CN214577315U

CN214577315U - Silencer

Info

Publication number: CN214577315U
Application number: CN202120386978.1U
Authority: CN
Inventors: 余明春; 王锐; 赵凯
Original assignee: Chongqing Zongshen General Power Machine Co Ltd
Current assignee: Chongqing Zongshen General Power Machine Co Ltd
Priority date: 2021-02-22
Filing date: 2021-02-22
Publication date: 2021-11-02
Anticipated expiration: 2031-02-22

Abstract

The utility model relates to an use noise eliminator technical field of structural feature as characteristics, specifically be a silencer, including the silencer barrel, the inside of silencer barrel is provided with first cavity and second cavity, first cavity passes through the connecting pipe intercommunication with the second cavity, be provided with the first intercommunication punch combination with first cavity intercommunication on the connecting pipe, still be provided with the second intercommunication punch combination with second cavity intercommunication on the connecting pipe, be provided with the air inlet with first cavity intercommunication on the silencer barrel, be provided with the gas vent with second cavity intercommunication on the silencer barrel, the connecting pipe has the tip of one end and the sealed laminating of inner wall of first cavity or second cavity at least. This scheme provides a simple structure, processing manufacturing cost lower silencer.

Description

Silencer

Technical Field

The utility model relates to an use noise eliminator technical field of structural feature as characteristics, specifically be a silencer.

Background

A muffler is a device for reducing noise when exhaust gas of an engine is discharged. The existing silencer is provided with a plurality of cavities, and the cavities are communicated through pipelines, so that the silencer is easy to have a complex structure and high in processing and manufacturing cost.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a simple structure, processing manufacturing cost are lower silencer.

In order to achieve the purpose, the utility model discloses a basic scheme provides a silencer, including the silencer barrel, the inside of silencer barrel is provided with first cavity and second cavity, first cavity passes through the connecting pipe intercommunication with the second cavity, be provided with the first intercommunication punch combination with first cavity intercommunication on the connecting pipe, still be provided with the second intercommunication punch combination with the second cavity intercommunication on the connecting pipe, be provided with the air inlet with first cavity intercommunication on the silencer barrel, be provided with the gas vent with the second cavity intercommunication on the silencer barrel, the connecting pipe has the tip of one end and the sealed laminating of inner wall of first cavity or second cavity at least.

The principle and the beneficial effect of the basic scheme are as follows: waste gas enters into first cavity from the air inlet after, again enters into in the connecting tube through first intercommunication punch combination from first cavity, then in the rethread second intercommunication punch combination enters into the second cavity, discharges from the gas vent with the second cavity intercommunication at last to the realization subdues waste gas exhaust noise, reaches the purpose of eliminating the noise. The end part of at least one end of the connecting pipe is in sealing fit with the inner wall of the first cavity or the second cavity, so that the end part of the connecting pipe is blocked by the inner wall of the first cavity or the second cavity, and parts such as end covers for blocking do not need to be arranged independently, the number of the parts is reduced, the structure is simplified, and the processing and manufacturing cost is reduced.

Furthermore, the end part of one end of the connecting pipe, which is positioned in the second cavity, is in sealing fit with the inner wall of the second cavity, and the end part of one end of the connecting pipe, which is positioned in the first cavity, is in sealing connection with an end cover. By adopting the arrangement, waste gas in the first cavity can better enter the connecting pipe from the first communicating hole group, and simultaneously, waste gas in the connecting pipe can better enter the second cavity through the second communicating hole group, so that the flow path of the waste gas is ensured, and the silencing effect is ensured. Meanwhile, one end of the connecting pipe is plugged by the end cover, and the other end of the connecting pipe is plugged by a mode of being tightly attached to the inner wall of the second cavity, so that the connecting pipe is convenient to process and assemble, and the processing and assembling difficulty of the connecting pipe is reduced.

Further, the exhaust port comprises a plurality of exhaust holes formed in the silencer cylinder, and the exhaust holes are distributed along the outer side of the joint face of the end of the connecting pipe and the inner wall of the second cavity. With the adoption of the arrangement, after the waste gas enters the second chamber from the connecting pipe, the waste gas can flow along the axial direction parallel to the connecting pipe and then is discharged from the exhaust hole, so that the flow path of the waste gas is short, and the waste gas discharged from the second chamber is convenient to discharge.

Further, the exhaust direction of the exhaust port is perpendicular to the air inlet direction of the air inlet. By adopting the arrangement mode, when the silencer cylinder body is arranged on the engine and is close to the air inlet of the engine, the exhaust port of the silencer can be far away from the air inlet of the engine as far as possible, and the temperature rise problem of the engine can be improved.

Drawings

Fig. 1 is a schematic view of an embodiment of a muffler of the present invention;

fig. 2 is a distribution diagram of the exhaust port on the muffler shell of fig. 1.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the silencer cylinder body 1, the first cavity 11, the second cavity 12, the exhaust port 13, the partition 2, the connecting pipe 3, the first communicating hole group 31, the second communicating hole group 32, the end cover 4 and the air inlet pipe 5.

The embodiment is basically as shown in the attached figures 1 and 2: a silencer comprises a silencer cylinder body 1, wherein the silencer cylinder body 1 is made of a metal shell. The silencer cylinder 1 is internally provided with a cylindrical partition 2, and the opening of the partition 2 is hermetically connected with the inner wall of the silencer cylinder 1, so that the partition 2 divides the internal space of the silencer cylinder 1 into a first chamber 11 and a second chamber 12. An air inlet communicated with the first cavity 11 is formed in the silencer cylinder body 1, and an air inlet pipe 5 is installed at the air inlet. The silencer cylinder 1 is internally provided with a connecting pipe 3, and the axial direction of the connecting pipe 3 is vertical to the axial direction of the air inlet pipe 5. The connecting pipe 3 is arranged through the partition 2, one end of the connecting pipe 3 is positioned in the first chamber 11, and the other end is positioned in the second chamber 12. The end portion of one end of the connecting pipe 3 located in the first cavity 11 is hermetically connected with an end cover 4, the end portion of the connecting pipe 3 is plugged through the end cover 4, meanwhile, a first connecting hole group 31 is circumferentially arranged at a position of the connecting pipe 3 located in the first cavity 11, the first connecting hole group 31 is composed of a plurality of first communicating hole groups 31 distributed along the circumferential direction of the connecting pipe 3, and the connecting pipe 3 is communicated with the first cavity 11 through the first communicating hole groups 31. The end part of one end of the connecting pipe 3, which is positioned in the second chamber 12, is in sealing fit with the inner wall of the silencer cylinder 1, so that the end part of the connecting pipe 3 is blocked by the inner wall of the silencer cylinder 1; the connecting pipe 3 is provided with a second communicating hole group 32 at a position inside the second chamber 12, the second communicating hole group 32 is composed of a plurality of second communicating hole groups 32 distributed along the circumferential direction of the connecting pipe 3, and the connecting pipe 3 is communicated with the second chamber 12 through the second communicating hole groups 32. The silencer cylinder 1 is provided with an exhaust port 13 communicated with the second cavity 12, in the embodiment, the exhaust port 13 is composed of a plurality of exhaust holes, and all the exhaust holes are circumferentially distributed around the outer side of the position where the connecting pipe 3 is attached to the silencer cylinder 1. A mesh-like cover body covering the exhaust port 13 is connected to the muffler cylinder 1.

The specific implementation process is as follows: after entering the first chamber 11 from the air inlet, the exhaust gas enters the connecting pipe 3 from the first chamber 11 through the first communicating hole group 31, then enters the second chamber 12 through the second communicating hole group 32, and finally is discharged from the exhaust port 13 communicated with the second chamber 12, so that the noise of the exhaust gas is reduced, and the purpose of silencing is achieved.

The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent.

Claims

1. The utility model provides a silencer, includes the silencer barrel, the inside of silencer barrel is provided with first cavity and second cavity, first cavity passes through the connecting pipe intercommunication with the second cavity, be provided with the first intercommunication punch combination with first cavity intercommunication on the connecting pipe, still be provided with the second intercommunication punch combination with second cavity intercommunication on the connecting pipe, be provided with the air inlet with first cavity intercommunication on the silencer barrel, be provided with the gas vent with second cavity intercommunication on the silencer barrel, its characterized in that: the end part of at least one end of the connecting pipe is in sealing fit with the inner wall of the first cavity or the second cavity.

2. A muffler according to claim 1, wherein: the end part of one end of the connecting pipe, which is positioned in the second cavity, is in sealing fit with the inner wall of the second cavity, and the end part of one end of the connecting pipe, which is positioned in the first cavity, is in sealing connection with the end cover.

3. A muffler according to claim 2, wherein: the exhaust port comprises a plurality of exhaust holes formed in the silencer cylinder body, and the exhaust holes are distributed along the outer side of the binding face of the end part of the connecting pipe and the inner wall of the second cavity.

4. A muffler according to claim 3, wherein: the exhaust direction of the exhaust port is perpendicular to the air inlet direction of the air inlet.