CN103470832B - A kind of overflow cutting valve - Google Patents
A kind of overflow cutting valve Download PDFInfo
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- CN103470832B CN103470832B CN201310438429.4A CN201310438429A CN103470832B CN 103470832 B CN103470832 B CN 103470832B CN 201310438429 A CN201310438429 A CN 201310438429A CN 103470832 B CN103470832 B CN 103470832B
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- plastics
- fuel tank
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Abstract
The invention discloses a kind of overflow cutting valve, when fuel tank is toppled over, valve floats core and is in heeling condition, the bottom weight ratio top weight floating core due to valve wants large, valve floats core and has relative to valve shell cavity and slightly misplace, it is not be fixedly connected with that valve floats between core with seal, but the valve supporting post floated on core is seal provides a fulcrum, seal can swing along this fulcrum, when fuel tank is toppled over, Returnning spring overcomes the decomposing force that valve floats the gravity of core, and valve is floated core toward sinciput, black box leans against the lower end surface of vent; Gas pressure larger in fuel tank, inside black box, makes black box swing, and the sealing surface on seal and vent fit tightly.Compared with floating the fixing rubber valve of core with traditional valve, valve floats the seal on core can seal vent from Row sum-equal matrix angle under the effect of air pressure inside, thus the fuel oil reduced further when fuel tank tilt state reveals.
Description
Technical field
The present invention relates to a kind of valve body, especially relate to a kind of overflow cutting valve.
Background technique
Vehicle fuel tank is provided with overflow cutting valve usually, there is following effect: 1) during vehicle fuel tank oiling, make vehicle fuel tank and air have certain passage by overflow cutting valve; And after vehicle fuel tank fills fuel oil, overflow cutting valve can be closed automatically, prevent fuel oil from overflowing from overflow cutting valve.2) last importantly when the position of fuel tank changes suddenly (as vehicle rollover), overflow cutting valve can stop fuel oil to flow out, as on September 14th, 2011 authorize announce the patent No. be 201120078737.7 name be called " a kind of overflow cutting valve ", it discloses valve casing upper end and be provided with inlet hole, the valve that can fluctuate in valve casing is set in valve casing and floats core, valve floats on core and is provided with fixing button, fixing button is provided with rubber valve, rubber valve is close to the upper surface that valve floats core, and valve floats between core and valve bottom and is provided with spring.
During in the normal oiling of fuel tank or by oily process, valve floats core and falls back to valve bottom, and spring is in compressive state, forms air-flow path, make fuel tank keep normal air pressure in valve body.When in fuel tank, fuel oil is filled it up with, valve floats the floating function float downward of core at fuel oil, and the lower end of inlet hole is blocked by rubber valve, and fuel oil can be prevented 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, valve floats core and is in heeling condition, the bottom weight ratio top weight floating core due to valve wants large, make valve float core to have relative to valve shell cavity and slightly misplace, and rubber valve is attached to valve floats on wicking surface, therefore rubber valve is inevitable relative to inlet hole also can exist certain inclination or dislocation, cause it can not mate completely with between inlet hole, just have some not complete hermetic situations between rubber valve and inlet hole to produce, inlet hole cannot all be blocked by rubber valve, this can cause a small amount of fuel leakage.
Summary of the invention
Technical problem to be solved by this invention be to provide a kind of valve float core be in and with cavity of resorption exist misplace time, valve floats the seal on core can seal vent from Row sum-equal matrix angle under the effect of air pressure inside, reaches the overflow cutting valve of excellent sealing effect.
The present invention 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, valve floats core assembly and pressurize assembly, be provided with partitioning wall in described housing and housing is separated into epicoele and cavity of resorption, described partitioning wall is provided with vent, described pressurize assembly is arranged in epicoele, described valve floats core assembly and is arranged in cavity of resorption, described valve floats core assembly and comprises valve and float core and black box, described housing bottom and valve float between core Returnning spring, described valve floats core and can move in the cavity of resorption of housing, described black box and vent cooperatively interact,
The upper end that valve floats core 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 matched with vent and the annular solid being positioned at seal lower edge, the central position, the back side of described seal is provided with conical bore, described annular chamber wall is provided with the stop part extended to annular chamber center, the sharp top of described supporting post withstands on bottom described conical bore
Described annular solid is positioned at the below of stop part, described black box is controlled in annular chamber by stop part, and described annular solid can make rocking action in space below stop part, valve float core be in and misplace with cavity of resorption time, described seal can seal described vent from Row sum-equal matrix angle under the effect of air pressure inside.Annular solid and stop part cooperatively interact, and one is prevent black box from escaping in annular chamber, and two can make seal freely rotate on fulcrum, and object can coordinate with vent under air pressure inside effect, plays good sealing effect.
Described seal comprises the lid with cavity and is arranged on the supporting portion in lid inner chamber, described lid and annular solid one-body molded by stainless steel material, 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.
There is between described stop part and described annular solid a segment distance, there is between described annular solid and the bottom of annular chamber a segment distance.In order to provide certain space to waving of annular solid, make sealing physical efficiency freely swinging rotary.
The leading portion of supporting post is cone, and the shaft section corner angle of described cone is less than the shaft section corner 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.
Multiple juts that described stop part is distributed in annular chamber wall surrounding by uniform intervals form, and the exterior contour of described jut is arc surface.Exterior contour is arc surface, can prevent 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 open at its lower end of described pressurize working of plastics, 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 outside of described pressurize working of plastics is provided with annular position, the upper base of pressurize working of plastics is provided with multiple gas-entered passageway communicated with pressurize working of plastics inner chamber, described rubber assembly is arranged on the upper base of pressurize working of plastics, described gas-entered passageway covers by described rubber assembly, annular convex rib is provided with below described annular position, described annular convex rib is seated the upper-end surface of partitioning wall, and described annular convex rib is provided with air outlet hole;
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;
When in fuel tank normal barometric pressure situation, fuel tank internal gas is exchanged by air outlet hole and extraneous gas; When fuel tank internal exists 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; Under fuel tank internal exists 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.
When in fuel tank normal barometric pressure situation, fuel tank internal gas is exchanged by air outlet hole and extraneous gas; When fuel tank internal exists 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 is entered in fuel tank by gas-entered passageway.Outlet passageway in the present invention and gas-entered passageway separately, are independent of each other between two passages, can design the size of outlet passageway and gas-entered passageway respectively, 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, not too can change because of fuel tank Volume Changes because add speed oil to fuel tank.Intake velocity when gas-entered passageway and rubber assembly joint effect negative pressure, can adjust as required slightly, 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 gas-entered passageway covers by described umbrella portion.The sheet rubber of umbrella-shaped structure, when there is not negative air pressure in fuel tank, the sheet rubber of umbrella-shaped structure can cover gas-entered passageway; When 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 is entered 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 central section is provided with air inlet/outlet, is provided with annular rib below described partitioning wall, forms annular groove between described annular rib and described housing, and described air inlet/outlet is facing to described annular groove.Increase annular rib and the lowest part of annular rib lower than the position of air inlet/outlet, fuel tank, when rocking, can prevent fuel oil from outwards overflowing from vent, thus controls and reduce fuel oil spill-out when fuel oil rocks.
Compared with prior art, advantage of the present invention is when fuel tank is toppled over, valve floats core and is in heeling condition, the bottom weight ratio top weight floating core due to valve wants large, valve floats core and has relative to valve shell cavity and slightly misplace, it is not be fixedly connected with that valve floats between core with seal, but the valve supporting post floated on core is seal provides a fulcrum, seal can swing along this fulcrum, when fuel tank is toppled over, Returnning spring overcomes the decomposing force that valve floats the gravity of core, and valve is floated core toward sinciput, black box leans against the lower end surface of vent; Gas pressure larger in fuel tank, inside black box, makes black box swing, and the sealing surface on seal and vent fit tightly.Compared with floating the fixing rubber valve of core with traditional valve, valve floats the seal on core can seal vent from Row sum-equal matrix angle under the effect of air pressure inside, thus the fuel oil reduced further when fuel tank tilt state reveals.
Accompanying drawing explanation
Fig. 1 is exploded view of the present invention (one);
Fig. 2 is exploded view of the present invention (two);
Fig. 3 is sectional view of the present invention (one);
Fig. 4 is sectional view of the present invention (two);
Fig. 5 is the stereogram that valve of the present invention floats core assembly;
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 invention (three);
Fig. 9 is the stereogram of valve body of the present invention.
Embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the present invention.
A kind of overflow cutting valve, comprise valve body 1 and valve gap 2, valve body 1 comprises housing 3, valve floats core assembly 4 and pressurize assembly 5, be provided with partitioning wall 6 in housing 3 and housing 3 is separated into epicoele and cavity of resorption, partitioning wall 6 is provided with vent 7, pressurize assembly 5 is arranged in epicoele, valve floats core assembly 4 and is arranged in cavity of resorption, valve floats core assembly 4 and comprises valve and float core 8 and black box 9, bottom housing 3 and valve float between core 8 and have the first Returnning spring 10, valve floats core 8 and can move in the cavity of resorption of housing 3, and black box 9 and vent 7 cooperatively interact
The upper end that valve floats core 8 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 matched with vent 7 and the annular solid 14 being positioned at seal 13 lower edge, the central position, the back side of seal 13 is provided with conical bore 15, annular chamber 11 wall is provided with the stop part extended to annular chamber 11 center, the sharp top of supporting post 12 withstands on bottom conical bore 15
Annular solid 14 is positioned at the below of stop part, black box 9 is controlled in annular chamber 11 by stop part, and annular solid 14 can make rocking action in space below stop part, valve float core 8 be in and misplace with cavity of resorption time, seal 13 can seal vent 7 from Row sum-equal matrix angle under the effect of air pressure inside.
Seal 13 comprises the lid 16 with cavity and the supporting portion 17 be arranged in lid 16 inner chamber, lid 16 and annular solid 14 one-body molded by stainless steel material, lid 16 coordinates with vent 7, and conical bore 15 is arranged on supporting portion 17.
There is between stop part and annular solid 14 segment distance, there is between the bottom of annular solid 14 and annular chamber 11 segment distance.
The leading portion of supporting post 14 is cone 18, and the shaft section corner angle of cone 18 is less than the shaft section corner 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.
Multiple juts 19 that stop part is distributed in annular chamber 11 wall surrounding by uniform intervals form, and the exterior contour of jut 19 is arc surface.
Pressurize assembly 5 comprises cylinder-shaped pressurize working of plastics 20, rubber assembly 21, capping 22 and the second Returnning spring 23, and capping 22 is fixed on housing 3,
The open at its lower end of pressurize working of plastics 20, vent 7 communicates with pressurize working of plastics 20 inner chamber,
The upper end of pressurize working of plastics 20 is provided with base 24, the lower end outside of pressurize working of plastics 20 is provided with annular position 25, the upper base 24 of pressurize working of plastics 20 is provided with multiple gas-entered passageway 26 communicated with pressurize working of plastics 20 inner chamber, rubber assembly 21 is arranged on the upper base 24 of pressurize working of plastics 20, gas-entered passageway 26 covers by rubber assembly 21, annular is provided with annular convex rib 27 below position 25, annular convex rib 27 is seated the upper-end surface of partitioning wall 6, annular convex rib 27 is provided with air outlet hole 28;
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;
When in fuel tank normal barometric pressure situation, fuel tank internal gas is exchanged by air outlet hole 28 and extraneous gas; When fuel tank internal exists larger negative air pressure, extraneous gas is washed rubber assembly 21 open and is made gas-entered passageway 26 and the conducting of pressurize working of plastics 20 inner chamber, and extraneous gas enters in fuel tank by gas-entered passageway 26; Under fuel tank internal exists more atmospheric situation, pressurize working of plastics 20 is washed from partitioning wall 6 by air pressure inside, and the second Returnning spring 23 is in compressive state.
Rubber assembly 21 comprises umbrella portion 29 and fixing column 30, and the center, upper base 24 of pressurize working of plastics 20 is 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 gas-entered passageway 26 covers by umbrella portion 29.
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.
Be provided with air inlet/outlet 33 in the middle part of housing 3, be provided with annular rib 34 below partitioning wall 6, form annular groove 35 between annular rib 34 and housing 3, air inlet/outlet 33 is facing to annular groove 35.
Claims (9)
1. an overflow cutting valve, comprise valve body and valve gap, described valve body comprises housing, valve floats core assembly and pressurize assembly, be provided with partitioning wall in described housing and housing is separated into epicoele and cavity of resorption, described partitioning wall is provided with vent, described pressurize assembly is arranged in epicoele, described valve floats core assembly and is arranged in cavity of resorption, described valve floats core assembly and comprises valve and float core and black box, described housing bottom and valve float between core the first Returnning spring, described valve floats core and can move in the cavity of resorption of housing, described black box and vent cooperatively interact,
It is characterized in that upper end that valve floats core 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 matched with vent and the annular solid being positioned at seal lower edge, the central position, the back side of described seal is provided with conical bore, described annular chamber wall is provided with the stop part extended to annular chamber center, the sharp top of described supporting post withstands on bottom described conical bore
Described annular solid is positioned at the below of stop part, and described black box is controlled in annular chamber by stop part, and
Described annular solid can make rocking action in space below stop part;
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 open at its lower end of described pressurize working of plastics, 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 outside of described pressurize working of plastics is provided with annular position, the upper base of pressurize working of plastics is provided with multiple gas-entered passageway communicated with pressurize working of plastics inner chamber, described rubber assembly is arranged on the upper base of pressurize working of plastics, described gas-entered passageway covers by described rubber assembly, annular convex rib is provided with below described annular position, described annular convex rib is seated the upper-end surface of partitioning wall, and described annular convex rib is provided with air outlet hole;
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;
When in fuel tank normal barometric pressure situation, fuel tank internal gas is exchanged by air outlet hole and extraneous gas; When fuel tank internal exists 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; Under fuel tank internal exists 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.
2. a kind of overflow cutting valve according to claim 1, it is characterized in that described seal comprises the lid with cavity and the supporting portion be arranged in lid inner chamber, described lid and annular solid 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, is characterized in that having a segment distance between described stop part and described annular solid, has a segment distance between described annular solid and the bottom of annular chamber.
4. a kind of overflow cutting valve according to claim 1, is characterized in that the leading portion of supporting post is cone, and the shaft section corner angle of described cone is less than the shaft section corner angle of conical bore.
5. a kind of overflow cutting valve according to claim 2, it is characterized in that the lower end surface of described vent is horizontal, 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, it is characterized in that multiple juts that described stop part is distributed in annular chamber wall surrounding by uniform intervals form, the exterior contour of described jut is arc surface.
7. a kind of overflow cutting valve according to claim 1, 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 gas-entered passageway covers by described umbrella portion.
8. a kind of overflow cutting valve according to claim 7, 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.
9. a kind of overflow cutting valve according to claim 1, it is characterized in that described housing central section is provided with air inlet/outlet, annular rib is provided with below described partitioning wall, form annular groove between described annular rib and described housing, described air inlet/outlet is facing to described annular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310438429.4A CN103470832B (en) | 2013-09-23 | 2013-09-23 | A kind of overflow cutting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310438429.4A CN103470832B (en) | 2013-09-23 | 2013-09-23 | A kind of overflow cutting valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103470832A CN103470832A (en) | 2013-12-25 |
| CN103470832B true CN103470832B (en) | 2015-10-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310438429.4A Active CN103470832B (en) | 2013-09-23 | 2013-09-23 | A kind of overflow cutting valve |
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| Country | Link |
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| CN (1) | CN103470832B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101680401A (en) * | 2007-04-26 | 2010-03-24 | 株式会社利富高 | Valve device for fuel tank |
| CN203477498U (en) * | 2013-09-23 | 2014-03-12 | 孙达立 | Overflow stop valve |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20319920U1 (en) * | 2003-12-23 | 2005-02-03 | A. Kayser Automotive Systems Gmbh | vent valve |
| US7717126B2 (en) * | 2005-07-08 | 2010-05-18 | Kyosan Denki Co., Ltd. | Float valve structure |
| JP4869201B2 (en) * | 2007-10-02 | 2012-02-08 | 株式会社パイオラックス | Float valve device |
-
2013
- 2013-09-23 CN CN201310438429.4A patent/CN103470832B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101680401A (en) * | 2007-04-26 | 2010-03-24 | 株式会社利富高 | Valve device for fuel tank |
| CN203477498U (en) * | 2013-09-23 | 2014-03-12 | 孙达立 | Overflow stop valve |
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| Publication number | Publication date |
|---|---|
| CN103470832A (en) | 2013-12-25 |
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