CN203499771U - Diesel engine horizontal muffler - Google Patents
Diesel engine horizontal muffler Download PDFInfo
- Publication number
- CN203499771U CN203499771U CN201320498723.XU CN201320498723U CN203499771U CN 203499771 U CN203499771 U CN 203499771U CN 201320498723 U CN201320498723 U CN 201320498723U CN 203499771 U CN203499771 U CN 203499771U
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- diesel engine
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- expansion space
- hush pipe
- expansive space
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Abstract
A diesel engine horizontal muffler comprises a cylindrical anechoic chamber casing with two sealed ends, an air inlet and an air outlet, as well as two disc-shaped partition boards arranged in parallel at the middle part of the casing, wherein the casing is sequentially divided into a first expansion space, a resonance space and a second expansion space by the partition boards; the muffler further comprises at least two hush pipes penetrating the two partition boards at the same time; the two ends, positioned inside the first expansion space and the second expansion space, of each hush pipe are respectively provided with a plurality of small holes; the air inlet is arranged in the first expansion space; the air outlet is arranged in the second expansion space. The diesel engine horizontal muffler has the benefits that various technologies of micropore noise elimination, resistive noise elimination and reactive noise elimination are combined, the diesel engine horizontal muffler has the characteristics of excellent noise reduction effect, good universality, low cost, simple production process and the like, and can meet noise reduction requirements of agricultural high-power diesel engines.
Description
Technical field
The utility model relates generally to diesel engine field, and specifically a kind of Diesel Engine Exhaust Pipe mechanism afterwards that is connected to, has played and reduced the noise that diesel engine flows and produces because of exhaust airstream.Mainly be applicable to the noise reduction of agriculture dress class high-power (70kw ~ 110kw) diesel engine.
Background technique
The noise elimination mechanism of silencing apparatus has following several theory: resistance noise reduction, reactive muffling, impedance complex noise elimination, micro silencer and Active Noise Control.Because diesel engine work characteristic is different from petrol engine or other power plant, main manifestations is that power is strong, moment of torsion is large, exhaust particulate is many, arrange that warm row pressure is high, rough running etc., and frequency noise belongs to medium and low frequency band, so generally use reactive muffling.This model utility has increased micro silencer and two kinds of noise reduction modes of resistance noise reduction at agricultural equipment mechanical field, has improved to a certain extent the noise reduction of diesel engine.
Model utility content
The utility model object is in order to select a kind of novel noise elimination structure for meeting the noise reduction demand of agricultural high-power diesel engine, adopt the combination of micro silencer, resistance noise reduction, reactive muffling multiple technologies, become a kind of brand-new, better effects if, also the acoustic wave filter structure that is convenient to the Selecting Complete Set of most domestic agriculture dress class machinery, has the features such as noise reduction is good, versatility good, cost is low, preparation process is simple simultaneously.
The utility model is by the following technical programs: the horizontal silencing apparatus of a kind of diesel engine, the cylindrical anechoic chamber housing that comprises closed at both ends, suction port and relief opening, also comprise two parallel disc dividing plates of being located at housing middle part, described dividing plate is divided into the first expansive space successively by housing, sympathetic response space and the second expansive space, described silencing apparatus also comprises the hush pipe that simultaneously runs through two dividing plates, described hush pipe is at least two, the two ends that described hush pipe is positioned at the first expansive space and the second expansive space are respectively equipped with some apertures, described suction port is installed on the first expansive space, described relief opening is installed on the second expansive space.
As optimization: described hush pipe is four.
As optimization: described housing madial wall is provided with layer of glass silencing cotton.
The beneficial effects of the utility model: the utility model adopts the combination of micro silencer, resistance noise reduction, reactive muffling multiple technologies, there is the features such as noise reduction is good, versatility good, cost is low, preparation process is simple, meet the noise reduction demand of agricultural high-power diesel engine.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is A-A sectional drawing in Fig. 1.
In figure: 1, housing, 2, suction port, 3, relief opening, 4, dividing plate, the 5, first expansive space, 6, sympathetic response space, the 7, second expansive space, 8, hush pipe, 9, aperture, 10, glass fibre silencing cotton.
Embodiment
Embodiment 1: as Fig. 1, shown in 2, the horizontal silencing apparatus of a kind of diesel engine, the cylindrical anechoic chamber housing 1 that comprises closed at both ends, suction port 2 and relief opening 3, also comprise two parallel disc dividing plates 4 of being located at housing 1 middle part, described dividing plate 4 is divided into the first expansive space 5 successively by housing 1, sympathetic response space 6 and the second expansive space 7, described silencing apparatus also comprises the hush pipe 8 that simultaneously runs through two dividing plates 4, described hush pipe 8 is two, the two ends that described hush pipe 8 is positioned at the first expansive space 5 and the second expansive space 7 are respectively equipped with some apertures 9, described suction port 2 is installed on the first expansive space 5, described relief opening 3 is installed on the second expansive space 7, described housing 1 madial wall is provided with layer of glass silencing cotton 10.
Embodiment 2: on embodiment 1 basis, the above hush pipe 8 is four.
The simple working principle of the utility model: diesel exhaust gas enters the first expansive space 5, hush pipe 8, the second expansive space 7 successively from suction port, then drain into larynx resistance again to atmosphere from relief opening 3.From acoustic angle, expansive space and capacity can affect the effect effect of silencing apparatus, and the larger erasure effect of space and capacity is better, so the first expansive space 5 and the general design of the second expansive space 7 are spacious; On suction port 2 and hush pipe 8, be covered with many apertures 9, when air-flow passes through aperture 9, the frequency spectrum of exhaust noise will be shifted to high frequency and ultra-high frequency from medium and low frequency, can be heard as a minute obviously reduction; Sympathetic response space 6 is one can play the space that regulates set noise tonequality, and the larger tonequality in space is poorer, so this spatial design is relatively little, when air-flow flows in whole silencing apparatus, the glass fibre silencing cotton that noise can be attached to shell wall 1 absorbs.The noise heavy noise reduction of process and the absorption that finally because of air current flow, cause, reached usage requirement.
Claims (3)
1. the horizontal silencing apparatus of diesel engine, the cylindrical anechoic chamber housing that comprises closed at both ends, suction port and relief opening, it is characterized in that: also comprise two parallel disc dividing plates of being located at housing middle part, described dividing plate is divided into the first expansive space successively by housing, sympathetic response space and the second expansive space, described silencing apparatus also comprises the hush pipe that simultaneously runs through two dividing plates, described hush pipe is at least two, the two ends that described hush pipe is positioned at the first expansive space and the second expansive space are respectively equipped with some apertures, described suction port is installed on the first expansive space, described relief opening is installed on the second expansive space.
2. the horizontal silencing apparatus of a kind of diesel engine according to claim 1, is characterized in that: described hush pipe is four.
3. the horizontal silencing apparatus of a kind of diesel engine according to claim 1, is characterized in that: described housing madial wall is provided with layer of glass silencing cotton.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320498723.XU CN203499771U (en) | 2013-08-15 | 2013-08-15 | Diesel engine horizontal muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320498723.XU CN203499771U (en) | 2013-08-15 | 2013-08-15 | Diesel engine horizontal muffler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203499771U true CN203499771U (en) | 2014-03-26 |
Family
ID=50330760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320498723.XU Expired - Fee Related CN203499771U (en) | 2013-08-15 | 2013-08-15 | Diesel engine horizontal muffler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203499771U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111828130A (en) * | 2020-06-18 | 2020-10-27 | 威迩徕德电力设备(上海)有限公司 | Diesel engine tail gas silencer |
-
2013
- 2013-08-15 CN CN201320498723.XU patent/CN203499771U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111828130A (en) * | 2020-06-18 | 2020-10-27 | 威迩徕德电力设备(上海)有限公司 | Diesel engine tail gas silencer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140326 Termination date: 20140815 |
|
| EXPY | Termination of patent right or utility model |