CN203822423U - Urea solution tank for SCR aftertreatment system - Google Patents
Urea solution tank for SCR aftertreatment system Download PDFInfo
- Publication number
- CN203822423U CN203822423U CN201320851039.5U CN201320851039U CN203822423U CN 203822423 U CN203822423 U CN 203822423U CN 201320851039 U CN201320851039 U CN 201320851039U CN 203822423 U CN203822423 U CN 203822423U
- Authority
- CN
- China
- Prior art keywords
- bolt
- scr
- liquid
- tank
- treatment system
- 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.)
- Expired - Lifetime
Links
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 239000004202 carbamide Substances 0.000 title claims abstract description 45
- 239000007788 liquid Substances 0.000 claims abstract description 53
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 238000010079 rubber tapping Methods 0.000 claims description 25
- 239000012530 fluid Substances 0.000 claims description 14
- 238000009434 installation Methods 0.000 claims description 2
- 239000000243 solution Substances 0.000 abstract description 5
- 238000002347 injection Methods 0.000 abstract description 4
- 239000007924 injection Substances 0.000 abstract description 4
- 238000007599 discharging Methods 0.000 abstract 15
- 238000005516 engineering process Methods 0.000 description 6
- 238000006722 reduction reaction Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Landscapes
- Exhaust Gas After Treatment (AREA)
Abstract
The utility model discloses a urea solution tank for an SCR aftertreatment system. The urea solution tank comprises a tank body. The tank body comprises at least one liquid injection port, at least one liquid discharging port and at least one liquid discharging valve group, wherein the at least one liquid injection port is provided with a tank cover for sealing the liquid injection ports; the liquid discharging ports are arranged at the bottom of the tank body and extend outwards to be provided with a liquid channel; the liquid discharging valve groups are arranged in the liquid channel, each liquid discharging valve group comprises a valve body fixedly arranged in the liquid channel and a liquid discharging bolt movably arranged on the valve body, and the liquid discharging bolt is partially placed in the liquid channel. By arranging the liquid discharging valve groups in the liquid channel of the liquid discharging ports, the liquid discharging bolts of the liquid discharging valve groups are not exposed out of the liquid discharging ports, the bump to the liquid discharging bolts is effectively avoided, the liquid discharging bolts do not loosen or deform, and the liquid discharging ports do not leak liquid.
Description
Technical field
The utility model relates to a kind of after-treatment system urea liquid supplier, relates in particular to a kind of SCR after-treatment system urea liquid tank.
Background technique
At present, along with serious pollution of atmosphere has been supervened in the fast development of Motor Vehicle, and pollution of atmosphere presents region composite type feature.Many metropolitan pollution of atmosphere turn to coal smoke and automotive composite type to pollute by coal-smoke pollution, and minority megalopolis has obviously shown photochemical smog type (being motor-vehicle tail-gas type) pollution of atmosphere.Therefore, the research of Diesel Emission Control Technologies: and important and extremely urgent.
From the development of commercial car, diesel engine is its major impetus.The general emission request that adopts supercharging technology diesel-oil vehicle can meet the I stage, the II stage has adopted charge inter cooling, and the III stage has been introduced electronic fuel injection technology, and the IV stage need to be carried out reprocessing to exhaust in above-mentioned technical foundation.
Mainly contain two technology paths at the exhaust after treatment system of IV stage emission control: (1), reduce PM discharge+SCR selective catalysis reduction reaction and fall low NOx drainage by optimizing motor (emission controls by improving combustion technology is optimized oil spout, Optimizing Combustion etc.); (2), adopt EGR waste gas to fall low NOx drainage+employing particulate trap at circulating technology and reduce PM discharge.Be more prone at present use the first scheme.What SCR selective catalysis reduction reaction fell that the mode of low NOx drainage adopts at present is that urea liquid supplier is realized, by reducing agent urea solution is injected in engine exhaust, under the effect of discarded air temperature and current, urea energy fast decoupled discharges ammonia, NOx reduction is become to nitrogen, reach the effect that reduces NOx.Because urea liquid has the advantages such as stable performance, simple, the required reducing agent relative quantity of chemical reaction are few and obtain people's popularization and use.On urea liquid tank for splendid attire urea liquid, tap hole is set at present, tap hole place is provided for opening or sealing the discharge valve group of tap hole, tapping bolt in discharge valve group protrudes from tap hole, therefore in the use of urea liquid tank or handling process, tapping bolt is easy to be collided with, cause tapping bolt looseness or distortion, and then cause the situation of the tap hole generation leakage of urea liquid tank.
Model utility content
The purpose of this utility model is to propose a kind of SCR after-treatment system urea liquid tank, and it can effectively prevent that tapping bolt from being collided with, and ensures that tapping bolt is not loosening or indeformable, and then ensures tap hole no leakage.
For reaching this object, the utility model by the following technical solutions:
A kind of SCR after-treatment system urea liquid tank, comprises tank body, and described tank body comprises:
At least one spout, is provided for sealing the cover of described spout in described spout;
At least one tap hole, described tap hole is arranged at the bottom of described tank body, is stretched out fluid passage is set by described tap hole;
At least one discharge valve group, described discharge valve is mounted in described fluid passage, described discharge valve group comprises the valve body that is fixedly installed in described fluid passage and is movablely located at the tapping bolt on described valve body, and described tapping bolt part is placed in described fluid passage.
As a kind of preferred version of SCR after-treatment system urea liquid tank, described valve body comprises valve body body, in described valve body body, there is the bolt passage that described tapping bolt passes through, the inwall of described bolt passage arranges the first screw thread, and one end of described valve body body is provided for placing the sealed groove of seal ring;
Described tapping bolt comprises bolt body, the periphery of one end of described bolt body arranges the second screw thread matching with described the first screw thread, the other end of described bolt body arranges block, between described block and described sealed groove, seal ring is set, described seal ring is set in described bolt body periphery.
As a kind of preferred version of SCR after-treatment system urea liquid tank, described block is provided for described tapping bolt to screw in or screw out the tapped blind hole in described valve body away from a side of described bolt body, described tapped blind hole is extended in described bolt body by described block, but does not run through described bolt body.
As a kind of preferred version of SCR after-treatment system urea liquid tank, the external diameter of described block is greater than the external diameter of described bolt body or the diameter of described bolt passage, and the external diameter of described block is less than the size of described sealed groove.
As a kind of preferred version of SCR after-treatment system urea liquid tank, described valve body body periphery at least annular arranges a circle fixed groove.
As a kind of preferred version of SCR after-treatment system urea liquid tank, on described tank body, be concaved with urea pump installation urea pump groove.
As a kind of preferred version of SCR after-treatment system urea liquid tank, on described tank body and near the top of described tank body, viewing window is set.
As a kind of preferred version of SCR after-treatment system urea liquid tank, on described tank body, urea sensor is set.
Contrast prior art, the beneficial effects of the utility model are: by discharge valve group being arranged in the fluid passage of tap hole, the tapping bolt of discharge valve group is not exposed on outside tap hole, effectively prevent that tapping bolt from being collided with, ensure that tapping bolt is not loosening or indeformable, and then ensure tap hole no leakage.
Brief description of the drawings
Fig. 1 is the structural representation of the SCR after-treatment system urea liquid tank described in the present embodiment;
Fig. 2 is the schematic side view of the SCR after-treatment system urea liquid tank described in the present embodiment;
Fig. 3 is the A place enlarged diagram of the SCR after-treatment system urea liquid tank described in the present embodiment;
Fig. 4 is the structural representation of the valve body of the discharge valve group described in the present embodiment;
Fig. 5 is the structural representation of the tapping bolt of the discharge valve group described in the present embodiment.
In Fig. 1 to 5:
1, tank body; 11, spout; 12, tap hole; 121, fluid passage; 13, urea pump groove; 2, cover;
3, discharge valve group; 31, valve body; 311, valve body body; 312, bolt passage; 313, the first screw thread; 314, sealed groove; 315, fixed groove; 32, tapping bolt; 321, bolt body; 322, the second screw thread; 323, block; 324, tapped blind hole; 33, seal ring;
4, viewing window; 5, urea sensor.
Embodiment
Further illustrate the technical solution of the utility model below in conjunction with accompanying drawing and by embodiment.
As illustrated in fig. 1 and 2 in embodiment, Novel SCR after-treatment system urea liquid tank of the present utility model, comprise tank body 1, tank body 1 comprises at least one spout 11, in spout 11, be provided for sealing the cover 2 of spout 11, at least one tap hole 12, tap hole 12 is arranged at the bottom of tank body 1, stretch out fluid passage 121 is set by tap hole 12, at least one discharge valve group 3, discharge valve group 3 is located in fluid passage 121, discharge valve group 3 comprises the valve body 31 that is fixedly installed in fluid passage 121 and is movablely located at the tapping bolt 32 on valve body 31, tapping bolt 32 parts are placed in fluid passage 121.
In the present embodiment, the top of tank body 1 arranges a spout 11, and bottom arranges a tap hole 12, and tap hole 12 is interior arranges a discharge valve group 3.
As shown in Fig. 3 to 5, valve body 31 comprises valve body body 311, in valve body body 311, have the bolt passage 312 that tapping bolt 32 passes through, the inwall of bolt passage 312 arranges the first screw thread 313, and one end of valve body body 311 is provided for placing the sealed groove 314 of seal ring 33.
Tapping bolt 32 comprises bolt body 321, the periphery of one end of bolt body 321 arranges the second screw thread 322 matching with the first screw thread 313, the other end of bolt body 321 arranges block 323, between block 323 and sealed groove 314, seal ring 33 is set, seal ring 33 is set in bolt body 321 peripheries.
Block 323 is provided for tapping bolt 32 to screw in or screw out the tapped blind hole 324 in valve body 31 away from a side of bolt body 321, and tapped blind hole 324 is extended in bolt body 321 by block 323, but through bolt body 321 not.
The external diameter of block 323 is greater than the external diameter of bolt body 321 or the diameter of bolt passage 312, and the external diameter of block 323 is less than the size of sealed groove 314.
Valve body body 311 peripheries at least annular arrange a circle fixed groove 315.In the present embodiment, valve body body 311 peripheries arrange a circle fixed groove 315.
On tank body 1, being concaved with urea pump installs with urea pump groove 13.
On tank body 1 and near the top of tank body 1, viewing window 4 is set.
Urea sensor 5 is set on tank body 1.
" first " of the present utility model, " second " etc., only, for being distinguished on describing, do not have special implication.
Know-why of the present utility model has below been described in conjunction with specific embodiments.These are described is in order to explain principle of the present utility model, and can not be interpreted as by any way the restriction to the utility model protection domain.Based on explanation herein, those skilled in the art does not need to pay performing creative labour can associate other embodiment of the present utility model, within these modes all will fall into protection domain of the present utility model.
Claims (7)
1. a SCR after-treatment system urea liquid tank, comprises tank body, it is characterized in that, described tank body comprises:
At least one spout, is provided for sealing the cover of described spout in described spout;
At least one tap hole, described tap hole is arranged at the bottom of described tank body, is stretched out fluid passage is set by described tap hole;
At least one discharge valve group, described discharge valve is mounted in described fluid passage, described discharge valve group comprises the valve body that is fixedly installed in described fluid passage and is movablely located at the tapping bolt on described valve body, and described tapping bolt part is placed in described fluid passage;
Described valve body comprises valve body body, has the bolt passage that described tapping bolt passes through in described valve body body, and the inwall of described bolt passage arranges the first screw thread, and one end of described valve body body is provided for placing the sealed groove of seal ring;
Described tapping bolt comprises bolt body, the periphery of one end of described bolt body arranges the second screw thread matching with described the first screw thread, the other end of described bolt body arranges block, between described block and described sealed groove, seal ring is set, described seal ring is set in described bolt body periphery.
2. SCR after-treatment system urea liquid tank according to claim 1, it is characterized in that, described block is provided for described tapping bolt to screw in or screw out the tapped blind hole in described valve body away from a side of described bolt body, described tapped blind hole is extended in described bolt body by described block, but does not run through described bolt body.
3. SCR after-treatment system urea liquid tank according to claim 2, is characterized in that, the external diameter of described block is greater than the external diameter of described bolt body or the diameter of described bolt passage, and the external diameter of described block is less than the size of described sealed groove.
4. SCR after-treatment system urea liquid tank according to claim 3, is characterized in that, described valve body body periphery at least annular arranges a circle fixed groove.
5. according to the SCR after-treatment system urea liquid tank described in claim 1 to 4 any one, it is characterized in that, on described tank body, be concaved with urea pump installation urea pump groove.
6. according to the SCR after-treatment system urea liquid tank described in claim 1 to 4 any one, it is characterized in that, on described tank body and near the top of described tank body, viewing window is set.
7. according to the SCR after-treatment system urea liquid tank described in claim 1 to 4 any one, it is characterized in that, on described tank body, urea sensor is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320851039.5U CN203822423U (en) | 2013-12-20 | 2013-12-20 | Urea solution tank for SCR aftertreatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320851039.5U CN203822423U (en) | 2013-12-20 | 2013-12-20 | Urea solution tank for SCR aftertreatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203822423U true CN203822423U (en) | 2014-09-10 |
Family
ID=51477937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320851039.5U Expired - Lifetime CN203822423U (en) | 2013-12-20 | 2013-12-20 | Urea solution tank for SCR aftertreatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203822423U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696835A (en) * | 2013-12-20 | 2014-04-02 | 无锡市凯龙汽车设备制造有限公司 | Urea solution tank for SCR aftertreatment system |
-
2013
- 2013-12-20 CN CN201320851039.5U patent/CN203822423U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696835A (en) * | 2013-12-20 | 2014-04-02 | 无锡市凯龙汽车设备制造有限公司 | Urea solution tank for SCR aftertreatment system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140910 |