CN214171656U - Box noise eliminator of ventilation pipeline - Google Patents
Box noise eliminator of ventilation pipeline Download PDFInfo
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- CN214171656U CN214171656U CN202023279412.3U CN202023279412U CN214171656U CN 214171656 U CN214171656 U CN 214171656U CN 202023279412 U CN202023279412 U CN 202023279412U CN 214171656 U CN214171656 U CN 214171656U
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Abstract
The utility model relates to a box type noise elimination device of a ventilation pipeline, which comprises a first air pipe, a fixed cylinder, a second air pipe, a movable cylinder and a noise elimination lining part; the first air pipe is connected with one end of the fixed cylinder, and the other end of the fixed cylinder is provided with an opening; the second air pipe is connected with one end of the movable cylinder, and the other end of the movable cylinder is arranged in an open manner; the outer diameter of one open end of the movable cylinder is equal to the inner diameter of one open end of the fixed cylinder, and the open end of the movable cylinder is inserted into the open end of the fixed cylinder; the silencing lining part is attached to the inner wall of the movable cylinder, and the outer wall of the movable cylinder is fixedly connected with the outer wall of the fixed cylinder through a connecting part. Utilize the fixed section of thick bamboo of uncovered setting and a butt joint formation noise elimination module of activity section of thick bamboo, when sound absorbent became invalid, easily disassembled and easily change sound absorbent.
Description
Technical Field
The utility model relates to a box noise eliminator of ventilation pipeline.
Background
Resistive mufflers use the sound absorbing action of sound absorbing materials to muffle sound. The structure is that the sound absorption material is fixed on the inner wall of the pipeline in which the air flow flows, or arranged in a certain mode in the pipeline or the shell to form a resistance silencer, and the sound absorption material can partially absorb the sound energy incident on the sound absorption material. The acoustic energy is absorbed due to the porosity and bulkiness of the sound absorbing material. When sound waves enter the pores, they cause the air and material in the pores to vibrate slightly, causing a considerable portion of the sound to be converted into heat energy and absorbed by the friction and viscous drag. The silencing module installed in the air conditioning pipeline is also a resistance silencer, and because the air contains dust particles, the dust particles are easy to adhere to the sound-absorbing material to block the gap of the sound-absorbing material, so that the sound-absorbing material is hardened, and the sound-absorbing effect is lost.
Disclosure of Invention
The utility model aims to solve the above problem, provide an easy to maintain's box noise eliminator of ventilation pipeline, specifically realize by following technical scheme:
a box type noise elimination device for a ventilation pipeline comprises a first air pipe, a fixed cylinder, a second air pipe, a movable cylinder and a noise elimination lining piece; the first air pipe is connected with one end of the fixed cylinder, and the other end of the fixed cylinder is provided with an opening; the second air pipe is connected with one end of the movable cylinder, and the other end of the movable cylinder is arranged in an open manner; the outer diameter of one open end of the movable cylinder is equal to the inner diameter of one open end of the fixed cylinder, and the open end of the movable cylinder is inserted into the open end of the fixed cylinder; the silencing lining part is attached to the inner wall of the movable cylinder, and the outer wall of the movable cylinder is fixedly connected with the outer wall of the fixed cylinder through a connecting part.
The box-type silencing device for the ventilation pipeline is further designed in that a limiting ring is arranged on the inner wall of the fixed cylinder, and the open end of the movable cylinder abuts against the limiting ring.
The box type silencing device for the ventilation pipeline is further designed in that a pair of screw rods are symmetrically and longitudinally arranged on the outer wall of the fixed cylinder, a connecting block is arranged on the outer wall of the movable cylinder, the connecting block is provided with a through hole, and the screw rods are inserted into the connecting block and are fixedly connected through nuts; the screw, the connecting block and the nut form the connecting piece.
The box type silencing device for the ventilation pipeline is further designed in that the second air pipe is connected with a telescopic pipe.
The utility model has the advantages that:
utilize the fixed section of thick bamboo of uncovered setting and a butt joint formation noise elimination module of activity section of thick bamboo, when sound absorbent became invalid, easily disassembled and easily change sound absorbent.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
The invention is further described with reference to the drawings and examples in the following description:
the box type noise elimination device for the ventilation pipeline comprises a first air pipe 1, a fixed cylinder 2, a second air pipe 3, a movable cylinder 4 and a noise elimination lining part 5; the first air pipe is connected with one end of the fixed cylinder, and the other end of the fixed cylinder is provided with an opening; the second air pipe is connected with one end of the movable cylinder, and the other end of the movable cylinder is arranged in an open manner; the outer diameter of one open end of the movable cylinder is equal to the inner diameter of one open end of the fixed cylinder, and the open end of the movable cylinder is inserted into the open end of the fixed cylinder; the silencing lining part is attached to the inner wall of the movable cylinder, and the outer wall of the movable cylinder is fixedly connected with the outer wall of the fixed cylinder through a connecting part 6.
When the air conditioner is applied, the air conditioner is connected in series in a ventilation pipeline through the first air pipe 1 and the second air pipe 3, and when air flows through the movable cylinder, the air conditioner absorbs sound through the sound attenuation lining part, so that the noise of the ventilation pipeline is reduced. When the silencing lining part fails, the connecting part 6 is opened, the movable cylinder is pulled out from the fixed cylinder, and then the silencing lining part is replaced.
The inner wall of the fixed cylinder is provided with a limiting ring 7, and the open end of the movable cylinder is abutted against the limiting ring. The load when the movable cylinder is fastened acts on the limiting ring 7 to protect the fixed cylinder.
Specifically, a pair of screws 61 are symmetrically and longitudinally arranged on the outer wall of the fixed cylinder, a connecting block 62 is arranged on the outer wall of the movable cylinder, the connecting block is provided with a through hole, and the screws are inserted into the connecting block and are fixedly connected through nuts 63; the screw, the connecting block and the nut form the connecting piece.
The second air pipe is connected with a telescopic pipe 8, and the first air pipe and the second air pipe are kept in a connection state in the whole maintenance operation process by arranging the telescopic pipe 8.
The embodiment utilizes the fixed section of thick bamboo and the butt joint of activity section of thick bamboo that the uncovered set up to form noise elimination module, when sound absorbent became invalid, easily disassembles and easily changes sound absorbent.
Claims (4)
1. A box type noise elimination device for a ventilation pipeline is characterized by comprising a first air pipe, a fixed cylinder, a second air pipe, a movable cylinder and a noise elimination lining piece; the first air pipe is connected with one end of the fixed cylinder, and the other end of the fixed cylinder is provided with an opening; the second air pipe is connected with one end of the movable cylinder, and the other end of the movable cylinder is arranged in an open manner; the outer diameter of one open end of the movable cylinder is equal to the inner diameter of one open end of the fixed cylinder, and the open end of the movable cylinder is inserted into the open end of the fixed cylinder; the silencing lining part is attached to the inner wall of the movable cylinder, and the outer wall of the movable cylinder is fixedly connected with the outer wall of the fixed cylinder through a connecting part.
2. The box type muffler device for the ventilation pipeline as claimed in claim 1, wherein the inner wall of the fixed cylinder is provided with a limit ring, and the open end of the movable cylinder abuts against the limit ring.
3. The box type muffler device for the ventilation pipeline, according to claim 1, is characterized in that a pair of screws are symmetrically and longitudinally arranged on the outer wall of the fixed cylinder, a connecting block is arranged on the outer wall of the movable cylinder, the connecting block is provided with a through hole, and the screws are inserted into the connecting block and are fixedly connected through nuts; the screw, the connecting block and the nut form the connecting piece.
4. The box muffler device for a ventilation pipe of claim 1, wherein a telescopic pipe is connected to the second air pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023279412.3U CN214171656U (en) | 2020-12-30 | 2020-12-30 | Box noise eliminator of ventilation pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023279412.3U CN214171656U (en) | 2020-12-30 | 2020-12-30 | Box noise eliminator of ventilation pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214171656U true CN214171656U (en) | 2021-09-10 |
Family
ID=77612132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023279412.3U Active CN214171656U (en) | 2020-12-30 | 2020-12-30 | Box noise eliminator of ventilation pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214171656U (en) |
-
2020
- 2020-12-30 CN CN202023279412.3U patent/CN214171656U/en active Active
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