CN219622947U - Labyrinth type multistage muffler device - Google Patents
Labyrinth type multistage muffler device Download PDFInfo
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- CN219622947U CN219622947U CN202321153475.5U CN202321153475U CN219622947U CN 219622947 U CN219622947 U CN 219622947U CN 202321153475 U CN202321153475 U CN 202321153475U CN 219622947 U CN219622947 U CN 219622947U
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- frame body
- muffler
- silencing
- silencer
- dispersing
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Abstract
The utility model relates to the technical field of environment-friendly noise reduction of centrifugal fans, and discloses a labyrinth type multistage noise elimination device which comprises a muffler frame body, wherein fixing grooves are formed in corresponding positions of the inner wall of the muffler frame body, inner wall lining plates are clamped on the fixing grooves, and crest noise elimination cotton is adhered to the outer surface of each inner wall lining plate. This multistage silencing device of labyrinth, through the crest amortization cotton, can reduce the noise that centrifugal fan itself sent and the aerodynamic noise in the pipeline, when crest amortization cotton need clear up the change, can carry out the pull formula with crest amortization cotton and inner wall welt from the fixed slot and dismantle earlier, will paste the crest amortization cotton on the inner wall welt again and tear down and clear up the change, adopt this kind of mode, be convenient for dismantle and change crest amortization cotton, avoid amortization cotton unable dismantlement, can make to inhale on the sound cotton and adhere to the dust when long-time use, can lead to inhaling the sound cotton clearance difficulty, influence the phenomenon emergence of fan muffler's life.
Description
Technical Field
The utility model relates to the technical field of environment-friendly noise reduction of centrifugal fans, in particular to a labyrinth type multistage noise elimination device.
Background
The centrifugal fan is a machine which increases the pressure of gas and discharges the gas by means of input mechanical energy, and is a driven fluid machine. Centrifugal fans are widely used for ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and induced draft of boilers and industrial kilns; cooling and ventilation in air-conditioning devices and household appliances; drying and selecting grains; the centrifugal fan is used as a general mechanical device, has a wide application range, and can be applied in the fields of environmental protection, energy conservation and the like. However, during the operation process of the centrifugal fan, noise can be generated, the personal health is seriously affected, the environment is polluted, and a matched fan silencer is required to be installed at the outlet of the fan.
The common noise elimination device is a main device for noise reduction and noise elimination of the centrifugal fan, and meanwhile, the noise elimination device is internally provided with a silencer and other structures, so that the noise elimination device can not only restrain the noise of the centrifugal fan from spreading outwards, but also allow airflow to pass through. When the silencer is used, the silencer is arranged on the airflow pipeline of the centrifugal fan, so that noise emitted by the centrifugal fan during working and aerodynamic noise in the pipeline can be reduced, and the silencer is a common silencer function and use mode. In the prior art, the conventional fan muffler mainly adopts a block/sheet muffler. On one hand, the silencers are inconvenient to detach and replace, as the silencer at the outlet of the fan usually adopts silencing cotton to make noise reduction and silencing, and the silencing cotton is adhered in the shell of the silencer through glue and the like, so that the silencing cotton cannot be detached, but dust is attached to the sound-absorbing cotton when the silencer is used for a long time, the sound-absorbing cotton is difficult to clean, and the service life of the fan silencer is influenced; on the other hand, the silencer has poor silencing effect, and therefore, the labyrinth type multistage silencing device is provided.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the utility model provides a labyrinth type multistage silencing device so as to solve the technical problems.
(II) technical scheme
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a multistage silencing device of labyrinth, includes the silencer framework, tertiary ripple formula sound attenuation piece, second grade ripple formula sound attenuation piece and one-level ripple formula sound attenuation piece are transversely installed respectively to inner chamber central point put upper portion, central point put and central point put down of silencer framework, the fixed slot has all been seted up to the inner wall of silencer framework corresponding position, and all blocks on the fixed slot and be equipped with the inner wall welt, the crest amortization cotton has all been pasted to the inner wall welt surface. Through tertiary ripple formula sound attenuation piece, second grade ripple formula sound attenuation piece, one-level ripple formula sound attenuation piece and crest noise attenuation cotton, can reduce the noise that centrifugal fan itself sent and the aerodynamic noise in the pipeline, when crest noise attenuation cotton need clear up the change, can carry out the pull formula with crest noise attenuation cotton and inner wall welt from the fixed slot earlier and dismantle, tear the crest noise attenuation cotton of pasting on the inner wall welt again and clear up the change.
Preferably, an air outlet is formed in the center of the top of the muffler frame body, an outlet flange piece is additionally arranged at the top end of the air outlet, an air inlet is formed in the center of the bottom of the muffler frame body, and an inlet flange piece is additionally arranged at the bottom end of the air inlet. Therefore, the muffler frame body is arranged at the corresponding position of the centrifugal fan, and the centrifugal fan can be ensured to work normally through the air outlet and the air inlet.
Preferably, the lower part of the inner cavity of the muffler frame body is an inlet flow-dispersing area, inlet flow-dispersing sheets are additionally arranged in the inlet flow-dispersing area, and the inlet flow-dispersing sheets are in fan-shaped arrangement. Turbulence at the inlet of the muffler frame body can be effectively reduced, so that air flow in the muffler frame body is uniformly distributed, resistance is reduced, and the silencing effect is improved.
Preferably, the central position of the inner cavity of the muffler frame body is a middle silencing area, and the three-stage corrugated silencing sheets, the two-stage corrugated silencing sheets and the one-stage corrugated silencing sheets are arranged in parallel in the middle silencing area step by step. The first-stage corrugated type muffler sheet is a corrugated straight plate, and sequentially consists of a perforated plate, glass cloth and sound absorbing materials from inside to outside, and is fixed on a fixed groove, the material and the installation mode of the second-stage corrugated type muffler sheet and the third-stage corrugated type muffler sheet are consistent with those of the first-stage corrugated type muffler sheet, and the muffler provided by the utility model is an impedance composite type muffler and has better noise elimination effect on low-frequency noise and high-frequency noise.
Preferably, the upper part of the inner cavity of the muffler frame body is an outlet flow-dispersing area, outlet flow-dispersing sheets are additionally arranged in the outlet flow-dispersing area, and the outlet flow-dispersing sheets are in fan-shaped arrangement. Turbulence at the outlet of the muffler frame body can be effectively reduced, so that air flow in the muffler frame body is uniformly distributed, resistance is reduced, and the silencing effect is improved.
Preferably, an overhaul cover plate is additionally arranged at the center position of the front surface of the muffler frame body, a hinge and a clamp are arranged on the upper part and the lower part of one side of the overhaul cover plate, and the hinge is connected with the corresponding position of the front surface of the muffler frame body. The inner cavity structure of the muffler frame body can be overhauled by opening the overhauling cover plate.
(III) beneficial effects
Compared with the prior art, the utility model provides a labyrinth multistage muffler device, which has the following beneficial effects:
1. this labyrinth multistage noise eliminator, through tertiary ripple type sound attenuation piece, second grade ripple type sound attenuation piece, one-level ripple type sound attenuation piece and crest noise attenuation cotton, can reduce the noise that centrifugal fan itself sent and the aerodynamic noise in the pipeline, when crest noise attenuation cotton need clear up the change, can carry out the pull formula with crest noise attenuation cotton and inner wall welt from the fixed slot earlier and dismantle, tear the crest noise attenuation cotton of pasting on the inner wall welt off again and clear up the change, adopt this kind of mode, be convenient for dismantle and change crest noise attenuation cotton, thereby avoided the noise attenuation cotton unable dismantlement, but can make to inhale the dust on the sound absorption cotton when using for a long time, can lead to inhaling the sound absorption cotton clearance difficulty, influence fan muffler's life's phenomenon emergence, and through tertiary ripple type sound attenuation piece, second grade ripple type sound attenuation piece, one-level ripple type sound attenuation piece and crest noise attenuation cotton, can effectively improve the noise attenuation value.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is an enlarged schematic view of the structure of FIG. 1A according to the present utility model;
fig. 3 is an enlarged schematic view of the structure of fig. 1 at B according to the present utility model.
In the figure: 1. an inlet flange plate; 2. an air inlet; 3. a muffler frame; 4. an inlet flow-dispersing region; 5. an inlet flow-dispersing sheet; 6. a middle silencing zone; 7. a first-stage corrugated muffler sheet; 8. a second-stage corrugated muffler sheet; 9. three-stage corrugated silencing sheets; 10. wave crest silencing cotton; 11. an inner wall liner; 12. a fixing groove; 13. an outlet flow-dispersing region; 14. an outlet flow-dispersing sheet; 15. an air outlet; 16. an outlet flange plate; 17. an access panel.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The utility model provides a technical scheme, which comprises an inlet flange plate 1, an air inlet 2, a muffler frame body 3, an inlet flow dispersing area 4, an inlet flow dispersing plate 5, a middle silencing area 6, a primary corrugated silencing plate 7, a secondary corrugated silencing plate 8, a tertiary corrugated silencing plate 9, wave crest silencing cotton 10, an inner wall lining plate 11, a fixed groove 12, an outlet flow dispersing area 13, an outlet flow dispersing plate 14, an air outlet 15, an outlet flange plate 16 and an overhaul cover plate 17, wherein the upper part, the central position and the lower part of the central position of an inner cavity of the muffler frame body 3 are respectively and transversely provided with the tertiary corrugated silencing plate 9, the secondary corrugated silencing plate 8 and the primary corrugated silencing plate 7, the corresponding positions of the inner wall of the muffler frame body 3 are respectively provided with the fixed groove 12, the inner wall lining plate 11 is clamped on the fixed groove 12, and the wave crest silencing cotton 10 is adhered on the outer surface of the inner wall lining plate 11. Through tertiary ripple type noise elimination piece 9, second grade ripple type noise elimination piece 8, one-level ripple type noise elimination piece 7 and crest noise reduction cotton 10, can reduce the noise that centrifugal fan itself sent and the aerodynamic noise in the pipeline, when crest noise reduction cotton 10 need clear up the change, can carry out the pull formula with crest noise reduction cotton 10 and inner wall welt 11 from fixed slot 12 earlier and dismantle, tear crest noise reduction cotton 10 that will paste on inner wall welt 11 again and clear up the change.
Referring to fig. 1, an air outlet 15 is provided at a top center position of a muffler frame 3, an outlet flange 16 is provided at a top end of the air outlet 15, an air inlet 2 is provided at a bottom center position of the muffler frame 3, and an inlet flange 1 is provided at a bottom end of the air inlet 2. Therefore, the muffler frame body 3 is arranged at the corresponding position of the centrifugal fan, and the normal operation of the centrifugal fan can be ensured through the air outlet 15 and the air inlet 2. The lower part of the inner cavity of the muffler frame body 3 is provided with an inlet flow-dispersing area 4, inlet flow-dispersing sheets 5 are additionally arranged in the inlet flow-dispersing area 4, and the inlet flow-dispersing sheets 5 are arranged in a fan shape. Turbulence at the inlet of the muffler frame body 3 can be effectively reduced, so that air flow inside the muffler frame body 3 is uniformly distributed, resistance is reduced, and the silencing effect is improved.
Referring to fig. 2, the central position of the inner cavity of the muffler frame 3 is a middle silencing area 6, and three-stage corrugated silencing sheets 9, two-stage corrugated silencing sheets 8 and one-stage corrugated silencing sheet 7 are arranged in parallel in the middle silencing area 6 step by step. The primary corrugated silencing sheet 7 is a corrugated straight plate and sequentially comprises a perforated plate, glass cloth and sound absorbing materials from inside to outside, the primary corrugated silencing sheet 7 is fixed on the fixed groove 12, the material and the installation mode of the secondary corrugated silencing sheet 8 and the tertiary corrugated silencing sheet 9 are consistent with those of the primary corrugated silencing sheet 7, and the type of the silencer provided by the utility model is an impedance composite type silencer and has better silencing effect on low-frequency noise and high-frequency noise.
Referring to fig. 1, an outlet flow-dispersing area 13 is arranged at the upper part of the inner cavity of the muffler frame body 3, outlet flow-dispersing sheets 14 are additionally arranged in the outlet flow-dispersing area 13, and the outlet flow-dispersing sheets 14 are arranged in a fan shape. Turbulence at the outlet of the muffler frame body 3 can be effectively reduced, so that air flow inside the muffler frame body 3 is uniformly distributed, resistance is reduced, and the silencing effect is improved. An overhaul cover plate 17 is additionally arranged at the center of the front surface of the muffler frame body 3, hinges and clamps are arranged at the upper part and the lower part of one side of the overhaul cover plate 17, and the hinges are connected with the corresponding positions of the front surface of the muffler frame body 3. The inner cavity structure of the muffler frame 3 can be overhauled by opening the overhauling cover 17.
The working principle of the device is as follows: through tertiary ripple type noise elimination piece 9, second grade ripple type noise elimination piece 8, one-level ripple type noise elimination piece 7 and crest noise elimination cotton 10, can reduce the noise that centrifugal fan itself sent and the aerodynamic noise in the pipeline, when crest noise elimination cotton 10 need clear up the change, can carry out the pull formula with crest noise elimination cotton 10 and inner wall welt 11 from fixed slot 12 earlier and dismantle, tear crest noise elimination cotton 10 that will paste on inner wall welt 11 again and clear up the change, the inner chamber lower part of silencer framework 3 is for import sparse flow district 4, import sparse flow district 4's inside is equipped with import sparse flow piece 5 additional, and import sparse flow piece 5 is fan-shaped arrangement. Turbulence at the inlet of the muffler frame body 3 can be effectively reduced, so that the internal airflow of the muffler frame body 3 is uniformly distributed, the resistance is reduced, the silencing effect is improved, the upper part of the inner cavity of the muffler frame body 3 is provided with an outlet flow-dispersing area 13, the outlet flow-dispersing area 13 is internally provided with outlet flow-dispersing sheets 14, and the outlet flow-dispersing sheets 14 are in fan-shaped arrangement. Turbulence at the outlet of the muffler frame body 3 can be effectively reduced, so that air flow inside the muffler frame body 3 is uniformly distributed, resistance is reduced, and the silencing effect is improved.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a multistage silencing device of labyrinth, includes silencer framework (3), its characterized in that: the novel silencer comprises a silencer frame body (3), wherein a three-stage corrugated silencing sheet (9), a two-stage corrugated silencing sheet (8) and a one-stage corrugated silencing sheet (7) are transversely arranged on the upper part, the central position and the lower part of the central position of the inner cavity of the silencer frame body (3), fixing grooves (12) are formed in corresponding positions of the inner wall of the silencer frame body (3), inner wall lining plates (11) are respectively clamped on the fixing grooves (12), and crest silencing cotton (10) is adhered to the outer surface of each inner wall lining plate (11).
2. The labyrinth multi-stage muffler device as defined in claim 1, wherein: the silencer comprises a silencer frame body (3), wherein an air outlet (15) is formed in the center of the top of the silencer frame body (3), an outlet flange piece (16) is additionally arranged at the top end of the air outlet (15), an air inlet (2) is formed in the center of the bottom of the silencer frame body (3), and an inlet flange piece (1) is additionally arranged at the bottom end of the air inlet (2).
3. The labyrinth multi-stage muffler device as defined in claim 1, wherein: the silencer is characterized in that an inlet flow-dispersing area (4) is arranged at the lower part of an inner cavity of the silencer frame body (3), the inlet flow-dispersing area (4) is conical, inlet flow-dispersing sheets (5) are additionally arranged in the inlet flow-dispersing area (4), and the inlet flow-dispersing sheets (5) are in fan-shaped arrangement.
4. The labyrinth multi-stage muffler device as defined in claim 1, wherein: the inner cavity center position of the muffler frame body (3) is a middle silencing area (6), and three-stage corrugated silencing sheets (9), two-stage corrugated silencing sheets (8) and one-stage corrugated silencing sheet (7) are arranged in parallel in the middle silencing area (6) step by step.
5. The labyrinth multi-stage muffler device as defined in claim 1, wherein: the upper part of the inner cavity of the muffler frame body (3) is provided with an outlet flow-dispersing area (13), the outlet flow-dispersing area (13) is conical, outlet flow-dispersing sheets (14) are additionally arranged in the outlet flow-dispersing area (13), and the outlet flow-dispersing sheets (14) are in fan-shaped arrangement.
6. The labyrinth multi-stage muffler device as defined in claim 1, wherein: the front center position of the muffler frame body (3) is additionally provided with an overhaul cover plate (17), hinges and clamps are arranged on the upper portion and the lower portion of one side of the overhaul cover plate (17), and the hinges are connected with the front corresponding position of the muffler frame body (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321153475.5U CN219622947U (en) | 2023-05-12 | 2023-05-12 | Labyrinth type multistage muffler device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321153475.5U CN219622947U (en) | 2023-05-12 | 2023-05-12 | Labyrinth type multistage muffler device |
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| Publication Number | Publication Date |
|---|---|
| CN219622947U true CN219622947U (en) | 2023-09-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321153475.5U Active CN219622947U (en) | 2023-05-12 | 2023-05-12 | Labyrinth type multistage muffler device |
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| Country | Link |
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| CN (1) | CN219622947U (en) |
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2023
- 2023-05-12 CN CN202321153475.5U patent/CN219622947U/en active Active
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