CN209855888U

CN209855888U - Compact mixer and selective catalytic reduction system including the same

Info

Publication number: CN209855888U
Application number: CN201920748418.9U
Authority: CN
Inventors: 张强
Original assignee: Virginia Exhaust Control Technology Development (shanghai) Co Ltd
Current assignee: Virginia Exhaust Control Technology Development (shanghai) Co Ltd
Priority date: 2019-05-23
Filing date: 2019-05-23
Publication date: 2019-12-27
Anticipated expiration: 2029-05-23

Abstract

The utility model provides a compact blender reaches selective catalytic reduction system including it, compact blender includes the barrel, air inlet and nozzle are installed to the up end of barrel at least one guiding device is installed to one side of air inlet for gaseous edge the inner wall of barrel flows, the air inlet with the both ends at the up end of barrel are arranged respectively to the nozzle. The selective catalytic reduction system further comprises a compact mixer as described above. The utility model discloses compact blender reaches selective catalytic reduction system including it can solve the crystallization problem effectively through the structure of improving the blender, moreover blender simple structure is compact, low in manufacturing cost, and mixing efficiency is higher.

Description

Compact mixer and selective catalytic reduction system including the same

Technical Field

The utility model relates to an automobile field, in particular to compact blender reaches selective catalytic reduction system including it.

Background

Selective Catalytic Reduction (SCR) refers to the use of a reducing agent (e.g., NH) in the presence of a catalyst₃Liquid ammonia, urea) to "selectively" with NO in the flue gas_xReacting and generating nontoxic and pollution-free N₂And H₂O。

In the automotive field, Selective Catalytic Reduction (SCR) is a chemical process that converts nitrogen oxides (NOx) into diatomic nitrogen and water, along with small amounts of carbon dioxide. A process for converting the harmful NOx emissions of diesel engines to harmless nitrogen and water by adding automotive grade urea (known as diesel exhaust fluid DEF).

In the prior art, the mixer is arranged on a pipeline behind the engine and in front of the postprocessor, and cannot meet the requirements of flexible installation and arrangement adjustment of customers, so that the mixer needs to be integrated on the postprocessor based on the requirements of the customers for solving the crystallization problem.

The existing integrated mixer has the problems of complex design, higher cost, poor mixing efficiency and the like, and high market feedback reject ratio, and can not effectively solve the requirement of zero crystallization of customers.

In view of the above, those skilled in the art have developed mixer structures in an attempt to overcome the above-mentioned problems.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a compact blender and selective catalytic reduction system including it in order to overcome among the prior art blender design complicacy, defect such as the cost is higher and mixing efficiency is poor.

The utility model discloses a solve above-mentioned technical problem through following technical scheme:

the utility model provides a compact blender, includes the barrel, its characterized in that, air inlet and nozzle are installed to the up end of barrel one side of air inlet is installed at least one guiding device for gaseous edge the inner wall of barrel flows, the air inlet with the nozzle is arranged respectively at the both ends of the up end of barrel.

According to an embodiment of the utility model, the blender still includes air intake baffle, air intake baffle installs left side in the air inlet.

According to the utility model discloses an embodiment, guiding device is the guide plate, the guide plate is relative the central symmetric position of air inlet arranges.

According to an embodiment of the present invention, the deflector is 4 inches from the air inlet.

According to an embodiment of the utility model, the guide plate adopts saddle type symmetrical structure.

According to the utility model discloses an embodiment, the right side of guide plate is provided with the guiding gutter.

According to an embodiment of the utility model, the baffle that admits air with the guide plate saddle is parallel.

According to the utility model discloses an embodiment, the baffle that admits air adopts the arc surface, and the guide air current turns to one side of guide plate.

According to the utility model discloses an embodiment, the up end of barrel sets up to the inlet end cover, the flange is installed to the air inlet.

The utility model discloses a selective catalytic reduction system, its characteristics lie in, selective catalytic reduction system still includes as above compact blender.

The utility model discloses an actively advance the effect and lie in:

the utility model discloses compact blender reaches selective catalytic reduction system including it can solve the crystallization problem effectively through the structure of improving the blender, moreover blender simple structure is compact, low in manufacturing cost, and mixing efficiency is higher.

Drawings

The above and other features, properties and advantages of the present invention will become more apparent from the following description of the embodiments with reference to the accompanying drawings, in which like reference numerals refer to like features throughout, and in which:

fig. 1 is a perspective view of the compact mixer of the present invention.

Fig. 2 is a top view of the compact mixer of the present invention.

Fig. 3 is a cross-sectional view taken along line a-a of fig. 2.

[ reference numerals ]

Cylinder 10

Air inlet 11

Nozzle 12

Air inlet baffle 13

Flow guide plate 14

Air inlet end cover 15

Flange 16

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.

Further, although the terms used in the present invention are selected from publicly known and used terms, some of the terms mentioned in the description of the present invention may be selected by the applicant at his or her discretion, the detailed meanings of which are described in relevant parts of the description herein.

Furthermore, it is required that the present invention is understood, not simply by the actual terms used but by the meaning of each term lying within.

Fig. 1 is a perspective view of the compact mixer of the present invention. Fig. 2 is a top view of the compact mixer of the present invention. Fig. 3 is a cross-sectional view taken along line a-a of fig. 2.

As shown in fig. 1 to 3, the utility model discloses a compact mixer, including barrel 10, install air inlet 11 and nozzle 12 at the up end of barrel 10, install at least one guiding device in one side of air inlet 11 for gaseous edge the inner wall of barrel flows, and air inlet 11 and nozzle 12 are arranged respectively at the both ends of the up end of barrel.

Preferably, the mixer further includes an intake baffle 13, and the intake baffle 13 is installed at the left side in the intake port 11.

Further, the flow guiding device is preferably a flow guiding plate 14, and the flow guiding plate 14 is arranged in a symmetrical position relative to the center of the air inlet 11. Baffle 14 is preferably 4 inches from inlet 11. Baffle 14 preferably takes the form of a saddle-type symmetrical structure.

In addition, a guide groove is provided on the right side of the guide plate 14. Strengthen the guide air current, the cooperation baffle that admits air makes the air current clockwise rotation to intensive mixing urea reaches and improves mixing efficiency, and reduces the effect of crystallization.

In particular, here the intake baffle 13 is parallel to the deflector saddle.

Preferably, the air intake baffle 13 is a circular arc surface that directs the air flow to one side of the baffle 14.

Specifically, the upper end surface of the cylinder 10 is provided with an air inlet end cover 15, and the air inlet 11 is provided with a flange 16. Connected to the engine outlet duct by a flange 16.

The utility model also discloses a selective catalytic reduction system, it still includes as above compact blender.

According to the structural description, the guide plate 14 is designed in a saddle-shaped symmetrical mode, the guide groove is additionally formed in the right side, the guide airflow is enhanced, and the guide groove is matched with the air inlet baffle 13 to enable the airflow to rotate clockwise, so that urea is fully mixed, the mixing efficiency is improved, and the crystallization is reduced.

When the mixer is used, urea is sprayed from the nozzle 12 and converted into ammonia, and the structure of the guide plate 14 guides gas to flow clockwise, so that the gas is prevented from being fully mixed with the ammonia below the guide plate 14 along the mixer. When the gas flow enters the mixer and the urea reducing agent is sprayed by the injector, the two substances are mixed at one side of the mixer to form gas flow with ammonia gas, so that a film is prevented from forming at the bottom of the mixer.

The utility model discloses compact blender and selective catalytic reduction system including it is a novel, simple incasement blender, through handling the back, can solve the sediment problem effectively with lower cost and less part.

To sum up, the utility model discloses compact blender and selective catalytic reduction system including it can solve the crystallization problem effectively through the structure of improving the blender, moreover blender simple structure is compact, low in manufacturing cost, and mixing efficiency is higher.

Although particular embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these are examples only and that the scope of the present invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are all within the scope of the invention.

Claims

1. The utility model provides a compact blender, includes the barrel, its characterized in that, air inlet and nozzle are installed to the up end of barrel one side of air inlet is installed at least one guiding device for gaseous edge the inner wall of barrel flows, the air inlet with the nozzle is arranged respectively at the both ends of the up end of barrel.

2. The compact mixer of claim 1, further comprising an intake baffle mounted to the left within the intake opening.

3. The compact mixer of claim 2, wherein the flow directing device is a baffle disposed symmetrically about the center of the inlet.

4. The compact mixer of claim 3, wherein the baffle is 4 inches from the air inlet.

5. The compact mixer of claim 3, wherein the baffles are in a saddle-type symmetrical configuration.

6. The compact mixer of claim 5, wherein the right side of the baffle is provided with a baffle slot.

7. The compact mixer of claim 3 wherein said intake baffle is parallel to said deflector saddle.

8. The compact mixer of claim 7, wherein said inlet baffle is arcuate and directs the flow to one side of said baffle.

9. The compact mixer of claim 1, wherein the upper end face of the barrel is provided as an inlet end cap, the inlet being flanged.

10. A selective catalytic reduction system, further comprising a compact mixer as recited in any of claims 1-9.