CN209447537U - A kind of external silencer rain cover with absorption and regeneration noise function - Google Patents
A kind of external silencer rain cover with absorption and regeneration noise function Download PDFInfo
- Publication number
- CN209447537U CN209447537U CN201821931184.3U CN201821931184U CN209447537U CN 209447537 U CN209447537 U CN 209447537U CN 201821931184 U CN201821931184 U CN 201821931184U CN 209447537 U CN209447537 U CN 209447537U
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- proof housing
- sound proof
- silencer
- outer sound
- rain cover
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Abstract
The utility model is a kind of external silencer rain cover with absorption and regeneration noise function, including outer sound proof housing, in the cambered surface to raise upward at the top of outer sound proof housing, porous rock wool layer is installed on the inside of outer sound proof housing, interior sound proof housing is installed on the inside of porous rock wool layer, silencer is located on the inside of interior sound proof housing, is equipped with several through-holes on the side wall of outer sound proof housing and interior sound proof housing, the both ends of outer sound proof housing are installed with end plate.The beneficial effects of the utility model are: the regenerated noise of silencer can largely absorb after interior sound proof housing, porous rock wool layer, outer sound proof housing, and residual noise wave disappears totally after workshop top reflective and dispersion effect when the rain cover works；It is arc-shaped at the top of outer sound proof housing, sound wave on the one hand can be made effectively to pass through top cambered surface reflection, scattering, on the other hand, arcuate structure is conducive to the rapid landing of sleet, avoids rain cover corrosion；Common used material metal plate can be used to be made for the utility model, cheap, and construction is simple, convenient for disassembly and assembly.
Description
Technical field
The utility model relates to noise control equipment technical fields more particularly to a kind of with absorption and regeneration noise function
External silencer rain cover.
Background technique
Discharge noise is a kind of important noise source of industrial and mining enterprises, usually unstable by the flowing of high-temperature high-speed airflow
Qualitative generation.The features such as it has noise intensity big, and frequency spectrum is wide, pollution range is wide.Silencer can allow air-flow unobstructed logical
It crosses, and energy effective attenuation acoustic energy, a reasonable silencer of design can reduce duct noise 20-40dB.Silencer is in noise
It is widely used in control engineering, still, silencer can only reduce the acoustic energy entered by silencer arrival end, without
The reproduced air-flow noise caused by flow perturbation and the interaction of air-flow and wall surface can be reduced, meanwhile, silencer is a large amount of at present
Using porous material, sound absorbing performance is even failed by extreme influence under rainwater or wet environment.
Summary of the invention
The utility model aims to solve the problem that the deficiencies in the prior art, and provides a kind of with the external of absorption and regeneration noise function
Silencer rain cover.
In order to achieve the above object, the utility model adopts the following technical solutions:
A kind of external silencer rain cover with absorption and regeneration noise function, including outer sound proof housing, outer sound proof housing top
Portion is in the cambered surface to raise upward, and porous rock wool layer is installed on the inside of outer sound proof housing, is installed with interior sound proof housing on the inside of porous rock wool layer,
Silencer is located on the inside of interior sound proof housing, is equipped with several through-holes on the side wall of outer sound proof housing and interior sound proof housing, and the two of outer sound proof housing
End is installed with end plate, and the end plate of one end is equipped with the pore passed through for the air inlet pipe of silencer.
Preferably, through-hole is the micropore that diameter is less than 1mm.
Preferably, the punching rate of outer sound proof housing and interior sound proof housing is 1-5%.
Preferably, through-hole is evenly arranged on outer sound proof housing and interior sound proof housing.
Preferably, through-hole be equipped on outer sound proof housing and interior sound proof housing several rows and every row number of openings it is identical, often
The capable equal spaced set of several through-holes, the capable equal spaced set between row.
Preferably, extension eaves is installed on the side wall of two sides at the top of outer sound proof housing.
The beneficial effects of the utility model are:
(1) when the rain cover works, the regenerated noise of silencer largely can be by interior sound proof housing, porous rock wool layer, outer
It is absorbed after sound proof housing, residual noise wave disappears totally after workshop top reflective and dispersion effect, reaches and effectively removes regeneration and make an uproar
The purpose of sound.
(2) arc-shaped at the top of outer sound proof housing, sound wave on the one hand can be made effectively to pass through top cambered surface reflection, scattering, another party
Face, arcuate structure are conducive to the rapid landing of sleet, will not accumulate, and avoid rain cover corrosion.
(3) common used material metal plate can be used to be made for the utility model, cheap, and construction is simple, convenient for disassembly and assembly.
Detailed description of the invention
Fig. 1 is the main view of the utility model；
Fig. 2 is the left view of the utility model；
Fig. 3 is the cross-sectional view in Fig. 1 at A-A；
Fig. 4 is the cross-sectional view in Fig. 2 at B-B；
In figure: the outer sound proof housing of 1-；The porous rock wool layer of 2-；Sound proof housing in 3-；4- through-hole；5- end plate；6- pore；7- extends
Eaves；8- silencer；9- air inlet pipe；
It is described in detail below with reference to the embodiments of the present invention referring to attached drawing.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples:
As shown, a kind of external silencer rain cover with absorption and regeneration noise function, including outer sound proof housing 1,
It is in the cambered surface to raise upward at the top of outer sound proof housing 1, porous rock wool layer 2, porous 2 inside of rock wool layer is installed on the inside of outer sound proof housing 1
It is installed with interior sound proof housing 3, silencer 8 is located at interior 3 inside of sound proof housing, if being equipped on the side wall of outer sound proof housing 1 and interior sound proof housing 3
Dry through-hole 4, the both ends of outer sound proof housing 1 are installed with end plate 5, and the end plate 5 of one end is equipped with to be worn for the air inlet pipe 9 of silencer 8
The pore 6 crossed.
Preferably, through-hole 4 is the micropore that diameter is less than 1mm.
Preferably, the punching rate of outer sound proof housing 1 and interior sound proof housing 3 is 1-5%.
Preferably, through-hole 4 is evenly arranged on outer sound proof housing 1 and interior sound proof housing 3.
Preferably, through-hole 4 is equipped with the 4 quantity phase of through-hole of several rows and every row on outer sound proof housing 1 and interior sound proof housing 3
Together, the equal spaced set of several through-holes 4 of every row, the capable equal spaced set between row.
Preferably, it is installed on the side wall of outer 1 top two sides of sound proof housing and extends eaves 7.
When silencer 8 works, the through-hole 4 on 3 side wall of outer sound proof housing 1 and interior sound proof housing is absorbed sound former using helmholtz resonance
Reason, in vibration processes, wall friction in the air column and through-hole 4 that are formed in through-hole 4 and sound energy consumption amount reach noise elimination purpose, more
Hole rock wool layer 2 increases itself and 4 junction frictional resistance of through-hole, and then broadening sound sucting band, meanwhile, inside and outside bilayer through-hole 4 is set
Meter also can broadening sound sucting band.
In actual use, regenerated noise passes through interior sound proof housing 3, porous rock wool layer 2, outer sound proof housing 1, most of frequency band
Sound wave has been absorbed, and because rain cover top is arc-shaped, sound wave is oblique to be reached at the top of workshop remaining sound wave, is reflected and is scattered to
Overhead will not cause noise pollution to ground staff.
When in rain and snow, sleet vertically drops down onto outer 1 top of sound proof housing, and because outer 1 top of sound proof housing is arc-shaped, sleet will not
It is collected at rain cover, but is dropped down at the top of the workshop of outer 1 two sides of sound proof housing due to gravity.
The utility model is exemplarily described above in conjunction with attached drawing, it is clear that the utility model specific implementation not by
The limitation of aforesaid way, if the method concept of the utility model and the various improvement of technical solution progress are used, or without
Improvement directly applies to other occasions, both is within the protection scope of the present invention.
Claims (6)
1. a kind of external silencer rain cover with absorption and regeneration noise function, including outer sound proof housing (1), feature exists
In in the cambered surface to raise upward at the top of outer sound proof housing (1), outer sound proof housing (1) inside is installed with porous rock wool layer (2), Vuggy rock
It is installed with interior sound proof housing (3) on the inside of cotton layer (2), silencer (8) is located on the inside of interior sound proof housing (3), outer sound proof housing (1) and interior noise elimination
It covers and is equipped with several through-holes (4) on the side wall of (3), the both ends of outer sound proof housing (1) are installed with end plate (5), the end plate (5) of one end
It is equipped with the pore (6) passed through for the air inlet pipe (9) of silencer (8).
2. the external silencer rain cover according to claim 1 with absorption and regeneration noise function, which is characterized in that
Through-hole (4) is the micropore that diameter is less than 1mm.
3. the external silencer rain cover according to claim 1 with absorption and regeneration noise function, which is characterized in that
The punching rate of outer sound proof housing (1) and interior sound proof housing (3) is 1-5%.
4. the external silencer rain cover according to claim 1 with absorption and regeneration noise function, which is characterized in that
Through-hole (4) is evenly arranged on outer sound proof housing (1) and interior sound proof housing (3).
5. the external silencer rain cover according to claim 4 with absorption and regeneration noise function, which is characterized in that
Through-hole (4) is equipped with several rows on outer sound proof housing (1) and interior sound proof housing (3) and through-hole (4) quantity of every row is identical, every row
The equal spaced set of several through-holes (4), the capable equal spaced set between row.
6. the external silencer rain cover according to claim 1 with absorption and regeneration noise function, which is characterized in that
It is installed on the side wall of two sides at the top of outer sound proof housing (1) and extends eaves (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821931184.3U CN209447537U (en) | 2018-11-22 | 2018-11-22 | A kind of external silencer rain cover with absorption and regeneration noise function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821931184.3U CN209447537U (en) | 2018-11-22 | 2018-11-22 | A kind of external silencer rain cover with absorption and regeneration noise function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209447537U true CN209447537U (en) | 2019-09-27 |
Family
ID=68011833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821931184.3U Active CN209447537U (en) | 2018-11-22 | 2018-11-22 | A kind of external silencer rain cover with absorption and regeneration noise function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209447537U (en) |
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2018
- 2018-11-22 CN CN201821931184.3U patent/CN209447537U/en active Active
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