CN202578843U - Exhaust silencer for engineering machinery - Google Patents
Exhaust silencer for engineering machinery Download PDFInfo
- Publication number
- CN202578843U CN202578843U CN 201220229002 CN201220229002U CN202578843U CN 202578843 U CN202578843 U CN 202578843U CN 201220229002 CN201220229002 CN 201220229002 CN 201220229002 U CN201220229002 U CN 201220229002U CN 202578843 U CN202578843 U CN 202578843U
- Authority
- CN
- China
- Prior art keywords
- diaphragm
- end cover
- exhaust silencer
- rear end
- housing
- 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.)
- Expired - Fee Related
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- Exhaust Silencers (AREA)
Abstract
The utility model discloses an exhaust silencer for engineering machinery, and is characterized in that two ends of a shell body are respectively clamped with a front end cover and a rear end cover, a fist diaphragm and a second diaphragm space an inner cavity of the shell body, a flared tube is arranged on the upper portion of the first diaphragm, a middle tube is arranged between the first diaphragm and the lower portion of the second diaphragm, an air outlet sleeve tube with a mesh is arranged on the outer wall of the shell body between the second diaphragm and the rear end cover, and an air inlet is arranged on the outer wall of the shell body between the front end cover and the first diaphragm. Therefore, the exhaust silencer for the engineering machinery has the advantages of well eliminating noises of high frequency, median frequency and low frequency of a resistant exhaust silencer. Due to multiple turns of air flows and high frequency noise elimination of a plurality of air vents, the noises of an engine are well eliminated.
Description
Technical field
The utility model relates to a kind of engine exhaust muffler, particularly relates to a kind of engineering machinery and uses muffler for motor.
Background technique
Existing engine exhaust muffler; The main resistance exhaust silencer structure that adopts pipeline section expansion and cross-sectional constriction utilizes sound wave in the variation of abrupt change of cross-section place owing to acoustic reactance, and some sound wave reflects back to sound source; And the not outlet through silencing apparatus, thereby reach the purpose of noise elimination.This resistance exhaust silencer centering, low-frequency noise noise elimination effect are better.And to high-frequency noise noise elimination poor effect.
Summary of the invention
It is a kind of in whole frequency range that the purpose of the utility model is to provide, especially the effective impedance composite exhaust silencer of high band noise elimination.
To achieve these goals; The utility model is occluding with front cover and rear end cover respectively at the two ends of housing; Inboard at front cover and rear end cover is covered with sound-absorbing material respectively, and first dividing plate and second partition are provided with flared tube at the upside of first dividing plate with the inner chamber of housing at interval; Downside at first dividing plate and second partition is provided with intervalve; Said intervalve is that an end seals an end opening, on the outer wall of housing between second partition and the rear end cover, is provided with the gas bushing that of band mesh, and suction port is located on the outer wall of housing 1 between the front cover and first dividing plate.
Through above setting; The utility model utilizes multilayer perforation structure, flared tube structure and sound-absorbing material to form; Kept the resistance exhaust silencer to the high, medium and low frequency noise effective advantage of eliminating the noise, air communication cross repeatedly turn to and a plurality of vent to the noise elimination of high frequency, engine noise is well eliminated; In actual entrucking is used, obtained good effect.
Description of drawings
Combine accompanying drawing that the utility model is further specified at present.
Fig. 1 is the utility model structural representation.
Among the figure 1, housing, 2, front cover, 3, rear end cover, 4, sound-absorbing material, 5, first dividing plate; 6, second partition, 7, flared tube, 8, intervalve, 9, the band mesh, 10, go out gas bushing; 11, suction port, 12, first cavity, 13, second cavity, the 14, the 3rd cavity.
Embodiment
As shown in Figure 1; The utility model is occluding with front cover 2 and rear end cover 3 respectively at the two ends of housing 1; Be covered with sound-absorbing material 4, the first dividing plates 5 and second partition 6 respectively in the inboard of front cover 2 and rear end cover 3 at interval, be provided with flared tube 7 at the upside of first dividing plate 5 with the inner chamber of housing 1; Downside at first dividing plate 5 and second partition 6 is provided with intervalve 8; Said intervalve 8 is that an end seals an end opening, and what on the outer wall of housing 1 between second partition 6 and the rear end cover 3, be provided with band mesh 9 goes out gas bushing 10, and suction port 11 is located on the outer wall of housing 1 between the front cover 2 and first dividing plate 5.Through above setting, the waste gas warp that motor is discharged, suction port 11 gets into first cavity 12; The basic, normal, high audio-frequency noise of part is eliminated in the expansion of realization one-level, gets into second cavity 13 through flared tube 7 again; The basic, normal, high audio-frequency noise of part is eliminated in the expansion of realization secondary, is getting into the 3rd cavity 14 through intervalve 8; Realize three grades of expansions, eliminate the basic, normal, high audio-frequency noise of part, after sleeve pipe 10 discharges of giving vent to anger.
Claims (1)
1. an engineering machinery is used exhaust silencer; It is characterized in that: the two ends at housing are occluding with front cover and rear end cover respectively; Inboard at front cover and rear end cover is covered with sound-absorbing material respectively, and first dividing plate and second partition are provided with flared tube at the upside of first dividing plate with the inner chamber of housing at interval; Downside at first dividing plate and second partition is provided with intervalve; Said intervalve is that an end seals an end opening, on the outer wall of housing between second partition and the rear end cover, is provided with the gas bushing that of band mesh, and suction port is located on the outer wall of housing between the front cover and first dividing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220229002 CN202578843U (en) | 2012-05-21 | 2012-05-21 | Exhaust silencer for engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220229002 CN202578843U (en) | 2012-05-21 | 2012-05-21 | Exhaust silencer for engineering machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202578843U true CN202578843U (en) | 2012-12-05 |
Family
ID=47248263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220229002 Expired - Fee Related CN202578843U (en) | 2012-05-21 | 2012-05-21 | Exhaust silencer for engineering machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202578843U (en) |
-
2012
- 2012-05-21 CN CN 201220229002 patent/CN202578843U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20130521 |