CN215110743U - Fuel tank steam control valve - Google Patents
Fuel tank steam control valve Download PDFInfo
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- CN215110743U CN215110743U CN202121135541.7U CN202121135541U CN215110743U CN 215110743 U CN215110743 U CN 215110743U CN 202121135541 U CN202121135541 U CN 202121135541U CN 215110743 U CN215110743 U CN 215110743U
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- control valve
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- liquid collecting
- pipe
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Abstract
The utility model provides a fuel tank steam control valve, which comprises a shell, a sealing element, a liquid collecting pipe, an air outlet pipe and an elastic reset element, wherein a containing cavity is arranged in the shell, and the shell is provided with an air inlet, an air pipe installing port and an air outlet; the sealing element is positioned in the accommodating cavity and is in sliding sealing fit with the side wall of the accommodating cavity along the vertical direction; the liquid collecting pipe is arranged in the second chamber, the bottom of the liquid collecting pipe is hermetically connected with the second chamber, the top of the liquid collecting pipe is provided with an opening, and an air outlet is formed in the side wall of the liquid collecting pipe; the air outlet pipe penetrates through the air pipe mounting opening and is communicated with the air outlet, the part of the air outlet pipe, which is positioned in the second cavity, is provided with an air guide hole communicated with the second cavity, and an air hole sealing cover area corresponding to the air guide hole is formed on the sealing piece; the elastic resetting piece is arranged in the first cavity and is connected with the sealing piece. The utility model provides a fuel tank steam control valve aims at realizing the flow that can effective control petrol steam, simplifies inner structure, reduction in production cost.
Description
Technical Field
The utility model belongs to the technical field of the automobile manufacturing, more specifically say, relate to a fuel tank steam control valve.
Background
A liquid accumulator is usually arranged on a connecting pipeline between the fuel tank and the carbon canister, and an electric control fuel tank control valve is also arranged on the pipeline of part of the vehicle types to control the steam in the fuel tank. But in order to guarantee that the vehicle can exhaust in a large number when refueling and starting, the gas pocket of control valve need design bigger, can lead to in the fuel steam that the oil tank was heated and is produced also can discharge in a large number to the charcoal jar under non-refueling operating mode, increases the absorption burden of charcoal jar, and long-term use can cause the charcoal jar to transship, leads to evaporative emission system inefficacy. In addition, the existing electric control oil tank control valve needs to be matched with other electronic elements for common use, so that the internal arrangement space is large, the system control is complex, and the cost is high.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a fuel tank steam control valve aims at realizing the flow that can effective control petrol steam, simplifies inner structure, reduction in production cost.
In order to achieve the above object, the utility model adopts the following technical scheme: there is provided a fuel tank vapor control valve comprising:
the air pipe device comprises a shell, a valve body and a valve body, wherein a containing cavity is arranged in the shell, and an air inlet, an air pipe mounting port and an air outlet are formed in the shell;
the sealing element is positioned in the accommodating cavity and is in sliding sealing fit with the side wall of the accommodating cavity along the vertical direction, the accommodating cavity is divided into a first cavity and a second cavity below the first cavity by the sealing element, and the exhaust port is positioned at the top of the shell and is communicated with the first cavity;
the liquid collecting pipe is arranged in the second chamber, the bottom of the liquid collecting pipe is hermetically connected with the second chamber, the top of the liquid collecting pipe is provided with an opening, and an air outlet is formed in the side wall of the liquid collecting pipe;
the gas outlet pipe penetrates through the gas pipe mounting opening and is communicated with the gas outlet, a gas guide hole communicated with the second chamber is formed in the part, located in the second chamber, of the gas outlet pipe, a gas hole sealing cover area corresponding to the gas guide hole is formed in the sealing element, and the top end of the gas outlet pipe is not higher than the top end of the liquid collecting pipe; and
elasticity resets, locates in the first chamber, and with the sealing member is connected, elasticity resets and is configured with and makes the sealing member laminating closing cap in open-ended pretightning force.
In a possible implementation manner, the sealing element is provided with a yielding groove which is in plug-in fit with the top end of the liquid collecting pipe.
In a possible implementation manner, a sealing block capable of being in plug-in fit with the air vent is further arranged on the sealing element, and the sealing block forms the air vent sealing cover area.
In a possible implementation manner, a first insertion block in insertion fit with the opening and a second insertion block in insertion fit with the air guide hole are arranged on the sealing element, and the height of the second insertion block is greater than that of the first insertion block.
In a possible implementation manner, the housing comprises a main body and a sealing cover arranged on the top of the main body in a covering mode, and the sealing cover is detachably connected with the main body.
In one possible implementation, the body is threadedly connected to the seal cap.
In one possible implementation, the exhaust port is connected to a regulating tube.
In a possible implementation manner, a telescopic guide cylinder is arranged on the shell, two ends of the guide cylinder are respectively abutted to the shell and the sealing piece, and the elastic resetting piece is arranged in the guide cylinder.
In one possible implementation, the guide cylinder is a bellows.
In a possible implementation manner, the casing is a cylindrical member, the liquid collecting pipe and the casing are coaxially arranged, and the air inlet and the air pipe mounting port are respectively located at two opposite sides of the casing to form an annular flow passage.
The utility model provides a fuel tank steam control valve's beneficial effect lies in: compared with the prior art, the utility model discloses fuel tank steam control valve can avoid in fuel steam gets into the charcoal jar in a large number according to the atmospheric pressure size automatically regulated sealing member state that holds the intracavity when the fuel tank normally works, can reduce the load of charcoal jar, can guarantee simultaneously that a large amount of fuel steam that the vehicle produced can be adsorbed by the charcoal jar when refueling and go. The collector tube can be collected liquefied fuel steam with holding the chamber, avoids liquid fuel to cause the charcoal jar to block up in getting into the charcoal jar to influence the adsorption efficiency of charcoal jar. The utility model discloses simple structure has reduced inside overall arrangement, has reduced manufacturing cost.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a fuel tank vapor control valve according to a first embodiment of the present invention;
FIG. 2 is a schematic diagram of an internal structure of a fuel tank vapor control valve according to an embodiment of the present invention;
fig. 3 is an exploded view of a fuel tank vapor control valve according to a first embodiment of the present invention;
fig. 4 is a sectional view of a fuel tank vapor control valve according to a second embodiment of the present invention during normal operation;
FIG. 5 is a cross-sectional view of a fuel tank vapor control valve according to a second embodiment of the present invention, shown in the figure, for cleaning a canister;
FIG. 6 is a cross-sectional view of a fuel tank vapor control valve according to a third embodiment of the present invention, shown in the figure, for cleaning a canister;
fig. 7 is a cross-sectional view of a fuel tank vapor control valve according to a third embodiment of the present invention during normal operation;
fig. 8 is a cross-sectional view of the fuel tank vapor control valve according to the third embodiment of the present invention during refueling;
FIG. 9 is a cross-sectional view of a fuel tank vapor control valve of a fourth embodiment of the present invention shown in the position of canister purge;
fig. 10 is a cross-sectional view of a fuel tank vapor control valve according to a fourth embodiment of the present invention during normal operation;
fig. 11 is a cross-sectional view of the fuel tank vapor control valve according to the fourth embodiment of the present invention during refueling travel;
fig. 12 is a cross-sectional view of a fuel tank vapor control valve according to a fifth embodiment of the present invention during normal driving.
In the figure: 1. a housing; 101. a main body; 102. a sealing cover; 103. an accommodating chamber; 1031. a second chamber; 1032. a first chamber; 2. an air inlet pipe; 3. an air outlet pipe; 301. an air vent; 4. a liquid collecting pipe; 5. a seal member; 501. a sealing block; 502. a yielding groove; 503. a first insert block; 504. a second insert block; 6. an elastic reset member; 7. an adjusting tube; 8. and a guide cylinder.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 12 together, a fuel tank vapor control valve according to the present invention will now be described. The fuel tank steam control valve comprises a shell 1, a sealing piece 5, a liquid collecting pipe 4, an air outlet pipe 3 and an elastic resetting piece 6, wherein a containing cavity 103 is arranged in the shell 1, and an air inlet, an air pipe mounting port and an air outlet are formed in the shell 1; the sealing member 5 is located in the accommodating cavity 103 and is in sliding sealing fit with the side wall of the accommodating cavity 103 along the up-down direction, the sealing member 5 divides the accommodating cavity 103 into a first chamber 1032 and a second chamber 1031 located below the first chamber 1032, and the exhaust port is located at the top of the housing 1 and is communicated with the first chamber 1032; the liquid collecting pipe 4 is arranged in the second chamber 1031, the bottom of the liquid collecting pipe 4 is hermetically connected with the second chamber 1031, the top of the liquid collecting pipe 4 is provided with an opening, and an air outlet is formed in the side wall of the liquid collecting pipe 4; the gas outlet pipe 3 penetrates through the gas pipe mounting opening and is communicated with the gas outlet, a gas guide hole 301 communicated with the second chamber 1031 is formed in the part, located in the second chamber 1031, of the gas outlet pipe 3, a gas hole cover sealing area corresponding to the gas guide hole 301 is formed in the sealing element 5, and the top end of the gas outlet pipe 3 is not higher than the top end of the liquid collecting pipe 4; elasticity returns piece 6 to locate in first chamber 1032 to be connected with sealing member 5, elasticity returns piece 6 to be configured with and makes sealing member 5 laminating closing cap in the pretightning force of opening.
When the vehicle refuels and goes, the atmospheric pressure in the chamber 103 that holds increases, and sealing member 5 removes in to first cavity 1032, and the gas in the first cavity 1032 is discharged by the gas vent, and sealing member 5 all separates with the opening and the gas guide hole 301 of collector tube 4, makes in fuel steam can get into collector tube 4 through opening and gas guide hole 301 fast to get into in the charcoal jar through outlet duct 3. When the vehicle normally traveled, it is less to hold the atmospheric pressure in the chamber 103, and sealing member 5 can the closing cap collector tube 4 the opening, nevertheless with the separation of air guide hole 301, and fuel steam can avoid in a large amount of entering charcoal jar, reduces the load of charcoal jar in entering into outlet duct 3 through air guide hole 301. When the engine carries out the fuel steam desorption, hold and produce the negative pressure in the chamber 103, sealing member 5 removes to second chamber 1031, and opening and air guide hole 301 of closing cap collecting liquid pipe 4 can make fuel steam can't get into in the charcoal jar through outlet duct 3 simultaneously, guarantee that the desorption in-process thoroughly clears up the charcoal jar.
The utility model provides a fuel tank steam control valve, compared with the prior art, the utility model discloses fuel tank steam control valve can avoid in fuel tank normal during operation fuel steam gets into the charcoal jar in a large number according to the atmospheric pressure size automatically regulated sealing member 5 state that holds in the chamber 103, can reduce the load of charcoal jar, can guarantee simultaneously that a large amount of fuel steam that the vehicle produced when refueling and go can be adsorbed by the charcoal jar. Liquid collecting pipe 4 can collect liquefied fuel steam with holding chamber 103, avoids liquid fuel to cause the charcoal jar to block up in getting into the charcoal jar to influence the adsorption efficiency of charcoal jar. The utility model discloses simple structure has reduced inside overall arrangement, has reduced manufacturing cost.
Specifically, the air inlet is connected with the fuel tank through an air inlet pipe 2, and the air pipe mounting opening is connected with the carbon canister through an air outlet pipe 3.
Alternatively, the seal 5 is a rubber member.
Optionally, the elastic return member 6 is a spring.
In some embodiments, referring to fig. 4 to 5, the sealing member 5 is provided with a relief groove 502 which is inserted into the top end of the header pipe 4.
When the carbon canister needs to be cleaned, the liquid collecting pipe 4 is inserted into the abdicating groove 502, the surface of the sealing element 5 shields the air guide hole 301, and fuel steam is prevented from entering the air outlet pipe 3. When the vehicle normally runs, the liquid collecting pipe 4 is partially inserted into the abdicating groove 502, the surface of the sealing element 5 is not contacted with the air guide hole 301, so that fuel steam can enter the air outlet pipe 3 from the air guide hole 301 and then enter the carbon canister from the air outlet pipe 3, and the carbon canister is prevented from being overloaded after a large amount of fuel steam enters the carbon canister due to the small air guide hole 301. When the vehicle is refueled and is driven, the opening and the air guide hole 301 cannot be shielded by the surfaces of the abdicating groove 502 and the sealing element 5, so that a large amount of fuel steam generated in the refueling driving state can quickly enter the air outlet pipe 3 and then is discharged into the carbon tank.
In some embodiments, referring to fig. 6 to 8, the sealing element 5 is further provided with a sealing block 501 capable of being inserted into and matched with the air vent 301, and the sealing block 501 forms an air vent cover region.
The sealing block 501 can be inserted into the air guide hole 301, so that the sealing effect on the air guide hole 301 is improved, and the cleaning effect of the carbon canister caused by the fact that fuel steam enters the air guide hole 301 is avoided.
In some embodiments, referring to fig. 9 to 11, the sealing member 5 is provided with a first insertion block 503 inserted and matched with the opening and a second insertion block 504 inserted and matched with the air guide hole 301, and the height of the second insertion block 504 is greater than that of the first insertion block 503.
When the sealing element 5 can simultaneously cover the liquid collecting pipe 4 and the air guide holes 301, the first inserting block 503 and the second inserting block 504 are respectively inserted with the opening of the liquid collecting pipe 4 and the air guide holes 301, and the sealing effect on the opening and the air guide holes 301 is improved. When the sealing element 5 covers the liquid collecting pipe 4 and is separated from the air guide hole 301, the first insertion block 503 is inserted into the opening of the liquid collecting pipe 4, the second insertion block 504 is not inserted into the air guide hole 301, and fuel steam can enter the air outlet pipe 3 through the air guide hole 301. When the sealing element 5 is separated from the liquid collecting pipe 4 and the air guide hole 301 at the same time, the first insertion block 503 is disconnected from the liquid collecting pipe 4, the second insertion block 504 is disconnected from the air guide hole 301, and fuel steam can enter the air outlet pipe 3 through the opening and the air guide hole 301. And the plugging mode is adopted, so that the sealing element 5 has good sealing property when the carbon tank is cleaned and normally driven.
Alternatively, the first insert block 503, the second insert block 504 and the seal 5 may be an integral member.
In some embodiments, referring to fig. 1 to 3, the housing 1 includes a main body 101 and a sealing cover 102 covering the top of the main body 101, wherein the sealing cover 102 is detachably connected to the main body 101.
The main part 101 can be dismantled with sealed lid 102 and be connected, when elasticity piece 6 or sealing member 5 that resets takes place to damage, can open sealed lid 102 and change or maintain, avoids whole this device of change, the cost is reduced.
In some embodiments, not shown, body 101 is threadably coupled to seal cap 102.
Threaded connection processing is convenient, has reduced the processing cost, has improved the installation effectiveness simultaneously, makes things convenient for dismouting main part 101 and sealed lid 102. The threaded connection can improve the stability of the connection between the sealing cap 102 and the main body 101, and avoid connection failure caused by the change of the air pressure in the first chamber 1032.
Optionally, the side wall of the sealing cover 102 is provided with external threads, the inner wall of the main body 101 is provided with internal threads, and the sealing cover 102 is embedded in the main body 101.
In some embodiments, referring to fig. 1-3, the exhaust port is connected to the regulating tube 7.
The adjusting pipe 7 can guide the gas exhausted from the first chamber 1032, and the gas accumulation is prevented from influencing the normal running of the vehicle.
In some embodiments, referring to fig. 12, a telescopic guiding cylinder 8 is disposed on the housing 1, two ends of the guiding cylinder 8 are respectively abutted against the housing 1 and the sealing member 5, and the elastic restoring member 6 is disposed in the guiding cylinder 8.
When elasticity resets 6 flexible, guide cylinder 8 can lead elasticity piece 6 that resets, avoids elasticity piece 6 that resets to take place to remove, has improved the sealed effect of sealing member 5.
Optionally, the guide cylinder 8 is a telescopic tube.
In some embodiments, referring to fig. 12, the guiding cylinder 8 is a bellows.
The self quality of bellows is lighter, can not cause the burden to sealing member 5, can reset simultaneously along with elasticity and stretch out and draw back 6, resets to elasticity and carries out spacing direction at the axial 6, avoids elasticity to reset 6 emergence squints.
In some embodiments, referring to fig. 1 to 3, the housing 1 is a cylindrical member, the liquid collecting tube 4 is coaxially disposed with the housing 1, and the air inlet and the air tube mounting port are respectively located at two opposite sides of the housing 1 to form an annular flow channel.
The cylindrical structure can make the holding cavity 103 evenly stressed, and the service life of the shell 1 is prolonged. The liquid collecting pipe 4 and the shell 1 are coaxially arranged, so that fuel steam enters the containing cavity 103 from the air inlet, enters the liquid collecting pipe 4 from the outside of the liquid collecting pipe 4, the annular flow channel conforms to the aerodynamic principle more, and the whole design is more reasonable.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. Fuel tank vapor control valve, characterized by comprising:
the air pipe device comprises a shell, a valve body and a valve body, wherein a containing cavity is arranged in the shell, and an air inlet, an air pipe mounting port and an air outlet are formed in the shell;
the sealing element is positioned in the accommodating cavity and is in sliding sealing fit with the side wall of the accommodating cavity along the vertical direction, the accommodating cavity is divided into a first cavity and a second cavity below the first cavity by the sealing element, and the exhaust port is positioned at the top of the shell and is communicated with the first cavity;
the liquid collecting pipe is arranged in the second chamber, the bottom of the liquid collecting pipe is hermetically connected with the second chamber, the top of the liquid collecting pipe is provided with an opening, and an air outlet is formed in the side wall of the liquid collecting pipe;
the gas outlet pipe penetrates through the gas pipe mounting opening and is communicated with the gas outlet, a gas guide hole communicated with the second chamber is formed in the part, located in the second chamber, of the gas outlet pipe, a gas hole sealing cover area corresponding to the gas guide hole is formed in the sealing element, and the top end of the gas outlet pipe is not higher than the top end of the liquid collecting pipe; and
elasticity resets, locates in the first chamber, and with the sealing member is connected, elasticity resets and is configured with and makes the sealing member laminating closing cap in open-ended pretightning force.
2. A fuel tank vapor control valve as set forth in claim 1 wherein said seal member is provided with a relief groove for engagement with the top end of said header tube.
3. A fuel tank vapor control valve as set forth in claim 2 wherein said seal member is further provided with a seal block capable of mating with said vent hole, said seal block defining said vent cover region.
4. The fuel tank vapor control valve of claim 1, wherein said seal member is provided with a first insert which is fitted in said opening and a second insert which is fitted in said vent hole, said second insert having a height greater than that of said first insert.
5. A fuel tank vapor control valve as set forth in claim 1 wherein said housing includes a main body and a seal cover disposed atop said main body, said seal cover being removably connected to said main body.
6. A fuel tank vapor control valve as set forth in claim 5 wherein said body is threadably connected to said seal cap.
7. A fuel tank vapor control valve as set forth in claim 1 wherein said vent port is connected to a regulator tube.
8. The fuel tank vapor control valve of claim 1, wherein a telescoping guide cylinder is provided on said housing, both ends of said guide cylinder are respectively abutted against said housing and said sealing member, and said elastic return member is provided in said guide cylinder.
9. The fuel tank vapor control valve of claim 8 wherein said guide tube is a bellows.
10. A fuel tank vapor control valve as set forth in claim 1 wherein said housing is a cylindrical member, said liquid collection tube is disposed coaxially with said housing, and said air inlet and said air tube mounting port are disposed on opposite sides of said housing, respectively, to form an annular flow passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121135541.7U CN215110743U (en) | 2021-05-25 | 2021-05-25 | Fuel tank steam control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121135541.7U CN215110743U (en) | 2021-05-25 | 2021-05-25 | Fuel tank steam control valve |
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| Publication Number | Publication Date |
|---|---|
| CN215110743U true CN215110743U (en) | 2021-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121135541.7U Active CN215110743U (en) | 2021-05-25 | 2021-05-25 | Fuel tank steam control valve |
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| CN (1) | CN215110743U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114668096A (en) * | 2022-04-22 | 2022-06-28 | 八鲜康品(深圳)食品机械科技有限公司 | Plasma low-pressure high-temperature steam food preservation equipment |
-
2021
- 2021-05-25 CN CN202121135541.7U patent/CN215110743U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114668096A (en) * | 2022-04-22 | 2022-06-28 | 八鲜康品(深圳)食品机械科技有限公司 | Plasma low-pressure high-temperature steam food preservation equipment |
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