CN202394523U - Noise reduction barrier used for noise control of coal cleaning plant - Google Patents
Noise reduction barrier used for noise control of coal cleaning plant Download PDFInfo
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- CN202394523U CN202394523U CN201120543134XU CN201120543134U CN202394523U CN 202394523 U CN202394523 U CN 202394523U CN 201120543134X U CN201120543134X U CN 201120543134XU CN 201120543134 U CN201120543134 U CN 201120543134U CN 202394523 U CN202394523 U CN 202394523U
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- noise
- noise reduction
- reduction barrier
- cleaning plant
- acoustic screen
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Abstract
The utility model provides a noise reduction barrier used for noise control of a coal cleaning plant. The noise reduction barrier used for noise control of the coal cleaning plant comprises a noise reduction barrier frame, wherein the noise reduction barrier frame is formed by welding of zinc plated keels, a perforation plate is fixed inside the noise reduction barrier frame, an external panel is fixed outside the noise reduction barrier frame, and sound absorption cotton wrapped with alkali-free glass wool cloth is filled between the perforation plate and the external panel. The noise reduction barrier is arranged at the periphery of a vibrating screen and a crushing machine in the coal cleaning plant, thus noise sources are separated from other parts of a workshop, and the aim of reducing noise is achieved. By adopting the noise reduction barrier disclosed by the utility model, noise is actively reduced on the noise sources, transmission ways of vibration and noise are blocked in a transmission route, noise environment of the coal cleaning plant is obviously improved, and the noise reduction barrier disclosed by the utility model plays an important role in occupational health protection of employees.
Description
Technical field
The utility model relates to noise processed equipment, specifically is a kind of acoustic screen.
Background technology
According to the actual measurement and the analysis of coal washery, the source of its noise maximum is at vibratory screening apparatus and disintegrating machine, and the position that vibratory screening apparatus produces noise mainly contains sieve plate, screen frame, vibrator, support spring etc., is main with mechanical noise and impact noise.Noisiness depends primarily on Structure of Vibrating Screen, compass screen surface type, the granularity of sieving material and hardness etc., generally is low, intermediate frequency broadband character.The noise of vibratory screening apparatus increases with the increase of vibration frequency and amplitude, and noise constitutes complicated.The disintegrating machine noise is when broken material, because bump produces elastic deformation with squeezing action, causes the whole machine body vibration and the noise of generation mainly comprise impact noise and mechanical noise, and material also produces the noise of certain intensity in shattering process.A large amount of steel frame constructions that adopt in the coal washery, sound through the steel frame construction conduction, form resonance, and the steel frame construction acoustically effective is poor easily, and the noise of coal washery has brought serious occupational hazards to the Manufacturing Worker.
For the worker is exposed in the strong environment of noise as much as possible less, adopt the way that the overriding noise source is suitably isolated to come noise reduction.Partiting sound members such as general using plank, sheet metal, body of wall, acoustic hood are separated noise source and recipient, noise is received in the route of transmission stop to weaken the transmission of noise.But in the noise circumstance of coal washery, these partiting sound members that use at present can not play good defening effect.
Summary of the invention
The purpose of the utility model provides a kind of acoustic screen that is used for coal washery noise control, and this acoustic screen can improve sound insulation efficient effectively.
For realizing above-mentioned purpose, the technical scheme that the utility model adopts is:
A kind of acoustic screen that is used for coal washery noise control; Comprise the acoustic screen framework, the acoustic screen framework is welded by zinc-plated keel, is fixed with perforated plate in the inboard of acoustic screen framework; The outside is fixed with outer panels, between perforated plate and outer panels, is filled with the acoustical cotton with alkali-free glass wool cloth parcel.Install described acoustic screen around vibratory screening apparatus in the coal washery and the disintegrating machine, noise source and workshop remainder are separated by, reach the purpose that reduces noise.
Adopt the described acoustic screen of the utility model, active noise reduction on noise source, the defeated approach of blocking-up vibration and noise has significantly improved the noise circumstance of coal washery from the route of transmission, and protection has important role to employee's occupational health.
Description of drawings
Fig. 1 is the structural representation of the utility model; Fig. 2 is the A-1 enlarged drawing among Fig. 1.
Among the figure, 1-acoustic screen framework, 2-perforated plate, 3-outer panels, 4-acoustical cotton, 5-damping lacquer, universal quiet wheel of 6-.
Embodiment
Below in conjunction with accompanying drawing the utility model is done and to be specified.
The described a kind of acoustic screen that is used for coal washery noise control of the utility model; Comprise acoustic screen framework 1; Acoustic screen framework 1 is welded by zinc-plated keel; Be fixed with perforated plate 2 in the inboard of acoustic screen framework 1, the outside is fixed with outer panels 3, between perforated plate 2 and outer panels 3, is filled with the acoustical cotton 4 with alkali-free glass wool cloth parcel.The pore size of perforated plate 2 and punching rate are decided according to the noisiness that equipment operation produces, and the resonant frequency that makes perforated plate 2 is to greatest extent near the noise frequency that needs to administer, to arrive good acoustically effective.Its punching rate does not generally surmount 20%.
All scribble the damping lacquer 5 that thickness is 2mm on acoustic screen framework zinc-plated keel surface and outer panels surface.The effect of damping lacquer 5 is that the energy with mechanical vibration and acoustic vibration changes thermal dissipation into and falls, thereby reaches transmission and the diffusion of vibration-absorbing and silencing purpose with the realization noise.
The thickness of acoustical cotton 4 is 60mm.Be to increase the sound sucting band width of perforated plate, fill the acoustical cotton with alkali-free glass wool cloth parcel at the perforated plate reverse side, and the arrival certain thickness, it is thick to be generally 60mm.Parameters such as the density of acoustical cotton, fibre diameter are also selected according to noisiness, and it is maximum that acoustical cotton is arrived this frequency range noise acoustical absorption coefficient.
Acoustic screen framework bottom is equipped with and is universally quietly taken turns 6.Quiet universal wheel is equipped with in acoustic screen bottom, move light and handy quick so that can acoustic screen be moved during ME.
Claims (4)
1. one kind is used for the acoustic screen that the coal washery noise is controlled; Comprise acoustic screen framework (1); It is characterized in that: acoustic screen framework (1) is welded by zinc-plated keel; Be fixed with perforated plate (2) in the inboard of acoustic screen framework (1), the outside is fixed with outer panels (3), between perforated plate (2) and outer panels (3), is filled with the acoustical cotton (4) with alkali-free glass wool cloth parcel.
2. the acoustic screen that is used for coal washery noise control according to claim 1 is characterized in that: all scribble the damping lacquer (5) that thickness is 2mm on acoustic screen framework zinc-plated keel surface and outer panels surface.
3. the acoustic screen that is used for coal washery noise control according to claim 1, it is characterized in that: the thickness of acoustical cotton (4) is 60mm.
4. the acoustic screen that is used for coal washery noise control according to claim 1, it is characterized in that: universal quiet wheel the (6) is equipped with in acoustic screen framework bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120543134XU CN202394523U (en) | 2011-12-22 | 2011-12-22 | Noise reduction barrier used for noise control of coal cleaning plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120543134XU CN202394523U (en) | 2011-12-22 | 2011-12-22 | Noise reduction barrier used for noise control of coal cleaning plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202394523U true CN202394523U (en) | 2012-08-22 |
Family
ID=46669430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120543134XU Expired - Fee Related CN202394523U (en) | 2011-12-22 | 2011-12-22 | Noise reduction barrier used for noise control of coal cleaning plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202394523U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108086506A (en) * | 2018-01-15 | 2018-05-29 | 上海建工四建集团有限公司 | A kind of modularization movable type sound arrester and its application method |
| CN108252429A (en) * | 2018-01-15 | 2018-07-06 | 上海建工四建集团有限公司 | A kind of movable type acoustic hood and its application method |
-
2011
- 2011-12-22 CN CN201120543134XU patent/CN202394523U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108086506A (en) * | 2018-01-15 | 2018-05-29 | 上海建工四建集团有限公司 | A kind of modularization movable type sound arrester and its application method |
| CN108252429A (en) * | 2018-01-15 | 2018-07-06 | 上海建工四建集团有限公司 | A kind of movable type acoustic hood and its application method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120822 Termination date: 20131222 |