CN202261765U - Low-frequency noise silencing box - Google Patents
Low-frequency noise silencing box Download PDFInfo
- Publication number
- CN202261765U CN202261765U CN2011203629163U CN201120362916U CN202261765U CN 202261765 U CN202261765 U CN 202261765U CN 2011203629163 U CN2011203629163 U CN 2011203629163U CN 201120362916 U CN201120362916 U CN 201120362916U CN 202261765 U CN202261765 U CN 202261765U
- Authority
- CN
- China
- Prior art keywords
- shell
- gas outlet
- plate
- frequency noise
- fixed
- 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
Links
Landscapes
- Exhaust Silencers (AREA)
Abstract
The utility model discloses a low-frequency noise silencing box which comprises a shell, a gas inlet, a gas outlet and a baffle, wherein the shell comprises a wood middle-density plate, a glass silk floss and an orifice plate, the glass silk floss and the orifice plate are fixed at the inner side of the wood middle-density plate, the gas inlet and the gas outlet are both a round pipe with holes, a silencing steel wire is wound outside each round pipe, the baffle comprises a wood middle-density plate, a glass silk floss and an orifice plate, the gas inlet and the gas outlet are fixed to the shell, the other part of the shell is sealed, the baffle is arranged between the gas inlet and the gas outlet, and one end of the baffle is fixed to the shell. With the adoption of the technical scheme, the low-frequency noise can be effectively lowered.
Description
Technical field
The utility model relates to the stereo set technical field, relates in particular to a kind of low frequency noise Sound Attenuator.
Background technology
Low frequency noise control is the relatively part of difficulty of noise control always, because the high frequency noise wavelength is very short, high frequency noise chance barrier can be decayed, and far away or experience barrier can be decayed rapidly along with distance, and propagation distance is short.
And low frequency noise, wavelength is very long, successively decreases very slowly.It is few that low frequency noise is met the barrier decay, can the penetrate thing, and propagation distance is far away, and is big to the human influence.As: what the NOISE ON ENVIRONMENT that exhaust outlet sent such as roots blower, high-power generator group had the greatest impact is low frequency noise.
The utility model content
The purpose of the utility model is to propose a kind of low frequency noise Sound Attenuator, can reduce low frequency noise effectively.
For reaching this purpose, the utility model adopts following technical scheme:
A kind of low frequency noise Sound Attenuator; Comprise shell, air inlet, gas outlet and dividing plate, wherein shell comprises glass silk flosssilk wadding and the orifice plate that wooden medium-density plate is inboard with being fixed on wooden medium-density plate wooden partition, and air inlet and gas outlet all are pipes with holes; The outer noise reduction steel wire that twines of pipe; Dividing plate comprises wooden medium-density plate and the glass silk flosssilk wadding and the orifice plate that are fixed on wooden medium-density plate wooden partition both sides, and air inlet and gas outlet are fixed on shell, and other parts of shell seal; Dividing plate is between air inlet and gas outlet, and dividing plate one end is fixed on the shell.
Between air inlet and the gas outlet in vertical state.
Dividing plate is two dividing plates, and two dividing plates are parallel to each other, staggered being fixed on the shell.
Adopted the technical scheme of the utility model; Because the Sound Attenuator shell is the density board of wood materials, and, can acoustic wave energy be converted into heat energy at air inlet and place, gas outlet winding metal filter screen; Direction of sound propagation is repeatedly changed by dividing plate simultaneously, therefore eliminates most of low frequency noise.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment medium and low frequency noise Sound Attenuator.
Embodiment
Further specify the technical scheme of the utility model below in conjunction with accompanying drawing and through embodiment.
Fig. 1 is the structural representation of the utility model embodiment medium and low frequency noise Sound Attenuator.As shown in Figure 1, this low frequency noise Sound Attenuator comprises shell, air inlet 1, gas outlet 6 and two dividing plates.
Wherein shell comprises glass silk flosssilk wadding and the orifice plate 2 that wooden medium-density plate 3 is inboard with being fixed on wooden medium-density plate wooden partition; Air inlet and gas outlet all are pipes 5 with holes; The outer noise reduction steel wire 4 that twines of pipe, dividing plate comprises wooden medium-density plate 3 and the glass silk flosssilk wadding and the orifice plate 2 that are fixed on wooden medium-density plate wooden partition both sides.
Air inlet and gas outlet are fixed on shell, between air inlet and the gas outlet in vertical state.
Other parts of shell seal, and two dividing plates are parallel to each other, and between air inlet and gas outlet, dividing plate one end is staggered to be fixed on the shell, can repeatedly change the direction of propagation of noise.
For having exhaust requirements, producing the equipment (exhaust noise) of low frequency noise again; As: roots blower, high-power generator group; Can not need machine room be carried out noise reduction process after adopting this Sound Attenuator; Need not increase a lot of mufflers yet or increase pipeline and be used for reducing noise, can reduce the cost of machine room noise reduction significantly.
The above; Be merely the preferable embodiment of the utility model; But the protection range of the utility model is not limited thereto; Anyly be familiar with this technological people in the technical scope that the utility model disclosed, the variation that can expect easily or replacement all should be encompassed within the protection range of the utility model.Therefore, the protection range of the utility model should be as the criterion with the protection range of claim.
Claims (3)
1. a low frequency noise Sound Attenuator is characterized in that, comprises shell, air inlet, gas outlet and dividing plate; Wherein shell comprises glass silk flosssilk wadding and the orifice plate that wooden medium-density plate is inboard with being fixed on wooden medium-density plate wooden partition; Air inlet and gas outlet all are pipes with holes, the outer noise reduction steel wire that twines of pipe, and dividing plate comprises wooden medium-density plate and the glass silk flosssilk wadding and the orifice plate that are fixed on wooden medium-density plate wooden partition both sides; Air inlet and gas outlet are fixed on shell; Other parts of shell seal, and dividing plate is between air inlet and gas outlet, and dividing plate one end is fixed on the shell.
2. a kind of low frequency noise Sound Attenuator according to claim 1 is characterized in that, between air inlet and the gas outlet in vertical state.
3. a kind of low frequency noise Sound Attenuator according to claim 1 is characterized in that, dividing plate is two dividing plates, and two dividing plates are parallel to each other, staggered being fixed on the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203629163U CN202261765U (en) | 2011-09-26 | 2011-09-26 | Low-frequency noise silencing box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203629163U CN202261765U (en) | 2011-09-26 | 2011-09-26 | Low-frequency noise silencing box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202261765U true CN202261765U (en) | 2012-05-30 |
Family
ID=46122939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203629163U Expired - Fee Related CN202261765U (en) | 2011-09-26 | 2011-09-26 | Low-frequency noise silencing box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202261765U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106842783A (en) * | 2017-02-24 | 2017-06-13 | 苏州佳世达光电有限公司 | Electronic installation |
| CN107252809A (en) * | 2016-07-11 | 2017-10-17 | 惠柏新材料科技（上海）股份有限公司 | Vavuum pump gas outlet waste collection and the Composite Box of sound insulation |
| CN109882451A (en) * | 2019-03-12 | 2019-06-14 | 亿昇(天津)科技有限公司 | A kind of silencing means of magnetic suspension air blower emptying |
-
2011
- 2011-09-26 CN CN2011203629163U patent/CN202261765U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107252809A (en) * | 2016-07-11 | 2017-10-17 | 惠柏新材料科技（上海）股份有限公司 | Vavuum pump gas outlet waste collection and the Composite Box of sound insulation |
| CN106842783A (en) * | 2017-02-24 | 2017-06-13 | 苏州佳世达光电有限公司 | Electronic installation |
| CN109882451A (en) * | 2019-03-12 | 2019-06-14 | 亿昇(天津)科技有限公司 | A kind of silencing means of magnetic suspension air blower emptying |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202261765U (en) | Low-frequency noise silencing box | |
| CN104165255A (en) | Active-passive composite silencer for ventilation pipeline | |
| CN104805920A (en) | Noise elimination device for generator room | |
| CN102006531A (en) | Sound box structure | |
| CN204626680U (en) | Generator room noise eliminating silencer | |
| CN203286197U (en) | Active-passive composite silencer for ventilation pipeline | |
| CN207314568U (en) | A kind of efficiently middle low frequency absorption mechanism of substation | |
| CN201723280U (en) | Straight-pipe resistance muffler | |
| CN103711338A (en) | Ultra-silent diesel generating set machine room and noise control method | |
| CN203067061U (en) | Gasoline engine exhaust silencer | |
| CN203604023U (en) | Vacuum moisture-regaining tail gas silencer | |
| CN200964887Y (en) | Engine exhaust silencer | |
| CN202348379U (en) | U-type exhaust pipe silencer | |
| CN202866936U (en) | Micropore muffler | |
| CN201904889U (en) | Sound box structure | |
| CN202900376U (en) | Improved pressure swing adsorption nitrogen making machine silencer | |
| CN203271865U (en) | Efficient exhaust silencer | |
| CN202047880U (en) | Novel impedance composite silencer | |
| CN204783177U (en) | Diesel generating set silencer of discharging fume | |
| CN211507107U (en) | Gas discharge silencer for vacuum nitrogen-filled insect-killing sterilizing equipment | |
| CN204243498U (en) | A kind of silence switch station | |
| CN103423207A (en) | Silencing device | |
| CN203297164U (en) | Silencer | |
| CN201981810U (en) | Wall surface sound-absorption structure of test room of high-speed centrifugal fan | |
| CN202209199U (en) | Muffler |
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: 20120530 Termination date: 20140926 |
|
| EXPY | Termination of patent right or utility model |