CN203892146U - Sound attenuation device - Google Patents
Sound attenuation device Download PDFInfo
- Publication number
- CN203892146U CN203892146U CN201420299895.9U CN201420299895U CN203892146U CN 203892146 U CN203892146 U CN 203892146U CN 201420299895 U CN201420299895 U CN 201420299895U CN 203892146 U CN203892146 U CN 203892146U
- Authority
- CN
- China
- Prior art keywords
- muffling device
- round platform
- fan
- protection slab
- barrel
- 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
Links
Abstract
The utility model relates to the field of machinery, in particular to a sound attenuation device. A shell of the sound attenuation device comprises an inner protective panel, one or more sound absorption layers and an outer protective panel from inside to outside, the sound absorption layers can achieve the sound absorption effect, a plurality of through holes are formed in the inner protective panel, the sound attenuation device is of a non-planar structure, and airflow can be guided, so that the sound absorption effect is achieved. In addition, one or more partition boards are arranged inside the sound attenuation device, airflow can be partitioned and blocked off, the flowing speed of airflow can be decreased, and the intensity of sound can be decreased.
Description
Technical field
The utility model mechanical field, in particular to muffling device.
Background technique
Flour mill's air compressor working procedure, produces air blast and a large amount of dusts of discharge, and surrounding enviroment are caused to noise pollution, and especially at night, the sound that air-flow causes is particularly ear-piercing, has a strong impact on periphery crowd's life and rest.The outlet pipe of air compressor can carry out gas discharging, in order to eliminate as far as possible the sound of gas in outlet pipe, sound-insulating cover is set conventionally on outlet pipe, but, owing to containing a large amount of flour dusts in gas, so must perforate on the cover wall of sound-insulating cover, thereby hole can leakage sound affects the noise reduction of sound-insulating cover.
Model utility content
The purpose of this utility model is to provide a kind of muffling device, to solve the problem that some machinery noises are huge.
The utility model embodiment provides a kind of muffling device, for tubular structure, its lower end is connected with the outlet pipe for the treatment of noise reducing apparatus, and its roof has more than one relief opening, and its housing comprises from inside to outside: interior protection slab, absorbent treatment more than one deck, outer protection slab;
Described interior protection slab is provided with some through holes;
The inside of described muffling device is provided with more than one dividing plate, and all described dividing plates are fixedly connected with described interior protection slab.
In certain embodiments, be preferably, the surface of described dividing plate is provided with cellular structure or concaveconvex structure.
In certain embodiments, be preferably, all described dividing plates are all parallel with the axis of described muffling device.
In certain embodiments, be preferably, the Placement of described interior protection slab and described dividing plate comprise following any: bolt connection, clamping, pin joint.
In certain embodiments, be preferably, the described interior protection slab on its top is multilayer steps structure, and thickening gradually from bottom to top.
In certain embodiments, be preferably, in the time that described absorbent treatment is 2 layers, described housing comprises from inside to outside: the absorbent treatment of the interior protection slab of steel, the absorbent treatment of foamed aluminium, super glass wool, the outer protection slab of steel;
Between the interior protection slab of described steel and described foamed aluminium, be connected by screw; Between described foamed aluminium and described super glass wool, be that alite paste is bonding by epoxy; Between the outer protection slab of described super glass wool and described steel, being provided with epoxy is that alite paste is bonding.
In certain embodiments, be preferably, described housing by from bottom to top along the first axial round platform barrel of described muffling device, the second cylinder barrel, the 3rd round platform barrel, the 4th round platform barrel is detachable is spliced, stitching portion is provided with sealing configuration; The lower limb of described the first round platform barrel with described in treat that the outlet pipe of noise reducing apparatus is tightly connected.
In certain embodiments, be preferably, the mode of described detachable splicing is that bolt connects or draw-in groove connects.
In certain embodiments, be preferably, described the first round platform barrel is divided into plural the first fan-shaped cambered surface, and the parallel to an axis of all described the first fan-shaped cambered surfaces is axial in described the first round platform barrel, and adjacent two described the first fan-shaped cambered surfaces seal and removably connect;
In certain embodiments, be preferably, described the second cylinder barrel is divided into plural the second cambered surface, and the parallel to an axis of all described the second cambered surfaces is axial in described the second cylinder barrel, and adjacent two described the second cambered surfaces seal and removably connect;
In certain embodiments, be preferably, described the 3rd round platform barrel is divided into plural the 3rd fan-shaped cambered surface, and the parallel to an axis of all described the 3rd fan-shaped cambered surfaces is axial in described the 3rd round platform barrel, and adjacent two described the 3rd fan-shaped cambered surfaces seal and removably connect;
In certain embodiments, be preferably, described the 4th round platform barrel is divided into plural four fan-shaped cambered surface, and the parallel to an axis of all described four fan-shaped cambered surfaces is axial in described the 4th round platform barrel, and adjacent two described four fan-shaped cambered surfaces seal and removably connect.
In certain embodiments, be preferably, described in the Placement that removably connects for following any: bolt connection, clamping, pin joint.
The muffling device that the utility model embodiment provides, compared with prior art, the housing of muffling device comprises from inside to outside: interior protection slab, absorbent treatment more than one deck, outer protection slab; Wherein absorbent treatment more than one deck can play the effect of sound absorption, and interior protection slab is provided with some through holes, is a kind of non-planar structure, also can import air-flow, reaches the effect of sound absorption; In addition, inside is provided with more than one dividing plate, and air-flow is separated, interrupted, and has slowed down the flow velocity of air-flow, therefore, can weaken the intensity of sound.
Brief description of the drawings
Fig. 1 is the structural representation of muffling device in embodiment of the utility model;
Fig. 2 is the partial cross section figure of muffling device in another embodiment of the utility model;
Fig. 3 is muffling device the first round platform housing longitudinal section in embodiment of the utility model;
Fig. 4 is the enlarged view at H place in Fig. 2;
Fig. 5 is the structural representation of muffling device in the utility model embodiment 6.
Embodiment
By reference to the accompanying drawings the utility model is described in further detail below by specific embodiment.
Consider at present some equipment that are provided with outlet pipe larger problem that makes a noise, provide a kind of muffling device in the utility model embodiment.
This muffling device is tubular structure, and its lower end is connected with the outlet pipe for the treatment of noise reducing apparatus, and its roof has more than one relief opening, and its housing comprises from inside to outside: interior protection slab, absorbent treatment more than one deck, outer protection slab;
Described interior protection slab is provided with some through holes; Its inside is provided with more than one dividing plate, and all described dividing plates are fixedly connected with described interior protection slab.
The housing of muffling device comprises from inside to outside: interior protection slab, absorbent treatment more than one deck, outer protection slab; Wherein absorbent treatment more than one deck can play the effect of sound absorption, and interior protection slab is provided with some through holes, is a kind of non-planar structure, also can import air-flow, reaches the effect of sound absorption; In addition, inside is provided with more than one dividing plate, and air-flow is separated, interrupted, and has slowed down the flow velocity of air-flow, therefore, can weaken the intensity of sound.
Next, the utility model will by some more specifically example describe this muffling device in detail:
Embodiment 1:
A kind of muffling device, as shown in Figure 1, is tubular structure, and this tubular structure can be the cylinder of cylinder, frustum cone cylinder, prism, or the combination of above various tubular structures, and tubular can keep inner spaciousness, facilitates air-flow to pass through.
The lower end 11 of this muffling device is connected with the outlet pipe for the treatment of noise reducing apparatus, is equivalent to outlet pipe to add a silencing apparatus, the gas of discharging in outlet pipe is carried out to air-flow and weaken processing.
Concrete crippled mode has multiple:
Its roof has more than one relief opening 6, and the gas that exhaust outlet is discharged is discharged by the relief opening 6 of multiple more minor diameters, has reduced the speed of air-flow, reaches the effect of noise reduction;
Its housing comprises from inside to outside: interior protection slab, absorbent treatment more than one deck, outer protection slab; Housing is made up of multilayer, and the inside comprises absorbent treatment and can reach the effect of sound absorption, can strengthen acoustically effective if absorbent treatment is multilayer.And interior protection slab is provided with some through holes, the gas entering from outlet pipe can be dispersed, and enters in through hole, thereby has weakened intensity and the speed of air-flow, reaches the object of noise elimination.
Its inside is provided with more than one dividing plate, and all dividing plates are fixedly connected with interior protection slab.The Placement of interior protection slab and dividing plate comprise following any: bolt connection, clamping, pin joint.Dividing plate can be blocked air-flow, also can say that air-flow one end is isolated in different spaces by decentralized complete air-flow, and air-flow is difficult to form stronger speed in flowing, and reaches the object of noise elimination.On the other hand, air-flow also can weaken the flow velocity of air-flow in the time clashing into dividing plate, and the air-flow of reduction is difficult to form flowing of scale, reaches the object of noise elimination.
On the other hand, this dividing plate can also play the object of blocks dust, is applied on the dust kind equipment such as cornmill, cement machine, can play the object of noise elimination, can also blocks dust think to distribute in the air.
Embodiment 2
The present embodiment can carry out following transformation on embodiment 1 basis, the surface of dividing plate is provided with cellular structure or concaveconvex structure, cellular structure is a kind of regularity pore space structure, can absorb a part of air-flow, equally, concaveconvex structure is a kind of irregular surface structure, can carry out to air-flow the counterattack of different direction, similar light scattering effect, these two kinds of reforming modes or from reduce throughput angle eliminate the noise, or eliminating the noise from the angle that changes air current flow direction flowing velocity, is all a kind of extraordinary noise elimination reforming mode.And this surface structure can be good at blocks dust.
Embodiment 3
The present embodiment can carry out following transformation on embodiment 1 basis, and all dividing plates 2 are all parallel with the axis of muffling device, as shown in Figure 2.Dividing plate with the dividing plate of parallel to an axis relatively tilts, the in the situation that of stopping more dust, can not stop up air-flow in muffling device on dividing plate, avoids air-flow to be difficult to the approximate extreme phenomenon of discharging.This transformation can normally be produced, again can noise reduction, gear dust.
Embodiment 4
On the basis of the present embodiment 1, in order to improve erasure effect, the interior protection slab on top can be done to following improvement, allow the interior protection slab on top make multilayer steps structure 4, and thickening gradually from bottom to top.In the process that air-flow flows, can meet with step from bottom to top, be forced to reduction of speed, and dust experience step also can slow down and drop on step.
Embodiment 5
In the time that absorbent treatment is 2 layers, the present embodiment can carry out more specifically structural design based on the various embodiments described above, and housing comprises from inside to outside: the outer protection slab 10 of the interior protection slab 7 of steel, foamed aluminium layer 8, super glass wool layer 9, steel, as shown in Figure 3,4;
Between the interior protection slab 7 of steel and foamed aluminium 8, be connected by screw; Between foamed aluminium layer and super glass wool 9, be that alite paste is bonding by epoxy; Between the outer protection slab 10 of super glass wool and steel, being provided with epoxy is that alite paste is bonding.
It should be noted that sealing is extremely important to eliminating the noise, so adopt the bonding one side of Bond according to needing adhesive material to determine, binder is that settable liquid forms on the other hand, and sealing effect is very good.In addition, above screw place also needs to add rubber seal.
Embodiment 6
Consider that this muffling device can keep off dust, time has been grown, internal dust is too many, impact is normal produces, and for fear of this situation, need to dismantle muffling device, keep in repair, for convenient disassembly, as shown in Figure 5, housing by from bottom to top along the first axial round platform barrel 12 of muffling device, the second cylinder barrel 13, the 3rd round platform barrel 14, the 4th round platform barrel 15 is detachable is spliced, stitching portion 5 is provided with sealing configuration; The lower limb of the first round platform barrel 12 with treat that the outlet pipe of noise reducing apparatus is tightly connected.When needing repairing, only need to, according to the structure of above-mentioned splicing, dismantle.
On the other hand, in the present embodiment, the diameter difference that cylinder is upper and lower, air-flow, dust can clash into from inside through out-of-date, and air-flow, dust all can slow down, and reach the effect of noise reduction, dust suction.
The mode of above-mentioned detachable splicing is that bolt connects or draw-in groove connects.
For more convenient dismounting, installation, transport, production, can also continue housing to split, that is: the first round platform barrel 12 is divided into plural the first fan-shaped cambered surface, the parallel to an axis of all the first fan-shaped cambered surfaces is axial in the first round platform barrel, and adjacent two the first fan-shaped cambered surfaces seal and removably connect.
The second cylinder barrel 13 is divided into plural the second cambered surface, and the parallel to an axis of all the second cambered surfaces is axial in the second cylinder barrel, and adjacent two the second cambered surfaces seal and removably connect.
The 3rd round platform barrel 14 is divided into plural the 3rd fan-shaped cambered surface, and the parallel to an axis of all the 3rd fan-shaped cambered surfaces is axial in the 3rd round platform barrel, and adjacent two the 3rd fan-shaped cambered surfaces seal and removably connect.
The 4th round platform barrel 15 is divided into plural four fan-shaped cambered surface, and the parallel to an axis of all four fan-shaped cambered surfaces is axial in the 4th round platform barrel, and adjacent two four fan-shaped cambered surfaces seal and removably connect.
The above-mentioned Placement removably connecting for following any: bolt connection, clamping, pin joint.
These are only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (10)
1. a muffling device, is characterized in that, is tubular structure, and its lower end is connected with the outlet pipe for the treatment of noise reducing apparatus, and its roof has more than one relief opening, and its housing comprises from inside to outside: interior protection slab, absorbent treatment more than one deck, outer protection slab;
Described interior protection slab is provided with some through holes;
The inside of described muffling device is provided with more than one dividing plate, and all described dividing plates are fixedly connected with described interior protection slab.
2. muffling device as claimed in claim 1, is characterized in that, the surface of described dividing plate is provided with cellular structure or concaveconvex structure.
3. muffling device as claimed in claim 1, is characterized in that, all described dividing plates are all parallel with the axis of described muffling device.
4. muffling device as claimed in claim 1, is characterized in that, the Placement of described interior protection slab and described dividing plate comprise following any: bolt connection, clamping, pin joint.
5. muffling device as claimed in claim 1, is characterized in that, the described interior protection slab on its top is multilayer steps structure, and thickening gradually from bottom to top.
6. the muffling device as described in claim 1-5 any one, is characterized in that, in the time that described absorbent treatment is 2 layers, described housing comprises from inside to outside: the absorbent treatment of the interior protection slab of steel, the absorbent treatment of foamed aluminium, super glass wool, the outer protection slab of steel;
Between the interior protection slab of described steel and described foamed aluminium, be connected by screw; Between described foamed aluminium and described super glass wool, be that alite paste is bonding by epoxy; Between the outer protection slab of described super glass wool and described steel, being provided with epoxy is that alite paste is bonding.
7. the muffling device as described in claim 1-5 any one, it is characterized in that, described housing by from bottom to top along the first axial round platform barrel of described muffling device, the second cylinder barrel, the 3rd round platform barrel, the 4th round platform barrel is detachable is spliced, stitching portion is provided with sealing configuration; The lower limb of described the first round platform barrel with described in treat that the outlet pipe of noise reducing apparatus is tightly connected.
8. muffling device as claimed in claim 7, is characterized in that, the mode of described detachable splicing is that bolt connects or draw-in groove connects.
9. muffling device as claimed in claim 7, is characterized in that,
Described the first round platform barrel is divided into plural the first fan-shaped cambered surface, and the parallel to an axis of all described the first fan-shaped cambered surfaces is axial in described the first round platform barrel, and adjacent two described the first fan-shaped cambered surfaces seal and removably connect; And/or
Described the second cylinder barrel is divided into plural the second cambered surface, and the parallel to an axis of all described the second cambered surfaces is axial in described the second cylinder barrel, and adjacent two described the second cambered surfaces seal and removably connect; And/or
Described the 3rd round platform barrel is divided into plural the 3rd fan-shaped cambered surface, and the parallel to an axis of all described the 3rd fan-shaped cambered surfaces is axial in described the 3rd round platform barrel, and adjacent two described the 3rd fan-shaped cambered surfaces seal and removably connect; And/or
Described the 4th round platform barrel is divided into plural four fan-shaped cambered surface, and the parallel to an axis of all described four fan-shaped cambered surfaces is axial in described the 4th round platform barrel, and adjacent two described four fan-shaped cambered surfaces seal and removably connect.
10. muffling device as claimed in claim 9, is characterized in that, described in the Placement that removably connects for following any: bolt connection, clamping, pin joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420299895.9U CN203892146U (en) | 2014-06-06 | 2014-06-06 | Sound attenuation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420299895.9U CN203892146U (en) | 2014-06-06 | 2014-06-06 | Sound attenuation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203892146U true CN203892146U (en) | 2014-10-22 |
Family
ID=51718559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420299895.9U Expired - Fee Related CN203892146U (en) | 2014-06-06 | 2014-06-06 | Sound attenuation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203892146U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105275782A (en) * | 2015-11-10 | 2016-01-27 | 株洲时代新材料科技股份有限公司 | Noise control device for air conditioner compressor |
-
2014
- 2014-06-06 CN CN201420299895.9U patent/CN203892146U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105275782A (en) * | 2015-11-10 | 2016-01-27 | 株洲时代新材料科技股份有限公司 | Noise control device for air conditioner compressor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102252818B (en) | Supersonic wind tunnel with variable quality of flow field | |
| CN203892146U (en) | Sound attenuation device | |
| CN203757977U (en) | Modular resistant and compensatory compound silencer | |
| CN107281836A (en) | A kind of noise reduction dust arrester | |
| CN204614441U (en) | Noise treatment system | |
| CN206189780U (en) | Dalle with absorbing effect | |
| CN204834033U (en) | No filler shell and tube silencer | |
| CN104595251A (en) | Silencer for lampblack fan | |
| CN103727075B (en) | A kind of impedance-compensated composite muffler of modular | |
| CN208702493U (en) | A kind of car combustion engine noise silencing apparatus | |
| CN206722117U (en) | A kind of equipment machine room noise-decreasing device | |
| CN213870465U (en) | Noise reduction and elimination device for main fan of mine | |
| CN106014542B (en) | High pressure silencer | |
| CN110561622B (en) | Dust suppression and noise reduction device for sawing stone by bridge type diamond circular saw | |
| CN108895036A (en) | Muffler | |
| CN206570987U (en) | A kind of assembled wall for being capable of damping antidetonation | |
| CN103710658B (en) | Electric arc spraying silencing apparatus and sound reduction method | |
| CN102912759B (en) | Shunting interference muffling air exhaust and noise reduction device and railway track bed blowing and sucking sweeping work device | |
| CN210565222U (en) | Novel fan amortization device | |
| CN209557192U (en) | A kind of muffler, compressor and refrigeration system | |
| CN205920755U (en) | Full microperforated absorber silencer | |
| CN207722945U (en) | A kind of building crusher with decrease of noise functions | |
| CN110486351A (en) | A kind of 500T feeder muffler and its operating method | |
| CN206437811U (en) | Compressed air hoist noise reduction oil collection box | |
| CN103527287A (en) | Silencer of motorcycle |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141022 Termination date: 20190606 |