CN206769988U - A kind of exhaust purifier of diesel engine - Google Patents
A kind of exhaust purifier of diesel engine Download PDFInfo
- Publication number
- CN206769988U CN206769988U CN201720304736.7U CN201720304736U CN206769988U CN 206769988 U CN206769988 U CN 206769988U CN 201720304736 U CN201720304736 U CN 201720304736U CN 206769988 U CN206769988 U CN 206769988U
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- Prior art keywords
- housing
- baffle
- diesel engine
- cylinder
- coarse filtration
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- Exhaust Gas After Treatment (AREA)
Abstract
It the utility model is related to automobile exhaust purification equipment technical field, a kind of exhaust purifier of diesel engine is provided, including housing, cavity interior edge air inlet to the gas outlet direction of housing is disposed with particulate filter arrangement, reproducibility washcoat, first baffle, oxidative activation coating and second baffle；Particulate filter arrangement includes coarse filtration cylinder and fine filtering cylinder, and one end of coarse filtration cylinder connects setting with air inlet, and the cavity interior sealing that the other end extends to housing is set, and fine filtering cylinder cladding coarse filtration cylinder is set, and active carbon layer is filled between coarse filtration cylinder and fine filtering cylinder；First baffle and second baffle offer some through holes；The housing that first plate washer and oxidative activation apply interlayer is set in venturi-type, and offers the oxygen supply narrow pipe that the cavity of housing is in communication with the outside.The utility model is simple in construction, and cost is low, realizes the stage purification of diesel engine vent gas, and purification efficiency is high, and fault rate greatly reduces, service life length.
Description
Technical field
It the utility model is related to automobile exhaust purification equipment technical field, and in particular to a kind of exhaust purifier of diesel engine.
Background technology
Diesel engine refers to obtain exergonic engine with burning diesel oil, and it is excellent to have that moment of torsion is big, economic performance is good etc.
Point, but simultaneously, containing substantial amounts of particle, HC, CO, NOx etc. in the tail gas of diesel engine discharge, be directly discharged in air to cause
The serious pollution of environment, the problem of exhaust emissions of diesel engine is always Vehicle Engineering and environmental project of interest, therefore, in bavin
It is significant that exhaust purifier is set up in oil machine exhaust emissions.
Large-sized diesel machine equipment of the prior art, bavin is realized using DPF diesel particulate filters and SCR system etc. more
The tail gas clean-up of oil machine and discharge, but DPF technologies are relative complex, and chemical reaction temperature requires high, and performance is not sufficiently stable, in addition,
DPF requires that fuel oil sulfur content is less than 50PPM；With the increase of working time, filter core internal particle thing（PM）Increase, not only influences
Contact of the waste gas with catalyst so that the purification efficiency of off-gas oxidizing reduction reaction reduces, and waste gas purification is not thorough, the row of also resulting in
Gas back pressure raises, and will influence the dynamic property of diesel engine, removes the regeneration that the PM on filter core is referred to as DPF, but DPF's is difficult for regeneration
Degree is big, it is difficult to realizes, meanwhile, DPF diesel particulate filters and SCR system are complicated, and manufacture difficulty is big, and price is very high
It is expensive, it is unsuitable for the use of farm machinery etc., it is necessary to design a kind of tail mechanical suitable for farm machinery and miniature diesel
Gas cleaning equipment.
The content of the invention
For in the prior art the defects of, the utility model provides a kind of exhaust purifier of diesel engine, simple in construction, cost
It is low, the stage purification of diesel engine vent gas is realized, purification efficiency is high, service life length, disclosure satisfy that diesel engine vent gas purification
Use demand.
The utility model provides a kind of exhaust purifier of diesel engine, including housing, and the housing is offered for tail gas stream
Logical air inlet and gas outlet, cavity interior edge air inlet to the gas outlet direction of the housing are disposed with particle filtering dress
Put, reproducibility washcoat, first baffle, oxidative activation coating and second baffle；
The particulate filter arrangement includes coarse filtration cylinder and fine filtering cylinder, and one end of the coarse filtration cylinder connects with the air inlet to be set
Put, the cavity interior sealing that the other end extends to the housing is set, and the fine filtering cylinder coats the coarse filtration cylinder and set, and described thick
Active carbon layer is filled between filter cylinder and the fine filtering cylinder；
The first baffle and the second baffle offer some through holes；
The housing that first plate washer and the oxidative activation apply interlayer is set in venturi-type, and is offered institute
State the oxygen supply narrow pipe that the cavity of housing is in communication with the outside.
As an improvement scheme, the openend of the coarse filtration cylinder and the fine filtering cylinder is fixedly connected with mounting ring
On, the mounting ring and the air inlet offer the screw thread being engaged, and the mounting ring is torn open using screw thread and the air inlet
Unload formula installation.
As an improvement scheme, the reproducibility washcoat and the oxidative activation coating are using honeycomb gold
Belong to carrier, the metal oxide shell for catalyst Dispersed precipitate is coated with the honeycomb carrier.
As an improvement scheme, the metal oxide shell thickness degree is between 20-85um.
As an improvement scheme, the first baffle and the second baffle by the way of welding with the shell
The inwall of body is fixedly connected.
As an improvement scheme, the honeycomb hole of some through holes and honeycomb carrier is staggered setting, described the
It is provided between one baffle plate and the reproducibility washcoat between the second baffle and the oxidative activation coating
Gap.
As an improvement scheme, the outer wall that the oxygen supply narrow pipe attaches the housing is set, and quantity is 1-3 roots.
As an improvement scheme, the air inlet and the gas outlet are tubaeform, and horn mouth is oppositely arranged.
Due to using above technical scheme, the utility model has the advantages that：
Particulate filter arrangement that the cavity interior edge air inlet of housing is disposed with to gas outlet direction, reproducibility activation apply
Layer, first baffle, oxidative activation coating and second baffle, based on above structure, the tail gas of diesel engine discharge is from air inlet
Into, the filtering through particulate filter arrangement, under the particle contained in tail gas is filtered, by particulate filter arrangement filtering without
The exhaust gas flow direction reproducibility washcoat of grain, the nitrogen oxides in tail gas is first broken down into nitrogen and oxygen, when tail gas enters one
When step passes through oxidative activation coating, the carbon monoxide and hydrocarbon that contain in tail gas are further oxided into carbon dioxide
And water, now previous stage also contribute to the progress of such oxidation reaction through oxygen caused by reduction decomposition, tail gas is by above-mentioned
Order is cleaned successively, and the tail gas for meeting discharge standard after purification is discharged from gas outlet；In addition, set using above-mentioned stage purification
The structure put, avoid particulate matter in tail gas（PM）It is adsorbed onto on the component after particulate filter arrangement, will not be to tail gas with urging
The haptoreaction of agent impacts, and first reduces the purification order of rear oxidation so that can be to caused by reduction during oxidation
Circulating oxygen utilizes, and beneficial to the progress of oxidation reaction, so as to substantially increase purification efficiency and depuration quality, substantially reduces failure
Incidence, extend the service life of the exhaust purifier.
The particle filtering filled with active carbon layer between coarse filtration cylinder, and coarse filtration cylinder and fine filtering cylinder is coated using fine filtering cylinder to fill
Put, tail gas enters from air inlet, and the particle contained in tail gas can be realized to containing in tail gas when by particulate filter arrangement
The level filtering of grain graininess from big to small, filter efficiency is high, is substantially free of in the tail gas after particulate filter arrangement filters
Grain, effectively carry out providing guaranteed reliability for subsequent purification flow；Using the structure of filter cylinder, filtering surface is considerably increased
Area, improve filter efficiency.
The openend of coarse filtration cylinder and fine filtering cylinder is fixedly connected with mounting ring, and mounting ring is dismantled using screw thread and air inlet
The structure of formula installation, can be convenient by particle mistake periodically or when filtering function reduces after particulate filter arrangement works one end time
Cleaned and changed under filter device dismounting so that the filtering function of particulate filter arrangement is guaranteed, it is ensured that in tail gas
The high efficiency filter of grain.
First baffle and second baffle are fixedly connected by the way of welding with the inwall of housing, and are offered some
It is staggered with the honeycomb hole of honeycomb carrier and through hole is set, between first baffle and reproducibility washcoat and second baffle and oxygen
Gap is provided between the property changed washcoat；Based on above structure, using the fixed form of welding, fixed form is simple and firm
Gu some and honeycomb carrier honeycomb hole offered, which is staggered, sets through hole, and first baffle applies with reproducibility activation
The gap being provided between layer between second baffle and oxidative activation coating, when the honeycomb of tail gas cellular autofluorescence metallic carrier
When being flowed out in hole, it can impact on baffle plate, baffle plate plays a part of buffering and bounce-back to air-flow, and partial tail gas can recoil back activity
Coating, extend holdup time of the tail gas in active coating so that tail gas clean-up is more thorough, from the process of exhaust outlet discharge
The tail-gas quality of purification is higher.
The housing that first plate washer and oxidative activation apply interlayer is set in venturi-type, and is offered the cavity of housing
The oxygen supply narrow pipe being in communication with the outside, the outer wall that oxygen supply narrow pipe attaches housing are set；Improved based on more than, tail gas stream flow through venturi
Formula set shell section when, flow velocity accelerate, and pressure reduce, by provided with oxygen supply narrow pipe can automatically by the external world air suction
Enter, when oxygen caused by reduction phase is insufficient for the demand of oxidation stage, the air through supplying oxygen narrow pipe suction can be oxygen
The change stage provides purification demand so that depuration quality is significantly improved, in addition, what the outer wall that oxygen supply narrow pipe attaches housing was set
Structure, realized using the heat of housing to sucking preheating of air so that the temperature of the air of suction meets oxidation stage
Demand, provided safeguard for the quality of oxidation stage.
Reproducibility washcoat and oxidative activation coating use honeycomb carrier, are coated with honeycomb carrier
For the metal oxide shell of catalyst Dispersed precipitate；Using honeycomb carrier, wall thickness is only the 1/4 of ceramic monolith, thus
Exhaust resistance can be substantially reduced, while make it that catalyst carrier minimizes, in addition, the thermal capacity of metallic carrier is small,
Its pre- good in thermal property, be advantageous to the implementation that electronics thermocatalyst realizes HC zero-emission measure, also thermal adaptability is good in addition
The advantages that；Using coated with the metal oxide shell for catalyst Dispersed precipitate, the effect of surface of stability product can be achieved, simultaneously
With making the spread of catalyst particles keep stable, avoid merging, increase, make activity impaired.
Air inlet and gas outlet are tubaeform, and horn mouth is oppositely arranged so that the cross section of exhaust purifier housing
Area increases, and beneficial to each purification component in the setting in housing hollow, guarantee is provided for the raising of purification efficiency.
In summary, the exhaust purifier overall structure is simple, and cost is low, realizes the stage purification of diesel engine vent gas,
Purification efficiency is high, and fault rate greatly reduces, and service life length, disclosure satisfy that the use demand of diesel engine vent gas purification.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art.In all of the figs, similar element
Or part is typically identified by similar reference.In accompanying drawing, each element or part might not be drawn according to the ratio of reality.
Fig. 1 is structural representation of the present utility model；
Fig. 2 is dimensional structure diagram of the present utility model；
Fig. 3 is the structural representation of the utility model particulate filter arrangement；
Reference：1- housings；2- air inlets；3- gas outlets；4- reproducibility washcoats；5- first baffles；6- is aoxidized
Property washcoat；7- second baffles；8- coarse filtration cylinders；9- fine filtering cylinders；10- active carbon layers；11- supplies oxygen narrow pipe；12- mounting rings；13-
Through hole.
Embodiment
The embodiment of technical solution of the present invention is described in detail below in conjunction with accompanying drawing.Following examples are only used for
Clearly illustrate technical scheme, therefore be only used as example, and the protection model of the present invention can not be limited with this
Enclose.
As shown in Figure 1 to Figure 3, the utility model provides a kind of exhaust purifier of diesel engine, including housing 1, and housing 1 is opened
Set gradually provided with the air inlet 2 for tail gas circulation and gas outlet 3, cavity interior edge air inlet 2 to the direction of gas outlet 3 of housing 1
There are particulate filter arrangement, reproducibility washcoat 4, first baffle 5, oxidative activation coating 6 and second baffle 7；Based on
Upper structure, the tail gas of diesel engine discharge enter from air inlet 2, the filtering through particulate filter arrangement, the particle that will contain in tail gas
Under filter, the exhaust gas flow direction reproducibility washcoat 4 without particle that is filtered by particulate filter arrangement, the nitrogen oxides in tail gas
Be first broken down into nitrogen and oxygen, when tail gas further by oxidative activation coating 6 when, the carbon monoxide that contains in tail gas
Be further oxided into carbon dioxide and water with hydrocarbon, now previous stage also helped through oxygen caused by reduction decomposition
In the progress of such oxidation reaction, tail gas is cleaned successively by said sequence, and the tail gas for meeting discharge standard after purification is certainly
Discharge gas outlet 3；In addition, the structure set using above-mentioned stage purification, avoids particulate matter in tail gas（PM）It is adsorbed onto particle
On component after filter, the haptoreaction of tail gas and catalyst will not be impacted, and first reduce the net of rear oxidation
Change order so that circulating oxygen caused by reduction can be utilized during oxidation, beneficial to the progress of oxidation reaction, so as to carry significantly
High purification efficiency and depuration quality, substantially reduce rate of breakdown, extend the service life of the exhaust purifier.
Particulate filter arrangement includes coarse filtration cylinder 8 and fine filtering cylinder 9, and one end of coarse filtration cylinder 8 connects setting with air inlet 2, another
The cavity interior sealing that end extends to housing 1 is set, and fine filtering cylinder 9 coats coarse filtration cylinder 8 and set, and is filled between coarse filtration cylinder 8 and fine filtering cylinder 9
Active layer of charcoal 10；Coarse filtration cylinder 8 is coated using fine filtering cylinder 9, and active carbon layer 10 is filled between coarse filtration cylinder 8 and fine filtering cylinder 9
Particulate filter arrangement, tail gas enter from air inlet 2, and the particle contained in tail gas can be realized pair when by particulate filter arrangement
The level filtering of the grain graininess contained in tail gas from big to small, filter efficiency is high, the tail gas after particulate filter arrangement filters
In be substantially free of particle, for subsequent purification flow effectively carry out providing guaranteed reliability；Using the structure of filter cylinder, increase
Add the area of filtering surface, improve filter efficiency.
For convenience of the periodic cleaning and replacing of particulate filter arrangement, in the present embodiment, the opening of coarse filtration cylinder 8 and fine filtering cylinder 9
End is fixedly connected with mounting ring 12, and mounting ring 12 and air inlet 2 offer the screw thread being engaged, and mounting ring 12 utilizes screw thread
Installed with the detachable of air inlet 2；The openend of coarse filtration cylinder 8 and fine filtering cylinder 9 is fixedly connected with mounting ring 12, the profit of mounting ring 12
The structure installed with screw thread and the detachable of air inlet 2, can periodically or after particulate filter arrangement works one end time filtering function
During reduction, convenient dismantle down particulate filter arrangement is cleaned and changed so that the filtering function of particulate filter arrangement obtains
Ensure, it is ensured that to the high efficiency filter of particle in tail gas.
In the present embodiment, first baffle 5 and second baffle 7 offer some through holes 13, first baffle 5 and second baffle
7 are fixedly connected by the way of welding with the inwall of housing 1, and the honeycomb hole of some through holes 13 and honeycomb carrier, which is staggered, to be set
Put, between being provided between first baffle 5 and reproducibility washcoat 4 between second baffle 7 and oxidative activation coating 6
Gap；Based on above structure, using the fixed form of welding, fixed form is simple and firm, some and honeycomb offered
The honeycomb hole of carrier is staggered between setting through hole 13, and first baffle 5 and reproducibility washcoat 4 and second baffle 7 and oxygen
The gap being provided between the property changed washcoat 6, when being flowed out in the honeycomb hole of tail gas cellular autofluorescence metallic carrier, can be impacted
On baffle plate, baffle plate plays a part of buffering and bounce-back to air-flow, and partial tail gas can recoil back active coating, extend tail gas in work
Property coating in holdup time so that tail gas clean-up is more thorough, from exhaust outlet discharge by purification tail-gas quality it is higher.
To ensure the exhaust purifier oxidation stage to the sufficiently cleaned up of tail gas, in the present embodiment, the first plate washer 5 and oxidation
Property washcoat 6 between housing 1 set in venturi-type, and it is narrow to offer the oxygen supply that the cavity of housing 1 is in communication with the outside
Pipe 11, the outer wall that oxygen supply narrow pipe 11 attaches housing 1 is set, and quantity is 1-3 roots, in the present embodiment, through test of many times, using confession
The quantity of oxygen narrow pipe 11 is 2, and clean-up effect is optimal；Improved based on more than, 1 section of the housing that tail gas stream flow through venturi formula is set
When, flow velocity accelerate, and pressure reduce, by provided with oxygen supply narrow pipe 11 can automatically by the external world air suck, when reduce rank
When oxygen caused by section is insufficient for the demand of oxidation stage, the air sucked through supplying oxygen narrow pipe 11 can provide for oxidation stage
Purification demand so that depuration quality is significantly improved, in addition, oxygen supply narrow pipe 11 attaches the structure that the outer wall of housing 1 is set, can
Realized using the heat of housing 1 to sucking preheating of air so that the temperature of the air of suction meets the needs of oxidation stage, is
The quality of oxidation stage provides safeguard.
In the present embodiment, reproducibility washcoat 4 and oxidative activation coating 6 use honeycomb carrier, honeycomb gold
Belong to carrier on be coated with for catalyst Dispersed precipitate metal oxide shell, metal oxide shell be A12O3, CeO2,
La2O3 and ZrO2 mixing shell, and thickness is between 20-85um；Using honeycomb carrier, wall thickness is only ceramic monolith
1/4, thus exhaust resistance can be substantially reduced, while make it that catalyst carrier minimizes, in addition, the heat of metallic carrier
Capacity is small, its pre- good in thermal property, is advantageous to the implementation that electronics thermocatalyst realizes HC zero-emission measure, also temperature is fitted in addition
The advantages that answering property is good；Using coated with the metal oxide shell for catalyst Dispersed precipitate, the work of surface of stability product can be achieved
With, while there is the spread for making catalyst particles to keep stable, avoid merging, increase, make activity impaired.
In the present embodiment, air inlet 2 and gas outlet 3 are tubaeform, and horn mouth is oppositely arranged so that exhaust purifier
The cross-sectional area increase of housing 1, beneficial to each purification component in the setting in the cavity of housing 1, provided for the raising of purification efficiency
Ensure.
Based on the said structure design in the present embodiment, the exhaust purifier of diesel engine overall structure is simple, and cost is low, real
The stage purification of diesel engine vent gas is showed, purification efficiency is high, and fault rate greatly reduces, and service life length, disclosure satisfy that diesel oil
The use demand of tail gas purification.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, either which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme, it all should cover among the claim of the present invention and the scope of specification.
Claims (8)
1. a kind of exhaust purifier of diesel engine, including housing, the housing offers the air inlet and gas outlet for tail gas circulation,
It is characterized in that：The cavity interior edge air inlet of the housing to gas outlet direction is disposed with particulate filter arrangement, reproducibility
Washcoat, first baffle, oxidative activation coating and second baffle；
The particulate filter arrangement includes coarse filtration cylinder and fine filtering cylinder, and one end of the coarse filtration cylinder connects setting with the air inlet,
The cavity interior sealing that the other end extends to the housing is set, and the fine filtering cylinder coats the coarse filtration cylinder and set, and the coarse filtration
Active carbon layer is filled between cylinder and the fine filtering cylinder；
The first baffle and the second baffle offer some through holes；
The housing that first plate washer and the oxidative activation apply interlayer is set in venturi-type, and is offered the shell
The oxygen supply narrow pipe that the cavity of body is in communication with the outside.
2. exhaust purifier of diesel engine according to claim 1, it is characterised in that：The coarse filtration cylinder and the fine filtering cylinder
Openend is fixedly connected with mounting ring, and the mounting ring and the air inlet offer the screw thread being engaged, the installation
Ring is installed using screw thread and the air inlet detachable.
3. exhaust purifier of diesel engine according to claim 1, it is characterised in that：The reproducibility washcoat and described
Oxidative activation coating uses honeycomb carrier, and the gold for catalyst Dispersed precipitate is coated with the honeycomb carrier
Belong to oxide shell layer.
4. exhaust purifier of diesel engine according to claim 3, it is characterised in that：The metal oxide shell thickness degree is
Between 20-85um.
5. exhaust purifier of diesel engine according to claim 1, it is characterised in that：The first baffle and the second gear
Plate is fixedly connected by the way of welding with the inwall of the housing.
6. exhaust purifier of diesel engine according to claim 1, it is characterised in that：Some through holes carry with honeycomb
The honeycomb hole of body is staggered setting, between the first baffle and the reproducibility washcoat and the second baffle and the oxygen
Gap is provided between the property changed washcoat.
7. exhaust purifier of diesel engine according to claim 1, it is characterised in that：The oxygen supply narrow pipe attaches the housing
Outer wall set, and quantity is 1-3 roots.
8. exhaust purifier of diesel engine according to claim 1, it is characterised in that：The air inlet and the gas outlet are equal
To be tubaeform, and horn mouth is oppositely arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720304736.7U CN206769988U (en) | 2017-03-27 | 2017-03-27 | A kind of exhaust purifier of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720304736.7U CN206769988U (en) | 2017-03-27 | 2017-03-27 | A kind of exhaust purifier of diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206769988U true CN206769988U (en) | 2017-12-19 |
Family
ID=60632925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720304736.7U Expired - Fee Related CN206769988U (en) | 2017-03-27 | 2017-03-27 | A kind of exhaust purifier of diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206769988U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108979818A (en) * | 2018-09-14 | 2018-12-11 | 耿守祯 | Diesel engine exhaust gas purification device |
| CN110410183A (en) * | 2019-08-27 | 2019-11-05 | 牛志英 | A kind of oil immersion stainless steel wire rotary gas purification device |
| CN112127970A (en) * | 2020-10-27 | 2020-12-25 | 徐工集团工程机械股份有限公司道路机械分公司 | Filter, engineering machinery and using method thereof |
-
2017
- 2017-03-27 CN CN201720304736.7U patent/CN206769988U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108979818A (en) * | 2018-09-14 | 2018-12-11 | 耿守祯 | Diesel engine exhaust gas purification device |
| CN110410183A (en) * | 2019-08-27 | 2019-11-05 | 牛志英 | A kind of oil immersion stainless steel wire rotary gas purification device |
| CN112127970A (en) * | 2020-10-27 | 2020-12-25 | 徐工集团工程机械股份有限公司道路机械分公司 | Filter, engineering machinery and using method thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171219 Termination date: 20190327 |
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| CF01 | Termination of patent right due to non-payment of annual fee |