CN104074646B - A kind of a kind of fuel tank of Ventilated anti-leakage oil tank cover and application thereof - Google Patents
A kind of a kind of fuel tank of Ventilated anti-leakage oil tank cover and application thereof Download PDFInfo
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- CN104074646B CN104074646B CN201410339514.XA CN201410339514A CN104074646B CN 104074646 B CN104074646 B CN 104074646B CN 201410339514 A CN201410339514 A CN 201410339514A CN 104074646 B CN104074646 B CN 104074646B
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Abstract
Fuel tank cap that a kind of vapor-permeable type is leakage-preventing and a kind of fuel tank of application thereof, including lid and oil tank body, oil tank body is provided with reservoir port, described lid lower end inner wall is provided with bulge loop, this cover cap is outside reservoir port, described bulge loop contacts with reservoir port, it is provided with valve core case between described reservoir port and lid top inner surface, it is provided with sealing gasket between described valve core case and reservoir port and forms sealing structure, it is provided with spool in described valve core case, one-way air inlet hole it is provided with in this spool, it is welded with cartridge cover bottom described valve core case, it is provided with through hole in this cartridge cover, described valve core case is provided with the ventilating groove given vent to anger aperture be connected inside and outside valve core case.The beneficial effects of the present invention is: use the fuel tank cap of a Ventilated anti-leakage, the inside and outside ventilation of fuel tank both can have been made smooth and easy, tank pressure is stable, again can when fuel tank is toppled over will not leakage of oil, improve the safety that fuel tank uses.
Description
Technical field
The present invention relates to technical field of engines, particularly a kind of fuel tank of a kind of Ventilated anti-leakage oil tank cover and application thereof.
Background technology
Fuel tank cap is for the reservoir port of closed fuel tank, and reservoir port is opened in fuel tank top and opening upwards, and reservoir port is tubular, and the female thread being provided with external screw thread and fuel tank cap on its external cylindrical surface screws mutually.The designing requirement of fuel tank cap is to ensure that fuel tank is intrinsic pressure consistent with external pressure, to ensure the normal supply of fuel oil, should breathe freely, and ensures that fuel tank is when rocking, tilt and be inverted test again, and dredge oil amount is in prescribed limit.
Miniature gasoline engine is mainly used as the supporting power of graden machine, graden machine is mainly used in Gardening Nursery, flowers, greenbelt, the pruning on lawn and the shape handles, in order to ensure the machine continuous operation in adverse circumstances, in fuel tank, must there is the structure being connected with external environment condition.Existing machine is in use, leakage oil condition often occurs, main cause is fuel tank at high frequency with when toppling over, the aperture of giving vent to anger of fuel from fuel tank lid leaks, existing problem is solved by measures such as filter screens, result not only increases the cost of machine, and effect neither be highly desirable.Not only can ensure that the normal supply of fuel oil therefore it provides a kind of but also be possible to prevent the fuel tank cap of fuel leakage just to become extremely important.
Summary of the invention
In order to solve above-mentioned the deficiencies in the prior art, the present invention provides a kind of permeability good and again can the fuel tank cap of anti-leak.
nullTo achieve these goals，A kind of Ventilated anti-leakage oil tank cover designed by the present invention，Including lid，Described lid lower end internal perisporium is provided with some first bulge loops，Circular cartridge cover it is provided with in described lid，Through hole one is offered in this cartridge cover，Described cartridge cover upper surface is provided with the first groove，Described first groove is connected with through hole one，Described cartridge cover is provided with the T-valve core print seat of annular flange flange one，Described flange one is provided with the T-shaped extending seat with annular flange flange two coaxial with valve core case away from one end of valve core case axis，The upper surface of described flange two contacts with lid top inner surface，Some the ventilating grooves communicated by flange two cylindrical are had with endoporus in described flange two，Described flange one extends second bulge loop coaxial with valve core case to valve core case axis direction，Described second bulge loop is provided with at least more than one aperture of giving vent to anger，The endoporus of described second bulge loop is embedded with spool，Described spool includes the spool top being coaxially disposed with the second bulge loop、In the middle part of spool and spool bottom，Described spool top is provided with the 3rd bulge loop，Described 3rd bulge loop can cover gives vent to anger aperture and forms sealing structure with the second bulge loop，The 4th bulge loop it is provided with in the middle part of described spool，Described 4th bulge loop can be against when spool is by jack-up and give vent to anger aperture under the inwall of axis direction，The width of the second groove formed between described 3rd bulge loop and the 4th bulge loop is more than the thickness of the second bulge loop，Described spool bottom can be embedded in the first groove，Described valve core inside is provided with through hole two，It is provided with one-way air inlet hole in described through hole two.
Further, the bottom internal perisporium of described through hole two is provided with the 5th bulge loop, and described one-way air inlet hole is positioned on the 5th bulge loop, facilitates the fixing of one-way air inlet hole.
Further, described first groove is arranged with the same axis of valve core case, is additionally provided with concave station outside described cartridge cover upper surface, and described valve core case is welded on concave station.By concave station, valve core case is welded in cartridge cover, it is possible to allow and between valve core case and cartridge cover, form good sealing structure.
Further, the one side that described lid contacts with flange two is provided with the 3rd groove with valve core case coaxial line, and the periphery wall of described 3rd groove is positioned at flange two away within axis one end.Lid sets the 3rd groove, is conducive on spool formation greater room, it is ensured that between lid and spool, have sufficiently large air pressure.
Further, described T-valve core print seat is one-body molded with T-shaped extending seat.Valve core case is one-body molded with extending seat, both ensure that use quality, and also ensure that through hole one turnover only by cartridge cover of the atmospheric pressure in the oil gas in fuel tank and the external world.
It is a further object of the present invention to provide a kind of fuel tank applying Ventilated anti-leakage oil tank cover, including oil tank body, described oil tank body upper end is provided with reservoir port, described reservoir port outer wall is provided with screw thread, described reservoir port is against the lower surface of flange two, is provided with sealing gasket between described reservoir port and flange two, and described sealing gasket one end contacts with extending seat, the other end is exposed at outside reservoir port and is positioned at above the first bulge loop, and described lid is contacted with reservoir port outer wall by the first bulge loop.By contacting between the first bulge loop with reservoir port outer wall thread, make lid that relative movement will not occur with reservoir port, and sealing gasket is positioned at above the first bulge loop, be conducive to stoping the first bulge loop to depart from reservoir port.
Further, the bottom internal perisporium of described through hole two is provided with the 5th bulge loop, and described one-way air inlet hole is positioned on the 5th bulge loop.
Further, described first groove is arranged with the same axis of valve core case, is additionally provided with concave station outside described cartridge cover upper surface, and described valve core case is welded on concave station.
Further, the one side that described lid contacts with flange two is provided with the 3rd groove with valve core case coaxial line, and the periphery wall of described 3rd groove is positioned at flange two away within axis one end.
Further, described T-valve core print seat is one-body molded with T-shaped extending seat.
Operation principle: when the pressure in fuel tank reaches certain value, oil gas is by the through hole one in cartridge cover, enter in the chamber of valve core case and spool and cartridge cover formation, it is then passed through the aperture of giving vent to anger on the second bulge loop, 3rd bulge loop on spool top is backed down by the oil gas reaching certain pressure value, now whole spool moves up, the 4th bulge loop in the middle part of spool is against below the second bulge loop, oil gas communicates with atmospheric pressure again through the ventilating groove in flange two and the gap between the first bulge loop and the screw thread of reservoir port outer wall, it is ensured that the safety of fuel tank.
When the engine operates, air enters, by the gap between the first bulge loop and the screw thread of reservoir port outer wall and the ventilating groove in flange two, the chamber that lid is formed with valve core case and spool, now due to the 3rd bulge loop on spool top will give vent to anger aperture cover and with the second convex ring for sealing, air cannot pass through aperture entrance fuel tank of giving vent to anger, enter in fuel tank only by the one-way air inlet hole arranged in the through hole two in spool, one-way air inlet hole can make gas only import but no export, thus ensureing the normal supply of the fuel oil of fuel tank, it is possible to make engine work.
When electromotor is toppled over or during high-frequency work, extraneous atmospheric pressure enters in the chamber of lid and valve core case and spool formation by ventilating groove, spool is formed a big pressure, under the effect of this pressure, making the 3rd bulge loop aperture of still giving vent to anger cover, the 3rd bulge loop cannot be ejected by the air in fuel tank, therefore forms certain air pressure in fuel tank, fuel oil is made to flow out, thus ensure that the safety of electromotor.
The fuel tank cap of a kind of Ventilated anti-leakage that the present invention obtains and a kind of fuel tank of application thereof, it has the technical effect that 1, uses this fuel tank cap, and the inside and outside ventilation of fuel tank both can have been made smooth and easy, and tank pressure is stable, again can fuel tank when toppling over will not leakage of oil, improve fuel tank use safety；2, easy for installation between fuel tank cap and fuel tank, it is possible to change lid and the sealing gasket of different model, it is possible to adapt to the fuel tank of different model, economical and practical.
Accompanying drawing explanation
Fig. 1 is the structure sectional view of a kind of Ventilated anti-leakage oil tank cover of the present invention；
A kind of structure sectional view when Fig. 2 is duty of the present invention；
Another kind of structure sectional view when Fig. 3 is duty of the present invention；
Fig. 4 is the structure sectional view of valve core case in one embodiment of the invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further described.
nullSuch as Fig. 1、Shown in Fig. 4，A kind of Ventilated anti-leakage oil tank cover provided by the invention，Including lid 1，Described lid 1 lower end internal perisporium is provided with some first bulge loops 2，It is provided with in described lid 1 and the circular cartridge cover 3 of the same axis of lid 1，Through hole 1 is offered in the middle of this cartridge cover 3，Described cartridge cover 3 upper surface is provided with first groove 5 coaxial with through hole 1，Described first groove 5 is connected with through hole 1，It is provided with concave station 21 outside described cartridge cover 3 upper surface，Described concave station 21 is welded with the T-valve core print seat 7 with annular flange flange one 6 coaxial with through hole 1，Described flange 1 is provided with the T-shaped extending seat 9 with annular flange flange two 8 coaxial with valve core case 7 away from one end of valve core case 7 axis，Described T-shaped extending seat 9 is one-body molded with described T-valve core print seat 7，The upper surface of described flange 28 contacts with lid 1 top inner surface，Four ventilating grooves 10 communicated by flange two cylindrical are had with endoporus in described flange 28，Described flange 1 extends second bulge loop 11 coaxial with valve core case 7 to valve core case 7 axis direction，Described second bulge loop 11 is provided with equally distributed four apertures 12 of giving vent to anger，The endoporus of described second bulge loop 11 is embedded with spool 13，Described spool 13 includes the spool top 14 being coaxially disposed with the second bulge loop 11、In the middle part of spool 15 and spool bottom 16，Described spool top 14 is provided with the 3rd bulge loop 17 of downward-sloping setting，Described 3rd bulge loop 17 can cover gives vent to anger aperture 12 and forms sealing structure with the second bulge loop 11，In the middle part of described spool, 15 are provided with the 4th bulge loop 18 arranged that is inclined upwardly，Described 4th bulge loop 18 can be against when spool 13 is by jack-up and give vent to anger aperture 12 under the inwall of axis direction，The width of the second groove formed between described 3rd bulge loop 17 and the 4th bulge loop 18 is more than the thickness of the second bulge loop 11，Described spool bottom 16 can be embedded in the first groove 5，Described spool 13 is internal is provided with through hole 2 19，The bottom internal perisporium of described through hole 2 19 is provided with the 5th bulge loop 20，Described 5th bulge loop 20 is provided with one-way air inlet hole，Ensure that air can only enter in fuel tank in this one-way air inlet hole，And the oil gas in fuel tank will not escape into valve body from one-way air inlet hole，One-way air inlet hole belongs to a kind of prior art，Do not repeat them here.
Described lid 1 top inner surface is provided with and the 3rd groove 22 of valve core case 7 coaxial line, and the periphery wall of described 3rd groove 22 is positioned at flange 28 away within axis one end.Lid 1 sets the 3rd groove 22, is conducive to being formed over greater room at spool 13, it is ensured that between lid 1 and spool 13, have sufficiently large air pressure.
As shown in Fig. 1,2,3 and 4, the invention still further relates to a kind of fuel tank using above-mentioned Ventilated anti-leakage oil tank cover, including oil tank body 23, described oil tank body 23 upper end is provided with reservoir port 24, described reservoir port 24 outer wall is provided with screw thread, described reservoir port 24 is against the lower surface of flange 28, it is provided with sealing gasket 25 between described reservoir port 24 and flange 28, described sealing gasket 25 one end contacts with extending seat 9, the other end is exposed at outside reservoir port 24 and is positioned at above the first bulge loop 2, and described lid 1 is contacted with reservoir port 24 outer wall by the first bulge loop 2.By contacting between the first bulge loop 2 with reservoir port 24 outer wall thread, make lid 1 that relative movement will not occur with reservoir port 24, and sealing gasket 25 is positioned at above the first bulge loop 2, be conducive to stoping the first bulge loop 2 to depart from reservoir port.
When the pressure in fuel tank 23 reaches certain value, oil gas is by the through hole 1 in cartridge cover 3, enter in the chamber of valve core case 7 and spool 13 and cartridge cover 3 formation, be then passed through on the second bulge loop 11 four give vent to anger aperture 12, 3rd bulge loop 17 on spool top 14 is backed down by the oil gas reaching certain pressure value, now whole spool 13 moves up, in the middle part of spool, the 4th bulge loop 18 of 15 is against below the second bulge loop 11, oil gas communicates with atmospheric pressure again through the gap between ventilating groove 10 and the first bulge loop 2 and the screw thread of reservoir port 24 outer wall in flange 28, ensure the safety of fuel tank, as shown in Figure 2.
When the engine operates, air enters 10 by the gap between the screw thread of the first bulge loop 2 and reservoir port 24 outer wall and the ventilating groove in flange 28 and enters lid 1, valve core case 7, the chamber that extending seat 9 and spool 13 are formed, now owing to the 3rd bulge loop 17 on spool top 14 aperture 12 of giving vent to anger covers and seals with the second bulge loop 11, air cannot enter fuel tank 24 by aperture 12 of giving vent to anger, enter in fuel tank 24 only by the one-way air inlet hole arranged in the through hole 2 19 in spool 13, one-way air inlet hole can make gas only import but no export, thus ensureing the normal supply of the fuel oil of fuel tank, engine work can be made, as shown in Figure 3.
When electromotor is toppled over or during high-frequency work, extraneous atmospheric pressure enters in the chamber that lid 1, valve core case 7, extending seat 9 and spool 13 are formed by ventilating groove 10, spool 13 is formed a big pressure, under the effect of this pressure, making the 3rd bulge loop 17 aperture 12 of still giving vent to anger cover, the 3rd bulge loop 17 cannot be ejected by the air in fuel tank 24, therefore forms certain air pressure in fuel tank, fuel oil is made to flow out, thus ensure that the safety of electromotor.
Claims (10)
- null1. a Ventilated anti-leakage oil tank cover，Including lid，Described lid lower end internal perisporium is provided with some first bulge loops，It is characterized in that: in described lid, be provided with circular cartridge cover，Through hole one is offered in this cartridge cover，Described cartridge cover upper surface is provided with the first groove，Described first groove is connected with through hole one，Described cartridge cover is provided with the T-valve core print seat of annular flange flange one，Described flange one is provided with the T-shaped extending seat with annular flange flange two coaxial with valve core case away from one end of valve core case axis，The upper surface of described flange two contacts with lid top inner surface，Some the ventilating grooves communicated by flange two cylindrical are had with endoporus in described flange two，Described flange one extends second bulge loop coaxial with valve core case to valve core case axis direction，Described second bulge loop is provided with at least more than one aperture of giving vent to anger，The endoporus of described second bulge loop is embedded with spool，Described spool includes the spool top being coaxially disposed with the second bulge loop、In the middle part of spool and spool bottom，Described spool top is provided with the 3rd bulge loop，Described 3rd bulge loop can cover gives vent to anger aperture and forms sealing structure with the second bulge loop，The 4th bulge loop it is provided with in the middle part of described spool，Described 4th bulge loop can be against when spool is by jack-up and give vent to anger aperture under the inwall of axis direction，The width of the second groove formed between described 3rd bulge loop and the 4th bulge loop is more than the thickness of the second bulge loop，Described spool bottom can be embedded in the first groove，Described valve core inside is provided with through hole two，It is provided with one-way air inlet hole in described through hole two.
- 2. Ventilated anti-leakage oil tank cover according to claim 1, it is characterised in that: the bottom internal perisporium of described through hole two is provided with the 5th bulge loop, and described one-way air inlet hole is positioned on the 5th bulge loop.
- 3. the leakage-preventing fuel tank cap of vapor-permeable type according to claim 1, it is characterised in that: described first groove is arranged with the same axis of valve core case, is additionally provided with concave station outside described cartridge cover upper surface, and described valve core case is welded on concave station.
- 4. the leakage-preventing fuel tank cap of vapor-permeable type according to claim 1, it is characterised in that: the one side that described lid contacts with flange two is provided with the 3rd groove with valve core case coaxial line, and the periphery wall of described 3rd groove is positioned at flange two away within one end of axis.
- 5. according to the arbitrary described leakage-preventing fuel tank cap of vapor-permeable type of claim 1-4, it is characterised in that: described T-valve core print seat is one-body molded with T-shaped extending seat.
- 6. the fuel tank of the Ventilated anti-leakage oil tank cover used described in claim 1, including oil tank body, described oil tank body upper end is provided with reservoir port, described reservoir port outer wall is provided with screw thread, it is characterized in that: described reservoir port is against the lower surface of flange two, being provided with sealing gasket between described reservoir port and flange two, described sealing gasket one end contacts with extending seat, the other end is exposed at outside reservoir port and is positioned at above the first bulge loop, and described lid is contacted with reservoir port outer wall by the first bulge loop.
- 7. the fuel tank of use Ventilated anti-leakage oil tank cover according to claim 6, it is characterised in that: the bottom internal perisporium of described through hole two is provided with the 5th bulge loop, and described one-way air inlet hole is positioned on the 5th bulge loop.
- 8. the fuel tank of the leakage-preventing fuel tank cap of use vapor-permeable type according to claim 6, it is characterised in that: described first groove is arranged with the same axis of valve core case, is additionally provided with concave station outside described cartridge cover upper surface, and described valve core case is welded on concave station.
- 9. the fuel tank of the leakage-preventing fuel tank cap of use vapor-permeable type according to claim 6, it is characterized in that: the one side that described lid contacts with flange two is provided with the 3rd groove with valve core case coaxial line, and the periphery wall of described 3rd groove is positioned at flange two away within axis one end.
- 10. according to the arbitrary described fuel tank using the leakage-preventing fuel tank cap of vapor-permeable type of claim 6-9, it is characterised in that: described T-valve core print seat is one-body molded with T-shaped extending seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410339514.XA CN104074646B (en) | 2014-07-10 | 2014-07-10 | A kind of a kind of fuel tank of Ventilated anti-leakage oil tank cover and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410339514.XA CN104074646B (en) | 2014-07-10 | 2014-07-10 | A kind of a kind of fuel tank of Ventilated anti-leakage oil tank cover and application thereof |
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| Publication Number | Publication Date |
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| CN104074646A CN104074646A (en) | 2014-10-01 |
| CN104074646B true CN104074646B (en) | 2016-07-06 |
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| CN201410339514.XA Active CN104074646B (en) | 2014-07-10 | 2014-07-10 | A kind of a kind of fuel tank of Ventilated anti-leakage oil tank cover and application thereof |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104329189B (en) * | 2014-10-22 | 2018-07-06 | 宁波利凯特环保科技有限公司 | Fuel tank cap of the engine with fuel-oil vaporization controlling device |
| CN105805373B (en) * | 2016-05-03 | 2019-02-12 | 重庆市百科鼎昱科技有限公司 | A kind of breather valve, fuel tank cap and fuel tank |
| CN106585367B (en) * | 2017-02-24 | 2023-07-28 | 浙江春风动力股份有限公司 | Fuel tank cap |
| CN115059565B (en) * | 2022-07-08 | 2023-07-18 | 安徽天沃重工机械有限公司 | Diesel engine protector |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57191131A (en) * | 1981-05-21 | 1982-11-24 | Yamaha Motor Co Ltd | Cap for fuel tank |
| JP3498342B2 (en) * | 1993-12-27 | 2004-02-16 | 日産自動車株式会社 | Fuel tank cap |
| DE20003768U1 (en) * | 2000-03-01 | 2000-05-04 | BOMAG GmbH & Co. oHG, 56154 Boppard | Ventilation system for fuel tank of soil compaction machines |
| JP2002019477A (en) * | 2000-07-04 | 2002-01-23 | Sankyo Kinzoku Kk | Valve device for preventing outflow of fuel |
| CN201597438U (en) * | 2009-12-02 | 2010-10-06 | 重庆澳强工贸有限公司 | Ventilated anti-leakage oil tank cover |
| CN201736800U (en) * | 2010-07-11 | 2011-02-09 | 山东招远芳舒塑胶有限公司 | Fuel tank cap |
| DE102011050416A1 (en) * | 2011-05-17 | 2012-11-22 | Tecinnovation Gmbh | filler cap |
| CN203962242U (en) * | 2014-07-10 | 2014-11-26 | 宁波利凯特环保科技有限公司 | A kind of fuel tank of a kind of Ventilated anti-leakage oil tank cover and application thereof |
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2014
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