River water collection system

Abstract

The invention provides a river water collection system, which belongs to the technical field of water body sampling, and comprises a sampling barrel body, a balancing weight body, a first mounting column, an unmanned aerial vehicle, a sampling placement table, a sampling barrel separation unit, a water sample collection unit and a sampling barrel cleaning unit, the unmanned aerial vehicle drives the first mounting column, the sampling barrel body and the balancing weight body which are mounted together to fly to the position above a target water area, the unmanned aerial vehicle descends to sink the sampling barrel body into the water by a specified depth, river water enters the sampling barrel, and after sampling is completed, the unmanned aerial vehicle returns to a sampling placement table; the sampling barrel separation unit separates and takes down the sampling barrel body and the balancing weight body from the first mounting column together, then the water sample collection unit drives the balancing weight body and the sampling barrel body to turn over together, a water sample in the balancing weight body and the sampling barrel body is poured into a collection bottle, and then the sampling barrel cleaning unit disassembles the balancing weight body from the sampling barrel body. And the interior of the sampling barrel body is washed and blow-dried, so that the interior of the sampling barrel body is cleaned.

Description

Technical Field

[0001] This invention belongs to the field of water sampling technology, and in particular relates to a river water sampling system. Background Technology

[0002] Water quality monitoring is an important foundation for environmental protection, hydrological research, and public health management. Among these, river water sampling is a key step in obtaining raw water quality data. The ease of operation, the representativeness of the samples, and the ability to prevent cross-contamination directly affect the accuracy and reliability of the monitoring results. Therefore, the development of efficient and reliable river water sampling systems has always been a focus of attention for those skilled in the art.

[0003] Existing sampling devices often use rope-suspended sampling bottles or weighted buckets, which are manually or mechanically lowered into the water to a specific depth for sampling. However, after each sampling, some water sample, microorganisms, or sediment remain on the inner wall of the sampling container. If continuous sampling is required at different locations or at different times, the container must be brought back to the shore for thorough manual cleaning and drying. Otherwise, the residue will seriously contaminate subsequent samples, leading to data distortion. This process is time-consuming, labor-intensive, inefficient, and difficult to guarantee the cleaning quality in complex field environments, failing to meet the needs of modern high-frequency, multi-location automated monitoring. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide a river water collection system to solve the problem that it is difficult to ensure the cleaning quality of sampling bottles in complex field environments.

[0005] To achieve the above and other related objectives, the present invention provides a river water collection system, the river water collection system comprising: The sampler includes a sampling cylinder body, a counterweight body, a first mounting column, and a drone. The counterweight body is detachably mounted on the lower end face of the sampling cylinder body. The sampling cylinder body is detachably mounted on the first mounting column. A sampling port is provided on the side wall of the sampling cylinder body. The sampling cylinder body is rotatably mounted on the lower end face of the first mounting column. The rotation axis of the sampling cylinder body coincides with the center line of the first mounting column. The drone and the first mounting column are fixedly connected by a connecting rope. The system includes a mobile platform, a sampling placement platform, a sampling cylinder separation unit, a water sample collection unit, and a sampling cylinder cleaning unit. All three units are fixedly mounted on the mobile platform. The sampling cylinder separation unit is located between the water sample collection unit and the sampling cylinder cleaning unit, and is situated below the sampling placement platform. The sampling cylinder separation unit includes a first clamping block and a sliding block. The first clamping block is mounted on the sliding block and clamps the counterweight body placed on the sampling placement platform after sampling. The sliding block is positioned on the first clamping block... The sampling cylinder body is removed from the first mounting column under the clamping of the sampling cylinder body. The water sample collection unit includes a rotating block and several collection bottles. The rotating block is rotatably mounted on the sliding block. Under the clamping of the sampling cylinder body by the first clamping block, the rotating block rotates and pours the water in the sampling cylinder body into the collection bottles. The sampling cylinder cleaning unit includes a gripper, a counterweight separation assembly, a water nozzle, and an air nozzle. The gripper holds the sampling cylinder body after the water has been poured out. The counterweight separation assembly removes the counterweight body from the sampling cylinder body. The water nozzle sprays water to rinse the inner wall of the sampling cylinder body. The air nozzle dries the inner wall of the sampling cylinder body after the water has been sprayed and rinsed.

[0006] As described above, the river water collection system of the present invention has at least the following beneficial effects: After sampling, the first clamping block and sliding block on the mobile platform can automatically separate the sampling tube body. The rotating block can transfer and collect the water sample inside the sampling tube body. The second clamping block and the sixth rotating power source remove the counterweight body from the sampling tube body. The water nozzle extends into the sampling tube body for rinsing. After rinsing, the air nozzle extends into the sampling tube body to dry the inner wall of the sampling tube body. This operation greatly reduces manual intervention, improves sampling efficiency, avoids cross-contamination between samples, ensures no residue on the inner wall of the sampling tube body, and guarantees the representativeness of the sample and the accuracy of subsequent testing. Attached Figure Description

[0007] Figure 1 The diagram shows the structural schematics of the mobile platform, sampling placement table, sampling tube separation unit, water sample collection unit, and sampling tube cleaning unit of the present invention. Figure 2 The diagram shows the structural schematics of the sampling cylinder body, counterweight body, first mounting column, and UAV related to the present invention. Figure 3 The exploded view shown is a partial cross-section of the sampling cylinder body and the counterweight related to the present invention. Figure 4 The diagram shown is an exploded view of the mounting rod and guide post of this invention. Figure 5The diagram shows a structural schematic related to the wedge-shaped block and the second guide channel of the present invention. Figure 6 Shown is a partial cross-sectional view of the guide post of the present invention; Figure 7 The diagram shown is an exploded view of the water filter plate and sampling port of the present invention. Figure 8 Shown is a partial cross-sectional view of the first mounting post of the present invention; Figure 9 The diagram shown is a schematic representation of the internal structure of the first mounting column of the present invention. Figure 10 The image shown is a partial cross-sectional view related to the pressure-bearing piston of the present invention. Figure 11 The view shown is a partial cross-sectional view related to the driven piston of the present invention. Figure 12 The diagram shows the structural schematics related to the guide cylinder, the first arched guide ramp, and the first guide channel of the present invention. Figure 13 The diagram shows the structure of the support cylinder, the first V-shaped guide ramp, and the hexagonal screwdriver of the present invention. Figure 14 The diagram shows the structure of the semi-circular baffle and the first telescopic power source of the present invention. Figure 15 The diagram shown is an exploded view of the rotating block and sliding block of this invention. Figure 16 The diagram shown is an exploded view related to the water sample collection unit of this invention. Figure 17 The image shown is a partial cross-sectional view related to the sampling cylinder cleaning unit of the present invention. Figure 18 The diagram shown is an exploded view relating to the air pump, the second mounting column, and the sixth telescopic power source of the present invention. Detailed Implementation

[0008] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0009] Please see Figures 1 to 18It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0010] The following embodiments are for illustrative purposes only. These embodiments can be combined and are not limited to the content shown in any single embodiment below.

[0011] Please see Figures 1 to 18 The present invention provides a river water collection system, the river water collection system comprising: The sample tube body 101, the counterweight body 102, the first mounting post 103, and the drone 104 are provided. The counterweight body 102 is detachably mounted on the lower end face of the sample tube body 101. The sample tube body 101 is detachably mounted on the first mounting post 103. A sampling port 105 is provided on the side wall of the sample tube body 101. The sample tube body 101 is rotatably mounted on the lower end face of the first mounting post 103. The rotation axis of the sample tube body 101 coincides with the center line of the first mounting post 103. The drone 104 and the first mounting post 103 are fixedly connected by a connecting rope 106. The mobile platform 201, sampling placement table 202, sampling cylinder separation unit, water sample collection unit, and sampling cylinder cleaning unit are all fixedly installed on the mobile platform 201. The sampling cylinder separation unit is located between the water sample collection unit and the sampling cylinder cleaning unit, and is located below the sampling placement table 202. The sampling cylinder separation unit includes a first clamping block 301 and a sliding block 302. The first clamping block 301 is disposed on the sliding block 302. The first clamping block 301 clamps the counterweight body 102 placed on the sampling placement table 202 after sampling. The sliding block 302, under the clamping of the sampling cylinder body 101 by the first clamping block 301, will... The sampling cylinder body 101 is removed from the first mounting post 103. The water sample collection unit includes a rotating block 401 and several collection bottles 402. The rotating block 401 is rotatably mounted on the sliding block 302. Under the clamping of the sampling cylinder body 101 by the first clamping block 301, the rotating block 401 rotates and pours the water in the sampling cylinder body 101 into the collection bottles 402. The sampling cylinder cleaning unit includes a clamp 501, a counterweight separation assembly, a water nozzle 502, and an air nozzle 503. The clamp 501 clamps the sampling cylinder body 101 after the water has been poured out. The counterweight separation assembly removes the counterweight body 102 from the sampling cylinder body 101. The water nozzle 502 sprays water to rinse the inner wall of the sampling cylinder body 101. The air nozzle 503 dries the inner wall of the sampling cylinder body 101 after the water has been sprayed and rinsed. The mobile platform 201 is not limited here; its function is to provide transportation power, and it can be a pickup truck, a small van, etc. In this embodiment, the drone 104, via the connecting rope 106, drives the first mounting column 103, the sampling cylinder body 101, and the counterweight body 102, which are installed together, to fly above the target water area. Then, the drone 104 descends vertically to submerge the sampling cylinder body 101 into the water at a specified depth. River water enters the sampling cylinder through the sampling port 105. After sampling is completed, the drone 104 returns to the mobile platform 201 and stops on the sampling placement platform 202. The first clamping block 301 on the sliding block 302 clamps the counterweight body 102. Then, the sliding block 302 moves downward, lifting the sampling cylinder body 101. The counterweight body 102 is separated from the first mounting post 103 and removed together with the counterweight body 102. Then, the rotating block 401 drives the clamped counterweight body 102 and the sampling cylinder body 101 to flip together, and the water sample inside is poured into the collection bottle 402 through the sampling port 105. After the sampling cylinder body 101 is emptied, it is reset and taken over by the clamp 501 and transferred. The counterweight separation assembly removes the counterweight body 102 from the sampling cylinder body 101. Then, the water nozzle 502 is inserted into the sampling cylinder body 101 to rinse it. After rinsing, the air nozzle 503 is inserted to dry the inner wall of the sampling cylinder body 101, completing the cleaning.

[0012] After sampling, the first clamping block 301 and sliding block 302 on the mobile platform 201 can automatically separate the sampling tube body 101. The rotating block 401 can transfer and collect the water sample inside the sampling tube body 101. The counterweight separation component removes the counterweight body 102 from the sampling tube body 101. The water nozzle 502 extends into the sampling tube body 101 for rinsing. After rinsing, the air nozzle 503 extends into the sampling tube body 101 to dry the inner wall. This operation greatly reduces manual intervention, improves sampling efficiency, avoids cross-contamination between samples, ensures no residue on the inner wall of the sampling tube body, and guarantees the representativeness of the sample and the accuracy of subsequent testing.

[0013] Please see Figure 1 , Figure 2 , Figure 8 , Figure 12 and Figure 13 The river water collection system also includes a guide cylinder 203, a support cylinder 204, two first arched guide ramps 205, two protrusions 206, two second arched guide ramps 207, two mounting brackets 208, and two first V-shaped guide ramps 209. The outer wall of the guide cylinder 203 is fixedly installed on the sampling platform 202. The guide cylinder 203 penetrates the upper and lower end faces of the sampling platform 202. The lower end face of the guide cylinder 203 is lower than the lower end face of the sampling platform 202. The inner diameter of the guide cylinder 203 is the same as the diameter of the first mounting column 103. Two first arched guide ramps 205 are formed inside the guide cylinder 203. The two first arched guide ramps 205 are arranged opposite to each other, and a first guide channel 210 is formed at the end of the two first arched guide ramps 205 that is close to each other. The two first guide channels 210 are arranged opposite to each other along the width direction of the sampling platform 202. A protrusion 206 is fixedly installed on the upper end face of the middle part of each first arched guide ramp 205. The two protrusions 206 are located on both sides of the length direction of the sampling platform 202. A second protrusion is formed on the upper end face of each protrusion 206. An arched guide ramp 207 is provided, the top of which is at the same height as the upper end face of the guide cylinder 203. A first annular guide ramp 107 is provided at the lower part of the first mounting column 103. Two first guide blocks 108 are fixedly installed on the side wall of the upper part of the first mounting column 103. The two first guide blocks 108 are arranged opposite each other along the radial direction of the first mounting column 103. The cross-section of the first guide block 108 is the same as the transverse surface of the first guide channel 210. A third arched guide ramp 109 is provided at the lower end face of each first guide block 108. Two mounting brackets 208 are fixedly mounted on the lower end face of the sampling platform 202. The two mounting brackets 208 are located on both sides of the sampling platform 202 in the width direction. The lower end faces of the two mounting brackets 208 are lower than the lower end face of the guide cylinder 203. The outer wall of the support cylinder 204 is fixedly mounted on the two mounting brackets 208. The central axis of the support cylinder 204 coincides with the central axis of the guide cylinder 203. The upper inner diameter of the support cylinder 204 is the same as the inner diameter of the guide cylinder 203. The upper height of the support cylinder 204 is the same as the upper height of the first mounting column 103. The upper inner wall of the support cylinder 204 has two first V-shaped guide slopes 209, which are arranged opposite each other along the width direction of the sampling platform 202. The lower inner wall of the support cylinder 204 has a second annular guide slope 211. The diameter of the upper end face of the second annular guide slope 211 is larger than the diameter of the lower end face. The second annular guide slope 211 is the same as the first annular guide slope 107, and the diameter of the lower end face of the second annular guide slope 211 is larger than the outer diameter of the sampling cylinder body 101.

[0014] In this embodiment, after the UAV 104 returns to base carrying the first mounting post 103, the sampling cylinder body 101, and the counterweight body 102, the bottom end of the first mounting post 103 first contacts the upper end of the guide cylinder 203. If the first mounting post 103 is slightly tilted, the first annular guide ramp 107 on the first mounting post 103 will first contact the upper end face of the guide cylinder 203, and then correct towards the center under the guidance of the first annular guide ramp 107. During the downward movement, the first guide block 108 on the first mounting post 103 will cooperate with the first arched guide ramp 205. The first guide block 108 slides along the first arched guide ramp 205 to the first guide channel 210, further constraining the horizontal position of the sampling cylinder body 101 when it moves downward. If the first guide block 108 just enters the guide cylinder 203 and contacts the first guide ramp 206 on the first guide ramp 202, the first guide block 108 will be able to further constrain the horizontal position of the sampling cylinder body 101 when it moves downward. After the two arched guide ramps 207 come into contact, the third arched guide ramp 109 on the first guide block 108 contacts the second arched guide ramp 207 on the protrusion 206 and immediately enters the first arched guide ramp 205 under the action of gravity and slides to the first guide channel 210. After the first guide block 108 exits from the first guide channel 210, the first mounting post 103 continues to descend. The first annular guide ramp 107 on the first mounting post 103 will come into contact with the first V-shaped guide ramp 209 on the upper part of the support cylinder 204 and enter the first V-shaped guide ramp 209. After entering, the first annular guide ramp 107 on the first mounting post 103 fits against the second annular guide ramp 211 on the support cylinder 204, thereby placing the first mounting post 103 inside the support cylinder 204 to complete the final centering and support.

[0015] This invention, by setting the first arched guide slope 205 of the guide cylinder 203 and the first guide channel 210, and the first V-shaped guide slope 209 of the support cylinder 204, can effectively guide and correct the first mounting column 103 and the sampling cylinder body 101 deployed by the UAV 104, so that they can land accurately and reliably in the support cylinder 204. This solves the docking problem caused by the hovering accuracy and air shaking of the UAV 104, ensures that subsequent operations can be carried out smoothly, and improves the reliability and success rate of the system.

[0016] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 8 , Figure 12 , Figure 13 and Figure 14 The river water collection system also includes two first telescopic power sources 601, two semi-circular baffles 602, two second telescopic power sources 603, two first mounting blocks 604, two first rotational power sources 605, and two hexagonal screwdrivers 606. The first telescopic power source 601 and the second telescopic power source 603 are not limited here. Their function is to provide telescopic power, and they can be hydraulic cylinders, air cylinders, etc. The first rotary power source 605 is not limited here; its function is to provide rotary power, and it can be a stepper motor, servo motor, etc. Each of the two mounting brackets 208 has a first telescopic power source 601 fixedly connected to its opposite end face. The protruding ends of the two first telescopic power sources 601 are horizontally arranged and opposite to each other. Each protruding end of the first telescopic power source 601 has a semi-circular baffle 602 fixedly connected to it. The upper end face of the semi-circular baffle 602 is at the same height as the lower end face of the guide cylinder 203. The two semi-circular baffles 602 can open or close the lower opening of the guide cylinder 203 under the action of the first telescopic power source 601. The lower end face of the first mounting post 103 has a first circular groove 110, the central axis of which coincides with the center line of the first mounting post 103. A snap-fit ​​post 111 is fixedly mounted on the first mounting post 103, the central axis of which coincides with the central axis of the first mounting post 103. The diameter of the snap-fit ​​post 111 is smaller than the diameter of the first circular groove 110. The upper end face of the snap-fit ​​post 111 extends upward beyond the upper end face of the first mounting post 103, and the lower end face of the snap-fit ​​post 111 extends downward beyond the upper end face of the first circular groove 110. The lower end face of the snap-fit ​​post 111 has a second circular groove 112. The sidewall of the second circular groove 112 is connected to the first guide groove 113. The sliding guide direction of the first guide groove 113 is parallel to the center line direction of the first mounting post 103. The upper end face of the first guide groove 113 is at the same height as the upper end face of the second circular groove 112. The lower end face of the first guide groove 113 is at the same height as the lower end face of the second circular groove 112. The upper end face of the first guide groove 113 is higher than the upper end face of the first mounting post 103. Two opposing second V-shaped guide ramps 114 are provided on the lower inner side of the second circular groove 112. The end of the two V-shaped guide ramps near the first guide groove 113 is higher than the end away from the first guide groove 113. An installation rod 115 is fixedly installed inside the sampling cylinder body 101. The diameter of the installation rod 115 is the same as the diameter of the second circular groove 112. The central axis of the installation rod 115 coincides with the rotation axis of the sampling cylinder body 101. The upper end face of the installation rod 115 extends out of the upper end face of the sampling cylinder body 101. A first cylinder 116 is fixedly installed on the upper end face of the installation rod 115. The central axis of the first cylinder 116 coincides with the central axis of the installation rod 115. A second cylinder 117 is fixedly installed on the upper end face of the first cylinder 116. The central axis of the second cylinder 117 coincides with the central axis of the first cylinder 116. The diameter of the first cylinder 116 is smaller than the diameter of the second cylinder 117. The diameter of the second cylinder 117 is smaller than the diameter of the installation rod 115. The upper end face of the mounting rod 115 is provided with a guide post 118. A second guide block 119 is fixedly installed on the side wall of the guide post 118. A fourth arched guide slope 121 is opened on the upper end face of the second guide block 119. The second guide block 119 can slide in the first guide groove 113 along the sliding guide direction of the first guide groove 113. A first rotating groove 122 is opened on the lower end face of the guide post 118. The size of the first rotating groove 122 is the same as the size of the first cylinder 116. A second rotating groove 123 is opened on the upper end face of the first rotating groove 122. The second rotating groove 123 is vertically connected to the first rotating groove 122. The size of the second rotating groove 123 is the same as the size of the second cylinder 117. The first rotating groove 122 surrounds the first cylinder 116, and the second rotating groove 123 surrounds the second cylinder 117. The upper sidewall of the snap-fit ​​post 111 is provided with a first threaded hole 124 and a second threaded hole 125. The first threaded hole 124 and the second threaded hole 125 are located above the first mounting post 103. The central axis of the first threaded hole 124 and the second threaded hole 125 is parallel to the radial direction of the first mounting post 103 along the center position of the two first guide blocks 108. The upper sidewall of the guide post 118 is provided with a first through hole 126. The two ends of the first through hole 126 can be connected to the first threaded hole 124 and the second threaded hole 125 respectively. The first threaded hole 124, the first through hole 126 and the second threaded hole 125 can be threaded into the internal hexagonal screw 134 at the same time. Each mounting bracket 208 is horizontally mounted with a second telescopic power source 603. The extended ends of the two second telescopic power sources 603 are arranged opposite each other. A first mounting block 604 is fixedly mounted on the extended end of each second telescopic power source 603. A first arc-shaped guide slope 607 is opened on the lower part of the opposite end face of the two first mounting blocks 604. A fixed end of a first rotating power source 605 is fixedly mounted on each first mounting block 604. A hexagonal screwdriver 606 is fixedly mounted on the rotating end of the two first rotating power sources 605. The rotation axes of the two first rotating power sources 605 coincide. When the first mounting column 103 is placed in the support cylinder 204, the lower end face of the first mounting block 604 is at the same height as the upper end face of the first mounting column 103. The central axis of the first through hole 126 coincides with the rotation axis of the two first rotating power sources 605. The hexagonal screwdriver 606 can turn the internal hexagonal screw 134 out of the first through hole 126. The drone 104 is equipped with a camera 127.

[0017] In this embodiment, the drone 104 returns to base carrying the first mounting post 103, the sampling cylinder body 101, and the counterweight body 102. As soon as the first mounting post 103 is placed inside the support cylinder 204, the camera 127 identifies the end of the hexagonal screw 134. Two semi-circular baffles 602, extended by the two first telescopic power sources 601, close the lower opening of the guide cylinder 203. As the drone 104 continues to descend onto the sampling platform 202, the connecting rope 106 above the guide cylinder 203 is placed overlapping inside the guide cylinder 203, positioned on the upper surface of the semi-circular baffles 602. Then, the first clamping block 301 clamps the counterweight body 102. The two first mounting blocks 604, extended by the two second telescopic power sources 603, first press against the first... The upper end face of the mounting post 103 is then used to identify the second telescopic power source 603, which is directly opposite the head of the hexagonal screw 134 as identified by the camera 127. As it extends, the first rotary power source 605 on the first mounting block 604 on that side drives the installed hexagonal screw screwdriver 606 to rotate until it rotates into the head of the hexagonal screw 134. Then, the second telescopic power source 603 on that side retracts. The first rotary power source 605 on the first mounting block 604 on that side drives the installed hexagonal screw screwdriver 606 to rotate in the direction in which the hexagonal screw 134 is screwed out, until the hexagonal screw 134 just emerges from the first through hole 126. At this point, the first rotary power source 605 on the first mounting block 604 on that side stops rotating, and the second telescopic power source 603 on that side also stops retracting, awaiting subsequent operations.

[0018] Please see Figure 1 , Figure 3 , Figure 8 and Figure 9 A ring gear 128 is fixedly connected to the upper end face of the sampling cylinder body 101. The central axis of the ring gear 128 coincides with the central axis of the sampling cylinder body 101. The maximum outer diameter of the ring gear 128 is smaller than the outer diameter of the sampling cylinder body 101. The fixed end of the second rotary power source 129 is fixedly installed inside the first mounting post 103. The rotation axis of the second rotary power source 129 is parallel to the central axis of the first mounting post 103. The rotating end of the second rotary power source 129 is fixedly connected to the first gear 130. The first gear 130 is located inside the first mounting post 103, and part of the first gear 130 extends into the first circular groove 110. When the sampling cylinder body 101 is inserted into the first circular groove 110, the first gear 130 and the ring gear 128 are engaged. The second rotary power source 129 is not limited here; its function is to provide rotary power, and it can be a stepper motor, servo motor, etc. In this embodiment, the UAV 104 returns to base carrying the first mounting post 103, the sampling cylinder body 101, and the counterweight body 102. Before the first mounting post 103 is placed inside the support cylinder 204 and the first clamping block 301 clamps the counterweight body 102, the second rotary power source 129 rotates to drive the sampling cylinder body 101 to rotate. When the sampling port 105 rotates to the end facing the water sample collection unit, the second rotary power source 129 stops rotating and waits for subsequent operations.

[0019] Please see Figure 1 , Figure 13 , Figure 14 and Figure 15 The sampling cylinder separation unit also includes a third telescopic power source 303 and a fourth telescopic power source 304; The third telescopic power source 303 and the fourth telescopic power source 304 are not limited here. Their function is to provide telescopic power, and they can be hydraulic cylinders, air cylinders, etc. There are two first clamping blocks 301, which are arranged opposite each other on both sides of the central axis of the support cylinder 204. The protruding ends of the third telescopic power source 303 are fixedly installed on the opposite end faces of the two first clamping blocks 301. The two third telescopic power sources 303 are arranged horizontally, and the protruding ends of the two third telescopic power sources 303 are arranged opposite each other. The fixed end of the third telescopic power source 303 is arranged on the sliding block 302. The first clamping block 301 can clamp the side wall of the counterweight body 102 under the action of the third telescopic power source 303. The extended end of the fourth telescopic power source 304 is fixedly installed on the sliding block 302. The telescopic direction of the fourth telescopic power source 304 is vertically set. The fixed end of the fourth telescopic power source 304 is fixedly installed on the mobile platform 201. The sliding block 302 is located directly below the support cylinder 204. Both mounting brackets 208 have grooves 212 on their opposite end faces. The grooves 212 are located below the support cylinder 204. The sliding guide direction of the grooves 212 is parallel to the central axis of the support cylinder 204. The sliding block 302 is slidably disposed in the grooves 212. Under the action of the fourth telescopic power source 304, the sliding block 302 slides up and down along the sliding guide direction of the grooves 212.

[0020] In this embodiment, the drone 104 returns to base carrying the first mounting post 103, the sampling cylinder body 101, and the counterweight body 102. As soon as the first mounting post 103 is placed inside the support cylinder 204, the camera 127 identifies the end of the hexagonal screw 134. The two semi-circular baffles 602, extended by the two first telescopic power sources 601, close the lower opening of the guide cylinder 203. As the drone 104 continues to descend onto the sampling platform 202, the connecting rope above the guide cylinder 203... The sampling cylinder 106 will be placed vertically inside the guide cylinder 203, positioned on the upper surface of the semi-circular baffle 602. Simultaneously, the second rotary power source 129 rotates, causing the sampling cylinder body 101 to rotate. When the sampling port 105 rotates to the end directly opposite the water sample collection unit, the second rotary power source 129 stops rotating. Then, the sliding block 302 moves upward under the extension of the fourth telescopic power source 304. The two first clamping blocks 301, under the action of the third telescopic power source 303, respectively clamp the counterweight body 102. A mounting block 604, with the extension of two second telescopic power sources 603, first presses against the upper surface of the first mounting post 103. Then, based on the camera 127's recognition that the head of the hexagonal screw 134 is directly opposite the second telescopic power source 603, it continues to extend. During extension, the first rotational power source 605 on the first mounting block 604 on that side drives the hexagonal screw screwdriver 606 to rotate until it rotates into the head of the hexagonal screw 134. Then, the second telescopic power source 603 on that side retracts, and the first mounting block on that side... The first rotary power source 605 on 604 drives the installed hexagonal screw screw 606 to rotate in the direction of the hexagonal screw 134 until the hexagonal screw 134 just emerges from the first through hole 126. At this point, the first rotary power source 605 on the first mounting block 604 on this side stops rotating, and the second telescopic power source 603 on this side also stops retracting. Then, the sliding block 302 separates the sampling cylinder body 101 from the first mounting post 103 under the retraction of the fourth telescopic power source 304, awaiting subsequent operations.

[0021] The present invention utilizes the vertical movement of the sliding block 302 to achieve the separation action of the sampling cylinder body 101. The power is direct, the separation process is stable, and it is easy to connect with the subsequent rotation and water pouring process to achieve a smooth automated process.

[0022] Please see Figure 1 , Figure 2 , Figure 7 , Figure 15 and Figure 16 The water sample collection unit also includes a third rotary power source 403, a second gear 404, a third gear 405, a rotating column 406, a third rotating groove 407, a first mounting platform 408, an L-shaped connecting column 409, a funnel 410, a turntable 411, a fourth rotary power source 412, a placement hole 413, a second guide groove 414, a fifth telescopic power source 415, and a push block 416. The third rotary power source 403 and the fourth rotary power source 412 are not limited here. Their function is to provide rotary power, and they can be stepper motors, servo motors, etc. The fifth telescopic power source 415 is not limited here; its function is to provide telescopic power, and it can be a hydraulic cylinder, a pneumatic cylinder, etc. The third rotary power source 403 is fixedly mounted on the sliding block 302. The third rotary power source 403 is horizontally positioned, and its rotation axis is parallel to the width direction of the sampling platform 202. The rotating end of the third rotary power source 403 passes through the sliding block 302 and is fixedly mounted with a second gear 404. Rotating columns 406 are fixedly mounted at both ends of the rotating block 401 along the width direction of the sampling platform 202. The sliding block 302 has third rotating grooves 407 on both sides along the width direction of the sampling platform 202. The rotating column 406 on the side closer to the second gear 404 passes through the third rotating groove 407 on the side closer to the second gear 404 and is fixedly mounted. The device is equipped with a third gear 405, which meshes with the second gear 404. A rotating column 406, located away from the second gear 404, is rotatably disposed in a third rotating groove 407 on the side away from the second gear 404. A placement groove 420 is provided on the rotating block 401. When the rotating block 401 rotates to a horizontal position under the action of the third rotating power source 403, the placement groove 420 is located on the upper end face of the rotating block 401, and the central axis of the placement groove 420 coincides with the central axis of the support cylinder 204. Two first clamping blocks 301 are located on opposite sides of the placement groove 420. The fixed ends of the two third telescopic power sources 303 are fixedly installed on the rotating block 401. The first mounting platform 408 is fixedly mounted on the mobile platform 201. The fixed end of the fourth rotary power source 412 is fixedly mounted on the lower end face of the first mounting platform 408. The rotation axis of the fourth rotary power source 412 is vertically set. The rotating end of the fourth rotary power source 412 passes through the upper and lower end faces of the first mounting platform 408 and is fixedly mounted on a turntable 411. The upper end face of the turntable 411 has a plurality of placement holes 413 arranged in a circular array along the circumferential direction of the central axis of the turntable 411. Each placement hole 413 has a second guide groove 414 on its side wall. Each collection bottle 402 has a third guide block 417 on its side wall. When the collection bottle 402 is placed in the placement hole 413, the third guide block 417 is located in the second guide groove 414. The upper opening of the collection bottle 402 is rotatably opened and closed and is fitted with a bottle stopper 418. One end of the L-shaped connecting column 409 is fixedly installed on one of the mounting brackets 208, and the other end of the L-shaped connecting column 409 is fixedly installed on the outer wall of the funnel 410. The upper opening of the funnel 410 is larger than the lower opening, and the lower opening of the funnel 410 is smaller than the upper opening of the collection bottle 402. When one of the collection bottles 402 is rotated to the lower opening of the funnel 410 under the action of the fourth rotating power source 412, the rotating block 401 of the sampling cylinder body 101 is rotated to the vertical position under the action of the third rotating power source 403 after the first clamping block 301 clamps and samples. When the sampling cylinder body 101 is vertical, the hollow cross section inside is in the shape of an inverted isosceles trapezoid. The water in the sampling cylinder body 101 is poured into the funnel 410 through the sampling port 105. The push block 416 is fixedly installed at the extended end of the fifth telescopic power source 415. The fifth telescopic power source 415 is horizontally arranged, and the fixed end of the fifth telescopic power source 415 is fixedly installed on the L-shaped connecting column 409. The lower part of the push block 416 away from the fifth telescopic power source 415 is provided with a second arc-shaped guide slope 419. When one of the collection bottles 402 rotates to directly below the lower opening of the funnel 410 under the action of the fourth rotating power source 412, the rotation axis of the bottle stopper 418 on the adjacent other collection bottle 402 is perpendicular to the telescopic axis of the fifth telescopic power source 415. Under the action of the fifth telescopic power source 415, the push block 416 can push the bottle stopper 418 on the adjacent other collection bottle 402 from the upper opening of the open collection bottle 402 to the upper opening of the closed collection bottle 402.

[0023] In this embodiment, after the sliding block 302 separates the sampling cylinder body 101 from the first mounting column 103 and descends to the designated position under the retraction of the fourth telescopic power source 304, the fourth rotary power source 412 rotates clockwise so that one of the collection bottles 402 is directly below the funnel 410. Then, the third rotary power source 403 rotates 90 degrees, causing the second gear 404 to drive the third gear 405 to rotate 90 degrees, thereby causing the rotating block 401 to rotate from horizontal to vertical. That is, the river water collected in the sampling cylinder body 101 is poured into the funnel 410 through the sampling port 105, and then flows out from the funnel 410. The water enters the collection bottle 402, and then the third rotary power source 403 rotates 90 degrees in the opposite direction, causing the rotating block 401 to rotate from vertical to horizontal. At the same time, the fourth rotary power source 412 rotates clockwise until the rotation axis of the bottle stopper 418 on the collection bottle 402 is perpendicular to the extension axis of the fifth telescopic power source 415, and then stops. That is, at this time, the other adjacent collection bottle 402 is located directly below the funnel 410. Then, the fifth telescopic power source 415 extends and pushes the bottle cap on the collection bottle 402 that has collected river water from open to closed through the push block 416.

[0024] The rotating block 401 of this invention achieves precise rotation through the relative transmission of the second gear 404 and the third gear 405. The sampling cylinder body 101 has high stability when inverting the sample, avoiding water sample spillage. Combined with the guiding effect of the funnel 410, it ensures that the water sample flows completely into the collection bottle 402. The turntable 411 has multiple collection bottles 402 arranged in a circumferential array. With the automatic switching of the fourth rotating power source 412, multiple water samples can be continuously collected, improving work efficiency and making it suitable for batch sampling scenarios. The fifth telescopic power source 415 drives the push block 416 to automatically close the bottle stopper 418, avoiding the risk of contamination caused by manual sealing, while ensuring the sealing effect and extending the water sample preservation time. The cooperation between the second guide groove 414 and the third guide block 417 ensures the positioning accuracy of the collection bottle 402 on the turntable 411, avoiding deviations that cause water sample introduction deviations and deviations when the bottle stopper 418 is closed. The structure is ingeniously designed.

[0025] Please see Figure 1 , Figure 3 , Figure 15 , Figure 17 and Figure 18 The sampling tube cleaning unit also includes a sixth telescopic power source 504, a seventh telescopic power source 505, a second mounting platform 506, a fifth rotary power source 507 and a rotating drum 508, and the counterweight separation assembly includes a second clamping block 509, an eighth telescopic power source 510, a connecting block 511, a second mounting column 512 and a sixth rotary power source 513. The sixth telescopic power source 504, the seventh telescopic power source 505, and the eighth telescopic power source 510 are not limited here. Their function is to provide telescopic power, and they can be hydraulic cylinders, air cylinders, etc. The fifth rotary power source 507 and the sixth rotary power source 513 are not limited here. Their function is to provide rotary power, and they can be stepper motors, servo motors, etc. The fixed end of the gripper 501 is fixedly installed on the extended end of the sixth telescopic power source 504. The sixth telescopic power source 504 is horizontally arranged. The telescopic axis of the sixth telescopic power source 504 intersects with the central axis of the placement groove 420, and the telescopic axis of the sixth telescopic power source 504 is perpendicular to the central axis of the placement groove 420. The fixed end of the sixth telescopic power source 504 is fixedly installed on the extended end of the seventh telescopic power source 505. The extension direction of the seventh telescopic power source 505 is vertically downward. The fixed end of the seventh telescopic power source 505 is fixedly installed on the lower end face of the sampling placement table 202. The second mounting platform 506 is fixedly mounted on the mobile platform 201. The fixed end of the fifth rotary power source 507 is fixedly mounted on the lower end face of the second mounting platform 506. The rotation axis of the fifth rotary power source 507 is vertically set. The rotating end of the fifth rotary power source 507 passes through the upper and lower end faces of the second mounting platform 506 and is fixedly mounted with a rotating drum 508. The lower end of the sampling cylinder body 101 is provided with a rotating thread 131, and the upper end of the counterweight body 102 is fixedly connected with a threaded post 132. The rotating thread 131 on the sampling cylinder body 101 is threadedly connected to the threaded post 132 on the counterweight body 102. A sealing ring 133 is also fixedly installed on the upper end face of the counterweight body 102. When the rotating thread 131 on the sampling cylinder body 101 is threadedly connected to the threaded post 132 on the counterweight body 102, the sealing ring 133 seals the space between the upper end face of the counterweight body 102 and the lower end face of the sampling cylinder body 101. The second mounting post 512 is fixedly mounted on the upper end face of the rotating drum 508. The sixth rotary power source 513 is fixedly mounted on the second mounting post 512. The rotating end of the sixth rotary power source 513 is vertically upward. The connecting block 511 is fixedly mounted on the rotating end of the sixth rotary power source 513. An eighth telescopic power source 510 is fixedly mounted on both ends of the connecting block 511. The protruding ends of the two eighth telescopic power sources 510 are arranged opposite to each other, and a second clamping block is fixedly mounted on the protruding end of each eighth telescopic power source 510. 509. When the gripper 501 moves the sampling cylinder body 101 above the rotating cylinder 508 under the action of the sixth telescopic power source 504, the second mounting post 512 rotates to directly below the sampling cylinder body 101 under the action of the sixth rotary power source 513. The second clamping block 509 can clamp the side wall of the counterweight body 102 under the action of the eighth telescopic power source 510. The second clamping block 509 clamping the side wall of the counterweight body 102 can separate the counterweight body 102 from the sampling cylinder body 101 under the action of the sixth rotary power source 513.

[0026] In this embodiment, when the rotating block 401 rotates from vertical to horizontal, the sixth telescopic power source 504 extends, and the gripper 501 opens. After the gripper 501 extends into the outer wall of the sampling cylinder body 101, it closes, gripping the side wall of the column sampling cylinder body 101. At this time, the two first gripping blocks 301 simultaneously cease to grip the side wall of the counterweight body 102 under the retraction of the two third telescopic power sources 303. Then, the fifth telescopic power source 415 retracts, causing the rotating block 401 to move downward, so that the counterweight body 102 moves out of the placement slot 420. The sixth telescopic power source 504 retracts to the designated position, and the seventh telescopic power source 505 retracts, allowing sampling to proceed. The cylinder body 101 and the counterweight body 102 move upward together. Then, the fifth telescopic power source 415 rotates counterclockwise until the second mounting post 512 is directly below the sampling cylinder body 101 and stops. After that, the seventh telescopic power source 505 extends to the designated position, and the two second clamping blocks 509 simultaneously clamp the counterweight body 102 under the extension of the two eighth telescopic power sources 510. Then, the sixth rotary power source 513 rotates along the screwing direction of the threaded post 132. When rotating, the seventh telescopic power source 505 slowly retracts, causing the threaded post 132 of the counterweight body 102 to unscrew the rotating thread 131 on the sampling cylinder body 101, thereby realizing the separation operation of the counterweight body 102 and the sampling cylinder body 101.

[0027] Please see Figure 1 , Figure 3 and Figure 17The sampling tube cleaning unit also includes a first water pump 514, a first water outlet hard pipe 515, an annular horizontal baffle 516, an annular vertical baffle 517, a first connecting pipe 518, an annular water tank 519, a second connecting pipe 520, a first water tank 521, a second water tank 522, a second water pump 523, a second water outlet hard pipe 524, and a nozzle body 525; The rotating drum 508 is hollow inside. The first water pump 514 is fixedly installed inside the rotating drum 508. The water inlet of the first water pump 514 is connected to the inside of the rotating drum 508. The water outlet of the first water pump 514 is connected to the first water outlet hard pipe 515. The first water outlet hard pipe 515 passes through the rotating drum 508 upward and is connected to the water nozzle 502. The annular transverse baffle 516 is fixedly installed on the upper side wall of the rotating cylinder 508. The upper end face of the annular transverse baffle 516 is at the same height as the upper end face of the rotating cylinder 508. The annular vertical baffle 517 is fixedly installed on the outer side wall of the annular transverse baffle 516. The upper end face of the annular vertical baffle 517 is higher than the upper end face of the annular transverse baffle 516. The first connecting pipe 518 is fixedly installed on the annular transverse baffle 516 and passes through the upper and lower end faces of the annular transverse baffle 516. The upper end face of the first connecting pipe 518 is at the same height as the upper end face of the annular transverse baffle 516. The annular water tank 519 is fixedly installed. On the second mounting platform 506, the inlet end of the annular water tank 519 is connected to the outlet end of the first connecting pipe 518. The lower end face of the first connecting pipe 518 is lower than the upper end face of the annular water tank 519. The second connecting pipe 520 is fixedly installed on the annular water tank 519 and passes through the upper and lower end faces of the lower part of the annular water tank 519. The upper end face of the second connecting pipe 520 is at the same height as the upper end face of the lower part of the annular water tank 519. The lower end face of the second connecting pipe 520 passes through the upper and lower end faces of the second mounting platform 506 and is connected to the inlet end of the first water tank 521. The first water tank 521 is placed on the mobile platform 201. The second water tank 522 is fixedly installed on the second mounting platform 506, and the second water pump 523 is fixedly installed inside the second water tank 522. The inlet end of the second water pump 523 is connected to the inside of the second water tank 522, and the outlet end of the second water pump 523 is connected to the second outlet hard pipe 524. The second outlet hard pipe 524 passes through the second water tank 522 upward and is connected to the nozzle body 525. The nozzle body 525 can clean the upper end face of the threaded post 132 on the counterweight body 102 after it is separated from the sampling cylinder body 101. The upper surfaces of both the rotating drum 508 and the second water tank 522 are connected to water inlets.

[0028] In this embodiment, the rotating drum 508 and the second water tank 522 are filled with water through the water inlet. After the counterweight body 102 separates from the sampling cylinder body 101, the sampling cylinder body 101 is fixed above the rotating drum 508 under the clamping of the gripper 501. Then, the fifth telescopic power source 415 rotates counterclockwise by 120 degrees, causing the water nozzle 502 to rotate to directly below the sampling cylinder body 101. At this time, the counterweight body 102 held by the second clamping block 509 rotates to a position diagonally below the nozzle body 525. Then, the sampling cylinder body 101 moves downward under the extension of the seventh telescopic power source 505, causing the water nozzle 502 to enter the upper part of the hollow interior of the sampling cylinder body 101. Then, the first water... Pump 514 is turned on, and water nozzle 502 sprays water. At the same time, the sampling cylinder body 101 moves slowly upward under the retraction of the seventh telescopic power source 505, so that the water nozzle 502 sprays water to clean the hollow inner wall and upper wall of the sampling cylinder. While the sampling cylinder is being cleaned, the second water pump 523 is turned on, and the nozzle body 525 is turned on to clean the upper end face of the threaded column 132. During the cleaning, the counterweight body 102 rotates under the rotation of the sixth rotary power source 513, so that the upper end face of the threaded column 132 rotates for cleaning. The cleaning wastewater passes through the upper end face of the turntable 411, the first connecting pipe 518, the annular water tank 519 and the second connecting pipe 520 in sequence before entering the first water tank 521 for collection.

[0029] This invention separates and cleans the sampling cylinder body 101 and the counterweight body 102 separately and in a targeted manner, so that the river water residue inside the sampling cylinder body 101 and the water residue on the counterweight body 102 are washed away by water, thereby ensuring that there is no river water residue in the sampling cylinder body 101 and the counterweight body 102 after river water collection, ensuring the accuracy of the next sampling.

[0030] Please see Figure 1 , Figure 3 , Figure 17 and Figure 18 The sampling tube cleaning unit also includes an air pump 527, a mounting box 528, and an air outlet hard pipe 529; The air pump 527 and the mounting box 528 are both fixedly mounted on the rotating drum 508. The air pump 527 is located inside the mounting box 528. The air inlet of the air pump 527 is located inside the mounting box 528. The air outlet of the air pump 527 is connected to one end of the air outlet hard pipe 529. The other end of the air outlet hard pipe 529 passes through the side wall of the mounting box 528 and is connected to the air blowing nozzle 503. The upper part of the side wall of the mounting box 528 has a first opening 530. When the nozzle body 525 cleans the upper end face of the threaded post 132 on the counterweight body 102 after it is separated from the sampling cylinder body 101, the first opening 530 is opposite to the spraying direction of the nozzle body 525.

[0031] In this embodiment, after the sampling cylinder body 101 and the counterweight body 102 are rinsed with water, the first water pump 514 and the second water pump 523 are turned off. Under the action of the seventh telescopic power source 505, the sampling cylinder body 101 moves to above the water nozzle 502. Then, the fifth telescopic power source 415 rotates counterclockwise by 120 degrees, causing the air nozzle 503 to rotate to directly below the sampling cylinder body 101. Then, under the extension of the seventh telescopic power source 505, the sampling cylinder body 101 moves downward, allowing the air nozzle 503 to enter the sampling cylinder body. The upper part of the hollow interior of 101 is then opened by the air pump 527, and the air blowing nozzle 503 blows air. At the same time, the sampling cylinder body 101 moves slowly upward under the retraction of the seventh telescopic power source 505, so that the air blowing nozzle 503 blows air onto the hollow inner wall and upper side wall of the sampling cylinder. While the inside of the sampling cylinder is being dried, the counterweight body 102 rotates under the rotation of the sixth rotary power source 513, so that the water remaining on the upper end face of the threaded column 132 after cleaning is rotated out of the upper end face of the threaded column 132 by centrifugal force, so that the water on the upper end face of the threaded column 132 is dried.

[0032] When drying the inside of the sampling cylinder body 101, the present invention can quickly remove residual moisture from the inner wall of the sampling cylinder through the air nozzle 503, avoiding the growth of bacteria or algae from water stains, thereby preventing cross-contamination for the next sampling. The dried sampling cylinder is also easier to store and reuse. In addition, the first opening 530 on the mounting box 528 is cleverly designed to solve the protection problem of the air pump 527, that is, to prevent the air pump 527 from sucking in water thrown out by the threaded column 132, thereby improving the reliability and service life of the air pump 527 in humid working environments.

[0033] Please see Figure 1 , Figure 3 , Figure 17 and Figure 18 The maximum outer diameter of the water nozzle 502 and the air nozzle 503 is smaller than the inner diameter of the sampling cylinder body 101. The water nozzle 502, the air nozzle 503 and the second mounting post 512 are arranged in an array along the circumferential direction of the rotating cylinder 508. When the counterweight body 102, after being separated from the sampling cylinder body 101, rotates to the nozzle body 525 to clean the upper end face of the threaded post 132 on the counterweight body 102, the water nozzle 502 rotates to the position directly below the sampling cylinder body 101 under the action of the fifth rotating power source 507.

[0034] In this embodiment, after the sampling cylinder body 101 is dried and the counterweight body 102 is spun dry, the air pump 527 and the sixth rotary power source 513 are turned off. The sampling cylinder body 101 moves above the air nozzle 503 under the action of the seventh telescopic power source 505. Then, the fifth telescopic power source 415 rotates counterclockwise by 120 degrees, causing the counterweight body to rotate to directly below the sampling cylinder body 101. After that, the sixth telescopic power source 504 rotates in the direction of screwing the threaded post 132 into the rotating thread 131. At the same time, the sampling cylinder body 101 slowly moves downward under the extension of the seventh telescopic power source 505 until the threaded post 132 is fully screwed into the rotating thread 131. Then, the sixth telescopic power source 504 stops rotating and the seventh telescopic power source 505 stops rotating. The two second clamping blocks 509 move downwards, and then, under the retraction of the two eighth telescopic power sources 510, they no longer clamp the side wall of the counterweight body 102. Then, under the retraction of the seventh telescopic power source 505, the sampling cylinder body 101 and the counterweight body 102 move above the second clamping blocks 509. Then, the sixth telescopic power source 504 extends, causing the sampling cylinder body 101 and the counterweight body 102 to extend directly above the placement slot 420. The fifth telescopic power source 415 extends, driving the rotating block 401 upwards, causing the counterweight body 102 to enter the placement slot 420. Then, the two first clamping blocks 301 simultaneously clamp the side wall of the counterweight body 102 under the extension of the two third telescopic power sources 303. Afterwards, the clamp 501 opens. The sixth telescopic power source 504 retracts, moving the gripper 501 out of direct contact with the rotating block 401. Then, the sixth telescopic power source 504 extends upward, causing the fourth arched guide ramp 121 on the second guide block 119 to first enter the second V-shaped guide ramp 114 for guidance before moving along the first guide groove 113. During this movement, if the ring gear 128 is not blocked by the lower end face of the first gear 130 before meshing with it, it can be inserted directly. If the ring gear 128 is blocked by the lower end face of the first gear 130 before meshing with it, the second rotary power source 129 slowly rotates at a certain angle until the ring gear 128 can be inserted to mesh with the first gear 130, that is, inserted into the guide post 1. After the two ends of the first through hole 126 on 18 are connected to the first threaded hole 124 and the second threaded hole 125 respectively, the second telescopic power source 603 facing the head of the internal hexagonal screw 134 extends out. When it extends, the first rotational power source 605 on the first mounting block 604 on that side drives the installed hexagonal screw screw 606 to rotate until the internal hexagonal screw 134 is rotated to completely pass through the first threaded hole 124, the first through hole 126 and the second threaded hole 125, and the sampling cylinder is rotatably fixed on the mounting post. Then, the two first mounting blocks 604 move out of the first mounting post 103 directly above it under the retraction of the corresponding second telescopic power source 603. After the drone 104 takes off vertically and the connecting rope 106 inside the guide tube 203 is straightened,The two semi-circular baffles 602 move out of direct contact with the guide cylinder 203 as the two first telescopic power sources 601 retract. Then, the two first clamping blocks 301 simultaneously cease clamping the sidewalls of the counterweight body 102 as the two third telescopic power sources 303 retract. The drone 104 continues to fly vertically upwards, carrying the sampling cylinder body 101, the counterweight body 102, and the first mounting column 103 out of the upper part of the sampling platform 202, before flying over the next target water area to collect river water samples.

[0035] The present invention allows for immediate assembly of the sampling cylinder body 101 and the counterweight body 102 after rinsing and drying, so that the next water sample can be collected. The water sample collected next time will not be affected by the water sample remaining after the previous collection. The sampling cylinder body 101 and the counterweight body 102 can be quickly reused for river water sample collection. The structure is compact, makes full use of the space on the mobile platform 201, and has a high degree of automation.

[0036] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 13 and Figure 14 The upper end face of the first mounting post 103 has a plurality of propellers 701 arranged in a circular array along the circumferential direction of the center line of the first mounting post 103. The rotation axis of the plurality of propellers 701 is parallel to the rotation axis of the sampling cylinder body 101. When the propellers 701 rotate, they generate a downward axial thrust on the first mounting post 103. The river water collection system also includes a water pressure monitoring unit, which includes an L-shaped oil pipe 702, a pressure-bearing piston 703, and a driven piston 704. The lower part of the L-shaped oil pipe 702 is connected to and fixed on the outer wall of the sampling cylinder body 101. The connection between the L-shaped oil pipe 702 and the outer wall of the sampling cylinder body 101 is located directly below the sampling port 105. The upper part of the L-shaped oil pipe 702 penetrates the interior of the sampling cylinder body 101 and is connected to the pressure detection end of the first mounting column 103. The pressure-bearing piston 703 and the driven piston 704 are slidably disposed at both ends of the L-shaped oil pipe 702. The pressure-bearing piston 703 is used to withstand the water pressure on the side wall of the sampling cylinder body 101. The driven piston 704 monitors the pressure of the driven piston 704 under the action of the water pressure on the pressure-bearing piston 703 through the pressure detection end. The river water collection system also includes a closing ring 705, which is slidably mounted on the first mounting post 103. The sliding direction of the closing ring 705 is parallel to the rotation axis of the sampling cylinder body 101. The closing ring 705 is sleeved on the sampling cylinder body 101. The inner diameter of the closing ring 705 is the same as the outer diameter of the sampling cylinder body 101. The closing ring 705 can close or open the sampling port 105. A first rubber ring 706 is fixedly installed on the side wall of the first circular groove 110. When the sampling cylinder body 101 is inserted into the first circular groove 110, the first rubber ring 706 closes the space between the outer side wall of the sampling cylinder body 101 and the side wall of the first circular groove 110. The river water collection system also includes two ninth telescopic power sources 707; The ninth telescopic power source 707 is not limited here; its function is to provide telescopic power, and it can be a hydraulic cylinder, a pneumatic cylinder, etc. The fixed ends of the two ninth telescopic power sources 707 are installed in the first mounting post 103. The two ninth telescopic power sources 707 are respectively located on both sides of the first circular groove 110. The protruding end of each ninth telescopic power source 707 is vertically downward. Each ninth telescopic power source 707 is fixedly connected to the outer wall of the closing ring 705. The upper and lower parts of the inner wall of the sealing ring 705 are fixedly installed with second rubber rings 708. The distance between the two second rubber rings 708 is the same as the diameter of the sampling port 105. The second rubber rings 708 can seal the space between the outer wall of the sampling cylinder body 101 and the inner wall of the sealing ring 705. The river water collection system also includes a U-shaped plate 709, a wedge-shaped groove 710, a wedge-shaped annular groove 711, a wedge-shaped semi-annular slider 712, a second mounting block 713, a tenth telescopic power source 714, a third mounting block 715, a limiting post 716, a first arc-shaped plate 717, a second arc-shaped plate 718, an arc-shaped stop block 719, a first spring 720, a wedge-shaped block 737, a connecting rod 721, a connecting plate 722, and several dredging posts 723; The tenth telescopic power source 714 is not limited here. Its function is to provide telescopic power, and it can be a hydraulic cylinder, a pneumatic cylinder, etc. The U-shaped plate 709 is fixedly installed inside the sampling cylinder body 101. The U-shaped plate 709 divides the interior of the sampling cylinder body 101 into an installation groove and a sampling groove. The installation groove passes through the upper end face of the sampling cylinder body 101 and communicates with the outside of the sampling cylinder body 101. The sampling groove is connected to the sampling port 105. The lower end face of the mounting rod 115 is fixedly connected to the upper end face of the bottom of the U-shaped plate 709. A wedge-shaped groove 710 is laterally opened on the upper end face of the bottom of the U-shaped plate 709. The sliding guide direction of the wedge-shaped groove 710 is parallel to the direction of the central axis of the sampling port 105. One end of a plurality of first springs 720 is mounted on the side wall array of the mounting rod 115. The other end of the plurality of first springs 720 is mounted on the first arc plate 717. The central axis of the first arc plate 717 along its arc length direction coincides with the central axis of the mounting rod 115. One end of the first arc plate 717 along its arc length direction is fixedly mounted on the arc-shaped stop 719. One end of the second arc plate 718 along its arc length direction is also fixedly mounted on the arc-shaped stop 719. The central axis of the second arc plate 718 along its arc length direction coincides with the central axis of the first arc plate 717. A second guide channel 724 is formed between the second arc plate 718 and the first arc plate 717. The upper end face of the arc-shaped stop 719 is provided with a first guide slope 725, and the side of the first guide slope 725 near the first arc plate 717 and the second arc plate 718 is higher than the side away from the first arc plate 717 and the second arc plate 718. One end of a connecting rod 721 is fixedly installed on the side wall of the second arc-shaped plate 718 away from the first arc-shaped plate 717. The connecting rod 721 is horizontally arranged, and the length direction of the connecting rod 721 is parallel to the sliding guide direction of the wedge groove 710. The other end of the connecting rod 721 passes through the side wall of one side of the U-shaped plate 709 and is fixedly connected to the connecting plate 722. The penetration point of the connecting rod 721 and the U-shaped plate 709 is sealed by a third rubber ring. Several unblocking columns 723 are fixedly installed on the side wall of the connecting plate 722 near the sampling port 105. A filter plate 726 is installed in the sampling port 105. Several filter ports 727 are opened on the filter plate 726. Several filter ports 727 correspond one-to-one with several unblocking columns 723, and each filter port 727 is the same size as each unblocking column 723. The wedge block 737 is fixedly installed on the lower end face of the second arc plate 718 and the first arc plate 717, and the wedge block 737 is slidably installed in the wedge groove 710; A semi-circular sphere 728 is fixedly connected to the lower end face of the limiting post 716. The upper end face of the limiting post 716 is fixedly mounted on the second mounting block 713. The extended end of the tenth telescopic power source 714 is fixedly mounted on the second mounting block 713. The tenth telescopic power source 714 is horizontally positioned, and its telescopic axis intersects with the central axis of the first circular groove 110. The fixed end of the tenth telescopic power source 714 is fixedly mounted on the third mounting block 715. The third mounting block 715 is fixedly mounted on the lower end face of one end of the wedge-shaped semi-circular slider 712. The sampling cylinder body 101 is slidably disposed in the wedge-shaped annular groove 711, which is formed on the upper end face of the first circular groove 110. The central axis of the wedge-shaped annular groove 711 coincides with the center line of the mounting column. After the sampling cylinder body 101 is inserted into the first mounting plate, the lower part of the limiting column 716 is lower than the lower end face of the second arc-shaped plate 718. The limiting column 716 can extend into the second guide channel 724. When the limiting column 716 is in contact with the first arc-shaped plate 717, the arc-shaped stop 719 and the second arc-shaped plate 718, the extension direction of the tenth telescopic power source 714 is parallel to the sliding guide direction of the wedge-shaped groove 710. The river water collection system also includes a fourth mounting block 729 and a pressure sensor 730; A first blocking ring 731 is fixedly installed inside one end of the L-shaped oil pipe 702. The first blocking ring 731 can fit against the side wall of the pressure-bearing piston 703. A first connecting post 732 is fixedly installed on the side wall of the pressure-bearing piston 703 near the first blocking ring 731. The diameter of the first connecting post 732 is the same as the inner diameter of the first blocking ring 731. The end of the first connecting post 732 away from the pressure-bearing piston 703 extends out from the first blocking ring 731 and is flush with the end of the first blocking ring 731 away from the pressure-bearing piston 703. The other end of the L-shaped oil pipe 702... A second blocking ring 733 is fixedly installed inside. The lower end face of the second blocking ring 733 has a plurality of upper ends of second springs 734 arranged in a circular array along the circumferential direction of the central axis of the second blocking ring 733. The lower ends of the plurality of second springs 734 can contact the upper end face of the driven piston 704. A second connecting post 735 is fixedly installed on the upper end face of the driven piston 704. The diameter of the second connecting post 735 is the same as the inner diameter of the second blocking ring 733. The upper end face of the second connecting post 735 extends out of the second blocking ring 733 and is at the same height as the upper end face of the second blocking ring 733. The detection end of the pressure sensor 730 is vertically downward. After the sampling cylinder body 101 is inserted into the first mounting post 103, the detection end of the pressure sensor 730 is at the same height as the upper end face of the L-shaped oil pipe 702. The upper part of the L-shaped oil pipe 702 passes through the lower end face of the U-shaped plate 709 and extends out of the upper end face of the sampling cylinder body 101. The fixed end of the pressure sensor 730 is fixedly installed on the fourth mounting block 729. The fourth mounting block 729 is fixedly installed on the wedge-shaped semi-ring slider 712 and is located on the lower end face of the opposite end of the third mounting block 715 on the wedge-shaped semi-ring slider 712. The detection end of the pressure sensor 730 is higher than the upper end face of the first arc plate 717, the arc stop 719 and the second arc plate 718. The upper part of the L-shaped oil pipe 702 and the wedge block 737 are arranged on opposite sides of the mounting rod 115 with the central axis of the mounting rod 115. The river water collection system also includes several seventh rotating power sources 736; The seventh rotary power source 736 is not limited here. Its function is to provide rotary power while being waterproof. It can be a waterproof stepper motor, a waterproof servo motor, etc. The number of the seventh rotary power sources 736 corresponds one-to-one with the number of propellers 701. The fixed end of each seventh rotary power source 736 is fixedly installed in the first mounting post 103. The fixed end of each propeller 701 is fixedly connected to the rotating end of the seventh rotary power source 736. The rotation axis of each seventh rotary power source 736 coincides with the rotation axis of the corresponding connected propeller 701. The distance between the upper end face of the support cylinder 204 and the lower end face of the guide cylinder 203 is greater than the distance between the top of the propeller 701 and the upper end face of the first mounting post 103, so that the semi-circular baffle 602 is located above the propeller 701 when it closes the lower end opening of the guide cylinder 203.

[0037] In this embodiment, when river water sampling is performed, the sampling cylinder body 101, the first mounting column 103, and the counterweight body 102 fly to the designated target area of ​​the river under the action of an unmanned aerial vehicle. The second rotary power source 129 rotates, causing the sampling cylinder body 101 to rotate 360 ​​degrees clockwise along its central axis. This causes the limiting column 716 to be engaged with the first arc plate 717, the arc stop 719, and the second arc plate 718. At this time, the detection end of the pressure sensor 730 is also in contact with the upper surface of the second connecting column 735. Then, the tenth telescopic power source 714 retracts, causing the limiting column 716 to press the second arc plate 718 away from the first arc plate 717, thus stretching the first spring 720, but not... This causes the second arc-shaped plate 718 to move along the sliding guide direction of the wedge-shaped groove 710, thereby temporarily fixing the limiting post 716 in a position where it is in contact with the first arc-shaped plate 717, the arc-shaped stop block 719, and the second arc-shaped plate 718 without shaking. It also ensures that the detection end of the pressure sensor 730 remains in contact with the upper end face of the second connecting post 735. Under the action of the ninth telescopic power source 707, the closing ring 705 closes the sampling port 105 on the sampling cylinder body 101. After the drone 104 hovers to the designated position, it slowly descends, causing the sampling cylinder body 101 and the first mounting post 103 to submerge together in the water. After submerging to the designated depth, the propeller 701 rotates under the action of the seventh rotational power source 736, propelling the sampling cylinder body 101... 01 and the first mounting post 103 are temporarily positioned at a designated depth in the river. The second rotary power source 129 rotates again, causing the sampling cylinder body 101 to rotate 360 ​​degrees clockwise along its central axis (when the ninth rotary power source rotates, causing the sampling cylinder body 101 to rotate, the downward pressure applied by the first mounting post 103 through the propeller 701 under the action of the seventh rotary power source 736 can overcome the rotational force of the sampling cylinder body 101 and will not rotate with the rotation of the sampling cylinder body 101). This causes the driven piston 704 in the L-shaped oil pipe 702 to transmit the force received by the pressure-bearing piston 703 to the detection end of the pressure sensor 730, thereby obtaining information about the water flow impact force around the side wall of the sampling cylinder body 101. The detected water flow... The seventh rotary power source 736, located near the position of minimum impact force, increases its rotation speed, causing the sampling cylinder body 101 and the first mounting column 103 to overcome the impact force of the water flow and remain vertically positioned at a specified depth in the river. Then, under the continued rotation of the second rotary power source 129, the sampling cylinder body 101 rotates until the pressure sensor 730 detects the maximum pressure, at which point the ninth rotary power source stops rotating. At this point, the sampling port 105 of the sampling cylinder body 101 faces the direction of the water flow. Then, the closing ring 705 retracts as the ninth telescopic power source 707 retracts, exposing the sampling port 105 on the sampling cylinder body 101. The sampling cylinder body 101 then takes samples through the sampling port 105. During the sampling process, the tenth telescopic power source 714 retracts periodically.The second arc-shaped plate 718 slides away from the sliding guide direction of the wedge groove 710 away from the first spring 720, thereby extending from the inside of the sampling groove into the filter port 727 on the filter plate 726 through the several unblocking columns 723 on the connecting plate 722. Then, the closing ring 705 scrapes away any garbage, mud, or other attachments that may be present on the outer wall of the sampling tube body 101 of the sampling port 105 under the extension of the ninth telescopic power source 707. Afterward, the tenth telescopic power source 714 extends, causing the limiting column 716 to press the second arc-shaped plate 718 away from the first arc-shaped plate 717, causing the first spring 720 to stretch, but not stopping the second arc-shaped plate 718 when it moves along the sliding guide direction of the wedge groove 710. Then the closing ring 705... 5. With the retraction of the ninth telescopic power source 707, the sampling port 105 on the sampling cylinder body 101 is exposed again. After repeating the above operation, the sampling tank inside the sampling cylinder body 101 collects enough river water. Because the air pressure inside the sampling tank reaches equilibrium with the outside, subsequent river water cannot enter the sampling tank. At this time, the water level in the sampling tank is lower than the minimum height of the sampling port 105. The sealing ring 705 closes the sampling port 105 on the sampling cylinder body 101 with the extension of the ninth telescopic power source 707. All the seventh rotating power sources 736 stop rotating, causing all the propellers 701 to stop rotating. The drone 104 slowly rises, allowing the sampling cylinder body 101 and the first mounting column 103 to be removed from the river water, thus completing the sampling work.

[0038] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A river water collection system, characterized in that, The river water collection system includes: The sampler includes a sampling cylinder body, a counterweight body, a first mounting column, and a drone. The counterweight body is detachably mounted on the lower end face of the sampling cylinder body. The sampling cylinder body is detachably mounted on the first mounting column. A sampling port is provided on the side wall of the sampling cylinder body. The sampling cylinder body is rotatably mounted on the lower end face of the first mounting column. The rotation axis of the sampling cylinder body coincides with the center line of the first mounting column. The drone and the first mounting column are fixedly connected by a connecting rope. The system includes a mobile platform, a sampling placement platform, a sampling cylinder separation unit, a water sample collection unit, and a sampling cylinder cleaning unit. All three units are fixedly mounted on the mobile platform. The sampling cylinder separation unit is located between the water sample collection unit and the sampling cylinder cleaning unit, and is situated below the sampling placement platform. The sampling cylinder separation unit includes a first clamping block and a sliding block. The first clamping block is mounted on the sliding block and clamps the counterweight body placed on the sampling placement platform after sampling. The sliding block is positioned on the first clamping block... The sampling cylinder body is removed from the first mounting column under the clamping of the sampling cylinder body. The water sample collection unit includes a rotating block and several collection bottles. The rotating block is rotatably mounted on the sliding block. Under the clamping of the sampling cylinder body by the first clamping block, the rotating block rotates and pours the water in the sampling cylinder body into the collection bottles. The sampling cylinder cleaning unit includes a gripper, a counterweight separation assembly, a water nozzle, and an air nozzle. The gripper holds the sampling cylinder body after the water has been poured out. The counterweight separation assembly removes the counterweight body from the sampling cylinder body. The water nozzle sprays water to rinse the inner wall of the sampling cylinder body. The air nozzle dries the inner wall of the sampling cylinder body after the water has been sprayed and rinsed.

2. The river water collection system according to claim 1, characterized in that: The river water collection system also includes a guide cylinder, a support cylinder, two first arched guide ramps, two protrusions, two second arched guide ramps, two mounting frames, and two first V-shaped guide ramps; The outer wall of the guide tube is fixedly installed on the sampling platform. The guide tube passes through the upper and lower end faces of the sampling platform. The lower end face of the guide tube is lower than the lower end face of the sampling platform. The inner diameter of the guide tube is the same as the diameter of the first mounting column. The guide cylinder has two first arched guide ramps, which are arranged opposite to each other. A first guide channel is formed at the end of the two first arched guide ramps that are close to each other. The two first guide channels are arranged opposite to each other along the width direction of the sampling platform. A protrusion is fixedly installed on the upper end face of the middle part of each first arched guide ramp. The two protrusions are located on both sides of the length direction of the sampling platform. A second arched guide ramp is opened on the upper end face of each protrusion. The top of the second arched guide ramp is at the same height as the upper end face of the guide cylinder. A first annular guide ramp is opened at the lower part of the first mounting column. Two first guide blocks are fixedly installed on the side wall of the upper part of the first mounting column. The two first guide blocks are arranged opposite to each other along the radial direction of the first mounting column. The cross-section of the first guide block is the same as the transverse surface of the first guide channel. A third arched guide ramp is opened on the lower end face of each first guide block. Two mounting brackets are fixedly installed on the lower end face of the sampling platform. The two mounting brackets are located on both sides of the sampling platform in the width direction. The lower end face of the two mounting brackets is lower than the lower end face of the guide cylinder. The outer side wall of the support cylinder is fixedly installed on the two mounting brackets. The central axis of the support cylinder coincides with the central axis of the guide cylinder. The upper inner diameter of the support cylinder is the same as the inner diameter of the guide cylinder. The upper height of the support cylinder is the same as the upper height of the first mounting column. Two first V-shaped guide ramps are opened on the upper inner side wall of the support cylinder. The two first V-shaped guide ramps are arranged opposite to each other along the width direction of the sampling platform. A second annular guide ramp is opened on the lower inner wall of the support cylinder. The diameter of the upper upper surface of the second annular guide ramp is larger than the diameter of the lower surface. The second annular guide ramp is the same as the first annular guide ramp, and the diameter of the lower surface of the second annular guide ramp is larger than the outer diameter of the sampling cylinder body.

3. The river water collection system according to claim 2, characterized in that: The river water collection system also includes two first telescopic power sources, two semi-circular baffles, two second telescopic power sources, two first mounting blocks, two first rotational power sources, and two hexagonal screwdrivers; Each of the two mounting brackets has a first telescopic power source fixedly connected to its opposite end face. The protruding ends of the two first telescopic power sources are horizontally arranged and opposite to each other. Each protruding end of the first telescopic power source has a semi-circular baffle fixedly connected to it. The upper end face of the semi-circular baffle is at the same height as the lower end face of the guide cylinder. The two semi-circular baffles can open or close the lower opening of the guide cylinder under the action of the first telescopic power source. The lower end face of the first mounting post has a first circular groove, the central axis of the first circular groove coincides with the center line of the first mounting post. A snap-fit ​​post is fixedly mounted on the first mounting post, the central axis of the snap-fit ​​post coincides with the central axis of the first mounting post, the diameter of the snap-fit ​​post is smaller than the diameter of the first circular groove, the upper end face of the snap-fit ​​post extends upward beyond the upper end face of the first mounting post, the lower end face of the snap-fit ​​post extends downward beyond the upper end face of the first circular groove, the lower end face of the snap-fit ​​post has a second circular groove, the side wall of the second circular groove is connected to a first guide groove, the sliding guide direction of the first guide groove is parallel to the direction of the center line of the first mounting post, the upper end face of the first guide groove is at the same height as the upper end face of the second circular groove, the lower end face of the first guide groove is at the same height as the lower end face of the second circular groove, the upper end face of the first guide groove is higher than the upper end face of the first mounting post, and two opposing second V-shaped guide ramps are opened on the lower inner side of the second circular groove, the ends of the two V-shaped guide ramps near the first guide groove are higher than the ends away from the first guide groove; An installation rod is fixedly installed inside the sampling cylinder body. The diameter of the installation rod is the same as the diameter of the second circular groove. The central axis of the installation rod coincides with the rotation axis of the sampling cylinder body. The upper end face of the installation rod extends out of the upper end face of the sampling cylinder body. A first cylinder is fixedly installed on the upper end face of the installation rod. The central axis of the first cylinder coincides with the central axis of the installation rod. A second cylinder is fixedly installed on the upper end face of the first cylinder. The central axis of the second cylinder coincides with the central axis of the first cylinder. The diameter of the first cylinder is smaller than the diameter of the second cylinder, and the diameter of the second cylinder is smaller than the diameter of the installation rod. The upper end face of the mounting rod is provided with a guide post, and a second guide block is fixedly installed on the side wall of the guide post. The upper end face of the second guide block is provided with a fourth arched guide slope. The second guide block can slide in the first guide groove along the sliding guide direction of the first guide groove. The lower end face of the guide post is provided with a first rotating groove. The size of the first rotating groove is the same as the size of the first cylinder. The upper end face of the first rotating groove is provided with a second rotating groove. The second rotating groove is connected vertically to the first rotating groove. The size of the second rotating groove is the same as the size of the second cylinder. The first rotating groove surrounds the first cylinder, and the second rotating groove surrounds the second cylinder. The upper sidewall of the snap-fit ​​post is provided with a first threaded hole and a second threaded hole through it laterally. The first threaded hole and the second threaded hole are located above the first mounting post. The central axis of the first threaded hole and the second threaded hole is parallel to the radial direction of the first mounting post along the center position of the two first guide blocks. The upper sidewall of the guide post is provided with a first through hole through it laterally. The two ends of the first through hole can be connected to the first threaded hole and the second threaded hole respectively. The first threaded hole, the first through hole and the second threaded hole can be threaded into the internal hexagonal screw at the same time. Each mounting bracket has a second telescopic power source horizontally mounted on it. The extended ends of the two second telescopic power sources are arranged opposite each other. A first mounting block is fixedly mounted on the extended end of each second telescopic power source. A first arc-shaped guide slope is opened on the lower part of the opposite end face of the two first mounting blocks. A fixed end of a first rotary power source is fixedly mounted on each first mounting block. A hexagonal screwdriver is fixedly mounted on the rotating end of the two first rotary power sources. The rotation axes of the two first rotary power sources coincide. When the first mounting column is placed in the support cylinder, the lower end face of the first mounting block is at the same height as the upper end face of the first mounting column. The central axis of the first through hole coincides with the rotation axes of the two first rotary power sources. The hexagonal screwdriver can turn the internal hexagonal screw out of the first through hole.

4. The river water collection system according to claim 3, characterized in that: A ring gear is fixedly connected to the upper end face of the sampling cylinder body. The central axis of the ring gear coincides with the central axis of the sampling cylinder body. The maximum outer diameter of the ring gear is smaller than the outer diameter of the sampling cylinder body. The fixed end of the second rotary power source is fixedly installed inside the first mounting column. The rotation axis of the second rotary power source is parallel to the central axis of the first mounting column. The rotating end of the second rotary power source is fixedly connected to a first gear. The first gear is located inside the first mounting column, and part of the first gear extends into the first circular groove. When the sampling cylinder body is inserted into the first circular groove, the first gear and the ring gear remain engaged.

5. A river water collection system according to claim 1, characterized in that: The sampling tube separation unit also includes a third telescopic power source and a fourth telescopic power source; There are two first clamping blocks, which are arranged opposite each other on both sides of the central axis of the support cylinder. The opposite end faces of the two first clamping blocks are fixedly installed with the protruding ends of the third telescopic power source. The two third telescopic power sources are arranged horizontally, and the protruding ends of the two third telescopic power sources are arranged opposite each other. The fixed end of the third telescopic power source is arranged on the sliding block. The first clamping block can clamp the side wall of the counterweight body under the action of the third telescopic power source. The extended end of the fourth telescopic power source is fixedly installed on the sliding block. The telescopic direction of the fourth telescopic power source is vertical. The fixed end of the fourth telescopic power source is fixedly installed on the moving platform. The sliding block is located directly below the support cylinder. Both mounting brackets have sliding grooves on their opposite end faces. The sliding grooves are located below the support cylinder. The sliding guide direction of the sliding grooves is parallel to the central axis of the support cylinder. The sliding block is slidably disposed in the sliding groove. Under the action of the fourth telescopic power source, the sliding block slides up and down along the sliding guide direction of the sliding groove.

6. A river water collection system according to claim 5, characterized in that: The water sample collection unit also includes a third rotary power source, a second gear, a third gear, a rotating column, a third rotating groove, a first mounting platform, an L-shaped connecting column, a funnel, a turntable, a fourth rotary power source, a placement hole, a second guide groove, a fifth telescopic power source, and a push block; The third rotary power source is fixedly installed on the sliding block. The third rotary power source is horizontally positioned, and its rotation axis is parallel to the width direction of the sampling platform. The rotating end of the third rotary power source passes through the sliding block and is fixedly installed with a second gear. Rotating columns are fixedly installed at both ends of the rotating block along the width direction of the sampling platform. The sliding block has third rotating slots on both sides along the width direction of the sampling platform. The rotating column near the second gear passes through the third rotating slot near the second gear and is fixedly installed with a third gear. The third gear meshes with the second gear. The rotating column away from the second gear is rotatably positioned in the third rotating slot away from the second gear. The rotating block has a placement slot. When the rotating block rotates to a horizontal position under the action of the third rotary power source, the placement slot is located on the upper end face of the rotating block, and the central axis of the placement slot coincides with the central axis of the support cylinder. The two first clamping blocks are located on opposite sides of the placement slot. The fixed ends of the two third telescopic power sources are fixedly installed on the rotating block. The first mounting platform is fixedly mounted on the mobile platform. The lower end of the first mounting platform is fixedly mounted with the fixed end of the fourth rotary power source. The rotation axis of the fourth rotary power source is vertically set. The rotating end of the fourth rotary power source passes through the upper and lower end surfaces of the first mounting platform and is fixedly mounted with a turntable. The upper end surface of the turntable has a plurality of placement holes arranged in a circular array along the circumferential direction of the turntable's central axis. Each placement hole has a second guide groove on its side wall. Each collection bottle has a third guide block on its side wall. When the collection bottle is placed in the placement hole, the third guide block is located in the second guide groove. The upper opening of the collection bottle is rotatably fitted with a bottle stopper. One end of the L-shaped connecting column is fixedly installed on one of the mounting brackets, and the other end of the L-shaped connecting column is fixedly installed on the outer wall of the funnel. The upper opening of the funnel is larger than the lower opening, and the lower opening of the funnel is smaller than the upper opening of the collection bottle. When one of the collection bottles rotates to directly below the lower opening of the funnel under the action of the fourth rotational power source, the rotating block of the sampling cylinder body after the first clamping block clamps and samples is completed rotates to a vertical position under the action of the third rotational power source. When the sampling cylinder body is vertical, the hollow cross section inside is in the shape of an inverted isosceles trapezoid. The water inside the sampling cylinder body is poured into the funnel through the sampling port. The push block is fixedly installed at the extended end of the fifth telescopic power source, which is horizontally positioned. The fixed end of the fifth telescopic power source is fixedly installed on the L-shaped connecting column. The lower part of the push block away from the fifth telescopic power source has a second arc-shaped guide slope. When one of the collection bottles rotates to directly below the lower opening of the funnel under the action of the fourth rotary power source, the rotation axis of the stopper on the adjacent other collection bottle is perpendicular to the telescopic axis of the fifth telescopic power source. Under the action of the fifth telescopic power source, the push block can push the stopper on the adjacent other collection bottle from the upper opening of the open collection bottle to the upper opening of the closed collection bottle.

7. A river water collection system according to claim 6, characterized in that: The sampling tube cleaning unit also includes a sixth telescopic power source, a seventh telescopic power source, a second mounting platform, a fifth rotary power source, and a rotating drum; the counterweight separation assembly includes a second clamping block, an eighth telescopic power source, a connecting block, a second mounting column, and a sixth rotary power source. The fixed end of the gripper is fixedly installed on the extended end of the sixth telescopic power source. The sixth telescopic power source is horizontally set, and the telescopic axis of the sixth telescopic power source intersects with the central axis of the placement groove. The telescopic axis of the sixth telescopic power source is perpendicular to the central axis of the placement groove. The fixed end of the sixth telescopic power source is fixedly installed on the extended end of the seventh telescopic power source. The extension direction of the seventh telescopic power source is vertically downward. The fixed end of the seventh telescopic power source is fixedly installed on the lower end face of the sampling placement stage. The second mounting platform is fixedly mounted on the mobile platform. The lower end of the second mounting platform is fixedly mounted with the fixed end of the fifth rotary power source. The rotation axis of the fifth rotary power source is vertically set. The rotating end of the fifth rotary power source passes through the upper and lower end surfaces of the second mounting platform and is fixedly mounted with a rotating cylinder. The lower end of the sampling cylinder body is provided with a rotating thread, and the upper end of the counterweight body is fixedly connected with a threaded post. The rotating thread on the sampling cylinder body is threadedly connected to the threaded post on the counterweight body. A sealing ring is also fixedly installed on the upper end face of the counterweight body. When the rotating thread on the sampling cylinder body is threadedly connected to the threaded post on the counterweight body, the sealing ring seals the space between the upper end face of the counterweight body and the lower end face of the sampling cylinder body. The second mounting post is fixedly mounted on the upper end face of the rotating drum. The sixth rotary power source is fixedly mounted on the second mounting post. The rotating end of the sixth rotary power source is vertically upward. The connecting block is fixedly mounted on the rotating end of the sixth rotary power source. An eighth telescopic power source is fixedly mounted on both ends of the connecting block. The extended ends of the two eighth telescopic power sources are arranged opposite each other, and a second clamping block is fixedly mounted on the extended end of each eighth telescopic power source. When the clamp moves the sampling cylinder body to above the rotating drum under the action of the sixth telescopic power source, the second mounting post rotates to directly below the sampling cylinder body under the action of the sixth rotary power source. The second clamping block can clamp the side wall of the counterweight body under the action of the eighth telescopic power source. The second clamping block clamping the side wall of the counterweight body can separate the counterweight body from the sampling cylinder body under the action of the sixth rotary power source.

8. A river water collection system according to claim 7, characterized in that: The sampling tube cleaning unit also includes a first water pump, a first outlet hard pipe, an annular horizontal baffle, an annular vertical baffle, a first connecting pipe, an annular water tank, a second connecting pipe, a first water tank, a second water tank, a second water pump, a second outlet hard pipe, and a nozzle body; The rotating drum is hollow inside. The first water pump is fixedly installed inside the rotating drum. The water inlet of the first water pump is connected to the inside of the rotating drum. The water outlet of the first water pump is connected to the first water outlet hard pipe. The first water outlet hard pipe passes through the rotating drum upward and is connected to the water nozzle. The annular transverse baffle is fixedly installed on the side wall of the upper part of the rotating cylinder. The upper end face of the annular transverse baffle is at the same height as the upper end face of the rotating cylinder. The annular vertical baffle is fixedly installed on the outer side wall of the annular transverse baffle. The upper end face of the annular vertical baffle is higher than the upper end face of the annular transverse baffle. The first connecting pipe is fixedly installed on the annular transverse baffle and passes through the upper and lower end faces of the annular transverse baffle. The upper end face of the first connecting pipe is at the same height as the upper end face of the annular transverse baffle. The annular water tank is fixedly installed on the second mounting platform. The inlet end of the annular water tank is connected to the outlet end of the first connecting pipe. The lower end face of the first connecting pipe is lower than the upper end face of the annular water tank. The second connecting pipe is fixedly installed on the annular water tank and passes through the upper and lower end faces of the lower part of the annular water tank. The upper end face of the second connecting pipe is at the same height as the upper end face of the lower part of the annular water tank. The lower end face of the second connecting pipe passes through the upper and lower end faces of the second mounting platform and then connects to the inlet end of the first water tank. The first water tank is placed on the moving platform. The second water tank is fixedly installed on the second mounting platform, and the second water pump is fixedly installed inside the second water tank. The inlet of the second water pump is connected to the inside of the second water tank, and the outlet of the second water pump is connected to the second outlet hard pipe. The second outlet hard pipe passes through the second water tank upward and is connected to the nozzle body. The nozzle body can clean the upper end face of the threaded column on the counterweight body after it is separated from the sampling cylinder body.

9. A river water collection system according to claim 8, characterized in that: The sampling tube cleaning unit also includes an air pump, a mounting box, and an air outlet rigid pipe; Both the air pump and the mounting box are fixedly mounted on the rotating drum. The air pump is located inside the mounting box, with the air inlet end of the air pump located inside the mounting box. The air outlet end of the air pump is connected to one end of the air outlet hard pipe, and the other end of the air outlet hard pipe passes through the side wall of the mounting box and is connected to the air blowing nozzle. An opening is provided on the upper part of the side wall of the mounting box. When the nozzle body cleans the upper end face of the threaded column on the counterweight body after it is separated from the sampling cylinder body, the opening is opposite to the spraying direction of the nozzle body.

10. A river water collection system according to claim 7, characterized in that: The maximum outer diameter of the water nozzle and the air nozzle is smaller than the inner diameter of the sampling cylinder body. The water nozzle, the air nozzle and the second mounting column are arranged in an array along the circumferential direction of the rotating cylinder axis. When the counterweight body, after being separated from the sampling cylinder body, rotates to the nozzle body to clean the upper end face of the threaded column on the counterweight body, the water nozzle rotates to directly below the sampling cylinder body under the action of the fifth rotating power source.

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