CN203394612U - Low back pressure impedance composite exhaust silencer for engineering truck - Google Patents
Low back pressure impedance composite exhaust silencer for engineering truck Download PDFInfo
- Publication number
- CN203394612U CN203394612U CN201320362290.5U CN201320362290U CN203394612U CN 203394612 U CN203394612 U CN 203394612U CN 201320362290 U CN201320362290 U CN 201320362290U CN 203394612 U CN203394612 U CN 203394612U
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- CN
- China
- Prior art keywords
- diffusing tube
- exhaust silencer
- back pressure
- tube
- end cover
- 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 relates to an exhaust silencer, in particular to a low back pressure impedance composite exhaust silencer for an engineering truck. The low back pressure impedance composite exhaust silencer for the engineering truck comprises a shell, a front end cover, a sound insulation mesh, an outlet air diffusion tube and a rear end cover, wherein the left end of the shell is provided with the front end cover; the front end cover is provided with the sound insulation mesh; a screen board is arranged on the right side of the front end cover; the outlet air diffusion tube is arranged on the right side of the screen board; a middle tube is arranged on the right side of the outlet air diffusion tube. The exhaust silencer has the beneficial effects of simple structure, reliability in use, convenience in production and mounting and lower cost; the silencing effect of the silencer is improved and the back pressure of the silencer is reduced by fully utilizing the reduction in resistance of a flared tube and a perforated tube and the vibration friction sound absorbing effect of the perforated tube; the exhaust silencer has an excellent effect in silencer improvement projects of main engine plants.
Description
Technical field
The utility model relates to a kind of exhaust silencer, particularly low back pressure impedance complex exhaust silencer for a kind of engineering truck.
Background technique
At present, existing exhaust silencer 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, but the contradiction that this silencing apparatus exists is at present while using on engineering truck, because size is restricted, silencing apparatus diameter can not be too large, for obtaining larger divergence ratio, higher sound deadening capacity, outlet pipe and interpolation pipe diameter can not be too large, thereby cause airspeed high, muffler back pressure is high, and because airspeed is high, cause silencing apparatus soundproof effect also poor.
Model utility content
The utility model, in order to make up the defect of prior art, provides a kind of simple in structure, the convenient low back pressure impedance complex exhaust silencer for engineering truck using.
The utility model is achieved by the following technical solution:
Low back pressure impedance complex exhaust silencer for a kind of engineering truck, comprise housing, front cover, sound insulation net, give vent to anger diffusing tube and rear end cover, described housing left end is equipped with front cover, sound insulation net is housed on front cover, web plate is equipped with on front cover right side, the diffusing tube of giving vent to anger is equipped with on web plate right side, intervalve is equipped with on the diffusing tube right side of giving vent to anger, sound insulation net one is equipped with at upper and lower two ends, intervalve left side, sound insulation Wang Yi is equipped with front dividing plate in right side, rear bulkhead is equipped with at upper and lower two ends, intervalve right side, enlarging is housed on rear bulkhead, air inlet diffusing tube is equipped with on intervalve right side, in housing, plug is equipped with in air inlet diffusing tube end, housing right-hand member is equipped with rear end cover, the described diffusing tube of giving vent to anger, on intervalve and air inlet diffusing tube, there is vent.
Further, described in, giving vent to anger, diffusing tube and air inlet diffusing tube are straggly intersects installation.
The beneficial effects of the utility model are: simple in structure, use reliable, be convenient to produce and install, cost is lower, the utility model takes full advantage of the reduction of flared tube and perforated pipe resistance and the vibration friction noise elimination effect of perforated pipe, improve the soundproof effect of silencing apparatus, reduced the back pressure of silencing apparatus in the silencing apparatus improved project of main engine factory, obtained good effect.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further described.
Accompanying drawing is structural representation of the present utility model;
In figure, 1, front cover, 2, sound insulation net, 3, web plate, 4, the diffusing tube of giving vent to anger, 5, housing, 6, intervalve, 7, sound insulation net one, 8, front dividing plate, 9, rear bulkhead, 10, air inlet diffusing tube, 11, plug, 12, rear end cover, 13, vent, 14, enlarging.
Embodiment
Accompanying drawing is a kind of specific embodiment of the present utility model.Low back pressure impedance complex exhaust silencer for a kind of engineering truck of this model utility, comprise housing 5, front cover 1, sound insulation net 2, give vent to anger diffusing tube 4 and rear end cover 12, described housing 5 left ends are equipped with front cover 1, sound insulation net 2 is housed on front cover 1, web plate 3 is equipped with on front cover 1 right side, the diffusing tube 4 of giving vent to anger is equipped with on web plate 3 right sides, intervalve 6 is equipped with on diffusing tube 4 right sides of giving vent to anger, sound insulation net 1 is equipped with at intervalve 6 upper and lower two ends, left side, front dividing plate 8 is equipped with on sound insulation net one 7 right sides, rear bulkhead 9 is equipped with at intervalve 6 upper and lower two ends, right side, enlarging 14 is housed on rear bulkhead 9, air inlet diffusing tube 10 is equipped with on intervalve 6 right sides, plug 11 is equipped with in the interior air inlet diffusing tube of housing 5 10 ends, housing 5 right-hand members are equipped with rear end cover 12, the described diffusing tube 4 of giving vent to anger, on intervalve 6 and air inlet diffusing tube 10, vent 13 is housed, described give vent to anger diffusing tube 4 and air inlet diffusing tube 10 be straggly intersects installation.Low back pressure impedance complex exhaust silencer for a kind of engineering truck of this model utility, the noise that enters silencing apparatus from engine exhaust pipe during use enters the first chamber through air inlet diffusing tube 10, realize one-level expansion, eliminate partial noise, while is due to the vibration friction of the vent 13 on air inlet diffusing tube 10, eliminate part high-frequency noise, noise enters San chamber from the intervalve 6 of the first chamber band enlarging 14, when through the second chamber, dilating effect due to the vent 13 on intervalve 6, in the second chamber, realize secondary expansion, eliminate partial noise, while entering San chamber, realize three grades of expansions, eliminate partial noise, and in San chamber when the diffusing tube 4 of giving vent to anger is discharged silencing apparatus, vibration rubbing action due to the vent 13 on diffusing tube 4 of giving vent to anger, also have the sound absorption of sound insulation net 2 and sound insulation net 1 to eliminate part high-frequency noise, generation about resistance, air-flow is when entering San chamber through intervalve 6 from the first chamber, effect due to the enlarging 14 on intervalve 6, make air-flow retarded, thereby reduced part resistance, and suppressed regenerated noise, air-flow when discharging silencing apparatus from San chamber because diffusing tube 4 upper vent holes 13 of giving vent to anger also have the effect that slows down air-flow, thereby also reduced part resistance.
Claims (2)
1. a low back pressure impedance complex exhaust silencer for engineering truck, comprise housing (5), front cover (1), sound insulation net (2), give vent to anger diffusing tube (4) and rear end cover (12), it is characterized in that: housing (5) left end is equipped with front cover (1), sound insulation net (2) is housed on front cover (1), web plate (3) is equipped with on front cover (1) right side, the diffusing tube of giving vent to anger (4) is equipped with on web plate (3) right side, intervalve (6) is equipped with on diffusing tube (4) right side of giving vent to anger, sound insulation net one (7) is equipped with at upper and lower two ends, intervalve (6) left side, front dividing plate (8) is equipped with on sound insulation net one (7) right side, rear bulkhead (9) is equipped with at upper and lower two ends, intervalve (6) right side, enlarging (14) is housed on rear bulkhead (9), air inlet diffusing tube (10) is equipped with on intervalve (6) right side, plug (11) is equipped with in the interior air inlet diffusing tube of housing (5) (10) end, housing (5) right-hand member is equipped with rear end cover (12), the described diffusing tube of giving vent to anger (4), on intervalve (6) and air inlet diffusing tube (10), vent (13) is housed.
2. low back pressure impedance complex exhaust silencer for a kind of engineering truck according to claim 1, is characterized in that: the diffusing tube of giving vent to anger (4) and air inlet diffusing tube (10) be straggly intersects installation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320362290.5U CN203394612U (en) | 2013-06-24 | 2013-06-24 | Low back pressure impedance composite exhaust silencer for engineering truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320362290.5U CN203394612U (en) | 2013-06-24 | 2013-06-24 | Low back pressure impedance composite exhaust silencer for engineering truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203394612U true CN203394612U (en) | 2014-01-15 |
Family
ID=49906148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320362290.5U Expired - Fee Related CN203394612U (en) | 2013-06-24 | 2013-06-24 | Low back pressure impedance composite exhaust silencer for engineering truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203394612U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145385A (en) * | 2019-06-05 | 2019-08-20 | 湖北富亿农业机械制造有限公司 | A kind of engineering machine engine exhaust muffler |
-
2013
- 2013-06-24 CN CN201320362290.5U patent/CN203394612U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145385A (en) * | 2019-06-05 | 2019-08-20 | 湖北富亿农业机械制造有限公司 | A kind of engineering machine engine exhaust muffler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140115 Termination date: 20140624 |
|
| EXPY | Termination of patent right or utility model |