CN211009296U - Air blower air inlet silencer used outdoors and indoors - Google Patents
Air blower air inlet silencer used outdoors and indoors Download PDFInfo
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- CN211009296U CN211009296U CN201921717100.0U CN201921717100U CN211009296U CN 211009296 U CN211009296 U CN 211009296U CN 201921717100 U CN201921717100 U CN 201921717100U CN 211009296 U CN211009296 U CN 211009296U
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- air inlet
- air
- flange
- noise elimination
- silencer
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Abstract
The utility model provides a be used for outdoor indoor air-blower air intake silencer, this silencer is L shape silencer, L shape silencer including noise elimination barrel and an air inlet section of thick bamboo, an air inlet section of thick bamboo one end welding is in noise elimination barrel lower part, another tip of an air inlet section of thick bamboo has fan flange, evenly be provided with the micropore of admitting air on the wall body of noise elimination barrel upper end circumference, and the upper end of noise elimination barrel has the upper flange, the lower tip of noise elimination barrel has the lower flange, the upper flange passes through the upper cover shutoff, the lower flange passes through the lower cover shutoff, the utility model discloses decibel number that can the at utmost reduce the air-blower noise.
Description
Technical Field
The utility model belongs to the technical field of metallurgy, machinery, chemical industry etc., especially, relate to an air-blower air intake silencer for it is outdoor indoor.
Background
In many industries such as metallurgy, machinery, chemical engineering and the like, a large number of blowers are widely applied as necessary production equipment in the whole production process. The noise generated by the air suction inlet of the blower is a troublesome task for factories and environmental protection departments all the time.
The traditional method is that a straight-through impedance muffler is arranged at an air suction opening, and the muffler mainly absorbs and reduces sound due to the principle of the muffling effect, has poor muffling effect and is difficult to meet the supervision requirements of environmental protection departments generally.
Like the existing common straight-through impedance muffler, the blower noise is directly transmitted from the inlet connecting flange 401 of the common straight-through impedance muffler shown in fig. 3 (in the figure, 101 is the air inlet, 201 is the muffler cylinder, 301 is the sound absorption cotton, 401 is the connecting flange) to the air inlet 101, and only a part of diffracted sound waves are absorbed by the sound absorption cotton 301 to reduce part of the noise. Most of the noise is directly radiated to the atmosphere through the hollow portion of the muffler cylinder 201.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve the defect that above-mentioned prior art exists, provide a be used for outdoor indoor air-blower air intake silencer, decibel that can maximum noise reduction.
The utility model adopts the following technical scheme:
the utility model provides a silencer for air-blower air intake indoor outdoor, this silencer is L shape silencer, L shape silencer include noise elimination barrel and air inlet section of thick bamboo, air inlet section of thick bamboo one end welding is in noise elimination barrel lower part, air inlet section of thick bamboo other end has the fan flange, evenly be provided with the micropore of admitting air on the circumference wall body of noise elimination barrel upper end, and the upper end of noise elimination barrel has an upper flange, the lower tip of noise elimination barrel has the lower flange, the upper cover is installed on the upper flange, the upper flange passes through the upper cover shutoff, the lower cover is installed on the lower flange, the lower flange passes through the lower cover shutoff, the internal noise elimination cotton that has laid of noise elimination.
The invention further adopts the technical scheme that a plurality of air inlet micropores are formed on the cylindrical surface of the upper end enclosure.
The utility model has the advantages that:
the utility model provides a thereby be used for outdoor indoor air-blower air intake silencer falls with the distance that changes the sound wave in the direction that changes the sound wave propagation, falls with microporous filter's mode simultaneously and falls and make an uproar to reach the good mesh of making an uproar of falling.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a top view of the present invention;
fig. 3 is a schematic diagram of a structure of a through-type impedance muffler in the background art.
In the figure, 1-L shaped silencer, 2-air inlet micropore, 3-silencing cotton, 4-silencing cylinder, 5-air inlet cylinder, 6-upper end enclosure, 7-lower end enclosure, 8-upper flange, 9-lower flange and 10-fan connecting flange.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention are clearly and completely described below, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1-2, the utility model discloses a air-blower air intake silencer for outdoor indoor, this silencer is L shape silencer 1, L shape silencer 1 including noise elimination barrel 4 and air inlet section of thick bamboo 5, the welding of 5 one ends of air inlet section of thick bamboo is in the 4 lower parts of noise elimination barrel, another tip of air inlet section of thick bamboo 5 has fan flange 10, evenly be provided with air inlet micropore 2 on the circumference wall body of noise elimination barrel 4 upper end, the noise is at the increase of noise elimination barrel 4 internal reflection distance, the sound attenuation is very big, and the upper end of noise elimination barrel 4 has upper flange 8, the lower tip of noise elimination barrel 4 has lower flange 9, upper flange 8 passes through the shutoff of upper cover 6, lower flange 9 passes through the shutoff of lower flange 9, noise elimination barrel 4 has laid noise elimination cotton 3.
The invention further adopts the technical scheme that a plurality of air inlet micropores 2 are formed on the cylindrical surface of the upper end enclosure 6. The air inlet quantity can be improved, and the air blower is suitable for large-flow air blowers.
The working mode of the invention is as follows:
the air intake of the blower is bent through the air intake micropores 2 on the L-shaped silencer 1 and then enters the silencing cylinder 4 of the L-shaped silencer 1, then is bent and enters the air inlet cylinder 5 of the L-shaped silencer 1, and finally enters the inlet of the blower, the sound wave generated by the blower enters the silencing cylinder 4 through the air inlet cylinder 5, the propagation direction of the sound wave in the silencing cylinder 4 is changed, the sound wave is not directly radiated from the micropores along with the change of the direction of the air flow, but is reflected on the arc-shaped wall surface of the silencing cylinder 4 of the micropore L-shaped silencer 1 for multiple times, and only a small part of noise leaks out under the combined action of the filtering of the air intake micropores and the sound absorption of the silencing surface 3, so that the good noise reduction effect is.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (2)
1. The muffler is an L-shaped muffler, the L-shaped muffler comprises a muffling cylinder body and an air inlet cylinder, one end of the air inlet cylinder is welded to the lower portion of the muffling cylinder body, the other end of the air inlet cylinder is provided with a fan connecting flange, air inlet micropores are uniformly formed in the circumferential wall body of the upper end of the muffling cylinder body, an upper flange is arranged at the upper end of the muffling cylinder body, a lower flange is arranged at the lower end of the muffling cylinder body, an upper end socket is arranged on the upper flange, a lower end socket is arranged on the lower flange, and muffling cotton is laid in the muffling cylinder body.
2. The silencer for the air inlet of the blower used outdoors and indoors according to claim 1, wherein a plurality of air inlet micropores are formed in the cylindrical surface of the upper end socket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921717100.0U CN211009296U (en) | 2019-10-14 | 2019-10-14 | Air blower air inlet silencer used outdoors and indoors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921717100.0U CN211009296U (en) | 2019-10-14 | 2019-10-14 | Air blower air inlet silencer used outdoors and indoors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211009296U true CN211009296U (en) | 2020-07-14 |
Family
ID=71476851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921717100.0U Active CN211009296U (en) | 2019-10-14 | 2019-10-14 | Air blower air inlet silencer used outdoors and indoors |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211009296U (en) |
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2019
- 2019-10-14 CN CN201921717100.0U patent/CN211009296U/en active Active
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