CN203223276U - Atomization nozzle for urea solution - Google Patents
Atomization nozzle for urea solution Download PDFInfo
- Publication number
- CN203223276U CN203223276U CN 201320069839 CN201320069839U CN203223276U CN 203223276 U CN203223276 U CN 203223276U CN 201320069839 CN201320069839 CN 201320069839 CN 201320069839 U CN201320069839 U CN 201320069839U CN 203223276 U CN203223276 U CN 203223276U
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- diaphragm
- needle bar
- nozzle body
- liquid
- jet
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Abstract
The utility model relates to an atomization nozzle for a urea solution. The atomization nozzle comprises a nozzle upper cover, a nozzle body, a liquid tube, an atomization air tube, an injection joint, a valve needle bar, a diaphragm and a valve needle-base joint. One end of the valve needle bar is connected with the diaphragm. The diaphragm is configured to play an operational effect on a spring on the diaphragm. Under a compressed air effect, the diaphragm controls vertical motion of the valve needle bar in a maneuverable manner. The valve needle bar is provided with a fluid-path sealing ring for closing and opening a path between a liquid inlet pipeline and the liquid tube on the body in the maneuverable manner. In the atomization nozzle for the urea solution, a urea liquid loop and an atomization air loop are completely separated, and mixing atomization of the urea solution is completed in an injection-joint mixing outlet mounted in the injection joint. The atomization nozzle provided by the utility model has a novel structure, crystal of urea liquid is reduced, an atomization effect is raised, stability is strong and cost is low.
Description
[technical field]
The utility model exemplary embodiment relates to a kind of urea liquid atomization spray cap in the diesel engine exhaust after-treatment system.Be used in the urea liquid atomized spray of diesel motor exhaust after-treatment device.
[background technique]
Along with country to the improving constantly of vehicular emission standard, the vehicle tai-gas clean-up system also enjoys the concern of vehicle manufacturers day by day, wherein the diesel engine vent gas after-treatment device is as an important component part of diesel-oil vehicle.
In diesel engine SCR after-treatment system, the urea liquid atomization spray cap is one of very important constituent elements.In present urea liquid ejecting system, the urea liquid atomization spray cap that uses is the form of mixing in the air, air contacts too early with urea in this method, cause urea easily in spout and inner formation crystallization, the plug nozzle mouth, the jet pressure instability causes accuracy of spray to descend, and can not satisfy state four and state's five emission standards to the requirement of precision metered injection.Adopt the shower nozzle of the outer mixed form of air not carry out closing control completely to urea pipe simultaneously at present, can not finish the evacuation procedure of urea metering pump like this; The urea spout does not have noticeable degree in addition, sprays the oral area urea liquid and is exposed in the automobile engine exhaust pipe road easy contaminated obstruction.
[summary of the invention]
The purpose of this utility model is exactly will solve above-mentioned deficiency and a kind of urea liquid atomization spray cap is provided; Atomizing effect is good, and is non-crystallizable, and cost is low, and highly stable.
Design a kind of urea liquid atomization spray cap for achieving the above object, comprise shower nozzle loam cake, nozzle body, liquid line, atomized air tube, jet-sub, needle bar, diaphragm, needle seated connection head, it is characterized in that: cover on the described shower nozzle and be provided with feed liquor interface and intake interface; Described nozzle body is provided with feed liquor pipeline, air inlet pipeline, diaphragm chamber, overflow hole; Described shower nozzle loam cake link to each other with nozzle body and pressuring action on diaphragm.Pipeline, diaphragm chamber, overflow hole; Described shower nozzle loam cake link to each other with nozzle body and pressuring action on diaphragm.The feed liquor interface that is covered with on the described shower nozzle and intake interface are connected with feed liquor pipeline and the air inlet pipeline that described nozzle body is provided with respectively, and described nozzle body is provided with air inlet pipeline and is communicated in the diaphragm chamber that arranges on the nozzle body.
An end connects described diaphragm on the described needle bar, and described diaphragm is arranged on the effect of spring-operated of top, and described diaphragm can move up and down under the effect of the air pressure of air inlet pipeline and spring.
Described needle bar is arranged in the liquid line and by the linkage from top to bottom of diaphragm operability; Described needle bar also arranges has installed Sealing, and the diaphragm chamber on the described nozzle body and liquid line are isolated.
Described needle bar one end is taper, becomes the effect of switch valve with described needle seated connection capitiform.
Described liquid line is arranged in the atomized air tube, and an end is communicated with the liquid line of described nozzle body, and the other end links to each other with described pintle valve seat joint.
What described needle bar was provided with liquid road seal ring operability closes or opens feed liquor pipeline on the main body and the path between the liquid line;
Described jet-sub is provided with the jet-sub suction port, is communicated with the air atomizing pipe; Described jet-sub is communicated with described liquid line by described pintle valve seat joint, also is provided with the jet-sub mixed export in the described jet-sub, and Way out can be the vertical or certain angle of substantially horizontal.
The utility model is compared with prior art, has the following advantages:
1. the atomizing air loop separates fully with the urea liquid solution loop, can not produce internal crystallization.
2. the opening and closing of urea liquid path are controlled by air pipe line, can realize the evacuation procedure of urea pump.
3. the outlet port on urea liquid road is provided with needle-valve, and when the urea liquid atomization spray cap was not worked, needle-valve was closed, can avoid in the automobile exhaust pipeline pollutant to the outlet urea liquid pollution and crystallization.
4. the air pressure by the control air pipe line comes moving up and down of control valve shank, finishes the automatic cleaning action to the urea liquid outlet port.
5, the mixed aerosol of urea is finished at jetburner, has improved atomizing effect.
6, the utility model novel structure, stability is strong, and cost is low.
[description of drawings]
Fig. 1 is an example structure schematic representation of the present utility model:
Fig. 2 is another example structure schematic representation of the present utility model:
12 feed liquor interfaces, 13 springs
14 diaphragms, 15 Sealings
16 liquid lines, 17 liquid road seal rings
18 liquid lines, 19 atomized air tube
20 intake interfaces, 21 shower nozzle loam cakes
22 air inlet pipelines, 23 diaphragm chambers
24 nozzle body, 25 overflow holes
26 needle bars, 27 pintle valve seat joints
28 jet-subs, 30 jet-sub suction ports
32 jet-sub mixed exports
[embodiment]
Below describing only is exemplary in essence, and can not be in restriction this application model utility or use.Should be understood that corresponding reference character is represented identical or corresponding parts and feature in the accompanying drawings.
The utility model comprises: shower nozzle loam cake 21, nozzle body 24, liquid line 18, atomized air tube 19, jet-sub 28, needle bar 26, diaphragm 14, pintle valve seat joint 27, spring 13.Shower nozzle loam cake 21 is provided with feed liquor interface 12, intake interface 20; Nozzle body 24 is provided with liquid line 16, air inlet pipeline 22, diaphragm chamber 23, overflow hole 25; Jet-sub 28 is provided with jet-sub suction port 30, jet-sub mixed export 32.Needle bar 26 is established to install and is provided with 15 Sealings 15 and liquid road seal ring 17.
Further specify below below in conjunction with accompanying drawing the utility model being done:
The utility model working principle:
As shown in Figure 1, when the metering conveying pump emptying state, urea liquid enters liquid line 16 by the feed liquor interface 12 of shower nozzle loam cake 21, at this moment air valve is closed condition, needle bar 26 is in pan position down under the effect of spring 13, this moment, liquid road seal ring 17 was closed the urea of liquid line 16, and the pressure of liquid line 16 increases, and metering conveying pump is finished emptying.
When metering conveying pump enters spray regime, air valve is opened, pressurized air enters air inlet pipeline 22 by the intake interface 20 of shower nozzle loam cake 21, enter diaphragm chamber 23 again, air pressure acts on the diaphragm 14 and overcomes the pressure of spring 13, make on the needle bar 26 of interlock and move, the liquid road seal ring 17 that is installed in needle bar 26 moves on also, open liquid line 16, urea liquid enters in the liquid line 18, opened needle-valve when moving on the needle bar 26, urea liquid enters jet-sub mixed export 32 by jet-sub liquid entering hole 31; The pressurized air that meanwhile enters diaphragm chamber enters atomized air tube 19 through behind the overflow hole 25, arrives jet-sub suction port 30 again, blends the oral area mixed aerosol with urea liquid from liquid line 18 in jet-sub and ejects.
In this specification, the utility model only is described with reference to its certain embodiments, also be another kind of embodiment as Fig. 2, still can make various modifications and variations obviously and not deviate from spirit and scope of the present utility model, therefore, the utility model specification and accompanying drawing should be considered to illustrative
The utility model is not subjected to the restriction of above-mentioned mode of execution; other any do not deviate from change, the modification done under spiritual essence of the present utility model and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within the protection domain of the present utility model.
Claims (7)
1. urea liquid atomization spray cap, comprise the shower nozzle loam cake, nozzle body, liquid line, atomized air tube, jet-sub, the needle bar, diaphragm, needle seated connection head, it is characterized in that: cover on the described shower nozzle and be provided with feed liquor interface and intake interface, described nozzle body is provided with the feed liquor pipeline, air inlet pipeline, diaphragm chamber, overflow hole, described shower nozzle loam cake link to each other with nozzle body and pressuring action on diaphragm, the feed liquor interface that is covered with on the described shower nozzle and intake interface are connected with feed liquor pipeline and the air inlet pipeline that described nozzle body is provided with respectively, and described nozzle body is provided with air inlet pipeline and is communicated in the diaphragm chamber that arranges on the described nozzle body.
2. urea liquid atomization spray cap according to claim 1, it is characterized in that an end connects described diaphragm on the described needle bar, described diaphragm is arranged on the effect of spring-operated of top, and described diaphragm can move up and down under the effect of the air pressure of air inlet pipeline and spring.
3. urea liquid atomization spray cap according to claim 2, it is characterized in that described needle bar is arranged in the liquid line and by the linkage from top to bottom of diaphragm operability, described needle bar also arranges the installation Sealing, and the diaphragm chamber on the described nozzle body and liquid line are isolated.
4. what urea liquid atomization spray cap according to claim 2, described needle bar were provided with liquid road seal ring operability closes or opens feed liquor pipeline on the described nozzle body and the path between the liquid line.
5. urea liquid atomization spray cap according to claim 2, it is characterized in that: described needle bar one end is taper, becomes the effect of switch valve with described needle seated connection capitiform.
6. urea liquid atomization spray cap according to claim 1, described liquid line is arranged in the atomized air tube, and an end is communicated with the liquid line of described nozzle body, and the other end links to each other with described pintle valve seat joint.
7. urea liquid atomization spray cap according to claim 1, it is characterized in that: described jet-sub is provided with the jet-sub suction port, is communicated with described air atomizing pipe; Described jet-sub is communicated with described liquid line by described pintle valve seat joint; Also be provided with the jet-sub mixed export in the described jet-sub, Way out can be the vertical or certain angle of substantially horizontal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320069839 CN203223276U (en) | 2013-02-06 | 2013-02-06 | Atomization nozzle for urea solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320069839 CN203223276U (en) | 2013-02-06 | 2013-02-06 | Atomization nozzle for urea solution |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203223276U true CN203223276U (en) | 2013-10-02 |
Family
ID=49250281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320069839 Expired - Fee Related CN203223276U (en) | 2013-02-06 | 2013-02-06 | Atomization nozzle for urea solution |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203223276U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103639081A (en) * | 2013-10-28 | 2014-03-19 | 王云荣 | Flow-variable spray head |
| CN106637770A (en) * | 2017-02-22 | 2017-05-10 | 常州高凯精密机械有限公司 | Multi-color spray-dyeing equipment and control system thereof |
| CN107847884A (en) * | 2015-07-03 | 2018-03-27 | 杜尔***股份公司 | Coating agent valve |
-
2013
- 2013-02-06 CN CN 201320069839 patent/CN203223276U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103639081A (en) * | 2013-10-28 | 2014-03-19 | 王云荣 | Flow-variable spray head |
| CN103639081B (en) * | 2013-10-28 | 2017-01-25 | 重庆新陆农业开发有限公司 | Flow-variable spray head |
| CN106423602A (en) * | 2013-10-28 | 2017-02-22 | 合肥智慧殿投资管理有限公司 | Variable flow sprayer |
| CN107847884A (en) * | 2015-07-03 | 2018-03-27 | 杜尔***股份公司 | Coating agent valve |
| CN107847884B (en) * | 2015-07-03 | 2021-06-11 | 杜尔***股份公司 | Coating agent valve |
| CN106637770A (en) * | 2017-02-22 | 2017-05-10 | 常州高凯精密机械有限公司 | Multi-color spray-dyeing equipment and control system thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Chen Dai Document name: Notification to Pay the Fees |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131002 Termination date: 20170206 |