Engineering machinery silencer

Abstract

The utility model discloses an engineering machinery silencer, and relates to the technical field of silencers, and the technical scheme is that the engineering machinery silencer comprises a heat insulation module which is used for insulating heat generated in the working process of a device and comprises an inner barrel, the side wall of the inner barrel is fixedly connected with second heat insulation cotton, the side wall of the second heat insulation cotton is fixedly connected with an outer barrel, and the outer barrel is fixedly connected with a heat insulation cover. The pretreatment module is used for eliminating part of low and medium frequency noise and comprises an air inlet pipe penetrating through the side walls of the outer cylinder body and the inner cylinder body, the other side of the inner side wall of the air inlet pipe is fixedly connected with a blanking cap, and the pretreatment module is used for eliminating part of the low and medium frequency noise and comprises an air inlet pipe penetrating through the side walls of the outer cylinder body and the inner cylinder body; the engineering machinery silencer has the advantages that the service life of equipment is effectively prolonged by arranging the heat insulation module, low and medium frequency noise generated by airflow can be preliminarily eliminated by arranging the pretreatment module, pretreatment of the airflow is effectively achieved, and the noise elimination efficiency is effectively improved by arranging the treatment module.

Description

Technical Field

[0001] This utility model relates to the field of silencer technology, and more specifically, to a silencer for engineering machinery. Background Technology

[0002] The muffler is a crucial component of a vehicle's exhaust system. Construction machinery vehicles primarily use diesel engines, and the design and application of mufflers for these vehicles presents a complex engineering challenge, requiring trade-offs and optimizations across acoustics, aerodynamics, structure, and economics. With continuous technological advancements, the performance and application scope of mufflers will further expand, providing more effective solutions for noise control in construction machinery.

[0003] While existing technologies can eliminate noise generated by airflow during vehicle exhaust system operation through mufflers, the large flow rate, high pressure, and high temperature of the exhaust gas result in poor noise reduction, shorter device lifespan, and reduced user experience.

[0004] Therefore, those skilled in the art have provided a muffler for engineering machinery to solve the problems mentioned in the background art. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an engineering machinery silencer that can effectively extend the service life of the equipment by setting a heat insulation module, can initially eliminate the low- and medium-frequency noise generated by airflow by setting a pre-treatment module, effectively achieve airflow pre-treatment, and effectively improve the efficiency of noise elimination by setting a processing module.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a silencer for engineering machinery, comprising:

[0007] A heat insulation module is used to isolate the heat generated during the operation of the device. It includes an inner cylinder, a second heat insulation cotton is fixedly connected to the side wall of the inner cylinder, and an outer cylinder is fixedly connected to the side wall of the second heat insulation cotton.

[0008] The pre-processing module is used to eliminate some low- and mid-frequency noise, including an air inlet pipe that penetrates the outer cylinder and the inner cylinder sidewall, and a plug is fixedly connected to the other side of the inner sidewall of the air inlet pipe.

[0009] The processing module, used to eliminate high-frequency noise, includes two partitions fixedly connected to the inner wall of the inner cylinder, two inner tubes fixedly connected to the inner walls of the two partitions, and a second cavity provided between the two partitions.

[0010] Preferably, the inner cylinder has two air inlet caps fixedly connected to the rear end of its inner side wall, and a first heat insulation cotton is provided between the two air inlet caps. The inner cylinder has an air outlet cap fixedly connected to the front side of its inner side wall, a third heat insulation cotton is fixedly connected to the front end of the air outlet cap, an air outlet cap is fixedly connected to the front end of the third heat insulation cotton, and an air outlet pipe is fixedly connected to the middle of the inner side wall of the air outlet cap.

[0011] Preferably, a first cavity is provided on the rear side of the inner wall of the inner cylinder, and a plurality of through holes are provided on the side wall of the air inlet pipe, and the through holes are connected to the first cavity.

[0012] Preferably, a third cavity is provided on the front side of the inner wall of the inner cylinder, and one end of the inner tube located on the upper side of the inner wall of the inner cylinder passes through the partition sidewall on the front side of the inner wall of the inner cylinder and communicates with the third cavity.

[0013] Preferably, the other end of the inner tube located on the lower inner wall of the inner cylinder passes through the rear sidewall of the inner cylinder's inner wall and communicates with the first cavity.

[0014] Preferably, one end of the air outlet pipe passes through the outer air outlet cap and the inner air outlet cap and communicates with the third cavity.

[0015] Preferably, the sidewalls of the two inner tubes are provided with holes.

[0016] Preferably, the inner wall of the air inlet pipe and the plug are welded together, and the plug and the inner wall of the air inlet pipe are compatible with each other.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. In this utility model, by setting a heat insulation module, a first heat insulation cotton is provided in the two air inlet end caps on one side of the inner wall of the inner cylinder, a third heat insulation cotton is provided between the outer air outlet end cap and the inner air outlet end cap, and a second heat insulation cotton is provided on the side wall of the inner cylinder. This can effectively isolate the heat generated in noise elimination and reduce the impact of heat in the exhaust system on the device, thus effectively extending the service life of the equipment.

[0019] 2. In this utility model, by setting a pre-treatment module, the airflow in the exhaust system enters the first cavity through the air inlet pipe, and multiple holes are provided on the side wall of the air inlet pipe, which allows the gas to expand inside the first cavity, thereby initially eliminating the low-frequency noise generated by the airflow and effectively pre-treating the airflow.

[0020] 3. In this utility model, by setting a processing module, the airflow enters the second cavity through the inner tube. A cavity is set on the side wall of the inner tube to further expand and eliminate some high-frequency noise. Part of the airflow enters the first heat insulation cotton for further expansion, further eliminating the noise. Finally, it is discharged through the air outlet pipe, effectively improving the efficiency of noise elimination. Attached Figure Description

[0021] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the structure from another perspective in this utility model;

[0024] Figure 3 This is a cross-sectional view of the structure of this utility model;

[0025] Figure 4 This is a side view of the structure of this utility model.

[0026] 1. Outer cylinder; 2. Air outlet pipe; 3. Air inlet pipe; 4. Air inlet end cap; 5. Plug; 6. Outer end cap; 7. First insulation cotton; 8. Third cavity; 9. First cavity; 10. Inner pipe; 11. Second cavity; 12. Partition plate; 13. Second insulation cotton; 14. Inner cylinder; 15. Third insulation cotton; 16. Inner end cap for air outlet. Detailed Implementation

[0027] like Figures 1-4 As shown, this utility model provides a muffler for engineering machinery, comprising:

[0028] The heat insulation module is used to isolate the heat generated during the operation of the device. It includes an inner cylinder 14, a second heat insulation cotton 13 is fixedly connected to the side wall of the inner cylinder 14, and an outer cylinder 1 is fixedly connected to the side wall of the second heat insulation cotton 13.

[0029] The pre-processing module is used to eliminate some low- and mid-frequency noise. It includes an air inlet pipe 3 that penetrates the side walls of the outer cylinder 1 and the inner cylinder 14. A plug 5 is fixedly connected to the other side of the inner wall of the air inlet pipe 3.

[0030] The processing module, used to eliminate high-frequency noise, includes two partitions 12 fixedly connected to the inner wall of the inner cylinder 14, two inner tubes 10 fixedly connected to the inner wall of the two partitions 12, and a second cavity 11 is provided between the two partitions 12.

[0031] Two air inlet caps 4 are fixedly connected to the rear end of the inner wall of the inner cylinder 14. A first heat insulation cotton 7 is provided between the two air inlet caps 4. An air outlet inner cap 16 is fixedly connected to the front side of the inner wall of the inner cylinder 14. A third heat insulation cotton 15 is fixedly connected to the front end of the air outlet inner cap 16. An air outlet outer cap 6 is fixedly connected to the front end of the third heat insulation cotton 15. An air outlet pipe 2 is fixedly connected to the middle of the inner wall of the air outlet inner cap 16.

[0032] It should be noted that by setting up a heat insulation module, the two air inlet end caps 4 on one side of the inner cylinder 14 are provided with first heat insulation cotton 7, the outer air outlet end cap 6 and the inner air outlet end cap 16 are provided with third heat insulation cotton 15, and the side wall of the inner cylinder 14 is provided with second heat insulation cotton 13. This can effectively isolate the heat generated in noise elimination and reduce the impact of heat in the exhaust system on the device, thus effectively extending the service life of the equipment.

[0033] The inner cylinder 14 has a first cavity 9 on the rear side of its inner wall, and the air inlet pipe 3 has several through holes on its side wall, which are connected to the first cavity 9.

[0034] A third cavity 8 is provided on the front side of the inner wall of the inner cylinder 14. One end of the inner tube 10 located on the upper side of the inner wall of the inner cylinder 14 passes through the side wall of the partition plate 12 on the front side of the inner wall of the inner cylinder 14 and communicates with the third cavity 8. The other end of the inner tube 10 located on the lower side of the inner wall of the inner cylinder 14 passes through the side wall of the partition plate 12 on the rear side of the inner wall of the inner cylinder 14 and communicates with the first cavity 9. One end of the air outlet pipe 2 passes through the outer end cap 6 and the inner end cap 16 and communicates with the third cavity 8.

[0035] The side walls of the two inner tubes 10 are provided with holes. The inner side wall of the air inlet pipe 3 is welded to the plug 5, and the plug 5 and the inner side wall of the air inlet pipe 3 are compatible with each other.

[0036] Two air inlet caps 4 are provided on one side of the inner cylinder 14, and a first heat insulation cotton 7 is provided in them. A third heat insulation cotton 15 is provided between the outer air outlet cap 6 and the inner air outlet cap 16. A second heat insulation cotton 13 is provided on the side wall of the inner cylinder 14. This can effectively isolate the heat generated during noise elimination and reduce the impact of heat in the exhaust system on the device, thus effectively extending the service life of the equipment. The airflow in the exhaust system enters the first cavity 9 through the air inlet pipe 3. Multiple holes are provided on the side wall of the air inlet pipe 3, which allows the gas to expand inside the first cavity 9. This can initially eliminate the low- and medium-frequency noise generated by the airflow and effectively pre-treat the airflow. The airflow enters the second cavity 11 through the inner pipe 10. Holes are provided on the side wall of the inner pipe 10, which further expands the airflow and eliminates some high-frequency noise. Part of the airflow enters the first heat insulation cotton 7 for further expansion, further eliminating the noise. Finally, the airflow is discharged through the air outlet pipe 2, effectively improving the efficiency of noise elimination.

[0037] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or equivalent variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are considered equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. An engineered machine muffler, characterized by: include: A heat insulation module is used to isolate the heat generated during the operation of the device. It includes an inner cylinder (14), a second heat insulation cotton (13) is fixedly connected to the side wall of the inner cylinder (14), and an outer cylinder (1) is fixedly connected to the side wall of the second heat insulation cotton (13). The pre-processing module is used to eliminate some low- and medium-frequency noise, including an air inlet pipe (3) that penetrates the side wall of the outer cylinder (1) and the inner cylinder (14), and a plug (5) is fixedly connected to the other side of the inner wall of the air inlet pipe (3). The processing module for eliminating high-frequency noise includes two partitions (12) fixedly connected to the inner wall of the inner cylinder (14), two inner tubes (10) fixedly connected to the inner wall of the two partitions (12), and a second cavity (11) provided between the two partitions (12).

2. The engineering machinery muffler according to claim 1, characterized in that: Two air inlet caps (4) are fixedly connected to the rear end of the inner wall of the inner cylinder (14). A first heat insulation cotton (7) is provided between the two air inlet caps (4). An air outlet inner cap (16) is fixedly connected to the front side of the inner wall of the inner cylinder (14). A third heat insulation cotton (15) is fixedly connected to the front end of the air outlet inner cap (16). An air outlet outer cap (6) is fixedly connected to the front end of the third heat insulation cotton (15). An air outlet pipe (2) is fixedly connected to the middle of the inner wall of the air outlet inner cap (16).

3. An engineering machine muffler according to claim 1, characterized in that: The inner cylinder (14) has a first cavity (9) on the rear side of its inner wall, and the air inlet pipe (3) has several through holes on its side wall, and the through holes are connected to the first cavity (9).

4. An engineering machine muffler according to claim 2, characterised in that: A third cavity (8) is provided on the front side of the inner wall of the inner cylinder (14). One end of the inner tube (10) located on the upper side of the inner wall of the inner cylinder (14) passes through the side wall of the partition plate (12) on the front side of the inner wall of the inner cylinder (14) and communicates with the third cavity (8).

5. An engineering machine muffler according to claim 4, characterised in that: The other end of the inner tube (10) located on the lower side of the inner wall of the inner cylinder (14) passes through the side wall of the partition plate (12) on the rear side of the inner wall of the inner cylinder (14) and communicates with the first cavity (9).

6. An engineering machine muffler according to claim 4, characterised in that: One end of the air outlet pipe (2) passes through the outer end cap (6) and the inner end cap (16) and is connected to the third cavity (8).

7. An engineering machine muffler according to claim 1, characterized in that: The sidewalls of the two inner tubes (10) are provided with holes.

8. An engineering machine muffler according to claim 1, characterized in that: The inner wall of the air inlet pipe (3) is welded to the plug (5), and the plug (5) and the inner wall of the air inlet pipe (3) are compatible with each other.

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