CN103696828A - High-frequency noise eliminating silencer for engineering vehicle - Google Patents
High-frequency noise eliminating silencer for engineering vehicle Download PDFInfo
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- CN103696828A CN103696828A CN201410002594.XA CN201410002594A CN103696828A CN 103696828 A CN103696828 A CN 103696828A CN 201410002594 A CN201410002594 A CN 201410002594A CN 103696828 A CN103696828 A CN 103696828A
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- China
- Prior art keywords
- frequency noise
- end closure
- end cap
- diffusion pipe
- vent holes
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Abstract
The invention relates to a device capable of realizing zero discharge of garbage wastewater for ecological cycle construction, and particularly relates to a high-frequency noise eliminating silencer for an engineering vehicle. The high-frequency noise eliminating silencer for the engineering vehicle comprises an end closure, a shell and an air suction diffusion pipe, wherein the end closure and a tail end closure are arranged at the two ends of the shell in a holding-on manner, the air suction diffusion pipe with multiple vent holes is arranged in the middles of an air inlet end, the end closure and a front clapboard, one end of the air suction diffusion pipe is open, the other end of the air suction diffusion pipe is closed by a drain plug, an inner insertion pipe with multiple vent holes is arranged between the front clapboard and a rear clapboard, a gas venting diffusion pipe with multiple vent holes is arranged in the middles of the rear clapboard and the tail end closure, and a sound absorption material is filled between the tail end closure and the rear clapboard. The high-frequency noise eliminating silencer has the beneficial effects that the high-frequency noise eliminating silencer has the advantage of a good noise elimination effect on low-frequency noise and high-frequency noise of a resistance exhaust silencer, the noise of an engine supercharger is eliminated very well through the multiple direction change of air currents and the high-frequency noise elimination of the vent holes, and a very good effect is achieved in a practical truck loading process.
Description
Technical field
The invention belongs to engine exhaust muffler, particularly relate to a kind of engineering truck of multilayer perforation structure composition that utilizes with removing high-frequency noise silencing apparatus.
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 variation due to acoustic reactance in abrupt change of cross-section place, some sound wave reflects back to sound source, and not by the outlet of silencing apparatus, thereby reach the object of noise elimination.This resistance exhaust silencer centering, low-frequency silencing noise effect are better.And for high frequency noise, due to adopt to the good perforation pipeline section of high frequency noise soundproof effect and the negligible amounts of perforated plate, and the inner not layout resistive sound-absorbing material good to high frequency noise acoustically effective, it is undesirable to the soundproof effect of high frequency noise.
Summary of the invention
The object of the present invention is to provide a kind of engineering truck that especially high band soundproof effect is good in whole frequency range with removing high-frequency noise silencing apparatus.
Technological scheme of the present invention is:
A kind of engineering truck is with removing high-frequency noise silencing apparatus, comprise end cap, housing and air inlet diffusing tube, describedly at housing two ends, be occluding with end cap and end cap, at inlet end, in the middle of end cap and front dividing plate, be provided with the air inlet diffusing tube with a plurality of vents, one section of opening of air inlet diffusing tube, the other end is sealed by plug, between front dividing plate and rear bulkhead, be provided with the interpolation pipe with a plurality of vents, in the middle of rear bulkhead and end cap, be provided with the diffusing tube of giving vent to anger with a plurality of vents, between end cap and rear bulkhead, fill up sound-absorbing material.
Further, described front dividing plate is provided with a plurality of little vents.
Further, between described after otter board and end cap, be provided with sound absorbing material.
The invention has the beneficial effects as follows: the present invention has kept resistance exhaust silencer centering, the effective advantage of low frequency silencing noise, and air-flow is by repeatedly turning to and the repeatedly noise elimination of vent to high frequency, engine supercharger whistle is well eliminated, in actual entrucking is used, obtained good effect.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Accompanying drawing 1 is structural representation of the present invention;
Fig. 2 is A-A sectional view;
Fig. 3 is B-B sectional view.
In figure, 1 end cap, 2 housings, 3 air inlet diffusing tubes, 4 front dividing plates, 5 intervalves, 6 rear bulkheads, 7 sound absorbing materials, 8 front web plates, 9 after otter boards, 10 sound-absorbing materials, 11 end cap, 12 diffusing tubes of giving vent to anger, 13 plugs.
Embodiment
Accompanying drawing 1-3 is a kind of specific embodiment of the present invention.This invents a kind of engineering truck with removing high-frequency noise silencing apparatus, described two end caps 1 and the end 11 of being occluding with at housing 2 two ends, at inlet end, in the middle of end cap 1 and front dividing plate 4, be provided with the air inlet diffusing tube 3 with a plurality of vents, 3 one sections of openings of air inlet diffusing tube, the other end is sealed by plug 13, air inlet diffusing tube 3 is provided with a plurality of little vents, between front dividing plate 4 and rear bulkhead 6, be provided with the intervalve 5 with a plurality of vents, between rear bulkhead 6 and front web plate 8, fill up sound-absorbing material 7, between rear bulkhead 6 and end cap 11, be provided with the diffusing tube 12 of giving vent to anger with a plurality of vents, between after otter board 9 and end cap 11, be provided with sound absorbing material 10.
Further, described front dividing plate 4 is provided with a plurality of little vents.
Further, between described after otter board 9 and end cap 11, be provided with sound absorbing material 7.
A kind of engineering truck of the present invention is with removing high-frequency noise silencing apparatus, the noise that enters silencing apparatus from engine exhaust pipe during use is through air inlet diffusing tube 3, iris action through plug 13, by the vent on air inlet diffusing tube 3, enter the first cavity, realize one-level expansion, elimination part is low, in, high-frequency noise, the simultaneously transformation of noise direction and in the vibration friction of little vent, eliminate part high-frequency noise, noise is when entering the second chamber from the first chamber by the vent intervalve 5, realize second level expansion, elimination part is low, in, high-frequency noise, while is due to the vibration friction of the vent of noise on intervalve 5, eliminate part high-frequency noise, noise from the second chamber when intervalve 5 enters the 3rd chamber, realize three grades of expansions, elimination part is low, in, high-frequency noise, while is due to the vibration friction of the transformation of noise direction and the little vent annex on intervalve 5, eliminate part high-frequency noise, sound absorbing material 7 in the 3rd chamber and sound-absorbing material 10 are realized and are eliminated part high-frequency noise, when the little vent of noise on the diffusing tube 12 of giving vent to anger discharged silencing apparatus, due to noise turn to and little vent near friction, eliminate again part high-frequency noise.
The present invention has kept resistance exhaust silencer centering, the effective advantage of low frequency silencing noise, and air-flow by repeatedly turning to, repeatedly vent and the noise elimination of sound-absorbing material to high frequency, engine supercharger high-frequency noise is well eliminated, in actual entrucking is used, obtained good effect.
The present invention is not limited to above-mentioned mode of execution, anyone should learn under enlightenment of the present invention, make there is identical or close technological scheme with the present invention, within all falling into protection scope of the present invention.
The technology that the present invention does not describe in detail, shape, structure are partly known technology.
Claims (3)
1. an engineering truck is with removing high-frequency noise silencing apparatus, comprise end cap, housing and air inlet diffusing tube, it is characterized in that: describedly at housing two ends, be occluding with end cap and end cap, at inlet end, in the middle of end cap and front dividing plate, be provided with the air inlet diffusing tube with a plurality of vents, one section of opening of air inlet diffusing tube, the other end is sealed by plug, between front dividing plate and rear bulkhead, be provided with the interpolation pipe with a plurality of vents, in the middle of rear bulkhead and end cap, be provided with the diffusing tube of giving vent to anger with a plurality of vents, between end cap and rear bulkhead, fill up sound-absorbing material.
2. a kind of engineering truck according to claim 1, with except high-frequency noise silencing apparatus, is characterized in that: described front dividing plate is provided with a plurality of little vents.
3. a kind of engineering truck according to claim 1, with except high-frequency noise silencing apparatus, is characterized in that: between described after otter board and end cap, be provided with sound absorbing material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410002594.XA CN103696828A (en) | 2014-01-04 | 2014-01-04 | High-frequency noise eliminating silencer for engineering vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410002594.XA CN103696828A (en) | 2014-01-04 | 2014-01-04 | High-frequency noise eliminating silencer for engineering vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103696828A true CN103696828A (en) | 2014-04-02 |
Family
ID=50358471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410002594.XA Pending CN103696828A (en) | 2014-01-04 | 2014-01-04 | High-frequency noise eliminating silencer for engineering vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103696828A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112610301A (en) * | 2020-12-16 | 2021-04-06 | 雷沃工程机械集团有限公司 | Exhaust silencer for non-road mobile machinery and non-road mobile machinery |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3732948A (en) * | 1971-09-20 | 1973-05-15 | Nat Southwire Aluminum | Muffler for aluminum cell tapping crucible |
| US3776364A (en) * | 1972-04-28 | 1973-12-04 | Donaldson Co Inc | Noise reduction apparatus and method |
| CN201891468U (en) * | 2010-11-17 | 2011-07-06 | 郑州精益达汽车零部件有限公司 | Automobile impedance composite muffler with inner heat insulation |
| CN202348377U (en) * | 2011-10-29 | 2012-07-25 | 无锡开普机械有限公司 | Multi-cavity labyrinth silencer |
| CN203189078U (en) * | 2013-03-28 | 2013-09-11 | 诸城市海得威机械有限公司 | Muffler for engineering machine |
-
2014
- 2014-01-04 CN CN201410002594.XA patent/CN103696828A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3732948A (en) * | 1971-09-20 | 1973-05-15 | Nat Southwire Aluminum | Muffler for aluminum cell tapping crucible |
| US3776364A (en) * | 1972-04-28 | 1973-12-04 | Donaldson Co Inc | Noise reduction apparatus and method |
| CN201891468U (en) * | 2010-11-17 | 2011-07-06 | 郑州精益达汽车零部件有限公司 | Automobile impedance composite muffler with inner heat insulation |
| CN202348377U (en) * | 2011-10-29 | 2012-07-25 | 无锡开普机械有限公司 | Multi-cavity labyrinth silencer |
| CN203189078U (en) * | 2013-03-28 | 2013-09-11 | 诸城市海得威机械有限公司 | Muffler for engineering machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112610301A (en) * | 2020-12-16 | 2021-04-06 | 雷沃工程机械集团有限公司 | Exhaust silencer for non-road mobile machinery and non-road mobile machinery |
| CN112610301B (en) * | 2020-12-16 | 2022-04-01 | 雷沃工程机械集团有限公司 | Exhaust silencer for non-road mobile machinery and non-road mobile machinery |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140402 |