CN202509644U - Sound absorption cellular board - Google Patents
Sound absorption cellular board Download PDFInfo
- Publication number
- CN202509644U CN202509644U CN2012200258950U CN201220025895U CN202509644U CN 202509644 U CN202509644 U CN 202509644U CN 2012200258950 U CN2012200258950 U CN 2012200258950U CN 201220025895 U CN201220025895 U CN 201220025895U CN 202509644 U CN202509644 U CN 202509644U
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- China
- Prior art keywords
- cellular board
- sound absorption
- box
- noise
- sound
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- Expired - Lifetime
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Abstract
A sound absorption cellular board is characterized by comprising a box (1) formed by a double-face punched aluminum cellular board (5), sound absorption paper (4), polyester fiber sound absorption cotton (3), a face plate and a lateral side back plate, wherein one face of the box (1) is open. After the box is filled with the sound absorption cotton (3) and the sound absorption paper (4), the cellular board (5) is fixed on the open face of the box (1), and a hanging piece (2) is arranged on the lateral side back plate of the box (1). The sound absorption cellular board has a good noise lowering effect on roll joint package plants, completely meets requirements of 'industrial enterprise noise hygienic standard' (GBZ1-2002) 5.2.3.5 that operators in workplaces continuously contact noise for 8 hours every day, and the noise level hygienic limited value is 85 dB (A). The sound absorption cellular board can also be used in environments having high noise reduction requirements.
Description
Technical field
The utility model belongs to the damping material of factory noise reduction, is a kind of sound-absorbing cellular board specifically.
Background technology
Existing abatvoix is made up of honeycomb aluminium sheet and acoustical absorption heat preserving layer, and noise reduction effect is not had specific aim, and it is relatively poor to be used for factory noise reduction result of use.Noise of equipment sound pressure level dB (A) is between 85-93 between the cigarette of cigarette factory hired car at present, and this noise has had a strong impact on staff's in the workshop normal operation circumstances; Main source is following: 1, the mechanical friction of cigarette equipment, bump, periodicity active force noise, and the construct noise of mechanical oscillatory structure radiation, the spray of air force property, periodicity excite noise; 2, air force property jet noise in the material conveying pipe; 3, air force property jet noise in the pneumatic conveyer road; Cigarette equipment noise mainly concentrates on medium-high frequency, and peak value is at 500Hz-4000Hz, and is on a declining curve with sound pressure level then; The packing machine noise mainly concentrates on Mid Frequency, presents the trend of extending to low high frequency, extends to 250Hz to low-frequency range, extends to 4000Hz to high band.
Summary of the invention
The purpose of the utility model is to the noise behavior between the cigarette hired car a kind of sound-absorbing cellular board to be provided, and realizes reducing targetedly noise.
The utility model is realized like this: a kind of sound-absorbing cellular board; It is characterized in that forming by the opening box that double-sided perforated aluminium matter cellular board, sound absorbing paper, polyester fiber acoustical cotton, panel and side backboard constitute; Be fixed on the box opening surface with cellular board after filling installation acoustical cotton and sound absorbing paper in the box, on the side backboard of box suspension member be installed.
To carrying out noise reduction between the cigarette hired car noise reduction effect is preferably arranged with the described sound-absorbing cellular board of the utility model; Reached " industrial enterprise's noise sanitary standard " (GBZ1-2002) 5.2.3.5 regulation fully: industrial site operating personnel Continuous Contact every day noise 8 hours, noise sound level health limit value is the requirement of 85dB (A).The utility model also can use at the environment that higher noise reduction requirement is arranged.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the member decomposing schematic representation of the utility model.
Combine accompanying drawing 1-2 that the utility model is described further at present:
A kind of sound-absorbing cellular board; The box 1 that is made up of an opening double-sided perforated aluminium matter cellular board 5, high-quality sound absorbing paper 4, polyester fiber acoustical cotton 3, not perforated aluminium alloy panel and aluminum alloy back plate is formed; Cellular board 5 adopts the surface to be shaped on the punching aluminium sheet that pitch-row is 0.7mm; Aperture 2.5mm, percent opening are 23%.
The structure of the utility model is to utilize the back and forth friction sound energy consumption of air in the aluminium sheet aperture, with the chamber behind the hole control deeply the sound absorption peak value resonance frequency, resonance frequency is relevant with aperture and cavity volume; Have nothing to do with the shape in aperture and chamber, be applicable to the low-frequency noise occasion of obvious tone, after inserting sound absorption material in the cavity of perforated plate structure; Because the acoustic impedance of cavity and the variation of terminal correction value; Generally, add sound absorption material in the resonant cavity after, the sound absorption frequency move to low frequency; Behind the plate of punching cellular board, in the cavity, fill the gradient acoustical cotton, constitute a compound sound-absorption structural, sound absorption material has increased near the windage the aperture, causes resistance to strengthen, and has widened sound sucting band, has improved the sound absorption coefficient of tectosome.Simultaneously, in order to make sound sucting band broadening, the cellular board of selecting for use has adopted different punching rates, has further improved the sound absorbing capabilities of tectosome.
Claims (3)
1. sound-absorbing cellular board; It is characterized in that forming by the opening box (1) that double-sided perforated aluminium matter cellular board (5), sound absorbing paper (4), polyester fiber acoustical cotton (3), panel and side backboard constitute; Be fixed on box (1) opening surface with cellular board (5) after filling installation acoustical cotton (3) and sound absorbing paper (4) in the box, suspension member (2) is installed on the side backboard of box (1).
2. sound-absorbing cellular board as claimed in claim 1 is characterized in that the thick 12mm of described cellular board (5).
3. sound-absorbing cellular board as claimed in claim 1 is characterized in that the thick 120mm of described acoustical cotton (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200258950U CN202509644U (en) | 2012-01-19 | 2012-01-19 | Sound absorption cellular board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200258950U CN202509644U (en) | 2012-01-19 | 2012-01-19 | Sound absorption cellular board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202509644U true CN202509644U (en) | 2012-10-31 |
Family
ID=47062136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200258950U Expired - Lifetime CN202509644U (en) | 2012-01-19 | 2012-01-19 | Sound absorption cellular board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202509644U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105332436A (en) * | 2015-11-19 | 2016-02-17 | 嘉善鸿源蜂窝制品有限公司 | Aluminum honeycomb sound absorption plate |
-
2012
- 2012-01-19 CN CN2012200258950U patent/CN202509644U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105332436A (en) * | 2015-11-19 | 2016-02-17 | 嘉善鸿源蜂窝制品有限公司 | Aluminum honeycomb sound absorption plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121031 |
|
| CX01 | Expiry of patent term |