CN102927059A - Novel acoustic shield - Google Patents
Novel acoustic shield Download PDFInfo
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- CN102927059A CN102927059A CN2011102283637A CN201110228363A CN102927059A CN 102927059 A CN102927059 A CN 102927059A CN 2011102283637 A CN2011102283637 A CN 2011102283637A CN 201110228363 A CN201110228363 A CN 201110228363A CN 102927059 A CN102927059 A CN 102927059A
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- glass wool
- layer
- novel acoustic
- steel plate
- acoustic hood
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Abstract
The invention relates to a novel acoustic shield. The novel acoustic shield comprises a steel plate, wherein a damping layer is arranged below the steel plate; a first glass wool layer and a second glass wool layer are arranged below the damping layer; glass cloth is arranged below the second glass wool layer; and a punching plate is arranged below the glass cloth. As the damping layer and glass wool layers with different specific gravity are adopted, the novel acoustic shield, disclosed by the invention, has the advantage of playing a good sound absorption effect.
Description
Technical field
The present invention relates to a kind of sound insulation device, be specifically related to the acoustic hood of the coordinative composition of equipments such as a kind of blower.
Background technique
In recent years, man-made noise is polluted has become the environmental pollution problem that receives much concern gradually.Country has put into effect relevant country, industry standard and the relevant laws and regulations such as the Law on Environmental Protection of the People's Republic of China, " People's Republic of China's noise pollution prevention method ", " Industrial Enterprise Factory Boundary ambient noise emission standard " in succession.Appearance and enforcement along with these relevant laws and regulations, the generations such as large fan, central hollow are transferred house, water pump machine room, cooling tower, new blower fan vertical shaft, boiler, electric substation, transformer, air compressor all belong to the noise abatement scope than the equipment of very noisy, and the sound insulation and noise reducing product development is widely used.With regard to the sound insulation aspect, product is also day by day various, roughly is divided into several large classes such as acoustic hood, isolation booth, sound proof window, sound barrier.
The machinery such as blower, air compressor is widely used in the industrial fields such as environmental protection, electric power, oil, chemical industry, grain conveying.And the noise that produces during the equipment operations such as blower, air compressor is larger, and its noise mainly comprises the mechanical noise of air power noise, casing and the bearing radiation of suction port and relief opening radiation, the noise of vibration of foundation radiation, the electromagnetic noise of motor etc.
The main structure of existing acoustic hood is its cover wall, and it must have enough noise insulation factors, could intercept the unlikely unofficial biography of noise of sound source machinery equipment, thereby makes reducing noise below the permission sound level of defined.According to mass law, the structure of cover wall should be heavy, therefore, existing acoustic hood adopts the structures such as brick, stone, concrete or Plate Steel usually, and it is suitable, very heavy to cause acoustic hood to be difficult to sonic source device in the making moulding time, particularly when considering the factors such as maintenance of on-the-spot spatial condition, sonic source device, require acoustic hood should lightly make things convenient for, be convenient to mounting or dismounting and transportation, but existing its structure of acoustic hood is heavy, can't satisfy above-mentioned requirements.
Summary of the invention
Goal of the invention: the objective of the invention is provides a kind of sound-absorbing effect good Novel acoustic hood in order to overcome deficiency of the prior art.
Technological scheme: Novel acoustic hood of the present invention, comprise steel plate, have damping layer at this steel plate, have the first glass wool layer and the second glass wool layer at this damping layer, have glass cloth at the second glass wool, have punched-plate at this glass cloth.
The thickness of described damping layer is 2-3 times of described steel plate thickness, to reduce its noise radiation.
The proportion of described the first glass wool layer is more great than the ratio of the second glass wool layer, forms the form that unit weight increases gradually, can obtain larger acoustically effective.
Paste successively between described steel plate, damping layer, the first glass wool layer, the second glass wool layer, the glass cloth and be fixedly connected with.
Described Novel acoustic hood be shaped as circle, square, rectangular or polygonal, concrete application of shape is decided according to actual conditions.
Generation resonance and coincidence effect when passing to large-area steel plate for weakening sound wave, acoustic hood cover body are selected 2mm Plate Steel and internally-damped layer design, and damping layer thickness is 2-3 times of steel plate thickness, to reduce its noise radiation.
Adopt the glass wool superimposition of different unit weights together, form the form that unit weight increases gradually, can obtain larger acoustically effective.
Beneficial effect: the present invention compared with prior art, its remarkable advantage is: adopt the damping layer glass wool layer different with proportion, can play good sound-absorbing effect.
Description of drawings
Fig. 1 is structural representation of the present invention.
Wherein:
1, steel plate; 2, damping layer; 3, the first glass wool layer; 4, the second glass wool 4; 5, glass cloth; 6, punched-plate
Embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
As described in Figure 1, Novel acoustic hood of the present invention comprises steel plate 1, and its thickness is 2mm, has damping layer 2 at this steel plate 1, and these damping layer 2 thickness are 5mm, and having proportion at this damping layer 2 is 32kg/m
3The first glass wool layer 3 and proportion be 57kg/m
3The second glass wool layer 4, have the glass cloth 5 of 0.5mm at the second glass wool 4, have 0.5mm punched-plate 6 at this glass cloth 5; Paste successively between described steel plate 1, damping layer 2, the first glass wool layer 3, the second glass wool layer 4, the glass cloth 5 and be fixedly connected with; Described Novel acoustic hood be shaped as circle, square, rectangular or polygonal.The glass wool superimposition that the present invention adopts different unit weights forms the form that unit weight increases gradually together, can play good sound-absorbing effect.
The part that the present invention does not relate to all prior art that maybe can adopt same as the prior art is realized.
Claims (5)
1. Novel acoustic hood, comprise steel plate (1), it is characterized in that: have damping layer (2) at this steel plate (1), have the first glass wool layer (3) and the second glass wool layer (4) at this damping layer (2), (4) are provided with glass cloth (5) under the second glass wool, have punched-plate (6) at this glass cloth.
2. Novel acoustic hood according to claim 1 is characterized in that: the thickness of described damping layer (2) be described steel plate (1) thickness 2-3 doubly.
3. Novel acoustic hood according to claim 1, it is characterized in that: the proportion of described the first glass wool layer (3) is more great than the ratio of the second glass wool layer (4).
4. Novel acoustic hood according to claim 1 is characterized in that: paste successively between described steel plate (1), damping layer (2), the first glass wool layer (3), the second glass wool layer (4), the glass cloth (5) and be fixedly connected with.
5. Novel acoustic hood according to claim 1 is characterized in that: described Novel acoustic hood be shaped as circle, square, rectangular or polygonal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102283637A CN102927059A (en) | 2011-08-10 | 2011-08-10 | Novel acoustic shield |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102283637A CN102927059A (en) | 2011-08-10 | 2011-08-10 | Novel acoustic shield |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102927059A true CN102927059A (en) | 2013-02-13 |
Family
ID=47641954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102283637A Pending CN102927059A (en) | 2011-08-10 | 2011-08-10 | Novel acoustic shield |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102927059A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104329294A (en) * | 2013-07-22 | 2015-02-04 | 张崇欣 | Fan sound insulation cover ventilation and sound absorption structure |
| CN108005962A (en) * | 2017-11-15 | 2018-05-08 | 浙江理工大学 | A kind of noise reduction rear guide vane for propeller fan |
| CN108301921A (en) * | 2017-01-11 | 2018-07-20 | 上海怡允环境科技有限公司 | A kind of sound insulation of engine, noise reduction, exhaust treatment system |
| CN112669801A (en) * | 2020-12-31 | 2021-04-16 | 上海电气燃气轮机有限公司 | Sound insulation and absorption plate unit, sound insulation and absorption plate and housing |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4428454A (en) * | 1981-09-24 | 1984-01-31 | Capaul Raymond W | Acoustical panel construction |
| CN2880628Y (en) * | 2006-03-14 | 2007-03-21 | 金龙联合汽车工业（苏州）有限公司 | Multifunction partition apparatus of engine cabin of passenger car |
| CN201099926Y (en) * | 2007-10-24 | 2008-08-13 | 山东省章丘鼓风机厂有限公司 | Acoustical enclosure wall |
| US20100101891A1 (en) * | 2007-01-17 | 2010-04-29 | Central Glass Co., Ltd. | Sound-insulating laminated structure and method for the production thereof |
| CN202301211U (en) * | 2011-08-10 | 2012-07-04 | 百事德机械（江苏）有限公司 | Novel acoustic hood |
-
2011
- 2011-08-10 CN CN2011102283637A patent/CN102927059A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4428454A (en) * | 1981-09-24 | 1984-01-31 | Capaul Raymond W | Acoustical panel construction |
| CN2880628Y (en) * | 2006-03-14 | 2007-03-21 | 金龙联合汽车工业（苏州）有限公司 | Multifunction partition apparatus of engine cabin of passenger car |
| US20100101891A1 (en) * | 2007-01-17 | 2010-04-29 | Central Glass Co., Ltd. | Sound-insulating laminated structure and method for the production thereof |
| CN201099926Y (en) * | 2007-10-24 | 2008-08-13 | 山东省章丘鼓风机厂有限公司 | Acoustical enclosure wall |
| CN202301211U (en) * | 2011-08-10 | 2012-07-04 | 百事德机械（江苏）有限公司 | Novel acoustic hood |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104329294A (en) * | 2013-07-22 | 2015-02-04 | 张崇欣 | Fan sound insulation cover ventilation and sound absorption structure |
| CN108301921A (en) * | 2017-01-11 | 2018-07-20 | 上海怡允环境科技有限公司 | A kind of sound insulation of engine, noise reduction, exhaust treatment system |
| CN108005962A (en) * | 2017-11-15 | 2018-05-08 | 浙江理工大学 | A kind of noise reduction rear guide vane for propeller fan |
| CN108005962B (en) * | 2017-11-15 | 2019-08-02 | 浙江理工大学 | A kind of noise reduction rear guide vane for propeller fan |
| CN112669801A (en) * | 2020-12-31 | 2021-04-16 | 上海电气燃气轮机有限公司 | Sound insulation and absorption plate unit, sound insulation and absorption plate and housing |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130213 |