CN103184915B - Screw type adblue mixer - Google Patents
Screw type adblue mixer Download PDFInfo
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- CN103184915B CN103184915B CN201110450905.5A CN201110450905A CN103184915B CN 103184915 B CN103184915 B CN 103184915B CN 201110450905 A CN201110450905 A CN 201110450905A CN 103184915 B CN103184915 B CN 103184915B
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- volute
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Abstract
The invention discloses a screw type adblue mixer. The screw type adblue mixer comprises a volute and an intake pipeline communicated with the volute. The upper part of the volute has a vertical cylindrical structure, and the lower part of the volute has a necked conical structure. A screw cap is arranged at the top end of the volute. A screw structure is arranged outside the screw cover, and is spirally downward along the periphery of the volute. A section of a round tube is arranged on the middle part of the screw cap, and is used for mounting an adblue nozzle. The intake pipeline has a tubular structure of which the internal diameter is gradually reduced along an intake direction, and is connected with the screw structure of the screw cap along the tangential direction of the periphery of the volute, so that the intake pipeline and the screw cover form a smooth screw channel. The screw type adblue mixer is simple in structure, reliable in working, free of blades, large in effective circulation area and low in exhaust resistance, and the mixing efficiency and the mixing uniformity of adblue liquid and exhaust gases are improved.
Description
Technical field
The present invention relates to tail gas treatment device technical field, relate to a kind of screw type adblue mixer of SCR reprocessing in particular.
Background technique
Existing for SCR reprocessing add blue mixer adopt be all that blade type adds blue mixer substantially, this add blue mixer mainly comprise in one establish the straight tube of blade and be located at straight tube side add cyan nozzle, engine exhaust flows into from one end of straight tube, flow out from the other end, adding cyan nozzle is in tilted layout in straight tube side, add blue liquid and straight tube inwall and blade to collide second-time breakage occurs, and air-flow forms multiple whirlpool under the guide functions of blade, thus reach and will add blue liquid and the mixed uniformly object of exhaust.This blade type adds blue mixer and there is following shortcoming: one is that adding of spraying into easily to stick to after blue drop directly bumps against with hybrid blade that it is surperficial and form crystallization, and then blocks gas exhaust piping; Two is tilt to spray in mixer owing to adding blue liquid, causes adding blue liquid and mixes with waste gas uneven; Three is require longer straight length before and after mixer, and layout is difficult to reach requirement onboard; Four is because the stop of blade makes the effective actual internal area of outlet pipe reduce, and causes exhaust resistance larger.Above-mentioned " adding indigo plant " refers to the aqueous solution of urea of current internal-combustion engine SCR aftertreatment system.
Summary of the invention
The invention provides a kind of screw type adblue mixer, its structure be simple, reliable operation, there is not blade, valid circulation area is large, and exhaust resistance is little, and improves the mixing efficiency and mixing uniformity of adding blue liquid and exhaust.
The present invention adopts following technological scheme to realize above-mentioned purpose: a kind of screw type adblue mixer, the admission line including volute and be communicated with it, the top of this volute is vertical cylindrical structure, bottom is the cone barrel structure closed up, the top of this volute is provided with screw lid, the outside of this screw lid is along the downward helix structure of volute peripheral helical, the middle part of this screw lid is provided with one section of pipe and adds cyan nozzle in order to install, this admission line is that internal diameter reduces tubular structure gradually along airintake direction, and this admission line is connected along the tangent direction of volute circumference and the helix structure of screw lid, admission line and screw lid is made to form level and smooth helical duct.
Further illustrating as such scheme:
Preferably, the lead angle of the helix structure of described screw lid is 10 ° ~ 20 °.
Preferably, the airintake direction of described admission line is horizontal by 0 ° ~ 20 °.
Preferably, described volute bottom is provided with two sections of cone barrel structures from top to bottom, and the internal diameter of these two sections cone cylinders from top to bottom reduces gradually.
Preferably, the exhaust outlet place of described volute bottom is provided with flange, for the connection of volute and subsequent pipeline.
Preferably, exhaust gas intake port place of described admission line is provided with flange, for the connection of admission line and front and continued pipeline.
Preferably, the lead angle of the helix structure of described screw lid is 15 °.
The beneficial effect that the present invention adopts above technological scheme to reach is:
1. the air-flow rotated in screw type adblue mixer of the present invention is guided by the helix structure of volute produce completely, and structure is simple, reliable operation.
2. screw type adblue mixer of the present invention add the screw lid central authorities that cyan nozzle is arranged in volute top, what this just made to spray into from source add blue liquid be vented mix evenly.
3. the admission line of screw type adblue mixer of the present invention adopts reducing design, the partial pressure of exhaust can be converted into kinetic energy, strengthen the speed of swirling eddy in volute, improve mixing uniformity.
4. the volute bottom of screw type adblue mixer of the present invention adopts the cone barrel structure closed up, and the drop of volute near wall to be declined low falling speed at the force action of centrifugal force, gravity, wall support power, extends incorporation time, improve mixing efficiency.
5. the volute of screw type adblue mixer of the present invention is vertically arrange, the indigo plant of adding sprayed into not easily adheres to volute wall and produces crystallization.
6. screw type adblue mixer of the present invention is to the not requirement of the length of straight length before and after mixer, is convenient to the layout of in-vehicle device, applied widely.
7. because there is not blade in screw type adblue mixer of the present invention, so effectively actual internal area is large, exhaust resistance is little.
Accompanying drawing explanation
Fig. 1 is the cross-sectional schematic of screw type adblue mixer of the present invention;
Fig. 2 is the right elevation of Fig. 1;
Fig. 3 is the plan view of Fig. 1.
Description of reference numerals:
1-exhaust gas intake port, 2-exhaust outlet, 3-admission line, 4-screw lid, 5-bores cylinder, and 6-adds indigo plant, 7-volute, 8-pipe.
Embodiment
For setting forth 26S Proteasome Structure and Function of the present invention further, below in conjunction with accompanying drawing and preferred embodiment, the present invention is elaborated, but be to be understood that protection scope of the present invention not by the restriction of embodiment.
Fig. 1 to Fig. 3 is respectively the cross-sectional schematic of screw type adblue mixer of the present invention, right elevation and plan view, composition graphs 1, Fig. 2 and Fig. 3 is known, the present invention is a kind of screw type adblue mixer, the admission line 3 including volute 7 and be communicated with it, the top of this volute 7 is vertical cylindrical structure, bottom is cone cylinder 5 structure closed up, the top of this volute 7 is provided with screw lid 4, the outside of this screw lid 4 is along the downward helix structure of volute 7 peripheral helical, the middle part of this screw lid 4 is provided with one section of pipe 8 and adds cyan nozzle in order to install, this admission line 3 reduces tubular structure for internal diameter gradually along airintake direction, and this admission line 3 is connected along the tangent direction of volute 7 circumference with the helix structure of screw lid 4, admission line 3 and screw lid 4 is made to form level and smooth helical duct.The lead angle of the helix structure of this screw lid 4 is 10 ° ~ 20 °, concrete angle can be determined according to the concrete size of volute 7, the exhaust entering volute 7 preferably can be made to rotate a circle under the guiding of helix structure arrive the exhaust outlet 2 bottom volute 7, in the present embodiment, the value of this lead angle is 15 °.The airintake direction of admission line 3 can be that substantially horizontal also can horizontal by the angle of 0 ° ~ 20 °, for making the formation helical duct that admission line 3 and the helix structure of screw lid 4 can be more level and smooth, in the present embodiment, the airintake direction of admission line 3, horizontal by 15 ° of angles, is just in time consistent with the lead angle of screw lid 4.For extending exhaust and the incorporation time of adding blue 6 further, cone cylinder 5 structure of volute 7 bottom can be set to two sections, the internal diameter of these two sections cone cylinders 5 from top to bottom reduces gradually, blue 6 drops that add of volute 7 near wall to be declined low falling speed at the force action of centrifugal force, gravity, wall support power, and then prolongation incorporation time, improve mixing efficiency.Exhaust gas intake port 1 place of the exhaust outlet 2 in volute 7 bottom and admission line 3 is equipped with flange, for being connected with other associated conduit.
Be only one of present pre-ferred embodiments shown in the above embodiment of the present invention and accompanying drawing, can not limit to the present invention with this, under the condition not departing from marrow of the present invention, any variation that those skilled in the art do, all belongs to protection scope of the present invention.
Claims (7)
1. a screw type adblue mixer, it is characterized in that, there is not blade in described screw type adblue mixer, the admission line including volute and be communicated with it, the top of this volute is vertical cylindrical structure, bottom is the cone barrel structure closed up, the top of this volute is provided with screw lid, the outside of this screw lid is along the downward helix structure of volute peripheral helical, the middle part of this screw lid is provided with one section of pipe and adds cyan nozzle in order to install, this admission line is that internal diameter reduces tubular structure gradually along airintake direction, and this admission line is connected along the tangent direction of volute circumference and the helix structure of screw lid, admission line and screw lid is made to form level and smooth helical duct.
2. screw type adblue mixer according to claim 1, is characterized in that, the lead angle of the helix structure of described screw lid is 10 ° ~ 20 °.
3. screw type adblue mixer according to claim 1 and 2, is characterized in that, the airintake direction of described admission line is horizontal by 0 ° ~ 20 °.
4. screw type adblue mixer according to claim 1, is characterized in that, described volute bottom is provided with two sections of cone barrel structures from top to bottom, and the internal diameter of these two sections cone cylinders from top to bottom reduces gradually.
5. screw type adblue mixer according to claim 1, is characterized in that, the exhaust outlet place of described volute bottom is provided with flange, for the connection of volute and subsequent pipeline.
6. screw type adblue mixer according to claim 1, is characterized in that, exhaust gas intake port place of described admission line is provided with flange, for the connection of admission line and front and continued pipeline.
7. screw type adblue mixer according to claim 2, is characterized in that, the lead angle of the helix structure of described screw lid is 15 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110450905.5A CN103184915B (en) | 2011-12-29 | 2011-12-29 | Screw type adblue mixer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110450905.5A CN103184915B (en) | 2011-12-29 | 2011-12-29 | Screw type adblue mixer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103184915A CN103184915A (en) | 2013-07-03 |
| CN103184915B true CN103184915B (en) | 2015-02-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110450905.5A Active CN103184915B (en) | 2011-12-29 | 2011-12-29 | Screw type adblue mixer |
Country Status (1)
| Country | Link |
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| CN (1) | CN103184915B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11105241B2 (en) | 2017-08-30 | 2021-08-31 | Faurecia Emissions Control Technologies, Usa, Llc | Venturi style injector cone |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0555746A1 (en) * | 1992-02-10 | 1993-08-18 | Man Nutzfahrzeuge Ag | Device for catalytic NOx reduction |
| CN201902251U (en) * | 2010-12-15 | 2011-07-20 | 杭州银轮科技有限公司 | Mixing device of automobile-used urea SCR system |
| CN202402110U (en) * | 2011-12-29 | 2012-08-29 | 广西玉柴机器股份有限公司 | Spiral AdBlue mixer |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2416718A (en) * | 2004-07-29 | 2006-02-08 | Eminox Ltd | Gas treatment apparatus |
| US7971433B2 (en) * | 2008-02-14 | 2011-07-05 | Ford Global Technologies, Llc | Helical exhaust passage |
| WO2011110885A1 (en) * | 2010-03-11 | 2011-09-15 | Renault Trucks | Mixing system for an exhaust gas after-treatment arrangement |
-
2011
- 2011-12-29 CN CN201110450905.5A patent/CN103184915B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0555746A1 (en) * | 1992-02-10 | 1993-08-18 | Man Nutzfahrzeuge Ag | Device for catalytic NOx reduction |
| CN201902251U (en) * | 2010-12-15 | 2011-07-20 | 杭州银轮科技有限公司 | Mixing device of automobile-used urea SCR system |
| CN202402110U (en) * | 2011-12-29 | 2012-08-29 | 广西玉柴机器股份有限公司 | Spiral AdBlue mixer |
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| Publication number | Publication date |
|---|---|
| CN103184915A (en) | 2013-07-03 |
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