CN203488288U - Anti-dumping valve equipped with isolation cylinder - Google Patents
Anti-dumping valve equipped with isolation cylinder Download PDFInfo
- Publication number
- CN203488288U CN203488288U CN201320365762.2U CN201320365762U CN203488288U CN 203488288 U CN203488288 U CN 203488288U CN 201320365762 U CN201320365762 U CN 201320365762U CN 203488288 U CN203488288 U CN 203488288U
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- China
- Prior art keywords
- valve
- pressure control
- isolating cylinder
- control valve
- ventilating hole
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Abstract
The utility model discloses an anti-dumping valve equipped with an isolation cylinder, wherein a valve cavity (B) is formed by connection between a valve body (1) and a valve base (2), a cover-shaped floater (3) is disposed above the valve base (2), a steel ball (4) which can be moved freely and can let the floater (3) move up and down inside the valve cavity (B) is placed between the floater (3) and the valve base (2), a rubber sealing ring (5) is embedded on the external wall of the valve body (1) and the installation face thereof is higher than the valve base (2). In addition, an isolation cylinder (23) is disposed on the external ring of the floater (3) and on the bottom of the valve base (2) in an upward extruded way. In the anti-dumping valve in the utility model, the isolation cylinder is disposed so that the anti-dumping valve will not be closed by air pressure no matter how high the pressure in an oil tank is, and the pressure in the oil tank is always kept in a normal scope during work with high safety.
Description
Technical field
The utility model relates to a kind of mechanical valve, is especially arranged on the vent valve that the anti-fuel oil on general gasoline engines fuel tank is toppled over.
Background technique
In prior art, be installed on the vent valve (as shown in Figure 1) on general gasoline engines fuel tank, by valve body, valve base sealing forms valve pocket, cavity top is provided with the first ventilating hole, this first ventilating hole is communicated with by a valve port with valve pocket, valve seat upper-end surface is provided with conic shaped, above valve seat, be provided with a bottle cap shape float, in the top outer of float, be provided with and coordinate the spool that can close the first ventilating hole with valve port, between float and valve seat, place a steel ball, when anti-dumping pressure control valve tilts to after several angle, steel ball moves and can make float move up and down along valve interior wall, the gapped gas that passes through between float and valve interior wall.
, there is following defect 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 when by overturning-preventing valve exhaust, because the resistance of air-flow can produce pressure reduction, the pressure of B district air pressure is much smaller than A district, and the active force that pressure reduction makes progress to float is larger, and extraction flow is larger, this pressure reduction is also larger, when pressure reduction is larger, will promote float and rise and to close anti-dumping pressure control valve, cause the fuel tank cannot release, have potential safety hazard.
2, between the valve body of anti-dumping pressure control valve and valve seat, adopt welding manner to connect, dimensional accuracy is difficult to control, and welding manufacturing efficiency is lower.
3, anti-dumping pressure control valve at the second ventilating hole of fuel tank internal the bottom in valve, position is low, easily immerses below fuel tank liquid level, the fuel oil of fuel tank internal can enter anti-dumping pressure control valve, causes unexpected leakage.
Model utility content
For deficiency of the prior art, the utility model provides a kind of anti-dumping pressure control valve that is provided with isolating cylinder, by Structure Improvement targetedly, has solved the security hidden trouble that anti-dumping pressure control valve is surprisingly closed.
A kind of anti-dumping pressure control valve that is provided with isolating cylinder, by valve body and valve seat, be connected to form valve pocket, 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 be longitudinally set in conic shaped; Above conic shaped, be provided with a lid shape float, in the top outer of float, be provided with and coordinate the spool that can close the first ventilating hole with valve port; Between float and conic shaped, place a steel ball, when anti-dumping pressure control valve tilts to after several angle, steel ball moves and can make float move up and down in valve pocket inside, on the outer wall of valve body, be embedded with rubber seal, the attachment face of described rubber seal is higher than valve seat, wherein, in the outer ring of float, by valve seat bottom, project upwards isolating cylinder is set.
Under the setting of said structure, between described isolating cylinder and valve body, form toroidal cavity, 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 at least set for better.
Further, described valve seat bottom arranges the liquid port that at least one size is less than the second ventilating hole size.
Further, between described valve body and valve seat, by elastic closing structure, connect.Such as, fastening hole is set on valve body, the fastening boss of phase embedding corresponding to fastening hole is set on valve seat.After valve body and valve seat are in place by elastic closing structure, can there is resiliently deformable in the elastic support pin on 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 utility model is:
Traditional anti-dumping pressure control valve is because the second ventilating hole is arranged on the bottom surface of valve seat, oil vapor in the fuel tank float of must flowing through from valve port discharge process, 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 oil vapor flow is larger, can cause anti-dumping pressure control valve surprisingly to close, and more 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 utility model, on valve seat, be provided with isolating cylinder, most air-flows can flow between valve body and isolating cylinder, between float and isolating cylinder, only has air-flow seldom, therefore fuel tank is when by overturning-preventing valve exhaust, and the pressure reduction in B district and A district is very little, and the active force that pressure reduction makes progress to float is very little, this power is much smaller than float gravity, therefore float can not make anti-dumping pressure control valve surprisingly cut out under pressure reduction.
That is, no matter how high tank pressure is, and anti-dumping pressure control valve can not closed by air pressure, during work, can all the time tank pressure be remained in a normal range (NR), safe.
Accompanying drawing explanation
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 utility model setting is provided with the mode of execution of isolating cylinder.
Fig. 6 is the side view of the anti-dumping pressure control valve based on Fig. 5.
Fig. 7 is B-B sectional view of the anti-dumping pressure control valve that is provided with isolating cylinder based on Fig. 6.
Fig. 8 is C-C sectional view of the anti-dumping pressure control valve that is provided with isolating cylinder based on Fig. 6.
Fig. 9 is the plan view of the anti-dumping pressure control valve that is provided with isolating cylinder based on Fig. 5.
Figure 10 is A-A sectional view of the anti-dumping pressure control valve that is provided with isolating cylinder based on Fig. 9.
Figure 11 is the worm's eye view of the anti-dumping pressure control valve that is provided with isolating cylinder based on Fig. 5.
Figure 12 is D-D sectional view of the anti-dumping pressure control valve that is provided with isolating cylinder based on Figure 11.
Figure 13 is the structural representation of the valve body of the anti-dumping pressure control valve based on Fig. 5.
Figure 14 is the structural representation of the valve seat of the anti-dumping pressure control valve based on Fig. 5.
Number in the figure explanation: 1. valve body, 11. first ventilating holes, 12. valve ports, 13. toroidal cavities, 14. fastening holes, 15. elastic support pin, 2. valve seats, 21. second ventilating holes, 22. conic shaped, 23. isolating cylinders, 24. liquid ports, 25. fasten boss, 3. float, 31. spools, 4. steel ball, 5. rubber seal, 6. fuel tank, A. float inner chamber, B. valve pocket.
Embodiment
Shown in Fig. 2, a kind of anti-dumping pressure control valve that is provided with isolating cylinder of the present utility model, 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 on conic shaped 22 is longitudinal, offer cross recess;
Above valve seat 2, arrange and cover shape float 3, in the top outer of float 3, be provided with and coordinate the spool 31 that can close the first ventilating hole with valve port 12, can be with sphere-contact between spool 31 and valve port 12, also can contact with hollows, line contact can guarantee the sealing that valve cuts out, though cone structure can guarantee in the situation that spool 31 has minor shifts still can active homing and with valve port 12 sealings;
Between float 3 and conic shaped 22, place a steel ball 4, when anti-dumping pressure control valve tilts to after several angle, steel ball 4 can move and can make float 3 move up and down along isolating cylinder 23 inwalls in conic shaped, valve seat 2 tops, between float 3 and conic shaped 22, the region at steel ball 4 places forms float inner chamber A; Here, the object that conic shaped 22 is set on valve seat 2 is: at anti-dumping pressure control valve, tilt to after several angle, make steel ball roll to drive float 3 to open and close vent valve along conic shaped;
Especially, in the outer ring of float 3, by valve seat 2 bottoms, project upwards isolating cylinder 23 is set.On valve seat 2, set up an isolating cylinder 23, float 3 is outside to be coordinated 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, gap between float 3 and isolating cylinder 23 becomes secondary channel, in the time of so can preventing that fuel tank extraction flow is larger, under differential pressure action, float 3 cuts out 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 at least set better.Between the inwall of the outer wall of isolating cylinder 23 and valve body 1, forming toroidal cavity 13, the first ventilating holes 11 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.
Between valve body 1 and valve seat 2, can adopt the form of welding to connect.During work, also can reach and all the time tank pressure be remained on to an effect in safety range, and have and prevent that fuel oil from passing through the effect of anti-dumping pressure control valve accidental release.
Shown in Fig. 3, the another kind of mode of execution of this anti-dumping pressure control valve, what take embodiment 3 is basis, and in being retained in valve, arrange on the basis of the structural design mode connecting with the form of welding between isolating cylinder 23, valve body 1 and valve seat 2, the second ventilating hole 21 can be arranged to the bottom of anti-dumping pressure control valve, during work, can also reach and all the time tank pressure be remained on to an effect in safety range.
Shown in Fig. 4, the another kind of mode of execution of this anti-dumping pressure control valve, take embodiment 2 as basis, at reservation isolating cylinder 23, the second ventilating hole 21, be arranged on the basis of the design bottom anti-dumping pressure control valve, between valve body 1 and valve seat 2, can connect by elastic closing structure, this kind of mode has and all the time tank pressure remained on to an effect in safety range.
In conjunction with shown in Fig. 5 to Figure 14, 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, between valve body 1 and valve seat 2, by elastic closing structure, connect.Such as, fastening hole 13 is set on valve body 1, on valve seat 2, be arranged at the fastening boss 25 that fastening hole is corresponding, and elastic support pin 15 be set so that fasten tightr.
While specifically using, vent valve mounting hole is set on fuel tank 6, 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 to side, and be exposed to the above space of pasta in fuel tank 6, fuel tank is when exhaust, oil vapor in 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 use 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 utility model.
In conjunction with shown in Fig. 6 to Figure 14, a kind of anti-dumping pressure control valve, on embodiment 1 architecture basics, the number of the second ventilating hole 21, liquid port 24, fastening hole 14, fastening boss 25 is all set to four, as a kind of mode of execution.
The above; it is only better case study on implementation of the present utility model; not the utility model is imposed any restrictions; every similar mode of any simple modification, change, employing of above embodiment being done according to the utility model essence substitutes and the variation of equivalent structure, all still belongs in the protection domain of technical solutions of the utility model.
Claims (10)
1. an anti-dumping pressure control valve that is provided with isolating cylinder, by valve body (1) and valve seat (2), be connected to form valve pocket (B), 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), in conic shaped (22) top, be provided with a lid shape float (3), in the top outer of float (3), be provided with and coordinate the spool (31) that can close the first ventilating hole (11) with valve port (12), between float (3) and conic shaped (22), place a steel ball (4), steel ball (4) can move freely and can make float (3) move up and down in valve pocket (B) inside, on the outer wall of valve body (1), be 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), by valve seat (2) bottom, project upwards and be 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, between the inwall of the outer wall of described isolating cylinder (23) and valve body (1), form toroidal cavity (13), described the first ventilating hole (11) is communicated with by this toroidal cavity (13) with the second ventilating hole (21).
4. according to the anti-dumping pressure control valve that is provided with isolating cylinder described in any one in claims 1 to 3, it 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 the anti-dumping pressure control valve that is provided with isolating cylinder described in any one in claim 1,2,3 or 5, it is characterized in that, between valve body (1) and valve seat (2), by elastic closing structure, connect.
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 described valve body (1), and valve seat (2) above 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, is also provided with for eliminating the elastic support pin (15) of matching gap between elastic buckles component structure on described valve seat (2).
9. according to the anti-dumping pressure control valve that is provided with isolating cylinder described in 1 in 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 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) is longitudinally provided with cross recess.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320365762.2U CN203488288U (en) | 2013-06-25 | 2013-06-25 | Anti-dumping valve equipped with isolation cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320365762.2U CN203488288U (en) | 2013-06-25 | 2013-06-25 | Anti-dumping valve equipped with isolation cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203488288U true CN203488288U (en) | 2014-03-19 |
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ID=50259126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320365762.2U Expired - Fee Related CN203488288U (en) | 2013-06-25 | 2013-06-25 | Anti-dumping valve equipped with isolation cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203488288U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103321798A (en) * | 2013-06-25 | 2013-09-25 | 苏州圆能动力科技有限公司 | Topping-preventive valve with separating barrel |
| CN104454269A (en) * | 2014-12-04 | 2015-03-25 | 苏州圆能动力科技有限公司 | Steel ball type fuel oil control valve |
| WO2022168676A1 (en) * | 2021-02-02 | 2022-08-11 | 株式会社パイオラックス | Valve device |
-
2013
- 2013-06-25 CN CN201320365762.2U patent/CN203488288U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103321798A (en) * | 2013-06-25 | 2013-09-25 | 苏州圆能动力科技有限公司 | Topping-preventive valve with separating barrel |
| CN104454269A (en) * | 2014-12-04 | 2015-03-25 | 苏州圆能动力科技有限公司 | Steel ball type fuel oil control valve |
| WO2022168676A1 (en) * | 2021-02-02 | 2022-08-11 | 株式会社パイオラックス | Valve device |
| JP7442698B2 (en) | 2021-02-02 | 2024-03-04 | 株式会社パイオラックス | valve device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140319 Termination date: 20190625 |
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| CF01 | Termination of patent right due to non-payment of annual fee |