CN215164844U - Metal foam aluminum composite sound absorption board - Google Patents
Metal foam aluminum composite sound absorption board Download PDFInfo
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- CN215164844U CN215164844U CN202120108315.3U CN202120108315U CN215164844U CN 215164844 U CN215164844 U CN 215164844U CN 202120108315 U CN202120108315 U CN 202120108315U CN 215164844 U CN215164844 U CN 215164844U
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Abstract
The utility model discloses a metal foam aluminium composite sound absorption board, including sound absorption structure and sound insulation structure, inhale the inside fossil fragments that is provided with of sound insulation structure, and be provided with the sound absorption structure on the fossil fragments, the sound absorption structure includes foamed aluminum plate and inhales sound paper, it is located foamed aluminum plate's one side to inhale sound paper, the sound insulation structure is including perforation panel and backplate, the both sides of fossil fragments are connected with perforation panel and backplate respectively. This metal foam aluminium composite acoustic baffle has solved the tradition and has used the sound barrier cell board of glass cotton, rock wool material to environmental pollution and long-term use the problem that glass cotton, rock wool material caused the function inefficacy because of structural deformation, has solved the majority and has used foamed aluminum plate as the not enough problem of sound barrier sound absorbent sound absorption capacity, has alleviateed the whole quality of sound barrier cell board simultaneously, has improved the convenience of construction, has improved the security of using.
Description
Technical Field
The utility model belongs to the technical field of the acoustic baffle, specifically be a metal foam aluminium composite acoustic baffle.
Background
In recent years, along with the deepening of the construction of the country for the beautiful life of people, the increasing of the supervision of environmental problems and the increasing of the environmental awareness of residents, various environmental problems are more and more emphasized originally. For urban residents, traffic noise is a main influence factor, and the most adopted method for solving the problem of traffic noise is to set sound barriers at two sides of a road at present, so that the influence of the traffic noise on the lives of the residents can be effectively reduced. The sound barrier is a barrier which is arranged between a noise source and a receiving point and used for blocking noise transmission, and the sound barrier is divided into a pure sound insulation type sound barrier and a sound absorption and insulation composite type sound barrier according to the action type of the sound barrier. As for the noise reduction effect, the sound absorption and insulation composite type sound barrier has better sound absorption capacity, can effectively reduce sound transmission sound energy and reflected sound energy, not only reduces primary transmission sound energy, but also reduces the problem of noise reduction effect reduction caused by multiple reflected sound, and has better protection effect on sensitive points than a pure sound insulation type sound barrier. Glass wool or rock wool is mostly used as the sound absorption material in the traditional metal sound barrier. The method not only causes environmental pollution, but also is difficult to recycle, and especially, the centrifugal glass wool can not be recycled after being used and scrapped. With the increase of the national environmental protection supervision, manufacturers for producing glass wool can have the phenomenon of periodic production stop and certain price fluctuation, and the factors are not favorable for the production of company products. In addition, centrifugal glass wool and rock wool can produce certain pollution to the surrounding environment when being applied to the sound barrier, especially use when high-speed railway, can appear moreover, after using for a period of time, the ageing problem of glass wool and rock wool is serious, and the phenomenon of collapsing appears in the inside, leads to the problem that sound absorption performance reduces or became invalid.
SUMMERY OF THE UTILITY MODEL
The above-mentioned problem to prior art exists, the utility model aims to solve the technical problem that a metal foam aluminium composite acoustic baffle is provided to solve the cotton acoustic baffle polluted environment of present glass, the not good problem of sound absorption performance.
In order to solve the technical problem, the utility model discloses a technical scheme be:
the utility model provides a metal foam aluminium composite sound absorption board, includes sound absorption structure and sound insulation structure, inhale the inside fossil fragments that is provided with of sound insulation structure, and be provided with sound absorption structure on the fossil fragments, sound absorption structure includes foamed aluminum plate and inhales sound paper, inhale one side that sound paper is located foamed aluminum plate, sound insulation structure is including perforation panel and backplate, the both sides of fossil fragments are connected with perforation panel and backplate respectively.
Further, be provided with the decoupling zero device on the fossil fragments, and fossil fragments are connected with foamed aluminum plate and inhale the sound paper through decoupling zero device and connecting piece.
Further, the sound-absorbing paper is fireproof sound-absorbing paper, and the thickness of the sound-absorbing paper is 0.5mm to 1.2 mm.
Further, the sound absorption structure can be an aluminum foam plate or an open-cell aluminum foam plate or a semi-open-cell aluminum foam plate or a closed-cell aluminum foam plate, and the thickness of the sound absorption structure is 3-50 mm.
Furthermore, the porosity of the microporous foamed aluminum plate is more than or equal to 35%, and the number of pores per square centimeter is not less than 100.
Furthermore, the porosity of the semi-open-pore foamed aluminum plate is more than or equal to 15%, and the number of pores per square centimeter is not less than 40.
Furthermore, the closed-cell foamed aluminum plate has a porosity of 80% or more and an average pore diameter of 6mm or more.
Furthermore, the perforated panel and the back plate are both galvanized steel plates or aluminum alloy plates.
Furthermore, the perforated panel, the back plate and the keel are fixedly connected.
Has the advantages that: compared with the prior art, the method has the following advantages:
this metal foam aluminium composite acoustic baffle has solved the tradition and has used the sound barrier cell board of glass cotton, rock wool material to environmental pollution and long-term use the problem that glass cotton, rock wool material caused the function inefficacy because of structural deformation, has solved the majority and has used foamed aluminum plate as the not enough problem of sound barrier sound absorbent sound absorption capacity, has alleviateed the whole quality of sound barrier cell board simultaneously, has improved the convenience of construction, has improved the security of using.
Drawings
FIG. 1 is a schematic structural view of a metal foam aluminum composite sound absorbing panel;
FIG. 2 is a top view of the aluminum foam composite panel;
fig. 3 is an enlarged view of a portion of the structure of fig. 2.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1, 2 and 3, the metal foamed aluminum composite sound absorption plate of the present application comprises a sound absorption structure and a sound insulation structure, a keel 6 is arranged inside the sound absorption and insulation structure, the sound absorption structure is arranged on the keel 6, the sound absorption structure comprises a foamed aluminum plate 1 and sound absorption paper 2, the foamed aluminum is formed by combining one or more of closed-cell foamed aluminum, semi-open-cell foamed aluminum or through-hole foamed aluminum, the sound absorption paper is positioned on one side of the foamed aluminum plate 1 and is flatly paved on the surface of the foamed aluminum plate 1, corners of the foamed aluminum plate 1 are wrapped inside, four corners are fixed by an adhesive, the whole sound absorption structure can have noise reduction capability of wider frequency band, the problem that the noise reduction capability is insufficient within the range of simply using the foamed aluminum plate as a broadband sound absorption material is solved, the sound absorption structure comprises a perforated panel 3 and a back panel 4, two sides of the keel 6 are respectively connected with the perforated panel 3 and the back panel 4, the perforated panel 3 is a perforated structure, the back plate 4 is a common metal plate, and the perforated panel 3 and the back plate 4 are made of the same material and have the same thickness; the back plate 4 of the sound insulation structure is provided with the middle keel 6 for fixing the sound absorption structure, so that a fixed distance is kept between the sound absorption structure and the back plate 4 to form a cavity, and the integral noise reduction capability of the sound absorption structure can be further improved.
Be provided with decoupling zero device 7 on fossil fragments 6, decoupling zero device 7 is prior art, and fossil fragments 6 through decoupling zero device 7 and connecting piece 5 with foam aluminum plate 1 with inhale sound paper 2 and be connected, make foam aluminum plate 1 with inhale sound paper 2 and tightly fix on fossil fragments 6, also can not appear not hard up phenomenon after long-time the use, improve life.
Inhale sound paper 2 for preventing fires and inhale sound paper, and inhale the thickness of sound paper 2 and be 0.5mm to 1.2mm, use the fire prevention in the sound absorbing structure and inhale the sound paper color and be black, fire rating B2 is more than level, and no formaldehyde releases, and the coefficient of noise reduction is 0.3 ~ 0.75.
The sound absorption structure can be a foamed aluminum plate or an open-cell foamed aluminum plate or a semi-open-cell foamed aluminum plate or a closed-cell foamed aluminum plate, the thickness of the sound absorption structure is 3-50mm, the porosity of materials used in the sound absorption structure is 15% -65%, the porosity of microporous foamed aluminum used in the sound absorption structure is more than or equal to 35%, the number of holes per square centimeter is not less than 100, the porosity of semi-open-cell foamed aluminum used in the sound absorption structure is more than or equal to 15%, the number of holes per square centimeter is not less than 40, the porosity of closed-cell foamed aluminum used in the sound absorption structure is more than or equal to 80%, and the average pore diameter is more than or equal to 6 mm.
The perforated panel 3 and the back plate 4 are both galvanized steel plates or aluminum alloy plates with the thickness of 1.2mm to 2.0mm, and the surfaces are subjected to plastic spraying treatment.
6. The metal foam aluminum composite acoustical panel of claim 1, wherein: perforated panel 3 and backplate 4 are fixed connection with fossil fragments 6, and the board is connected as an organic whole through fossil fragments with the backplate, improves stability greatly.
Example 1:
a metal foam aluminum composite sound absorption plate is a sound absorption structure microporous foam aluminum plate 1 and sound absorption paper 2. 1 thickness of micropore foam aluminum plate is 5mm, inhales 2 thickness of sound paper and is 1.2mm, inhales sound paper 2 and paves in 1 surface of micropore foam aluminum plate, is fixed in on backplate 4 through metal fossil fragments 6 and decoupling zero piece 7. The sound insulation mechanism is a perforated panel 3 and a back plate 4. The sound absorbing structure forms a cavity with a depth of 100mm with the back plate 4 through the metal keel 6 and forms a cavity with a depth of 30mm with the perforated panel 3. The perforated panel 3 and the back plate 4 provided with the sound absorption unit are assembled into a metal foam aluminum composite sound absorption structure in a buckling mode. After installation, the noise reduction coefficient is 0.50 to 0.75, and the weighted sound insulation quantity is 25dB to 30dB
The utility model provides a thinking and implementation method of metal foam aluminium composite sound-absorbing board, the concrete application way is many, only above the utility model discloses an optimal implementation mode should point out, to this technical field's ordinary technical personnel, not deviating from the utility model discloses under the prerequisite of principle, can also make a plurality of improvements, these improvements should also be regarded as the utility model discloses a protection scope.
Claims (9)
1. The utility model provides a metal foam aluminium composite acoustic baffle which characterized in that: including sound absorption structure and sound insulation structure, inhale sound insulation structure inside and be provided with fossil fragments (6), and be provided with sound absorption structure on fossil fragments (6), sound absorption structure includes foamed aluminum plate (1) and inhales sound paper (2), inhale one side that sound paper is located foamed aluminum plate (1), sound insulation structure includes perforation panel (3) and backplate (4), the both sides of fossil fragments (6) are connected with perforation panel (3) and backplate (4) respectively.
2. The metal foam aluminum composite acoustic panel according to claim 1, wherein: be provided with decoupling zero device (7) on fossil fragments (6), and fossil fragments (6) are connected with foamed aluminum plate (1) and inhale sound paper (2) through decoupling zero device (7) and connecting piece (5).
3. The metal foam aluminum composite acoustic panel according to claim 2, wherein: inhale sound paper (2) and be the fire prevention and inhale sound paper, and inhale the thickness of sound paper (2) and be 0.5mm to 1.2 mm.
4. The metal foam aluminum composite acoustic panel according to claim 1, wherein: the sound absorption structure can be a foamed aluminum plate or an open-cell foamed aluminum plate or a semi-open-cell foamed aluminum plate or a closed-cell foamed aluminum plate, and the thickness of the sound absorption structure is 3-50 mm.
5. The metal foam aluminum composite acoustic panel according to claim 4, wherein: the porosity of the microporous foamed aluminum plate is more than or equal to 35%, and the number of pores per square centimeter is not less than 100.
6. The metal foam aluminum composite acoustic panel according to claim 4, wherein: the semi-open-cell foamed aluminum plate has a porosity of more than or equal to 15% and no less than 40 pores per square centimeter.
7. The metal foam aluminum composite acoustic panel according to claim 4, wherein: the closed-cell foamed aluminum plate has a porosity of 80% or more and an average pore diameter of 6mm or more.
8. The metal foam aluminum composite acoustic panel according to claim 1, wherein: the perforated panel (3) and the back plate (4) are both galvanized steel plates or aluminum alloy plates.
9. The metal foam aluminum composite acoustic panel according to claim 1, wherein: the perforated panel (3), the back plate (4) and the keel (6) are fixedly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120108315.3U CN215164844U (en) | 2021-01-13 | 2021-01-13 | Metal foam aluminum composite sound absorption board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120108315.3U CN215164844U (en) | 2021-01-13 | 2021-01-13 | Metal foam aluminum composite sound absorption board |
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| Publication Number | Publication Date |
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| CN215164844U true CN215164844U (en) | 2021-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120108315.3U Active CN215164844U (en) | 2021-01-13 | 2021-01-13 | Metal foam aluminum composite sound absorption board |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114164990A (en) * | 2021-12-16 | 2022-03-11 | 北京九州一轨环境科技股份有限公司 | Self-bearing composite sound insulation and absorption board |
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2021
- 2021-01-13 CN CN202120108315.3U patent/CN215164844U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114164990A (en) * | 2021-12-16 | 2022-03-11 | 北京九州一轨环境科技股份有限公司 | Self-bearing composite sound insulation and absorption board |
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