CN218598471U

CN218598471U - Noise eliminator of exhaust duct

Info

Publication number: CN218598471U
Application number: CN202221661211.6U
Authority: CN
Inventors: 张新; 王建超
Original assignee: Nanjing Manse Acoustic Technique Co ltd
Current assignee: Nanjing Manse Acoustic Technique Co ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2023-03-10
Anticipated expiration: 2032-06-30

Abstract

The utility model discloses an exhaust duct's noise eliminator belongs to pipeline noise elimination technical field. The silencer comprises a fan and two groups of silencers, wherein the two groups of silencers are respectively arranged at two ends of the fan and are respectively connected with two ends of a cut exhaust pipeline, so that gas sequentially passes through the silencer connected with the silencer, the fan and the other group of silencers in one exhaust pipeline and enters the other exhaust pipeline; the silencer comprises a silencer body, wherein the silencer body is provided with a plurality of silencer modules, and the silencer modules are arranged in the silencer body.

Description

Noise eliminator for exhaust duct

Technical Field

The utility model relates to a pipeline noise elimination technical field, in particular to exhaust duct's noise eliminator.

Background

When air flows in an air flow channel of aerodynamic equipment (such as a blower, a compressor and the like), noise of the equipment or wind noise generated in the flowing process can be mixed, and when the air flow reaches a certain flow rate, the brought noise can seriously affect the surrounding environment, so that a device for reducing the noise needs to be installed in an exhaust system of the aerodynamic equipment, and a silencer can block the propagation of sound waves while allowing the air flow to pass through, thereby effectively reducing the noise.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an exhaust pipe's noise eliminator to it is great to solve traditional aerodynamic device's exhaust system noise, can cause the problem of serious influence to the surrounding environment.

In order to solve the technical problem, the utility model provides a silencer of an exhaust duct, which is arranged at two ends of a truncated exhaust duct, and comprises two groups of silencers, wherein the two groups of silencers are respectively arranged at two ends of a fan, and the two groups of silencers are respectively connected with two ends of the truncated exhaust duct, so that gas in one of the exhaust ducts sequentially passes through the silencer connected with the silencer, the fan and the other group of silencers to enter the other exhaust duct;

and the two sets of silencers are respectively provided with a silencing module, so that the noise of gas in the exhaust pipeline can be reduced.

Preferably, the blower includes a casing and an impeller, the impeller rotates in the casing and can guide the air to flow in the exhaust duct.

Preferably, the two ends of the fan are respectively connected with the two groups of silencers through reducer pipes.

Preferably, the fan is connected with the reducer pipe through a flexible pipe, and the outer part of the shell of the fan is connected with a building through a damping support.

Preferably, the muffler comprises a shell and a plurality of muffling sheets arranged in the shell, wherein the muffling sheets are arranged in the shell at intervals.

Preferably, the structure of noise damping piece is that two perforated plate bags press from both sides and inhale the sound cotton, the perforated plate is the zinc-plated perforated plate, inhale the sound cotton 32k glass cotton that is thickness 100mm, and it has the non-woven fabrics to wrap up in glass cotton outside.

Preferably, a flow guide angle is arranged on the windward side of the sound-absorbing sheet.

Preferably, the exterior of the housing of the muffler is connected to the building through a fixing bracket.

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

the exhaust pipeline is provided with a silencing device, and the noise of gas inclusion equipment in an exhaust system of the aerodynamic equipment or wind noise formed in the flowing process is reduced through silencing sheets in a plurality of silencers, so that the influence of the noise on the surrounding environment is reduced; and meanwhile, the silencers are arranged at the two ends of the fan, so that the noise of the air inlet and the air outlet of the fan is eliminated, and the noise elimination effect is improved.

Drawings

Fig. 1 is a schematic structural view of a first viewing angle of a muffler device of an exhaust duct according to the present invention;

fig. 2 is a second view structure diagram of a muffler device of an exhaust duct according to the present invention;

fig. 3 is an exploded view of the muffler assembly provided by the present invention;

fig. 4 is a schematic diagram of the internal structure of the muffler provided by the present invention.

In the figure: 1. a fan; 2. a muffler; 3. a reducer pipe; 4. a shock-absorbing support; 5. a fixed bracket; 100. an exhaust duct; 101. a housing; 102. an impeller; 201. a housing; 202. a sound-deadening sheet; 2021. and (6) a flow guide angle.

Detailed Description

The invention is described in further detail below with reference to the figures and the specific embodiments. The advantages and features of the present invention will become more fully apparent from the following description and appended claims. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

Examples

The utility model provides a noise eliminator of exhaust duct please refer to fig. 1 and fig. 2, set up in the exhaust duct 100 both ends that cut off, including two sets of silencers 2, two sets of said silencers 2 set up respectively in fan 1 both ends, and two sets of said silencers 2 are connected with exhaust duct 100 both ends that cut off respectively, make gas pass through in one of them said exhaust duct 100 in proper order with its connection said silencer 2, said fan 1 and another set of said silencer 2 enter in another said exhaust duct 100; the two groups of silencers 2 are respectively provided with a silencing module, so that the noise of the gas in the exhaust pipeline 100 can be reduced; the fan 1 is connected with a building through a damping support 4, and the silencer 2 is connected with the building through a fixing support 5.

Specifically, as shown in fig. 3, the blower 1 includes a casing 101 and an impeller 102, and the impeller 102 rotates in the casing 101 and can guide the air to flow in the exhaust duct 100.

Specifically, fan 1 both ends are respectively through reducing pipe 3 and two sets of silencer 2 is connected, just fan 1 with through the flexible pipe connection between the reducing pipe 3, simultaneously fan 1's casing 101 outside is connected with the building through shock absorber support 4, because fan 1 is the source of noise again in the inevitable production vibrations of working in-process, and the transmission of vibrations, when vibrations transmit to silencer 2 or exhaust duct 100 not only can cause damage between them but also can make it produce the secondary noise, thereby influence noise eliminator's noise elimination effect, so fan 1 with through the flexible pipe connection between the reducing pipe 3, and with through shock absorber support 4 between the building, the transmission of the vibrations of furthest reduction fan 1.

Specifically, the muffler 2 includes a housing 201 and a plurality of muffling sheets 202 disposed in the housing 201, and the muffling sheets 202 are spaced apart from each other in the housing 201.

In some embodiments, as shown in fig. 4, the structure of the sound-absorbing sheet 202 is that two perforated plates sandwich sound-absorbing cotton, the perforated plates are galvanized perforated plates, the sound-absorbing cotton is 32k glass wool with a thickness of 100mm, and the outside of the glass wool is wrapped with non-woven fabric, so as to play a role in fire prevention and water repellency.

Furthermore, a flow guide angle 2021 is arranged on the windward side of the noise reduction sheet 202, and the flow guide angle 2021 is formed by two inclined surfaces approaching each other, so that the air flow can be guided to smoothly enter the gap between the noise reduction sheets 202, and the air flow is prevented from generating large noise at the gap.

The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and any modification and modification made by those skilled in the art according to the above disclosure are all within the scope of the claims.

Claims

1. The silencer of the exhaust duct is arranged at two ends of a truncated exhaust duct (100), and is characterized by comprising two groups of silencers (2), wherein the two groups of silencers (2) are respectively arranged at two ends of a fan (1), and the two groups of silencers (2) are respectively connected with two ends of the truncated exhaust duct (100), so that gas in one exhaust duct (100) sequentially passes through the silencer (2) connected with the silencer, the fan (1) and the other group of silencers (2) and enters the other exhaust duct (100);

the two sets of silencers (2) are respectively provided with a silencing module, so that the noise of gas in the exhaust pipeline (100) can be reduced.

2. A silencer assembly for an exhaust duct according to claim 1, wherein said blower (1) includes a housing (101) and an impeller (102), said impeller (102) rotating in said housing (101) to direct the flow of air through said exhaust duct (100).

3. A silencer assembly for an exhaust duct according to claim 2, wherein said blower (1) is connected at each end to two of said silencer assemblies (2) by means of a reducer (3).

4. A silencer for an exhaust duct according to claim 3, characterized in that the blower (1) is connected with the reducer pipe (3) through a flexible pipe, and the exterior of the casing (101) of the blower (1) is connected with the building through a shock-absorbing bracket (4).

5. A silencer assembly for an exhaust duct according to claim 1, wherein said silencer (2) includes a casing (201) and a plurality of silencing sheets (202) disposed in said casing (201), said plurality of silencing sheets (202) being spaced apart in said casing (201).

6. The muffling device of an exhaust pipe according to claim 5, wherein the muffling sheet (202) is formed by two perforated sheets sandwiching sound-absorbing cotton, the perforated sheets are galvanized perforated sheets, the sound-absorbing cotton is 32k glass wool with a thickness of 100mm, and the glass wool is externally wrapped with non-woven fabric.

7. The muffler device of an exhaust duct according to claim 5, wherein the windward side of the muffler (202) is provided with a flow guiding angle (2021).

8. A silencer assembly for an exhaust duct according to claim 5, wherein the outer portion of the casing (201) of the silencer (2) is connected to the building by means of a fixing bracket (5).