CN105570200B - A kind of dedusting fan air outlet noise-reduction device - Google Patents
A kind of dedusting fan air outlet noise-reduction device Download PDFInfo
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- CN105570200B CN105570200B CN201410618814.1A CN201410618814A CN105570200B CN 105570200 B CN105570200 B CN 105570200B CN 201410618814 A CN201410618814 A CN 201410618814A CN 105570200 B CN105570200 B CN 105570200B
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Abstract
A kind of dedusting fan air outlet noise-reduction device, including dedusting fan ontology (1), it is characterized by: the fan outlet (2) is connected with the arrival end of air duct bend pipe (3), the outlet end of air duct bend pipe (3) is vertically downward, it is connected at the top of the outlet end of air duct bend pipe (3) and silencer cover (4), the outlet end that the inside of silencer cover (4) faces air duct bend pipe (3) is equipped with reducing-flow structure, air-flow directing plate (10) or air-flow lead-in curve are provided on the outside of air guide structure, silencing cotton (5) are equipped on the surrounding inner wall of silencer cover (4), the bottom of silencer cover (4) is provided with exhaust outlet (8), structure of the invention is compact, the speed of dedusting fan institute exhaust stream can be reduced to the greatest extent, and generate preferable noise-reduction effect, it will can fundamentally greatly reduce existing The noise in cotton mill dedusting fan air port has extensive use in workshop noise-reduction field.
Description
Technical field
The present invention relates to a kind of noise-reduction device more particularly to a kind of dedusting fan air outlet noise-reduction devices, belong to
In workshop noise reduction technology field.
Background technique
Past cotton mill dedusting fan air port is directly installed on outside wall, and the air-flow that dedusting fan air port excludes directs out row
It puts, very, traditional noise reduction dedusting method is simple, and noise reduction effect is bad for noise, and one is sound insulation processing, root are done on air duct
Processing of changing its course may be carried out to pipeline according to actual conditions, difficulty of construction is big, does not reduce noise fundamentally；Another kind be
Exterior wall increases gobo, although reducing the noise in workshop, the noise outside workshop is still very big, does not drop from sound source
Low noise is not easy to use on a large scale.
Summary of the invention
The purpose of the present invention is excessive, the bad defects of traditional noise reduction effect for existing dedusting fan air outlet noise
And deficiency, it now provides a kind of structurally reasonable, by reducing air velocity and noise reduction, realizes the big of dedusting fan air outlet noise
Amplitude reduction, a kind of dedusting fan air outlet noise-reduction device very convenient to use.
To achieve the above object, the technical solution of the invention is as follows: a kind of dedusting fan air outlet noise-reduction device,
Including dedusting fan ontology, the outside of dedusting fan ontology is fan outlet, it is characterised in that: the fan outlet and wind
The arrival end of road bend pipe is connected, the outlet end of air duct bend pipe vertically downward, the outlet end of air duct bend pipe and the top of silencer cover
It is connected, the outlet end that the inside of silencer cover faces air duct bend pipe is equipped with reducing-flow structure, is provided on the outside of air guide structure
Air-flow directing plate or air-flow lead-in curve are equipped with silencing cotton on the surrounding inner wall of silencer cover, and the bottom of silencer cover is provided with row
Air port, reducing-flow structure are arc spoiler, and symmetrically fixation forms the arc surface that arc spoiler is bent upwards by two panels, two panels arc
Form drag flowing plate is welded as chevron shaped structure, and the connecting edge of arc spoiler upper end is positioned horizontally in the center at air duct winding pipe exit end
Between or reducing-flow structure be tubaeform choked flow tube, tubaeform choked flow tube be the conical structure with circular arc camber, it is tubaeform
Top is closed cone, and tubaeform top is located at the middle at air duct winding pipe exit end, and tubaeform choked flow tube
The central axis of vertical axis and silencer cover coincides, and is provided with guidance air-flow on the outside of arc spoiler and tubaeform choked flow tube
The air-flow directing plate being discharged from exhaust outlet, air-flow directing plate has arc surface, and is fixed on the inner sidewall of silencer cover.
More than one impedance composite muffler, impedance composite muffler are installed in the silencer cover.
The air duct bend pipe and silencer cover are internally provided with support frame.
The beneficial effects of the present invention are:
1. the present invention is provided with silencer cover immediately below the bend pipe of air duct, the inside of silencer cover is equipped with reducing-flow structure, makes
Generate numerous air-flow vortexes by the high-speed flow of silencer cover, significantly reduce air-flow by speed, it is smaller to the greatest extent
Air-flow bring noise, while silencing cotton and impedance composite muffler are additionally provided in silencer cover.
2. structure of the invention is compact, the speed of dedusting fan institute exhaust stream can be reduced to the greatest extent, and generated preferable
Noise-reduction effect, the noise in existing cotton mill dedusting fan air port will can be fundamentally greatly reduced, in workshop noise reduction
Noise reduction field has extensive use.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention 1.
Fig. 2 is the structural schematic diagram of arc spoiler of the present invention.
Fig. 3 is the structural schematic diagram of the embodiment of the present invention 2.
Fig. 4 is the structural schematic diagram of the tubaeform choked flow tube of the present invention.
Fig. 5 is the structural schematic diagram of air duct bend pipe of the present invention.
Fig. 6 is the horizontal cross of silencer cover of the present invention.
Fig. 7 is the structural schematic diagram of support frame of the present invention.
In figure: dedusting fan ontology 1, fan outlet 2, air duct bend pipe 3, silencer cover 4, silencing cotton 5, arc spoiler 6,
Tubaeform choked flow tube 7, exhaust outlet 8, interface reinforcing frame 9, support frame 10.
Specific embodiment
Below in conjunction with Detailed description of the invention and specific embodiment, the present invention is described in further detail.
Referring to Fig. 1 to Fig. 7, a kind of dedusting fan air outlet noise-reduction device of the invention, including dedusting fan ontology
1, the outside of dedusting fan ontology 1 is fan outlet 2, it is characterised in that: the fan outlet 2 enters with air duct bend pipe 3
Mouth end is connected, and vertically downward, the outlet end of air duct bend pipe 3 is connected with the top of silencer cover 4 for the outlet end of air duct bend pipe 3,
The outlet end that the inside of silencer cover 4 faces air duct bend pipe 3 is equipped with reducing-flow structure, is provided with air-flow on the outside of air guide structure and draws
Guide plate or air-flow lead-in curve are equipped with silencing cotton 5 on the surrounding inner wall of silencer cover 4, and the bottom of silencer cover 4 is provided with exhaust outlet
8, reducing-flow structure is arc spoiler 6, and symmetrically fixation forms the arc surface that arc spoiler 6 is bent upwards by two panels, two panels arc
Form drag flowing plate 6 is welded as chevron shaped structure, and the connecting edge of 6 upper end of arc spoiler is being positioned horizontally in 3 outlet end of air duct bend pipe just
Centre or reducing-flow structure are tubaeform choked flow tube 7, and tubaeform choked flow tube 7 is the conical structure with circular arc camber, loudspeaker
The top of shape is closed cone, and tubaeform top is located at the middle of 3 outlet end of air duct bend pipe, and tubaeform choked flow
The central axis of the vertical axis and silencer cover 4 of cylinder 7 coincides, and the outside of arc spoiler 6 and tubaeform choked flow tube 7 is provided with
The air-flow directing plate 10 that guidance air-flow is discharged from exhaust outlet 8, air-flow directing plate 10 has arc surface, and is fixed on silencer cover 4
On inner sidewall.
More than one impedance composite muffler, impedance composite muffler are installed in the silencer cover 4.
The air duct bend pipe 3 and silencer cover 4 are internally provided with support frame 10.
Referring to Fig. 1, the outside of dedusting fan ontology 1 is fan outlet 2, the side being directly vented with traditional dedusting fan
Formula is different, and the present invention is equipped with noise-reduction device on fan outlet 2.The arrival end of fan outlet 2 and air duct bend pipe 3
It is connected, vertically downward, air duct bend pipe 3 changes air draft direction for the outlet end of air duct bend pipe 3, and the air-flow of level discharge is changed
For air-flow vertically downward, the speed of air-flow can be reduced to a certain extent.The underface of air duct bend pipe 3 is provided with silencer cover
4, air duct bend pipe 3 and silencer cover 4 are internally provided with support frame 10, and support frame 10 improves air duct bend pipe 3 and silencer cover 4
Integral strength, convenient for integrated.The outlet end of air duct bend pipe 3 is connected with the top of silencer cover 4, the bottom setting of silencer cover 4
There is exhaust outlet 8, is discharged downwards by the air-flow of noise-reduction from exhaust outlet 8.
The outlet end that the inside of silencer cover 4 faces air duct bend pipe 3 is equipped with reducing-flow structure, and reducing-flow structure can be a variety of
Structure type, purpose be exactly make by high-speed flow generate numerous air-flow vortexes, significantly reduce air-flow by speed,
To the greatest extent compared with little airflow bring noise.A kind of embodiment of reducing-flow structure are as follows: reducing-flow structure is arc spoiler 6, arc
Symmetrically fixation forms the arc surface that form drag flowing plate 6 is bent upwards by two panels, and two panels arc spoiler 6 is welded as chevron shaped structure.
The connecting edge of 6 upper end of arc spoiler is positioned horizontally in the middle of 3 outlet end of air duct bend pipe, the air-flow being discharged from air duct bend pipe 3
Two strands of air-flows are split under the action of arc spoiler 6, two strands of air-flows produce under the arc surface effect of arc spoiler 6
Many air flow swirls are given birth to, the outside of arc spoiler 6 is additionally provided with air-flow directing plate or air-flow lead-in curve, and two strands of air-flows produce
Raw air flow swirl will appear collision and blending phenomenon due to rotating reversed different, form large number of smaller air-flow
Whirlpool greatly reduces air velocity.
Another embodiment of reducing-flow structure are as follows: reducing-flow structure be tubaeform choked flow tube 7, tubaeform choked flow tube 7 be with
The conical structure of circular arc camber, tubaeform top are closed cone, and tubaeform top is located at the outlet of air duct bend pipe 3
The middle at end.The central axis of the vertical axis and silencer cover 4 of tubaeform choked flow tube 7 coincides, outside tubaeform choked flow tube 7
Side is additionally provided with air-flow directing plate or air-flow lead-in curve.Effect of the air-flow being discharged from air duct bend pipe 3 in tubaeform choked flow tube 7
Under be split multiply air-flow, multiply air-flow produces many air-flow whirlpools under the circular cone cambered surface effect of tubaeform choked flow tube 7
Whirlpool is then subjected under the action of air-flow directing plate or air-flow lead-in curve, and air flow swirl will appear due to rotating reversed different
Collision and blending phenomenon, form large number of smaller air flow swirl, greatly reduce air velocity.
It is equipped with silencing cotton 5 on the surrounding inner wall of silencer cover 4, noise is absorbed to the greatest extent by silencing cotton 5, and delay
The raw impact of qi of chong channel ascending adversely miscarriage.The outside of silencing cotton 5 is equipped with the support plate with numerous holes, to improve the fixation of silencing cotton 5
Fastness.In order to further increase noise-reduction effect, more than one impedance composite muffler is installed in silencer cover 4,
When being equipped with multiple impedance composite mufflers in silencer cover 4, impedance composite muffler is evenly arranged in silencer cover 4.This
Inventive structure is compact, can reduce the speed of dedusting fan institute exhaust stream to the greatest extent, and generates preferable noise-reduction effect
Fruit can have 15 decibels -25 decibels of lower noise of existing cotton mill dedusting fan air port wide in workshop noise-reduction field
General utilization.
Claims (3)
1. a kind of dedusting fan air outlet noise-reduction device, including dedusting fan ontology (1), dedusting fan ontology (1) it is outer
Side is fan outlet (2), it is characterised in that: the fan outlet (2) is connected with the arrival end of air duct bend pipe (3), wind
The outlet end of road bend pipe (3) vertically downward, is connected at the top of the outlet end and silencer cover (4) of air duct bend pipe (3), silencer cover
(4) outlet end that inside faces air duct bend pipe (3) is equipped with reducing-flow structure, and air-flow guidance is provided on the outside of air guide structure
Plate or air-flow lead-in curve are equipped with silencing cotton (5) on the surrounding inner wall of silencer cover (4), and the bottom of silencer cover (4) is provided with row
Air port (8), reducing-flow structure are arc spoiler (6), the arc surface that arc spoiler (6) is bent upwards by two panels it is symmetrically fixed and
At two panels arc spoiler (6) is welded as chevron shaped structure, and it is curved that the connecting edge of arc spoiler (6) upper end is positioned horizontally in air duct
The middle or reducing-flow structure for managing (3) outlet end are tubaeform choked flow tube (7), and tubaeform choked flow tube (7) is with circular arc song
The conical structure in face, tubaeform top are closed cone, and tubaeform top is located at air duct bend pipe (3) outlet end
Middle, and the vertical axis of tubaeform choked flow tube (7) and the central axis of silencer cover (4) coincide, arc spoiler (6)
With the air-flow directing plate that is discharged from exhaust outlet (8) of guidance air-flow, air-flow directing plate band are provided on the outside of tubaeform choked flow tube (7)
There is arc surface, and is fixed on the inner sidewall of silencer cover (4).
2. a kind of dedusting fan air outlet noise-reduction device according to claim 1, it is characterised in that: the silencer cover
(4) more than one impedance composite muffler is installed in.
3. a kind of dedusting fan air outlet noise-reduction device according to claim 1, it is characterised in that: the air duct is curved
Pipe (3) and silencer cover (4) are internally provided with support frame (10).
Priority Applications (1)
| 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 |
Applications Claiming Priority (1)
| 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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| Publication Number | Publication Date |
|---|---|
| CN105570200A CN105570200A (en) | 2016-05-11 |
| CN105570200B true CN105570200B (en) | 2019-07-26 |
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| Application Number | Title | Priority Date | Filing Date |
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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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| 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 |
| CN113793587B (en) * | 2021-11-16 | 2022-02-11 | 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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| Publication number | Publication date |
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| CN105570200A (en) | 2016-05-11 |
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