effectively absorb and disperse noise between the first perforated pipe, the first sound insulation partition, the second sound insulation partition, and the second perforated pipe inside the muffler housing, thereby reducing the noise level during exhaust gas emission. Meanwhile, the muffled exhaust gas can be discharged to the outside through the aggregated outlet pipe and the exhaust tail pipe.
[0016] Through the provision of a flared arc, the sealing performance of the contact between the exhaust tail pipe and the aggregated outlet pipe is effectively improved, avoiding air leakage caused by weld cracking between the exhaust tail pipe and the aggregated outlet pipe. Through the provision of the first mounting plate and the first mounting holes, it is convenient for personnel to dock and install the intake pipe with the exhaust pipe of the engineering vehicle using bolts. Through the provision of the second mounting plate and the second mounting holes, it is convenient for personnel to install and fix the muffler housing using bolts. Through the provision of a silicon carbide ceramic coating, a good high-temperature and corrosion-resistant protection is formed on the outer surface of the exhaust tail pipe, avoiding damage to the surface of the exhaust tail pipe caused by high temperature and water body corrosion. Through the provision of a tungsten carbide metal coating and an alumina ceramic coating, a double-layer high-temperature and corrosion-resistant protection is formed on the inner surface of the exhaust tail pipe, avoiding damage to the inner surface of the exhaust tail pipe caused by high temperature and water body corrosion, greatly improving the service life of the exhaust tail pipe. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 is a schematic structural diagram of the utility model;
[0018] Figure 2 is a schematic right-side sectional structural diagram of the utility model;
[0019] Figure 3 is a schematic top-view structural diagram of the utility model;
[0020] Figure 4 is the utility model Figure 2 partial enlarged view at A in;
[0021] Figure 5 is a schematic structural diagram of the exhaust tail pipe of the utility model.
[0022] In the figure: 1. Exhaust tail pipe; 101. Silicon carbide ceramic coating; 102. Stainless steel plate layer; 103. Tungsten carbide metal coating; 104. Alumina ceramic coating; 2. First mounting plate; 3. Second mounting plate; 4. First mounting holes; 5. Muffler housing; 6. Intake pipe; 7. First perforated pipe; 8. First sound insulation partition; 9. Second perforated pipe; 10. Second sound insulation partition; 11. Aggregated outlet pipe; 12. Second mounting holes; 13. Flared arc. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0024] Secondly, the so-called "one embodiment" or "embodiment" herein refers to specific features, structures or characteristics that can be included in at least one implementation manner of the present utility model. The "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it an independent or selectively mutually exclusive embodiment with other embodiments. Embodiment 1
[0025] Please refer to Figures 1-5 As shown, the present utility model provides an exhaust muffler, which includes a muffler housing 5. A first perforated pipe 7 is welded to the lower end on the right side of the muffler housing 5. An intake pipe 6 is welded between the left side of the first perforated pipe 7 and the lower end on the left side of the muffler housing 5. A first sound-absorbing partition 8 is welded to the lower end inside the muffler housing 5 and above the first perforated pipe 7. A second sound-absorbing partition 10 is welded to the upper end inside the muffler housing 5. A second perforated pipe 9 is welded between the surface of the second sound-absorbing partition 10 and the surface of the first sound-absorbing partition 8. A collecting exhaust pipe 11 is welded between the middle end of the second sound-absorbing partition 10 and the middle end of the top of the muffler housing 5. An exhaust tail pipe 1 is welded to the upper end inside the collecting exhaust pipe 11. The lower end of the exhaust tail pipe 1 is the intake port, and the upper end of the exhaust tail pipe 1 is the outlet port, and the axis angle between the outlet port and the intake port is 85 degrees to 80 degrees.
[0026] In this technical solution, through the setting of the intake pipe 6, it can be docked with the exhaust pipe of the engineering vehicle, so that the vehicle exhaust gas can effectively absorb and disperse the noise between the first perforated pipe 7, the first sound-absorbing partition 8, the second sound-absorbing partition 10 and the second perforated pipe 9 inside the muffler housing 5, thereby reducing the noise level during the exhaust gas emission. At the same time, the muffled exhaust gas can be discharged to the outside through the collecting exhaust pipe 11 and the exhaust tail pipe 1. And because the axis angle between the lower intake port and the upper outlet port of the exhaust tail pipe 1 is 80 degrees to 85 degrees, the upper outlet port can be inclined downward, effectively avoiding the outside rainwater from entering the inside of the muffler housing 5 through the exhaust tail pipe 1, reducing the probability of rust and damage inside the muffler housing 5, and effectively improving the overall waterproof effect. Embodiment 2
[0027] On the basis of Embodiment 1, the present utility model is as Figures 1-5As shown, a flared arc 13 is sleeved on the lower end of the exhaust tail pipe 1. The outer surface of the flared arc 13 is movably connected to the upper end of the inner cavity of the aggregated outlet pipe 11. The number of the second perforated pipes 9 is two, and the two second perforated pipes 9 are symmetrically arranged. A first mounting plate 2 is welded to the front surface of the intake pipe 6. First mounting holes 4 are provided around the first mounting plate 2. A second mounting plate 3 is welded to the bottom of the muffler housing 5. Second mounting holes 12 are provided around the second mounting plate 3. The exhaust tail pipe 1 includes a stainless steel plate layer 102. A silicon carbide ceramic coating 101 is coated on the outer surface of the stainless steel plate layer 102. A tungsten carbide metal coating 103 is coated on the inner surface of the stainless steel plate layer 102. An alumina ceramic coating 104 is coated on the inner surface of the tungsten carbide metal coating 103.
[0028] In this technical solution, through the setting of the flared arc 13, the sealing performance of the contact between the exhaust tail pipe 1 and the aggregated outlet pipe 11 is effectively improved, avoiding air leakage caused by weld cracking between the exhaust tail pipe 1 and the aggregated outlet pipe 11. Through the setting of the first mounting plate 2 and the first mounting holes 4, it is convenient for personnel to dock and install the intake pipe 6 with the exhaust pipe line of the engineering vehicle using bolts. Through the setting of the second mounting plate 3 and the second mounting holes 12, it is convenient for personnel to install and fix the muffler housing 5 using bolts. Through the setting of the silicon carbide ceramic coating 101, a good high-temperature resistance and anti-corrosion protection are formed on the outer surface of the exhaust tail pipe 1, avoiding damage to the surface of the exhaust tail pipe 1 due to high temperature and water body corrosion. Through the setting of the tungsten carbide metal coating 103 and the alumina ceramic coating 104, a double-layer high-temperature resistance and anti-corrosion protection are formed on the inner surface of the exhaust tail pipe 1, avoiding damage to the inner surface of the exhaust tail pipe 1 due to high temperature and water body corrosion, greatly improving the service life of the exhaust tail pipe 1.
[0029] The working principle of the present utility model is: through the setting of the intake pipe 6, it can be docked with the exhaust pipe line of the engineering vehicle, so that the vehicle exhaust gas can effectively absorb and disperse noise among the first perforated pipe 7, the first sound-absorbing partition 8, the second sound-absorbing partition 10 and the second perforated pipe 9 inside the muffler housing 5, thereby reducing the noise level during the exhaust gas emission. At the same time, the muffled exhaust gas can be discharged to the outside through the aggregated outlet pipe 11 and the exhaust tail pipe 1. And since the axis angle between the lower intake port and the upper outlet port of the exhaust tail pipe 1 is 80 degrees to 85 degrees, the upper outlet port can be inclined downward, effectively avoiding rainwater from the outside entering the inside of the muffler housing 5 through the exhaust tail pipe 1, reducing the probability of rust and damage inside the muffler housing 5, and effectively improving the overall waterproof effect.
[0030] Importantly, it should be noted that the construction and arrangement of the present application shown in multiple different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who refer to this disclosure should easily understand that many modifications are possible without substantially departing from the novel teachings and advantages of the subject matter described in this application (for example, the dimensions, scales, structures, shapes and proportions of various elements, and parameter values (such as temperature, pressure, etc.), installation arrangements, use of materials, changes in color, orientation, etc.). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature, number or position of discrete elements may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means-plus-function" clause is intended to cover the structures that perform the recited function described herein, and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present utility model. Therefore, the present utility model is not limited to specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.
[0031] In addition, in order to provide a concise description of the exemplary embodiments, not all features of the actual embodiments may be described (i.e., those features that are not relevant to the currently contemplated best mode of carrying out the present utility model or those features that are not relevant to the implementation of the present utility model).
[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit the protection scope of the present utility model. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present utility model can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present utility model.
Claims
1. An exhaust muffler, including an exhaust tail pipe, characterized in that: The lower end of the exhaust tail pipe (1) is an air inlet, and the upper end of the exhaust tail pipe (1) is an air outlet, and the axial angle between the air outlet and the air inlet is 80 degrees to 85 degrees; A flaring arc (13) is sleeved on the lower end of the exhaust tail pipe (1), and the outer surface of the flaring arc (13) is movably connected to the upper end of the inner cavity of the collecting outlet pipe (11); The muffler includes a muffler housing (5). A first perforated pipe (7) is welded to the lower end of the right side of the muffler housing (5). An intake pipe (6) is welded between the left side of the first perforated pipe (7) and the lower end of the left side of the muffler housing (5). A first sound-absorbing partition (8) is welded to the lower end of the inner cavity of the muffler housing (5) and above the first perforated pipe (7). A second sound-absorbing partition (10) is welded to the upper end of the inner cavity of the muffler housing (5). A second perforated pipe (9) is welded between the surface of the second sound-absorbing partition (10) and the surface of the first sound-absorbing partition (8). A collecting outlet pipe (11) is welded between the middle end of the second sound-absorbing partition (10) and the middle end of the top of the muffler housing (5). The exhaust tail pipe (1) is welded to the upper end of the inner cavity of the collecting outlet pipe (11).
2. The exhaust muffler according to claim 1, wherein: The number of the second perforated pipes (9) is two, and the two second perforated pipes (9) are symmetrically arranged.
3. The exhaust muffler according to claim 1, characterized in that: A first mounting plate (2) is welded to the front surface of the intake pipe (6), and first mounting holes (4) are formed in the circumferences of the first mounting plate (2).
4. The exhaust muffler according to claim 1, characterized in that: A second mounting plate (3) is welded to the bottom of the muffler housing (5), and second mounting holes (12) are formed in the circumferences of the second mounting plate (3).
5. The exhaust muffler according to claim 1, characterized in that: The exhaust tail pipe (1) includes a stainless steel plate layer (102), and a silicon carbide ceramic coating (101) is coated on the outer surface of the stainless steel plate layer (102).
6. The exhaust muffler according to claim 5, wherein: A tungsten carbide metal coating (103) is coated on the inner surface of the stainless steel plate layer (102), and an alumina ceramic coating (104) is coated on the inner surface of the tungsten carbide metal coating (103).