CN103321798A - Topping-preventive valve with separating barrel - Google Patents
Topping-preventive valve with separating barrel Download PDFInfo
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- CN103321798A CN103321798A CN2013102543296A CN201310254329A CN103321798A CN 103321798 A CN103321798 A CN 103321798A CN 2013102543296 A CN2013102543296 A CN 2013102543296A CN 201310254329 A CN201310254329 A CN 201310254329A CN 103321798 A CN103321798 A CN 103321798A
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- valve
- pressure control
- isolating cylinder
- control valve
- valve seat
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- Self-Closing Valves And Venting Or Aerating Valves (AREA)
- Float Valves (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
The invention discloses a topping-preventive valve with a separating barrel. A valve body (1) and a valve seat (2) are connected to form a valve cavity (B), and a cover-shaped floater (3) is arranged above the valve seat (2). A steel ball (4) disposed between the floater (3) and the valve seat (2) can move freely and can enable the floater (3) to move up and down inside the valve cavity (B). A rubber sealing ring (5) is embedded in the outer wall of the valve body (1). The mounting face of the rubber sealing ring (5) is higher than the valve seat (2). The separating barrel (23) protruding upwards from the bottom of the valve seat (2) is arranged on an outer ring of the floater (3). Through arrangement of the separating barrel, the topping-preventive valve cannot be closed by air pressure no matter how high oil pressure is, the oil pressure can be always kept within a normal range during operation, and safety is high.
Description
Technical field
The present invention relates to a kind of mechanical valve, especially be installed in the vent valve that the anti-fuel oil on the general gasoline engines fuel tank is toppled over.
Background technique
In the prior art, be installed on the vent valve (as shown in Figure 1) on the general gasoline engines fuel tank, by valve body, valve base sealing forms valve pocket, the cavity top is provided with the first ventilating hole, this first ventilating hole is communicated with by a valve port with valve pocket, the valve seat upper-end surface is provided with conic shaped, above valve seat, be provided with a bottle cap shape float, be provided with in the top outer of float and cooperate the spool that to close the first ventilating hole with valve port, place a steel ball between float and the valve seat, after the anti-dumping pressure control valve tilted to several angle, steel ball moved and float is moved up and down along valve interior wall, the gapped gas that passes through between float and the valve interior wall.
There is following defective in the structure of this traditional anti-dumping pressure control valve:
1, air-flow all flows in the slit between valve body and float, fuel tank is by the overturning-preventing valve exhaust time, because the resistance of air-flow can produce pressure reduction, the pressure of B district air pressure is much smaller than the A district, and pressure reduction is larger to the active force that float makes progress, and extraction flow is larger, this pressure reduction is also larger, when pressure reduction is larger, will promote float and rise and to close the anti-dumping pressure control valve, cause the fuel tank can't release, have potential safety hazard.
2, adopt welding manner to connect between the valve body of anti-dumping pressure control valve and the valve seat, dimensional accuracy is difficult to control, and welding manufacturing efficiency is lower.
3, the anti-dumping pressure control valve is in the bottom of valve at the second ventilating hole of fuel tank internal, and the position is low, easily immerses below the fuel tank liquid level, and the fuel oil of fuel tank internal can enter the anti-dumping pressure control valve, causes unexpected the leakage.
Summary of the invention
For deficiency of the prior art, the invention provides a kind of anti-dumping pressure control valve that is provided with isolating cylinder, by Structure Improvement targetedly, solved the security hidden trouble that anti-dumping pressure control valve accident is closed.
A kind of anti-dumping pressure control valve that is provided with isolating cylinder, be connected to form valve pocket by valve body and valve seat, the cavity top is provided with the first ventilating hole, and this first ventilating hole is communicated with by a valve port with valve pocket, upper-end surface, valve seat bottom is provided with conic shaped, and cross recess can vertically be set on conic shaped; Above conic shaped, be provided with a lid shape float, be provided with in the top outer of float and cooperate the spool that to close the first ventilating hole with valve port; Place a steel ball between float and the conic shaped, after the anti-dumping pressure control valve tilts to several angle, steel ball moves and float is moved up and down in valve pocket inside, outer wall at valve body is embedded with rubber seal, the attachment face of described rubber seal is higher than valve seat, wherein, in the outer ring of float, bottom valve seat, project upwards isolating cylinder is set.
Under the setting of said structure, form toroidal cavity between described isolating cylinder and the valve body, described the first ventilating hole is communicated with by this toroidal cavity with the second ventilating hole.
Preferably, the lower edge that is close to rubber seal arranges at least one second ventilating hole, two the second ventilating holes is set at least for better.
Further, at least one size is set less than the liquid port of the second ventilating hole size bottom the described valve seat.
Further, connect by elastic closing structure between described valve body and the valve seat.Such as, at valve body fastening hole is set, the fastening boss of phase embedding corresponding to fastening hole is set on the valve seat.After valve body and valve seat were in place by elastic closing structure, resiliently deformable can occur in the elastic support pin on the valve seat, to eliminate matching gap.
Then, described the first ventilating hole and valve body is integrally formed and can be connected to air filter of engine or canister by pipeline, described the second ventilating hole is exposed to the above space of fuel tank pasta.
Compared with prior art, advantage of the present invention is:
Traditional anti-dumping pressure control valve is arranged on the bottom surface of valve seat owing to the second ventilating hole, oil vapor in the fuel tank float of from the valve port discharge process, must flowing through, the mobile meeting of oil vapor is at the larger pressure reduction of the upper and lower generation of float, float can rise under this differential pressure action, when the oil vapor flow is larger, can cause anti-dumping pressure control valve accident to close, and more the pass is tighter, causes tank pressure too high, affect engine operation, and have serious potential safety hazard.
The anti-dumping pressure control valve that is provided with isolating cylinder of the present invention, be provided with isolating cylinder at valve seat, then most air-flows can flow between valve body and isolating cylinder, only has air-flow seldom between float and the isolating cylinder, therefore fuel tank is by the overturning-preventing valve exhaust time, and the pressure reduction in B district and A district is very little, and pressure reduction is very little to the active force that float makes progress, this power is much smaller than float gravity, thus float can be under pressure reduction so that anti-dumping pressure control valve accident close.
That is, no matter how high tank pressure is, and the anti-dumping pressure control valve can not closed by air pressure, can all the time tank pressure be remained in the normal range (NR) during work, safe.
Description of drawings
Fig. 1 is the structural representation of traditional vent valve.
Fig. 2 to Fig. 5 is the structural representation that several anti-dumping pressure control valve of the present invention setting is provided with the mode of execution of isolating cylinder.
Fig. 6 is the side view based on the anti-dumping pressure control valve of Fig. 5.
Fig. 7 is based on the B of the anti-dumping pressure control valve that is provided with isolating cylinder of Fig. 5-B sectional view.
Fig. 8 is based on the C of the anti-dumping pressure control valve that is provided with isolating cylinder of Fig. 5-C sectional view.
Fig. 9 is the plan view based on the anti-dumping pressure control valve that is provided with isolating cylinder of Fig. 5.
Figure 10 is based on the A of the anti-dumping pressure control valve that is provided with isolating cylinder of Fig. 5-A sectional view.
Figure 11 is the worm's eye view based on the anti-dumping pressure control valve that is provided with isolating cylinder of Fig. 5.
Figure 12 is based on the D of the anti-dumping pressure control valve that is provided with isolating cylinder of Fig. 5-D sectional view.
Figure 13 be based on the structural representation of the valve body of 5 anti-dumping pressure control valve.
Figure 14 be based on the structural representation of the valve seat of 5 anti-dumping pressure control valve.
Number in the figure explanation: 1. valve body, 11. first ventilating holes, 12. valve ports, 13. toroidal cavities, 14. fastening hole, 15. elastic support pin, 2. valve seats, 21. the second ventilating hole, 22. conic shaped, 23. isolating cylinders, 24. liquid port, 25. fasten boss, 3. float, 31. spool, 4. steel ball, 5. rubber seal, 6. fuel tank, A. float inner chamber, B. valve pocket.
Embodiment
In conjunction with shown in Figure 2, a kind of anti-dumping pressure control valve that is provided with isolating cylinder of the present invention, valve body 1, valve seat 2 are buckled into valve pocket B, the top of valve body 1 is wholely set the first ventilating hole 11, this first ventilating hole 11 is communicated with by valve port 12 with valve pocket B, valve seat 2 bottom centre positions are integrally formed with conic shaped 22, can vertically offer cross recess in conic shaped 22;
Above valve seat 2, arrange and cover shape float 3, be provided with in the top outer of float 3 and cooperate the spool 31 that to close the first ventilating hole with valve port 12, can be with sphere-contact between spool 31 and the valve port 12, also can contact with hollows, line contact can guarantee the sealing that valve cuts out, even cone structure can be guaranteed spool 31 have minor shifts still can active homing and with valve port 12 sealings;
Place a steel ball 4 between float 3 and the conic shaped 22, after the anti-dumping pressure control valve tilts to several angle, steel ball 4 can move in conic shaped and float 3 is moved up and down along isolating cylinder 23 inwalls, valve seat 2 tops, between float 3 and the conic shaped 22, the zone at steel ball 4 places forms float inner chamber A; Here, the purpose that conic shaped 22 is set at valve seat 2 is: after the anti-dumping pressure control valve tilts to several angle, make steel ball roll to drive float 3 along conic shaped and open and close vent valve;
Especially, in the outer ring of float 3, projected upwards by valve seat 2 bottoms isolating cylinder 23 is set.Set up an isolating cylinder 23 at valve seat 2, float 3 outsides cooperate with isolating cylinder 23 inwalls, the inwall of the outer wall of isolating cylinder 23 and valve body 1 forms toroidal cavity 13, the first ventilating hole 11 and the second ventilating hole 21 are communicated with by this toroidal cavity 13, so toroidal cavity 13 just becomes the central core of circulation of fuel tank ventilation, slit between float 3 and the isolating cylinder 23 then becomes secondary channel, in the time of can preventing so that the fuel tank extraction flow is larger under differential pressure action float 3 close the anti-dumping pressure control valve, guarantee the normal release of fuel tank, eliminate safe hidden trouble.
Setting-in rubber seal 5 on the outer wall of valve body 1, and the attachment face of rubber seal 5 is higher than valve seat 2; The lower edge that is close to rubber seal 5 arranges at least one second ventilating hole 21, two the second ventilating holes 21 is set at least better.Forming toroidal cavity 13, the first ventilating holes 11 between the inwall of the outer wall of isolating cylinder 23 and valve body 1 is communicated with by this toroidal cavity 13 with the second ventilating hole 21; Valve seat 2 bottoms are provided with at least one liquid port 24; The size of liquid port 24 is less than the size of the second ventilating hole 21.
Can adopt the form of welding to connect between valve body 1 and the valve seat 2.Also can reach during work and all the time tank pressure is remained on an effect in the safety range, and have and prevent that fuel oil from passing through the effect of anti-dumping pressure control valve accidental release.
In conjunction with shown in Figure 3, the another kind of mode of execution of this anti-dumping pressure control valve, take embodiment 3 as the basis, and in being retained in valve, arrange on the basis of the structural design mode that connects with the form of welding between isolating cylinder 23, valve body 1 and the valve seat 2, the second ventilating hole 21 can be arranged at the bottom of anti-dumping pressure control valve, can also reach during work and all the time tank pressure is remained on an effect in the safety range.
In conjunction with shown in Figure 4, the another kind of mode of execution of this anti-dumping pressure control valve, take embodiment 2 as the basis, be arranged on the basis of the design bottom the anti-dumping pressure control valve at reservation isolating cylinder 23, the second ventilating hole 21, can connect by elastic closing structure between valve body 1 and the valve seat 2, this kind mode has and all the time tank pressure is remained on an effect in the safety range.
, on embodiment 1 basis, in retention valve, arrange on the basis of design that isolating cylinder 23, the second ventilating hole 21 be arranged on valve body 1 side to shown in Figure 14 in conjunction with Fig. 5, connect by elastic closing structure between valve body 1 and the valve seat 2.Such as, at valve body 1 fastening hole 13 is set, be arranged at fastening boss 25 corresponding to fastening hole on the valve seat 2, and elastic support pin 15 be set so that fasten tightr.
When specifically using, at fuel tank 6 the vent valve mounting hole is set, this mounting hole and rubber seal 5 interference fit, valve seat 2 bottoms of anti-dumping pressure control valve only arrange very little liquid port, and the second ventilating hole 21 is arranged at the side, and be exposed to the above space of pasta in the fuel tank 6, fuel tank is when exhaust, oil vapor in the fuel tank 6 enters the valve pocket B at float top from toroidal cavity 13 by the second ventilating hole 21, be communicated to the valve port 12 that is positioned at valve body 1 inside top, and by the first ventilating hole 11 usefulness pipeline connecting engine air filter or canisters.The anti-dumping pressure control valve of this embedding fuel tank mounting hole designs, and has saved the top outer space of fuel tank 6, and the safety and reliability of this design will improve greatly after implementing the present invention.
Extremely shown in Figure 14 in conjunction with Fig. 6, a kind of anti-dumping pressure control valve, on embodiment 1 architecture basics, the individual number average of the second ventilating hole 21, liquid port 24, fastening hole 14, fastening boss 25 is set to four, as a kind of mode of execution.
The above; it only is better case study on implementation of the present invention; be not that the present invention is imposed any restrictions; every similar mode of any simple modification, change, employing that essence is done above embodiment according to the present invention substitutes and the variation of equivalent structure, all still belongs in the protection domain of technical solution of the present invention.
Claims (10)
1. anti-dumping pressure control valve that is provided with isolating cylinder, be connected to form valve pocket (B) by valve body (1) and valve seat (2), the cavity top is provided with the first ventilating hole (11), this first ventilating hole (11) is communicated with by a valve port (12) with valve pocket (B), upper-end surface, valve seat (2) bottom is provided with conic shaped (22), be provided with a lid shape float (3) in conic shaped (22) top, be provided with in the top outer of float (3) and cooperate the spool (31) that to close the first ventilating hole (11) with valve port (12), place a steel ball (4) between float (3) and the conic shaped (22), steel ball (4) can move freely and float (3) is moved up and down in valve pocket (B) inside, outer wall at valve body (1) is embedded with rubber seal (5), the attachment face of described rubber seal (5) is higher than valve seat (2), it is characterized in that: the periphery in float (3) projects upwards bottom valve seat (2) and is provided with isolating cylinder (23).
2. the anti-dumping pressure control valve that is provided with isolating cylinder according to claim 1 is characterized in that, the lower edge that is close to rubber seal (5) arranges at least one second ventilating hole (21).
3. the anti-dumping pressure control valve that is provided with isolating cylinder according to claim 1, it is characterized in that, form toroidal cavity (13) between the inwall of the outer wall of described isolating cylinder (23) and valve body (1), described the first ventilating hole (11) is communicated with by this toroidal cavity (13) with the second ventilating hole (21).
4. each described anti-dumping pressure control valve that is provided with isolating cylinder in 3 according to claim 1 is characterized in that, described valve seat (2) bottom is provided with at least one liquid port (24).
5. the anti-dumping pressure control valve that is provided with isolating cylinder according to claim 4 is characterized in that, the size of described liquid port (24) is less than the size of the second ventilating hole (21).
6. according to claim 1, each described anti-dumping pressure control valve that is provided with isolating cylinder in 2,3 or 5, it is characterized in that, connect by elastic closing structure between valve body (1) and the valve seat (2).
7. the anti-dumping pressure control valve that is provided with isolating cylinder according to claim 6 is characterized in that, fastening hole (14) is set on the described valve body (1), and valve seat (2) upward arranges the fastening boss (25) with the corresponding phase embedding of fastening hole (14).
8. the anti-dumping pressure control valve that is provided with isolating cylinder according to claim 7 is characterized in that, also is provided with on the described valve seat (2) for the elastic support pin (15) of eliminating matching gap between the elastic buckles component structure.
9. according to the 1 described anti-dumping pressure control valve that is provided with isolating cylinder in the claim, it is characterized in that, described the first ventilating hole (11) and valve body (1) are integrally formed and can be connected to air filter of engine or canister by pipeline, and described the second ventilating hole (21) is exposed to the above space of fuel tank (6) pasta.
10. the anti-dumping pressure control valve that is provided with isolating cylinder according to claim 1 is characterized in that, described conic shaped (22) vertically is provided with cross recess.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102543296A CN103321798A (en) | 2013-06-25 | 2013-06-25 | Topping-preventive valve with separating barrel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102543296A CN103321798A (en) | 2013-06-25 | 2013-06-25 | Topping-preventive valve with separating barrel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103321798A true CN103321798A (en) | 2013-09-25 |
Family
ID=49190779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102543296A Pending CN103321798A (en) | 2013-06-25 | 2013-06-25 | Topping-preventive valve with separating barrel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103321798A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1349598A (en) * | 1999-03-11 | 2002-05-15 | 拉维夫精密注射器成型公司 | Over filling interdiction, vent and roll over valve |
| US20070193561A1 (en) * | 2006-02-13 | 2007-08-23 | Eaton Corporation | Double shut-off refueling valve |
| CN101180485A (en) * | 2005-05-24 | 2008-05-14 | 因勒纪汽车***研究公司 | Clapet pour circuit de mise a l'air d'un reservoir a liquide |
| US20080149193A1 (en) * | 2006-12-22 | 2008-06-26 | Eaton Corporation | Vent valve |
| US20110186149A1 (en) * | 2010-02-02 | 2011-08-04 | Kyosan Denki Co., Ltd. | Fill-up control valve device |
| CN102251891A (en) * | 2011-07-20 | 2011-11-23 | 重庆润通动力有限公司 | Fuel oil tank air vent valve |
| EP2514621A1 (en) * | 2009-12-17 | 2012-10-24 | Nifco Inc. | Fuel tank valve device |
| CN103306867A (en) * | 2013-06-25 | 2013-09-18 | 苏州圆能动力科技有限公司 | Anti-dumping valve |
| CN203412684U (en) * | 2013-06-25 | 2014-01-29 | 苏州圆能动力科技有限公司 | Anti-dumping valve |
| CN203488288U (en) * | 2013-06-25 | 2014-03-19 | 苏州圆能动力科技有限公司 | Anti-dumping valve equipped with isolation cylinder |
-
2013
- 2013-06-25 CN CN2013102543296A patent/CN103321798A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1349598A (en) * | 1999-03-11 | 2002-05-15 | 拉维夫精密注射器成型公司 | Over filling interdiction, vent and roll over valve |
| CN101180485A (en) * | 2005-05-24 | 2008-05-14 | 因勒纪汽车***研究公司 | Clapet pour circuit de mise a l'air d'un reservoir a liquide |
| US20070193561A1 (en) * | 2006-02-13 | 2007-08-23 | Eaton Corporation | Double shut-off refueling valve |
| US20080149193A1 (en) * | 2006-12-22 | 2008-06-26 | Eaton Corporation | Vent valve |
| EP2514621A1 (en) * | 2009-12-17 | 2012-10-24 | Nifco Inc. | Fuel tank valve device |
| US20110186149A1 (en) * | 2010-02-02 | 2011-08-04 | Kyosan Denki Co., Ltd. | Fill-up control valve device |
| CN102251891A (en) * | 2011-07-20 | 2011-11-23 | 重庆润通动力有限公司 | Fuel oil tank air vent valve |
| CN103306867A (en) * | 2013-06-25 | 2013-09-18 | 苏州圆能动力科技有限公司 | Anti-dumping valve |
| CN203412684U (en) * | 2013-06-25 | 2014-01-29 | 苏州圆能动力科技有限公司 | Anti-dumping valve |
| CN203488288U (en) * | 2013-06-25 | 2014-03-19 | 苏州圆能动力科技有限公司 | Anti-dumping valve equipped with isolation cylinder |
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Application publication date: 20130925 |