CN202327500U - Pipeline silencer - Google Patents
Pipeline silencer Download PDFInfo
- Publication number
- CN202327500U CN202327500U CN2011204060198U CN201120406019U CN202327500U CN 202327500 U CN202327500 U CN 202327500U CN 2011204060198 U CN2011204060198 U CN 2011204060198U CN 201120406019 U CN201120406019 U CN 201120406019U CN 202327500 U CN202327500 U CN 202327500U
- Authority
- CN
- China
- Prior art keywords
- sound
- noise elimination
- absorbing material
- attenuation device
- guide plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a pipeline silencer comprising a shell with a silencing channel, and a sound absorbing material and a flow guide plate arranged in the shell. Micro holes are arranged in the surface of the sound absorbing material, and the flow guide plate is constructed in the silencing channel or a silencing channel inlet. The sound absorbing material is arranged at the position separated from the inner wall of the silencing channel for a certain distance, so that a silencing cavity is formed between the sound absorbing material and the inner wall of the silencing channel. The cross section of the flow guide plate is triangular or semi-circular. According to the pipeline silencer, due to the arrangement of the silencing channel and the flow guide plate, the sound energy of a sound source can be converted into heat energy effectively, and simultaneously the pipeline silencer has the advantages of light weight, convenience in processing, green and environmental friendliness, good silencing effect, high-speed wind resistance, ageing resistance, cyclic utilization and the like.
Description
Technical field
The utility model relates to a kind of silencing apparatus, relates in particular to a kind of duct attenuation device.
Background technique
For fed sheet of a media is the conveyance conduit of air, rock gas, coal gas, harmful gas etc.; Because the flowing velocity of fed sheet of a media is all very fast; Thereby make conveyance conduit can send very big noise, so on conveyance conduit, generally all can install the duct attenuation device additional to reduce noise.
The duct attenuation device of being sold on the market now (comprising straight tube, bend pipe) mainly contains two kinds of dissipative muffler and reactive mufflers.Dissipative muffler generally uses chemical fibre class material; Like the main sound-absorbing material of conducts such as glass wool, rock wool; But this kind material make, in service mostly for occur under the wind speed effect easy to break broken, air is polluted, human body skin and respiratory tract is damaged; In high temperature, low temperature or wet environment, be prone to caking, be prone to aging, sound absorbing capabilities poor stability, working life is short.Reactive muffler generally relies on the structure sound absorption; This series products such as multiple layer metal microperforated panel, foam metal plate, steel fiber etc.; But this type silencing apparatus manufacturing process requirement height, complex structure, quality weigh, fabricating cost is high, can not in the large size scope, use.
Based on the above-mentioned shortcoming of existing duct attenuation device, those skilled in the art is devoted to develop a kind of novel duct attenuation device, convenient, pollution-free, moistureproof high temperature resistant, the anti-high wind speed of its fabrication and processing, light weight.
The model utility content
Because the above-mentioned defective of existing technology, the utility model technical problem to be solved provides a kind of duct attenuation device, and it is simple in structure, pollution-free, moistureproof high temperature resistant.
For realizing above-mentioned purpose; The utility model provides a kind of duct attenuation device, comprises the housing with noise elimination passage, and is placed in sound-absorbing material and guide plate in this housing; Wherein this sound-absorbing material surface has micropore, and this guide plate framework is in the noise elimination passage or the noise elimination feeder connection.
This sound-absorbing material is arranged on the inwall position at a certain distance with this noise elimination passage, between this sound-absorbing material and this noise elimination vias inner walls, forms the noise elimination cavity.
As alternative embodiment, this sound-absorbing material can be arranged on this noise elimination vias inner walls.This muffler material also can be arranged on the noise elimination channel interior.
The cross section of this guide plate is triangle or semicircle.
The utility model duct attenuation device; Through noise elimination passage and guide plate are set; Make the acoustic energy of sound source be converted into heat energy effectively, have advantages such as light weight, easy to process, environmental protection, effective, the anti-high wind speed of noise elimination, anti-aging, reusable edible simultaneously.
Below will combine accompanying drawing that the technique effect of design, concrete structure and the generation of the utility model is described further, with purpose, characteristic and the effect of understanding the utility model fully.
Description of drawings
Fig. 1 is the plan view of the utility model duct attenuation device
Fig. 2 be Fig. 1 partly cut open figure.
Fig. 3 is the plan view of the utility model sound-absorbing material.
Fig. 4 is the amplification schematic perspective view of the triangular groove of I among Fig. 3.
Fig. 5 is the A-A sawtooth sectional drawing of Fig. 3.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further to set forth.
Like Fig. 1 and shown in Figure 2, the utility model provides a kind of duct attenuation device, comprises the housing 1 with noise elimination path 10 1; And be placed in the sound-absorbing material 2 and guide plate 3 in this housing 1; Wherein these sound-absorbing material 2 surfaces have micropore, and these guide plate 3 frameworks are regulated the flow direction of sound source in noise elimination path 10 1 or noise elimination path 10 1 inlet; Make sound source in noise elimination path 10 1, distribute uniformly, increase the efficient of eliminating the noise.When sound source was passed through this noise elimination path 10 1, after sound source got into the micropore sound absorption cavity generation resonance of this sound-absorbing material 2, acoustic energy was converted into heat energy generation noise elimination effect.The effect of eliminating the noise depends on the length of noise elimination path 10 1, and length is long more, and the noise elimination effect is good more.Drag losses depends on the cross section of noise elimination path 10 1, and cross section is more little, and resistance is big more.
This sound-absorbing material 2 is arranged on the inwall position at a certain distance with this noise elimination path 10 1, makes between this sound-absorbing material 2 and this noise elimination path 10 1 inwall, to form noise elimination cavity 201, to mention the acoustical absorptivity of this duct attenuation device.According to the utility model most preferred embodiment, this sound-absorbing material 2 is separated by 20 millimeters to 250 millimeters with this noise elimination path 10 1 inwall.What be worth to remind is, in this noise elimination cavity 201, can settle auxiliary muffler material, such as sponge, sheet material with holes etc.
As interchangeable embodiment, this sound-absorbing material 2 can be set directly on this noise elimination path 10 1 inwall, the cavity 201 of not eliminating the noise between the two.This muffler material also can be the same with this guide plate 3, is arranged on noise elimination path 10 1 inside.
At these noise elimination path 10 1 two ends flange-interface 4 is set, this duct attenuation device is connected with the pipeline of carrying sound source through this flange-interface 4.
As shown in Figure 3; This sound-absorbing material 2 is a sheetmetal; On this sheetmetal, be densely covered with the triangular groove 21 of indent, offer micropunch 22 in the bottom of this triangular groove 21, wherein this triangular groove 21 is for keeping flat setting; Its bottom surface 23 is the gore perpendicular to this sheetmetal, and this bottom surface 23 connects the gore 24 that two bases link to each other.
Further, as shown in Figure 5, the micropunch 22 that the bottom of this triangular groove 21 is offered is positioned at the following drift angle perpendicular to the gore of this sheetmetal, and this micropunch 22 is tri-angle-holed.The flange 25 that punching press is arranged on the trough rim of this triangular groove 21 also has the flange 26 of punching press on the micropunch edge on the bottom surface 23 of sheetmetal.This kind sheetmetal can be in humidity, and the environment of high wind speed uses down, has possessed light weight, anti-aging, easy processing, the pollution-free and cheap and good-quality advantage of installing.
The cross section of this guide plate 3 is a triangle, better sound source being shunted, sound source can be divided into during through this guide plate 3 up and down two strands or about two strands.What be worth to remind is, according to actual needs, a plurality of these guide plates 3 can be set in the noise elimination passage, such as a plurality of parallel or these guide plates 3 of intersecting are set, makes average being distributed in the noise elimination path 10 1 of sound source.
As alternative embodiment, the cross section of this guide plate 3 also can be semicircle, the effect in the time of can reaching cross section equally and be triangle.
In practical application; This noise elimination path 10 1 can be divided into several little noise elimination passages by this guide plate 3 and this sound-absorbing material 2; Make under the certain condition of the length of noise elimination path 10 1, the area of the sound-absorbing material 2 that the increase sound source can touch, thus reach the purpose that improves sound absorption efficiency.
More than describe the preferred embodiment of the utility model in detail.The ordinary skill that should be appreciated that related domain need not creative work and just can make many modifications and variation according to the design of the utility model.Therefore, all technician in the art according to the design of the utility model on the basis of existing technology through the available technological scheme of logical analysis, reasoning, or a limited experiment, all should be in determined protection domain by claims.
Claims (10)
1. duct attenuation device is characterized in that: comprise the housing with noise elimination passage, and be placed in sound-absorbing material and guide plate in this housing, wherein this sound-absorbing material surface has micropore, and this guide plate framework is in the noise elimination passage or the noise elimination feeder connection.
2. duct attenuation device as claimed in claim 1 is characterized in that: this sound-absorbing material is arranged on the inwall position at a certain distance with this noise elimination passage, between this sound-absorbing material and this noise elimination vias inner walls, forms the noise elimination cavity.
3. duct attenuation device as claimed in claim 2 is characterized in that: this sound-absorbing material and this noise elimination vias inner walls are separated by 20 millimeters to 250 millimeters.
4. duct attenuation device as claimed in claim 1 is characterized in that: this sound-absorbing material is arranged on this noise elimination vias inner walls.
5. duct attenuation device as claimed in claim 1 is characterized in that: this sound-absorbing material is arranged on this noise elimination channel interior.
6. like the described duct attenuation device of arbitrary claim in the claim 1 to 5, it is characterized in that: the cross section of this guide plate is triangle or semicircle.
7. duct attenuation device as claimed in claim 6 is characterized in that: this sound-absorbing material is a sheetmetal, on this sheetmetal, is densely covered with the triangular groove of indent, offers micropunch in the bottom of this triangular groove.
8. duct attenuation device as claimed in claim 7 is characterized in that: this triangular groove is for keeping flat setting, and its bottom surface is the gore perpendicular to this sheetmetal, and this bottom surface connects the gore that two bases link to each other.
9. duct attenuation device as claimed in claim 8; It is characterized in that: the micropunch that the bottom of this triangular groove is offered is positioned at the following drift angle perpendicular to the gore of this sheetmetal; This micropunch is tri-angle-holed; The flange that punching press is arranged on the trough rim of this triangular groove is at the flange that punching press is also arranged on the micropunch edge on the bottom surface of sheetmetal.
10. duct attenuation device as claimed in claim 6 is characterized in that: at these noise elimination passage two ends flange-interface is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204060198U CN202327500U (en) | 2011-10-21 | 2011-10-21 | Pipeline silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204060198U CN202327500U (en) | 2011-10-21 | 2011-10-21 | Pipeline silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202327500U true CN202327500U (en) | 2012-07-11 |
Family
ID=46439480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204060198U Expired - Fee Related CN202327500U (en) | 2011-10-21 | 2011-10-21 | Pipeline silencer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202327500U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108831431A (en) * | 2018-08-29 | 2018-11-16 | 正升环境科技股份有限公司 | Full range spreads silencing apparatus and vent passages sound-attenuating system |
-
2011
- 2011-10-21 CN CN2011204060198U patent/CN202327500U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108831431A (en) * | 2018-08-29 | 2018-11-16 | 正升环境科技股份有限公司 | Full range spreads silencing apparatus and vent passages sound-attenuating system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120711 Termination date: 20181021 |