CN86203032U - Multilayer material with composite structure for sound insulating and absorbing - Google Patents
Multilayer material with composite structure for sound insulating and absorbing Download PDFInfo
- Publication number
- CN86203032U CN86203032U CN 86203032 CN86203032U CN86203032U CN 86203032 U CN86203032 U CN 86203032U CN 86203032 CN86203032 CN 86203032 CN 86203032 U CN86203032 U CN 86203032U CN 86203032 U CN86203032 U CN 86203032U
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- sound
- fiber reinforced
- reinforced plastic
- sound insulating
- glass fiber
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Abstract
The utility model relates to a multilayer material with a composite structure for sound insulation and absorption, which can be made into sound insulating covers or sound insulating plates to control industrial noise, and belongs to materials from which a noise reduction muffler device of various machines, like a pump, a fan, a blower fan and an electric motor, are made. The material with a composite structure is formed by that soft and hard soundproof sound absorbing materials, such as retardant glass fiber reinforced plastic of which one side is coated with damping materials, extra-fine glass wool, etc., are alternatively arranged, and then are coated with one layer of glass cloth and soft iron silk screen or a breaker plate. The effect of noise reduction and sound-deadening is obvious by using a sound insulating cover made from the material. The utility model has the advantages of high temperature resistance, corrosion prevention, light body, easy manufacture and low price and fine quality.
Description
A kind of multi-layer compound structure material can be made acoustic hood, sound insulationg board with it, with the control man-made noise.The material that belongs to mechanical noise reduction silencing apparatus such as making pump, fan, motor and blower fan.
Industry dynamical type machinery will produce air power noise, electromagnetic noise and mechanical noise as the running of air blast, and based on air power noise.Its noise spectrum is the wideband noise spectrum based on middle and high frequency.When high pressure centrifugal blower fan unit turns round, through the ND of environmental administration
2Precision sound level meter is measured, and indoor sound pressure level reaches 120～125 decibels, has exceeded China's " industrial enterprise's noise sanitary standard ", causes serious environmental to pollute, and is endangering workman's physical and mental health.
At present, by retrieval: about pump, fan, blower fan, the noise reduction silencing means belong to F04C29/06 and F04D29/66 two classes in the classification of international system, the two piece documents relevant with the utility model now are provided, one piece is DRP DT-2751469, a piece of writing " sound arrester of pump or motor by name.The sound arrester that this patent is introduced, comprise two parts: acoustic hood and cover cap, each part all are divided into inside and outside two layers, and its two interlayer leaves the space and is evacuated.Also having one piece is French Patent (FRP) FR2266251 number, and a piece of writing is by name: " sound arrester that sound arrester, particularly industrial air compressor are used ", the sound proof box that mutual several the plates of rabbeting of a kind of usefulness are formed has been proposed, on the inner surface of plate soft foam is arranged.
At home, generally adopt the steel plate of 2.5～4 millimeters thick to make acoustic hood, it covers body from great, and processing difficulties is not corrosion-resistant, and inadequate supply.In order to overcome these shortcomings, improve the acoustic hood performance.Tin-free steel ironworks (82 years) has been developed a kind of multi-layer compound structure material and has been made into acoustic hood (being published in " Jiangsu metallurgy " 86.1 phases).This multi-layer compound structure material be soft by flame retardant glass fiber reinforced plastic and super glass wool etc., insulate against sound and cover one deck glass cloth and soft iron silk screen or porous plate again after sound-absorbing material is alternately arranged and constituted firmly.Wherein soft sound-absorbing material can also be: foam sponge, chemical fibre material, glass fiber etc., hard sound insulating material can also be used rigid plastic sheet and plank etc.
The purpose of this utility model is: further improve the sound insulation sound absorption of multi-layer compound structure material, make the acoustic hood noise reduction noise elimination effect of material making thus remarkable.
Technical characterictic of the present utility model is: the one side in flame retardant glass fiber reinforced plastic and super glass wool handing-over, be coated with the last layer damping material, and its damping material is selected H for use
82-2Heat isolating damping slurry effect is best, and it has advantages such as high temperature resistant, easy to process, low price.H
82-2The heat isolating damping slurry is a kind of heat-insulating damp material of Shanghai Kailin Paint Factory's development and production, and its base-material is an epoxy-ester; Filler is: graphite powder, mica powder, talcum powder, asbestos wool etc.; Formulated by a certain percentage with blowing agent.Simultaneously, flame retardant glass fiber reinforced plastic and super glass wool are above alternately the arranging of twice or twice, make thickness to 40～70 millimeter that increase sandwich.
Advantage of the present utility model: sound insulation noise control effect is remarkable.Through the NO of environmental administration
2Precision sound level meter at the Ventilator Room scene from the former dbullioscope at one meter of blower fan, can reach the ideal effect of being measured, be that noise drops to 80 decibels from 120 decibels, loudness level drops to 89 from 128, causes loudness to be equivalent to reduce by 93%, and the language disturbed one drops to 74 decibels for 28 decibels, make former earsplitting machine room after administering, talk mutually, clear listening, noise level has met China's " industrial enterprise's noise sanitary standard " fully.This acoustic hood can be high temperature resistant, anticorrosion and body is light, easily processing, good and cheap.
Embodiment of the present utility model as shown in drawings,
Figure (1) is the profile of multi-layer compound structure material.
Outermost layer is flange (1), is followed successively by flame retardant glass fiber reinforced plastic (2) damping layer (3) super glass wool (4) flame retardant glass fiber reinforced plastic (5) super glass wool (6) herringbone glass cloth (7) and soft iron silk screen (8) thereafter.The gross thickness of sandwich is 60 millimeters.
Claims (4)
1, a kind of multi-layer compound structure material of the sound absorption of insulating against sound, can be used to make acoustic hood or sound insulationg board, with the control man-made noise, the material that belongs to mechanical noise reduction silencing apparatus such as making pump, fan, motor and blower fan, it by: after flame retardant glass fiber reinforced plastic and super glass wool etc. are soft, the sound-absorbing material that insulates against sound firmly alternately arranges, cover one deck glass cloth and soft iron silk screen or porous plate again and constitute, it is characterized in that: the one side at flame retardant glass fiber reinforced plastic scribbles one or more layers damping material.
2, sandwich as claimed in claim 1, wherein, damping material is the heat isolating damping slurry.
3, sandwich as claimed in claim 1, wherein, flame retardant glass fiber reinforced plastic and super glass wool are twice above alternately arranging.
4, as claim 1 or 2 or 3 described sandwiches, it is characterized in that: the thickness of multi-layer compound structure is 40～70 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86203032 CN86203032U (en) | 1986-05-29 | 1986-05-29 | Multilayer material with composite structure for sound insulating and absorbing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86203032 CN86203032U (en) | 1986-05-29 | 1986-05-29 | Multilayer material with composite structure for sound insulating and absorbing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN86203032U true CN86203032U (en) | 1987-04-15 |
Family
ID=4806419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86203032 Expired - Lifetime CN86203032U (en) | 1986-05-29 | 1986-05-29 | Multilayer material with composite structure for sound insulating and absorbing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN86203032U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100453988C (en) * | 2004-07-26 | 2009-01-21 | 时空社 | Curved panel for acoustical shell, method of manufacturing the same, and acoustical shell using the same |
| CN102509563A (en) * | 2011-11-29 | 2012-06-20 | 阿诺德绝缘材料技术（吴江）有限公司 | Anti-noise shell |
| CN102855871A (en) * | 2011-07-01 | 2013-01-02 | 湖北省风机厂有限公司 | Sound insulation equipment |
| CN103266791A (en) * | 2013-06-04 | 2013-08-28 | 陈树伟 | Sound insulation cover room of coal mill |
-
1986
- 1986-05-29 CN CN 86203032 patent/CN86203032U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100453988C (en) * | 2004-07-26 | 2009-01-21 | 时空社 | Curved panel for acoustical shell, method of manufacturing the same, and acoustical shell using the same |
| CN102855871A (en) * | 2011-07-01 | 2013-01-02 | 湖北省风机厂有限公司 | Sound insulation equipment |
| CN102509563A (en) * | 2011-11-29 | 2012-06-20 | 阿诺德绝缘材料技术（吴江）有限公司 | Anti-noise shell |
| CN103266791A (en) * | 2013-06-04 | 2013-08-28 | 陈树伟 | Sound insulation cover room of coal mill |
| CN103266791B (en) * | 2013-06-04 | 2015-10-28 | 陈树伟 | A kind of sound insulation cover room of coal mill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |