Diesel engine exhaust silencer with spark extinguishing function

Abstract

The diesel engine exhaust silencer with the spark extinguishing function comprises a silencer shell, a connecting pipe is installed at the left end of the silencer shell, a limiting structure is connected to the outer side of the left end of the connecting pipe, an air inlet pipe is installed on the inner side of the limiting structure, and a sealing ring is connected to the right side of the air inlet pipe. A barrier plate is fixedly mounted on the left side of the interior of the silencer shell, and a silencing plate is fixedly connected to the middle side of the interior of the silencer shell. And the air outlet pipe is fixedly installed on the right side of the silencer shell, the right side of the interior of the silencer shell is connected with a filter screen, a feeding pipe is installed on the right side of the upper end of the silencer shell, the interior of the feeding pipe is connected with a connecting plug, a bearing box is fixedly installed on the lower side of the interior of the silencer shell, and a cover body is arranged on the left side of the bearing box. According to the diesel engine exhaust silencer with the spark extinguishing function, exhaust gas can be conveniently purified, the silencer can be conveniently installed, and sparks can be conveniently extinguished.

Description

Technical Field

[0001] This utility model relates to the field of diesel engine exhaust technology, specifically to a diesel engine exhaust muffler with spark extinguishing function. Background Technology

[0002] A muffler is a noise reduction device used in airflow ducts that simultaneously transmit noise. It utilizes pipes with sound-absorbing linings, bends, or pipes with sudden changes in cross-sectional area or other discontinuous acoustic impedance. Diesel engine exhaust refers to the process of emitting exhaust gases during diesel engine operation. A muffler is needed to reduce the noise of the exhaust gases during this process. The use of a spark-extinguishing structure in a diesel engine exhaust muffler improves its effectiveness. For example:

[0003] Chinese Patent Publication No. CN217002025U discloses a diesel engine exhaust purification muffler, including an exhaust pipe with a spiral muffler plate installed inside. The spiral muffler plate has several small flow holes along the exhaust direction of the exhaust pipe. The spiral structure of the muffler plate ensures the flow of exhaust gas while dispersing the exhaust gas. After passing through the small flow holes, the exhaust gas is dispersed more evenly. The muffler plate improves the noise reduction effect by mimicking the principle of a shotgun muffler. The exhaust end of the exhaust pipe is covered with a purification muffler sleeve that allows gas flow and has multiple exhaust holes on its outer wall. The external purification muffler sleeve increases the thickness of the exhaust pipe and improves the noise reduction effect. The purification muffler sleeve includes an outer sleeve with a filter element installed inside. Some of the exhaust gas inside the exhaust pipe enters the inner sleeve and is filtered by the filter element before being discharged, which can improve the purification effect of the exhaust gas.

[0004] The existing technical solutions mentioned above have the following drawbacks: when purifying exhaust gas, the purification is carried out through a filter element; the installation effect of ordinary diesel engine exhaust mufflers is not good; and it is not convenient to extinguish sparks in diesel engine exhaust gas. Therefore, this utility model provides a diesel engine exhaust muffler with spark extinguishing function to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this utility model is to provide a diesel engine exhaust muffler with spark extinguishing function, in order to solve the problems mentioned in the background art, such as the poor installation effect of ordinary diesel engine exhaust mufflers when purifying exhaust through a filter element, and the inconvenience of extinguishing sparks in diesel engine exhaust.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a muffler for diesel engine exhaust with spark extinguishing function, comprising a muffler housing, a connecting pipe installed at its left end, and a limiting structure connected to the outer side of the left end of the connecting pipe, an intake pipe installed on the inner side of the limiting structure, and a sealing ring connected to the right side of the intake pipe, a baffle plate fixedly installed on the left side inside the muffler housing, and a muffler plate fixedly connected to the middle side inside the muffler housing, and a muffler ring connected inside the muffler plate;

[0007] An exhaust pipe is fixedly installed on the right side of the muffler housing, and a filter screen is connected to the inside right side of the muffler housing. A feed pipe is installed on the upper right side of the muffler housing, and a connecting plug is connected inside the feed pipe. A carrier box is fixedly installed on the lower inside of the muffler housing, and a cover is provided on the left side of the carrier box, and a connecting pipe is installed on the right side of the cover.

[0008] Preferably, the feed pipe and the connecting plug are connected by a snap-fit ​​method, and the vertical cross-sectional shape of the connecting plug is a "T" shaped structure.

[0009] Preferably, the connecting pipe is connected to the cover by welding, and the vertical cross-section of the connecting pipe is an "L" shaped structure.

[0010] Preferably, the sound-absorbing plates are evenly distributed on the inner side of the muffler housing, and the surface of the sound-absorbing plates is provided with a perforated structure.

[0011] Preferably, the vertical cross-sectional shape of the barrier plate is an arc-shaped structure, which serves to extinguish the sparks.

[0012] Preferably, the limiting structure includes a movable rod, which is installed on the outer side of the left end of the connecting tube, and a clamping plate is connected to the inner side of the movable rod.

[0013] Preferably, the moving rod and the connecting pipe are connected by threads, and the moving rod is connected to the clamping plate through a bearing.

[0014] Preferably, the clamping plate is connected to the air intake pipe by a fitting method, and the clamping plate is symmetrically distributed about the center line of the air intake pipe.

[0015] Compared with the prior art, the beneficial effects of this utility model are: the diesel engine exhaust muffler with spark extinguishing function facilitates exhaust purification, muffler installation, and spark extinguishing;

[0016] By placing the muffler housing on the right side of the intake pipe, the connecting pipe is engaged with the outside of the intake pipe. Rotating the moving rod causes it to be threaded onto the outside of the left end of the connecting pipe. This allows the clamping plate, which is connected to the moving rod via a bearing, to slide inward, thereby clamping the intake pipe. This facilitates the fixing of the connecting pipe to the right side of the intake pipe, thus making it easier to secure the muffler housing.

[0017] Exhaust gas is expelled through the intake pipe into the connecting pipe, causing the gas to collide with the inside of the baffle plate, thus extinguishing any sparks carried in the gas. Additionally, silencers are evenly distributed on the inside of the muffler housing, and each silencer has a sound-absorbing ring inside for easy noise reduction.

[0018] The gas enters the connecting pipe through the cover, and then enters the carrier box. This allows the urea solution inside the carrier box to mix and react with the gas, facilitating the purification of the exhaust. The exhaust is then further purified by a filter screen fixedly installed on the rear side of the muffler housing. Attached Figure Description

[0019] Figure 1 This is a schematic cross-sectional view of the connection between the muffler housing and the connecting pipe of this utility model.

[0020] Figure 2 This is a schematic diagram of the exploded structure of the connection between the muffler housing and the baffle plate of this utility model;

[0021] Figure 3 This is a schematic cross-sectional view of the connection between the muffler plate and the muffler housing of this utility model.

[0022] Figure 4 This utility model Figure 3 Enlarged schematic diagram of the connection structure at point A;

[0023] Figure 5 This is a schematic diagram of the overall structure of the connection between the sound-absorbing plate and the sound-absorbing ring of this utility model.

[0024] In the diagram: 1. Silencer housing; 2. Connecting pipe; 3. Inlet pipe; 4. Outlet pipe; 5. Feed pipe; 6. Connecting plug; 7. Filter screen; 8. Carrier box; 9. Connecting pipe; 10. Cover; 11. Silencing plate; 12. Baffle plate; 13. Sealing ring; 14. Moving rod; 15. Clamping plate; 16. Silencing ring. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-5 This utility model provides a technical solution: a diesel engine exhaust muffler with spark extinguishing function, comprising: a connecting pipe 2 installed on the left end of the muffler housing 1, with a limiting structure connected to the outer side of the left end of the connecting pipe 2; an intake pipe 3 installed on the inner side of the limiting structure, with a sealing ring 13 connected to the right side of the intake pipe 3; a baffle plate 12 fixedly installed on the left side inside the muffler housing 1; a muffler plate 11 fixedly connected to the middle side inside the muffler housing 1; and a muffler ring 16 connected inside the muffler plate 11. The muffler housing 1 is placed on the right side of the intake pipe 3, so that the connecting pipe 2 is engaged with the outer side of the intake pipe 3. The limiting structure is rotated to clamp the intake pipe 3. The connecting pipe 2 is fixedly installed on the right side of the air intake pipe 3, which facilitates the fixation of the muffler housing 1. The sealing ring 13 fixedly installed on the right side of the air intake pipe 3 facilitates the sealing between the connecting pipe 2 and the air intake pipe 3. The air intake pipe 3 exhausts into the interior of the connecting pipe 2, and the gas impacts the interior of the baffle plate 12, so that the sparks carried in the gas collide with the baffle plate 12 and are extinguished, which facilitates the extinguishing of sparks. The muffler plate 11 can collide with the sparks carried in the gas again, ensuring a good extinguishing effect. The muffler plates 11 are evenly distributed on the inside of the muffler housing 1, and the muffler plate 11 is provided with a muffler ring 16 inside, which facilitates the silencing.

[0027] The exhaust pipe 4 is fixedly installed on the right side of the muffler housing 1, and a filter screen 7 is connected to the inside right side of the muffler housing 1. A feed pipe 5 is installed on the upper right side of the muffler housing 1, and a connecting plug 6 is connected inside the feed pipe 5. A carrier box 8 is fixedly installed on the lower inside of the muffler housing 1, and a cover 10 is provided on the left side of the carrier box 8. A connecting pipe 9 is installed on the right side of the cover 10. Gas enters the inside of the connecting pipe 9 through the cover 10, and then enters the inside of the carrier box 8 through the connecting pipe 9. This allows the urea aqueous solution inside the carrier box 8 to mix and react with the gas, facilitating the purification of the exhaust. The exhaust is then further purified by the filter screen 7 fixedly installed on the rear inside of the muffler housing 1. The purified gas is discharged through the exhaust pipe 4. Pulling the feed pipe 5 upward causes it to separate inside the connecting plug 6, facilitating the addition of urea aqueous solution inside the carrier box 8.

[0028] When using a diesel engine exhaust muffler with spark-extinguishing function, specifically as follows: Figure 1 , Figure 3 and Figure 4 In this configuration, the muffler housing 1 is placed on the right side of the intake pipe 3, and the connecting pipe 2 is engaged with the outside of the intake pipe 3. The moving rod 14 is connected to the connecting pipe 2 by a thread, and the moving rod 14 is connected to the clamping plate 15 through a bearing. Rotating the moving rod 14 causes it to be threaded on the outside of the left end of the connecting pipe 2, thereby causing the clamping plate 15, which is connected to the moving rod 14 through the bearing, to slide inward. The clamping plate 15 is connected to the intake pipe 3 by a close fit, and the clamping plate 15 is symmetrically distributed about the center line of the intake pipe 3, thereby clamping the intake pipe 3 with the clamping plate 15. This facilitates the fixing of the connecting pipe 2 to the right side of the intake pipe 3, thus facilitating the fixing of the muffler housing 1. The sealing ring 13 fixedly installed on the right side of the intake pipe 3 facilitates the sealing between the connecting pipe 2 and the intake pipe 3.

[0029] Specific examples Figure 1 , Figure 2 and Figure 5 In the middle, exhaust is discharged into the interior of the connecting pipe 2 through the intake pipe 3. The vertical cross-section of the baffle plate 12 is arc-shaped and plays a role in extinguishing sparks. The gas and sparks are colliding with the interior of the baffle plate 12, so that the sparks carried in the gas collide with the baffle plate 12 and are extinguished. The silencer plate 11 can collide with the sparks carried in the gas again, ensuring a good extinguishing effect. The silencer plates 11 are evenly distributed on the inner side of the silencer housing 1, and the surface of the silencer plates 11 has a perforated structure. The silencer plates 11 are also evenly distributed on the inner side of the silencer housing 1, and the silencer plates 11 are provided with a sound-absorbing ring 16 inside to facilitate noise reduction.

[0030] Specific examples Figure 1 and Figure 3 In the process, gas enters the interior of the connecting pipe 9 through the cover 10. The connecting pipe 9 is connected to the cover 10 by welding, and the vertical cross-section of the connecting pipe 9 is "L" shaped. This allows the gas to enter the interior of the carrier box 8 through the connecting pipe 9, so that the urea aqueous solution inside the carrier box 8 mixes and reacts with the gas, which facilitates the purification of the exhaust gas. The exhaust gas is then further purified by the filter screen 7 fixedly installed on the rear side inside the muffler housing 1. The purified gas is discharged through the exhaust pipe 4. The feed pipe 5 is connected to the connecting plug 6 by a snap-fit ​​method, and the vertical cross-section of the connecting plug 6 is "T" shaped. Pulling the feed pipe 5 upward separates it inside the connecting plug 6, which facilitates the addition of urea aqueous solution inside the carrier box 8.

[0031] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0032] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A muffler for diesel engine exhaust with spark extinguishing function, characterized in that, include: The muffler housing (1) has a connecting pipe (2) installed on its left end, and a limiting structure is connected to the outer side of the left end of the connecting pipe (2). An air intake pipe (3) is installed on the inner side of the limiting structure, and a sealing ring (13) is connected to the right side of the air intake pipe (3). A baffle plate (12) is fixedly installed on the left side inside the muffler housing (1), and a sound-absorbing plate (11) is fixedly connected to the middle side inside the muffler housing (1). A sound-absorbing ring (16) is connected inside the sound-absorbing plate (11). An exhaust pipe (4) is fixedly installed on the right side of the muffler housing (1), and a filter screen (7) is connected to the inside right side of the muffler housing (1). A feed pipe (5) is installed on the upper right side of the muffler housing (1), and a connecting plug (6) is connected inside the feed pipe (5). A carrier box (8) is fixedly installed on the lower inside of the muffler housing (1), and a cover (10) is provided on the left side of the carrier box (8), and a connecting pipe (9) is installed on the right side of the cover (10).

2. A muffler for diesel engine exhaust with spark extinguishing function according to claim 1, characterized in that: The feed pipe (5) and the connecting plug (6) are connected by a snap-fit ​​method, and the vertical cross-section of the connecting plug (6) is a "T" shaped structure.

3. A muffler for diesel engine exhaust with spark extinguishing function according to claim 1, characterized in that: The connecting pipe (9) is connected to the cover (10) by welding, and the vertical cross-section of the connecting pipe (9) is an "L" shaped structure.

4. A muffler for diesel engine exhaust with spark extinguishing function according to claim 1, characterized in that: The silencer plates (11) are evenly distributed on the inner side of the silencer housing (1), and the surface of the silencer plates (11) is provided with a perforated structure.

5. A muffler for diesel engine exhaust with spark extinguishing function according to claim 1, characterized in that: The vertical cross-section of the barrier plate (12) is an arc-shaped structure and serves to extinguish the sparks.

6. A muffler for diesel engine exhaust with spark extinguishing function according to claim 1, characterized in that: The limiting structure includes a movable rod (14), which is installed on the outer side of the left end of the connecting tube (2), and a clamping plate (15) is connected to the inner side of the movable rod (14).

7. A muffler for diesel engine exhaust with spark extinguishing function according to claim 6, characterized in that: The moving rod (14) is connected to the connecting pipe (2) by a thread, and the moving rod (14) is connected to the clamping plate (15) through a bearing.

8. A muffler for diesel engine exhaust with spark extinguishing function according to claim 7, characterized in that: The clamping plate (15) is connected to the air intake pipe (3) by a fitting method, and the clamping plate (15) is symmetrically distributed about the center line of the air intake pipe (3).

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