CN208089386U - A kind of water cooling air-assisted automatic control type urea liquid spraying system - Google Patents
A kind of water cooling air-assisted automatic control type urea liquid spraying system Download PDFInfo
- Publication number
- CN208089386U CN208089386U CN201820408169.4U CN201820408169U CN208089386U CN 208089386 U CN208089386 U CN 208089386U CN 201820408169 U CN201820408169 U CN 201820408169U CN 208089386 U CN208089386 U CN 208089386U
- Authority
- CN
- China
- Prior art keywords
- air
- injector
- liquid
- solenoid valve
- urea
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Nozzles (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The utility model is related to a kind of water cooling air-assisted automatic control type urea liquid spraying systems.It is characterized by comprising air source, urea tank and injectors, injector includes shell, inner flow passage, lower chamber, lumen tube and liquid inlet joint, and inner flow passage is arranged inside the shell, and inner flow passage constitutes air cavity with shell, snorkel is set on shell, and snorkel is connected to air cavity；Urea tank connects the liquid inlet joint of injector by liquid delivery tube, and air source connects the snorkel of injector by air shooter.The utility model realizes the mode of operation of two kinds of liquid transmission pipeline emptying urea liquids, ensures when being stopped do not have liquid residual in liquid transmission pipeline；In addition after air source snorkel enters air cavity, liquid by electromagnetic proportional valve, lumen tube and inner core can be cooled down, simultaneously by the cooperation of high-order outlet pipe and low position inflow water pipe, cooling water is sent into cooling chamber, to being cooled down by the liquid of injector.
Description
Technical field
The utility model is related to a kind of water cooling air-assisted 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 water cooling air-assisteds certainly
The technical solution of control type urea liquid spraying system.
A kind of water cooling air-assisted automatic control type urea liquid spraying system, it is characterised in that including air source, urine
Plain tank and the injector for utilizing negative pressure drainage；The injector includes that shell, inner flow passage, lower chamber, lumen tube and feed liquor connect
Head, inner flow passage are arranged inside the shell, and inner flow passage constitutes air cavity with shell, and snorkel, snorkel and air cavity is arranged on shell
Connection, the runner exit of inner flow passage are flushed with the air passage outlet of air cavity, and negative pressure, cavity of resorption can be formed in the jet port of injector
Body is connected by mounting flange with shell, and lumen tube is arranged in lower chamber, and lumen tube is connected to inner flow passage, lumen tube and cavity of resorption
Body constitutes cooling chamber, setting low position inflow water pipe and high-order outlet pipe, low position inflow water pipe and high position outlet pipe and cooling on lower chamber
Chamber is connected to, and low position inflow water pipe and high-order outlet pipe have a difference in height, and liquid inlet joint is arranged above lumen tube；The urea tank is logical
The liquid inlet joint of liquid delivery tube connection injector is crossed, air source connects the snorkel of injector by air shooter.
A kind of water cooling air-assisted automatic control type urea liquid spraying system, it is characterised in that defeated in the liquid
It send and draws a branch pipe on pipe, branch pipe is communicated by a normally closed solenoid valve with air；Gas between the air source and injector is defeated
It send and an 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.
A kind of water cooling air-assisted automatic control type urea liquid spraying system, it is characterised in that the normally closed electromagnetism
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, closed type two
The normally open end of two-way electromagnetic valve is communicated with air.
A kind of water cooling air-assisted automatic control type urea liquid spraying system, it is characterised in that in the urea tank
One normally open solenoid valve is set on the liquid delivery tube between injector；On air shooter between the air source and injector
One air constant pressure solenoid valve is set；One ratio electromagnetism is set on the liquid delivery tube between the injector and normally open solenoid valve
Valve.
A kind of water cooling air-assisted automatic control type urea liquid spraying system, it is characterised in that the normally opened electromagnetism
Valve is open type two-position three way magnetic valve, and the normally open end of open type two-position three way magnetic valve is connected to urea tank and liquid delivery tube,
The normal-closed end of open type two-position three way magnetic valve is communicated with air.
A kind of water cooling air-assisted 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, and the proportion magnetic valve is normally closed structure.
A kind of water cooling air-assisted automatic control type urea liquid spraying system, it is characterised in that the inner flow passage
It is made of inner core and connecting tube, connecting tube is arranged above inner core, and connecting tube is connected to lumen tube；The mounting flange, shell,
Inner core and connecting tube constitute air cavity, and snorkel is arranged on mounting flange circumference and is connected to air cavity.
A kind of water cooling air-assisted automatic control type urea liquid spraying system, it is characterised in that the ratio electromagnetism
Valve is arranged in lumen tube, and proportion magnetic valve is fixedly linked with liquid inlet joint by the c-type seat being arranged in lumen tube.
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；In addition after air source snorkel enters air cavity, energy
The enough liquid to by electromagnetic proportional valve, lumen tube and inner core cools down, at the same by high-order outlet pipe and low level into
Cooling water is sent into cooling chamber by the cooperation of water pipe, to being cooled down by the liquid of injector.
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；
Fig. 5 is the structural schematic diagram one of injector；
Fig. 6 is the structural schematic diagram two of injector；
Fig. 7 is the structural schematic diagram three of injector；
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- normally open solenoid valves, 8- snorkels；9- shells；10- inner cores；11- connecting tubes；12- inner flow passages；13- air cavitys；14- is solid
Determine flange；15- lower chambers；16- lumen tubes；17- cooling chambers；18- liquid inlet joints；19-C type seats；20- high position outlet pipes；21- is low
Position outlet pipe.
Specific implementation mode
The utility model is described in further detail with reference to the accompanying drawings of the specification：
A kind of water cooling air-assisted automatic control type urea liquid spraying system, air source 6, urea tank 1 and utilize negative pressure drainage
Injector 4, injector includes shell 9, inner flow passage 12, lower chamber 15, lumen tube 16 and liquid inlet joint 18, and inner flow passage is set
It sets in shell 9, inner flow passage 12 constitutes air cavity 13 with shell, and snorkel 8 is arranged on shell, and snorkel 8 is connected to air cavity 13,
The runner exit of inner flow passage 12 is flushed with the air passage outlet of air cavity, and negative pressure, lower chamber can be formed in the jet port of injector
It is connected with shell by mounting flange 14, lumen tube 16 is set in lower chamber, lumen tube 16 is connected to inner flow passage, lumen tube 16
Constitute cooling chamber 17 with lower chamber 15,15 setting low position inflow water pipes 21 and high-order outlet pipe 20 on lower chamber, low position inflow water pipe and
High-order outlet pipe is connected to cooling chamber 17, and low position inflow water pipe and high-order outlet pipe have a difference in height, by low position inflow water pipe into
Enter cooling water to cool down the urea liquid that injector flows through, then be flowed out from high-order outlet pipe, cooling water source comes from hair
Liquid inlet joint 18 is arranged in motivation cooling water, lumen tube top；The feed liquor that urea tank 1 connects injector by liquid delivery tube connects
Head, air source connect the snorkel of injector by air shooter, 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 water cooling air-assisted 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 7 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 water cooling air-assisted 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.
For the ease of processing, inner flow passage is made of inner core 10 and connecting tube 11, and connecting tube is arranged above inner core, connection
Pipe is connected to lumen tube, and mounting flange, shell, inner core and connecting tube constitute air cavity at this time, and snorkel setting is justified in mounting flange
It is connected on week and with air cavity, the setting angle of snorkel and mounting flange can be adjusted, can be depending on operating mode.
In order to control injector injection flow, a proportion magnetic valve is set in lumen tube, by adjusting proportion magnetic valve
PWM duty cycle adjusts flow, and proportion magnetic valve is fixedly linked with liquid inlet joint by the c-type seat 19 being arranged in lumen tube.
Connecting tube is installed on inner core, snorkel is installed, and inner core and connecting tube are filled on the shell together on mounting flange,
Then they are mounted on mounting flange together, shell, mounting flange, inner core, connecting tube form air cavity, are connected to air inlet pipe；
Lower chamber is mounted on mounting flange, proportion of installation solenoid valve and c-type seat in lumen tube, liquid inlet joint is pressed on ratio electricity
On magnet valve, then liquid inlet joint is fixed on c-type seat with screw.It is liquid inlet joint, proportion magnetic valve, lumen tube, connecting tube, interior
Core forms the channel of urea liquid.In use, the injector is mounted in the mounting base of Diesel Engine Exhaust Pipe.
Air source passes through air constant pressure solenoid valve 5, enters air cavity from the snorkel of injector, finally reaches jet port.Air
The effect of constant pressure solenoid valve 5 makes device obtain the gas of constant pressure.On the one hand the effect of air source makes jet port form negative pressure, rise
To the effect of imbibition.On the other hand, the gas of jet port can make atomizing effect more preferably.Finally, air source can also play cooling
Effect.
In order to keep atomizing effect excellent, in the radial clearance uniformity of outlet end, shell and inner core are going out for shell and inner core
It mouth end axially should be concordant.
The utility model is according to Bernoulli equation principle, and the speed of air-flow is bigger, and pressure is smaller.After energization, ventilating
Under the conditions of, the outlet of injector forms negative pressure, and atmospheric pressure extrudes urea liquid from urea tank, by way of liquid inlet joint, ratio
Solenoid valve, connecting tube and inner core, are finally ejected, while reaching preferable atomizing effect.
In traditional SCR urea systems, urea liquid is provided by urea pump drive, production in urea pump in the process
Raw higher pressure, therefore to the high standard of sealing property of pipeline, the failure rate of sealing element is also high.The utility model is made due to gas
Channel interior generates negative pressure and forms pressure difference, thus relatively low to pipeline sealing requirements.
The structure of the utility model is equivalent to urea pump is integrated with nozzle, has both had the function of pump, also includes nozzle
Function, it is effectively that urea pump and nozzle is integrated.Structure is not only optimized in this way, can also significantly reduce manufacture
Cost, assembly cost and maintenance cost.
Claims (8)
1. a kind of water cooling air-assisted automatic control type urea liquid spraying system, it is characterised in that including air source, urea tank and profit
With the injector of negative pressure drainage；The injector includes shell, inner flow passage, lower chamber, lumen tube and liquid inlet joint, inside stream
Road is arranged inside the shell, and inner flow passage constitutes air cavity with shell, and snorkel is arranged on shell, and snorkel is connected to air cavity, internal
The runner exit of runner is flushed with the air passage outlet of air cavity, can form negative pressure in the jet port of injector, lower chamber passes through solid
Determine flange with shell to be connected, lumen tube is set in lower chamber, lumen tube is connected to inner flow passage, and lumen tube constitutes cold with lower chamber
But chamber, setting low position inflow water pipe and high-order outlet pipe on lower chamber, low position inflow water pipe and high position outlet pipe are connected to cooling chamber, low
Position water inlet pipe and high-order outlet pipe have a difference in height, and liquid inlet joint is arranged above lumen tube；The urea tank is defeated by liquid
The liquid inlet joint of pipe connection injector, air source is sent to connect the snorkel of injector by air shooter.
2. a kind of water cooling air-assisted automatic control type urea liquid spraying system according to claim 1, it is characterised in that
A branch pipe is drawn on the liquid delivery tube, branch pipe is communicated by a normally closed solenoid valve with air；The air source and injector
Between air shooter on an air constant pressure solenoid valve is set；It is set on liquid delivery tube between the injector and urea tank
Set a proportion magnetic valve.
3. a kind of water cooling air-assisted automatic control type urea liquid spraying system according to claim 2, it is characterised in that
The 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, the normally open end of closed type two-position two-way solenoid valve is communicated with air.
4. a kind of water cooling air-assisted automatic control type urea liquid spraying system according to claim 1, it is characterised in that
One normally open solenoid valve is set on the liquid delivery tube between the urea tank and injector；Between the air source and injector
One air constant pressure solenoid valve is set on air shooter；It is arranged on liquid delivery tube between the injector and normally open solenoid valve
One proportion magnetic valve.
5. a kind of water cooling air-assisted automatic control type urea liquid spraying system according to claim 4, it is characterised in that
The normally open solenoid valve be open type two-position three way magnetic valve, open type two-position three way magnetic valve normally open end connection urea tank with
The normal-closed end of liquid delivery tube, open type two-position three way magnetic valve is communicated with air.
6. a kind of water cooling air-assisted automatic control type urea liquid spraying system according to claim 2 or 4, feature exist
It is closed type bi-bit bi-pass structure in the air constant pressure solenoid valve, the proportion magnetic valve is normally closed structure.
7. a kind of water cooling air-assisted automatic control type urea liquid spraying system according to claim 1, it is characterised in that
The inner flow passage is made of inner core and connecting tube, and connecting tube is arranged above inner core, and connecting tube is connected to lumen tube；It is described solid
Determine flange, shell, inner core and connecting tube and constitute air cavity, snorkel is arranged on mounting flange circumference and is connected to air cavity.
8. a kind of water cooling air-assisted automatic control type urea liquid spraying system according to claim 1 or 2 or 4, special
Sign is that the proportion magnetic valve is arranged in lumen tube, and proportion magnetic valve and liquid inlet joint pass through the C that is arranged in lumen tube
Type seat is fixedly linked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820408169.4U CN208089386U (en) | 2018-03-26 | 2018-03-26 | A kind of water cooling air-assisted automatic control type urea liquid spraying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820408169.4U CN208089386U (en) | 2018-03-26 | 2018-03-26 | A kind of water cooling air-assisted automatic control type urea liquid spraying system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208089386U true CN208089386U (en) | 2018-11-13 |
Family
ID=64060369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820408169.4U Active CN208089386U (en) | 2018-03-26 | 2018-03-26 | A kind of water cooling air-assisted automatic control type urea liquid spraying system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208089386U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108425725A (en) * | 2018-03-26 | 2018-08-21 | 浙江爱力浦科技股份有限公司 | A kind of water cooling air-assisted automatic control type urea liquid spraying system |
-
2018
- 2018-03-26 CN CN201820408169.4U patent/CN208089386U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108425725A (en) * | 2018-03-26 | 2018-08-21 | 浙江爱力浦科技股份有限公司 | A kind of water cooling air-assisted automatic control type urea liquid spraying system |
| CN108425725B (en) * | 2018-03-26 | 2023-12-05 | 浙江爱力浦科技股份有限公司 | Water-cooled air auxiliary type automatic control urea solution injection system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102388208B (en) | System and process for storing an additive and injecting it into the exhaust gases of an engine | |
| CN102588052B (en) | A kind of SCR ejecting system | |
| CN109630479A (en) | A kind of nozzle, the adjustable injector of the discharge characteristic based on the nozzle and its application | |
| CN108457781A (en) | A kind of large diesel engine fuel system | |
| CN102182586A (en) | ERG (exhaust gas recirculation) mixer | |
| CN102042073A (en) | Engine cooling water system device with automatic exhaust function | |
| CN208089386U (en) | A kind of water cooling air-assisted automatic control type urea liquid spraying system | |
| CN108266252A (en) | A kind of air cooling air-assisted automatic control type urea liquid spraying system | |
| CN205559025U (en) | A differential urea pump for SCR exhaust aftertreatment | |
| CN208089387U (en) | A kind of air cooling air-assisted automatic control type urea liquid spraying system | |
| CN108425725A (en) | A kind of water cooling air-assisted automatic control type urea liquid spraying system | |
| CN208089384U (en) | A kind of automatic control type urea liquid spraying system | |
| CN106285854B (en) | A kind of SCR liquid injection apparatus | |
| CN105626205A (en) | Differential pressure type urea pump for SCR exhaust gas after-treatment | |
| CN107559079A (en) | Diesel engine post-processing system | |
| CN210858878U (en) | Gas-assisted urea injection metering device for SCR system | |
| CN207999304U (en) | A kind of novel water cooling air-assisted automatic control type urea liquid injector | |
| US10634126B2 (en) | Constant-volume metering pump | |
| CN207960814U (en) | A kind of large diesel engine fuel system | |
| CN208089385U (en) | A kind of novel air cooling air-assisted automatic control type urea liquid injector | |
| CN202148941U (en) | Anti-blocking device of air throttling orifices in selective catalytic reduction (SCR) ejecting system | |
| CN106468201A (en) | A kind of hot environment liquid injection apparatus | |
| CN110792489B (en) | Urea solution supply system adopting pneumatic double-diaphragm pump | |
| CN205559027U (en) | Measurement unit air way anti -clogging device of SCR system | |
| CN107725823A (en) | A kind of water bypass of engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |