CN109707491A - The mixer of spraying system - Google Patents
The mixer of spraying system Download PDFInfo
- Publication number
- CN109707491A CN109707491A CN201910171090.3A CN201910171090A CN109707491A CN 109707491 A CN109707491 A CN 109707491A CN 201910171090 A CN201910171090 A CN 201910171090A CN 109707491 A CN109707491 A CN 109707491A
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- mixer
- chamber
- spraying system
- lower chamber
- upper cavity
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Abstract
The invention discloses a kind of mixers of spraying system, and for the exhaust aftertreatment of diesel engine, mixer includes union body, choked flow baffle plate, mixture and spoiler.Choked flow baffle plate is folded in step-like and with union body axis to be angularly arranged in inside union body, and tubular body is partitioned into upper chamber and lower chambers by choked flow baffle plate；Mixture is cylindrical, and for the setting perpendicularly to the axis with union body inside union body, mixture includes upper cavity and lower chamber, and upper cavity is located in upper chamber, and lower chamber is located in lower chamber；Spoiler is arranged in bottom chamber, and is located at behind lower chamber.The mixer of spraying system of the invention, with urea and the well-mixed requirement of tail gas is met, the length of mixer is shortened, reduces the production material and cost of mixer, and the advantages of reducing the volume of entire spraying system, reasonably optimizing diesel engine post-processing system structure arrangement.
Description
Technical field
The present invention relates to engine manufacturing fields, especially with regard to a kind of spray for diesel motor exhaust post-processing
Penetrate the mixer of system.
Background technique
Diesel engine emissions NO in the prior artxAfter-treatment system uses selective reduction (SCR), the work of the system
It is that reducing agent (urea liquid that concentration is 32.5%) is sprayed into the exhaust pipe of engine as principle, urea is thermally decomposed into NH3, NH3
And NOxN is generated in SCR catalyst internal-response2And water.Engine NO is reduced to reachxThe purpose of discharge.Mixer is whole
Effect in a system is most important, determines the mixed effect of urea and tail gas, to influence the performance of whole system.
Existing urea mixer is mostly a straight-through long tube, and the inside of mixer do not have it is any can promote urea with
The mechanical structure of tail gas mixing, although such mixer structure is simple, mixed effect is very poor.
Existing urea mixer is mostly a straight-through long tube, and the inside of mixer do not have it is any can promote urea with
The mechanical structure of tail gas mixing, although such mixer structure is simple, mixed effect is very poor.Existing mixer have with
Lower disadvantage:
1, the structure mixed due to not can promote urea with tail gas, atomization energy of the entire spraying system to nozzle
Force request is got higher, so that the manufacture difficulty of nozzle be caused to increase, increases the manufacturing cost of nozzle；
2, in order to which the incorporation time for making urea and tail gas reaches well-mixed effect, the length of mixer can be designed very
Long, moreover, because urea has strong corrosive, therefore, the material of mixing tube needs to be the high stainless steel material of corrosion resistance, from
And cause the consumptive material of mixer big, at high cost, the problem of system bulk becomes larger；
3, since mixer is a straight-through long tube, the exhaust gas flow in mixer is very slow, and tail gas is easy in urea
The problem of nozzle surface or mixing inside pipe wall form crystallization, cause pipeline blockage.
The information disclosed in the background technology section is intended only to increase the understanding to general background of the invention, without answering
When being considered as recognizing or imply that the information constitutes the prior art already known to those of ordinary skill in the art in any form.
Summary of the invention
The purpose of the present invention is to provide a kind of mixers of spraying system, after the tail gas of diesel engine
Reason is sufficiently mixed reducing agent and engine exhaust uniformly, to solve above-mentioned disadvantage.
To achieve the above object, the present invention provides a kind of mixers of spraying system, after the tail gas of diesel engine
Reason, mixer includes union body, choked flow baffle plate, mixture and spoiler.Choked flow baffle plate is in step-like and with union body axis
Line, which folds, to be angularly arranged in inside union body, and tubular body is partitioned into upper chamber and lower chambers by choked flow baffle plate；Mixing
Body is cylindrical, and for the setting perpendicularly to the axis with union body inside union body, mixture includes upper cavity and lower chamber, on
Cavity is located in upper chamber, and lower chamber is located in lower chamber；Spoiler is arranged in bottom chamber, and is located at behind lower chamber.
In a preferred embodiment, union body includes import and outlet, and import is connected to upper chamber, and outlet is under
Chamber.
In a preferred embodiment, spoiler is arranged between lower chamber and outlet.
In a preferred embodiment, it communicates inside upper cavity and lower chamber, and is offered on upper cavity and lower chamber
Multiple through-holes, upper cavity are connected to by through-hole with upper chamber, and lower chamber is connected to by through-hole with lower chambers.
In a preferred embodiment, the mixer of spraying system further includes nozzle carrier, is arranged on union body, spray
The lower part of mouth seat is connected to the top of upper cavity, and nozzle carrier is to install urea jet blower.
It in a preferred embodiment, include the blade of multiple warpages on spoiler.
Compared with prior art, the mixer of spraying system of the invention has the advantages that it meets urea
With the well-mixed requirement of tail gas, the length of mixer is shortened, reduces the production material and cost of mixer, reduces whole
The volume of a spraying system reasonably optimizes the structure arrangement of diesel engine post-processing system.
Detailed description of the invention
Fig. 1 is the schematic structural cross-sectional view of mixer according to an embodiment of the present invention.
Fig. 2 is the structural schematic diagram in the import direction of mixer according to an embodiment of the present invention.
Fig. 3 is the structural schematic diagram of the export direction of mixer according to an embodiment of the present invention.
Main appended drawing reference explanation:
1- union body, 11- import, 12- are exported, 13- upper chamber, 14- lower chambers, 2- nozzle carrier, 3- mixture, on 31-
Cavity, 32- lower chamber, 4- choked flow baffle plate, 5- spoiler, 51- blade.
Specific embodiment
With reference to the accompanying drawing, specific embodiments of the present invention will be described in detail, it is to be understood that guarantor of the invention
Shield range is not limited by the specific implementation.
Unless otherwise explicitly stated, otherwise in entire disclosure and claims, term " includes " or its change
Changing such as "comprising" or " including " etc. will be understood to comprise stated element or component, and not exclude other members
Part or other component parts.
As shown in Figure 1, Fig. 1 is the schematic structural cross-sectional view of mixer according to an embodiment of the present invention.According to this hair
A kind of mixer of spraying system of bright preferred embodiment, for the exhaust aftertreatment of diesel engine, mixer includes union body
1, choked flow baffle plate 4, mixture 3 and spoiler 5.
In some embodiments, choked flow baffle plate 4 some similar to step-like and fold certain angle with the axis of union body 1
Ground be arranged inside union body 1, and choked flow baffle plate 4 be it is sweptback, be more advantageous to guide functions in this way.Choked flow baffle plate 4
Tubular body is partitioned into upper chamber 13 and lower chambers 14, and upper chamber 13 is not connected to lower chambers 14 itself；Mixture 3 is in circle
Tubular, for the setting perpendicularly to the axis with union body 1 inside union body 1, mixture 3 includes upper cavity 31 and lower chamber 32,
Upper cavity 31 is located in upper chamber 13, and lower chamber 32 is located in lower chamber 32；It is communicated inside upper cavity 31 and lower chamber 32, and on
Multiple through-holes are offered on cavity 31 and lower chamber 32, upper cavity 31 is connected to by through-hole with upper chamber 13, and lower chamber 32 passes through
Through-hole is connected to lower chambers 14.
As shown in Figure 2 to Figure 3, Fig. 2 is the structural representation in the import direction of mixer according to an embodiment of the present invention
Figure.Fig. 3 is the structural schematic diagram of the export direction of mixer according to an embodiment of the present invention.In some embodiments,
Union body 1 includes import 11 and outlet 12, and import 11 is connected to upper chamber 13, and outlet 12 is connected to lower chambers 14.Spoiler 5
It is arranged in lower chambers 14, and is located between lower chamber 32 and outlet 12, includes the blade 51 of multiple warpages on spoiler 5.
In some embodiments, the mixer of spraying system further includes nozzle carrier 2, is arranged on union body 1, nozzle
The lower part of seat 2 is connected to the top of upper cavity 31, and nozzle carrier 2 is to install urea jet blower.
The working principle of the mixer of spraying system of the invention is following (please referring to Fig. 1):
Air-flow enters in upper chamber 13 from import 11 first, then enters it by multiple through-holes on upper cavity 31
Inside is equipped with urea nozzle since the top of upper cavity 31 is connected to nozzle carrier 2 thereon, enters inside upper cavity 31
Air-flow is entered after being sufficiently mixed with the urea that urea nozzle sprays in the lower chamber 32 communicated with inside upper cavity 31, at present
Also multiple through-holes are offered on cavity 32, mixed gas is entered in lower chambers 14 by multiple through-holes, finally passes through spoiler 5
On multiple warpages 51 flow-disturbing of blade effect be sufficiently mixed again after from outlet 12 be discharged.
In conclusion the hybrid instrument of spraying system of the invention has the advantage that the mixing chamber of mixer is aperture
Cylindrical tubes, and urea is met under the collective effects such as mixing chamber, choked flow baffle plate and spoiler perpendicular to mixer axis
With the well-mixed requirement of tail gas, the length of mixer is shortened, reduces the production material and cost of mixer, reduces whole
The volume of a spraying system reasonably optimizes the structure arrangement of diesel engine post-processing system.
The aforementioned description to specific exemplary embodiment of the invention is in order to illustrate and illustration purpose.These descriptions
It is not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to the above instruction, can much be changed
And variation.The purpose of selecting and describing the exemplary embodiment is that explaining specific principle of the invention and its actually answering
With so that those skilled in the art can be realized and utilize a variety of different exemplary implementation schemes of the invention and
Various chooses and changes.The scope of the present invention is intended to be limited by claims and its equivalents.
Claims (6)
1. a kind of mixer of spraying system, the exhaust aftertreatment for diesel engine, which is characterized in that the mixer includes:
Union body；
Choked flow baffle plate, in step-like and fold and be angularly arranged in described sleeve pipe body with the axis of described sleeve pipe body
The tubular body is partitioned into upper chamber and lower chambers by portion, the choked flow baffle plate；
Mixture, it is cylindrical, the setting perpendicularly to the axis of the mixture and described sleeve pipe body inside described sleeve pipe body,
The mixture includes upper cavity and lower chamber, and the upper cavity is located in the upper chamber, the lower chamber be located at it is described under
In cavity；And
Spoiler is arranged in the bottom chamber, and is located at behind the lower chamber.
2. the mixer of spraying system as described in claim 1, which is characterized in that described sleeve pipe body includes import and goes out
Mouthful, the import is connected to the upper chamber, and the outlet is connected to the lower chambers.
3. the mixer of spraying system as claimed in claim 2, which is characterized in that the spoiler is arranged in the lower chamber
Between the outlet.
4. the mixer of spraying system as described in claim 1, which is characterized in that inside the upper cavity and the lower chamber
Communicate, and offer multiple through-holes on the upper cavity and the lower chamber, the upper cavity by the through-hole and it is described on
Chamber, the lower chamber are connected to by the through-hole with the lower chambers.
5. the mixer of spraying system as described in claim 1, which is characterized in that further include nozzle carrier, be arranged described
On union body, the lower part of the nozzle carrier is connected to the top of the upper cavity, and the nozzle carrier is to install urea jet blower.
6. the mixer of spraying system as described in claim 1, which is characterized in that including multiple warpages on the spoiler
Blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910171090.3A CN109707491A (en) | 2019-03-07 | 2019-03-07 | The mixer of spraying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910171090.3A CN109707491A (en) | 2019-03-07 | 2019-03-07 | The mixer of spraying system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109707491A true CN109707491A (en) | 2019-05-03 |
Family
ID=66265815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910171090.3A Pending CN109707491A (en) | 2019-03-07 | 2019-03-07 | The mixer of spraying system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109707491A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111878197A (en) * | 2020-03-05 | 2020-11-03 | 广西玉柴机器股份有限公司 | Efficient SCR mixer |
| CN115013128A (en) * | 2022-08-09 | 2022-09-06 | 潍柴动力股份有限公司 | SCR mixer and SCR system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140024082A (en) * | 2012-08-17 | 2014-02-28 | 세종공업 주식회사 | Mixing module for post treatment exhaust contamination gas decreasing system in diesel engine |
| CN106401711A (en) * | 2016-10-25 | 2017-02-15 | 无锡威孚力达催化净化器有限责任公司 | Honeycomb hemisphere open type urea mixing device |
| EP3180114B1 (en) * | 2014-08-13 | 2018-03-21 | Officine Metallurgiche G. Cornaglia S.p.A. | Dynamic mixer with movable vanes for exhaust gases of i.c. engines |
| CN207686807U (en) * | 2017-12-23 | 2018-08-03 | 无锡威孚力达催化净化器有限责任公司 | Vent gas treatment urea mixing device |
| CN208347876U (en) * | 2018-04-16 | 2019-01-08 | 艾蓝腾新材料科技(上海)有限公司 | A kind of SCR urea jet mixer |
| CN109296426A (en) * | 2018-11-28 | 2019-02-01 | 无锡市杜克环保科技有限公司 | A kind of generating set exhaust gas purification system |
-
2019
- 2019-03-07 CN CN201910171090.3A patent/CN109707491A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140024082A (en) * | 2012-08-17 | 2014-02-28 | 세종공업 주식회사 | Mixing module for post treatment exhaust contamination gas decreasing system in diesel engine |
| EP3180114B1 (en) * | 2014-08-13 | 2018-03-21 | Officine Metallurgiche G. Cornaglia S.p.A. | Dynamic mixer with movable vanes for exhaust gases of i.c. engines |
| CN106401711A (en) * | 2016-10-25 | 2017-02-15 | 无锡威孚力达催化净化器有限责任公司 | Honeycomb hemisphere open type urea mixing device |
| CN207686807U (en) * | 2017-12-23 | 2018-08-03 | 无锡威孚力达催化净化器有限责任公司 | Vent gas treatment urea mixing device |
| CN208347876U (en) * | 2018-04-16 | 2019-01-08 | 艾蓝腾新材料科技(上海)有限公司 | A kind of SCR urea jet mixer |
| CN109296426A (en) * | 2018-11-28 | 2019-02-01 | 无锡市杜克环保科技有限公司 | A kind of generating set exhaust gas purification system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111878197A (en) * | 2020-03-05 | 2020-11-03 | 广西玉柴机器股份有限公司 | Efficient SCR mixer |
| CN115013128A (en) * | 2022-08-09 | 2022-09-06 | 潍柴动力股份有限公司 | SCR mixer and SCR system |
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Application publication date: 20190503 |