Drip-proof device of aircraft fuel oil filling gun

Abstract

The utility model relates to the technical field of fuel oil filling guns, in particular to a drip-proof device of an airplane fuel oil filling gun. The technical problems that according to an existing fuel oil filling gun, a fuel oil filling hose is usually adopted for filling fuel oil, due to the fact that part of parts are prone to aging and cracking after being used for a long time and abraded, leakage occurs in the oil filling process, the environment is polluted, the oil filling process is interrupted due to fuel oil leakage, the oil filling efficiency is reduced, and the oil filling time is prolonged are solved. According to the technical scheme, the anti-leakage device of the aircraft fuel oil filling gun comprises a gun body, an anti-leakage assembly and a transmission assembly; the butt joint pipe and the gun body are connected in a sealed mode by combining the connecting sleeve with the multiple sets of sealing rings, leakage of fuel oil caused by pressure changes or other factors in the refueling process is prevented, safety in the refueling process is guaranteed, and meanwhile the sealing rings can keep good sealing performance under different pressure and temperature conditions.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel oil filling guns, in particular to a drip-proof device for an aircraft fuel oil filling gun. Background Art

[0002] An aircraft fuel oil filling gun is a device specifically used for filling fuel into an aircraft. The filling gun needs to match the fuel filling port of the aircraft fuel tank to ensure that the fuel can be accurately, efficiently and safely injected. The design requirements of the aircraft fuel oil filling gun are very strict and must comply with aviation safety regulations to ensure the safety and reliability of the filling process. In the existing fuel oil filling guns, during the filling process, fuel is usually filled through a filling hose. Due to the wear of some parts after long-term use, they are prone to aging and cracking, resulting in leakage during filling, polluting the environment, and the fuel leakage will interrupt the filling process, leading to a decrease in filling efficiency and an increase in filling time. Therefore, we propose a drip-proof device for an aircraft fuel oil filling gun to solve the problems mentioned above. Content of the Utility Model

[0003] In order to overcome the problems of the existing fuel oil filling guns, which usually fill fuel through a filling hose. Due to the wear of some parts after long-term use, they are prone to aging and cracking, resulting in leakage during filling, polluting the environment, and the fuel leakage will interrupt the filling process, leading to a decrease in filling efficiency and an increase in filling time.

[0004] The technical solution of the utility model is as follows: a drip-proof device for an aircraft fuel oil filling gun, comprising a gun body, a leak-proof component and a transmission component; a leak-proof component for preventing fuel leakage during filling is installed at the lower end of the gun body, and a transmission component for ensuring the stable transmission of fuel from the filling gun to the aircraft fuel tank is installed at one end of the gun body.

[0005] Preferably, the docking pipe and the gun body are hermetically connected by using a connecting sleeve in combination with multiple groups of sealing rings, preventing fuel leakage caused by pressure changes or other factors during the refueling process, ensuring the safety of the refueling process. At the same time, the sealing rings can maintain good sealing performance under different pressure and temperature conditions. The connecting pipe is connected by using a snap ring according to different fuel transmissions, ensuring that the fuel nozzle can adapt to the transmission requirements of different fuel types and guaranteeing the smooth progress of the refueling process. When the docking pipe is used for a long time, it can be plugged and unplugged for replacement, avoiding equipment wear caused by long-term transmission and extending the service life of the fuel nozzle. Secondly, when the threaded ring is connected to the fuel transmission pipe, a sealing ring is used for secondary auxiliary sealing, providing double-layer sealing protection. At the same time, the threaded ring can effectively prevent the interface of the fuel transmission pipe from loosening due to vibration or pressure changes during the refueling process, reducing the impact on the environment and potential pollution risks. By using a ferrule to fix the sealing cover, an additional protective layer is formed during refueling, preventing fuel from leaking or being externally contaminated during the refueling process, ensuring a tight seal between the fuel nozzle and the aircraft fuel tank interface, reducing the risk of fuel leakage, and the limit bolt fixes the sealing cover, and different sealing covers can be replaced according to the size of the aircraft refueling port, making the replacement of the sealing cover more convenient, adapting to the refueling port sizes of different models of aircraft, and improving the versatility of the refueling equipment.

[0006] Preferably, the leak-proof component includes a docking pipe, a connecting sleeve, sealing rings, a snap ring, a connecting pipe, and a threaded ring. The docking pipe is located behind the gun body. A connecting sleeve is provided between the docking pipe and the gun body. The connecting sleeve passes through the gun body and extends to the inside. Multiple groups of sealing rings are provided on the outer wall of the connecting sleeve. The docking pipe and the gun body are hermetically connected by using a connecting sleeve in combination with multiple groups of sealing rings, preventing fuel leakage caused by pressure changes or other factors during the refueling process, ensuring the safety of the refueling process. At the same time, the sealing rings can maintain good sealing performance under different pressure and temperature conditions, making the refueling process smoother, preventing fuel leakage, and improving the overall sealing performance.

[0007] Preferably, a snap ring is provided inside the docking pipe, a limit groove is provided inside the snap ring, and a connecting pipe is provided inside the limit groove. The connecting pipe is connected and transmitted by using a snap ring according to different fuel transmissions, ensuring that the fuel nozzle can adapt to the transmission requirements of different fuel types and guaranteeing the smooth progress of the refueling process. When the docking pipe is used for a long time, it can be plugged and unplugged for replacement, avoiding equipment wear caused by long-term transmission and extending the service life of the fuel nozzle.

[0008] Preferably, a threaded ring is provided inside the docking pipe, and a sealing ring is provided at the connection between one side of the threaded ring and the snap ring. By using the threaded ring to connect the fuel transmission pipe and combining the sealing ring for secondary auxiliary sealing, double-layer sealing protection is provided, effectively preventing fuel leakage. At the same time, the threaded ring can effectively prevent the interface of the fuel transmission pipe from loosening due to vibration or pressure changes during the refueling process, preventing fuel leakage and reducing the impact on the environment and potential pollution risks.

[0009] Preferably, the transmission assembly includes a transmission pipe, a fixed head, a spring, a ferrule, a sealing cover, and a limit bolt. One end of the gun body is provided with a fixed head, one end of the fixed head is provided with a ferrule, and a sealing cover is provided at the end of the ferrule away from the fixed head. By using the ferrule to fix the sealing cover, an additional protective layer is formed during refueling to prevent fuel from leaking or being externally contaminated during the refueling process, ensuring a tight seal between the fueling gun and the aircraft fuel tank interface and reducing the risk of fuel leakage.

[0010] Preferably, a limit bolt is provided around the outer end of the ferrule, and the limit bolt passes through the ferrule and extends to the inside. The sealing cover is fixedly connected to the ferrule through the limit bolt. By using the limit bolt to fix the sealing cover and being able to replace different sealing covers according to the size of the aircraft refueling port, the replacement of the sealing cover becomes more convenient, adapting to the refueling port sizes of different types of aircraft and improving the versatility of the refueling equipment.

[0011] Preferably, a transmission pipe is provided inside the ferrule at the end of the fixed head away from the gun body. A spring is sleeved on the outer end of the transmission pipe, and a damper is provided inside the spring. By using the ferrule in combination with the fixed head to fix the transmission pipe, the stable connection of the transmission pipe during the refueling process is ensured, avoiding loosening caused by vibration or pressure changes and improving the overall stability.

[0012] The beneficial effects of the present utility model are as follows:

[0013] 1. Compared with traditional fueling guns, by using a connecting sleeve in combination with multiple sealing rings to seal and connect the docking pipe and the gun body, fuel leakage caused by pressure changes or other factors during the refueling process is prevented, ensuring the safety of the refueling process. At the same time, the sealing rings can maintain good sealing performance under different pressure and temperature conditions. The connecting pipe is connected by using a snap ring according to different fuel transmissions, ensuring that the fueling gun can adapt to the transmission requirements of different fuel types and guaranteeing the smooth progress of the refueling process. When the docking pipe has been used for a long time, it can be unplugged and replaced to avoid equipment wear caused by long-term transmission, extending the service life of the fueling gun. Secondly, when the threaded ring connects the fuel transmission pipe, it combines with the sealing ring for secondary auxiliary sealing, providing double-layer sealing protection. At the same time, the threaded ring can effectively prevent the interface of the fuel transmission pipe from loosening due to vibration or pressure changes during the refueling process, reducing the impact on the environment and potential pollution risks.

[0014] 2. By using a ferrule to fix the sealing cover, an additional protective layer is formed during refueling to prevent fuel from leaking or being externally contaminated during the refueling process, ensuring a tight seal at the interface between the fuel nozzle and the aircraft fuel tank, reducing the risk of fuel leakage. Moreover, the limiting bolt fixes the sealing cover, and different sealing covers can be replaced according to the size of the aircraft fuel filling port, making the replacement of the sealing cover more convenient, adapting to the fuel filling port sizes of different types of aircraft, and improving the versatility of the refueling equipment. Brief Description of the Drawings

[0015] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0016] Figure 2 It is a schematic diagram of the leak-proof component structure of the present utility model;

[0017] Figure 3 It is a schematic diagram of the transmission component structure of the present utility model;

[0018] Figure 4 It is a schematic diagram of the bottom structure of the gun body of the present utility model.

[0019] Description of the reference numerals: 1. Gun body; 2. Leak-proof component; 201. Docking pipe; 202. Connecting sleeve; 203. Sealing ring; 204. Snap ring; 205. Connecting pipe; 206. Threaded ring; 3. Transmission component; 301. Transmission pipe; 302. Fixed head; 303. Spring; 304. Ferrule; 305. Sealing cover; 306. Limiting bolt. Detailed Description of the Preferred Embodiments

[0020] The present utility model will be further described below with reference to the drawings and embodiments.

[0021] Please refer to Figures 1-4 , the present utility model provides an embodiment: A drip-proof device for an aircraft fuel nozzle, comprising a gun body 1, a leak-proof component 2, and a transmission component 3; a leak-proof component 2 for preventing fuel from leaking during refueling is installed at the lower end of the gun body 1, and a transmission component 3 for ensuring the stable transmission of fuel from the fuel nozzle to the aircraft fuel tank is installed at one end of the gun body 1.

[0022] Please refer to Figures 1-2, in this embodiment, the anti-leakage component 2 includes a docking pipe 201, a connecting sleeve 202, a sealing ring 203, a snap ring 204, a connecting pipe 205 and a threaded ring 206. The docking pipe 201 is located behind the gun body 1. There is a connecting sleeve 202 between the docking pipe 201 and the gun body 1. The connecting sleeve 202 passes through the gun body 1 and extends to the inside. Multiple groups of sealing rings 203 are provided on the outer wall of the connecting sleeve 202. By using the connecting sleeve 202 in combination with multiple groups of sealing rings 203, the docking pipe 201 and the gun body 1 are hermetically connected, preventing fuel leakage caused by pressure changes or other factors during the refueling process, ensuring the safety of the refueling process. At the same time, the sealing ring 203 can maintain good sealing performance under different pressure and temperature conditions, making the refueling process smoother, preventing fuel leakage, improving the overall sealing performance. There is a snap ring 204 inside the docking pipe 201, a limiting groove is provided inside the snap ring 204, and a connecting pipe 205 is provided inside the limiting groove. By using the snap ring 204 to replace and connect the connecting pipe 205 for transmission according to different fuel transmissions, it is ensured that the fueling gun can adapt to the transmission requirements of different fuel types and ensure the smooth progress of the fueling process. When the docking pipe 201 is used for a long time, it can be plugged and unplugged for replacement to avoid equipment wear caused by long-term transmission and extend the service life of the fueling gun.

[0023] Please refer to Figures 1-3 , in this embodiment, a threaded ring 206 is provided inside the docking pipe 201, and a sealing ring is provided at the connection between one side of the threaded ring 206 and the snap ring 204. By using the threaded ring 206 to connect to the fuel transmission pipe 301 and combining with the sealing ring for secondary auxiliary sealing, double-layer sealing protection is provided, effectively preventing fuel leakage. At the same time, the threaded ring 206 can effectively prevent the interface of the fuel transmission pipe 301 from loosening due to vibration or pressure changes during the refueling process, preventing fuel leakage and reducing the impact on the environment and potential pollution risks. The transmission component 3 includes a transmission pipe 301, a fixed head 302, a spring 303, a ferrule 304, a sealing cover 305 and a limit bolt 306. One end of the gun body 1 is provided with a fixed head 302, one end of the fixed head 302 is provided with a ferrule 304, and a sealing cover 305 is provided at the end of the ferrule 304 away from the fixed head 302. By using the ferrule 304 to fix the sealing cover 305 to form an additional protective layer during refueling, preventing fuel from leaking or being externally contaminated during the refueling process, ensuring the tight seal between the fueling gun and the aircraft fuel tank interface, and reducing the risk of fuel leakage.

[0024] Please refer to Figures 2-4, in this embodiment, a limit bolt 306 is disposed around the outer end of the ferrule 304. The limit bolt 306 passes through the ferrule 304 and extends to the inside. The sealing cover 305 is fixedly connected to the ferrule 304 through the limit bolt 306. By using the limit bolt 306 to fix the sealing cover 305, and different sealing covers 305 can be replaced according to the size of the aircraft fuel filling port, making the replacement of the sealing cover 305 more convenient, adapting to the fuel filling port sizes of different models of aircraft, improving the versatility of the fuel filling equipment. One end of the fixed head 302 away from the gun body 1 is provided with a transmission pipe 301 inside the ferrule 304. A spring 303 is sleeved on the outer end of the transmission pipe 301, and a damper is provided inside the spring 303. By using the ferrule 304 in combination with the fixed head 302 to fix the transmission pipe 301, it is ensured that the transmission pipe 301 is stably connected during the fuel filling process, avoiding loosening caused by vibration or pressure changes, and improving the overall stability.

[0025] When working, first, the connecting sleeve 202 is used in combination with multiple sealing rings 203 to seal and connect the docking pipe 201 to the gun body 1, preventing fuel leakage during the fuel filling process due to pressure changes or other factors. At the same time, the sealing rings 203 can maintain good sealing performance under different pressure and temperature conditions, making the fuel filling process smoother, preventing fuel leakage, and using the snap ring 204 to replace the connecting pipe 205 for connection and transmission according to different fuel transmissions, ensuring that the fuel filling gun can adapt to the transmission requirements of different fuel types. When the docking pipe 201 has been used for a long time, it can be unplugged and replaced to avoid equipment wear caused by long-term transmission. One end of the fuel pipe is butted against the thread ring 206, and a secondary auxiliary seal is combined with the sealing ring to provide double-layer seal protection, preventing the interface of the fuel transmission pipe 301 from loosening due to vibration or pressure changes during the fuel filling process, and realizing the sealed docking of the fuel pipe.

[0026] Secondly, during the fuel filling process, the ferrule 304 is used to fix the sealing cover 305 to form an additional protective layer during fuel filling, preventing fuel from leaking or being externally contaminated during the fuel filling process, ensuring a tight seal between the fuel filling gun and the aircraft fuel tank interface, reducing the risk of fuel leakage. According to the size of the aircraft fuel filling port, the sealing cover 305 is fixed and replaced using the limit bolt 306, making the replacement of the sealing cover 305 more convenient, adapting to the fuel filling port sizes of different models of aircraft, and meeting the anti-drip protection of the fuel filling gun.

[0027] Through the above steps, the docking pipe 201 is hermetically connected to the gun body 1 by using the connecting sleeve 202 in combination with multiple groups of sealing rings 203, preventing fuel leakage caused by pressure changes or other factors during the refueling process, ensuring the safety of the refueling process. At the same time, the sealing ring 203 can maintain good sealing performance under different pressure and temperature conditions. The snap ring 204 is used to replace the connecting pipe 205 according to different fuel transmissions, ensuring that the fueling gun can adapt to the transmission requirements of different fuel types and guaranteeing the smooth progress of the fueling process. When the docking pipe 201 is used for a long time, it can be plugged and unplugged for replacement, avoiding equipment wear caused by long-term transmission and extending the service life of the fueling gun. Secondly, when the threaded ring 206 is connected to the fuel transmission pipe 301, a secondary auxiliary seal is carried out in combination with the sealing ring, providing double-layer seal protection. At the same time, the threaded ring 206 can effectively prevent the interface of the fuel transmission pipe 301 from loosening due to vibration or pressure changes during the fueling process, reducing the impact on the environment and potential pollution risks. By using the ferrule 304 to fix the sealing cover 305, an additional protective layer is formed during fueling, preventing fuel from leaking or being externally contaminated during the fueling process, ensuring a tight seal at the interface between the fueling gun and the aircraft fuel tank, reducing the risk of fuel leakage, and the limit bolt 306 fixes the sealing cover 305, and different sealing covers 305 can be replaced according to the size of the aircraft fueling port, making the replacement of the sealing cover 305 more convenient, adapting to the fueling port sizes of different models of aircraft, and improving the versatility of the fueling equipment.

[0028] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the purpose of the present invention.

Claims

1. An anti-drip device for an aircraft fuel filling gun, comprising a gun body (1); characterized in that: It also includes a leak-proof component (2) and a transmission component (3); the lower end of the gun body (1) is equipped with a leak-proof component (2) for preventing fuel from leaking during the refueling process, and one end of the gun body (1) is equipped with a transmission component (3) for ensuring that the fuel is stably transmitted from the refueling gun to the aircraft fuel tank; The anti-leakage component (2) comprises a butt joint tube (201), a connecting sleeve (202), a sealing ring (203), a clamping ring (204), a connecting tube (205) and a threaded ring (206); the butt joint tube (201) is located at the rear of the gun body (1); a connecting sleeve (202) is provided between the butt joint tube (201) and the gun body (1); the connecting sleeve (202) passes through the gun body (1) and extends to the inside; a plurality of sealing rings (203) are provided on the outer wall of the connecting sleeve (202); A clamping ring (204) is provided inside the butt-jointing pipe (201), a limiting groove is provided inside the clamping ring (204), and a connecting pipe (205) is provided inside the limiting groove.

2. The anti-drip device for an aircraft fuel refueling gun according to claim 1, characterized in that: A threaded ring (206) is provided inside the butt-joint pipe (201), and a sealing ring is provided at the connection between one side of the threaded ring (206) and the clamping ring (204).

3. The anti-drip device for an aircraft fuel refueling gun according to claim 1, characterized in that: The transmission assembly (3) comprises a transmission tube (301), a fixed head (302), a spring (303), a ferrule (304), a sealing cover (305) and a limiting bolt (306); one end of the gun body (1) is provided with a fixed head (302), one end of the fixed head (302) is provided with a ferrule (304), and one end of the ferrule (304) away from the fixed head (302) is provided with a sealing cover (305).

4. The anti-drip device for an aircraft fuel refueling gun according to claim 3, characterized in that: A limiting bolt (306) is arranged around the outer end of the ferrule (304), and the limiting bolt (306) passes through the ferrule (304) and extends to the inside. The sealing cover (305) is fixedly connected to the ferrule (304) through the limiting bolt (306).

5. The anti-drip device for an aircraft fuel refueling gun according to claim 4, characterized in that: A transmission tube (301) is provided inside the ferrule (304) at one end of the fixed head (302) away from the gun body (1), and a spring (303) is sleeved on the outer end of the transmission tube (301), and a damper is provided on the inner side of the spring (303).

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