CN219911896U - Novel prevent slope leakage fuel tank cap - Google Patents
Novel prevent slope leakage fuel tank cap Download PDFInfo
- Publication number
- CN219911896U CN219911896U CN202320259049.3U CN202320259049U CN219911896U CN 219911896 U CN219911896 U CN 219911896U CN 202320259049 U CN202320259049 U CN 202320259049U CN 219911896 U CN219911896 U CN 219911896U
- Authority
- CN
- China
- Prior art keywords
- fuel tank
- tank cap
- valve
- valve body
- body structure
- 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.)
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- 239000002828 fuel tank Substances 0.000 title claims abstract description 52
- 238000007789 sealing Methods 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 16
- 239000000446 fuel Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Landscapes
- Closures For Containers (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
The utility model discloses a novel oil tank cover capable of preventing inclined leakage, which is characterized in that: including the fuel tank cap body, the shield buckle is connected at fuel tank cap body top surface middle part, fuel tank cap body center has the valve body structure, be provided with the case in the valve body structure, valve body structure upper end is connected with compresses tightly the valve cap of case, the valve body structure bottom has the central gas pocket, the inside air flue that has of case, just the case lower extreme is flat mouth structure, the valve cap has relative vent with the valve body structure for the inside air flue of case with the cavity intercommunication on fuel tank cap body upper portion, the cavity edge has the inlet channel of a plurality of intercommunication fuel tank cap body screw threads. The beneficial effects of the utility model include: simple structure, low manufacturing cost, economical practicability, automatic air pressure balance function of positive 1.5Kpa air suction and reverse 2.5-3Kpa air discharge, and good effect of preventing oil from falling and leaking.
Description
Technical Field
The utility model relates to the field of fuel tank cap structures, in particular to a novel fuel tank cap capable of preventing inclination leakage.
Background
The internal combustion engine adopts fuel oil combustion as power, and the fuel oil is contained in the fuel tank and is tightly covered by the fuel tank cover. In order to keep the pressure in the tank consistent with the atmospheric pressure (so that the fuel is normally supplied), a vent hole is provided in the tank cover, which vent hole communicates the outside atmosphere with the tank cavity. Therefore, when the oil tank is in a dumping state, the fuel in the oil tank can leak out of the oil tank, and great potential safety hazard is brought.
The fuel tank cap in the prior art is generally provided with a one-way valve structure, and the air can enter the fuel tank only when the external air pressure is larger than the air pressure in the fuel tank and is larger than the opening pressure of the one-way valve, so that excessive vacuum can not be formed in the fuel tank, and the fuel tank is favorable for supplying fuel to an engine. When the air pressure in the oil tank is larger than the external air pressure and is larger than the reverse opening pressure of the one-way valve, the air in the oil tank can escape to the external environment so as to prevent the pressure in the oil tank from being too high. Therefore, the air pressure in the oil tank can be sometimes larger than the external air pressure, and sometimes lower than the external air pressure, so that the stability of oil supply of the oil tank is affected. And the structure of the prior one-way valve is complex, and when the oil tank is toppled, liquid is easy to leak from the oil tank cover.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model provides the novel oil tank cover capable of preventing the inclined leakage, which has the advantages of simple structure, low manufacturing cost and functions of balancing the air pressure of the oil tank and preventing the inclined leakage.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
novel prevent slope leakage fuel tank cap, its characterized in that: including the fuel tank cap body, the shield buckle is connected at fuel tank cap body top surface middle part, fuel tank cap body center has the valve body structure, be provided with the case in the valve body structure, valve body structure upper end is connected with compresses tightly the valve cap of case, the valve body structure bottom has the central gas pocket, the inside air flue that has of case, just the case lower extreme is flat mouth structure, the valve cap has relative vent with the valve body structure for the inside air flue of case with the cavity intercommunication on fuel tank cap body upper portion, the cavity edge has the inlet channel of a plurality of intercommunication fuel tank cap body screw threads.
Further, an annular sealing gasket is arranged on the inner side of the fuel tank cover body, a limiting ring is arranged on the periphery of the valve body structure, and the limiting ring is downwards in a horn shape and is used for limiting the annular sealing gasket.
Further, the valve cap is connected with the valve body structure through annular convex ribs in a buckled mode.
Further, the upper part of the valve core is matched and limited with a bearing platform on the valve body structure through a flange structure, and a compression ring structure is arranged on the inner side of the valve cap to compress the upper surface of the flange structure of the valve core.
Further, the internal air passage of the valve core gradually transits from the top to the bottom into a long and narrow flat port from a cylinder shape.
Further, the periphery of the fuel tank cover body is petal-shaped.
The beneficial effects of the utility model include: simple structure, low manufacturing cost, economical practicability, automatic air pressure balance function of positive 1.5Kpa air suction and reverse 2.5-3Kpa air discharge, and good effect of preventing oil from falling and leaking.
Drawings
FIG. 1 is a schematic cross-sectional view of the present utility model;
FIG. 2 is a schematic view of the structure of the fuel tank cap body of the present utility model;
FIG. 3 is a schematic illustration of the valve core bonnet connection structure of the present utility model.
Detailed Description
The utility model will be described in further detail with reference to specific embodiments and drawings.
The utility model provides a novel prevent slope leakage fuel tank cap as shown in fig. 1-3, includes fuel tank cap body 1, shield 2 buckle connect at fuel tank cap body 1 top surface middle part, has cavity 11 between fuel tank cap body 1 upper portion and the shield. The center of the fuel tank cap body 1 is provided with an integrally formed valve body structure 4. The valve body structure 4 is internally provided with a valve core 3, and the upper end of the valve body structure 4 is connected with a valve cap 5 for pressing the valve core 3. The bottom of the valve body structure 4 is provided with a central air hole 10 communicated with the inside of the oil tank, the valve core 3 is a rubber duckbill valve core, an internal air passage is formed in the valve core, the lower end of the valve core 3 is of a flat nozzle structure, the forward opening pressure is 1.5Kpa, and the reverse opening pressure is 2.5-3Kpa. The valve cap 5 and the valve body structure 4 are provided with opposite ventilation openings 8, so that an internal air passage of the valve core 3 is communicated with a cavity 11 at the upper part of the fuel tank cap body 1, a plurality of air inlet passages 12 communicated with threads of the fuel tank cap body 1 are formed at the edge of the cavity 11, and the air inlet passages 12 are communicated with the outside atmosphere through the threads of the fuel tank cap body 1 and the fuel tank.
Further, the inner side of the fuel tank cap body 1 is provided with an annular sealing gasket 7, the periphery of the valve body structure 4 is provided with a limiting ring 6, the limiting ring 6 is downwards in a horn shape and is used for limiting the annular sealing gasket 7, and the annular sealing gasket 7 is in contact with the end face of a fuel tank opening of a fuel tank to seal the fuel tank opening.
As shown in FIG. 1, the valve cap 5 is connected with the valve body structure 4 through annular convex ribs in a buckled manner, and the structure is convenient to install and good in connection stability.
As shown in fig. 1, the upper part of the valve core 3 is matched and limited with a bearing platform on the valve body structure 4 through a flange structure, and the inner side of the valve cap 5 is provided with a compression ring structure 9 to compress the upper surface of the flange structure of the valve core 3, so that the valve core 3 is well limited and fixed.
Further, the internal air passage of the valve core 3 is gradually changed into a long and narrow flat port from top to bottom from a cylindrical shape, and the valve has the characteristics of good forward and reverse ventilation effect and high oil leakage prevention safety.
Further, the periphery of the fuel tank cap body 1 is petal-shaped, so that the fuel tank cap can be conveniently screwed or unscrewed.
The foregoing has described in detail the technical solutions provided by the embodiments of the present utility model, and specific examples have been applied to illustrate the principles and implementations of the embodiments of the present utility model, where the above description of the embodiments is only suitable for helping to understand the principles of the embodiments of the present utility model; meanwhile, as for those skilled in the art, according to the embodiments of the present utility model, there are variations in the specific embodiments and the application scope, and the present description should not be construed as limiting the present utility model.
Claims (6)
1. Novel prevent slope leakage fuel tank cap, its characterized in that: including fuel tank cap body (1), shield (2) buckle connection is in fuel tank cap body (1) top surface middle part, fuel tank cap body (1) center has valve body structure (4), be provided with case (3) in valve body structure (4), valve body structure (4) upper end is connected with compresses tightly valve cap (5) of case (3), valve body structure (4) bottom has central gas pocket (10), case (3) inside has inside air flue, just case (3) lower extreme is flat mouth structure, have relative air vent (8) on valve cap (5) and valve body structure (4), make case (3) inside air flue with cavity (11) intercommunication on fuel tank cap body (1) upper portion, cavity (11) edge has inlet channel (12) of a plurality of intercommunication fuel tank cap body (1) screw threads.
2. The novel anti-tilting leakage fuel tank cap according to claim 1, wherein: the oil tank cover is characterized in that an annular sealing gasket (7) is arranged on the inner side of the oil tank cover body (1), a limiting ring (6) is arranged on the periphery of the valve body structure (4), and the limiting ring (6) is downwards in a horn shape and is used for limiting the annular sealing gasket (7).
3. The novel anti-tilting leakage fuel tank cap according to claim 1, wherein: the valve cap (5) is connected with the valve body structure (4) in a buckled mode through annular convex ribs.
4. The novel anti-tilting leakage fuel tank cap according to claim 1, wherein: the upper part of the valve core (3) is matched and limited with a bearing platform on the valve body structure (4) through a flange structure, and the inner side of the valve cap (5) is provided with a compression ring structure (9) to compress the upper surface of the flange structure of the valve core (3).
5. The novel anti-tilting leakage fuel tank cap according to claim 1, wherein: the inner air passage of the valve core (3) is gradually transited into a long and narrow flat port from top to bottom from a cylinder shape.
6. The novel anti-tilting leakage fuel tank cap according to claim 1, wherein: the periphery of the fuel tank cap body (1) is petal-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320259049.3U CN219911896U (en) | 2023-02-20 | 2023-02-20 | Novel prevent slope leakage fuel tank cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320259049.3U CN219911896U (en) | 2023-02-20 | 2023-02-20 | Novel prevent slope leakage fuel tank cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219911896U true CN219911896U (en) | 2023-10-27 |
Family
ID=88464226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320259049.3U Active CN219911896U (en) | 2023-02-20 | 2023-02-20 | Novel prevent slope leakage fuel tank cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219911896U (en) |
-
2023
- 2023-02-20 CN CN202320259049.3U patent/CN219911896U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |