CN104265406A - Exhaust silencer for engineering machinery - Google Patents
Exhaust silencer for engineering machinery Download PDFInfo
- Publication number
- CN104265406A CN104265406A CN201410532602.1A CN201410532602A CN104265406A CN 104265406 A CN104265406 A CN 104265406A CN 201410532602 A CN201410532602 A CN 201410532602A CN 104265406 A CN104265406 A CN 104265406A
- Authority
- CN
- China
- Prior art keywords
- cavity
- intervalve
- diffusing tube
- pipe
- air inlet
- 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.)
- Pending
Links
Abstract
The invention discloses an exhaust silencer for engineering machinery. The exhaust silencer for the engineering machinery comprises a pipe body, clapboards, an air outlet diffusion pipe, an air inlet diffusion pipe, a short intermediate pipe and a long intermediate pipe, an end cover for sealing the pipe body is arranged at each of two ends of the pipe body, two clapboards are arranged in the pipe body to divide the pipe body into a first cavity, a second cavity and a third cavity, a screen plate parallel to the clapboard is arranged in the second cavity, the long intermediate pipe respectively runs through the two clapboards and the screen plate to communicate the first cavity with the third cavity, the short intermediate pipe respectively runs through the clapboard between the first cavity and the second cavity and the screen plate to communicate the first cavity with the second cavity, sound absorption material is filled between the clapboard between the first cavity and the second cavity and the screen plate, one ends of the air outlet diffusion pipe and air inlet diffusion pipe vertically run through the pipe body, and the other ends are closed by end caps. The exhaust silencer for the engineering machinery enables the whistling of an engine supercharger of the engineering machinery to be well eliminated through high frequency silencing by means of multiple steering and multiple vent holes.
Description
Technical field
The present invention relates to a kind of silencing apparatus, is a kind of engineering machinery exhaust silencer specifically.
Background technique
At present, existing engine exhaust muffler mainly adopts the resistance exhaust silencer structure of pipeline section expansion and cross-sectional constriction, utilize sound wave in the change of abrupt change of cross-section place due to acoustic reactance, some sound wave goes back to sound source reflects, and not by the outlet of silencing apparatus, thus reach the object of noise elimination.This resistance exhaust silencer centering, low-frequency silencing noise have certain effect.And for high frequency noise, due to the perforation pipeline section good to high frequency noise soundproof effect of employing and the negligible amounts of perforated plate, and the inner resistive sound-absorbing material that layout is not good to high frequency noise acoustically effective, it is undesirable to the soundproof effect of high frequency noise.
Summary of the invention
Object of the present invention provides a kind of impedance composite journey machinery exhaust silencer good at whole frequency range soundproof effect.
For achieving the above object, technological scheme of the present invention is: a kind of engineering machinery exhaust silencer, comprise body, dividing plate, to give vent to anger diffusing tube, air inlet diffusing tube, short intervalve, long intervalve, the end cap sealed by body is respectively arranged with at described body two ends, described tubular body is provided with two pieces of dividing plates and body is separated into the first cavity, second cavity and the 3rd cavity, the web plate parallel with dividing plate is provided with in described second cavity, described long intervalve runs through two pieces of dividing plates respectively and is communicated with the 3rd cavity by the first cavity with web plate, described short intervalve runs through dividing plate between the first cavity and the second cavity and web plate respectively, first cavity is communicated with the second cavity, sound-absorbing material is filled with between the dividing plate between described first cavity and the second cavity and web plate, described diffusing tube of giving vent to anger runs through body with one end of air inlet diffusing tube is vertical respectively, the other end is closed by plug respectively, and diffusing tube of giving vent to anger is positioned at the second cavity, air inlet diffusing tube is positioned at the 3rd cavity, described diffusing tube of giving vent to anger is communicated with the 3rd cavity with the second cavity respectively by the vent on its sidewall with air inlet diffusing tube, described short intervalve is communicated with sound-absorbing material respectively by the vent on its sidewall with long intervalve.
Owing to adopting technique scheme, the present invention by repeatedly to turn to and repeatedly vent to the noise elimination of high frequency, the engine supercharger whistle of engineering machinery is well eliminated, simultaneously by after making sound wave forward direction to the first cavity back reflection 180 degree, ripple is equal with wave-amplitude, and phase place is contrary, mutually interferes, eliminate low-frequency noise, thus achieve the object of eliminating the noise in whole frequency range.
Accompanying drawing explanation
Now the present invention will be further described by reference to the accompanying drawings.
Fig. 1 is structural representation of the present invention.
Fig. 2 is the sectional structure schematic diagram in A-A face of the present invention.
In figure: 1, body, 2, dividing plate, 3, diffusing tube of giving vent to anger, 4, air inlet diffusing tube, 5, short intervalve, 6, long intervalve, 7, end cap, the 8, first cavity, the 9, second cavity, the 10, the 3rd cavity, 11, web plate, 12, sound-absorbing material, 13, vent.
Embodiment
As shown in Figure 1, a kind of engineering machinery exhaust silencer of the present invention, comprise body 1, dividing plate 2, to give vent to anger diffusing tube 3, air inlet diffusing tube 4, short intervalve 5, long intervalve 6, the end cap 7 sealed by body 1 is respectively arranged with at body 1 two ends, body 1 inside is provided with two pieces of dividing plates 2 and body 1 is separated into the first cavity 8, second cavity 9 and the 3rd cavity 10, the web plate 11 parallel with dividing plate 2 is provided with in the second cavity 9, long intervalve 6 runs through two pieces of dividing plates 2 respectively and is communicated with the 3rd cavity 10 by the first cavity 8 with web plate 11, short intervalve 5 runs through dividing plate 2 between the first cavity 8 and the second chamber 9 body and web plate 11 respectively, first cavity 8 is communicated with the second cavity 9, sound-absorbing material 12 is filled with between the dividing plate 2 between the first cavity 8 and the second cavity 9 and web plate 11, diffusing tube 3 of giving vent to anger runs through body 1 with one end of air inlet diffusing tube 4 is vertical respectively, the other end is closed by plug respectively, and diffusing tube 3 of giving vent to anger is positioned at the second cavity 9, air inlet diffusing tube 4 is positioned at the 3rd cavity 10, diffusing tube 3 of giving vent to anger is communicated with the 3rd cavity 10 with the second cavity 9 respectively by the vent 13 on its sidewall with air inlet diffusing tube 4, short intervalve 5 is communicated with sound-absorbing material 12 respectively by the vent 13 on its sidewall with long intervalve 6.
Working principle of the present invention: from the noise of engine exhaust pipe through air inlet diffusing tube 4, on vent 13, enter the 3rd cavity 10, realize one-level expansion, eliminate the basic, normal, high audio-frequency noise of part, realize the transformation in noise direction simultaneously, and in the vibration friction of vent 13, eliminate part high-frequency noise; Noise enters the first cavity 8 at the 3rd cavity 10 by long intervalve 6, realizes second level expansion, eliminates the basic, normal, high audio-frequency noise of part, simultaneously due to the vibration friction of the vent 13 of noise on long intervalve 6, eliminates part high-frequency noise; Noise enters the second cavity 9 from the first cavity 8 through short intervalve 5 again, realize three grades of expansions, eliminate the basic, normal, high audio-frequency noise of part, simultaneously due to the transformation in noise direction, and the vibration friction of vent 13 on short intervalve 5, eliminate part high-frequency noise, the sound-absorbing material 12 in the second cavity 9 realizes eliminating part high-frequency noise, and the vent 13 of last noise on diffusing tube 3 of giving vent to anger is discharged.
The present invention maintains the effective advantage of resistance exhaust silencer centering, low frequency silencing noise, and air-flow is by repeatedly turning to and the noise elimination of repeatedly vent 13 pairs of high frequencies, and engine supercharger high-frequency noise is well eliminated.
Claims (1)
1. an engineering machinery exhaust silencer, comprise body, dividing plate, to give vent to anger diffusing tube, air inlet diffusing tube, short intervalve, long intervalve, it is characterized in that: be respectively arranged with the end cap sealed by body at described body two ends, described tubular body is provided with two pieces of dividing plates and body is separated into the first cavity, second cavity and the 3rd cavity, the web plate parallel with dividing plate is provided with in described second cavity, described long intervalve runs through two pieces of dividing plates respectively and is communicated with the 3rd cavity by the first cavity with web plate, described short intervalve runs through dividing plate between the first cavity and the second cavity and web plate respectively, first cavity is communicated with the second cavity, sound-absorbing material is filled with between the dividing plate between described first cavity and the second cavity and web plate, described diffusing tube of giving vent to anger runs through body with one end of air inlet diffusing tube is vertical respectively, the other end is closed by plug respectively, and diffusing tube of giving vent to anger is positioned at the second cavity, air inlet diffusing tube is positioned at the 3rd cavity, described diffusing tube of giving vent to anger is communicated with the 3rd cavity with the second cavity respectively by the vent on its sidewall with air inlet diffusing tube, described short intervalve is communicated with sound-absorbing material respectively by the vent on its sidewall with long intervalve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410532602.1A CN104265406A (en) | 2014-10-11 | 2014-10-11 | Exhaust silencer for engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410532602.1A CN104265406A (en) | 2014-10-11 | 2014-10-11 | Exhaust silencer for engineering machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104265406A true CN104265406A (en) | 2015-01-07 |
Family
ID=52156964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410532602.1A Pending CN104265406A (en) | 2014-10-11 | 2014-10-11 | Exhaust silencer for engineering machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104265406A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104594984A (en) * | 2015-01-29 | 2015-05-06 | 合肥汇凌汽车零部件有限公司 | Fire fighting silencer for forklift |
-
2014
- 2014-10-11 CN CN201410532602.1A patent/CN104265406A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104594984A (en) * | 2015-01-29 | 2015-05-06 | 合肥汇凌汽车零部件有限公司 | Fire fighting silencer for forklift |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204163804U (en) | Automobile exhaust pipe baffler | |
| CN104265409A (en) | High-frequency-removal exhaust silencer | |
| CN104265406A (en) | Exhaust silencer for engineering machinery | |
| CN201461033U (en) | Special air exhaust silencer for eliminating high-frequency whistle of engine | |
| CN204175386U (en) | A kind of engineering machinery exhaust silencer | |
| CN204436527U (en) | Minitruck muffler for internal combustion engine | |
| CN204175383U (en) | A kind of light-duty excavator silencing apparatus | |
| CN204175367U (en) | A kind of special exhaust silencer except high-frequency noise | |
| CN204175376U (en) | A kind of low back pressure impedance complex exhaust silencer | |
| CN204175369U (en) | A kind of impedance complex exhaust silencer | |
| CN104265408A (en) | Impedance compound muffler for power generating equipment | |
| CN104265411A (en) | Novel exhaust silencer special for removing high-frequency noise | |
| CN204175364U (en) | A kind of circular automobile exhaust gas Sound Attenuator | |
| CN204175378U (en) | A kind of silencing apparatus of the excavator low-frequency noise that disappears | |
| CN204175368U (en) | Power generating equipment impedance composite muffler | |
| CN104265414A (en) | Silencer with low frequency noise of silencing excavator | |
| CN204175379U (en) | The low back pressure impedance complex exhaust silencer of engineering truck | |
| CN203189078U (en) | Muffler for engineering machine | |
| CN204175372U (en) | The novel special exhaust silencer except high-frequency noise | |
| CN204175373U (en) | A kind of exhaust silencer except high frequency | |
| CN202578843U (en) | Exhaust silencer for engineering machinery | |
| CN204175371U (en) | A kind of special exhaust silencer except high-frequency noise | |
| CN104314642A (en) | Resonant exhausting silencer | |
| CN204175363U (en) | A kind of square automobile exhaust gas Sound Attenuator | |
| CN204175400U (en) | The special exhaust silencer of engineering machine vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150107 |
|
| WD01 | Invention patent application deemed withdrawn after publication |