CN212113212U

CN212113212U - Metal shell sheet type silencer

Info

Publication number: CN212113212U
Application number: CN202020590070.8U
Authority: CN
Inventors: 许伟清; 赵涛
Original assignee: Wuxi Taiheng Environmental Protection Technology Co ltd
Current assignee: Wuxi Taiheng Environmental Protection Technology Co ltd
Priority date: 2020-04-20
Filing date: 2020-04-20
Publication date: 2020-12-08
Anticipated expiration: 2030-04-20

Abstract

The utility model belongs to the technical field of the silencer, especially, metal casing piece formula silencer, including the noise elimination shell, fixedly connected with bracing piece on the outer wall of noise elimination shell, the one end fixedly connected with protecting sheathing of noise elimination shell is kept away from to the bracing piece, protecting sheathing's top fixedly connected with air inlet, the top of air inlet is equipped with the block and is, fixedly connected with inscription fixed block on the inner wall of noise elimination shell, the surface of inscription fixed block is seted up flutedly, be equipped with the plugboard in the recess of inscription fixed block, the fixed surface of plugboard is connected with the hush pipe, fixedly connected with soundproof cotton on the inner wall of hush pipe, the inside. The utility model discloses a set up the inscription fixed block, thereby can slide in the inscription fixed block and take out through the pulling plugboard when needs take out the plugboard, insert the plugboard when needs install the plugboard and reached the effect of quick installation in advancing the inscription fixed block.

Description

Metal shell sheet type silencer

Technical Field

The utility model relates to a silencer technical field specifically is metal casing piece formula silencer.

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 resistive muffler, there are also impedance composite mufflers, and many types of mufflers exist, but the mufflers can be divided into six main types, namely resistive muffler, impedance composite muffler, micro-perforated plate muffler, small hole muffler and active muffler, because the mufflers are based on the muffling mechanism.

There are the following problems:

1. the existing sheet-type silencer with a metal shell cannot conveniently and quickly take out the silencing sheet when in use.

2. The existing sheet-type silencer with a metal shell has poor sound insulation effect when in use.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a metal casing piece formula silencer has solved the problem of dismantling the difficulty.

In order to achieve the above object, the utility model provides a following technical scheme: the metal shell sheet type silencer comprises a silencing shell, wherein a supporting rod is fixedly connected to the outer wall of the silencing shell, a protective shell is fixedly connected to one end, away from the silencing shell, of the supporting rod, an air inlet is fixedly connected to the top end of the protective shell, a cover cap is arranged on the top end of the air inlet, an inner connecting fixing block is fixedly connected to the inner wall of the silencing shell, a groove is formed in the surface of the inner connecting fixing block, an insertion plate is arranged in the groove of the inner connecting fixing block, a silencing pipe is fixedly connected to the surface of the insertion plate, soundproof cotton is fixedly connected to the inner wall of the silencing pipe, and sound absorption ball cotton is arranged inside the silencing pipe.

As a preferred technical scheme of the utility model, the shape of bracing piece is the long strip of cylinder, and the quantity of bracing piece is four groups, four group's bracing pieces are moment distribution.

As a preferred technical scheme of the utility model, the cross sectional shape of inscription fixed block is "concave" style of calligraphy, and inscription fixed block and plugboard looks adaptation, the plugboard is the clearance fit relation with the inscription fixed block.

As an optimized technical scheme of the utility model, the shape of cross section of hush pipe is the ring form, and the surface of hush pipe is smooth curved surface.

As an optimal technical scheme of the utility model, soundproof cotton and the cotton quantity of sound absorption ball are a plurality of groups, and the amortization pipe of a plurality of groups and soundproof cotton are cyclic annular equidistance with the centre of a circle of amortization pipe and distribute.

As a preferred technical scheme of the utility model, the quantity of inscription fixed block and plugboard is a plurality of groups, a plurality of groups inscription fixed block and plugboard are sharp equidistance and distribute.

As a preferred technical scheme of the utility model, block and air inlet are the interference fit relation, and are equipped with screw thread and air inlet looks adaptation on the inner wall of block.

Compared with the prior art, the utility model provides a metal casing piece formula silencer possesses following beneficial effect:

1. this metal casing piece formula silencer through setting up the inscription fixed block, thereby can slide in the inscription fixed block and take out through pulling the plugboard when needs take out the plugboard, inserts the plugboard when needs install the plugboard and has reached the effect of quick installation in advancing the inscription fixed block.

2. This metal casing piece formula silencer through setting up sound absorption ball cotton and protecting sheathing, when the sound wave enters into the noise elimination shell, through the hush pipe on picture peg surface, the sound wave enters into hush pipe, absorbs the sound wave under the cotton effect of sound absorption ball at soundproof cotton, contacts the inner wall of hush shell when the sound wave, thereby has reached isolated effect through the propagation of the vacuum effect separation sound wave in the protecting sheathing.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

fig. 3 is a plan view of the silencer duct.

In the figure: 1. a sound-deadening housing; 2. a support bar; 3. a protective housing; 4. an air inlet; 5. capping; 6. internally connecting a fixed block; 7. a plugboard; 8. a sound-deadening tube; 9. sound insulation cotton; 10. the sound absorption ball is cotton.

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. 1-3, in this embodiment: sheet metal casing formula silencer, including noise elimination shell 1, fixedly connected with bracing piece 2 on the outer wall of noise elimination shell 1, the one end fixedly connected with protecting sheathing 3 of noise elimination shell 1 is kept away from to bracing piece 2, protecting sheathing 3's top fixedly connected with air inlet 4, the top of air inlet 4 is equipped with block 5 and is, fixedly connected with inscription fixed block 6 on noise elimination shell 1's the inner wall, the surface of inscription fixed block 6 is seted up flutedly, be equipped with plugboard 7 in the recess of inscription fixed block 6, the fixed surface of plugboard 7 is connected with amortization pipe 8, fixedly connected with soundproof cotton 9 on the inner wall of amortization pipe 8, the inside of amortization pipe 8 is equipped.

In this embodiment, the support rods 2 are cylindrical and long, the number of the support rods 2 is four, the four support rods 2 are distributed in a zigzag shape, the cross section of the internally-connected fixing block 6 is concave, the internally-connected fixing block 6 is matched with the plugboard 7, the plugboard 7 is in clearance fit with the internally-connected fixing block 6, the cross section of the silencing tube 8 is circular, the surface of the silencing tube 8 is a smooth curved surface, the quantity of the soundproof cotton 9 and the silencing ball cotton 10 is a plurality of groups, the groups of the silencing tube 8 and the soundproof cotton 9 are distributed in an annular equidistant manner around the center of the silencing tube 8, the quantity of the internally-connected fixing block 6 and the plugboard 7 is a plurality of groups, the groups of the internally-connected fixing block 6 and the plugboard 7 are distributed in a linear equidistant manner, the cap 5 and the air inlet 4 are in an interference fit, threads are arranged on the inner wall of the cap 5 and are matched with the air inlet 4, and when the plugboard 7 needs to be taken out, the plugboard And when the inserting plate 7 needs to be installed, the inserting plate 7 is inserted into the internal connection fixing block 6, so that the effect of quick installation is achieved.

The utility model discloses a theory of operation and use flow: the utility model discloses in, at first when the sound wave enters into noise elimination shell 1, through the hush pipe 8 on plugboard 7 surfaces, the sound wave enters into hush pipe 8, absorbs the sound wave under soundproof cotton 9 and the effect of inhaling sound ball cotton 10, thereby contacted noise elimination shell 1's inner wall when the sound wave, thereby reached isolated effect through the propagation of the vacuum effect separation sound wave in the protecting sheathing 3.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Metal casing piece formula silencer, including noise elimination shell (1), its characterized in that: fixedly connected with bracing piece (2) on the outer wall of noise elimination shell (1), the one end fixedly connected with protecting sheathing (3) of noise elimination shell (1) is kept away from in bracing piece (2), top fixedly connected with air inlet (4) of protecting sheathing (3), it is that the top of air inlet (4) is equipped with block (5), fixedly connected with inscription fixed block (6) on the inner wall of noise elimination shell (1), the surface of inscription fixed block (6) is seted up flutedly, be equipped with plugboard (7) in the recess of inscription fixed block (6), the fixed surface of plugboard (7) is connected with noise damping pipe (8), fixedly connected with soundproof cotton (9) on the inner wall of noise damping pipe (8), the inside of noise damping pipe (8) is equipped with sound absorption ball cotton (10).

2. The metal shell, sheet muffler of claim 1, wherein: the supporting rods (2) are cylindrical and long-strip-shaped, the number of the supporting rods (2) is four, and the four groups of supporting rods (2) are distributed in a moment shape.

3. The metal shell, sheet muffler of claim 1, wherein: the cross section of the internal connection fixing block (6) is concave, the internal connection fixing block (6) is matched with the plug board (7), and the plug board (7) and the internal connection fixing block (6) are in clearance fit.

4. The metal shell, sheet muffler of claim 1, wherein: the cross section of the silencing pipe (8) is circular, and the surface of the silencing pipe (8) is a smooth curved surface.

5. The metal shell, sheet muffler of claim 1, wherein: the quantity of soundproof cotton (9) and inhaling sound ball cotton (10) is a plurality of groups, and the circle center that a plurality of groups hush pipe (8) and soundproof cotton (9) used hush pipe (8) is cyclic annular equidistance and distributes.

6. The metal shell, sheet muffler of claim 1, wherein: the number of the internal connection fixing blocks (6) and the number of the plug boards (7) are a plurality of groups, and the groups of the internal connection fixing blocks (6) and the plug boards (7) are linearly distributed at equal intervals.

7. The metal shell, sheet muffler of claim 1, wherein: the cap (5) and the air inlet (4) are in interference fit, and the inner wall of the cap (5) is provided with threads matched with the air inlet (4).