CN201707910U - Sound insulating hood - Google Patents
Sound insulating hood Download PDFInfo
- Publication number
- CN201707910U CN201707910U CN2010201491864U CN201020149186U CN201707910U CN 201707910 U CN201707910 U CN 201707910U CN 2010201491864 U CN2010201491864 U CN 2010201491864U CN 201020149186 U CN201020149186 U CN 201020149186U CN 201707910 U CN201707910 U CN 201707910U
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- sound
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- source device
- hood
- acoustic
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Abstract
The utility model discloses a sound insulating hood with lighter structure and convenient utilization, which comprises a hood body arranged outside a sound source device. The hood body comprises a casing and a sound absorption layer connected onto the inner wall of the casing, the hood body is connected onto the sound source device via a vibration isolator, a silencing structure is mounted at the position of an open hole of the hood body, the silencing structure consists of a sound absorption tube, and sound absorption materials are lined on the inner wall of the silencing structure. If the hood body is in a split structure, sound absorption pads are arranged at spliced positions of all portions of the hood body. In addition, a damping layer is coated on the wall of the casing, and the outline of the hood body matches with that of the sound source device. The sound insulating hood has the advantages of light structure, larger rigidity, convenient installation and utilization, small standing wave effect of airborne sound inside the hood, little sound leakage and fine sound insulation effect, and is particularly suitable for being used as a sound insulating structure of a sound source device with larger vibration.
Description
Technical field
The utility model relates to a kind of acoustic hood that is used for noise reduction, especially a kind of acoustic hood that is used for the chatter source apparatus.
Background technology
In recent years, man-made noise is polluted has become the problem of environmental pollution that receives much concern gradually.Country has put into effect relevant country, industry standard and relevant laws and regulations such as The Law on Environmental Protection of the People's Republic of China, " People's Republic of China's pollution from environmental noise is prevented therapy ", " industrial enterprise's standard on emission of environmental noise within the boundary of an industrial enterprise " in succession.Appearance and enforcement along with these relevant laws and regulations, generations such as large fan, central air conditioner room, water pump machine room, cooling tower, new blower fan vertical shaft, boiler, transformer station, transformer, air compressor machine all belong to the noise abatement scope than the equipment of very noisy, and the sound insulation and noise reducing product development is widely used.With regard to the sound insulation aspect, product is also various day by day, roughly is divided into several big classes such as acoustic hood, acoustic booth, sound proof window, sound barrier.
The primary structure of existing acoustic hood is its cover wall, and it must have enough oise insulation factors, could intercept the unlikely unofficial biography of noise of sound source machinery and equipment, thereby noise is reduced to below the permission sound level of defined.According to mass law, the structure of cover wall should be a heavy, therefore, existing acoustic hood adopts structures such as brick, stone, concrete or steel plate usually, and it is suitable, very heavy to cause acoustic hood to be difficult to sonic source device in the making moulding time, particularly when considering the factors such as maintenance of on-the-spot space condition, sonic source device, require acoustic hood should lightly make things convenient for, be convenient to mounting or dismounting and transportation, but existing its structure heaviness of acoustic hood can't satisfy above-mentioned requirements.
The utility model content
In order to overcome the deficiency of existing acoustic hood structure heaviness, technical problem to be solved in the utility model provides a kind of structure acoustic hood more light and handy, easy to use.
The technical scheme that its technical matters that solves the utility model adopts is: acoustic hood, comprise the cover body that sonic source device is outer, and described cover body is made up of shell and the absorbent treatment that is connected on the outer casing inner wall.
Described cover body is connected on the sonic source device by vibration isolator.
Be filled with vibration isolation material between described cover body and the sonic source device.
Described vibration isolation material is rubber or felt.
Offer through hole on the described cover body, described through hole is equipped with noise elimination structure, and described noise elimination structure is the absorbing duct that is lined with acoustic absorbant on the inwall.
Described cover body is a split-type structural.
Splicing place of described cover body each several part is provided with the sound absorption pad.
Described absorbent treatment is the sound absorption cotton that is mingled with steel wire.
Be coated with damping layer on the wall of described shell.
The profile of described cover body and the profile phase of sonic source device coupling.
The beneficial effects of the utility model are: the cover body structure has bigger rigidity lightly, again, is convenient to install and use, and the standing wave effect of air-borne sound is little in the cover, and leakage sound is few, and defening effect is good, especially is suitable as the sound insulating structure that self vibrates bigger sonic source device.
Description of drawings
Fig. 1 is a synoptic diagram of the present utility model.
Fig. 2 is another synoptic diagram of the present utility model.
Be labeled as among the figure: sonic source device 1, cover body 2, vibration isolator 3, vibration isolation material 4, shell 21, absorbent treatment 22, through hole 24, noise elimination structure 25, sound absorption pad 26, acoustic absorbant 27.
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
As depicted in figs. 1 and 2, acoustic hood of the present utility model comprises the cover body 2 outside the sonic source device 1, and described cover body 2 is made up of shell 21 and the absorbent treatment 22 that is connected on shell 21 inwalls.Its structure is for existing acoustic hood, shell 21 can adopt that density is big, thin-walled material is made, for example make shell 21 with stereotype, steel plate, aluminium sheet, has certain thickness absorbent treatment 22 owing to be provided with one deck simultaneously, can guarantee its acoustically effective, simultaneously structure light and handy, be convenient to install and use.
For preventing solid-borne sound transmission, described cover body 2 is connected on the sonic source device 1 by vibration isolator 3.
For preventing solid-borne sound transmission, also can be filled with vibration isolation material 4 between described cover body 2 and sonic source device 1, described vibration isolation material 4 for example is rubber or felt, can absorb vibration, avoid the vibration of machine is directly passed to cover body 2 and makes cover body 2 become noise radiation face, thereby improved defening effect.
Consider the normal operation and the maintenance of sonic source device 1, may on described cover body 2, offer through hole 24, be preferably in described through hole 24 places noise elimination structure 25 is installed this moment, described noise elimination structure 25 is for being lined with the absorbing duct of acoustic absorbant 27 on the inwall, so neither reduce the noise reduction effect of acoustic hood integral body, can reach the ventilation cooling purpose again.
Consider to satisfy that the maintenance monitoring is convenient, the requirement of well-ventilated and noise elimination structure operate as normal thereof, described cover body 2 is a split-type structural, removable part cover body in case of necessity, to sonic source device 1 maintain, operation such as maintenance.
At this moment, in order to guarantee the defening effect of acoustic hood integral body, should be provided with sound absorption pad 26 in described cover body 2 each several part splicings place.
Described absorbent treatment 22 can adopt the sound absorption cotton that is mingled with steel wire, and steel wire can be connected with shell 21 easily, thereby the cotton that will absorb sound is connected on the shell 21.
Preferably, be coated with damping layer on the wall of described shell 21, thereby further suppress and avoided lightweight construction cover wall that resonance and coincidence effect take place, reduce the radiation of sound wave, for example, can be coated with bituminous grout or asbestumen slurry as damping layer.
For the volume that reduces acoustic hood and the swept area of noise, the cover body shape preferably with the profile phase coupling of sonic source device 1.
Embodiment:
As shown in Figure 1, utilize acoustic hood of the present utility model that the blower fan of certain large-scale turbine reduction valve group is carried out the sound attenuation and vibration isolation processing.The shell 21 of described acoustic hood adopts the steel plate of common Q 235, thickness 2～3mm, the absorbent treatment made from the sound absorption cotton that is mingled with stainless steel wire with one deck on the outer casing inner wall, and apply bituminous grout or asbestumen slurry as damping layer at the inwall of shell 21 or outer wall, cover body 2 adopts removable, assemblnig split-type structural, be provided with inlet/outlet, view window, hand hole and cover plate thereof, slit for tapping and splicing place on the cover wall, the sound absorption pad 26 and the sealing of materials such as soft rubber are set, and sentence the compacting of assurance seam with fastenings such as snap close flexible connection in addition; The profile similarity of cover body shape and blower fan, the shell of cover wall and blower fan keeps less clearance; The tapping that passes cover body 2 at transmission shaft is provided with the absorbing duct that inwall is lined with acoustic absorbant 27, and the length of absorbing duct should so both have been avoided overhead speaker greater than 15 times of gap width between transmission shaft and the acoustic absorbant 27, had reduced slit source sound by sound absorption again; , be clipped in to absorb between cover body 2 and the blower fan and vibrate as vibration isolation material 4 with flexible materials such as rubber or felts.
This cover body has bigger rigidity, and the standing wave effect of air-borne sound is little in the cover, and leakage sound is few, and defening effect is good.
Claims (9)
1. acoustic hood comprises the cover body (2) that sonic source device (1) is outer, it is characterized in that: described cover body (2) is made up of shell (21) and the absorbent treatment (22) that is connected on shell (21) inwall.
2. acoustic hood as claimed in claim 1 is characterized in that: described cover body (2) is connected on the sonic source device (1) by vibration isolator (3).
3. acoustic hood as claimed in claim 1 is characterized in that: be filled with vibration isolation material (4) between described cover body (2) and the sonic source device (1).
4. acoustic hood as claimed in claim 3 is characterized in that: described vibration isolation material (4) is rubber or felt.
5. as claim 1,2 or 3 described acoustic hoods, it is characterized in that: offer through hole (24) on the described cover body (2), described through hole (24) locates to be equipped with noise elimination structure (25), and described noise elimination structure (25) is for being lined with the absorbing duct of acoustic absorbant (27) on the inwall.
6. as claim 1,2 or 3 described acoustic hoods, it is characterized in that: described cover body (2) is a split-type structural.
7. acoustic hood as claimed in claim 6 is characterized in that: described cover body (2) each several part splicing place is provided with sound absorption pad (26).
8. as claim 1,2 or 3 described acoustic hoods, it is characterized in that: be coated with damping layer on the wall of described shell (21).
9. as claim 1,2 or 3 described acoustic hoods, it is characterized in that: the profile phase coupling of the profile of described cover body (2) and sonic source device (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201491864U CN201707910U (en) | 2010-04-02 | 2010-04-02 | Sound insulating hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201491864U CN201707910U (en) | 2010-04-02 | 2010-04-02 | Sound insulating hood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201707910U true CN201707910U (en) | 2011-01-12 |
Family
ID=43445065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201491864U Expired - Fee Related CN201707910U (en) | 2010-04-02 | 2010-04-02 | Sound insulating hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201707910U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102509563A (en) * | 2011-11-29 | 2012-06-20 | 阿诺德绝缘材料技术（吴江）有限公司 | Anti-noise shell |
| CN102855871A (en) * | 2011-07-01 | 2013-01-02 | 湖北省风机厂有限公司 | Sound insulation equipment |
| CN103285979A (en) * | 2013-06-04 | 2013-09-11 | 华北电力大学（保定） | Low-noise sound insulation sleeve for double-ended ball mill |
| CN104386540A (en) * | 2014-10-20 | 2015-03-04 | 江苏铭龙铝镁合金科技有限公司 | Winding silencer |
| CN105139845A (en) * | 2015-07-20 | 2015-12-09 | 合肥科启环保科技有限公司 | Noise adsorption device with damping function |
| CN106122996A (en) * | 2016-06-24 | 2016-11-16 | 无锡锡能锅炉有限公司 | Gas fired-boiler chimney denoising structure |
| CN106287982A (en) * | 2016-09-19 | 2017-01-04 | 珠海格力电器股份有限公司 | Bottom shell structure of indoor unit, indoor unit and method for improving noise of indoor unit |
| CN107560722A (en) * | 2017-08-28 | 2018-01-09 | 华东交通大学 | The high-precision noise measuring method and noise contribution analysis method of a kind of box-beam structure |
| CN108302067A (en) * | 2018-04-20 | 2018-07-20 | 中国电建集团河南工程有限公司 | A kind of power plant's fan noise reducer |
| CN113839513A (en) * | 2021-09-16 | 2021-12-24 | 东南大学 | Motor sound insulation cover device |
-
2010
- 2010-04-02 CN CN2010201491864U patent/CN201707910U/en not_active Expired - Fee Related
Cited By (12)
| 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 |
| CN102509563A (en) * | 2011-11-29 | 2012-06-20 | 阿诺德绝缘材料技术（吴江）有限公司 | Anti-noise shell |
| CN103285979A (en) * | 2013-06-04 | 2013-09-11 | 华北电力大学（保定） | Low-noise sound insulation sleeve for double-ended ball mill |
| CN104386540A (en) * | 2014-10-20 | 2015-03-04 | 江苏铭龙铝镁合金科技有限公司 | Winding silencer |
| CN105139845A (en) * | 2015-07-20 | 2015-12-09 | 合肥科启环保科技有限公司 | Noise adsorption device with damping function |
| CN106122996A (en) * | 2016-06-24 | 2016-11-16 | 无锡锡能锅炉有限公司 | Gas fired-boiler chimney denoising structure |
| CN106287982A (en) * | 2016-09-19 | 2017-01-04 | 珠海格力电器股份有限公司 | Bottom shell structure of indoor unit, indoor unit and method for improving noise of indoor unit |
| CN106287982B (en) * | 2016-09-19 | 2018-09-07 | 珠海格力电器股份有限公司 | Bottom shell structure of indoor unit, indoor unit and method for improving noise of indoor unit |
| CN107560722A (en) * | 2017-08-28 | 2018-01-09 | 华东交通大学 | The high-precision noise measuring method and noise contribution analysis method of a kind of box-beam structure |
| CN108302067A (en) * | 2018-04-20 | 2018-07-20 | 中国电建集团河南工程有限公司 | A kind of power plant's fan noise reducer |
| CN113839513A (en) * | 2021-09-16 | 2021-12-24 | 东南大学 | Motor sound insulation cover device |
| CN113839513B (en) * | 2021-09-16 | 2022-04-22 | 东南大学 | Motor sound insulation cover device |
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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: 20110112 Termination date: 20170402 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |