CN208330749U - Blimp used in Roots blower - Google Patents
Blimp used in Roots blower Download PDFInfo
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- CN208330749U CN208330749U CN201820944558.9U CN201820944558U CN208330749U CN 208330749 U CN208330749 U CN 208330749U CN 201820944558 U CN201820944558 U CN 201820944558U CN 208330749 U CN208330749 U CN 208330749U
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- sound
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- shell
- blimp
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Abstract
The utility model belongs to air blower accessories field, and in particular to blimp used in a kind of Roots blower.The blimp includes shell, shell includes outer shell and inner shell, there is damping layer on outer shell surface, successively has foamed ceramics acoustic board, mineral wool board, spongy layer to interior from outer between outer shell and inner shell, what inner shell and outer shell were away from each other has sound absorbing layer on one side.Blimp is set double-layer shell structure by the utility model, and foamed ceramics acoustic board, mineral wool board, spongy layer are set gradually between double Shell, and inner shell with what outer shell was away from each other have sound absorbing layer on one side, acoustical cotton in the sound absorbing layer and the structure for listening sound-absorbing layer itself also play good sound absorption to noise caused by Roots blower；In addition, the flexible particle inside spherical surface and spherical surface that the surface of sound-absorbing pedestal is arranged, also plays good cushioning effect to noise, further reduces noise.
Description
Technical field
The utility model belongs to air blower accessories field, and in particular to blimp used in a kind of Roots blower.
Background technique
The serious physical and mental health for endangering staff of man-made noise pollution meeting, for example be easy to make one to generate anxiety, uneasiness
Etc. the symptoms such as negative emotions, and fatigue, insomnia, failure of memory, reduce the attention and accuracy when people's work, reduce
Working efficiency, or even easily cause the generation of contingency.But also will cause and power is exhaled to lose, staff is exposed to noise ring
A period of time, will cause the i.e. temporary hearing impairment of auditory fatigue, works in a noisy environment for a long time, it will cause forever in border
Long property hearing loss.In addition to this, a variety of diseases can also be caused.
Blimp is device noise source is disposed within, that block noise is propagated outward, and blimp is that one kind is effectively reduced
The effective measures of various kinds of equipment noise jamming are widely used in the noise abatement of the equipment such as compressor, air blower, motor, water pump.
Steel plate, plastic plate, plank or concrete slab etc. is usually used in common acoustic hood or blimp.Plastic plate, wood
The density of plate is smaller, such as requires comparable weight per unit area, then thickness is often larger, and furthermore with the passing of time wood board splicing can generate seam
Gap leakage sound, and securely, fire line it is also poor.The better performances of concrete slab, but in weight, it is inconvenient to use.Steel plate adds
It is ideal in terms of work usability, but the sound insulation effect of steel plate is directly proportional to its thickness, thickness doubles, and oise insulation factor increases
Add 4-6dB, but with the increase of steel plate weight, oise insulation factor increase is slowly.Therefore, only as composed by steel plate every
Acoustic shell is not able to satisfy the actual demand of industrialized production.
Utility model content
In order to solve the above technical problems, the utility model provides a kind of acoustic hood for being directed to Roots blower,
The blimp is provided with double Shell and damping layer, and other sound-insulating structures, such as foamed ceramics acoustic board, mineral wool board, sea
Continuous layer, is additionally provided with sound-absorbing structure and acoustical cotton, and above-mentioned setting can not only good sound insulation, moreover it is possible to sound-absorbing.
Shell includes outer shell and inner shell, and outer shell and inner shell are steel plate shell, outer shell
There is damping layer in outer surface, successively has foamed ceramics acoustic board, mineral wool board, sponge to interior from outer between outer shell and inner shell
What layer, inner shell and outer shell were away from each other has sound absorbing layer on one side, and sound absorbing layer is made of sound-absorbing internal layer and sound-absorbing outer layer, inhales
The outermost cross section of sound outer layer is wavy, and sound-absorbing outer layer is continuous by multiple cross sections and the identical cavity of shape is formed,
There is one layer of acoustical cotton in cavity；Sound-absorbing outer layer is identical with the structure of sound-absorbing internal layer；Sound-absorbing outer layer and sound-absorbing internal layer are staggered；It inhales
Acoustical cotton is also equipped in the cavity of sound internal layer；Pass through glue sticking between sound-absorbing outer layer and sound-absorbing internal layer；Sound-absorbing internal layer and sound-absorbing
Pedestal is connected, the surface of sound-absorbing pedestal have multiple indents cambered surface or spherical surface composed by cambered surface unit or spherical surface unit, arc
It is fluted on face unit or spherical surface unit, there are multiple cylindrical vents in groove；
The upper side of blimp has guide duct, and the one side of blimp has observation door, observation door and the detachable company in side
It connects.
Damping layer is to be formed by plane layer after damping glue is impregnated with asbestos wool.
Sound-absorbing outer layer is made of multiple continuous and cross sections in the cavity of regular hexagon.
Sound-absorbing outer layer is made of multiple continuous and circular in cross-section cavities.
There are multiple regular shapes to have irregular microchannel in foamed ceramics acoustic board.
Flexible particle in groove is provided with separation net on groove, and the diameter of flexible particle is greater than the diameter of separation net, and
Diameter of the diameter of flexible particle also greater than cylindrical vent.
The present inventor passes through multiple the study found that relying solely on sound-absorbing and acoustic material, the noise or noise being isolated
The characteristics of being limited, being directed to Roots blower operation, is on the one hand due to running at high speed or running, separately at runtime
It on the one hand is that it drives air molecule movement in vibration, to produce biggish noise pollution；Therefore, the present inventor in addition to
Shape, material improvement above and below make improvements except, flexible particle material is also introduced, by its creative setting at sound-absorbing bottom
In the groove of seat, so that noise is propagated by cavity after being absorbed by the acoustical cotton in cavity, flexible particle can be effectively to making an uproar
Sound plays the role of damping, to achieve the purpose that reduce noise.That is, the principles of the present invention are, 1 makes an uproar from sound-absorbing isolation
The material and structure of sound improve；2 from the aspect of damping, with reasonable and suitable structure and introduces flexibility
Grain, so that flexible particle plays the role of damping to noise.
The utility model has the beneficial effects that: blimp is set double-layer shell structure by the utility model, and double
Foamed ceramics acoustic board, mineral wool board, spongy layer are set gradually between layer shell, and opposite with outer shell in inner shell
From have sound absorbing layer on one side, acoustical cotton in the sound absorbing layer and the structure for listening sound-absorbing layer itself are also to caused by Roots blower
Noise plays good sound absorption；In addition, flexible of cambered surface and cambered surface inside grooves that the surface of sound-absorbing pedestal is arranged
Grain, also plays good cushioning effect to noise, further reduces noise.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the present embodiment 1；
Fig. 2 is the side structure schematic diagram of the cambered surface unit in embodiment 1；
Fig. 3 is the structural schematic diagram of sound absorbing layer in embodiment 1；
Fig. 4 is the structural schematic diagram that the cambered surface unit in embodiment 1 is installed separation net and is placed in after flexible particle；
Fig. 5 is the cross-sectional view of the cambered surface unit in embodiment 1；
Fig. 6 is the structural schematic diagram of sound-absorbing pedestal in embodiment 1；
Fig. 7 is the cavity structural schematic diagram of sound-absorbing outer layer in embodiment 1；
Fig. 8 is the perspective view of the cavity structure of sound-absorbing outer layer in embodiment 1；
Fig. 9 is the location diagram of multiple cavity structures of sound-absorbing outer layer in embodiment 1；
Figure 10 is the perspective view of the cavity structure of sound-absorbing outer layer in embodiment 2；
In figure, 1- outer shell, 2- inner shell, 3- damping layer, 4- foamed ceramics acoustic board, 5- mineral wool board, 6- sponge
Layer, 7- sound absorbing layer, 8- sound-absorbing internal layer, 9- sound-absorbing outer layer, 10- cavity, 11- acoustical cotton, 12- sound-absorbing pedestal, 13- cambered surface, 14- are recessed
Slot, 15- cylindrical vent, 16- guide duct, 17- observe door, 18- flexible particle, 19- cambered surface unit, 20- separation net.
Specific embodiment
The utility model is further described with reference to the accompanying drawings and detailed description, so as to this field
Technical staff know more about the utility model, but the utility model is not limited with this.
Embodiment 1
Blimp used in Roots blower, including shell, shell include outer shell 1 and inner shell 2, outer shell 1
It is steel plate shell with inner shell 2, there is damping layer 3 on 1 surface of outer shell, oneself is outer extremely between outer shell 1 and inner shell 2
Inside successively there are foamed ceramics acoustic board 4, mineral wool board 5, spongy layer 6, what inner shell 2 and outer shell 1 were away from each other has suction on one side
Sound-absorbing layer 7, sound absorbing layer 7 are made of sound-absorbing internal layer 8 and sound-absorbing outer layer 9, and the outermost cross section of sound-absorbing outer layer 9 is wavy, are inhaled
Sound outer layer 9 is made of the cavity 10 of the consecutive identical shape in multiple cross sections, there is one layer of acoustical cotton 11 in cavity 10；Acoustical cotton and
For the inner sidewall of cavity by glue sticking, sound-absorbing outer layer 9 is identical with the structure of sound-absorbing internal layer 8；Sound-absorbing outer layer 9 and sound-absorbing internal layer 8 are handed over
Mistake setting；Acoustical cotton 11 is also equipped in the cavity of sound-absorbing internal layer 8；Pass through glue sticking between sound-absorbing outer layer 9 and sound-absorbing internal layer 8；
Sound-absorbing internal layer 8 is connected with sound-absorbing pedestal 12, and there are the cambered surface unit 19 of multiple indents, cambered surface unit 19 in the surface of sound-absorbing pedestal 12
Fluted 14 are gone up, there are multiple cylindrical vents 15 in groove 14；
The upper side of blimp has guide duct 16, and the one side of blimp has observation door 17, observation door 17 and blimp
Side detachable connection.
Damping layer 3 is that damping glue is impregnated with obtained by asbestos wool, and damping layer 3 is coated in the outer surface of outer shell 1.
Sound-absorbing outer layer 9 is made of multiple continuous cross sections in the cavity 10 of regular hexagon.
There are multiple small regular shapes or irregular microchannel in foamed ceramics acoustic board 4, if section is in anchor ring
The microchannel of shape, such as cuboid microchannel.Acoustic foam ceramic wafer 4 is by inorganic raw material, organic polymer raw material and nanometer
Silicate starting materials are combined with chemical bond technology, and there is the acoustical material with three-dimensional communication reticular structure resonant cavity to inhale
Acoustic form is a kind of sound absorber of orientation, after sound wave enters acoustic board, the viscosity of the air in microchannel make its energy by
Fade consumption, and the vibration of sound wave weakens therewith, to achieve the effect that good sqouynd absorption lowering noise.
There is flexible particle in multiple cylindrical vents 15 in groove 14, there is the surface of multiple cylindrical vents in groove 14
There is separation net 20, and the diameter of flexible particle 18 is greater than the diameter of separation net 20, and the diameter of flexible particle is also greater than cylindric
The diameter in duct.
When the air blower in acoustic hood runs at high speed, generated noise, first by the suction in cavity in sound-absorbing outer layer
Sound cotton 11 is absorbed, and is then entered back into sound-absorbing internal layer 8 and is absorbed by the acoustical cotton 11 of sound-absorbing internal layer 8, the sound-absorbing outer layer 8 being staggered
Cavity 10 with sound-absorbing internal layer 8 compared to single layer, more preferable for the assimilation effect of noise, the noise after the absorption of cavity 10 enters
In sound-absorbing pedestal, absorbed by flexible particle in the groove 14 of cambered surface unit 19, and the cylindrical bore 15 in groove 14 also can
Noise is absorbed.
Noise completely cuts off a part by inner shell 2, then again successively by spongy layer 6, mineral wool board 5, foam after absorbing
Ceramic sound absorbing plate absorbs 4, then is completely cut off by outer shell 1, is finally completely cut off by the damping layer 3 on 1 surface of outer shell, to reach suction
The purpose of sound noise reduction.
Embodiment 2
Blimp used in Roots blower, including shell, shell include outer shell 1 and inner shell 2, outer shell 1
It is steel plate shell with inner shell 2, there is damping layer 3 on 1 surface of outer shell, oneself is outer extremely between outer shell 1 and inner shell 2
Inside successively there are foamed ceramics acoustic board 4, mineral wool board 5, spongy layer 6, what inner shell 2 and outer shell 1 were away from each other has suction on one side
Sound-absorbing layer 7, sound absorbing layer 7 are made of sound-absorbing internal layer 8 and sound-absorbing outer layer 9, and the outermost cross section of sound-absorbing outer layer 9 is wavy, are inhaled
Sound outer layer 9 is made of the cavity 10 of the consecutive identical shape in multiple cross sections, there is one layer of acoustical cotton 11 in cavity 10；Sound-absorbing outer layer
9 is identical with the structure of sound-absorbing internal layer 8；Sound-absorbing outer layer 9 and sound-absorbing internal layer 8 are staggered；It is also equipped in the cavity of sound-absorbing internal layer 8
Acoustical cotton 11；Pass through glue sticking between sound-absorbing outer layer 9 and sound-absorbing internal layer 8；Sound-absorbing internal layer 8 is connected with sound-absorbing pedestal 12, sound-absorbing
There is a cambered surface unit 19 of multiple indents on the surface of pedestal 12, fluted 14 on cambered surface unit 19, has in groove 14 multiple cylindric
Duct 15；
The upper side of blimp has guide duct 16, and the one side of blimp has observation door 17, observation door 17 and blimp
Side detachable connection.
Damping layer 3 is that damping glue is impregnated with obtained by asbestos wool, and damping layer is coated in the outer surface of outer shell 1.
Sound-absorbing outer layer 9 is made of the cavity 10 of multiple continuous circular in cross-section.
There are multiple small regular shapes or irregular microchannel in foamed ceramics acoustic board 4, if section is in anchor ring
The microchannel of shape, such as cuboid microchannel.Acoustic foam ceramic wafer 4 is by inorganic raw material, organic polymer raw material and nanometer
Silicate starting materials are combined with chemical bond technology, and there is the acoustical material with three-dimensional communication reticular structure resonant cavity to inhale
Acoustic form is a kind of sound absorber of orientation, after sound wave enters acoustic board, the viscosity of the air in microchannel make its energy by
Fade consumption, and the vibration of sound wave weakens therewith, to achieve the effect that good sqouynd absorption lowering noise.
There is flexible particle in multiple cylindrical vents 15 in groove 14, there is the surface of multiple cylindrical vents in groove 14
There is separation net 20, and the diameter of flexible particle 18 is greater than the diameter of separation net 20.
The section of cavity can also be that square or rectangle, or ellipse or diamond shape, similar transformation are also fallen
Within the scope of the utility model protection.
Claims (6)
1. blimp used in Roots blower, including shell, which is characterized in that shell includes outer shell and inner shell, outside
Layer shell and inner shell are steel plate shell, and there is damping layer in the outer surface of outer shell, between outer shell and inner shell
Successively there are foamed ceramics acoustic board, mineral wool board, spongy layer to interior from outer, what inner shell and outer shell were away from each other has suction on one side
Sound-absorbing layer, sound absorbing layer are made of sound-absorbing internal layer and sound-absorbing outer layer, and the outermost cross section of sound-absorbing outer layer is wavy, sound-absorbing outer layer
By multiple cross sections, the identical cavity of continuous and shape is formed, and has one layer of acoustical cotton in cavity；Sound-absorbing outer layer and sound-absorbing internal layer
Structure it is identical；Sound-absorbing outer layer and sound-absorbing internal layer are staggered；Acoustical cotton is also equipped in the cavity of sound-absorbing internal layer；Sound-absorbing outer layer
Pass through glue sticking between sound-absorbing internal layer；Sound-absorbing internal layer is connected with sound-absorbing pedestal, and there are multiple indents on the surface of sound-absorbing pedestal
It is fluted on cambered surface unit or spherical surface unit composed by cambered surface or spherical surface, cambered surface unit or spherical surface unit, have in groove multiple
Cylindrical vent；
The upper side of blimp has guide duct, and the one side of blimp has observation door, observation door and side detachable connection.
2. blimp used in Roots blower as described in claim 1, which is characterized in that damping layer is plane layer, and is damped
The thickness of layer is identical as the thickness of outer shell.
3. blimp used in Roots blower as described in claim 1, which is characterized in that sound-absorbing outer layer by multiple continuous and
Cross section is formed in the cavity of regular hexagon.
4. blimp used in Roots blower as described in claim 1, which is characterized in that sound-absorbing outer layer by multiple continuous and
The cavity of circular in cross-section is formed.
5. blimp used in Roots blower as described in claim 1, which is characterized in that have in foamed ceramics acoustic board multiple
Microchannel.
6. blimp used in Roots blower as described in claim 1, which is characterized in that flexible particle, groove in groove
On be provided with separation net, the diameter of flexible particle is greater than the diameter of separation net, and the diameter of flexible particle is also greater than cylindrical bore
The diameter in road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820944558.9U CN208330749U (en) | 2018-06-20 | 2018-06-20 | Blimp used in Roots blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820944558.9U CN208330749U (en) | 2018-06-20 | 2018-06-20 | Blimp used in Roots blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208330749U true CN208330749U (en) | 2019-01-04 |
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ID=64771529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820944558.9U Expired - Fee Related CN208330749U (en) | 2018-06-20 | 2018-06-20 | Blimp used in Roots blower |
Country Status (1)
| Country | Link |
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| CN (1) | CN208330749U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109998346A (en) * | 2019-04-16 | 2019-07-12 | 天津市天瑞地毯有限公司 | A kind of carpet with electronic scale |
| CN114110409A (en) * | 2021-10-20 | 2022-03-01 | 北京天玛智控科技股份有限公司 | Double-layer noise reduction type coupler protective cover |
-
2018
- 2018-06-20 CN CN201820944558.9U patent/CN208330749U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109998346A (en) * | 2019-04-16 | 2019-07-12 | 天津市天瑞地毯有限公司 | A kind of carpet with electronic scale |
| CN114110409A (en) * | 2021-10-20 | 2022-03-01 | 北京天玛智控科技股份有限公司 | Double-layer noise reduction type coupler protective cover |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190104 Termination date: 20200620 |
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| CF01 | Termination of patent right due to non-payment of annual fee |