CN219575162U - Matrix noise reduction muffler - Google Patents

Abstract

The utility model provides a silencer of making an uproar falls in matrix, includes the shell, and the shell inner wall is equipped with the damping layer, is equipped with first sound absorption orifice plate in the shell, leaves the clearance between first sound absorption orifice plate and the shell inner wall, and it is cotton to fill in the clearance, is equipped with the baffle at the shell top surface, and it has first fixed plate to distribute on the baffle, rotates on the first fixed plate to be equipped with the fastener, and first fixed plate passes through the fastener to be connected with the shell top surface. The first fixed plate is distributed with the noise elimination layer, and the shell bottom surface is equipped with first flange, and first flange inner wall distributes has the second fixed plate, and the second fixed plate passes through the fastener with the noise elimination layer bottom surface that its corresponds to set up and is connected. According to the utility model, through arranging the silencing layers with different thicknesses, noise with different frequencies can be subjected to maximized silencing, so that the silencing effect of the silencer is improved, and the harm of airflow noise to human bodies is reduced.

Description

Matrix noise reduction muffler

Technical Field

The utility model belongs to the field of silencers, and particularly relates to a matrix noise reduction silencer.

Background

Noise is sound which causes people to be annoyed or has too high volume and endangers human health, airflow noise is one of main factors of noise pollution, and the noise during air flow exhaust is often in a high place, long in propagation distance and wide in influence range. The existing silencer for silencing the air flow is often poor in silencing effect on a certain frequency range because of small silencing amount of various frequency noises in the air flow noise, so that the air flow noise with various frequencies cannot be simultaneously and maximally silencing, and the air flow noise with certain frequency cannot be timely silenced, so that the air flow noise can be continuously transmitted in the air, and the human health is influenced.

Disclosure of Invention

The utility model aims to provide a matrix noise reduction muffler for solving the technical problems in the background technology.

In order to achieve the above purpose, the specific technical scheme of the matrix noise reduction muffler of the utility model is as follows:

the utility model provides a silencer of making an uproar falls in matrix, which comprises an outer shell, be equipped with the damping layer on the shell inner wall, be equipped with first sound absorption orifice plate in the shell, leave the clearance between first sound absorption orifice plate and the damping layer, it is cotton to fill in the clearance, be equipped with the baffle in the shell top surface, it has first fixed plate to distribute on the baffle, it is equipped with the fastener to rotate on the first fixed plate, it has the through-hole to open on the baffle to correspond first fixed plate fastener position, fastener on the first fixed plate passes the baffle through-hole and is connected with the shell top surface, it has the damping layer to distribute on the first fixed plate, the damping layer bottom surface is equipped with the base, the shell bottom surface is equipped with first flange, first flange inner wall distributes there is the second fixed plate, the second fixed plate passes through the fastener with the base of its corresponding damping layer bottom surface that sets up to be connected. The shell bottom surface is equipped with the reducing pipe, and the reducing pipe top is equipped with the second flange, and first flange and second flange pass through the fastener and connect, and reducing pipe bottom surface is equipped with the third flange, and the shell top surface distributes has the landing leg, is equipped with the rain cap on the landing leg, is equipped with the shrouding in the rain cap, and it has the sound absorption cotton to fill between rain cap and the shrouding.

The matrix noise reduction muffler has the following advantages:

1. according to the utility model, through arranging the silencing layers with different thicknesses, noise with different frequencies can be subjected to maximized silencing, so that the silencing effect of the silencer is improved, and the harm of airflow noise to human bodies is reduced.

2. According to the utility model, the top end of the silencing layer is detachably arranged on the top surface of the shell through the first fixing plate, and the bottom surface of the silencing layer is arranged on the second fixing plate through the fastening piece, so that the silencing layer can be conveniently and quickly assembled and disassembled on the shell, and the later maintenance work of the silencing layer is facilitated.

Drawings

FIG. 1 is a schematic diagram of a matrix noise reduction muffler according to the present utility model;

FIG. 2 is a schematic view of the internal structure of the housing of the present utility model;

FIG. 3 is an enlarged schematic view of FIG. 2 at A;

fig. 4 is a schematic view of a partial structure of the sound damping layer of the present utility model.

The figure indicates:

1. a housing; 2. a first sound absorbing orifice plate; 3. sound absorbing cotton; 4. a first flange; 5. a baffle; 6. a sound damping layer; 601. a second sound absorbing orifice plate; 602. a cover plate; 7. a reducer pipe; 8. a second flange; 9. a third flange; 10. a support leg; 11. a rain cap; 12. a sealing plate; 13. a first fixing plate; 14. a second fixing plate; 15. a damping layer; 16. and (5) a base.

Detailed Description

In order that the above-recited objects, features and advantages of the present utility model will be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, without conflict, embodiments of the present utility model and features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced otherwise than as described herein, and therefore the scope of the present utility model is not limited to the specific embodiments disclosed below.

A matrix noise reduction muffler according to some embodiments of the present utility model will be described with reference to fig. 1 to 4.

As shown in fig. 1 to 4, the matrix noise reduction muffler of the present utility model includes a square housing 1, two ends of the housing 1 are disposed through, an air flow outlet is disposed at an upper end of the housing 1, and an air flow inlet is disposed at a lower end of the housing. The damping layer 15 is arranged on the inner wall of the shell 1, the first sound absorption pore plate 2 is arranged in the shell 1, a gap is reserved between the first sound absorption pore plate 2 and the damping layer 15, and sound absorption cotton 3 is filled in the gap for reducing air flow noise.

Specifically, the bottom surface of the casing 1 is provided with a first flange 4, an inner hole of the first flange 4 is smaller than an inner hole of the casing 1, the first sound-absorbing pore plate 2 is rectangular, and redundant parts of the first flange 4 in the casing 1 are used for supporting the first sound-absorbing pore plate 2. The top surface of the shell 1 is provided with a baffle plate 5, the baffle plate 5 is used for limiting and fixing the first sound absorption pore plate 2 arranged in the shell 1, and meanwhile, the sound absorption cotton 3 filled between the first sound absorption pore plate 2 and the inner wall of the damping layer 15 can be prevented from being blocked.

Preferably, the baffle 5 is provided with first fixing plates 13, the bottom surface of the first fixing plates 13 is provided with silencing layers 6, gaps for passing air are reserved among the silencing layers 6, and the silencing layers 6 are distributed on the first fixing plates 13 in a matrix mode, so that noise reduction treatment can be carried out on air flow entering the shell 1 more fully, a base 16, and particularly a flat cone-shaped base 16 with a large upper part and a small lower part, is arranged on the bottom surface of each silencing layer 6, so that the air flow entering the shell 1 can be split, and the silencing layers can better silence air flow noise. The inner wall of the first flange 4 is distributed with a second fixing plate 14, and the second fixing plate 14 is connected with a base on the bottom surface of the silencing layer 6 correspondingly arranged. Specifically, the second fixing plate 14 is connected with the base 16 of the sound damping layer 6 correspondingly arranged by a fastener. And the first fixed plate 13 is rotatably provided with a fastener, the baffle 5 is provided with a through hole corresponding to the fastener of the first fixed plate 13, and the fastener of the first fixed plate 13 passes through the through hole of the baffle 5 and is in threaded connection with the top surface of the shell 1. The first fixing plate 13 and the baffle 5 are detachably arranged.

The top of the noise elimination layer 6 can be detachably arranged on the top surface of the shell 1 through the first fixing plate 13, and the base 16 on the bottom surface of the noise elimination layer 6 is arranged on the second fixing plate 14 through a fastener, so that the noise elimination layer 6 can be conveniently and quickly dismounted on the shell 1 through the fastener, and the later maintenance work of the noise elimination layer 6 is facilitated. When the silencing layer 6 is taken out, the fastening pieces of the base 16 and the second fixing plate 14 on the bottom surface of the silencing layer 6 are firstly taken down, then the fastening piece used for fastening the first fixing plate 13 on the top surface of the shell 1 is taken down, then the first fixing plate 13 is detached from the top surface of the shell 1, and when the first fixing plate 13 is taken down, the silencing layer 6 which is connected to the first fixing plate 13 can be taken out from the shell 1, so that the operation is simple and the use is convenient. At this time, the baffle plate 5 is also detachable from the casing 1, and the sound absorbing cotton 3 in the gap between the inner wall of the casing 1 and the first sound absorbing orifice plate 2 can be inspected or replaced.

The thickness of the noise damping layer 6 is 150 to 300mm. Noise elimination layer 6 of different thickness can make an uproar to the noise of different frequencies, sets up the noise elimination layer 6 of a plurality of different thickness in shell 1 like this and can maximize and make an uproar to the noise of different frequencies and make an uproar, improves the noise elimination effect of making an uproar of the noise elimination of matrix noise reduction, alleviates the injury of noise to the human body. Of course, the shell 1 can be provided with the sound-damping layers 6 with the same thickness, and the sound-damping layers 6 can be filled with composite sound-absorbing cotton with different volume weight thicknesses so as to meet the use requirement.

As shown in fig. 4, the sound-absorbing layer 6 is composed of four second sound-absorbing pore plates 601, sound-absorbing cotton 3 and a cover plate 602, the four second sound-absorbing pore plates 601 are combined and formed into a rectangular shell, the rectangular shell is filled with the sound-absorbing cotton 3, the cover plate 602 is arranged on the top end cover of the rectangular shell, and the side wall of the cover plate 602 is connected with the side wall of the rectangular shell through a fastener. When the sound absorbing cotton 3 in the rectangular shell is replaced, the fastener for fastening the rectangular shell and the cover plate 602 can be detached, and then the cover plate 602 is separated from the rectangular shell, so that the sound absorbing cotton 3 in the rectangular shell can be replaced. In order to facilitate the installation of the muffling layers 6 with different thicknesses on the first fixed plate 13, the cover plate 602 is connected with the first fixed plate 13 through fasteners, and when the cover plate 602 is installed on the first fixed plate 13, the installation holes for installing the fasteners are formed at the corresponding positions of the first fixed plate 13.

The bottom surface of the shell 1 is provided with a reducer pipe 7, the top surface of the reducer pipe 7 is provided with a second flange 8, and the first flange 4 and the second flange 8 are connected through fasteners so as to facilitate the disassembly and assembly of the reducer pipe 7 and the shell 1. A third flange 9 matched with the original pipeline diameter of the discharged air flow is arranged on the bottom surface of the reducer pipe 7. The top surface of the shell 1 is provided with supporting legs 10, the supporting legs 10 are provided with rain caps 11, sealing plates 12 are arranged in the rain caps 11, and sound absorption cotton 3 is filled between the rain caps 11 and the sealing plates 12. The rain cap 11 also dampens the airflow noise and also prevents rain from entering the muffler. Specifically, the connection mode of the shell 1 and the support leg 10 can set the support leg 10 as a screw, screw holes are formed in the top surface of the shell 1 corresponding to the position of the support leg 10, and the connection mode of each support leg 10 and the rain hat 11 is rotary connection, so that the support leg 10 and the rain hat 11 can be conveniently disassembled and assembled on the shell 1, and the installation of the noise elimination layer 6 on the shell 1 is not influenced.

The fastening pieces can be bolts, screws and the like, and the number and the positions of the fastening pieces on the corresponding parts can be selected and installed according to actual use requirements, so that the fastening pieces are not excessively limited.

The installation method comprises the following steps: firstly, the first sound absorption pore plate 2 is installed in the shell 1, then the sound absorption cotton 3 is filled in the first sound absorption pore plate 2 and the inner wall of the shell 1, the top surface of the shell 1 is covered by the baffle plate 5, then the rectangular shell filled with the sound absorption cotton 3 is covered by the cover plate 602, then the sound absorption layers 6 with different thicknesses are distributed on the first fixing plate 13 through fasteners, then the sound absorption layers 6 are inserted into the shell 1, the baffle plate 5 and the top surface of the shell 1 are connected through the first fixing plate 13 provided with the sound absorption layers 6 by the fasteners, and then the base 16 at the bottom surface of each sound absorption layer 6 is connected with the second fixing plate 14. Then, the supporting leg 10 and the rain cap 11 are arranged on the top surface of the shell 1, and the first flange 4 and the second flange 8 are connected on the bottom surface of the shell 1 through fasteners.

In the present utility model, the terms "first," "second," "third," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance: the term "plurality" means two or more, unless explicitly defined otherwise. The terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (6)

1. A matrix noise reduction muffler is characterized in that: the sound absorption device comprises a shell (1), wherein a damping layer (15) is arranged on the inner wall of the shell (1), a first sound absorption pore plate (2) is arranged in the shell (1), a gap is reserved between the first sound absorption pore plate (2) and the damping layer (15), sound absorption cotton (3) is filled in the gap, a baffle (5) is arranged on the top surface of the shell (1), a first fixing plate (13) is distributed on the baffle (5), a fastener is rotationally arranged on the first fixing plate (13), a through hole is formed in the position, corresponding to the first fixing plate (13), on the baffle (5), of the fastener, the fastener on the first fixing plate (13) penetrates through the through hole of the baffle (5) to be connected with the top surface of the shell (1), a sound absorption layer (6) is distributed on the first fixing plate (13), a base (16) is arranged on the bottom surface of the shell (1), a second fixing plate (14) is distributed on the inner wall of the first flange (4), and the second fixing plate (14) is connected with the base (16) on the bottom surface of the sound absorption layer (6) which is correspondingly arranged;

the shell (1) bottom surface is equipped with reducing pipe (7), and reducing pipe (7) top is equipped with second flange (8), and first flange (4) and second flange (8) are connected through the fastener, and reducing pipe (7) bottom surface is equipped with third flange (9), and shell (1) top surface distributes has landing leg (10), is equipped with rain cap (11) on landing leg (10), is equipped with shrouding (12) in rain cap (11), and it has sound absorption cotton (3) to fill between rain cap (11) and shrouding (12).

2. A matrix noise reducing muffler as defined in claim 1, wherein: the sound elimination layer (6) comprises four sides second sound absorption pore plates (601), sound absorption cotton (3) and apron (602), and rectangular shell is formed by four sides second sound absorption pore plates (601) combination, and rectangular shell bottom surface is equipped with base (16), and it has sound absorption cotton (3) to fill in rectangular shell, and rectangular shell's top lid is equipped with apron (602), and apron (602) are connected through the fastener with rectangular shell.

3. A matrix noise reducing muffler as defined in claim 2, wherein: the thickness of the silencing layer (6) is 150-300mm.

4. A matrix noise reducing muffler according to claim 3, wherein: the first fixing plate (13) and the baffle (5) are detachably arranged.

5. A matrix noise reducing muffler according to claim 4, wherein: each cover plate (602) is connected with the corresponding first fixing plate (13) through a fastener.

6. A matrix noise reducing muffler according to claim 5, wherein: composite noise elimination cotton with different volume weight thicknesses can be filled in the noise elimination layer (6).