CN209413969U - A kind of urea liquid bimetallic tube mixer for SCR system - Google Patents
A kind of urea liquid bimetallic tube mixer for SCR system Download PDFInfo
- Publication number
- CN209413969U CN209413969U CN201920142790.5U CN201920142790U CN209413969U CN 209413969 U CN209413969 U CN 209413969U CN 201920142790 U CN201920142790 U CN 201920142790U CN 209413969 U CN209413969 U CN 209413969U
- Authority
- CN
- China
- Prior art keywords
- pipe
- internal layer
- hole pipe
- urea
- layer hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Exhaust Gas After Treatment (AREA)
Abstract
The utility model discloses a kind of urea liquid bimetallic tube mixers for SCR system, it includes outer housing, internal layer hole pipe, outer hole pipe, urea nozzle and air inlet pipe, first partition and second partition are arranged at intervals between the outer hole pipe and outer housing, the internal layer hole pipe is located in outer hole pipe and its inlet end is connect by taper connection pipe with outer hole pipe, the inlet end of the outer housing is equipped with urea nozzle seat, the urea nozzle is installed on urea nozzle seat, the eccentric grove with internal layer hole pipe bias is provided between the bottom and internal layer hole pipe of the taper connection pipe, the closed at both ends of the eccentric grove is fixedly connected on the pipe of internal layer hole.Above-mentioned urea liquid bimetallic tube mixer is not only simple in structure, is compact, ingenious in design；And eccentric grove is set between the bottom and internal layer hole pipe of taper connection pipe, eccentric grove it is closed at both ends, enable the air-flow for flowing through eccentric grove concentrate purging internal layer hole pipe perforation side urea deposits, eliminate urea crystals risk.
Description
Technical field
The utility model belongs to diesel engine vent gas post-processing technology, molten more particularly, to a kind of urea for SCR system
Liquid bimetallic tube mixer.
Background technique
Refer to installation for selective catalytic conversion system of diesel engine SCR (Selective Catalyst Reduction)
In diesel engine automobile air exhausting system, the NOx in diesel emission is catalysed and reduced into the catalytic reduction device of N2 and O2, selection urine
Plain aqueous solution is as reducing agent.Aqueous solution of urea is ejected into the exhaust pipe of catalyst upstream, in the work of exhaust gas temperature and air-flow
CO is produced as with lower hydrolysis2And NOx is reduced into free of contamination nitrogen and water as reducing agent by ammonia, ammonia.
Mixer is the essential important component of SCR system, is used for NH3With the mixing of exhaust gas, and the pass of SCR system
Key technology is NH3With the mixing uniformity of exhaust gas, tied currently, the existing urea jet mixer for SCR system exists
Brilliant risk is larger, leads to NOXThe low disadvantage of transformation efficiency.
Utility model content
The purpose of this utility model is to provide a kind of urea liquid bimetallic tube mixers for SCR system, to solve
Prior art urea liquid mixer has that crystallization risk is larger.
For this purpose, the utility model uses following technical scheme:
A kind of urea liquid bimetallic tube mixer for SCR system comprising outer housing, internal layer hole pipe, outer hole pipe,
Urea nozzle and air inlet pipe, the internal layer hole pipe and outer hole Guan Shangjun offer mix aperture, the outer hole pipe and outer housing
It is arranged at intervals with first partition and second partition between inner wall, the first partition is located at the inlet end of mixer, and described second
Partition is located at the exhaust end of mixer, and several gas vents are offered on the second partition, and the internal layer hole pipe is located at outer
In the pipe of layer hole and its inlet end is connect by taper connection pipe with outer hole pipe, and the outer hole pipe is relative to the another of inlet end
End sealed set has blanking cover, and the inlet end of the outer housing is equipped with urea nozzle seat, and the urea nozzle is installed on urea spray
On mouth seat, the air inlet pipe is installed on the inlet end of mixer, is arranged between the bottom and internal layer hole pipe of the taper connection pipe
There is the eccentric grove with internal layer hole pipe bias, the closed at both ends of the eccentric grove is fixedly connected on the pipe of internal layer hole.
Particularly, the inlet end of the outer housing is provided with air inlet end cap, and the urea nozzle seat is installed on the air inlet
On end cap, the air inlet pipe is installed on the inlet end and covers.
Particularly, the outer end of the air inlet pipe and the exhaust end of outer housing are mounted on connecting flange.
Particularly, the blanking cover generally spheroidal structure.
Particularly, the position on the outer housing close to exhaust end is equipped with temperature sensor.
The beneficial effects of the utility model are, compared with prior art the urea liquid bimetallic tube for being used for SCR system
Mixer is not only simple in structure, is compact, ingenious in design；And it is arranged between the bottom and internal layer hole pipe of taper connection pipe eccentric
Slot, eccentric grove it is closed at both ends, enable the air-flow for flowing through eccentric grove concentrate purging internal layer hole pipe perforation side urea deposits,
Eliminate urea crystals risk.
Detailed description of the invention
Fig. 1 is the urea liquid bimetallic tube mixer for SCR system that specific embodiment of the present invention provides
Sectional view；
Fig. 2 is the urea liquid bimetallic tube mixer for SCR system that specific embodiment of the present invention provides
The sectional view of inlet end.
Specific embodiment
Further illustrate the technical solution of the utility model below with reference to the accompanying drawings and specific embodiments.
The utility model is more fully retouched below with reference to relevant drawings for the ease of understanding the utility model,
It states.The preferred embodiment of the utility model is given in attached drawing.But the utility model can come in many different forms in fact
It is existing, however it is not limited to embodiment described herein.On the contrary, purpose of providing these embodiments is makes public affairs to the utility model
Open the more thorough and comprehensive of content understanding.It should be noted that it can be straight when component is referred to as " being fixed on " another component
It connects on the other part or there may also be components placed in the middle.When a component is considered as " connection " another component,
It can be directly to another component or may be simultaneously present component placed in the middle.Term as used herein is " vertical
", " horizontal ", "left", "right" and similar statement for illustrative purposes only, be not offered as being unique embodiment party
Formula.Unless otherwise defined, all technical and scientific terms used herein and the technical field for belonging to the utility model
The normally understood meaning of technical staff is identical.Terminology used in the description of the utility model herein is intended merely to retouch
State the purpose of specific embodiment, it is not intended that in limitation the utility model.Term " and or " used herein includes one
Or any and all combinations of multiple relevant listed items.
It please refers to shown in Fig. 1 and Fig. 2, in the present embodiment, a kind of urea liquid bimetallic tube mixer packet for SCR system
Outer housing 1, internal layer hole pipe 2, outer hole pipe 3, urea nozzle 4 and air inlet pipe 5 are included, one end of mixer is another as inlet end
End is exhaust end, offers on internal layer hole pipe 2 and outer hole pipe 3 and mixes circular hole 6, between 1 inner wall of outer hole pipe 3 and outer housing
It is arranged at intervals with first partition 7 and second partition 8, first partition 7 is located at the inlet end of mixer, will be outer by first partition 7
The inner cavity of shell 1 is divided into two parts, and second partition 8 is located at the exhaust end of mixer, and several rows are offered on second partition 8
Stomata 9, the inlet end of outer housing 1 are provided with air inlet end cap 10.
Internal layer hole pipe 2 is located in outer hole pipe 3 and its inlet end is connect by taper connection pipe 11 with outer hole pipe 3, outside
Layer hole pipe 3 has the blanking cover 12 of spheroidal relative to the other end sealed set of inlet end, is equipped with urea spray on air inlet end cap 10
Mouth seat 13, urea nozzle 4, which is installed on urea nozzle seat 13 and is aligned in internal layer hole pipe 2, sprays urea liquid, and air inlet pipe 5 is installed
In on air inlet end cap 10, being provided with the eccentric grove eccentric with internal layer hole pipe 2 between the bottom and internal layer hole pipe 2 of taper connection pipe 11
14, the closed at both ends of eccentric grove 14 is fixedly connected on internal layer hole pipe 2.
The outer end of air inlet pipe 5 and the exhaust end of outer housing 1 are mounted on connecting flange 15, close exhaust on outer housing 1
The position at end is equipped with temperature sensor 16.
When work, exhaust gas is flowed into mixer by air inlet pipe 5, while the urea that urea nozzle 4 ejects falls in internal layer
The perforation of hole pipe 2 side carries out broken decomposition.To reinforce the broken decomposition of urea, a part of gas is flowed through from eccentric grove 14 manages internal layer hole
The urea deposits of 2 perforation sides are purged, and mixed gas-liquid mixture enters internal layer hole pipe 2, outer hole pipe 3, taper connection
It is further crushed mixing in the chamber that pipe 11 and blanking cover 12 are constituted, finally by the aperture stream on outer hole pipe 3 and second partition 8
Mixer out.Since 14 two sides of eccentric grove are closed, enable the air-flow for flowing through eccentric grove 14 that purging internal layer hole pipe 2 is concentrated to perforate
The urea deposits of side eliminate urea crystals risk.
Note that above are only the preferred embodiment and institute's application technology principle of the utility model.Those skilled in the art's meeting
Understand, the utility model is not limited to specific embodiment described here, is able to carry out for a person skilled in the art various bright
Aobvious variation, readjustment and substitution is without departing from the protection scope of the utility model.Therefore, although passing through above embodiments
The utility model is described in further detail, but the utility model is not limited only to above embodiments, is not departing from
It can also include more other equivalent embodiments in the case that the utility model is conceived, and the scope of the utility model is by appended
Scope of the claims determine.
Claims (5)
1. a kind of urea liquid bimetallic tube mixer for SCR system, which is characterized in that it include outer housing, internal layer hole pipe,
Outer hole pipe, urea nozzle and air inlet pipe, the internal layer hole pipe and outer hole Guan Shangjun offer mix aperture, the outer hole pipe
First partition and second partition are arranged at intervals between outer housing inner wall, the first partition is located at the inlet end of mixer,
The second partition is located at the exhaust end of mixer, and several gas vents are offered on the second partition, the internal layer hole
Pipe is located in outer hole pipe and its inlet end is connect by taper connection pipe with outer hole pipe, and the outer hole pipe is relative to air inlet
The other end sealed set at end has blanking cover, and the inlet end of the outer housing is equipped with urea nozzle seat, the urea nozzle installation
In on urea nozzle seat, the air inlet pipe is installed on the inlet end of mixer, and the bottom and internal layer hole of the taper connection pipe are managed
Between be provided with eccentric grove with internal layer hole pipe bias, the closed at both ends of the eccentric grove is fixedly connected on the pipe of internal layer hole.
2. the urea liquid bimetallic tube mixer according to claim 1 for SCR system, which is characterized in that described outer
The inlet end of shell is provided with air inlet end cap, and the urea nozzle seat is installed on the inlet end and covers, the air inlet pipe installation
It is covered in the inlet end.
3. the urea liquid bimetallic tube mixer according to claim 1 or 2 for SCR system, which is characterized in that described
The outer end of air inlet pipe and the exhaust end of outer housing are mounted on connecting flange.
4. the urea liquid bimetallic tube mixer according to claim 1 for SCR system, which is characterized in that described stifled
Lid generally spheroidal structure.
5. the urea liquid bimetallic tube mixer according to claim 1 for SCR system, which is characterized in that described outer
Position on shell close to exhaust end is equipped with temperature sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920142790.5U CN209413969U (en) | 2019-01-28 | 2019-01-28 | A kind of urea liquid bimetallic tube mixer for SCR system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920142790.5U CN209413969U (en) | 2019-01-28 | 2019-01-28 | A kind of urea liquid bimetallic tube mixer for SCR system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209413969U true CN209413969U (en) | 2019-09-20 |
Family
ID=67944297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920142790.5U Active CN209413969U (en) | 2019-01-28 | 2019-01-28 | A kind of urea liquid bimetallic tube mixer for SCR system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209413969U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109653847A (en) * | 2019-01-28 | 2019-04-19 | 凯龙高科技股份有限公司 | A kind of urea liquid bimetallic tube mixer for SCR system |
| CN111927602A (en) * | 2020-08-18 | 2020-11-13 | 无锡威孚力达催化净化器有限责任公司 | Mixing device with double cyclone tube cross devices |
| CN114320545A (en) * | 2021-12-27 | 2022-04-12 | 浙江银轮机械股份有限公司 | Mixer of engine tail gas after-treatment system |
| CN114961953A (en) * | 2022-06-14 | 2022-08-30 | 无锡威孚力达催化净化器有限责任公司 | Device for preventing SCR exhaust temperature sensor from cheating and OBD diagnosis method |
-
2019
- 2019-01-28 CN CN201920142790.5U patent/CN209413969U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109653847A (en) * | 2019-01-28 | 2019-04-19 | 凯龙高科技股份有限公司 | A kind of urea liquid bimetallic tube mixer for SCR system |
| CN111927602A (en) * | 2020-08-18 | 2020-11-13 | 无锡威孚力达催化净化器有限责任公司 | Mixing device with double cyclone tube cross devices |
| CN114320545A (en) * | 2021-12-27 | 2022-04-12 | 浙江银轮机械股份有限公司 | Mixer of engine tail gas after-treatment system |
| CN114320545B (en) * | 2021-12-27 | 2023-09-12 | 浙江银轮机械股份有限公司 | Mixer of engine tail gas aftertreatment system |
| CN114961953A (en) * | 2022-06-14 | 2022-08-30 | 无锡威孚力达催化净化器有限责任公司 | Device for preventing SCR exhaust temperature sensor from cheating and OBD diagnosis method |
| CN114961953B (en) * | 2022-06-14 | 2024-04-26 | 无锡威孚力达催化净化器有限责任公司 | Device for preventing SCR exhaust temperature sensor from cheating and OBD diagnosis method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209413969U (en) | A kind of urea liquid bimetallic tube mixer for SCR system | |
| CN109653847A (en) | A kind of urea liquid bimetallic tube mixer for SCR system | |
| CN201551965U (en) | Selective catalytic reduction catalyst injection system | |
| CN109653849A (en) | A kind of urea injection bimetallic tube mixer for diesel engine vent gas post-processing | |
| US20040237511A1 (en) | Mixing device for an exhaust gas purification system | |
| CN106640301A (en) | Tail gas post-treatment device | |
| CN107575287A (en) | Exhaust aftertreatment mixing arrangement | |
| CN110735693B (en) | Urea mixer for exhaust aftertreatment | |
| CN206487537U (en) | Tail-gas after treatment apparatus | |
| JPWO2013136614A1 (en) | Exhaust gas purification device | |
| CN205714370U (en) | Tail-gas after treatment apparatus | |
| CN109268114A (en) | A kind of flow mixer for SCR system exhaust aftertreatment | |
| CN109488426A (en) | A kind of Double layer spiral flow vane type urea injection mixed cell | |
| CN111140324A (en) | Diesel engine aftertreatment blender | |
| CN216157745U (en) | Mixer for mixing exhaust gas and reducing agent, and exhaust line | |
| CN110359989A (en) | A kind of performance chamber mixer for diesel engine vent gas processing | |
| CN214330729U (en) | Urea mixer for diesel engine tail gas aftertreatment | |
| CN208122919U (en) | A kind of rotating flow guidance manages the mixing arrangement of horizontal combination with hole | |
| CN105065093B (en) | A kind of SCR system and its blender | |
| CN208138018U (en) | SCR assembly integrating sound elimination function | |
| CN111485980A (en) | Mixing assembly | |
| CN110469388A (en) | A kind of cartridge type compact mixer for diesel engine vent gas processing | |
| CN104975920B (en) | A kind of SCR system and its box catalytic muffler | |
| CN104879198A (en) | SCR (Selective Catalytic Reduction) system and catalytic reaction unit thereof | |
| CN209413972U (en) | A kind of urea injection bimetallic tube mixer for diesel engine vent gas post-processing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |