Oil filling port of oil tank

Abstract

The utility model relates to the technical field of automobile oil tanks, in particular to an oil tank oil filling port which comprises an oil port pipe, a protruding block is fixedly installed on the oil port pipe, a through hole is formed in the oil port pipe, a connecting frame is installed at the position of the through hole of the oil port pipe, a check ring is fixedly installed on the connecting frame, and a filter is connected to the connecting frame in a sleeved mode. The filter is located in the connecting frame and connected to the oil port pipe through a sealing cover, and a backflow preventing assembly is installed at the position, close to the oil tank, in the oil port pipe. The filter is installed at the oil filling port of the device, large particulate matter can be filtered out, in order to guarantee the sealing performance of the oil filling port, the sealing ring is arranged on the sealing cover, the filter, the connecting frame and the sealing cover are convenient to disassemble, and the device is convenient to clean or replace regularly; and through the arranged backflow prevention assembly, when gasoline flows back, the core body can abut against the gasoline inlet to prevent backflow, and the phenomenon of gasoline stealing can be effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile oil tanks, in particular to an oil tank filling port. Background Art

[0002] With the application and development of various new materials, the rust prevention problem of iron fuel tanks has become the biggest problem of fuel tank quality. Aluminum alloy fuel tanks not only meet the strength requirements but also have great advantages in corrosion resistance over iron and other new materials. They have also become the first choice for large buses and heavy trucks that have high fuel consumption and high requirements for fuel quality. The aluminum alloy fuel tank port and steel fuel tank end cover will cause the aluminum alloy to wear quickly during use, and it is easy to cause problems such as the oil cap getting stuck and the sealing being poor.

[0003] The patent with publication number CN201970854U discloses a connection structure of an aluminum alloy fuel tank refueling port, including an aluminum alloy fuel tank body and its refueling port, the lower side of the refueling port is provided with an outward flange, the cylinder wall above the flange is provided with an outward expansion step, the expansion step and the flange form a slot, the slot and the mouth of the aluminum alloy fuel tank are formed by riveting, and the riveting combination is adopted to solve the connection of two different materials and realize a firmly connected combination, but the refueling port of a general aluminum alloy fuel tank is usually just sealed by snapping the oil cap, and the sealing is poor. The shaking of the fuel tank during the driving of the car causes the gasoline to easily leak out, and the fuel tank refueling port is needed to solve this problem. Utility Model Content

[0004] The purpose of the utility model is to provide a fuel tank refueling port to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a fuel tank filling port, comprising an oil port pipe, a protrusion is fixedly installed on the oil port pipe, a through hole is opened on the oil port pipe, a connecting frame is installed at the through hole of the oil port pipe, a retaining ring is fixedly installed on the connecting frame, a filter is sleeved on the connecting frame, the filter is inside the connecting frame and is connected to the oil port pipe through a sealing cover, and an anti-backflow component is installed inside the oil port pipe near the oil tank.

[0006] As a preferred technical solution of the utility model, a fixed block is installed on the anti-backflow assembly, an oil inlet is opened at the upper end of the fixed block, a core is installed at the bottom of the oil inlet, and a spring is installed between the bottom of the core and the fixed block.

[0007] As a preferred technical solution of the utility model, a plurality of oil outlet holes are provided on the core body, and one side of the oil outlet holes is in communication with the oil outlet channel.

[0008] As a preferred technical solution of the utility model, the oil port pipe is provided with external thread teeth on the pipe mouth, the sealing cover is provided with internal thread grooves, and the sealing cover is threadedly connected with the external thread teeth on the oil port pipe through the internal thread grooves.

[0009] As a preferred technical solution of the utility model, a sealing ring is installed in the sealing cover, and the sealing ring is made of rubber material.

[0010] As a preferred technical solution of the utility model, filter holes are provided at the bottom and around the filter, and an opening is provided at the bottom of the connecting frame, and the opening is in communication with the filter holes.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] (1) The utility model is a fuel tank refueling port. A filter is installed at the refueling port of the device to filter out larger particles. In order to ensure the sealing of the refueling port, a sealing ring is provided on the sealing cover. The filter, the connecting frame and the sealing cover are easy to disassemble, so that they can be cleaned or replaced regularly. When gasoline refluxes, the core of the anti-backflow component is set to resist the oil inlet to prevent backflow, which can also effectively prevent the phenomenon of oil theft. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a structural schematic diagram of a fuel tank refueling port according to an embodiment of the utility model;

[0015] Figure 2 It is a schematic diagram of the structure inside the fuel tank refueling port according to an embodiment of the utility model;

[0016] Figure 3 According to the utility model Figure 2 Schematic diagram of the structure enlarged at point A in the middle.

[0017] Reference numerals:

[0018] 1. Oil inlet pipe; 2. Bump; 3. External thread teeth; 4. Through hole; 5. Connecting frame; 6. Retaining ring; 7. Filter; 8. Filter hole; 9. Sealing ring; 10. Sealing cover; 11. Internal thread groove; 12. Opening; 13. Anti-backflow assembly; 14. Fixing block; 15. Oil inlet; 16. Core; 17. Oil outlet hole; 18. Oil outlet channel; 19. Spring. DETAILED DESCRIPTION

[0019] Below, in conjunction with the accompanying drawings and specific implementation methods, the utility model is further described:

[0020] Example 1

[0021] refer to Figure 1 to Figure 2 Embodiment 1 is described, comprising an oil inlet pipe 1, on which a protrusion 2 is fixedly mounted, on which a through hole 4 is provided, a connecting frame 5 is installed at the through hole 4 of the oil inlet pipe 1, on which a retaining ring 6 is fixedly mounted, on which a filter 7 is sleeved, the filter 7 is inside the connecting frame 5 and is connected to the oil inlet pipe 1 through a sealing cover 10, an anti-backflow component 13 is installed inside the oil inlet pipe 1 near the oil tank, an external threaded tooth 3 is installed on the pipe mouth of the oil inlet pipe 1, an internal threaded groove 11 is installed in the sealing cover 10, the sealing cover 10 is threadedly connected to the external threaded tooth 3 on the oil inlet pipe 1 through the internal threaded groove 11, a sealing ring 9 is installed in the sealing cover 10, and the sealing ring 9 is made of rubber material, filter holes 8 are provided at the bottom and around the filter 7, an opening 12 is provided at the bottom of the connecting frame 5, and the opening 12 is in a connected state with the filter hole 8;

[0022] In this embodiment, filter holes 8 are provided at the bottom and around the filter 7 to ensure rapid filtration and prevent overflow due to gasoline accumulation in the filter 7 during refueling.

[0023] Example 2

[0024] refer to Figure 2 to Figure 3 Example 2 is described. This embodiment further describes Example 1, including a backflow prevention component 13, a fixed block 14 is installed on the backflow prevention component 13, an oil inlet 15 is opened at the upper end of the fixed block 14, a core 16 is installed at the bottom of the oil inlet 15, a spring 19 is installed between the bottom end of the core 16 and the fixed block 14, a plurality of oil outlet holes 17 are opened on the core 16, and one side of the oil outlet hole 17 is in a connected state with the oil outlet channel 18;

[0025] In this embodiment, the anti-backflow component 13 is set to give a downward force to the core 16 tightly fitted to the oil inlet 15 when gasoline enters the oil inlet 15. The gasoline enters the core through the oil inlet 15 and squeezes the core 16, and flows into the oil outlet channel 18 through the oil outlet hole 17. When the gasoline refluxes, the core 16 will press against the oil inlet 15 to prevent backflow.

[0026] In specific applications, a filter 7 is installed at the refueling port of the device to filter the incoming gasoline and filter out larger particles. The filter 7 is located in the connecting frame 5. The bottom and surrounding of the filter 7 are provided with filter holes 8 to ensure rapid filtration and prevent gasoline from accumulating in the filter 7 during refueling and causing overflow. In order to ensure the sealing of the oil port pipe 1, a sealing ring 9 is provided on the sealing cover 10. The filter 7, the connecting frame 5 and the sealing cover 10 are easy to disassemble, so that they can be cleaned or replaced regularly. An anti-backflow component 13 is provided at the connection between the pipe 1 and the fuel tank to effectively prevent the fuel tank from shaking and causing gasoline to leak out easily. The setting of the anti-backflow component 13 will give a downward force to the core 16 that is tightly fitted to the fuel inlet 15 when the gasoline enters the fuel inlet 15. Since a spring 19 is installed at the bottom of the core 16, the core 16 will move downward, and the gasoline enters the core through the fuel inlet 15 and flows into the oil outlet channel 18 through the oil outlet hole 17. When the gasoline refluxes, the core 16 will resist the fuel inlet 15 to prevent reflux, effectively ensuring the practicality of the fuel tank refueling port.

[0027] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "top", "bottom", "one side", "the other side", "front", "back", "middle part", "inside", "top end", "bottom end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a communication between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A fuel tank refueling port, characterized in that: The invention comprises an oil inlet pipe (1), a protrusion (2) is fixedly mounted on the oil inlet pipe (1), a through hole (4) is opened on the oil inlet pipe (1), a connecting frame (5) is mounted at the through hole (4) of the oil inlet pipe (1), a retaining ring (6) is fixedly mounted on the connecting frame (5), a filter (7) is sleeved on the connecting frame (5), the filter (7) is inside the connecting frame (5) and is connected to the oil inlet pipe (1) through a sealing cover (10), and a backflow prevention component (13) is mounted inside the oil inlet pipe (1) near the oil tank.

2. The fuel tank refueling port according to claim 1, characterized in that: A fixing block (14) is mounted on the anti-backflow assembly (13); an oil inlet (15) is formed at the upper end of the fixing block (14); a core (16) is mounted at the bottom end of the oil inlet (15); and a spring (19) is mounted between the bottom end of the core (16) and the fixing block (14).

3. The fuel tank refueling port according to claim 2, characterized in that: The core (16) is provided with a plurality of oil outlet holes (17), and one side of the oil outlet holes (17) is in communication with the oil outlet channel (18).

4. The fuel tank refueling port according to claim 1, characterized in that: The oil port pipe (1) is provided with external thread teeth (3) on the pipe mouth, the sealing cover (10) is provided with internal thread grooves (11) in the sealing cover (10), and the sealing cover (10) is threadedly connected to the external thread teeth (3) on the oil port pipe (1) via the internal thread grooves (11).

5. The fuel tank refueling port according to claim 1, characterized in that: A sealing ring (9) is installed inside the sealing cover (10), and the sealing ring (9) is made of rubber material.

6. The fuel tank refueling port according to claim 1, characterized in that: The filter (7) is provided with filter holes (8) at the bottom and around the periphery, and the connecting frame (5) is provided with an opening (12) at the bottom, and the opening (12) is in a communicating state with the filter holes (8).

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