A filter device for drone refueling

Abstract

This utility model discloses a filtration device for refueling drones, relating to the field of filtration device technology. It aims to solve the problem that single-stage filtration is often used, which cannot effectively remove impurities of different particle sizes, making it difficult to meet the high-precision cleaning requirements of drone fuel. The device includes a vehicle body and an electrical control cabinet. The vehicle body houses an oil suction filter and a motor pump assembly, with a solenoid valve between the motor pump assembly and the oil suction filter. It employs a three-stage filtration architecture of "oil suction filter (primary filter) + two sets of filters (pre-filter + fine filter)" to progressively remove impurities of different particle sizes, ensuring fuel cleanliness meets the requirements of the drone's precision engine. It integrates a pressure sensor (with a pressure gauge), a temperature sensor, and a turbine flow meter to monitor fuel pressure, temperature, and flow parameters in real time, with data synchronously fed back to the electrical control cabinet, supporting operational condition warnings and dynamic control.

Description

Technical Field

[0001] This utility model relates to the field of filtration device technology, and in particular to a filtration device for refueling unmanned aerial vehicles. Background Technology

[0002] With the widespread application of drone technology, its fuel supply system has placed stringent requirements on fuel cleanliness, monitoring accuracy, and ease of maintenance. Drone engines are highly precise, and even tiny impurities in the fuel can easily lead to component wear, malfunctions, or even crashes. At the same time, the pressure, temperature, and flow parameters during fuel delivery directly affect refueling efficiency and equipment safety.

[0003] Most filters use single-stage filtration, which cannot effectively remove impurities of different particle sizes and cannot meet the high-precision cleaning requirements of drone fuel; the filter top cover is mostly bolted or snap-fitted, which takes a long time to disassemble and the filter cartridge replacement operation is complicated.

[0004] Therefore, this application provides a filtration device for drone refueling to meet the requirements. Utility Model Content

[0005] The purpose of this application is to provide a filter device for drone refueling, which aims to solve the problem that single-stage filtration is often used, which cannot effectively remove impurities of different particle sizes and cannot meet the high-precision cleaning requirements of drone fuel.

[0006] To achieve the above objectives, this application provides the following technical solution: a filter device for refueling unmanned aerial vehicles, including a vehicle body and an electrical control cabinet, wherein an oil suction filter and a motor pump set are provided on the vehicle body, and a set of solenoid valves are provided between the motor pump set and the oil suction filter.

[0007] Two sets of filters are installed opposite the motor pump set and the oil suction filter. A turbine flow meter is installed between the two sets of filters. A temperature sensor is connected to the inlet of the first set of filters. A pressure sensor is connected to the outlet of the motor pump set. The pressure sensor and the temperature sensor are connected together. A solenoid valve is installed at the outlet of the other set of filters.

[0008] The aforementioned oil suction filter, solenoid valve, motor pump set, pressure sensor, temperature sensor, and filter are connected in series via delivery pipelines.

[0009] Preferably, a pressure gauge is provided on the pressure sensor.

[0010] Preferably, the filter is provided with a removable top cover, and the filter and the top cover are connected by a limiting mechanism.

[0011] Preferably, the limiting mechanism includes a flipping rod and a connecting shaft, a locking gear, a lever, a rack, and a spring. The outer wall of the filter is provided with a hinge ear, and the flipping rod is hinged to the hinge ear. The outer wall of the top cover is provided with a U-shaped limiting ear, and the flipping rod is adapted to the limiting ear. The top of the flipping rod is provided with a hole, and a set of connecting shafts is rotatably connected in the hole. The connecting shaft is provided with a coaxial locking gear, and the lever is also provided on the connecting shaft. The lever and the locking gear are limited by a locking nut.

[0012] A groove is provided on the top surface of the limiting lug, and a rack is hinged in the groove. A spring is pressed between the bottom surface of the rack and the groove. The rack meshes with the locking gear, and the rack and the locking gear are respectively provided with teeth, which are the same as the ratchet and pawl structure.

[0013] Preferably, the lever includes a first lever and a second lever, both of which are L-shaped. The vertical sections of both levers have hexagonal holes that are adapted to the connecting shaft. The horizontal section of the first lever has a connecting hole, into which the connecting rod of the second lever is inserted.

[0014] Preferably, the connecting shaft includes a rotating body, a limiting body, and a locking body. The rotating body is rotatably connected to the flipping rod. The limiting body is hexagonal and located at both ends of the rotating body. The limiting body is adapted to the through hole and hexagonal hole on the locking gear. A threaded locking body is provided at the outer end of the rotating body. The locking body is threadedly connected to the locking nut.

[0015] In summary, the technical effects and advantages of this utility model are as follows:

[0016] This invention employs a three-stage filtration architecture consisting of an oil suction filter (primary filter) and two sets of filters (pre-filter + fine filter) to gradually remove impurities of different particle sizes, ensuring that the fuel cleanliness meets the requirements of a precision UAV engine. It integrates a pressure sensor (with a pressure gauge), a temperature sensor, and a turbine flow meter to monitor the fuel pressure, temperature, and flow parameters in real time, with the data synchronously fed back to the electrical control cabinet, supporting operational condition warnings and dynamic control. The electrical control cabinet has a built-in PLC control system that uniformly schedules the motor pump group (flow rate adjustment), solenoid valves (pipeline on / off), and monitoring components to achieve automated control of the refueling process, improving operational efficiency and stability.

[0017] In this utility model, the filter top cover adopts a detachable limiting mechanism. Through the ratchet and pawl cooperation of the rack, locking gear and the lever, the top cover can be "unlocked with one click and quickly disassembled", which improves the efficiency of filter cartridge replacement. The lever and connecting shaft are designed as a modular disassembled structure, which makes it easy to inspect and replace worn parts (such as locking gear and lever) separately, reducing maintenance difficulty and cost. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the present utility model. Figure 1 ;

[0020] Figure 2 This is a schematic diagram of the filter structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the top cover structure of this utility model;

[0022] Figure 4 This is an exploded view of the limiting mechanism of this utility model;

[0023] Figure 5 This is a schematic diagram of the connecting shaft structure of this utility model;

[0024] Figure 6 This is a schematic diagram of the structure of the present utility model. Figure 2 ;

[0025] Figure 7 This is a schematic diagram of the structure of the present utility model. Figure 3 ;

[0026] Figure 8 This is a schematic diagram of the structure of the present utility model. Figure 4 .

[0027] In the diagram: 1. Vehicle body; 2. Electrical control cabinet; 3. Oil suction filter; 4. Solenoid valve; 5. Motor pump unit; 6. Pressure sensor; 7. Pressure gauge; 8. Temperature sensor; 9. Filter; 900. Hinge ear; 10. Turbine flow meter; 11. Top cover; 1100. Limiting ear; 1101. Groove; 12. Rack; 13. Spring; 14. Tilting rod; 15. Connecting shaft; 150. Rotating body; 151. Limiting body; 152. Locking body; 16. Locking gear; 160. Through hole; 17. No. 1 lever; 170. Connecting hole; 18. No. 2 lever; 180. Connecting rod; 19. Locking nut. Detailed Implementation

[0028] 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.

[0029] Example: Reference Figure 1-8 The filter device for drone refueling shown includes a vehicle body 1 as the main body, an electrical control cabinet 2 (with a built-in PLC electrical control unit) installed on one side, and the following components connected in series along the delivery pipeline on the vehicle body:

[0030] Oil suction filter 3 (primary filter, connected to the oil tank inlet);

[0031] Solenoid valve 4 (upstream of motor pump unit 5, controls the feed on / off);

[0032] Electric pump unit 5 (provides conveying power and regulates flow rate);

[0033] Pressure sensor 6 (including pressure gauge 7, for monitoring pipeline pressure);

[0034] Temperature sensor 8 (monitors fuel temperature);

[0035] Two sets of filters 9 (pre-filter and fine filter), with a turbine flow meter 10 connected in series in between (to monitor flow).

[0036] Solenoid valve 4 (outlet after fine filtration, controls the on / off of discharge).

[0037] As one embodiment of this invention, the limiting mechanism includes: a hinge ear 900 on the outer wall of the filter 9, and a flipping rod 14 hinged to the hinge ear 900; a U-shaped limiting secondary ear 1100 on the outer wall of the top cover 11, which is adapted to engage with the flipping rod 14. The flipping rod 14 rotates around the hinge ear 900 to remove the top cover 11 and replace the internal filter cartridge; the top cover can be locked by reversing the operation.

[0038] Connecting shaft 15: It consists of a rotating body 150 (rotatably connecting to the flipping rod 14), a limiting body 151 (a hexagonal shaft with two ends), and a locking body 152 (external thread, connected to the locking nut 19);

[0039] The locking gear 16 has a hexagonal through hole 160 at its center, which is adapted to the aforementioned limiting body 151.

[0040] The components include a first lever 17 (L-shaped, with a hexagonal hole in the vertical section and a connecting hole 170 in the horizontal section) and a second lever 18 (L-shaped, with a hexagonal hole in the vertical section, a connecting rod 180, and inserted into the connecting hole 170). The hexagonal holes on both the first lever 17 and the second lever 18 are adapted to the limiting body 151. After installation, they are fixed by locking nuts 19. Moving the components (first / second levers) rotates the connecting shaft 15, causing the locking gear 16 to flip synchronously, releasing the engagement of the flipping rod 14 with the limiting lug 1100.

[0041] A rack 12 is hinged in the groove 1101 on the top surface of the limiting lug 1100, and a spring 13 is press-fitted on the bottom surface. The rack and the locking gear 16 are engaged in a ratchet-pawl type (one-way locking, which can be released by pressing). Pressing the rack 12 in the groove 1101 compresses the spring 13, causing the rack to flip and disengage from the locking gear 16 (due to the ratchet-pawl structure, the locking gear can rotate in the opposite direction).

[0042] The working principle of this device is as follows: The feed inlet of the conveying pipeline is connected to the oil tank. Then, the electrical control cabinet 2 is started. The PLC control unit in the electrical control cabinet 2 controls the operation of the motor pump group 5, which controls the flow rate of the fluid in the conveying pipeline. After the fluid enters the conveying pipeline, it undergoes the first step of filtration through the suction filter 3. After passing through the motor pump group 5, it passes through the pressure sensor 6 and the temperature sensor 8 in sequence. The pressure sensor 6, in conjunction with the pressure gauge 7, can obtain the pressure in the current conveying pipeline, and the temperature sensor 8 can obtain the temperature inside the current conveying pipeline. Then, when the fluid passes through two sets of filters 9, the first set of filters 9 performs pre-filtration, and the other set of filters 9 performs fine filtration. The turbine flow meter 10 between the two sets of filters 9 allows the operation to be controlled through the PLC control panel, which can display the current flow rate, temperature, pressure, and other relevant data of this device. All the above circuit components are uniformly controlled through the electrical control cabinet 2.

[0043] Two sets of solenoid valves 4 allow the fluid inside the delivery pipeline to be stopped in a timely manner.

[0044] When it is necessary to replace the filter cartridge inside the filter 9, press the rack 12 in the groove 1101 to make the rack 12 flip downwards, compress the spring 13, thereby releasing the meshing limit relationship between the rack 12 and the locking gear 16 (the locking gear 16 is a cam, and the meshing structure between the locking gear 16 and the rack 12 is the same as that of a ratchet and pawl). Then flip the lever, so that the first lever 17 and the second lever 18 drive the rotating body 150 to rotate on the flipping lever 14, thereby driving the locking gear 16 to flip, thereby releasing the limit of the flipping lever 14 on the limiting ear 1100, and driving the flipping lever 14 to flip around the hinge ear 900, so that the top cover 11 can be removed, thereby replacing the internal filter cartridge.

[0045] When maintenance of components such as the lever is required, the locking nut 19 on the locking body 152 can be removed. Then, the first lever 17 and the second lever 18 can be pulled outwards, and the first lever 17 and the second lever 18 can be separated from the limiting body 151. The connecting rod 180 can slide out of the connecting hole 170, completing the separation. Then, the two sets of locking gears 16 can be removed from the limiting body 151 (observe the wear of the through hole 160). The connecting shaft 15 can then be removed. Observe the wear of the rotating body 150 and other structures of the connecting shaft 15. Replace the corresponding parts according to the wear condition. After the parts are replaced, they can be installed one by one.

[0046] When in use, vehicle body 1 can be pushed to the destination for use.

[0047] The electromechanical connections involved in this utility model are common practices used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments; they are common knowledge.

[0048] Components not described in detail in this article are existing technologies.

[0049] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A filtering device for unmanned aerial vehicle refueling, comprising a vehicle body (1) and an electric control cabinet (2), characterized in that: An oil suction filter (3) and a motor pump assembly (5) are provided on the vehicle body (1), and a set of solenoid valves (4) are provided between the motor pump assembly (5) and the oil suction filter (3). Two sets of filters (9) are provided opposite to the motor pump set (5) and the oil suction filter (3). A set of turbine flow meters (10) is provided between the two sets of filters (9). A set of temperature sensors (8) is connected to the inlet of the above-mentioned set of filters (9). A set of pressure sensors (6) is connected to the outlet of the motor pump set (5). The pressure sensors (6) are connected to the temperature sensors (8). A set of solenoid valves (4) is provided at the outlet of the other set of filters (9). The oil suction filter (3), solenoid valve (4), motor pump set (5), pressure sensor (6), temperature sensor (8), and filter (9) are connected in series through a delivery pipeline.

2. The filter device for refueling unmanned aerial vehicles according to claim 1, characterized in that: A pressure gauge (7) is provided on the pressure sensor (6).

3. The filter device for refueling unmanned aerial vehicles according to claim 1, characterized in that: The filter (9) is provided with a detachable top cover (11), and the filter (9) and the top cover (11) are connected by a limiting mechanism.

4. A filter device for refueling unmanned aerial vehicles according to claim 3, characterized in that: The limiting mechanism includes a flipping rod (14), a connecting shaft (15), a locking gear (16), a paddle, a rack (12), and a spring (13). The outer wall of the filter (9) is provided with a hinge ear (900), and the flipping rod (14) is hinged to the hinge ear (900). The outer wall of the top cover (11) is provided with a U-shaped limiting ear (1100), and the flipping rod (14) is adapted to the limiting ear (1100). The top of the flipping rod (14) is provided with a hole, and a set of connecting shafts (15) is rotatably connected in the hole. The connecting shaft (15) is provided with a coaxial locking gear (16), and a paddle is also provided on the connecting shaft (15). The paddle and the locking gear (16) are limited by a locking nut (19). A groove (1101) is provided on the top surface of the limiting lug (1100), and the rack (12) is hinged in the groove (1101). A spring (13) is press-fitted between the bottom surface of the rack (12) and the groove (1101). The rack (12) meshes with the locking gear (16), and the rack (12) and the locking gear (16) are provided with teeth and have the same structure as ratchet and pawl.

5. A filter device for refueling unmanned aerial vehicles according to claim 4, characterized in that: The dial includes a first dial (17) and a second dial (18). Both the first dial (17) and the second dial (18) are L-shaped. The vertical sections of the first dial (17) and the second dial (18) are provided with hexagonal holes that are adapted to the connecting shaft (15). The horizontal section of the first dial (17) is provided with a connecting hole (170), and the connecting rod (180) of the second dial (18) is inserted into the connecting hole (170).

6. A filter device for refueling unmanned aerial vehicles according to claim 5, characterized in that: The connecting shaft (15) includes a rotating body (150), a limiting body (151), and a locking body (152). The rotating body (150) is rotatably connected to the flipping rod (14). The limiting body (151) is hexagonal and located at both ends of the rotating body (150). The limiting body (151) is adapted to the through hole (160) and hexagonal hole on the locking gear (16). A locking body (152) with threads is provided at the outer end of the rotating body (150). The locking body (152) is threadedly connected to the locking nut (19).

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