CN204922142U - Refuel trip valve of limiting quantity of - Google Patents
Refuel trip valve of limiting quantity of Download PDFInfo
- Publication number
- CN204922142U CN204922142U CN201520655047.1U CN201520655047U CN204922142U CN 204922142 U CN204922142 U CN 204922142U CN 201520655047 U CN201520655047 U CN 201520655047U CN 204922142 U CN204922142 U CN 204922142U
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- China
- Prior art keywords
- valve
- main part
- core main
- oil gas
- floating core
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- Self-Closing Valves And Venting Or Aerating Valves (AREA)
Abstract
The utility model discloses a refuel trip valve of limiting quantity of is when the vehicle jolts or overturn, and the valve housing body is in slope or horizontal state, and the spring promotes to float core main part's front end antedisplacement, and the middle part of sealed rubber tissue is in the horizontality and seals the lower port that oil gas distributed the passageway, avoids the fuel in the fuel cell excessive. The casing is floated core main part and is relied on the dead weight to move down gradually and compression spring by slope or horizontal state transformation during to vertical state in the valve, and slot is within a definite time torn out floating lower port A side that the action of gravity of core main part distributed the passageway from oil gas down in the middle part of sealed rubber tissue, and the inboard space of sealing rubber piece and the outside space of sealing rubber piece switch on through slot within a definite time, outside space atmospheric pressure at the inboard space of sealing rubber piece atmospheric pressure and sealing rubber piece reaches balanced in -process, simultaneously the middle part of sealing rubber piece is left the lower port that oil gas distributed the passageway down totally and is distributed the passageway at switching on totally until oil gas floating the action of gravity of core main part.
Description
Technical field
The utility model relates to a kind of cut-off valve be arranged in vehicle fuel tank, especially relates 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.
Model utility content
Technical problem to be solved in the utility model is to provide a kind of oiling limitation cut-off valve that can ensure the conducting of oil gas emission path when overturning under energy excellent sealing, normal state.
The utility model solves the problems of the technologies described above adopted technological scheme: a kind of limitation cut-off valve that refuels, comprise valve shell body, the valve inner housing of upper end open and floating core main part, described valve inner housing is positioned at described valve shell body, the upper end of described valve shell body has oil gas emission path, described floating core main part is positioned at described valve inner housing, spring is provided with between the bottom of valve inner housing and floating core main part, the upper end A side of floating core main part is connected with one end of sealed rubber sheet, the other end of sealed rubber sheet is connected with the B side, upper end of valve inner housing, the upper end A side of described floating core main part is positioned at the opposite side of the B side, upper end of described valve inner housing,
When valve shell body is in inclination or horizontal state, spring promotes the front end reach of floating core main part, and the intermediate portion of described sealed rubber sheet is in level and seals the lower end mouth of described oil gas emission path,
When valve inner housing by tilt or horizontal state transformation to vertical state time, floating core main part relies on deadweight to move down gradually and spring described in compressing, clearance gap is torn out from the lower end mouth A side of oil gas emission path in the intermediate portion of sealed rubber sheet under floating core main part Action of Gravity Field, and the inner space of caulking gum sheet and the outer space of caulking gum sheet are by described clearance gap conducting; Reach in equilibrium process at the inner space air pressure of caulking gum sheet and the outer space air pressure of caulking gum sheet; The intermediate portion of caulking gum sheet leaves the lower end mouth of described oil gas emission path completely until described oil gas emission path is in complete conducting under floating core main part Action of Gravity Field simultaneously.
Further preferred version of the present utility model is: described caulking gum sheet is sleeve configuration, the upper end A side of the floating core main part that one end of caulking gum sheet is fixed by plastics clasp.
Further preferred version of the present utility model is: be provided with block reinforcement in described oil gas emission path.Because the relative aperture of oil gas emission path is larger, caulking gum sheet is very thin simultaneously, the setting of block reinforcement can prevent the excessive adsorption force that causes of rubber gasket sealing rear fuel tank internal air pressure excessively strong, avoids appearance that floating core main part cannot be leaned on cannot to be come from the side tearing of oil gas emission path lower end by caulking gum sheet by deadweight.
Compared with prior art, the utility model has the advantages that when vehicle jolts or overturn, valve shell body is in inclination or horizontal state, spring promotes the front end reach of floating core main part, the intermediate portion of sealed rubber sheet is in level and seals the lower end mouth of described oil gas emission path, avoids the fuel oil in fuel tank excessive.
When valve inner housing by tilt or horizontal state transformation to vertical state time, floating core main part relies on deadweight to move down gradually and spring described in compressing, clearance gap is torn out from the lower end mouth A side of oil gas emission path in the intermediate portion of sealed rubber sheet under floating core main part Action of Gravity Field, and the inner space of caulking gum sheet and the outer space of caulking gum sheet are by described clearance gap conducting; Reach in equilibrium process at the inner space air pressure of caulking gum sheet and the outer space air pressure of caulking gum sheet; The intermediate portion of caulking gum sheet leaves the lower end mouth of described oil gas emission path completely until described oil gas emission path is in complete conducting under floating core main part Action of Gravity Field simultaneously, now the intermediate portion of sealed rubber sheet is in skewed, and the one end being connected sealed rubber sheet with the upper end A side of floating core main part is positioned at the other end of the sealed rubber sheet be connected with the B side, upper end of valve inner housing.
Clearance gap is torn out from the lower end mouth A side of oil gas emission path in the intermediate portion of sealed rubber sheet under floating core main part Action of Gravity Field, the strength (deadweight of floating core main part) of first tearing out needed for a clearance gap is relatively little, and then the adsorption force of caulking gum sheet is reduced gradually by the balance of inner and outer air pressure, finally make the conducting of oil gas emission path.
Accompanying drawing explanation
Fig. 1 is explosive view of the present utility model;
Fig. 2 is half sectional view of the present utility model;
Fig. 3 is the structural drawing of valve shell body of the present utility model;
Fig. 4 is the linkage structure of valve inner housing of the present utility model and sealed rubber sheet;
Fig. 5 is the linkage structure of caulking gum sheet of the present utility model and floating core main part;
Fig. 6 is the phase diagram after oil gas emission path of the present utility model seals completely;
Fig. 7 is A place enlarged view in Fig. 6;
Fig. 8 is the phase diagram of oil gas emission path of the present utility model when just opening;
Fig. 9 is B place enlarged view in Fig. 8;
Phase diagram when Figure 10 is oil gas emission path full open of the present utility model;
Figure 11 is C place enlarged view in Figure 10.
Embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.
A kind of limitation cut-off valve that refuels, comprise valve shell body 1, the valve inner housing 2 of upper end open and floating core main part 3, valve inner housing 2 is positioned at valve shell body 1, the upper end of valve shell body 1 has oil gas emission path 4, floating core main part 3 is positioned at valve inner housing 2, spring 5 is provided with between the bottom of valve inner housing 2 and floating core main part 3, the upper end A side 31 of floating core main part 3 is connected with one end of sealed rubber sheet 6, the other end of sealed rubber sheet 6 is connected with the B side, upper end 21 of valve inner housing 2, and the upper end A side 31 of floating core main part 3 is positioned at the opposite side of the B side, upper end 21 of valve inner housing 2; As shown in fig. 4-5.
When valve shell body 1 is in inclination or horizontal state, spring 5 promotes the front end reach of floating core main part 3, and the intermediate portion 61 of sealed rubber sheet 6 is in level and seals the lower end mouth 41 of oil gas emission path 4.As shown in fig. 6-7.
When valve inner housing 2 by tilt or horizontal state transformation to vertical state time, floating core main part 3 relies on deadweight to move down gradually and Compress Spring 5, clearance gap 42 is torn out from the lower end mouth A side 411 of oil gas emission path 4 in the intermediate portion 61 of sealed rubber sheet 6 under floating core main part 3 Action of Gravity Field, and the inner space 7 of caulking gum sheet 6 and the outer space 8 of caulking gum sheet 6 are by clearance gap 42 conducting; Reach in equilibrium process at inner space 7 air pressure of caulking gum sheet 6 and outer space 8 air pressure of caulking gum sheet 5; The intermediate portion 61 of caulking gum sheet 6 leaves the lower end mouth 41 of oil gas emission path 4 completely until oil gas emission path 4 is in complete conducting under floating core main part 3 Action of Gravity Field simultaneously.As shown in Fig. 6, Fig. 8 and Figure 10.
Caulking gum sheet 6 is in sleeve configuration, and the upper end A side 31 of the fixing floating core main part 3 of plastics clasp 62 is passed through in one end of caulking gum sheet 6.Block reinforcement 43 is provided with in oil gas emission path 4.As shown in figures 1 and 3.
Above oiling limitation cut-off valve provided by the utility model is described in detail, apply specific case herein to set forth principle of the present utility model and mode of execution, the explanation of above embodiment just understands the utility model and core concept for helping.Should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model principle, can also carry out some improvement and modification to the utility model, these improve and modify and also fall in the protection domain of the utility model claim.
Claims (3)
1. an oiling limitation cut-off valve, comprise valve shell body, the valve inner housing of upper end open and floating core main part, described valve inner housing is positioned at described valve shell body, it is characterized in that the upper end of described valve shell body has oil gas emission path, described floating core main part is positioned at described valve inner housing, spring is provided with between the bottom of valve inner housing and floating core main part, the upper end A side of floating core main part is connected with one end of sealed rubber sheet, the other end of sealed rubber sheet is connected with the B side, upper end of valve inner housing, the upper end A side of described floating core main part is positioned at the opposite side of the B side, upper end of described valve inner housing,
When valve shell body is in inclination or horizontal state, spring promotes the front end reach of floating core main part, and the intermediate portion of described sealed rubber sheet is in level and seals the lower end mouth of described oil gas emission path,
When valve inner housing by tilt or horizontal state transformation to vertical state time, floating core main part relies on deadweight to move down gradually and spring described in compressing, clearance gap is torn out from the lower end mouth A side of oil gas emission path in the intermediate portion of sealed rubber sheet under floating core main part Action of Gravity Field, and the inner space of caulking gum sheet and the outer space of caulking gum sheet are by described clearance gap conducting; Reach in equilibrium process at the inner space air pressure of caulking gum sheet and the outer space air pressure of caulking gum sheet; The intermediate portion of caulking gum sheet leaves the lower end mouth of described oil gas emission path completely until described oil gas emission path is in complete conducting under floating core main part Action of Gravity Field simultaneously.
2. one according to claim 1 refuels limitation cut-off valve, it is characterized in that described caulking gum sheet is sleeve configuration, the upper end A side of the floating core main part that one end of caulking gum sheet is fixed by plastics clasp.
3. one oiling limitation cut-off valve according to claim 1, is characterized in that being provided with block reinforcement in described oil gas emission path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520655047.1U CN204922142U (en) | 2015-08-27 | 2015-08-27 | Refuel trip valve of limiting quantity of |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520655047.1U CN204922142U (en) | 2015-08-27 | 2015-08-27 | Refuel trip valve of limiting quantity of |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204922142U true CN204922142U (en) | 2015-12-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520655047.1U Expired - Fee Related CN204922142U (en) | 2015-08-27 | 2015-08-27 | Refuel trip valve of limiting quantity of |
Country Status (1)
| Country | Link |
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| CN (1) | CN204922142U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105042149A (en) * | 2015-08-27 | 2015-11-11 | 孙达立 | Oil filling limiting stop valve |
-
2015
- 2015-08-27 CN CN201520655047.1U patent/CN204922142U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105042149A (en) * | 2015-08-27 | 2015-11-11 | 孙达立 | Oil filling limiting stop valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151230 Termination date: 20200827 |
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| CF01 | Termination of patent right due to non-payment of annual fee |