CN204163805U - A kind of diesel engine silencer of exempting from stretching anechoic chamber structure - Google Patents
A kind of diesel engine silencer of exempting from stretching anechoic chamber structure Download PDFInfo
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- CN204163805U CN204163805U CN201420057543.2U CN201420057543U CN204163805U CN 204163805 U CN204163805 U CN 204163805U CN 201420057543 U CN201420057543 U CN 201420057543U CN 204163805 U CN204163805 U CN 204163805U
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- reducing pipe
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- 230000030279 gene silencing Effects 0.000 claims abstract description 32
- 239000011148 porous material Substances 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 15
- 238000002360 preparation method Methods 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 238000003466 welding Methods 0.000 description 4
- 230000008030 elimination Effects 0.000 description 3
- 238000003379 elimination reaction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 238000003032 molecular docking Methods 0.000 description 2
- 238000009966 trimming Methods 0.000 description 2
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- 230000007613 environmental effect Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
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- Exhaust Silencers (AREA)
Abstract
A kind of diesel engine silencer of exempting from stretching anechoic chamber structure, comprise suction tude, exempt from stretching sound attenuation, silencing board, elementary noise reducing pipe, terminal noise reducing pipe and anti-scalding shield, exempt from stretching sound attenuation and comprise section bar body, left end cap and right end cap, left end cap and right end cap seal the two ends being fixed on section bar body respectively, silencing board is arranged on exempts from stretching sound attenuation, silencing board is provided with bloop, and be separated into exempting from stretching sound attenuation the silencing cavity comprising elementary noise reduction cavity and terminal noise reduction cavity, elementary noise reduction cavity and elementary noise reducing pipe interlink, terminal noise reduction cavity and terminal noise reducing pipe interlink, outlet and the air of terminal noise reducing pipe interlink, suction tude is interlinked by elementary noise reducing pipe and elementary noise reduction cavity, anti-scalding shield be fixed on exempt from stretching sound attenuation outer end on, its structure is simple, preparation process is good, cost of production is low, antivibration anti crack performance is good, anti-acoustic capability is suitable with existing product, use reliable.
Description
Technical field:
The utility model relates to Diesel Engine Technique Field, particularly relates to the silencing apparatus in diesel engine exhaust system.
Background technique:
Along with the raising of modern life level, the environmental consciousness of people constantly increases, the requirement of diesel engine to emission performance also improves thereupon, claimant is at Chinese patent ZL201220733146.3, ZL201220733523.3 individually discloses a kind of single cylinder diesel double-cavity silencer, the former is vertical structure, the latter is horizontal type structure, the silencing apparatus of these two kinds of structures is developed for single-cylinder vertical air-cooled diesel engine, they all comprise suction tude, upper shell, lower shell body, dividing plate, elementary noise reducing pipe, terminal noise reducing pipe and anti-scalding shield, upper shell and lower shell body enclose a cavity body, apertured partition is provided with in cavity body, cavity body is separated into the first expansion chamber and the second expansion chamber, elementary noise reducing pipe and the first expansion chamber interlink, noise reduction hole is provided with at the outer round surface of elementary noise reducing pipe, suction tude is fixed on the revealed section of elementary noise reducing pipe, the suction port of suction tude and the relief opening of engine cylinder cap interlink, suction tude and the first expansion chamber interlink, terminal noise reducing pipe one section is placed in the second expansion chamber, the outlet of terminal noise reducing pipe interlinks with air, the outer round surface of built-in section of terminal noise reducing pipe is provided with noise reduction hole, anti-scalding shield is fixed on the housing that is made up of upper shell and lower shell body, and have space between anti-scalding shield and the housing be made up of upper shell and lower shell body, dividing plate is provided with vent.These two kinds of double-cavity silencer take secondary expansion noise reduction and pressure limiting discharge principle, the high temperature and high pressure gas that cylinder cover for diesel engine is discharged is successively through quadratic extension noise reduction and cooling, a pressure limiting exhausting and denoising, first time expansion noise reduction and cooling be produce between elementary noise reducing pipe and the first expansion chamber, high temperature and high pressure gas by the noise reduction hole on elementary noise reducing pipe to the first expansion chamber release pressure and temperature; Second time expansion noise reduction and cooling produce between the first expansion chamber and the second expansion chamber, makes the pressed gas in the first expansion chamber obtain further step-down and cooling.The cooling of the silencing apparatus of this structure, noise reduction is all very desirable, but manufacturing technique requirent is very high, manufacture cycle is long, efficiency is low, cost remains high, wherein, the noise elimination cavity that the most outstanding is after being welded by upper shell and lower shell body, because upper shell and lower shell body are the panel beating tensioning member of the large degree of depth, stretching, it is very high to require, upper shell and lower shell body all have to pass through succeeding stretch could be shaping, only stretching will Second Mate's drawing die, each part needs through blanking, primary tensile, shaping succeeding stretch, shaping trimming operation, then through docking welding manner, upper shell and lower shell body are enclosed a noise elimination cavity, this structure fabrication processes requires high, production mould is many, each noise elimination cavity needs through secondary blanking, stretch for four times, secondary trimming, and the necessary omnidistance seal welding of butt joint edge, not only the utilization ratio of steel plate is low, fabrication cycle is long, manufacturing efficiency is low, the cost of production of product is high, user is difficult to accept.Owing to being docking structure between upper shell and lower shell body, if having rosin joint between the two, diesel engine uses under the operating conditions of dither, is easy to generation and shakes and split between upper shell and lower shell body.Such silencing apparatus not only cost of production is high, and vibrationproof poor performance, and working life is short, do not meet existing energy-saving and cost-reducing requirement, claimant is optimized improvement to prior art for this reason, devises a kind of diesel engine silencer of exempting from stretching anechoic chamber structure, with solving above problem.
Model utility content:
The purpose of this utility model is to provide a kind of diesel engine silencer of exempting from stretching anechoic chamber structure, and its structure is simple, and preparation process is good, and cost of production is low, and antivibration anti crack performance is good, and anti-acoustic capability is suitable with existing product, uses reliable.
The technical solution adopted in the utility model is as follows:
A kind of diesel engine silencer of exempting from stretching anechoic chamber structure, it is characterized in that: comprise suction tude, exempt from stretching sound attenuation, silencing board, elementary noise reducing pipe, terminal noise reducing pipe and anti-scalding shield, exempt from stretching sound attenuation and comprise section bar body, left end cap and right end cap, left end cap and right end cap seal the two ends being fixed on section bar body respectively, silencing board is arranged on exempts from stretching sound attenuation, silencing board is provided with bloop, and be separated into exempting from stretching sound attenuation the silencing cavity comprising elementary noise reduction cavity and terminal noise reduction cavity, elementary noise reduction cavity and elementary noise reducing pipe interlink, terminal noise reduction cavity and terminal noise reducing pipe interlink, outlet and the air of terminal noise reducing pipe interlink, suction tude is interlinked by elementary noise reducing pipe and elementary noise reduction cavity, anti-scalding shield be fixed on exempt from stretching sound attenuation outer end on, make to exempt from there is space between stretching sound attenuation and anti-scalding shield.
Further, the sectional shape of described section bar body is round or polygonal.
Further, described left end cap is made up of end face, engagement journal and pit, and end face and engagement journal enclose pit, and the outer surface of engagement journal matches with the internal surface of section bar body, and the structure of right end cap is identical with the structure of left end cap.
Further, described left end cap is made up of end face, engagement journal and pit, and end face and engagement journal enclose pit, and the internal surface of engagement journal matches with the outer surface of section bar body, and the structure of right end cap is identical with the structure of left end cap.
Further, described left end cap and right end cap are board-like end cap.
Further, vertical being arranged on of described silencing board is exempted from stretching sound attenuation, distributes about the elementary noise reduction cavity of gained and terminal noise reduction cavity.
Further, being arranged on of described silencing board level is exempted from stretching sound attenuation, and the elementary noise reduction cavity of gained and terminal noise reduction cavity distribute up and down.
Further, maximal pore size≤20 millimeter in the noise reduction hole on described elementary noise reducing pipe, on elementary noise reducing pipe, the area sum in all noise reduction holes is 1/5 ~ 1/50 of elementary noise reduction cavity volume.
Further, maximal pore size≤20 millimeter in the noise reduction hole on described terminal noise reducing pipe, on terminal noise reducing pipe, the area sum in all noise reduction holes is 1/5 ~ 1/50 of terminal noise reduction cavity volume.
Further, maximal pore size≤20 millimeter of the bloop on described silencing board, on silencing board, the area sum of all bloops is 1/2 ~ 1/50 of elementary noise reduction cavity volume.
The combination that stretching sound attenuation comes alternative original upper shell and lower shell body is exempted from because the utility model takes, described stretching sound attenuation of exempting from comprises section bar body, left end cap and right end cap, left end cap and right end cap seal the two ends being fixed on section bar body respectively, in the production process of reality, section bar body is standard tubing, as long as directly cut according to demand, do not need again stretched, welding just directly obtains the sound attenuation of tubulose, the two ends of sound attenuation and end bracket enclosed integrally welded, left and right end cover structure is identical, both can be plank frame, also can be cup lid structure, this Split assembled structure, sound attenuation is without the need to carrying out the processing of large degree of depth succeeding stretch, directly replace with section bar body, eliminate expensive drawing die, as long as the easy punch process of end cap, fusion length reduces 30% ~ 35% than prior art, the utilization ratio of material brings up to 85% ~ 90% by 65%, its fabricating cost can decline 15% ~ 18%, the antivibration anti crack performance of product is good.Its cooling, the effect of noise reduction and the identical of prior art.This structure both simplified production technology, reduce materials consumption, shorten the manufacture cycle, reach the highest manufacturing efficiency, maintain again the cooling noise reduction of existing product, improve the antivibration anti crack performance of product, overall working life also increases substantially thereupon, not only meet existing energy-saving and cost-reducing requirement, be conducive to production and assembly, operational safety is very high.
Accompanying drawing illustrates:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is that schematic diagram is looked on a left side of Fig. 1;
Fig. 3 is the structural representation of embodiment 2;
Fig. 4 is the structural representation of embodiment 3;
Fig. 5 is the horizontally disposed structural representation of silencing board in the utility model;
In figure: 1-suction tude; 2-exempts from stretching sound attenuation; 3-silencing board; The elementary noise reducing pipe of 4-; 5-terminal noise reducing pipe; 6-anti-scalding shield; The elementary noise reduction cavity of 7-; 8-terminal noise reduction cavity; 9-noise reduction hole; 21-section bar body; 22-left end cap; 23-right end cap; 31-bloop; 221-end face; 222-engagement journal; 223-pit.
Embodiment:
Below in conjunction with accompanying drawing, embodiment of the present utility model is described:
Embodiment 1:
The diesel engine silencer of a kind of die cavity anechoic chamber structure, as shown in Fig. 1 ~ 2, comprise suction tude 1, exempt from stretching sound attenuation 2, silencing board 3, elementary noise reducing pipe 4, terminal noise reducing pipe 5 and anti-scalding shield 6, exempt from stretching sound attenuation 2 by section bar body 21, left end cap 22 and right end cap 23 form, described section bar body 21 is round tubing, left end cap 22 and right end cap 23 are cup lid structure, described left end cap 22 is by end face 221, engagement journal 222 and pit 223 form, end face 221 and engagement journal 222 enclose pit 223, the internal surface of engagement journal 222 matches with the outer surface of section bar body 21, and it is integrally welded hermetically, the structure of right end cap 23 is identical with the structure of left end cap 22, also identical with left end cap 22 with the mode that is connected of section bar body 21, what silencing board 3 was vertical is arranged in section bar body 21, section bar body 21 is separated elementary noise reduction cavity 7 in about distribution and terminal noise reduction cavity 8, silencing board 3 is provided with bloop 31, described bloop 31 for diameter be 6 millimeters of circular holes, on silencing board 3, the area sum of all bloops 31 is 1/18.3 of elementary noise reduction cavity 7 volume, elementary noise reducing pipe 4 is made up of revealed section and built-in section, the outer round surface of built-in section offers noise reduction hole 9, built-in section of elementary noise reducing pipe 4 is arranged in elementary noise reduction cavity 7, revealed section is positioned at outside elementary noise reduction cavity 7, the aperture in the noise reduction hole 9 on elementary noise reducing pipe 4 is 6 millimeters, on elementary noise reducing pipe 4, the area sum in all noise reduction holes 9 is 1/11.5 of elementary noise reduction cavity 7 volume, suction tude 1 is fixed on the revealed section of elementary noise reducing pipe 4, the suction port of suction tude 1 and the relief opening of engine cylinder cap interlink, suction tude 1 and elementary noise reducing pipe 4 interlink, terminal noise reducing pipe 5 is also made up of revealed section and built-in section, the outer round surface of built-in section offers noise reduction hole 9, built-in section of terminal noise reducing pipe 5 is arranged in terminal noise reduction cavity 8, revealed section is positioned at outside terminal noise reduction cavity 8, and interlink with the external world, the epimere outer round surface of terminal noise reducing pipe 5 is provided with noise reduction hole 9, the aperture in the noise reduction hole 9 on terminal noise reducing pipe 5 is 6 millimeters, on terminal noise reducing pipe 5, the area sum in all noise reduction holes 9 is 1/11.5 of terminal noise reduction cavity 8 volume, anti-scalding shield 6 be fixed on exempt from stretching sound attenuation 2 outer end on, make to exempt from there is space between stretching sound attenuation 2 and anti-scalding shield 6.
Embodiment 2:
Compared with above-described embodiment 1, difference is, left end cap 22 and right end cap 23 different from the mode that is connected of section bar body 21, left end cap 22 is matched by the outer surface of engagement journal 222 and the internal surface of section bar body 21, and to merge seal welding integral, right end cap 23 is all identical with the structure of left end cap 22 with the mode that is connected of section bar body 21, as shown in Figure 3.
Embodiment 3:
Difference from Example 1 is left end cap 22 and right end cap 23, and in this example, left end cap 22 and right end cap 23 are board-like circular end cap, as shown in Figure 4.
Mode of execution of the present utility model is a lot, claimant cannot repeat to enumerate, such as silencing board 3 both can be vertical setting in section bar body 21, also can be being horizontally disposed with as shown in Figure 5, section bar body 21 can select circular pipe, also can select rectangle pipe material, the shape of silencing board 3, on it, the aperture size of bloop 31 also can change, and on silencing board 3, the area sum of all bloops 31 all can change with the ratio of elementary noise reduction cavity 7 volume.As long as adopt section bar body 21 as all technological schemes of sound attenuation all within the protection domain of this patent.
Claims (9)
1. exempt from the diesel engine silencer of stretching anechoic chamber structure for one kind, it is characterized in that: comprise suction tude (1), exempt from stretching sound attenuation (2), silencing board (3), elementary noise reducing pipe (4), terminal noise reducing pipe (5) and anti-scalding shield (6), exempt from stretching sound attenuation (2) and comprise section bar body (21), left end cap (22) and right end cap (23), left end cap (22) and right end cap (23) seal the two ends being fixed on section bar body (21) respectively, silencing board (3) is arranged on exempts from stretching sound attenuation (2), silencing board (3) is provided with bloop (31), and stretching sound attenuation (2) will be exempted from be separated into the silencing cavity comprising elementary noise reduction cavity (7) and terminal noise reduction cavity (8), elementary noise reduction cavity (7) and elementary noise reducing pipe (4) interlink, terminal noise reduction cavity (8) and terminal noise reducing pipe (5) interlink, outlet and the air of terminal noise reducing pipe (5) interlink, suction tude (1) is interlinked by elementary noise reducing pipe (4) and elementary noise reduction cavity (7), anti-scalding shield (6) be fixed on exempt from stretching sound attenuation (2) outer end on, make to exempt from there is space between stretching sound attenuation (2) and anti-scalding shield (6).
2. exempt from the diesel engine silencer of stretching anechoic chamber structure according to claim 1, it is characterized in that: the sectional shape of described section bar body (21) is round or polygonal.
3. according to claim 1 or 2, exempt from the diesel engine silencer of stretching anechoic chamber structure, it is characterized in that: described left end cap (22) is made up of end face (221), engagement journal (222) and pit (223), end face (221) and engagement journal (222) enclose pit (223), the outer surface of engagement journal (222) matches with the internal surface of section bar body (21), and the structure of right end cap (23) is identical with the structure of left end cap (22).
4. according to claim 1 or 2, exempt from the diesel engine silencer of stretching anechoic chamber structure, it is characterized in that: described left end cap (22) and right end cap (23) are board-like end cap.
5. exempt from the diesel engine silencer of stretching anechoic chamber structure according to claim 1, it is characterized in that: described silencing board (3) vertical being arranged on is exempted from stretching sound attenuation (2), the elementary noise reduction cavity of gained (7) and the distribution of terminal noise reduction cavity (8) left and right.
6. exempt from the diesel engine silencer of stretching anechoic chamber structure according to claim 1, it is characterized in that: being arranged on of described silencing board (3) level is exempted from stretching sound attenuation (2), and the elementary noise reduction cavity of gained (7) and terminal noise reduction cavity (8) distribute up and down.
7. exempt from the diesel engine silencer of stretching anechoic chamber structure according to claim 1, it is characterized in that: maximal pore size≤20 millimeter in the noise reduction hole (9) on described elementary noise reducing pipe (4), the area sum of the upper all noise reduction holes (9) of elementary noise reducing pipe (4) is 1/5 ~ 1/50 of elementary noise reduction cavity (7) volume.
8. exempt from the diesel engine silencer of stretching anechoic chamber structure according to claim 1, it is characterized in that: maximal pore size≤20 millimeter in the noise reduction hole (9) on described terminal noise reducing pipe (5), the area sum of the upper all noise reduction holes (9) of terminal noise reducing pipe (5) is 1/5 ~ 1/50 of terminal noise reduction cavity (8) volume.
9. exempt from the diesel engine silencer of stretching anechoic chamber structure according to claim 1, it is characterized in that: maximal pore size≤20 millimeter of the bloop (31) on described silencing board (3), the area sum of the upper all bloops (31) of silencing board (3) is 1/2 ~ 1/50 of elementary noise reduction cavity (7) volume.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420057543.2U CN204163805U (en) | 2014-02-02 | 2014-02-02 | A kind of diesel engine silencer of exempting from stretching anechoic chamber structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420057543.2U CN204163805U (en) | 2014-02-02 | 2014-02-02 | A kind of diesel engine silencer of exempting from stretching anechoic chamber structure |
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| Publication Number | Publication Date |
|---|---|
| CN204163805U true CN204163805U (en) | 2015-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420057543.2U Expired - Lifetime CN204163805U (en) | 2014-02-02 | 2014-02-02 | A kind of diesel engine silencer of exempting from stretching anechoic chamber structure |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106121775A (en) * | 2016-08-25 | 2016-11-16 | 无锡开普动力有限公司 | A kind of single-cylinder air-cooled machine acoustic wave filter structure |
| CN106150602A (en) * | 2015-03-25 | 2016-11-23 | 常州科普动力机械有限公司 | Silencer for automobile and method of work thereof |
| CN106285873A (en) * | 2016-08-25 | 2017-01-04 | 无锡开普动力有限公司 | A kind of multi-functional lobby device of air for electromotor and electromotor |
| CN106321207A (en) * | 2016-08-25 | 2017-01-11 | 无锡开普动力有限公司 | Engine exhaust device being convenient to maintain and engine |
| CN109538331A (en) * | 2018-12-24 | 2019-03-29 | 重庆凯罗尔机械配件有限公司 | A kind of muffler |
-
2014
- 2014-02-02 CN CN201420057543.2U patent/CN204163805U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106150602A (en) * | 2015-03-25 | 2016-11-23 | 常州科普动力机械有限公司 | Silencer for automobile and method of work thereof |
| CN106121775A (en) * | 2016-08-25 | 2016-11-16 | 无锡开普动力有限公司 | A kind of single-cylinder air-cooled machine acoustic wave filter structure |
| CN106285873A (en) * | 2016-08-25 | 2017-01-04 | 无锡开普动力有限公司 | A kind of multi-functional lobby device of air for electromotor and electromotor |
| CN106321207A (en) * | 2016-08-25 | 2017-01-11 | 无锡开普动力有限公司 | Engine exhaust device being convenient to maintain and engine |
| CN109538331A (en) * | 2018-12-24 | 2019-03-29 | 重庆凯罗尔机械配件有限公司 | A kind of muffler |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 213200, No. two, 9 West Road, Jin Town, Jintan District, Jiangsu, Changzhou, China Patentee after: Changzhou Jintan better Machinery Co.,Ltd. Address before: 213200, No. two, 9 West Road, Jin Town, Changzhou City, Jiangsu, Jintan Patentee before: JINTAN JIAYUE MACHINERY Co.,Ltd. |
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| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20150218 |
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| CX01 | Expiry of patent term |