CN110939497A - Full water-cooling combined exhaust silencer for diesel engine - Google Patents

Full water-cooling combined exhaust silencer for diesel engine Download PDF

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Publication number
CN110939497A
CN110939497A CN201911409368.2A CN201911409368A CN110939497A CN 110939497 A CN110939497 A CN 110939497A CN 201911409368 A CN201911409368 A CN 201911409368A CN 110939497 A CN110939497 A CN 110939497A
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CN
China
Prior art keywords
cavity
silencer
silencing
shaped
pipe
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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.)
Granted
Application number
CN201911409368.2A
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Chinese (zh)
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CN110939497B (en
Inventor
罗雄彬
冉毅
李瑜
刘芝建
王先健
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.)
CHONGQING DINKING POWER MACHINERY Co Ltd
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CHONGQING DINKING POWER MACHINERY Co Ltd
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Priority to CN201911409368.2A priority Critical patent/CN110939497B/en
Publication of CN110939497A publication Critical patent/CN110939497A/en
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Publication of CN110939497B publication Critical patent/CN110939497B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F01N1/082—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling the gases passing through porous members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F01N1/083—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using transversal baffles defining a tortuous path for the gases or successively throttling gas flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F01N1/10—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling in combination with sound-absorbing materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/14—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having thermal insulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/04—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using liquids
    • F01N3/043—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using liquids without contact between liquid and exhaust gases
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)

Abstract

The invention discloses a full water-cooling combined exhaust muffler of a diesel engine, a cooling liquid channel is formed between the inner shell and the outer shell of the muffler, a vertical partition board is arranged in the inner cavity of the silencer to divide the inner cavity of the silencer into a front silencer cavity and a rear silencer cavity, a horizontal clapboard is arranged at the middle upper part of the front cavity of the silencer to divide the front cavity of the silencer into a first silencing cavity and a second silencing cavity, a first silencing resistance pipe and a second silencing resistance pipe are arranged in the second silencing cavity, a third silencing and blocking pipe and a fourth silencing and blocking pipe are arranged in the rear cavity of the silencer, the upper end of the first silencing and blocking pipe extends into the first silencing cavity, the first partition board is arranged in the second silencing cavity, the second partition board is arranged in the rear cavity of the silencer, so that gas flows in an S-shaped path in the corresponding cavity, the second silencing resistance pipe is communicated with the third silencing resistance pipe through a horizontal connecting pipe, and silencing cotton is arranged on the inner wall of the rear cavity of the silencer. Can carry out maximum amortization thermal-insulated, and compact structure is reasonable, and occupation space is little.

Description

Full water-cooling combined exhaust silencer for diesel engine
Technical Field
The invention relates to the technical field of diesel generators, in particular to a full water-cooling combined exhaust muffler for a diesel generator, which is used for performing water-cooling on the exhaust muffler of an engine.
Background
The existing water-cooling combined muffler is divided into a front cavity and a rear cavity, wherein the space between the inner chamber and the outer chamber of the front cavity is filled with cooling liquid, and the rear cavity is filled with silencing cotton for silencing and heat insulation. When the generator set works under the high-temperature condition, the exhaust high-temperature gas of the engine can be radiated into the sound box through the rear cavity, so that the temperature in the sound box of the generator set is overhigh, and the aging of rubber parts and the reduction of the power of the generator set can be caused when the generator set works for a long time.
Disclosure of Invention
The invention aims to provide a full water-cooling combined exhaust muffler for a diesel engine, which can be used for carrying out better water-cooling on the exhaust muffler of the engine, and has lower heat radiated to a sound box and lower noise.
Therefore, the technical scheme adopted by the invention is as follows: a full water-cooling combined exhaust muffler of a diesel engine comprises an inner muffler shell and an outer muffler shell, wherein a cooling liquid channel is formed between the inner muffler shell and the outer muffler shell, a vertical partition plate is arranged in an inner chamber of the muffler, the inner chamber of the muffler is divided into a front muffler chamber and a rear muffler chamber, a horizontal partition plate is arranged at the middle upper part of the front muffler chamber, the front muffler chamber is divided into a first muffling chamber and a second muffling chamber, an air inlet pipe is arranged on the left side wall of the first muffling chamber, an exhaust pipe is arranged at the position, close to the bottom, of the right side wall of the rear muffler chamber, a first muffling resistance pipe is arranged at the right end of the second muffling chamber, a second muffling resistance pipe is arranged at the left end of the second muffling chamber, a third muffling resistance pipe is arranged at the left end of the rear muffler chamber, a fourth muffling resistance pipe is arranged at the right end of the rear muffler chamber, and the upper end of the first, the upper and lower ends of the other silencing and blocking pipes are connected and sealed with the inner cavity of the corresponding silencing cavity, a first partition plate is arranged in the second silencing cavity, a second partition plate is arranged in the rear cavity of the silencer to enable gas to flow in an S-shaped route in the corresponding cavity, the second silencing and blocking pipe is communicated with the third silencing and blocking pipe through a horizontal connecting pipe, and silencing cotton is arranged on the inner wall of the rear cavity of the silencer.
Preferably, the adjacent first partition boards are alternately arranged in tandem to form an S-shaped airflow path, the second partition boards are alternately arranged in pairs to form an S-shaped airflow path, each pair of second partition boards is formed by an n-shaped or u-shaped bent board, the top of the n-shaped partition board is fixed at the top of the rear cavity of the silencer, or the bottom of the u-shaped partition board is fixed at the bottom of the rear cavity of the silencer, and the n-shaped or u-shaped bent board is provided with air holes; and the distance L1 between the suspended end of the second partition plate and the rear cavity of the muffler is smaller than the distance L2 between the first partition plate and the second muffling cavity. The first partition plate is not provided with a hole, and the gas flows forwards through a narrow slit formed by the partition plate and the cavity, so that the gas flow path is prolonged; trompil on the second baffle, most air current flows forward through the slot that baffle and cavity formed, the extension air current route, adopt littleer slot structure, can ensure that gas can fully contact with the amortization cotton on the cavity inner wall, improve noise elimination effect, a small amount of gas that does not reach the flow then flows forward through the trompil on the second baffle, the aperture flows then can improve noise reduction effect, consequently first baffle, the double effect of amortization and noise reduction has been considered comprehensively to the second baffle, it is first through, the gas behind the second amortization chamber, the temperature reduces to some extent, combine the structure of amortization cotton and foraminiferous second baffle, the amortization noise reduction effect restricts more.
More preferably, a support plate is arranged between the silencer inner shell and the silencer outer shell, the main body of the support plate is welded on the silencer inner shell, the left end and the right end of the support plate are perpendicularly bent towards the silencer outer shell, and then the support plate is welded on the silencer outer shell through outward flanges, so that the support plate is integrally shaped like a pi, and the installation structure between the silencer inner shell and the silencer outer shell is simplified.
More preferably, the support plate is further provided with a lightening hole to reduce weight.
More preferably, the silencer casing is provided with "L-shaped mounting seats" on the left and right outer sides thereof, respectively.
Further preferably, the vertical partition plate is arranged in the middle front and back, the inner cavity of the silencer is divided into a front silencer cavity and a rear silencer cavity, the front cavity and the rear cavity are balanced in size, and the silencing effect is better than a large and small structure through experimental verification.
The invention has the beneficial effects that: a cooling liquid channel is formed between the inner shell and the outer shell of the silencer, the inner cavity of the integral silencer is wrapped by cooling liquid to form a full water cooling structure, and three silencing cavities, four silencing resistance pipes, a horizontal connecting pipe, a plurality of first partition plates, a plurality of second partition plates and silencing cotton in the silencer are combined to carry out maximum silencing and heat insulation on the front cavity and the rear cavity of the silencer, so that the silencer has the lowest heat radiated to the silencing box and the lowest noise; meanwhile, by optimizing the internal structure of the silencer, the circulation route of gas in the silencer is longest, the structure is compact and reasonable, and the occupied space is small.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a sectional view a-a of fig. 1.
Fig. 3 is a sectional view B-B of fig. 1. .
Detailed Description
The invention will be further illustrated by the following examples in conjunction with the accompanying drawings:
referring to fig. 1-3, a full water-cooling combined exhaust muffler for a diesel engine has a double-layered structure, which is divided into an inner muffler shell and an outer muffler shell. A cooling liquid channel 1 is formed between the inner shell and the outer shell of the silencer, so that the inner cavity of the integral silencer can be wrapped by cooling liquid, and the full-water-cooling silencer is formed.
The silencer is characterized in that a vertical partition plate is arranged in the inner cavity of the silencer, the inner cavity of the silencer is divided into a front silencer cavity and a rear silencer cavity, a horizontal partition plate is arranged at the middle upper part of the front silencer cavity, and the front silencer cavity is divided into a first silencing cavity and a second silencing cavity. Therefore, the inner cavity of the silencer is divided into a first silencing cavity and a second silencing cavity, and the rear cavity of the silencer, namely a third silencing cavity, is three cavities. Preferably, the vertical partition plate is arranged in the middle front and back, and the inner cavity of the silencer is divided into a front silencer cavity and a rear silencer cavity.
An air inlet pipe 2 is arranged on the left side wall of the first silencing cavity, and an exhaust pipe 3 is arranged at the position, close to the bottom, of the right side wall of the rear cavity of the silencer.
The right end of the second muffling cavity is provided with a first muffling and blocking pipe 4, and the left end of the second muffling cavity is provided with a second muffling and blocking pipe 5. The left end of the rear cavity of the silencer is provided with a third silencing and blocking pipe 6, and the right end of the rear cavity of the silencer is provided with a fourth silencing and blocking pipe 7. The second muffling and blocking pipe 5 is communicated with the third muffling and blocking pipe 6 through a horizontal connecting pipe 10. The side walls of the first silencing and blocking pipe 4, the second silencing and blocking pipe 5, the third silencing and blocking pipe 6 and the fourth silencing and blocking pipe 7 are all provided with air holes for air inlet or air outlet.
Except that the upper end of the first silencing and blocking pipe 4 extends into the inner cavity of the first silencing cavity, the upper and lower ends of the other silencing and blocking pipes are connected and sealed with the inner cavity of the corresponding silencing cavity.
A first partition plate 8 is arranged in the second silencing cavity, a second partition plate 9 is arranged in the rear cavity of the silencer, so that gas flows in an S-shaped path in the corresponding cavity, and silencing cotton 11 is arranged on the inner wall of the rear cavity of the silencer.
Preferably, adjacent first partition plates 8 are alternately arranged in tandem to form an S-shaped air flow path, and the second partition plates 9 are alternately arranged in pairs of two front partitions and two rear partitions to form an S-shaped air flow path. Each pair of second partition plates 9 is formed by n-shaped or u-shaped bent plates; if the n-shaped bending plate is adopted, the top of the n-shaped bending plate is fixed on the top of the rear cavity of the silencer; or a u-shaped bending plate is adopted, and the bottom of the u-shaped bending plate is fixed at the bottom of the rear cavity of the silencer. The n-shaped or u-shaped bending plate is also provided with air holes.
In addition, the distance L1 between the suspended end of the second partition board 9 and the rear cavity of the silencer is smaller than the distance L2 between the first partition board 8 and the second silencing cavity, so that the width of the narrow gap position in the rear cavity of the silencer is smaller than the width of the narrow gap position in the second silencing cavity.
In order to simplify the installation, reduce the whole weight and ensure the reliable supporting strength at the same time, a supporting plate 12 is arranged between the silencer inner shell and the silencer outer shell, the main part of the supporting plate 12 is welded on the silencer inner shell, the left end and the right end of the supporting plate 12 are vertically bent towards the silencer outer shell, and then are welded on the silencer outer shell through outward flanges, so that the supporting plate 12 is in a pi shape as a whole. The support plate 12 is also provided with lightening holes 12 a.
The left and right outer sides of the silencer shell are respectively provided with an L-shaped mounting seat 13 for mounting the silencer in the silencing box of the diesel engine.
The direction of the air flow in the silencer is shown as the arrow in the figure, the air enters the first silencing cavity through the air inlet pipe 2, then enters the second silencing cavity through the first silencing blocking pipe 4, enters the second silencing blocking pipe 5 under the flow guide effect of the first partition plates 8, then enters the rear cavity of the silencer through the horizontal connecting pipe 10 and the third silencing blocking pipe 6, and is discharged through the fourth silencing blocking pipe 7 and the exhaust pipe 3 under the flow guide effect of the second partition plates 9.

Claims (6)

1. The utility model provides a full water-cooling combined type exhaust muffler of diesel engine which characterized in that: the silencer is divided into an inner silencer shell and an outer silencer shell, a cooling liquid channel (1) is formed between the inner silencer shell and the outer silencer shell, a vertical partition plate is arranged in the inner silencer cavity, the inner silencer cavity is divided into a front silencer cavity and a rear silencer cavity, a horizontal partition plate is arranged at the middle upper part of the front silencer cavity, the front silencer cavity is divided into a first silencing cavity and a second silencing cavity, an air inlet pipe (2) is arranged on the left side wall of the first silencing cavity, an exhaust pipe (3) is arranged at the position, close to the bottom, of the right side wall of the rear silencer cavity, a first silencing blocking pipe (4) is arranged at the right end of the second silencing cavity, a second silencing blocking pipe (5) is arranged at the left end of the second silencing cavity, a third silencing blocking pipe (6) is arranged at the left end of the rear silencer cavity, a fourth silencing blocking pipe (7) is arranged at the right end of the rear silencer cavity, and the upper end of the first silencing blocking pipe (4) extends into the, the upper and lower ends of the other silencing and blocking pipes are connected and sealed with the inner cavity of the corresponding silencing cavity, a first partition plate (8) is arranged in the second silencing cavity, a second partition plate (9) is arranged in the rear cavity of the silencer to enable gas to flow in an S-shaped path in the corresponding cavity, the second silencing and blocking pipe (5) is communicated with the third silencing and blocking pipe (6) through a horizontal connecting pipe (10), and silencing cotton (11) is arranged on the inner wall of the rear cavity of the silencer.
2. The full water-cooled compound exhaust muffler for a diesel engine as set forth in claim 1, wherein: the adjacent first partition plates (8) are alternately arranged in tandem to form an S-shaped airflow path, the second partition plates (9) are alternately arranged in pairs of two front partitions and two rear partitions to form an S-shaped airflow path, each pair of second partition plates (9) is formed by an n-shaped or u-shaped bent plate, the top of the n-shaped is fixed at the top of the rear cavity of the silencer, or the bottom of the u-shaped is fixed at the bottom of the rear cavity of the silencer, and the n-shaped or u-shaped bent plate is provided with air holes; the distance L1 between the suspended end of the second clapboard (9) and the rear cavity of the silencer is smaller than the distance L2 between the first clapboard (8) and the second silencing cavity.
3. The full water-cooling composite exhaust muffler of the diesel engine according to claim 1 or 2, wherein: a support plate (12) is arranged between the silencer inner shell and the silencer outer shell, the main body of the support plate (12) is welded on the silencer inner shell, and the left end and the right end of the support plate (12) are vertically bent towards the silencer outer shell and then welded on the silencer outer shell through outward flanges, so that the support plate (12) is integrally shaped like a Pi.
4. The full water-cooled compound exhaust muffler for a diesel engine as set forth in claim 3, wherein: the support plate (12) is also provided with a lightening hole.
5. The full water-cooling composite exhaust muffler of the diesel engine according to claim 1 or 2, wherein: the left and right outer sides of the silencer shell are respectively provided with an L-shaped mounting seat (13).
6. The full water-cooled compound exhaust muffler for a diesel engine as set forth in claim 3, wherein: the vertical partition plate is arranged in the middle front and back, and an inner cavity of the silencer is divided into a front silencer cavity and a rear silencer cavity.
CN201911409368.2A 2019-12-31 2019-12-31 Full water cooling composite exhaust muffler for diesel engine Active CN110939497B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911409368.2A CN110939497B (en) 2019-12-31 2019-12-31 Full water cooling composite exhaust muffler for diesel engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911409368.2A CN110939497B (en) 2019-12-31 2019-12-31 Full water cooling composite exhaust muffler for diesel engine

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CN110939497A true CN110939497A (en) 2020-03-31
CN110939497B CN110939497B (en) 2023-08-15

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201747435U (en) * 2010-07-19 2011-02-16 中国人民解放军重庆通信学院 Muffler of resistance compound type water cooling type diesel engine generator set
CN204476537U (en) * 2014-12-18 2015-07-15 重庆博沃发动机配件制造有限公司 Water-cooled silencing apparatus
CN105422217A (en) * 2015-12-11 2016-03-23 重庆秋航机械有限责任公司 Muffler structure for motorcycle
CN208831072U (en) * 2018-09-21 2019-05-07 湖北迪耐斯通达排放处理系统有限公司 A kind of commercial vehicle tail-gas after treatment apparatus
US10308339B1 (en) * 2015-12-17 2019-06-04 Woodrow Woods Marine muffler with integral bypass water management
CN211202083U (en) * 2019-12-31 2020-08-07 重庆鼎工机电有限公司 Full water-cooling combined exhaust silencer of diesel engine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201747435U (en) * 2010-07-19 2011-02-16 中国人民解放军重庆通信学院 Muffler of resistance compound type water cooling type diesel engine generator set
CN204476537U (en) * 2014-12-18 2015-07-15 重庆博沃发动机配件制造有限公司 Water-cooled silencing apparatus
CN105422217A (en) * 2015-12-11 2016-03-23 重庆秋航机械有限责任公司 Muffler structure for motorcycle
US10308339B1 (en) * 2015-12-17 2019-06-04 Woodrow Woods Marine muffler with integral bypass water management
CN208831072U (en) * 2018-09-21 2019-05-07 湖北迪耐斯通达排放处理系统有限公司 A kind of commercial vehicle tail-gas after treatment apparatus
CN211202083U (en) * 2019-12-31 2020-08-07 重庆鼎工机电有限公司 Full water-cooling combined exhaust silencer of diesel engine

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