CN200945451Y - Eliminating noise-leakage structure for coal mill sound insulation cover column and sound insulating element - Google Patents
Eliminating noise-leakage structure for coal mill sound insulation cover column and sound insulating element Download PDFInfo
- Publication number
- CN200945451Y CN200945451Y CN 200620136807 CN200620136807U CN200945451Y CN 200945451 Y CN200945451 Y CN 200945451Y CN 200620136807 CN200620136807 CN 200620136807 CN 200620136807 U CN200620136807 U CN 200620136807U CN 200945451 Y CN200945451 Y CN 200945451Y
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- absorbing material
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- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The utility model discloses an eliminating noise-leakage structure for coal mill sound insulation cover column and sound insulating element, which comprises a plurality of connection plates fixed with a nut, a shock absorbing cushion, a bolt, an outer package plate, a damping material layer, a sound absorbing material layer and a sealing bar. A vertical pole is fixed on the connection plate by the bolt. The shock absorbing cushion is arranged between the column and the connection plate. The circumference of the column is provided with the sound absorbing material layer. The surface of the sound absorbing material layer is provided with a metal protection net. The outer package plate is arranged outside the sound absorbing material layer, the vertical pole and the connection plate. Two ends of the outer package plate and the connection plate are fixed together. The damping material layer is smeared on the inner wall of the outer package plate. The sealing bar is fixed on the connecting corner between the outer package plate and a sound insulation element. The utility model can reduce the sound leakage between the column and the sound insulation element to a great extent, the noise of which is reduced less than 88 decibel, thereby reaching the national standard requirement for noise control.
Description
One, affiliated technical field:
The utility model belongs to a kind of structure of eliminating column with the sound insulation element leakage sound of coal pulverizer acoustic hood.
Two, background technology:
Existing coal pulverizer acoustic hood is made up of sound insulation element and steel bracket, steel bracket is made up of column and beam, leakage sound between its column and the sound insulation element is people's an open questions all the time, mainly be to adopt some sound-absorbing materials of plug in the slit that between sound insulation element and column, can see in the prior art, the method of one deck iron sheet is wrapped in the outside, though this method can be isolated the sub-fraction noise on principle, but be connected firmly because of adopting between iron sheet and sound insulation element and the column, can make the hot-tempered change of tune big because of overhead speaker is transaudient, so, after adding these structure members, its leakage sound still can not be resolved, the noise of entire equipment is not controlled in the standard of country's permission still greater than 90 decibels.
Three, summary of the invention:
The utility model is exactly to solve now with the problems referred to above that exist in the technology, and a kind of structure that can reduce elimination coal pulverizer acoustic hood column with the sound insulation element leakage sound of the leakage sound between column and the sound insulation element significantly is provided.
For addressing the above problem, technical solution of the present utility model is: a kind of structure of eliminating coal pulverizer acoustic hood column and sound insulation element leakage sound, and it comprises the many connecting plate, beam, bolt, skin plating, damping material layer, sound-absorbing material layer and the sealing strips that are fixed with nut; Column with connecting plate on the corresponding position of nut have bolt hole, it is fixed on connecting plate and the nut by the bolt and spring washer sheet, be lined with beam between column and the connecting plate, be surrounded by one deck sound-absorbing material layer around the column, the sound-absorbing material laminar surface is fixed with the metal protecting wire net, one skin plating is arranged outside sound-absorbing material layer, column and connecting plate, the two ends of skin plating and connecting plate are fixed together, between skin plating and column, the connecting plate air layer is arranged, the skin plating inwall scribbles the damping material layer, and skin plating is fixed with sealing strip with the corner that is connected of sound insulation element.
Column of the present utility model is rolled in sound-absorbing material layer, damping material layer and the air layer, skin plating is fixed with sealing strip with the corner that is connected of sound insulation element, noise is under the obstruct of several different methods, be difficult for again by leaking in the slit between column and the sound insulation element, between column and the connecting plate for being flexible coupling, no longer include the transaudient phenomenon of overhead speaker, so, adopt coal pulverizer acoustic hood of the present utility model can reduce column and the leakage sound of sound insulation between the element significantly, its noise has been reduced to below 88 decibels, has reached the standard-required of country to noise abatement.
Four, description of drawings
Below in conjunction with accompanying drawing the utility model is further described:
Fig. 1 is the utility model cross-sectional view.
Five, the specific embodiment
As shown in Figure 1, present embodiment comprises that many root beads are connected to the connection steel plate 11 of nut 6, damping rubber cushion 8, bolt 5, encased steel plate 10, damping material layer 9, sound-absorbing material layer 3 and sealing joint strip 2; Sound-absorbing material layer 3 is the super glass wool sound-absorbing material layer, column 7 be connected steel plate 11 on nut 6 corresponding positions have bolt hole, it is fixed on by bolt 5 and spring shim and is connected on steel plate 11 and the nut 6, column 7 is lined with damping rubber cushion 8 with being connected between the steel plate 11, be surrounded by one deck super glass wool sound-absorbing material layer 3 around the column 7, super glass wool sound-absorbing material layer 3 surfaces are fixed with metal protecting wire net 4, at super glass wool sound-absorbing material layer 3, column 7 be connected that steel plate 11 is outer an encased steel plate 10, encased steel plate 10 welds together with the two ends that are connected steel plate 11, encased steel plate 10 and column 7, connect between the steel plate 11 air layer 12 is arranged, encased steel plate 10 inwalls scribble damping material layer 9, and encased steel plate 10 is fixed with sealing joint strip 2 with the corner that is connected of sound insulation element 1.Connect steel plate 11 and also scribble damping material layer 9 in junction with sound-absorbing material layer 3.
Claims (2)
1, a kind of structure of eliminating coal pulverizer acoustic hood column and sound insulation element leakage sound, it is characterized in that: it comprises the many connecting plate, beam, bolt, skin plating, damping material layer, sound-absorbing material layer and the sealing strips that are fixed with nut; Column with connecting plate on the corresponding position of nut have bolt hole, it is fixed on connecting plate and the nut by the bolt and spring washer sheet, be lined with beam between column and the connecting plate, be surrounded by one deck sound-absorbing material layer around the column, the sound-absorbing material laminar surface is fixed with the metal protecting wire net, one skin plating is arranged outside sound-absorbing material layer, column and connecting plate, the two ends of skin plating and connecting plate are fixed together, between skin plating and column, the connecting plate air layer is arranged, the skin plating inwall scribbles the damping material layer, and skin plating is fixed with sealing strip with the corner that is connected of sound insulation element.
2, the structure of elimination coal pulverizer acoustic hood column according to claim 1 and sound insulation element leakage sound, it is characterized in that: described connection steel plate (11) scribbles damping material layer (9) in the junction with sound-absorbing material layer (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620136807 CN200945451Y (en) | 2006-09-10 | 2006-09-10 | Eliminating noise-leakage structure for coal mill sound insulation cover column and sound insulating element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620136807 CN200945451Y (en) | 2006-09-10 | 2006-09-10 | Eliminating noise-leakage structure for coal mill sound insulation cover column and sound insulating element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200945451Y true CN200945451Y (en) | 2007-09-12 |
Family
ID=38732512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620136807 Expired - Fee Related CN200945451Y (en) | 2006-09-10 | 2006-09-10 | Eliminating noise-leakage structure for coal mill sound insulation cover column and sound insulating element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200945451Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102855871A (en) * | 2011-07-01 | 2013-01-02 | 湖北省风机厂有限公司 | Sound insulation equipment |
| CN104001608A (en) * | 2014-05-19 | 2014-08-27 | 江西理工大学 | Sound insulation device suitable for coal mill and method |
| CN112683539A (en) * | 2020-12-15 | 2021-04-20 | 中航工程集成设备有限公司 | Exhaust metal runner structure for aircraft engine test |
-
2006
- 2006-09-10 CN CN 200620136807 patent/CN200945451Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102855871A (en) * | 2011-07-01 | 2013-01-02 | 湖北省风机厂有限公司 | Sound insulation equipment |
| CN104001608A (en) * | 2014-05-19 | 2014-08-27 | 江西理工大学 | Sound insulation device suitable for coal mill and method |
| CN112683539A (en) * | 2020-12-15 | 2021-04-20 | 中航工程集成设备有限公司 | Exhaust metal runner structure for aircraft engine test |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Han Dengcai Document name: Notification of Termination of Patent Right |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070912 Termination date: 20091012 |