Oil tank cleaning cover with oil seepage prevention function

Abstract

The utility model relates to an oil tank cleaning cover with an oil seepage prevention function, which comprises a cleaning cover body, an oil tank, a first sealing ring and a second sealing ring, the cleaning cover body comprises a mounting seat welded to an oil tank, a sealing piece located above the mounting seat and fixed to the mounting seat, and a cover body detachably connected with the sealing piece, an oil injection port is formed in the oil tank, the upward projection of the oil injection port falls on the bottom of the cover body, and the first sealing ring is located on the inner wall of the mounting seat and is located on the inner wall of the mounting seat. The second sealing ring is located on the sealing piece and attached to the inner wall of the first sealing ring in the circumferential direction. According to the oil tank cleaning cover with the oil seepage prevention function, the first sealing ring and the second sealing ring are arranged between the sealing piece and the installation base, and therefore the situation that gasoline leaks between the sealing piece and the installation base is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the oil tank cleaning cover with the oil seepage prevention function. BACKGROUND

[0002] The oil tank cleaning cover usually refers to the filling opening cover of the fuel tank or the special cover used when maintaining and cleaning the oil tank, and when the automobile needs to be refueled, the cover is opened, and the main function is to prevent fuel leakage, maintain the pressure of the fuel system, and prevent foreign matters from entering the oil tank.

[0003] Since the fuel is flammable, any fuel leakage may cause the risk of fire or explosion, and the fuel leakage into the environment may pollute the soil, water source and the like, affect the ecological balance, and the most direct influence caused by the fuel leakage is fuel loss and waste.

[0004] Therefore, how to improve the sealing performance of the oil tank cleaning cover to prevent gasoline from leaking through the oil tank cleaning cover becomes a problem to be solved by the person skilled in the art. SUMMARY

[0005] In view of the deficiencies in the prior art, the utility model aims to provide an oil tank cleaning cover with oil seepage prevention function, which is provided with a first sealing ring and a second sealing ring between the sealing element and the mounting seat to reduce the leakage of gasoline between the sealing element and the mounting seat.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: including the cleaning cover body and the oil tank, the cleaning cover body is located above the oil tank and is detachably connected with the oil tank, further including a first sealing ring and a second sealing ring, the cleaning cover body includes a mounting seat welded with the oil tank, a sealing element fixed above the mounting seat and the mounting seat, and a cover body detachably connected with the sealing element, the oil tank is provided with a filling opening, the upward projection of the filling opening falls on the bottom of the cover body, the first sealing ring is located on the inner wall of the mounting seat, and the second sealing ring is located on the sealing element and is circumferentially matched with the inner wall of the first sealing ring.

[0007] The utility model is further provided as follows: the first sealing ring includes an internal first matching surface, the first matching surface is inclined from outside to inside from top to bottom, and the second sealing ring includes a second matching surface in contact with the first matching surface.

[0008] The utility model is further provided as follows: the mounting seat is integrally formed with a limiting ring on the inner side of the first sealing ring, and the limiting ring is circumferentially abutted with the inner wall of the second matching surface.

[0009] The utility model further sets up: the cover body protrudes downwards and is provided with a plug post, the sealing element is provided with a first plug groove for the plug post on the inside of the limiting ring, the mounting base is provided with a second plug groove corresponding to the first plug groove, and the second plug groove and the oil filling hole are in intercommunication.

[0010] The utility model further sets up: a cooperation groove is arranged in the plug post, a plurality of flow guides are detachably mounted on the plug post, and the flow guides are arranged in the cooperation groove and are spaced apart in the circumferential direction.

[0011] The utility model further sets up: each flow guide comprises an upper guide section and a lower guide section, each upper guide section is arranged from outside to inside in a downward inclination, and each lower guide section is arranged from inside to outside in a downward inclination.

[0012] The utility model further sets up: the plug post is provided with flow guide convex points above the cooperation groove, each flow guide convex point is fixed with the cover body, and each flow guide convex point is arranged in a hemispherical shape with an opening facing upwards.

[0013] The utility model further sets up: the cover body is rotatably mounted on the sealing element, the sealing element is protrusively arranged on the rotation track of the cover body and is provided with a dismounting plug made of a material prone to deformation, the cover body comprises a dismounting plate for the dismounting plug, the dismounting plug comprises an upper connecting section and a lower connecting section, the width of the upper connecting section is greater than that of the lower connecting section, and the dismounting plate is provided with an upper connecting groove and a lower connecting groove corresponding to the upper connecting section and the lower connecting section respectively.

[0014] By adopting the above technical scheme, the first sealing ring is mounted in the mounting base and the second sealing ring is mounted on the sealing element, so that when the sealing element is mounted on the oil tank and fixed with the mounting base, the second sealing ring on the sealing element can fall into the inner wall of the first sealing ring and be attached to the inner wall of the first sealing ring in a circumferential direction, thereby completing the fixation of the sealing element and the mounting base and the installation of the cover body and the sealing element. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced as follows. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0016] Figure 1 is a perspective view of the specific embodiment of the present application;

[0017] Figure 2 is an exploded view of the specific embodiment of the present application;

[0018] Figure 3 is an exploded view of the cleaning cover body;

[0019] Figure 4 is a sectional view of the cleaning cover body;

[0020] Figure 5 is Figure 4 is an enlarged view of A in the middle;

[0021] Figure 6 is Figure 4 is an enlarged view of B in the middle;

[0022] Figure 7 is Figure 4 is an enlarged view of C in the middle;

[0023] Figure 8 is Figure 4 is an enlarged view of D in the middle.

[0024] In the drawings: 1 - cleaning cover body;

[0025] 2 - oil tank, 21 - oil filling port;

[0026] 3 - first sealing ring, 31 - first fitting surface;

[0027] 4 - second sealing ring, 41 - second fitting surface;

[0028] 5 - mounting seat, 51 - limiting ring, 52 - second insertion slot;

[0029] 6 - sealing element, 61 - first insertion slot, 62 - dismounting plug block, 621 - upper connecting section, 622 - lower connecting section;

[0030] 7 - cover body, 71 - insertion column, 711 - matching groove, 72 - flow guide element, 721 - upper guide section, 722 - lower guide section, 73 - flow guide convex point, 74 - dismounting plate, 741 - upper connecting groove, 742 - lower connecting groove, 743 - limiting block. DETAILED DESCRIPTION

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] like Figures 1-8 As shown, this utility model discloses a fuel tank 2 cleaning cover with anti-oil leakage function, including a cleaning cover body 1 and a fuel tank 2. The cleaning cover body 1 is located above the fuel tank 2 and is detachably connected to the fuel tank 2. By separating the cleaning cover body 1, gasoline can be injected into the fuel tank 2. Then, by inserting the cleaning cover into the fuel tank 2, the gasoline can be stably placed in the fuel tank 2. It also includes a first sealing ring 3 and a second sealing ring 4. The cleaning cover body 1 includes a mounting base 5 welded to the fuel tank 2, a sealing element 6 located above the mounting base 5 and fixed to the mounting base 5, and a cover body 7 detachably connected to the sealing element 6. The fuel tank 2 is provided with a fuel inlet 21 for filling gasoline. The upward projection of the fuel inlet 21 falls on the bottom of the cover body 7. The first sealing ring 3 is located on the inner wall of the mounting base 5, and the second sealing ring 4 is located on the sealing element 6 and is circumferentially attached to the inner wall of the first sealing ring 3. The first sealing ring 3 is installed on the sealing element 6, and the second sealing ring 4 is installed on the sealing element 6. Therefore, when the sealing element 6 is installed into the fuel tank 2 and fixed together with the mounting base 5, as the sealing element 6 and the mounting base 5 approach each other, the second sealing ring 4 on the sealing element 6 can fall downwards into the inner wall of the first sealing ring 3, so that the circumference of the second sealing ring 4 fits against the inner wall of the first sealing ring 3. After the sealing element 6 and the mounting base 5 are fixed together and the cover 7 and the sealing element 6 are installed, if gasoline in the fuel tank 2 leaks, it needs to pass through the second sealing ring 4 and the first sealing ring 3 before it can flow out of the sealing element 6 when it flows between the mounting base 5 and the sealing element 6. Therefore, the setting of the first sealing ring 3 and the second sealing ring 4 provides a double seal and reduces the possibility of oil leakage. It not only improves the reliability of the seal between the sealing element 6 and the mounting base 5, but also extends the service life of the fuel tank 2 cleaning cover.

[0033] Preferably, the first sealing ring 3 comprises an inner first abutting surface 31, which is arranged from outside to inside from top to bottom, and the second sealing ring 4 comprises a second abutting surface 41, which is in contact with the first abutting surface 31. Since the first abutting surface 31 is arranged from outside to inside from top to bottom, the width of the upper end of the first sealing ring is smaller than that of the lower end. Since the second abutting surface 41 is in contact with the first abutting surface 31, the width of the lower end of the second sealing ring 4 is smaller than that of the upper end. When the sealing member 6 is mounted on the mounting seat 5, as the sealing member 6 approaches the mounting seat 5 downward, the second sealing ring 4 will first fall into the inner side of the first sealing ring 3, thereby realizing the abutting of the first sealing ring 3 and the second sealing ring 4. Therefore, the arrangement of the first abutting surface 31 facilitates the mounting of the second sealing ring 4.

[0034] The mounting seat 5 is integrally formed with a limiting ring 51 on the inner side of the first sealing ring 3. The circumferential direction of the limiting ring 51 is in contact with the inner wall of the second abutting surface 41. Since the mounting seat 5 is located on the inner side of the first sealing ring 3 and the limiting ring 51 is present, when the second sealing ring 4 is mounted in the mounting seat 5 and in contact with the inner wall of the first sealing ring 3, the outer side of the second sealing ring 4 will be in contact with the inner wall of the limiting ring 51, thereby enabling the second sealing ring 4 to be stably positioned between the first sealing ring 3 and the limiting ring 51.

[0035] In addition, the cover 7 is downwardly protrudingly provided with a plug column 71, the sealing member 6 is provided with a first insertion slot 61 for the plug column 71 to be mounted in the inner side of the limiting ring 51, and the mounting seat 5 is provided with a second insertion slot 52 corresponding to the first insertion slot 61, the second insertion slot 52 being in communication with the oil filling port 21. The design of the plug column 71, the first insertion slot 61 and the second insertion slot 52 facilitates the connection between the cover 7 and the sealing member 6, and enables the relative correct positions of the cover 7 and the sealing member 6 to be determined more quickly, thereby facilitating the assembly of the parts of the cleaning cover body 1.

[0036] The plug column 71 is provided with a matching groove 711, and a plurality of flow guides 72 are detachably mounted on the plug column 71. Each flow guide 72 is located in the matching groove 711 and is arranged in the circumferential direction. The arrangement of the flow guides 72 can effectively improve the strength of the plug column 71, and when the gasoline is shaken and falls into the matching groove 711, the gasoline will fall on the flow guides 72, thereby reducing the possibility of falling on the inner wall of the plug column 71.

[0037] Preferably, each of the flow guides 72 comprises an upper guide section 721 and a lower guide section 722, each of the upper guide sections 721 is arranged from outside to inside in an inclined manner from top to bottom, and each of the lower guide sections 722 is arranged from inside to outside in an inclined manner from top to bottom. The flow guide 72 is divided into the upper guide section 721 and the lower guide section 722, which are arranged in different directions, respectively. This helps the gasoline falling into each lower guide section 722 in a downward direction to fall along the inclined direction of the lower guide section 722 to the oil filling port 21. However, when the vehicle is suddenly braked or passes through a bumpy section to cause the body to shake, if the oil tank 2 is shaken to cause the gasoline to be shaken and splashed onto the cover body 7, the gasoline falling onto the lower end surface of the cover body 7 will flow downward along the shape of the flow guide 73 under the action of gravity and is difficult to approach the cover body 7 in an upward direction.

[0038] In the present application, the insertion column 71 is provided with a flow guide protrusion 73 above the matching groove 711, each of the flow guide protrusions 73 is fixed to the cover body 7 and each of the flow guide protrusions 73 is arranged in a semi-spherical shape with an opening facing upward. If the vehicle is suddenly braked or passes through a bumpy section to cause the body to shake, if the oil tank 2 is shaken to cause the gasoline to be shaken and splashed onto the cover body 7, at this time, since each of the flow guide protrusions is arranged in a semi-spherical shape with an opening facing upward, the gasoline falling onto the lower end surface of the cover body 7 will flow downward along the shape of the flow guide protrusion 73 and return to the oil filling port 21.

[0039] In addition, the cover body 7 is rotatably installed on the sealing member 6, the sealing member 6 is protrusively provided with a disassembly and assembly plug 62 made of a material easy to deform on the rotation track of the cover body 7, the cover body 7 comprises a disassembly plate 74 for accommodating the disassembly and assembly plug 62, the disassembly and assembly plug 62 comprises an upper connecting section 621 and a lower connecting section 622, the width of the upper connecting section 621 is greater than that of the lower connecting section 622, the disassembly plate 74 is provided with an upper connecting groove 741 and a lower connecting groove 742 corresponding to the upper connecting section 621 and the lower connecting section 622, respectively, and the disassembly plate 74 is provided with a limiting block 743 abutting against the upper connecting section 621 in the lower connecting groove 742. By separating the disassembly plate 74 and the disassembly and assembly plug 62, the cover body 7 can be rotated upward to guide the gasoline into the oil filling port 21, and after the cover body 7 is rotated downward, the disassembly plate 74 can be brought close to the disassembly and assembly plug 62. Since the width of the upper connecting section 621 of the disassembly and assembly plug 62 is greater than that of the lower connecting section 622, and the upper connecting section 621 will first enter the upper connecting groove 741, it is necessary to forcibly press the upper connecting section 621 to make it pass through the upper connecting groove 741 and fall into the lower connecting groove 742. At this time, the sealing member 6 can be stably connected with the cover body 7 without the action of external force.

[0040] The above description of disclosed embodiments enables one of ordinary skill in the art to make or use the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A fuel tank cleaning cap with oil leakage prevention function, comprising a cleaning cap body and a fuel tank, wherein the cleaning cap body is located above the fuel tank and is detachably connected to the fuel tank, characterized in that: It also includes a first sealing ring and a second sealing ring. The cleaning cover body includes a mounting base welded to the oil tank, a sealing element located above the mounting base and fixed to the mounting base, and a cover body detachably connected to the sealing element. The oil tank is provided with an oil filling port. The upward projection of the oil filling port falls on the bottom of the cover body. The first sealing ring is located on the inner wall of the mounting base, and the second sealing ring is located on the sealing element and is circumferentially fitted to the inner wall of the first sealing ring.

2. The oil tank cleaning cap with oil leakage prevention function according to claim 1, characterized in that: The first sealing ring includes an inner first contact surface, which is inclined from top to bottom and from the outside to the inside. The second sealing ring includes a second contact surface that contacts the first contact surface.

3. The oil tank cleaning cover with oil leakage prevention function according to claim 2, characterized in that: The mounting base is integrally formed with a limiting ring on the inner side of the first sealing ring, and the circumferential direction of the limiting ring abuts against the inner wall of the second mating surface.

4. The oil tank cleaning cover with oil leakage prevention function according to claim 3, characterized in that: The cover protrudes downwards and has a plug. The sealing element is located inside the limiting ring and has a first slot for inserting the plug. The mounting base has a second slot corresponding to the first slot, and the second slot is connected to the oil filling port.

5. The oil tank cleaning cover with oil leakage prevention function according to claim 4, characterized in that: The insertion post is provided with a mating groove, and several flow guides are detachably installed on the insertion post. Each flow guide is located in the mating groove and is arranged at intervals along the circumference.

6. The oil tank cleaning cover with oil leakage prevention function according to claim 5, characterized in that: Each of the aforementioned guide components includes an upper guide section and a lower guide section. Each of the upper guide sections is inclined from top to bottom and from the outside to the inside, and each of the lower guide sections is inclined from top to bottom and from the inside to the outside.

7. The oil tank cleaning cover with oil leakage prevention function according to claim 4, characterized in that: The insert is provided with guide protrusions above the mating groove. Each guide protrusion is fixed to the cover and is a hemispherical shape with its opening facing upwards.

8. The oil tank cleaning cover with oil leakage prevention function according to claim 1, characterized in that: The cover is rotatably mounted on the sealing element. The sealing element is provided with a disassembly and assembly block made of a material that is prone to deformation on the rotation trajectory of the cover. The cover includes a disassembly and assembly plate for the disassembly and assembly block to be inserted. The disassembly and assembly block includes an upper connecting section and a lower connecting section. The width of the upper connecting section is greater than that of the lower connecting section. The disassembly and assembly plate is provided with an upper connecting groove and a lower connecting groove corresponding to the upper connecting section and the lower connecting section, respectively.

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