CN202851120U - Control device for ammonia concentration of urea tank filling nozzle - Google Patents
Control device for ammonia concentration of urea tank filling nozzle Download PDFInfo
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- CN202851120U CN202851120U CN201220476360.5U CN201220476360U CN202851120U CN 202851120 U CN202851120 U CN 202851120U CN 201220476360 U CN201220476360 U CN 201220476360U CN 202851120 U CN202851120 U CN 202851120U
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- urea
- filling
- pipe
- ammonia concentration
- valve
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Abstract
The utility model relates to a control device for ammonia concentration of a urea tank filling nozzle. The control device is arranged on a urea tank body. The control device for the ammonia concentration of the urea tank filling nozzle is characterized by comprising at least one urea filling pipe and a control unit used for adjusting the ammonia concentration, wherein the control unit comprises a control valve and at least two urea filling exhaust pipes. The control device for the ammonia concentration of the urea tank filling nozzle has the advantages of being simple in structure, low in cost, and convenient to operate, achieving the purposes of a small amount discharge of ammonia gas and ammonia gas outlet being far away from the urea filling nozzle, reducing harm of ammonia gas to bodies of users, and lowering the contamination degree to the air.
Description
Technical field
The utility model relates to a kind of ammonia concentration control gear, relates in particular to a kind of urea box filling mouth of pipe ammonia concentration control gear.
Background technique
Enhancing along with the world government environmental protection consciousness, relevant policy and rules have proposed stricter requirement to automobile main frame maker, particularly require more and more stricter to discharged nitrous oxides in the vehicle exhaust, enforcement along with EURO 6, the emission limit of nitrogen oxide is 0.07g/km, meet this requirement, with regard to present controlling method, each assembly plant mainly adopts selective catalytic reduction system operating Selective Catalytic Reduction, i.e. SCR system; Utilize this system that automobile-used urea liquid is sprayed into offgas duct and NO
XChemical reaction occurs, and finally is converted into the nitrogen G﹠W and discharges.So the SCR system can solve exhaust gas from diesel vehicle NO effectively
XEmission problem, but need to use urea liquid in the SCR system, and this solution can resolve into the toxic gas-ammonia with penetrating odor.And be applied to now SCR urea box storage system on the car body in filling during urea liquid, urea box inside produces certain density ammonia and can directly be discharged in the air by the filling mouth of pipe and the filling exhaust mouth of pipe of opening when filling, not only can produce corrosive action to some parts around the vehicle body, carry out the healthy of urea filling staff but also may endanger, also air is produced comparatively serious pollution, therefore, those skilled in the art is seeking suitable equipment always and is addressing the above problem, but effect is not ideal.
Summary of the invention
The utility model is just for the technical problem that exists in the prior art, provide a kind of simple in structure,
Cost is lower, the urea box of easy operating filling mouth of pipe ammonia concentration control gear, and this device not only can be realized the discharging that ammonia is a small amount of, and the ammonia exhaust port has reduced the ammonia harm healthy to the staff away from the urea mouth of pipe of annotating.
In order to solve the problems of the technologies described above, the technical solution of the utility model is as follows, a kind of urea box filling mouth of pipe ammonia concentration control gear, described control gear is arranged on the urea casing, it is characterized in that, described control gear comprises at least one urea filler pipe, and the control unit that is used for regulating ammonia concentration.
As a kind of improvement of the present utility model, described control unit comprises control valve and at least two urea filling exhaust pipes.This device has been realized the discharging that ammonia is a small amount of, and the ammonia exhaust port has reduced the ammonia harm healthy to the staff away from the urea mouth of pipe of annotating.
As a kind of improvement of the present utility model, described control valve comprises pressure retaining valve and unidirectional spring valve,
Wherein pressure retaining valve is arranged between two adjacent filling exhaust pipes, and the unidirectional spring valve is arranged between urea filler pipe and the filling exhaust pipe adjacent with this urea filler pipe.The unidirectional spring valve is so that the part ammonia forms circulation between urea box, filling exhaust pipe and urea filler pipe; After ammonia acquired a certain degree in the urea box, ammonia backed down pressure retaining valve, was discharged in the air by the filling exhaust pipe that communicates with atmosphere.
As a kind of improvement of the present utility model, described urea filler pipe comprises advancing of control urea filling
Mouth control valve and the filling mouth of pipe.
As a kind of improvement of the present utility model, described urea filling exhaust pipe comprises and is arranged at outlet pipe
The exhaust fitting at top and be arranged at the filling exhaust valve that exhaust pipe lower part is connected with urea box.
As a kind of improvement of the present utility model, described control unit comprises the first controlling component, second
Controlling component and at least two urea filling exhaust pipes.
As a kind of improvement of the present utility model, described the first controlling component comprises the valve body bearing, sealing
Structure, and be fixed on spring on the valve body bearing, sealing configuration is connected with the valve body bearing by spring.
As a kind of improvement of the present utility model, described the second controlling component is the urea filling gun, by the urea filling gun urea is injected the urea filler pipe.
As a kind of improvement of the present utility model, described the first controlling component also comprises O-ring seal, and described O-ring seal contacts with the filling exhaust inner tube wall, is fixed on the sealing configuration.The sealing circle at first guarantees between sealing configuration and the outlet pipe inwall sealing to ammonia and urea liquid; Secondly, the assurance sealing configuration can not be leading to the perforate of the outlet pipe of atmosphere and block in the process that moves back and forth, play buffer function.
As a kind of improvement of the present utility model, described urea filler pipe is connected with urea box by urea box filler pipe joint.
With respect to prior art, advantage of the present utility model is as follows, simple in structure, cost is lower, easy to operate, realized that a small amount of discharging of ammonia and ammonia exhaust port are away from the purpose of the urea filling mouth of pipe, reduce the harm of ammonia to user's body, reduced the pollution level to air.
Description of drawings
Fig. 1 is the utility model embodiment 1 structural representation;
Fig. 2 is part-structure enlarged view among the embodiment 1;
Fig. 3 is the utility model embodiment 4 structural representations;
Fig. 4 is that the utility model is implemented 4 filling beginning schematic representation;
Fig. 5 is that the utility model is implemented schematic representation in 4 filling processes;
Fig. 6 is that the utility model is implemented 4 filling end schematic representation;
Among the figure: 1 is the urea box filling mouth of pipe, and 2 is the unidirectional spring valve, and 3 is pressure retaining valve, and 4 are exhaust fitting, 5 is the filling exhaust pipe, and 6 is the filling exhaust pipe, and 7 is the filling exhaust valve, and 8 is the urea box housing, 9 is inlet control valve, and 10 is the urea filler pipe, and 21 is filling gun, 22 are the filling mouth of pipe, and 23 is sealing configuration, and 24 are O-ring seal, 25 is spring, and 26 is the valve body bearing, and 271 is the filling exhaust pipe, 272 is the filling exhaust pipe, and 28 is the urea box filler pipe, and 29 is urea box filler pipe joint.
Embodiment
In order to deepen that understanding and cognition of the present utility model is made detailed explanation below in conjunction with accompanying drawing to the utility model.
Embodiment 1:
Referring to Fig. 1,2, urea box filling mouth of pipe ammonia concentration control gear, described control gear is arranged on the urea box housing 8, and control gear comprises at least one urea filler pipe, and the control unit that is used for regulating ammonia concentration.Control unit comprises control valve and at least two filling exhaust pipes 5,6, wherein filling exhaust pipe 6 links to each other with urea box housing 8, another filling exhaust pipe 5 communicates with atmosphere, described control valve comprises pressure retaining valve 3 and unidirectional spring valve 2, wherein pressure retaining valve 3 is arranged between two adjacent filling exhaust pipes, and unidirectional spring valve 2 is arranged between urea filler pipe and the filling exhaust pipe adjacent with this urea filler pipe.Adopt pressure retaining valve 3 in the utility model and exhaust pipe mouth is set away from the design of filling mouth of pipe operation interface.At outlet pipe near pressure retaining valve 3 of Position Design of the filling mouth of pipe and final outlet pipe opening away from user interface.Simultaneously, be provided with a unidirectional spring valve 2 between outlet pipe and the urea filling mouth of pipe, this unidirectional spring valve utilizes the opening and closing of gas pressure control self; The unidirectional spring valve of outlet pipe and the filling mouth of pipe is opened during filling, and the two is in the state that communicates, and during stopping filling, the unidirectional spring valve cuts out, and the two is in non-communicating state.When carrying out the urea filling, the a large amount of ammonias that produce during filling at first can back down the unidirectional spring valve 2 in the filling mouth of pipe, part ammonia forms circulation between urea box 8, outlet pipe 6 and filler pipe 10, the pressure retaining valve 3 in the filling exhaust pipe also is in closed condition at this moment; When the ammonia in the casing reached certain pressure, pressure retaining valve 3 was opened, and the part ammonia will be discharged in the air by outlet pipe 5 openings away from the filling mouth of pipe.
Utilize this kind structural design, both certain density ammonia can be limited in the urea box, reduce to be discharged into Ammonia in Air gas content, simultaneously, also with the ammonia of discharging away from user interface, reduced the health harm to the user.
This technological scheme is controlled at the annotate ammonia concentration of the mouth of pipe of urea liquid in certain scope, can satisfy some relevant test standards, has also reduced the harm to client's health.
Embodiment 2:
Referring to Fig. 1,2, described urea filler pipe 10 comprises inlet control valve 9 and the filling mouth of pipe 1 of control urea filling.Inlet control valve 9 is used for controlling what of urea amount of adding.All the other structures are identical with embodiment 1 with advantage.
Embodiment 3:
Referring to Fig. 1,2, described urea filling exhaust pipe 6 comprises the exhaust fitting 4 that is arranged at the outlet pipe top and is arranged at the filling exhaust valve 7 that exhaust pipe lower part is connected with urea box.All the other structures are identical with embodiment 1 with advantage.
Embodiment 4:
Referring to Fig. 3, urea box filling mouth of pipe ammonia concentration control gear, described control gear is arranged on the urea box housing 8, and control gear comprises at least one urea box filler pipe 29, and the control unit that is used for regulating ammonia concentration.Described control unit comprises the first controlling component, the second controlling component and at least two filling exhaust pipes 271 and 272, wherein filling exhaust pipe 272 links to each other with urea box housing 8, another filling exhaust pipe 271 communicates with atmosphere, described the first controlling component comprises valve body bearing 26, sealing configuration 23, and be fixed on spring 25 on the valve body bearing, and sealing configuration 23 is connected with valve body bearing 26 by spring 25, and described the second controlling component is urea filling gun 21.Be arranged on opening one end of filling exhaust pipe 271 near the urea filler pipe in the utility model and outlet pipe Open Side Down and away from the filling mouth of pipe 22, the opening and closing of exhaust pipe mouth are controlled by the triggering of filling gun 21, simultaneously, when filling, the state that almost keeps sealing between urea filling gun 21 and the filling mouth of pipe 22, avoided a large amount of ammonias to be gathered in the user interface scope, during non-filling state, the ammonia that produces in the urea box housing is discharged in the outside air by the work outlet valve, thereby has reduced the ammonia concentration around the filling mouth of pipe operation interface.
Referring to Fig. 4-Fig. 6, in carrying out the urea filling process, when urea filling gun 21 injects the urea filling mouth of pipe 22 and moves down, filling gun 21 contacts with sealing configuration 23 and promote sealing configuration 23 in the process that moves down and moves backward, thereby open the opening of filling exhaust pipe 271, the ammonia that produce in the urea filling process this moment is discharged in the air by the filling exhaust pipe 271 of opening, because therefore filling exhaust pipe 271 openings can not gather a large amount of ammonias away from the filling mouth of pipe in user interface.
When stopping the filling of urea, filling gun 21 withdraws from the filling mouth of pipe, this moment, sealing configuration 23 utilized the tension force of spring 25 to travel forward, until filling gun 21 withdraws from the filling mouth of pipe 22 fully, spring 25 recovers deformation, sealing configuration 23 is kept in the center and again filling exhaust pipe 271 openings is sealed, and the ammonia in the urea box forms circulation between urea box housing 8, filling exhaust pipe 272 and urea box filler pipe 28, and unnecessary ammonia can be discharged in the air by the work outlet valve.Urea liquid can the be annotated ammonia concentration of the mouth of pipe of this technological scheme is controlled in certain scope, can satisfy some relevant test standards, has also reduced the harm to client's health.
Embodiment 5:
Described the first controlling component also comprises O-ring seal 24, and the quantity of seal ring is 2, and wherein O-ring seal 24 contacts with filling exhaust pipe 271 inwalls, is fixed on the sealing configuration.The sealing circle at first guarantees between sealing configuration and the filling exhaust inner tube wall sealing to ammonia and urea liquid; Secondly, guarantee sealing configuration in the process that moves back and forth, can not be leading to atmosphere outlet pipe hold empty calorie, play buffer function.All the other structures are identical with embodiment 4 with advantage.
Embodiment 6:
Described urea filler pipe 28 is connected with urea box housing 8 by urea box filler pipe joint 29.All the other structures are identical with embodiment 4 with advantage.
The utility model can also be combined to form new technological scheme with at least one and the embodiment 1 in the technical characteristics described in the embodiment 2,3.
The utility model can also be combined to form new technological scheme with at least one and the embodiment 4 in the technical characteristics described in the embodiment 5,6.
Need to prove above-described embodiment, only is preferred embodiment of the present utility model, is not to limit protection domain of the present utility model, and the equivalents of having done on the basis of technique scheme all belongs to protection domain of the present utility model.
Claims (10)
1. urea box filling mouth of pipe ammonia concentration control gear, described control gear is arranged on the urea casing, it is characterized in that, and described control gear comprises at least one urea filler pipe, and is used for regulating the control unit of ammonia concentration.
2. ammonia concentration control gear according to claim 1 is characterized in that, described control unit comprises control valve and at least two urea filling exhaust pipes.
3. ammonia concentration control gear according to claim 2, it is characterized in that, described control valve comprises pressure retaining valve and unidirectional spring valve, wherein pressure retaining valve is arranged between two adjacent filling exhaust pipes, and the unidirectional spring valve is arranged between urea filler pipe and the filling exhaust pipe adjacent with this urea filler pipe.
4. according to claim 2 or 3 described ammonia concentration control gear, it is characterized in that described urea filler pipe comprises inlet control valve and the filling mouth of pipe of control urea filling.
5. according to claim 2 or 3 described ammonia concentration control gear, it is characterized in that described urea filling exhaust pipe comprises the exhaust fitting that is arranged at the outlet pipe top and is arranged at the filling exhaust valve that exhaust pipe lower part is connected with urea box.
6. ammonia concentration control gear according to claim 1 is characterized in that, described control unit comprises the first controlling component, the second controlling component and at least two urea filling exhaust pipes.
7. ammonia concentration control gear according to claim 6 is characterized in that, described the first controlling component comprises the valve body bearing, sealing configuration, and be fixed on spring on the valve body bearing, sealing configuration is connected with the valve body bearing by spring.
8. ammonia concentration control gear according to claim 6 is characterized in that, described the second controlling component is the urea filling gun.
9. according to claim 7 or 8 described ammonia concentration control gear, it is characterized in that described the first controlling component also comprises O-ring seal, described O-ring seal contacts with the filling exhaust inner tube wall, is fixed on the sealing configuration.
10. according to claim 7 or 8 described ammonia concentration control gear, it is characterized in that described urea filler pipe is connected with the urea box housing by urea box filler pipe joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220476360.5U CN202851120U (en) | 2012-09-19 | 2012-09-19 | Control device for ammonia concentration of urea tank filling nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220476360.5U CN202851120U (en) | 2012-09-19 | 2012-09-19 | Control device for ammonia concentration of urea tank filling nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202851120U true CN202851120U (en) | 2013-04-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220476360.5U Expired - Lifetime CN202851120U (en) | 2012-09-19 | 2012-09-19 | Control device for ammonia concentration of urea tank filling nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202851120U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865127A (en) * | 2012-09-19 | 2013-01-09 | 亚普汽车部件股份有限公司 | Control device for ammonia concentration at filling pipe opening of urea box |
| CN103939187A (en) * | 2014-03-27 | 2014-07-23 | 安徽江淮汽车股份有限公司 | Urea tank of light bus |
-
2012
- 2012-09-19 CN CN201220476360.5U patent/CN202851120U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865127A (en) * | 2012-09-19 | 2013-01-09 | 亚普汽车部件股份有限公司 | Control device for ammonia concentration at filling pipe opening of urea box |
| CN102865127B (en) * | 2012-09-19 | 2015-11-18 | 亚普汽车部件股份有限公司 | Urea box filling mouth of pipe ammonia concentration control device |
| CN103939187A (en) * | 2014-03-27 | 2014-07-23 | 安徽江淮汽车股份有限公司 | Urea tank of light bus |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130403 |
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| CX01 | Expiry of patent term |