CN207702017U - A kind of ventilation shaft muffler - Google Patents
A kind of ventilation shaft muffler Download PDFInfo
- Publication number
- CN207702017U CN207702017U CN201820001947.8U CN201820001947U CN207702017U CN 207702017 U CN207702017 U CN 207702017U CN 201820001947 U CN201820001947 U CN 201820001947U CN 207702017 U CN207702017 U CN 207702017U
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- China
- Prior art keywords
- shell
- partition panel
- muffler
- ventilation shaft
- plate layer
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Abstract
The utility model proposes a kind of ventilation shaft mufflers, including：The partition panel of the shell and setting of rectangular box shape inside the shell, along the inner wall of shell, left and right is arranged alternately partition panel from top to bottom；The lower part of shell is equipped with air inlet, and upper part is equipped with air outlet；The end of partition panel is equipped with acoustic(al)absorbent；Shell is made of sheet-metal layers, damping sheet layer, acoustical cotton plate layer and metal perforated plate layer successively from outside to inside.The beneficial effects of the utility model are as follows：By being arranged alternately partition panel in silencer casing so that when air stream is by inside muffler, constantly by compression-expansion, recompression so that the kinetic energy of air stream is converted into thermal energy, plays the role of reducing noise.Simple in structure, message effect is good.By setting silencer casing to multilayer layer structure, when can pass the air stream over muffler, minimize the vibration of shell, to reduce noise transmission, improves the sound-absorbing effect of muffler.
Description
Technical field
The utility model is related to ventilation shaft noise reduction device arts, particularly relate to a kind of ventilation shaft muffler.
Background technology
Muffler prevent sound transmission and allow air-flow by a kind of device, be eliminate air power noise it is important
Measure.Muffler is typically mounted at air powered equipment, such as air blower, air compressor machine, boiler exhaust mouth, generator, water pump are made an uproar
It is a kind of device that can reduce noise on the gas channel of the larger equipment of sound or in inlet and exhaust system.
The shell of existing muffler often only be made of the metal shell of layer, air stream by muffler inside
When, the vibration of silencer casing can be caused, more noises are further generated, erasure effect is poor.In addition, the inside of conventional muffler
Structure setting is unreasonable, and the out-of-date erasure effect of air circulation is bad.
Therefore, there is an urgent need to a kind of mufflers simple in structure, good muffling effect.
Utility model content
The utility model proposes a kind of ventilation shaft muffler, solves the effect of ventilation shaft muffler noise reduction in the prior art
The problem of fruit difference.
What the technical solution of the utility model was realized in：
A kind of ventilation shaft muffler, including：The shell of rectangular box shape and the partition panel being arranged in the shell, institute
Stating partition panel, left and right is arranged alternately from top to bottom along the inner wall of the shell；The lower part of the shell is equipped with air inlet, upper part
Equipped with air outlet；The end of the partition panel is equipped with acoustic(al)absorbent；The shell is from outside to inside successively by sheet-metal layers, damping sheet
Layer, acoustical cotton plate layer and metal perforated plate layer composition.
Preferably, the material of the partition panel, the sheet-metal layers and the metal perforated plate layer is galvanized steel plain sheet.
Preferably, the material of the damping sheet layer is rubber.
Preferably, the material of the acoustic(al)absorbent is acoustical cotton.
Preferably, the inner wall of the partition panel and the shell is welded or is bolted.
Ventilation shaft muffler described in the utility model is mostly installed at centre, pipe end or the pipe of ventilation shaft
On road air inlet.
The beneficial effects of the utility model are：
By being arranged alternately partition panel in silencer casing so that when air stream is by inside muffler, constantly pressed
Contracting expansion, recompression so that the kinetic energy of air stream is converted into thermal energy, plays the role of reducing noise.It is simple in structure, message effect
It is good.
By setting silencer casing to multilayer layer structure, when can pass the air stream over muffler, subtract to greatest extent
The vibration of small shell improves the sound-absorbing effect of muffler to reduce noise transmission.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, other drawings may also be obtained based on these drawings.
Fig. 1 is the structural schematic diagram of ventilation shaft muffler described in the utility model；
Fig. 2 is the cross-sectional view of shell in Fig. 1.
In figure：
1, shell, 2, air inlet, 3, air outlet, 4, partition panel, 5, acoustic(al)absorbent, 6, sheet-metal layers, 7, damping sheet layer, 8, inhale
Sound cotton plate layer, 9, metal perforated plate layer.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
The every other embodiment obtained, shall fall within the protection scope of the present invention.
Embodiment as Figure 1-Figure 2 it is found that a kind of ventilation shaft muffler described in the utility model, including：Square
The shell 1 of shape case shape and the partition panel 4 being arranged in shell 1, along the inner wall of shell 1, left and right replaces partition panel 4 from top to bottom
Setting；The lower part of shell 1 is equipped with air inlet 2, and upper part is equipped with air outlet 3；The end of partition panel 4 is equipped with acoustic(al)absorbent 5；Shell 1
It is made of successively sheet-metal layers 6, damping sheet layer 7, acoustical cotton plate layer 8 and metal perforated plate layer 9 from outside to inside.
The material of above-mentioned partition panel 4, sheet-metal layers 6 and metal perforated plate layer 9 is galvanized steel plain sheet.
The material of above-mentioned damping sheet layer 7 is rubber.
The material of above-mentioned acoustic(al)absorbent 5 is acoustical cotton.
Above-mentioned partition panel 4 and the inner wall of shell 1 are welded or are bolted.
Above-mentioned ventilation shaft muffler is mostly installed on centre, pipe end or the pipeline air inlet of ventilation shaft.
The metal perforated plate layer 9 and acoustical cotton plate layer 8 of above-mentioned shell 1 can play the role of absorbing noise, 7 energy of damping sheet layer
When air stream enough being made to flow through inside muffler, the vibration of shell 1 is reduced to greatest extent, reduces equipment noise itself.
In conclusion the utility model in silencer casing 1 by being arranged alternately partition panel 4 so that air stream is passed through
When inside muffler, constantly by compression-expansion, recompression so that the kinetic energy of air stream is converted into thermal energy, and playing reduces noise
Effect.Simple in structure, message effect is good.
By setting silencer casing 1 to multilayer layer structure, when can pass the air stream over muffler, subtract to greatest extent
The vibration of small shell 1 improves the sound-absorbing effect of muffler to reduce noise transmission.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection domain within.
Claims (5)
1. a kind of ventilation shaft muffler, which is characterized in that including：The shell (1) of rectangular box shape and setting are in the shell
(1) partition panel (4) in, along the inner wall of the shell (1), left and right is arranged alternately the partition panel (4) from top to bottom；It is described outer
The lower part of shell (1) is equipped with air inlet (2), and upper part is equipped with air outlet (3)；The end of the partition panel (4) is equipped with acoustic(al)absorbent
(5)；The shell (1) is from outside to inside successively by sheet-metal layers (6), damping sheet layer (7), acoustical cotton plate layer (8) and metal perforated plate
Layer (9) composition.
2. a kind of ventilation shaft muffler according to claim 1, which is characterized in that the partition panel (4), the metal
The material of plate layer (6) and the metal perforated plate layer (9) is galvanized steel plain sheet.
3. a kind of ventilation shaft muffler according to claim 1, which is characterized in that the material of the damping sheet layer (7)
For rubber.
4. a kind of ventilation shaft muffler according to claim 1, which is characterized in that the material of the acoustic(al)absorbent (5) is
Acoustical cotton.
5. a kind of ventilation shaft muffler according to claim 1, which is characterized in that the partition panel (4) with it is described outer
The inner wall of shell (1) is welded or is bolted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820001947.8U CN207702017U (en) | 2018-01-02 | 2018-01-02 | A kind of ventilation shaft muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820001947.8U CN207702017U (en) | 2018-01-02 | 2018-01-02 | A kind of ventilation shaft muffler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207702017U true CN207702017U (en) | 2018-08-07 |
Family
ID=63030999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820001947.8U Active CN207702017U (en) | 2018-01-02 | 2018-01-02 | A kind of ventilation shaft muffler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207702017U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112833033A (en) * | 2021-01-06 | 2021-05-25 | 苏州保邦电气有限公司 | Silencer of air blower |
-
2018
- 2018-01-02 CN CN201820001947.8U patent/CN207702017U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112833033A (en) * | 2021-01-06 | 2021-05-25 | 苏州保邦电气有限公司 | Silencer of air blower |
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| GR01 | Patent grant |