Fastening and sealing accessory for refueling of refueling gun

Abstract

The utility model relates to the technical field of refueling auxiliary accessories. A fastening and sealing accessory for refueling of a refueling gun comprises a sleeve and a connecting pipe, external threads are arranged on the outer side face of the connecting pipe, internal threads in threaded connection with the external threads are arranged on the inner side wall of the end of the sleeve, a cover communicated with the connecting pipe is arranged at the end, away from the sleeve, of the connecting pipe, and a plurality of protruding blocks extending along the pipe wall of the connecting pipe are arranged on the inner side wall of the connecting pipe. And every two convex blocks are symmetrically arranged in the radial direction. The utility model has the beneficial effects that the accessory can prevent oil gas from leaking to the external environment when the oil gun refuels a vehicle body, so as to prevent environmental pollution and safety accidents from being caused.

Description

Technical Field

[0001] This utility model relates to the technical field of refueling auxiliary accessories, specifically to a fastening and sealing accessory used when refueling with a refueling nozzle. Background Technology

[0002] Gasoline is a volatile, flammable liquid mixture of hydrocarbons obtained through fractionation and cracking of petroleum, widely used as fuel for motorcycles, automobiles, and other vehicles. When refueling a vehicle, gas station personnel typically open the fuel tank cap, insert the fuel nozzle into the tank opening, and directly pour in gasoline. During this process, due to the significant gap between the nozzle and the tank opening, and the displacing of gas by the liquid, vaporized gasoline fumes leak into the environment. This can easily cause environmental pollution and, in severe cases, even safety accidents, posing risks such as health hazards, fires, explosions, and excessive fuel consumption. Summary of the Invention

[0003] The purpose of this utility model is to provide a fastening and sealing accessory for refueling with a fuel nozzle, which can prevent oil and gas from leaking into the external environment while the fuel nozzle is refueling the vehicle, thus preventing environmental pollution and safety accidents.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A fastening and sealing fitting for use when refueling with a fuel nozzle includes a sleeve and a connecting tube. The outer side of the connecting tube is provided with an external thread, and the inner side wall of the end of the sleeve is provided with an internal thread that is screwed into the external thread. The end of the connecting tube away from the sleeve is provided with a cover that communicates with it. The inner side wall of the connecting tube is provided with a plurality of protrusions extending along its wall, and the plurality of protrusions are arranged radially symmetrically in pairs.

[0006] Furthermore, the end of the protrusion furthest from the cover is provided with a ramp.

[0007] Furthermore, the end face of the opening of the cover is set as an inclined surface.

[0008] Furthermore, the cover is made of a transparent material.

[0009] Furthermore, the end of the sleeve away from the connecting pipe is provided with a protruding ring that protrudes towards the center.

[0010] Furthermore, the inner wall of the convex ring is provided with a mounting groove, and a sealing ring is provided in the mounting groove.

[0011] Furthermore, the sleeve is made of metal.

[0012] Furthermore, the connecting tube and cover are made of silicone material.

[0013] The beneficial effects of this utility model are as follows: This accessory is used in conjunction with a fuel nozzle. It can be fitted onto the nozzle barrel. When the nozzle barrel is inserted into the fuel tank opening of the vehicle, the cover can close the opening, creating a seal and preventing fuel vapor leakage, thus preventing environmental pollution and safety accidents, and improving the fuel vapor recovery effect during refueling. This accessory can be freely and quickly inserted and removed from the fuel nozzle, facilitating cleaning and replacement, improving refueling efficiency, and reducing operational risks at gas stations. Attached Figure Description

[0014] Figure 1 This is a cross-sectional view of a fastening and sealing accessory used in refueling with a fuel nozzle according to this utility model.

[0015] Figure 2 This is a cross-sectional view of the fastening and sealing fittings assembled on the fuel nozzle. Detailed Implementation

[0016] The technical solutions in the embodiments of this utility model will now be described with reference to the accompanying drawings.

[0017] like Figure 1 and Figure 2 As shown, a fastening and sealing fitting for refueling with a fuel nozzle includes a sleeve 1 and a connecting pipe 2. The outer side of the connecting pipe 2 is provided with an external thread 3. The inner side wall of the end of the sleeve 1 is provided with an internal thread 4 that is screwed into the external thread 3. The end of the connecting pipe 2 away from the sleeve 1 is provided with a cover 5 that communicates with it. The inner side wall of the connecting pipe 2 is provided with a plurality of protrusions 6 extending along its pipe wall, and the plurality of protrusions 6 are arranged radially symmetrically between each other.

[0018] In this embodiment, this accessory is used in conjunction with the fuel nozzle 11. The nozzle 12 of the fuel nozzle 11 passes through the sleeve 1, the connecting pipe 2, and the cover 5 in sequence, and then is inserted into the fuel tank opening of the vehicle body. The cover 5 fits against the surface of the vehicle body and seals the fuel tank opening, effectively preventing oil vapor evaporation and leakage, preventing environmental pollution and safety accidents. This accessory can be quickly inserted and removed from the nozzle 12 of the fuel nozzle 11, which facilitates cleaning and replacement of the accessory, improves refueling efficiency, and reduces operational risks at the gas station. The overall production cost is low and it is suitable for large-scale production.

[0019] It should be noted that the sleeve 1 and the connecting pipe 2 are screwed together, which can achieve a good sealing effect and effectively prevent oil and gas from leaking from the joint of the sleeve 1 and the connecting pipe 2. At the same time, the sleeve 1 and the connecting pipe 2 can be freely assembled and separated. When the sleeve 1 or the connecting pipe 2 is damaged, it can be directly replaced, which is not only convenient for replacement, but also reduces replacement costs.

[0020] It should be noted that the multiple protrusions 6 are used to fix the nozzle 12 of the fuel nozzle 11, preventing it from rotating or moving freely, ensuring that the fuel nozzle 11 is in the optimal refueling position, thereby ensuring the smoothness and safety of refueling; in addition, when the nozzle 12 of the fuel nozzle 11 is placed inside the connecting pipe 2, the two protrusions 6 and the nozzle 12 will form an oil and gas recovery channel. After the fuel nozzle 11 refuels, it can absorb and recover the leaked oil and gas through the oil and gas recovery channel, reducing the degree of oil and gas splashing and increasing the speed of oil and gas absorption.

[0021] The protrusion 6 has a ramp 7 at the end away from the cover 5. When the nozzle 12 of the refueling gun 11 is inserted into the connecting pipe 2, the ramp 7 is used to guide the nozzle 12 to slide to a suitable position, so as to achieve the effect of being fixed and clamped by multiple protrusions 6.

[0022] The cover 5 is made of transparent material. The transparent cover 5 allows operators to directly observe the oil filling process and prevents gasoline from leaking or dripping.

[0023] The end face of the opening of the cover 5 is set as an inclined surface. The inclined surface of the cover 5 is designed to match the inclination of the vehicle body shell surface to prevent oil and gas leakage due to gaps when it is fitted.

[0024] The sleeve 1 has a protruding ring 8 at the end away from the connecting pipe 2. When the nozzle 12 of the fuel nozzle 11 is inserted into the sleeve 1, the protruding ring 8 fits tightly with the nozzle 12 to achieve a sealing effect and prevent oil and gas from leaking out.

[0025] The inner sidewall of the convex ring 8 is provided with a mounting groove 9, and a sealing ring 10 is provided in the mounting groove. The sealing ring 10 is installed in the mounting groove 9 on the inner sidewall of the convex ring 8, and the sealing ring 10 can fit tightly against the outer wall of the nozzle 12 of the fuel nozzle 11 to achieve a better sealing effect.

[0026] The sleeve 1 is made of metal.

[0027] The connecting pipe 2 and the cover 5 are both made of rubber material.

Claims

1. A fastening and sealing fitting for use with a fuel nozzle during refueling, comprising a sleeve (1) and a connecting pipe (2), characterized in that: The outer side of the connecting pipe (2) is provided with an external thread (3), the inner side wall of the end of the sleeve (1) is provided with an internal thread (4) that is screwed into the external thread (3), the end of the connecting pipe (2) away from the sleeve (1) is provided with a cover (5) that communicates with it, and the inner side wall of the connecting pipe (2) is provided with a plurality of protrusions (6) that extend along its pipe wall, and the plurality of protrusions (6) are arranged radially symmetrically between each other.

2. The fastening and sealing fitting for refueling with a fuel nozzle according to claim 1, characterized in that: The protrusion (6) is provided with a ramp (7) at the end away from the cover (5).

3. The fastening and sealing fitting for refueling with a fuel nozzle according to claim 1, characterized in that: The end face of the opening of the cover (5) is set as an inclined surface.

4. The fastening and sealing fitting for refueling with a fuel nozzle according to claim 1, characterized in that: The cover (5) is made of transparent material.

5. The fastening and sealing fitting for refueling with a fuel nozzle according to claim 1, 2 or 3, characterized in that: The sleeve (1) is provided with a protruding ring (8) at the end away from the connecting pipe (2) that protrudes toward the center.

6. The fastening and sealing fitting for refueling with a fuel nozzle according to claim 5, characterized in that: The inner wall of the convex ring (8) is provided with an installation groove (9), and a sealing ring (10) is provided in the installation groove.

7. The fastening and sealing fitting for refueling with a fuel nozzle according to claim 5, characterized in that: The sleeve (1) is made of metal.

8. The fastening and sealing fitting for refueling with a fuel nozzle according to claim 1, 2, 3 or 4, characterized in that: The connecting tube (2) and the cover (5) are both made of silicone material.

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