Automatic water ecological sample sampling device

Abstract

The invention discloses an automatic water ecology sample sampling device, and relates to the technical field of water ecology sampling, the automatic water ecology sample sampling device comprises an unmanned aerial vehicle, the bottom end of the unmanned aerial vehicle is provided with a hook, the hook is connected with one end of a pull rope, the bottom end of the pull rope is connected with a handle, and the bottom end of the handle is connected with a filter cartridge for collecting plankton; the bottom end of the filter cartridge is connected with a supporting rod, the bottom end of the supporting rod is connected with a sampling barrel used for taking water, the sampling barrel is provided with an opening and closing device, the opening and closing device comprises a first opening and closing mechanism arranged at the bottom of the sampling barrel, and a second opening and closing mechanism used for opening and closing an opening in the top of the sampling barrel is arranged on the sampling barrel above the opening and closing mechanism. The water taking work is completed by moving the sampling barrel, the bottom opening of the sampling barrel does not need to be manually or electrically opened and closed for water taking, the top opening of the sampling barrel does not need to be manually or electrically opened and closed, the sampling work is facilitated, the top opening of the filter cylinder does not need to be manually or electrically opened and closed, and water surface floating objects are conveniently sampled.

Description

Technical Field

[0001] The present invention relates to the technical field of water ecological sampling, in particular to an automatic water ecological sample sampling device. Background Art

[0002] Water sampling is a core component of the water ecology monitoring system. Its quality directly impacts whether the water sample testing and analysis data accurately reflect the true conditions of rivers, lakes, and other water bodies. Traditional water ecology sampling relies primarily on manual operation of sampling tools, such as sampling bottles and buckets. In complex terrain or harsh environments, not only do samplers face high safety risks, but manual operation is also inefficient, making it difficult to meet the comprehensive, timely, and accurate data requirements of modern water ecology monitoring.

[0003] With the vigorous development of drone technology, its application in the field of water ecological sampling has brought new ideas and methods to this work. Drones have the advantages of being maneuverable and flexible, being able to quickly reach the monitoring area, and being able to operate in complex terrain and harsh environments. They can be equipped with sampling devices to achieve remote and fixed-point sampling of water bodies, effectively reducing the safety risks of sampling personnel and improving the convenience and efficiency of sampling work. However, in the existing technology, there are obvious technical defects when using sampling buckets carried by drones or other mobile devices to collect water. Specifically, during the water collection process, it is necessary to manually or electrically open and close the bottom opening of the sampling bucket to complete the water collection. At the same time, it is also necessary to manually or electrically open and close the top opening of the sampling bucket and the top opening of the filter cartridge. These operating steps are cumbersome, which increases the workload of the operator. In addition, they are easily disturbed by external factors during the operation, resulting in an unstable sampling process and difficulty in ensuring the representativeness and accuracy of water samples, which seriously affects the efficiency and quality of water ecological sampling.

[0004] In summary, existing water ecological sampling devices have deficiencies in terms of automation, ease of operation, and sampling efficiency, and are unable to meet the needs of actual sampling work. Therefore, it is urgent to design an automatic water ecological sampling device that can automatically control the opening and closing of the sampling bucket and filter cartridge, simplify the operation process, and improve sampling efficiency and quality to solve the problems existing in the existing technology. Summary of the Invention

[0005] The purpose of the present invention is to provide an automatic water ecological sample sampling device to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] An automatic water ecological sample sampling device includes a drone, a hook is provided at the bottom end of the drone, the hook is connected to one end of a pull rope, the bottom end of the pull rope is connected to a handle, the bottom end of the handle is connected to a filter cartridge for collecting plankton, the bottom end of the filter cartridge is connected to a support rod, the bottom end of the support rod is connected to a sampling bucket for taking water, an opening and closing device is provided on the sampling bucket, the opening and closing device includes an opening and closing mechanism 1 provided at the bottom of the sampling bucket, an opening and closing mechanism 2 is provided on the sampling bucket above the opening and closing mechanism for opening and closing the top opening of the sampling bucket, a transmission mechanism is connected to the opening and closing mechanism 2, the transmission mechanism is connected to the opening and closing mechanism 3 for opening and closing the top opening of the filter cartridge, and the transmission mechanism is used to connect the opening and closing mechanism 2 and the opening and closing mechanism 3.

[0008] Furthermore, the opening and closing mechanism is used to open and close the bottom opening of the sampling barrel.

[0009] Furthermore, the opening and closing mechanism includes a retaining ring provided on the inner wall of the bottom of the sampling barrel, the retaining ring is provided with a limiting rod, and the limiting rod is slidably connected to a floating block for moving and blocking the opening of the retaining ring.

[0010] Furthermore, the second opening and closing mechanism includes a rotating shaft on the top side wall of the sampling barrel, one end of the rotating shaft is connected to a cover plate for rotating and sealing the top opening of the sampling barrel, and a floating block 2 is provided on the bottom of the cover plate near the bottom end of the sampling barrel. A torsion spring 1 is provided at the place where the rotating shaft is rotatably connected to the sampling barrel for flipping and opening the cover plate.

[0011] Furthermore, the opening and closing mechanism three includes a support shaft on the top side wall of the rotatable clamping filter cartridge, the support shaft is connected to a cover body for flipping and sealing the top opening of the filter cartridge, and a torsion spring two for flipping and opening the cover body is provided at the place where the support shaft is connected to the filter cartridge.

[0012] Furthermore, the transmission mechanism includes a pulley 1 connected to the outer end of the support shaft, the pulley 1 is connected to a transmission belt, and the transmission belt is connected to a pulley 2.

[0013] Furthermore, the retaining ring is used to limit the floating block from moving downward and separating from the sampling barrel. The limiting rod is provided with at least two groups symmetrically distributed on the retaining ring. The floating block is divided into two parts, the upper half is a hard circular plate structure, and the lower half is a conical structure.

[0014] Furthermore, the rotating shaft rotates through the sampling barrel, the cover plate flip angle is less than ninety degrees, the torque generated by the buoyancy of the floating block 2 is greater than the sum of the restoring torques of torsion spring 1 and torsion spring 2, and one end of the torsion spring 1 is connected to the rotating shaft, and the other end is connected to the outer wall of the sampling barrel.

[0015] Furthermore, the support shaft rotates and penetrates the filter cartridge, the cover body is a filter mesh structure, one end of the torsion spring is connected to the support shaft, and the other end is connected to the outer wall of the filter cartridge.

[0016] Furthermore, the pulley one and the pulley two are on the same vertical line, and the transmission belt is used to transmit and connect the pulley one and the pulley two.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. Fly the drone above the water surface where sampling is required, and lower the drone. When the drone descends, the hook, pull rope, handle, filter cartridge, support rod and sampling bucket will move downward. When the bottom of the sampling bucket touches the water surface, the float moves upward at the limit rod as soon as it touches the water surface. Water enters the sampling bucket through the gap between the retaining ring and the float through the bottom opening of the sampling bucket. When the water completely enters the sampling bucket, move the drone upward to make the sampling bucket leave the water surface. The water in the sampling bucket moves downward, pushing the float to move downward and contact the retaining ring to limit the water in the sampling bucket from flowing out through the bottom opening of the sampling bucket. At this time, the water collection work is completed, so that the water collection work is completed by moving the sampling bucket, and there is no need to manually or electrically open and close the bottom opening of the sampling bucket to collect water.

[0019] 2. The water in the sampling barrel contacts the second float, pushing the second float upward. The second float pushes the cover to flip through the shaft. When the shaft rotates, the torsion spring is stressed. When the cover flips to a horizontal state, the cover closes the top opening of the sampling barrel, avoiding the need to manually or electrically open and close the top opening of the sampling barrel, making it easier to perform sampling work.

[0020] 3. Operate the above steps to move the drone downward so that the sampling bucket quickly enters the water. The kinetic energy of the cover is consumed by the work done by the water resistance during the water entry process. The kinetic energy is not enough to overcome the work done by the resistance and the work done by the driving torque of the second floating block. The cover cannot complete the flip, so that the filter cartridge moves down into the water. After the top of the filter cartridge is about to touch the water surface, move the drone upward, and the filter cartridge moves upward so that the floating objects on the top of the filter cartridge enter the filter cartridge. The sampling bucket follows the filter cartridge to move upward. After the cover is separated from the water, the water resistance disappears, and the second floating block pushes the cover to flip to a horizontal state through the rotating shaft. The rotation of the rotating shaft drives the second pulley to rotate, which is driven by the transmission belt to rotate. The rotation of the first pulley drives the support shaft to rotate. The rotation of the support shaft drives the cover body to flip to a horizontal state to seal the top opening of the filter cartridge. When the support shaft rotates, the second torsion spring is subjected to force to avoid manual or electric opening and closing of the top opening of the filter cartridge, making it convenient to sample floating objects on the water surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a structural diagram of the opening and closing device in the present invention;

[0023] Figure 3 This is a structural diagram of an opening and closing mechanism in the present invention;

[0024] Figure 4It is a schematic diagram of the second structure of the opening and closing mechanism in the present invention;

[0025] Figure 5 Schematic diagram of three structures of the opening and closing mechanism in the present invention;

[0026] Figure 6 It is a structural schematic diagram of the transmission mechanism in the present invention.

[0027] In the picture: 1. Drone; 2. Hook; 3. Pull rope; 4. Handle; 5. Filter cartridge; 6. Support rod; 7. Sampling bucket; 8. Opening and closing device;

[0028] 81. Opening and closing mechanism 3; 82. Transmission mechanism; 83. Opening and closing mechanism 2; 84. Opening and closing mechanism 1;

[0029] 811. Support shaft; 812. Cover; 813. Torsion spring 2;

[0030] 821. Pulley 1; 822. Transmission belt; 823. Pulley 2;

[0031] 831, rotating shaft; 832, cover plate; 833, floating block 2; 834, torsion spring 1;

[0032] 841. retaining ring; 842. limiting rod; 843. floating block 1. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] Example 1

[0035] See also Figure 1-3The automatic water ecological sample sampling device includes a drone 1, a hook 2 is provided at the bottom of the drone 1, the hook 2 is connected to one end of a pull rope 3, the bottom end of the pull rope 3 is connected to a handle 4, the bottom end of the handle 4 is connected to a filter cartridge 5 for collecting plankton, the bottom end of the filter cartridge 5 is connected to a support rod 6, the bottom end of the support rod 6 is connected to a sampling bucket 7 for taking water, an opening and closing device 8 is provided on the sampling bucket 7, the opening and closing device 8 includes an opening and closing mechanism 84 provided at the bottom of the sampling bucket 7, the opening and closing mechanism 84 is used to open and close the bottom opening of the sampling bucket 7, and the opening and closing mechanism 84 includes a filter cartridge 5 provided at the bottom of the sampling bucket 7. The retaining ring 841 on the inner wall of the bottom is provided with a limiting rod 842, and the limiting rod 842 is slidably connected with a floating block 843 for moving and blocking the opening of the retaining ring 841. The retaining ring 841 is used to limit the floating block 843 from moving downward and separating from the sampling barrel 7. The limiting rod 842 is provided with at least two groups symmetrically distributed on the retaining ring 841. The floating block 843 is divided into two parts, the upper half is a circular plate structure with a counterweight (the force generated by the buoyancy of the floating block 843 is greater than the gravity of the upper half of the floating block 843), and the lower half is a cone-like structure.

[0036] The drone 1 flies above the water surface where sampling is required, and the drone 1 is lowered. When the drone 1 is lowered, the hook 2, pull rope 3, handle 4, filter cartridge 5, support rod 6 and sampling bucket 7 follow and move downward. When the bottom of the sampling bucket 7 contacts the water surface, the float 843 contacts the water surface and moves upward at the limit rod 842. The water enters the sampling bucket 7 through the gap between the retaining ring 841 and the float 843 through the bottom opening of the sampling bucket 7. When the water completely enters the sampling bucket 7, the drone 1 is moved upward to make the sampling bucket 7 leave the water surface. The water in the sampling bucket 7 moves downward, pushing the float 843 to move downward and contact the retaining ring 841 to limit the water in the sampling bucket 7 from flowing out through the bottom opening of the sampling bucket 7. At this time, the water collection work is completed, so that the water collection work is completed by moving the sampling bucket 7, and there is no need to manually or electrically open and close the bottom opening of the sampling bucket 7 to collect water.

[0037] Example 2

[0038] See also Figure 1-4, an opening and closing mechanism 84 is provided on the sampling barrel 7 above the sampling barrel 7 for opening and closing the top opening of the sampling barrel 7. The opening and closing mechanism 83 includes a rotating shaft 831 on the top side wall of the sampling barrel 7 for rotating and clamping. One end of the rotating shaft 831 is connected to a cover plate 832 for rotating and sealing the top opening of the sampling barrel 7. A floating block 833 is provided on the bottom of the cover plate 832 near the bottom end of the sampling barrel 7. The rotating shaft 831 is rotatably connected to the sampling barrel 7 and is provided with a cover for flipping open. The torsion spring 1 834 of the plate 832 and the rotating shaft 831 rotate through the sampling barrel 7. The flip angle of the cover 832 is less than ninety degrees. The cover 832 is normally tilted in the sampling barrel 7 and the float 2 833 is at the bottom of the cover 832. The torque generated by the buoyancy of the float 2 833 is greater than the sum of the restoring torques of the torsion spring 1 834 and the torsion spring 2 813. One end of the torsion spring 1 834 is connected to the rotating shaft 831, and the other end is connected to the outer wall of the sampling barrel 7.

[0039] The water in the sampling barrel 7 contacts the second float 833, pushing the second float 833 to move upward, and the second float 833 pushes the cover 832 to flip through the rotating shaft 831. When the rotating shaft 831 rotates, the torsion spring 834 is subjected to force. When the cover 832 flips to a horizontal state, the cover 832 closes the top opening of the sampling barrel 7, avoiding the need to manually or electrically open and close the top opening of the sampling barrel 7, making it easier to perform sampling work.

[0040] Example 3

[0041] See also Figure 1-6 The opening and closing mechanism 2 83 is connected to a transmission mechanism 82, which is used to connect the opening and closing mechanism 2 83 and the opening and closing mechanism 3 81. The transmission mechanism 82 includes a pulley 1 821 connected to the outer end of the support shaft 811, a transmission belt 822 connected to the pulley 1 821, and a transmission belt 822 connected to the pulley 2 823. The pulley 1 821 and the pulley 2 823 are on the same vertical line. The transmission belt 822 is used to transmit the connection between the pulley 1 821 and the pulley 2 823. The transmission mechanism 82 is connected to the pulley 1 821 and the pulley 2 823. The opening and closing mechanism 3 81 of the top opening of the filter cartridge 5 includes a support shaft 811 that is rotatably engaged with the top side wall of the filter cartridge 5. The support shaft 811 is connected to a cover body 812 for flipping and sealing the top opening of the filter cartridge 5. A torsion spring 2 813 for flipping and opening the cover body 812 is provided at the place where the support shaft 811 is connected to the filter cartridge 5. The support shaft 811 rotates and passes through the filter cartridge 5. The cover body 812 is a filter mesh structure. One end of the torsion spring 813 is connected to the support shaft 811, and the other end is connected to the outer wall of the filter cartridge 5.

[0042] Operate the above steps to move the drone 1 downward, so that the sampling bucket 7 quickly enters the water. The kinetic energy of the cover 832 is consumed by the water resistance during the water entry process. The kinetic energy is not enough to overcome the resistance work and the driving torque work of the floating block 833. The cover 832 cannot complete the flip, so that the filter cartridge 5 moves downward into the water. When the top of the filter cartridge 5 is about to touch the water surface, the drone 1 is moved upward, and the filter cartridge 5 moves upward so that the floating objects on the top of the filter cartridge 5 enter the filter cartridge 5. The sampling bucket 7 moves upward with the filter cartridge 5. After the cover 832 is separated from the water, the water resistance disappears. The second floating block 833 pushes the cover plate 832 to flip to a horizontal state through the rotating shaft 831. The rotation of the rotating shaft 831 drives the second pulley 823 to rotate, and the transmission belt 822 drives the first pulley 821 to rotate. The rotation of the first pulley 821 drives the support shaft 811 to rotate. The rotation of the support shaft 811 drives the cover body 812 to flip to a horizontal state to cover the top opening of the filter cartridge 5. When the support shaft 811 rotates, the second torsion spring 813 is subjected to force, avoiding manual or electric opening and closing of the top opening of the filter cartridge 5, making it convenient to sample floating objects on the water surface.

[0043] Working principle: The present invention flies the drone 1 to the surface of the water where sampling is required, and lowers the drone 1. When the drone 1 is lowered, the hook 2, the pull rope 3, the handle 4, the filter cartridge 5, the support rod 6 and the sampling bucket 7 follow and move downward. When the bottom of the sampling bucket 7 contacts the water surface, the float 843 contacts the water surface and moves upward at the limit rod 842. Water enters the sampling bucket 7 through the opening at the bottom of the sampling bucket 7 and the gap between the retaining ring 841 and the float 843. When the water completely enters the sampling bucket 7, the drone 1 is moved upward to make the sampling bucket 7 leave the water surface. The water in the sampling bucket 7 moves downward to push The first float 843 moves downward to contact the retaining ring 841 to limit the water in the sampling bucket 7 from flowing out through the bottom opening of the sampling bucket 7. At this time, the water collection work is completed, so that the water collection work is completed by moving the sampling bucket 7, and there is no need to manually or electrically open and close the bottom opening of the sampling bucket 7 to collect water; the water in the sampling bucket 7 contacts the second float 833, pushing the second float 833 to move upward, and the second float 833 pushes the cover plate 832 to flip through the rotating shaft 831. When the rotating shaft 831 rotates, the torsion spring 834 is stressed. When the cover plate 832 flips to a horizontal state, the cover plate 832 closes the top opening of the sampling bucket 7. The top of the sampling barrel 7 is opened and closed manually or electrically, which makes it easier to carry out sampling. The above steps are performed to move the drone 1 downward, so that the sampling barrel 7 quickly enters the water. The kinetic energy of the cover 832 is consumed by the water resistance during the water entry process. The kinetic energy is not enough to overcome the resistance work and the driving torque work of the floating block 833. The cover 832 cannot be turned over, so that the filter cartridge 5 moves down and enters the water. After the top of the filter cartridge 5 is about to touch the water surface, the drone 1 is moved upward, and the filter cartridge 5 moves upward so that the floating objects on the top of the filter cartridge 5 enter the filter cartridge 5. The sampling barrel 7 moves up with the filter cartridge 5, and the cover is turned over. After the plate 832 is separated from the water, the water resistance disappears, and the floating block 833 pushes the cover plate 832 to flip to a horizontal state through the rotating shaft 831. The rotation of the rotating shaft 831 drives the pulley 2 823 to rotate, and the pulley 1 821 is driven to rotate by the transmission belt 822. The rotation of the pulley 1 821 drives the support shaft 811 to rotate. The rotation of the support shaft 811 drives the cover body 812 to flip to a horizontal state to cover the top opening of the filter cartridge 5. When the support shaft 811 rotates, the torsion spring 2 813 is subjected to force, avoiding manual or electric opening and closing of the top opening of the filter cartridge 5, making it convenient to sample floating objects on the water surface.

[0044] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An automatic water ecological sample sampling device, comprising a drone (1), wherein the bottom end of the drone (1) is provided with a hook (2), characterized in that: The hook (2) is connected to one end of a pull rope (3), the bottom end of the pull rope (3) is connected to a handle (4), the bottom end of the handle (4) is connected to a filter cartridge (5) for collecting plankton, the bottom end of the filter cartridge (5) is connected to a support rod (6), the bottom end of the support rod (6) is connected to a sampling bucket (7) for taking water, an opening and closing device (8) is provided on the sampling bucket (7), the opening and closing device (8) comprises an opening and closing mechanism (1) (84) provided at the bottom of the sampling bucket (7), an opening and closing mechanism (2) (83) for opening and closing the top opening of the sampling bucket (7) is provided on the sampling bucket (7) above the opening and closing mechanism (84), the opening and closing mechanism (2) (83) is connected to a transmission mechanism (82), the transmission mechanism (82) is connected to an opening and closing mechanism (3) (81) for opening and closing the top opening of the filter cartridge (5), and the transmission mechanism (82) is used to connect the opening and closing mechanism (2) (83) and the opening and closing mechanism (3) (81).

2. The automatic water ecological sample sampling device according to claim 1, characterized in that: The opening and closing mechanism (84) is used to open and close the bottom opening of the sampling barrel (7).

3. The automatic water ecological sample sampling device according to claim 1, characterized in that: The opening and closing mechanism (84) includes a retaining ring (841) provided on the inner wall of the bottom of the sampling barrel (7), a limiting rod (842) provided on the retaining ring (841), and a floating block (843) slidably connected to the limiting rod (842) for moving and blocking the opening of the retaining ring (841).

4. The automatic water ecological sample sampling device according to claim 1, characterized in that: The second opening and closing mechanism (83) includes a rotating shaft (831) that is rotatably connected to the top side wall of the sampling barrel (7); one end of the rotating shaft (831) is connected to a cover plate (832) for rotatably sealing the top opening of the sampling barrel (7); a second floating block (833) is provided on the bottom of the cover plate (832) near one end of the bottom of the sampling barrel (7); and a torsion spring (834) for flipping and opening the cover plate (832) is provided at the position where the rotating shaft (831) is rotatably connected to the sampling barrel (7).

5. The automatic water ecological sample sampling device according to claim 1, characterized in that: The third opening and closing mechanism (81) comprises a support shaft (811) rotatably engaged with the top side wall of the filter cartridge (5); the support shaft (811) is connected to a cover body (812) for flipping and sealing the top opening of the filter cartridge (5); and a second torsion spring (813) for flipping and opening the cover body (812) is provided at the location where the support shaft (811) is connected to the filter cartridge (5).

6. The automatic water ecological sample sampling device according to claim 1, characterized in that: The transmission mechanism (82) includes a pulley (821) connected to the outer end of the support shaft (811), a transmission belt (822) connected to the pulley (821), and the transmission belt (822) connected to the pulley (823).

7. The automatic water ecological sample sampling device according to claim 3, characterized in that: The retaining ring (841) is used to limit the downward movement of the floating block (843) and the separation of the sampling barrel (7). The limiting rod (842) is provided with at least two groups symmetrically distributed on the retaining ring (841). The floating block (843) is divided into two parts, the upper part is a hard circular plate structure, and the lower part is a conical structure.

8. The automatic water ecological sample sampling device according to claim 4, characterized in that: The rotating shaft (831) rotates and passes through the sampling barrel (7), the cover plate (832) flips at an angle less than ninety degrees, the torque generated by the buoyancy of the floating block 2 (833) is greater than the sum of the restoring torques of the torsion spring 1 (834) and the torsion spring 2 (813), and one end of the torsion spring 1 (834) is connected to the rotating shaft (831), and the other end is connected to the outer wall of the sampling barrel (7).

9. The automatic water ecological sample sampling device according to claim 5, characterized in that: The support shaft (811) rotates and penetrates the filter cartridge (5); the cover body (812) is a filter mesh structure; one end of the torsion spring (813) is connected to the support shaft (811) and the other end is connected to the outer wall of the filter cartridge (5).

10. The automatic water ecological sample sampling device according to claim 6, characterized in that: The pulley one (821) and the pulley two (823) are on the same vertical line, and the transmission belt (822) is used for transmission connection between the pulley one (821) and the pulley two (823).

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