CN105570200A - Noise reduction silencer for air outlet of dust removal fan - Google Patents
Noise reduction silencer for air outlet of dust removal fan Download PDFInfo
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- CN105570200A CN105570200A CN201410618814.1A CN201410618814A CN105570200A CN 105570200 A CN105570200 A CN 105570200A CN 201410618814 A CN201410618814 A CN 201410618814A CN 105570200 A CN105570200 A CN 105570200A
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- silencer cover
- bend pipe
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Abstract
A noise reduction silencer for an air outlet of a dust removal fan comprises a dust removal fan body (1) and is characterized in that the air outlet (2) of the fan is connected with the inlet end of an air duct bend (3), the outlet end of the air duct bend (3) is vertically downward, and the outlet end of the air duct bend (3) communicates with the top of a silencing hood (4); a flow resisting structure is mounted inside the silencing hood (4) and right faces the outlet end of the air duct bend (3); an air flow guiding plate (10) or an air flow guiding cambered surface is arranged on the outer side of an air guiding structure, silencing cotton (5) is laid on the peripheral inner wall of the silencing hood (4), and an exhaust outlet (8) is formed in the bottom of the silencing hood (4). The noise reduction silencer is compact in structure, can reduce the speed of air flow exhausted by the dust removal fan to the largest extent, generate good noise reduction and silencing effects and fundamentally and greatly lower noise of the air outlet of the existing dust removal fan of a cotton mill, and is widely applied in the field of noise reduction and silencing of plants.
Description
Technical field
The present invention relates to a kind of noise-reduction device, particularly relate to a kind of dedusting fan exhaust outlet noise-reduction device, belong to factory building noise reduction technology field.
Background technique
Past cotton mill dedusting fan air port is directly installed on outside wall, the air-flow that dedusting fan air port is got rid of is directly to outer discharge, noise very, traditional noise reduction dedusting method is simple, noise reduction is not good, and one is on air channel, do sound insulation process, to change its course process possibly according to actual conditions to pipeline, difficulty of construction is large, does not fundamentally reduce noise; Another kind increases gobo at exterior wall, although reduce the noise in factory building, the noise outside factory building is still very large, does not reduce noise from sound source, is not easy to use on a large scale.
Summary of the invention
The object of the invention is for existing dedusting fan exhaust outlet noise excessive, the defect that tradition noise reduction is not good and deficiency, now provide a kind of rational in infrastructure, by reducing airspeed and noise reduction, achieve the significantly reduction of dedusting fan exhaust outlet noise, use a kind of dedusting fan exhaust outlet noise-reduction device very easily.
For achieving the above object, technical solution of the present invention is: a kind of dedusting fan exhaust outlet noise-reduction device, comprise dedusting fan body, the outside of dedusting fan body is fan outlet, it is characterized in that: described fan outlet is connected with the entry end of air channel bend pipe, the outlet end of air channel bend pipe vertically downward, the outlet end of air channel bend pipe is connected with the top of silencer cover, the outlet end that the inside of silencer cover faces air channel bend pipe is provided with reducing-flow structure, the arranged outside of wind guiding structure has air-flow guide plate or air-flow lead-in curve, the surrounding inwall of silencer cover is equipped with silencing cotton, the bottom of silencer cover is provided with exhaust port.
Described reducing-flow structure is arc spoiler, and the arc surface symmetry that arc spoiler is bent upwards by two panels fixedly forms, and two panels arc spoiler is welded as chevron shaped structure, and the connecting edge of arc spoiler upper end is positioned horizontally in the middle of air channel winding pipe exit end.
Described reducing-flow structure is tubaeform choked flow tube, tubaeform choked flow tube is the conical structure with circular arc camber, flaring top is closed taper shape, flaring top is positioned at the middle of air channel winding pipe exit end, and the vertical axis of tubaeform choked flow tube and the central axis of silencer cover coincide.
The arranged outside of described arc spoiler and tubaeform choked flow tube has the air-flow guide plate guiding air-flow to discharge from exhaust port, and air-flow guide plate with arc surface, and is fixed on the madial wall of silencer cover.
In described silencer cover, more than one impedance composite muffler is installed, impedance composite muffler.
The inside of described air channel bend pipe and silencer cover is provided with support frame.
The invention has the beneficial effects as follows:
1. the present invention is provided with silencer cover immediately below the bend pipe of air channel, the inside of silencer cover is provided with reducing-flow structure, make to produce numerous air-flow vortex by the high velocity air of silencer cover, significantly reduce the Negotiation speed of air-flow, the noise farthest brought compared with little airflow, is also provided with silencing cotton and impedance composite muffler in silencer cover simultaneously.
2. compact structure of the present invention, farthest can reduce the speed of dedusting fan institute exhaust stream, and produce good noise-reduction effect, fundamentally will can greatly reduce the noise in dedusting fan air port, existing cotton mill, have in factory building noise-reduction field and use widely.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention 1.
Fig. 2 is the structural representation of arc spoiler of the present invention.
Fig. 3 is the structural representation of the embodiment of the present invention 2.
Fig. 4 is the structural representation of the tubaeform choked flow tube of the present invention.
Fig. 5 is the structural representation of air channel of the present invention bend pipe.
Fig. 6 is the horizontal cross of silencer cover of the present invention.
Fig. 7 is the structural representation of support frame of the present invention.
In figure: dedusting fan body 1, fan outlet 2, air channel bend pipe 3, silencer cover 4, silencing cotton 5, arc spoiler 6, tubaeform choked flow tube 7, exhaust port 8, interface reinforcing frame 9, support frame 10.
Embodiment
Illustrate that the present invention is described in further detail with embodiment below in conjunction with accompanying drawing.
See Fig. 1 to Fig. 7, a kind of dedusting fan exhaust outlet noise-reduction device of the present invention, comprise dedusting fan body 1, the outside of dedusting fan body 1 is fan outlet 2, it is characterized in that: described fan outlet 2 is connected with the entry end of air channel bend pipe 3, the outlet end of air channel bend pipe 3 vertically downward, the outlet end of air channel bend pipe 3 is connected with the top of silencer cover 4, the outlet end that the inside of silencer cover 4 faces air channel bend pipe 3 is provided with reducing-flow structure, the arranged outside of wind guiding structure has air-flow guide plate or air-flow lead-in curve, the surrounding inwall of silencer cover 4 is equipped with silencing cotton 5, the bottom of silencer cover 4 is provided with exhaust port 8.
Described reducing-flow structure is arc spoiler 6, the arc surface symmetry that arc spoiler 6 is bent upwards by two panels fixedly forms, two panels arc spoiler 6 is welded as chevron shaped structure, and the connecting edge of arc spoiler 6 upper end is positioned horizontally in the middle of air channel bend pipe 3 outlet end.
Described reducing-flow structure is tubaeform choked flow tube 7, tubaeform choked flow tube 7 is for having the conical structure of circular arc camber, flaring top is closed taper shape, flaring top is positioned at the middle of air channel bend pipe 3 outlet end, and the central axis of the vertical axis of tubaeform choked flow tube 7 and silencer cover 4 coincides.
The arranged outside of described arc spoiler 6 and tubaeform choked flow tube 7 has the air-flow guide plate 10 guiding air-flow to discharge from exhaust port 8, and air-flow guide plate 10 with arc surface, and is fixed on the madial wall of silencer cover 4.
More than one impedance composite muffler is installed, impedance composite muffler in described silencer cover 4.
The inside of described air channel bend pipe 3 and silencer cover 4 is provided with support frame 10.
See Fig. 1, the outside of dedusting fan body 1 is fan outlet 2, and different from the mode that traditional dedusting fan is directly vented, the present invention is provided with noise-reduction device on fan outlet 2.Fan outlet 2 is connected with the entry end of air channel bend pipe 3, and vertically downward, air channel bend pipe 3 changes air draft direction to the outlet end of air channel bend pipe 3, the air-flow that level is discharged is changed into air-flow vertically downward, can reduce the speed of air-flow to a certain extent.Be provided with silencer cover 4 immediately below air channel bend pipe 3, the inside of air channel bend pipe 3 and silencer cover 4 is provided with support frame 10, and support frame 10 improves the bulk strength of air channel bend pipe 3 and silencer cover 4, is convenient to integrated.The outlet end of air channel bend pipe 3 is connected with the top of silencer cover 4, and the bottom of silencer cover 4 is provided with exhaust port 8, and the air-flow through noise-reduction is discharged downwards from exhaust port 8.
The outlet end that the inside of silencer cover 4 faces air channel bend pipe 3 is provided with reducing-flow structure, reducing-flow structure can be various structures form, its object is exactly that the high velocity air making to pass through produces numerous air-flow vortex, significantly reduces the Negotiation speed of air-flow, farthest compared with the noise that little airflow brings.A kind of embodiment of reducing-flow structure is: reducing-flow structure is arc spoiler 6, and the arc surface symmetry that arc spoiler 6 is bent upwards by two panels fixedly forms, and two panels arc spoiler 6 is welded as chevron shaped structure.The connecting edge of arc spoiler 6 upper end is positioned horizontally in the middle of air channel bend pipe 3 outlet end, the air-flow of discharging from air channel bend pipe 3 has been split two strands of air-flows under the effect of arc spoiler 6, two strands of air-flows create many air flow swirl under the arc surface effect of arc spoiler 6, the outside of arc spoiler 6 is also provided with air-flow guide plate or air-flow lead-in curve, the air flow swirl of two bursts of air-flow generations there will be owing to rotating oppositely different phenomenon of colliding and blend, define the less air flow swirl of One's name is legion, greatly reduce airspeed.
The another kind of embodiment of reducing-flow structure is: reducing-flow structure is tubaeform choked flow tube 7, and tubaeform choked flow tube 7 is for having the conical structure of circular arc camber, and flaring top is closed taper shape, and flaring top is positioned at the middle of air channel bend pipe 3 outlet end.The vertical axis of tubaeform choked flow tube 7 and the central axis of silencer cover 4 coincide, and the outside of tubaeform choked flow tube 7 is also provided with air-flow guide plate or air-flow lead-in curve.The air-flow of discharging from air channel bend pipe 3 has been split multiply air-flow under the effect of tubaeform choked flow tube 7, multiply air-flow creates many air flow swirl under the circular cone cambered surface effect of tubaeform choked flow tube 7, then under being subject to the effect of air-flow guide plate or air-flow lead-in curve, air flow swirl there will be owing to rotating oppositely different phenomenon of colliding and blend, define the less air flow swirl of One's name is legion, greatly reduce airspeed.
The surrounding inwall of silencer cover 4 is equipped with silencing cotton 5, farthest absorbs noise by silencing cotton 5, and the impact that buffer gas flow produces.The outside of silencing cotton 5 is provided with the dunnage with numerous hole, to improve the fixing soundness of silencing cotton 5.In order to improve noise-reduction effect further, be provided with more than one impedance composite muffler in silencer cover 4, when being provided with multiple impedance composite muffler in silencer cover 4, impedance composite muffler is evenly arranged in silencer cover 4.Compact structure of the present invention, farthest can reduce the speed of dedusting fan institute exhaust stream, and produce good noise-reduction effect, the noise in dedusting fan air port, existing cotton mill can be reduced by 15 decibels-25 decibels, have in factory building noise-reduction field and use widely.
Claims (6)
1. a dedusting fan exhaust outlet noise-reduction device, comprise dedusting fan body (1), the outside of dedusting fan body (1) is fan outlet (2), it is characterized in that: described fan outlet (2) is connected with the entry end of air channel bend pipe (3), the outlet end of air channel bend pipe (3) vertically downward, the outlet end of air channel bend pipe (3) is connected with the top of silencer cover (4), the outlet end that the inside of silencer cover (4) faces air channel bend pipe (3) is provided with reducing-flow structure, the arranged outside of wind guiding structure has air-flow guide plate or air-flow lead-in curve, the surrounding inwall of silencer cover (4) is equipped with silencing cotton (5), the bottom of silencer cover (4) is provided with exhaust port (8).
2. a kind of dedusting fan exhaust outlet noise-reduction device according to claim 1, it is characterized in that: described reducing-flow structure is arc spoiler (6), the arc surface symmetry that arc spoiler (6) is bent upwards by two panels fixedly forms, two panels arc spoiler (6) is welded as chevron shaped structure, and the connecting edge of arc spoiler (6) upper end is positioned horizontally in the middle of air channel bend pipe (3) outlet end.
3. a kind of dedusting fan exhaust outlet noise-reduction device according to claim 1, it is characterized in that: described reducing-flow structure is tubaeform choked flow tube (7), tubaeform choked flow tube (7) is for having the conical structure of circular arc camber, flaring top is closed taper shape, flaring top is positioned at the middle of air channel bend pipe (3) outlet end, and the central axis of the vertical axis of tubaeform choked flow tube (7) and silencer cover (4) coincides.
4. a kind of dedusting fan exhaust outlet noise-reduction device according to Claims 2 or 3, it is characterized in that: the arranged outside of described arc spoiler (6) and tubaeform choked flow tube (7) has the air-flow guide plate guiding air-flow to discharge from exhaust port (8), air-flow guide plate with arc surface, and is fixed on the madial wall of silencer cover (4).
5. a kind of dedusting fan exhaust outlet noise-reduction device according to claim 1, is characterized in that: described silencer cover is provided with more than one impedance composite muffler, impedance composite muffler in (4).
6. a kind of dedusting fan exhaust outlet noise-reduction device according to claim 1, is characterized in that: the inside of described air channel bend pipe (3) and silencer cover (4) is provided with support frame (10).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410618814.1A CN105570200B (en) | 2014-11-06 | 2014-11-06 | A kind of dedusting fan air outlet noise-reduction device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410618814.1A CN105570200B (en) | 2014-11-06 | 2014-11-06 | A kind of dedusting fan air outlet noise-reduction device |
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| CN105570200A true CN105570200A (en) | 2016-05-11 |
| CN105570200B CN105570200B (en) | 2019-07-26 |
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| CN201410618814.1A Active CN105570200B (en) | 2014-11-06 | 2014-11-06 | A kind of dedusting fan air outlet noise-reduction device |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106242857A (en) * | 2016-08-31 | 2016-12-21 | 天津市施易得肥料有限公司 | A kind of fertilizer coating fluid bed |
| CN107101353A (en) * | 2017-05-27 | 2017-08-29 | 远大洁净空气科技有限公司 | A kind of new blower fan of low noise |
| CN107166424A (en) * | 2017-07-27 | 2017-09-15 | 江苏丰鑫源环保集团有限公司 | A kind of biomass boiler denoising device |
| CN107551717A (en) * | 2017-09-22 | 2018-01-09 | 天津市弘亚润滑粉制造有限公司 | A kind of dust arrester with decrease of noise functions |
| CN108180704A (en) * | 2016-12-08 | 2018-06-19 | 河南洁宝节能科技有限公司 | Vermicelli drying machine drying lane device |
| CN108675373A (en) * | 2018-03-21 | 2018-10-19 | 国电科学技术研究院有限公司 | A kind of the thermal wastewater concentration systems and method of heat smoke transformation discharge water cycle |
| CN110762252A (en) * | 2019-11-04 | 2020-02-07 | 温州海瑞陶瓷阀有限公司 | Combined noise reduction valve core for kitchen sink drawing faucet |
| CN111649003A (en) * | 2020-06-09 | 2020-09-11 | 长沙佳能通用泵业有限公司 | Self-balancing multi-stage pump composite pipe |
| CN111981594A (en) * | 2020-08-20 | 2020-11-24 | 广州九森环保产业有限责任公司 | Air purifier |
| CN113793587A (en) * | 2021-11-16 | 2021-12-14 | 中国空气动力研究与发展中心计算空气动力研究所 | Noise reduction method based on vortex array |
| CN114458625A (en) * | 2022-03-03 | 2022-05-10 | 深圳乐居智能电子有限公司 | Air inlet cover, fan assembly, air duct structure and floor sweeping robot |
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| CN201228644Y (en) * | 2008-06-05 | 2009-04-29 | 赵和富 | Exhaustion, heat radiation and silencing device for deep well ore |
| CN201354665Y (en) * | 2009-02-27 | 2009-12-02 | 上海朗诗建筑科技有限公司 | Throttled wind system silencer |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106242857A (en) * | 2016-08-31 | 2016-12-21 | 天津市施易得肥料有限公司 | A kind of fertilizer coating fluid bed |
| CN108180704A (en) * | 2016-12-08 | 2018-06-19 | 河南洁宝节能科技有限公司 | Vermicelli drying machine drying lane device |
| CN107101353A (en) * | 2017-05-27 | 2017-08-29 | 远大洁净空气科技有限公司 | A kind of new blower fan of low noise |
| CN107166424A (en) * | 2017-07-27 | 2017-09-15 | 江苏丰鑫源环保集团有限公司 | A kind of biomass boiler denoising device |
| CN107551717A (en) * | 2017-09-22 | 2018-01-09 | 天津市弘亚润滑粉制造有限公司 | A kind of dust arrester with decrease of noise functions |
| CN108675373A (en) * | 2018-03-21 | 2018-10-19 | 国电科学技术研究院有限公司 | A kind of the thermal wastewater concentration systems and method of heat smoke transformation discharge water cycle |
| CN110762252A (en) * | 2019-11-04 | 2020-02-07 | 温州海瑞陶瓷阀有限公司 | Combined noise reduction valve core for kitchen sink drawing faucet |
| CN111649003A (en) * | 2020-06-09 | 2020-09-11 | 长沙佳能通用泵业有限公司 | Self-balancing multi-stage pump composite pipe |
| CN111981594A (en) * | 2020-08-20 | 2020-11-24 | 广州九森环保产业有限责任公司 | Air purifier |
| CN113793587A (en) * | 2021-11-16 | 2021-12-14 | 中国空气动力研究与发展中心计算空气动力研究所 | Noise reduction method based on vortex array |
| CN114458625A (en) * | 2022-03-03 | 2022-05-10 | 深圳乐居智能电子有限公司 | Air inlet cover, fan assembly, air duct structure and floor sweeping robot |
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| CN105570200B (en) | 2019-07-26 |
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