CN104074646A - Ventilation-type leakage-resistant oil tank cap and oil tank with same - Google Patents
Ventilation-type leakage-resistant oil tank cap and oil tank with same Download PDFInfo
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- CN104074646A CN104074646A CN201410339514.XA CN201410339514A CN104074646A CN 104074646 A CN104074646 A CN 104074646A CN 201410339514 A CN201410339514 A CN 201410339514A CN 104074646 A CN104074646 A CN 104074646A
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- valve core
- bulge loop
- oil tank
- flange
- fuel tank
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- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
The invention provides a ventilation-type leakage-resistant oil tank cap and an oil tank with the ventilation-type leakage-resistant oil tank cap. The oil tank comprises a cap body and an oil tank body. An oil tank opening is formed in the oil tank body. A protruding ring is arranged on the inner wall of the lower end of the cap body. The oil tank opening is covered with the cap body. The protruding ring is in contact with the oil tank opening. A valve core base is arranged between the oil tank opening and the inner surface of the top of the cap body. A sealing pad is arranged between the valve core base and the oil tank opening and a sealing structure is formed. A valve core is arranged in the valve core base. A one-way air inlet is formed in the valve core. A valve core cap is welded to the bottom of the valve core base. A through hole is formed in the valve core cap. A small air outlet and a ventilation groove connected with the inner side and the outer side of the valve core base are formed in the valve core base. The ventilation-type leakage-resistant oil tank cap and the oil tank with the ventilation-type leakage-resistant oil tank cap have the advantages that the ventilation-type leakage-resistant oil tank cap enables ventilation inside and outside the oil tank to be smooth, pressure in the oil tank is stable, oil leakage can be avoided in the oil tank inclining process, and the use safety of the oil tank is improved.
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 technique
Fuel tank cap is for the reservoir port of closed fuel tank, and reservoir port is opened at fuel tank top and opening upwards, and reservoir port is tubular shape, is provided with outside thread and screws mutually with the internal thread of fuel tank cap on its external cylindrical surface.The designing requirement of fuel tank cap is to ensure that in fuel tank, pressure is consistent with external pressure, to ensure the normal supply of fuel oil, should breathe freely, and ensures that again fuel tank is in the time rocking, tilt and be inverted test, and dredge oil amount is in predetermined range.
Miniature gasoline engine is mainly used as the supporting power of graden machine, graden machine is mainly used in pruning and the shape handles on Gardening Nursery, flowers, green belt, lawn, in order to ensure the continuous operation of machine in rugged environment, in fuel tank, must there is the structure that can be connected with external environment condition.Existing machine in use, tend to occur leaking oil condition, main cause is that fuel tank is at high frequency with in toppling over, in the aperture of giving vent to anger of fuel from fuel tank lid, leak, solve existing problem by measures such as filter screens, result has not only increased the cost of machine, and effect neither be very desirable.Therefore, provide a kind of and not only can ensure the normal supply of fuel oil but also can prevent that the fuel tank cap of fuel leakage from just becoming extremely important.
Summary of the invention
In order to solve above-mentioned the deficiencies in the prior art, the invention provides good and the fuel tank cap that again can anti-leak of a kind of ventilating performance.
To achieve these goals, a kind of Ventilated anti-leakage oil tank cover that the present invention is designed, comprise lid, described lid lower end inner circle wall is provided with some the first bulge loops, in described lid, be provided with circular cartridge cover, in this cartridge cover, offer through hole one, described cartridge cover upper surface is provided with the first groove, described the first groove is connected with through hole one, described cartridge cover is provided with the T-shaped valve core case with 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, in described flange two, have some the ventilating grooves that flange two cylindricals are communicated with endoporus, described flange one extends second bulge loop coaxial with valve core case to valve core case axial direction, described the second bulge loop is provided with at least more than one the aperture of giving vent to anger, the endoporus of described the second bulge loop is embedded with spool, described spool comprises the spool top with the coaxial setting of the second bulge loop, spool middle part and spool bottom, described spool top is provided with the 3rd bulge loop, described the 3rd bulge loop can cover gives vent to anger aperture and forms sealing configuration with the second bulge loop, described spool middle part is provided with the 4th bulge loop, described the 4th bulge loop can be against during by jack-up and give vent to anger under the inwall of aperture near axial direction at spool, the width of the second groove forming between described the 3rd bulge loop and the 4th bulge loop is greater 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, in described through hole two, be provided with one-way air inlet hole.
Further, the bottom inner circle wall 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, the same axis setting of described the first groove and valve core case, outside, described cartridge cover upper-end surface is also provided with concave station, and described valve core case is welded on concave station.By concave station, valve core case is welded in cartridge cover, can allow and between valve core case and cartridge cover, form good sealing configuration.
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 the 3rd groove is positioned at flange two away from axis one end.On lid, establish the 3rd groove, be conducive to form greater room on spool, ensure the enough large air pressure that has between lid and spool.
Further, described T-shaped valve core case and T-shaped extending seat are one-body molded.Valve core case and extending seat one-body molded, had both ensured service property (quality), had also ensured that oil gas and the extraneous barometric pressure in fuel tank can only pass through through hole one turnover of cartridge cover.
Another object of the present invention is to provide a kind of fuel tank of applying Ventilated anti-leakage oil tank cover, comprise 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 end surface of flange two, between described reservoir port and flange two, is provided with sealing gasket, and described sealing gasket one end contacts with extending seat, the other end is exposed at reservoir port outside and is positioned at the first bulge loop top, and described lid contacts with reservoir port outer wall by the first bulge loop.By contacting between the first bulge loop and reservoir port outer wall thread, make lid, with reservoir port, relative movement can not occur, and sealing gasket is positioned at the first bulge loop top, be conducive to stop the first bulge loop to depart from reservoir port.
Further, the bottom inner circle wall 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, the same axis setting of described the first groove and valve core case, outside, described cartridge cover upper-end surface is also provided with concave station, 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 the 3rd groove is positioned at flange two away from axis one end.
Further, described T-shaped valve core case and T-shaped extending seat are one-body molded.
Working principle: in the time that 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, again through the aperture of giving vent to anger on the second bulge loop, the oil gas that reaches certain pressure value backs down the 3rd bulge loop on spool top, now whole spool moves up, the 4th bulge loop at spool middle part is against the second bulge loop below, oil gas communicates with barometric pressure by the gap between the ventilating groove in flange two and the first bulge loop and the screw thread of reservoir port outer wall again, ensures the Security of fuel tank.
In the time of engine operation, 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 chamber that lid and valve core case and spool form, now due to the 3rd bulge loop on spool top will give vent to anger that aperture covers and with the second convex ring for sealing, air cannot enter fuel tank by the aperture of giving vent to anger, can only enter in fuel tank by the one-way air inlet hole of the through hole two interior settings in spool, one-way air inlet hole can make gas only import but no export, thereby ensure the normal supply of the fuel oil of fuel tank, can make engine work.
When motor is toppled over or when high-frequency work, extraneous barometric pressure enters by ventilating groove in the chamber of lid and valve core case and spool formation, spool is formed to a large pressure, under the effect of this pressure, the 3rd bulge loop aperture of still giving vent to anger is covered, and the air in fuel tank cannot eject the 3rd bulge loop, therefore in fuel tank, forms certain air pressure, fuel oil cannot be flowed out, thereby ensured the Security of motor.
A kind of fuel tank of the fuel tank cap of a kind of Ventilated anti-leakage that the present invention obtains and application thereof, its technique effect is: 1, use this fuel tank cap, both can make the inside and outside ventilation of fuel tank smooth and easy, tank pressure is stable, again can fuel tank can leakage of oil in the time toppling over, improved the Security that fuel tank uses; 2, easy for installation between fuel tank cap and fuel tank, can change lid and the sealing gasket of different model, just can adapt to the fuel tank of different model, economical and practical.
Brief description of the drawings
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 working state of the present invention;
Another kind of structure sectional view when Fig. 3 is working state of the present invention;
Fig. 4 is the structure sectional view of valve core case in one embodiment of the invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
As Fig. 1, shown in Fig. 4, a kind of Ventilated anti-leakage oil tank cover provided by the invention, comprise lid 1, described lid 1 lower end inner circle wall is provided with some the first bulge loops 2, in described lid 1, be provided with the circular cartridge cover 3 with lid 1 same axis, in the middle of this cartridge cover 3, offer through hole 1, described cartridge cover 3 upper surfaces are provided with first groove 5 coaxial with through hole 1, described the first groove 5 is connected with through hole 1, described cartridge cover 3 outsides, upper-end surface are provided with concave station 21, on described concave station 21, be welded with the T-shaped valve core case 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-shaped valve core case 7, the upper surface of described flange 28 contacts with lid 1 top inner surface, in described flange 28, have four ventilating grooves 10 that flange two cylindricals are communicated with endoporus, described flange 1 extends second bulge loop 11 coaxial with valve core case 7 to valve core case 7 axial directions, described the second bulge loop 11 is provided with equally distributed four apertures 12 of giving vent to anger, the endoporus of described the second bulge loop 11 is embedded with spool 13, described spool 13 comprises the spool top 14 with the coaxial setting of the second bulge loop 11, spool middle part 15 and spool bottom 16, described spool top 14 is provided with the 3rd bulge loop 17 of downward-sloping setting, described the 3rd bulge loop 17 can cover gives vent to anger aperture 12 and forms sealing configuration with the second bulge loop 11, described spool middle part 15 is provided with the 4th bulge loop 18 that is inclined upwardly and arranges, described the 4th bulge loop 18 can be against during by jack-up and give vent to anger under the inwall of aperture 12 near axial direction at spool 13, the width of the second groove forming between described the 3rd bulge loop 17 and the 4th bulge loop 18 is greater than the thickness of the second bulge loop 11, described spool bottom 16 can be embedded in the first groove 5, described spool 13 inside are provided with through hole 2 19, the bottom inner circle wall of described through hole 2 19 is provided with the 5th bulge loop 20, described the 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 oil gas in fuel tank can 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 the 3rd groove 22 with valve core case 7 coaxial lines, and the periphery wall of described the 3rd groove 22 is positioned at flange 28 away from axis one end.On lid 1, establish the 3rd groove 22, be conducive to form greater room above spool 13, ensure the enough large air pressure that has between lid 1 and spool 13.
As shown in Fig. 1,2,3 and 4, the invention still further relates to a kind of fuel tank that uses above-mentioned Ventilated anti-leakage oil tank cover, comprise oil tank body 23, described oil tank body 23 upper ends are provided with reservoir port 24, described reservoir port 24 outer walls are provided with screw thread, described reservoir port 24 is against the lower end surface of flange 28, between described reservoir port 24 and flange 28, be provided with sealing gasket 25, described sealing gasket 25 one end contact with extending seat 9, the other end is exposed at reservoir port 24 outsides and is positioned at the first bulge loop 2 tops, and described lid 1 contacts with reservoir port 24 outer walls by the first bulge loop 2.By contacting between the first bulge loop 2 and reservoir port 24 outer wall threads, make lid 1, with reservoir port 24, relative movement can not occur, and sealing gasket 25 is positioned at the first bulge loop 2 tops, be conducive to stop the first bulge loop 2 to depart from reservoir port.
In the time that 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 that valve core case 7 and spool 13 and cartridge cover 3 form, again through four apertures 12 of giving vent to anger on the second bulge loop 11, the oil gas that reaches certain pressure value backs down the 3rd bulge loop 17 on spool top 14, now whole spool 13 moves up, the 4th bulge loop 18 at spool middle part 15 is against the second bulge loop 11 belows, oil gas communicates with barometric pressure by the gap between the ventilating groove 10 in flange 28 and the first bulge loop 2 and the screw thread of reservoir port 24 outer walls again, ensure the Security of fuel tank, as shown in Figure 2.
In the time of engine operation, air enters 10 by the gap between the first bulge loop 2 and the screw thread of reservoir port 24 outer walls and the ventilating groove in flange 28 and enters lid 1, valve core case 7, the chamber that extending seat 9 and spool 13 form, now because the 3rd bulge loop 17 on spool top 14 will give vent to anger that aperture 12 covers and seal with the second bulge loop 11, air cannot enter fuel tank 24 by the aperture 12 of giving vent to anger, can only enter in fuel tank 24 by the one-way air inlet hole of the through hole 2 19 interior settings in spool 13, one-way air inlet hole can make gas only import but no export, thereby ensure the normal supply of the fuel oil of fuel tank, can make engine work, as shown in Figure 3.
When motor is toppled over or when high-frequency work, extraneous barometric pressure enters in the chamber that lid 1, valve core case 7, extending seat 9 and spool 13 form by ventilating groove 10, spool 13 is formed to a large pressure, under the effect of this pressure, the 3rd bulge loop 17 aperture 12 of still giving vent to anger is covered, and the air in fuel tank 24 cannot eject the 3rd bulge loop 17, therefore in fuel tank, forms certain air pressure, fuel oil cannot be flowed out, thereby ensured the Security of motor.
Claims (10)
1. a Ventilated anti-leakage oil tank cover, comprise lid, described lid lower end inner circle wall is provided with some the first bulge loops, it is characterized in that: in described lid, be provided with circular cartridge cover, in this cartridge cover, offer through hole one, described cartridge cover upper surface is provided with the first groove, described the first groove is connected with through hole one, described cartridge cover is provided with the T-shaped valve core case with 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, in described flange two, have some the ventilating grooves that flange two cylindricals are communicated with endoporus, described flange one extends second bulge loop coaxial with valve core case to valve core case axial direction, described the second bulge loop is provided with at least more than one the aperture of giving vent to anger, the endoporus of described the second bulge loop is embedded with spool, described spool comprises the spool top with the coaxial setting of the second bulge loop, spool middle part and spool bottom, described spool top is provided with the 3rd bulge loop, described the 3rd bulge loop can cover gives vent to anger aperture and forms sealing configuration with the second bulge loop, described spool middle part is provided with the 4th bulge loop, described the 4th bulge loop can be against during by jack-up and give vent to anger under the inwall of aperture near axial direction at spool, the width of the second groove forming between described the 3rd bulge loop and the 4th bulge loop is greater 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, in described through hole two, be provided with one-way air inlet hole.
2. Ventilated anti-leakage oil tank cover according to claim 1, is characterized in that: the bottom inner circle wall 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, is characterized in that: the same axis setting of described the first groove and valve core case, and outside, described cartridge cover upper-end surface is also provided with concave station, 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, 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 the 3rd groove is positioned in flange two one end away from axis.
5. according to the arbitrary described leakage-preventing fuel tank cap of vapor-permeable type of claim 1-4, it is characterized in that: described T-shaped valve core case and T-shaped extending seat are one-body molded.
6. the fuel tank of the Ventilated anti-leakage oil tank cover described in a right to use requirement 1, comprise 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 end surface of flange two, between described reservoir port and flange two, be provided with sealing gasket, described sealing gasket one end contacts with extending seat, the other end is exposed at reservoir port outside and is positioned at the first bulge loop top, and described lid contacts 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, is characterized in that: the bottom inner circle wall 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, is characterized in that: the same axis setting of described the first groove and valve core case, and outside, described cartridge cover upper-end surface is also provided with concave station, 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, the periphery wall of described the 3rd groove is positioned at flange two away from axis one end.
10. according to the fuel tank of the arbitrary described leakage-preventing fuel tank cap of use vapor-permeable type of claim 6-9, it is characterized in that: described T-shaped valve core case and T-shaped extending seat are one-body molded.
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 |
Applications Claiming Priority (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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| Publication Number | Publication Date |
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| CN104074646A true CN104074646A (en) | 2014-10-01 |
| CN104074646B 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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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105805373A (en) * | 2016-05-03 | 2016-07-27 | 重庆市百科鼎昱科技有限公司 | Breathing valve, oil tank cover and oil tank |
| CN106585367A (en) * | 2017-02-24 | 2017-04-26 | 浙江春风动力股份有限公司 | Fuel tank cap |
| 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 |
| CN115059565A (en) * | 2022-07-08 | 2022-09-16 | 安徽天沃重工机械有限公司 | Diesel engine protector |
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| DE20003768U1 (en) * | 2000-03-01 | 2000-05-04 | Bomag Gmbh | 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 |
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| CN201736800U (en) * | 2010-07-11 | 2011-02-09 | 山东招远芳舒塑胶有限公司 | Fuel tank cap |
| WO2012156504A1 (en) * | 2011-05-17 | 2012-11-22 | Tecinnovation Gmbh | Tank 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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| 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 |
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Cited By (7)
| 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 |
| CN105805373A (en) * | 2016-05-03 | 2016-07-27 | 重庆市百科鼎昱科技有限公司 | Breathing valve, oil tank cover and oil tank |
| 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 |
| CN106585367A (en) * | 2017-02-24 | 2017-04-26 | 浙江春风动力股份有限公司 | Fuel tank cap |
| CN106585367B (en) * | 2017-02-24 | 2023-07-28 | 浙江春风动力股份有限公司 | Fuel tank cap |
| CN115059565A (en) * | 2022-07-08 | 2022-09-16 | 安徽天沃重工机械有限公司 | Diesel engine protector |
| CN115059565B (en) * | 2022-07-08 | 2023-07-18 | 安徽天沃重工机械有限公司 | Diesel engine protector |
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|---|---|
| CN104074646B (en) | 2016-07-06 |
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