CN106382170A - Internal gradient valve having automatic sealing position adjusting function - Google Patents
Internal gradient valve having automatic sealing position adjusting function Download PDFInfo
- Publication number
- CN106382170A CN106382170A CN201610950376.8A CN201610950376A CN106382170A CN 106382170 A CN106382170 A CN 106382170A CN 201610950376 A CN201610950376 A CN 201610950376A CN 106382170 A CN106382170 A CN 106382170A
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- CN
- China
- Prior art keywords
- valve
- float
- slope
- valve body
- built
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
- F02M25/0836—Arrangement of valves controlling the admission of fuel vapour to an engine, e.g. valve being disposed between fuel tank or absorption canister and intake manifold
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/0076—Details of the fuel feeding system related to the fuel tank
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
- Float Valves (AREA)
Abstract
The invention discloses an internal gradient valve having an automatic sealing position adjusting function. The gradient valve comprises a bonnet, a stop disk, a valve body, a float and a base; a gas outlet is formed in the top end of the valve body; the stop disk is arranged at the gas outlet; a groove in the bottom end of the valve body and a flange at the upper end of the base are connected in an assembled manner; a spring seat for mounting a spring is arranged in the middle of the bottom of the base; the spring is used for supporting the float; a second through hole is formed in the middle of the spring seat, and first through holes are formed in the edge of the spring seat; a flange at the outer part of the valve body and a groove in the bottom end of the bonnet are connected in an assembled manner; a sealing ring is arranged in a groove in the upper part of the valve body; a flange at the top end of the valve body and a groove in the lower end of a support frame are connected in an assembled manner; a groove adopting a wedge-shaped structure and a flange of a buckle are connected in an assembled manner; and one end of a membrane is fixed on the float. With the gradient valve, penetrating leakage of oil and gas molecules can be reduced, and meanwhile, the machining cost of an oil tank can be reduced; and through cooperation of wedge-shaped structures, oil in the oil tank can be prevented from leaking when a car is turned over or inclined.
Description
Technical field
The invention belongs to the retracting device field of onboard gasoline steam, more particularly, to one kind have self-adjusting seal position work(
The built-in slope valve of energy.
Background technology
For solving the pollution problem of refueling process intermediate fuel oil discharge of steam, the most of installation of domestic car now is activity
The fuel steam discharge control device of canister formula, its weak point be can not control volume read-out number, nor control refuel
During gasoline vapor discharge, thus easily causing charcoal canister " overload ".So there being slope in vehicle-mounted oil vapor recovery device
Bottom valve, quantity control valve etc..Slope valve is normally close valve, and cooperation quantity control valve uses, when quantity control valve works, slope valve
It is closed, maintain the pressure in fuel tank；When the float in slope valve rises to sealing station, slope valve is no longer arranged
Gas.When vehicle rollover, because the density ratio fluid of float is big, float first cuts out venthole, and slope valve is closed, and fluid will not lead to
Cross slope valve and leak out fuel tank.
The external patent with regard to slope valve has much, and United States Patent (USP) US11523012 proposes a kind of slope valve, outside valve body
Carry a fluid intake and a fluid issuing on shell, valve seat comprises a fluid issuing of valve body, float is placed in valve body
Interior and can move axially, seal member leans against the exit of valve seat for reaching the purpose of sealing, when valve is in open shape
During state, seal member departs from from valve seat, and fluid intake connects with fluid issuing.United States Patent (USP) US10807145 proposes one kind
Slope valve, this slope valve comprises a basic valve and an additional valve to pressure-responsive, and two valves have been placed in exhaust outlet
In the valve body of air inlet, and there is dividing plate between basic valve and additional valve；Basic valve and additional valve are worked in coordination the blocking-up gradient
Fluid motion between valve fluid inlet and outlet.But slope valve is operationally, in the case of high flow rate, the working condition of valve is difficult to
Ensure, especially in vehicle rollover, sealing effectiveness is not good.In addition, some slope valves are mounted to outside fuel tank, although the material of valve
Material uses macromolecular material, but oil gas molecule still can pass through valve macromolecular material gap permeable so that oily
The effect on driving birds is not good that gas reclaims.
Content of the invention
In order to overcome the shortcomings of above-mentioned activated carbon pot type fuel-oil vaporization controlling device commonly used in the prior art, the present invention carries
A kind of built-in slope valve with self-adjusting seal position functions, the evaporation row of energy effective control refueling process intermediate fuel oil are supplied
Put.
The present invention employs the following technical solutions：
A kind of built-in slope valve with self-adjusting seal position functions, including valve gap, block plate, valve body, float and bottom
Seat,
Described top end of the valve body centre position is provided with venthole, and described block plate is placed in above venthole, and block plate one side is used for
The pressure in fuel tank is maintained, on the other hand, when tank pressure value drastically changes, block plate rises, venthole in refueling process
Open a part of oil gas in discharge fuel tank；The wedge shape structure of described venthole lower end is joined with the wedge shape structure on float top
Close it is ensured that sealing effectiveness；The groove of described valve body bottom and the flange assembly connection of base upper end, described base bottom interposition
Install the spring-loaded spring abutment of peace, in order to support float, the centre position of described spring abutment is provided with the second through hole, edge to described spring
Place is provided with N number of first through hole, and N is even number；Flange outside described valve body and the groove assembly connection of valve gap bottom；Described valve body
It is provided with sealing ring in the groove on top, for the passage between sealed valve cap and valve body, block gas circulation；In the middle part of described valve gap
It is provided with groove, for being installed on built-in slope valve in fuel tank；The flange of described top end of the valve body is filled with the groove of support lower end
Join connection, described support is used for limiting the distance of block plate movement during built-in slope valve upset；
The groove of wedge shape structure on described float top and the flange assembly connection of buckle, realize one end of diaphragm is solid
It is scheduled on float, described diaphragm is completely covered the surface of the wedge shape structure on float top.
In such scheme, described valve gap is mounted on fuel tank internal with the steam vent on valve gap；The external activated carbon of steam vent
Tank, for absorbing the oil gas discharged in fuel tank.
In such scheme, the gradient phase of the wedge shape structure of described venthole lower end and the wedge shape structure on float top
When, gradient is 1:10-1:Between 12.
In such scheme, the wedge shape structure on described float top and diaphragm exist than steam vent in the projected area of horizontal plane
The projected area of horizontal plane is big.
In such scheme, described buckle, diaphragm, float and spring are placed in lower valve chamber.
In such scheme, described block plate is placed in valve chamber.
In such scheme, described venthole is placed between valve chamber and lower valve chamber.
In such scheme, the maximum length with diameter greater than steam vent of described block plate, the diameter of block plate is interior with upper valve chamber
The ratio in footpath is 0.8-0.85.
In such scheme, the height of described support is more than the depth of upper valve chamber, support straight with diameter greater than block plate
Footpath.
Beneficial effects of the present invention are：The built-in slope valve of the present invention is all installed in fuel tank, can reduce oil gas molecule
Go out fuel tank from the infiltration leakage between the material molecule of slope valve, slope valve is installed on fuel tank internal simultaneously, fuel tank can be reduced
Procedure of processing, reduce fuel tank processing cost.The structure of the wedge shape of the wedge shape structure on float top and venthole lower end
Cooperation, when tilting of automobile or when float axis and valve body center axis deviation are too big, due under float top and venthole
The wedge shape structural fall at end quite, can make the wedge structure on float top slide along the wedge shape structure on valve body and adjust
To optimal seal position, with the use of diaphragm so that sealing effectiveness is more preferable.
Brief description
Fig. 1 is a kind of structural representation of the built-in slope valve with self-adjusting seal position functions；
Fig. 2 is the enlarged drawing of I in Fig. 1.
In figure：1- valve gap；2- support；3- block plate；4- sealing ring；5- valve body；6- buckle；7- diaphragm；8- float；9- bullet
Spring；10- base；A- steam vent；The upper valve chamber of b-；E- lower valve chamber；F- venthole；H- first through hole；G- second through hole；M- groove.
Specific embodiment
With reference to the accompanying drawings and detailed description the present invention is described in further detail.
Referring to accompanying drawing 1, a kind of built-in slope valve with self-adjusting seal position functions, including valve gap 1, block plate 3, valve body
5th, float 8 and base 10, valve gap 1 is mounted on fuel tank internal with the steam vent a on valve gap 1；The external activated carbon of steam vent a
Tank, for absorbing the oil gas discharged in fuel tank；
Valve body 5 top centre position is provided with venthole f, and described block plate 3 is placed in above venthole f, and block plate 3 one aspect is used for
The pressure in fuel tank is maintained, on the other hand, when tank pressure value drastically changes, block plate 3 rises discharges oil in refueling process
A part of oil gas in case；The wedge shape structure on the wedge shape structure of venthole f lower end and float 8 top (can be in inclination of vehicle
When, or the center line of spring 9 and float 8 center line guarantee sealing when deviateing too big when built-in slope valve works)
Cooperation, the wedge shape structure on float 8 top is suitable with the gradient of the wedge shape structure of venthole f lower end, and gradient is 1:10-1:12
Between, the present invention preferably 1:10；The groove of valve body 5 bottom and the flange assembly connection of base 10 upper end, in the middle of base 10 bottom
Position is provided with the spring abutment installing spring 9, and in order to support float 8, the centre position of spring abutment is provided with the second through hole g, edge to spring 9
It is provided with four first through holes h being arranged radially；Flange outside valve body 5 and the groove assembly connection of valve gap 1 bottom；Valve body
It is provided with sealing ring 4 in the groove on 5 tops, for the passage between sealed valve cap 1 and valve body 5, block gas circulation；In valve gap 1
Portion is provided with groove m, for being installed on built-in slope valve in fuel tank；The flange on valve body 5 top is filled with the groove of support 2 lower end
Join connection, support 2 is used for limiting the distance of block plate 3 movement during built-in slope valve upset；
The groove of wedge shape structure on float 8 top and the flange assembly connection of buckle 6, realize one end of diaphragm 7 is solid
It is scheduled on float 8, diaphragm 7 (surrounding has flange it is ensured that sealing effectiveness) is completely covered the table of the wedge shape structure on float 8 top
Face, the wedge shape structure on float 8 top and diaphragm 7 horizontal plane projected area than venthole f horizontal plane projected area
Greatly.
Block plate 3 is placed in valve chamber b, and buckle 6, diaphragm 7, float 8 and spring 9 are placed in lower valve chamber e, and venthole f is placed in
Between upper valve chamber b and lower valve chamber e；The external diameter of float 8 is less than the internal diameter of lower valve chamber e；Block plate 3 with diameter greater than venthole f
Long length, the diameter of block plate 3 is 0.8-0.85 with the ratio of the internal diameter of upper valve chamber b, and the present invention is preferably 0.84；The height of support 2
The depth more than upper valve chamber b for the degree is it is ensured that block plate 3 is without departing from upper valve chamber e；The diameter with diameter greater than block plate 3 of support 2.
A kind of course of work of the built-in slope valve with self-adjusting seal position functions：
The built-in slope valve of the present invention is normally close valve, and that is, in refueling process, the block plate 3 of slope valve is pressed against out because of gravity
Pore f upper end, maintains the certain gas pressure of fuel tank, the now steam vent a of slope valve and first through hole h and the second through hole g
Between do not connect.Refuel and continue, the pressure in fuel tank persistently increases, oil gas can pass sequentially through first through hole h on base, second lead to
Upper valve chamber b is led to from venthole f in gap between hole g and float 8 and lower valve chamber's e inwall, when tank pressure reaches necessarily
During value, the block plate 3 of slope valve rises in the presence of being subject to tank pressure and the difference of fuel tank outside atmospheric pressure, and venthole f opens,
Oil gas flows in charcoal canister through venthole f, then through steam vent a, makes the change of oily loading pressure gentle.Supported frame
The restriction of 2 top surfaces, will not leave support 2 after block plate 3 moves, and prevent block plate 3 from deviateing venthole f.When automobile fuel filler amount reaches
During predetermined value, now refuel into fuel tank again, inside and outside fuel tank, the pressure differential of gas continues to increase, when air pressure difference is more than
During 0.003MPa, float 8 rises, and closes venthole f, and slope valve is closed.When automobile overturns, the density because of float 8 is more than combustion
The density of oil, float 8 can be pressed on venthole f under gravity, thus disconnects the main channel of slope valve, thus closing
Slope valve, it is to avoid leaking gasoline in fuel tank during overturning.When float 8 axle center occurs to deviate, due to the wedge on float 8 and valve body 5
Shape venthole gradient quite, can make the wedge structure on float 8 slide along the wedge shape air outlet hole structure on valve body 5, cooperation
Using diaphragm 7 so that sealing effectiveness is more preferable.
Above a kind of built-in slope valve with self-adjusting seal position functions provided by the present invention is carried out in detail
Introduce, invention applies specific case is set forth to the principle of the present invention and embodiment, to be described, above
Described only presently preferred embodiments of the present invention, not in order to limit the present invention.All within the spirit and principles in the present invention
Any modification, equivalent and improvement of being made etc., should be included within the scope of the present invention.
Claims (9)
1. a kind of built-in slope valve with self-adjusting seal position functions it is characterised in that include valve gap (1), block plate (3),
Valve body (5), float (8) and base (10),
Described valve body (5) top centre position is provided with venthole (f), and described block plate (3) is placed in above venthole (f), block plate (3)
On the one hand it is used in refueling process, maintaining the pressure in fuel tank, on the other hand, when tank pressure value drastically changes, block plate
(3) rise and discharge a part of oil gas in fuel tank；The wedge shape structure of described venthole (f) lower end and the wedge shape on float (8) top
Shape respective outer side edges are it is ensured that sealing effectiveness；The groove of described valve body (5) bottom and the flange assembly connection of base (10) upper end, institute
State base (10) bottom centre position and be provided with the spring abutment installing spring (9), described spring (9) is in order to support float (8), described spring
The centre position of seat is provided with the second through hole (g), edge is provided with N number of first through hole (h), and N is even number；Described valve body (5) is outside
Flange and valve gap (1) bottom groove assembly connection；It is provided with sealing ring (4), for close in the groove on described valve body (5) top
Passage between envelope valve gap (1) and valve body (5), blocks gas circulation；It is provided with groove (m), for will be interior in the middle part of described valve gap (1)
Put slope valve to be installed in fuel tank；The flange on described valve body (5) top and the groove assembly connection of support (2) lower end, described
Support (2) is used for limiting the distance of block plate (3) movement during built-in slope valve upset；
The groove of wedge shape structure on described float (8) top and the flange assembly connection of buckle (6), realize diaphragm (7)
One end is fixed on float (8), and described diaphragm (7) is completely covered the surface of the wedge shape structure on float (8) top.
2. a kind of built-in slope valve with self-adjusting seal position functions according to claim 1 is it is characterised in that institute
State valve gap (1) and be mounted on fuel tank internal with the steam vent (a) on valve gap (1)；The external charcoal canister of steam vent (a), for inhaling
Receive the oil gas discharged in fuel tank.
3. a kind of built-in slope valve with self-adjusting seal position functions according to claim 1 is it is characterised in that institute
The wedge shape structure stating venthole (f) lower end is suitable with the gradient of the wedge shape structure on float (8) top, and gradient is 1:10-1:
Between 12.
4. a kind of built-in slope valve with self-adjusting seal position functions according to claim 1 is it is characterised in that institute
State the wedge shape structure on float (8) top and diaphragm (7) horizontal plane projected area than steam vent (f) horizontal plane projection
Area is big.
5. a kind of built-in slope valve with self-adjusting seal position functions according to claim 1 is it is characterised in that institute
State buckle (6), diaphragm (7), float (8) and spring (9) to be placed in lower valve chamber (e).
6. a kind of built-in slope valve with self-adjusting seal position functions according to claim 1 is it is characterised in that institute
State block plate (3) to be placed in valve chamber (b).
7. a kind of built-in slope valve with self-adjusting seal position functions according to claim 5 or 6, its feature exists
In described venthole (f) is placed between valve chamber (b) and lower valve chamber (e).
8. a kind of built-in slope valve with self-adjusting seal position functions according to claim 6 is it is characterised in that institute
State the maximum length with diameter greater than steam vent (f) of block plate (3), the diameter of block plate (3) and the ratio of the internal diameter of upper valve chamber (b) are
0.8-0.85.
9. a kind of built-in slope valve with self-adjusting seal position functions according to claim 6 is it is characterised in that institute
The height stating support (2) is more than the depth of upper valve chamber (b), the diameter with diameter greater than block plate (3) of support (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610950376.8A CN106382170A (en) | 2016-10-26 | 2016-10-26 | Internal gradient valve having automatic sealing position adjusting function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610950376.8A CN106382170A (en) | 2016-10-26 | 2016-10-26 | Internal gradient valve having automatic sealing position adjusting function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106382170A true CN106382170A (en) | 2017-02-08 |
Family
ID=57958316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610950376.8A Pending CN106382170A (en) | 2016-10-26 | 2016-10-26 | Internal gradient valve having automatic sealing position adjusting function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106382170A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109023304A (en) * | 2017-06-12 | 2018-12-18 | 北京北方华创微电子装备有限公司 | A kind of admission gear |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4770201A (en) * | 1986-08-01 | 1988-09-13 | Aran Engineering Development Ltd. | Fluid flow valve |
| US5313977A (en) * | 1992-11-12 | 1994-05-24 | G. T. Products, Inc. | Fluid-responsive vent control valve with peel-away opening action |
| US5738132A (en) * | 1995-01-25 | 1998-04-14 | Raviv Precision Injection Molding, Israeli, Co. | Roll over vent valve |
| CN101332769A (en) * | 2008-07-24 | 2008-12-31 | 江苏大学 | Vehicle-mounted fuel vapor recovery device and method |
| CN100455862C (en) * | 2005-11-08 | 2009-01-28 | 拉法尔A.C.S.有限公司 | Roll-over valve |
| CN202451322U (en) * | 2012-01-16 | 2012-09-26 | 重庆润通动力有限公司 | Vent valve installed on general gasoline engine fuel tank |
| CN206175100U (en) * | 2016-10-26 | 2017-05-17 | 江苏大学 | Built -in slope valve with sealed position of self -interacting function |
-
2016
- 2016-10-26 CN CN201610950376.8A patent/CN106382170A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4770201A (en) * | 1986-08-01 | 1988-09-13 | Aran Engineering Development Ltd. | Fluid flow valve |
| US5313977A (en) * | 1992-11-12 | 1994-05-24 | G. T. Products, Inc. | Fluid-responsive vent control valve with peel-away opening action |
| US5738132A (en) * | 1995-01-25 | 1998-04-14 | Raviv Precision Injection Molding, Israeli, Co. | Roll over vent valve |
| CN100455862C (en) * | 2005-11-08 | 2009-01-28 | 拉法尔A.C.S.有限公司 | Roll-over valve |
| CN101332769A (en) * | 2008-07-24 | 2008-12-31 | 江苏大学 | Vehicle-mounted fuel vapor recovery device and method |
| CN202451322U (en) * | 2012-01-16 | 2012-09-26 | 重庆润通动力有限公司 | Vent valve installed on general gasoline engine fuel tank |
| CN206175100U (en) * | 2016-10-26 | 2017-05-17 | 江苏大学 | Built -in slope valve with sealed position of self -interacting function |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109023304A (en) * | 2017-06-12 | 2018-12-18 | 北京北方华创微电子装备有限公司 | A kind of admission gear |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170208 |