CN208474122U - The silencing means of Roots blower - Google Patents
The silencing means of Roots blower Download PDFInfo
- Publication number
- CN208474122U CN208474122U CN201820986221.4U CN201820986221U CN208474122U CN 208474122 U CN208474122 U CN 208474122U CN 201820986221 U CN201820986221 U CN 201820986221U CN 208474122 U CN208474122 U CN 208474122U
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- China
- Prior art keywords
- noise reduction
- intubation
- roots blower
- noise
- chamber
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- 230000030279 gene silencing Effects 0.000 title claims abstract description 34
- 230000009467 reduction Effects 0.000 claims abstract description 97
- 238000002627 tracheal intubation Methods 0.000 claims abstract description 40
- 238000005192 partition Methods 0.000 claims abstract description 25
- 238000007789 sealing Methods 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 4
- 239000002184 metal Substances 0.000 claims description 11
- 239000011521 glass Substances 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 9
- 230000008676 import Effects 0.000 abstract description 4
- 230000005855 radiation Effects 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 12
- 230000008859 change Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 241000282376 Panthera tigris Species 0.000 description 1
- 239000012814 acoustic material Substances 0.000 description 1
- 230000001914 calming effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000002889 sympathetic effect Effects 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to a kind of silencing means of Roots blower, belong to air blower noise reduction accessory technical field.The silencing means of the Roots blower of the utility model includes tube body and sealing baffle, and tube body and sealing baffle inner wall are equipped with quieter material layer, and tube body is divided into three chambers by the cavity partition of tubular body setting；It is equipped with the first noise reduction intubation in second silencing cavity room the first noise reduction chamber and third noise reduction chamber are connected；It is equipped with the second noise reduction intubation in third silencing cavity room the second noise reduction chamber and exhaust outlet are connected, noise reduction is intubated upper array and is placed with bloop.Using three cavity expansion chamber noise-reducing structures, medium-high frequency erasure effect is improved；The form that connection type between silencing cavity uses perforated pipe and interpolation pipe to combine, improves low frequency erasure effect.The import and export pipeline noise is big when efficiently solving Roots blower work, the wide problem of radiation scope, and the pollution for improving factory's circle environment, reduction NOISE ON ENVIRONMENT has a significant effect.
Description
Technical field
The utility model relates to a kind of silencing means of Roots blower, belong to air blower noise reduction accessory technical field.
Background technique
As industry and the fast development of urban construction, environmental noise have become new pollution sources, seriously endanger people
Normal work, studying and living.Using the industry of Roots blower, the harm of noise is more serious, according to Roots blower
The work characteristics of machine, Roots blower sucks every time, the air quantity that is discharged is very big and has jumping phenomenon, to generate biggish make an uproar
Sound is referred to as " the sound tiger " of engineering goods, and especially in case of high pressures more so, and air quantity is bigger, pressure is higher, turns
Speed is faster, then noise is bigger, and modernizes mass production and wish that Roots blower function provides higher pressure and bigger wind
Amount.
Roots blower noise mainly includes mechanical noise and aerodynamic noise, and mechanical noise mainly has grating of gears, bearing
The aerodynamic noise of noise and pipeline vibration noise etc., air inlet and exhaust outlet includes rotational noise and eddy current crack again.Rotation is made an uproar
Sound is when the impeller of rotation skims over relatively narrow channel exit, and Pneumatic pressure and air velocity circumferentially has very big change
Change, so that periodically inhaling, exhaust and the appearances compression such as instantaneous and the air velocity and pressure fluctuation formed, the very atmospheric of generation
Kinetic noise.Eddy current crack is also known as turbulence noise, is since turbulent boundary layer and its disengaging cause caused by air-flow piercing device.
On the one hand, when impeller rotates, surface forms vortex, these vortex produce eddy current crack when surface divides；On the other hand, high
Body of calming the anger can also generate eddy current crack when aperture, bend are leaked and passed through to low-pressure area by gap.These noises add wind
Helmholtz's sympathetic response of machine admission space has just reached the noise of Roots blower and makes us insufferable degree.
In the industrial production of the prior art when using Roots blower, taking more is with blimp by entire air blast
Machine carries out sound insulation processing, or is carried out at the Roots blower the import and export pipeline that noise is big, radiation scope is wide with acoustic material
The noise reduction measure of package, the actual discharge for having resulted in many industrial enterprise's noises are unable to reach Industrial Enterprise Factory Boundary environmental noise
The standard of discharge.In order to improve fan performance, reduce noise pollution, meet environmental requirements, need to develop that a kind of structure is simple, system
Make the easy Roots blower silencing means of simple installation.
Summary of the invention
There is provided a kind of Roots blower pipeline silencing means for the technical issues of the utility model is solved, this is practical new
Type solves existing Roots blower, and the import and export pipeline noise is big at work, and the wide problem of radiation scope can obviously reduce and make an uproar
Sound pollutes the harm to environment.
To achieve the above object, the technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of Roots drum
The silencing means of blower includes tube body and sealing baffle, and tube body both ends are removably connected with sealing baffle, the sealing of tube body one end
Baffle is equipped with air inlet, and the sealing baffle of the other end is equipped with exhaust outlet, and tube body and sealing baffle inner wall are equipped with quieter material
Layer.Tubular body is equipped with the first cavity partition and the second cavity partition, and tube body is divided into the first noise reduction chamber, the second silencing cavity
Three room, third noise reduction chamber chambers.It is equipped with the first noise reduction in second silencing cavity room to be intubated, the first noise reduction is intubated across the first chamber
The first noise reduction chamber and third noise reduction chamber are connected for body partition and the second cavity partition.Second is equipped in third silencing cavity room to disappear
Sound intubation, the second noise reduction cannula diameter and exhaust outlet are isometrical, and second disappears across the second cavity partition and sealing baffle
Sound chamber and exhaust outlet conducting.The first noise reduction cannula diameter is intubated less than the second noise reduction, the first noise reduction intubation
With the isometrical bloop for being respectively equipped with array arrangement in the second noise reduction intubation.
Preferably, the cavity partition and noise reduction are intubated the metal piercing by metal framework and positioned at metal framework two sides
The noise reduction layer that plate and glass cloth, superfine glass silk flosssilk wadding are combined is constituted.
Preferably, the second cavity partition is equipped with bloop, to increase sound energy loss.
Preferably, the diameter ratio of first noise reduction intubation and the second noise reduction intubation is between 1:1.1~1.6.
Preferably, the diameter ratio of the bloop of the described first noise reduction intubation and the second noise reduction intubation between 1:2.0~
5.0。
Preferably, the punching rate of the bloop of first noise reduction intubation and the second noise reduction intubation is between 20.0%-
26.9%。
The silencing means of the Roots blower of the utility model is in use, air is discharged through Roots blower exhaust outlet by disappearing
Enter muffler the first noise reduction chamber at the air inlet of mixer, be intubated by the first noise reduction, a part of gas is directly passed to
Third noise reduction chamber, another part gas flow to the second noise reduction chamber via the bloop in the first noise reduction cannula wall；Second disappears
Most gases are intubated discharge silencing means via the second noise reduction in sound chamber, and the portion gas is by the former indoor gas of third silencing cavity
Body is impacted via hole in the second noise reduction cannula wall, further sound energy consumption, promotes noise elimination effect, and last gas is discharged noise reduction
Device.
The advantageous effects of the utility model:
1, the silencing means of the Roots blower of the utility model is improved using three cavity expansion chamber noise-reducing structures
High frequency erasure effect；The form that connection type between silencing cavity uses perforated pipe and interpolation pipe to combine, array on interpolation pipe
It is placed with bloop, improves low frequency erasure effect.
2, the silencing means of the Roots blower of the utility model, structure is simple, noise eradicating efficacy is good, use reliability
It is high.The import and export pipeline noise is big when efficiently solving Roots blower work, the wide problem of radiation scope, for improving factory's circle ring
Border, the pollution for reducing NOISE ON ENVIRONMENT have a significant effect.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the silencing means of the Roots blower of the utility model；
Fig. 2 is the structure sectional view of the noise reduction intubation of the utility model.
In figure: 1: tube body；2: sealing baffle；3: air inlet；4: exhaust outlet；5: cavity partition；6: noise reduction intubation；7: noise reduction
Chamber；8: bloop；
201: preceding sealing baffle；202: sealing baffle afterwards；
501: the first cavity partitions；502: the second cavity partitions；
601: the first noise reductions intubation；602: the second noise reductions intubation；
701: the first noise reduction chambers；702: the second noise reduction chambers；703: third noise reduction chamber；
901: metal framework；902: perforated metal panel；903: noise reduction layer.
Specific embodiment
The utility model is described further with reference to the accompanying drawing, specific embodiment does not limit the present invention.
A kind of silencing means of Roots blower includes tube body 1 and sealing baffle 2, and 1 both ends of tube body are removably connected with envelope
Mouth baffle 2, the preceding sealing baffle 201 of tube body one end are equipped with air inlet 3, and the rear sealing baffle 202 of the other end is equipped with exhaust
Mouth 4, tube body 1 and sealing 2 inner wall of baffle are equipped with quieter material layer.The first cavity partition 501 and the second cavity are equipped with inside tube body 1
Tube body is divided into 703 3 the first noise reduction chamber 701, the second noise reduction chamber 702, third noise reduction chamber chambers by partition 502, the
Two cavity partitions 502 are equipped with bloop 8, to increase sound energy loss, improve acoustical energy losses of the sound wave in muffler.Described
The punching rate 25% of the bloop 8 of first noise reduction intubation 601 and the second noise reduction intubation 602.
The first noise reduction intubation 601 is equipped in second noise reduction chamber 702, the first noise reduction intubation 601 passes through the first cavity partition
501 and second cavity partition 502 first noise reduction chamber 701 and third noise reduction chamber 703 are connected.In third noise reduction chamber 703
Equipped with the second noise reduction intubation 602, the second noise reduction is intubated 602 diameters and exhaust outlet 4 is isometrical, passes through the second cavity partition 502 with after
Second noise reduction chamber 702 and exhaust outlet 4 are connected sealing baffle 202.First noise reduction is intubated 601 diameters and disappears less than second
The diameter ratio of sound intubation 602, the first noise reduction intubation 601 and the second noise reduction intubation 602 is 1:1.5.First noise reduction intubation 601 and the
The isometrical bloop of array arrangement, the first noise reduction intubation 601 and the second noise reduction intubation 602 are respectively equipped in two noise reductions intubation 602
Bloop 8 diameter ratio be 1:5.0.
The perforated metal panel of the cavity partition 5 and noise reduction intubation 6 by metal framework 901 and positioned at metal framework two sides
902, the noise reduction layer 903 that glass cloth and superfine glass silk flosssilk wadding are combined is constituted.
The silencing means of the Roots blower of the utility model is in use, air is discharged through Roots blower exhaust outlet by disappearing
Enter the first noise reduction of muffler chamber 701 at the air inlet 3 of mixer, by the first noise reduction intubation 601, a part of gas is direct
It is passed to third noise reduction chamber 703, another part gas flows to the second noise reduction via the bloop that the first noise reduction is intubated on 601 walls
Chamber 702；Most gases are via 602 discharge silencing means of the second noise reduction intubation in second noise reduction chamber 702, the portion gas by
The former indoor gas of third silencing cavity is impacted via hole in the second noise reduction cannula wall, further sound energy consumption, promotes effect of eliminating the noise
Fruit, last gas are discharged silencing means.
It should be pointed out that above-mentioned preferred embodiment is only to illustrate the technical ideas and features of the present invention, purpose
It is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly, this reality can not be limited with this
With novel protection scope.All equivalent change or modifications according to made by the spirit of the present invention essence, should all cover in this reality
Within novel protection scope.
Claims (6)
1. the silencing means of Roots blower, including tube body and sealing baffle, tube body both ends are removably connected with sealing baffle, manage
The sealing baffle of body one end is equipped with air inlet, and the sealing baffle of the other end is equipped with exhaust outlet, it is characterised in that: the tube body
It is equipped with quieter material layer with sealing baffle inner wall, tubular body is equipped with the first cavity partition and the second cavity partition, by tube body point
For three the first noise reduction chamber, the second noise reduction chamber, third noise reduction chamber chambers；The first noise reduction is equipped in second silencing cavity room to insert
Pipe, the first noise reduction intubation lead the first noise reduction chamber and third noise reduction chamber across the first cavity partition and the second cavity partition
It is logical；It is equipped with the second noise reduction in third silencing cavity room to be intubated, the second noise reduction cannula diameter and exhaust outlet are isometrical, pass through second
The second noise reduction chamber and exhaust outlet are connected for cavity partition and sealing baffle；The first noise reduction cannula diameter disappears less than second
Sound intubation, the first noise reduction intubation and the second noise reduction are intubated the isometrical bloop for being respectively equipped with array arrangement.
2. the silencing means of Roots blower according to claim 1, it is characterised in that: the cavity partition and noise reduction
What perforated metal panel and glass cloth, superfine glass silk flosssilk wadding of the intubation by metal framework and positioned at metal framework two sides were combined disappears
Sound-absorbing layer is constituted.
3. the silencing means of Roots blower according to claim 1, it is characterised in that: on the second cavity partition
Equipped with bloop.
4. the silencing means of Roots blower according to claim 1, it is characterised in that: the described first noise reduction intubation and
The diameter ratio of second noise reduction intubation is between 1:1.1~1.6.
5. the silencing means of Roots blower according to claim 1, it is characterised in that: the described first noise reduction intubation and
The diameter ratio of bloop in second noise reduction intubation is between 1:2.0~5.0.
6. the silencing means of Roots blower according to claim 1, it is characterised in that: the described first noise reduction intubation and
The punching rate of the bloop of second noise reduction intubation is between 20.0%-26.9%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820986221.4U CN208474122U (en) | 2018-06-26 | 2018-06-26 | The silencing means of Roots blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820986221.4U CN208474122U (en) | 2018-06-26 | 2018-06-26 | The silencing means of Roots blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208474122U true CN208474122U (en) | 2019-02-05 |
Family
ID=65215193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820986221.4U Expired - Fee Related CN208474122U (en) | 2018-06-26 | 2018-06-26 | The silencing means of Roots blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208474122U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112833033A (en) * | 2021-01-06 | 2021-05-25 | 苏州保邦电气有限公司 | Silencer of air blower |
| CN114992418A (en) * | 2022-07-12 | 2022-09-02 | 合肥美的电冰箱有限公司 | Silencer assembly for pipeline, pipeline silencing device and refrigerator |
-
2018
- 2018-06-26 CN CN201820986221.4U patent/CN208474122U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112833033A (en) * | 2021-01-06 | 2021-05-25 | 苏州保邦电气有限公司 | Silencer of air blower |
| CN114992418A (en) * | 2022-07-12 | 2022-09-02 | 合肥美的电冰箱有限公司 | Silencer assembly for pipeline, pipeline silencing device and refrigerator |
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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: 20190205 Termination date: 20200626 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |