CN201568174U - Dump valve - Google Patents
Dump valve Download PDFInfo
- Publication number
- CN201568174U CN201568174U CN2009202446882U CN200920244688U CN201568174U CN 201568174 U CN201568174 U CN 201568174U CN 2009202446882 U CN2009202446882 U CN 2009202446882U CN 200920244688 U CN200920244688 U CN 200920244688U CN 201568174 U CN201568174 U CN 201568174U
- Authority
- CN
- China
- Prior art keywords
- valve seat
- valve
- spool
- orifice
- tipping
- Prior art date
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
Abstract
The utility model discloses a dump valve. The dump valve comprises a valve seat, a valve core, a steel ball and a rear cover; the valve seat is provided with a displacement hole and a stepped hole, wherein the displacement hole is positioned at the upper end of the valve seat, and the stepped hole is formed at the lower end of the valve seat; the valve core is positioned in the stepped hole of the valve seat; the steel ball is positioned in the spherical surface of the rear cover; and the rear cover is riveted with the valve seat. The dump valve in the utility model has the advantages of smaller size and reliable operation.
Description
Technical field
The utility model relates to a kind of valve, particularly a kind of Tipping valve.
Background technique
Requirement according to GB14761.3 standard (the GB14761.3 standard is the fuel evaporation pollutant emission standard of gasoline car), gasoline car need be installed fuel evaporation pollutant control system, and Tipping valve has important effect in said system, concrete effect is as follows: one, balance low pressure: produce negative pressure owing to extract fuel oil out with pump, for balance pressure, with the reverse order input air, promptly provide fresh air to fuel tank by air-strainer on the charcoal filter (filter screen) and charcoal filter.Two, eliminate overvoltage: because fuel-firing preheating produces overvoltage, the gas that produces in the fuel tank flows into charcoal filter through Tipping valve and outlet pipe.Three, roll-over: if vehicle is in the above oblique position of 45 degree (may or topple); the roll-over valve will seal relief opening; therefore; for example at vehicle to lopsidedness or when overturning; do not have fuel oil to overflow, can eliminate safe hidden trouble like this and environmental pollution by charcoal filter.By above-mentioned 3 concrete effects as can be known, Tipping valve must possess following three conditions: the flow that, enough gasoline vapors are arranged under certain pressure; Two, good sealing property is arranged when tilting more than 45 degree or being inverted fully; Three, in order to adapt to the more and more stricter requirement of Abgasgesetz, oil-fired system should reduce fuel tank opening and joint quantity as far as possible, thereby requires satisfying under the prerequisite of function, reduces volume as far as possible and makes system that enough installing spaces be arranged.But the volume of existing Tipping valve is excessive, job insecurity, and can not satisfy above-mentioned three conditions.
The model utility content
Technical problem to be solved in the utility model provides a kind of Tipping valve, and its volume is less, and reliable operation.
For solveing the technical problem, the utility model provides a kind of Tipping valve, it is characterized in that, it comprises valve seat, spool, steel ball and bonnet, and valve seat has exhaust metering-orifice and step hole, and the exhaust metering-orifice is positioned at the upper end of valve seat, step hole is positioned at the lower end of valve seat, spool is arranged in the step hole of valve seat, and steel ball is arranged in the sphere of bonnet, bonnet and valve seat riveted joint.
Preferably, described valve seat also has the vent and the step conical surface, and vent is positioned on the step conical surface.
Preferably, described exhaust metering-orifice and step hole are communicated with.
Preferably, described spool has a conical surface, and the exhaust metering-orifice is provided with a rounding, and spool is by its conical surface and this rounding and air displacement hole circle sliding fit.
Preferably, the lower end of described valve seat is shaped as hemisphere.
Positive progressive effect of the present utility model is: the utility model Tipping valve simple in structure, volume is little, and is easy to manufacture, and reliable operation.
Description of drawings
Fig. 1 is the blast structural representation of the utility model Tipping valve.
Fig. 2 is the composite structure schematic representation of the utility model Tipping valve.
Fig. 3 is the structural representation of valve seat in the utility model.
Embodiment
Lift a preferred embodiment below, and come the clearer the utility model that intactly illustrates in conjunction with the accompanying drawings.
As shown in Figure 1 to Figure 3, the utility model Tipping valve comprises valve seat 1, spool 2, steel ball 3 and bonnet 4, valve seat 1 has exhaust metering-orifice 11, step hole 12, the vent 13 and the step conical surface 14, exhaust metering-orifice 11 and step hole 12 are communicated with, exhaust metering-orifice 11 is positioned at the upper end of valve seat 1, step hole 12 is positioned at the lower end of valve seat 1, the lower end of valve seat 1 is shaped as hemisphere 15, vent 13 is positioned on the step conical surface 14, spool 2 is arranged in the step hole 12 of valve seat 1, spool 2 has a conical surface 21, the conical surface 21 cooperates exhaust and the sealing function of realizing Tipping valve with exhaust metering-orifice 11, steel ball 3 is arranged in the sphere of bonnet 4, and bonnet 4 and valve seat 1 riveted joint make all component in conjunction with as a whole like this.
Because exhaust metering-orifice, step hole and one that valve seat 1 adopts are injection molded, effectively guaranteed the coaxality of step hole and exhaust metering-orifice, add the degree of depth of the maximum opening travel of spool 2 less than step hole, effectively guaranteed the spool 2 coaxial and guiding with the exhaust metering-orifice of valve seat 1 relatively, the lower end of valve seat 1 is shaped as hemisphere, it is stressed all the time to spool 2 one sides when tilting more than 45 degree and overturning to help steel ball 3, guarantee that effectively the exhaust metering-orifice that promotes spool 2 and valve seat 1 by steel ball 3 gravity is sealed and matched, realize stoping fuel oil to flow out outside the fuel tank.When Tipping valve is in the upright position, steel ball 3 is close to the internal surface of bonnet 4 all the time by himself gravity, spool 2 is close to the surface of steel ball 3 by self gravitation, the exhaust metering-orifice is opened fully, gasoline vapor from then on hole is discharged, thereby guarantees that effectively fuel tank communicates with atmosphere, realizes preventing overvoltage and balance low pressure, realize that under normal circumstances fuel-steam discharges fuel tank, add to combine and realize environmental protection and utilization again with charcoal filter.
Valve seat adopts plastic pouring to form, and the exhaust metering-orifice of valve seat designs and adjusts its diameter according to environmental protection standard (as the GB14761.3 standard etc.) and usage requirement, is generally 1.4-1.8mm and is advisable.The exhaust metering-orifice is used for discharging fuel tank gasoline vapor and compensation fuel tank vacuum, the exhaust metering-orifice is provided with a rounding at itself and spool cooperation place, spool is by its conical surface and this rounding and the sealing of air displacement hole circle sliding fit, and vent is used to suck fresh air and discharges gasoline vapor.Spool adopts copper turning to process, and the spool matching part is designed to conical surface form, the about 2.5-3 gram of whole spool weight.Owing to adopt copper material turning processing, easy processing, steady quality, reliable performance.Spool rear portion use steel ball promotion spool combines the realization tangent line with the rounding of exhaust metering-orifice and seals when tilting more than 45 degree or being inverted fully, steel ball has been realized any direction centering effect in conjunction with the hemispherical dome structure of valve seat lower end again, add spool and exhaust metering-orifice rounding tangent line combination, guaranteed the sealing effect when tilting more than 45 degree or being inverted fully more, steel ball weight adopts the 10-12 gram to be advisable.Bonnet is a steel ball according to the said structure mating parts, considers that again the stretching of the easy employing of assembling steel plate is made, and adopts pressure closing in riveted joint mode to assemble with valve seat.Again in four holes of sphere upper punch of bonnet as the passage of gasoline vapor and fresh air, to increase the inlet and outlet amount, the diameter in hole is in 2-2.5mm the best.Stroke when whole Tipping valve is opened fully is designed to 2.5-3mm, guarantees reliable operation.
The utility model Tipping valve is used for the fuel evaporation pollutant control system of gasoline car, is installed on the fuel oil pump assembly end cap, reaches the fuel evaporation pollutant of control gasoline car and the effect of balance fuel tank pressure in conjunction with charcoal filter again.And the general structure of the utility model Tipping valve is simple, and amount of parts is few, and volume can be accomplished less, goes for having reduced the opening of fuel tank effectively on the little fuel oil pump assembly end cap of installing space.
Though more than described embodiment of the present utility model, but those skilled in the art is to be understood that, these only illustrate, and under the prerequisite that does not deviate from principle of the present utility model and essence, can make numerous variations or modification to these mode of executions.Therefore, protection domain of the present utility model is limited by appended claims.
Claims (5)
1. Tipping valve, it is characterized in that, it comprises valve seat, spool, steel ball and bonnet, valve seat has exhaust metering-orifice and step hole, the exhaust metering-orifice is positioned at the upper end of valve seat, and step hole is positioned at the lower end of valve seat, and spool is arranged in the step hole of valve seat, steel ball is arranged in the sphere of bonnet, bonnet and valve seat riveted joint.
2. Tipping valve as claimed in claim 1 is characterized in that, described valve seat also has the vent and the step conical surface, and vent is positioned on the step conical surface.
3. Tipping valve as claimed in claim 1 is characterized in that, described exhaust metering-orifice and step hole are communicated with.
4. Tipping valve as claimed in claim 1 is characterized in that, described spool has a conical surface, and the exhaust metering-orifice is provided with a rounding, and spool is by its conical surface and this rounding and air displacement hole circle sliding fit.
5. Tipping valve as claimed in claim 1 is characterized in that the lower end of described valve seat is shaped as hemisphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202446882U CN201568174U (en) | 2009-12-29 | 2009-12-29 | Dump valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202446882U CN201568174U (en) | 2009-12-29 | 2009-12-29 | Dump valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201568174U true CN201568174U (en) | 2010-09-01 |
Family
ID=42660460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202446882U Expired - Fee Related CN201568174U (en) | 2009-12-29 | 2009-12-29 | Dump valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201568174U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194523A (en) * | 2014-11-14 | 2016-12-07 | 现代自动车株式会社 | Diesel fuel EGR |
-
2009
- 2009-12-29 CN CN2009202446882U patent/CN201568174U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194523A (en) * | 2014-11-14 | 2016-12-07 | 现代自动车株式会社 | Diesel fuel EGR |
| CN106194523B (en) * | 2014-11-14 | 2019-12-03 | 现代自动车株式会社 | Diesel fuel recycling device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101629532A (en) | Method and device for controlling evaporative emission of automobile fuel | |
| CN102434328B (en) | Valve device of fuel tank | |
| CN201568174U (en) | Dump valve | |
| CN102109040A (en) | Rollover valve | |
| CN211203005U (en) | Slope discharge valve | |
| CN201330667Y (en) | Overturning valve assembly | |
| CN206592554U (en) | A kind of upset fluid stopping breather valve for automotive oil tank | |
| CN201729219U (en) | Motorcycle oil tank with breather valve | |
| CN202360246U (en) | Valve device of fuel tank | |
| CN101445050B (en) | Fuel tank cap and fuel tank port structure | |
| CN211764912U (en) | Air exhaust structure for national six-automobile fuel tank and fuel tank | |
| CN101191563A (en) | Negative one-way valve for liquid transmission pipeline | |
| CN211174391U (en) | Novel car large oil tank carbon tank assembly | |
| CN109399543A (en) | Fuel loading system | |
| CN110566700B (en) | Slope exhaust valve | |
| CN2811682Y (en) | Fuel tank cover | |
| CN111098704A (en) | Combined valve | |
| CN201694573U (en) | Manhole cover of light off-road fuel vehicle | |
| CN201604517U (en) | Fuel pump assembly for metal bracket | |
| CN101489816A (en) | Fuel container for a motor vehicle | |
| CN213116506U (en) | Electronic injection fuel pump assembly integrated with GVV valve and FLVV valve | |
| CN101839195B (en) | Membrane valve carbon canister | |
| CN202001145U (en) | Motorcycle splash-proof fuel evaporation system and motorcycle thereof | |
| CN201884150U (en) | Floating collection device for fuel vapor in fuel tank | |
| CN201841943U (en) | Oil-gas separator arranged outside oil tank |
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: 20100901 Termination date: 20151229 |
|
| EXPY | Termination of patent right or utility model |