CN205423343U - But elasticity silencer of variable cross section - Google Patents
But elasticity silencer of variable cross section Download PDFInfo
- Publication number
- CN205423343U CN205423343U CN201620225154.5U CN201620225154U CN205423343U CN 205423343 U CN205423343 U CN 205423343U CN 201620225154 U CN201620225154 U CN 201620225154U CN 205423343 U CN205423343 U CN 205423343U
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- CN
- China
- Prior art keywords
- straight tube
- section
- thick bamboo
- acoustical panel
- straight section
- 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 but elasticity silencer of variable cross section, include: a first straight section of thick bamboo and the straight section of thick bamboo of second, the straight section of thick bamboo of second is concentric to be set up in a first straight section of thick bamboo, it inhales the sound cotton to be provided with set cylindric between a first straight section of thick bamboo and the straight section of thick bamboo of second, the straight section of thick bamboo of second is gone up to gather there is the air vent, the both ends correspondence of the straight section of thick bamboo of second is provided with inlet flange and exhaust flange, be provided with the fixed plate to extending in the inlet flange in the straight section of thick bamboo of second, the fixed plate both sides are provided with semi -circular acoustical panel respectively, semi -circular acoustical panel articulates the end at the fixed plate respectively, the side of semi -circular acoustical panel and fixed plate is provided with the extension spring and is connected. In this way, but elasticity silencer of variable cross section, when the air current was big, semi -circular acoustical panel outwards overturn, increased the cross -section that the amortization was handled, promoted and fell the work efficiency that makes an uproar, when the air current was little, semi -circular acoustical panel resetd under the effect of extension spring, reduced the windage.
Description
Technical field
This utility model relates to deafener field, particularly relates to the elastic acoustic filter of a kind of variable cross section.
Background technology
The Application comparison of blower fan is extensive, can be aerated, dispels the heat, gas compression and material conveying, has outfit in a lot of factories, mall.
The operating at a high speed of the job demand of blower fan, could drive the flow at high speed of gas to carry out relevant work, and during intake and exhaust, the wind of high speed winds miscarriage life is made an uproar the biggest, needs to carry out corresponding noise reduction process, reduces noise pollution.Although common deafener can reduce the propagation of noise to a certain extent, but cannot change cross section, bad adaptability according to throughput, need to improve.
Utility model content
This utility model, mainly solving the technical problems that provide the elastic acoustic filter of a kind of variable cross section, increases the cross section that noise reduction processes when air-flow is big, air-flow hour reduces windage.
For solving above-mentioned technical problem, the technical scheme that this utility model uses is: provide the elastic acoustic filter of a kind of variable cross section, including: the first straight tube and the second straight tube, described second straight tube is arranged concentrically in the first straight tube, it is provided with sleeve shaped acoustical cotton between described first straight tube and the second straight tube, it is densely covered with passage in described second straight tube, the two ends of described second straight tube are correspondingly arranged on inlet flange and exhaust flange, the fixed plate extended in oriented second straight tube is set in described inlet flange, described fixed plate both sides are respectively arranged with semicircle acoustical panel, described semicircle acoustical panel is respectively hinged at the end of fixed plate, described semicircle acoustical panel is provided with extension spring with the side of fixed plate and is connected.
In one preferred embodiment of this utility model, the end of described first straight tube and the second straight tube is provided with annular slab and is connected and sealed.
In one preferred embodiment of this utility model, described semicircle acoustical panel includes that two pieces of perforated boards and semicircle acoustical cotton, described semicircle acoustical cotton are arranged between two pieces of perforated boards respectively.
In one preferred embodiment of this utility model, described two pieces of perforated boards are densely covered with micropore.
In one preferred embodiment of this utility model, the radius of described semicircle acoustical panel is less than the radius of the second straight tube endoporus.
The beneficial effects of the utility model are: the elastic acoustic filter of a kind of variable cross section that this utility model is pointed out, add turnover semicircle acoustical panel especially, when air-flow is big, semicircle acoustical panel outwards overturns, and increases the cross section that noise reduction processes, and promotes noise reduction work efficiency, the when that air-flow being little, semicircle acoustical panel resets under the effect of extension spring, reduces windage, good to the adaptability of air-flow.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme in this utility model embodiment, in describing embodiment below, the required accompanying drawing used is briefly described, apparently, accompanying drawing in describing below is only embodiments more of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings, wherein:
Fig. 1 is the structural representation of elastic acoustic filter one preferred embodiment of a kind of variable cross section of this utility model.
Detailed description of the invention
Technical scheme in this utility model embodiment will be clearly and completely described below, it is clear that described embodiment is only a part of embodiment of the present utility model rather than whole embodiments.Based on the embodiment in this utility model, all other embodiments that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.
Referring to Fig. 1, this utility model embodiment includes:
A kind of elastic acoustic filter of variable cross section, including: the first straight tube 1 and the second straight tube 2, described second straight tube 2 is arranged concentrically in the first straight tube 1, it is provided with sleeve shaped acoustical cotton 3 between described first straight tube 1 and the second straight tube 2, the end of described first straight tube 1 and the second straight tube 2 is provided with annular slab 11 and is connected and sealed, it is to avoid gas leakage.Sleeve shaped acoustical cotton 3 has the effect of noise reduction, and described second straight tube 2 is densely covered with passage, can reduce air-flow by noise during the second straight tube 2.
The two ends of described second straight tube 2 are correspondingly arranged on inlet flange 4 and exhaust flange 5, for blower fan, the connection of trachea, the fixed plate 6 extended in oriented second straight tube 2 is set in described inlet flange 4, described fixed plate 6 both sides are respectively arranged with semicircle acoustical panel 8, described semicircle acoustical panel 8 is respectively hinged at the end of fixed plate 6, and described semicircle acoustical panel 8 is provided with extension spring 7 with the side of fixed plate 6 and is connected.When air-flow is big, the most outwards upset of semicircle acoustical panel 8, increase air-flow by time the cross section that processes of noise reduction, promote noise reduction work efficiency.
Described semicircle acoustical panel 8 includes two pieces of perforated boards and semicircle acoustical cotton respectively, and described semicircle acoustical cotton is arranged between two pieces of perforated boards, and described two pieces of perforated boards are densely covered with micropore, and air-flow enters semicircle acoustical cotton by micropore, reduces noise.
The radius of described semicircle acoustical panel 8 is less than the radius of the second straight tube 2 endoporus, it is to avoid semicircle acoustical panel 8 collides the second straight tube 2 inwall when overturning, and promotes the stability used.
In sum, the elastic acoustic filter of a kind of variable cross section that this utility model is pointed out, the semicircle acoustical panel 8 of utilization coordinates with extension spring 7, it is achieved that the air-flow change by cross section in the second straight tube 2, good to the adaptability of air-flow size, effectively reduces pneumatic noise.
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every equivalent structure utilizing this utility model description to be made or equivalence flow process conversion; or directly or indirectly it is used in other relevant technical field, the most in like manner it is included in scope of patent protection of the present utility model.
Claims (5)
1. the elastic acoustic filter of a variable cross section, including: the first straight tube and the second straight tube, described second straight tube is arranged concentrically in the first straight tube, it is characterized in that, it is provided with sleeve shaped acoustical cotton between described first straight tube and the second straight tube, it is densely covered with passage in described second straight tube, the two ends of described second straight tube are correspondingly arranged on inlet flange and exhaust flange, the fixed plate extended in oriented second straight tube is set in described inlet flange, described fixed plate both sides are respectively arranged with semicircle acoustical panel, described semicircle acoustical panel is respectively hinged at the end of fixed plate, described semicircle acoustical panel is provided with extension spring with the side of fixed plate and is connected.
The elastic acoustic filter of variable cross section the most according to claim 1, it is characterised in that the end of described first straight tube and the second straight tube is provided with annular slab and is connected and sealed.
The elastic acoustic filter of variable cross section the most according to claim 1, it is characterised in that described semicircle acoustical panel includes that two pieces of perforated boards and semicircle acoustical cotton, described semicircle acoustical cotton are arranged between two pieces of perforated boards respectively.
The elastic acoustic filter of variable cross section the most according to claim 3, it is characterised in that be densely covered with micropore on described two pieces of perforated boards.
The elastic acoustic filter of variable cross section the most according to claim 1, it is characterised in that the radius of described semicircle acoustical panel is less than the radius of the second straight tube endoporus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620225154.5U CN205423343U (en) | 2016-03-23 | 2016-03-23 | But elasticity silencer of variable cross section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620225154.5U CN205423343U (en) | 2016-03-23 | 2016-03-23 | But elasticity silencer of variable cross section |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205423343U true CN205423343U (en) | 2016-08-03 |
Family
ID=56547853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620225154.5U Expired - Fee Related CN205423343U (en) | 2016-03-23 | 2016-03-23 | But elasticity silencer of variable cross section |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205423343U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105673575A (en) * | 2016-03-23 | 2016-06-15 | 苏州弗士曼精密机械有限公司 | Variable-section elastic silencer |
-
2016
- 2016-03-23 CN CN201620225154.5U patent/CN205423343U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105673575A (en) * | 2016-03-23 | 2016-06-15 | 苏州弗士曼精密机械有限公司 | Variable-section elastic silencer |
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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 |
Granted publication date: 20160803 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |