CN216975350U - Compound silencer of local ventilator - Google Patents
Compound silencer of local ventilator Download PDFInfo
- Publication number
- CN216975350U CN216975350U CN202123098241.9U CN202123098241U CN216975350U CN 216975350 U CN216975350 U CN 216975350U CN 202123098241 U CN202123098241 U CN 202123098241U CN 216975350 U CN216975350 U CN 216975350U
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- China
- Prior art keywords
- shell
- compound
- sound
- silencer
- fixing plate
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- 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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- 150000001875 compounds Chemical class 0.000 title claims abstract description 29
- 230000003584 silencer Effects 0.000 title claims abstract description 19
- 238000010521 absorption reaction Methods 0.000 claims abstract description 16
- 230000030279 gene silencing Effects 0.000 claims abstract description 12
- 229920000742 Cotton Polymers 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 20
- 229910052742 iron Inorganic materials 0.000 claims description 10
- 239000003381 stabilizer Substances 0.000 claims 2
- 239000006096 absorbing agent Substances 0.000 claims 1
- 238000009413 insulation Methods 0.000 abstract description 12
- 238000009423 ventilation Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000001743 silencing effect Effects 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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Abstract
The technical problem to be solved by the utility model is to provide a technology for reducing local ventilation noise, which can better reduce the noise of a fan, improve the working environment of workers, is convenient to install and replace, and greatly improves the use safety; in order to solve the above problems, the present invention provides a technique for reducing local ventilation noise: the compound silencer of the local ventilator comprises a shell, wherein silencing materials are arranged on the upper surface and the lower surface of the shell, and connecting flanges are arranged at the left end and the right end of the shell; the sound deadening material comprises an inner sound insulation layer arranged on the inner side of the shell and a compound sound insulation layer arranged on the outer side of the shell; preferably, the compound sound insulation layer comprises a sound absorption body, the sound absorption body comprises a first fixing plate arranged outside the shell, silencing cotton is arranged on the first fixing plate, a second fixing plate is arranged on the outer side of the silencing cotton, and the sound absorption body is arranged outside the shell in a semicircular shape and is connected and fixed through a connecting piece; preferably, the sound attenuating cotton is a sponge 10mm thick.
Description
Technical Field
The utility model relates to a technology for reducing local ventilation noise in the field of mine safety, in particular to a local ventilation compound silencer.
Background
In the underground mine, when a drawing type local ventilator is used for drawing turbid air out for operation, larger noise is inevitably generated, and the noise generated by reduction is helped by a ventilator silencer at this time.
The silencer is a matched silencer specially designed for the fan, and has obvious noise reduction effect when applied to practice, but noise emitted by the local ventilator is not very uniform radiation in all directions, is just like a hemispherical noise source, and the frequency noise spectrums of the inlet scoop, the outlet scoop and the body of the local ventilator are basically consistent. Therefore, in order to eliminate the noise, it is necessary to take sound-deadening or sound-insulating measures simultaneously on the suction opening, the air outlet and the body casing of the local ventilator.
Improve the performance of the equipment and reduce the noise of the local ventilator. If the local ventilator for the mine always runs at one place, the noise can be reduced by covering the local ventilator with a sound-proof cover. However, the underground local ventilator is a ventilation device which is frequently moved, the space of a roadway is limited, and the use of a sound-proof shield is unrealistic, so that the purpose of sound attenuation can be achieved only by arranging silencers at an air suction opening and an air outlet of a machine body respectively.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides a technology for reducing the local ventilation noise, which can better reduce the fan noise, improve the working environment of workers, is convenient to install and replace, and greatly improves the use safety.
In order to realize the purpose, the novel adopted technical scheme is as follows: a compound silencer for a local ventilator comprises a shell, wherein silencing materials are arranged on the upper surface and the lower surface of the shell, and connecting flanges are arranged at the left end and the right end of the shell; the silencing material is divided into an inner sound insulation layer arranged on the inner side of the shell and a compound sound insulation layer arranged on the outer side of the shell, and the connecting flange is connected with an air inlet or an air outlet of the fan.
Preferably, the compound puigging is including inhaling the sound body, inhale the sound body including setting up in the outside first fixed plate of casing, set up the amortization cotton on the first fixed plate, the amortization cotton outside sets up the second fixed plate, inhales the sound body and is half circular setting in the casing outside, connects fixedly through the connecting piece.
Preferably, the sound-damping cotton is a sponge 10mm thick.
Preferably, the fixing plate is an iron sheet, and the iron sheet is provided with a sound absorption hole with a diameter of 3 mm.
Preferably, the shell is internally provided with a steady fluid, and the steady fluid is divided into a semicircle at the air inlet end and a conical body behind the semicircle. .
Further preferably, the left end and the right end of the sound absorption body can be fixedly connected with the fan through connecting pieces.
Further preferably, either of the left and right ends of the sound absorbing body may be fixedly connected to one end of the silencer through a connecting member.
It is further preferred that the connector is a circular hoop.
The utility model has the advantages that the compound sound insulation device is additionally arranged on the local ventilator and fixed on the silencing device, thereby achieving better silencing effect, obviously reducing the noise of the local ventilator, improving the working environment of workers, ensuring the health and safety of the workers, using the flange and the connecting piece for installation, facilitating installation and disassembly, and having safe and reliable use.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a left side view of the present invention;
FIG. 3 is an enlarged view of the multiple acoustical layer of the present invention;
reference numerals:
1. the sound absorbing device comprises a shell 2, a flange 3, an inner sound insulating layer 4, a compound sound insulating layer 5, a sound absorbing body 6, a first fixing plate 7, a sound absorbing material 8, a second fixing plate 9, a connecting piece 10, a sound absorbing hole 11 and a flow stabilizing body.
Detailed description of the preferred embodiments
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, and it should be understood that the preferred embodiments described herein are merely for purposes of illustration and explanation, and are not intended to limit the utility model.
It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
Fig. 1 to 3 show an embodiment of a combined silencer for a local ventilator according to the present invention.
The compound silencer for the local ventilator comprises a shell 1, wherein silencing materials 7 are arranged on the inner side surface and the outer side surface of the shell 1, connecting flanges 2 are arranged at the left end and the right end of the shell 1, and the connecting flanges 2 are conveniently connected with a fan, so that the compound silencer for the local ventilator is convenient to install and safe and reliable to connect and use. After the local ventilator is hung and installed, the prefabricated compound sound insulation device of the local ventilator is fixed on an air inlet and an air outlet of the local ventilator, and the silencing effect of the local ventilator is achieved.
The sound-deadening material 7 of the present invention is divided into an inner sound-deadening layer 3 provided inside the casing 1 and a multiple sound-deadening layer 4 provided outside the casing 1.
The main sound absorbing and deadening material of the deadening material 7 was sponge 10mm thick. A first fixing plate is arranged between the compound sound insulation layer 4 and the shell, and a second fixing plate is laid on the outer side surface. The two fixing plates are made of iron sheets, wherein a sound absorption hole 10 with a diameter of 3mm is arranged on the iron sheet of the first fixing plate.
The shell 1 is internally provided with a steady fluid 11 which is divided into a semicircle at the air inlet end and a cone behind the semicircle.
Inhale the sound body 5 and first fixed plate and the compound puigging 4 of second fixed plate besieged city about both ends accessible connecting piece 9 and casing fixed connection. The shell is in a circular tube shape, the connecting piece 9 is a circular hoop, and the circular hoop tightly fixes the compound sound insulation layer 4 on the surface of the shell.
In order to effectively absorb the noise, the sound absorption hole 10 with a diameter of phi 3mm is formed on the first fixing plate, so that the noise generated by the shell can be effectively sold, the air vibration caused by the sound absorption hole can be eliminated through the inner hole structure of the sponge,
the compound sound insulation layer 4 mainly comprises an iron sheet, sponge with the thickness of 10mm and a self-made connecting fitting, wherein a sound absorption hole 10 with the diameter of 3mm is formed in the iron sheet, the sponge with the thickness of 10mm is coated on the processed iron sheet, a semicircular sound absorption body 5 is manufactured according to the specification of a matched fan, the outer side of the semicircular sound absorption body is protected by the iron sheet, and finally the semicircular sound absorption body 5 is enclosed into a cylinder shape by a connecting piece 9 and is connected and fixed with the fan by a connecting flange, so that the effect of reducing noise is achieved.
The specific structure of the compound sound insulation layer 4 shown in fig. 3 comprises a sound absorption body 5, wherein the sound absorption body 5 comprises a first fixing plate 6 arranged outside the casing 1, silencing cotton is arranged on the first fixing plate 6, a second fixing plate 8 is arranged outside the silencing cotton, the sound absorption body 5 is arranged outside the casing 1 in a semicircular shape and is connected and fixed through a connecting piece 9, the noise of the local ventilator is reduced by 20db (a) on average after the compound sound insulation layer is used, and the working environment of workers is improved.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A compound silencer of a local ventilator is characterized by comprising a shell (1), wherein silencing materials (7) are arranged on the inner side surface and the outer side surface of the shell (1), and connecting flanges (2) are arranged at the left end and the right end of the shell (1); the silencing material (7) is divided into an inner sound-proof layer (3) arranged on the inner side of the shell (1) and a compound sound-proof layer (4) arranged on the outer side of the shell (1), and the connecting flange (2) is connected with an air inlet or an air outlet of the fan.
2. A compound silencer for a local ventilator according to claim 1, wherein the compound soundproof layer (4) includes a sound absorbing body (5), the sound absorbing body (5) includes a first fixing plate (6) disposed outside the casing (1), a sound absorbing cotton is disposed on the first fixing plate (6), a second fixing plate (8) is disposed outside the sound absorbing cotton, the sound absorbing body (5) is disposed outside the casing (1) in a semicircular shape, and the sound absorbing bodies (5) are connected and fixed by a connecting member (9) in a circular cylindrical shape.
3. A compound silencer for a ventilator according to claim 2, wherein said silencing cotton is a 10mm thick sponge.
4. The compound silencer for the local ventilator according to claim 2, wherein the first fixing plate is made of iron sheet, and the iron sheet is provided with sound absorption holes (10) with a diameter of 3 mm.
5. A compound silencer for a local ventilator according to claim 1, characterised in that a flow stabilizer (11) is arranged inside the casing (1), and the flow stabilizer (11) is divided into a semi-sphere at the air inlet end and a cone behind the semi-sphere.
6. A compound silencer for a ventilator according to claim 2, characterised in that the sound absorber (5) is fixedly connected to the fan at either of its left and right ends by means of a connecting member (9).
7. A compound locally ventilating fan silencer assembly according to claim 2, characterized in that the connecting elements (9) are round hoops.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123098241.9U CN216975350U (en) | 2021-12-10 | 2021-12-10 | Compound silencer of local ventilator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123098241.9U CN216975350U (en) | 2021-12-10 | 2021-12-10 | Compound silencer of local ventilator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216975350U true CN216975350U (en) | 2022-07-15 |
Family
ID=82345708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123098241.9U Expired - Fee Related CN216975350U (en) | 2021-12-10 | 2021-12-10 | Compound silencer of local ventilator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216975350U (en) |
-
2021
- 2021-12-10 CN CN202123098241.9U patent/CN216975350U/en not_active Expired - Fee Related
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Legal Events
| 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: 20220715 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |