CN215521031U

CN215521031U - Automobile exhaust pipe with silencing structure

Info

Publication number: CN215521031U
Application number: CN202122010145.8U
Authority: CN
Inventors: 邵盛日
Original assignee: Zhoushan Yijin Auto Parts Co ltd
Current assignee: Zhoushan Yijin Auto Parts Co ltd
Priority date: 2021-08-25
Filing date: 2021-08-25
Publication date: 2022-01-14
Anticipated expiration: 2031-08-25

Abstract

The utility model discloses an automobile exhaust pipe with a silencing structure, which relates to the field of automobile silencing and comprises an S-shaped exhaust pipe, wherein a silencing box is arranged on one side of the S-shaped exhaust pipe, a silencing pipe is arranged on one side of the silencing box, a first sound insulating plate and a second sound insulating plate are fixedly arranged in the silencing box, and the second sound insulating plate is positioned between the first sound insulating plate and the silencing pipe. According to the utility model, the exhausted tail gas can enter the sound-absorbing box and firstly blocks the air inlet baffle plate in the sound-absorbing box, more through holes are formed in one side of the air inlet baffle plate, so that part of gas can pass through the air inlet baffle plate, the rest of gas can be dispersed into the sound-absorbing box, more first sound-absorbing plates and more second sound-absorbing plates are arranged in the sound-absorbing box, the gas firstly contacts with the first sound-absorbing plates, the first sound-absorbing plates and the second sound-absorbing plates are made of aluminum silicate cotton, and the aluminum silicate cotton has excellent thermal stability, chemical stability and sound absorption property, and can deal with high-temperature gas which enters from beginning and absorb sound.

Description

Automobile exhaust pipe with silencing structure

Technical Field

The utility model relates to the technical field of automobile silencing, in particular to an automobile exhaust pipe with a silencing structure.

Background

The corrugated pipe for automobile exhaust is also called as flexible pipe for automobile exhaust pipe, and is installed in the exhaust pipe between the engine exhaust branch pipe and the silencer to make the whole exhaust system in flexible connection, so as to play the roles of damping vibration and reducing noise, facilitating installation and prolonging the service life of the exhaust silencing system. The structure of the vehicle is that a steel wire net sleeve is covered outside a double-layer corrugated pipe, and snap rings are covered outside straight edge sections at two ends of the double-layer corrugated pipe, so that the noise elimination effect is better, and an expansion joint or a net sleeve can be matched inside the corrugated pipe.

In the noise of motor vehicles, exhaust noise is one of main noise sources, the development of society is faster and faster, the holding capacity of automobiles is more and more, the noise pollution of motor vehicles is more and more, the daily life of people is seriously influenced, and a silencing structure is required to be added on an exhaust pipe to reduce the noise generated in the driving process of the automobiles, so that the requirement of people is met by the automobile exhaust pipe with the silencing structure.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an automobile exhaust pipe with a silencing structure, and aims to solve the problems that in the noise of a motor vehicle, the exhaust noise is one of main noise sources, the development of the society is faster and faster, the holding capacity of the automobile is more and more, the noise pollution of the motor vehicle is more and more, the daily life of people is seriously influenced, and the silencing structure needs to be added on the exhaust pipe to reduce the noise generated by the automobile in the driving process.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides an automobile exhaust pipe with amortization structure, includes S type blast pipe, the whistle box is installed to one side of S type blast pipe, and the hush pipe is installed to one side of whistle box, fixed mounting has first acoustic celotex board and second acoustic celotex board in the hush box, and the second acoustic celotex board is located between first acoustic celotex board and the hush pipe, a plurality of first air vents have been seted up to one side of first acoustic celotex board, all install first soundproof cotton in a plurality of first air vents, and a plurality of second air vents have been seted up to one side of second acoustic celotex board, all install the second soundproof cotton in a plurality of second air vents, install first hush board and second hush board in the hush box.

Preferably, an air inlet baffle is installed in the sound muffling box and located between the S-shaped exhaust pipe and the first sound insulating plate, and a plurality of through holes are formed in one side of the air inlet baffle.

Preferably, two connecting columns are fixedly mounted on one side of the air inlet baffle, one ends of the two connecting columns are fixedly mounted on the inner wall of one side of the sound muffling box, and the two connecting columns are located on two sides of the S-shaped exhaust pipe.

Preferably, an air inlet is formed in the inner wall of one side of the sound muffling box, one end of the S-shaped exhaust pipe movably penetrates through the air inlet, and a connecting sleeve is fixedly mounted on one side of the sound muffling box and is sleeved on the S-shaped exhaust pipe.

Preferably, a plurality of annular cooling fins are installed on the S-shaped exhaust pipe and are arranged at equal intervals.

Preferably, the inner wall of one side of the silencing box is provided with an air outlet, the air outlet corresponds to the air inlet in position, and the silencing pipe is arranged in the air outlet.

Preferably, the first sound-absorbing plate is located between the first sound-absorbing plate and the S-shaped exhaust pipe, the second sound-absorbing plate is located between the first sound-absorbing plate and the second sound-absorbing plate, and the first sound-absorbing plate and the second sound-absorbing plate are made of aluminum silicate cotton.

The utility model has the beneficial effects that:

in the utility model, the exhaust pipe of the automobile is set into an S-shaped structure, the length of the exhaust pipe can be increased by the S-shaped structure, the gas exhausted by the automobile has higher problems, the S-shaped exhaust pipe can better radiate heat, a plurality of annular radiating fins are sleeved on the S-shaped exhaust pipe and can radiate the S-shaped exhaust pipe, thus the heat radiation of the exhausted gas is accelerated, the high-temperature gas is prevented from damaging the following silencing equipment, the exhausted tail gas enters the silencing box and is firstly blocked with the air inlet baffle plate in the silencing box, one side of the air inlet baffle plate is provided with more through holes, so that part of the gas can pass through the through holes, the rest of the gas can be dispersed into the silencing box, more first silencing plates and more second silencing plates are arranged in the silencing box, the gas can be firstly contacted with the first silencing plate, the first silencing plate and the second silencing plate are made of aluminum silicate wool, the aluminum silicate cotton has excellent thermal stability, chemical stability and sound absorption, and can respond to high-temperature gas coming in at the beginning and absorb sound;

according to the utility model, gas can pass through the first sound insulation board, one side of the first sound insulation board is provided with a plurality of first vent holes, first soundproof cotton is arranged in the first vent holes, sound can be absorbed by the arrangement of the first soundproof cotton, then the gas can pass through the second sound insulation board, one side of the second sound insulation board is provided with a plurality of second vent holes, second soundproof cotton is arranged in the second vent holes, the second soundproof cotton is arranged, the discharged gas is further absorbed, so that the sound can be eliminated, and finally the gas is discharged through the sound eliminating pipe.

Drawings

FIG. 1 is a schematic three-dimensional structure of an exhaust pipe with a sound-deadening structure according to the present invention;

FIG. 2 is a schematic sectional view of an exhaust pipe with a sound-deadening structure according to the present invention;

FIG. 3 is a schematic structural diagram of a local explosion of an automobile exhaust pipe with a sound-deadening structure according to the present invention;

fig. 4 is a schematic structural diagram of a portion a in fig. 2 of an exhaust pipe provided with a sound attenuation structure according to the present invention.

In the figure: 1. an S-shaped exhaust pipe; 2. a sound silencing box; 3. an air inlet; 4. connecting sleeves; 5. an air outlet; 6. a sound-deadening tube; 7. connecting columns; 8. an intake baffle; 9. a through hole; 10. a first acoustical panel; 11. a second acoustical panel; 12. a first baffle plate; 13. a first vent hole; 14. a first soundproof cotton; 15. a second baffle; 16. a second vent hole; 17. a second soundproof cotton; 18. an annular heat sink.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-4, an automobile exhaust pipe with a silencing structure comprises an S-shaped exhaust pipe 1, a silencing box 2 is installed on one side of the S-shaped exhaust pipe 1, a silencing pipe 6 is installed on one side of the silencing box 2, a first sound-insulating plate 12 and a second sound-insulating plate 15 are fixedly installed in the silencing box 2, the second sound-insulating plate 15 is located between the first sound-insulating plate 12 and the silencing pipe 6, a plurality of first air vents 13 are formed in one side of the first sound-insulating plate 12, first soundproof cotton 14 are installed in the first air vents 13, a plurality of second air vents 16 are formed in one side of the second sound-insulating plate 15, second soundproof cotton 17 are installed in the second air vents 16, and a first silencing plate 10 and a second silencing plate 11 are installed in the silencing box 2.

According to the utility model, the air inlet baffle 8 is arranged in the sound attenuation box 2, the air inlet baffle 8 is positioned between the S-shaped exhaust pipe 1 and the first sound insulation plate 12, one side of the air inlet baffle 8 is provided with a plurality of through holes 9, and the air inlet baffle 8 can block and disperse the entering air, so that the first sound attenuation plate 10 can absorb sound better.

According to the utility model, two connecting columns 7 are fixedly arranged on one side of the air inlet baffle 8, one ends of the two connecting columns 7 are fixedly arranged on the inner wall of one side of the sound muffling box 2, and the two connecting columns 7 are positioned on two sides of the S-shaped exhaust pipe 1, so that the air inlet baffle 8 is conveniently arranged on the inner wall of the sound muffling box 2.

According to the utility model, the inner wall of one side of the sound attenuation box 2 is provided with the air inlet 3, one end of the S-shaped exhaust pipe 1 movably penetrates through the air inlet 3, one side of the sound attenuation box 2 is fixedly provided with the connecting sleeve 4, and the connecting sleeve 4 is sleeved on the S-shaped exhaust pipe 1, so that the S-shaped exhaust pipe 1 and the sound attenuation box 2 can be conveniently connected.

According to the utility model, the S-shaped exhaust pipe 1 is provided with the plurality of annular radiating fins 18, the plurality of annular radiating fins 18 are arranged at equal intervals, the plurality of annular radiating fins 18 are sleeved on the S-shaped exhaust pipe 1, and the plurality of annular radiating fins 18 can radiate the S-shaped exhaust pipe 1, so that the radiation of the exhausted gas is accelerated, and the high-temperature gas is prevented from damaging the following silencing equipment.

In the utility model, the inner wall of one side of the silencing box 2 is provided with the air outlet 5, the air outlet 5 corresponds to the air inlet 3, the silencing pipe 6 is arranged in the air outlet 5, and the air outlet 5 is arranged to facilitate the discharge of air.

In the utility model, the first sound-absorbing plate 10 is positioned between the first sound-absorbing plate 12 and the S-shaped exhaust pipe 1, the second sound-absorbing plate 11 is positioned between the first sound-absorbing plate 12 and the second sound-absorbing plate 15, the first sound-absorbing plate 10 and the second sound-absorbing plate 11 are made of aluminum silicate cotton, and the aluminum silicate cotton has excellent thermal stability, chemical stability and sound-absorbing property, and can respond to high-temperature gas coming in and absorb sound.

This practical theory of operation:

in the utility model, the exhaust pipe of the automobile is set to be an S-shaped structure, the length of the exhaust pipe can be increased by the S-shaped structure, the gas exhausted by the automobile has higher problem, the S-shaped exhaust pipe 1 can radiate better, a plurality of annular radiating fins 18 are sleeved on the S-shaped exhaust pipe 1, the plurality of annular radiating fins 18 can radiate the S-shaped exhaust pipe 1, thus the heat radiation of the exhausted gas is accelerated, the high-temperature gas is prevented from damaging the following silencing equipment, the exhausted tail gas can enter the silencing box 2 and firstly blocks the air inlet baffle plate 8 in the silencing box 2, one side of the air inlet baffle plate 8 is provided with more through holes 9, so that a part of gas can pass through the through holes, the rest of gas can be dispersed into the silencing box 2, more first silencing plates 10 and more second silencing plates 11 are arranged in the silencing box 2, the gas can firstly contact with the first silencing plates 10, the first sound-absorbing board 10 and the second sound-absorbing board 11 are made of aluminum silicate cotton, the aluminum silicate cotton has excellent thermal stability, chemical stability and sound-absorbing property, and can deal with high-temperature gas which just starts to enter, the gas temperature can be reduced along with continuous movement, the gas can pass through the first sound-absorbing board 12, one side of the first sound-absorbing board 12 is provided with a plurality of first vent holes 13, the first sound-absorbing cotton 14 is arranged in the plurality of first vent holes 13, the first sound-absorbing cotton 14 can absorb sound, the gas can pass through the second sound-absorbing board 15, one side of the second sound-absorbing board 15 is provided with a plurality of second vent holes 16, the plurality of second vent holes 16 are all provided with second sound-absorbing cotton 17, the second sound-absorbing cotton 17 is arranged to further absorb sound of the discharged gas, thereby playing a sound-absorbing role, and finally the gas is discharged through the sound-absorbing pipe 6, and the arranged multilayer sound-absorbing device can absorb the noise of the discharged gas, greatly reducing the noise pollution of the city.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The utility model provides an automobile exhaust pipe with amortization structure, includes S type blast pipe (1), its characterized in that: silencing box (2) are installed to one side of S type blast pipe (1), and silencing pipe (6) are installed to one side of silencing box (2), fixed mounting has first acoustic celotex board (12) and second acoustic celotex board (15) in silencing box (2), and second acoustic celotex board (15) are located between first acoustic celotex board (12) and silencing pipe (6), a plurality of first air vents (13) have been seted up to one side of first acoustic celotex board (12), all install first soundproof cotton (14) in a plurality of first air vents (13), and a plurality of second air vents (16) have been seted up to one side of second acoustic celotex board (15), all install second soundproof cotton (17) in a plurality of second air vents (16), install first silencing board (10) and second silencing board (11) in silencing box (2).

2. The exhaust pipe provided with a sound deadening structure according to claim 1, wherein: an air inlet baffle (8) is installed in the sound muffling box (2), the air inlet baffle (8) is located between the S-shaped exhaust pipe (1) and the first sound insulating plate (12), and a plurality of through holes (9) are formed in one side of the air inlet baffle (8).

3. The exhaust pipe provided with a sound deadening structure according to claim 2, wherein: one side of the air inlet baffle (8) is fixedly provided with two connecting columns (7), one ends of the two connecting columns (7) are fixedly arranged on the inner wall of one side of the sound muffling box (2), and the two connecting columns (7) are positioned on two sides of the S-shaped exhaust pipe (1).

4. The exhaust pipe provided with a sound deadening structure according to claim 1, wherein: an air inlet hole (3) is formed in the inner wall of one side of the sound attenuation box (2), one end of the S-shaped exhaust pipe (1) movably penetrates through the air inlet hole (3), a connecting sleeve (4) is fixedly mounted on one side of the sound attenuation box (2), and the connecting sleeve (4) is sleeved on the S-shaped exhaust pipe (1).

5. The exhaust pipe provided with a sound deadening structure according to claim 1, wherein: a plurality of annular cooling fins (18) are installed on the S-shaped exhaust pipe (1), and the annular cooling fins (18) are arranged at equal intervals.

6. The exhaust pipe provided with a sound deadening structure according to claim 1, wherein: an air outlet hole (5) is formed in the inner wall of one side of the silencing box (2), the air outlet hole (5) corresponds to the air inlet hole (3), and the silencing pipe (6) is installed in the air outlet hole (5).

7. The exhaust pipe provided with a sound deadening structure according to claim 1, wherein: the first sound-absorbing plate (10) is located between the first sound-absorbing plate (12) and the S-shaped exhaust pipe (1), the second sound-absorbing plate (11) is located between the first sound-absorbing plate (12) and the second sound-absorbing plate (15), and the first sound-absorbing plate (10) and the second sound-absorbing plate (11) are made of aluminum silicate wool.