Air filter for unmanned aerial vehicle

Abstract

The utility model discloses an air filter for an unmanned aerial vehicle, which relates to the technical field of unmanned aerial vehicles and comprises a shell, a side end of the shell is fixedly connected with an air delivery pipe, the side end of the shell is provided with a dust discharge port, the inner wall of the shell is fixedly connected with a plurality of cleaning columns, the cleaning columns are arranged at positions close to the dust discharge port, and a filter cartridge is arranged on the shell. The inner wall of the filter cartridge is rotatably connected with the inner wall of the gas conveying pipe, the side end of the filter cartridge is fixedly connected with a side plate, the side end of the side plate is fixedly connected with a rotating shaft, the side end of the rotating shaft is fixedly connected with a servo motor, the cross section of each filter plate is triangular, and the filter plates are distributed on the outer wall of the filter cartridge at equal intervals along the axis of the filter cartridge; the filter plate is fixedly connected with the filter cartridge, and the filter plate has elasticity; when the filter plate collides with the cleaning column, accumulated dust can be knocked down, and meanwhile, when the filter plate slides along the cleaning column, the cleaning column removes dust on the surface of the filter plate again.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) technology, specifically to an air filter for UAVs. Background Technology

[0002] A drone is an aircraft that can be remotely controlled or fly autonomously without the need for a human pilot. It is typically equipped with an aircraft power plant, rotors or fixed wings to provide lift, and can perform various missions in the air. Drones can be operated by radio remote control equipment and onboard program control devices, or by an onboard computer that can operate them fully or intermittently autonomously.

[0003] In the existing technology, drones often use air filters to protect the engine. The air filter can filter the air entering the engine. The air filter is mainly composed of a shell, a filter element and a support structure. The filter element is installed inside the shell, and the shell is installed on the drone through the support structure.

[0004] However, when a drone flies in dusty air, a lot of dust accumulates on the surface of the filter element. The dust causes the filter element to become clogged, which reduces the amount of air passing through the filter element, thereby limiting the air intake of the engine and ultimately affecting the engine's performance. Utility Model Content

[0005] The purpose of this utility model is to provide an air filter for unmanned aerial vehicles (UAVs) to solve the technical problem in the prior art where a large amount of dust accumulates on the surface of the filter element when the UAV flies in dusty air, causing the filter element to become clogged. This reduces the amount of air passing through the filter element, thereby limiting the air intake of the engine and ultimately affecting the engine's performance.

[0006] The technical problem to be solved by this utility model can be achieved through the following technical solution:

[0007] An air filter for drones, comprising:

[0008] The outer shell has an air supply pipe fixedly connected to its side end, a dust discharge port opened at the side end of the outer shell, and a number of cleaning columns fixedly connected to the inner wall of the outer shell, with the cleaning columns positioned near the dust discharge port.

[0009] A filter cartridge is disposed inside a housing. The inner wall of the filter cartridge is rotatably connected to the inner wall of the air supply pipe. A side plate is fixedly connected to the side end of the filter cartridge, and a rotating shaft is fixedly connected to the side end of the side plate. A servo motor is fixedly connected to the side end of the rotating shaft.

[0010] The filter plate has a triangular cross-section and is provided in several groups, which are equidistantly distributed on the outer wall of the filter cylinder along the axis of the filter cylinder. The filter plate is fixedly connected to the filter cylinder and has elasticity.

[0011] As a further embodiment of this utility model: a rotating hole is provided on the side of the outer shell, a protective plate is fixedly connected to the end of the outer shell away from the dust outlet, the inner wall of the rotating hole is rotatably connected to the rotating shaft, and the servo motor is fixedly connected to the side of the outer shell.

[0012] As a further embodiment of this utility model, the protective plate is provided with several air inlets.

[0013] As a further embodiment of this utility model: a retaining ring is fixedly connected to the side end of the filter cartridge, the retaining ring is rotatably connected to the inner wall of the outer shell, and the retaining ring is rotatably connected to the inner wall of the gas delivery pipe.

[0014] As a further embodiment of this utility model: a limiting ring is fixedly connected to the side end of the gas transmission pipe, the inner diameter of the limiting ring being smaller than the inner diameter of the supporting ring and the inner diameter of the filter cylinder, and the limiting ring and the supporting ring are abuttingly connected.

[0015] As a further embodiment of this utility model: a blocking plate is fixedly connected to the side end of the limiting ring, the blocking plate has a semi-circular cross-section, and the blocking plate is rotatably connected to the inner wall of the filter cylinder.

[0016] The beneficial effects of this utility model are:

[0017] 1. The outer shell is mounted on the drone via a support structure. When the drone flies in a dusty environment, air enters the outer shell from the side. The air first passes through a filter plate, which filters the dust in the air. Then the air enters the filter plate, which performs secondary filtration of the dust in the air. The air then enters the engine through an air supply pipe, which is connected to the engine. This achieves the effect of secondary filtration of dust in the air. It should be noted that both the filter plate and the filter cartridge have filter holes.

[0018] 2. The servo motor operates, driving the rotating shaft to rotate. The rotating shaft then drives the side plate to rotate, which in turn drives the filter cartridge to rotate within the housing. The filter cartridge, in turn, drives the filter plates to rotate. Dust accumulates between the filter plates, which rotate within the housing carrying the dust. When a filter plate rotates to the cleaning column, its elasticity causes it to collide with the cleaning column, resulting in a bending effect. The filter plate then slides along the cleaning column, knocking off the accumulated dust. Simultaneously, as the filter plate slides along the cleaning column, the cleaning column further removes dust from the filter plate surface. It should be noted that the rotating filter plate discharges the removed dust through the dust outlet, thus achieving automatic dust removal and preventing dust blockage in the filter plates. This ensures a stable supply of air to the engine from the air filter. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a right view of the overall structure of this utility model;

[0022] Figure 3 This is a cross-sectional view (AA) of the overall structure of this utility model;

[0023] Figure 4 This is a cross-sectional view of the overall structure of this utility model (BB).

[0024] Figure 5 This is a schematic diagram of the outer shell structure of this utility model;

[0025] Figure 6 This is a schematic diagram of the filter cartridge structure of this utility model;

[0026] Figure 7 This is a schematic diagram of the barrier plate structure of this utility model.

[0027] In the diagram: 1. Outer shell; 2. Air supply pipe; 3. Dust outlet; 4. Cleaning column; 5. Filter plate; 6. Servo motor; 7. Protective plate; 8. Filter cartridge; 9. Baffle plate; 10. Rotating shaft; 11. Side plate; 12. Limiting ring; 13. Supporting ring; 14. Rotating hole; 15. Air inlet. 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0029] like Figures 1-7 As shown, an air filter for drones includes: a housing 1, a filter cartridge 8, and a filter plate 5;

[0030] An air supply pipe 2 is fixedly connected to the side of the outer casing 1, and a dust discharge port 3 is opened on the side of the outer casing 1. Several cleaning columns 4 are fixedly connected to the inner wall of the outer casing 1, and the cleaning columns 4 are positioned near the dust discharge port 3. The filter cylinder 8 is disposed inside the outer casing 1, and the inner wall of the filter cylinder 8 is rotatably connected to the inner wall of the air supply pipe 2. A side plate 11 is fixedly connected to the side of the filter cylinder 8, and a rotating shaft 10 is fixedly connected to the side of the side plate 11. A servo motor 6 is fixedly connected to the side of the rotating shaft 10. The filter plate 5 has a triangular cross-section, and several groups of filter plates 5 are provided and are equidistantly distributed along the axis of the filter cylinder 8 on the outer wall of the filter cylinder 8. The filter plates 5 and the filter cylinder 8 are fixedly connected. The filter plate 5 is flexible and the outer shell 1 is installed on the drone through the support structure. When the drone flies in a dusty environment, air enters the outer shell 1 from the side. The air first passes through the filter plate 5, which filters the dust in the air. Then the air enters the filter plate 5, which performs secondary filtration of the dust in the air. The air enters the engine through the air supply pipe 2, which is connected to the engine. This achieves the effect of secondary filtration of dust in the air. It should be noted that both the filter plate 5 and the filter cylinder 8 have filter holes.

[0031] In this system, the servo motor 6 operates, driving the rotating shaft 10 to rotate. The rotating shaft 10 then drives the side plate 11 to rotate, which in turn drives the filter cartridge 8 to rotate within the outer casing 1. The filter cartridge 8 then drives the filter plates 5 to rotate. Dust accumulates between the filter plates 5, which rotate within the outer casing 1 carrying the dust. When the filter plate 5 rotates to the cleaning column 4, its elasticity causes it to collide with the cleaning column 4, resulting in a bending effect. The filter plate 5 then slides along the cleaning column 4. This collision knocks off the accumulated dust. Simultaneously, as the filter plate 5 slides along the cleaning column 4, the cleaning column 4 removes dust from the surface of the filter plate 5. It should be noted that the rotating filter plate 5 discharges the removed dust from the dust outlet 3, thus achieving automatic dust removal and preventing dust blockage in the filter plate 5. This ensures that the air filter stably supplies air to the engine.

[0032] In some specific implementations, a rotating hole 14 is provided on the side of the outer casing 1. A protective plate 7 is fixedly connected to the end of the outer casing 1 away from the dust discharge port 3. The inner wall of the rotating hole 14 is rotatably connected to the rotating shaft 10. The servo motor 6 is fixedly connected to the side of the outer casing 1. The servo motor 6 is fixed on the outer casing 1, which can ensure the stability of the servo motor 6. When the rotating shaft 10 rotates, the rotating shaft 10 rotates along the inner wall of the rotating hole 14. The rotating hole 14 provides positioning support for the rotating shaft 10, thereby ensuring the stability of the rotation of the filter cartridge 8.

[0033] In some specific implementations, the protective plate 7 has several air inlets 15 through it. The protective plate 7 can protect the filter plate 5 and the filter cylinder 8, preventing birds and other debris from entering the outer shell 1. Air can enter the outer shell 1 through the air inlets 15.

[0034] In some specific embodiments, a retaining ring 13 is fixedly connected to the side end of the filter cartridge 8. The retaining ring 13 is rotatably connected to the inner wall of the outer shell 1 and to the inner wall of the air supply pipe 2. When the filter cartridge 8 rotates, the filter cartridge 8 drives the retaining ring 13 to rotate. The inner walls of the filter cartridge 8 and the retaining ring 13 rotate along the air supply pipe 2. The air supply pipe 2 provides positioning support for the filter cartridge 8 and the retaining ring 13. The outer shell 1 provides limiting support for the filter cartridge 8 through the retaining ring 13.

[0035] In some specific implementations, a limiting ring 12 is fixedly connected to the side end of the gas supply pipe 2. The inner diameter of the limiting ring 12 is smaller than the inner diameter of the supporting ring 13 and the inner diameter of the filter cartridge 8. The limiting ring 12 and the supporting ring 13 are abutting and connected. The limiting ring 12 fixed to the side end of the gas supply pipe 2 can limit the supporting ring 13, preventing the filter cartridge 8 from shifting when rotating inside the outer shell 1, thereby ensuring the stability of the rotation of the filter cartridge 8.

[0036] In some specific implementations, a baffle plate 9 is fixedly connected to the side end of the limiting ring 12. The baffle plate 9 has a semi-circular cross-section and is rotatably connected to the inner wall of the filter cylinder 8. In order to prevent air from entering the filter cylinder 8 from the dust discharge port 3 and affecting the dust discharge from the dust discharge port 3, the inner wall of the filter cylinder 8 is provided with a baffle plate 9. The baffle plate 9 can block the air at the dust discharge port 3 and prevent air from entering the filter cylinder 8 from the dust discharge port 3 to form an airflow, thereby ensuring that dust can be continuously discharged from the dust discharge port 3.

[0037] The foregoing has described several embodiments of this utility model in detail, but these embodiments are not limited thereto and should not be considered as limiting the scope of this utility model. All equivalent changes and improvements made within the scope of the claims of this utility model should still fall within the patent coverage of this utility model.

Claims

1. An air filter for unmanned aerial vehicles (UAVs), characterized in that, include: The outer shell (1) has an air supply pipe (2) fixedly connected to its side end, a dust discharge port (3) opened on the side end of the outer shell (1), and a number of cleaning columns (4) fixedly connected to the inner wall of the outer shell (1). The number of cleaning columns (4) are located near the dust discharge port (3). A filter cylinder (8) is set inside the outer shell (1). The inner wall of the filter cylinder (8) is rotatably connected to the inner wall of the air supply pipe (2). A side plate (11) is fixedly connected to the side end of the filter cylinder (8). A rotating shaft (10) is fixedly connected to the side end of the side plate (11). A servo motor (6) is fixedly connected to the side end of the rotating shaft (10). The filter plate (5) has a triangular cross-section. The filter plate (5) is provided in several groups and is equidistantly distributed on the outer wall of the filter cylinder (8) along the axis of the filter cylinder (8). The filter plate (5) is fixedly connected to the filter cylinder (8) and has elasticity.

2. An air filter for unmanned aerial vehicles according to claim 1, characterized in that, The outer shell (1) has a rotating hole (14) on its side. A protective plate (7) is fixedly connected to the end of the outer shell (1) away from the dust outlet (3). The inner wall of the rotating hole (14) is rotatably connected to the rotating shaft (10). The servo motor (6) is fixedly connected to the side of the outer shell (1).

3. An air filter for unmanned aerial vehicles according to claim 2, characterized in that, The protective plate (7) has several air inlets (15) through it.

4. An air filter for unmanned aerial vehicles according to claim 1, characterized in that, The filter cartridge (8) is fixedly connected to a retaining ring (13) on its side. The retaining ring (13) is rotatably connected to the inner wall of the outer shell (1) and rotatably connected to the inner wall of the gas delivery pipe (2).

5. An air filter for unmanned aerial vehicles according to claim 4, characterized in that, A limiting ring (12) is fixedly connected to the side end of the gas pipeline (2). The inner diameter of the limiting ring (12) is smaller than the inner diameter of the supporting ring (13) and the inner diameter of the filter cylinder (8). The limiting ring (12) and the supporting ring (13) are connected in abutting connection.

6. An air filter for unmanned aerial vehicles according to claim 5, characterized in that, The limiting ring (12) is fixedly connected to a baffle plate (9) on its side. The baffle plate (9) has a semi-circular cross-section and is rotatably connected to the inner wall of the filter cylinder (8).

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