A drone refueling nozzle capable of automatically closing the nozzle channel
Patent Information
- Application Number
- CN202522074977.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-26
- Publication Date
- 2026-09-01
- Estimated Expiration
- 2035-09-26
AI Technical Summary
如果加油管道之内的止逆阀出现止逆作用不全的问题时，那么，加油管道之内的汽油有可能穿过止逆阀倒流至无人机受油嘴处，再从油嘴塞处往外流出，造成无人机漏油问题
[0006]本实用新型的有益效果时：本实用新型当进油插头往右插入至插孔之内时，能够推动阀芯往右滑动并使出油侧孔与出油内腔相连通，从而自动打通油嘴通道，此时，从进油插头之内输入的燃油首先进入阀芯，再从阀芯的出油侧孔进入出油套筒的出油内腔，再从出油套筒的出油管输出；本实用新型当进油插头从插孔之内往左拔出时，阀芯在弹簧的弹性作用下往左滑动，并使出油侧孔滑向阀芯通孔之内，出油侧孔与出油内腔断开连接，油嘴通道自动闭合，从而避免燃油从无人机受油嘴处往外流出的问题。
Smart Images
Figure CN224706390U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) technology, and in particular to a UAV fuel receiving nozzle that can automatically close the fuel nozzle channel. Background Technology
[0002] Unmanned aerial vehicles (UAVs), also known as drones, are unmanned aerial vehicles controlled by radio remote control equipment and their own program control devices. There are two main types of engines for UAVs: electric motors and gasoline engines. Fixed-wing UAVs typically use gasoline engines.
[0003] Drones powered by gasoline engines are equipped with a fuel tank and a refueling pipeline. The refueling pipeline has a refueling nozzle, which allows fuel to be supplied to the tank. In existing technology, the drone's refueling pipeline typically has a check valve to prevent gasoline backflow. However, the refueling nozzle lacks an automatic closing function. When the fuel inlet plug is removed from the refueling nozzle, the nozzle does not automatically close; instead, the nozzle plug alone seals the inlet. If the check valve in the refueling pipeline malfunctions, gasoline may flow back through the valve to the refueling nozzle and then leak out through the plug, causing a fuel leak. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide a drone fuel receiving nozzle that can automatically close the fuel nozzle channel, based on the shortcomings of the prior art. When the fuel inlet plug is inserted, the fuel receiving nozzle can automatically open the fuel nozzle channel, and when the fuel inlet plug is pulled out, it can automatically close the fuel nozzle channel to prevent fuel from flowing out of the drone fuel receiving nozzle.
[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is: a drone refueling nozzle capable of automatically closing the nozzle channel, comprising an inlet sleeve, an outlet sleeve, a valve core, a spring, and an inlet plug. The left end of the inlet sleeve has an insertion hole, and the right end of the inlet sleeve has a valve core through hole communicating with the insertion hole. The valve core is installed within the valve core through hole and can slide left and right along the through hole. An inlet hole is provided inside the valve core, and an outlet side hole communicating with the inlet hole is provided on the side of the valve core. The right end of the valve core is closed, and an annular protrusion is provided on the side of the right end of the valve core, located to the right of the outlet side hole. The left end of the outlet sleeve is fitted over the right end of the inlet sleeve, and the outlet... The oil sleeve has an oil outlet cavity. The right end of the valve core extends into the oil outlet cavity. The spring is installed inside the oil outlet cavity, and the left end of the spring elastically abuts against the right side of the annular protrusion. The right end of the oil outlet sleeve is connected to an oil outlet pipe that communicates with the oil outlet cavity. The oil inlet plug can be inserted to the right into the socket or pulled out to the left from the socket. When the oil inlet plug is inserted to the right into the socket, it can push the valve core to slide to the right and connect the oil outlet side hole with the oil outlet cavity. When the oil inlet plug is pulled out to the left from the socket, the valve core slides to the left under the elastic action of the spring and the oil outlet side hole slides into the valve core through hole, disconnecting the oil outlet side hole from the oil outlet cavity.
[0006] The beneficial effects of this utility model are as follows: When the fuel inlet plug is inserted to the right into the socket, it can push the valve core to slide to the right and connect the fuel outlet side hole with the fuel outlet inner cavity, thereby automatically opening the fuel nozzle channel. At this time, the fuel input from the fuel inlet plug first enters the valve core, then enters the fuel outlet inner cavity of the fuel outlet sleeve from the fuel outlet side hole of the valve core, and then is output from the fuel outlet pipe of the fuel outlet sleeve. When the fuel inlet plug is pulled out to the left from the socket, the valve core slides to the left under the elastic action of the spring, and the fuel outlet side hole slides into the through hole of the valve core. The fuel outlet side hole is disconnected from the fuel outlet inner cavity, and the fuel nozzle channel is automatically closed, thereby avoiding the problem of fuel flowing out from the fuel inlet of the drone.
[0007] In the above technical solution, the insertion hole and valve core through hole of the oil inlet sleeve are both cylindrical holes, and the central axes of the insertion hole and valve core through hole are the same. The inner diameter of the valve core through hole is smaller than the inner diameter of the insertion hole. When the valve core slides to the left end position, the left end of the valve core extends into the insertion hole. This structure allows the oil inlet channel of the oil inlet plug to be aligned with the valve core through hole of the valve core when the oil inlet plug is inserted into the insertion hole, resulting in smoother oil intake. Furthermore, since the left end of the valve core extends into the insertion hole when the valve core slides to the left end position, the oil inlet plug can push the valve core to the right during the insertion process.
[0008] In the above technical solution, the outer side of the valve core is provided with a first annular groove, which is close to the left side of the annular protrusion. A first sealing ring is installed inside the first annular groove. The right end wall of the valve core through hole of the oil inlet sleeve is provided with a second annular groove. When the valve core slides to the left end position, the outer side of the first sealing ring contacts the second annular groove, and the left side of the annular protrusion contacts the right end face of the oil inlet sleeve. By setting the first sealing ring, the gap between the outer side of the right end of the valve core and the right end wall of the valve core through hole can be sealed, resulting in good sealing performance. The annular protrusion can further press the first sealing ring against the right end face of the oil inlet sleeve and the second annular groove, further improving the sealing performance.
[0009] In the above technical solution, the oil outlet sleeve has a cylindrical inner cavity, and the inner diameter of the oil outlet sleeve is larger than the inner diameter of the oil outlet pipe. The right end of the spring elastically abuts against the inner wall of the right end of the oil outlet cavity. The oil outlet sleeve and the oil inlet sleeve are connected by an interference fit, resulting in a tight connection and good sealing performance.
[0010] In the above technical solution, a connecting retaining ring is provided at the left end of the oil inlet sleeve. The connecting retaining ring is located on the left side of the insertion hole. Several connecting blocks that cooperate with the connecting retaining ring are provided outside the oil inlet plug. When the oil inlet plug is inserted into the insertion hole to the right, the connecting blocks can be engaged with the connecting retaining ring. This structure allows the oil inlet plug to be inserted into the insertion hole to the right, and the connecting retaining ring can fix the oil inlet plug in place.
[0011] In the above technical solution, the connecting retaining ring has an annular groove, and several stops are spaced apart on the left side of the annular groove. There are notches between adjacent stops. When the oil inlet plug is inserted to the right into the socket, the connecting block can enter the annular groove through the notch. Then, by rotating it by a set angle, the stops block the connecting block. This structure allows the oil inlet plug to be fixed in place by the connecting retaining ring when inserted to the right into the socket; and when pulled out to the left from the socket, the connecting retaining ring can be released by rotating it by another set angle, making it very convenient to use.
[0012] In the above technical solution, at least one third annular groove is provided on the outer right end of the oil inlet plug, and a second sealing ring is installed inside the third annular groove. When the oil inlet plug is inserted into the socket to the right, the outer side of the second sealing ring is press-fitted with the inner wall of the socket. By setting the second sealing ring, the outer side of the oil inlet plug can be sealed with the inner wall of the socket, thus preventing oil leakage during the oil inlet process.
[0013] In the above technical solution, an oil inlet channel is provided inside the oil inlet plug, and an oil inlet pipe is connected to the left end of the oil inlet plug. The oil inlet pipe is used to connect to the oil delivery pipeline, and the outer wall of the oil inlet pipe is provided with an anti-detachment protrusion to prevent the oil delivery pipeline from becoming loose.
[0014] In the above technical solution, the left end of the oil inlet sleeve is provided with an external thread, and a screw is provided outside the external thread. The left side of the screw mates with the right side of the connecting retaining ring to clamp an external object. The oil inlet sleeve can be installed on a component where no personnel are present, and then locked in place by the screw.
[0015] In the above technical solution, the UAV refueling nozzle capable of automatically closing the nozzle channel also includes a nozzle plug. The right end of the nozzle plug is inserted into the insertion hole of the inlet sleeve. The right end of the nozzle plug has an inner cavity. When the nozzle plug is inserted into the insertion hole of the inlet sleeve, the left end of the valve core extends into the inner cavity of the nozzle plug. The left end of the nozzle plug has a cap, and the side of the nozzle plug has a vent hole communicating with the inner cavity. When the fuel inlet plug is pulled out to the left from the insertion hole, the right end of the nozzle plug is then inserted into the insertion hole of the inlet sleeve. Because the left end of the valve core can extend into the inner cavity of the nozzle plug, the right end of the nozzle plug can be prevented from pushing the valve core. Because the side of the nozzle plug has a vent hole communicating with the inner cavity, gas inside the insertion hole of the inlet sleeve can be discharged through the vent hole. Attached Figure Description
[0016] Figure 1 This is a diagram of the dispersed structure of this utility model.
[0017] Figure 2 This is a structural diagram of the present invention after the oil inlet plug is inserted.
[0018] Figure 3 This is a structural diagram of the present invention after the oil nozzle plug is inserted.
[0019] Figure 4 This is a cross-sectional view of the present invention after the oil inlet plug is inserted.
[0020] Figure 5 This is a cross-sectional view of the present invention after the oil inlet plug has been pulled out.
[0021] Figure 6 This is a cross-sectional view of the present invention after the oil nozzle plug has been inserted. Detailed Implementation
[0022] The structural and working principles of this utility model will be further described in detail below with reference to the accompanying drawings.
[0023] like Figures 1-6As shown, this utility model is a drone refueling nozzle capable of automatically closing the nozzle channel. It includes an inlet sleeve 1, an outlet sleeve 2, a valve core 3, a spring 4, and an inlet plug 5. The left end of the inlet sleeve 1 has an insertion hole 11, and the right end of the inlet sleeve 1 has a valve core through hole 12 communicating with the insertion hole 11. The valve core 3 is installed within the valve core through hole 12 and can slide left and right along the through hole 12. The valve core 3 has an inlet hole 31 inside, and an outlet side hole 32 communicating with the inlet hole 31 on its side. The right end of the valve core 3 is closed, and an annular protrusion 33 is located to the right of the outlet side hole 32. The left end of the outlet sleeve 2 is fitted over the right end of the inlet sleeve 1, and the outlet sleeve 2 has an outlet valve. The inner cavity 21 has the right end of the valve core 3 extending into it. The spring 4 is installed inside the oil outlet inner cavity 21, and the left end of the spring 4 elastically abuts against the right side of the annular protrusion 33. The right end of the oil outlet sleeve 2 is connected to an oil outlet pipe 22 that communicates with the oil outlet inner cavity 21. The oil inlet plug 5 can be inserted to the right into the socket 11 or pulled out to the left from the socket 11. When the oil inlet plug 5 is inserted to the right into the socket 11, it can push the valve core 3 to slide to the right and connect the oil outlet side hole 32 with the oil outlet inner cavity 21. When the oil inlet plug 5 is pulled out to the left from the socket 11, the valve core 3 slides to the left under the elastic action of the spring 4 and the oil outlet side hole 32 slides into the valve core through hole 12, disconnecting the oil outlet side hole 32 from the oil outlet inner cavity 21.
[0024] like Figure 2 and Figure 4 As shown, when the fuel inlet plug 5 is inserted to the right into the socket 11, it can push the valve core 3 to slide to the right and connect the fuel outlet side hole 32 with the fuel outlet inner cavity 21, thereby automatically opening the fuel nozzle channel. At this time, the fuel input from the fuel inlet plug 5 first enters the valve core 3, then enters the fuel outlet inner cavity 21 of the fuel outlet sleeve 2 from the fuel outlet side hole 32 of the valve core 3, and then is output from the fuel outlet pipe 22 of the fuel outlet sleeve 2; as Figure 5 As shown, when the oil inlet plug 5 is pulled out to the left from the socket 11, the valve core 3 slides to the left under the elastic action of the spring 4, and the oil outlet side hole 32 slides into the valve core through hole 12. The oil outlet side hole 32 is disconnected from the oil outlet inner cavity 21, and the oil nozzle channel is automatically closed, thereby avoiding the problem of fuel flowing out from the drone's oil receiving nozzle.
[0025] like Figures 4-6As shown, the insertion hole 11 and valve core through hole 12 of the oil inlet sleeve 1 are both cylindrical holes, and the central axes of the insertion hole 11 and valve core through hole 12 are the same. The inner diameter of the valve core through hole 12 is smaller than the inner diameter of the insertion hole 11. When the valve core 3 slides to the left end position, the left end of the valve core 3 extends into the insertion hole 11. This structure allows the oil inlet channel of the oil inlet plug 5 to be aligned with the valve core through hole 12 of the valve core 3 when it is inserted into the insertion hole 11, resulting in smoother oil intake. Furthermore, since the left end of the valve core 3 extends into the insertion hole 11 when it slides to the left end position, the oil inlet plug 5 can push the valve core 3 to the right during the insertion process.
[0026] like Figure 1 , Figure 4 and Figure 5 As shown, the valve core 3 has a first annular groove 34 on its outer side, which is close to the left side of the annular protrusion 33. A first sealing ring 35 is installed inside the first annular groove 34. The right end wall of the valve core through hole 12 of the oil inlet sleeve 1 has a second annular groove 13. When the valve core 3 slides to the left end position, the outer side of the first sealing ring 35 contacts the second annular groove 13, and the left side of the annular protrusion 33 contacts the right end face of the oil inlet sleeve 1. By setting the first sealing ring 35, the gap between the outer right end of the valve core 3 and the right end wall of the valve core through hole 12 can be sealed, resulting in good sealing performance. The annular protrusion 33 can further press the first sealing ring 35 against the right end face of the oil inlet sleeve 1 and the second annular groove 13, further improving the sealing performance.
[0027] like Figures 4-6 As shown, the oil outlet sleeve 2 has a cylindrical inner cavity 21, and its inner diameter is larger than that of the oil outlet pipe 22. The right end of the spring 4 elastically abuts against the inner wall of the right end of the oil outlet cavity 21. The oil outlet sleeve 2 and the oil inlet sleeve 1 are connected by an interference fit, resulting in a tight connection and good sealing. The outer wall of the oil outlet pipe 22 is used to connect to the oil pipeline, and the outer wall of the oil outlet pipe 22 is provided with an anti-detachment protrusion to prevent the oil pipeline from loosening.
[0028] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the left end of the oil inlet sleeve 1 is provided with a connecting retaining ring 14, which is located to the left of the insertion hole 11. Several connecting blocks 51, which cooperate with the connecting retaining ring 14, are provided outside the oil inlet plug 5. When the oil inlet plug 5 is inserted to the right into the insertion hole 11, the connecting blocks 51 can be engaged with the connecting retaining ring 14. This structure allows the oil inlet plug 5 to be inserted to the right into the insertion hole 11, and the connecting retaining ring 14 can secure the oil inlet plug 5 in place.
[0029] The connecting ring 14 has an annular groove 141 inside. Several stops 142 are spaced apart on the left side of the annular groove 141, and a notch 143 is between adjacent stops 142. When the oil inlet plug 5 is inserted to the right into the socket 11, the connecting block 51 can enter the annular groove 141 through the notch 143. Then, by rotating it by a set angle, the stops 142 block the connecting block 51. This structure allows the oil inlet plug 5 to be fixed in place by the connecting ring 14 simply by rotating it by a set angle when inserted to the right into the socket 11; and when the oil inlet plug 5 is pulled out to the left from the socket 11, simply rotating it by a set angle releases the connecting ring 14 from the oil inlet plug 5, making it very convenient to use.
[0030] The oil inlet plug 5 has at least one third annular groove 52 on its outer right side. A second sealing ring 53 is installed inside the third annular groove 52. When the oil inlet plug 5 is inserted into the socket 11 to the right, the outer side of the second sealing ring 53 is press-fitted with the inner wall of the socket 11. By setting the second sealing ring 53, the outer side of the oil inlet plug 5 can be sealed with the inner wall of the socket 11, preventing oil leakage during the oil inlet process.
[0031] The oil inlet plug 5 has an oil inlet channel 54 inside, and the left end of the oil inlet plug 5 is connected to an oil inlet pipe 55. The oil inlet pipe 55 is used to connect to the oil pipeline, and the outer wall of the oil inlet pipe 55 is provided with an anti-detachment protrusion to prevent the oil pipeline from becoming loose.
[0032] like Figures 1-6 As shown, the oil inlet sleeve 1 has an external thread on its left end, and a screw 6 is provided outside the external thread. The left side of the screw 6 mates with the right side of the connecting retainer 14 to clamp an external object. The oil inlet sleeve 1 can be installed on a component where no personnel are present, and then locked in place by the screw 6.
[0033] like Figure 1 , Figure 3 and Figure 6As shown, the UAV fuel receiver that can automatically close the fuel nozzle channel also includes a fuel nozzle plug 7. The right end of the fuel nozzle plug 7 is used to insert into the insertion hole 11 of the fuel inlet sleeve 1. The right end of the fuel nozzle plug 7 is provided with a fuel nozzle plug cavity 71. When the fuel nozzle plug 7 is inserted into the insertion hole 11 of the fuel inlet sleeve 1, the left end of the valve core 3 extends into the fuel nozzle plug cavity 71. The left end of the fuel nozzle plug 7 is provided with a plug cap 72. The side of the fuel nozzle plug 7 is provided with a vent hole 73 that communicates with the fuel nozzle plug cavity 71. After the oil inlet plug 5 is pulled out to the left from the socket 11, the right end of the oil nozzle plug 7 is then inserted into the socket 11 of the oil inlet sleeve 1. Since the left end of the valve core 3 can extend into the inner cavity 71 of the oil nozzle plug, the right end of the oil nozzle plug 7 can be prevented from pushing the valve core 3. Since the side of the oil nozzle plug 7 is provided with a vent hole 73 that communicates with the inner cavity 71 of the oil nozzle plug, the gas in the socket 11 of the oil inlet sleeve 1 can be discharged from the vent hole 73.
[0034] The above description is merely a preferred embodiment of this utility model. Any minor modifications, equivalent changes, and alterations made to the above embodiments based on the technical solution of this utility model shall fall within the scope of the technical solution of this utility model.
Claims
1. A refueling nozzle for a drone capable of automatically closing the refueling nozzle channel, characterized in that: The system includes an inlet sleeve, an outlet sleeve, a valve core, a spring, and an inlet plug. The left end of the inlet sleeve has a insertion hole, and the right end has a valve core through hole communicating with the insertion hole. The valve core is installed within the valve core through hole and can slide left and right along it. The valve core has an inlet hole inside and an outlet side hole communicating with the inlet hole on its side. The right end of the valve core is closed, and an annular protrusion is located to the right of the outlet side hole on its right side. The left end of the outlet sleeve is fitted over the right end of the inlet sleeve, and the outlet sleeve has an outlet cavity inside. The right end of the valve core extends... The spring is installed inside the oil outlet cavity, with its left end elastically abutting against the right side of the annular protrusion. The right end of the oil outlet sleeve is connected to an oil outlet pipe that communicates with the oil outlet cavity. The oil inlet plug can be inserted to the right into the socket or pulled out to the left from the socket. When the oil inlet plug is inserted to the right into the socket, it can push the valve core to slide to the right and connect the oil outlet side hole with the oil outlet cavity. When the oil inlet plug is pulled out to the left from the socket, the valve core slides to the left under the elastic action of the spring and causes the oil outlet side hole to slide into the valve core through hole, disconnecting the oil outlet side hole from the oil outlet cavity.
2. The UAV refueling nozzle capable of automatically closing the nozzle channel according to claim 1, characterized in that: The insertion hole and valve core through hole of the oil inlet sleeve are both cylindrical holes, and the central axes of the insertion hole and valve core through hole are the same. The inner diameter of the valve core through hole is smaller than the inner diameter of the insertion hole. When the valve core slides to the left end position, the left end of the valve core extends into the insertion hole.
3. The UAV refueling nozzle capable of automatically closing the nozzle channel according to claim 2, characterized in that: The valve core has a first annular groove on its outer side, which is close to the left side of the annular protrusion. A first sealing ring is installed inside the first annular groove. The right end wall of the valve core through hole of the oil inlet sleeve has a second annular groove. When the valve core slides to the left end position, the outer side of the first sealing ring contacts the second annular groove, and the left side of the annular protrusion contacts the right end face of the oil inlet sleeve.
4. The UAV refueling nozzle capable of automatically closing the nozzle channel according to claim 3, characterized in that: The oil outlet sleeve has a cylindrical inner cavity, and the inner diameter of the oil outlet sleeve is larger than the inner diameter of the oil outlet pipe. The right end of the spring elastically abuts against the inner wall of the right end of the oil outlet cavity.
5. The UAV refueling nozzle capable of automatically closing the nozzle channel according to claim 1, characterized in that: The left end of the oil inlet sleeve is provided with a connecting retaining ring, which is located on the left side of the insertion hole. Outside the oil inlet plug, there are several connecting blocks that cooperate with the connecting retaining ring. When the oil inlet plug is inserted into the insertion hole to the right, the connecting blocks can be engaged into the connecting retaining ring.
6. The UAV refueling nozzle capable of automatically closing the nozzle channel according to claim 5, characterized in that: The connecting ring has an annular groove inside. Several stops are spaced apart on the left side of the annular groove. There is a notch between adjacent stops. When the oil inlet plug is inserted into the socket to the right, the connecting block can enter the annular groove from the notch. Then, rotate it by a set angle so that the stops block block the connecting block.
7. The UAV refueling nozzle capable of automatically closing the nozzle channel according to claim 6, characterized in that: The right side of the oil inlet plug is provided with at least one third annular groove, and a second sealing ring is installed inside the third annular groove. When the oil inlet plug is inserted into the socket to the right, the outer side of the second sealing ring is press-fitted with the inner wall of the socket.
8. The UAV refueling nozzle capable of automatically closing the nozzle channel according to claim 7, characterized in that: The oil inlet plug has an oil inlet channel inside, and the left end of the oil inlet plug is connected to an oil inlet pipe.
9. The UAV refueling nozzle capable of automatically closing the nozzle channel according to claim 5, characterized in that: The oil inlet sleeve has an external thread on the left side, and a screw is provided outside the external thread. The left side of the screw mates with the right side of the connecting ring to clamp an external object.
10. The UAV refueling nozzle capable of automatically closing the nozzle channel according to claim 1, characterized in that: It also includes an oil nozzle plug, the right end of which is used to be inserted into the insertion hole of the oil inlet sleeve. The right end of the oil nozzle plug has an inner cavity. When the oil nozzle plug is inserted into the insertion hole of the oil inlet sleeve, the left end of the valve core extends into the inner cavity of the oil nozzle plug. The left end of the oil nozzle plug is provided with a plug cap. The side of the oil nozzle plug is provided with a vent hole that communicates with the inner cavity of the oil nozzle plug.