CN204024776U - A kind of exhaust gas post-treatment device with waste gas ejecting - Google Patents
A kind of exhaust gas post-treatment device with waste gas ejecting Download PDFInfo
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- CN204024776U CN204024776U CN201420302164.5U CN201420302164U CN204024776U CN 204024776 U CN204024776 U CN 204024776U CN 201420302164 U CN201420302164 U CN 201420302164U CN 204024776 U CN204024776 U CN 204024776U
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- waste gas
- exhaust
- exhaust gas
- treatment device
- dividing plate
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- 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
Abstract
A kind of exhaust gas post-treatment device with waste gas ejecting, be applied to diesel engine exhaust system, comprise the shell construction of sealing, be installed on exhaust gas inlet pipe, the waste gas outlet pipe on shell construction and be installed on the exhaust aftertreatment in shell construction, also comprise Venturi tube and induction tunnel, the waste gas Venturi tube of flowing through after exhaust aftertreatment is discharged by waste gas outlet pipe again, induction tunnel one end in Venturi tube, the other end connects the air filter of diesel engine; Dividing plate is installed in shell construction, and exhaust aftertreatment is fixed on dividing plate, and described exhaust aftertreatment is one or more combinations in oxidation catalyzer, reduction catalyst converter or particulate matter trap.This device can reduce discharging pollutants, the dust in the air filter of diesel engine being extracted into waste gas outlet pipe and reducing vent systems noise of diesel engine.
Description
Technical field
The utility model belongs to a kind of diesel engine exhaust after-treatment device, is specially a kind of exhaust gas post-treatment device with waste gas ejecting.
Background technique
For protection of the environment; countries in the world have been put into effect the relevant laws and regulations of controlling motor vehicle exhaust emission in succession; more and more stricter Abgasgesetz makes the emission controls by improving combustion technology of simple diesel engine be difficult to satisfy regulatory requirement, must the outer post-processing technology of dependence machine be assisted.Outside machine, aspect technical finesse, current domestic Ge great diesel engine company and car load factory owner will adopt oxidation catalyzer, reduction catalyst converter or grain catcher.Meanwhile, part diesel engine is often used in severe working environment, such as mine.These local dusts can be accumulated in air filter in a large number, need driver often to maintain air filter.Artificial maintenance is consuming time, effort, and also effect is general.Still the exhaust after treatment system exhaust aftertreatment and maintenance air filter not being combined both at home and abroad at present.
Summary of the invention
In order to overcome the deficiencies in the prior art, technical problem to be solved in the utility model is to propose a kind of exhaust gas post-treatment device with waste gas ejecting, can meet strict emission standard, can improve the maintenance period that works in the air filter in rugged environment again.
The technical solution of the utility model is; Be applied to the exhaust gas post-treatment device with waste gas ejecting of diesel engine exhaust system, comprise the shell construction of sealing, shell construction is made up of three parts, i.e. front cover, housing and rear end cover; Also comprise exhaust gas inlet pipe, the waste gas outlet pipe being installed on shell construction and be installed on the exhaust aftertreatment in shell construction; Also comprise Venturi tube and induction tunnel.The waste gas Venturi tube of flowing through after exhaust aftertreatment is discharged by waste gas outlet pipe again, induction tunnel one end in Venturi tube, the other end connects the air filter of diesel engine;
Preferably, dividing plate is installed in shell construction, exhaust aftertreatment is fixed on dividing plate; Exhaust aftertreatment is one or more combinations in oxidation catalyzer, reduction catalyst converter, grain catcher.Described oxidation catalyzer refers to by catalyzer to waste gas is carried out reduction reaction, reduces carbon monoxide in waste gas and the catalyst converter of total hydrocarbons; Described reduction catalyst converter refers to the catalyst converter that the nitrogen oxide in waste gas can be catalysed and reduced into nitrogen and other innoxious substances; Described grain catcher can reduce the particulate matter device in waste gas by catalytic reaction or filtration.
The working principle of exhaust gas post-treatment device is as follows: when engine exhaust enters after exhaust gas inlet pipe, flowed out, and all enter exhaust aftertreatment by exhaust gas inlet pipe; When waste gas streams is during through exhaust aftertreatment, one or more combinations in corresponding oxidation catalyzer, reduction catalyst converter, grain catcher can be played the effect that reduces the pollutant in waste gas, thereby meet the emission standard of strict diesel engine; Waste gas streams is crossed after exhaust aftertreatment, can directly enter waste gas outlet pipe, then the Venturi tube of flowing through, and is discharged in atmosphere, or directly enters Venturi tube and be discharged in atmosphere through waste gas outlet pipe finally by waste gas outlet pipe; When waste gas streams is during through Venturi tube, due to Venturi effect, can near the connecting tube in Venturi tube, produce negative pressure, this negative pressure can be extracted into the dust in the air filter of diesel engine in Venturi tube by induction tunnel, again along with waste gas together combustion gas outer pipe, play the effect that reduces the dust in air filter, improve air filter maintenance period; Because exhaust gas inlet pipe, exhaust aftertreatment, Venturi tube and waste gas outlet pipe have certain low noise function of falling, so exhaust after treatment system can play the effect that reduces diesel engine exhaust noise.
This installs outstanding feature and is: from exhaust gas flow direction, the upstream of exhaust aftertreatment in Venturi tube, that is to say that waste gas first passes through exhaust aftertreatment, pass through again Venturi tube, therefore, exhaust gas post-treatment device can play and both reduce diesel engine emissions pollutant, again the dust in the air filter of diesel engine is extracted in Venturi tube and is discharged to the effect in atmosphere; If the downstream of exhaust aftertreatment in Venturi tube, the dust that Venturi tube is taken out is when through exhaust aftertreatment, and dust easily stops up exhaust aftertreatment, thereby causes exhaust aftertreatment to lose efficacy.
Preferably, the conical pipe that the diminishing conical pipe of caliber increases gradually than caliber is short; The diminishing conical pipe of described caliber connects by connecting tube the conical pipe that described footpath under the overall leadership increases gradually; From exhaust gas flow direction, the diminishing conical pipe of described caliber is positioned at the upstream of the conical pipe that caliber increases gradually.
Preferably, shell construction is divided into several chambeies by dividing plate, the outside in the chamber that described exhaust gas inlet pipe forms from housing, front cover and rear end cover extends internally through described housing or described front cover, and gas is discharged in chamber, then the gas in chamber is more all through exhaust aftertreatment and enter next chamber, then enters described Venturi tube and described waste gas outlet pipe; The inside in the chamber that described waste gas outlet pipe forms from described housing, front cover and rear end cover extends to the outside in chamber through described housing or described rear end cover; The external frame of described shell construction can be arranged needs according to chassis, is designed to square or circular.
Preferably, described exhaust aftertreatment is fixed in described housing by liner, exhaust aftertreatment reel and dividing plate acting in conjunction, or be fixed on described housing by liner and the acting in conjunction of exhaust aftertreatment reel, or be fixed on described housing by liner, the selection of means of fixation depends primarily on the material of chassis arrangement space and liner; All engine exhausts all can flow through exhaust aftertreatment; Described exhaust aftertreatment can have a carrier or multiple carrier.
Further, in the time that exhaust aftertreatment is fixed in described housing by liner, exhaust aftertreatment reel and dividing plate acting in conjunction, the quantity of described dividing plate has one or several; From exhaust gas flow direction, the dividing plate that is positioned at rear end can only have a hole, for fixed-bearing, exhaust aftertreatment reel and exhaust aftertreatment, be positioned at the dividing plate of front end, if can there be individual hole, a hole is for after fixed-bearing, exhaust aftertreatment reel and exhaust, and other hole is used for making waste gas to flow through more equably exhaust aftertreatment.In the time that the quantity of dividing plate is two, shell construction is divided into three cavitys by the first dividing plate and second partition: the first cavity, the second cavity and the 3rd cavity, described exhaust aftertreatment sealing is fixed on the first dividing plate and second partition, and its exhaust gas entrance is positioned at the first cavity, waste gas outlet is positioned at the 3rd cavity; Exhaust gas inlet pipe is entered shell construction inside, is entered the second cavity through the first cavity by front cover, and exhaust gas inlet pipe has perforation so that waste gas enters the second cavity in the second cavity part; Taking exhaust gas flow direction as benchmark, the first dividing plate that is positioned at front end has multiple holes, for making waste gas enter the first cavity from the second cavity.
Preferably, described front cover can be individual layer or bilayer, if double-deck, in the middle of bilayer, can increase glass fibre and reduce noise; Described rear end cover can be individual layer or bilayer, if double-deck, in the middle of bilayer, can increase glass fibre and reduce noise.
Preferably, one end of described exhaust gas inlet pipe is open, to allow waste gas to enter in described exhaust gas inlet pipe; Be positioned at the inside in the chamber that described housing, front cover and rear end cover form exhaust gas inlet pipe end or (with) porose to allow waste gas to enter the inside in chamber on tube wall, and flow to discharging processor; Described exhaust gas inlet pipe enters the inside in the chamber being made up of described housing, front cover and rear end cover through described front cover or the described housing of process, if exhaust gas inlet pipe is to enter inside, chamber through front cover, the exhaust gas inlet pipe that is positioned at the inside in chamber can be by supporting on the dividing plate of inside, chamber, to strengthen the stability of exhaust gas inlet pipe.
Preferably, be positioned at the inside in the chamber that described housing, front cover and rear end cover form waste gas outlet pipe end or (with) porose to allow waste gas to enter outer pipe on tube wall; It is open that described waste gas outlet pipe has one end at least, to allow waste gas from entering waste gas outlet tube side-by-side to atmosphere.
Preferably, described Venturi tube can be positioned at the inside in the chamber that described housing, front cover and rear end cover form, or is positioned at the inside of described waste gas outlet pipe.
Brief description of the drawings
Fig. 1,2,3,4,5,6,7 and 8 is fundamental diagrams of the exhaust gas post-treatment device that eight kinds of structures of the utility model are slightly different;
Fig. 9 and Figure 10 are three-dimensional structure diagrams of the present utility model;
Figure 11 is sectional drawing of the present utility model;
Figure 12,13 and 14 is the utility model three-dimensional structure diagrams with internal structure;
Figure 15 is the sectional drawing of the utility model induction tunnel;
Figure 16 is the sectional drawing that the utility model is positioned at the waste gas outlet pipe of enclosure interior.
In figure: 1-exhaust gas inlet pipe; 2-inlet pipe connection; 3-suction tude; 4-air inlet perforated pipe; 5-housing; 6-front cover; 7-dividing plate; 8-dividing plate; 9-rear end cover; 10-exhaust gas post-treatment device; 11-exhaust aftertreatment; 12 exhaust aftertreatment; 13-liner; 14-liner; 15-exhaust aftertreatment reel; 16-waste gas outlet pipe; 17-waste gas outlet perforated pipe; 18-flange; 19-waste gas outlet tail pipe; 20-induction tunnel; 21-Venturi tube; 22-conical pipe; 23-connecting tube; 24-conical pipe; The dust entrance of 25-air filter.
Embodiment
For making the purpose of this utility model, technological scheme and advantage clearer, below in conjunction with accompanying drawing, the utility model mode of execution is described in further detail.
Fig. 1 shows fundamental diagram of the present utility model.The difference of arranging according to space, car load chassis, also there will be the slightly different fundamental diagram as shown in Fig. 2-8.
Three major functions of the exhaust gas post-treatment device that the utility model provides are: reduce discharging pollutants, the dust in the air filter of diesel engine being extracted into waste gas outlet pipe and reducing vent systems noise of diesel engine.The working principle of exhaust gas post-treatment device of the present utility model is such: when engine exhaust enters after exhaust gas inlet pipe, flowed out, and all enter exhaust aftertreatment by exhaust gas inlet pipe; When waste gas streams is during through exhaust aftertreatment, oxidation catalyzer in exhaust aftertreatment or (with) reduction catalyst converter or (with) grain catcher can play the effect that reduces the pollutant in waste gas, thereby meet the emission standard of strict diesel engine; Waste gas streams is crossed after exhaust aftertreatment, can directly enter waste gas outlet pipe, then the Venturi tube of flowing through, and is discharged in atmosphere, or directly enters Venturi tube and be discharged in atmosphere through waste gas outlet pipe finally by waste gas outlet pipe; When waste gas streams is during through Venturi tube, due to Venturi effect, can near the connecting tube in Venturi tube, produce negative pressure, this negative pressure can be extracted into the dust in the air filter of diesel engine in Venturi tube by induction tunnel, again along with waste gas together combustion gas outer pipe, play the effect that reduces the dust in air filter, improve air filter maintenance period; Because exhaust gas inlet pipe, exhaust aftertreatment, Venturi tube and waste gas outlet pipe have certain low noise function of falling, so exhaust after treatment system can play the effect that reduces diesel engine exhaust noise.
Key character of the present utility model is: from exhaust gas flow direction, the upstream of exhaust aftertreatment in Venturi tube, that is to say that waste gas first passes through exhaust aftertreatment, pass through again Venturi tube, only in this way exhaust gas post-treatment device just can play and both reduce diesel engine emissions pollutant, again the dust in the air filter of diesel engine is extracted in Venturi tube and is discharged to the effect in atmosphere; If the downstream of exhaust aftertreatment in Venturi tube, the dust that Venturi tube is taken out is when through exhaust aftertreatment, and dust easily stops up exhaust aftertreatment, thereby causes exhaust aftertreatment to lose efficacy.
Fig. 9-14 show the example exhaust gas post-treatment device 10 of Fig. 1 working principle.Exhaust gas post-treatment device comprises housing 5, exhaust gas inlet pipe 1, air inlet perforated pipe 4, front cover 6, dividing plate 7, the dividing plate 8 with inner space; Rear end cover 9, exhaust aftertreatment 11, exhaust aftertreatment 12, liner 13, liner 14, exhaust aftertreatment reel 15, waste gas outlet pipe 16, induction tunnel 20, Venturi tube 21.Exhaust gas inlet pipe 1 comprises inlet pipe connection 2 and suction tude 3.Waste gas outlet pipe 16 comprises waste gas outlet perforated pipe 17, flange 18 and waste gas outlet tail pipe 19.Venturi tube 21 comprises the conical pipe 24 that conical pipe 22, connecting tube 23 and caliber that caliber reduces gradually increase gradually.On induction tunnel 20 pipes, there is the dust entrance 25 of air filter.
Exhaust aftertreatment 11 and exhaust aftertreatment 12 can be oxidation catalyzer (be sometimes called for short " DOC "), or (with) reduction catalyst converter (being sometimes called for short " SCR "), or (with) particulate matter trap (being sometimes called for short " DPF "), concrete composition, the temperature etc. of the waste gas that the concrete material of exhaust aftertreatment 12 is discharged according to motor determined.Liner 13 and liner 14 are nonmetallic.Except exhaust aftertreatment 12, liner 13 and liner 14, other component of exhaust after treatment system 10 are all stainless.
Front cover 6, dividing plate 7, dividing plate 8 and rear end cover 9 are fixed on housing 5.Front cover 6 is to weld together completely with the front end of housing 5, and rear end cover 9 is together with the welding completely of the rear end of housing 5.Front cover 6 and rear end cover 9 can be made double-deckly according to falling low noise needs, and double-deck centre can add glass fibre and reduce by a larger margin noise; On front cover 6 and rear end cover 9, can add as required difform muscle, to improve rigidity, reduce vibration, reduce noise.Dividing plate 7 and dividing plate 8 are positioned at the inside of housing 5.Dividing plate 8 is to weld together completely with housing 5, and exhaust aftertreatment reel 15 welds together completely with dividing plate 8, can ensure that so whole waste gas all will pass through exhaust aftertreatment 11 and exhaust aftertreatment 12.Dividing plate 7 rely on exhaust aftertreatment reel 15 be weldingly fixed on housing 5 inside.Housing 5 inside are divided into three chambers by dividing plate 7 and dividing plate 8: the first chamber 30a, the second chamber 30b and the 3rd chamber 30c.On dividing plate 7, there are several holes, flow between the first chamber and the second chamber so that obtain air-flow, and air-flow evenly pass through from exhaust aftertreatment.On dividing plate 8, only has a hole, in order to assemble exhaust aftertreatment reel 15.
Exhaust aftertreatment 11 and exhaust aftertreatment 12 are fixed in exhaust aftertreatment reprocessing reel 15 by liner 13 and liner 14 respectively, in the time of engine operation, waste gas streams is through exhaust aftertreatment 11 and 12, liner 13 and liner 14 expanded by heating, produce radial force, exhaust aftertreatment 11 and exhaust aftertreatment 12 tightly can be fixed in exhaust aftertreatment reprocessing reel 15.
Exhaust gas inlet pipe 1 is for the outlet pipe of connecting engine.Waste gas from motor successively passes through inlet pipe connection 2 and suction tude 3, then enters air inlet perforated pipe 4, then enters the second chamber 30b by the some hole 4a on the tube wall of air inlet perforated pipe 4.
Waste gas outlet perforated pipe 17 and flange 18 weld together, and waste gas outlet perforated pipe 17 and waste gas outlet tail pipe 19 weld together completely, avoid weld to have gas leakage.Flange 18 welds together with housing 5, to improve stability.Waste gas outlet perforated pipe 17 extends to chamber in the 3rd chamber 30c.
Venturi tube 21 is positioned at waste gas outlet tail pipe 19, and Venturi tube 21 welds together with waste gas outlet tail pipe 19.From exhaust gas flow direction, the conical pipe 22 that the caliber in Venturi tube 21 reduces is gradually positioned at the upstream of the conical pipe 24 that caliber increases gradually.One end of induction tunnel 20 is positioned near connecting tube 23, and the other end is positioned at the outside of waste gas outlet perforated pipe 17, is used for connecting air filter.
With the example of Fig. 1 working principle, actual working procedure is described below: in the time of engine start, waste gas is by connecting tube 2 and suction tude 3, then enter air inlet perforated pipe 4, enter the second chamber 30b by the some hole 4a on the tube wall of air inlet perforated pipe 4 again, then waste gas enters the first chamber 30a through several holes 7a, 7b, 7c and 7d on dividing plate 7 again; Enter the waste gas of the first chamber 30a successively through exhaust aftertreatment 11 and exhaust aftertreatment 12, then enter the 3rd chamber 30c; The waste gas that enters the 3rd chamber enters waste gas outlet perforated pipe 17 through the hole 17a on waste gas outlet perforated pipe 17, and flows to Venturi tube 21; When waste gas streams is during through Venturi tube 21, due to Venturi effect, at connecting tube, 23 places can produce negative pressure, this negative pressure can be extracted into the dust in diesel engine air filter in Venturi tube 21 through the dust entrance 25 of air filter, and dust can be discharged in atmosphere through waste gas outlet tail pipe 19 together along with waste gas.
Experimental result shows, the utility model, in meeting stricter emission regulation demands, can obviously improve the maintenance period of the air filter of diesel engine, and laboratory data is as following table.
To sum up, the utility model encyclopaedizes by the above embodiments.But the utility model is not intended to be defined in above-described embodiment.In the situation that not departing from spirit and scope of the present utility model, exhaust after treatment system of the present utility model can have many different distortion.For example can on housing, increase block temperature sensor, or (with) NOx sensor seat, or (with) increase pressure transducer seat etc.
Above-mentioned the utility model embodiment sequence number, just to describing, does not represent embodiment's quality.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (12)
1. the exhaust gas post-treatment device with waste gas ejecting, is applied to diesel engine exhaust system, comprises the shell construction of sealing, and shell construction is made up of three parts, i.e. front cover, housing and rear end cover; Exhaust gas post-treatment device also comprises exhaust gas inlet pipe, the waste gas outlet pipe being installed in shell construction and is installed on the exhaust aftertreatment in shell construction, it is characterized in that: exhaust gas post-treatment device also comprises Venturi tube and induction tunnel, the waste gas Venturi tube of flowing through after exhaust aftertreatment is discharged by waste gas outlet pipe again, described induction tunnel one end in Venturi tube, the other end connects the air filter of diesel engine.
2. a kind of exhaust gas post-treatment device with waste gas ejecting as claimed in claim 1, is characterized in that: Venturi tube is made up of three parts, is respectively the conical pipe that the diminishing conical pipe of caliber, connecting tube and caliber increase gradually; The conical pipe that described caliber increases is gradually connected with waste gas outlet pipe; One end of described induction tunnel is positioned at Venturi tube, also close connecting tube place, and the other end is positioned at shell construction outside.
3. a kind of exhaust gas post-treatment device with waste gas ejecting as claimed in claim 2, is characterized in that: the conical pipe that the diminishing conical pipe of described caliber increases gradually than described caliber is short; The diminishing conical pipe of described caliber connects by connecting tube the conical pipe that described footpath under the overall leadership increases gradually; The conical pipe that waste gas first increases by caliber more gradually by the diminishing conical pipe of caliber.
4. a kind of exhaust gas post-treatment device with waste gas ejecting as claimed in claim 1, it is characterized in that: in described shell construction, dividing plate is installed, exhaust aftertreatment is fixed on dividing plate, and described exhaust aftertreatment is one or more combinations in oxidation catalyzer, reduction catalyst converter or grain catcher.
5. a kind of exhaust gas post-treatment device with waste gas ejecting as claimed in claim 4, is characterized in that: described oxidation catalyzer refers to by catalyzer to waste gas is carried out reduction reaction, reduces carbon monoxide in waste gas and the catalyst converter of total hydrocarbons; Described reduction catalyst converter refers to the catalyst converter that the nitrogen oxide in waste gas can be catalysed and reduced into nitrogen and other innoxious substances; Described grain catcher can reduce the particulate matter device in waste gas by catalytic reaction or filtration.
6. a kind of exhaust gas post-treatment device with waste gas ejecting as claimed in claim 1 or 2, is characterized in that: the cross section of shell construction external frame is square or circular.
7. a kind of exhaust gas post-treatment device with waste gas ejecting as claimed in claim 1, it is characterized in that: described exhaust aftertreatment is fixed in housing jointly by liner, exhaust aftertreatment reel and dividing plate, or be jointly fixed in housing by liner and exhaust aftertreatment reel, or be fixed in housing by liner, the material of chassis arrangement space and liner is depended in the selection of above-mentioned any means of fixation.
8. a kind of exhaust gas post-treatment device with waste gas ejecting as claimed in claim 7, is characterized in that: in the time that waste gas treatment mechanism is fixed in described housing by liner, exhaust aftertreatment reel and dividing plate acting in conjunction, the quantity of described dividing plate has one or more.
9. a kind of exhaust gas post-treatment device with waste gas ejecting as claimed in claim 8, it is characterized in that: in the time that the quantity of dividing plate is two, shell construction is divided into three cavitys by the first dividing plate and second partition: the first cavity, the second cavity and the 3rd cavity, described exhaust aftertreatment sealing is fixed on the first dividing plate and second partition, and its exhaust gas entrance is positioned at the first cavity, waste gas outlet is positioned at the 3rd cavity; Exhaust gas inlet pipe is entered shell construction inside, is entered the second cavity through the first cavity by front cover, and exhaust gas inlet pipe has perforation so that waste gas enters the second cavity in the second cavity part; Taking exhaust gas flow direction as benchmark, the first dividing plate that is positioned at front end has multiple holes, for making waste gas enter the first cavity from the second cavity.
10. a kind of exhaust gas post-treatment device with waste gas ejecting as claimed in claim 1, is characterized in that: described front cover is that individual layer or bilayer, rear end cover are individual layer or bilayer, and stiffening rib is all set on front cover and rear end cover.
11. a kind of exhaust gas post-treatment devices with waste gas ejecting as claimed in claim 10, is characterized in that: when described front cover and rear end cover are double-deck, low noise glass fibre falls in double-deck middle increasing.
12. a kind of exhaust gas post-treatment devices with waste gas ejecting as claimed in claim 1, is characterized in that: described Venturi tube is positioned at shell construction inside, or are positioned at waste gas outlet pipe inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420302164.5U CN204024776U (en) | 2014-06-09 | 2014-06-09 | A kind of exhaust gas post-treatment device with waste gas ejecting |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420302164.5U CN204024776U (en) | 2014-06-09 | 2014-06-09 | A kind of exhaust gas post-treatment device with waste gas ejecting |
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| Publication Number | Publication Date |
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| CN204024776U true CN204024776U (en) | 2014-12-17 |
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| CN201420302164.5U Expired - Fee Related CN204024776U (en) | 2014-06-09 | 2014-06-09 | A kind of exhaust gas post-treatment device with waste gas ejecting |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109322726A (en) * | 2018-10-31 | 2019-02-12 | 扬州工业职业技术学院 | Exhaust gas purification and noise elimination set composite |
-
2014
- 2014-06-09 CN CN201420302164.5U patent/CN204024776U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109322726A (en) * | 2018-10-31 | 2019-02-12 | 扬州工业职业技术学院 | Exhaust gas purification and noise elimination set composite |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180119 Address after: Room 8422, room No. 3, No. 3, Xijing Road, Badachu high tech park, Shijingshan District, Beijing Patentee after: Tak Rongzhi (Beijing) Environmental Protection Technology Research Institute Address before: No. 2, building 1712, Fengtai District, Beijing, Beijing Patentee before: Chen Qingdong |
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| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141217 Termination date: 20200609 |
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| CF01 | Termination of patent right due to non-payment of annual fee |