CN201944023U - Roots fan with sound insulating device - Google Patents
Roots fan with sound insulating device Download PDFInfo
- Publication number
- CN201944023U CN201944023U CN2011200228965U CN201120022896U CN201944023U CN 201944023 U CN201944023 U CN 201944023U CN 2011200228965 U CN2011200228965 U CN 2011200228965U CN 201120022896 U CN201120022896 U CN 201120022896U CN 201944023 U CN201944023 U CN 201944023U
- Authority
- CN
- China
- Prior art keywords
- roots blower
- silencing apparatus
- sound arrester
- acoustic hood
- sound insulating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a Roots fan with a sound insulating device, comprising a Roots fan arranged on a bracket, a motor and a sound insulating device, wherein the sound insulating device comprises a sound insulating cover and a silencer; the Roots fan and the motor are arranged in the sound insulating cover; the air inlet of the sound insulating cover is arranged at the lower part of the sound insulating cover, and provided with the silencer, the air inlet and the air outlet of the Roots fan are provided with the silencer; the pressure relief port of the Roots fan is arranged in the sound insulating cover and provided with the silencer. By using the utility model, the Roots fan is added with the sound insulating cover, and the air inlet and the air outlet are added with the silencers, so the noise of the Roots fan is effectively reduced, and the noise pollution to the environment is reduced for reaching the national noise standard.
Description
Technical field
The utility model relates to the blower fan field, particularly relates to a kind of low noise roots blower that has sound arrester.
Background technique
Roots blower is the positive displacement blower fan, air quantity and the revolution carried are proportional, between impeller end face and the blower fan front and rear cover and draught fan impeller between the person remain small gap, be transported to a side of discharge from air inlet along inner walls in the drive leeward of synchromesh gear.The blower fan inner chamber does not need lubricant oil, simple in structure, running steadily, stable performance, adapt to multiple use, field such as applied to be widely used in that sewage treatment, flue dust desulfurization, mass transport, gas and flammable explosive gas are carried, heavy oil spray combustion, blast furnace process, aquaculture, pesticide chemical, formaldehyde are synthetic.
Roots blower is a kind of electronic product of very noisy, its noise mainly comprises mechanical noise, the noise of vibration of foundation radiation, the electric moter noise of air power noise, casing and the bearing radiation of suction port and relief opening radiation, and the roots blower strong noise pollution will produce bigger influence to workman and surrounding resident.
Summary of the invention
At the problem of roots blower very noisy, the purpose of this utility model is to design a kind of national criteria for noise that meets, and has the low noise roots blower of sound arrester.
For achieving the above object, the technological scheme that the utility model proposed is, a kind of roots blower that has sound arrester, comprise the roots blower, motor and the sound arrester that are installed on the support, it is characterized in that, described sound arrester comprises acoustic hood and baffler, and described roots blower, motor mounting are in acoustic hood; Described acoustic hood suction port is positioned at the acoustic hood below, and silencing apparatus is installed, and suction port, the relief opening of described roots blower are equipped with silencing apparatus; Described roots blower pressure relief opening is installed in the acoustic hood, and silencing apparatus is installed.
Further, as a kind of improvement of the present invention, the top is provided with a ventilating fan in the described acoustic hood, and its only allows when roots blower is not worked, and described ventilating fan is equipped with a silencing apparatus outward, to reduce the noise that releases from relief opening; Between ventilating fan and silencing apparatus, establish simple and easy check valve, enter thus to prevent roots blower when work outdoor airflow.
Further, the silencing apparatus of described acoustic hood suction port is the folded plate type dissipative muffler.
Further, as a further improvement on the present invention, described can be " L " shape to the pipeline between the volume damper with roots blower relief opening check valve, has reduced the volume damper height, thereby silencing apparatus length is increased.
Further, described roots blower relief opening silencing apparatus outlet diameter can also be designed to greater than inlet diameter, reduce bump, reach the purpose that reduces the regeneration noise collecting pipe.
Further, described roots blower relief opening is divided into resistive, two sections of resistances, middlely is connected with standard flange.
Description of drawings
Fig. 1 is the basic block diagram that has the roots blower of sound arrester described in the utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described further.
As shown in Figure 1, a kind of roots blower that has sound arrester, comprise the roots blower 1 that is installed on the support 3, motor 2, and use acoustic hood 11 to cover, the suction port 9 of roots blower 1, relief opening 5 all is equipped with silencing apparatus (being silencing apparatus 10 and silencing apparatus 6), described acoustic hood 11 suction ports are positioned at the acoustic hood below, and silencing apparatus 12 is installed, silencing apparatus 12 can be the folded plate type dissipative muffler, and described roots blower 1 pressure relief opening is installed in the acoustic hood 11, and silencing apparatus 4 is installed, in addition, the top is provided with a ventilating fan 8 in the acoustic hood 11, and described ventilating fan is equipped with a silencing apparatus 7 outward, to reduce the noise that releases from relief opening; Establish simple and easy check valve at ventilating fan 7 and 8 of silencing apparatuss, enter thus to prevent roots blower when work outdoor airflow.
In addition, as a further improvement on the present invention, described roots blower 1 relief opening check valve is " L " shape to the pipeline between the volume damper, has reduced the volume damper height, thereby silencing apparatus length is increased.
Further, as a further improvement on the present invention, described can be " L " shape to the pipeline between the volume damper with roots blower 1 relief opening check valve, has reduced the volume damper height, thereby silencing apparatus length is increased.Described roots blower 1 relief opening silencing apparatus outlet diameter can also be designed to greater than inlet diameter, reduce bump, reach the purpose that reduces the regeneration noise collecting pipe.
In addition, described roots blower relief opening is divided into resistive, two sections of resistances, middlely is connected with standard flange.
In sum, the utility model is by adding acoustic hood to roots blower, and goes up for devices such as a suction port, air outlet to increase silencing apparatus, effectively reduced the noise of roots blower, reduced the pollution of noise, and reached the relevant noise standard of country surrounding environment.
Although specifically show and introduced the utility model in conjunction with preferred embodiment; but the those skilled in the art should be understood that; in the spirit and scope of the present utility model that do not break away from appended claims and limited; in the form and details the utility model is made various variations, be protection domain of the present utility model.
Claims (6)
1. a roots blower that has sound arrester comprises the roots blower, motor and the sound arrester that are installed on the support, it is characterized in that described sound arrester comprises acoustic hood and baffler, and described roots blower, motor mounting are in acoustic hood; Described acoustic hood suction port is positioned at the acoustic hood below, and silencing apparatus is installed, and suction port, the relief opening of described roots blower are equipped with silencing apparatus; Described roots blower pressure relief opening is installed in the acoustic hood, and silencing apparatus is installed.
2. a kind of roots blower that has sound arrester according to claim 1 is characterized in that, the top is provided with a ventilating fan in the described acoustic hood, and described ventilating fan is equipped with a silencing apparatus outward, establishes simple and easy check valve between ventilating fan and silencing apparatus.
3. a kind of roots blower that has sound arrester according to claim 1 and 2 is characterized in that the silencing apparatus of described acoustic hood suction port is the folded plate type dissipative muffler.
4. a kind of roots blower that has sound arrester according to claim 1 and 2 is characterized in that, described can be " L " shape to the pipeline between the volume damper with roots blower 1 relief opening check valve.
5. a kind of roots blower that has sound arrester according to claim 1 and 2 is characterized in that, described roots blower relief opening silencing apparatus outlet diameter is greater than inlet diameter.
6. a kind of roots blower that has sound arrester according to claim 1 and 2 is characterized in that, that described roots blower relief opening is divided into is resistive, two sections of resistances, middlely be connected with standard flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200228965U CN201944023U (en) | 2011-01-25 | 2011-01-25 | Roots fan with sound insulating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200228965U CN201944023U (en) | 2011-01-25 | 2011-01-25 | Roots fan with sound insulating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201944023U true CN201944023U (en) | 2011-08-24 |
Family
ID=44471367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200228965U Expired - Fee Related CN201944023U (en) | 2011-01-25 | 2011-01-25 | Roots fan with sound insulating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201944023U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244464A (en) * | 2013-04-28 | 2013-08-14 | 山东省章丘鼓风机股份有限公司 | Roots blower pipeline noise reduction device |
| CN103470510A (en) * | 2013-09-25 | 2013-12-25 | 江苏远兴环保集团有限公司 | Roots blower sound-insulation cover |
| CN105351204A (en) * | 2015-11-18 | 2016-02-24 | 宁波升鸿机械设备有限公司 | Air blower provided with silencer |
| CN105484976A (en) * | 2016-01-19 | 2016-04-13 | 苏州帝凯维动物营养有限公司 | Air compressor |
| CN109329165A (en) * | 2018-12-13 | 2019-02-15 | 广州市牧洋机械设备有限公司 | A kind of ship borne type fishery cultivating bait-laying device for fish |
| CN109441827A (en) * | 2018-12-18 | 2019-03-08 | 安徽海螺集团有限责任公司 | Cement kiln flue gas collecting carbonic anhydride purification system noise controller |
| CN114517785A (en) * | 2022-03-23 | 2022-05-20 | 南通恒和环保科技有限公司 | Roots blower sound insulation cover and Roots blower |
-
2011
- 2011-01-25 CN CN2011200228965U patent/CN201944023U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244464A (en) * | 2013-04-28 | 2013-08-14 | 山东省章丘鼓风机股份有限公司 | Roots blower pipeline noise reduction device |
| CN103470510A (en) * | 2013-09-25 | 2013-12-25 | 江苏远兴环保集团有限公司 | Roots blower sound-insulation cover |
| CN105351204A (en) * | 2015-11-18 | 2016-02-24 | 宁波升鸿机械设备有限公司 | Air blower provided with silencer |
| CN105484976A (en) * | 2016-01-19 | 2016-04-13 | 苏州帝凯维动物营养有限公司 | Air compressor |
| CN109329165A (en) * | 2018-12-13 | 2019-02-15 | 广州市牧洋机械设备有限公司 | A kind of ship borne type fishery cultivating bait-laying device for fish |
| CN109441827A (en) * | 2018-12-18 | 2019-03-08 | 安徽海螺集团有限责任公司 | Cement kiln flue gas collecting carbonic anhydride purification system noise controller |
| CN109441827B (en) * | 2018-12-18 | 2024-04-12 | 安徽海螺集团有限责任公司 | Noise control device of cement kiln flue gas carbon dioxide trapping and purifying system |
| CN114517785A (en) * | 2022-03-23 | 2022-05-20 | 南通恒和环保科技有限公司 | Roots blower sound insulation cover and Roots blower |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110824 Termination date: 20140125 |