Exhaust chimney outlet protection device of diesel locomotive

Abstract

The utility model relates to the technical field of internal combustion locomotives, in particular to an internal combustion locomotive exhaust chimney outlet protection device which comprises an assembling base, an expansion chamber is fixedly installed at the upper end of the assembling base, a filtering and cleaning assembly is arranged on the outer side of a connecting pipe, and a noise reduction and contraction assembly is connected to the upper portion of the filtering and cleaning assembly. The filtering and cleaning assembly comprises a filter cover movably covering the outer side of the connecting pipe; the silencing contraction assembly comprises a contraction chamber fixedly installed at the upper end of the assembly block, and springs are fixedly connected to the upper end face and the lower end face of the bearing installation plate. According to the utility model, the noise reduction contraction assembly is matched with the filtering and cleaning assembly, so that the self-cleaning of the filter casing can be realized through uninterrupted impact vibration of smoke, and smoke dust and harmful particles accumulated on the surface of the filter casing in the interception and filtering process of the filter casing can be removed in time; smoke dust and harmful particles in the intercepted and filtered smoke are prevented from being accumulated on the surface of the filter cover, so that the exhaust efficiency and the filtering and intercepting effect of the smoke are not influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of exhaust gas of internal combustion locomotives, in particular to an exhaust chimney outlet protection device of internal combustion locomotives. Background Art

[0002] A diesel locomotive exhaust chimney is a device used by a diesel locomotive to discharge exhaust gases. It is similar to an exhaust pipe, but is usually larger in scale and is suitable for heavy machinery such as diesel locomotives. When a diesel locomotive is running, fuel is burned inside the engine, producing exhaust gases. These exhaust gases pass through the exhaust system and are eventually discharged into the atmosphere by the exhaust chimney.

[0003] The exhaust chimney outlet protection device of a diesel locomotive is an important part to ensure the safe operation of the locomotive. Its main function is to prevent the high-temperature exhaust gas from damaging the surrounding environment and reduce the impact on the environment. Its main work is to protect the chimney outlet, prevent external impurities from entering, and ensure that the exhaust gas meets environmental protection standards.

[0004] In the existing technical solution, the protective device includes a protective cover, which is tightly installed on the chimney outlet. The protective cover is equipped with a filtering system, which can intercept and filter out smoke and harmful particles in the exhaust gas. However, when the filtering system is working, the smoke and harmful particles in the intercepted and filtered smoke will accumulate on the surface of the filter net, and the filter net cannot remove the smoke and harmful particles accumulated on its surface in time during the interception and filtration process, so the filter net will affect the exhaust efficiency of the smoke and also affect the filtering and interception effect. Summary of the invention

[0005] The purpose of the utility model is to provide an exhaust chimney outlet protection device for a diesel locomotive, which can realize self-cleaning of the filter cover through the uninterrupted impact vibration of the smoke through the cooperation of the silencer contraction component and the filter cleaning component, so that the smoke and harmful particles accumulated on the surface of the filter cover during the interception and filtration process can be removed in time, avoiding the accumulation of smoke and harmful particles in the intercepted and filtered smoke on the surface of the filter cover, which affects the exhaust efficiency and filtering interception effect of the smoke, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a diesel locomotive exhaust chimney outlet protection device, comprising an assembly base, an expansion chamber is fixedly installed on the upper end of the assembly base, a connecting pipe is fixedly connected to the upper end of the expansion chamber, a filter cleaning component is arranged on the outer side of the connecting pipe, and a silencer shrinking component is connected above the filter cleaning component;

[0007] The filter cleaning assembly comprises a filter housing with a movable cover arranged outside the connecting pipe, and the filter housing is in a hollow truncated cone structure, the upper end of the filter housing is fixedly connected to a connecting top plate with an arc-shaped upper end surface, and a plurality of assembly blocks are fixedly installed at the edge of the upper end surface of the connecting top plate;

[0008] The muffler shrinkage assembly comprises a shrinkage chamber fixedly mounted on the upper end of the assembly block, a load-bearing mounting plate is fixedly mounted on the outer wall of the shrinkage chamber, and springs are fixedly connected to the upper and lower end surfaces of the load-bearing mounting plate.

[0009] Preferably, a plurality of assembly screw holes are provided at equal angles inside the edge of the assembly base.

[0010] Preferably, the filtering and cleaning assembly further comprises a cleaning filtering chamber fixedly connected to the upper end of the expansion chamber, and the expansion chamber is communicated with the cleaning filtering chamber via a connecting pipe.

[0011] Preferably, a sealing plate is rotatably mounted on the outer wall of the clean filter chamber, and a rotating shaft is connected between the sealing plate and the outer wall of the clean filter chamber.

[0012] Preferably, the upper end of the cleaning filter chamber is fixedly connected to a shell, and a plurality of smoke exhaust dispersion holes distributed at equal angles are provided on the outer wall of the upper end of the shell.

[0013] Preferably, a plurality of auxiliary sound-absorbing and smoke-exhausting components are arranged inside the shell, and the auxiliary sound-absorbing and smoke-exhausting components include a first sound-absorbing plate and a second sound-absorbing plate fixedly mounted on the inner wall of the shell.

[0014] Preferably, a silencer and smoke exhaust channel is formed between the adjacent first silencer plates and the second silencer plates, and both the first silencer plates and the second silencer plates are designed with circular openings.

[0015] Preferably, two arc-shaped sound-absorbing discs are fixedly mounted on the inner wall of the contraction chamber, and a plurality of flow holes distributed at equal angles are opened on the inner wall of the bottom end of the contraction chamber.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The silencer shrinkage component and the filter cleaning component provided in the utility model cooperate with each other, and can realize the self-cleaning of the filter cover through the uninterrupted impact vibration of the smoke, so that the smoke and harmful particles accumulated on the surface of the filter cover during the interception and filtration process can be removed in time, and the smoke and harmful particles in the intercepted and filtered smoke are prevented from accumulating on the surface of the filter cover, which affects the exhaust efficiency and filtering and interception effect of the smoke;

[0018] 2. The utility model forms a multi-stage silencer structure through the combined use of an expansion chamber, a connecting pipe and a contraction chamber, thereby effectively reducing the noise generated during smoke exhaust and improving the silencer effect; the auxiliary silencer smoke exhaust component can absorb the noise, and the smoke circulating in the auxiliary silencer smoke exhaust component can be discharged through the smoke exhaust dispersion hole, thereby achieving the effect of diversion and drainage, so that the smoke discharged from the exhaust chimney can be evenly distributed to different channels to reduce the direct impact of the exhaust on the surrounding environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is the overall structural view of the utility model;

[0021] Figure 2 This is a schematic diagram of the half-section structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the internal structure of the housing of the utility model;

[0023] Figure 4 It is a schematic diagram of the structure of the connection between the filter cleaning component and the silencer shrinking component of the utility model.

[0024] Description of reference numerals:

[0025] 1. Assembly base; 2. Assembly screw hole; 3. Expansion chamber; 4. Connecting pipe; 5. Filter cleaning assembly; 501. Clean filter chamber; 502. Rotating shaft; 503. Sealing plate; 504. Filter cover; 505. Connecting top plate; 506. Assembly block; 6. Housing; 7. Smoke exhaust dispersion hole; 8. Silencer contraction assembly; 801. Contraction chamber; 802. Silencer arc disc; 803. Flow hole; 804. Load-bearing mounting plate; 805. Spring; 9. Auxiliary silencing smoke exhaust assembly; 901. Silencing smoke exhaust channel; 902. First silencing plate; 903. Second silencing plate. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] The utility model provides a technical solution:

[0028] See also Figure 1 , Figure 2 and Figure 4 , a diesel locomotive exhaust chimney outlet protection device, comprising an assembly base 1, a plurality of assembly screw holes 2 are provided at equal angles inside the edge of the assembly base 1, an expansion chamber 3 is fixedly installed on the upper end of the assembly base 1, a connecting pipe 4 is fixedly connected to the upper end of the expansion chamber 3, a filter cleaning component 5 is provided on the outer side of the connecting pipe 4, and a silencer shrinking component 8 is connected above the filter cleaning component 5;

[0029] The filter cleaning assembly 5 includes a filter cover 504 with a movable cover disposed outside the connecting pipe 4, and the filter cover 504 is a hollow truncated cone structure, and the upper end of the filter cover 504 is fixedly connected to a connecting top plate 505 with an arc-shaped upper end surface, and a plurality of assembly blocks 506 are fixedly installed at the edge of the upper end surface of the connecting top plate 505;

[0030] The silencer shrinkage assembly 8 includes a shrinkage chamber 801 fixedly mounted on the upper end of the assembly block 506 , a bearing mounting plate 804 is fixedly mounted on the outer wall of the shrinkage chamber 801 , and springs 805 are fixedly connected to the upper and lower end surfaces of the bearing mounting plate 804 .

[0031] By adopting the above technical solution, when in use, the assembly base 1 is aligned with the exhaust chimney outlet of the internal combustion engine, and the assembly base 1 is fixed to the exhaust chimney outlet of the internal combustion engine by bolts and assembly screw holes 2, so that the smoke discharged from the exhaust chimney can be introduced into the expansion chamber 3, and the smoke in the expansion chamber 3 can be discharged outwardly through the connecting pipe 4 and filtered through the filter cover 504. The filter cover 504 can intercept and filter out smoke and harmful particles in the exhaust. The smoke discharged from the exhaust chimney of the internal combustion locomotive is usually not discharged at a constant speed, but is discharged intermittently. The speed and flow rate of the exhaust will fluctuate with the passage of time. When the exhaust flow rate is large, the airflow will push the connecting top plate 505 to move upward, and the filter cover 504 with a folded design will unfold and allow the smoke flowing through to be introduced into the silencer contraction component 8. The inside of the contraction chamber 801 of the silencer contraction component 8 will pass through the impact of the smoke. The supporting mounting plate 804 and the spring 805 vibrate elastically, and the contraction chamber 801 is fixedly connected to the contraction chamber 801 and the supporting mounting plate 804 through the assembly block 506, so that the vibration can be transmitted to the filter cover 504, and the filter cover 504 itself vibrates, so that the smoke and harmful particles intercepted and filtered on the filter cover 504 will be separated from the filter cover 504 through shaking, so that the self-cleaning of the filter cover 504 can be achieved through the uninterrupted impact vibration of the smoke, so that the smoke and harmful particles accumulated on the surface of the filter cover 504 during the interception and filtration process can be removed in time, and the smoke and harmful particles in the intercepted and filtered smoke can be prevented from accumulating on the surface of the filter cover 504, which affects the exhaust efficiency and filtering interception effect of the smoke. At the same time, the filtered smoke can be discharged through the contraction chamber 801, and the connecting top plate 505 with an arc-shaped structure on the upper end face can prevent external impurities from falling into the exhaust chimney outlet.

[0032] Specifically, Figures 1 to 3As shown, the filter cleaning assembly 5 also includes a clean filter chamber 501 fixedly connected to the upper end of the expansion chamber 3, and the bottom end of the filter cover 504 is folded and stacked on the bottom end surface of the clean filter chamber 501, so that the filter cover 504 can be prevented from being separated from the bottom end surface of the clean filter chamber 501 when vibrating and moving upward, thereby preventing the filter cover 504 from being separated from the clean filter chamber 501 when the filter cover 504 moves and vibrates, causing the smoke to be discharged from the gap without being filtered. The expansion chamber 3 is connected to the clean filter chamber 501 through the connecting pipe 4. A sealing plate 503 is rotatably installed on the outer wall of the clean filter chamber 501, and a rotating shaft 502 is connected between the sealing plate 503 and the outer wall of the clean filter chamber 501. The upper end of the cleaning filter chamber 501 is fixedly connected to the shell 6, and a plurality of smoke exhaust dispersion holes 7 distributed at equal angles are provided on the upper outer wall of the shell 6. A plurality of auxiliary sound-absorbing and smoke exhaust components 9 are provided inside the shell 6. The auxiliary sound-absorbing and smoke exhaust components 9 include a first sound-absorbing plate 902 and a second sound-absorbing plate 903 fixedly mounted on the inner wall of the shell 6. A sound-absorbing and smoke exhaust channel 901 is formed between the adjacent first sound-absorbing plate 902 and the second sound-absorbing plate 903. Both the first sound-absorbing plate 902 and the second sound-absorbing plate 903 are designed with circular openings. Two sound-absorbing arc discs 802 are fixedly mounted on the inner wall of the contraction chamber 801, and a plurality of flow holes 803 distributed at equal angles are provided on the inner wall of the bottom end of the contraction chamber 801.

[0033] By adopting the above technical solution, the smoke in the expansion chamber 3 can be discharged into the clean filter chamber 501 through the connecting pipe 4, and the self-cleaning of the filter cover 504 can be realized by the uninterrupted impact vibration of the smoke. The smoke and harmful particles that fall during the vibration can be stored on the bottom end surface of the clean filter chamber 501, so it is necessary to regularly clean the smoke and harmful particles in the clean filter chamber 501. The bottom end of the filter cover 504 is folded and accumulated on the bottom end surface of the clean filter chamber 501. When cleaning, the sealing plate 503 is pulled by the handle, and the sealing plate 503 The shaft 502 is rotated to open, and at the same time, the bottom of the filter cover 504 is lifted up, so that the bottom of the filter cover 504 is separated from the bottom end surface of the clean filter chamber 501, so that the smoke and harmful particles separated by the filter cover 504 can be cleaned; when the smoke discharged from the exhaust chimney is introduced into the expansion chamber 3, the expansion chamber 3 can make the noise generated by the exhaust gas fully expand and reflect in the expansion chamber 3, so as to reduce the noise level, and the diameter of the connecting pipe 4 will be smaller than the diameter of the expansion chamber 3, so as to form a sudden change in the cross-sectional area, thereby increasing the noise sound wave. Reflection, the connecting pipe 4 introduces the noise into the contraction chamber 801 through the gap and the flow hole 803 between the connecting top plate 505 and the contraction chamber 801, and a smaller internal space volume is formed in the contraction chamber 801 through the sound-absorbing arc disc 802, so that the flow rate of the noise sound wave is increased by reducing the cross-sectional area, thereby increasing the dissipation of the noise sound wave, so that the expansion chamber 3, the connecting pipe 4 and the contraction chamber 801 are used in combination to form a multi-stage sound-absorbing structure, which can effectively reduce the noise generated during smoke exhaust and improve the sound-absorbing effect; and the generated noise can flow in the sound-absorbing smoke exhaust channel 901, so that the first sound-absorbing plate 902 and the second sound-absorbing plate 903 can absorb the noise, and the sound-absorbing smoke exhaust channel 901 formed by the first sound-absorbing plate 902 and the second sound-absorbing plate 903 can also allow smoke to flow therethrough and be discharged through the smoke exhaust dispersion hole 7, thereby achieving the effect of diversion and diversion, so that the smoke discharged from the exhaust chimney can be evenly distributed to different channels to reduce the direct impact of the exhaust on the surrounding environment.

[0034] Working principle: When in use, the assembly base 1 is aligned with the exhaust chimney outlet of the internal combustion engine, and the assembly base 1 is fixed to the exhaust chimney outlet of the internal combustion engine through bolts and assembly screw holes 2, so that the smoke discharged from the exhaust chimney can be introduced into the expansion chamber 3, and the smoke in the expansion chamber 3 can be discharged outward through the connecting pipe 4. The filter cleaning component 5 can intercept and filter out the smoke and harmful particles in the exhaust gas, and the silencer contraction component 8 cooperates with the filter cleaning component 5, so that the filter cover 504 can be self-cleaned through the uninterrupted impact vibration of the smoke, and the filter cover 504 can be cleaned by the filter cover 504. The filtered smoke and harmful particles can be cleaned regularly; at the same time, the noise generated when the exhaust chimney discharges smoke can be used in combination with the expansion chamber 3, the connecting pipe 4 and the contraction chamber 801 to form a multi-stage silencer structure, which can effectively reduce the noise generated during smoke exhaust and improve the silencer effect. The auxiliary silencer smoke exhaust component 9 can absorb the noise circulating in the silencer smoke exhaust channel 901, and make the smoke circulating in the silencer smoke exhaust channel 901 be discharged from the smoke exhaust dispersion hole 7, thereby achieving the effect of diversion and diversion smoke exhaust.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A protection device for an exhaust chimney outlet of a diesel locomotive, comprising an assembly base (1), Features: An expansion chamber (3) is fixedly mounted on the upper end of the assembly base (1), a connecting pipe (4) is fixedly connected to the upper end of the expansion chamber (3), a filter cleaning assembly (5) is provided on the outer side of the connecting pipe (4), and a silencer shrinking assembly (8) is provided above the filter cleaning assembly (5); The filtering and cleaning assembly (5) comprises a filter cover (504) with a movable cover arranged outside the connecting pipe (4), and the filter cover (504) is in a hollow truncated cone structure, the upper end of the filter cover (504) is fixedly connected to a connecting top plate (505) with an upper end surface in an arc-shaped structure, and a plurality of assembly blocks (506) are fixedly installed at the edge of the upper end surface of the connecting top plate (505); The silencer shrinkage assembly (8) comprises a shrinkage chamber (801) fixedly mounted on the upper end of the assembly block (506), a load-bearing mounting plate (804) fixedly mounted on the outer wall of the shrinkage chamber (801), and springs (805) fixedly connected to the upper and lower end surfaces of the load-bearing mounting plate (804).

2. A diesel locomotive exhaust chimney outlet protection device according to claim 1, Features: A plurality of assembly screw holes (2) are provided at equal angles inside the edge of the assembly base (1).

3. A diesel locomotive exhaust chimney outlet protection device according to claim 1, Features: The filtering and cleaning assembly (5) further comprises a cleaning filtering chamber (501) fixedly connected to the upper end of the expansion chamber (3); the expansion chamber (3) is in communication with the cleaning filtering chamber (501) via a connecting pipe (4).

4. A diesel locomotive exhaust chimney outlet protection device according to claim 3, Features: A sealing plate (503) is rotatably mounted on the outer wall of the clean filter chamber (501), and a rotating shaft (502) is connected between the sealing plate (503) and the outer wall of the clean filter chamber (501).

5. A diesel locomotive exhaust chimney outlet protection device according to claim 4, Features: The upper end of the cleaning filter chamber (501) is fixedly connected to a housing (6), and a plurality of smoke exhaust dispersion holes (7) distributed at equal angles are provided on the outer wall of the upper end of the housing (6).

6. A diesel locomotive exhaust chimney outlet protection device according to claim 5, Features: A plurality of auxiliary sound-absorbing and smoke-exhausting components (9) are arranged inside the shell (6), and the auxiliary sound-absorbing and smoke-exhausting components (9) comprise a first sound-absorbing plate (902) and a second sound-absorbing plate (903) fixedly mounted on the inner wall of the shell (6).

7. A diesel locomotive exhaust chimney outlet protection device according to claim 6, Features: A silencer and smoke exhaust passage (901) is formed between the adjacent first silencer plate (902) and the second silencer plate (903), and both the first silencer plate (902) and the second silencer plate (903) are designed with circular openings.

8. A diesel locomotive exhaust chimney outlet protection device according to claim 1, Features: Two arc-shaped sound-absorbing discs (802) are fixedly mounted on the inner wall of the contraction chamber (801), and a plurality of flow holes (803) distributed at equal angles are opened on the inner wall at the bottom end of the contraction chamber (801).

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