CN216744874U - Ventilation noise eliminator - Google Patents
Ventilation noise eliminator Download PDFInfo
- Publication number
- CN216744874U CN216744874U CN202220151086.8U CN202220151086U CN216744874U CN 216744874 U CN216744874 U CN 216744874U CN 202220151086 U CN202220151086 U CN 202220151086U CN 216744874 U CN216744874 U CN 216744874U
- Authority
- CN
- China
- Prior art keywords
- shell
- noise
- frame
- ventilation
- sound absorption
- Prior art date
- 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.)
- Active
Links
- 238000009423 ventilation Methods 0.000 title claims abstract description 27
- 238000010521 absorption reaction Methods 0.000 claims abstract description 23
- 229920000742 Cotton Polymers 0.000 claims abstract description 22
- 230000030279 gene silencing Effects 0.000 claims abstract description 22
- 230000008030 elimination Effects 0.000 claims abstract description 5
- 238000003379 elimination reaction Methods 0.000 claims abstract description 5
- 230000003584 silencer Effects 0.000 claims description 7
- 239000011159 matrix material Substances 0.000 claims description 3
- 238000010079 rubber tapping Methods 0.000 abstract description 8
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 8
- 239000011148 porous material Substances 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005034 decoration Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Images
Landscapes
- Exhaust Silencers (AREA)
Abstract
A ventilation noise-abatement equipment belongs to environmental protection facility, which is composed of frame, noise-abatement diversion tile, self-tapping screw, connecting pipe, sound-absorbing cotton, shell, and hole shell. The air inlet and outlet of the ventilation and noise elimination device is taken as the reference of the front and back direction, and the connecting pipes are uniformly arranged and welded on the left side surface and the right side surface of the frame; the hole shell is arranged inside the upper surface, the lower surface, the left surface and the right surface of the frame; the shell is arranged outside the upper, lower, left and right surfaces of the frame; sound absorption cotton is filled between the hole shell and the outer shell to form a sound absorption wall; the silencing guide shoe is arranged on the connecting pipe on the left side surface and the right side surface. The utility model discloses both can be applicable to the high frequency noise, also can be applicable to low intermediate frequency noise, can satisfy the ventilation demand, can reduce exhaust noise through self structure again.
Description
Technical Field
The utility model belongs to the technical field of the environmental protection facility relates to the silencer, especially relates to a ventilation noise eliminator.
Background
With the rapid development of the industry and the construction industry, noise is inevitably generated in the use process of various devices, and the work and life of people are influenced by serious noise pollution. Especially in factories such as power plants and chemical plants, various devices generate a great deal of noise in production, the noise value is often over 85dB, and the work and life in the environment are harmful to the health of people. Most of the existing mufflers on the market are resistive mufflers, impedance combined mufflers, orifice group mufflers and the like, each muffler has the characteristics and can be applied to specific application occasions, but certain limitations exist, for example, the resistive mufflers have good high-frequency absorptivity, but are easy to age to form powder, the performance of the mufflers is seriously reduced, media can be polluted, and the muffling performance of the impedance combined mufflers, the orifice group mufflers and the like is far inferior to that of the resistive mufflers.
The existing silencer is used for silencing noise through a single channel, although the ventilation quantity is met, the noise is intensively transmitted and the transmission speed is too high, so that the silencing is not thorough enough, and the using effect of the silencer is reduced. A ventilation noise eliminator is a silencer which combines a resistive structure and a resistant structure, can be suitable for high-frequency noise and low-intermediate-frequency noise, can meet the ventilation requirement, and can reduce exhaust noise through the structure of the silencer.
Disclosure of Invention
The utility model provides a can reduce through the way on the basis that satisfies the air volume, the noise of the various frequencies of furthest reduction, be suitable for the frequency bandwidth, simple manufacture's a combined type silencer.
A ventilation noise-abatement device is composed of a frame, a noise-abatement flow-guiding tile, a self-tapping screw, a connecting pipe, a sound-absorbing cotton, a shell and a hole shell. The air inlet and outlet of the ventilation and noise elimination device are taken as the reference of the front and back directions, and the connecting pipes are uniformly arranged and welded on the left side surface and the right side surface of the frame; the hole shell is arranged inside the upper surface, the lower surface, the left surface and the right surface of the frame; the shell is arranged outside the upper, lower, left and right surfaces of the frame; sound absorption cotton is filled between the hole shell and the outer shell to form a sound absorption wall; the silencing guide shoe is arranged on the connecting pipe on the left side and the right side by using self-tapping screws according to the principle of matrix dislocation.
The frame is a square or rectangular frame made of section steel, and is a supporting system of the device, and the size of the channel is determined according to the vent to be treated.
The connecting pipe material and the frame material are welded on the left side and the right side of the frame and are uniformly arranged so as to install the silencing guide shoe.
The hole shell is a thin plate, small holes are uniformly distributed on the hole shell, the hole shell is installed on the inner side of the frame to form an inner wall surface of the device, and noise penetrates through the small holes to enter the sound absorption wall.
The shell is a thin plate and is arranged on the outer wall surface of the frame to play roles in sound insulation, protection and decoration.
The sound absorption cotton is glass cotton or rock wool, and the main sound absorption structure of the device reduces the influence of noise
The silencing guide shoe is a sound absorption structure in the channel, is of a resistance characteristic, is arranged in the frame according to the resistance structure, and reduces noise in the ventilation process. Is the main noise reduction unit of the device.
The self-tapping screw is a standard part for fixing the silencing guide tile.
The silencing guide shoe consists of a guide plate, a rivet, a pore plate and sound absorption cotton. The guide plate is connected with the pore plate by rivets, and sound absorption cotton is filled in the middle. The thin plate without holes on the surface of the guide plate is made into a V shape, so that the wind resistance can be reduced when wind comes, and the guide plate can smoothly pass through. The thin plate with the small holes on the surface of the pore plate is manufactured into a V shape, and noise enters the sound absorption cotton structure through the small holes to reduce the noise.
Drawings
FIG. 1 is a partial cross-sectional view of a ventilation muffler assembly in accordance with the present invention;
FIG. 2 is a cross-sectional view A-A of a ventilation muffler assembly of the present invention;
FIG. 3 is a cross-sectional view of a ventilation muffler assembly B-B of the present invention;
FIG. 4 is a cross-sectional view of a ventilation muffler assembly C-C of the present invention;
fig. 5 is a sectional view of a silencing guide shoe of a ventilation silencing device of the present invention.
In the figure: 1-frame, 2-silencing guide tile, 3-self-tapping screw, 4-connecting pipe, 5-sound-absorbing cotton, 6-shell, 7-hole shell, 21-guide plate, 22-rivet and 23-hole plate.
Detailed Description
As shown in fig. 1 and 2, the ventilation opening of a room is 1.8 meters, the corresponding size of a ventilation noise-abatement device is 2x2x2 meters, and the ventilation noise-abatement device consists of a frame 1, a noise-abatement guide shoe 2, a self-tapping screw 3, a connecting pipe 4, sound-absorbing cotton 5, a shell 6 and a hole shell 7. The air inlet and outlet of the ventilation and noise elimination device are taken as the reference of the front and back direction, and the connecting pipes 4 are uniformly arranged and welded on the left side surface and the right side surface of the frame 1; the hole shell 7 is arranged inside the upper, lower, left and right surfaces of the frame 1; the shell 6 is arranged outside the upper, lower, left and right surfaces of the frame 1; sound absorption cotton 5 is filled between the hole shell 7 and the outer shell 6 to form a sound absorption wall; the silencing guide shoe 2 is arranged on the connecting pipe 4 on the left side and the right side by using self-tapping screws 3 according to the principle of matrix dislocation.
The frame is made into a square structure of 2x2x2 meters from a square tube 50x3 and is a supporting system of the device.
The connecting pipe material and the frame material are welded on the left side surface and the right side surface of the frame, and the distance between the connecting pipe material and the frame material is 400mm, so that the connecting pipe material and the frame material are uniformly arranged to install the silencing guide shoe.
The hole shell is a 1mm aluminum plate, small holes with the diameter of 3mm are uniformly distributed on the hole shell, the hole shell is installed on the inner side of the frame to form an inner wall surface of the device, and noise penetrates through the small holes to enter the sound absorption wall.
The shell is a 2mm aluminized zinc plate and is arranged on the outer wall surface of the frame to play roles in sound insulation, protection and decoration.
Cotton glass that volume weight of sound absorption cotton is 48kg/m is cotton, main sound-absorbing structure of device, influence that reduces the noise
The silencing guide shoe is a sound absorption structure in the channel, is integrally in a 120-degree V shape, has a resistance characteristic, is arranged in the frame according to the resistance structure, and reduces noise in the ventilation process. Is the main noise reduction unit of the device.
The self-tapping screw is a standard component of M5.5X80 and is used for fixing the silencing guide tile.
The silencing guide shoe consists of a guide plate, a rivet, a pore plate and sound absorption cotton. The guide plate is connected with the pore plate by rivets, and sound absorption cotton is filled in the middle. The guide plate surface nonporous 1mm aluminum plate is made into a V shape, so that the wind resistance can be reduced when wind comes, and the air can pass smoothly. A1 mm thick aluminum plate with a 3mm small hole in the surface of the pore plate is manufactured into a V shape, and noise enters the sound absorption cotton structure through the small hole to be reduced.
According to the direction of arranging the silencing guide shoe in the required environment, air needs to be fed from the outside into the room, but the noise in the room cannot influence the external environment, as shown in the following figure. When air enters from one end and passes through the ventilation silencing device, the silencing and flow guide outer guide plate faces the incoming air direction, and the wind resistance is reduced. And when the noise at the other end passes through the ventilation noise-abatement device in the opposite direction, the pore plate faces the noise direction, and the noise is reduced by utilizing the suction and separation principle.
Claims (3)
1. A ventilation silencing device is characterized by comprising a frame, a silencing guide shoe, a connecting pipe, sound absorption cotton, a shell and a hole shell; the connecting pipes are uniformly arranged and welded on the left side surface and the right side surface of the frame; the hole shells are arranged on the inner sides of the upper, lower, left and right surfaces of the frame; the shell is arranged on the outer sides of the upper, lower, left and right surfaces of the frame; sound absorption cotton is filled between the hole shell and the outer shell; the silencing guide shoe is arranged on the connecting pipe on the left side and the right side.
2. The ventilation silencer assembly of claim 1 wherein the silencing guide shoes are mounted to the left and right side connecting tubes in a matrix offset manner.
3. The ventilation and noise elimination device of claim 1, wherein the noise elimination guide shoe comprises a guide plate, a rivet, a hole plate and sound absorption cotton, the guide plate is connected with the hole plate by the rivet, the sound absorption cotton is filled in the middle of the guide plate, the thin plate with no holes on the surface of the guide plate is manufactured into a V shape, and the thin plate with holes on the surface of the hole plate is manufactured into a V shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220151086.8U CN216744874U (en) | 2022-01-20 | 2022-01-20 | Ventilation noise eliminator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220151086.8U CN216744874U (en) | 2022-01-20 | 2022-01-20 | Ventilation noise eliminator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216744874U true CN216744874U (en) | 2022-06-14 |
Family
ID=81913672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220151086.8U Active CN216744874U (en) | 2022-01-20 | 2022-01-20 | Ventilation noise eliminator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216744874U (en) |
-
2022
- 2022-01-20 CN CN202220151086.8U patent/CN216744874U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU704038B2 (en) | Sound attenuation assembly for air-cooling apparatus | |
| CN111649009A (en) | Composite noise eliminator for air inlet of high-speed centrifugal fan | |
| CN215215286U (en) | Ventilating duct silencer suitable for underground environment | |
| CN202835736U (en) | Plate type silencer with different thickness sound absorbing plates arranged at intervals | |
| CN216744874U (en) | Ventilation noise eliminator | |
| CN105185369A (en) | Sound attenuating system for low-noise integrated equipment cabinet used for communication | |
| CN207634397U (en) | Ventilation silencer | |
| CN201072305Y (en) | Ventilation silencer for natural-draft cooling tower | |
| CN201060642Y (en) | Combined silencer | |
| CN210658083U (en) | Transparent ventilation noise eliminator | |
| CN201582959U (en) | Ventilating muffler | |
| CN210830985U (en) | Rectangular array silencer for ventilation pipeline | |
| CN213454186U (en) | Wall-through silencer | |
| CN211082408U (en) | Microperforated panel combined type silencer | |
| CN212057713U (en) | Noise elimination device for ventilation structure of heating ventilation air conditioner | |
| CN104165450A (en) | Power recovery type tubular muffler | |
| CN210374015U (en) | Muffler assembly suitable for ventilation system | |
| CN113007143A (en) | Ultra-low noise silencer for air inlet end of fan | |
| CN110822547A (en) | Variable air volume end device with noise reduction function and air conditioning system | |
| CN2567385Y (en) | Pressure return type intake noise silencer | |
| CN2077028U (en) | Micro pinked plate dissipative muffler | |
| CN201738759U (en) | Beam-cavity resonance sound attenuation window | |
| CN212509000U (en) | Composite noise eliminator for air inlet of high-speed centrifugal fan | |
| CN110821545A (en) | Self-silencing axial flow fan ventilation system for tunnel | |
| CN213092809U (en) | Circular tube type impedance silencer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A ventilation and noise reduction device Effective date of registration: 20231220 Granted publication date: 20220614 Pledgee: Shanxi Bank Co.,Ltd. Jinzhong Branch Pledgor: Shangfeng Technology Co.,Ltd. Registration number: Y2023140000069 |