CN87206711U - Muffler for induction manifold - Google Patents
Muffler for induction manifold Download PDFInfo
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- CN87206711U CN87206711U CN 87206711 CN87206711U CN87206711U CN 87206711 U CN87206711 U CN 87206711U CN 87206711 CN87206711 CN 87206711 CN 87206711 U CN87206711 U CN 87206711U CN 87206711 U CN87206711 U CN 87206711U
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Abstract
A muffler for an induction manifold of the utility model is composed of a top cover, a sound absorption cover with a sound absorption sleeve, a sound insulation plate with a sound absorption sheet, a sound muffling plate with a sound muffling sheet, an air current plate with a sound absorption sheet, a sound insulation cover with a sound absorption sleeve, an air inlet main pipe with a flange disk, etc. All the elements are the cylindrical shape and the plate shape. All the elements can be made of the thin steel plate or the plastics in injection moulding way. The utility model has the advantages of simple structure, small size, low cost, easy assembly and favorable sound muffling effect. The weight is only 1/10-1/20 of the traditional muffler, and the noise can be inhibited within the range of 65-72dB (A). The muffler is provided with the flange plate, which is convenient for disassembly.
Description
The utility model relates to the silencer of suction tude, and the air inlet person in charge etc. who promptly has the barney of sound-absorbing cover by overhead guard, the sound absorption cover that has sound absorption cover, the insulation board that has sound absorption plate, the muffler plate that has anechoic sheet, the airflow plate that has a sound-absorbing sheet and have a flange plate forms the silencer of suction tude of the present invention.
The noise suppression of numerous types that people understood or attenuating device, either large or small has played the noise elimination effect to the equipment that adopts silencer to some extent.Though obtaining remarkable progress in the art, this progress is usually hindered owing to the increase of this device size and its complexity, and this is because caused the increase of manufacture cost thus.In many such devices,,, therefore just caused the raising of manufacture cost to coordinate mutually with the special role of silencer because the original paper size must be selected appropriately.
People are expecting to have a kind of simple sound attenuation always, for example fill in for a kind of, and they not only have good noise suppression feature but also do not need expensive fabrication tool just can just can produce by various sizes with lower cost of production.In addition, people are also expecting to be issued to same or better noise suppression feature in littler profile overall dimensions.
Use the silencing apparatus of various different sound inhibition or attenuation part or original paper, have many types to be known by people.Yet slight change on the structural type of original paper will make same frequency produce different interference forms with sound waves of different frequencies.
U.S. Donaldson Co., Inc is in Patent Office of People's Republic of China (PRC) application " muffler and manufacture method " patent, application number is 85104467, though make fairly simplely, silencing equipment is more complicated, heaviness still, make and also compare difficulty, cost is still relatively more expensive.
The KKX of domestic production series silencing apparatus, weight is 106～662 kilograms, sale price minimum also more than 1,000 yuan.After loading onto the KKX-100 silencing apparatus on the TL-100 air compressor, approximately reduce by 8～12dB(A).
The object of the present invention is to provide a kind of device that is suitable for the suction tude of blower use, its main original paper is all cylindric and tabular, is all cylindric as overhead guard, sound absorption cover, sound-insulating cover and cylindrical body; Insulation board, muffler plate and airflow plate etc. are tabular.Its corresponding soundproof material also is cylindric and tabular.The original paper of this silencer is simple, and material is abundant, and assembling easily, manufacturing price is cheap, the cost of this silencing apparatus is 1/10～1/30 of a conventional muffler, and weight is 1/10～1/20, therefore, acoustic wave filter structure of the present invention is simple, volume is little, and the weight ratio conventional muffler reduces significantly, low cost of manufacture, and it is effective to eliminate the noise, and can suppress noise in 65～72dB(A) scopes.The air inlet of silencer is responsible for and is adopted flange plate to connect convenient disassembly.Therefore, silencer of the present invention has overcome the shortcoming of above-mentioned silencing apparatus, and substantial innovation is arranged.
Silencer of the present invention, the assembly program of its critical piece manufacture method and this device and the correlation division of structure are as follows:
Cylindrical body
Cylinder diameter is generally 200～400 millimeters, is 300～600 millimeters highly, presses the size sheet metal blanking of circumference and height, be rolled into cylindric and be welded into cylindrical body with plate bending rolls, the lower end circumferential section welds with sheet metal, and the circular hole of diameter of steel tube is stayed in the centre, promptly becomes cylindrical body.
Overhead guard
The overhead guard diameter is 300～500 millimeters, is 100～300 millimeters highly, presses the size sheet metal blanking of circumference and height, being washed into 2～4 row's diameters is 10～20 millimeters circular hole, the quantity of circular hole is decided according to the diameter that air inlet is responsible for, the area that its gross area is responsible for greater than air inlet; The sheet metal of hole punch is rolled into cylindric and is welded into cylinder with plate bending rolls, burn-ons and have the sheet metal that radius of arc is 250～700 millimeters circular arcs in its upper end, and the lower end circumferential section welds with sheet metal, and the circular hole of welding cylindrical body is left in the centre, promptly becomes overhead guard.
Sound absorption cover and sound-insulating cover
Sound absorption cover and sound-insulating cover diameter are generally 120～320 millimeters, the sound absorption cover highly is 100～250 millimeters, the sound-insulating cover height is 180～300 millimeters, press the sheet metal blanking of circumference and height size, raw sheet upper punch 2～4 row's diameters of sound-insulating cover are 15～30 millimeters circular hole, ready sheet metal parts are rolled into cylindric and are welded into cylinder with plate bending rolls, and sound absorption cover upper end is dead with the sheet metal weldering.
The caprone fiber of external application 7～17 millimeters thick or polyester foamed plastics or other sound-absorbing materials tumble in the sound absorption cover, available being stained with connects or is connected or additive method connects with bolt between sound-absorbing material and the steel plate, the sound absorption cover that installs sound-absorbing material is put in the overhead guard, make both concentric also lower ends on a horizontal plane, connect or riveted joint with welding or bolt, the sound absorption cover is fixed in the overhead guard.
The caprone fiber of external application 7～17 millimeters thick or polyester foamed plastics or other sound-absorbing materials tumble in the sound-insulating cover, available being stained with connects or is connected with bolt between sound-absorbing material and the steel plate, the sound-insulating cover that installs sound-absorbing material is put in the cylindrical body, made both with one heart and be welded on the steel plate of cylindrical body lower end.
The airflow plate diameter is consistent with the cylindrical body internal diameter and to be washed into diameter in the centre be 100～200 millimeters or be similar to the plum blossom hole that diameter is 100～200 millimeters areas, the diameter that the circumference inner end is washed into suitable quantity is 15～30 millimeters a aperture, be placed on sound-insulating cover upper end then and be welded on the cylindrical body, place above-mentioned sound-absorbing material above the airflow plate again and fix.35～150 millimeters places muffler plate of same diameter of burn-oning on airflow plate, be washed into diameter above the muffler plate and be 35～60 millimeters aperture, hole staggers on its position and the airflow plate, its gross area be less than hole on the airflow plate area or with insulation board on hole area approximate, place above-mentioned sound-absorbing material above the muffler plate again and fix; Be similar to above-mentioned dress method and place 1～3 acoustic board again, perhaps the burn-on insulation board of same diameter of 35～150 millimeters places on muffler plate is washed into 100～150 millimeters holes or is similar to the plum blossom hole that diameter is 100～150 millimeters areas in the middle of the insulation board.
After installing acoustic board and sound-insulating cover in the cylindrical body, the upper end welds together with the overhead guard lower end that installs the sound absorption cover, lower end and air inlet are responsible for and are welded together, and guarantee that each cylinder is concentric, air inlet is responsible for the lower end and is had flange plate, so that be connected with the equipment pipe that will adorn silencer, easy to loading and unloading, so just form silencer of the present invention.
Silencer of the present invention, its cylindric and tabular original paper is also available plastic injection-moulded.
The air inlet person in charge of silencer of the present invention is connected with flange plate with the suction tude of blower, when blower is worked, air enters in the overhead guard by the aperture on the overhead guard, utilize " aperture noise elimination " theory, make sound attenuation, air-flow by aperture, a part directly enters main expansion chamber from the cavity between sound absorption cover and the overhead guard, all the other air-flows are run into sound absorption cover and sound absorption cover, make noise decay again, enter main expansion chamber in the cylindrical body then, because the space in the sound absorption cover also is the part of main expansion chamber, enlarged the effective volume of main expansion chamber, to the noise attentuation better effects if; Hole in the middle of air communication after the expansion is crossed on the insulation board that has sound-absorbing material enters time expansion chamber, and pneumatic noise is through insulation board and the decay again of time expansion chamber; Aperture around air communication after the decay is crossed on the muffler plate that has sound-absorbing material enters the 3rd expansion chamber, and air-flow is through muffler plate, aperture and expansion chamber, and noise is decayed again; With above-mentioned principle, pneumatic noise also can be again through twice decay or air-flow directly by in the middle of the airflow plate that has sound-absorbing material with all around hole, enter the inside and outside pair main expansion chamber of sound-insulating cover that has sound-absorbing material, noise carries out a large amount of decay again like this, and the air-flow after the expansion is responsible for through air inlet and is flow in the blower.
Total figure of accompanying drawing 1 silencer.
The sectional view of accompanying drawing 2 silencer.
Silencer of the present invention further describes with accompanying drawing 1～2.
Overhead guard (1) diameter is 300～500 millimeters, highly be 100～300 millimeters, 's 10～20 millimeters circular hole (2) with sheet metal along circumference assembly 2～4 row diameters, be rolled into cylindric with plate bending rolls then and weld, the radius of arc of burn-oning on it is 250～700 millimeters a sheet metal, the lower end circumferential section welds with sheet metal, and the circular hole of welding cylindrical body (4) is left in the centre; Being welded into diameter with the sheet metal volume is 120～320 millimeters, it highly is 100～250 millimeters sound absorption cover (7), the upper end is dead with the sheet metal downhand welding, the caprone fiber or the polyester foamed plastics sound-absorbing material of external application 7～17 millimeters thick tumble in sound absorption cover (7) circumference, put into overhead guard (1) lining then, make both weld or be riveted on overhead guard (1) lining again in concentric also lower end on a horizontal plane, the parts of overhead guard (1) lining have just been got all the ready like this.Cylindrical body (4) is the critical piece of silencer, being welded into cylinder diameter with the sheet metal volume is 200～400 millimeters, highly be 300～600 millimeters, the lower end circumferential section welds with sheet metal, and the circular hole that (24) diameter is responsible in air inlet is left in the centre; Dashing 2～4 row's diameters with sheet metal along circumference is 15～30 millimeters circular hole (23), rolling up then and being welded into diameter is 120～320 millimeters, the sound-insulating cover (21) that height is 180～300 millimeters, caprone fiber or the polyester foamed plastics sound-absorbing material of external application 7～17 millimeters thick tumble in it, put into cylindrical body (4) lining then, make both concentric and welded together with cylindrical body lower end steel plate, airflow plate (17) diameter is consistent with cylindrical body (4) internal diameter, it is 100～200 millimeters macropores (19) that the centre is washed into diameter, it is 15～30 millimeters aperture (19) that the circumference inner end is washed into diameter, be placed on sound-insulating cover (21) upper end again and be welded on the cylindrical body (4), airflow plate tumbles in above-mentioned sound-absorbing material above (17); Burn-on same diameter and be washed into the muffler plate (13) that diameter is 35～60 millimeters apertures (14) of 35～150 millimeters places, airflow plate (17) top, aperture (14) position and airflow plate (17) are gone up aperture (19) and are staggered, and muffler plate tumbles in above-mentioned sound-absorbing material above (13); Burn-on in 35～150 millimeters places apart from muffler plate (13) top, and the centre of same diameter is washed into the insulation board (9) of 100～150 millimeters holes (10), tumbles in above-mentioned sound-absorbing material on it, and the parts of cylindrical body (4) lining have just installed like this.
Have the cylindrical shape sound absorption cover (7) of diameter less than cylindrical body (4) and upper end sealing is housed in the cylindrical overhead guard (1) of dome, sound absorption cover (7) is positioned on the same horizontal plane with the bottom of overhead guard (1), and it is concentric with overhead guard (1), sound absorption cover (7) sidewall is inside and outside with sound absorption cover (6), the bottom of overhead guard (1) has and the identical concentric circle holes of cylindrical body (4) diameter, this hole connects with cylindrical body (4), be spaced a distance from top to bottom in the cylindrical body (4) and be arranged in parallel successively, the upper-end surface is with the insulation board (9) of sound absorption plate (8), the upper-end surface has the airflow plate (17) of sound-absorbing sheet (16) with anechoic sheet (12) muffler plate (13) and upper-end surface, have hole (10) in the middle of sound absorption plate (8) and the insulation board (9), have aperture (14) around anechoic sheet (12) and the muffler plate (13), hole (10) staggers with the position of aperture (14), have macropore (18) in the middle of sound-absorbing sheet (16) and the airflow plate (17) and have aperture (19) on every side, aperture (14) staggers with the position of aperture (19), bottom cylindrical body (4), a diameter be housed less than cylindrical body (4) and with it concentric cylindrical shape sound-insulating cover (21) between the upper-end surface in airflow plate (17) lower end surface, sound-insulating cover (21) sidewall is inside and outside with sound-absorbing cover (20), have aperture (23) on sound-absorbing cover (20) and the sound-insulating cover (21), it is identical with suction tude (24) and in the concentric circular hole of cylindrical body (4) that cylindrical body (4) bottom has a diameter, this hole connects with the suction tude that has flange plate (25) (24), so just is assembled into silencer of the present invention.
It is that 10～20 millimeters aperture (2) enters in the overhead guard that air is gone up diameter by overhead guard (1), part air-flow enters main expansion chamber (5) the cylindrical body (4) from cavity (3), all the other air-flows are run into sound absorption cover (6) and sound absorption cover (7) laggard expansion chamber (5) of becoming owner of, and it is that 100～150 millimeters hole (10) enters inferior expansion chamber (11) that the soundboard (9) that the back air communication that expands is crossed the sound absorption plate (8) that has sound-absorbing material and make is gone up mid diameter; The aperture (14) that the air communication of inferior expansion chamber is crossed on the muffler plate (13) that has anechoic sheet (12) enters the 3rd expansion chamber (15); The air communication of the 3rd expansion chamber (15) crosses the last macropore (18) of the airflow plate (17) that has sound-absorbing sheet (16) and aperture (19) enters the inside and outside pair main expansion chamber (22) of sound-insulating cover (21) that has sound-absorbing cover (20), air-flow can pass through the hole (23) on the sound-insulating cover (21), is in the current stabilization state inside and outside making sound-insulating cover; Air-flow after the expansion flows to air inlet again and is responsible for (24) in flange plate (25) enters blower suction tude (26).
The silencing apparatus of air inlet pipe of the present invention, simple in structure, assembling is easily, volume is little, and weight is conventional muffler 1/10～1/20, and manufacturing cost is 1/10～1/30 of conventional muffler, and soundproof effect is good, can suppress noise in 65～72dB(A) scopes. Silencer is with ring flange. Can directly be connected convenient disassembly with the air blast air inlet pipe.
Claims (10)
1, a kind of silencer, it is characterized in that: a cylindrical overhead guard (1) that has dome is arranged, have 2～4 row's circular holes (2) on the sidewall of overhead guard (1), the cylindrical shape sound absorption cover (7) of one diameter less than cylindrical body (4) and upper end sealing is housed in the overhead guard (1), sound absorption cover (7) is positioned on the same horizontal plane with the bottom of overhead guard (1), and it is concentric with overhead guard (1), sound absorption cover (7) sidewall is inside and outside with sound absorption cover (6), the bottom of overhead guard (1) has and the identical concentric circle holes of cylindrical body (4) diameter, this hole connects with cylindrical body (4), be spaced a distance from top to bottom in the cylindrical body (4) and be arranged in parallel successively, the upper-end surface is with the insulation board (9) of sound absorption plate (8), the airflow plate (17) that the upper-end surface has sound-absorbing sheet (16) with the muffler plate (13) and the upper-end surface of anechoic sheet (12), have hole (10) in the middle of sound absorption plate (8) and the insulation board (9), have aperture (14) around anechoic sheet (12) and the muffler plate (13), hole (10) staggers with the position of aperture (14), have macropore (18) in the middle of sound-absorbing sheet (16) and the airflow plate (17) and have aperture (19) on every side, aperture (14) staggers with the position of aperture (19), bottom cylindrical body (4), a diameter be housed less than cylindrical body (4) and with it concentric cylindrical shape sound-insulating cover (21) between the upper-end surface in airflow plate (17) lower end surface, sound-insulating cover (21) sidewall is inside and outside with sound-absorbing cover (20), have aperture (23) on sound-absorbing cover (20) and the sound-insulating cover (21), cylindrical body (4) bottom have diameter identical with suction tude (24) and with the concentric circular hole of cylindrical body (4), this hole connects with the suction tude that has flange plate (25) (24), promptly forms the silencer of suction tude of the present invention.
2, according to the silencer of the described suction tude of claim 1, it is characterized in that overhead guard (1) diameter is 300～500 millimeters, the cylindrical portions may height is 100～300 millimeters, the cylinder upper end has the arc top cover of 250～700 millimeters of radius of arc.
3, according to the silencer of claim 1 or 2 described suction tude, it is 10～20 millimeters circular hole (2) that the cylindrical portions may that it is characterized in that overhead guard (1) is washed into diameter, and the quantity of circular hole (2) makes its gross area be responsible for the area of (24) greater than air inlet.
4, according to the silencer of the described suction tude of claim 1, it is characterized in that sound absorption cover (7) diameter is 120～320 millimeters, highly be 100～250 millimeters, the upper end blocks with the sheet metal weldering.
5,, it is characterized in that being washed into 100～150 millimeters holes (10), the also available plum blossom hole that equals 100～150 millimeters areas of Circularhole diameter in the middle of the insulation board (9) according to the silencer of the described suction tude of claim 1.
6, according to the silencer of the described suction tude of claim 1, it is 35～60 millimeters aperture (14) that the part that it is characterized in that keeping to the side on the muffler plate (13) is washed into diameter, and its gross area will equal hole (10) area of insulation board (9).
7, according to the silencer of the described suction tude of claim 1, it is characterized in that being washed in the middle of the airflow plate (17) diameter and be 100～200 millimeters macropore (18), also availablely equal the plum blossom hole that Circularhole diameter is 100～200 millimeters areas, it is 15～30 millimeters aperture (19) that the circumference inner end is washed into diameter.
8, according to the silencer of the described suction tude of claim 1, it is characterized in that sound-insulating cover (21) diameter is 120～320 millimeters, be 180～300 millimeters highly, be washed into diameter on it and be 15～30 millimeters circular hole (23).
9,, it is characterized in that sound absorption cover (6), sound absorption plate (8) according to the silencer of claim 1～2 or 4～8 described suction tude, anechoic sheet (12), sound-absorbing sheet (16), sound-absorbing cover (20) is all the caprone fiber of 7～17 millimeters thick, also available polyester foamed plastics sound-absorbing material.
10, according to the silencer of the described suction tude of claim 1～8, it is characterized in that overhead guard (1), sound absorption cover (7), insulation board (9), muffler plate (13), airflow plate (17), sound-insulating cover (21), cylindrical body (4), (24) are responsible in air inlet, the material of flange plate (25) also can be a sheet metal, also can be plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87206711 CN87206711U (en) | 1987-04-21 | 1987-04-21 | Muffler for induction manifold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87206711 CN87206711U (en) | 1987-04-21 | 1987-04-21 | Muffler for induction manifold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87206711U true CN87206711U (en) | 1988-06-08 |
Family
ID=4822235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87206711 Withdrawn CN87206711U (en) | 1987-04-21 | 1987-04-21 | Muffler for induction manifold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87206711U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104838194A (en) * | 2012-09-10 | 2015-08-12 | 德莱赛公司 | Noise attenuation device and fluid coupling comprised thereof |
| CN104916278A (en) * | 2015-06-01 | 2015-09-16 | 广东肇庆派瑞净化设备有限公司 | Silencer used for adsorption type drier |
| CN105465538A (en) * | 2016-01-06 | 2016-04-06 | 连云港博大机械设备制造有限公司 | Pipe blowing silencer |
-
1987
- 1987-04-21 CN CN 87206711 patent/CN87206711U/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104838194A (en) * | 2012-09-10 | 2015-08-12 | 德莱赛公司 | Noise attenuation device and fluid coupling comprised thereof |
| CN104916278A (en) * | 2015-06-01 | 2015-09-16 | 广东肇庆派瑞净化设备有限公司 | Silencer used for adsorption type drier |
| CN104916278B (en) * | 2015-06-01 | 2018-12-21 | 珠海华信净化设备有限公司 | A kind of silencer for absorption type dryer |
| CN105465538A (en) * | 2016-01-06 | 2016-04-06 | 连云港博大机械设备制造有限公司 | Pipe blowing silencer |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |