CN209859611U - Efficient noise reduction silencer - Google Patents
Efficient noise reduction silencer Download PDFInfo
- Publication number
- CN209859611U CN209859611U CN201920315550.0U CN201920315550U CN209859611U CN 209859611 U CN209859611 U CN 209859611U CN 201920315550 U CN201920315550 U CN 201920315550U CN 209859611 U CN209859611 U CN 209859611U
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- cavity
- channel
- passageway
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- holes
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- 230000003584 silencer Effects 0.000 title claims description 12
- 230000009467 reduction Effects 0.000 title claims description 9
- 229920000742 Cotton Polymers 0.000 claims abstract description 22
- 238000010521 absorption reaction Methods 0.000 claims description 9
- 238000005192 partition Methods 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000012774 insulation material Substances 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 239000011521 glass Substances 0.000 claims description 5
- 229920000728 polyester Polymers 0.000 claims description 5
- 239000000835 fiber Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 8
- 230000008030 elimination Effects 0.000 description 15
- 238000003379 elimination reaction Methods 0.000 description 15
- 239000007789 gas Substances 0.000 description 14
- 239000000463 material Substances 0.000 description 10
- 239000011148 porous material Substances 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 4
- 230000030279 gene silencing Effects 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 206010011878 Deafness Diseases 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 2
- 238000005119 centrifugation Methods 0.000 description 2
- 239000002657 fibrous material Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 231100000895 deafness Toxicity 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 208000016354 hearing loss disease Diseases 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Abstract
The utility model belongs to the technical field of the muffler, a muffler of making an uproar falls in high efficiency is proposed, including first passageway and second passageway, the one end of first passageway is inserted in the second passageway, first passageway inserts evenly is provided with a plurality of first through-holes on the end seal of second passageway and its lateral wall, first cavity and second cavity have set gradually along length direction in the second passageway, be provided with the median septum between first cavity and the second cavity, be provided with a plurality of second through-holes on the median septum, all be provided with in first cavity and the second cavity and inhale the sound cotton, in first passageway inserts first cavity, be provided with a plurality of third through-holes on the second cavity lateral wall, the current poor technical problem of the effect of making an uproar falls has been solved.
Description
Technical Field
The utility model belongs to the technical field of the muffler, a muffler of making an uproar falls in high efficiency is related to.
Background
It is well known that the transmission of sound requires air as a medium, and various sounds are transmitted through the vibration frequency of air. 140 db is the highest critical point defined by the eu that leads to complete hearing loss, temporary deafness occurs in more than one minute in a 120 db environment, and normal people can tolerate sound levels between 0 and 110 db. The working medium of the pneumatic drilling machine is compressed air, and in the process of conveying the compressed air, molecules of the air move randomly at high frequency at every moment. Therefore, the pneumatic drilling machine can emit large noise in the operation process, and the drilling machine needs to be provided with a silencer to reduce the noise hazard.
The acoustic absorbing material has little reflection of incident sound energy, which means that sound energy easily enters and transmits through such material; the material of the material should be porous, loose and air permeable, which is a typical porous sound absorbing material, and the porous structure is usually formed by fibrous, granular or foaming materials in the process; the structure is characterized in that: the material has a large number of interconnected micro-pores from the surface to the inside, namely has certain air permeability. The sound insulation material is required to be compact and have no pores or gaps; has a large weight. Such sound-insulating materials have poor sound-absorbing properties because they are dense, difficult to absorb and transmit sound energy, and have strong reflection energy.
The rig belongs to operation equipment under the ore deposit, and the environment is sealed under the ore deposit, leads to the noise that work produced can not fine scattering, seriously threatens the staff health of long-term underground work, and current pneumatic rig muffler passes through the regular decomposition of sound-proof material with gas and sound mostly, reduces gaseous frequency of vibration and reaches the effect of amortization. However, the noise reduction effect of the silencer is not ideal, and is generally over 100 db, and 105 db noise can cause permanent damage to human hearing.
SUMMERY OF THE UTILITY MODEL
The utility model provides a muffler of making an uproar falls in high efficiency has solved the poor technical problem of above-mentioned noise reduction effect.
The technical scheme of the utility model is realized like this:
an efficient noise reducing silencer comprising:
a first channel and a second channel, wherein the first channel and the second channel are arranged in a circular ring shape,
one end of the first channel is inserted into the second channel, the end part of the first channel inserted into the second channel is sealed, and a plurality of first through holes are uniformly arranged on the side wall of the first channel,
a first cavity and a second cavity are sequentially arranged in the second channel along the length direction, a middle partition plate is arranged between the first cavity and the second cavity, a plurality of second through holes are arranged on the middle partition plate, sound-absorbing cotton is arranged in both the first cavity and the second cavity,
the first channel is inserted into the first cavity, and a plurality of third through holes are formed in the side wall of the second cavity.
As a further technical solution, the first channel and the second channel are both cylindrical, and the diameter of the first channel is smaller than that of the second channel.
As a further technical scheme, the sound-absorbing cotton and the sound-insulating material layer are arranged between the inner walls of the first cavities and are made of centrifugal glass cotton.
As a further technical scheme, the middle partition plate is a steel plate.
As a further technical scheme, the sound-absorbing cotton is made of polyester fibers.
Compared with the prior art, the utility model discloses theory of operation and beneficial effect do:
1. the utility model discloses in, in first passageway one end inserted the second passageway, the outside one end that first passageway is located the second passageway is gas inlet, is provided with a plurality of apertures on the lateral wall of the other end, and first passageway passes through aperture and the inside intercommunication of second passageway. The second channel inner chamber is divided into a first cavity and a second cavity, a third through hole is formed in the side wall of the second cavity and used for enabling compressed gas which is subjected to noise reduction to be discharged, and noise reduction cotton in the first cavity and the second cavity is used for absorbing noise. Compressed gas enters from one end of the first channel, enters the first cavity in the second channel through the first through hole, then enters the second cavity through the second through hole on the middle partition plate, is discharged from the third through hole along the movement track of the vortex, and sound-absorbing cotton is arranged in the second channel, so that the noise of the gas is reduced, and the discharged gas decibel is between 80 and 90dB, so that the harm to a human body can be reduced compared with the existing silencer.
2. The utility model discloses in, the little aperture total area of first passageway is greater than 1.6 times first passageway cross-sectional area. When the airflow enters the first channel, the sudden expansion is generated to reduce the stagnation pressure, and the expansion type noise elimination is realized. The silencing cotton is penetrated in the second channel, and the energy absorption type silencing mode is adopted. In the second cavity, a plurality of third through holes which are uniformly distributed are arranged in the upper part area of the side wall of the second cavity, the small-hole type noise elimination principle is utilized, and in addition, the plurality of third through holes are not distributed on the 360-degree circumferential side wall of the second cavity, so the motion track of the gas in the second cavity is in a vortex shape, which is the vortex type noise elimination principle. The expansion type noise elimination, the energy absorption type noise elimination, the eddy type noise elimination and the small hole type noise elimination are integrated, so that the noise elimination effect is excellent.
3. The utility model discloses in, first passageway, second passageway all set up to the cylindric, can easy to assemble and make production, and the outward appearance is small and exquisite to occupy small in size can place in a flexible way.
4. The utility model discloses in, first cavity inner wall department is provided with the sound barrier material layer, and sound barrier material is generally more closely knit, the utility model discloses a centrifugation glass is cotton, can effectively completely cut off the noise.
5. The utility model discloses in, the median septum uses the steel preparation, and steel is fine sound insulation material, can further completely cut off partial noise, has increased muffler overall structure's stability and tightness moreover.
6. In the utility model, the polyester fiber material has a large number of micropores which are mutually communicated and from the surface to the inside, and also has certain air permeability. When sound waves are incident on the surface of the porous material, air vibration in the micropores is caused, and due to friction resistance, viscous resistance of air and heat conduction, a considerable part of sound energy is converted into heat energy, so that the sound absorption effect is achieved.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic sectional view of the present invention;
in the figure: 1-a first channel, 2-a second channel, 3-a first through hole, 4-a first cavity, 5-a second cavity, 6-a middle partition board, 7-sound-absorbing cotton, 8-a second through hole, 9-a third through hole and 10-a sound-insulating material layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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 provides a silencer of making an uproar falls in high efficiency includes:
a first channel 1 and a second channel 2,
one end of the first channel 1 is inserted into the second channel 2, the end part of the first channel 1 inserted into the second channel 2 is sealed, and a plurality of first through holes 3 are uniformly arranged on the side wall of the first channel 1,
a first cavity 4 and a second cavity 5 are sequentially arranged in the second channel 2 along the length direction, a middle clapboard 6 is arranged between the first cavity 4 and the second cavity 5, a plurality of second through holes 8 are arranged on the middle clapboard 6, sound-absorbing cotton 7 is arranged in the first cavity 4 and the second cavity 5,
the first channel 1 is inserted into the first cavity 4, and a plurality of third through holes 9 are arranged on part of the side wall of the second cavity 5.
In this embodiment, one end of the first channel 1 is inserted into the second channel 2, one end of the first channel 1, which is located outside the second channel 2, is a gas inlet, a plurality of small holes are formed in the side wall of the other end of the first channel 1, and the first channel 1 is communicated with the inside of the second channel 2 through the small holes. The inner cavity of the second channel 2 is divided into a first cavity 4 and a second cavity 5, a third through hole 9 is arranged on the side wall of the second cavity 5 and used for discharging the muffled compressed gas, and the muffling cotton in the first cavity 4 and the second cavity 5 is used for absorbing noise.
In this embodiment, compressed gas enters from the one end of first passageway 1, in entering the first cavity 4 in the second passageway 2 through first through-hole 3, then in second through-hole 8 entering second cavity 5 on the median septum 6, discharges from third through-hole 9 along the motion trail of vortex, is provided with in second passageway 2 and inhales sound cotton 7, reduces gaseous noise, and the combustion gas decibel is between 80-90dB, compares in current muffler and can reduce the injury to the human body.
In this embodiment, the total small aperture area of the first channel 1 is greater than 1.6 times the cross-sectional area of the first channel 1. When the gas flow enters the first channel 1, the gas flow is suddenly expanded to reduce the stagnation pressure, and the gas flow is expanded to eliminate the noise. The second channel 2 is penetrated with silencing cotton, which is an energy absorption type silencing mode. In the second cavity, a plurality of third through holes 9 which are uniformly distributed are arranged in the upper part area of the side wall of the second cavity, the small hole type noise elimination principle is utilized, and in addition, the plurality of third through holes 9 are not distributed on the circumferential side wall of the second cavity for 360 degrees, so the motion track of the gas in the second cavity is in a vortex shape, which is the vortex type noise elimination principle. The expansion type noise elimination, the energy absorption type noise elimination, the eddy type noise elimination and the small hole type noise elimination are integrated, so that the noise elimination effect is excellent.
Further, the first channel 1 and the second channel 2 are both cylindrical, and the diameter of the first channel 1 is smaller than that of the second channel 2.
In this embodiment, first passageway 1, second passageway 2 all set up to the cylindric, can easy to assemble and manufacturing production, and the outward appearance is small and exquisite to occupy small in size can place in a flexible way.
Further, a sound insulation material layer 10 is arranged between the sound absorption cotton 7 and the inner wall of the first cavity 4, and the sound insulation material layer 10 is made of centrifugal glass cotton.
In this embodiment, 4 inner walls of first cavity departments are provided with sound barrier material layer 10, and sound barrier material is generally more closely knit, the utility model discloses a centrifugation glass is cotton, can effectively completely cut off the noise.
Further, the intermediate partition 6 is a steel plate.
In this embodiment, 6 uses the steel preparation of median septum, and steel is fine sound insulation material, can further isolated partial noise, has increased muffler overall structure's stability and sturdiness moreover.
Further, the sound absorption cotton 7 is made of polyester fiber.
In this embodiment, the polyester fiber material has a large number of micro-pores which are mutually communicated from the surface to the inside, that is, has a certain air permeability. When sound waves are incident on the surface of the porous material, air vibration in the micropores is caused, and due to friction resistance, viscous resistance of air and heat conduction, a considerable part of sound energy is converted into heat energy, so that the sound absorption effect is achieved.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A high-efficiency noise reduction silencer is characterized by comprising a first channel (1) and a second channel (2),
one end of the first channel (1) is inserted into the second channel (2), the end part of the first channel (1) inserted into the second channel (2) is sealed, and a plurality of first through holes (3) are uniformly arranged on the side wall of the first channel,
a first cavity (4) and a second cavity (5) are sequentially arranged in the second channel (2) along the length direction, a middle partition plate (6) is arranged between the first cavity (4) and the second cavity (5), a plurality of second through holes (8) are arranged on the middle partition plate (6), sound-absorbing cotton (7) is arranged in the first cavity (4) and the second cavity (5),
the first channel (1) is inserted into the first cavity (4), and a plurality of third through holes (9) are formed in part of the side wall of the second cavity (5).
2. A high efficiency noise reducing silencer according to claim 1, characterized in that said first channel (1) and said second channel (2) are cylindrical, the diameter of said first channel (1) being smaller than the diameter of said second channel (2).
3. The high-efficiency noise reduction silencer according to claim 1, wherein a sound insulation material layer (10) is disposed between the sound absorption cotton (7) and the inner wall of the first cavity (4), and the sound insulation material layer (10) is made of centrifugal glass cotton.
4. A high efficiency noise reducing silencer according to claim 1, characterized in that said intermediate partition (6) is a steel plate.
5. The high-efficiency noise reduction silencer according to claim 1, wherein the sound-absorbing cotton (7) is made of polyester fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920315550.0U CN209859611U (en) | 2019-03-13 | 2019-03-13 | Efficient noise reduction silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920315550.0U CN209859611U (en) | 2019-03-13 | 2019-03-13 | Efficient noise reduction silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209859611U true CN209859611U (en) | 2019-12-27 |
Family
ID=68933465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920315550.0U Expired - Fee Related CN209859611U (en) | 2019-03-13 | 2019-03-13 | Efficient noise reduction silencer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209859611U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111720650A (en) * | 2020-06-16 | 2020-09-29 | 新昌县长城空调部件股份有限公司 | Stainless steel silencer joint and manufacturing method thereof |
-
2019
- 2019-03-13 CN CN201920315550.0U patent/CN209859611U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111720650A (en) * | 2020-06-16 | 2020-09-29 | 新昌县长城空调部件股份有限公司 | Stainless steel silencer joint and manufacturing method thereof |
| CN111720650B (en) * | 2020-06-16 | 2021-11-30 | 新昌县长城空调部件股份有限公司 | Stainless steel silencer joint and manufacturing method thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191227 |
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| CF01 | Termination of patent right due to non-payment of annual fee |