CN105042143A - Oil filling limiting stop valve - Google Patents
Oil filling limiting stop valve Download PDFInfo
- Publication number
- CN105042143A CN105042143A CN201510534513.5A CN201510534513A CN105042143A CN 105042143 A CN105042143 A CN 105042143A CN 201510534513 A CN201510534513 A CN 201510534513A CN 105042143 A CN105042143 A CN 105042143A
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- China
- Prior art keywords
- valve
- sealing ring
- main part
- core main
- sealing component
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/36—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position
Abstract
The invention discloses an oil filling limiting stop valve which comprises a valve body and an oil-gas separator. The valve body comprises a valve shield, a valve inner shell and a valve float element. The valve shield is arranged outside the valve inner shell. The valve float element is located in the valve inner shell. A spring is arranged between the bottom of the valve inner shell and the valve float element. The valve inner shell is connected with the oil-gas separator. A partition plate is arranged at the upper portion of the valve inner shell. An oil-gas diffusing hole communicated with the oil-gas separator is formed in the middle of the partition plate. The valve float element comprises a float element main part and a sealing component which can float vertically in the limited range. The sealing component comprises an upper sealing ring and a lower sealing ring which are integrally arranged. A central channel is arranged in the middle of the upper sealing ring and the middle of the lower sealing ring. The oil filling limiting stop valve has the beneficial effects that when a vehicle bumps or overturns, fuel in a fuel tank can be prevented from overflowing outwards.
Description
Technical field
The present invention relates to a kind of cut-off valve be arranged in vehicle fuel tank, especially relate to a kind of limitation cut-off valve that refuels.
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.Authorize on September 14th, 2011 patent No. announced 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; be close to as skin valve the upper surface that valve floats core, and valve floats between core and valve bottom and is provided with spring.In the normal oiling of fuel tank or with in oily process, valve floats core and falls back to valve bottom, and spring is in compressive state, form air-flow path in valve body, make fuel tank keep normal air pressure.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.The valve mouth of pipe of this overflow cutting valve is connected with canister.The oil gas major part that fuel tank is distributed by overflow cutting valve enters into canister, again enters air after being filtered by canister.
ORVR (OnboardRefuelingVaporRecovery) i.e. vehicle-mounted oil filling gas recovery system for oil, be a kind of vehicle emission control system, it can collect the fuel vapor evaporated from fuel tank in refueling process.This technology is that U.S. EPA was released in 1994 using a kind of alternative as secondary gas recovery system for oil.In this oiling gas recovery system for oil, fuel tanks of automobile is installed an oiling limitation cut-off valve, comprise a valve body and deaerator, the Single port of deaerator is communicated with oiling port, and the another port of deaerator is communicated with canister.The function of this oiling limitation cut-off valve is: must seal when overturning, close after must reopen, dynamic leakage must be little, stops that liquid infiltrates in canister, oil level is closed highly accurate, bear the oil gas distributed simultaneously and all enter canister and filter.
The valve body refueled on running water valve comprises valve inner housing and valve floats core, the bottom of valve inner housing and valve float between core and are provided with spring, valve floats Sealing core being provided with and coordinating with the oil gas sending-out hole of valve inner housing, when the position of fuel tank changes suddenly, valve floats core and is in transverse state, under the action of the spring, the valve Sealing floated on core blocks oil gas sending-out hole, to prevent the spilling of fuel oil.In order to discharge the air in fuel tank in refueling process rapidly, need by the bore of oil gas sending-out hole arrange more a little bigger, the oil gas sending-out hole of larger caliber needs to coordinate with larger-diameter Sealing, larger-diameter Sealing has stronger adsorptive power, and Sealing has better sealability.Under valve body is in vertical state, the deadweight that valve floats core makes Sealing leave oil gas sending-out hole, because oil gas sending-out hole connects canister, so can reduce the pollution of oil gas to air.And existing relief valve is without major path bore, during oiling, oil gas directly leads directly to air by oil filler, causes larger pollution to air.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of oiling limitation cut-off valve that can ensure the conducting of oil gas sending-out hole when overturning under energy excellent sealing, normal state.
The present invention solves the problems of the technologies described above adopted technological scheme: a kind of limitation cut-off valve that refuels, comprise valve body and deaerator, valve body comprises valve guard shield, valve inner housing and valve and floats core, valve guard shield is arranged on outside valve inner housing, valve floats core and is positioned at described valve inner housing, the bottom of valve inner housing and valve float between core and are provided with spring, valve inner housing is connected with deaerator, valve inner housing top is provided with demarcation strip, the oil gas sending-out hole be communicated with deaerator is provided with in the middle of described demarcation strip
Described valve floats core and comprises the sealing component that can fluctuate in floating core main part and restriction amplitude, described sealing component comprises the upper sealing ring and lower sealing ring that are wholely set, the centre of upper sealing ring and lower sealing ring is provided with central passage, valve float core be in inclination or horizontal state under, spring promotes the reach of floating core main part to be made the front end of floating core main part be against on described lower sealing ring and seals described central passage, and upper sealing ring is against on described demarcation strip and seals described oil gas sending-out hole;
Valve float core from inclination or horizontal state transformation to vertical state procedure, floating core main part relies on the spring described in deadweight compression, because main passage bore is larger, so valve reopens more difficult when there being certain pressure in fuel tank, therefore floating core main part front end is first made to be separated with lower sealing ring, the deadweight of floating core continues the through hole after opening separation, and suction is less, opens with regard to Vietnamese side just.The outer space of sealing component and the inner space of sealing component are by central passage conducting, the air pressure of the air pressure of the outer space of sealing component and the inner space of sealing component reaches balance, valve floats core and relies on gravity that upper sealing ring and demarcation strip are separated, and oil gas sending-out hole is in normally state.
The further preferred version of the present invention is: described floating core main part top arranges guide housing, forms an amplitude limit space of fluctuating for sealing component between floating core main part and guide housing.Under valve floats the horizontal state of core, floating core main part moves forward and seals central passage, and upper sealing ring seals oil gas sending-out hole; Sealing component can move up and down in amplitude limit space, and when moving up, seal oil gas sending-out hole, when moving down, especially emission path is opened.
The further preferred version of the present invention is: the centre of sealing component is fixedly installed accessory plate, and upper sealing ring is positioned at the top of accessory plate, and lower sealing ring is positioned at the below of accessory plate, and described accessory plate fluctuates in amplitude limit space.Sealing component is made up of rubber material, and accessory plate can move up and down and can not be out of shape by auxiliary seal component.
The further preferred version of the present invention is: be provided with joint between upper sealing ring and lower sealing ring, and described joint is the attachment post of multiple annular spread, described accessory plate is provided with the through hole passed for described attachment post.Accessory plate can prevent sealing component from shifting out in amplitude limit space.
The further preferred version of the present invention is: upper sealing ring is bowl bodies, and described lower sealing ring is ring bodies, and the root diameter (RD) of described bowl bodies is suitable with the diameter of ring bodies.Attraction force between lower sealing ring and floating core main part is less, and when floating core main part moves down because of gravity, both are easy to separately.
The further preferred version of the present invention is: the tapered shape in front end of described floating core main part.Taper withstands lower sealing ring closing center passage, and taper is easier to lower sealing ring and is separated, and central passage is opened, and inner and outer air pressure reaches balance, and the adsorption force between upper sealing ring and demarcation strip reduces, and upper sealing ring is separated with demarcation strip, the conducting of oil gas sending-out hole.
The further preferred version of the present invention is: pass through ultrasonic welding between described guide housing and floating core main part.
The further preferred version of the present invention is: the lower side of deaerator is provided with the interface be connected with valve body inner casing, is provided with O type circle in described interface.
The further preferred version of the present invention is: described interface is provided with the valve upper cover be welded on fuel tank, facilitates cut-off valve to be installed on fuel tank.
Compared with prior art, advantage of the present invention is when vehicle jolts or overturn, under valve floats the horizontal state of core, spring promotes the reach of floating core main part to be made the front end of floating core main part be against on described lower sealing ring and seals described central passage, and upper sealing ring is against on described demarcation strip and seals described oil gas sending-out hole; Can prevent the fuel oil in fuel tank from outwards overflowing.Under vehicle returns to normal state again, core is floated from horizontal state transformation to vertical state procedure at valve, floating core main part relies on the spring described in deadweight compression, floating core main part front end is separated with lower sealing ring, the outer space of sealing component and the inner space of sealing component are by central passage conducting, the external atmospheric pressure of sealing component and the inner side air pressure of sealing component reach balance, valve floats core and relies on gravity that upper sealing ring and demarcation strip are separated, avoid the adsorption force because of upper sealing ring excessive and cannot be separated with demarcation strip, ensure in normal state, oil gas sending-out hole is in normally state.
Accompanying drawing explanation
Fig. 1 is stereogram of the present invention;
Fig. 2 is the sectional view of oil gas sending-out hole of the present invention conducting;
The enlarged view at A place in Fig. 3 Fig. 2;
Fig. 4 is half sectional view of the present invention;
Sectional view when Fig. 5 is oil gas sending-out hole of the present invention closedown;
Fig. 6 is B place enlarged view in Fig. 5;
Structural drawing when Fig. 7 is central passage of the present invention firm conducting;
Fig. 8 is C place enlarged view in Fig. 7;
Structural drawing when Fig. 9 is oil gas sending-out hole conducting of the present invention;
Figure 10 is the enlarged view at D place in Fig. 9;
Figure 11 is explosive view of the present invention;
Figure 12 is the structural drawing that valve of the present invention floats core;
Figure 13 is the structural drawing of sealing component of the present invention and accessory plate.
Embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the present invention.
As Figure 1-Figure 11, a kind of limitation cut-off valve that refuels, comprise valve body 1 and deaerator 2, valve body 1 comprises valve guard shield 3, valve inner housing 4 and valve float core 5, valve guard shield 3 is arranged on outside valve inner housing 4, valve floats core 5 and is positioned at valve inner housing 4, the bottom of valve inner housing 4 and valve float between core 5 and are provided with spring 7, valve inner housing 4 is connected with deaerator 2, valve inner housing 4 top is provided with demarcation strip 8, the oil gas sending-out hole 9 be communicated with deaerator 2 is provided with in the middle of demarcation strip 8, valve floats core 5 and comprises the sealing component 11 that can fluctuate in floating core main part 10 and restriction amplitude, sealing component 11 comprises the upper sealing ring 12 and lower sealing ring 13 that are wholely set, upper sealing ring 12 is provided with central passage 14 with the centre of lower sealing ring 13, valve float core 5 be in inclination or horizontal state under, spring 7 promotes the reach of floating core main part 10 to be made the front end of floating core main part 10 be against on lower sealing ring 13 and seals central passage 14, upper sealing ring 12 is against on demarcation strip 8 and seals oil gas sending-out hole 9, valve float core 5 from inclination or horizontal state transformation to vertical state procedure, floating core main part 10 relies on deadweight Compress Spring 7, floating core main part 10 front end is separated with lower sealing ring 13, the outer space 16 of sealing component 11 and the inner space 17 of sealing component 11 are by central passage 14 conducting, the air pressure of the air pressure of the outer space 16 of sealing component 11 and the inner space 17 of sealing component 11 reaches balance, valve floats core 5 and relies on gravity that upper sealing ring 12 and demarcation strip 8 are separated, and oil gas sending-out hole 9 is in normally state.
As shown in Fig. 4-Fig. 6, Figure 11-Figure 13, floating core main part 10 top arranges guide housing 19, forms an amplitude limit space 20 of fluctuating for sealing component 11 between floating core main part 10 and guide housing 19.The centre of sealing component 11 is fixedly installed accessory plate 21, and upper sealing ring 12 is positioned at the top of accessory plate 21, and lower sealing ring position 13 is in the below of accessory plate 21, and accessory plate 21 fluctuates in amplitude limit space 20.Be provided with joint 22 between upper sealing ring 12 and lower sealing ring 13, joint 22 is the attachment post 23 of multiple annular spread, accessory plate 21 is provided with the through hole 24 passed for attachment post 23.
Shown in Figure 11-Figure 13, upper sealing ring 12 is bowl bodies, and lower sealing ring 13 is ring bodies, and root 121 diameter of bowl bodies 12 is suitable with the diameter of ring bodies 13.The tapered shape in front end of floating core main part 10.Ultrasonic welding is passed through between guide housing 19 and floating core main part 10.The lower side of deaerator 2 is provided with the interface 25 be connected with valve body inner casing 4, is provided with O type circle 26 in interface 25.Interface 25 is provided with the valve upper cover 27 be welded on fuel tank.
Be described in detail one oiling limitation cut-off valve provided by the present invention above, apply specific case herein and set forth principle of the present invention and mode of execution, the explanation of above embodiment just understands the present invention and core concept for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
Claims (9)
1. an oiling limitation cut-off valve, comprise valve body and deaerator, valve body comprises valve guard shield, valve inner housing and valve and floats core, valve guard shield is arranged on outside valve inner housing, and valve floats core and is positioned at described valve inner housing, and the bottom of valve inner housing and valve float between core and be provided with spring, valve inner housing is connected with deaerator, it is characterized in that valve inner housing top is provided with demarcation strip, in the middle of described demarcation strip, be provided with the oil gas sending-out hole be communicated with deaerator
Described valve floats core and comprises the sealing component that can fluctuate in floating core main part and restriction amplitude, described sealing component comprises the upper sealing ring and lower sealing ring that are wholely set, the centre of upper sealing ring and lower sealing ring is provided with central passage, under valve floats core inclination or horizontal state, spring promotes the reach of floating core main part to be made the front end of floating core main part be against on described lower sealing ring and seals described central passage, and upper sealing ring is against on described demarcation strip and seals described oil gas sending-out hole;
Valve float core from inclination or horizontal state transformation to vertical state procedure, floating core main part relies on the spring described in deadweight compression, floating core main part front end is separated with lower sealing ring, the outer space of sealing component and the inner space of sealing component are by central passage conducting, the air pressure of the air pressure of the outer space of sealing component and the inner space of sealing component reaches balance, valve floats core and relies on gravity that upper sealing ring and demarcation strip are separated, and oil gas sending-out hole is in normally state.
2. one oiling limitation cut-off valve according to claim 1, is characterized in that described floating core main part top arranges guide housing, forms an amplitude limit space of fluctuating for sealing component between floating core main part and guide housing.
3. one oiling limitation cut-off valve according to claim 2, it is characterized in that the centre of sealing component is fixedly installed accessory plate, upper sealing ring is positioned at the top of accessory plate, and lower sealing ring is positioned at the below of accessory plate, and described accessory plate fluctuates in amplitude limit space.
4. one oiling limitation cut-off valve according to claim 3, it is characterized in that being provided with joint between upper sealing ring and lower sealing ring, described joint is the attachment post of multiple annular spread, described accessory plate is provided with the through hole passed for described attachment post.
5. one oiling limitation cut-off valve according to claim 1, it is characterized in that upper sealing ring is bowl bodies, described lower sealing ring is ring bodies, and the root diameter (RD) of described bowl bodies is suitable with the diameter of ring bodies.
6. one oiling limitation cut-off valve according to claim 1, is characterized in that the tapered shape in front end of described floating core main part.
7. one oiling limitation cut-off valve according to claim 3, is characterized in that passing through ultrasonic welding between described guide housing and floating core main part.
8. one oiling limitation cut-off valve according to claim 1, is characterized in that the lower side of deaerator is provided with the interface be connected with valve body inner casing, is provided with O type circle in described interface.
9. one oiling limitation cut-off valve according to claim 6, is characterized in that described interface being provided with the valve upper cover be welded on fuel tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510534513.5A CN105042143A (en) | 2015-08-27 | 2015-08-27 | Oil filling limiting stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510534513.5A CN105042143A (en) | 2015-08-27 | 2015-08-27 | Oil filling limiting stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105042143A true CN105042143A (en) | 2015-11-11 |
Family
ID=54448948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510534513.5A Pending CN105042143A (en) | 2015-08-27 | 2015-08-27 | Oil filling limiting stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105042143A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107763298A (en) * | 2017-10-18 | 2018-03-06 | 亚普汽车部件股份有限公司 | New-type oil tank liquid level controls air bleeding valve |
| CN110397781A (en) * | 2019-07-19 | 2019-11-01 | 九昌新能源技术(镇江)有限公司 | A kind of device of vapour liquid separator and oil tank liquid level control pile-up valve |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5950655A (en) * | 1997-02-04 | 1999-09-14 | G.T. Products, Inc. | Mechanical seal ORVR system and control valve |
| CN101332769A (en) * | 2008-07-24 | 2008-12-31 | 江苏大学 | Vehicle-mounted fuel vapor recovery device and method |
| CN201189819Y (en) * | 2008-03-27 | 2009-02-04 | 高尚玉 | Single-stage gravity valve, double stage gravity valve and multifunction valve |
| CN102713233A (en) * | 2009-12-25 | 2012-10-03 | 株式会社利富高 | Valve device for fuel tank |
-
2015
- 2015-08-27 CN CN201510534513.5A patent/CN105042143A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5950655A (en) * | 1997-02-04 | 1999-09-14 | G.T. Products, Inc. | Mechanical seal ORVR system and control valve |
| CN201189819Y (en) * | 2008-03-27 | 2009-02-04 | 高尚玉 | Single-stage gravity valve, double stage gravity valve and multifunction valve |
| CN101332769A (en) * | 2008-07-24 | 2008-12-31 | 江苏大学 | Vehicle-mounted fuel vapor recovery device and method |
| CN102713233A (en) * | 2009-12-25 | 2012-10-03 | 株式会社利富高 | Valve device for fuel tank |
Non-Patent Citations (1)
| Title |
|---|
| 蔡锦榕等: "控制轿车加油排放的ORVR技术综述", 《车用发动机》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107763298A (en) * | 2017-10-18 | 2018-03-06 | 亚普汽车部件股份有限公司 | New-type oil tank liquid level controls air bleeding valve |
| CN110397781A (en) * | 2019-07-19 | 2019-11-01 | 九昌新能源技术(镇江)有限公司 | A kind of device of vapour liquid separator and oil tank liquid level control pile-up valve |
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| PB01 | Publication | ||
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Application publication date: 20151111 |