CN208089384U - A kind of automatic control type urea liquid spraying system - Google Patents
A kind of automatic control type urea liquid spraying system Download PDFInfo
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- CN208089384U CN208089384U CN201820408000.9U CN201820408000U CN208089384U CN 208089384 U CN208089384 U CN 208089384U CN 201820408000 U CN201820408000 U CN 201820408000U CN 208089384 U CN208089384 U CN 208089384U
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- injector
- air
- solenoid valve
- urea
- automatic control
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Abstract
The utility model is related to a kind of automatic control type urea liquid spraying systems.It is characterized by comprising air source, urea tank and using the injector of negative pressure drainage, injector is made of middle part runner and external shell, air flue is formed between middle part runner and external shell, runner exit is flushed with air passage outlet；The urea tank connects the runner of injector by liquid delivery tube, and air source connects the air flue of injector by air shooter, and negative pressure is formed in the jet port of injector.The utility model does not need specific SCR urea pumps to control emitted dose, only adjusts emitted dose with the duty ratio for adjusting proportion magnetic valve in injector, i.e., has the function of pump and nozzle simultaneously；Devising 2 kinds of different structures simultaneously realizes the mode of operation of two different liquid transmission pipeline emptying urea liquids, ensure when being stopped, there is no liquid residual in liquid transmission pipeline, the environment of pipeline when not worked by improving, it avoids that pipeline is caused to bear, extends pipeline service life.
Description
Technical field
The utility model is related to a kind of automatic control type urea liquid spraying systems.
Background technology
Although gas helps formula, urea metering pump plays a crucial role in SCR aftertreatment system, existing gas
Helping formula urea metering pump, there is also following drawbacks：Complicated, manufacturing cost is excessively high, and sealing structure requires high, the pump housing
It is detached with nozzle so that waste installation space, is unfavorable for integrating, it has not been convenient to which installation and repair, atomizing effect be not notable.Therefore,
Optimize structure, reduces manufacturing cost, is easy to installation and maintenance, promoting atomizing effect into the project for being badly in need of solution.
Utility model content
For problems of the prior art, the purpose of this utility model is to provide a kind of sprays of automatic control type urea liquid
Penetrate the technical solution of system.
A kind of automatic control type urea liquid spraying system, it is characterised in that including air source, urea tank and utilize negative pressure
The injector of drainage, injector are made of middle part runner and external shell, and air flue is formed between middle part runner and external shell, in
The runner exit of portion's runner is flushed with the air passage outlet of air flue；The urea tank connects the middle part of injector by liquid delivery tube
Runner, air source connect the air flue of injector by air shooter, and negative pressure is formed in the jet port of injector.
A kind of automatic control type urea liquid spraying system, it is characterised in that one is drawn on the liquid delivery tube
Pipe, branch pipe are communicated by a normally closed solenoid valve with air；It is arranged on air shooter between the air source and injector
Gas constant pressure solenoid valve；One proportion magnetic valve is set on the liquid delivery tube between the injector and urea tank.
A kind of automatic control type urea liquid spraying system, it is characterised in that the normally closed solenoid valve is closed type two
Two-way electromagnetic valve, the normal-closed end of closed type two-position two-way solenoid valve connect the branch pipe, closed type two-position two-way solenoid valve it is normal
Beginning communicates with air.
A kind of automatic control type urea liquid spraying system, it is characterised in that between the urea tank and injector
One normally open solenoid valve is set on liquid delivery tube；One air constant pressure is set on the air shooter between the air source and injector
Solenoid valve；One proportion magnetic valve is set on the liquid delivery tube between the injector and normally open solenoid valve.
A kind of automatic control type urea liquid spraying system, it is characterised in that the normally open solenoid valve is open type two
Three-way magnetic valve, the normally open end connection urea tank and liquid delivery tube of open type two-position three way magnetic valve, open type two-position three way
The normal-closed end of solenoid valve is communicated with air.
A kind of automatic control type urea liquid spraying system, it is characterised in that the air constant pressure solenoid valve is closed type
Bi-bit bi-pass structure.
A kind of automatic control type urea liquid spraying system, it is characterised in that the proportion magnetic valve is normally closed structure.
The utility model provides a kind of simple and reasonable injector and spraying system, need not be special in the prior art
Fixed SCR urea pumps control emitted dose, only adjust emitted dose with the duty ratio of proportion magnetic valve in adjusting injector, i.e., together
When have the function of pump and nozzle；Devising 2 kinds of different structures simultaneously realizes two different liquid transmission pipeline emptyings
The mode of operation of urea liquid, ensures when being stopped, and does not have liquid residual in liquid transmission pipeline, is not worked by improving
The environment of Shi Guanlu avoids causing to bear to pipeline, extends pipeline service life.
Description of the drawings
Fig. 1 is the first attachment structure schematic diagram；
Fig. 2 is the first evacuation structures schematic diagram；
Fig. 3 is second of attachment structure schematic diagram；
Fig. 4 is second of evacuation structures schematic diagram；
In figure：1- urea tanks, 2- normally closed solenoid valves, 3- proportion magnetic valves, 4- injectors, 5- air constant pressure solenoid valves, 6-
Air source, 7- runners, 8- air flues, 9- normally open solenoid valves.
Specific implementation mode
The utility model is described in further detail with reference to the accompanying drawings of the specification：
A kind of automatic control type urea liquid spraying system, air source 6, urea tank 1 and the injector 4 using negative pressure drainage, injection
Device is made of middle part runner 7 and external shell, and air flue 8 is formed between middle part runner and external shell, and the runner of middle part runner goes out
Mouth is flushed with the air passage outlet of air flue, and urea tank 1 connects the middle part runner of injector by liquid delivery tube, and air source passes through gas
Delivery pipe connects the air flue of injector, and negative pressure is formed in the jet port of injector.
Embodiment 1
A branch pipe is drawn on liquid delivery tube, branch pipe is communicated by a normally closed solenoid valve 2 with air；Air source 6 and injector 4
Between air shooter on an air constant pressure solenoid valve 5 is set；It is arranged on liquid delivery tube between injector and urea tank
One proportion magnetic valve 3.Normally closed solenoid valve is closed type two-position two-way solenoid valve, and the normal-closed end of closed type two-position two-way solenoid valve connects
The branch pipe is connect, the normally open end of closed type two-position two-way solenoid valve is communicated with air.Above-mentioned air constant pressure solenoid valve is closed type
Bi-bit bi-pass structure, proportion magnetic valve are normally closed structure.
The control method of the corresponding automatic control type urea liquid spraying system of the embodiment is as follows,
Spray regime：Air constant pressure solenoid valves are opened, and it is constant to make to enter compressed air flow velocity in injector, is spraying
The jet port of emitter forms negative pressure, while normally closed solenoid valve power-off is closed, and proportion magnetic valve is powered, make urea tank and injector it
Between form pressure difference, in the urea liquid indentation injector in urea tank, and mixed with compressed air in the jet port of injector
And atomized spray, urea liquid emitted dose are controlled by adjusting the duty ratio of proportion magnetic valve；
Emptying state：After the completion of injection, air constant pressure solenoid valve remains powered on, proportion magnetic valve standard-sized sheet, normally closed solenoid valve
It is powered and opens, the outlet of urea tank is communicated by normally closed solenoid valve with air, keeps the inlet and outlet pressure of urea tank the same, to handle
The urea liquid connected in the liquid transmission pipeline of normally closed solenoid valve and proportion magnetic valve empties, emptying time be set as 30 seconds-
60 seconds；Air constant pressure solenoid valve is first closed at the end of emptying, is delayed 1 second -2 seconds, then successively closes proportion magnetic valve, normally closed electricity
Magnet valve.
Embodiment 2
One normally open solenoid valve 9 is set on the liquid delivery tube between urea tank and injector；Between air source 6 and injector 4
Air shooter on an air constant pressure solenoid valve 5 is set；It is arranged on liquid delivery tube between injector and normally open solenoid valve
One proportion magnetic valve 3.Normally open solenoid valve is open type two-position three way magnetic valve, and the normally open end of open type two-position three way magnetic valve connects
Logical urea tank and liquid delivery tube, the normal-closed end of open type two-position three way magnetic valve are communicated with air.Above-mentioned air constant pressure electromagnetism
Valve is closed type bi-bit bi-pass structure, and proportion magnetic valve is normally closed structure.
The control method of the corresponding automatic control type urea liquid spraying system of the embodiment is as follows,
Spray regime：Air constant pressure solenoid valves are opened, and it is constant to make to enter compressed air flow velocity in injector, is spraying
The jet port of emitter forms negative pressure, while normally open solenoid valve power-off maintains a normally open, and proportion magnetic valve is powered, and makes urea tank and injection
Pressure difference is formed between device, the urea liquid in urea tank is pressed into injector, and in the jet port and compressed air of injector
It mixes and atomized spray, urea liquid emitted dose is controlled by adjusting the duty ratio of proportion magnetic valve；
Emptying state：After the completion of injection, air constant pressure solenoid valve remains powered on, proportion magnetic valve standard-sized sheet, normally open solenoid valve
It is powered, the port closing of such urea tank, the liquid transmission pipeline for connecting normally closed solenoid valve and proportion magnetic valve passes through normally opened electricity
Magnet valve is communicated with air, to which the urea liquid in the liquid transmission pipeline of connection normally open solenoid valve and proportion magnetic valve is arranged
Sky, emptying time are set as 30 seconds -60 seconds, and air constant pressure solenoid valve is first closed at the end of emptying, are delayed 1 second -2 seconds, then first
Proportion magnetic valve, normally open solenoid valve are closed afterwards.
Claims (7)
1. a kind of automatic control type urea liquid spraying system, it is characterised in that including air source, urea tank and utilize the spray of negative pressure drainage
Emitter, injector are made of middle part runner and external shell, and air flue is formed between middle part runner and external shell, middle part runner
Runner exit is flushed with the air passage outlet of air flue；The urea tank connects the middle part runner of injector, gas by liquid delivery tube
Source connects the air flue of injector by air shooter, and negative pressure is formed in the jet port of injector.
2. a kind of automatic control type urea liquid spraying system according to claim 1, it is characterised in that conveyed in the liquid
A branch pipe is drawn on pipe, branch pipe is communicated by a normally closed solenoid valve with air；Gas conveying between the air source and injector
One air constant pressure solenoid valve is set on pipe；One ratio electromagnetism is set on the liquid delivery tube between the injector and urea tank
Valve.
3. a kind of automatic control type urea liquid spraying system according to claim 2, it is characterised in that the normally closed solenoid valve
Normal-closed end for closed type two-position two-way solenoid valve, closed type two-position two-way solenoid valve connects the branch pipe, closed type two two
The normally open end of three-way electromagnetic valve is communicated with air.
4. a kind of automatic control type urea liquid spraying system according to claim 1, it is characterised in that the urea tank with
One normally open solenoid valve is set on the liquid delivery tube between injector；It is set on air shooter between the air source and injector
Set an air constant pressure solenoid valve；One proportion magnetic valve is set on the liquid delivery tube between the injector and normally open solenoid valve.
5. a kind of automatic control type urea liquid spraying system according to claim 4, it is characterised in that the normally open solenoid valve
Normally open end for open type two-position three way magnetic valve, open type two-position three way magnetic valve is connected to urea tank and liquid delivery tube, often
The normal-closed end of open form two-position three way magnetic valve is communicated with air.
6. a kind of automatic control type urea liquid spraying system according to claim 2 or 4, it is characterised in that the air constant pressure
Solenoid valve is closed type bi-bit bi-pass structure.
7. a kind of automatic control type urea liquid spraying system according to claim 2 or 4, it is characterised in that the ratio electromagnetism
Valve is normally closed structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820408000.9U CN208089384U (en) | 2018-03-26 | 2018-03-26 | A kind of automatic control type urea liquid spraying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820408000.9U CN208089384U (en) | 2018-03-26 | 2018-03-26 | A kind of automatic control type urea liquid spraying system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208089384U true CN208089384U (en) | 2018-11-13 |
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ID=64060427
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820408000.9U Active CN208089384U (en) | 2018-03-26 | 2018-03-26 | A kind of automatic control type urea liquid spraying system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108266252A (en) * | 2018-03-26 | 2018-07-10 | 浙江爱力浦科技股份有限公司 | A kind of air cooling air-assisted automatic control type urea liquid spraying system |
| CN108361095A (en) * | 2018-03-26 | 2018-08-03 | 浙江爱力浦科技股份有限公司 | A kind of automatic control type urea liquid spraying system |
-
2018
- 2018-03-26 CN CN201820408000.9U patent/CN208089384U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108266252A (en) * | 2018-03-26 | 2018-07-10 | 浙江爱力浦科技股份有限公司 | A kind of air cooling air-assisted automatic control type urea liquid spraying system |
| CN108361095A (en) * | 2018-03-26 | 2018-08-03 | 浙江爱力浦科技股份有限公司 | A kind of automatic control type urea liquid spraying system |
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