CN206726756U - A kind of Combined type muffler for being convenient for changing muffling unit - Google Patents

A kind of Combined type muffler for being convenient for changing muffling unit Download PDF

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Publication number
CN206726756U
CN206726756U CN201720234565.5U CN201720234565U CN206726756U CN 206726756 U CN206726756 U CN 206726756U CN 201720234565 U CN201720234565 U CN 201720234565U CN 206726756 U CN206726756 U CN 206726756U
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CN
China
Prior art keywords
end cap
muffling unit
noise elimination
silencing channel
convenient
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
CN201720234565.5U
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Chinese (zh)
Inventor
王东为
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.)
Xiamen University Tan Kah Kee College
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Xiamen University Tan Kah Kee College
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Publication date
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Priority to CN201720234565.5U priority Critical patent/CN206726756U/en
Application granted granted Critical
Publication of CN206726756U publication Critical patent/CN206726756U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

It the utility model is related to a kind of Combined type muffler for being convenient for changing muffling unit, including cylindrical silencer body, a noise elimination chamber run through is provided with the muffler body along its length, some muffling units are provided with the noise elimination cavity room side by side, the both ends of noise elimination chamber are bolted with air inlet end cap and outlet end cap respectively, an air admission hole connected with the silencing channel of muffling unit is offered in the middle part of the air inlet end cap, a venthole connected with the silencing channel of muffling unit is offered in the middle part of the outlet end cap.The acoustic wave filter structure is simple, is convenient to mount and dismount, and can adjust the quantity of muffling unit according to the frequency of noise source, puts in order to play good erasure effect, applicability is wide, service life is long, cost is low.

Description

A kind of Combined type muffler for being convenient for changing muffling unit
Technical field:
It the utility model is related to a kind of Combined type muffler for being convenient for changing muffling unit.
Background technology:
It is well known that for noise when reducing equipment work and reducing exhaust emission, generally pacify in the exhaust outlet of equipment Fill silencer.But all difference, the noise that eliminate distinct device are specific it is necessary to basis for the vibration noise frequency of every equipment Noise source frequency be adjusted.Existing silencer is mostly monolithic construction, and the muffling unit structure inside silencer is answered It is miscellaneous, it is not easy to change, erasure effect can not be adjusted according to the vibration noise frequency of equipment, using there is certain limitation.
Utility model content:
The purpose of this utility model is to be directed to above weak point, there is provided it is a kind of simple in construction, can be according to noise source Frequency adjusts the Combined type muffler for being convenient for changing muffling unit of noise reduction degree, and erasure effect is good, service life length.
To achieve these goals, the technical solution adopted in the utility model is:A kind of group for being convenient for changing muffling unit Box-like silencer, including cylindrical silencer body, a noise elimination run through is provided with along its length in the muffler body Chamber, some muffling units are provided with the noise elimination cavity room side by side, and the both ends of noise elimination chamber are bolted with air inlet end cap and gone out respectively Gas end cap, an air admission hole connected with the silencing channel of muffling unit, the outlet side are offered in the middle part of the air inlet end cap A venthole connected with the silencing channel of muffling unit is offered in the middle part of lid.
Further, some muffling units include at least one acoustic streaming formula set gradually along air admission hole to venthole Muffling unit, at least one labyrinth type muffling unit and at least one folded plate type muffling unit.
Further, the quantity of the acoustic streaming formula muffling unit is one, and acoustic streaming formula muffling unit includes first and eliminates the noise this Body, the first noise elimination body are provided with wavy first silencing channel connected with air admission hole along its axis direction;The fan The quantity of palace formula muffling unit is one, and labyrinth type silencing channel includes the second noise elimination body, the second noise elimination body along its Axis direction is provided with a silencing channel of labyrinth shape second connected with the first silencing channel;The quantity of the folded plate type muffling unit For two, folded plate type muffling unit includes the 3rd noise elimination body, and the 3rd noise elimination body is provided with one and the along its axis direction The silencing channel of fold-line-shaped the 3rd of two silencing channels connection, the 3rd silencing channel connect with air inlet aperture.
Further, the inwall of first silencing channel, the second silencing channel and the 3rd silencing channel is set respectively There is sound-absorbing material.
Further, the noise elimination chamber is in cylinder, the both ends of noise elimination chamber be respectively equipped with to air inlet end cap and The first internal thread and the second internal thread that outlet end cap is spirally connected, the inwall of silencer are equipped with glass fibre cotton.
Further, the air inlet end cap includes cylindrical first end cap body, the excircle of the first end cap body Face is provided with a flange connector, be evenly equipped with the flange connector it is some with profit connection screws, the one of the first end cap body End face is provided with the first connecting shaft, and the outer circumference surface of first connecting shaft is provided with the first outer spiral shell being used for the first screw-internal thread fit Line, the other end of the first end cap body are provided with a connecting portion to coordinate with equipment exhaust outlet, and the connecting portion is It is round table-like;Middle part of the air admission hole along the first connecting shaft, the first end cap body and connecting portion is run through.
Further, the outlet end cap includes cylindrical second end cap body, the end face of the second end cap body Provided with the second connecting shaft, the outer circumference surface of second connecting shaft is provided with to the second external screw thread with the second screw-internal thread fit.
Compared with prior art, the utility model has the following effects that:The utility model is simple in construction, is convenient to mount and dismount, can According to the frequency of noise source, adjust the quantity of muffling unit, put in order to play good erasure effect, applicability is wide, makes It is low with long lifespan, cost.
Brief description of the drawings:
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the structural representation of acoustic streaming formula muffling unit in the utility model embodiment;
Fig. 3 is the structural representation of labyrinth type muffling unit in the utility model embodiment;
Fig. 4 is the structural representation of folded plate type muffling unit in the utility model embodiment;
Fig. 5 is the structural representation of air inlet end cap in the utility model embodiment;
Fig. 6 is the structural representation of outlet end cap in the utility model embodiment;
Fig. 7 is the structural representation of muffler body in the utility model embodiment.
In figure:
1- muffler bodies;101- noise elimination chambers;The internal threads of 102- first;The internal threads of 103- second;2- air inlet end caps; 201- the first end cap bodies;202- flange connectors;203- through holes;The connecting shafts of 204- first;The external screw threads of 205- first;206- connections Portion;3- outlet end caps;301- the second end cap bodies;The connecting shafts of 302- second;The external screw threads of 303- second;4- acoustic streamings formula is eliminated the noise single Member;401- the first noise elimination bodies;The silencing channels of 402- first;5- labyrinth type muffling units;501- the second noise elimination bodies;502- Two silencing channels;6- folded plate type muffling units;The noise elimination bodies of 601- the 3rd;The silencing channels of 602- the 3rd;7- air admission holes;8- outlets Hole.
Embodiment:
The utility model is described in more detail with reference to the accompanying drawings and detailed description.
As shown in figs. 1-7, a kind of Combined type muffler for being convenient for changing muffling unit of the utility model, including cylinder disappear Sound device body 1, a noise elimination chamber 101 run through, the noise elimination chamber are provided with along its length in the muffler body 1 Some muffling units are provided with 101 side by side, the both ends of noise elimination chamber 101 are bolted with air inlet end cap 2 and outlet end cap 3, institute respectively The middle part for stating air inlet end cap 2 offers an air admission hole 7 connected with the silencing channel of muffling unit, in the outlet end cap 3 Portion offers a venthole 8 connected with the silencing channel of muffling unit;Acoustic streaming flows into along air admission hole 7, disappears successively by some The silencing channel of sound unit carries out noise reduction, and finally the acoustic streaming after noise reduction is handled flows out along venthole 8, realizes good noise reduction Effect.
In the present embodiment, some muffling units include at least one sound set gradually along air admission hole 7 to venthole 8 Streaming muffling unit 4, at least one labyrinth type muffling unit 5 and at least one folded plate type muffling unit 6;In actual production Cheng Zhong, putting in order between each muffling unit can be adjusted as needed, while it also can be selected present in prior art The muffling unit of his type.
In the present embodiment, the quantity of the acoustic streaming formula muffling unit 4 is one, and acoustic streaming formula muffling unit 4 disappears including first Sound body 401, the first noise elimination body 401 are provided with wavy first noise elimination connected with air admission hole 7 along its axis direction Passage 402;The quantity of the labyrinth type muffling unit 5 is one, and labyrinth type silencing channel 5 includes the second noise elimination body 501, institute State the second noise elimination body 501 and be provided with a silencing channel of labyrinth shape second connected with the first silencing channel 402 along its axis direction 502;The quantity of the folded plate type muffling unit 6 is two, and folded plate type muffling unit 6 includes the 3rd noise elimination body 601, described the Three noise elimination bodies 601 are provided with a silencing channel 602 of fold-line-shaped the 3rd connected with the second silencing channel 502 along its axis direction, 3rd silencing channel 602 connects with air inlet aperture 8;In actual use, can increase or decrease as needed each The quantity of muffling unit.
In the present embodiment, first silencing channel 402, the second silencing channel 502 and the 3rd silencing channel 602 it is interior Wall is respectively arranged with sound-absorbing material, to absorb acoustic wave energy, reaches soundproof effect;The deadener can be silencing cotton, foam Plastics etc..
In the present embodiment, by acoustic streaming formula muffling unit, labyrinth type muffling unit and folded plate type muffling unit these three Different types of muffling unit is arranged side by side, and sound wave first passes around the first silencing channel, and the first silencing channel is in wavy, can be made Air-flow is reduced by outflow, resistance, reaches high noise elimination, low resistance loss;Then sound wave passes through the second silencing channel, the second silencing channel For labyrinth shape, the flow velocity of sound wave can obviously reduce;Last sound wave is passing through the 3rd silencing channel, and the 3rd silencing channel is broken line Shape, order of reflection of the sound wave in passage can be increased, that is, increase the touch opportunity of sound wave and sound-absorbing material, improve acoustic attenuation performance, Improve sound deadening capacity.Labyrinth type muffling unit is located to the front end of folded plate type muffling unit, first to reduce the flow velocity of sound wave, avoided The too fast sound wave of flow velocity produces excessive vibration when the side wall with fold-line-shaped silencing channel contacts, and influences silencer and equipment Job stability.
In the present embodiment, in cylinder, the both ends of noise elimination chamber 101 are respectively equipped with to entering the noise elimination chamber 101 The first internal thread 102 and the second internal thread 103, the inwall of silencer that gas end cap 2 and outlet end cap 3 are spirally connected are equipped with glass fibers Vinylon and cotton blend, it can both be thermally shielded, and can further carries out sqouynd absorption lowering noise, improves erasure effect.
In the present embodiment, the air inlet end cap 2 includes cylindrical first end cap body 201, the first end cap body 201 Outer circumference surface be provided with a flange connector 202, be evenly equipped with the flange connector 202 it is some with profit connection screws 203, it is described The end face of first end cap body 201 is provided with the first connecting shaft 204, and the outer circumference surface of first connecting shaft 204, which is provided with, to be used for The first external screw thread 205 coordinated with the first internal thread 102, the other end of the first end cap body 201 be provided with one to The connecting portion is inserted into equipment during use to be round table-like by the connecting portion 206 that equipment exhaust outlet coordinates, the connecting portion 206 In exhaust outlet, prevent the acoustic streaming of noise source from revealing, influence erasure effect;The air admission hole 7 is along the first connecting shaft 204, first end The middle part of lid body 201 and connecting portion 206 is run through.
In the present embodiment, the outlet end cap 3 includes cylindrical second end cap body 301, the second end cap body 301 End face be provided with the second connecting shaft 302, the outer circumference surface of second connecting shaft 302 be provided with to the second internal thread 102 The second external screw thread 303 coordinated.
The foregoing is only preferred embodiment of the present utility model, it is all done according to present utility model application the scope of the claims it is equal Deng change and modification, it should all belong to covering scope of the present utility model.

Claims (7)

  1. A kind of 1. Combined type muffler for being convenient for changing muffling unit, it is characterised in that:It is described including cylindrical silencer body A noise elimination chamber run through is provided with muffler body along its length, is provided with some lists of eliminating the noise in the noise elimination cavity room side by side Member, the both ends of noise elimination chamber are bolted with air inlet end cap and outlet end cap, one are offered with disappearing in the middle part of the air inlet end cap respectively The air admission hole of the silencing channel connection of sound unit, one is offered in the middle part of the outlet end cap and is connected with the silencing channel of muffling unit Logical venthole.
  2. A kind of 2. Combined type muffler for being convenient for changing muffling unit according to claim 1, it is characterised in that:It is if described Dry muffling unit include set gradually along air admission hole to venthole at least one acoustic streaming formula muffling unit, at least one labyrinth type Muffling unit and at least one folded plate type muffling unit.
  3. A kind of 3. Combined type muffler for being convenient for changing muffling unit according to claim 2, it is characterised in that:The sound The quantity of streaming muffling unit is one, and acoustic streaming formula muffling unit includes the first noise elimination body, the first noise elimination body along its Axis direction is provided with wavy first silencing channel connected with air admission hole;The quantity of the labyrinth type muffling unit is one Individual, labyrinth type silencing channel includes the second noise elimination body, and the second noise elimination body disappears along its axis direction provided with one with first The silencing channel of labyrinth shape second of sound passage connection;The quantity of the folded plate type muffling unit is two, folded plate type muffling unit Including the 3rd noise elimination body, the 3rd noise elimination body is provided with a fold-line-shaped connected with the second silencing channel along its axis direction 3rd silencing channel, the 3rd silencing channel connect with air inlet aperture.
  4. A kind of 4. Combined type muffler for being convenient for changing muffling unit according to claim 3, it is characterised in that:Described The inwall of one silencing channel, the second silencing channel and the 3rd silencing channel is respectively arranged with sound-absorbing material.
  5. A kind of 5. Combined type muffler for being convenient for changing muffling unit according to claim 1, it is characterised in that:It is described to disappear For acoustic chamber in cylinder, the both ends of noise elimination chamber are respectively equipped with the first internal thread to be spirally connected with air inlet end cap and outlet end cap With the second internal thread, the inwall of silencer is equipped with glass fibre cotton.
  6. A kind of 6. Combined type muffler for being convenient for changing muffling unit according to claim 5, it is characterised in that:It is described enter Gas end cap includes cylindrical first end cap body, and the outer circumference surface of the first end cap body is provided with a flange connector, the company Connect and some screws with profit connection are evenly equipped with flange, the end face of the first end cap body is provided with the first connecting shaft, described The outer circumference surface of first connecting shaft, which is provided with, is used for the first external screw thread with the first screw-internal thread fit, the first end cap body it is another End face is provided with a connecting portion to coordinate with equipment exhaust outlet, and the connecting portion is round table-like;The air admission hole is along first The middle part of connecting shaft, the first end cap body and connecting portion is run through.
  7. A kind of 7. Combined type muffler for being convenient for changing muffling unit according to claim 5, it is characterised in that:It is described go out Gas end cap includes cylindrical second end cap body, and the end face of the second end cap body is provided with the second connecting shaft, and described second The outer circumference surface of connecting shaft is provided with to the second external screw thread with the second screw-internal thread fit.
CN201720234565.5U 2017-03-13 2017-03-13 A kind of Combined type muffler for being convenient for changing muffling unit Expired - Fee Related CN206726756U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720234565.5U CN206726756U (en) 2017-03-13 2017-03-13 A kind of Combined type muffler for being convenient for changing muffling unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720234565.5U CN206726756U (en) 2017-03-13 2017-03-13 A kind of Combined type muffler for being convenient for changing muffling unit

Publications (1)

Publication Number Publication Date
CN206726756U true CN206726756U (en) 2017-12-08

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Application Number Title Priority Date Filing Date
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108962210A (en) * 2018-07-12 2018-12-07 西南石油大学 A kind of Combined type muffler
CN109346050A (en) * 2018-09-17 2019-02-15 南京邮电大学 A kind of wide frequency acoustic absorber with folding space
CN109754775A (en) * 2017-11-03 2019-05-14 哈尔滨城林科技股份有限公司 A kind of noise elimination structure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109754775A (en) * 2017-11-03 2019-05-14 哈尔滨城林科技股份有限公司 A kind of noise elimination structure
CN108962210A (en) * 2018-07-12 2018-12-07 西南石油大学 A kind of Combined type muffler
CN109346050A (en) * 2018-09-17 2019-02-15 南京邮电大学 A kind of wide frequency acoustic absorber with folding space

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GR01 Patent grant
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: 20171208

Termination date: 20200313