CN101769189A - Smoke-removing muffler for agricultural automobile - Google Patents
Smoke-removing muffler for agricultural automobile Download PDFInfo
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- CN101769189A CN101769189A CN200910013905A CN200910013905A CN101769189A CN 101769189 A CN101769189 A CN 101769189A CN 200910013905 A CN200910013905 A CN 200910013905A CN 200910013905 A CN200910013905 A CN 200910013905A CN 101769189 A CN101769189 A CN 101769189A
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- smoke
- muffler
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- muffling
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- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
The invention provides a smoke-removing muffler for an agriculture automobile (including a tractor, a tricycle and a light truck), which belongs to the technical field of automobile engineering and consists of a smoke-removing (smoke-filtering) part and a muffling part. The muffling part comprises an impedance compound muffler which is composed of a reactive muffler and a dissipative muffler and has excellent muffling effect for high, middle or low frequency noise, wherein the reactive muffler adopts the structure of a perforated pipe, an intubation tube, a micro perforated plate and a perforated plate, utilizes the abrupt change of cross section of a pipeline or a by-pass resonant cavity to lead the sound wave of certain frequency to carry out sound wave reflection and interference on the cross section with abrupt change of acoustic impedance and lead the energy loss of the sound wave, thereby achieving the purpose of muffling; and the dissipative muffler achieves the purpose of muffling by means of sound-absorbing material which is arranged on the tube wall and has high-temperature resistance and good sound-absorbing effect, and the dissipative muffler has the advantages of high-temperature resistance, strong heat resistance, corrosion resistance, excellent penetrating property, high capability of absorbing impact energy, low cost and simple fabrication process. The smoke-removing (smoke-filtering) part selects a wire mesh or wire cotton as smoke-filtering material, is arranged at the rear end of the whole muffler and has the effects of impact resistance, interception and soot particles absorbing. The smoke-removing muffler is applicable to the smoke-removing muffler with integrated smoke-removing (smoke-filtering) and muffling for the agricultural automobile, has double functions of smoke-removing (smoke-filtering) and muffling, has compact structure, low cost and convenient maintenance and is applicable to production requirements of farmers.
Description
Technical field
The present invention relates to the clean cigarette silencing apparatus of agricultural automobile (comprising tractor, tricycle, light truck etc.), particularly be applicable to the silencing apparatus of clean cigarette (filter cigarette) of agricultural automobile (comprising tractor, tricycle, light truck etc.) and noise elimination one, belong to the Vehicle Engineering technical field.
Background technique
That the used small diesel engine of agricultural automobile (comprising tractor, tricycle, light truck etc.) has is simple in structure, low cost of manufacture, easy to use, be fit to technical merit and the lower characteristics of purchasing power that use in the vast rural area of China, thereby extensively be employed.But its noise height, pulsating nature are strong, ear-piercing, the sound poor quality, have a strong impact on people's physical and mental health, hinder people's proper functioning and rest.She Ji silencing apparatus mostly was to adopt the resistance exhaust silencer in the past, and centering, low-frequency noise effect are better, and bad to the high-frequency noise effect.But agricultural automobile exhaust high-frequency noise is also very serious, and is very big to mankind harm, often ignored by people, so we adopt new-type impedance complex formula exhaust silencer, can in the exhaust, low, the high-frequency noise effect is all good.For the used small diesel engine of agricultural automobile,, add that people neither pay attention to very much simultaneously, so soot is many in its discharging because the burning tissue is good not as other vehicle.The effulent that agricultural automobile is main---carbon soot particles (PM), granule density is big, and granularity is little, is as easy as rolling off a logly adsorbed by the people and causes breathing problem and cause cancer.And agricultural automobile does not also adopt the outer clean cigarette measure of machine at present, has only adopted better simply exhaust silencer, thereby can cause great pollution to environment.
Summary of the invention
Development is fit to the clean efficiently cigarette (filter cigarette) of agricultural automobile (comprising tractor, tricycle, light truck etc.) and the integrated clean cigarette silencing apparatus of eliminating the noise, the dual functions that makes it have clean cigarette (filter cigarette) and eliminate the noise, while claimed structure compactness, with low cost, easy to maintenance, to satisfy peasant's production needs.
The present invention is achieved by the following technical solutions:
The present invention is the clean cigarette silencing apparatus of agricultural automobile (comprising tractor, tricycle, light truck etc.), and it comprises clean cigarette (filter cigarette) and noise elimination two-part.Muffling part is formed impedance complex formula silencing apparatus by reactive muffler and dissipative muffler, and high, medium and low frequency noise is all had good noise elimination effect.Wherein reactive muffler adopts perforated pipe, interpolation pipe, microperforated panel, perforated plate structure, utilize cross-section of pipeline sudden change or side to connect resonant cavity, make the sound wave of some frequency phenomenons such as acoustic reflection, interference take place in the cross section of acoustic impedance sudden change, cause the energy loss of sound wave, thereby reach the noise elimination purpose; Dissipative muffler reaches the purpose of noise elimination by means of the sound-absorbing material effect on the tube wall of being contained in, we select for use the effective material of high-temperature resistant sound absorption as sound-absorbing material, it have high temperature resistant, heat resistance is strong, anticorrosive, through performance is good, the ability of very high absorption impact energy, cheap, advantage such as manufacturing process is simple are arranged.Clean cigarette (filter cigarette) part selects for use wire gaze or metal silk flosssilk wadding etc. to be filter cigarette material, places the rear end of whole silencing apparatus, and it has the effect of shock resistance, interception and absorption carbon soot particles.
The present invention is fit to the clean cigarette (filter cigarette) of agricultural automobile (comprising tractor, tricycle, light truck etc.) and the incorporate clean cigarette silencing apparatus of eliminating the noise, the dual functions that has clean cigarette (filter cigarette) and eliminate the noise.Require clean cigarette acoustic wave filter structure compactness simultaneously, cost is low, and is easy to maintenance, is fit to peasant's production needs.
Description of drawings
Figure one is a schematic representation of the present invention:
Wherein, 1-tailpipe, 2-tailpipe end-plate, the clean cigarette of 3-(filter cigarette) material, 4-microperforated panel, 5-sound-absorbing material, separate perforated pipe, 7-microperforated panel, 8-demarcation strip in the 6-sound-absorbing material, 9-interpolation pipe (two), 10-perforated pipe, 11-outer wall, 12-exhaust inlet end shrouding, 13-flange, 14-first expansion chamber, 15-second expansion chamber, 16-the 3rd expansion chamber.
Specific embodiment
The noise that exhaust produces in the accompanying drawing enters with the perforated pipe 10 of air-flow from the right side, expand in first expansion chamber 14 on the right and eliminate the noise, enter two interpolation pipes 9 then and shrink noise elimination, enter second expansion chamber 15 through interpolation pipe 9 again, expansion is again eliminated the noise, and then air-flow shrinks noise elimination through microperforated panel 7, enter the 3rd expansion chamber 16, expand again and eliminate the noise, the 3rd expansion chamber 16 absorbs a part of noise by sound-absorbing material 5 simultaneously, shrinks through microperforated panel 4 air-flows and eliminates the noise, and enters clean cigarette (filter cigarette) chamber of afterbody, by clean cigarette (filter cigarette) material 3 interception carbon soot particles, after the tailpipe 1 of clean cigarette silencing apparatus enters atmosphere.
Claims (2)
1. one kind is suitable for the clean efficiently cigarette (filter cigarette) of agricultural automobile (comprising tractor, tricycle, light truck etc.) and the integrated clean cigarette silencing apparatus of eliminating the noise, make its dual functions that has clean cigarette (filter cigarette) and eliminate the noise, compact structure, with low cost, easy to maintenance, to satisfy peasant's production needs.
2. according to claim 1 described clean cigarette silencing apparatus, it is characterized in that: it comprises clean cigarette (filter cigarette) and noise elimination two-part.Muffling part is formed impedance complex formula silencing apparatus by reactive muffler and dissipative muffler, adopts structures such as perforated pipe, interpolation pipe, microperforated panel, perforated plate, selects the effective sound-absorbing material of high-temperature resistant sound absorption for use.Clean cigarette (filter cigarette) part selects for use wire gaze or metal silk flosssilk wadding etc. to be filter cigarette material, places the rear end of whole silencing apparatus, and it has the effect of shock resistance, interception and absorption carbon soot particles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910013905A CN101769189A (en) | 2009-01-07 | 2009-01-07 | Smoke-removing muffler for agricultural automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910013905A CN101769189A (en) | 2009-01-07 | 2009-01-07 | Smoke-removing muffler for agricultural automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101769189A true CN101769189A (en) | 2010-07-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910013905A Pending CN101769189A (en) | 2009-01-07 | 2009-01-07 | Smoke-removing muffler for agricultural automobile |
Country Status (1)
| Country | Link |
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| CN (1) | CN101769189A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101892886A (en) * | 2010-07-23 | 2010-11-24 | 丹阳市长江汽车部件有限公司 | Silencing exhaust device for high-power engine |
| CN102536391A (en) * | 2012-01-06 | 2012-07-04 | 宁波大学 | Purification device for diesel engine exhaust |
| CN102829581A (en) * | 2011-06-15 | 2012-12-19 | 江森自控空调冷冻设备(无锡)有限公司 | Gas flow-splitting/converging device with noise eliminating function used for compressor unit refrigerating system |
| CN105927314A (en) * | 2016-06-01 | 2016-09-07 | 芜湖卓越空调零部件有限公司 | Double-layer perforated impedance compound type silencer |
| CN106782485A (en) * | 2016-11-18 | 2017-05-31 | 宁德市银通发电设备有限公司 | A kind of impedance composite muffler |
| US20170342893A1 (en) * | 2013-03-15 | 2017-11-30 | Kohler Co. | Noise suppression systems |
-
2009
- 2009-01-07 CN CN200910013905A patent/CN101769189A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101892886A (en) * | 2010-07-23 | 2010-11-24 | 丹阳市长江汽车部件有限公司 | Silencing exhaust device for high-power engine |
| CN101892886B (en) * | 2010-07-23 | 2012-07-04 | 丹阳市长江汽车部件有限公司 | Silencing exhaust device for high-power engine |
| CN102829581A (en) * | 2011-06-15 | 2012-12-19 | 江森自控空调冷冻设备(无锡)有限公司 | Gas flow-splitting/converging device with noise eliminating function used for compressor unit refrigerating system |
| CN102829581B (en) * | 2011-06-15 | 2015-11-25 | 江森自控空调冷冻设备(无锡)有限公司 | For the gas distribution/junction station of the band noise elimination function of compressor bank refrigeration system |
| CN102536391A (en) * | 2012-01-06 | 2012-07-04 | 宁波大学 | Purification device for diesel engine exhaust |
| CN102536391B (en) * | 2012-01-06 | 2014-01-29 | 宁波大学 | Purification device for diesel engine exhaust |
| US20170342893A1 (en) * | 2013-03-15 | 2017-11-30 | Kohler Co. | Noise suppression systems |
| US10077707B2 (en) * | 2013-03-15 | 2018-09-18 | Kohler Co. | Noise suppression systems |
| US10557402B2 (en) | 2013-03-15 | 2020-02-11 | Kohler Co. | Noise suppression systems |
| CN105927314A (en) * | 2016-06-01 | 2016-09-07 | 芜湖卓越空调零部件有限公司 | Double-layer perforated impedance compound type silencer |
| CN106782485A (en) * | 2016-11-18 | 2017-05-31 | 宁德市银通发电设备有限公司 | A kind of impedance composite muffler |
| CN106782485B (en) * | 2016-11-18 | 2021-04-20 | 宁德市银通发电设备有限公司 | Impedance composite muffler |
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Application publication date: 20100707 |