CN213144572U

CN213144572U - Automobile-used urea case of joining in marriage ICV valve

Info

Publication number: CN213144572U
Application number: CN202021485897.9U
Authority: CN
Inventors: 乐升华; 聂晓龙; 王彬; 卢才兴; 肖博文; 陈龙; 曾志斌
Original assignee: Jiangling Motors Corp Ltd
Current assignee: Jiangling Motors Corp Ltd
Priority date: 2020-07-24
Filing date: 2020-07-24
Publication date: 2021-05-07
Anticipated expiration: 2030-07-24

Abstract

The utility model provides a vehicle urea box with an ICV valve, which comprises a urea filling pipe, a urea filling vent pipe, an upper shell of the urea box, a lower shell of the urea box and the ICV valve; the urea injection pipe is welded with an interface on the upper shell of the urea box after injection molding; the urea filling vent pipe is connected with the upper shell of the urea box in a welding mode; and the ICV valve is welded and fixed on the upper shell of the urea box. The utility model can effectively solve the problems of insufficient free volume of the box body and expansion damage when the urea freezes and expands due to over-full filling and insufficient expansion volume of the urea box; and the problems of urea waste and environmental pollution caused by urea back-injection outside the filling pipe in the filling process and the process of violent driving working conditions of the vehicle can be avoided.

Description

Automobile-used urea case of joining in marriage ICV valve

Technical Field

The utility model relates to a urea case technical field specifically is a join in marriage automobile-used urea case of ICV valve.

Background

Along with the implementation of national six-emission regulations, the automobile exhaust emission limit value and the market monitoring become stricter and stricter, and the development of an exhaust aftertreatment system by a host factory becomes more and more cautious. The nitrogen oxide is one of the most main pollutants of the automobile exhaust, and directly endangers the health of people, and in order to meet the national six regulations of diesel vehicles, a Selective Catalytic Reduction (SCR) system is required to be adopted by an after-treatment system to treat the nitrogen oxide. At present, an SCR system mainly comprises an SCR catalyst, a urea injection system, a urea heating system, a urea supply system and a urea box.

The urea box is integrated by urea case body, urea filling port, filling lid. In practical application, the customer is found to easily make urea filling overfill (exceed effective filling volume) when filling urea to the urea case, and when urea is in low temperature environment (less than or equal to-11 ℃), the expansion phenomenon that freezes easily appears, leads to the urea case to damage, so need carry on spacingly to urea filling, reserves certain space for urea expansion, better protection box, brings better experience for the user. Meanwhile, in the design of the traditional urea box, although a limiting device is added, the problem that urea is reversely sprayed out of the urea filling pipe occurs in the urea filling process and the violent driving working condition of a vehicle, so that urea is wasted and the environment is polluted. The novel design is put forward and designed to be implemented under the condition.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims at solving the problems existing in the use process of the urea box and the defects of the prior art, and provides the urea box with the ICV valve, so that the problem of urea over-filling is solved, the urea box has a limiting function, the problem that the expansion volume of the urea box is insufficient due to over-filling can be effectively solved, and the problem that the expansion damage of the urea box is caused due to insufficient empty volume of the urea box when the urea freezes and expands is avoided; and the problems of urea waste and environmental pollution caused by urea back-injection outside the filling pipe in the filling process and the process of violent driving working conditions of the vehicle can be effectively solved.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a vehicle urea box with an ICV valve comprises a urea filling pipe, a urea filling vent pipe, an upper shell of the urea box, a lower shell of the urea box and the ICV valve; the urea injection pipe is welded with an interface on the upper shell of the urea box after injection molding; the urea filling vent pipe is connected with the upper shell of the urea box in a welding mode; and the ICV valve is welded and fixed on the upper shell of the urea box.

The ICV valve comprises a hinge, a spring, a valve, a connecting pipe, a sealing ring and a valve cover, wherein the spring is fixed on the hinge; the spring is connected with the valve cover; the connecting pipe is connected with the urea filling pipe in a welding mode; and a sealing ring is arranged between the valve and the valve cover.

The urea filling vent pipe extends into the upper shell of the urea box, is welded with the FLV float valve and then is welded with the upper shell of the urea box.

And the urea filling pipe extends into the upper shell of the urea box, is welded with the ICV valve and then is welded with the upper shell of the urea box.

The ICV valve is welded with the urea filling pipe through a connecting pipe.

The ICV valve is of a spring type structure, and the valve cover is controlled to be closed through a spring.

The upper limit of the floater arranged on the FLV float valve and the rated full liquid level of the urea tank are in the same horizontal plane, when the floater of the FLV float valve reaches the upper limit, the urea filling vent pipe is closed, the pressure in the urea tank rises, the ICV valve is locked, and urea can not be filled into the urea tank any more.

The ICV valve has one-way permeability, and urea can be injected from the urea filling pipe but cannot be back-sprayed.

The beneficial effects of the utility model reside in that:

1) an ICV valve is added at a filling port, an FLV valve is added at a vent pipe orifice, the upper limit of a floater of the FLV valve and the rated full liquid level are positioned on a uniform horizontal plane, when the FLV valve is positioned at the upper limit, the vent pipe is closed, the pressure of a box body rises, the ICV valve is locked tightly, urea can not be filled into the box body any more, the maximum filling liquid level of the box body is kept at the rated full liquid level, a space is provided for the expansion of urea solution, and the box body is prevented from being damaged by expansion;

2) in the urea filling process, if the filling rate is too fast, the pressure in the urea box can be increased sharply, and after the filling is stopped, the pressure in the urea box is released sharply, so that the urea is sprayed to the filling pipe along the urea pipe in a reverse mode, the urea is wasted, and the environment is polluted. The ICV valve has one-way permeability, and is in a closed state after filling is stopped, so that back spray can be effectively prevented, and convenience is brought to users;

3) in the violent driving stage of the vehicle, urea splashes out of the filling pipe and permeates out of the urea box body. When the ICV valve is added, the ICV valve is tightly closed in the process of violent running of the vehicle, and urea splashing can be effectively controlled.

Drawings

FIG. 1 is a schematic view of a vehicle urea tank assembly equipped with an ICV valve according to the present invention;

FIG. 2 is a schematic view of the ICV valve mounting position of a vehicle urea tank equipped with the ICV valve according to the present invention;

FIG. 3 is a front view of an ICV valve of a vehicle urea tank equipped with the ICV valve of the present invention;

FIG. 4 is a sectional view of an ICV valve of a vehicle urea tank equipped with the ICV valve of the present invention;

fig. 5 is the utility model discloses a join in marriage automobile-used urea case ICV valve structural schematic of ICV valve.

In the figure: 1. a urea filling pipe; 2. a breather pipe; 3. an upper shell of the urea box; 4. a urea tank lower housing; 5. an ICV valve; 6. a hinge; 7. a spring; 8. a valve; 9. a connecting pipe; 10. a seal ring; 11. a valve cover; 12. FLV float valve.

Detailed Description

For a better understanding of the present invention, the following description is given in conjunction with the accompanying drawings.

Example (b): see fig. 1-5.

A vehicle urea box with an ICV valve comprises a urea filling pipe 1, a urea filling vent pipe 2, an upper urea box shell 3, a lower urea box shell 4 and an ICV valve 5; the urea box upper shell 3 and the urea box lower shell 4 are connected through hot welding, and the urea filling pipe 1 and an interface on the urea box upper shell 3 are welded after injection molding; the urea filling vent pipe 2 is connected with the urea box upper shell 3 in a welding mode; the ICV valve 5 is welded and fixed on the urea box upper shell 3.

The ICV valve 5 comprises a hinge 6, a spring 7, a valve 8, a connecting pipe 9, a sealing ring 10 and a valve cover 11, wherein the spring 7 is fixed on the hinge 6; the spring 7 is connected with the valve cover 11; the connecting pipe 9 is connected with the urea filling pipe 1 in a welding mode; and a sealing ring 10 is arranged between the valve 8 and the valve cover 11.

The urea filling vent pipe 2 extends into the urea box upper shell 3, is welded with the FLV float valve 12 and then is welded with the urea box upper shell 3.

The urea filling pipe 1 extends into the urea box upper shell 3, is welded with the ICV valve 5 and then is welded with the urea box upper shell 3.

The ICV valve 5 is welded to the urea filler pipe 1 via a connecting pipe 9.

The ICV valve 5 is of a spring type structure, and the valve cover 11 is controlled to be closed through a spring 7.

The upper limit of the floater of the FLV floater valve 12 and the rated full liquid level of the urea tank are on the same horizontal plane, when the floater of the FLV floater valve 12 reaches the upper limit, the urea filling vent pipe 2 is closed, the pressure in the urea tank rises, the ICV valve 5 is locked tightly, and urea can not be filled into the urea tank any more.

The ICV valve 5 has one-way permeability, and urea can be injected from the urea filling pipe 1 but cannot be back-sprayed.

As shown in figure 1, the upper shell 3 of the urea box is connected with the lower shell 4 of the urea box through hot welding; the urea filling pipe 1 and the interface of the urea box upper shell 3 are welded after injection molding; the breather pipe 2 is welded with the FLV valve 12 and then with the urea tank upper shell 3. The ICV valve 5 and the urea filling pipe 1 are fixed on the upper shell 3 of the urea box through welding; the ICV valve 5 is designed in a spring mode, liquid is filled into the urea tank from a filling port, the valve cover 11 is controlled by jacking the spring 7 through pressure, after the pressure disappears, the valve is pressed down through the spring force, and the sealed liquid flows backwards. Wherein the connecting pipe 9 is connected with the urea filling pipe 1 by welding, and the sealing gasket 10 plays a role in sealing urea liquid.

The utility model relates to a join in marriage urea case of ICV valve, when filling urea, urea passes through urea filling pipe 1 gets into the urea case, and the gaseous leading-in atmosphere of urea filling breather pipe 2 in the urea case passes through, transmits pressure to urea filler, and when urea reachs rated capacity, the float of FLV valve 12 on the breather pipe 2 plugs up breather pipe 2, and urea incasement pressure rises, and box internal pressure is greater than the outside, and ICV valve 5 closes, stops the urea filling, and the rifle is jumped to the urea rifle, reaches limit function. The utility model discloses increase ICV valve 5 at urea filler pipe 1, make urea liquid can only one-way flow, can effectively prevent to splash and the back flush outside the urea case because of urea liquid, and lead to extravagant urea and polluted environment scheduling problem.

Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the present invention can be modified or replaced with other embodiments without departing from the spirit and scope of the present invention, and all such modifications and equivalent substitutions are intended to be encompassed by the scope of the following claims.

Claims

1. A vehicle urea box with an ICV valve is characterized by comprising a urea filling pipe (1), a urea filling vent pipe (2), an upper shell (3) of the urea box, a lower shell (4) of the urea box and the ICV valve (5); the urea box upper shell (3) and the urea box lower shell (4) are connected through hot welding, and the urea filling pipe (1) and an interface on the urea box upper shell (3) are welded after injection molding; the urea filling vent pipe (2) is connected with the urea box upper shell (3) in a welding mode; the ICV valve (5) is welded and fixed on the urea box upper shell (3).

2. A vehicle urea tank equipped with an ICV valve according to claim 1, wherein said ICV valve (5) comprises a hinge (6), a spring (7), a valve (8), a connecting pipe (9), a seal ring (10) and a valve cover (11), said spring (7) being fixed on the hinge (6); the spring (7) is connected with the valve cover (11); the connecting pipe (9) is connected with the urea filling pipe (1) in a welding mode; and a sealing ring (10) is arranged between the valve (8) and the valve cover (11).

3. A vehicle urea tank with an ICV valve according to claim 1, characterized in that the urea filling vent pipe (2) extends into the upper housing (3) of the urea tank, and is welded to the upper housing (3) of the urea tank after being welded to the FLV float valve (12).

4. A vehicle urea tank with an ICV valve according to claim 1, characterized in that the urea filling pipe (1) extends into the upper shell (3) of the urea tank, and is welded with the ICV valve (5) and then welded with the upper shell (3) of the urea tank.

5. A tank for vehicle urea with an ICV valve according to claim 2, characterised in that said ICV valve (5) is welded to the urea filler pipe (1) by means of a connecting pipe (9).

6. A tank for vehicle urea with an ICV valve according to claim 2, characterized in that said ICV valve (5) is of spring type, the closing of the valve cover (11) being controlled by means of a spring (7).

7. A vehicle urea tank with an ICV valve according to claim 3, characterized in that the FLV float valve (12) is provided with a float upper limit at the same level as the rated full level of the urea tank, when the FLV float valve (12) reaches the upper limit, the urea filling vent pipe (2) is closed, the pressure in the urea tank rises, the ICV valve (5) is locked, and no urea can be filled into the urea tank any more.

8. A tank for vehicle urea with an ICV valve according to claim 1, characterised in that said ICV valve (5) has a one-way permeability and urea is injected through the urea filler pipe (1) but not back-injected.