CN103850987B - A kind of muffler for fan for deduster - Google Patents

A kind of muffler for fan for deduster Download PDF

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Publication number
CN103850987B
CN103850987B CN201410055767.4A CN201410055767A CN103850987B CN 103850987 B CN103850987 B CN 103850987B CN 201410055767 A CN201410055767 A CN 201410055767A CN 103850987 B CN103850987 B CN 103850987B
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CN
China
Prior art keywords
fan
acoustical panel
inner casing
baffler
muffler
Prior art date
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Expired - Fee Related
Application number
CN201410055767.4A
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Chinese (zh)
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CN103850987A (en
Inventor
沈良忠
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JIANGSU CHANGJING ENVIRONMENTAL PROTECTION TECHNOLOGY Co Ltd
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JIANGSU CHANGJING ENVIRONMENTAL PROTECTION TECHNOLOGY Co Ltd
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Priority to CN201410055767.4A priority Critical patent/CN103850987B/en
Publication of CN103850987A publication Critical patent/CN103850987A/en
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Publication of CN103850987B publication Critical patent/CN103850987B/en
Expired - Fee Related legal-status Critical Current
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Abstract

The invention discloses a kind of muffler for fan for deduster, belong to noise-proofing apparatus field.A kind of muffler for fan for deduster of the present invention, comprise shell, inner casing, be located at silencing cotton between shell and inner casing, also comprise acoustical panel, porous sound absorbing pipe and filter screen, the two ends of described inner casing are respectively exhaust outlet and intake grill, two or more than two acoustical panel is set gradually in described inner casing, and acoustical panel is perpendicular to air intake direction, described porous sound absorbing pipe passes perpendicularly through acoustical panel, this porous sound absorbing pipe is provided with many, and be evenly arranged, described filter screen is arranged in intake grill.The present invention not only utilizes multilayer acoustical panel successive elimination air power noise, and can effectively prevent silencing cotton attract dust, improves the working life of baffler, and structure is simple simultaneously, and good muffling effect is cheap for manufacturing cost.

Description

A kind of muffler for fan for deduster
Technical field
The present invention relates to a kind of baffler, more particularly, relate to a kind of muffler for fan for deduster.
Background technique
Baffler (Muffler) is a kind of device stoping sound transmission and allow air-flow to pass through, and is the important measures eliminating air power noise.The device of the reduction noise on the air-flow path that baffler is mounted in air powered equipment (equipment as larger in relief opening noises such as blower, air compressor, boiler exhaust mouth, generator, water pumps) or in inlet and exhaust system.Its principle is: baffler is provided with porous sound absorbing material, and when sound wave enters baffler, a part of acoustic energy rubs and is converted into thermal energy consumption in the hole of porous material, finally plays the effect weakening sound wave.Fan operation speed in dusting apparatus system is high, the noise produced is larger, easily cause noise pollution, need, between blower fan and air draft chimney, baffler is installed, the erasure effect of existing muffler for fan is poor, and easily with tiny dust in the air of dusting apparatus system, these dusts are easily adsorbed by the silencing cotton in baffler, cause erasure effect to decline; Further, existing muffler for fan is directly connected with blower fan, and blower fan operationally can vibrate, and can cause the fatigue of joint material in the course of time, even can damage baffler, and these all can cause reduce the working life of baffler.In addition, baffler, when stoping the propagation of sound, also will allow passing through of air-flow, the baffler that existing sound-damping qualities is very large on the market, but the pressure loss of this kind of baffler is large, and price is very high, is difficult to the user demand meeting people.
Summary of the invention
1. invent the technical problem that will solve
The erasure effect that the object of the invention is to overcome existing fan of dust remover baffler is poor, working life is short and easily reduce the deficiency of erasure effect because of attract dust, a kind of muffler for fan for deduster is provided, adopt technological scheme of the present invention, not only utilize multilayer acoustical panel successive elimination air power noise, and can effectively prevent silencing cotton attract dust, improve the working life of baffler, structure is simple simultaneously, good muffling effect, cheap for manufacturing cost.
2. technological scheme
For achieving the above object, technological scheme provided by the invention is:
A kind of muffler for fan for deduster of the present invention, comprise shell, inner casing, be located at silencing cotton between shell and inner casing, also comprise acoustical panel, porous sound absorbing pipe and filter screen, the two ends of described inner casing are respectively exhaust outlet and intake grill, two or more than two acoustical panel is set gradually in described inner casing, and acoustical panel is perpendicular to air intake direction, described porous sound absorbing pipe passes perpendicularly through acoustical panel, this porous sound absorbing pipe is provided with many, and be evenly arranged, described filter screen is arranged in intake grill.
Further, also comprise fan connecting tube, described fan connecting tube is taper, and the large one end of opening is provided with baffler adpting flange, one end that opening is little is provided with blower fan adpting flange, and the end of described intake grill is provided with intake grill flange, and described intake grill flange is connected with above-mentioned baffler adpting flange, and being provided with seal ring between intake grill flange and baffler adpting flange, described blower fan adpting flange and the exhaust outlet of blower fan are tightly connected.
Further, described acoustical panel is made up of two blocks of web plates and the silencing cotton be filled between two blocks of web plates.
Further, described exhaust outlet is connected with air draft chimney by anchor ear.
3. beneficial effect
Adopt technological scheme provided by the invention, compared with existing known technology, there is following beneficial effect:
(1) a kind of muffler for fan for deduster of the present invention, the two ends of its inner casing are respectively exhaust outlet and intake grill, two or more than two acoustical panel is set gradually in inner casing, and acoustical panel is perpendicular to air intake direction, porous sound absorbing pipe passes perpendicularly through acoustical panel, this porous sound absorbing pipe is provided with many, and be evenly arranged, filter screen is arranged in intake grill, utilize multilayer acoustical panel successive elimination air power noise, the air-flow simultaneously realizing baffler in conjunction with porous sound absorbing pipe passes through, structure is simple, good muffling effect, cheap for manufacturing cost, and can effectively prevent silencing cotton attract dust, improve the working life of baffler,
(2) a kind of muffler for fan for deduster of the present invention, its fan connecting tube is taper, and the large one end of opening is provided with baffler adpting flange, one end that opening is little is provided with blower fan adpting flange, the end of intake grill is provided with intake grill flange, intake grill flange is connected with above-mentioned baffler adpting flange, and be provided with seal ring between intake grill flange and baffler adpting flange, the exhaust outlet of blower fan adpting flange and blower fan is tightly connected, fan connecting tube is utilized to be connected with blower fan by baffler, reduce the spoilage of baffler, and installing/dismounting is convenient, good airproof performance,
(3) a kind of muffler for fan for deduster of the present invention, its acoustical panel is made up of two blocks of web plates and the silencing cotton be filled between two blocks of web plates, reduces the weight of acoustical panel, and sound-absorbing effect is good;
(4) a kind of muffler for fan for deduster of the present invention, its exhaust outlet is connected with air draft chimney by anchor ear, reliably easy to connect.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of a kind of muffler for fan for deduster of the present invention;
Fig. 2 is the A-A direction sectional view of Fig. 1.
Label declaration in schematic diagram:
1, shell; 2, silencing cotton; 3, inner casing; 4, acoustical panel; 5, porous sound absorbing pipe; 6, exhaust outlet; 7, intake grill; 8, filter screen; 9, intake grill flange; 10, baffler adpting flange; 11, seal ring; 12, fan connecting tube; 13, blower fan adpting flange.
Embodiment
For understanding content of the present invention further, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.
Embodiment
Composition graphs 1 and Fig. 2, a kind of muffler for fan for deduster of the present embodiment, comprise shell 1, inner casing 3, be located at the silencing cotton 2 between shell 1 and inner casing 3, acoustical panel 4, porous sound absorbing pipe 5, filter screen 8 and fan connecting tube 12, shell 1 and inner casing 3 form cavity, silencing cotton 2 is filled in cavity, inner casing 3 sidewall contacted with silencing cotton 2 is provided with sound-absorption hole, the two ends of inner casing 3 are respectively exhaust outlet 6 and intake grill 7, two or more than two acoustical panel 4 is set gradually in inner casing 3, and acoustical panel 4 is perpendicular to air intake direction, specifically in the present embodiment, according to the size of power of fan and ambient noise grade, acoustical panel 4 arranges 5 pieces, acoustical panel 4 is made up of two blocks of web plates and the silencing cotton be filled between two blocks of web plates, reduce the weight of acoustical panel 4, and sound-absorbing effect is good, porous sound absorbing pipe 5 passes perpendicularly through above-mentioned acoustical panel 4, and this porous sound absorbing pipe 5 is provided with many equally, and is evenly arranged, and in the present embodiment, porous sound absorbing pipe 5 is provided with 9, and the quantity of porous sound absorbing pipe 5 and internal diameter need to arrange according to noise reduction, filter screen 8 is arranged in intake grill 7, and its disassembling, assembling and replacing is convenient.The present invention utilizes multilayer acoustical panel 4 successive elimination air power noise, and the air-flow simultaneously realizing baffler in conjunction with porous sound absorbing pipe 5 passes through, and structure is simple, good muffling effect, cheap for manufacturing cost, and can effectively prevent silencing cotton attract dust, improve the working life of baffler.
Fan connecting tube 12 in the present embodiment is taper, and the large one end of opening is provided with baffler adpting flange 10, one end that opening is little is provided with blower fan adpting flange 13, air in blower fan enters the large baffler of bore by the blower fan air outlet that bore is little, can air velocity be reduced, be conducive to improving erasure effect; The end of intake grill 7 is provided with intake grill flange 9, and intake grill flange 9 is connected with above-mentioned baffler adpting flange 10, and is provided with seal ring 11 between intake grill flange 9 and baffler adpting flange 10, and the exhaust outlet of blower fan adpting flange 13 and blower fan is tightly connected.Exhaust outlet 6 is connected with air draft chimney by anchor ear, reliably easy to connect.Utilize fan connecting tube 12 to be connected with blower fan by baffler, reduce the spoilage of baffler, and installing/dismounting is convenient, good airproof performance.
A kind of muffler for fan for deduster of the present embodiment, is installed between fan of dust remover and air draft chimney.During use, first the air in blower fan enters in fan connecting tube 12, because the cone structure of fan connecting tube 12 can reduce air velocity to a certain extent, can improve erasure effect; When air-flow enters baffler, air, through the filtration of filter screen 8, removes the dust granule in air, effectively prevent silencing cotton adsorption particle and reduces erasure effect; After air-flow enters baffler, a part enters porous sound absorbing pipe 5, and a part enters acoustical panel 4, successive elimination air power noise in the multi-layer structure of baffler; Last air-flow enters air draft chimney from the exhaust outlet 6 of baffler and discharges.A kind of muffler for fan for deduster of the present invention, not only utilizes multilayer acoustical panel 4 successive elimination air power noise, and can effectively prevent silencing cotton attract dust, improve the working life of baffler, structure is simple simultaneously, and good muffling effect is cheap for manufacturing cost.
Schematically above be described the present invention and mode of execution thereof, this description does not have restricted, and also just one of the embodiments of the present invention shown in accompanying drawing, actual structure is not limited thereto.So, if those of ordinary skill in the art enlightens by it, when not departing from the invention aim, designing the mode of structure similar to this technological scheme and embodiment without creationary, all should protection scope of the present invention be belonged to.

Claims (4)

1. the muffler for fan for deduster, comprise shell (1), inner casing (3), be located at the silencing cotton (2) between shell (1) and inner casing (3), it is characterized in that: also comprise acoustical panel (4), porous sound absorbing pipe (5) and filter screen (8), the two ends of described inner casing (3) are respectively exhaust outlet (6) and intake grill (7), two or more than two acoustical panel (4) is set gradually in described inner casing (3), and acoustical panel (4) is perpendicular to air intake direction, described porous sound absorbing pipe (5) passes perpendicularly through acoustical panel (4), this porous sound absorbing pipe (5) is provided with many, and be evenly arranged, described filter screen (8) is arranged in intake grill (7).
2. a kind of muffler for fan for deduster according to claim 1, it is characterized in that: also comprise fan connecting tube (12), described fan connecting tube (12) is taper, and the large one end of opening is provided with baffler adpting flange (10), one end that opening is little is provided with blower fan adpting flange (13), the end of described intake grill (7) is provided with intake grill flange (9), described intake grill flange (9) is connected with above-mentioned baffler adpting flange (10), and be provided with seal ring (11) between intake grill flange (9) and baffler adpting flange (10), described blower fan adpting flange (13) and the exhaust outlet of blower fan are tightly connected.
3. a kind of muffler for fan for deduster according to claim 2, is characterized in that: described acoustical panel (4) is made up of two blocks of web plates and the silencing cotton be filled between two blocks of web plates.
4. a kind of muffler for fan for deduster according to claim 3, is characterized in that: described exhaust outlet (6) is connected with air draft chimney by anchor ear.
CN201410055767.4A 2014-02-19 2014-02-19 A kind of muffler for fan for deduster Expired - Fee Related CN103850987B (en)

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Application Number Priority Date Filing Date Title
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CN103850987A CN103850987A (en) 2014-06-11
CN103850987B true CN103850987B (en) 2016-03-02

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104964091A (en) * 2015-06-18 2015-10-07 南京磁谷科技有限公司 Emptying and silencing integrated pipeline for centrifugal fan
CN104975398A (en) * 2015-07-07 2015-10-14 苏州潮盛印花制版实业有限公司 Textile warping machine with noise reduction device

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2049704U (en) * 1989-04-17 1989-12-20 上海鼓风机厂 Screen type rectangular muffler
CN201696358U (en) * 2010-05-14 2011-01-05 池州市金艺化工有限公司 Noise silencer
CN202301219U (en) * 2011-10-29 2012-07-04 山西晋城无烟煤矿业集团有限责任公司 Throttling pressure reduction type silencer for blower
CN202971345U (en) * 2012-11-13 2013-06-05 湖北江环环保科技有限公司 Silencer for fan of dust collector
CN103307041A (en) * 2012-03-09 2013-09-18 威海鲁源科技环保设备有限公司 Fan silencer for furnace
CN203362639U (en) * 2013-05-31 2013-12-25 红安县金鑫环保设备有限公司 Draught fan inlet and outlet silencer
CN203743083U (en) * 2014-02-19 2014-07-30 江苏常净环保科技有限公司 Fan silencer used for dust remover

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08210298A (en) * 1995-02-06 1996-08-20 Fuji Electric Co Ltd Muffler for blower

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2049704U (en) * 1989-04-17 1989-12-20 上海鼓风机厂 Screen type rectangular muffler
CN201696358U (en) * 2010-05-14 2011-01-05 池州市金艺化工有限公司 Noise silencer
CN202301219U (en) * 2011-10-29 2012-07-04 山西晋城无烟煤矿业集团有限责任公司 Throttling pressure reduction type silencer for blower
CN103307041A (en) * 2012-03-09 2013-09-18 威海鲁源科技环保设备有限公司 Fan silencer for furnace
CN202971345U (en) * 2012-11-13 2013-06-05 湖北江环环保科技有限公司 Silencer for fan of dust collector
CN203362639U (en) * 2013-05-31 2013-12-25 红安县金鑫环保设备有限公司 Draught fan inlet and outlet silencer
CN203743083U (en) * 2014-02-19 2014-07-30 江苏常净环保科技有限公司 Fan silencer used for dust remover

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