CN2108180U - Small-size high-efficiency combination silencer - Google Patents
Small-size high-efficiency combination silencer Download PDFInfo
- Publication number
- CN2108180U CN2108180U CN 91210271 CN91210271U CN2108180U CN 2108180 U CN2108180 U CN 2108180U CN 91210271 CN91210271 CN 91210271 CN 91210271 U CN91210271 U CN 91210271U CN 2108180 U CN2108180 U CN 2108180U
- Authority
- CN
- China
- Prior art keywords
- sound
- silencer
- housing
- silencing apparatus
- connecting base
- 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.)
- Granted
Links
Images
Landscapes
- Exhaust Silencers (AREA)
Abstract
The utility model relates to the improvement of a silencer by which noise is attenuated simply by using sound-absorbing material in a pneumatic machine. The silencer comprises a connecting seat 1, a sound absorbing body 2, and a case body 3 which is connected with the connecting seat by screw threads. After compressed air enters into the silencer, firstly, the compressed air is expanded to be decompressed, then flows through the absorbing body for sound absorption, and lastly, is discharged out of the silencer from the exhaust vents on the side wall of a sound isolating cavity. The utility model has the advantages of good silencing effect, low manufacture cost and simple structure, and the sound absorbing material can be replaced at any time according to requirements.
Description
The utility model relates to utilizing the improvement of the silencing apparatus of sound-absorbing material noise attenuation in the pneumatic machinery merely.
As everyone knows; noise is a kind of social effects of pollution; therefore in various career fields such as a large amount of mechanical industries of using of pneumatic element, digging industry; in order to protect people's work, living environment; according to the pertinent regulations of labor safety protection, near should remove the hazardous noise source as far as possible and noise source, determine to allow limit.Various for this reason silencer arise at the historic moment, and they can be divided into expansion on the structure type, insert tubular type and absorption or the like, and the FXS series silencing apparatus such as state-run Weihai pneumatic element factory produces just belongs to a kind of absorption silencer.This silencing apparatus, simple structure has certain noise elimination effect, but owing to adopt Cu alloy material, price is higher, and sound absorbent exposes easily and stopped up by foreign material, and effect is not ideal enough.Chinese patent 88211703.3 also discloses a kind of " micropore exhaust silencer ", and its muffler body adopts particle polyethylene sintering to form, and has guard shield, can avoid foreign material to stop up, and price is also relatively cheap.But owing to also be to rely on the muffler body sound absorption merely, under the high situation of equipment exhaust sound, its noise elimination effect is also not ideal enough.
The purpose of this utility model is to guarantee that the silencing apparatus length dimension is no more than under the situation of known silencing apparatus, providing a kind of noise elimination level higher, and manufacture cost
The utility model is formed with the housing (3) that is threaded by connecting base (1), sound absorbent (2) with connecting base.The central column expansion chamber (7) that between connecting base (1) and sound absorbent (2), has a supplied gas expansion step-down to use; Between sound absorbent (2) and housing (3) bottom, an annular sound insulation chamber (5) is arranged; Housing (3) is gone up on the annular sidewall that forms the sound insulation chamber and is had exhaust port (6); For making sound absorbent (2) and housing (3) form the sound insulation chamber, specialized designs rack (8).In order to increase the area of contact of sound absorbent and exhausting air, sound absorbent can be made bowl-shape.In order to reach the compressed-air actuated flow path of lengthening and after by sound absorbent, to change airflow direction, further reduce exhaust velocity, except that sound absorbent should have the certain thickness requirement, the annular portion that housing forms the sound insulation chamber can also be made shape at the bottom of the kettle, and in the perforate of the side in sound insulation chamber.
Embodiment of the present utility model is with reference to accompanying drawing 1 and accompanying drawing 2.
Accompanying drawing 1 is a kind of embodiment's of the utility model a structure front view.Accompanying drawing 2 is the another kind of embodiment's of the utility model a structure front view.
In accompanying drawing 1, (1) is threaded connecting base, is made by machined piece, and (2) are sound absorbent, is made by flex foam, and (3) are made by cast aluminium alloy for be screwed in housing together with screw thread and connecting base, and (8) are rack.(5) be the sound insulation chamber, (6) are exhaust port, and (7) are expansion chamber.Expansion chamber (7) cross-section area increases 1-2 doubly than inducer flow area, housing (3) on sidewall the area of the pore that begins to rehearse (6) to be complementary with cross section of fluid channel.After pressurized air enters silencing apparatus,, and then, pass through exhaust port (6) exhaust silencer on the sidewall of sound insulation chamber at last through the sound absorbent sound absorption at first through the overexpansion step-down.
In accompanying drawing 2, part sequence number is identical with Fig. 1, and just connecting base (1) and disconnectable housing (3) all form with plastic injection-moulded, (2) be sound absorbent, make by rigid polyurethane foam plastics,, should be made into bowl-shape for the area of contact of increase with institute's exhaust body.For making full use of limited space, certain thickness flex foam (4) also is housed in the bottom of housing (3) carries out the secondary sound absorption.Test shows that the utility model is at length ≯ 100mm, and under exhaust pressure 0.3-0.6MPa condition, the noise elimination effect can reach more than the 23-25dB.
The utility model by taking full advantage of the confined space, has improved the noise elimination level in the littler situation of silencing apparatus length, when adopting injection molding, cost per unit approximately only needs 10 yuan, greatly reduces manufacturing cost. In a word, the utlity model has simple in structure, length short, effective, cost is low and sound-absorbing material can change etc. at any time multiple advantage.
Claims (4)
1, a kind of silencing apparatus of being made up of connecting base (1), sound absorbent (2) and the housing (3) that is threaded with connecting base (1) usefulness is characterized in that:
A, the expansion chamber (7) that constitutes between connecting base (1) and sound absorbent (2) be column ringwise
The sound insulation chamber (5) that constitutes between b, sound absorbent (2) and housing (3) bottom ringwise
C, housing (3) have exhaust port (6) on the annular sidewall in its formation sound insulation chamber (5)
D, rack (8) is set for making sound absorbent (2) and housing (3) form the sound insulation chamber.
2, silencing apparatus according to claim 1 is characterized in that annular portion that housing (3) forms sound insulation chamber (5) is shape at the bottom of the kettle.
3, silencing apparatus according to claim 2 is characterized in that: connecting base (1) and housing (3) can be by injection machine injection mouldings.
4, silencing apparatus according to claim 2 is characterized in that: bowl-shape sound absorbent is made by rigid polyurethane foam plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91210271 CN2108180U (en) | 1991-03-12 | 1991-03-12 | Small-size high-efficiency combination silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91210271 CN2108180U (en) | 1991-03-12 | 1991-03-12 | Small-size high-efficiency combination silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2108180U true CN2108180U (en) | 1992-06-24 |
Family
ID=4919090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91210271 Granted CN2108180U (en) | 1991-03-12 | 1991-03-12 | Small-size high-efficiency combination silencer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2108180U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101769588A (en) * | 2010-01-15 | 2010-07-07 | 汪祥 | Sound adsorbing device for ventilating system |
| CN102200110A (en) * | 2011-01-21 | 2011-09-28 | 佛山市广顺电器有限公司 | Sound reduction structure of air inlet piston |
-
1991
- 1991-03-12 CN CN 91210271 patent/CN2108180U/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101769588A (en) * | 2010-01-15 | 2010-07-07 | 汪祥 | Sound adsorbing device for ventilating system |
| CN102200110A (en) * | 2011-01-21 | 2011-09-28 | 佛山市广顺电器有限公司 | Sound reduction structure of air inlet piston |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107514350B (en) | Silencer and heat pump system | |
| DE59501549D1 (en) | PISTON COMPRESSOR FOR GASEOUS MEDIA | |
| CA2159634A1 (en) | Gas-Turbine Engine with Bearing Chambers and Barrier-Air Chambers | |
| CN2809234Y (en) | Exhaust muffler for diesel engine of railway passenger car with air conditioner | |
| CN204485604U (en) | A kind of muffler of absorption drier | |
| CN2108180U (en) | Small-size high-efficiency combination silencer | |
| CN205582478U (en) | Simple silencer | |
| CN86204649U (en) | Throttle muffler | |
| CN216198404U (en) | Low-noise environment-friendly silencer | |
| CN206017162U (en) | Reduce the noise-reducing structure of screw compressor gas | |
| CN210686223U (en) | Tubular silencer | |
| CN213454185U (en) | Noise reduction structure for air purifier and air purifier | |
| EP0934805A3 (en) | Sealed structure of outer wall for industrial robot | |
| CN211578365U (en) | Silencing device | |
| CN85201134U (en) | Air compressor exhaust unit with noise silencer | |
| DE3360449D1 (en) | Silencer for valve installations in compressed-air breaking systems | |
| CN211116482U (en) | Dampproofing shaving board air compressor | |
| CN209925307U (en) | Pipeline impedance silencing device | |
| CN221940143U (en) | Exhaust silencing structure of oxygenerator and oxygenerator | |
| CN212690467U (en) | Fan exhaust silencer for dedusting equipment of whole factory building | |
| CN205575635U (en) | Oxygen generator | |
| CN216077496U (en) | Silencing device applied to passenger car air conditioner and passenger car air conditioning system | |
| CN2091953U (en) | High-speed jet muffler | |
| CN2151261Y (en) | Muffling tower | |
| CN2243541Y (en) | Multi-pore expansion noise silencer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |