CN105673575A - Variable-section elastic silencer - Google Patents
Variable-section elastic silencer Download PDFInfo
- Publication number
- CN105673575A CN105673575A CN201610167144.5A CN201610167144A CN105673575A CN 105673575 A CN105673575 A CN 105673575A CN 201610167144 A CN201610167144 A CN 201610167144A CN 105673575 A CN105673575 A CN 105673575A
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- CN
- China
- Prior art keywords
- straight tube
- semicircle
- semi
- fixed plate
- acoustical panel
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
Abstract
The invention discloses a variable-section elastic silencer which comprises a first straight tube and a second straight tube. The second straight tube is concentrically arranged in the first straight tube. A piece of sleeve-shaped sound absorbing cotton is arranged between the first straight tube and the second straight tube. Vent holes are densely distributed in the second straight tube. The two ends of the second straight tube are provided with an air inlet flange and an exhaust flange correspondingly. A fixed plate extending into the second straight tube is arranged in the air inlet flange. The two sides of the fixed plate are provided with semi-circular silencing plates correspondingly. The semi-circular silencing plates are hinged to the tail end of the fixed plate. The semi-circular silencing plates and the side faces of the fixed plate are connected through tension springs. According to the variable-section elastic silencer, when air flow is large, the semi-circular silencing plates turn outwards to increase the cross sections for silencing treatment and improve the noise reduction efficiency; and when the air flow is small, the semi-circular silencing plates reset under the action of the tension springs, and accordingly wind resistance is reduced.
Description
Technical field
The present invention relates to deafener field, particularly relate to the elastic acoustic filter of a kind of variable cross section.
Background technology
The Application comparison of blower fan is extensive, it is possible to is 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 all relatively larger, it is necessary to carries 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, it is necessary to improve.
Summary of the invention
The technical problem that present invention mainly solves is to 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, and air-flow hour reduces windage.
For solving above-mentioned technical problem, the technical scheme that the present invention adopts 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, described second straight tube is densely covered with passage, the two ends of described second straight tube are correspondingly arranged on inlet flange and exhaust flange, the fixing plate extended in oriented second straight tube is set in described inlet flange, described fixing plate both sides are respectively arranged with semicircle acoustical panel, described semicircle acoustical panel is respectively hinged at the end of fixing plate, described semicircle acoustical panel is provided with extension spring with the side of fixing plate and is connected.
In a preferred embodiment of the present invention, the end of described first straight tube and the second straight tube is provided with annular slab and is connected and sealed.
In a preferred embodiment of the present invention, described semicircle acoustical panel includes two pieces of perforated boards and semicircle acoustical cotton respectively, and described semicircle acoustical cotton is arranged between two pieces of perforated boards.
In a preferred embodiment of the present invention, described two pieces of perforated boards are densely covered with micropore.
In a preferred embodiment of the present invention, the radius of described semicircle acoustical panel is less than the radius of the second straight tube endoporus.
The invention has the beneficial effects as follows: the elastic acoustic filter of a kind of variable cross section that the present invention points 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, time air-flow is little, semicircle acoustical panel resets under the effect of extension spring, reduces windage, and the adaptability of air-flow is good.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme in the embodiment of the present invention, below the accompanying drawing used required during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise 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 the present invention.
Detailed description of the invention
Technical scheme in the embodiment of the present invention will be clearly and completely described below, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments. Based on the embodiment in the present invention, all other embodiments that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
Referring to Fig. 1, the embodiment of the present invention 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, it is possible to noise when reducing air-flow by 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, connection for blower fan, trachea, the fixing plate 6 extended in oriented second straight tube 2 is set in described inlet flange 4, described fixing plate 6 both sides are respectively arranged with semicircle acoustical panel 8, described semicircle acoustical panel 8 is respectively hinged at the end of fixing plate 6, and described semicircle acoustical panel 8 is provided with extension spring 7 with the side of fixing plate 6 and is connected. When air-flow is big, semicircle acoustical panel 8 is outwards upset respectively, 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 the present invention points 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, and the adaptability of air-flow size is good, effectively reduces pneumatic noise.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every equivalent structure utilizing description of the present invention to make or equivalence flow process conversion; or directly or indirectly it is used in other relevant technical field, all in like manner include in the scope of patent protection of the present invention.
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, described second straight tube is densely covered with passage, the two ends of described second straight tube are correspondingly arranged on inlet flange and exhaust flange, the fixing plate extended in oriented second straight tube is set in described inlet flange, described fixing plate both sides are respectively arranged with semicircle acoustical panel, described semicircle acoustical panel is respectively hinged at the end of fixing plate, described semicircle acoustical panel is provided with extension spring with the side of fixing plate and is connected.
2. the elastic acoustic filter of variable cross section 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.
3. the elastic acoustic filter of variable cross section according to claim 1, it is characterised in that described semicircle acoustical panel includes two pieces of perforated boards and semicircle acoustical cotton respectively, and described semicircle acoustical cotton is arranged between two pieces of perforated boards.
4. the elastic acoustic filter of variable cross section according to claim 3, it is characterised in that be densely covered with micropore on described two pieces of perforated boards.
5. the elastic acoustic filter of variable cross section 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 |
|---|---|---|---|
| CN201610167144.5A CN105673575A (en) | 2016-03-23 | 2016-03-23 | Variable-section elastic silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610167144.5A CN105673575A (en) | 2016-03-23 | 2016-03-23 | Variable-section elastic silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105673575A true CN105673575A (en) | 2016-06-15 |
Family
ID=56311553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610167144.5A Pending CN105673575A (en) | 2016-03-23 | 2016-03-23 | Variable-section elastic silencer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105673575A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112096297A (en) * | 2020-08-25 | 2020-12-18 | 山东省地矿工程勘察院 | Noise reduction device for drilling machine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB190600165A (en) * | 1905-03-30 | 1906-08-02 | John Mcdonald Porter | Improvements in Exhaust Mufflers. |
| SU1245728A1 (en) * | 1984-07-05 | 1986-07-23 | Всесоюзный нефтяной научно-исследовательский институт по технике безопасности | Exhaust silencer |
| CN201666173U (en) * | 2010-04-20 | 2010-12-08 | 重庆大学 | Exhaust muffler capable of adjusting flow area automatically |
| CN203271870U (en) * | 2013-05-20 | 2013-11-06 | 常州市星龙金属结构件有限公司 | Efficient automobile silencer |
| CN205423343U (en) * | 2016-03-23 | 2016-08-03 | 苏州弗士曼精密机械有限公司 | But elasticity silencer of variable cross section |
-
2016
- 2016-03-23 CN CN201610167144.5A patent/CN105673575A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB190600165A (en) * | 1905-03-30 | 1906-08-02 | John Mcdonald Porter | Improvements in Exhaust Mufflers. |
| SU1245728A1 (en) * | 1984-07-05 | 1986-07-23 | Всесоюзный нефтяной научно-исследовательский институт по технике безопасности | Exhaust silencer |
| CN201666173U (en) * | 2010-04-20 | 2010-12-08 | 重庆大学 | Exhaust muffler capable of adjusting flow area automatically |
| CN203271870U (en) * | 2013-05-20 | 2013-11-06 | 常州市星龙金属结构件有限公司 | Efficient automobile silencer |
| CN205423343U (en) * | 2016-03-23 | 2016-08-03 | 苏州弗士曼精密机械有限公司 | But elasticity silencer of variable cross section |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112096297A (en) * | 2020-08-25 | 2020-12-18 | 山东省地矿工程勘察院 | Noise reduction device for drilling machine |
| CN112096297B (en) * | 2020-08-25 | 2022-03-11 | 山东省地矿工程勘察院 | Noise reduction device for drilling machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160615 |