CN207686804U - Eddy flow urea mixing device - Google Patents
Eddy flow urea mixing device Download PDFInfo
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- CN207686804U CN207686804U CN201721829123.1U CN201721829123U CN207686804U CN 207686804 U CN207686804 U CN 207686804U CN 201721829123 U CN201721829123 U CN 201721829123U CN 207686804 U CN207686804 U CN 207686804U
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- urea
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Abstract
The utility model provides a kind of eddy flow urea mixing device, including：End cap, cylinder, cyclone pipe, preceding porous barrier, rear porous barrier, partition board, air inlet pipe, urea nozzle mounting base；The front end of cylinder sets end cap, and open rearward end is as gas outlet；Partition board, preceding porous barrier, rear porous barrier is arranged in interval successively from front to back in cylinder, thus by the third chamber between the second chamber, preceding porous barrier and the rear porous barrier between the first chamber being divided into cylinder between end cap and partition board, partition board and preceding porous barrier；Air inlet pipe leading portion stretches out the first chamber of cylinder, and back segment is set to the first intracavitary of cylinder, and the back segment of air inlet pipe is equipped with the diffluence pass of connection the first chamber of cylinder；Air inlet pipe leading portion has air inlet；Cyclone pipe is arranged in cylinder；Cyclone pipe includes eddy flow section and porous section, and wherein eddy flow section is located at the first intracavitary of cylinder, porous section of the second intracavitary for being located at cylinder；Urea nozzle mounting base is equipped on end cap；The device can promote ammonia and tail gas mixed effect.
Description
Technical field
The utility model is related to a kind of vehicle tail gas processing urea mixing device, especially a kind of eddy flow urea mixing dress
It sets.
Background technology
Increasingly strict with diesel engine emissions regulations, exhaust aftertreatment technology is the technical measures that must be used.And SCR
It disclosure satisfy that state IV, V and VI discharge standard of state, the basic principle of SCR are to pass through urea injection system（It is commonly called as urea pump）It will
32.5% concentration aqueous solution of urea atomization after spray into exhaust pipe in mix with motor exhaust, aqueous solution of urea by pyrolysis with
Hydrolysis generates ammonia（NH3）, ammonia is by harmful oxynitrides in diesel engine vent gas under the effect of the catalyst（NOx）
It is converted into harmless nitrogen (N2) and water, the top priority of motor exhaust treatment technology SCR routes is that tail gas is made to have with ammonia mist
The biochemical reaction of hybrid concurrency is imitated, while ensureing sufficient temp before entering catalyst.
Invention content
Purpose of the utility model is to solve existing SCR handle during tail gas ammonia and tail gas mixed path compared with
It is short, the problem of undercompounding influences vent gas treatment, provide a kind of simple in structure, compact to design can promote ammonia and tail
The eddy flow urea mixing device of gas mixed effect.The technical solution adopted in the utility model is：
A kind of eddy flow urea mixing device, mainly thes improvement is that, including：It is end cap, cylinder, cyclone pipe, preceding porous
Partition board, rear porous barrier, partition board, air inlet pipe, urea nozzle mounting base；
The front end of the cylinder sets end cap and is closed, and open rearward end is as gas outlet；
Partition board, preceding porous barrier, rear porous barrier is arranged in interval successively from front to back in cylinder, to separate in cylinder
The first chamber, partition board between end cap and partition board and the second chamber between preceding porous barrier, preceding porous barrier and rear porous barrier
Between third chamber；
Air inlet pipe leading portion stretches out the first chamber of cylinder, and back segment is set to the first intracavitary of cylinder, and the back segment of air inlet pipe, which is equipped with, to be connected
The diffluence pass of the first chamber of logical cylinder；Air inlet pipe leading portion has air inlet；
Cyclone pipe is arranged in cylinder；Cyclone pipe includes eddy flow section and porous section, and wherein eddy flow section is located at the first of cylinder
Intracavitary, porous section of the second intracavitary for being located at cylinder；The eddy flow section of the cyclone pipe is equipped with whirlpool around cyclone pipe axis and generates leaf
Piece, porous section of the circumferential surface are equipped with stomata；
Urea nozzle mounting base, the eddy flow section of the urea nozzle mounting base alignment cyclone pipe are equipped on end cap.
Further, one end of the nearly urea nozzle mounting base of cyclone pipe eddy flow section is equipped with conical baffle.
Further, the second intracavitary of cylinder is equipped with semicircle deflector, and semicircle deflector is located at porous section of side of cyclone pipe,
The porous segment distance cylinder body wall in this side is farthest.
Further, the stomata on porous section of circumferential surface of cyclone pipe is uniformly distributed.
Further, the stomata on preceding porous barrier and rear porous barrier is uniformly distributed.
Further, air inlet pipe is arranged in parallel with cyclone pipe.
Further, the centre of urea nozzle mounting base is equipped with urea into hole, center and cyclone pipe axis of the urea into hole
In same axis.
Further, temperature sensor is equipped on cylinder.
The advantages of the utility model：The mixing arrangement is simple in structure, compact to design, easy to use, the setting of multiple cavities
Sufficient ammonia mist blending space is provided, the setting of cyclone pipe and air inlet pipe can increase the mixed effect of ammonia mist, mixed gas
Porous barrier stomata dissipates uniformly around after cavity, so that tail gas is fully spread with ammonia, is conducive to the processing of tail gas.
Description of the drawings
Fig. 1 is the appearance schematic diagram of the utility model.
Fig. 2 is the structural profile illustration of the utility model.
Fig. 3 is the operating diagram of the utility model.
Specific implementation mode
With reference to specific drawings and examples, the utility model is described in further detail.
As depicted in figs. 1 and 2, eddy flow urea mixing device provided by the utility model, including：End cap 1, cylinder 2, eddy flow
Pipe 3, preceding porous barrier 4, rear porous barrier 5, semicircle deflector 6, partition board 7, conical baffle 8, air inlet pipe 9, urea nozzle peace
Fill seat 10；
The front end of the cylinder 2 sets end cap 1 and is closed, and open rearward end is as gas outlet；In cylinder 2 from front to back successively
Interval setting partition board 7, preceding porous barrier 4, rear porous barrier 5, the to be divided into cylinder 2 between end cap 1 and partition board 7
The second chamber, preceding porous barrier 4 between one chamber, partition board 7 and preceding porous barrier 4 and the third chamber between rear porous barrier 5；
Air inlet pipe 9 is arranged in parallel with cyclone pipe 3；9 leading portion of air inlet pipe stretches out the first chamber of cylinder 2, and back segment is set to cylinder 2
First intracavitary, the back segment of air inlet pipe 9 are equipped with the diffluence pass 901 of connection 2 first chamber of cylinder；9 leading portion of air inlet pipe has air inlet；
Cyclone pipe 3 is arranged in cylinder 2；Cyclone pipe 3 includes eddy flow section 301 and porous section 302, wherein eddy flow section 301
In the first intracavitary of cylinder 2, porous section 302 the second intracavitary for being located at cylinder 2；The eddy flow section 301 of the cyclone pipe surrounds eddy flow
Pipe axis is equipped with whirlpool and generates blade 303, and porous section 302 of the circumferential surface is equipped with stomata；More preferably, the second intracavitary of cylinder 2
Equipped with semicircle deflector 6, semicircle deflector 6 is located at porous section of 302 sides of cyclone pipe, and porous section 302 of this side is apart from 2 body of cylinder
Wall is farthest；Since air inlet pipe 9 and cyclone pipe 3 are arranged in parallel, porous section 302 the second intracavitary in cylinder 2 of cyclone pipe is biased to one
Side, not in center, therefore the mixed gas flowed out from porous section 302 can there is a situation where flow velocity unevenness, in porous section of 302 distances
2 that side of body wall distal side of cylinder, space is larger, and mixed gas flow velocity is relatively slow, may result in urea crystals problem, increases in the side
After having added semicircle deflector 6, the mixed gas flow velocity of porous section 302 outflow can be made uniform, avoid urea crystals；It is more excellent
Ground, the stomata on porous section of 302 circumferential surfaces of cyclone pipe is uniformly distributed, uniform also for the flow velocity of mixed gas；
Urea nozzle mounting base 10 is equipped on end cap 1, the urea nozzle mounting base 10 is directed at the eddy flow section of cyclone pipe
301；The centre of urea nozzle mounting base 10 is equipped with urea into hole 1001, and the center in urea into hole 1001 is in cyclone pipe axis
Same axis, to which the urea that the urea nozzle being connect with urea nozzle mounting base ejects can be with cyclone pipe axis side
To parallel；More preferably, one end of the nearly urea nozzle mounting base of cyclone pipe eddy flow section 10 is equipped with conical baffle 8；
Application method：The air inlet of air inlet pipe 9 is connected with the tail gas of automobile engine（Flanged joint, reducing can be used
Pipe connection, directly welding or direct extending cavity）, can also connect with other exhaust gas processing devices（Flanged joint can be used, become
The connection of diameter pipe is directly welded）.The tail gas of automobile engine enters 2 first chamber of cylinder by air inlet, and via air inlet pipe diffluence pass
The eddy flow section 301 that 3 front of cyclone pipe is entered back into after shunting, the whirlpool by eddy flow section 301 generate blade 303 and form circinate gas
Stream, urea are sprayed by the axis direction of the parallel cyclone pipe of urea nozzle mounted on urea nozzle mounting base 10, swirl shape air-flow
Urea is broken up, while urea volatilizes ammonia at high temperature, 8 bootable gas flow purging urea nozzle of conical baffle avoids
Crystallization；
Ammonia and vehicle exhaust be sufficiently mixed after gas, dissipated around for porous section 302 by 3 rear portion of cyclone pipe, gas
Stream is uniformly distributed by the stomata on the guiding role and preceding porous barrier 4 and rear porous barrier 5 of semicircle deflector 6, final air-flow
It is distributed in third intracavitary, by being flowed out with parallel airflow after rear porous barrier 5；Mixed gas after outflow enters SCR catalyst
It is catalyzed.
Temperature sensor can be also set on cylinder 2；Urging for tail gas can be more accurately controlled by temperature sensor
Change is handled.
The mixing arrangement is simple in structure, compact to design, easy to use, and it is fully mixed with tail gas that urea spraying enters cyclone pipe
It closes, mixed gas is made to flow through the every nook and cranny in the cavity of cylinder, fully dissipate, and discharge ammonia；And ammonia is in third cavity
Interior diverging is uniform, is covered with intracavitary, and the utilization rate of vent gas treatment is made to reach maximum.
Entire urea mixing device is suitable for various cartridge types, box SCR type exhaust aftertreatment products, the mixing arrangement
Overall structure size is small, and amplification and diminution appropriate can be also selected according to extraction flow, is a kind of economic, efficient, strong applicability
Urea mixing device.
It should be noted last that the above specific implementation mode is merely illustrative of the technical solution of the present invention and unrestricted,
Although being described the invention in detail with reference to example, it will be understood by those of ordinary skill in the art that, it can be to the present invention
Technical solution be modified or replaced equivalently, without departing from the spirit of the technical scheme of the invention and range, should all cover
In the scope of the claims of the present invention.
Claims (8)
1. a kind of eddy flow urea mixing device, which is characterized in that including：End cap (1), cylinder (2), cyclone pipe (3), it is preceding it is porous every
Plate (4), rear porous barrier (5), partition board (7), air inlet pipe (9), urea nozzle mounting base (10)；
The front end of the cylinder (2) sets end cap (1) and is closed, and open rearward end is as gas outlet；
Partition board (7), preceding porous barrier (4), rear porous barrier (5) is arranged in interval successively from front to back in cylinder (2), thus by cylinder
Interior the second chamber being divided between the first chamber between end cap (1) and partition board (7), partition board (7) and preceding porous barrier (4) of body (2),
Third chamber between preceding porous barrier (4) and rear porous barrier (5)；
Air inlet pipe (9) leading portion stretches out the first chamber of cylinder (2), and back segment is set to the first intracavitary of cylinder (2), after air inlet pipe (9)
Section is equipped with the diffluence pass (901) of connection (2) first chamber of cylinder；Air inlet pipe (9) leading portion has air inlet；
Cyclone pipe (3) setting is in cylinder (2)；Cyclone pipe (3) includes eddy flow section (301) and porous section (302), wherein eddy flow section
(301) it is located at the first intracavitary of cylinder (2), porous section (302) are located at the second intracavitary of cylinder (2)；The eddy flow of the cyclone pipe
Section (301) is equipped with whirlpool around cyclone pipe axis and generates blade (303), and the circumferential surface of porous section (302) is equipped with stomata；
Urea nozzle mounting base (10), the eddy flow of urea nozzle mounting base (10) the alignment cyclone pipe are equipped on end cap (1)
Section (301).
2. eddy flow urea mixing device as described in claim 1, which is characterized in that
One end of the nearly urea nozzle mounting base (10) of cyclone pipe eddy flow section is equipped with conical baffle (8).
3. eddy flow urea mixing device as described in claim 1, which is characterized in that
Second intracavitary of cylinder (2) is equipped with semicircle deflector (6), and semicircle deflector (6) is located at cyclone pipe porous section (302) one
Side, porous section of this side (302) are farthest apart from cylinder (2) body wall.
4. eddy flow urea mixing device as described in claim 1, which is characterized in that
Stomata on porous section of (302) circumferential surface of cyclone pipe is uniformly distributed.
5. eddy flow urea mixing device as described in claim 1, which is characterized in that
Stomata on preceding porous barrier (4) and rear porous barrier (5) is uniformly distributed.
6. eddy flow urea mixing device as described in claim 1, which is characterized in that
Air inlet pipe (9) is arranged in parallel with cyclone pipe (3).
7. eddy flow urea mixing device as described in claim 1, which is characterized in that
The centre of urea nozzle mounting base (10) is equipped with urea into hole (1001), center and cyclone pipe axis of the urea into hole (1001)
Line is in same axis.
8. eddy flow urea mixing device as described in claim 1, which is characterized in that
Temperature sensor is equipped on cylinder (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721829123.1U CN207686804U (en) | 2017-12-23 | 2017-12-23 | Eddy flow urea mixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721829123.1U CN207686804U (en) | 2017-12-23 | 2017-12-23 | Eddy flow urea mixing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207686804U true CN207686804U (en) | 2018-08-03 |
Family
ID=62996026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721829123.1U Active CN207686804U (en) | 2017-12-23 | 2017-12-23 | Eddy flow urea mixing device |
Country Status (1)
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| CN (1) | CN207686804U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108087067A (en) * | 2017-12-23 | 2018-05-29 | 无锡威孚力达催化净化器有限责任公司 | Eddy flow urea mixing device |
| CN109838293A (en) * | 2019-03-29 | 2019-06-04 | 潍柴动力股份有限公司 | A kind of mixer |
| CN110332034A (en) * | 2019-08-23 | 2019-10-15 | 无锡威孚力达催化净化器有限责任公司 | It is vertically arranged SCR post-processing urea mixing device |
-
2017
- 2017-12-23 CN CN201721829123.1U patent/CN207686804U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108087067A (en) * | 2017-12-23 | 2018-05-29 | 无锡威孚力达催化净化器有限责任公司 | Eddy flow urea mixing device |
| CN109838293A (en) * | 2019-03-29 | 2019-06-04 | 潍柴动力股份有限公司 | A kind of mixer |
| CN109838293B (en) * | 2019-03-29 | 2024-04-16 | 潍柴动力股份有限公司 | Mixer |
| CN110332034A (en) * | 2019-08-23 | 2019-10-15 | 无锡威孚力达催化净化器有限责任公司 | It is vertically arranged SCR post-processing urea mixing device |
| CN110332034B (en) * | 2019-08-23 | 2024-03-26 | 无锡威孚力达催化净化器有限责任公司 | Vertical SCR post-treatment urea mixing device |
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