CN217712723U - Silencer for vehicle exhaust emission - Google Patents

Abstract

The utility model discloses a silencer for vehicle exhaust discharges, including the silencer casing, the both ends of silencer casing communicate respectively has intake pipe and outlet duct, and the inner chamber fixedly connected with filter screen of intake pipe, the fixed plate of distribution about two of the inner chamber fixedly connected with of silencer casing, and the left side of fixed plate has all run through the connecting pipe, the right-hand member of connecting pipe runs through and extends to the outside of fixed plate, this a silencer for vehicle exhaust discharges, tail gas gets into the silencer casing after passing through the filtration buffering of intake pipe filter screen, fall once making an uproar by the through-hole of one of them connecting pipe, then through the S type wind channel that forms between a plurality of buffer boards, buffering wind-force, and carry out the secondary by the amortization cotton and fall the noise, the through-hole that cooperates another connecting pipe carries out the cubic and falls to fall and make an uproar, thereby greatly reduced the noise, fine noise cancelling effect has also been played to the low frequency noise amortization.

Description

Silencer for vehicle exhaust emission

Technical Field

The utility model relates to a silencer technical field specifically is a silencer for vehicle exhaust discharges.

Background

The silencer is used for the airflow pipeline with noise transmission, and can attenuate or reflect the noise in the pipeline by using noise reduction devices such as pipelines and elbows with sound absorption linings or pipelines with suddenly changed sectional areas and other discontinuous acoustic impedances. The former is called resistive muffler, the latter is called reactive muffler, and there are also impedance compound mufflers. The automobile silencer is a component which is installed at the rear section of an automobile exhaust pipe and is used for reducing noise generated when an automobile engine works.

At present automobile muffler mainly utilizes porous sound absorbing material to reduce the noise, however this type of silencer centering the noise cancelling effect of high frequency is better, and is relatively poor to low frequency noise cancelling effect, and the noise of engine mainly is the low frequency noise, for this reason, the utility model provides a silencer for vehicle exhaust discharges.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a silencer for vehicle exhaust discharges to solve the problem that proposes in the background art.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a silencer for vehicle exhaust discharges, includes the silencer casing, the both ends of silencer casing communicate respectively has intake pipe and outlet duct, and the inner chamber fixedly connected with filter screen of intake pipe, the fixed plate that distributes about two of the inner chamber fixedly connected with of silencer casing, and the left side of fixed plate all runs through there is the connecting pipe, the right-hand member of connecting pipe runs through and extends to the outside of fixed plate, a plurality of through-holes have been seted up in the periphery of connecting pipe and the left side that is located the fixed plate, two buffer boards of equal fixedly connected with between the top and the bottom of silencer casing internal surface just are located two fixed plates, and the periphery fixedly connected with amortization cotton of buffer board, the inner chamber of silencer casing just is located the left side fixedly connected with activated carbon layer of outlet duct.

Preferably, the periphery of the connecting pipe is fixedly connected with the penetrating position of the fixing plate.

Preferably, the included angle between the left side of the buffer plate and the cross section of the silencer shell is an acute angle, and the front side and the rear side of the buffer plate are fixedly connected with the inner cavity of the silencer shell.

Preferably, the two buffer plates at the top and the two buffer plates at the bottom are arranged at intervals, and an S-shaped air channel is formed between the two buffer plates at the top and the two buffer plates at the bottom.

Advantageous effects

The utility model provides a silencer for vehicle exhaust discharges. Compared with the prior art, the method has the following beneficial effects:

this a silencer for vehicle exhaust discharges, tail gas gets into the silencer casing after passing through the filtering buffering of intake pipe filter screen, the through-hole by one of them connecting pipe is once fallen and is fallen the noise, then through the S type wind channel that forms between a plurality of buffer boards, cushion wind-force, and fall by the amortization cotton carries out the secondary and falls the noise, the through-hole of another connecting pipe of cooperation carries out the cubic and falls, it falls to inhale the sound and fall the noise to carry out abundant buffering through air current and the sound wave that gets into in the silencer casing, thereby greatly reduced the noise, also played fine noise cancelling effect to the low frequency noise amortization.

Drawings

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

fig. 2 is a cross-sectional view of the present invention.

In the figure: 1. a muffler housing; 2. an air inlet pipe; 3. an air outlet pipe; 4. filtering with a screen; 5. a fixing plate; 6. a connecting pipe; 7. a through hole; 8. a buffer plate; 9. silencing cotton; 10. and an activated carbon layer.

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.

Referring to fig. 1-2, the present invention provides a technical solution: a muffler for vehicle exhaust emission comprises a muffler shell 1, wherein two ends of the muffler shell 1 are respectively communicated with an air inlet pipe 2 and an air outlet pipe 3, an inner cavity of the air inlet pipe 2 is fixedly connected with a filter screen 4, the inner cavity of the muffler shell 1 is fixedly connected with two fixing plates 5 which are distributed left and right, a connecting pipe 6 penetrates through the left sides of the fixing plates 5, the right end of the connecting pipe 6 penetrates through and extends to the outside of the fixing plates 5, the periphery of the connecting pipe 6 is fixedly connected with the penetrating positions of the fixing plates 5, a plurality of through holes 7 are formed in the periphery of the connecting pipe 6 and the left side of the fixing plates 5, two buffer plates 8 are fixedly connected between the top and the bottom of the inner surface of the muffler shell 1 and positioned between the two fixing plates 5, silencing cotton 9 is fixedly connected with the periphery of the buffer plates 8, and the included angle between the left side of the buffer plates 8 and the cross section of the muffler shell 1 is an acute angle, the front side and the rear side of each buffer plate 8 are fixedly connected with the inner cavity of the silencer shell 1, the two buffer plates 8 at the top and the two buffer plates 8 at the bottom are distributed at intervals, an S-shaped air channel is formed between the two buffer plates 8 at the top and the two buffer plates 8 at the bottom, an active carbon layer 10 is fixedly connected to the left side of the air outlet pipe 3 in the inner cavity of the silencer shell 1 to adsorb peculiar smell in air flow and play a certain purifying role, tail gas enters the silencer shell 1 after being filtered and buffered by a filter screen 4 of an air inlet pipe 2, primary noise reduction is carried out by a through hole 7 of one connecting pipe 6, then wind power is buffered by the S-shaped air channels formed among the plurality of buffer plates 8, secondary noise reduction is carried out by silencing cotton 9, tertiary noise reduction is carried out by matching with the through hole 7 of the other connecting pipe 6, sound absorption and noise reduction are fully carried out by buffering the air flow and sound waves entering the silencer shell 1, thereby greatly reducing the noise and playing a good silencing effect on the low-frequency noise.

And those not described in detail in this specification are well within the skill of those in the art.

It should be noted that, in this document, the terms "upper", "lower", "left", "right", and the like are used only for indicating relative positional relationships, and when the absolute position of a described object is changed, the relative positional relationships may be changed, and relational terms such as first and second, and the like are used only for distinguishing one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. 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 (4)

1. A muffler for the exhaust emissions of vehicles, comprising a muffler shell (1), characterized in that: the utility model discloses a silencer, including silencer casing (1), fixed plate (6), connecting pipe (6), fixed plate (5) that distribute about the inner chamber fixedly connected with of silencer casing (1) about two, and the left side of fixed plate (5) all runs through connecting pipe (6), the right-hand member of connecting pipe (6) runs through and extends to the outside of fixed plate (5), the periphery of connecting pipe (6) just is located the left side of fixed plate (5) and has seted up a plurality of through-holes (7), the top and the bottom of silencer casing (1) internal surface just are located two buffer board (8) of equal fixedly connected with between two fixed plate (5), and the periphery fixedly connected with amortization cotton (9) of buffer board (8), the inner chamber of silencer casing (1) just is located the left side fixedly connected with activated carbon layer (10) of outlet duct (3).

2. A muffler for vehicle exhaust emissions according to claim 1, wherein: the periphery of the connecting pipe (6) is fixedly connected with the penetrating position of the fixing plate (5).

3. A muffler for vehicle exhaust emissions according to claim 1, characterized in that: the included angle between buffer board (8) left side and silencer casing (1) cross section is the acute angle, both sides all are connected with the inner chamber fixed connection of silencer casing (1) around buffer board (8).

4. A muffler for vehicle exhaust emissions according to claim 1, wherein: the two buffer plates (8) at the top and the two buffer plates (8) at the bottom are arranged at intervals, and an S-shaped air channel is formed between the two buffer plates (8) at the top and the two buffer plates (8) at the bottom.

Images