CN205663515U - Contains automobile exhaust after treatment system who discharges auxiliary cleaning system - Google Patents
Contains automobile exhaust after treatment system who discharges auxiliary cleaning system Download PDFInfo
- Publication number
- CN205663515U CN205663515U CN201620499755.5U CN201620499755U CN205663515U CN 205663515 U CN205663515 U CN 205663515U CN 201620499755 U CN201620499755 U CN 201620499755U CN 205663515 U CN205663515 U CN 205663515U
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- water pump
- valve
- air
- switch
- electromagnetic gas
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Abstract
The utility model provides a contains automobile exhaust after treatment system who discharges auxiliary cleaning system, belongs to the automobile manufacturing field. The utility model provides an among the present automobile exhaust after treatment system inside the measuring pump in evacuation stage, spray the problem that pipeline and nozzle easily stopped up. Discharging the auxiliary cleaning system and including battery, switch, electromagnetism pneumatic valve, solution jar, water pump and check valve, the electromagnetism pneumatic valve sets up between air filter and measuring pump, and the water pump passing through liquids pipeline that is connected with the solution jar is connected with the electromagnetism pneumatic valve, is provided with the check valve between water pump and the electromagnetism pneumatic valve, and electromagnetism pneumatic valve and water pump pass through on -off control action, the equal and electrical connections battery of electromagnetism pneumatic valve, water pump and switch. The utility model is used for the automobile exhaust aftertreatment.
Description
Technical field
This utility model relates to a kind of purging system, is specifically related to a kind of vehicle exhaust containing discharge auxiliary purging system
After-treatment system, belongs to automobile manufacturing field.
Background technology
In order to make the tail gas of Engine Exhaust Emission meet the automobile exhaust emission standard that State Environmental Protection Administration announces, with reality
Existing exhaust emissions of diesel engine reaches SCR technology (the i.e. SCR skill of the mainstream technology route of state IV and above regulation
Art) as a example by, SCR exhaust gas aftertreatment system is broadly divided into pre-note, metered injection, emptying three phases, and after vehicle stall, system is entered
Entering empty stage (empty stage system diagram is as shown in Figure 2), empty stage is system cut-off after lasting 30 seconds, each time electromotor fortune
Closing ignition switch system after Zhuaning and all can automatically perform evacuation procedure, compressed air passes through dosing pump flow nozzle, flow nozzle
Air will take away all carbamide remained in pipeline, the spray-hole of nozzle in order to reach expulsion pressure and angle degree of atomization and
It is meticulous to design, easily because of carbamide impurity deposition or vehicle down time is long causes dosing pump internal or injection line crystallization in using
And blocking, it is impossible to normally complete pre-note, metered injection, emptying three phases, now instrument report liquid back pipe blocking or dosing pump event
Barrier, because post processing occurs blocking class fault, discharge standard cannot be up to standard, engine power limit.Because of cannot be clear inside dosing pump
Wash, go wrong and just change dosing pump, increase the use cost of user, except SCR aftertreatment system is applied in the market
The dosing pump of most of exhaust gas aftertreatment system, injection line and nozzle all be use air pressure purge, therefore, be badly in need of want
A kind of assist cleaning dosing pump internal and injection line, nozzle system so that dosing pump can normally use, reach country row
Put environmental requirement.
Utility model content
This utility model be in order to solve in existing vehicle exhaust after-treatment system inside dosing pump, injection line and spray
The susceptible to plugging problem of mouth, and then provide a kind of vehicle exhaust after-treatment system containing discharge auxiliary purging system.
This utility model be the technical scheme is that by the above-mentioned technical problem of solution
A kind of vehicle exhaust after-treatment system containing discharge auxiliary purging system, including air-channel system, described gas circuit system
System includes air tank, air filtering core, dosing pump and nozzle, by the first pipeline connection between air tank and dosing pump, and air tank
And it is provided with air filtering core on the first pipeline between dosing pump, by the second pipeline connection between nozzle and dosing pump, a kind of
Vehicle exhaust after-treatment system containing discharge auxiliary purging system also includes discharge auxiliary purging system, and described discharge auxiliary is clear
The system of washing includes accumulator, switch, electromagnetic gas valve, NaOH solution tank NaOH, water pump and check valve, and electromagnetic gas valve is arranged on air filtering core and meter
On pipeline between amount pump, connect the water pump having NaOH solution tank NaOH and connected with electromagnetic gas valve by liquid line, water pump and electromagnetic gas valve
Between liquid line on be provided with check valve, electromagnetic gas valve and water pump by on-off control action, electromagnetic gas valve, water pump and open
Guan Jun is connected with storage battery.
Described discharge auxiliary purging system also includes pressure maintaining valve, pressure maintaining valve liquid between electromagnetic gas valve and check valve
On pipeline.
Described switch is reset switch.
This utility model compared with prior art has the effect that
In vehicle exhaust after-treatment system empty stage, on-off control water pump makes the solution in NaOH solution tank NaOH pass through liquid line
Entering air-channel system, solution and air pressure are mixed to form mixed gas in air-channel system and carry out emptying purge stages, dilution metering
Remaining carbamide or impurity in pump internal duct, injection line (the i.e. second pipeline) and nozzle effectively purge cleaning, with
Existing vehicle exhaust after-treatment system is compared, and the blocked state of dosing pump, injection line and nozzle is effectively improved,
In actual application, auxiliary can be carried out at any time in empty stage as required and clean, to ensure the smooth of empty stage
Carry out, improve the service life of dosing pump further.
Accompanying drawing explanation
Fig. 1 is the vehicle exhaust after-treatment system schematic diagram containing discharge auxiliary purging system of the present utility model；
Fig. 2 is existing vehicle exhaust after-treatment system schematic diagram (empty stage).
Detailed description of the invention
Detailed description of the invention one: combine Fig. 2 and present embodiment, a kind of car tail containing discharge auxiliary purging system are described
Gas after-treatment system, including air-channel system 9, described air-channel system 9 includes air tank 1, air filtering core 2, dosing pump 3 and nozzle 7,
Connected by the first pipeline 10 between air tank 1 with dosing pump 3, the first pipeline 10 between air tank 1 and dosing pump 3 is arranged
There is air filtering core 2, connected by the second pipeline 11 between nozzle 7 with dosing pump 3, a kind of vapour containing discharge auxiliary purging system
Tail gas after-treatment system also includes that discharge auxiliary purging system 8, described discharge auxiliary purging system 8 include accumulator 8-1, open
Close 8-2, electromagnetic gas valve 8-3, NaOH solution tank NaOH 8-4, water pump 8-5 and check valve 8-6, electromagnetic gas valve 8-3 and be arranged on air filtering core 2 and meter
On the first pipeline 10 between amount pump 3, connect the water pump 8-5 having NaOH solution tank NaOH 8-4 by liquid line 8-7 and electromagnetic gas valve 8-3
Connection, the liquid line 8-7 between water pump 8-5 and electromagnetic gas valve 8-3 is provided with check valve 8-6, electromagnetic gas valve 8-3 and water pump 8-
5 are all electrically connected with accumulator 8-1 by switch 8-2 control action, electromagnetic gas valve 8-3, water pump 8-5 and switch 8-2.
The time of vehicle exhaust after-treatment system empty stage is generally 30 seconds, and switch 8-2 opens, and controls electromagnetic gas valve 8-
3 cut off air tank 1 enters the air pressure in dosing pump 3, and water pump 8-5 action makes the solution in NaOH solution tank NaOH 8-4 enter air-channel system 9,
Residual gas pressure after air pressure being cut off because of the effect of check valve 8-6 cannot be introduced into assisting in purging system, makes the solution can be suitable
Profit enters air-channel system 9, and switch 8-2 closes solution and stops entering air-channel system 9, and the air pressure in air tank 1 passes through electromagnetic gas valve
8-3 is mixed to form mixed gas in air-channel system 9 with solution to be carried out dosing pump, injection line (the i.e. second pipeline) and nozzle
Clean.
Solution in NaOH solution tank NaOH can be that the anti-icing fluid of water or cleaning is to meet use in winter demand.
Air-channel system 9 also includes that post processing controls end 4, tank sensor 5, tank sensor 5 by CAN communication signal and Hou Chu
Reason controls end 4 and connects.
The vehicle exhaust after-treatment system containing discharge auxiliary purging system of the present invention can apply to any employing gas
Pressure mode carries out the after-treatment system purged, and is not limited only to SCR aftertreatment system.
In 30 seconds of empty stage, operator can the most freely control the time that auxiliary is cleaned.
Detailed description of the invention two: combine Fig. 2 and illustrate that present embodiment, described discharge auxiliary purging system 8 also include voltage stabilizing
On valve 8-8, the pressure maintaining valve 8-8 liquid line 8-7 between electromagnetic gas valve 8-3 and check valve 8-6.It is so designed that, prevents from cutting
Cause hydraulic pressure too high because of the supply of solution moment after disconnected air-channel system 9, it is to avoid each parts damages in causing dosing pump 3.Other composition
Identical with detailed description of the invention one with annexation.
Detailed description of the invention three: combine Fig. 2 and illustrate that present embodiment, described switch 8-2 are reset switch.It is so designed that,
Prevent from user in use because forgetting closing switch 8-2 causing the entrance gas circuit system that the solution in NaOH solution tank NaOH 8-4 is too much
System 9 and cause liquid residue too much, metered injection deviation when dosing pump 3 works again.Other composition and annexation are with concrete
Embodiment one or two is identical.
Operation principle:
After vehicle exhaust after-treatment system enters empty stage, press switch 8-2, electromagnetic gas valve 8-3 cut-out air tank 1 and enter
Entering the air pressure in dosing pump 3, water pump 8-5 action makes the solution in NaOH solution tank NaOH 8-4 enter air-channel system 9, because of the work of check valve 8-6
In residual gas pressure after cutting off with making air pressure cannot be introduced into assisting purging system, make solution can enter air-channel system 9 smoothly,
Trip switch 8-2, solution stops entering air-channel system 9, and the air pressure in air tank 1 passes through electromagnetic gas valve 8-3 in air-channel system 9
It is mixed to form mixed gas with solution dosing pump inside, injection line (the i.e. second pipeline) and nozzle are cleaned.
Claims (3)
1. the vehicle exhaust after-treatment system containing discharge auxiliary purging system, including air-channel system (9), described gas circuit system
System (9) includes air tank (1), air filtering core (2), dosing pump (3) and nozzle (7), logical between air tank (1) and dosing pump (3)
Cross the first pipeline (10) connection, the first pipeline (10) between air tank (1) and dosing pump (3) be provided with air filtering core (2),
Connected by the second pipeline (11) between nozzle (7) with dosing pump (3), it is characterised in that: a kind of auxiliary containing discharge cleans system
The vehicle exhaust after-treatment system of system also includes that discharge auxiliary purging system (8), described discharge auxiliary purging system (8) include storing
Battery (8-1), switch (8-2), electromagnetic gas valve (8-3), NaOH solution tank NaOH (8-4), water pump (8-5) and check valve (8-6), electromagnetic gas valve
(8-3) it is arranged on the pipeline between air filtering core (2) and dosing pump (3), connects and have the water pump (8-5) of NaOH solution tank NaOH (8-4) to lead to
Cross liquid line (8-7) to connect with electromagnetic gas valve (8-3), the liquid line (8-between water pump (8-5) and electromagnetic gas valve (8-3)
7) check valve (8-6), electromagnetic gas valve (8-3) and water pump (8-5) it are provided with on by switch (8-2) control action, electromagnetic gas valve
(8-3), water pump (8-5) and switch (8-2) all electrically connect with accumulator (8-1).
A kind of vehicle exhaust after-treatment system containing discharge auxiliary purging system the most according to claim 1, its feature
Be: described discharge auxiliary purging system (8) also include pressure maintaining valve (8-8), pressure maintaining valve (8-8) be positioned at electromagnetic gas valve (8-3) with
On liquid line (8-7) between check valve (8-6).
A kind of vehicle exhaust after-treatment system containing discharge auxiliary purging system the most according to claim 1 and 2, it is special
Levy and be: described switch (8-2) is reset switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620499755.5U CN205663515U (en) | 2016-05-27 | 2016-05-27 | Contains automobile exhaust after treatment system who discharges auxiliary cleaning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620499755.5U CN205663515U (en) | 2016-05-27 | 2016-05-27 | Contains automobile exhaust after treatment system who discharges auxiliary cleaning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205663515U true CN205663515U (en) | 2016-10-26 |
Family
ID=57161154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620499755.5U Expired - Fee Related CN205663515U (en) | 2016-05-27 | 2016-05-27 | Contains automobile exhaust after treatment system who discharges auxiliary cleaning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205663515U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108049974A (en) * | 2017-12-08 | 2018-05-18 | 武汉布朗环境能源有限公司 | A kind of cleaning repair system for diesel vehicle SCR/DPF after-treatment systems |
-
2016
- 2016-05-27 CN CN201620499755.5U patent/CN205663515U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108049974A (en) * | 2017-12-08 | 2018-05-18 | 武汉布朗环境能源有限公司 | A kind of cleaning repair system for diesel vehicle SCR/DPF after-treatment systems |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20161026 Termination date: 20200527 |