CN2262459Y - Novel damping noise reduction device of coal mill - Google Patents
Novel damping noise reduction device of coal mill Download PDFInfo
- Publication number
- CN2262459Y CN2262459Y CN 96214693 CN96214693U CN2262459Y CN 2262459 Y CN2262459 Y CN 2262459Y CN 96214693 CN96214693 CN 96214693 CN 96214693 U CN96214693 U CN 96214693U CN 2262459 Y CN2262459 Y CN 2262459Y
- Authority
- CN
- China
- Prior art keywords
- heat
- sound
- sound insulation
- coal pulverizer
- noise
- 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
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- Crushing And Grinding (AREA)
Abstract
The utility model belongs to the technical field of crushing and grinding machinery, and is characterized in that a damping sound insulation layer made of heat-resistant high-elasticity material and a heat-preservation sound absorption layer made of heat-preservation sound absorption material are arranged on a cylinder body according to the noise frequency generated by the impact of steel balls in the cylinder body when a coal mill works; the outmost layer is fixed by a totally-enclosed heat-preservation sound-insulation steel cover, and a heat-preservation sound-absorption layer and an outer totally-enclosed heat-preservation sound-insulation steel cover are arranged on the upper end cover of the barrel. The utility model has the characteristics of simple structure, maintenance convenience, but actual noise reduction 16-17dB satisfies and is less than 90dB from mill barrel 1.5m department noise.
Description
The utility model belongs to brokenly grinding machine tool technical field, mainly proposes a kind of novel damping noise-reducing device of coal pulverizer.
As everyone knows, be filled with the steel ball medium in the coal pulverizer cylindrical shell, in cylindrical shell when work, rotate and drive steel ball and make cast and decline movement and produce noise about 110dB, pollutes working environment, influences staff's physical and mental health, can not satisfy national requirements for environmental protection.Because coal pulverizer cylindrical shell appearance and size is big, be in rotation status during work again, to its in addition noise reduction to transform difficulty bigger, the fine solution of always failing for a long time to obtain of this problem.
The purpose of this utility model promptly provides a kind of novel damping noise-reducing device of coal pulverizer, makes it have the good and characteristic of simple structure of noise reduction.
The utility model is finished the technical scheme that its invention task takes: when working according to coal pulverizer in the cylindrical shell steel ball impact the frequency noise that produces, the damping noise-reducing device is by the damping sound insulation layer that is made of the high-elasticity refractory acoustic material that is arranged on the coal pulverizer barrel outer surface, is arranged on the heat-insulating and sound-absorbing layer and the outermost Totally enclosed heat-preserving sound insulation steel cage that are made of the heat-insulating and sound-absorbing material on the damping sound insulation layer and heat-insulating and sound-absorbing layer and the outer field Totally enclosed heat-preserving sound insulation steel cage that is arranged on the cylindrical shell upper end cover and constitutes.
Damping sound insulation layer as innermost layer can be made of the high-elasticity refractory rubber slab, the heat-insulating and sound-absorbing layer at middle part can be good toughness, is convenient to the porous industrial felt of installation and maintenance, outer totally-enclosed blimp can be made of rigid material, calculate through the noise reduction sound-absorbing, selecting the thickness of damping sound insulation layer is 6-10mm, and sound absorbing layer thickness is 40-80mm.
The frequency noise design that the steel ball impact produced in the cylindrical shell when damping noise-reducing device that the utility model proposes was worked according to coal pulverizer, have characteristics simple in structure, easy to maintenance, whole device and grinding mill barrel one are also rotated with cylindrical shell, do not influence the operate as normal and the maintenance of coal pulverizer, the utility model device noise reduction is better, can actually reduce noise 16-17dB, the satisfied noise that moves from grinding mill barrel 1.5m place is less than 90dB.
Accompanying drawing 1 is the utility model structural representation.
Structure as shown in Figure 1, be bonded with the damping sound insulation layer 5 that the high-elasticity refractory rubber slab constitutes at coal pulverizer cylindrical shell 4 outer surfaces, outside the damping sound insulation layer 5 is by good toughness, the heat-insulating and sound-absorbing layer 6 that durable porous industrial felt constitutes, outermost layer is fixed with totally-enclosed sound insulation steel cage 7, totally-enclosed steel cage 7 is segmental structure on cylindrical shell, the centre is fixed with bolt 8, the upper end cover 1 of cylindrical shell 4 is provided with the heat-insulating and sound-absorbing layer 6 that is made of the porous industrial felt, outermost is fixing with Totally enclosed heat-preserving sound insulation steel cage 7, between the totally-enclosed cover 7 on the cylindrical shell 4 on totally-enclosed cover 7 and the upper end cover 1 transition cover 3 is set, it can be rigid material equally and makes.
Consider to install change the needs of cylindrical shell interior lining panel, give on the denoising device of cylindrical shell and leave the fixedly hole of lining-plate bolt, i.e. puigging, sound absorbing layer and cover on the bolt place outward and all leave bolt hole are with this feasible just replaceable liner plate of this device of need not dismantling.
Claims (4)
1, the novel damping noise-reducing device of a kind of coal pulverizer, of the present utility model being characterised in that by the damping sound insulation layer (5) that is made of the high-elasticity refractory acoustic material that is arranged on coal pulverizer cylindrical shell (4) outer surface is arranged on the heat-insulating and sound-absorbing layer (6) and the outermost Totally enclosed heat-preserving sound insulation steel cage (7) that are made of the heat-insulating and sound-absorbing material on the damping sound insulation layer (5) and heat-insulating and sound-absorbing layer (6), the outer field Totally enclosed heat-preserving sound insulation steel cage (7) that is arranged on cylindrical shell (4) upper end cover (1) and constitutes.
2, the novel damping noise-reducing device of coal pulverizer according to claim 1 is characterized in that cylindrical shell (4) outermost Totally enclosed heat-preserving sound insulation steel cage (7) is a segmental structure, and is middle with bolt (8) connection.
3, the novel damping noise-reducing device of coal pulverizer according to claim 1 and 2 is characterized in that damping sound insulation layer (5) thickness of internal layer is 6-10mm.
4, the novel damping noise-reducing device of coal pulverizer according to claim 1 and 2, the thickness that it is characterized in that heat-insulating and sound-absorbing layer (6) is 40-80mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96214693 CN2262459Y (en) | 1996-06-07 | 1996-06-07 | Novel damping noise reduction device of coal mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96214693 CN2262459Y (en) | 1996-06-07 | 1996-06-07 | Novel damping noise reduction device of coal mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2262459Y true CN2262459Y (en) | 1997-09-17 |
Family
ID=33896728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96214693 Expired - Fee Related CN2262459Y (en) | 1996-06-07 | 1996-06-07 | Novel damping noise reduction device of coal mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2262459Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100384536C (en) * | 2001-10-05 | 2008-04-30 | 爱默生电气公司 | Reduced noise food waste disposer |
| CN103920568A (en) * | 2014-05-07 | 2014-07-16 | 苏州皇森机电科技有限公司 | Efficient muting ball mill |
| CN103934085A (en) * | 2014-04-23 | 2014-07-23 | 张家港大塚化学有限公司 | Novel raw material crushing device |
| CN110665594A (en) * | 2019-09-13 | 2020-01-10 | 兰杰 | Cement grinding equipment with noise suppression function and enhanced grinding efficiency |
-
1996
- 1996-06-07 CN CN 96214693 patent/CN2262459Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100384536C (en) * | 2001-10-05 | 2008-04-30 | 爱默生电气公司 | Reduced noise food waste disposer |
| CN103934085A (en) * | 2014-04-23 | 2014-07-23 | 张家港大塚化学有限公司 | Novel raw material crushing device |
| CN103920568A (en) * | 2014-05-07 | 2014-07-16 | 苏州皇森机电科技有限公司 | Efficient muting ball mill |
| CN110665594A (en) * | 2019-09-13 | 2020-01-10 | 兰杰 | Cement grinding equipment with noise suppression function and enhanced grinding efficiency |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |