CN218971285U

CN218971285U - Silencer for internal combustion engine

Info

Publication number: CN218971285U
Application number: CN202222668046.3U
Authority: CN
Inventors: 罗世明; 廖清; 赵文嘉
Original assignee: Chongqing Guangya Machinery Manufacturing Co ltd
Current assignee: Chongqing Guangya Machinery Manufacturing Co ltd
Priority date: 2022-10-11
Filing date: 2022-10-11
Publication date: 2023-05-05
Anticipated expiration: 2032-10-11

Abstract

The utility model relates to the field of internal combustion engines, in particular to an internal combustion engine silencer, which comprises a device body, a shell and a heat insulation assembly, wherein the heat insulation assembly comprises a heat insulation ring, a supporting rod, a first shell, a second shell and glass fiber cotton, the device body comprises a silencer shell with an air outlet pipe and an air inlet pipe, a core body is arranged in the silencer shell, silencing holes are formed in the air inlet pipe and the air outlet pipe in the silencer shell, the silencing holes are circular holes, the diameter of the silencing holes formed in the core body is set to be 1-3.5mm, so that the sound insulation effect of the silencer is improved, the discharged noise is lower than 76 dB, a space is formed between the heat insulation ring and the first shell to avoid direct contact with the shell, a second space is formed between the first shell and the second shell, the supporting rod is used for connection, the glass fiber cotton is added between the first shell and the second shell, and the glass fiber cotton has the characteristics of good heat insulation and high temperature resistance.

Description

Silencer for internal combustion engine

Technical Field

The utility model relates to the field of internal combustion engines, in particular to a muffler of an internal combustion engine.

Background

When the internal combustion engine works, exhaust gas is discharged from the exhaust pipe, and the sound is loud. This is because the high temperature and high speed air flow expands rapidly when it rushes out of the exhaust pipe, claps the sound of the outside air, the traditional silencer is composed of a core body composed of a baffle plate and a silencing pipe, and the baffle plate and the silencing pipe wall of the core body are provided with circular silencing holes; the sound is partially filtered when the air flow with the sound passes through the core body, so that the purpose of silencing is achieved, but the silencing effect is not obvious.

An existing silencer (CN 2690603Y) for an internal combustion engine comprises a silencer shell with an air outlet pipe and an air inlet pipe, a core body arranged in the silencer shell, and a circular hole with the diameter of 1-3.5mm, wherein the circular hole is formed in a silencing hole on the air inlet pipe and the air outlet pipe and a silencing hole on the core body in the silencer shell. The utility model has the advantages that the diameter of the silencing hole formed on the core body is 1-3.5mm, so that the sound-grating effect of the silencer is improved, the discharged noise is below 76 db, the sound is soft, and the good environmental protection effect is achieved.

However, when the high-temperature air flows into the core body through the air inlet pipe and is silenced through the round hole on the core body, the hot air can be arranged between the shell and the core body, so that the shell heats, and the scald is easy to be caused after the shell is carelessly touched.

Disclosure of Invention

The utility model aims to provide a muffler for an internal combustion engine, which aims to solve the problems that when high-temperature air flows enter a core body through an air inlet pipe and is muffled through a round hole on the core body, hot air can be arranged between a shell and the core body, so that the shell heats and is easy to scald after being touched carelessly.

In order to achieve the above object, the present utility model provides a muffler for an internal combustion engine, comprising a device body, a housing, and a heat insulation assembly including a heat insulation ring, a support rod, a first casing, a second casing, and glass wool,

the heat insulation ring is fixedly connected with the shell and is positioned on one side of the shell, the first sleeve shell is fixedly connected with the heat insulation ring and is positioned on one side of the heat insulation ring, the support rod is fixedly connected with the first sleeve shell and is positioned on one side of the first sleeve shell, the second sleeve shell is fixedly connected with the support rod and is positioned on one side of the support rod away from the first sleeve shell, and the glass fiber cotton is arranged between the first sleeve shell and the second sleeve shell.

The heat insulation assembly further comprises a water cooling pipe, wherein the water cooling pipe is fixedly connected with the shell and is positioned on the outer side of the shell.

The heat insulation assembly further comprises a screen plate, wherein the screen plate is fixedly connected with the first casing, is fixedly connected with the second casing and is located between the first casing and the second casing.

The heat insulation assembly further comprises a water suction pump, wherein the water suction pump is communicated with the water cooling pipe and is positioned on one side of the water cooling pipe.

Wherein the muffler further comprises a mounting assembly coupled to the second housing and located on one side of the housing.

The heat insulation assembly further comprises a sleeve, a round rod, a mounting plate and a locking nut, wherein the sleeve is fixedly connected with the shell and is positioned on one side of the shell, the round rod is in sliding connection with the sleeve and is positioned on the inner side of the sleeve, the mounting plate is fixedly connected with the round rod and is positioned on one side of the round rod, and the locking nut is in threaded connection with the sleeve and is positioned on one side of the sleeve.

The utility model relates to a silencer of an internal combustion engine, which comprises a silencer shell with an air outlet pipe and an air inlet pipe, a core body arranged in the silencer shell, and a silencing hole arranged on the air inlet pipe and the air outlet pipe in the silencer shell and a silencing hole arranged on the core body, wherein the diameter of the circular hole is 1-3.5mm. The utility model has the advantages that the diameter of the silencing hole formed on the core body is between 1 and 3.5mm, so that the sound-absorbing effect of the silencer is improved, the noise discharged is below 76 db, the sound is soft, the good environment-friendly effect is achieved, a space is formed between the heat insulation ring and the first shell, the direct contact of the shell is avoided, a second space is formed between the first shell and the second shell, the support rod is used for connection, the glass fiber cotton is added between the first shell and the second shell, the glass fiber cotton has good heat insulation and high temperature resistance, the silencing performance of the silencer is improved, and the problems that when the high temperature air flow enters the core body through the air inlet pipe and is silenced through the round hole on the core body, the shell heats up between the shell and the core body, and the scald is easy to be caused after the heat is carelessly touched are solved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.

Fig. 1 is a sectional view of a muffler for an internal combustion engine according to a first embodiment of the present utility model.

Fig. 2 is a front view of a muffler for an internal combustion engine according to a first embodiment of the present utility model.

Fig. 3 is a front view of a muffler for an internal combustion engine according to a second embodiment of the present utility model.

101-device body, 102-shell, 103-heat insulation assembly, 104-heat insulation ring, 105-support rod, 106-first shell, 107-second shell, 108-glass fiber cotton, 109-water cooling pipe, 110-screen, 111-water pump, 201-installation assembly, 202-sleeve, 203-round rod, 204-installation plate, 205-lock nut.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

First embodiment

Referring to fig. 1 to 2, fig. 1 is a sectional view of an internal combustion engine muffler according to a first embodiment of the present utility model, and fig. 2 is a front view of the internal combustion engine muffler according to the first embodiment of the present utility model.

The utility model provides a muffler for an internal combustion engine, comprising: comprising a device body 101, a housing 102 and a heat insulation assembly 103, wherein the heat insulation assembly 103 comprises a heat insulation ring 104, a support rod 105, a first casing 106, a second casing 107, glass fiber cotton 108, a water cooling pipe 109, a screen 110 and a water suction pump 111. After having solved high temperature air current by the intake pipe entering core through the aforesaid scheme, when the round hole amortization on the core, steam can be between shell and core, makes the shell generate heat, causes the problem of scald easily after carelessly touching, can understand that the aforesaid scheme can be used in high Wen Changjing, can also be used to the solution of pipeline heat dissipation problem.

In this embodiment, the device body 101 includes a muffler shell with an air outlet pipe and an air inlet pipe, a core body disposed in the muffler shell, and a circular hole formed in a muffler hole on the air inlet pipe and the air outlet pipe and a circular hole formed in the core body, wherein the diameter of the circular hole is 1-3.5mm. The utility model has the advantages that the diameter of the silencing hole formed on the core body is 1-3.5mm, so that the sound-grating effect of the silencer is improved, the discharged noise is below 76 db, the sound is soft, and the good environmental protection effect is achieved.

The heat insulation ring 104 is fixedly connected with the shell 102 and is located at one side of the shell 102, the first shell 106 is fixedly connected with the heat insulation ring 104 and is located at one side of the heat insulation ring 104, the supporting rod 105 is fixedly connected with the first shell 106 and is located at one side of the first shell 106, the second shell 107 is fixedly connected with the supporting rod 105 and is located at one side of the supporting rod 105 far away from the first shell 106, the glass fiber cotton 108 is arranged between the first shell 106 and the second shell 107, a space is formed between the heat insulation ring 104 and the first shell 106 through the heat insulation ring 104, a second space is formed between the first shell 106 and the second shell 107, the supporting rod 105 is used for connection, the glass fiber cotton 108 is added between the first shell 106 and the second shell 107, the glass fiber cotton 108 has good heat insulation and high temperature resistance characteristics, the glass fiber cotton has certain heat insulation performance, the heat insulation performance can be increased, and after the heat insulation device is used for heat insulation, a sound insulation device is easy to solve the problem that a hot air can not easily enter a circular hole after the heat is generated by the heat insulation device, and the heat is easy to get into the shell.

Secondly, the water cooling pipe 109 is fixedly connected with the housing 102 and is located at the outer side of the housing 102, and the water cooling pipe 109 is used for rapidly reducing the temperature of the housing 102, and cooling is performed by introducing cooling liquid into the water cooling pipe 109.

Again, the mesh plate 110 is fixedly connected to the first casing 106 and fixedly connected to the second casing 107, and is located between the first casing 106 and the second casing 107, and the mesh plate 110 is used for preventing the glass fiber cotton 108 from falling out between the first casing 106 and the second casing 107.

Finally, the water pump 111 is in communication with the water cooling pipe 109 and is located at one side of the water cooling pipe 109, and the water pump 111 is convenient to pump cooling liquid into the water cooling pipe 109.

In using the muffler for the internal combustion engine, the device body 101 comprises a muffler shell with an air outlet pipe and an air inlet pipe, a core body arranged in the muffler shell, and a silencing hole arranged on the air inlet pipe and the air outlet pipe in the muffler shell and a silencing hole arranged on the core body are circular holes, wherein the diameter of each circular hole is 1-3.5mm. The utility model has the advantages that the diameter of the silencing hole formed on the core body is between 1 and 3.5mm, so that the sound effect of the silencer grate of the utility model is improved, the discharged noise is below 76 db, the sound is soft, the good environmental protection effect is achieved, a space is formed between the heat insulation ring 104 and the first shell 106, the direct contact of the glass fiber cotton 108 with the shell 102 is avoided, a second space is formed between the first shell 106 and the second shell 107, the support rods 105 are used for connection, the glass fiber cotton 108 is added between the first shell 106 and the second shell 107, the glass fiber cotton 108 has good heat insulation and high temperature resistance, the silencer of the device is improved, the water cooling pipe 109 is used for rapidly reducing the temperature of the shell 102, the cooling liquid is introduced into the water cooling pipe 109 to cool the shell, the screen 110 is used for preventing the glass fiber cotton 108 from falling out of the first shell 106 and the second shell 107, the heat absorption pipe 111 is convenient for the heat absorption pipe to be convenient, and the heat absorption pipe is easy to be convenient for the heat absorption pipe to be cooled, and the heat absorption pipe is easy to be cooled after the heat absorption pipe is easy, and the heat absorption pipe is easy.

Second embodiment

Referring to fig. 3, fig. 3 is a front view of a muffler for an internal combustion engine according to a second embodiment of the present utility model. On the basis of the first embodiment, an internal combustion engine muffler according to the present utility model further includes a mounting assembly 201, a sleeve 202, a round bar 203, a mounting plate 204, and a lock nut 205.

The muffler for an internal combustion engine further comprises a mounting assembly 201, the mounting assembly 201 being connected to the second housing 107 and being located on one side of the housing, the mounting assembly 201 being adapted to secure the device, making it more stable.

Sleeve 202 and shell 102 fixed connection, and be located in one side of shell 102, round bar 203 with sleeve 202 sliding connection, and be located the inboard of sleeve 202, mounting panel 204 with round bar 203 fixed connection, and be located one side of round bar 203, lock nut 205 with sleeve 202 threaded connection, and be located one side of sleeve 202, can be through sliding in sleeve 202 round bar 203, adjust the length of installation component 201, then with lock nut 205 is fixed the position of round bar 203, be equipped with the screw on the mounting panel 204, be convenient for installation and the connection of device and other equipment or contact surface.

The above disclosure is merely illustrative of a preferred embodiment of the muffler for an internal combustion engine, and it is not intended to limit the scope of the utility model, as it is understood by those skilled in the art that all or part of the above embodiments may be implemented and equivalents thereof may be modified to fall within the scope of the utility model.

Claims

1. An internal combustion engine silencer comprises a device body and a shell, and is characterized in that,

the heat insulation assembly comprises a heat insulation ring, a support rod, a first casing, a second casing and glass fiber cotton;

2. An engine muffler as defined in claim 1,

the heat insulation assembly further comprises a water cooling pipe which is fixedly connected with the shell and is positioned on the outer side of the shell.

3. An engine muffler as defined in claim 2,

the heat insulation assembly further comprises a screen plate fixedly connected with the first casing and fixedly connected with the second casing, and located between the first casing and the second casing.

4. An engine muffler as defined in claim 3,

5. An engine muffler as defined in claim 4,