CN103470510A - Roots blower sound-insulation cover - Google Patents
Roots blower sound-insulation cover Download PDFInfo
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- CN103470510A CN103470510A CN2013104540593A CN201310454059A CN103470510A CN 103470510 A CN103470510 A CN 103470510A CN 2013104540593 A CN2013104540593 A CN 2013104540593A CN 201310454059 A CN201310454059 A CN 201310454059A CN 103470510 A CN103470510 A CN 103470510A
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- roots blower
- air
- blower
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Abstract
The invention discloses a Roots blower sound-insulation cover comprising a cover main body used for covering a Roots blower cover body. The lower side of the cover main body is provided with an air exhaust pipeline used for being connected with an air outlet of a Roots blower, and a flange is arranged on an opening of the air exhaust pipeline; the cover main body is further provided with an air inlet and an air exhaust, an air flue is formed between the air inlet and the air exhaust, and the Roots blower is located on the air flue. The Roots blower sound-insulation cover is good in air exchange performance, and can effectively control air power noise radiated on the air inlet portion and the air exhaust portion of the Roots blower in the Roots blower sound-insulation cover, mechanical noise radiated by a machine shell and bearings, noise radiated due to foundation vibration and noise generated due to operation of a blower motor and a transmission gear. Meanwhile, heat generated due to operation of the blower in the Roots blower sound-insulation cover can be discharged so as to guarantee that operation temperature of the blower motor and equipment is normal.
Description
Technical field
The present invention relates to a kind of acoustic hood, relate in particular to a kind of roots blower acoustic hood.
Background technique
Roots blower is the positive displacement blower fan, air quantity and the revolution carried are proportional, reach person between draught fan impeller between trilobal cross impeller end face and blower fan front and rear cover and remain small gap, be transported to a side of discharge in the drive leeward of synchromesh gear from air inlet along inner walls.Product purpose is extensive, spread all over petrochemical industry, building materials, electric power, smelting, chemical fertilizer, mine, harbour, light textile, food, papermaking, aquaculture and the numerous areas such as sewage treatment, environmental protection industry, mostly, for delivery of air, also can be used to carry inflammable, the explosive and corrosive gass such as coal gas, hydrogen, acetylene, carbon dioxide.
The roots blower sound-insulating cover is to solve the Aerodynamic Noise of A (being pneumatic noise) of the air that roots blower produces and the sound-deadening and noise-reducing equipment of eddy current crack two-part main noise.In the design of roots blower sound-insulating cover, Aerodynamic Noise of A is by the driving gear noise, and noise of motor and pressure regulator valve noise are waited until part, and air power noise intensity is the highest, has the greatest impact.Eddy current crack, the pressure pulsation that comprises draught fan impeller when rotation periodically outwards exhaust becomes to cause and the periodicity exhaust sound that produces, and the noise that causes while dividing on the draught fan impeller interface of air whirl.
When turning round under certain operating mode, high intensity noise is respectively from the advancing of blower fan, relief opening, and the positions such as casing and pipeline radiate.Under actual service conditions, the relief opening of blower fan often is connected with air delivering pipeline and seals.Therefore, it is the strongest that the noise of suction port radiation just seems, also the most serious to the interference of environment.The noise known through surveying, that the blower fan gas port spreads out of, its A shelves noise level can reach 105～135 decibels of left and right, and C shelves noise level is 110～140 decibels of left and right.Fan noise intensity is very high, has complexity and continuous frequency content.
Summary of the invention
The purpose of this invention is to provide in a kind of situation that can make roots blower externally be wrapped up by the sound absorption and insulation material and work, the noise produced while reducing the roots blower running, can effectively reduce again the heat energy that the roots blower running produces, make roots blower be in for a long time the roots blower acoustic hood under running well.
For addressing the above problem, a kind of roots blower acoustic hood of the present invention, comprise that the downside of cover body is provided with for connecting the exhaust duct of roots blower exhaust outlet for roots blower being covered on to its inner cover body, and the exhaust duct road junction is provided with flange; Also be provided with intake grill and exhaust port on cover body, between described intake grill and exhaust port, form air channel, roots blower is positioned on air channel.
Described exhaust port inboard is provided with the noise elimination air exhaust channel, and the inboard of noise elimination air exhaust channel is provided with axial-flow blower.
Described noise elimination air exhaust channel vertically arranges, and exhaust port is positioned at noise elimination air exhaust channel downside, and axial-flow blower is positioned at noise elimination air exhaust channel upside.
The arranged outside of described exhaust port has the air draft blinds.
Described intake grill arranged outside has the noise elimination air inlet duct.
In described roots blower acoustic hood side, also be provided with soundproof door.
Roots blower acoustic hood of the present invention compared with prior art, has following beneficial effect:
1) sturdy and durable, stable performance;
2) there is good high, medium and low frequency noise elimination, sound insulation property;
3) equipment is easy for installation, simple, good stability;
4) scavenging performance is good, can effectively control the heat that roots blower acoustic hood inner blower motor and driving gear running produce;
5) the noise reduction noise insulation factor of roots blower acoustic hood is 25～35dB (A).
The accompanying drawing explanation
Fig. 1 is roots blower acoustic enclosure structure schematic diagram of the present invention;
The right elevation that Fig. 2 is Fig. 1;
Fig. 3 be in Fig. 1 A-A to view;
The B-B that Fig. 4 is Fig. 1 is to view.
Embodiment
In order to make those skilled in the art person understand better technical solution of the present invention, below in conjunction with drawings and embodiments, the present invention is described in further detail.
As shown in the figure, a kind of roots blower acoustic hood of the present invention, comprise that the downside of cover body 1 is provided with the exhaust duct 4 for connecting the roots blower exhaust outlet for roots blower 3 being covered on to its inner cover body 1, and the pipeline opening of exhaust duct 4 is provided with flange 5.
The roots blower acoustic hood of this structure is to solve the Aerodynamic Noise of A (being pneumatic noise) of the air that roots blower produces and the sound-deadening and noise-reducing equipment of eddy current crack two-part main noise.
This equipment is connected on roots blower 3 on the reserved exhaust duct 4 on cover body 1 by the cover body 1 of roots blower acoustic hood, pick out by reserved adpting flange 5 wind energy that blower fan produces again, the noise that roots blower 3 runnings are produced absorbs and is isolated in cover body, scavenging performance is good, can effectively control the noise that noise, fan motor and the driving gear running of mechanical noise, the vibration of foundation radiation of air power noise, casing and the bearing radiation of the air inlet of roots blower acoustic hood inner blower and the radiation of exhaust position produce.
Also be provided with intake grill 11 and exhaust port 6 on cover body 1, between described intake grill 11 and exhaust port 6, form air channel, roots blower is positioned on air channel; Described exhaust port 6 inboards are provided with noise elimination air exhaust channel 8, and the inboard of noise elimination air exhaust channel 8 is provided with axial-flow blower 7.
Described noise elimination air exhaust channel 8 vertically arranges, and exhaust port 6 is positioned at noise elimination air exhaust channel 8 downsides, and axial-flow blower 7 is positioned at noise elimination air exhaust channel 8 upsides.
The arranged outside of described exhaust port 6 has air draft blinds 9.
Described intake grill 11 arranged outside have noise elimination air inlet duct 10.
The heat running of blower acoustic hood inner blower produced by axial-flow blower 7 effluxes, normal to guarantee fan motor and the operating temperature of equipment own, while effluxing, by noise elimination air exhaust channel 8 and from the air draft blinds 9 of exhaust port 6 and outside, discharge, the noise produced while guaranteeing roots blower 3 and axial-flow blower 7 running does not leak, naturally sucking outdoor fresh air by intake grill 11 is again taken a breath, and at the outer installation noise elimination of intake grill 11 air inlet duct 10, in case the noise in blower acoustic hood flows out.
In described roots blower acoustic hood side, also be provided with soundproof door 2.Can open soundproof door 2 when roots blower 3 is safeguarded and be safeguarded, around roots blower 3, leave enough spaces, so that the attendant is while inside walking about and can sense space too little not handicapped.
Claims (6)
1. a roots blower acoustic hood, it is characterized in that: comprise that the downside of cover body is provided with for connecting the exhaust duct of roots blower exhaust outlet for roots blower being covered on to its inner cover body, the exhaust duct road junction is provided with flange; Also be provided with intake grill and exhaust port on cover body, between described intake grill and exhaust port, form air channel, roots blower is positioned on air channel.
2. roots blower acoustic hood as claimed in claim 1, it is characterized in that: described exhaust port inboard is provided with the noise elimination air exhaust channel, and the inboard of noise elimination air exhaust channel is provided with axial-flow blower.
3. roots blower acoustic hood as claimed in claim 2, it is characterized in that: described noise elimination air exhaust channel vertically arranges, and exhaust port is positioned at noise elimination air exhaust channel downside, and axial-flow blower is positioned at noise elimination air exhaust channel upside.
4. roots blower acoustic hood as claimed in claim 3, it is characterized in that: the arranged outside of described exhaust port has the air draft blinds.
5. roots blower acoustic hood as claimed in claim 1, it is characterized in that: described intake grill arranged outside has the noise elimination air inlet duct.
6. roots blower acoustic hood as claimed in claim 1, is characterized in that: in described roots blower acoustic hood side, also be provided with soundproof door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104540593A CN103470510A (en) | 2013-09-25 | 2013-09-25 | Roots blower sound-insulation cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104540593A CN103470510A (en) | 2013-09-25 | 2013-09-25 | Roots blower sound-insulation cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103470510A true CN103470510A (en) | 2013-12-25 |
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ID=49795503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013104540593A Pending CN103470510A (en) | 2013-09-25 | 2013-09-25 | Roots blower sound-insulation cover |
Country Status (1)
| Country | Link |
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| CN (1) | CN103470510A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265637A (en) * | 2014-09-16 | 2015-01-07 | 安徽三星环保装备制造有限公司 | Silencing chamber of Roots blower |
| CN104747452A (en) * | 2014-07-22 | 2015-07-01 | 施周平 | Ceiling of sound insulation cover |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5672052A (en) * | 1995-02-20 | 1997-09-30 | Hitachi, Ltd. | Blower muffling apparatus |
| CN201448141U (en) * | 2009-06-26 | 2010-05-05 | 常州市风机制造有限公司 | Acoustic hood |
| CN201944023U (en) * | 2011-01-25 | 2011-08-24 | 厦门绿动力环境治理工程有限公司 | Roots fan with sound insulating device |
| CN102434498A (en) * | 2011-11-24 | 2012-05-02 | 启东市南洋冶金机械成套设备厂 | Air compressor acoustic hood |
| CN202301213U (en) * | 2011-09-21 | 2012-07-04 | 启东启控消声设备有限公司 | Acoustic hood |
| CN202768404U (en) * | 2012-09-05 | 2013-03-06 | 山东海福德机械有限公司 | Noise enclosure for Roots blower |
| CN203516111U (en) * | 2013-09-25 | 2014-04-02 | 江苏远兴环保集团有限公司 | Noise insulation enclosure for roots blower |
-
2013
- 2013-09-25 CN CN2013104540593A patent/CN103470510A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5672052A (en) * | 1995-02-20 | 1997-09-30 | Hitachi, Ltd. | Blower muffling apparatus |
| CN201448141U (en) * | 2009-06-26 | 2010-05-05 | 常州市风机制造有限公司 | Acoustic hood |
| CN201944023U (en) * | 2011-01-25 | 2011-08-24 | 厦门绿动力环境治理工程有限公司 | Roots fan with sound insulating device |
| CN202301213U (en) * | 2011-09-21 | 2012-07-04 | 启东启控消声设备有限公司 | Acoustic hood |
| CN102434498A (en) * | 2011-11-24 | 2012-05-02 | 启东市南洋冶金机械成套设备厂 | Air compressor acoustic hood |
| CN202768404U (en) * | 2012-09-05 | 2013-03-06 | 山东海福德机械有限公司 | Noise enclosure for Roots blower |
| CN203516111U (en) * | 2013-09-25 | 2014-04-02 | 江苏远兴环保集团有限公司 | Noise insulation enclosure for roots blower |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747452A (en) * | 2014-07-22 | 2015-07-01 | 施周平 | Ceiling of sound insulation cover |
| CN104265637A (en) * | 2014-09-16 | 2015-01-07 | 安徽三星环保装备制造有限公司 | Silencing chamber of Roots blower |
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Application publication date: 20131225 |