CN107956751A - Silencing apparatus and sweeping machine - Google Patents
Silencing apparatus and sweeping machine Download PDFInfo
- Publication number
- CN107956751A CN107956751A CN201711214596.5A CN201711214596A CN107956751A CN 107956751 A CN107956751 A CN 107956751A CN 201711214596 A CN201711214596 A CN 201711214596A CN 107956751 A CN107956751 A CN 107956751A
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- Prior art keywords
- noise elimination
- chamber
- silencing apparatus
- group
- noise
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Links
- 230000030279 gene silencing Effects 0.000 title claims abstract description 48
- 238000010408 sweeping Methods 0.000 title abstract description 10
- 230000008030 elimination Effects 0.000 claims abstract description 127
- 238000003379 elimination reaction Methods 0.000 claims abstract description 127
- 238000007791 dehumidification Methods 0.000 claims description 18
- 241001417527 Pempheridae Species 0.000 claims description 5
- 230000002745 absorbent Effects 0.000 claims description 5
- 239000002250 absorbent Substances 0.000 claims description 5
- 239000000428 dust Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 238000005119 centrifugation Methods 0.000 claims 1
- 230000008602 contraction Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 9
- 230000003584 silencer Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000003670 easy-to-clean Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
- F04D29/665—Sound attenuation by means of resonance chambers or interference
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The present invention relates to a kind of silencing apparatus and sweeping machine, wherein, silencing apparatus includes housing and the first noise elimination structure, housing is equipped with air inlet and air outlet, first noise elimination structure is arranged in the passage formed between air inlet and air outlet, first noise elimination structure includes the first group of noise elimination cavity and second group of noise elimination cavity of communicating passage, by open communication between adjacent two chamber in first group of noise elimination cavity, is connected between adjacent two chamber in second group of noise elimination cavity by porous plate.The area of first group of noise elimination cavity split shed of the present invention and the sectional area of chamber have default proportionate relationship, cause reflection and the interference of sound wave to eliminate the noise using the expansion of area of section, contraction, can preferably eliminate the noise to intermediate frequency and low-frequency sound wave；Second group of noise elimination cavity can eliminate the noise intermediate frequency and high frequency sound wave using the combination of porous plate and chamber；Therefore, the embodiment of the present invention can eliminate the noise high, medium and low frequency range sound wave, suitable for the field for requiring wideband to eliminate the noise.
Description
Technical field
The present invention relates to engineering machinery field, more particularly to a kind of silencing apparatus and sweeping machine.
Background technology
Sweeping machine is more in the morning or night operation, its work noise will necessarily produce the life of operator and surrounding resident
Certain interference, and fan noise is its main sound source, reduces fan noise, is had for lifting product competitiveness very great
Realistic meaning.By installing silencer in fan outlet as one of effective scheme of reduction fan noise.Silencer is eliminated the noise by it
Mechanism, can be divided into dissipative muffler, reactive muffler and impedance muffler etc..The noise-cancelling theory of dissipative muffler is to utilize
Sound-absorbing material in pipeline, the partly absorbing acoustic energy along pipe transmmision.Reactive muffler is to utilize variously-shaped, size pipe
Road and perforated pipe resonance sound-absorbing structure etc., cause sound wave impedance mismatching in systems, make sound wave in pipeline and resonant cavity back and forth
Reflection, consume, so as to achieve the purpose that noise elimination.Impedance muffler is to combine dissipative muffler and reactive muffler
Come, the purpose eliminated the noise so as to fulfill wideband.
Fans silencer uses resistive or single noise elimination structure more at present, for this broadband noise noise elimination effect of wind turbine
Difference, and due to the special operating mode of sweeping machine, more with dust in fan outlet air, resistance noise reduction structure is easily blocked up
Plug, and fan outlet humidity is bigger than normal, and after working long hours, noise elimination effect tends to decrease, and the service life of silencer reduces.Lifting
Fans silencer noise elimination effect and become those skilled in the art's technical problem in the urgent need to address easy to clean.
The content of the invention
The purpose of the present invention is to propose to a kind of silencing apparatus and sweeping machine, wherein, silencing apparatus can solve broadband noise
The problem of noise elimination effect is poor.
To achieve the above object, the present invention provides a kind of silencing apparatus, it includes housing and the first noise elimination structure, housing
Equipped with air inlet and air outlet, the first noise elimination structure is arranged in the passage formed between air inlet and air outlet, and first, which eliminates the noise, ties
Structure includes the first group of noise elimination cavity and second group of noise elimination cavity of communicating passage, by opening between adjacent two chamber in first group of noise elimination cavity
Mouth connects, and is connected between adjacent two chamber in second group of noise elimination cavity by porous plate.
One preferably or in alternative embodiment, first group of noise elimination cavity includes the first chamber and the second chamber, and the first chamber is equipped with first
Opening and the second opening, the first open communication passage, second the second chamber of open communication.
One preferably or in alternative embodiment, the area of the area of the first opening and the second opening is the section of the first chamber
Long-pending 1/4~1/3.
One preferably or in alternative embodiment, first group of noise elimination cavity includes the 3rd chamber, and the 3rd chamber is equipped with the second chamber of connection
3rd opening.
One preferably or in alternative embodiment, the area of the 3rd opening is the 1/3~1/2 of the sectional area of the second chamber.
One preferably or in alternative embodiment, first group of noise elimination cavity includes two the 3rd chambers, and two the 3rd chambers are located at respectively
The both sides of second chamber.
One preferably or in alternative embodiment, second group of noise elimination cavity includes the 4th chamber and the 5th chamber, and the 4th chamber is equipped with first
Porous plate and the second porous plate, the first porous plate communicating passage, the second porous plate connect the 5th chamber.
One preferably or in alternative embodiment, the volume of the 4th chamber is at least twice of the volume of the 5th chamber.
One preferably or in alternative embodiment, the first noise elimination structure includes two second group of noise elimination cavities, and two second group disappears
The operatic tunes is respectively positioned at the both sides of first group of noise elimination cavity.
One preferably or in alternative embodiment, the first noise elimination structure includes managing, the first end communicating passage of pipe, and the second of pipe
End seal is closed.
One preferably or in alternative embodiment, pipe is arranged in first group of noise elimination cavity and/or second group of noise elimination cavity.
One preferably or in alternative embodiment, the first noise elimination structure includes at least two pipes, the length difference or phase of each pipe
Together.
One preferably or in alternative embodiment, the side that the first noise elimination structure is connected with passage is arranged on the gas that air inlet introduces
Flow the side in direction.
One preferably or in alternative embodiment, silencing apparatus includes dedusting dehumidification structure, and dedusting dehumidification structure is arranged on passage
Interior and communicating passage.
One preferably or in alternative embodiment, the gas introduced to air inlet is met in the side that dedusting dehumidification structure is connected with passage
Flow direction.
One preferably or in alternative embodiment, dedusting dehumidification structure includes chamber shell, and chamber shell includes meeting what is set to air inlet
3rd porous plate, chamber shell is interior to be equipped with dust-catching board and absorbent material.
One preferably or in alternative embodiment, silencing apparatus includes the second noise elimination structure, and the second noise elimination structure is arranged on passage
It is interior, there is pre-determined distance to form expansion cavity between the second noise elimination structure and the first noise elimination structure.
One preferably or in alternative embodiment, the second noise elimination structure relative to the first noise elimination structure close to air outlet, first
Noise elimination structure is relative to the second noise elimination structure close to air inlet.
One preferably or in alternative embodiment, the second noise elimination structure is resistance noise reduction structure.
To achieve the above object, the present invention provides a kind of sweeping machine, it includes above-mentioned silencing apparatus.
One preferably or in alternative embodiment, road sweeper includes centrifugal blower, and silencing apparatus is arranged on the air draft of centrifugal blower
End.
Based on above-mentioned technical proposal, the present invention at least has the advantages that：
The embodiment of the present invention sets the first noise elimination structure in the passage of housing, and the first noise elimination structure includes communicating passage
First group of noise elimination cavity and second group of noise elimination cavity；Pass through open communication, the face of opening between adjacent two chamber in first group of noise elimination cavity
The sectional area of product and chamber has default proportionate relationship, and the reflection and interference of sound wave are caused using the expansion of area of section, contraction
To eliminate the noise, can preferably eliminate the noise to intermediate frequency and low-frequency sound wave；Lead between adjacent two chamber in second group of noise elimination cavity
Porous plate connection is crossed, using the combination of porous plate and chamber, can be eliminated the noise to intermediate frequency and high frequency sound wave；Therefore, the present invention is real
High, medium and low frequency range sound wave can be eliminated the noise by applying example, suitable for the field for requiring wideband to eliminate the noise.
Brief description of the drawings
Attached drawing described herein is used for providing a further understanding of the present invention, forms the part of the application, this hair
Bright schematic description and description is used to explain the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the main view and partial schematic sectional view for the silencing apparatus that the present invention implements offer；
Fig. 2 is the schematic rear view for the silencing apparatus that the present invention implements offer；
Fig. 3 is the A-A schematic cross-sectional views of Fig. 1；
Fig. 4 is the schematic diagram after the first noise elimination structure that the present invention implements to provide is tilted a certain angle；
Fig. 5 is the B-B schematic cross-sectional views of Fig. 4；
Fig. 6 is the schematic diagram for the dedusting dehumidification structure that the present invention implements offer；
Fig. 7 is the C-C schematic cross-sectional views of Fig. 6.
Attached figure label：
1- housings；11- air inlets；12- air outlets；13- sides installing port；
The first noise elimination structures of 2-；
First group of noise elimination cavity of 21-；The first chambers of 211-；The second chambers of 212-；213- first is open；214- second is open；215-
3rd chamber；216- the 3rd is open；
Second group of noise elimination cavity of 22-；The 4th chambers of 221-；The 5th chambers of 222-；The first porous plates of 223-；The second porous plates of 224-；
23- is managed；
3- dedusting dehumidification structures；31- chamber shells；The 3rd porous plates of 32-；33- dust-catching boards；34- absorbent materials；
The second noise elimination structures of 4-；
5- expansion cavities.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in embodiment is clearly and completely retouched
State.Obviously, described embodiment is only the part of the embodiment of the present invention, instead of all the embodiments.Based on this hair
Bright embodiment, the every other implementation that those of ordinary skill in the art are obtained without creative efforts
Example, belongs to the scope of protection of the invention.
In the description of the present invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", "front", "rear",
The orientation or position relationship of the instruction such as "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " is based on attached drawing institutes
The orientation or position relationship shown, is for only for ease of the description present invention and simplifies description, rather than instruction or the dress for implying meaning
Put or element there must be specific orientation, with specific azimuth configuration and operation, therefore it is not intended that the present invention is protected
The limitation of scope.
As shown in Figure 1, Figure 2, Figure 3 shows, it is silencing apparatus provided in an embodiment of the present invention, it includes the noise elimination of housing 1 and first
Structure 2, housing 1 are equipped with air inlet 11 and air outlet 12, form passage in housing 1 between air inlet 11 and air outlet 12, and first
Noise elimination structure 2 is arranged in passage.First noise elimination structure 2 includes the first group of noise elimination cavity 21 and second group of noise elimination cavity of communicating passage
22.By open communication, the area of opening and the sectional area of chamber with default between adjacent two chamber in first group of noise elimination cavity 21
Proportionate relationship, using the expansion of area of section, shrink and cause reflection and the interference of sound wave and eliminate the noise, can be preferably right
Intermediate frequency and low-frequency sound wave are eliminated the noise.Connected between adjacent two chamber in second group of noise elimination cavity 22 by porous plate, utilization is porous
The combination of plate and chamber, can eliminate the noise intermediate frequency and high frequency sound wave.
Therefore, the embodiment of the present invention can eliminate the noise high, medium and low frequency range sound wave, suitable for requiring wideband noise elimination
Field.
Silencing apparatus provided in an embodiment of the present invention has full frequency band noise elimination effect, and provided in an embodiment of the present invention first
Noise elimination structure 2 is combined type reactive muffling structure, has high temperature resistant, moisture resistance relative to resistance noise reduction structure of the prior art
It is wet, be not easy to plug, it is easy to clean the characteristics of.Therefore, suitable for carrying out to the wind turbine of sweeping machine noise reduction, (wind turbine of sweeping machine is made an uproar
Audio frequency range is wider).
Silencing apparatus provided in an embodiment of the present invention is the wideband silencing apparatus of absorbable different frequency range noise, and can
Multiple combinations form is had according to different work operating mode, is described in detail with reference to embodiment.
As shown in figure 5, first group of noise elimination cavity 21 in the embodiment of the present invention can include the first chamber 211 and the second chamber 212,
First chamber 211 is equipped with the first opening 213 and the second opening 214, the first 213 communicating passages of opening, 214 connection second of the second opening
Chamber 212.First chamber 211 mainly eliminates Middle and low frequency noise.
Alternatively, the area of the first opening 213 and the area of the second opening 214 are the 1/4 of the sectional area of the first chamber 211
~1/3.Preferably, the area of the first opening 213 and the area equation of the second opening 214.
In above-described embodiment, first group of noise elimination cavity 21 can also include the 3rd chamber 215, and the 3rd chamber 215 is equipped with connection second
3rd opening 216 of chamber 212.
Second chamber 211 and the 3rd chamber 215 are mainly used for eliminating the low-frequency noise of special frequency channel.
One preferably or in alternative embodiment, first group of noise elimination cavity 21 can include two the 3rd chambers 215, two the 3rd chambers
215 are located at the both sides of the second chamber 212 respectively.
Alternatively, the area of the 3rd opening 216 is the 1/3~1/2 of the sectional area of the second chamber 212.
Further, the area of the 3rd opening 216 of two the 3rd chambers 215 may be the same or different, preferably two
The area of 3rd opening 216 of the 3rd chamber 215 is different, and occurrence can be calculated according to the sound wave frequency range for wishing to eliminate.
Second group of noise elimination cavity 22 in the embodiment of the present invention can include the 4th chamber 221 and the 5th chamber 222, the 4th chamber 221
Equipped with the first porous plate 223 and the second porous plate 224,223 communicating passage of the first porous plate, the second porous plate 224 connection the 5th
Chamber 222.
Alternatively, the volume of the 4th chamber 221 is at least twice of the volume of the 5th chamber 222.
In above-described embodiment, the punching rate of the first porous plate 223 and the second porous plate 224 can be different.
One preferably or in alternative embodiment, the first noise elimination structure 2 can include two second group of noise elimination cavities 22, two the
Two groups of noise elimination cavities 22 can be respectively positioned at the both sides (as shown in Figure 4) of first group of noise elimination cavity 21.
The first noise elimination structure 2 in the embodiment of the present invention can also include pipe 23, the first end communicating passage of pipe 23, pipe 23
Second end closing.
One preferably or in alternative embodiment, pipe 23 can be arranged in first group of noise elimination cavity 21 and/or second group of noise elimination cavity
In 22.Shown in Fig. 5, pipe 23 is arranged in second group of noise elimination cavity 22.
Alternatively, the first noise elimination structure 2 can include at least two pipes 23, and the length of each pipe 23 can be different or can also
Identical, the length of each pipe 23 can be calculated according to different characteristic frequency.
The first noise elimination structure 2 in the various embodiments described above is combined type reactive muffling structure, it includes passing through open communication
First group of noise elimination cavity 21, by porous plate connect second group of noise elimination cavity 22 and pipe 23, can effectively reduce high frequency, in
Frequently, low frequency, wind turbine fundamental frequency and its frequency multiplication noise etc..
Cause crushing to avoid the air-flow that air inlet 11 introduces from flowing directly into the first noise elimination structure 2, the first noise elimination structure 2 with
The side of passage connection is arranged on the side for the airflow direction that air inlet 11 introduces.Specifically, the first opening 213 and the first porous plate
223 are arranged on the side for the airflow direction that air inlet 11 introduces.
Silencing apparatus provided in an embodiment of the present invention can also include dedusting dehumidification structure 3, and dedusting dehumidification structure 3 is arranged on logical
In road and communicating passage, the dust and moisture in silencing apparatus interior air-flow can be effectively reduced, lift silencing apparatus uses the longevity
Life and noise reduction.
In above-described embodiment, the airflow direction introduced to air inlet 11 is met in the side that dedusting dehumidification structure 3 is connected with passage
Set, so that air-flow flows directly into dedusting dehumidification structure 3, the air-flow introduced by air inlet 11 carries out dedusting dehumidifying first, and
It can to a certain extent be eliminated the noise by dedusting dehumidification structure 3, then further be eliminated the noise by the first noise elimination structure 2, energy
Enough improve the service life and noise elimination effect of the first noise elimination structure 2.
One preferably or in alternative embodiment, as shown in Figure 6, Figure 7, dedusting dehumidification structure 3 can include chamber shell 31, chamber shell
31 include meeting the 3rd porous plate 32 set to air inlet 11, and dust-catching board 33 and absorbent material 34 are equipped with chamber shell 31.By setting
Dust-catching board 33 and absorbent material 34 are put, can effectively reduce dust and moisture in silencing apparatus, and eliminate the noise with preferable
Effect, extends the service life of silencing apparatus.
Alternatively, the frontal projected area of chamber shell 31 can be more than the sectional area of air inlet 11.Preferably, the positive throwing of chamber shell 31
Shadow area is 1.3~1.6 times of the sectional area of air inlet 11.The thickness of chamber shell 31 should be less than the thickness of passage, the thickness of chamber shell 31
Degree is preferably the 1/4~1/3 of the thickness of passage.
Alternatively, the 3rd porous plate 32 has certain angle with horizontal plane, and preferably 45 °~65 ° of angular range, this section is removed
Dirt effect is optimal, and has certain noise reduction.Aperture on 3rd porous plate 32 can be 1mm~2mm, and punching rate can
Think 5%~8%.
Above-mentioned dedusting dehumidification structure 3 can not only effectively reduce dust and moisture, have preferable noise elimination effect, and extension disappears
The service life of acoustic device, and it is simple in structure, be easily installed.
Silencing apparatus provided in an embodiment of the present invention can also include the second noise elimination structure 4, and the second noise elimination structure 4 is arranged on logical
There is pre-determined distance to form expansion cavity 5 in road, between the second noise elimination structure 4 and the first noise elimination structure 2.
Alternatively, expansion cavity 5 is arranged between air inlet 11 and air outlet 12, is the cavity of a cuboid, expansion cavity 5
Sectional area is more than more than twice of the sectional area of sectional area/air outlet 12 of air inlet 11, is preferably the 3 of 11 sectional area of air inlet
~6 times.
Above-described embodiment makes to be formed expansion cavity 5, its divergence ratio and 11 area of air inlet in housing 1 with corresponding ratio pass
System, on the premise of other noise elimination structures are not increased, can also effectively reduce noise.
In above-described embodiment, relative to the first noise elimination structure 2 close to air outlet 12, first eliminates the noise ties the second noise elimination structure 4
Structure 2 is relative to the second noise elimination structure 4 close to air inlet 11.
Alternatively, the second noise elimination structure 4 is resistance noise reduction structure.Resistive noise-reducing structure is located at air outlet 12, and can be with
It is arranged on using detachable connection mode in housing 1.
Such as：Second noise elimination structure 4 can specifically include multiple bloops and snap-in structure, and multiple bloops can pass through
Snap-in structure is installed on the slot of 1 bottom plate of housing, and the quantity of bloop can be changed according to the actual size in housing 1
Become, be preferably three.
The first noise elimination structure 2 in a specific embodiment of silencing apparatus is set forth below, dedusting dehumidification structure 3 and second is eliminated the noise
The specific installation site of structure 4.
The foreboard of housing 1 sets air inlet 11, and air inlet 11 is preferably disposed on the side of foreboard upper end.The backboard of housing 1
Downside set air outlet 12.The sectional area of air outlet 12 is preferably 2~2.5 times of the sectional area of air inlet 11.
The side plate adjacent with foreboard of housing 1 is equipped with the side installing port 13 for being used for installing the first noise elimination structure 2, side installation
Mouth 13 is contour with air inlet 11, and side installing port 13 is located remotely from the side plate of air inlet 11, can conveniently arrangement first eliminate the noise
Structure 2, and this kind of layout type influences minimum to its air circulation.
Alternatively, the first noise elimination structure 2 is connected parallel to air inlet 11 and with side installing port 13.Dedusting dehumidification structure 3 is set
It is placed on the backboard of housing 1, and face air inlet 11.Second noise elimination structure 4 is installed on the bottom plate of housing 1 and is located at air outlet
At 12.
The embodiment of the present invention additionally provides a kind of road sweeper, it includes above-mentioned silencing apparatus.
Road sweeper in above-described embodiment includes centrifugal blower, and silencing apparatus provided in this embodiment is arranged on centrifugal blower
Air outlet.
In the description of the present invention, it is to be understood that limit zero using the word such as " first ", " second ", " the 3rd "
Component, it is only for easy to be distinguished to above-mentioned parts, such as do not have Stated otherwise, above-mentioned word does not have special contain
Justice, therefore it is not intended that limiting the scope of the invention.
Finally it should be noted that:The above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof；To the greatest extent
The present invention is described in detail with reference to preferred embodiments for pipe, those of ordinary skills in the art should understand that：Still
It can modify to the embodiment of the present invention or equivalent substitution is carried out to some technical characteristics；Without departing from this hair
The spirit of bright technical solution, it should all cover among the claimed technical solution scope of the present invention.
Claims (21)
- A kind of 1. silencing apparatus, it is characterised in that：Including housing (1) and the first noise elimination structure (2), the housing (1) be equipped with into Air port (11) and air outlet (12), first noise elimination structure (2) be arranged on the air inlet (11) and the air outlet (12) it Between in the passage that is formed, first noise elimination structure (2) includes first group of noise elimination cavity (21) for connecting the passage and second group Noise elimination cavity (22), passes through open communication, second group of noise elimination cavity between adjacent two chamber in first group of noise elimination cavity (21) (22) connected between adjacent two chamber in by porous plate.
- 2. silencing apparatus as claimed in claim 1, it is characterised in that：First group of noise elimination cavity (21) includes the first chamber (211) and the second chamber (212), first chamber (211) are equipped with the first opening (213) and the second opening (214), and described first opens Mouth (213) connects the passage, and second opening (214) connects second chamber (212).
- 3. silencing apparatus as claimed in claim 2, it is characterised in that：The area and described second of first opening (213) The area of opening (214) is the 1/4~1/3 of the sectional area of first chamber (211).
- 4. silencing apparatus as claimed in claim 2, it is characterised in that：First group of noise elimination cavity (21) includes the 3rd chamber (215), the 3rd chamber (215) is equipped with the 3rd opening (216) for connecting second chamber (212).
- 5. silencing apparatus as claimed in claim 4, it is characterised in that：The area of 3rd opening (216) is described second The 1/3~1/2 of the sectional area of chamber (212).
- 6. silencing apparatus as claimed in claim 4, it is characterised in that：First group of noise elimination cavity (21) includes two described the Three chambers (215), two the 3rd chambers (215) are located at the both sides of second chamber (212) respectively.
- 7. silencing apparatus as claimed in claim 1, it is characterised in that：Second group of noise elimination cavity (22) includes the 4th chamber (221) and the 5th chamber (222), the 4th chamber (221) is equipped with the first porous plate (223) and the second porous plate (224), and described One porous plate (223) connects the passage, and second porous plate (224) connects the 5th chamber (222).
- 8. silencing apparatus as claimed in claim 7, it is characterised in that：The volume of 4th chamber (221) is at least described Twice of the volume of five chambers (222).
- 9. silencing apparatus as claimed in claim 1, it is characterised in that：First noise elimination structure (2) includes two described the Two groups of noise elimination cavities (22), two second group of noise elimination cavities (22) are located at the both sides of first group of noise elimination cavity (21) respectively.
- 10. silencing apparatus as claimed in claim 1, it is characterised in that：First noise elimination structure (2) includes pipe (23), institute The first end for stating pipe (23) connects the passage, the second end closing of the pipe (23).
- 11. silencing apparatus as claimed in claim 10, it is characterised in that：The pipe (23) is arranged in first group of noise elimination cavity (21) and/or in second group of noise elimination cavity (22).
- 12. silencing apparatus as claimed in claim 10, it is characterised in that：First noise elimination structure (2) includes at least two The pipe (23), the length of each pipe (23) are similar and different.
- 13. silencing apparatus as claimed in claim 1, it is characterised in that：First noise elimination structure (2) connects with the passage Side be arranged on the air inlet (11) introduce airflow direction side.
- 14. silencing apparatus as claimed in claim 1, it is characterised in that：Including dedusting dehumidification structure (3), the dedusting dehumidifying Structure (3) is arranged in the passage and the connection passage.
- 15. silencing apparatus as claimed in claim 14, it is characterised in that：The dedusting dehumidification structure (3) connects with the passage Meet the airflow direction introduced to the air inlet (11) in logical side.
- 16. silencing apparatus as claimed in claim 14, it is characterised in that：The dedusting dehumidification structure (3) includes chamber shell (31), The chamber shell (31) includes meeting the 3rd porous plate (32) set to the air inlet (11), and dust suction is equipped with the chamber shell (31) Plate (33) and absorbent material (34).
- 17. silencing apparatus as claimed in claim 1, it is characterised in that：Including the second noise elimination structure (4), described second eliminates the noise Structure (4) be arranged on the passage in, between second noise elimination structure (4) and first noise elimination structure (2) have preset away from From to form expansion cavity (5).
- 18. silencing apparatus as claimed in claim 17, it is characterised in that：Second noise elimination structure (4) is relative to described One noise elimination structure (2) is close to the air outlet (12), and first noise elimination structure (2) is relative to second noise elimination structure (4) Close to the air inlet (11).
- 19. silencing apparatus as claimed in claim 17, it is characterised in that：Second noise elimination structure (4) is resistance noise reduction knot Structure.
- A kind of 20. road sweeper, it is characterised in that：Including such as claim 1~19 any one of them silencing apparatus.
- 21. road sweeper as claimed in claim 20, it is characterised in that：Including centrifugal blower, the silencing apparatus is arranged on centrifugation The air outlet of wind turbine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711214596.5A CN107956751B (en) | 2017-11-28 | 2017-11-28 | Silencing device and sweeping machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711214596.5A CN107956751B (en) | 2017-11-28 | 2017-11-28 | Silencing device and sweeping machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107956751A true CN107956751A (en) | 2018-04-24 |
| CN107956751B CN107956751B (en) | 2023-10-31 |
Family
ID=61959539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711214596.5A Active CN107956751B (en) | 2017-11-28 | 2017-11-28 | Silencing device and sweeping machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107956751B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108730239A (en) * | 2018-06-01 | 2018-11-02 | 徐工集团工程机械有限公司 | Noise-eliminating device for air-blower and road cleaning vehicle |
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| GB748943A (en) * | 1953-03-25 | 1956-05-16 | Mcfarlane Harrison Ltd | Improvements in or relating to exhaust silencers |
| JPH0266396A (en) * | 1988-05-20 | 1990-03-06 | Sankyo Kogyo Kk | Silencer device for feed air duct |
| CN102392717A (en) * | 2011-10-25 | 2012-03-28 | 湛江市华夏消声器有限公司 | Automobile silencer with five chambers |
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|---|---|
| CN107956751B (en) | 2023-10-31 |
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