CN102287404A - Sound absorption structure of soundproof shield - Google Patents
Sound absorption structure of soundproof shield Download PDFInfo
- Publication number
- CN102287404A CN102287404A CN2011102837021A CN201110283702A CN102287404A CN 102287404 A CN102287404 A CN 102287404A CN 2011102837021 A CN2011102837021 A CN 2011102837021A CN 201110283702 A CN201110283702 A CN 201110283702A CN 102287404 A CN102287404 A CN 102287404A
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- sound
- sound absorption
- perforated plate
- absorption structure
- insulating cover
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- Soundproofing, Sound Blocking, And Sound Damping (AREA)
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Abstract
The invention relates to a sound absorption structure of a soundproof shield. The sound absorption structure comprises an outer shell zinc-plated board, an inner wall perforated plate, glass fiber cloth and a sound absorption material. The sound absorption material is arranged between the outer shell zinc-plated board and the inner wall perforated plate, and a layer of glass fiber cloth covers the sound absorption material. The distance between the outer shell zinc-plated board and the inner wall perforated plate is larger than or equal to 50mm. A plurality of through holes are arranged on the inner perforated plate, and the perforation rate of the inner perforated plate is larger than or equal to 20%. The invention has the advantages of compact and reasonable structure, capability of effectively reducing the reverberation in the soundproof shield and improvement of sound absorption frequency band of the perforated plate; the layer of glass fiber cloth covers the surface of the sound absorption material so as to avoid the exhaust of fines or fibers through the perforated plate; and the sound absorption structure of the soundproof shield, disclosed by the invention, can improve the sound absorption coefficient of the inner wall, can increase the noise-reducing capability, and has the characteristics of good soundproof and sound-absorbing effects and the like.
Description
Technical field
The present invention relates to the sound absorption structure of high-speed centrifugal fan sound-insulating cover, specifically a kind of follow-on structure of sound-insulating cover belongs to the mechanical structure technical field.
Background technique
In existing technology, can produce bigger noise during the high-speed centrifugal fan operation, environment is polluted, and general blower fan sound-insulating cover inwall does not adopt sound absorption structure, the inwall acoustic absorptivity is little, and noise reduction is poor.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, thereby a kind of improvement structure of sound-insulating cover is provided, its sqouynd absorption lowering noise effect is obvious, and compact structure is reasonable.
According to technological scheme provided by the invention, the sound-insulating cover sound absorption structure comprises shell galvanized sheet, inwall perforated plate, glass fiber cloth, sound-absorbing material composition, be provided with sound-absorbing material between described shell galvanized sheet and the inwall perforated plate, layer of glass cloth is covered on the sound-absorbing material surface.
As a further improvement on the present invention, the distance between described shell galvanized sheet and the inwall perforated plate is not less than 50mm.
As a further improvement on the present invention, described inwall perforated plate is provided with some perforation, and described punching rate is not less than 20%.
As a further improvement on the present invention, described sound-absorbing material adopts different materials under different situations, as super glass wool or mineral wool etc.
Compared with the prior art the present invention has the following advantages:
Compact structure of the present invention, reasonable; Can effectively reduce the reverberation in the sound-insulating cover, improve the sound sucting band of perforated plate; Layer of glass cloth is covered on the sound-absorbing material surface, in order to avoid fines or fiber are by shedding in the perforated plate; Can improve the acoustic absorptivity of inwall, improve noise reduction capability; And have characteristics such as sound insulation, acoustically effective is good.
Description of drawings
Fig. 1 is the structural representation of sound-insulating cover.
Fig. 2 is the A place enlarged view of Fig. 1.
Embodiment
Embodiment during following the present invention incites somebody to action in conjunction with the accompanying drawings is further described:
As Fig. 1～shown in Figure 2: comprise parts such as shell galvanized sheet 1, inwall perforated plate 2, sound-absorbing material 3, glass fiber cloth 4, air intake venetian blind 5, radiation fan 6.
Described sound-insulating cover comprises sound-insulating cover body 7, air intake venetian blind 5, radiation fan 6 etc., and described sound-insulating cover body 7 is provided with parts such as air intake venetian blind 5, radiation fan 6, and sound-insulating cover body 7 inwalls are provided with the sound-insulating cover sound absorption structure.
Sound-insulating cover sound absorption structure of the present invention comprises component such as shell galvanized sheet 1, inwall perforated plate 2, sound-absorbing material 3, glass fiber cloth 4.
Described inwall perforated plate 2 is provided with some perforation, and described punching rate is not less than 20%.Inwall perforated plate 2 promptly constitutes perforation board resonance sound absorption structure and improves sound absorbing capabilities.Be provided with sound-absorbing material 3 between shell galvanized sheet 1 and the inwall perforated plate 2, described sound-absorbing material 3(adopts different materials under different situations, as super glass wool or mineral wool etc.) can effectively reduce the reverberation in the sound-insulating cover, improve the sound sucting band of perforated plate.Distance X between shell galvanized sheet 1 and the inwall perforated plate 2 is not less than 50mm.Layer of glass cloth 4 is covered on the sound-absorbing material surface, in order to avoid fines or fiber are by shedding in the perforated plate.This sound-insulating cover is owing to having improved the acoustic absorptivity of inwall, so improved its noise reduction capability.
Claims (4)
1. sound-insulating cover sound absorption structure, it is characterized in that: comprise shell galvanized sheet (1), inwall perforated plate (2), sound-absorbing material (3), glass fiber cloth (4), be provided with sound-absorbing material (3) between described shell galvanized sheet (1) and the inwall perforated plate (2), layer of glass cloth (4) is covered on sound-absorbing material (3) surface.
2. sound-insulating cover sound absorption structure as claimed in claim 1 is characterized in that: the distance between described shell galvanized sheet (1) and the inwall perforated plate (2) is not less than 50mm.
3. sound-insulating cover sound absorption structure as claimed in claim 1 is characterized in that: described inwall perforated plate (2) is provided with some perforation, and described punching rate is not less than 20%.
4. sound-insulating cover sound absorption structure as claimed in claim 1 is characterized in that: described sound-absorbing material (3) adopts super glass wool or mineral wool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102837021A CN102287404A (en) | 2011-09-22 | 2011-09-22 | Sound absorption structure of soundproof shield |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102837021A CN102287404A (en) | 2011-09-22 | 2011-09-22 | Sound absorption structure of soundproof shield |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102287404A true CN102287404A (en) | 2011-12-21 |
Family
ID=45334081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102837021A Pending CN102287404A (en) | 2011-09-22 | 2011-09-22 | Sound absorption structure of soundproof shield |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102287404A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107648970A (en) * | 2017-10-16 | 2018-02-02 | 安徽工程大学 | A kind of spinning and weaving workshop low-noise air dust removal by filtration device |
| CN111075551A (en) * | 2018-10-22 | 2020-04-28 | 郑州宇通客车股份有限公司 | A cooling fan that is used for noise reduction to protect fan housing and adopts this to protect fan housing |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2625624Y (en) * | 2003-07-07 | 2004-07-14 | 长沙贝尔环保节能设备有限公司 | Square low noise axial fan |
| CN201448141U (en) * | 2009-06-26 | 2010-05-05 | 常州市风机制造有限公司 | Acoustic hood |
| CN201778881U (en) * | 2009-11-24 | 2011-03-30 | 世纪良基(北京)科技发展有限公司 | Formaldehyde-free environment-friendly pipe type silencer |
| CN102011500A (en) * | 2010-12-20 | 2011-04-13 | 无锡杰尔压缩机有限公司 | Wall surface sound absorption structure of high-speed centrifugal fan testing room |
-
2011
- 2011-09-22 CN CN2011102837021A patent/CN102287404A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2625624Y (en) * | 2003-07-07 | 2004-07-14 | 长沙贝尔环保节能设备有限公司 | Square low noise axial fan |
| CN201448141U (en) * | 2009-06-26 | 2010-05-05 | 常州市风机制造有限公司 | Acoustic hood |
| CN201778881U (en) * | 2009-11-24 | 2011-03-30 | 世纪良基(北京)科技发展有限公司 | Formaldehyde-free environment-friendly pipe type silencer |
| CN102011500A (en) * | 2010-12-20 | 2011-04-13 | 无锡杰尔压缩机有限公司 | Wall surface sound absorption structure of high-speed centrifugal fan testing room |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107648970A (en) * | 2017-10-16 | 2018-02-02 | 安徽工程大学 | A kind of spinning and weaving workshop low-noise air dust removal by filtration device |
| CN111075551A (en) * | 2018-10-22 | 2020-04-28 | 郑州宇通客车股份有限公司 | A cooling fan that is used for noise reduction to protect fan housing and adopts this to protect fan housing |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20111221 |