CN105332764A - Noise-reduction environment-friendly muffler for small-tonnage diesel fork lift truck - Google Patents

Noise-reduction environment-friendly muffler for small-tonnage diesel fork lift truck Download PDF

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Publication number
CN105332764A
CN105332764A CN201510877625.0A CN201510877625A CN105332764A CN 105332764 A CN105332764 A CN 105332764A CN 201510877625 A CN201510877625 A CN 201510877625A CN 105332764 A CN105332764 A CN 105332764A
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CN
China
Prior art keywords
muffler chamber
silencer
muffler
lift truck
fork lift
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.)
Pending
Application number
CN201510877625.0A
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Chinese (zh)
Inventor
叶青
钟传浩
张�林
范贝贝
许诗新
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.)
ANHUI HECHA FORKLIFT Co Ltd
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ANHUI HECHA FORKLIFT Co Ltd
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Publication date
Application filed by ANHUI HECHA FORKLIFT Co Ltd filed Critical ANHUI HECHA FORKLIFT Co Ltd
Priority to CN201510877625.0A priority Critical patent/CN105332764A/en
Publication of CN105332764A publication Critical patent/CN105332764A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a noise-reduction environment-friendly muffler for a small-tonnage diesel fork lift truck. The noise-reduction environment-friendly muffler comprises a muffler barrel; an exhaust gas inlet pipe is arranged at a gas inlet end of the muffler barrel; an exhaust gas outlet pipe is arranged at an exhaust end of the muffler barrel; the noise-reduction environment-friendly muffler further comprises three partition baffle plates arranged on the muffler barrel; the three partition baffle plates orderly divide the muffler barrel into a first muffler chamber, a second muffler chamber, a third muffler chamber and a fourth muffler chamber from the gas inlet end to the exhaust end; an end portion of the exhaust gas inlet pipe is located within the second muffler chamber, while an end portion of the exhaust gas outlet pipe is located within the third muffler chamber; the first muffler chamber communicates with the second muffler chamber through a first inner insertion pipe, while the first muffler chamber communicates with the fourth muffler chamber through a second inner insertion pipe and the third muffler chamber communicates with the fourth muffler chamber through a third inner insertion pipe.

Description

A kind of noise reduction environment friendly silencer for little tonnage diesel fork lift truck
Technical field
The present invention relates to a kind of noise reduction environment friendly silencer for little tonnage diesel fork lift truck, belong to fork truck manufacturing technology field.
Background technique
Vent systems heating function reduces the intense noise sent when gas of combustion is discharged as much as possible, and eliminate the flame in waste gas.And baffler role in vent systems eliminates air power noise exactly.The multiplex expansion chamber of current diesel fork lift truck exhaust silencer add perforated pipe or in add interpolation type silencing apparatus, and expansion chamber to add simple, the easy to manufacture and sound deadening capacity of inner-intubation acoustic wave filter structure large, be the muffler structure of middle-small size steam, diesel engine first-selection.
The exhaust that diesel fork lift truck exhaust silencer of the prior art mainly exists motor has some setbacks, unreasonable, and silencing apparatus surface temperature is high have impact on soundproof effect and the high deficiency adding the loss of motor, water tank, vehicle frame etc. etc. of the surface temperature of silencing apparatus; And dissipative muffler is better relative to low-frequency noise to high-frequency noises effect, reactive muffler is then poor relative to intermediate frequency, low-frequency noise effect to high-frequency noise effect, and diesel fork lift truck exhaust silencer of the prior art is difficult to take into account low frequency, medium frequency and high-frequency noise reduction scope; Therefore, await improving acoustic wave filter structure further to overcome above-mentioned deficiency.
Summary of the invention
The present invention for the deficiency that prior art exists, provides a kind of noise reduction environment friendly silencer for little tonnage diesel fork lift truck, meets actual operation requirements just.
For solving the problem, the technical solution used in the present invention is as follows:
A kind of noise reduction environment friendly silencer for little tonnage diesel fork lift truck, comprise silencer cylinder, described silencer cylinder comprises inlet end and exhaust end, and the inlet end of described silencer cylinder is provided with tail gas suction tude, and the exhaust end of described silencer cylinder is provided with tail gas steam outlet pipe;
Also comprise three the partition baffle plates being arranged at described silencer cylinder, described silencer cylinder is divided into the first muffler chamber, the second muffler chamber, the 3rd muffler chamber and the 4th muffler chamber by inlet end to exhaust end by three described partition baffle plates successively, the end of described tail gas suction tude is arranged in described second muffler chamber, and the end of described tail gas steam outlet pipe is positioned at described 3rd muffler chamber;
Described first muffler chamber is communicated with by the first interpolation pipe with described second muffler chamber, described first muffler chamber is communicated with by the second interpolation pipe with described 4th muffler chamber, and described 3rd muffler chamber is communicated with by the 3rd interpolation pipe with described 4th muffler chamber.
As the improvement of technique scheme, in described tail gas steam outlet pipe, be provided with catalytic oxidizing equipment.In described tail gas steam outlet pipe, catalytic oxidizing equipment is set, can purifying exhaust air, protection of the environment.
As the improvement of technique scheme, described catalytic oxidizing equipment is positioned at described 4th muffler chamber.Described catalytic oxidizing equipment is exothermic reaction in the process that catalytic decomposition is discarded, described catalytic oxidizing equipment is arranged in the exothermic heat of reaction that described 4th muffler chamber can utilize described catalytic oxidizing equipment further, thus improves the soundproof effect of silencing apparatus further; And described catalytic oxidizing equipment is in described 4th muffler chamber, installs more firm, improve the stability of described tail gas steam outlet pipe, reduce the Oscillation Amplitude of described tail gas steam outlet pipe, effectively can extend the life-span of described tail gas steam outlet pipe.
As the improvement of technique scheme, the inlet end arranged outside of described silencer cylinder has the first mounting bracket for connection body, the exhaust end arranged outside of described silencer cylinder to have the second mounting bracket for connection body.
As the improvement of technique scheme, the sidewall between described silencer cylinder inlet end and exhaust end is double layer construction, and is filled with thermal-protective material between two-layer sidewall.Change common individual layer silencer cylinder into double-layer sound eliminator tube structure, interspace in advance and filling with insulation material between described silencer cylinder skin and internal layer sidewall; And change silencer cylinder internal structure, reduce thermal radiation thus, reduce surface temperature, increase the sound deadening capacity of silencing apparatus.
As the improvement of technique scheme, described thermal-protective material is Elastic heat insulation material, and the outer sidewall of described silencer cylinder is rigidity quality, and the internal layer sidewall of described silencer cylinder is resilient texture.When tail gas and noise import in described silencer cylinder, the internal layer sidewall of described silencer cylinder vibrates, and described Elastic heat insulation material produces damping function, thus can improve the soundproof effect of described silencer cylinder sidewall.
As the improvement of technique scheme, described first muffler chamber and described 4th silencer chamber indoor are all filled with filtration acoustical cotton.Described filtration acoustical cotton on the one hand can filter particulate emissions, makes tail gas more environmental protection; And filtration acoustical cotton has resistance noise reduction effect, can absorb the part high-frequency noise in tail gas; And due to the air inlet between described second muffler chamber and described 3rd muffler chamber contrary with noise transfer direction, described partition baffle plate between described second muffler chamber and described 3rd muffler chamber can produce reactive muffling effect, thus can eliminate part intermediate frequency, the low-frequency noise in tail gas.
Compared with prior art, implementation result of the present invention is as follows in the present invention:
A kind of noise reduction environment friendly silencer for little tonnage diesel fork lift truck of the present invention, by arranging four muffler chamber, adds silencing apparatus to low frequency, medium frequency and high-frequency noise reduction scope; And the smooth in exhaust of motor, rationally, under the prerequisite of rationally exhaust, the noise of engine component and car load can be reduced as far as possible, promote the life-span of car load, improve reliability, comfort level that car load uses.
Noise can be reduced by 1 ~ 2dB by silencing apparatus compared to routine further, and soundproof effect is better, the most reasonable to the exhaust of engine power, even if still there is good exhaust effect in the environment of high temperature, for the reliable Power output of car load is given security.
Accompanying drawing explanation
Fig. 1 is a kind of noise reduction environmental protection acoustic wave filter structure schematic diagram for little tonnage diesel fork lift truck of the present invention.
Embodiment
Below in conjunction with specific embodiments content of the present invention is described.
As shown in Figure 1, be a kind of noise reduction environmental protection acoustic wave filter structure schematic diagram for little tonnage diesel fork lift truck of the present invention.
A kind of noise reduction environment friendly silencer for little tonnage diesel fork lift truck of the present invention, comprise silencer cylinder 12, described silencer cylinder 12 comprises inlet end and exhaust end, the inlet end of described silencer cylinder 12 is provided with tail gas suction tude 9, and the exhaust end of described silencer cylinder 12 is provided with tail gas steam outlet pipe 6; The inlet end arranged outside of described silencer cylinder 12 has the first mounting bracket 10 for connection body, the exhaust end arranged outside of described silencer cylinder 12 to have the second mounting bracket 11 for connection body.Sidewall between described silencer cylinder 12 inlet end and exhaust end is double layer construction, and is filled with thermal-protective material between two-layer sidewall.Described thermal-protective material is Elastic heat insulation material, and the outer sidewall of described silencer cylinder 12 is rigidity quality, and the internal layer sidewall of described silencer cylinder 12 is resilient texture.Catalytic oxidizing equipment 13 is provided with in described tail gas steam outlet pipe 6.Described catalytic oxidizing equipment 13 is positioned at described 4th muffler chamber 1.
Also comprise three the partition baffle plates 7 being arranged at described silencer cylinder 12, described silencer cylinder 12 is divided into the first muffler chamber 5, second muffler chamber 4, the 3rd muffler chamber 14 and the 4th muffler chamber 1 by inlet end to exhaust end by three described partition baffle plates 7 successively, the end of described tail gas suction tude 9 is arranged in described second muffler chamber 4, and the end of described tail gas steam outlet pipe 6 is positioned at described 3rd muffler chamber 14;
Described first muffler chamber 5 is communicated with by the first interpolation pipe 8 with described second muffler chamber 4, described first muffler chamber 5 is communicated with by the second interpolation pipe 3 with described 4th muffler chamber 1, and described 3rd muffler chamber 14 is communicated with by the 3rd interpolation pipe 2 with described 4th muffler chamber 1.Filtration acoustical cotton is all filled with in described first muffler chamber 5 and described 4th muffler chamber 1.
When vehicle exhaust enters after described silencer cylinder 12 from described tail gas steam outlet pipe 6, first described second muffler chamber 4 is entered, described first muffler chamber 5 is entered again by described first interpolation pipe 8, described 4th muffler chamber 1 is entered again by described second interpolation pipe 3, then described 3rd muffler chamber 14 is entered by described 3rd interpolation pipe 2, and enter described tail gas steam outlet pipe 6 from the 3rd muffler chamber 14, finally discharge described a kind of noise reduction environment friendly silencer for little tonnage diesel fork lift truck.
The design of thermal-protective coating makes silencing apparatus surface temperature reduce, reduce silencing apparatus surrounding components, as the loss of motor, water tank, vehicle frame etc., and increase the sound-damping qualities of baffler, improve User working environment, the structural design of inner barrel increases baffler more effectively to low frequency, medium frequency and high-frequency noise reduction scope, thus reaches and improve baffler soundproof effect, increases sound-damping qualities.
The installation of a kind of noise reduction environment friendly silencer for little tonnage diesel fork lift truck of the present invention is identical with conventional mounting mode, the inlet end of described silencer cylinder 12 is connected with described tail gas suction tude 9, described tail gas suction tude 9 is connected with motor air outlet, two damping rubber blocks are arranged at the bottom of described silencer cylinder 12, and are connected with car body with described second mounting bracket 11 by described first mounting bracket 10 by parts such as bolt, nut, rubber pads.
The regular maintenance of a kind of noise reduction environment friendly silencer for little tonnage diesel fork lift truck of the present invention: due to motor operationally, fuel oil is not very perfect combustion, in addition also certain impurity is contained in fuel oil, therefore when the high-temp waste gas of motor eliminating is through exhaust silencer, carbon distribution will be produced on the copper core of silencing apparatus and described partition baffle plate 7, in the course of time, pile up the carbon distribution got up and will block air-flow path, exhaust resistance is increased, so identical with tradition, need periodic maintenance, by clean for the carbon cleaning in silencing apparatus.
Above content is detailed description made for the present invention in conjunction with specific embodiments, can not assert that the present invention specifically implements to be only limitted to these explanations.For those skilled in the art, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to the scope of protection of the invention.

Claims (7)

1. the noise reduction environment friendly silencer for little tonnage diesel fork lift truck, comprise silencer cylinder (12), described silencer cylinder (12) comprises inlet end and exhaust end, the inlet end of described silencer cylinder (12) is provided with tail gas suction tude (9), and the exhaust end of described silencer cylinder (12) is provided with tail gas steam outlet pipe (6);
It is characterized in that, also comprise three partitions baffle plate (7) being arranged at described silencer cylinder (12), described silencer cylinder (12) is divided into the first muffler chamber (5), the second muffler chamber (4), the 3rd muffler chamber (14) and the 4th muffler chamber (1) by inlet end to exhaust end by three described partition baffle plates (7) successively, the end of described tail gas suction tude (9) is arranged in described second muffler chamber (4), and the end of described tail gas steam outlet pipe (6) is positioned at described 3rd muffler chamber (14);
Described first muffler chamber (5) is communicated with by the first interpolation pipe (8) with described second muffler chamber (4), described first muffler chamber (5) is communicated with by the second interpolation pipe (3) with described 4th muffler chamber (1), and described 3rd muffler chamber (14) is communicated with by the 3rd interpolation pipe (2) with described 4th muffler chamber (1).
2. a kind of noise reduction environment friendly silencer for little tonnage diesel fork lift truck as claimed in claim 1, is characterized in that, be provided with catalytic oxidizing equipment (13) in described tail gas steam outlet pipe (6).
3. a kind of noise reduction environment friendly silencer for little tonnage diesel fork lift truck as claimed in claim 2, it is characterized in that, described catalytic oxidizing equipment (13) is positioned at described 4th muffler chamber (1).
4. a kind of noise reduction environment friendly silencer for little tonnage diesel fork lift truck as claimed in claim 1, it is characterized in that, the inlet end arranged outside of described silencer cylinder (12) has the first mounting bracket (10) for connection body, the exhaust end arranged outside of described silencer cylinder (12) to have the second mounting bracket (11) for connection body.
5. a kind of noise reduction environment friendly silencer for little tonnage diesel fork lift truck as claimed in claim 1, it is characterized in that, the sidewall of described silencer cylinder (12) between inlet end and exhaust end is double layer construction, and is filled with thermal-protective material between two-layer sidewall.
6. a kind of noise reduction environment friendly silencer for little tonnage diesel fork lift truck as claimed in claim 5, it is characterized in that, described thermal-protective material is Elastic heat insulation material, and the outer sidewall of described silencer cylinder (12) is rigidity quality, and the internal layer sidewall of described silencer cylinder (12) is resilient texture.
7. a kind of noise reduction environment friendly silencer for little tonnage diesel fork lift truck as claimed in claim 1, is characterized in that, be all filled with filtration acoustical cotton in described first muffler chamber (5) and described 4th muffler chamber (1).
CN201510877625.0A 2015-12-04 2015-12-04 Noise-reduction environment-friendly muffler for small-tonnage diesel fork lift truck Pending CN105332764A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106523108A (en) * 2016-12-02 2017-03-22 芜湖市元山机械制造有限公司 Silent exhaust pipe capable of easily clearing blockage
WO2020258915A1 (en) * 2019-06-26 2020-12-30 深圳市倍轻松科技股份有限公司 Air discharge noise reduction device and wearable apparatus

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2076606U (en) * 1990-05-08 1991-05-08 中国科学院大连化学物理研究所 Exhaust catalytic-purifier for internal combustion engine
CN2264251Y (en) * 1996-09-17 1997-10-08 三阳工业股份有限公司 Silencer
CN201241746Y (en) * 2008-08-21 2009-05-20 安徽江淮汽车股份有限公司 Electric impedance silencer for light truck
CN201284683Y (en) * 2008-11-10 2009-08-05 重庆迈崴机器有限公司 Purification silencer for exhaust gas of diesel engine
CN203035307U (en) * 2013-01-11 2013-07-03 郑州宇通客车股份有限公司 Integrated selective catalytic reduction (SCR) catalytic conversion muffler for diesel engine
CN203189083U (en) * 2013-03-22 2013-09-11 远勤山 Silencer
CN203742741U (en) * 2013-12-19 2014-07-30 安徽合叉叉车有限公司 Exhaust system for small-tonnage forklift
WO2014147916A1 (en) * 2013-03-21 2014-09-25 ヤンマー株式会社 Engine exhaust gas system apparatus and package-type engine power generator
CN205277536U (en) * 2015-12-04 2016-06-01 安徽合叉叉车有限公司 A environmental protection silencer of making an uproar falls for light -tonnage combustion forklifts

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2076606U (en) * 1990-05-08 1991-05-08 中国科学院大连化学物理研究所 Exhaust catalytic-purifier for internal combustion engine
CN2264251Y (en) * 1996-09-17 1997-10-08 三阳工业股份有限公司 Silencer
CN201241746Y (en) * 2008-08-21 2009-05-20 安徽江淮汽车股份有限公司 Electric impedance silencer for light truck
CN201284683Y (en) * 2008-11-10 2009-08-05 重庆迈崴机器有限公司 Purification silencer for exhaust gas of diesel engine
CN203035307U (en) * 2013-01-11 2013-07-03 郑州宇通客车股份有限公司 Integrated selective catalytic reduction (SCR) catalytic conversion muffler for diesel engine
WO2014147916A1 (en) * 2013-03-21 2014-09-25 ヤンマー株式会社 Engine exhaust gas system apparatus and package-type engine power generator
CN203189083U (en) * 2013-03-22 2013-09-11 远勤山 Silencer
CN203742741U (en) * 2013-12-19 2014-07-30 安徽合叉叉车有限公司 Exhaust system for small-tonnage forklift
CN205277536U (en) * 2015-12-04 2016-06-01 安徽合叉叉车有限公司 A environmental protection silencer of making an uproar falls for light -tonnage combustion forklifts

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106523108A (en) * 2016-12-02 2017-03-22 芜湖市元山机械制造有限公司 Silent exhaust pipe capable of easily clearing blockage
WO2020258915A1 (en) * 2019-06-26 2020-12-30 深圳市倍轻松科技股份有限公司 Air discharge noise reduction device and wearable apparatus

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Application publication date: 20160217