CN204175376U - A kind of low back pressure impedance complex exhaust silencer - Google Patents

A kind of low back pressure impedance complex exhaust silencer Download PDF

Info

Publication number
CN204175376U
CN204175376U CN201420545965.4U CN201420545965U CN204175376U CN 204175376 U CN204175376 U CN 204175376U CN 201420545965 U CN201420545965 U CN 201420545965U CN 204175376 U CN204175376 U CN 204175376U
Authority
CN
China
Prior art keywords
dividing plate
diffusing tube
intervalve
partition
cap
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
Application number
CN201420545965.4U
Other languages
Chinese (zh)
Inventor
鞠焕鹏
张涛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZHUCHENG HAIDEWEI MACHINE CO Ltd
Original Assignee
ZHUCHENG HAIDEWEI MACHINE CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ZHUCHENG HAIDEWEI MACHINE CO Ltd filed Critical ZHUCHENG HAIDEWEI MACHINE CO Ltd
Priority to CN201420545965.4U priority Critical patent/CN204175376U/en
Application granted granted Critical
Publication of CN204175376U publication Critical patent/CN204175376U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model discloses a kind of low back pressure impedance complex exhaust silencer, it is characterized in that, end cap is occluding with respectively at the two ends of housing, web plate is respectively equipped with in the inner side of two end cap, sound-absorbing material is filled with between web plate and end cap, first dividing plate, second partition and the 3rd dividing plate are by the internal layout of housing, longitudinally diffusing tube of giving vent to anger is provided with in the outside of the first dividing plate, bottom between the first dividing plate and second partition is provided with two little intervalves side by side, top between second partition and the 3rd dividing plate is provided with large intervalve, air inlet diffusing tube is located at the outside of the 3rd dividing plate.By above setting, the utility model takes full advantage of the vibration friction noise elimination effect of diffusing tube of giving vent to anger, little intervalve, large intervalve and air inlet diffusing tube, improve the soundproof effect of silencing apparatus, the back pressure reducing silencing apparatus, in the silencing apparatus improved project of main engine factory, obtains good effect.

Description

A kind of low back pressure impedance complex exhaust silencer
Technical field
The utility model belongs to engine exhaust muffler field, particularly relates to a kind of low back pressure impedance complex exhaust silencer.
Background technique
At present, existing exhaust exhaust silencer mainly adopts the resistance exhaust silencer structure of pipeline section expansion and cross-sectional constriction, utilize sound wave in the change of abrupt change of cross-section place due to acoustic reactance, some sound wave goes back to sound source reflects, and not by the outlet of silencing apparatus, thus reach the object of noise elimination, but the contradiction that this silencing apparatus exists at present is when using on heavy-duty car, 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, thus cause airspeed high, muffler back pressure is high, and cause silencing apparatus soundproof effect also poor because airspeed is high.
Model utility content
The purpose of this utility model is to provide a kind of low back pressure impedance composite exhaust silencer utilizing flared tube and perforated pipe to reduce back pressure.
To achieve these goals, the utility model is occluding with end cap respectively at the two ends of housing, web plate is respectively equipped with in the inner side of two end cap, sound-absorbing material is filled with between web plate and end cap, first dividing plate, second partition and the 3rd dividing plate are by the internal layout of housing, longitudinally diffusing tube of giving vent to anger is provided with in the outside of the first dividing plate, bottom between the first dividing plate and second partition is provided with two little intervalves side by side, top between second partition and the 3rd dividing plate is provided with large intervalve, air inlet diffusing tube is located at the outside of the 3rd dividing plate, described diffusing tube of giving vent to anger, one end of large intervalve and air inlet diffusing tube is closed, at described diffusing tube of giving vent to anger, little intervalve, the outer wall of large intervalve and air inlet diffusing tube is respectively equipped with multiple expanded bore.
By above setting, the utility model takes full advantage of the vibration friction noise elimination effect of diffusing tube of giving vent to anger, little intervalve, large intervalve and air inlet diffusing tube, improve the soundproof effect of silencing apparatus, the back pressure reducing silencing apparatus, in the silencing apparatus improved project of main engine factory, obtains good effect.
Accompanying drawing explanation
Now be described further this use is novel by reference to the accompanying drawings.
Fig. 1 is this use new structure schematic diagram.
Fig. 2 is A-A sectional view.
In figure 1, housing, 2, end cap, 3, web plate, 4, sound-absorbing material, the 5, first dividing plate, 6, second partition, the 7, the 3rd dividing plate, 8, diffusing tube of giving vent to anger, 9, little intervalve, 10, large intervalve, 11, air inlet diffusing tube, 12, expanded bore, the 13, first cavity, the 14, second cavity.
Embodiment
As Fig. 1, shown in 2, the utility model is occluding with end cap 2 respectively at the two ends of housing 1, web plate 3 is respectively equipped with in the inner side of two end cap 2, sound-absorbing material 4 is filled with between web plate 3 and end cap 2, first dividing plate 5, second partition 6 and the 3rd dividing plate 7 are by the internal layout of housing 1, longitudinally diffusing tube 8 of giving vent to anger is provided with in the outside of the first dividing plate 5, bottom between the first dividing plate 5 and second partition 6 is provided with two little intervalves 9 side by side, top between second partition 6 and the 3rd dividing plate 7 is provided with large intervalve 10, air inlet diffusing tube 11 is located at the outside of the 3rd dividing plate 7, described diffusing tube 8 of giving vent to anger, one end of large intervalve and air inlet diffusing tube 11 is closed, at described diffusing tube 8 of giving vent to anger, little intervalve 9, the outer wall of large intervalve 10 and air inlet diffusing tube 11 is respectively equipped with multiple expanded bore 12.
By above setting, the noise of discharging from motor enters the first cavity 13 of the present utility model through air inlet diffusing tube 11, the vibration friction of the expanded bore on gas diffusing tube 11 and sound absorption, realize one-level expansion, eliminate part high-frequency noise, noise enters the second cavity 14 by large intervalve 10 again, the vibration friction of the expanded bore on large intervalve 10 and sound absorption, realize secondary expansion, remanent noise enters by little intervalve 9 diffusing tube 8 of giving vent to anger again, little intervalve 9 and the vibration friction of expanded bore of giving vent to anger on diffusing tube 8 and sound absorption, three grades of expansions are realized to noise, finally by giving vent to anger, diffusing tube 8 is discharged.

Claims (1)

1. one kind low back pressure impedance complex exhaust silencer, it is characterized in that: be occluding with end cap respectively at the two ends of housing, web plate is respectively equipped with in the inner side of two end cap, sound-absorbing material is filled with between web plate and end cap, first dividing plate, second partition and the 3rd dividing plate are by the internal layout of housing, longitudinally diffusing tube of giving vent to anger is provided with in the outside of the first dividing plate, bottom between the first dividing plate and second partition is provided with two little intervalves side by side, top between second partition and the 3rd dividing plate is provided with large intervalve, air inlet diffusing tube is located at the outside of the 3rd dividing plate, described diffusing tube of giving vent to anger, one end of large intervalve and air inlet diffusing tube is closed, at described diffusing tube of giving vent to anger, little intervalve, the outer wall of large intervalve and air inlet diffusing tube is respectively equipped with multiple expanded bore.
CN201420545965.4U 2014-09-22 2014-09-22 A kind of low back pressure impedance complex exhaust silencer Expired - Fee Related CN204175376U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420545965.4U CN204175376U (en) 2014-09-22 2014-09-22 A kind of low back pressure impedance complex exhaust silencer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420545965.4U CN204175376U (en) 2014-09-22 2014-09-22 A kind of low back pressure impedance complex exhaust silencer

Publications (1)

Publication Number Publication Date
CN204175376U true CN204175376U (en) 2015-02-25

Family

ID=52564193

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420545965.4U Expired - Fee Related CN204175376U (en) 2014-09-22 2014-09-22 A kind of low back pressure impedance complex exhaust silencer

Country Status (1)

Country Link
CN (1) CN204175376U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111492125A (en) * 2017-12-19 2020-08-04 本田技研工业株式会社 Muffler device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111492125A (en) * 2017-12-19 2020-08-04 本田技研工业株式会社 Muffler device

Similar Documents

Publication Publication Date Title
CN204163804U (en) Automobile exhaust pipe baffler
CN201461036U (en) Composite exhaust muffler with low backpressure impedance for heavy-duty truck
CN204175376U (en) A kind of low back pressure impedance complex exhaust silencer
CN204175381U (en) The special exhaust silencer of a kind of road roller
CN204175364U (en) A kind of circular automobile exhaust gas Sound Attenuator
CN204175383U (en) A kind of light-duty excavator silencing apparatus
CN204175367U (en) A kind of special exhaust silencer except high-frequency noise
CN201461035U (en) Impedance compound exhaust muffler used for tractor
CN204175379U (en) The low back pressure impedance complex exhaust silencer of engineering truck
CN205422881U (en) Resonant silencer
CN204175368U (en) Power generating equipment impedance composite muffler
CN204175386U (en) A kind of engineering machinery exhaust silencer
CN204175374U (en) A kind of resonance exhaust silencer
CN104234784A (en) Low-backpressure impedance compound exhaust silencer
CN204703984U (en) Impedance composite muffler
CN104234806A (en) Novel low-backpressure impedance composite exhaust silencer
CN204175382U (en) Power generating equipment impedance composite muffler
CN204175378U (en) A kind of silencing apparatus of the excavator low-frequency noise that disappears
CN203394612U (en) Low back pressure impedance composite exhaust silencer for engineering truck
CN204175399U (en) Novel low back pressure impedance complex exhaust silencer
CN104265406A (en) Exhaust silencer for engineering machinery
CN204175365U (en) A kind of special exhaust silencer eliminating low-frequency noise
CN203189078U (en) Muffler for engineering machine
CN104343498A (en) Special exhaust silencer for road roller
CN104314642A (en) Resonant exhausting silencer

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
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150225

Termination date: 20170922