CN209925307U - Pipeline impedance silencing device - Google Patents
Pipeline impedance silencing device Download PDFInfo
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- CN209925307U CN209925307U CN201920521785.5U CN201920521785U CN209925307U CN 209925307 U CN209925307 U CN 209925307U CN 201920521785 U CN201920521785 U CN 201920521785U CN 209925307 U CN209925307 U CN 209925307U
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- sound
- urceolus
- wall
- sound absorption
- sound absorbing
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- 230000030279 gene silencing Effects 0.000 title claims abstract description 6
- 238000010521 absorption reaction Methods 0.000 claims abstract description 27
- 239000004744 fabric Substances 0.000 claims abstract description 10
- 239000011521 glass Substances 0.000 claims abstract description 10
- 239000011490 mineral wool Substances 0.000 claims abstract description 10
- 239000011248 coating agent Substances 0.000 claims abstract description 5
- 238000000576 coating method Methods 0.000 claims abstract description 5
- 230000003584 silencer Effects 0.000 claims description 8
- 230000010349 pulsation Effects 0.000 abstract description 8
- 208000002925 dental caries Diseases 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
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- Pipe Accessories (AREA)
- Exhaust Silencers (AREA)
Abstract
The utility model discloses a pipeline hinders anti silencing device, including the urceolus to and the interior sound absorbing layer that attaches to the urceolus inner wall, along the extending direction of urceolus, the inner intracavity of the urceolus of inner wall with the sound absorbing layer is equipped with vertically and horizontally staggered and cuts apart the sound body of inhaling of a plurality of independent separation cavitys with the inner chamber, inhales the one end that the sound body is located the urceolus air intake and sets up to the toper. The sound absorption layer is provided with a sound absorption coating, rock wool, glass cloth and a perforated plate in sequence from the inner wall of the outer barrel to the inner cavity. The sound absorption body is sequentially provided with a perforated plate, glass cloth and rock wool from outside to inside. Adopt the utility model discloses a design, the pulsation that produces when falling into several parts with pulsating gas and eliminating compressed air and carrying in the pipeline, urceolus sound absorbing layer and middle sound absorbing body noise absorption.
Description
Technical Field
The utility model relates to an silencing device, especially a pipeline hinders silencing device.
Background
When a human body is in a noise environment, the working efficiency is influenced, and great harm is generated to the health of the human body. The reasons for noise generation are many: mechanical equipment operating noise, man-made noise, air delivery duct noise, and the like. The compressed air is conveyed in the pipeline to generate higher noise, and particularly, the air conveyed by the blower belongs to the compressed air in the outlet pipeline, so that the compressed air has higher noise and larger pulsation. The common silencer can only absorb less noise energy generally, and the pulsation noise is difficult to eliminate.
Disclosure of Invention
The purpose of the invention is as follows: an object of the utility model is to solve present air-blower conveying gas and have great pulsation and produce the problem of higher noise in conveying line.
The technical scheme is as follows: the utility model provides a following technical scheme: a pipeline impedance silencer comprises an outer barrel and a sound absorption layer attached to the inner wall of the outer barrel, wherein sound absorption bodies which are criss-cross and divide the inner cavity into a plurality of independent separated cavities are arranged in the inner cavity of the outer barrel with the sound absorption layer attached to the inner wall along the extension direction of the outer barrel.
The design of a plurality of independent isolated cavities is adopted, and the pulsating gas is divided into a plurality of parts to eliminate the pulsation generated when the compressed air is conveyed in the pipeline.
Further, the sound-absorbing body is integrally molded.
The design of integrated molding is adopted, and the cost of the joint of the two sound absorbing bodies forming the isolation cavity is reduced.
Furthermore, the sound absorption layer is provided with a sound absorption coating, rock wool, glass cloth and a porous plate in sequence from the inner wall of the outer barrel to the inner cavity.
Furthermore, one end, located at the air inlet of the outer barrel, of the sound absorbing body is conical.
The toper is the triangle toper, and adopts isosceles triangle toper as far as possible for the pressure that receives on the both sides of same sound-absorbing body wall is equal, prevents to receive the pressure inconsistent and leads to absorbing the sound body and produce the vibration.
Furthermore, the sound absorption body is sequentially provided with a perforated plate, glass cloth and rock wool from outside to inside.
Has the advantages that: compared with the prior art: adopt the utility model discloses a design, the pulsation that produces when falling into several parts with pulsating gas and eliminating compressed air and carrying in the pipeline, urceolus sound absorbing layer and middle sound absorbing body noise absorption.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of embodiment 2 of the present invention;
fig. 3 is a schematic sectional view of the outer tube of the present invention.
Detailed Description
The present invention is further illustrated by the following figures and specific examples, which are to be understood as illustrative only and not as limiting the scope of the invention, which is to be given the full breadth of the appended claims and any and all equivalent modifications thereof which may occur to those skilled in the art upon reading the present specification.
Example 1
As shown in attached figures 1 and 3, the pipeline impedance silencer comprises an outer cylinder and a sound absorption layer attached to the inner wall of the outer cylinder, wherein sound absorption bodies 2 which are criss-cross and divide the inner cavity into a plurality of independent isolated cavities 1 are arranged in the inner cavity of the outer cylinder with the sound absorption layer attached to the inner wall along the extension direction of the outer cylinder.
The design of a plurality of independent isolated cavities is adopted, and the pulsating gas is divided into a plurality of parts to eliminate the pulsation generated when the compressed air is conveyed in the pipeline.
The sound absorption layer is provided with a sound absorption coating 3, rock wool 4, glass cloth 5 and a perforated plate 6 in sequence from the inner wall of the outer cylinder to the inner cavity.
One end of the sound absorption body 2, which is positioned at the air inlet of the outer cylinder, is set to be conical.
The toper is the triangle toper, and adopts isosceles triangle toper as far as possible for the pressure that receives on the both sides of same sound-absorbing body wall is equal, prevents to receive the pressure inconsistent and leads to absorbing the sound body and produce the vibration.
The sound absorbing body 2 is provided with a perforated plate 6, glass cloth 5 and rock wool 4 in sequence from outside to inside.
Example 2
As shown in the attached figures 2 and 3, the pipeline impedance silencer comprises an outer cylinder and a sound absorption layer attached to the inner wall of the outer cylinder, wherein an integrally formed sound absorption body 2 which is criss-cross and divides the inner cavity into a plurality of independent isolated cavities 1 is arranged in the inner cavity of the outer cylinder with the sound absorption layer attached to the inner wall along the extension direction of the outer cylinder.
The design of a plurality of independent isolated cavities is adopted, and the pulsating gas is divided into a plurality of parts to eliminate the pulsation generated when the compressed air is conveyed in the pipeline.
The sound absorption layer is provided with a sound absorption coating 3, rock wool 4, glass cloth 5 and a perforated plate 6 in sequence from the inner wall of the outer cylinder to the inner cavity.
One end of the sound absorption body 2, which is positioned at the air inlet of the outer cylinder, is set to be conical.
The toper is the triangle toper, and adopts isosceles triangle toper as far as possible for the pressure that receives on the both sides of same sound-absorbing body wall is equal, prevents to receive the pressure inconsistent and leads to absorbing the sound body and produce the vibration.
The sound absorbing body 2 is provided with a perforated plate 6, glass cloth 5 and rock wool 4 in sequence from outside to inside.
Claims (5)
1. The utility model provides a pipeline impedance silencing device, includes the urceolus to and the sound absorbing layer of interior attached to urceolus inner wall, its characterized in that: along the extending direction of the outer cylinder, the inner cavity of the outer cylinder with the sound absorbing layer on the inner wall is internally provided with sound absorbing bodies which are criss-cross and divide the inner cavity into a plurality of independent separated cavities.
2. The pipe impedance silencer assembly of claim 1, wherein: the sound absorption body is integrally formed.
3. The pipe impedance silencer assembly of claim 1, wherein: the sound absorption layer is provided with a sound absorption coating, rock wool, glass cloth and a perforated plate in sequence from the inner wall of the outer barrel to the inner cavity.
4. The pipe impedance silencer assembly of claim 1 or 2, wherein: the sound absorbing body is arranged at one end of the air inlet of the outer barrel and is conical.
5. The pipe impedance silencer assembly of claim 1 or 2, wherein: the sound absorption body is sequentially provided with a perforated plate, glass cloth and rock wool from outside to inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920521785.5U CN209925307U (en) | 2019-04-17 | 2019-04-17 | Pipeline impedance silencing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920521785.5U CN209925307U (en) | 2019-04-17 | 2019-04-17 | Pipeline impedance silencing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209925307U true CN209925307U (en) | 2020-01-10 |
Family
ID=69074178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920521785.5U Active CN209925307U (en) | 2019-04-17 | 2019-04-17 | Pipeline impedance silencing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209925307U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115717567A (en) * | 2022-12-16 | 2023-02-28 | 上海科技大学 | Muffling device for gas turbine intake system |
-
2019
- 2019-04-17 CN CN201920521785.5U patent/CN209925307U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115717567A (en) * | 2022-12-16 | 2023-02-28 | 上海科技大学 | Muffling device for gas turbine intake system |
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