CN211820104U - Silencer special for centrifugal fan - Google Patents
Silencer special for centrifugal fan Download PDFInfo
- Publication number
- CN211820104U CN211820104U CN201922364294.7U CN201922364294U CN211820104U CN 211820104 U CN211820104 U CN 211820104U CN 201922364294 U CN201922364294 U CN 201922364294U CN 211820104 U CN211820104 U CN 211820104U
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- Prior art keywords
- centrifugal fan
- flange
- silencer
- sound
- absorbing layer
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- 230000003584 silencer Effects 0.000 title claims abstract description 38
- 230000007246 mechanism Effects 0.000 claims abstract description 7
- 238000013016 damping Methods 0.000 claims description 10
- 230000030279 gene silencing Effects 0.000 claims description 7
- 229920000742 Cotton Polymers 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims 2
- 230000035939 shock Effects 0.000 abstract description 11
- 230000008878 coupling Effects 0.000 abstract description 6
- 238000010168 coupling process Methods 0.000 abstract description 6
- 238000005859 coupling reaction Methods 0.000 abstract description 6
- 230000008859 change Effects 0.000 abstract description 5
- 239000010410 layer Substances 0.000 description 22
- 238000010521 absorption reaction Methods 0.000 description 15
- 238000009434 installation Methods 0.000 description 9
- 239000011229 interlayer Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920000297 Rayon Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a special silencer of centrifugal fan, including centrifugal fan body, silencer and whistle box, the interior bottom fixedly connected with mounting panel of whistle box, be equipped with the shock attenuation board on the mounting panel, the centrifugal fan body is installed on the shock attenuation board, the inner wall of whistle box is equipped with the outer wall and is equipped with first sound absorbing layer and second sound absorbing layer respectively, the first flange of air intake fixedly connected with of centrifugal fan body, the one end fixedly connected with rubber connecting pipe of silencer, the other end fixedly connected with second flange of rubber connecting pipe, first flange and second flange are connected through four coupling mechanism. The utility model discloses it is rational in infrastructure, when can carrying out the shock attenuation amortization to the centrifugal fan body, also can protect it, also be convenient for dismantle the muffler, and then be convenient for change or clear up comparatively convenient and fast to the abatvoix in the muffler.
Description
Technical Field
The utility model relates to a silencer technical field especially relates to a special silencer of centrifugal fan.
Background
The prior art discloses a silencer special for a centrifugal fan with application number CN201720842609.2, which comprises a cylindrical silencer shell with an interlayer, wherein glass fiber sound absorption cotton is filled in the interlayer, the inner shell is a perforated plate, a sound absorption core is also arranged in the silencer shell, the sound absorption core is formed by a plurality of sound absorption plates, the cross section of the sound absorption core is in a three-dimensional shape in a shape like Chinese character feng, and the peripheral dimension of the cross section of the sound absorption core is consistent with the inner diameter of the silencer shell; the sound absorption board is characterized in that perforated plates are arranged on two sides of a frame formed by welding square pipes, the perforated plates on the two sides form an interlayer, and glass fiber sound absorption cotton is filled in the interlayer. The centrifugal fan is designed to be of a composite structure with acoustic impedance due to the noise height and the spectral characteristics, the sound absorption sheet is arranged in the centrifugal fan, the broadband noise elimination effect is improved by utilizing different thicknesses and volume weights of the sound absorption cotton, and the problem of noise pollution of the centrifugal fan in the running process is solved.
Foretell silencer links together through flange and centrifugal fan, need change or when clearing up the inside acoustic baffle of silencer, be not convenient for dismantle the silencer, there is certain inconvenience, and be the rigid coupling through flange joint, centrifugal fan work itself can produce certain vibrations, can shake and transmit to the silencer on, thereby make the acoustic baffle shake, there is certain drawback and centrifugal fan work self vibrations also can produce the noise, and above-mentioned patent is just carried out the amortization to air intake and air outlet, the noise cancelling effect is not good, therefore we have designed a special silencer of centrifugal fan and have solved above problem.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the shortcoming that exists among the prior art, and the special silencer of centrifugal fan who proposes, when it can carry out the shock attenuation amortization to the centrifugal fan body, also can protect it, also be convenient for dismantle the silencer, and then be convenient for change or clear up the abatvoix in the silencer, comparatively convenient and fast.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a special silencer of centrifugal fan, includes centrifugal fan body, silencer and whistle box, the interior bottom fixedly connected with mounting panel of whistle box, be equipped with the shock attenuation board on the mounting panel, the centrifugal fan body is installed on the shock attenuation board, the inner wall of whistle box is equipped with the outer wall and is equipped with first sound absorbing layer and second sound absorbing layer respectively, the first flange of air intake fixedly connected with of centrifugal fan body, the one end fixedly connected with rubber connecting pipe of silencer, the other end fixedly connected with second flange of rubber connecting pipe, first flange and second flange are connected through four coupling mechanism.
Preferably, the material of shock attenuation board is the rubber slab, just the shock attenuation board is connected with the mounting panel through a plurality of fixing bolt.
Preferably, first sound absorbing layer and second sound absorbing layer are glass and inhale the sound cotton, just all run through on first sound absorbing layer and the second sound absorbing layer and be equipped with a plurality of through-holes.
Preferably, coupling mechanism is including the mounting hole that runs through first flange setting, fixedly connected with installation piece on the second flange, the installation piece runs through the mounting hole setting, run through on the first flange and be equipped with rather than sliding connection's T type pole, be equipped with the slot on the installation piece, T type pole extends to in the slot, the cover is equipped with the spring on the T type pole, the spring is fixed between the outer wall of T type pole and first flange.
Preferably, the rubber connecting pipe is soft rubber, and the rubber connecting pipe is in a loose state.
Preferably, the air outlet of the centrifugal fan body penetrates through the upper end of the sound insulation box.
Compared with the prior art, the utility model, its beneficial effect does:
the silencer, the sound attenuation box, the first sound absorption layer and the second sound absorption layer can absorb the sound of the centrifugal fan body in work, and the centrifugal fan body in work can be effectively silenced; the vibration reduction plate can reduce the vibration of the centrifugal fan body, so that the sound generated by vibration when the centrifugal fan body works is reduced, namely the noise is reduced, and the centrifugal fan body can be protected; the T-shaped rod is pulled to be separated from the slot, the second flange can be disassembled, the silencer can be maintained conveniently, and the installation and the disassembly are simple and quick; the influence of vibration of the centrifugal fan body during working on the silencer can be reduced through the rubber connecting pipe.
To sum up, the utility model discloses it is rational in infrastructure, when can carrying out the shock attenuation amortization to the centrifugal fan body, also can protect it, also be convenient for dismantle the muffler, and then be convenient for change or clear up the abatvoix in the muffler, comparatively convenient and fast.
Drawings
Fig. 1 is a schematic structural view of a muffler dedicated for a centrifugal fan according to the present invention;
fig. 2 is an enlarged view of a structure a in fig. 1.
In the figure: the damping device comprises a centrifugal fan body 1, a silencer 2, a silencing box 3, a first sound absorption layer 4, a second sound absorption layer 5, a mounting plate 6, a damping plate 7, a fixing bolt 8, a second flange 9, a rubber connecting pipe 10, a first flange 11, a mounting hole 12, a mounting block 13, a slot 14, a T-shaped rod 15 and a spring 16.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring to fig. 1-2, a silencer special for a centrifugal fan comprises a centrifugal fan body 1, a silencer 2 and a silencing box 3, wherein the silencer 2 is in the prior art, and is supported by a corresponding bracket when being installed together with the centrifugal fan body 1; interior bottom fixedly connected with mounting panel 6 of whistle box 3 is equipped with damping plate 7 on the mounting panel 6, and centrifugal fan body 1 is installed on damping plate 7, and damping plate 7's material is the rubber slab, and damping plate 7 is connected with mounting panel 6 through a plurality of fixing bolt 8, can produce vibrations to the centrifugal fan during operation through the rubber slab and carry out the shock attenuation, and then the production of noise abatement.
The inner wall of the sound-deadening box 3 is provided with a first sound-absorbing layer 4 and a second sound-absorbing layer 5 on the outer wall, and the first sound-absorbing layer 4 and the second sound-absorbing layer 5 are both connected with the sound-deadening box 3 through viscose or screws and the like; first sound absorbing layer 4 and second sound absorbing layer 5 are glass and inhale the sound cotton, and all run through on first sound absorbing layer 4 and the second sound absorbing layer 5 and be equipped with a plurality of through-holes, and first sound absorbing layer 4 and second sound absorbing layer 5 can absorb 1 self during operation of centrifugal fan body and produce sound, and then can effectually carry out the amortization to centrifugal fan body 1.
The air inlet of the centrifugal fan body 1 is fixedly connected with a first flange 11, and the air inlet of the centrifugal fan body 1 penetrates through the side wall of the silencing box 3; one end of the silencer 2 is fixedly connected with a rubber connecting pipe 10, the rubber connecting pipe 10 is made of soft rubber, the rubber connecting pipe 10 is in a loose state, namely, the connection is soft, and the influence of vibration of the centrifugal fan body 1 during working on the silencer 2 can be reduced through the rubber connecting pipe 10; the other end fixedly connected with second flange 9 of rubber connecting pipe 10, second flange 9 and rubber connecting pipe 10 all run through whistle box 3 and set up.
The air outlet of the centrifugal fan body 1 penetrates through the upper end of the sound silencing box 3, and the silencer 2 can be installed at the air outlet of the centrifugal fan body 1 in the same mode of the air inlet.
In the utility model, when the centrifugal fan body 1 works, the silencer 2 can be used for silencing the air inlet and the air outlet, thereby greatly reducing the sound generated when the centrifugal fan body 1 works; can carry out the shock attenuation to centrifugal fan body 1 through damper plate 7, so reduce the sound that centrifugal fan body 1 during operation produced because of vibrations, reduce the noise promptly, also can protect centrifugal fan body 1, can absorb the sound of centrifugal fan body 1 during operation through whistle box 3, first sound absorbing layer 4 and second sound absorbing layer 5, effectively carry out the amortization to centrifugal fan body 1 during operation.
When the muffler 2 or the sound absorption plate inside the muffler 2 needs to be replaced, a worker can pull the T-shaped rod 15 outwards to enable the T-shaped rod to be separated from the slot 14, so that the mounting block 13 is not limited any more, and the mounting block 13 can be taken out of the mounting hole 12 in a punching mode, so that the second flange 9 can be detached, the muffler 2 is convenient to maintain, the detachment is simple and rapid, the opposite operation during installation can be achieved, and the installation is simple.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. A special silencer for a centrifugal fan comprises a centrifugal fan body (1), a silencer (2) and a silencing box (3), it is characterized in that the inner bottom of the sound-muffling box (3) is fixedly connected with a mounting plate (6), the mounting plate (6) is provided with a damping plate (7), the centrifugal fan body (1) is arranged on the damping plate (7), the inner wall of the sound-deadening box (3) is provided with a first sound-absorbing layer (4) and a second sound-absorbing layer (5) which are respectively arranged on the outer wall, the air inlet of the centrifugal fan body (1) is fixedly connected with a first flange (11), one end of the muffler (2) is fixedly connected with a rubber connecting pipe (10), the other end of the rubber connecting pipe (10) is fixedly connected with a second flange (9), the first flange (11) and the second flange (9) are connected through four connecting mechanisms.
2. The muffler special for the centrifugal fan as claimed in claim 1, wherein the damping plate (7) is made of rubber, and the damping plate (7) is connected with the mounting plate (6) through a plurality of fixing bolts (8).
3. The silencer special for the centrifugal fan as claimed in claim 1, wherein the first sound absorbing layer (4) and the second sound absorbing layer (5) are both made of glass sound absorbing cotton, and a plurality of through holes are formed in the first sound absorbing layer (4) and the second sound absorbing layer (5) in a penetrating manner.
4. The special muffler for the centrifugal fan according to claim 1, wherein the connecting mechanism comprises a mounting hole (12) formed through a first flange (11), a mounting block (13) is fixedly connected to a second flange (9), the mounting block (13) is formed through the mounting hole (12), a T-shaped rod (15) slidably connected with the first flange (11) is arranged on the first flange (11) in a penetrating manner, a slot (14) is formed in the mounting block (13), the T-shaped rod (15) extends into the slot (14), a spring (16) is sleeved on the T-shaped rod (15), and the spring (16) is fixed between the T-shaped rod (15) and the outer wall of the first flange (11).
5. The silencer special for the centrifugal fan as claimed in claim 1, wherein the rubber connecting pipe (10) is made of soft rubber, and the rubber connecting pipe (10) is in a loose state.
6. The silencer special for the centrifugal fan as claimed in claim 1, wherein the air outlet of the centrifugal fan body (1) penetrates through the upper end of the silencing box (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922364294.7U CN211820104U (en) | 2019-12-25 | 2019-12-25 | Silencer special for centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922364294.7U CN211820104U (en) | 2019-12-25 | 2019-12-25 | Silencer special for centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211820104U true CN211820104U (en) | 2020-10-30 |
Family
ID=73033691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922364294.7U Active CN211820104U (en) | 2019-12-25 | 2019-12-25 | Silencer special for centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211820104U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023020266A1 (en) * | 2021-08-18 | 2023-02-23 | 浙江双阳风机有限公司 | Box-type exhaust fan |
-
2019
- 2019-12-25 CN CN201922364294.7U patent/CN211820104U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023020266A1 (en) * | 2021-08-18 | 2023-02-23 | 浙江双阳风机有限公司 | Box-type exhaust fan |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 222000 41 Xinzhong Road, Haizhou District, Lianyungang City, Jiangsu Province Patentee after: Lianyungang Wanda power station auxiliary equipment Co.,Ltd. Address before: 222000 41 Xinzhong Road, Haizhou District, Lianyungang City, Jiangsu Province Patentee before: LIANYUNGANG WANDA POWER STATION AUXILIARY EQUIPMENT FACTORY |