CN112250027A - Oil gun sealing device with sealing cover plate at end part - Google Patents
Oil gun sealing device with sealing cover plate at end part Download PDFInfo
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- CN112250027A CN112250027A CN202011310999.1A CN202011310999A CN112250027A CN 112250027 A CN112250027 A CN 112250027A CN 202011310999 A CN202011310999 A CN 202011310999A CN 112250027 A CN112250027 A CN 112250027A
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- Prior art keywords
- sleeve
- cover plate
- sealing device
- oil
- sealing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/06—Details or accessories
- B67D7/42—Filling nozzles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/04—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring fuels, lubricants or mixed fuels and lubricants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/04—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring fuels, lubricants or mixed fuels and lubricants
- B67D7/0401—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring fuels, lubricants or mixed fuels and lubricants arrangements for automatically fuelling vehicles, i.e. without human intervention
- B67D2007/0403—Fuelling robots
- B67D2007/0419—Fuelling nozzles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
The invention discloses a sealing device of a fuel filling gun with a sealing cover plate at the end part, which belongs to the field of sealing devices and comprises a sealing device body structure consisting of an upper sleeve, a middle sleeve and a lower sleeve, wherein the upper sleeve is hinged with the sealing cover plate which gradually closes the sealing device body structure along with the gradual pulling-out of the fuel filling gun.
Description
Technical Field
The invention relates to the technical field of sealing devices, in particular to a fuel gun sealing device with a sealing cover plate at the end part.
Background
GB18352-2016 "light vehicle pollutant emission limit and measurement method" increases the pollutant emissions of light vehicles from the fifth stage to the sixth stage, and presents new challenges to fuel systems implemented nationwide in 2020. The method mainly aims at increasing the hydrocarbon evaporation emission of the whole vehicle from 2 g/time to 0.7 g/time in day and night, simultaneously provides the requirement of Online Refueling Vapor Recovery (ORVR), requires that the amount of hydrocarbon leaked to the external environment in each refueling process is not more than 50 mg/L of refueling amount, and determines the more special and harsh requirements of a vapor management valve on a fuel system in the aspects so as to achieve the aim.
In order to meet the emission requirement of the sixth stage and achieve that the oil vapor generated in the refueling process is not directly discharged to the atmosphere, the gasoline vapor generated by volatilization in the refueling process needs to be discharged to the carbon canister through a vapor management valve of the fuel tank, so that the hydrocarbon in the oil gas is absorbed by the carbon canister, and finally the dry air is discharged to the atmosphere, thereby meeting the requirement of the regulation.
However, the fuel filler inserted into the fuel gun also needs to prevent the leakage of oil gas from the fuel filler to the atmosphere due to the internal pressure of the fuel tank, which results in that the regulation requirement of hydrocarbon emission in the refueling process cannot be met, the prior art generally reduces the diameter of the fuel filler pipe, in the refueling process, liquid fuel is filled in the fuel filler pipe and is injected into the fuel tank body at the refueling speed of 37 liters/minute, the generated oil vapor is filled with the fuel (a liquid seal is formed) due to the squeezing of the fuel in the fuel filler pipe, the oil gas is injected into the fuel tank system along with the fuel, and meanwhile, due to the venturi effect, a certain vacuum degree is generated at the fuel filler pipe opening, so that the fuel vapor at the fuel filler opening is prevented from being discharged to the atmosphere, so that pollution is caused or the regulation requirement cannot be met, and finally, the function and the regulation requirement of the or. In order to meet the requirement of liquid seal, on one hand, a smaller-diameter oil filling pipe is needed, and meanwhile, a certain fall is needed to meet the conversion from gravitational potential energy to kinetic energy, if the fall is smaller, the potential energy of fuel oil is insufficient, the converted kinetic energy is insufficient, the fuel oil cannot smoothly enter the oil tank, the fuel oil cannot go down at an oil filling port easily, and the fuel oil contacts a fuel oil gun sensor, so that the problem that the fuel oil gun is not full and the gun is advanced to jump is caused.
In addition, when the existing oil gun sealing device is used, the sealing device is mostly closed at an oil filling port through the matching of a locking cover system and a locking cover, but the design of the locking cover system not only occupies a larger space at the oil filling port and reduces the compactness of vehicle body arrangement, but also needs to be unscrewed and screwed during oil filling, so that the oil filling process is more troublesome, and meanwhile, the leakage of oil and oil gas is very easily caused when the locking cover is not screwed, and further the atmosphere is influenced.
Disclosure of Invention
1. Technical problem to be solved by the invention
The invention aims to overcome the defects in the prior art and provides the oil filling gun sealing device with the sealing cover plate at the end part, and by adopting the scheme, the sealing device is not required to be sealed by an additional lock cover after oil filling is finished, so that the cost can be reduced, a customer can directly insert a gun for oil filling without unscrewing the lock cover on a vehicle body in the oil filling process, the lock cover is not required to be screwed after the oil filling is finished, the oil filling process is more convenient, and the problem of no screwing sealing caused by improper operation can be prevented.
2. Technical scheme
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
the invention discloses a fuel gun sealing device with a sealing cover plate at the end part, which comprises a sealing device body structure consisting of an upper sleeve, a middle sleeve and a lower sleeve, wherein the sealing cover plate which gradually closes the sealing device body structure along with the gradual pulling-out of a fuel gun is hinged in the upper sleeve.
As a further aspect of the present invention, the bottom of the lower sleeve is further hinged with a tail cover plate mechanism which gradually closes the sealing device body structure along with the gradual pulling-out of the oil gun.
As a further aspect of the present invention, the tail cover plate mechanism includes an outer cover plate having a disc structure, a vertical cylindrical section extends upward from a middle portion of an inner side end surface of the outer cover plate, an inner cover plate parallel to the outer cover plate and having a diameter smaller than that of the outer cover plate is disposed at an end of the vertical cylindrical section, a third seal ring having a diameter equal to that of the outer cover plate is sleeved on the vertical cylindrical section, and a distance is maintained between the third seal ring and the inner side end surface of the outer cover plate;
the middle part of the outside terminal surface of outside apron is equipped with the middle part stopper that is the U type, two arms of middle part stopper extend outwards and stretch out in outside apron and be equipped with the hole site that supplies the articulated shaft to pass on it, be equipped with on the articulated shaft with the hold-down mechanism that outside apron compressed tightly and its both ends pass the telescopic side in lower part respectively and enclose.
As a further aspect of the invention, an eccentric hole eccentric to the middle sleeve and a trumpet-shaped transition hole are sequentially arranged on the middle sleeve from bottom to top, a plurality of guide ribs which are arranged at equal intervals and are arranged along the radial direction of the transition hole are arranged on the side wall of the transition hole and around the circumference of the transition hole, and a cutting plane which surrounds the circumference of the middle sleeve and extends to the inner side wall of the middle sleeve is arranged on the upper part of each guide rib and along the horizontal direction; the upper portion of middle part sleeve lateral wall is equipped with the spacing collar that encircles its a week, and its middle part just encircles its a week and is equipped with the cooperation lug that a plurality of equidistant arrangements, and its lower part is equipped with the inclined plane of inserting of encircleing its a week, wherein, just be equipped with the joint breach along its radial symmetry on the spacing collar, be equipped with an error proofing piece on the lower terminal surface of spacing collar.
As a further aspect of the invention, the bottom of the lower sleeve is provided with a guide section surrounding the lower sleeve for a circle, the outer side surface of the guide section is provided with a plurality of vertically arranged guide blocks at equal intervals along the circle, the lower end of each guide block is provided with a guide inclined plane, the upper end of each guide block abuts against a dovetail clamping plate arranged around the lower sleeve for a circle, and the dovetail clamping plate is of a horn-shaped structure with the diameter gradually increased from the lower part to the upper part of the lower sleeve;
the lower sleeve comprises a body structure with an upper opening and a closed bottom, a deformation notch and an error-proof notch matched with the error-proof block are arranged at the opening of the body structure, and a plurality of matching openings matched with the matching lugs in a one-to-one correspondence manner are arranged in the middle of the body structure; the bottom of the body structure is provided with a hole site for a fuel gun to penetrate through and be concentric with the eccentric hole, a matching groove for storing a second sealing ring is formed in the inner side of the hole site, an outward-turning flange for abutting against the tail cover plate mechanism is formed in the outer side of the hole site, a plurality of reinforcing ribs which are arranged at equal intervals are arranged on the inner side wall of the outward-turning flange and around the circumference of the inward-turning flange, a plurality of positioning blocks which are arranged at equal intervals are arranged in the circumference of the matching groove, the end part of each positioning block and the side wall of the lower sleeve keep a fixed interval for the insertion inclined plane, and the second sealing ring is in interference fit with the fuel gun when fuel is.
As a further aspect of the invention, the upper portion of the middle sleeve is clamped with an upper sleeve, the side surface of the bottom of the upper sleeve is provided with a sealing ring assembly groove surrounding the upper sleeve for a circle, the sealing ring assembly groove is internally provided with a first sealing ring, and the bottom end surface of the upper sleeve is provided with a clamping hook matched with the clamping gap.
As a further aspect of the present invention, the clamping hook includes two hooks having an L-shaped structure, and the hooks are provided with downward pressing slopes for being clamped into the clamping notches.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following remarkable effects:
(1) the invention relates to a fuel gun sealing device with a sealing cover plate at the end part, which is inserted into a sleeve structure fixed on a fuel tank to realize the sealing of the fuel gun sealing device and a fuel gun barrel when in use, thereby meeting the regulation. The mode that this embodiment mechanical type is sealed does not receive the restriction of the velocity of flow of refueling, and no matter high-speed or low-speed refuels can effectively keep apart fuel oil system and external environment, plays more effective effect to environmental protection, and this mechanical type is sealed, and the fuel filling passageway diameter is bigger, does not have the risk of advancing the jump rifle, and the refueling process is more smooth and easy.
(2) According to the oil gun sealing device with the sealing cover plate at the end part, disclosed by the invention, the guide section of the lower sleeve is smoothly pressed into the sleeve structure on the oil tank under the action of the guide inclined plane of the guide block, and the dovetail clamping plate of the lower sleeve is tightly pressed into the sleeve structure on the oil tank along with the further pressing of the guide section, so that the connection between the sealing device and the sleeve structure on the oil tank is realized, meanwhile, the first sealing ring on the upper sleeve is tightly attached to the inner side wall of the sleeve structure on the oil tank, the external sealing of the sealing device in the oil filling process is realized, and the risk of oil steam leaking into the atmosphere is reduced; second sealing washer and nozzle interference fit in the sealing device when refueling, and then effectively avoided the risk that oil vapor revealed in the external environment among the refueling process, more importantly, after refueling, along with nozzle's extraction afterbody apron mechanism completely cuts off sealing device and oil tank gradually, the oil that multiple special environment caused not only can be avoided in this process spouts outward, and more importantly it can effectively reduce the nozzle again and extract the oil vapor of in-process and leak, and then realized in refueling and all prevented the good linking that oil vapor leaked after refueling.
(3) According to the oil gun sealing device with the sealing cover plate at the end part, the oil tank and the external environment are isolated after oil is filled by the sealing cover plate. The sealing device is sealed without an additional locking cover after oiling is finished, so that the cost can be reduced, a gun can be directly inserted for oiling without unscrewing the locking cover on the automobile body in the oiling process of a customer, the locking cover does not need to be screwed after oiling is finished, the oiling process is more convenient, and the problem of no screwing seal caused by improper operation can be prevented; in addition, due to the fact that no locking cover is arranged, the space of the oil filling port is larger, the arrangement of the automobile body is more compact, the shape of the automobile body is more free, the structural design is reasonable, the principle is simple, and the automobile oil filling device is convenient to popularize and use.
Drawings
FIG. 1 is a schematic view of a fuel gun seal assembly of the present invention having a sealing cover at the end thereof;
FIG. 2 is a view of a fuel gun sealing device with a sealing cover plate at the end of the sealing device in accordance with the present invention engaged with a fuel gun;
FIG. 3 is a schematic structural view of a tail cover plate skeleton according to the present invention;
FIG. 4 is a schematic structural view of a tail cover mechanism according to the present invention;
FIG. 5 is a view showing the fitting state of the lower sleeve and the middle sleeve in the present invention;
FIG. 6 is a bottom view of the lower sleeve of the present invention;
FIG. 7 is a schematic view of the pressing mechanism of the present invention;
FIG. 8 is a view showing the engagement of the bottom of the lower sleeve with the tail cover plate mechanism according to the present invention;
FIG. 9 is a schematic view of the external structure of the lower sleeve of the present invention;
FIG. 10 is a schematic view of the internal structure of the lower sleeve of the present invention;
FIG. 11 is a partial snap-fit state view of the upper sleeve and the middle sleeve of the present invention;
FIG. 12 is a schematic view of the outer structure of the middle sleeve of the present invention;
FIG. 13 is a schematic view of the internal structure of the middle sleeve of the present invention.
The reference numerals in the schematic drawings illustrate:
01. an upper sleeve; 014. clamping the hook; 141. pressing the inclined plane downwards; 015. a first seal ring;
02. a middle sleeve; 021. a limiting ring; 022. fitting the projection; 023. clamping the notch; 024. an error-proofing block; 025. a guide rib; 026. inserting the bevel; 027. an eccentric hole; 028. cutting a plane;
03. a lower sleeve; 31. a circular arc portion; 32. a few-shaped part; 321. a middle section; 322. an arm support section; 031. a guide section; 311. a guide block; 312. a guide slope; 032. a dovetail clamping plate; 033. a mating port; 034. a mistake proofing gap; 035. deforming the notch; 036. positioning blocks; 037. a second seal ring; 343. the fixed block is hinged; 344. an end limiting block; 345. turning up and flanging; 346. reinforcing ribs;
04. a tail cover plate mechanism; 041. an outer cover plate; 411. an anti-suction groove; 412. a middle limiting block; 413. a peripheral limiting block; 414. hinging a shaft; 415. a hold-down mechanism; 4151. a first torsion spring; 4152. a second torsion spring; 4153. a limiting part; 4154. a pressing part; 042. an inner cover plate; 421. a baffle; 043. a vertical cylindrical section; 044. a third seal ring;
05. a fuel gun; 06. and sealing the cover plate.
Detailed Description
For a further understanding of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings and examples.
Example 1
As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, fig. 10, fig. 11, fig. 12 and fig. 13, the fuel gun sealing device with a sealing cover plate at the end portion of the present embodiment includes a sealing device body structure composed of an upper sleeve 01, a middle sleeve 02 and a lower sleeve 03, wherein the upper sleeve 01 is hinged with a sealing cover plate 06 which gradually closes the sealing device body structure as the fuel gun 05 is gradually pulled out, and it is important to explain that: in the embodiment, the oil tank and the external environment are isolated after oiling is finished by arranging the sealing cover plate 06. Need not an extra locking closure to seal sealing device promptly after refueling, not only can reduce cost, the customer refuels in-process simultaneously and need not unscrew the locking closure on the automobile body and just can directly insert the rifle and refuel, refuels the end back and need not screw the locking closure, makes the refueling process more convenient, can also prevent simultaneously because the sealed problem of not screwing that the misoperation caused. In addition, due to the fact that no locking cover is arranged, the space of the oil filling port is larger, the arrangement of the automobile body is more compact, and the shape of the automobile body is more free.
Still articulated have in the bottom of lower part sleeve 03 to pull out gradually and close afterbody apron mechanism 04 of sealing device body structure gradually along with fueling gun 05, it should be said that, this embodiment sets up afterbody apron mechanism 04 through the afterbody at sealing device body structure, make afterbody apron mechanism 04 can pull out and close gradually along with fueling gun 05 after refueling, avoided because the too big liquid oil blowout oil filler hole after fueling gun 05 pulls out that leads to of oil tank internal pressure, cause the injured risk of refueling personnel, and this simple structure, easily realize.
Specifically, the tail cover plate mechanism 04 in this embodiment includes an external cover plate 041 in a disk structure, a vertical cylindrical section 043 extends upward from the middle of the inner side end surface of the external cover plate 041, an inner cover plate 042 parallel to the external cover plate 041 and having a diameter smaller than that of the external cover plate 041 is disposed at the end of the vertical cylindrical section 043, a third sealing ring 044 having a diameter equal to that of the external cover plate 041 is sleeved on the vertical cylindrical section 043, a distance is maintained between the third sealing ring 044 and the inner side end surface of the external cover plate 041, anti-suction grooves 411 are symmetrically disposed on the inner side end surface of the external cover plate 041 and along the radial direction of the inner side surface, one end of each anti-suction groove 411 penetrates through the circumferential side surface of the external cover plate 041, in this embodiment, the anti-suction grooves 411, when the tail cover plate mechanism 04 is used for sealing the sealing device body structure, the third sealing ring 044 is effectively prevented from being sucked on the end face of the inner side of the outer cover plate 041 to influence the sealing effect of the third sealing ring 044.
A U-shaped middle limiting block 412 is disposed in the middle of the outer end surface of the outer cover 041, two arms of the middle limiting block 412 extend outward from the outer cover 041 and are provided with hole sites for the hinge shaft 414 to pass through, the hinge shaft 414 is provided with a pressing mechanism 415 for pressing the outer cover 041, and two ends of the pressing mechanism 415 respectively pass through the side wall of the lower sleeve 03. Specifically, the pressing mechanism 415 of the present embodiment includes a first torsion spring 4151 and a second torsion spring 4152 having the same structure, wherein one end of each of the first torsion spring 4151 and the second torsion spring 4152 is provided with a limiting portion 4153 parallel to the torsion spring body, and the other ends of the first torsion spring 4151 and the second torsion spring 4152 are connected by a pressing portion 4154 having a U-shaped structure.
A plurality of parallel baffles 421 are vertically disposed on the end surface of the inner cover 042, and the baffles 421 are arranged on the end surface of the inner cover 042 perpendicular to the hinge shaft 414. The cross section of the flow guide plate 421 is of a right-angle trapezoidal structure, the upper bottom of the flow guide plate 421 is far away from the inner cover plate 042, the right-angle waist of the flow guide plate 421 is far away from the hinge shaft 414, and the joints between the two waists and the upper bottom of the flow guide plate 421 are both in circular arc transition, it should be noted that in this embodiment, the flow guide plate 421 is arranged on the end surface of the inner cover plate 042, and the joints between the two waists and the upper bottom of the flow guide plate 421 are both in circular arc transition, so that on one hand, the strength; on the other hand, the abrasion of the inner cover plate 042 can be reduced when the oil gun 05 backs up the tail cover plate mechanism 04 for oil filling; more importantly, when the fuel gun 05 does not completely open the tail cover plate mechanism 04, the liquid oil can be guided by the guide plate 421 on the fuel gun to prevent the oil from impacting the end face of the inner cover plate 042 during refueling, so that the added oil splashes around to cause the failure of other valves in the fuel tank.
The bottom of the lower sleeve 03 of this embodiment is provided with a guide section 031 surrounding a circle thereof, the guide section 031 includes an arc portion 31 and a n-shaped portion 32, wherein the n-shaped portion 32 includes an arc middle section 321 and arm sections 322 disposed at two sides of the middle section 321, a hinge fixing block 343 for passing a hinge shaft 414 is disposed inside the middle section 321, and an end limiting block 344 is disposed between the hinge fixing block 343 and each arm section 322; when hinging, one end of the hinging shaft 414 passes through the hole position of the one arm section 322, and the other end thereof passes through the hole position of the one arm section 322, the hinging fixing block 343, the other arm of the middle limiting block 412 and the other arm section 322 in sequence, wherein the hinging shaft 414 between the one arm section 322 and the hinging fixing block 343 is sleeved with a first torsion spring 4151, the hinging shaft 414 between the other arm section 322 and the hinging fixing block 343 is sleeved with a second torsion spring 4152, the limiting parts 4153 of the first torsion spring 4151 and the second torsion spring 4152 respectively abut against the end limiting blocks 344 corresponding thereto, the pressing part 4154 abuts against an external cover plate 041 at the periphery of the middle limiting block 412, the periphery of the pressing part 4154 is further provided with a peripheral limiting block 413 for limiting the same, it should be noted that in this embodiment, by providing the middle limiting block 412, the peripheral limiting block 413 and the end limiting block 344 on the external cover plate 041, the positions of the pressing portion 4154 and the limiting portion 4153 in the pressing mechanism 415 are effectively guaranteed, the position deviation is avoided, the sealing effect of the third sealing ring 044 is further guaranteed, and external spraying and leakage of oil are effectively avoided.
In this embodiment, an eccentric hole 027 eccentric to the middle sleeve 02 and a trumpet-shaped transition hole are sequentially formed in the middle sleeve 02 from bottom to top, a plurality of guide ribs 025 which are arranged at equal intervals and are arranged along the radial direction of the transition hole are arranged on the side wall of the transition hole and around the circumference of the side wall, and a cutting plane 028 which surrounds the circumference of the middle sleeve 02 and extends to the inner side wall of the middle sleeve 02 is arranged on the upper portion of each guide rib 025 along the horizontal direction; the upper portion of the lateral wall of the middle sleeve 02 is provided with a spacing ring 021 which surrounds the circumference of the middle sleeve, the middle portion of the middle sleeve is provided with a plurality of matching convex blocks 022 which are arranged at equal intervals around the circumference of the middle sleeve, the lower portion of the middle sleeve is provided with an insertion inclined plane 026 which surrounds the circumference of the middle sleeve, wherein the spacing ring 021 is provided with clamping notches 023 along the radial direction, and the lower end face of the spacing ring 021 is provided with an error-proof block 024.
A plurality of vertically arranged guide blocks 311 are arranged on the outer side surface of the guide section 031 at equal intervals along the circumference of the guide section 031, the lower ends of the guide blocks 311 are provided with guide inclined surfaces 312, the upper ends of the guide blocks are abutted against dovetail clamping plates 032 arranged around the circumference of the lower sleeve 03, and the dovetail clamping plates 032 are of horn-shaped structures with gradually increased diameters from the lower part to the upper part of the lower sleeve 03; the lower sleeve 03 comprises a body structure with an upper opening and a closed bottom, wherein a deformation notch 035 and an error-proof notch 034 matched with the error-proof block 024 are arranged at the opening of the body structure, and a plurality of matching openings 033 matched with the matching lugs 022 in a one-to-one correspondence manner are arranged in the middle of the body structure; the bottom of the body structure is provided with a hole site for the oil gun 05 to pass through and concentric with the eccentric hole 027, a matching groove for storing a second sealing ring 037 is arranged on the inner side of the hole site, an outward flanging 345 for the tail cover plate mechanism 04 to abut against is arranged on the outer side of the hole site, a plurality of reinforcing ribs 346 arranged at equal intervals are arranged on the inner side wall of the outward flanging 345 and around the circumference of the inward flanging, a plurality of positioning blocks 036 arranged at equal intervals are arranged on the circumference of the matching groove, the end part of the positioning block 036 and the side wall of the lower sleeve 03 keep a distance for fixing the insertion inclined plane 026, when oil is added, the second sealing ring 037 is in interference fit with the oil gun 05, and then the interference fit is sealed to effectively avoid oil vapor from leaking into the external environment.
Through set up direction muscle 025 in middle part sleeve 02 in this embodiment, the nozzle 05 of being convenient for inserts when refueling on the one hand, and on the other hand can realize the spacing fixed of nozzle 05 when refueling again, thereby effectively prevents that nozzle 05 from causing the condition emergence that second sealing washer 037 destroyed or reduced its durability to the transitional extrusion of second sealing washer 037, tear.
From the above-mentioned content it can be known that middle part sleeve 02 cooperates with cooperation mouth 033 through cooperation lug 022 in this embodiment, insert the cooperation of inclined plane 026 and lower part sleeve 03 and the limiting displacement of spacing collar 021, middle part sleeve 02 has been realized being connected with lower part sleeve 03, the upper portion joint of middle part sleeve 02 has upper portion sleeve 01, the side of upper portion sleeve 01 bottom is equipped with the sealing washer assembly groove of surrounding its a week, be equipped with first sealing washer 015 in the sealing washer assembly groove, be equipped with on the bottom terminal surface of upper portion sleeve 01 with above-mentioned joint breach 023 complex joint couple 014, joint couple 014 includes two couples that are L type structure, be equipped with on the couple and supply its card to block the inclined plane 141 that pushes down of joint breach 023.
The sealing device of the embodiment is inserted into a sleeve structure fixed on a fuel tank to realize the sealing of the sealing device and a fuel filling gun barrel when in use, so as to meet the regulations, and the existing liquid seal fuel filling process oil gas control method is generally only used for fuel filling speed of 15-38 liters/minute, wherein the fuel filling speed is too high to easily lift a gun and jump the gun, and the fuel filling speed is too low to form an effective liquid seal, so that the hydrocarbon is in risk of being discharged into the atmospheric environment. The mode that this embodiment mechanical type is sealed does not receive the restriction of the velocity of flow of refueling, and no matter high-speed or low-speed refuels can effectively keep apart fuel oil system and external environment, plays more effective effect to environmental protection, and this mechanical type is sealed, and the fuel filling passageway diameter is bigger, does not have the risk of advancing the jump rifle, and the refueling process is more smooth and easy.
When the sealing device of the embodiment is used, the guide section 031 of the lower sleeve 03 is smoothly pressed into the sleeve structure on the oil tank under the action of the guide inclined surface 312 of the guide block 311, and the dovetail clamping plate 032 of the lower sleeve 03 is tightly pressed into the sleeve structure on the oil tank along with the further pressing of the guide section 031, so that the sealing device is connected with the sleeve structure on the oil tank, meanwhile, the first sealing ring 015 on the upper sleeve 01 is tightly attached to the inner side wall of the sleeve structure on the oil tank, the sealing outside of the sealing device in the oil filling process is realized, and the risk of oil vapor leaking to the atmosphere is reduced; second sealing washer 037 and nozzle 05 interference fit in the sealing device when refueling, and then effectively avoided refueling in-process oil vapor to reveal the risk in the external environment, more importantly, after refueling, along with nozzle 05's extraction afterbody apron mechanism 04 completely cuts off sealing device and oil tank gradually, this process not only can avoid spouting outward of oil, and more importantly it can effectively reduce nozzle 05 again and extract the oil vapor of in-process and leak outward, and then has realized in refueling and all prevented the good linking that oil vapor leaked after refueling.
The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.
Claims (7)
1. The utility model provides an end has nozzle seal of sealed apron, includes the sealing device body structure of constituteing by upper portion sleeve (01), middle part sleeve (02) and lower part sleeve (03), its characterized in that: and a sealing cover plate (06) which gradually closes the sealing device body structure along with the gradual pulling-out of the oil filling gun (05) is hinged in the upper sleeve (01).
2. The fuel nozzle sealing device for preventing the back spray of oil as set forth in claim 1, wherein: the bottom of the lower sleeve is also hinged with a tail cover plate mechanism (04) which gradually closes the sealing device body structure along with the gradual pulling-out of the oil filling gun.
3. The fuel nozzle sealing device with the sealing cover plate at the end part as claimed in claim 2, wherein: the tail cover plate mechanism (04) comprises an outer cover plate (041) in a disc structure, the middle of the inner side end face of the outer cover plate (041) extends upwards to form a vertical cylindrical section (043), the tail end of the vertical cylindrical section (043) is provided with an inner cover plate (042) which is parallel to the outer cover plate (041) and the diameter of the inner cover plate is smaller than that of the outer cover plate (041), a third sealing ring (044) with the diameter equal to that of the outer cover plate (041) is sleeved on the vertical cylindrical section (043), and a distance is kept between the third sealing ring (044) and the inner side end face of the outer cover plate (041);
the middle part of the outer side end face of the outer cover plate (041) is provided with a U-shaped middle limiting block (412), two arms of the middle limiting block (412) extend outwards to extend out of the outer cover plate (041) and are provided with hole positions for a hinge shaft (414) to penetrate through, the hinge shaft (414) is provided with a pressing mechanism (415) for pressing the outer cover plate (041), and two ends of the pressing mechanism respectively penetrate through the side wall of the lower sleeve (03).
4. The fuel nozzle sealing device for preventing the back spray of oil as set forth in claim 1, wherein: the middle sleeve (02) is sequentially provided with an eccentric hole (027) which is eccentric with the middle sleeve (02) and a trumpet-shaped transition hole from bottom to top, the side wall of the transition hole is provided with a plurality of guide ribs (025) which are arranged at equal intervals around the circumference of the side wall of the transition hole and are arranged along the radial direction of the transition hole, and the upper part of each guide rib (025) is provided with a cutting plane (028) which surrounds the middle sleeve (02) for one circle and extends to the inner side wall of the middle sleeve (02) along the horizontal direction; the upper portion of middle part sleeve (02) lateral wall is equipped with spacing collar (021) around its a week, and its middle part just encircles its a week and is equipped with a plurality of equidistant cooperation lugs (022) of arranging, and its lower part is equipped with inserts inclined plane (026) around its a week, wherein, spacing collar (021) are gone up and are equipped with joint breach (023) along its radial symmetry, be equipped with one on the lower terminal surface of spacing collar (021) and prevent mistake piece (024).
5. The fuel nozzle sealing device for preventing the back spray of the oil according to claim 4, wherein: the bottom of the lower sleeve (03) is provided with a guide section (031) surrounding the lower sleeve in a circle, a plurality of vertically arranged guide blocks (311) are arranged on the outer side surface of the guide section (031) at equal intervals along the circle, the lower end of each guide block (311) is provided with a guide inclined surface (312), the upper end of each guide block abuts against a dovetail clamping plate (032) surrounding the lower sleeve (03 in a circle, and the dovetail clamping plates (032) are horn-shaped structures with gradually increased diameters from the lower part to the upper part of the lower sleeve (03);
the lower sleeve (03) comprises a body structure with an upper opening and a closed bottom, wherein a deformation notch (035) and a mistake-proofing notch (034) matched with the mistake-proofing block (024) are arranged at the opening of the body structure, and a plurality of matching ports (033) matched with the matching lugs (022) in a one-to-one correspondence manner are arranged in the middle of the body structure; the oil filling device is characterized in that a hole site which is used for an oil filling gun (05) to penetrate through and is concentric with an eccentric hole (027) is formed in the bottom of the body structure, a matching groove used for storing a second sealing ring (037) is formed in the inner side of the hole site, an outward-turning flanging (345) used for abutting against a tail cover plate mechanism (04) is formed in the outer side of the hole site, a plurality of reinforcing ribs (346) which are arranged at equal intervals are arranged on the inner side wall of the outward-turning flanging (345) and around the circumference of the outward-turning flanging, a plurality of positioning blocks (036) which are arranged at equal intervals are arranged in the circumference of the matching groove, the end of each positioning block (036) and the side wall of a lower sleeve (03) keep a fixed interval for the insertion inclined plane (026), and the second sealing ring (037.
6. The fuel nozzle sealing device for preventing the back spray of the oil according to claim 4, wherein: the upper portion joint of middle part sleeve (02) has upper portion sleeve (01), the side of upper portion sleeve (01) bottom is equipped with the sealing washer assembly groove around its a week, be equipped with first sealing washer (015) in the sealing washer assembly groove, be equipped with on the bottom terminal surface of upper portion sleeve (01) with above-mentioned joint breach (023) complex joint couple (014).
7. The fuel nozzle sealing device for preventing the back spray of oil as set forth in claim 6, wherein: joint couple (014) include two couples that are L type structure, be equipped with on the couple and supply its card to go into the inclined plane (141) that pushes down of joint breach (023).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011310999.1A CN112250027A (en) | 2020-11-20 | 2020-11-20 | Oil gun sealing device with sealing cover plate at end part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011310999.1A CN112250027A (en) | 2020-11-20 | 2020-11-20 | Oil gun sealing device with sealing cover plate at end part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112250027A true CN112250027A (en) | 2021-01-22 |
Family
ID=74225302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011310999.1A Withdrawn CN112250027A (en) | 2020-11-20 | 2020-11-20 | Oil gun sealing device with sealing cover plate at end part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112250027A (en) |
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| JP2014008873A (en) * | 2012-06-29 | 2014-01-20 | Nifco Inc | Valve device |
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| US20190061517A1 (en) * | 2017-08-29 | 2019-02-28 | Toyoda Gosei Co., Ltd. | Opening and closing device for fuel tank |
| CN215855098U (en) * | 2020-11-20 | 2022-02-18 | 芜湖泰科汽车科技有限公司 | Oil gun sealing device with sealing cover plate at end part |
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2020
- 2020-11-20 CN CN202011310999.1A patent/CN112250027A/en not_active Withdrawn
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|---|---|---|---|---|
| US6446826B1 (en) * | 1997-02-11 | 2002-09-10 | Stant Manufacturing Inc. | Seal for filler neck closure assembly |
| US20050155671A1 (en) * | 2004-01-15 | 2005-07-21 | Mcclung Chad A. | Closure and vent system for capless filler neck |
| US20060032549A1 (en) * | 2004-08-11 | 2006-02-16 | Mcclung Chad A | Fuel-dispensing nozzle inhibitor |
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| PB01 | Publication | ||
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210122 |
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| WW01 | Invention patent application withdrawn after publication |