CN207229213U - Diesel engine after treatment device - Google Patents
Diesel engine after treatment device Download PDFInfo
- Publication number
- CN207229213U CN207229213U CN201721299752.8U CN201721299752U CN207229213U CN 207229213 U CN207229213 U CN 207229213U CN 201721299752 U CN201721299752 U CN 201721299752U CN 207229213 U CN207229213 U CN 207229213U
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- Prior art keywords
- straight tube
- preceding straight
- bridge piece
- booster
- diesel engine
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Abstract
The utility model discloses a kind of diesel engine after treatment device, including：Catalytic muffler；Booster, the booster are connected with catalytic muffler by discharge duct, and discharge duct includes：Preceding straight tube, it is horizontally disposed, and preceding straight tube is connected with booster, and the junction of preceding straight tube and booster is provided tiltedly with nozzle, and the length of preceding straight tube is more than 2 times of the diameter of preceding straight tube；Straight tube afterwards, one end of its setting catalytic muffler erect；And bridge piece, it connects rear straight tube and preceding straight tube, has bellows segment between rear straight tube and bridge piece；Wherein preceding straight tube, rear straight tube are identical with the pipe radius of bridge piece.The device improves urea Crystallization.
Description
Technical field
It the utility model is related to diesel engine vent gas post processing field, more particularly to a kind of diesel engine after treatment device.
Background technology
In diesel engine vent gas post processing, SCR schemes have obvious excellent in IV exhaust gas from diesel vehicle discharge treating system of state
Gesture, and urea for vehicle (adding indigo plant) is the required additive of SCR schemes.Blue tube is that connection adds blue tank, metering ejector pump, nozzle with
For adding the blue pipeline in internal system flowing.At present, urea crystals are frequently present of on the pipeline of blue tube, and then block exhaust
Pipe, causes engine catastrophe failure.
The information for being disclosed in the background section is merely intended to understanding of the increase to the general background of the utility model, and
It is not construed as recognizing or implies that the information structure has been existing well known to persons skilled in the art in any form
Technology.
Utility model content
The purpose of this utility model is to provide a kind of diesel engine after treatment device, improves urea Crystallization.
To achieve the above object, the utility model provides a kind of diesel engine after treatment device, including：Catalytic muffler；
Booster, the booster are connected with catalytic muffler by discharge duct, and discharge duct includes：Preceding straight tube, it is horizontally disposed, preceding
Straight tube is connected with booster, and the junction of preceding straight tube and booster is provided tiltedly with nozzle, and the length of preceding straight tube is more than preceding straight tube
2 times of diameter；Straight tube afterwards, one end of its setting catalytic muffler erect；And bridge piece, it is by rear straight tube and preceding straight tube
Connect, there is bellows segment between rear straight tube and bridge piece；The pipe radius of wherein preceding straight tube, rear straight tube and bridge piece
It is identical.
Preferably, bridge piece is bent to another extreme direction of catalytic muffler.
Preferably, preceding straight tube with bridge piece by being welded to connect, the weld seam of preceding straight tube and bridge piece and preceding straight tube
Interior walls be smooth transition.
Compared with prior art, the utility model has the advantages that：Pass through straight tube and increasing before nozzle is arranged on
The junction of depressor, i.e. nozzle are set close to booster front end, and the length of preceding straight tube is more than 2 times of the diameter of preceding straight tube, at the same time
Straight tube after setting, one end of its setting catalytic muffler erect, rear straight tube and the preceding straight tube are connected by bridge piece
Pick up and, wherein the preceding straight tube, the rear straight tube are identical with the pipe radius of the bridge piece, can be not provided with mixing
Device, the indigo plant that adds sprayed through nozzle can be sufficiently mixed in discharge duct, and Crystallization and urea decomposition mixed effect are all good.
Brief description of the drawings
Fig. 1 is the structure diagram of diesel engine after treatment device according to the present utility model.
Embodiment
Below in conjunction with the accompanying drawings, specific embodiment of the present utility model is described in detail, it is to be understood that this practicality
New protection domain and from the limitation of embodiment.
Explicitly indicated that unless otherwise other, otherwise in entire disclosure and claims, term " comprising " or its change
Change such as "comprising" or " including " etc. and will be understood to comprise stated element or part, and do not exclude other members
Part or other parts.
As shown in Figure 1, according to a kind of diesel engine after treatment device of the utility model embodiment, including：Catalysis
Silencer 1 and booster 2, the booster 2 are connected with catalytic muffler 1 by discharge duct, and discharge duct includes preceding straight tube 31,
It is horizontally disposed, and preceding straight tube 31 is connected with booster 2, and the junction of preceding straight tube 31 and booster 2 is provided tiltedly with nozzle 34, nozzle
34 optimal setting angles are 60 °~70 ° scopes.The length of preceding straight tube 31 is more than 2 times of the diameter of preceding straight tube 31.Straight tube afterwards
One end of the 32 setting catalytic mufflers 1 erect.Bridge piece 33 connects rear straight tube 32 and preceding straight tube 31, rear straight tube 32
There is bellows segment between bridge piece 33；Wherein preceding straight tube 31, rear straight tube 32 are identical with the pipe radius of bridge piece 33.
As a kind of preferred embodiment, bridge piece 33 is bent to another extreme direction of catalytic muffler 1.
As a kind of preferred embodiment, preceding straight tube 31 with bridge piece 33 by being welded to connect, preceding straight tube 31 and connecting bending
The interior walls be smooth transition of the weld seam of pipe 33 and preceding straight tube 31.
In such scheme, by the junction of straight tube 31 and booster before nozzle is arranged on, i.e., nozzle is close to booster
Front end is set, and the length of preceding straight tube 31 is more than 2 times of the diameter of preceding straight tube, while straight tube after setting, described in its setting erect
One end of catalytic muffler, rear straight tube and the preceding straight tube are connected by bridge piece, wherein the preceding straight tube, it is described after
Straight tube is identical with the pipe radius of the bridge piece, can be not provided with mixer, adding indigo plant and can be vented through nozzle injection
It is sufficiently mixed in pipeline, Crystallization and urea decomposition mixed effect are all good.
To sum up, the diesel engine after treatment device of the present embodiment, passes through the connection of straight tube and booster before nozzle is arranged on
Place, i.e. nozzle are set close to booster front end, and the length of preceding straight tube is more than 2 times of the diameter of preceding straight tube, while straight tube after setting,
One end of its setting catalytic muffler erect, rear straight tube and the preceding straight tube are connected by bridge piece, wherein
The preceding straight tube, the rear straight tube are identical with the pipe radius of the bridge piece, can be not provided with mixer, be sprayed through nozzle
Add indigo plant and can be sufficiently mixed in discharge duct, it is all good that Crystallization and urea decompose mixed effect.
The description of the foregoing specific exemplary embodiment to the utility model be in order to illustrate and illustration purpose.These
Description is not wishing to for the utility model to be defined to disclosed precise forms, and it will be apparent that according to the above instruction, can carry out
Many change and variations.The purpose of selecting and describing the exemplary embodiment is that explain the certain principles of the utility model
And its practical application, so that those skilled in the art can realize and utilize a variety of examples of the utility model
Property embodiment and various chooses and changes.The scope of the utility model is intended to by claims and its waits similar shape
Formula is limited.
Claims (3)
- A kind of 1. diesel engine after treatment device, it is characterised in that including：Catalytic muffler；Booster, the booster are connected with the catalytic muffler by discharge duct, and the discharge duct includes：Preceding straight tube, it is horizontally disposed, and the preceding straight tube is connected with the booster, the connection of the preceding straight tube and the booster Place is provided tiltedly with nozzle, and the length of the preceding straight tube is more than 2 times of the diameter of the preceding straight tube；Straight tube afterwards, one end of its setting catalytic muffler erect；AndBridge piece, it connects straight tube after described and the preceding straight tube, it is described after between straight tube and the bridge piece With bellows segment；Wherein described preceding straight tube, the rear straight tube are identical with the pipe radius of the bridge piece.
- 2. diesel engine after treatment device according to claim 1, it is characterised in that the bridge piece disappears to the catalysis Another extreme direction bending of sound device.
- 3. diesel engine after treatment device according to claim 1, it is characterised in that the preceding straight tube and the bridge piece By being welded to connect, the preceding straight tube and the weld seam of the bridge piece and the interior walls be smooth transition of the preceding straight tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721299752.8U CN207229213U (en) | 2017-10-10 | 2017-10-10 | Diesel engine after treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721299752.8U CN207229213U (en) | 2017-10-10 | 2017-10-10 | Diesel engine after treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207229213U true CN207229213U (en) | 2018-04-13 |
Family
ID=61850233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721299752.8U Active CN207229213U (en) | 2017-10-10 | 2017-10-10 | Diesel engine after treatment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207229213U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107559081A (en) * | 2017-10-10 | 2018-01-09 | 广西玉柴机器股份有限公司 | Diesel engine after treatment device |
-
2017
- 2017-10-10 CN CN201721299752.8U patent/CN207229213U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107559081A (en) * | 2017-10-10 | 2018-01-09 | 广西玉柴机器股份有限公司 | Diesel engine after treatment device |
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