CN204344211U - A kind of urea nozzle with self-cooling function - Google Patents
A kind of urea nozzle with self-cooling function Download PDFInfo
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- CN204344211U CN204344211U CN201420797232.XU CN201420797232U CN204344211U CN 204344211 U CN204344211 U CN 204344211U CN 201420797232 U CN201420797232 U CN 201420797232U CN 204344211 U CN204344211 U CN 204344211U
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- nozzle
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- annular housing
- urea
- spool
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Abstract
The utility model relates to a kind of urea nozzle with self-cooling function, it comprises nozzle body, is arranged on the shower nozzle of nozzle body one end, the other end of nozzle body is provided with electromagnetic valve body, the first annular housing being communicated with spray chamber and feed pathway is offered in the end that described nozzle body is connected with shower nozzle, the second annular housing is offered at the middle part of nozzle body, offer connecting passage between second annular housing and the first annular housing, spool sidewall offers the liquid entering hole of connection second annular housing and valve core inside.The utility model adopts said structure, no matter urea nozzle is being sprayed in using process or is being stopped in a period of time after spraying, the runner of urea liquid through the nozzle body inside arranged all is had to circulate, take away the heat of nozzle body and shower nozzle, play cooling effect, make urea nozzle maintain lower operating temperature all the time, avoid occurring crystallization or generating polymer and block spray-hole, the working life of urea nozzle can be extended simultaneously.
Description
Technical field:
The utility model relates to tail gas processing system of diesel engine (SCR system) equipment technical field, refers in particular to a kind of urea nozzle with self-cooling function.
Background technique:
Urea nozzle in existing tail gas processing system of diesel engine (SCR system) is easy crystallization or generation polymer plugging spray orifice when high temperature small flow, and it is bad owing to cooling that shower nozzle part is placed in tail gas hot environment for a long time, affects working life.
Model utility content:
The purpose of this utility model is the above-mentioned deficiency of existing product, provides a kind of urea nozzle with self-cooling function.
The technical solution adopted in the utility model is: a kind of urea nozzle with self-cooling function, it comprises nozzle body, is arranged on the shower nozzle of nozzle body one end, wherein: between nozzle body and shower nozzle, be formed with spray chamber, nozzle body offers the feed pathway be communicated with this spray chamber; The other end in nozzle body is provided with electromagnetic valve body, through valve core channel is offered in nozzle body center, the spool of described electromagnetic valve body is arranged in this valve core channel, described spool is the hollow tubular of one end sealing, the other end opening, and wherein the sealed end of spool is positioned at described spray chamber and has the point that can block shower nozzle spray-hole; The opening end of spool is communicated with the liquid return pipe be arranged in electromagnetic valve body; Offer the first annular housing being communicated with described spray chamber and feed pathway in the end that described nozzle body is connected with shower nozzle, offer the second annular housing at the middle part of nozzle body, between the second annular housing and the first annular housing, offer connecting passage; And the second annular housing connects with described spool outer wall, spool sidewall offers the liquid entering hole of connection second annular housing and valve core inside.
Also be provided with shell in the outside of the electromagnetic valve body of described nozzle body, shell is provided with the drain pipe be connected with liquid return pipe, shell is also provided with the supply hub be connected with electromagnetic valve body.
The sidepiece of described nozzle body is provided with the liquid inlet pipe be communicated with feed pathway.
Described first annular housing is communicated with by the liquid bath on shower nozzle interior edge face with spray chamber, and the direction of described liquid bath is arranged along non-static fields.
The utility model adopts said structure, no matter urea nozzle is being sprayed in using process or is being stopped in a period of time after spraying, the runner of urea liquid through the nozzle body inside arranged all is had to circulate, take away the heat of nozzle body and shower nozzle, play cooling effect, make urea nozzle maintain lower operating temperature all the time, avoid occurring crystallization or generating polymer and block spray-hole, the working life of urea nozzle can be extended simultaneously.
Accompanying drawing illustrates:
Fig. 1 is the sectional view of the utility model "on" position;
Fig. 2 is the sectional view of the utility model off-position.
Embodiment:
Below in conjunction with specific embodiments and the drawings, the utility model is further illustrated.
As shown in Fig. 1 ~ Fig. 2, a kind of urea nozzle with self-cooling function described in the utility model, it comprises nozzle body 1, is arranged on the shower nozzle 2 of nozzle body 1 one end, wherein: between nozzle body 1 and shower nozzle 2, be formed with spray chamber 201, nozzle body 1 offers the feed pathway 101 be communicated with this spray chamber 201; The other end in nozzle body 1 is provided with electromagnetic valve body 3, through valve core channel 102 is offered in nozzle body 1 center, the spool 31 of described electromagnetic valve body 3 is arranged in this valve core channel 102, the hollow tubular of described spool 31 sealing, the other end opening in one end, wherein the sealed end of spool 31 is positioned at described spray chamber 201 and has the point 311 that can block shower nozzle 2 spray-hole 202; The opening end of spool 31 is communicated with the liquid return pipe 4 be arranged in electromagnetic valve body 3; The first annular housing 103 being communicated with described spray chamber 201 and feed pathway 101 is offered in the end that described nozzle body 1 is connected with shower nozzle 2, offer at the middle part of nozzle body 1 between second annular housing 104, second annular housing 104 and the first annular housing 103 and offer connecting passage 105; And the second annular housing 104 connects with described spool 31 outer wall, spool 31 sidewall offers the liquid entering hole 312 of connection second annular housing 104 and spool 31 inside.
The utility model carrys out the spraying operation of Control Nozzle 2 by valve core of the electromagnetic valve 31, as shown in Figure 1, when electromagnetic valve body 3 is energized, spool 31 is positioned at back-end location under the effect of electromagnetic force, the point 311 of its sealed end departs from the spray-hole 202 of shower nozzle 2, spray-hole 202 can not be blocked, therefore, urea liquid enters the first annular housing 103 from liquid inlet pipe through feed pathway 101, a part enters in spray chamber 201, ejected by spray-hole 202, and another part urea liquid is through the first annular housing 103, connecting passage 105 enters the second annular housing 104, liquid entering hole 312 again on spool 31 enters in spool 31, liquid return pipe 4 is entered from the opening end of spool 31, backflow is gone out, the i.e. passage backflow of some urea liquid in nozzle body 1 while spraying, the heat of nozzle body 1 can be taken away, nozzle body 1 is made to remain at lower operating temperature, increase the service life.
As shown in Figure 2, and when electromagnetic valve body 3 power-off, spool 31 will move to sealed end direction, the spray-hole 202 of shower nozzle 2 is blocked by the point 311 of spool 31 sealed end, stop spraying, but the supply of urea liquid still continues, from feed pathway 101 successively through the first annular housing 103, connecting passage 105, second annular housing 104, spool 31 liquid entering hole 312, spool 31 is inner, finally refluxed by liquid return pipe 4, namely urea liquid is still kept to circulate from the passage in nozzle body 1 when stopping injection, take away the heat at nozzle body 1 and shower nozzle 2 place in time, they are cooled, avoid occurring crystalline polamer in shower nozzle 2 place or nozzle body 1, the urea nozzle moment can normally be used, and increase the service life further.
Further, be also provided with shell 5 in the outside of the electromagnetic valve body 3 of described nozzle body 1, shell 5 is provided with the drain pipe 51 be connected with liquid return pipe 4, shell 5 is also provided with the supply hub 52 be connected with electromagnetic valve body 3, plays a protective role to electromagnetic valve body 3; The sidepiece of described nozzle body 1 is provided with the liquid inlet pipe 6 be communicated with feed pathway 101, is conveniently connected with urea supply device.
Described first annular housing 103 is communicated with by the liquid bath 203 on shower nozzle 2 interior edge face with spray chamber 201, and the direction of described liquid bath 203 is arranged along non-static fields, make urea liquid form clockwise or counterclockwise eddy flow shape after the first annular housing 103 enters spray chamber 201 by liquid bath 203, thus strengthen jeting effect.
In sum, the utility model adopts said structure, no matter urea nozzle is being sprayed in using process or is being stopped in a period of time after spraying, the runner of urea liquid through the nozzle body inside arranged all is had to circulate, take away the heat of nozzle body and shower nozzle, play cooling effect, make urea nozzle maintain lower operating temperature all the time, avoid occurring crystallization or generating polymer and block spray-hole, the working life of urea nozzle can be extended simultaneously.
Claims (4)
1. the urea nozzle with self-cooling function, it comprises nozzle body, is arranged on the shower nozzle of nozzle body one end, it is characterized in that: between nozzle body and shower nozzle, be formed with spray chamber, nozzle body offers the feed pathway be communicated with this spray chamber; The other end in nozzle body is provided with electromagnetic valve body, through valve core channel is offered in nozzle body center, the spool of described electromagnetic valve body is arranged in this valve core channel, described spool is the hollow tubular of one end sealing, the other end opening, and wherein the sealed end of spool is positioned at described spray chamber and has the point that can block shower nozzle spray-hole; The opening end of spool is communicated with the liquid return pipe be arranged in electromagnetic valve body; Offer the first annular housing being communicated with described spray chamber and feed pathway in the end that described nozzle body is connected with shower nozzle, offer the second annular housing at the middle part of nozzle body, between the second annular housing and the first annular housing, offer connecting passage; And the second annular housing connects with described spool outer wall, spool sidewall offers the liquid entering hole of connection second annular housing and valve core inside.
2. the urea nozzle of band self-cooling function according to claim 1, it is characterized in that: be also provided with shell in the outside of the electromagnetic valve body of described nozzle body, shell is provided with the drain pipe be connected with liquid return pipe, shell is also provided with the supply hub be connected with electromagnetic valve body.
3. the urea nozzle of band self-cooling function according to claim 1, is characterized in that: the sidepiece of described nozzle body is provided with the liquid inlet pipe be communicated with feed pathway.
4. the urea nozzle of band self-cooling function according to claim 1, is characterized in that: described first annular housing is communicated with by the liquid bath on shower nozzle interior edge face with spray chamber, and the direction of described liquid bath is arranged along non-static fields.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420797232.XU CN204344211U (en) | 2014-12-15 | 2014-12-15 | A kind of urea nozzle with self-cooling function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420797232.XU CN204344211U (en) | 2014-12-15 | 2014-12-15 | A kind of urea nozzle with self-cooling function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204344211U true CN204344211U (en) | 2015-05-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420797232.XU Active CN204344211U (en) | 2014-12-15 | 2014-12-15 | A kind of urea nozzle with self-cooling function |
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| Country | Link |
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| CN (1) | CN204344211U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105240096A (en) * | 2015-11-24 | 2016-01-13 | 天津星洁汽车排放控制系统有限公司 | Aqueous urea solution spray nozzle cooling structure of SCR (selective catalytic reduction) system |
| CN105257378A (en) * | 2015-11-18 | 2016-01-20 | 天纳克（苏州）排放系统有限公司 | Spray nozzle assembly |
| CN115246662A (en) * | 2021-04-27 | 2022-10-28 | 邢台旭阳煤化工有限公司 | Treatment device and treatment method for benzene hydrogenation wastewater |
-
2014
- 2014-12-15 CN CN201420797232.XU patent/CN204344211U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257378A (en) * | 2015-11-18 | 2016-01-20 | 天纳克（苏州）排放系统有限公司 | Spray nozzle assembly |
| CN105257378B (en) * | 2015-11-18 | 2017-09-15 | 天纳克（苏州）排放系统有限公司 | Nozzle assembly |
| CN105240096A (en) * | 2015-11-24 | 2016-01-13 | 天津星洁汽车排放控制系统有限公司 | Aqueous urea solution spray nozzle cooling structure of SCR (selective catalytic reduction) system |
| CN105240096B (en) * | 2015-11-24 | 2018-04-13 | 天津星洁汽车排放控制系统有限公司 | A kind of aqueous urea solution spray nozzle cooling structure in SCR system |
| CN115246662A (en) * | 2021-04-27 | 2022-10-28 | 邢台旭阳煤化工有限公司 | Treatment device and treatment method for benzene hydrogenation wastewater |
| CN115246662B (en) * | 2021-04-27 | 2024-05-28 | 邢台旭阳煤化工有限公司 | Benzene hydrogenation wastewater treatment device and treatment method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |