CN204402633U - A kind of adjustable silencing apparatus - Google Patents
A kind of adjustable silencing apparatus Download PDFInfo
- Publication number
- CN204402633U CN204402633U CN201520052085.8U CN201520052085U CN204402633U CN 204402633 U CN204402633 U CN 204402633U CN 201520052085 U CN201520052085 U CN 201520052085U CN 204402633 U CN204402633 U CN 204402633U
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- CN
- China
- Prior art keywords
- silencing apparatus
- sliding bar
- apparatus shell
- shell
- anechoic
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- Expired - Fee Related
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Abstract
The utility model belongs to silencing apparatus field, fix for existing silencing apparatus frequency cannot regulate and the adjustable silencing apparatus of a kind of frequency of noise elimination provided, comprise silencing apparatus shell, silencing apparatus shell has air passageways, two fixing rods are provided with in air passageways in silencing apparatus shell, the two end part of two fixing rods are all connected on silencing apparatus shell, many sliding bars are connected with between two fixing rods, sliding bar runs through fixing rod and silencing apparatus shell is arranged, and an adjusting knob is connected on the position that sliding bar is positioned at beyond silencing apparatus shell, sliding bar is connected with anechoic sheet, sliding bar has outside thread, anechoic sheet is threaded on sliding bar.Anechoic sheet reduced diameter or increase gradually from left to right, and adjacent two anechoic sheets are install in the other direction.The utility model silencing apparatus by regulating the position of anechoic sheet in silencing apparatus, thus regulates the sectional area size of air passageways, expands silencing apparatus frequency of noise elimination scope, improves sound deadening capacity.
Description
Technical field
The utility model belongs to silencing apparatus field, particularly relates to a kind of adjustable silencing apparatus.
Background technique
Baffler is a kind of device stoping sound transmission and allow air-flow to pass through, and is the important measures eliminating air power noise.The device of the reduction noise on the air-flow path that baffler is mounted in air powered equipment (equipment as larger in relief opening noises such as blower, air compressor, boiler exhaust mouth, generator, water pumps) or in inlet and exhaust system.
The kind of baffler is a lot, but studies carefully its noise elimination mechanism, they can be divided into six kinds of main types, i.e. resistive muffler, resistant noise-reducing device, impedance complex formula baffler, microperforated panel baffler, aperture baffler and active baffler again.Dissipative muffler can be divided into straighttube-type, chip, honeycomb, folded plate type harmony streaming etc. according to its structure.Strip-type silencer is a kind of dissipative muffler of extensive use, and it relates to theory maturation, has the advantages such as sound deadening capacity is high, parameter easily controls, construct simple, material price is cheap.
The structural type of silencing apparatus sound deadening capacity and silencing apparatus, the shape of air passageways transverse section and area, airspeed, silencing apparatus length, and the factor such as the kind of sound-absorbing material, density, thickness is relevant, protection slab material and pattern thereof also have a significant impact soundproof effect.A silencing apparatus finished product, each factor (size, sound-absorbing material kind, density etc. of silencing apparatus length, air passageways cross section) is determined value, its sound deadening capacity and main frequency of noise elimination are fixed, and when noise frequency or noise figure change, silencing apparatus actual effect will be had a greatly reduced quality.
Model utility content
The purpose of this utility model fixes for existing silencing apparatus frequency cannot regulate and the adjustable silencing apparatus of a kind of frequency of noise elimination provided.
The utility model is achieved by the following technical solution:
A kind of adjustable silencing apparatus, comprise silencing apparatus shell, silencing apparatus shell has air passageways, two fixing rods are provided with in air passageways in silencing apparatus shell, the two end part of two fixing rods are all connected on silencing apparatus shell, many sliding bars are connected with between two fixing rods, sliding bar runs through fixing rod and silencing apparatus shell is arranged, and an adjusting knob is connected on the position that sliding bar is positioned at beyond silencing apparatus shell, sliding bar is connected with anechoic sheet, sliding bar has outside thread, and anechoic sheet is threaded on sliding bar.
Described anechoic sheet reduced diameter or increase gradually from left to right, and adjacent two anechoic sheets are install in the other direction.
Arranged in parallel between described each sliding bar.
Described silencing apparatus shell and anechoic sheet all adopt sound absorption module to form, and described sound absorption module comprises galvanized steel plain sheet internal layer, absorbent treatment and zinc-plated perforated plate skin and forms, and absorbent treatment is formed by the glass cotton outsourcing glass-fiber-fabric that absorbs sound.
The beneficial effects of the utility model: the utility model silencing apparatus by regulating the position of anechoic sheet in silencing apparatus, thus regulates the sectional area size of air passageways, expand silencing apparatus frequency of noise elimination scope, improve sound deadening capacity.
Accompanying drawing explanation
Fig. 1 is plan view of the present utility model.
Fig. 2 is the sectional view in Figure 1A-A direction.
Fig. 3 is the schematic diagram that the utility model noise damping channel area is adjusted to maximum rating.
Fig. 4 is the schematic diagram that the utility model noise damping channel area is adjusted to minimum state.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail.
Embodiment
As Figure 1-Figure 4, a kind of adjustable silencing apparatus, comprise silencing apparatus shell 1, silencing apparatus shell 1 has air passageways, two fixing rods 4 are provided with in air passageways in silencing apparatus shell 1, the two end part of two fixing rods 4 are all connected on silencing apparatus shell 1, many sliding bars 2 are connected with between two fixing rods 4, sliding bar 2 runs through fixing rod 4 and silencing apparatus shell 1 is arranged, and an adjusting knob 5 is connected on the position that sliding bar 2 is positioned at beyond silencing apparatus shell 1, sliding bar 2 is connected with anechoic sheet 3, sliding bar 2 has outside thread, anechoic sheet 3 is threaded on sliding bar 2.Described anechoic sheet 3 reduced diameter or increase gradually from left to right, and adjacent two anechoic sheets 3 are install in the other direction.Arranged in parallel between described each sliding bar 2.Described silencing apparatus shell 1 and anechoic sheet 3 all adopt sound absorption module to form, and described sound absorption module comprises galvanized steel plain sheet internal layer, absorbent treatment and zinc-plated perforated plate skin and forms, and absorbent treatment is formed by the glass cotton outsourcing glass-fiber-fabric that absorbs sound.
The anechoic sheet (internal sheet) of the utility model strip-type silencer is adjustable anechoic sheet, by the adjusting knob of silencing apparatus side, can regulate the position of anechoic sheet on sliding bar, thus changes the sectional area size of air passageways.In each passage that cross section is different, the initial frequency that can effectively eliminate the noise is just different, so when other conditions are identical, the air passageways sectional area needed for each frequency band is different.Therefore, we according to the difference of the noise frequency of equipment in actual conditions, can select different sectional areas, thus reach the effect that a silencing apparatus can solve different frequency noise, increase the scope of silencing apparatus frequency of noise elimination.
Compound sound absorption module is as the sound insulating material of denoising device, the sound absorption principle of this compound sound absorption module is: under wideband sound wave effect, medium, high frequency sound wave enters porous fibre sound-absorbing material by the cavity of protection slab, due to porous fibre sound-absorbing material have a large amount of inside and outside be communicated with micro-pore and hole, when on sound wave incident to this material, sound wave can enter material internal along hole, causes the vibration of air molecule in space.Due to the viscous resistance of air and the friction of air molecule and pore wall, acoustic energy is converted into heat energy and loss.The type material has good sound absorbing capabilities to medium, high frequency.The sheet metal and its elasticity of clogging below, the damping material that are suspended at framework centre constitute a mass-spring system, and under the effect of low frequency acoustic energy, vibrating plate will vibrate, and vibrational energy is passed to damping material and be converted into heat energy in damping material.By adjusting the elastic damping performance of the thickness of vibrating plate and elasticity, damping material, good low frequency absorption performance just can be obtained.Therefore this compound sound absorption module can obtain higher noise insulation factor within the scope of 100-8000hz, and a kind of blower fan wide-band noise reducing device of the utility model can absorb largely, isolate medium and low frequency volume, and noise insulation factor is good.
More than show and describe basic principle of the present utility model, major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope, simple change and the replacement of those ordinary skill in the art are all within protection domain of the present utility model.
Claims (4)
1. an adjustable silencing apparatus, it is characterized in that: comprise silencing apparatus shell, silencing apparatus shell has air passageways, two fixing rods are provided with in air passageways in silencing apparatus shell, the two end part of two fixing rods are all connected on silencing apparatus shell, many sliding bars are connected with between two fixing rods, sliding bar runs through fixing rod and silencing apparatus shell is arranged, and an adjusting knob is connected on the position that sliding bar is positioned at beyond silencing apparatus shell, sliding bar is connected with anechoic sheet, sliding bar has outside thread, and anechoic sheet is threaded on sliding bar.
2. the adjustable silencing apparatus of one according to claim 1, is characterized in that: described anechoic sheet reduced diameter or increase gradually from left to right, and adjacent two anechoic sheets are install in the other direction.
3. the adjustable silencing apparatus of one according to claim 1 and 2, is characterized in that: arranged in parallel between described each sliding bar.
4. the adjustable silencing apparatus of one according to claim 3, it is characterized in that: described silencing apparatus shell and anechoic sheet all adopt sound absorption module to form, described sound absorption module comprises galvanized steel plain sheet internal layer, absorbent treatment and zinc-plated perforated plate skin and forms, and absorbent treatment is formed by the glass cotton outsourcing glass-fiber-fabric that absorbs sound.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520052085.8U CN204402633U (en) | 2015-01-26 | 2015-01-26 | A kind of adjustable silencing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520052085.8U CN204402633U (en) | 2015-01-26 | 2015-01-26 | A kind of adjustable silencing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204402633U true CN204402633U (en) | 2015-06-17 |
Family
ID=53426501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520052085.8U Expired - Fee Related CN204402633U (en) | 2015-01-26 | 2015-01-26 | A kind of adjustable silencing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204402633U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109036366A (en) * | 2018-09-20 | 2018-12-18 | 郑州静邦噪声振动控制工程技术有限公司 | Array type silencer and its special-shaped muffling unit |
| CN112253303A (en) * | 2020-09-07 | 2021-01-22 | 盐城市步高汽配制造有限公司 | Novel automobile exhaust emission pipe |
| CN114353395A (en) * | 2020-09-28 | 2022-04-15 | 青岛海尔电冰箱有限公司 | Refrigerating system, refrigerating equipment with refrigerating system and noise reduction method of refrigerating system |
-
2015
- 2015-01-26 CN CN201520052085.8U patent/CN204402633U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109036366A (en) * | 2018-09-20 | 2018-12-18 | 郑州静邦噪声振动控制工程技术有限公司 | Array type silencer and its special-shaped muffling unit |
| CN112253303A (en) * | 2020-09-07 | 2021-01-22 | 盐城市步高汽配制造有限公司 | Novel automobile exhaust emission pipe |
| CN112253303B (en) * | 2020-09-07 | 2022-02-15 | 盐城市步高汽配制造有限公司 | Novel automobile exhaust emission pipe |
| CN114353395A (en) * | 2020-09-28 | 2022-04-15 | 青岛海尔电冰箱有限公司 | Refrigerating system, refrigerating equipment with refrigerating system and noise reduction method of refrigerating system |
| CN114353395B (en) * | 2020-09-28 | 2023-10-24 | 青岛海尔电冰箱有限公司 | Refrigerating system, refrigerating equipment with refrigerating system and noise reduction method of refrigerating 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 |
Granted publication date: 20150617 Termination date: 20190126 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |