Water source sampling device for unmanned aerial vehicle

Abstract

The utility model relates to the technical field of water source sampling equipment, in particular to a water source sampling device for an unmanned aerial vehicle, which comprises a lifting rope, a water source sampling device and a water source sampling device, the collecting box is arranged at one end, far away from the winder, of the lifting rope; the stroke groove is formed in the outer wall of the collection box; the water inlet is formed in the inner wall of the travel groove; the pressure trigger valve is arranged in the stroke groove; the balancing weight is arranged in the collecting box; the pressure trigger valve comprises a pressed plate arranged in the stroke groove and slidably sealed with the inner wall of the stroke groove; the spring is arranged between the inner bottom surface of the travel groove and the pressed plate; the initial distance between the pressed plate and the inner bottom face of the stroke groove is larger than the distance between the spring and the inner bottom face of the stroke groove. Through the structural design, the sampling device can be carried by an unmanned aerial vehicle to sample a deep water area, and the problem that an existing unmanned aerial vehicle sampling device can only sample a water source in a water surface area is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to water source sampling equipment technical field, specifically provide a water source sampling device for unmanned plane. BACKGROUND

[0002] At present, in many fields such as environmental monitoring, scientific research, sampling and analyzing water source are important means to understand water quality, and unmanned aerial vehicle water source sampling equipment emerges as the times require and is widely applied. However, the existing unmanned aerial vehicle water source sampling equipment has significant limitations.

[0003] The existing equipment can usually only hoist one sampling device, which greatly limits the efficiency and diversity of single sampling. In actual operation, if different indexes or different positions of the same water source need to be sampled, the single sampling device needs to take water back and forth for many times, consumes a lot of time and energy, and reduces the overall work efficiency.

[0004] More importantly, the existing sampling equipment can only take water on the surface of the water source. However, in many actual situations, harmful substances in the water body will sink to the bottom due to their own density, chemical properties and other factors.

[0005] For example, some heavy metal pollutants, pollutants carried by silt, etc. They are often deposited in the deeper position of the water body. The existing sampling equipment cannot sample the water body with large depth, so that the collected water sample cannot fully reflect the real pollution condition of the whole water body, and the subsequent water quality analysis and evaluation results based on these water samples are biased, which cannot provide accurate and effective data support for environmental governance, scientific research, etc. Therefore, there is an urgent practical need to develop a new unmanned aerial vehicle water source sampling equipment that can overcome the above defects. INVENTION CONTENTS

[0006] In order to solve the problem that the existing unmanned aerial vehicle water source sampling equipment cannot sample the deep water area, the utility model provides a water source sampling device for unmanned plane, which realizes improving sampling efficiency and sampling effect in water area with different depths.

[0007] According to one aspect of the utility model, a water source sampling device for unmanned plane is provided, which comprises: a lifting rope, one end of which is connected to a line reel on the unmanned plane; a collection box, which is arranged at the end of the lifting rope away from the line reel; a stroke groove, which is arranged on the outer wall of the collection box; a water inlet hole, which is arranged on the inner wall of the stroke groove; a pressure trigger valve, which is arranged in the stroke groove; a counterweight, which is arranged in the collection box; the pressure trigger valve comprises: a pressure plate, which is arranged in the stroke groove and is in sliding sealing with the inner wall of the stroke groove; a spring, which is arranged between the bottom surface of the stroke groove and the pressure plate; wherein the initial distance between the pressure plate and the bottom surface of the stroke groove is greater than the distance between the spring and the bottom surface of the stroke groove.

[0008] In some embodiments, the collection box comprises: a box body, which is cylindrical; a lifting pipe arranged on the axis of the box body and penetrating through the inner wall of the box body at both ends; a lifting rope arranged through the lifting pipe; a counterweight in the form of a ring, which is sleeved on the outer wall of the lifting pipe in the circumferential direction; and a stroke groove in the form of a ring, which is arranged on the surface of the box body and concentrically arranged with the lifting pipe.

[0009] In some embodiments, the collection box further comprises: a positioning plate in the form of a ring, which is arranged on the side of the box body away from the stroke groove and concentrically arranged with the lifting pipe; a double-ring plate arranged on the side of the box body close to the stroke groove and sleeved on the outside of the stroke groove; and the end of the lifting pipe close to the stroke groove extends outwardly from the box body.

[0010] In some embodiments, the lifting rope comprises: a rope cable body, one end of which is connected to the winding device; and a lifting plate arranged on the end of the rope cable body away from the winding device; the inner wall of the lifting pipe is provided with a hole plate, the rope cable body is slidingly arranged in the hole of the hole plate, and the diameter of the lifting plate is greater than the diameter of the hole of the hole plate.

[0011] In some embodiments, the pressure trigger valve further comprises: a guide ring arranged on the side of the pressure plate close to the inner bottom surface of the stroke groove; wherein the guide ring is concentrically arranged with the lifting pipe; the pressure plate is in the form of a ring, and is concentrically arranged with the lifting pipe; a guide groove is arranged through the inner bottom surface of the stroke groove, and the guide ring and the stroke groove are in sliding sealing; wherein the water inlet hole is arranged in multiple, the multiple water inlet holes are arranged in the form of a ring array on the side of the stroke groove close to the lifting pipe, the water inlet hole penetrates through the stroke groove, the water inlet hole is arranged on the side of the guide ring close to the lifting pipe, and the spring is sleeved on the outer wall of the guide ring in the circumferential direction.

[0012] In some embodiments, the counterweight comprises: a first magnet arranged on the inner bottom surface of the box body; and a second magnet arranged on the end of the guide ring away from the pressure plate; wherein the first magnet and the second magnet are in the form of a ring, and are concentrically arranged with the lifting pipe.

[0013] In some embodiments, the box body is composed of two complementary halves, and the joint surface of the two halves is detachably connected; the end of the lifting pipe close to the water inlet hole penetrates through the box body; wherein a first sealing ring is arranged between the lifting pipe and the box body; and a second sealing ring is arranged on the joint surface of the two halves.

[0014] In some embodiments, the surface of the pressure plate is provided with a filter screen in the form of a ring, the bottom end of the filter screen is mounted on the surface of the pressure plate, and the inner ring of the filter screen is arranged close to the inner wall of the stroke groove.

[0015] The embodiments of the utility model have the following advantages.

[0016] When water quality sampling is performed on a water source, a collecting box is fixed on a lifting rope by using a reel installed on a UAV, the UAV takes off and carries the collecting box to a designated water area, the reel releases the lifting rope, the collecting box is placed on the water surface at the end of the lifting rope, the reel continues to release the lifting rope, and the weight block drags the collecting box to dive, in the process of diving of the collecting box, as the diving depth gradually increases, the water body extrusion pressure triggers the pressure trigger valve to move in the stroke groove, when the pressure trigger valve is affected by the pressure, the pressure plate continuously extrudes the spring, so that the spring is retracted in the stroke groove, until the pressure increases to the pressure plate moving to the lower part of the water inlet hole, the sampling water flows into the water inlet hole, the initial height of the pressure plate is greater than the height of the water inlet hole, so that when the collecting box continuously dives, the water pressure gradually increases, the water inlet hole will not be opened in advance, and water will be filled when diving to the sampling depth, in addition, the position of the water inlet hole can be adjusted by replacing the spring, when the diving depth needs to be increased, the spring with greater elasticity can be replaced, the upper limit of the pressure plate bearing the pressure is increased, so that when diving to a deeper water area, the pressure plate is pressed to the water inlet hole by the greater water pressure, after the collection is completed, the reel retracts the lifting rope, so that the lifting rope drags the collecting box to float out of the water, in the process of floating of the collecting box, the pressure gradually decreases, the spring pushes the pressure plate to reset quickly, and the collecting box is prevented from being filled with water again.

[0017] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent to those skilled in the art upon examination of the following or can be learned by practice of the application. The objects and other advantages of the application can be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

[0018] The technical solutions of the present application will be further described in detail below with reference to the drawings and examples. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings are included to provide a further understanding of the present application and are incorporated in and constitute a part of the specification, illustrate embodiments of the present application and serve to explain the present application and do not limit the present application. In the drawings:

[0020] Figure 1 The single collecting box installation schematic diagram of an embodiment of the present application.

[0021] Figure 2 The multiple collecting box installation schematic diagram of an embodiment of the present application.

[0022] Figure 3 The weight block installation schematic diagram of an embodiment of the present application.

[0023] Figure 4 The Figure 3 The enlarged schematic diagram of the area A.

[0024] Figure 5 The hole plate installation schematic view of one embodiment of the utility model.

[0025] Figure 6 The filter screen installation schematic view of one embodiment of the utility model.

[0026] Figure 7 For Figure 6 The enlarged schematic view of area B.

[0027] Figure 8 For Figure 6 The enlarged schematic view of area C.

[0028] Reference signs: 1 - hanging rope;

[0029] 11 - rope cable body;12 - lifting plate;

[0030] 2 - collection box;

[0031] 21 - box body;22 - hoisting pipe;23 - positioning plate;24 - double ring plate;25 - hole plate;27 - first sealing ring;28 - second sealing ring;29 - filter screen;

[0032] 3 - stroke groove;

[0033] 4 - water inlet hole;

[0034] 5 - pressure trigger valve;

[0035] 51 - pressure receiving plate;52 - spring;53 - guide ring;54 - guide groove;

[0036] 6 - counterweight;

[0037] 61 - first magnet;62 - second magnet. DETAILED DESCRIPTION

[0038] In order to make the purpose, scheme and advantages of the technical scheme of the utility model more clear, the technical scheme of the utility model embodiment will be clearly and completely described below by combining the drawings of the specific embodiment of the utility model. Unless otherwise specified, the terms used in this paper have the usual meaning in the art. The same reference signs in the drawings represent the same parts.

[0039] In the description of the utility model, it is necessary to explain that, unless there are explicit provisions and limitations, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, can also be detachable connection, or integrally connected;It can be mechanical connection, or electrical connection;It can be directly connected, or indirectly connected through an intermediate medium, it can be the communication between two elements inside.For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0040] As described previously, in the traditional unmanned aerial vehicle water source sampling work, since the existing sampling equipment is hoisted on the unmanned aerial vehicle, only the surface water area can be sampled, the deep water area cannot be collected, harmful substances cannot be detected after deposition, and the water quality in the area cannot be detected.

[0041] In order to at least partially solve one or more of the above problems and other potential problems, the example embodiments of the utility model provide a water source sampling device for unmanned aerial vehicle, the sampling device comprises: a rope 1, one end is connected to the winding device on the unmanned aerial vehicle;Collecting box 2, is arranged at the end of the rope 1 away from the winding device;Stroke slot 3, is arranged in the outer wall of collecting box 2;Water inlet hole 4, is arranged in the inner wall of stroke slot 3;Pressure trigger valve 5, is arranged in stroke slot 3;Counterweight 6, is arranged in collecting box 2;Pressure trigger valve 5 includes: pressure plate 51, is arranged in stroke slot 3, and is in sliding sealing with the inner wall of stroke slot 3;Spring 52, is arranged between the bottom surface of stroke slot 3 and pressure plate 51;Wherein the initial distance between pressure plate 51 and the bottom surface of stroke slot 3 is greater than the distance between spring 52 and the bottom surface of stroke slot 3.

[0042] In the above embodiment, when sampling the water quality of the water source, the collecting box 2 is fixed on the lifting rope 1 by the reel installed on the unmanned aerial vehicle. The unmanned aerial vehicle takes off and carries the collecting box 2 to the designated water area. The reel releases the lifting rope 1, and the end of the lifting rope 1 places the collecting box 2 on the water surface. The reel continues to release the lifting rope 1, and the weight block 6 drags the collecting box 2 to dive. In the process of diving of the collecting box 2, as the diving depth gradually increases, the water body extrusion pressure triggers the valve 5 to move in the stroke groove 3. When the pressure trigger valve 5 is affected by the pressure, the pressure plate 51 continuously extrudes the spring 52, so that the spring 52 shrinks in the stroke groove 3. When the pressure increases to the lower part of the pressure plate 51 moving to the water inlet hole 4, the water inlet hole 4 is filled with sampling water. The initial height of the pressure plate 51 is greater than the height of the water inlet hole 4, so that as the collecting box 2 continuously dives, the water pressure gradually increases, and the water inlet hole 4 will not be opened in advance. When diving to the sampling depth, water will be filled. In addition, the opening position of the water inlet hole 4 can be adjusted by replacing the spring 52. When the diving depth needs to be increased, the spring 52 with greater elasticity can be replaced to increase the upper limit of the pressure plate 51 bearing the pressure, so that when diving to a deeper water area, the pressure plate 51 is pressed by a greater water pressure to move towards the water inlet hole 4. After the sampling is completed, the reel retracts the lifting rope 1, so that the lifting rope 1 drags the collecting box 2 to float out of the water. In the process of the collecting box 2 floating up, the pressure gradually decreases, and the spring 52 pushes the pressure plate 51 to quickly reset to avoid the collecting box 2 from being filled with water again.

[0043] Please refer to Figures 1-8 In some embodiments, the collecting box 2 comprises: a box body 21 in a cylindrical shape; a lifting pipe 22 arranged on the axis of the box body 21 and penetrating through the inner wall of the box body 21 at both ends, and the lifting rope 1 is arranged through the lifting pipe 22; the weight block 6 is in a ring shape and is sleeved on the circumferential outer wall of the lifting pipe 22; and the stroke groove 3 is in a ring shape and is arranged on the surface of the box body 21 and concentrically arranged with the lifting pipe 22.

[0044] In the above embodiment, the lifting pipe 22 is a hollow pipe, so that the lifting rope 1 can pass through the lifting pipe 22. A plurality of collecting boxes 2 can be simultaneously installed on the lifting rope 1. By replacing the springs 52 in the respective collecting boxes 2, the elastic force of the springs 52 in the respective collecting boxes 2 can be sequentially increased, so that a plurality of collecting boxes 2 can be simultaneously lifted. The lifting pipes 22 of the respective collecting boxes 2 are sleeved on the outside of the lifting rope 1. The collecting boxes 2 are continuously affected by the weight block 6 to dive. When diving to different depths, the spring 52 with smaller elastic force is used to take water first, and the spring 52 with greater elastic force is used to take water when diving to a greater depth. A float can be added outside the collecting box 2 at a shallower water level, so that when the collecting box 2 is full, the total weight and the buoyancy tend to be consistent, and the collecting box 2 no longer dives.

[0045] Please refer to Figures 1-8In some embodiments, the collection box 2 further comprises a positioning plate 23 arranged on the side of the box body 21 away from the stroke groove 3 and concentric with the lifting pipe 22; a double-ring plate 24 arranged on the side of the box body 21 close to the stroke groove 3 and sleeved on the outer side of the stroke groove 3; and the end of the lifting pipe 22 close to the stroke groove 3 extends outward from the box body 21.

[0046] In the above embodiment, when multiple collection boxes 2 are arranged on the lifting rope 1, after collection is completed, the lifting rope 1 pulls the lowermost collection box 2 upward, and when the lowermost collection box 2 encounters the upper collection box 2, the lifting rope 1 continues to lift upward, so that the gap between the double-ring plates 24 is clamped in the positioning plate 23 at the bottom of the previous collection box 2, and the top end of the lifting pipe 22 extends out of the collection box 2, so that the lifting pipe 22 first enters the lower part of the lifting pipe 22 of the previous collection box 2 and is guided by the lifting pipe 22. When the lifting pipe 22 enters the lifting pipe 22 of the previous collection box 2 and the double-ring plate 24 of the next collection box 2 enters the outer side of the positioning plate 23 of the previous collection box 2, each collection box 2 is limited by the lifting pipe 22 and the positioning plate 23, thereby avoiding the problem of collision between the collection boxes 2 when the lifting rope 1 is lifted upward.

[0047] Referring to Figures 1-8 In some embodiments, the lifting rope 1 comprises a rope body 11 connected to one end of the winding device; a lifting plate 12 arranged on the end of the rope body 11 away from the winding device; a hole plate 25 arranged on the inner wall of the lifting pipe 22; the rope body 11 is slidably arranged in the hole of the hole plate 25; and the diameter of the lifting plate 12 is greater than the diameter of the hole of the hole plate 25.

[0048] In the above embodiment, when the rope body 11 is driven upward by the winding device, the rope body 11 slides in the hole on the hole plate 25, and when the lifting plate 12 at the bottom end of the rope body 11 moves to the bottom surface of the hole plate 25, the rope body 11 is continuously lifted upward, the lifting plate 12 abuts against the bottom surface of the hole plate 25, so that the lifting plate 12 drives the collection box 2 to be lifted upward, and the hole plate 25 can reduce the distance between the lifting pipe 22 and the rope body 11, thereby avoiding the collection box 2 from shaking on the rope body 11 when the unmanned aerial vehicle flies after the collection box 2 is taken out of the water.

[0049] Referring to Figures 1-8 In some embodiments, the pressure trigger valve 5 further comprises a guide ring 53 arranged on the side of the pressure plate 51 close to the inner bottom surface of the stroke groove 3; the guide ring 53 is concentric with the lifting pipe 22; the pressure plate 51 is annular and concentric with the lifting pipe 22; a guide groove 54 is arranged through the inner bottom surface of the stroke groove 3, and the guide ring 53 is in sliding sealing with the stroke groove 3; the water inlet hole 4 is arranged in multiple numbers and arranged in an annular array on the side of the stroke groove 3 close to the lifting pipe 22; the water inlet hole 4 is arranged through the stroke groove 3; the water inlet hole 4 is arranged on the side of the guide ring 53 close to the lifting pipe 22; and the spring 52 is sleeved on the circumferential outer wall of the guide ring 53.

[0050] In the above embodiment, when the pressure plate 51 is moved towards the water inlet hole 4 by the water pressure, the guide ring 53 is pushed to slide in the guide groove 54, so that the pressure plate 51 is always parallel to the bottom surface of the stroke groove 3 during movement, avoiding the pressure plate 51 from being tilted after being squeezed by the water body, so that part of the water inlet hole 4 is opened in advance.

[0051] Please refer to Figures 1-8 In some embodiments, the counterweight 6 comprises: a first magnet 61 arranged on the bottom surface of the box body 21; and a second magnet 62 arranged at the end of the guide ring 53 away from the pressure plate 51; wherein the first magnet 61 and the second magnet 62 are annular and arranged concentrically with the lifting pipe 22.

[0052] In the above embodiment, the second magnet 62 has a large weight and is mainly used to increase the weight of the collection box 2, so that the collection box 2 can continuously dive in the water body. Due to the influence of the material and production batch of the spring 52, the same specification of the spring 52 has differences in elasticity due to the difference in the material itself, so that the spring 52 of the same batch or the spring 52 of different batches has differences in elasticity. By installing the magnet, the two magnets are constantly attracted to each other under the influence of the magnetic force when the guide ring 53 moves towards the water inlet hole 4, so that the spring 52 can be normally watered when it is squeezed by the pressure plate 51, avoiding the problem that the water pressure is not enough to completely compress the spring 52 when the water level is shallow, so that the collection box 2 can take water. Also, by replacing the magnet with different magnetic force, the problem of uneven elasticity of the spring 52 can be improved.

[0053] Please refer to Figures 1-8 In some embodiments, the box body 21 is composed of two complementary halves, and the joint surface of the two halves is detachably connected; the lifting pipe 22 penetrates the box body 21 at the end close to the water inlet hole 4; wherein a first sealing ring 27 is arranged between the lifting pipe 22 and the box body 21; and the joint surface of the two halves is provided with a second sealing ring 28.

[0054] In the above embodiment, in order to improve the replacement efficiency of the first magnet 61 and the second magnet 62, facilitate the cleaning and disinfection of the inner wall of the box body 21, avoid water pollution of the box body 21 after sampling, and improve the collection efficiency, the two half bodies are detachably connected, a thread is arranged on the joint surface of the two half bodies, the two half bodies are assembled through the thread connection, or a flange plate is arranged at the joint surface of the two half bodies, and the two half bodies are fixed through the flange connection. The flange can further improve the weight of the box body 21, increase the diving speed of the box body 21 in water, and further improve the collection efficiency. When the half bodies are disassembled, the half bodies are screwed to be out of the threaded connection, and the half bodies are rotated on the outer wall of the lifting pipe 22. The first sealing ring 27 seals the mounting hole of the lifting pipe 22 and the half body above the lifting pipe 22, so that water is prevented from entering the box body 21 from the mounting hole of the lifting pipe 22 due to high water pressure. The joint surface of the two half bodies is also provided with a second sealing ring 28. After the two half bodies are threadedly connected, the second sealing ring 28 seals the gap of the joint surface.

[0055] Please refer to Figures 1-8 In some embodiments, the surface of the pressure plate 51 is provided with a filter screen 29. The filter screen 29 is annular, the bottom end of the filter screen 29 is mounted on the surface of the pressure plate 51, and the inner ring of the filter screen 29 is arranged close to the inner wall of the stroke groove 3.

[0056] In the above embodiment, when the pressure plate 51 is moved towards the water inlet hole 4 by the water, the filter screen 29 moves with the pressure plate 51. When the pressure plate 51 is located below the water inlet hole 4, the filter screen 29 covers one side of the water inlet hole 4. When the water inlet hole 4 is filled with water, the filter screen 29 filters the water entering the water inlet hole 4, so that large particles, weeds and fish are prevented from entering the box body 21.

[0057] The above has described various embodiments of the present application. The above description is exemplary and is not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments.

[0058] The selection of terms used herein is intended to best explain the principles, practical applications or technical improvements in the art, or to enable other ordinary skilled persons in the art to understand the embodiments disclosed herein.

[0059] The above is only an optional embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A water source sampling device for a drone, comprising: The utility model relates to a kind of unmanned aerial vehicle water sampling device, including: Hoisting rope (1), one end is connected with the winding device on unmanned aerial vehicle; Collecting box (2), is located at the end of hoisting rope (1) away from winding device; Stroke slot (3), is located in the outer wall of collecting box (2); Water inlet hole (4), is located in the inner wall of stroke slot (3); Pressure trigger valve (5), is located in stroke slot (3); Counterweight (6), is located in collecting box (2); Pressure trigger valve (5) includes: Pressure plate (51), is located in stroke slot (3), and stroke slot (3) inner wall sliding seal; Spring (52), is located between the bottom surface of stroke slot (3) and pressure plate (51); Wherein The initial distance between pressure plate (51) and the bottom surface of stroke slot (3) is greater than the distance between spring (52) and the bottom surface of stroke slot (3).

2. The water source sampling device for a drone of claim 1, wherein, The collecting box (2) includes: Box body (21), is cylindrical; Hoisting pipe (22), is located on the axis of box body (21), both ends pass through the inner wall of box body (21) and is arranged, hoisting rope (1) passes through hoisting pipe (22) and is arranged; Counterweight (6) is annular, is arranged on the circumferential outer wall of hoisting pipe (22); Stroke slot (3) is annular, is arranged on the surface of box body (21), and is arranged concentrically with hoisting pipe (22).

3. The water source sampling device for a drone of claim 2, wherein, The collecting box (2) further includes: Positioning plate (23), is annular, is arranged on the side of box body (21) away from stroke slot (3), and is arranged concentrically with hoisting pipe (22); Double ring plate (24), is arranged on the side of box body (21) close to stroke slot (3), is arranged on the outside of stroke slot (3); The end of hoisting pipe (22) close to stroke slot (3) extends to the outside of box body (21).

4. The water source sampling device for a drone of claim 3, wherein, Hoisting rope (1) includes: Cable body (11), one end is connected with winding device; Lifting plate (12), is arranged on the end of cable body (11) away from winding device; The inner wall of hoisting pipe (22) is provided with hole plate (25), and cable body (11) is arranged in the hole of hole plate (25) in sliding mode, and the diameter of lifting plate (12) is greater than the hole diameter of hole plate (25).

5. The water source sampling device for a drone of claim 4, wherein, The pressure trigger valve (5) further includes: Guide ring (53), is arranged on the side of pressure plate (51) close to the bottom surface of stroke slot (3);Wherein Guide ring (53) is arranged concentrically with hoisting pipe (22); Pressure plate (51) is annular, and is arranged concentrically with hoisting pipe (22); Guide slot (54), is arranged through the bottom surface of stroke slot (3), and guide ring (53) and stroke slot (3) sliding seal;Wherein Water inlet hole (4) is provided with a plurality of, a plurality of water inlet hole (4) is annular array on the side of stroke slot (3) close to hoisting pipe (22), and water inlet hole (4) is arranged through stroke slot (3), and water inlet hole (4) is arranged on the side of guide ring (53) close to hoisting pipe (22), and spring (52) is arranged on the circumferential outer wall of guide ring (53).

6. The water source sampling device for a drone of claim 5, wherein, The counterweight (6) includes: First magnet (61), is arranged on the bottom surface of box body (21); Second magnet (62), is arranged on the end of guide ring (53) away from pressure plate (51);Wherein First magnet (61) and second magnet (62) are annular, and are arranged concentrically with hoisting pipe (22).

7. The water source sampling device for a drone of claim 6, wherein, The box body (21) is composed of two complementary halves, and the joint surface of the two halves is detachably connected; The hoisting pipe (22) penetrates the box body (21) at one end close to the water inlet hole (4); wherein A first sealing ring (27) is arranged between the hoisting pipe (22) and the box body (21). The joint surface of the two halves is provided with a second sealing ring (28).

8. The water source sampling device for a drone of claim 7, wherein, The surface of the pressure plate (51) is provided with a filter screen (29), the filter screen (29) is annular, the bottom end of the filter screen (29) is mounted on the surface of the pressure plate (51), and the inner ring of the filter screen (29) is arranged close to the inner wall of the stroke groove (3).

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