CN203477498U - Overflow stop valve - Google Patents
Overflow stop valve Download PDFInfo
- Publication number
- CN203477498U CN203477498U CN201320589185.5U CN201320589185U CN203477498U CN 203477498 U CN203477498 U CN 203477498U CN 201320589185 U CN201320589185 U CN 201320589185U CN 203477498 U CN203477498 U CN 203477498U
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- annular
- valve
- plastics
- fuel tank
- pressurize
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- Withdrawn - After Issue
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Abstract
The utility model discloses an overflow stop valve. When a fuel tank topples over, a floating valve element is in an inclined state, due to the fact that the lower portion of the floating valve element is heavier than the upper portion of the floating valve element, the floating valve element will be slightly dislocated relative to an inner cavity of a valve casing, the floating valve element and a sealing body are not fixedly connected, a supporting column on the floating valve element provides a fulcrum for the sealing body, and then the sealing body can swing along the fulcrum. When the fuel tank topples over, reset springs overcome resolution of gravity of the floating valve element and push the floating valve element forwards, a sealing assembly abuts against the lower end face of a vent hole, large air pressure in the fuel tank acts on the inner side of the sealing assembly, the sealing assembly swings, and the sealing surface of the sealing body is tightly attached to the vent hole. Compared with a traditional rubber valve with a fixed floating valve element, the angle of the sealing body on the floating valve element can be automatically adjusted under the effect of internal air pressure, the vent hole is sealed, and fuel leakage generated when the fuel tank topples over is further reduced.
Description
Technical field
The utility model relates to a kind of valve body, especially relates to a kind of overflow cutting valve.
Background technique
Overflow cutting valve is installed in vehicle fuel tank conventionally, there is following effect: 1) during vehicle fuel tank oiling, by overflow cutting valve, make vehicle fuel tank and atmosphere have certain passage; And fill with after fuel oil when vehicle fuel tank, overflow cutting valve can be closed automatically, prevents that fuel oil from overflowing from overflow cutting valve.2) last importantly when the position of fuel tank changes suddenly (as vehicle overturning), overflow cutting valve can stop fuel oil to flow out, the name that the patent No. of announcing as authorized on September 14th, 2011 is 201120078737.7 is called " a kind of overflow cutting valve ", it discloses valve casing upper end and has been provided with inlet hole, the floating core of valve that in valve casing, setting can fluctuate in valve casing, on the floating core of valve, be provided with fixing button, rubber valve is installed on fixing button, rubber valve is close to the upper surface of the floating core of valve, between the floating core of valve and valve bottom, is provided with spring.
During in the normal oiling of fuel tank or by oily process, the floating core of valve falls back to valve bottom, and spring, in compressive state, forms air-flow path in valve body, make fuel tank keep normal air pressure.When in fuel tank, fuel oil is filled it up with, the floating core of valve is at the floating function float downward of fuel oil, and rubber valve is blocked the lower end of inlet hole, can prevent that fuel oil is from inlet hole to outflow.
There are the following problems for the outlet passageway that enters of this structure: when fuel tank is toppled over, the floating core of valve is in heeling condition, because weight ratio top, the bottom weight of the floating core of valve wants large, make the floating core of valve have dislocation slightly with respect to valve shell cavity, and rubber valve is attached on the floating wicking surface of valve, therefore also can there is certain inclination or dislocation with respect to inlet hole is inevitable in rubber valve, cause its can not with inlet hole between mate completely, between rubber valve and inlet hole, just having some not complete hermetic situations produces, rubber valve cannot all be blocked inlet hole, this can cause a small amount of fuel leakage.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of when the floating core of valve exists dislocation in inclination and with cavity of resorption, seal on the floating core of valve can be adjusted voluntarily angle and seal vent under the effect of air pressure inside, reaches the overflow cutting valve of excellent sealing effect.
The utility model solves the problems of the technologies described above adopted technological scheme: a kind of overflow cutting valve, comprise valve body and valve gap, described valve body comprises housing, the floating core assembly of valve and pressurize assembly, in described housing, be provided with partitioning wall housing is separated into epicoele and cavity of resorption, on described partitioning wall, be provided with vent, described pressurize assembly is arranged in epicoele, the floating core assembly of described valve is arranged in cavity of resorption, the floating core assembly of described valve comprises the floating core of valve and black box, between the floating core of described housing bottom and valve, there is Returnning spring, the floating core of described valve can move in the cavity of resorption of housing, described black box and vent cooperatively interact,
The upper end of the floating core of valve is provided with the annular chamber of indent, the centre of described annular chamber is provided with the sharp-pointed supporting post in top, described black box is positioned at described annular chamber, described black box is a solid of rotation, described black box comprises the seal matching with vent and is positioned at the annular solid of seal lower edge, the central position, the back side of described seal is provided with conical bore, on described annular chamber wall, be provided with the stop part extending to annular chamber center, the sharp-pointed top of described supporting post withstands on described conical bore bottom
Described annular solid is positioned at the below of stop part, the described black box portion of being blocked is controlled in annular chamber, and described annular solid can be made rocking action in the following space of stop part, at the floating core of valve, when tilting and misplacing with cavity of resorption, described seal can be adjusted voluntarily angle and seal described vent under the effect of air pressure inside.Annular solid and stop part cooperatively interact, and the one, prevent that black box from escaping in annular chamber, two can make seal freely rotate on fulcrum, and object is can coordinate with vent under air pressure inside effect, plays good sealing effect.
Described seal comprises having the lid of cavity and be arranged on the supporting portion in lid inner chamber, and described lid and annular solid are one-body molded by stainless steel material, and described lid coordinates with described vent, and described conical bore is arranged on described supporting portion.Adopt stainless steel material can extend the working life of Sealing.
Between described stop part and described annular solid, there is a segment distance, between described annular solid and the bottom of annular chamber, there is a segment distance.In order to give the space that provides certain of waving of annular solid, make to seal freely swinging rotary of physical efficiency.
The leading portion of supporting post is cone, and the shaft section drift angle angle of described cone is less than the shaft section drift angle angle of conical bore.Supporting post provides a fulcrum at the center of gravity place of black box, and the setting of this fulcrum can allow black box freely wave.
The lower end surface of described vent is horizontal, and the upper-end surface of described lid is horizontal, and the lower end surface of described vent can be close in the upper-end surface of described lid.Under the effect of air pressure inside, lid can be adjacent to vent.
Described stop part is comprised of a plurality of juts that are evenly distributed in annular chamber wall surrounding, and the exterior contour of described jut is arc surface.Exterior contour is arc surface, can prevent that annular solid from being blocked by jut when waving.
Described pressurize assembly comprises cylinder-shaped pressurize working of plastics, rubber assembly, capping and the second Returnning spring, and described capping is fixed on described housing,
The lower end of described pressurize working of plastics is opened wide, and described vent communicates with pressurize working of plastics inner chamber,
The upper end of pressurize working of plastics is provided with base, the lower end arranged outside of described pressurize working of plastics has annular position, on the upper base of pressurize working of plastics, be provided with a plurality of gas-entered passageways that communicate with pressurize working of plastics inner chamber, described rubber assembly is arranged on the upper base of pressurize working of plastics, described rubber assembly covers described gas-entered passageway, described below, annular position is provided with annular convex rib, described annular convex rib is seated the upper-end surface of partitioning wall, on described annular convex rib, is provided with air outlet hole;
The second Returnning spring is enclosed within outside the stack shell of pressurize working of plastics, and the second Returnning spring is between capping and annular position;
In fuel tank normal barometric pressure situation, fuel tank internal gas exchanges by air outlet hole and extraneous gas; When fuel tank internal exists in the situation of larger negative air pressure, extraneous gas is washed rubber assembly open and is made gas-entered passageway and the conducting of pressurize working of plastics inner chamber, and extraneous gas enters in fuel tank by gas-entered passageway; When fuel tank internal exists in more atmospheric situation, pressurize working of plastics is washed from partitioning wall by air pressure inside, and the second Returnning spring is in compressive state.
In fuel tank normal barometric pressure situation, fuel tank internal gas exchanges by air outlet hole and extraneous gas; When fuel tank internal exists in the situation of larger negative air pressure, extraneous gas is washed rubber assembly open and is made gas-entered passageway and the conducting of pressurize working of plastics inner chamber, and extraneous gas enters in fuel tank by gas-entered passageway.Outlet passageway in the utility model and gas-entered passageway separately, are independent of each other between two passages, can design respectively the size of outlet passageway and gas-entered passageway, can be suitable for the fuel tank of different capacity size vehicle.The oil tank of vehicle of different volumes is smaller on the air outlet hole impact on annular convex rib, because fuel tank is added to speed oil, not too can change because of fuel tank Volume Changes.Intake velocity when gas-entered passageway and rubber assembly joint effect negative pressure, can omit inching as required, to meet the fuel tank of different volumes
Described rubber assembly comprises umbrella portion and fixing column, the center, upper base of described pressurize working of plastics is provided with through hole, described fixing column passes and is fixed in through hole, and described umbrella portion is positioned at the inner side on base, and described umbrella portion covers described gas-entered passageway.The sheet rubber of umbrella-shaped structure, while there is not negative air pressure in fuel tank, the sheet rubber of umbrella-shaped structure can cover gas-entered passageway; While there is larger negative air pressure in fuel tank, the sheet rubber of umbrella-shaped structure is washed open by external pressure, and external pressure enters in fuel tank by gas-entered passageway.
The rear end of described fixing column is provided with lug boss, and the diameter of described lug boss is greater than the diameter of through hole, and described boss is in the top of through hole.Facilitate assembling and the replacing of rubber assembly.
Described housing middle part is provided with air inlet/outlet, and described partitioning wall below is provided with annular rib, between described annular rib and described housing, forms annular groove, and described air inlet/outlet is facing to described annular groove.Increase the lowest part of annular rib and annular rib lower than the position of air inlet/outlet, fuel tank, when rocking, can prevent that fuel oil from outwards overflowing from vent, thus fuel oil spill-out when control and minimizing fuel oil rock.
Compared with prior art, the utility model has the advantages that when fuel tank is toppled over, the floating core of valve is in heeling condition, because weight ratio top, the bottom weight of the floating core of valve wants large, the floating core of valve has dislocation slightly with respect to valve shell cavity, between the floating core of valve and seal, be not to be fixedly connected with, but supporting post on the floating core of valve provides a fulcrum for seal, seal can swing along this fulcrum, when fuel tank is toppled over, Returnning spring overcomes the decomposing force of the gravity of the floating core of valve, and by the floating core of valve, toward sinciput, black box leans against the lower end surface of vent; Gas pressure larger in fuel tank, in black box inner side, swings black box, and sealing surface and vent on seal fit tightly.Compare with the rubber valve that traditional floating core of valve is fixing, the seal on the floating core of valve can be adjusted voluntarily angle and seal vent under the effect of air pressure inside, thereby the fuel oil further reducing when fuel tank tilt state is revealed.
Accompanying drawing explanation
Fig. 1 is exploded view of the present utility model (one);
Fig. 2 is exploded view of the present utility model (two);
Fig. 3 is sectional view of the present utility model (one);
Fig. 4 is sectional view of the present utility model (two);
Fig. 5 is the stereogram of the floating core assembly of valve of the present utility model;
Fig. 6 is the exploded view of Fig. 5;
Fig. 7 is the structural drawing of pressurize working of plastics;
Fig. 8 is sectional view of the present utility model (three);
Fig. 9 is the stereogram of valve body of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.
A kind of overflow cutting valve, comprise valve body 1 and valve gap 2, valve body 1 comprises housing 3, the floating core assembly 4 of valve and pressurize assembly 5, in housing 3, be provided with partitioning wall 6 housing 3 is separated into epicoele and cavity of resorption, on partitioning wall 6, be provided with vent 7, pressurize assembly 5 is arranged in epicoele, the floating core assembly 4 of valve is arranged in cavity of resorption, the floating core assembly 4 of valve comprises the floating core 8 of valve and black box 9, between the floating core 8 of housing 3 bottoms and valve, there is the first Returnning spring 10, the floating core 8 of valve can move in the cavity of resorption of housing 3, and black box 9 cooperatively interacts with vent 7
The upper end of the floating core 8 of valve is provided with the annular chamber 11 of indent, the centre of annular chamber 11 is provided with the sharp-pointed supporting post in top 12, black box 9 is positioned at annular chamber 11, black box 9 is a solid of rotation, black box 9 comprises the seal 13 matching with vent 7 and the annular solid 14 that is positioned at seal 13 lower edges, the central position, the back side of seal 13 is provided with conical bore 15, on annular chamber 11 walls, be provided with the stop part extending to annular chamber 11 centers, the sharp-pointed top of supporting post 12 withstands on conical bore 15 bottoms
Between stop part and annular solid 14, there is a segment distance, between annular solid 14 and the bottom of annular chamber 11, there is a segment distance.
The leading portion of supporting post 14 is cone 18, and the shaft section drift angle angle of cone 18 is less than the shaft section drift angle angle of conical bore 15.
The lower end surface of vent 7 is horizontal, and the upper-end surface of lid 16 is horizontal, and the lower end surface of vent 7 can be close in the upper-end surface of lid 16.
Stop part is comprised of a plurality of juts 19 that are evenly distributed in annular chamber 11 wall surroundings, and the exterior contour of jut 19 is arc surface.
The lower end of pressurize working of plastics 20 is opened wide, and vent 7 communicates with pressurize working of plastics 20 inner chambers,
The upper end of pressurize working of plastics 20 is provided with base 24, the lower end arranged outside of pressurize working of plastics 20 has annular position 25, on the upper base 24 of pressurize working of plastics 20, be provided with a plurality of gas-entered passageways 26 that communicate with pressurize working of plastics 20 inner chambers, rubber assembly 21 is arranged on the upper base 24 of pressurize working of plastics 20, rubber assembly 21 covers gas-entered passageway 26,25 belows, annular position are provided with annular convex rib 27, annular convex rib 27 is seated the upper-end surface of partitioning wall 6, is provided with air outlet hole 28 on annular convex rib 27;
The second Returnning spring 23 is enclosed within outside the stack shell of pressurize working of plastics 20, and the second Returnning spring 23 is between capping 22 and annular position 25;
In fuel tank normal barometric pressure situation, fuel tank internal gas exchanges by air outlet hole 28 and extraneous gas; When fuel tank internal exists in the situation of larger negative air pressure, extraneous gas is washed rubber assembly 21 open and is made gas-entered passageway 26 and the 20 inner chamber conductings of pressurize working of plastics, and extraneous gas enters in fuel tank by gas-entered passageway 26; When fuel tank internal exists in more atmospheric situation, pressurize working of plastics 20 is washed from partitioning wall 6, the second Returnning springs 23 in compressive state by air pressure inside.
Rubber assembly 21 comprises umbrella portion 29 and fixing column 30, and 24 centers, upper base of pressurize working of plastics 20 are provided with through hole, and fixing column 30 passes and is fixed in through hole, and umbrella portion 29 is positioned at the inner side on base 24, and umbrella portion 29 covers gas-entered passageway 26.
The rear end of fixing column 30 is provided with lug boss 32, and the diameter of lug boss 32 is greater than the diameter of through hole, and lug boss 32 is positioned at the top of through hole.
Claims (10)
1. an overflow cutting valve, comprise valve body and valve gap, described valve body comprises housing, the floating core assembly of valve and pressurize assembly, in described housing, be provided with partitioning wall housing is separated into epicoele and cavity of resorption, on described partitioning wall, be provided with vent, described pressurize assembly is arranged in epicoele, the floating core assembly of described valve is arranged in cavity of resorption, the floating core assembly of described valve comprises the floating core of valve and black box, between the floating core of described housing bottom and valve, there is the first Returnning spring, the floating core of described valve can move in the cavity of resorption of housing, described black box and vent cooperatively interact,
It is characterized in that the upper end of the floating core of valve is provided with the annular chamber of indent, the centre of described annular chamber is provided with the sharp-pointed supporting post in top, described black box is positioned at described annular chamber, described black box is a solid of rotation, described black box comprises the seal matching with vent and is positioned at the annular solid of seal lower edge, the central position, the back side of described seal is provided with conical bore, on described annular chamber wall, be provided with the stop part extending to annular chamber center, the sharp-pointed top of described supporting post withstands on described conical bore bottom
Described annular solid is positioned at the below of stop part, and the described black box portion of being blocked is controlled in annular chamber, and described annular solid can be made rocking action in the following space of stop part.
2. a kind of overflow cutting valve according to claim 1, it is characterized in that described seal comprises having the lid of cavity and be arranged on the supporting portion in lid inner chamber, described lid and annular solid are one-body molded by stainless steel material, described lid coordinates with described vent, and described conical bore is arranged on described supporting portion.
3. a kind of overflow cutting valve according to claim 1, has a segment distance between the stop part described in it is characterized in that and described annular solid, between described annular solid and the bottom of annular chamber, has a segment distance.
4. a kind of overflow cutting valve according to claim 1, the leading portion that it is characterized in that supporting post is cone, the shaft section drift angle angle of described cone is less than the shaft section drift angle angle of conical bore.
5. a kind of overflow cutting valve according to claim 2, is characterized in that the lower end surface of described vent is horizontal, and the upper-end surface of described lid is horizontal, and the lower end surface of described vent can be close in the upper-end surface of described lid.
6. a kind of overflow cutting valve according to claim 1, is characterized in that described stop part is comprised of a plurality of juts that are evenly distributed in annular chamber wall surrounding, and the exterior contour of described jut is arc surface.
7. a kind of overflow cutting valve according to claim 1, is characterized in that described pressurize assembly comprises cylinder-shaped pressurize working of plastics, rubber assembly, capping and the second Returnning spring, and described capping is fixed on described housing,
The lower end of described pressurize working of plastics is opened wide, and described vent communicates with pressurize working of plastics inner chamber,
The upper end of pressurize working of plastics is provided with base, the lower end arranged outside of described pressurize working of plastics has annular position, on the upper base of pressurize working of plastics, be provided with a plurality of gas-entered passageways that communicate with pressurize working of plastics inner chamber, described rubber assembly is arranged on the upper base of pressurize working of plastics, described rubber assembly covers described gas-entered passageway, described below, annular position is provided with annular convex rib, described annular convex rib is seated the upper-end surface of partitioning wall, on described annular convex rib, is provided with air outlet hole;
The second Returnning spring is enclosed within outside the stack shell of pressurize working of plastics, and the second Returnning spring is between capping and annular position;
In fuel tank normal barometric pressure situation, fuel tank internal gas exchanges by air outlet hole and extraneous gas; When fuel tank internal exists in the situation of larger negative air pressure, extraneous gas is washed rubber assembly open and is made gas-entered passageway and the conducting of pressurize working of plastics inner chamber, and extraneous gas enters in fuel tank by gas-entered passageway; When fuel tank internal exists in more atmospheric situation, pressurize working of plastics is washed from partitioning wall by air pressure inside, and the second Returnning spring is in compressive state.
8. a kind of overflow cutting valve according to claim 7, it is characterized in that described rubber assembly comprises umbrella portion and fixing column, the center, upper base of described pressurize working of plastics is provided with through hole, described fixing column passes and is fixed in through hole, described umbrella portion is positioned at the inner side on base, and described umbrella portion covers described gas-entered passageway.
9. a kind of overflow cutting valve according to claim 8, is characterized in that the rear end of described fixing column is provided with lug boss, and the diameter of described lug boss is greater than the diameter of through hole, and described boss is in the top of through hole.
10. a kind of overflow cutting valve according to claim 7, it is characterized in that described housing middle part is provided with air inlet/outlet, described partitioning wall below is provided with annular rib, between described annular rib and described housing, form annular groove, described air inlet/outlet is facing to described annular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320589185.5U CN203477498U (en) | 2013-09-23 | 2013-09-23 | Overflow stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320589185.5U CN203477498U (en) | 2013-09-23 | 2013-09-23 | Overflow stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203477498U true CN203477498U (en) | 2014-03-12 |
Family
ID=50225829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320589185.5U Withdrawn - After Issue CN203477498U (en) | 2013-09-23 | 2013-09-23 | Overflow stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203477498U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470832A (en) * | 2013-09-23 | 2013-12-25 | 孙达立 | Overflow cut-off valve |
| CN111846256A (en) * | 2020-07-29 | 2020-10-30 | 贵州航天精工制造有限公司 | Reverse-flying valve structure of flexible oil tank and installation method |
| CN114636026A (en) * | 2022-03-24 | 2022-06-17 | 淮安友邦液压机械有限公司 | Hydraulic oil pipe sealing device and method convenient to control |
-
2013
- 2013-09-23 CN CN201320589185.5U patent/CN203477498U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470832A (en) * | 2013-09-23 | 2013-12-25 | 孙达立 | Overflow cut-off valve |
| CN103470832B (en) * | 2013-09-23 | 2015-10-14 | 孙达立 | A kind of overflow cutting valve |
| CN111846256A (en) * | 2020-07-29 | 2020-10-30 | 贵州航天精工制造有限公司 | Reverse-flying valve structure of flexible oil tank and installation method |
| CN111846256B (en) * | 2020-07-29 | 2022-08-30 | 贵州航天精工制造有限公司 | Reverse-flying valve structure of flexible oil tank and installation method |
| CN114636026A (en) * | 2022-03-24 | 2022-06-17 | 淮安友邦液压机械有限公司 | Hydraulic oil pipe sealing device and method convenient to control |
| CN114636026B (en) * | 2022-03-24 | 2023-01-24 | 淮安友邦液压机械有限公司 | Hydraulic oil pipe sealing device and method convenient to control |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140312 Effective date of abandoning: 20151014 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140312 Effective date of abandoning: 20151014 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |