CN2243541Y - Multi-pore expansion noise silencer - Google Patents
Multi-pore expansion noise silencer Download PDFInfo
- Publication number
- CN2243541Y CN2243541Y CN 95221554 CN95221554U CN2243541Y CN 2243541 Y CN2243541 Y CN 2243541Y CN 95221554 CN95221554 CN 95221554 CN 95221554 U CN95221554 U CN 95221554U CN 2243541 Y CN2243541 Y CN 2243541Y
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- model
- utility
- muffling
- porous
- housing
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- Expired - Fee Related
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Abstract
The utility model relates to a porous diffusion muffler which is used for muffling the noise of a pneumatic machine. The utility model is characterized in that the muffling element is installed on the inner side wall of a casing, a metal net is installed on the inner side wall of the muffling element, and a filtering cloth is arranged between the muffling element and the metal net. The side wall of the casing is porous, and the casing is connected by screws. After the compressed air gets into the utility model, the expansion and depressurization of the compressed air is realized firstly; next, the sound absorption of the compressed air is realized by the muffling element; last, the compressed air is exhausted from the utility model by making use of the exhaust vent of the side wall of the casing. The utility model has the advantages of good muffling effect, simple structure, good mechanical property and good corrosion-resisting property. The muffling element of the utility model can be changed at any moment as required.
Description
The utility model relates to a kind of silencing apparatus of pneumatic machinery, specifically a kind of porous diffusor.
At present, the kind of silencing apparatus is a lot, as Chinese patent CN2108180U, discloses a kind of efficient composite silencing apparatus.It relates to utilizing the improvement of the silencing apparatus of sound-absorbing material noise attenuation in the pneumatic machinery merely, and this kind baffler is by connecting base, and sound absorbent and the housing that is threaded with connecting base usefulness are formed.After pressurized air enters silencing apparatus, at first through the overexpansion step-down, then through the sound absorbent sound absorption.This kind silencing apparatus erasure effect is undesirable, and complex structure is made shortcomings such as inconvenience.
It is a kind of simple in structure that the purpose of this utility model is to provide, and good muffling effect has favorable mechanical performance and decay resistance, and can reduce the porous diffusor that relief opening produces strong wide band jet noise.
The purpose of this utility model realizes by following means.
A kind of porous diffusor comprises housing and silencer element, it is characterized in that on the madial wall of housing silencer element being installed, and on the madial wall of silencer element wire netting is installed, and is being served as a contrast filter cloth between silencer element and wire netting.This porous diffusor is according to micropore jet noise elimination Design Theory.The sidewall of housing is a porous, and two kinds of mode of connection are arranged; It can adopt connecting base and bush whorl ways of connecting to form, and forms in the mode that can adopt connecting body to be threaded with end cap.Housing adopts the ABS material, and silencer element is various sound-absorbing materials, and filter cloth is a nonwovens etc.
The utility model provides a kind of porous diffusor, owing on the housing madial wall silencer element is installed, housing sidewall is a porous, helps the diffusion of eliminating the noise, good muffling effect.On the madial wall of silencer element wire netting is installed, is being served as a contrast filter cloth between wire netting and the silencer element, can prevent that the impurity in the discharged air from stopping up the hole of silencer element, influence the noise elimination effect, and have favorable mechanical performance and decay resistance, and simple in structure, make easily.When exhaust emptying, produce strong wide band jet noise at relief opening, this porous diffusor can reduce this aerodynamic noise, net sectional area 20～700mm effectively
2, flow 840～28600NL/min, noise elimination effect 〉=30[dB (A)].
The utlity model has following accompanying drawing.
Fig. 1 is the structural drawing of porous diffusor.
Fig. 2 is the structural drawing of housing of the present utility model.
Fig. 3 is the structural drawing of housing of the present utility model.
Below in conjunction with accompanying drawing the utility model is described in detail.
Embodiment 1.
A kind of porous diffusor, as shown in Figure 1.
Housing 1 is made up of connecting base 5 and the sleeve 6 that is threaded with connecting base 5.Silencer element 2 is installed on the madial wall of housing 1, wire netting 3 is installed on the madial wall of silencer element, and between silencer element 2 and wire netting 3, is being served as a contrast filter cloth 4.Silencer element 2 adopts the PE sintered material, can change at any time as required, also can adopt other sound absorbing material.After pressurized air enters silencing apparatus, at first through the overexpansion step-down, then through silencer element 2 sound absorptions, after the exhaust port on the sidewall of housing 1 is discharged silencing apparatus.
Different with embodiment 1 housings 1 that are are made up of end cap 7 and the connecting body 8 that is threaded with end cap 7, and its structure is by shown in Figure 2.
Claims (4)
1. porous diffusor, comprise housing (1) and silencer element (2), it is characterized in that on the madial wall of housing (1), installing silencer element (2), wire netting (3) is installed on the madial wall of silencer element (2), and between silencer element (2) and wire netting (3), is being served as a contrast filter cloth (4).
2. porous diffusor as claimed in claim 1 is characterized in that on the sidewall of housing (1) be porous.
3. porous diffusor as claimed in claim 1 is characterized in that housing (1) is made up of connecting base (5) and the sleeve (6) that is threaded with connecting base (5).
4. porous diffusor as claimed in claim 1 is characterized in that housing (1) also can be made up of end cap (7) and the connecting body (8) that is threaded with end cap (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95221554 CN2243541Y (en) | 1995-09-14 | 1995-09-14 | Multi-pore expansion noise silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95221554 CN2243541Y (en) | 1995-09-14 | 1995-09-14 | Multi-pore expansion noise silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2243541Y true CN2243541Y (en) | 1996-12-25 |
Family
ID=33869140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95221554 Expired - Fee Related CN2243541Y (en) | 1995-09-14 | 1995-09-14 | Multi-pore expansion noise silencer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2243541Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100460247C (en) * | 2004-09-30 | 2009-02-11 | 霓佳斯株式会社 | Enclosures |
| CN105423051A (en) * | 2015-12-11 | 2016-03-23 | 哈尔滨工程大学 | Device for inhibiting pipe wall vibration and pipe orifice eddy currents in ejection of water filling pipe |
| CN115719590A (en) * | 2022-10-31 | 2023-02-28 | 宁波亚德客自动化工业有限公司 | Pipe plug type silencer |
-
1995
- 1995-09-14 CN CN 95221554 patent/CN2243541Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100460247C (en) * | 2004-09-30 | 2009-02-11 | 霓佳斯株式会社 | Enclosures |
| CN105423051A (en) * | 2015-12-11 | 2016-03-23 | 哈尔滨工程大学 | Device for inhibiting pipe wall vibration and pipe orifice eddy currents in ejection of water filling pipe |
| CN105423051B (en) * | 2015-12-11 | 2017-06-20 | 哈尔滨工程大学 | A kind of device of tube wall vibration and the mouth of pipe vortex during suppression water-filled pipe jet |
| CN115719590A (en) * | 2022-10-31 | 2023-02-28 | 宁波亚德客自动化工业有限公司 | Pipe plug type silencer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |