CN213510799U

CN213510799U - Noise reduction device for internal combustion engine

Info

Publication number: CN213510799U
Application number: CN202121113256.5U
Authority: CN
Inventors: 殷爱军; 曹政坤; 侯跃艳; 陈光亮; 丁磊; 李文龙; 李建勇; 万德省; 程晶晶
Original assignee: Shandong Supermaly Power Technology Co ltd
Current assignee: Shandong Suli Power Technology Co ltd
Priority date: 2021-05-24
Filing date: 2021-05-24
Publication date: 2021-06-22
Anticipated expiration: 2031-05-24

Abstract

The utility model discloses a device of making an uproar falls in amortization for internal-combustion engine, including the silencer body, the right side intercommunication of silencer body has the exhaust manifold body, the inner wall fixedly connected with of silencer body inhales sound cover one, inhale the inner wall fixedly connected with ripple of sound cover one and inhale the sound cover, the inside that the sound cover was inhaled to the ripple is provided with the gas diffusing pipe, the gas port that looses has been seted up on gas diffusing pipe's surface, the inner wall fixedly connected with of gas diffusing pipe is located the solid fixed ring in the gas port outside that looses. The utility model discloses a set up silencer body, exhaust manifold body, inhale sound cover one, the ripple inhales sound cover, the gas diffusing pipe, the gas diffusing port and the cooperation of solid fixed ring and use, solved in internal-combustion engine exhaust waste gas, can have and be mingled with the high-speed waste gas of sound wave pulsation, after the inside that gets into the silencer, can make the partial gas flow direction change, make the casing of silencer can produce the vibration, and then generate new noise, lead to the unsatisfactory problem of amortization noise reduction effect.

Description

Noise reduction device for internal combustion engine

Technical Field

The utility model relates to an internal-combustion engine technical field specifically is a device of making an uproar falls in amortization for internal-combustion engine.

Background

The internal combustion engine is a heat engine which burns fuel in the machine and directly converts the heat energy emitted by the fuel into power, and the exhaust gas in the exhaust manifold is exhausted to the interior of a silencer through an exhaust valve to carry out noise treatment in the running process of the internal combustion engine.

SUMMERY OF THE UTILITY MODEL

For the problem that provides among the above-mentioned background of the invention, the utility model aims to provide a device of making an uproar falls in amortization for internal-combustion engine has possessed the good advantage of noise reduction effect, has solved in internal-combustion engine exhaust waste gas, can have and be mingled with the pulsive high-speed waste gas of sound wave, after the inside that gets into the silencer, can make the partial gas flow direction change, makes the casing of silencer can produce the vibration, and then the new noise of generation, leads to the unsatisfactory problem of noise reduction effect.

In order to achieve the above object, the utility model provides a following technical scheme: a silencing and noise reducing device for an internal combustion engine comprises a silencer body, wherein the right side of the silencer body is communicated with an exhaust main pipe body, the inner wall of the silencer body is fixedly connected with a sound absorbing sleeve I, the inner wall of the sound absorbing sleeve I is fixedly connected with a corrugated sound absorbing sleeve, a gas diffusing pipe is arranged in the corrugated sound absorbing sleeve, the surface of the gas diffusing pipe is provided with a gas diffusing port, the inner wall of the gas diffusing pipe is fixedly connected with a fixing ring positioned outside the gas diffusing port, the inside of the gas diffusing pipe is slidably connected with a sound absorbing plate, the left side of the gas diffusing pipe is fixedly connected with the left side of the inner wall of the sound absorbing sleeve I, the left side of the silencer body is fixedly connected with an extension pipe, the left side of the silencer body is communicated with an exhaust pipe, the left side of the exhaust pipe is positioned in the extension pipe, the, the left side intercommunication of extension pipe has jet-propelled pipe, the inside of jet-propelled pipe is through connecting block fixedly connected with supporting shoe, the right side fixedly connected with spring of supporting shoe, the inside vertical fly leaf that is provided with of sound cover is inhaled to the egg, the right-hand member of spring and the left side fixed connection of fly leaf.

As the utility model discloses preferred, the fixed surface of gas dispersing pipe is connected with the lag, the lag is located the outside of gas dispersing port, one side that the lag is close to the gas dispersing port extends to the inside of gas dispersing port and with the inner wall fixed connection of gas dispersing port.

As the utility model discloses it is preferred, the left side fixedly connected with gag lever post of fly leaf, the gag lever post is located the inside of spring.

As the utility model discloses it is preferred, the left end of gag lever post runs through to the left side and the fixedly connected with limiting plate of supporting shoe, the shape of limiting plate is circular.

As the utility model discloses it is preferred, the right side fixedly connected with of limiting plate is located the blotter on limiting rod surface, the right side of blotter and the left side contact of supporting shoe.

As the utility model discloses it is preferred, the quantity of abatvoix and gas port that looses is a plurality of, inhale sound cover one, inhale sound cover two, lag and abatvoix and make by inhaling the sound cotton.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model discloses a set up silencer body, exhaust manifold body, inhale sound cover one, the ripple inhales sound cover, the gas diffusing pipe, the gas diffusing port and the cooperation of solid fixed ring and use, solved in internal-combustion engine exhaust waste gas, can have and be mingled with the high-speed waste gas of sound wave pulsation, after the inside that gets into the silencer, can make the partial gas flow direction change, make the casing of silencer can produce the vibration, and then generate new noise, lead to the unsatisfactory problem of amortization noise reduction effect.

2. The utility model discloses a set up the lag, can avoid taking place the friction from the air that the gas port that looses distributes and the inner wall of gas port that looses, further reduced the phenomenon of air and gas port noise generation that looses.

3. The utility model discloses a set up the gag lever post, can carry on spacingly to spring and fly leaf, avoided spring and fly leaf to take place the phenomenon of rocking in the use, improved the stability of spring and fly leaf.

4. The utility model discloses a set up the limiting plate, can carry on spacingly to the gag lever post, avoided the gag lever post to take place the phenomenon that breaks away from with the supporting shoe, improved the stability of gag lever post.

5. The utility model discloses a set up the blotter, can cushion the contact department of limiting plate and supporting shoe, produce great noise when having avoided limiting plate and supporting shoe to take place to contact, improved the practicality of limiting plate and supporting shoe.

6. The utility model discloses a quantity with abatvoix and gas port all sets up to a plurality of, can make the inside air evenly distributed of gas pipe that looses to the inside that the ripple inhaled the sound cover, convenient to use person uses.

Drawings

FIG. 1 is a schematic front view of the structure of the present invention;

FIG. 2 is an enlarged structural view of the point A in FIG. 1 according to the present invention;

FIG. 3 is an enlarged view of the structure at B of FIG. 1 according to the present invention;

FIG. 4 is an enlarged view of the structure of FIG. 1 at C according to the present invention;

FIG. 5 is a perspective view of the structure limiting rod of the present invention;

fig. 6 is a right-side view of the structural support block of the present invention.

In the figure: 1. a muffler body; 2. an exhaust manifold body; 3. a first sound absorption sleeve; 4. a corrugated sound absorbing sleeve; 5. an air diffusing pipe; 6. an air diffuser; 7. a fixing ring; 8. a sound-absorbing panel; 9. an extension pipe; 10. an exhaust pipe; 11. a second sound-absorbing sleeve; 12. an egg sound-absorbing sleeve; 13. a gas ejector tube; 14. a support block; 15. a spring; 16. a movable plate; 17. a protective sleeve; 18. a limiting rod; 19. a limiting plate; 20. a cushion pad.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1 to 6, the utility model provides a silencing and noise reducing device for an internal combustion engine, which comprises a silencer body 1, the right side of the silencer body 1 is communicated with an exhaust main pipe body 2, the inner wall of the silencer body 1 is fixedly connected with a sound absorbing sleeve 3, the inner wall of the sound absorbing sleeve 3 is fixedly connected with a corrugated sound absorbing sleeve 4, the corrugated sound absorbing sleeve 4 is internally provided with a gas dispersing pipe 5, the surface of the gas dispersing pipe 5 is provided with a gas dispersing port 6, the inner wall of the gas dispersing pipe 5 is fixedly connected with a fixing ring 7 positioned outside the gas dispersing port 6, the inside of the gas dispersing pipe 5 is slidably connected with a sound absorbing plate 8, the left side of the gas dispersing pipe 5 is fixedly connected with the left side of the inner wall of the sound absorbing sleeve 3, the left side of the silencer body 1 is fixedly connected with an extension pipe 9, the left side of the silencer body 1 is communicated with an exhaust pipe, the inner wall fixedly connected with egg of extension pipe 9 inhales sound cover 12, and the left side intercommunication of extension pipe 9 has jet-propelled pipe 13, and connecting block fixedly connected with supporting shoe 14 is passed through to jet-propelled pipe 13's inside, and the right side fixedly connected with spring 15 of supporting shoe 14, the egg inhale the vertical fly leaf 16 that is provided with in inside of sound cover 12, the right-hand member of spring 15 and the left side fixed connection of fly leaf 16, fly leaf 16 do not inhale the contact of sound cover 12 inner wall with the egg, leave the space between.

Referring to fig. 3, a protecting cover 17 is fixedly connected to the surface of the air diffusing pipe 5, the protecting cover 17 is located outside the air diffusing port 6, and one side of the protecting cover 17 close to the air diffusing port 6 extends to the inside of the air diffusing port 6 and is fixedly connected with the inner wall of the air diffusing port 6.

As a technical optimization scheme of the utility model, through setting up lag 17, can avoid taking place the friction from the air that the gas vent 6 gived off and the inner wall of gas vent 6, further reduced the phenomenon of air and gas vent 6 noise generation.

Referring to fig. 2, a stopper rod 18 is fixedly connected to the left side of the movable plate 16, and the stopper rod 18 is located inside the spring 15.

As a technical optimization scheme of the utility model, through setting up gag lever post 18, can carry on spacingly to spring 15 and fly leaf 16, avoided spring 15 and fly leaf 16 to take place the phenomenon of rocking in the use, improved spring 15 and fly leaf 16's stability.

Referring to fig. 2, the left end of the stopper rod 18 penetrates to the left side of the support block 14 and is fixedly connected with a stopper plate 19, and the stopper plate 19 is circular in shape.

As a technical optimization scheme of the utility model, through setting up limiting plate 19, can carry on spacingly to gag lever post 18, avoided gag lever post 18 to take place the phenomenon that breaks away from with supporting shoe 14, improved gag lever post 18's stability.

Referring to fig. 2, a cushion 20 is fixedly attached to the right side of the stopper plate 19 on the surface of the stopper bar 18, and the right side of the cushion 20 is in contact with the left side of the supporting block 14.

As a technical optimization scheme, through setting up blotter 20, can cushion limiting plate 19 and supporting shoe 14's contact department, produce great noise when having avoided limiting plate 19 and supporting shoe 14 to take place to contact, improved limiting plate 19 and supporting shoe 14's practicality.

Referring to fig. 1, the number of the sound-absorbing plate 8 and the number of the air diffuser 6 are respectively a plurality, and the sound-absorbing sleeve 3, the sound-absorbing sleeve 11, the protective sleeve 17 and the sound-absorbing plate 8 are all made of sound-absorbing cotton.

As a technical optimization scheme of the utility model, all set up to a plurality of through the quantity with abatvoix 8 and gas port 6, can make the inside air evenly distributed of gas pipe 5 that looses to the inside of ripple sound absorption cover 4, convenient to use person uses.

The utility model discloses a theory of operation and use flow: when the exhaust silencer is used, waste gas of an external internal combustion engine enters the silencer body 1 through the exhaust main pipe body 2, firstly enters the interior of the air diffusion pipe 5 to be in contact with the surface of the sound absorption plate 8, when the waste gas is in contact with the sound absorption plate 8, the sound absorption plate 8 is pushed leftwards in the interior of the air diffusion pipe 5, the pressure of the waste gas obtains a buffering force, the sound absorption plate 8 is limited under the action of the fixing ring 7 after sliding for a certain distance, the rest waste gas sequentially passes through the sound absorption plates 8 to continuously circulate leftwards, so that sound wave pulsation in the waste gas is absorbed and weakened by the sound absorption plates 8, the rest waste gas flows from the interior of the air diffusion port 6 to the outer side of the air diffusion pipe 5, and is subjected to multiple noise reduction and silencing under multiple contacts with the corrugated sound absorption sleeve 4, so that the sound wave pulsation in the waste gas is further weakened, and the sound wave pulsation emitted to the outer side by the silencer body 1 is further reduced under the, the remaining waste gas passes through the inside that blast pipe 10 got into extension pipe 9, pressure through in the waste gas pushes movable plate 16 to one side of spring 15 and supporting shoe 14, because supporting shoe 14 is the abnormal shape, make waste gas can be quick pass through from the left side of supporting shoe 14, make the sound wave pulsation in the waste gas gradually with the egg inhale the inner wall contact of sound cover 12, make the sound wave pulsation further weaken the back, through extension pipe 9 and jet-propelled pipe 13 the inside of circulating waste gas to jet-propelled pipe 13, and then make the sound wave pulsation in the jet-propelled pipe 13 exhaust waste gas reduce to minimum, thereby reach the good effect of amortization noise reduction effect.

In summary, the following steps: this device of making an uproar falls in amortization for internal-combustion engine, through setting up silencer body 1, exhaust main pipe body 2, inhale sound cover 3, the ripple inhales sound cover 4, air diffuser 5, in the gas port 6 that looses and the cooperation of solid fixed ring 7 are used, the exhaust waste gas of internal-combustion engine has been solved, can have and be mingled with the high-speed waste gas of sound wave pulsation, after the inside of getting into the silencer, can make the partial gas flow direction change, the casing that makes the silencer can produce the vibration, and then new noise occurs, lead to the unsatisfactory problem of amortization noise reduction effect.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a device of making an uproar falls in amortization for internal-combustion engine, includes silencer body (1), its characterized in that: the silencer is characterized in that the right side of the silencer body (1) is communicated with an exhaust main pipe body (2), the inner wall of the silencer body (1) is fixedly connected with a sound-absorbing sleeve (3), the inner wall of the sound-absorbing sleeve (3) is fixedly connected with a corrugated sound-absorbing sleeve (4), the interior of the corrugated sound-absorbing sleeve (4) is provided with a diffuser (5), the surface of the diffuser (5) is provided with a diffuser (6), the inner wall of the diffuser (5) is fixedly connected with a fixing ring (7) positioned on the outer side of the diffuser (6), the interior of the diffuser (5) is slidably connected with a sound-absorbing plate (8), the left side of the diffuser (5) is fixedly connected with the left side of the inner wall of the sound-absorbing sleeve (3), the left side of the silencer body (1) is fixedly connected with an extension pipe (9), the left side of the silencer body (1) is communicated with an exhaust pipe (10), and the left side of, the utility model discloses a sound absorbing structure, including blast pipe (10), inner wall fixedly connected with sound absorbing sleeve two (11) of blast pipe (10), the inner wall fixedly connected with egg of extension pipe (9) inhales sound sleeve (12), the left side intercommunication of extension pipe (9) has jet-propelled pipe (13), connecting block fixedly connected with supporting shoe (14) is passed through to the inside of jet-propelled pipe (13), the right side fixedly connected with spring (15) of supporting shoe (14), the egg inhales the vertical fly leaf (16) that is provided with in inside of sound sleeve (12), the right-hand member of spring (15) and the left side fixed connection of fly leaf (16).

2. A noise reducing device for an internal combustion engine according to claim 1, wherein: the surface of the air diffusing pipe (5) is fixedly connected with a protective sleeve (17), the protective sleeve (17) is positioned on the outer side of the air diffusing port (6), and one side, close to the air diffusing port (6), of the protective sleeve (17) extends into the air diffusing port (6) and is fixedly connected with the inner wall of the air diffusing port (6).

3. A noise reducing device for an internal combustion engine according to claim 1, wherein: the left side of the movable plate (16) is fixedly connected with a limiting rod (18), and the limiting rod (18) is located inside the spring (15).

4. A noise reducing device for an internal combustion engine according to claim 3, wherein: the left end of the limiting rod (18) penetrates through the left side of the supporting block (14) and is fixedly connected with a limiting plate (19), and the limiting plate (19) is circular.

5. The noise reduction device according to claim 4, wherein: the right side of the limiting plate (19) is fixedly connected with a cushion pad (20) positioned on the surface of the limiting rod (18), and the right side of the cushion pad (20) is in contact with the left side of the supporting block (14).

6. A noise reducing device for an internal combustion engine according to claim 1, wherein: the number of the sound-absorbing plates (8) and the number of the air diffusing ports (6) are respectively a plurality of, and the sound-absorbing sleeve I (3), the sound-absorbing sleeve II (11), the protecting sleeve (17) and the sound-absorbing plates (8) are all made of sound-absorbing cotton.