CN208763727U - Exhaust aftertreatment mixing arrangement - Google Patents
Exhaust aftertreatment mixing arrangement Download PDFInfo
- Publication number
- CN208763727U CN208763727U CN201821509979.5U CN201821509979U CN208763727U CN 208763727 U CN208763727 U CN 208763727U CN 201821509979 U CN201821509979 U CN 201821509979U CN 208763727 U CN208763727 U CN 208763727U
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- Prior art keywords
- shell
- exhaust aftertreatment
- mixing arrangement
- cavity
- aftertreatment mixing
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Abstract
A kind of exhaust aftertreatment mixing arrangement comprising shell and be located at the intracorporal mixing tube of the shell.The shell includes first shell and second shell, wherein the first shell includes the first cavity to be connected to the first after-treatment device, the second shell includes the second cavity to be connected to the second after-treatment device.The shell is equipped with the demarcation plate for separating first cavity and second cavity, and the demarcation plate is equipped with mounting hole.The mixing tube includes cyclone pipe and the connecting tube that is fabricated separately but links together with the cyclone pipe.The cyclone pipe includes the spinning disk in first cavity and the mounting portion positioned at the lower section of the spinning disk.The mounting portion is inserted and fixed into the mounting hole, and the mounting portion passes through the mounting hole mutually to fix with the connecting tube.So set, improving the flexibility of mixing tube arrangement and installation.
Description
Technical field
The utility model relates to a kind of exhaust aftertreatment mixing arrangements, belong to motor exhaust post-processing technology field.
Background technique
Research shows that ammonia distribution in exhaust gas aftertreatment system (such as selective catalytic reduction system operating, SCR system) pipeline
Uniformity coefficient has important influence to the overall performance and endurance quality of system.If ammonia, which is unevenly distributed, will lead to regional area
Ammonia causes oxynitrides (NOx) transformation efficiency too low excessively to easily cause NH_3 leakage in other ammonia thin areas.It is long
The uneven distribution of time ammonia will lead to that catalyst aging is uneven, to influence the overall performance of catalyst.In addition, urea solution
The uneven distribution of drop will cause local tube wall or mixed structure temperature is too low, forms crystallization, offgas duct can be blocked when serious, is led
Cause engine power performance decline.
In order to reduce the risk of urea crystals, mixing tube is usually set in the prior art.However, mounting arrangements are limited to,
How the technical issues of reasonably arrangement and installation are this field urgent need to resolve is carried out to mixing tube.
Utility model content
It is easy to the exhaust aftertreatment mixing arrangement arranged the purpose of this utility model is to provide a kind of mixing tube.
To achieve the above objectives, the present invention adopts the following technical solutions: a kind of exhaust aftertreatment mixing arrangement, packet
It includes shell and is located at the intracorporal mixing tube of the shell, the shell includes first shell and matches with the first shell
Second shell, wherein the first shell includes the first cavity to be connected to the first after-treatment device, the second shell
Body includes the second cavity to be connected to the second after-treatment device, and the shell, which is equipped with, separates first cavity and described the
The demarcation plate of two cavitys, the demarcation plate are equipped with mounting hole；The mixing tube includes cyclone pipe and separates with the cyclone pipe
The connecting tube for making but linking together, the cyclone pipe include the spinning disk in first cavity and are located at described
The mounting portion of the lower section of spinning disk, the mounting portion are inserted and fixed into the mounting hole, and the mounting portion passes through the peace
Connecting tube described in dress Kong Yiyu is mutually fixed.
As the further improved technical solution of the utility model, the cyclone pipe has round table-like outer surface, described
Spinning disk is divided into two groups along the axis of the cyclone pipe and is arranged on the outer surface.
As the further improved technical solution of the utility model, other portions of the mounting portion compared to the cyclone pipe
Dividing is in flared.
As the further improved technical solution of the utility model, the exhaust aftertreatment mixing arrangement is equipped with positioned at described
The top of spinning disk and the mounting base to install urea nozzle, the urea nozzle is to the jet atomization into the mixing tube
Urea droplets.
As the further improved technical solution of the utility model, the demarcation plate is located at the bottom of the first shell.
As the further improved technical solution of the utility model, the first shell and the second shell are at least partly
Mutually connect together.
As the further improved technical solution of the utility model, the connecting tube is equipped with and at least partly accommodates the installation
The expansion mouth in portion.
As the further improved technical solution of the utility model, the connecting tube is equipped with positioned at the lower section of the expansion mouth
Several areoles.
As the further improved technical solution of the utility model, the exhaust aftertreatment mixing arrangement includes being fixed on institute
State on the inner wall of connecting tube and be located at the porous plate of the bottom of the connecting tube.
As the further improved technical solution of the utility model, the exhaust aftertreatment mixing arrangement further includes being located at institute
State the ω shape reflecting plate of the lower section of mixing tube.
Compared to the prior art, the utility model is fabricated separately but connect by setting cyclone pipe and with the cyclone pipe
Connecting tube together improves the flexibility of mixing tube arrangement and installation.
Detailed description of the invention
Fig. 1 is the main view of the utility model exhaust aftertreatment mixing arrangement.
Fig. 2 is the side view of Fig. 1.
Fig. 3 is the diagrammatic cross-section of the line A-A along Fig. 1.
Fig. 4 is the stereogram exploded view of the utility model exhaust aftertreatment mixing arrangement.
Specific embodiment
It please join shown in Fig. 1 to Fig. 4, the utility model discloses a kind of exhaust aftertreatment mixing arrangement 100, to handle hair
The exhaust of motivation.The exhaust aftertreatment mixing arrangement 100 include shell 1, the mixing tube 2 in the shell 1 and with
The baffle plate assembly 3 that the shell 1 matches.
The shell 1 includes first shell 11 and the second shell 12 matched with the first shell 11, wherein institute
State first shell 11 include to the first after-treatment device (such as diesel particulate trap and oxidizing catalytic converter, not
Diagram) connection the first cavity 110；The second shell 12 include to the second after-treatment device (such as selective catalysis
It is reducing agent, not shown) the second cavity 120 of connection.The shell 1, which is equipped with, separates first cavity 110 and second chamber
The demarcation plate 13 of body 120, the demarcation plate 13 are equipped with mounting hole 131.In the utility model embodiment illustrated, described point
Partition 13 is located at the bottom of the first shell 11.Preferably, the demarcation plate 13 is integrally formed with the first shell 11, with
Save the quantity of components.The first shell 11 at least partly mutually connects together with the second shell 12, to be formed
One entirety.
The exhaust aftertreatment mixing arrangement 100 is equipped with the mounting base 14 to install urea nozzle 4, the urea nozzle
4 urea droplets to the jet atomization into the mixing tube 2.
The mixing tube 2 includes cyclone pipe 21 and the connecting tube for being fabricated separately but linking together with the cyclone pipe 21
22.The cyclone pipe 21 includes spinning disk 211 in first cavity 110 and under the spinning disk 211
The mounting portion 212 of side.In the utility model embodiment illustrated, the cyclone pipe 21 has round table-like outer surface 213,
The spinning disk 211 is divided into two groups along the axis of the cyclone pipe 21 and is arranged on the outer surface 213.The mounting portion 212
Other parts compared to the cyclone pipe 21 are in flared.When installation, the mounting portion 212 is inserted and fixed into the installation
In hole 131, the mounting portion 212 passes through the mounting hole 131 to fix with 22 phase of connecting tube.
The connecting tube 22 is equipped with the expansion mouth 221 at least partly accommodating the mounting portion 212 and is located at the flaring
Several areoles 222 of the lower section in portion 221.
The baffle plate assembly 3 includes baffle portion 31 and the first flange 32 and second method fixed with 31 phase of baffle portion
Orchid 33.
In order to further increase the broken and evaporation of urea, the exhaust aftertreatment mixing arrangement 100 further includes being fixed on
The porous plate 5 of bottom on the inner wall of the connecting tube 22 and positioned at the connecting tube 22.
The exhaust aftertreatment mixing arrangement 100 further includes the ω shape reflecting plate 6 positioned at the lower section of the mixing tube 2, with
It realizes the effect of double-cyclone, reduces urea crystals risk.
Above embodiments are merely to illustrate the utility model and not limit technical solution described in the utility model, right
The understanding of this specification should be based on person of ordinary skill in the field, although this specification is referring to the above embodiments
Detailed description is had been carried out to the utility model, still, those skilled in the art should understand that, technical field
Technical staff still the utility model can be modified or replaced equivalently, and all do not depart from the essence of the utility model
The technical solution and its improvement of mind and range, should all cover in the scope of the claims of the utility model.
Claims (10)
1. a kind of exhaust aftertreatment mixing arrangement comprising shell and be located at the intracorporal mixing tube of the shell, the shell packet
The second shell for including first shell and being matched with the first shell, wherein the first shell includes to after with first
First cavity of processing unit connection, the second shell includes the second cavity to be connected to the second after-treatment device,
Be characterized in that: the shell is equipped with the demarcation plate for separating first cavity and second cavity, and the demarcation plate is equipped with peace
Fill hole；The mixing tube includes cyclone pipe and the connecting tube that is fabricated separately but links together with the cyclone pipe, the rotation
Flow tube includes the spinning disk in first cavity and the mounting portion positioned at the lower section of the spinning disk, the mounting portion
It is inserted and fixed into the mounting hole, the mounting portion passes through the mounting hole mutually to fix with the connecting tube.
2. exhaust aftertreatment mixing arrangement as described in claim 1, it is characterised in that: the cyclone pipe has round table-like outer
Surface, the spinning disk are divided into two groups along the axis of the cyclone pipe and are arranged on the outer surface.
3. exhaust aftertreatment mixing arrangement as claimed in claim 2, it is characterised in that: the mounting portion is compared to the eddy flow
The other parts of pipe are in flared.
4. exhaust aftertreatment mixing arrangement as claimed in claim 3, it is characterised in that: the exhaust aftertreatment mixing arrangement is set
There are the top positioned at the spinning disk and the mounting base to install urea nozzle, the urea nozzle is to the mixing tube
The urea droplets of middle jet atomization.
5. exhaust aftertreatment mixing arrangement as claimed in claim 3, it is characterised in that: the demarcation plate is located at the first shell
The bottom of body.
6. exhaust aftertreatment mixing arrangement as described in claim 1, it is characterised in that: the first shell and the second shell
Body at least partly mutually connects together.
7. exhaust aftertreatment mixing arrangement as claimed in claim 3, it is characterised in that: the connecting tube, which is equipped with, at least partly to be held
Receive the expansion mouth of the mounting portion.
8. exhaust aftertreatment mixing arrangement as claimed in claim 7, it is characterised in that: the connecting tube, which is equipped with, is located at the expansion
Several areoles of the lower section of oral area.
9. exhaust aftertreatment mixing arrangement as claimed in claim 8, it is characterised in that: the exhaust aftertreatment mixing arrangement packet
Include on the inner wall for being fixed on the connecting tube and be located at the porous plate of the bottom of the connecting tube.
10. exhaust aftertreatment mixing arrangement as described in claim 1, it is characterised in that: the exhaust aftertreatment mixing arrangement
It further include the ω shape reflecting plate positioned at the lower section of the mixing tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821509979.5U CN208763727U (en) | 2018-09-14 | 2018-09-14 | Exhaust aftertreatment mixing arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821509979.5U CN208763727U (en) | 2018-09-14 | 2018-09-14 | Exhaust aftertreatment mixing arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208763727U true CN208763727U (en) | 2019-04-19 |
Family
ID=66135849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821509979.5U Active CN208763727U (en) | 2018-09-14 | 2018-09-14 | Exhaust aftertreatment mixing arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208763727U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110671173A (en) * | 2019-09-29 | 2020-01-10 | 潍柴动力股份有限公司 | Engine aftertreatment system and SCR mixer thereof |
-
2018
- 2018-09-14 CN CN201821509979.5U patent/CN208763727U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110671173A (en) * | 2019-09-29 | 2020-01-10 | 潍柴动力股份有限公司 | Engine aftertreatment system and SCR mixer thereof |
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