Full-automatic lake water profile continuous sampling device

Abstract

The application relates to an automatic lake water profile continuous sampling device, which belongs to the technical field of environmental monitoring and comprises a submarine body, a power mechanism, a sampling mechanism and a control system. The power mechanism is installed on the submarine body and used for driving the submarine body to move; the sampling mechanism comprises a sampling unit and a cleaning unit; the sampling unit comprises a water ring vacuum pump, a water receiving box and a plurality of collecting containers; the water ring vacuum pump is connected with the water receiving box; the water receiving box is connected with the plurality of collecting containers simultaneously; each collecting container is provided with a switch valve; the cleaning unit is connected with the water receiving box; the collecting containers are used for collecting liquid; and the cleaning unit is used for cleaning the water receiving box. The power mechanism and the sampling mechanism are in communication connection with the control system. The automatic sampling device can realize continuous and accurate sampling of lake water profiles, has an online cleaning function and can avoid sample cross contamination.

Description

Technical Field

[0001] This invention relates to the field of environmental monitoring technology, and more specifically, to a fully automated continuous sampling device for lake water profiles. Background Technology

[0002] In fields such as environmental monitoring, water resource surveys, and lake ecological research, continuous profile sampling of lake water is a key method for obtaining the vertical distribution patterns of water physicochemical properties (such as temperature, dissolved oxygen, pH, and nutrient content). Traditional lake water sampling methods are mainly divided into two categories: one is to use a water sampler to collect samples at different depths manually. This method is cumbersome, inefficient, and difficult to achieve high-resolution continuous profile sampling. It is also susceptible to human interference during the sampling process. The other method is to use a ship-mounted winch to carry a single sampling bottle for layer-by-layer sampling. Although this method achieves depth sampling to some extent, the equipment needs to be repeatedly raised and lowered during the sampling process, which is time-consuming. Furthermore, cross-contamination or contact with the external environment can easily occur between water samples during transfer, leading to sample distortion.

[0003] In the existing technology, although some automated sampling devices integrate multi-bottle sampling functions, they generally have the following shortcomings: First, the inner wall of the sampling pipeline is prone to residual water sample from the previous sampling. If it is not effectively cleaned, it will seriously affect the detection accuracy of water samples at the next depth. Second, most devices lack an integrated cleaning unit, which makes it difficult to clean the pipeline after sampling. Long-term use can easily breed microorganisms and affect the sampling quality. Summary of the Invention

[0004] The present invention includes, for example, providing a fully automated continuous sampling device for lake water profiles, which can achieve continuous and accurate sampling of lake water profiles and has an online cleaning function to avoid cross-contamination of samples.

[0005] The embodiments of the present invention can be implemented as follows: In a first aspect, the present invention provides a fully automated continuous sampling device for lake water profiles, comprising: Submersible body, power system, and sampling mechanism; The power mechanism is installed on the submersible body and is used to drive the submersible body to move; The sampling mechanism includes a sampling unit and a cleaning unit. The sampling unit includes a water ring vacuum pump, a water receiving box, and multiple collection containers. The water ring vacuum pump is connected to the water receiving box, and the water receiving box is simultaneously connected to multiple collection containers. Each collection container is equipped with a switch valve. The cleaning unit is connected to the water receiving box. The collection container is used to collect liquid, and the cleaning unit is used to clean the water receiving box.

[0006] In an optional embodiment, the water receiving box includes a box body and multiple connectors. The box body is provided with a transfer chamber. The multiple connectors are all connected to the box body and communicate with the transfer chamber. The multiple collection containers are respectively connected to the multiple connectors one by one. The air intake of the water ring vacuum pump is connected to the box body and communicates with the transfer chamber. The water outlet of the cleaning unit is connected to the box body and communicates with the transfer chamber.

[0007] In an optional embodiment, the collection container includes a first valve, a cover, and a collection pipe. The first valve is mounted on the cover, and the cover is connected to the collection pipe. The cover is used to open or close the collection pipe. The first valve is connected to a corresponding connector.

[0008] In an optional embodiment, the plurality of connectors are divided into a plurality of connection units, the plurality of connection units are arranged at intervals along the length direction of the box, each connection unit includes a plurality of connectors, and the plurality of connectors of the same connection unit are arranged at intervals along the width direction of the box. The box has a first side and a second side in its width direction. The first side is provided with a plurality of first interfaces that can be opened and closed independently. The plurality of first interfaces are respectively matched with a plurality of the connecting units. The air intake of the water ring vacuum pump can be connected to at least one of the first interfaces. The water receiving box also includes a partition plate, which is installed inside the box to divide the transfer chamber into at least two independent sub-chambers, each of which is connected to at least one first interface.

[0009] In an optional embodiment, the partition plate and the box body are slidably fitted together along the length of the box body to adjust the volume of the corresponding sub-cavities.

[0010] In an optional embodiment, there are multiple partitions, each of which is slidably fitted with the box body along the length of the box body, and a sub-cavity can be formed between adjacent partitions.

[0011] In an optional embodiment, the sampling unit further includes a first driver, a first conduit, a first connecting tube, a first baffle, and a first inflatable and deflated annular airbag; the first driver is connected to both the submersible body and the first connecting tube, one end of the first conduit is connected to the air inlet, and the other end of the first conduit is slidably connected to the first connecting tube, with the first conduit and the first connecting tube in a sealed fit; the first annular airbag is fixed to the end of the first connecting tube away from the first conduit. The first baffle is installed on the first side, and the first connecting tube is slidably connected to the first baffle in the length direction of the box body. A portion of the first connecting tube is clamped by the first baffle and the box body to restrict the first connecting tube from moving away from the box body. Multiple first interfaces are located on the sliding path of the first annular airbag, and the first annular airbag is used to seal the area between the first connecting tube and the corresponding first interface.

[0012] In an optional embodiment, the second side is provided with a plurality of second interfaces that can be opened and closed independently, and the plurality of second interfaces are respectively matched with the plurality of connection units, and the cleaning unit can communicate with at least one of the second interfaces.

[0013] In an optional embodiment, the cleaning unit includes an openable and closable water tank, a second actuator, a second conduit, a second connecting pipe, a second baffle, and a second inflatable and deflated annular airbag; the second actuator is connected to the submersible body, one end of the second conduit is connected to the water tank, and the other end of the second conduit is slidably connected to the second connecting pipe, with the second conduit and the second connecting pipe in a sealed fit; the second annular airbag is fixed to the end of the second connecting pipe away from the second conduit. The second stop bar is installed on the second side, and the second connecting tube is slidably connected to the second stop bar in the length direction of the box body. A portion of the second connecting tube is clamped by the second stop bar and the box body to restrict the second connecting tube from moving away from the box body. Multiple second interfaces are located on the sliding path of the second annular airbag, and the second annular airbag is used to seal the area between the second connecting tube and the corresponding second interface.

[0014] In an optional embodiment, the fully automatic lake water profile continuous sampling device further includes an image acquisition mechanism, which is installed on the submersible body and is used to acquire environmental images around the submersible body.

[0015] The beneficial effects of the embodiments of the present invention include, for example: The fully automated continuous lake water profile sampling device provided in this embodiment achieves continuous profile sampling. By incorporating a submersible body and power mechanism, the sampling device can autonomously move along a vertical profile in the water. Simultaneously, the water ring vacuum pump in the sampling unit provides stable and powerful negative pressure suction. Combined with multiple collection containers equipped with on / off valves, it can automatically collect water samples sequentially into corresponding containers at different depths without repeated raising and lowering of the equipment. This achieves fully automated, high-resolution continuous lake water profile sampling, significantly improving sampling efficiency and depth positioning accuracy. By incorporating a cleaning unit connected to the water collection box, components such as the water collection box and water ring vacuum pump can be automatically cleaned after each sampling or before switching to different depths. This effectively removes residual water samples from previous samples from the inner walls of the pipes, avoiding cross-contamination between water samples from different depths and ensuring the representativeness of each water layer and the authenticity of the test data. Furthermore, the cleaning unit not only cleans the pipes during sampling but also performs deep cleaning and emptying of the entire sampling mechanism after the sampling task, preventing pipe blockage or microbial growth caused by residual water samples. This reduces the frequency and difficulty of equipment maintenance and extends the equipment's service life. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A first-view structural schematic diagram of the fully automated continuous lake water profile sampling device provided in this embodiment; Figure 2 A second-view structural schematic diagram of the fully automated continuous lake water profile sampling device provided in this embodiment; Figure 3 This is a partial structural schematic diagram of the fully automated continuous lake water profile sampling device provided in this embodiment; Figure 4 This is a schematic diagram of the structure of the collection container provided in this embodiment; Figure 5 This is a three-dimensional structural diagram of the water receiving box provided in this embodiment; Figure 6 This is a first-view cross-sectional structural diagram of the water receiving box provided in this embodiment; Figure 7 This is a cross-sectional view of the water receiving box provided in this embodiment from a second perspective. Figure 8 This is a schematic diagram of the structure of the water receiving box, the first conduit, and the first connecting pipe provided in this embodiment. Figure 9 This is a schematic diagram of the structure of the water receiving box, the second conduit, and the second connecting pipe provided in this embodiment.

[0018] icon: 100-Submersible body; 110-CTD sensor; 120-Dissolved oxygen sensor; 130-pH sensor; 140-Chlorophyll fluorescence sensor; 200-Power mechanism; 210-Motor; 220-Propeller; 300-Sampling mechanism; 310-Sampling unit; 311-Water ring vacuum pump; 3111-Intake port; 3112-First pipe; 312-Water receiving box; 3121-Box body; 3122-Connector; 3123-Separator plate; 3124-Sub-cavity; 3125-First interface; 3126-Second interface; 3127-Transfer chamber; 313-Collection container; 3131- 3132 - First valve; 3133 - Cover; 3134 - Collection pipe; 315 - First actuator; 316 - First conduit; 3161 - First ring stop; 317 - First baffle; 318 - First annular airbag; 319 - Support; 320 - Cleaning unit; 321 - Water storage tank; 322 - Second actuator; 323 - Second conduit; 324 - Second connecting pipe; 3241 - Second ring stop; 325 - Second baffle; 326 - Second annular airbag; 327 - Second valve; 3271 - Second pipe; 500 - Image acquisition mechanism; 600 - Positioning mechanism; 700 - Airbag. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this invention, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed, they are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0023] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0024] It should be noted that, where there is no conflict, the features in the embodiments of the present invention can be combined with each other.

[0025] Please refer to Figures 1-3 This embodiment provides a fully automatic continuous lake water profile sampling device, which includes a submersible body 100, a power mechanism 200, a sampling mechanism 300, and a control system. The power mechanism 200 is installed on the submersible body 100 and is used to drive the submersible body 100. The sampling mechanism 300 includes a sampling unit 310 and a cleaning unit 320. The sampling unit 310 includes a water ring vacuum pump 311, a water receiving box 312, and multiple collection containers 313. The water ring vacuum pump 311 is connected to the water receiving box 312, and the water receiving box 312 is simultaneously connected to multiple collection containers 313. Each collection container 313 is equipped with a switch valve. The cleaning unit 320 is connected to the water receiving box 312. The collection containers 313 are used to collect liquid, and the cleaning unit 320 is used to clean the water receiving box 312. Both the power mechanism 200 and the sampling mechanism 300 are communicatively connected to the control system.

[0026] As described above, the working principle of the fully automated continuous lake water profile sampling device provided in this embodiment is as follows: After the submersible 100 is deployed in the target water area, the power unit 200 is activated, driving the submersible 100 to descend along the vertical profile of the lake water according to a preset trajectory. Through the depth sensor or positioning system integrated on the submersible 100, the diving depth of the submersible 100 is monitored and controlled in real time, enabling it to accurately reach the predetermined sampling water layer.

[0027] When the submersible 100 reaches the first preset sampling depth, the control system first activates the cleaning unit 320 of the sampling unit 310 to pre-clean the water tank 312 and connecting pipelines to remove any residual liquid in the pipelines and ensure that the pipelines are clean before sampling. After the pre-cleaning is completed, the cleaning unit 320 is turned off.

[0028] Subsequently, the control system opens the switch valve corresponding to the collection container 313 and simultaneously starts the water ring vacuum pump 311. The water ring vacuum pump 311 creates a negative pressure environment within the water receiving box 312. Under the action of pressure difference, external lake water is drawn into the water receiving box 312 and then flows into the designated collection container 313 through the opened switch valve. When the collected water sample volume reaches the set value or the sampling time reaches the preset duration, the control system closes the switch valve and stops the water ring vacuum pump 311, completing the water sample collection at that depth.

[0029] Next, the submersible 100, driven by the power unit 200, continues to descend or ascend to the next preset sampling depth. To avoid cross-contamination of water samples from the previous and subsequent samplings in the shared pipeline, the control system restarts the cleaning unit 320 before starting sampling at the next depth to clean the docking water box 312 and the pipeline. After cleaning, the control system opens the switch valve corresponding to the next collection container 313 and restarts the water ring vacuum pump 311 to collect the water sample from the current depth into the corresponding collection container 313.

[0030] Similarly, as the sampling device moves along the vertical profile of the lake water, it sequentially opens and closes the valves of different collection containers 313, and combines the online cleaning function of the cleaning unit 320 to independently collect water samples from each depth into multiple collection containers 313, thereby achieving continuous profile sampling.

[0031] It should be understood that after all sampling tasks are completed, the submersible 100 will rise to the surface. At this time, the control system will activate the cleaning unit 320 to perform deep cleaning of the inlet pipes of the docking water tank 312 and each collection container 313, draining the residual water sample from the system to prevent impurities from accumulating or microorganisms from growing. After cleaning, all valves will remain closed, and the collection containers 313 will be sealed to facilitate the subsequent removal of water samples for laboratory analysis.

[0032] It is worth noting that during the entire sampling process, the water ring vacuum pump 311 serves as the sampling power source, providing stable and continuous negative pressure to ensure reliable water sample extraction under different water depth conditions; the water receiving box 312 serves as a water sample transfer hub, and together with the cleaning unit 320, it realizes online cleaning of the pipeline system, ensuring the independence and representativeness of water samples at each depth.

[0033] The following embodiments illustrate the details of the fully automated continuous lake water profile sampling device of this application by way of example.

[0034] Please refer to Figures 1-9In this embodiment, an optional fully automatic continuous lake water profile sampling device includes a submersible body 100, a power mechanism 200, a sampling mechanism 300, a control system, an image acquisition mechanism 500, and a positioning mechanism 600. The power mechanism 200 is connected to the submersible body 100 and can drive the submersible body 100 to move underwater or on the surface. The sampling mechanism 300, image acquisition mechanism 500, positioning mechanism 600, and control system are all mounted on the submersible body 100, and are communicatively connected to the control system. The sampling mechanism 300 can collect water samples, the image acquisition mechanism 500 can acquire images of the area surrounding the submersible body 100, and the positioning mechanism 600 can acquire the depth of the submersible body 100.

[0035] It should be understood that the vertical movement of the submersible body 100 can refer to existing structures, and is not specifically limited in this embodiment.

[0036] In addition, the power mechanism 200 can adopt a structure in which the motor 210 and the propeller 220 work together. Furthermore, the number of power mechanisms 200 can be designed as needed, and there can be multiple ones, distributed at the rear and sides of the submersible body 100. Multiple power mechanisms 200 work together to adjust the attitude, direction of movement and speed of the submersible body 100.

[0037] In this embodiment, optionally, the sampling mechanism 300 includes a sampling unit 310 and a cleaning unit 320. Both the sampling unit 310 and the cleaning unit 320 are installed on the submersible body 100. The sampling unit 310 can collect water samples, and the cleaning unit 320 can clean the sampling unit 310 to avoid cross-contamination between samples.

[0038] Please refer to Figures 3-9Optionally, the sampling unit 310 includes a water ring vacuum pump 311, a water receiving box 312, multiple collection containers 313, a first driver 314, a first conduit 315, a first connecting pipe 316, a first baffle 317, and a first annular airbag 318 capable of inflation and deflation. The water ring vacuum pump 311, the first driver 314, the water receiving box 312, and the multiple collection containers 313 are all mounted on the submersible body 100. The water ring vacuum pump 311 has a discharge port and a suction port 3111. The discharge port is located in the liquid environment, and the suction port 3111 is connected to the first conduit 315 through the first pipe 3112, and the two are sealed together. The first connecting pipe 316 can be inserted into or sleeved outside the first conduit 315, and the two are connected and dynamically sealed together. That is, the first connecting pipe 316 can slide relative to the first conduit 315 in a set direction, and the two remain sealed during the sliding process. The port of the first connecting pipe 316 away from the first conduit 315 is fixedly connected to the first annular airbag 318. The first connecting pipe 316 communicates with the water receiving box 312. A first annular airbag 318 is located between the first connecting pipe 316 and the water receiving box 312, sealing the gap between them. Multiple collection containers 313 are all connected to the water receiving box 312. A first baffle 317 is mounted on the water receiving box 312, and the baffle 317 and the water receiving box 312 cooperate to clamp a portion of the first connecting pipe 316, limiting its movement away from the water receiving box 312. The first connecting pipe 316 can slide relative to the first baffle 317 and the water receiving box 312 in a set direction under the drive of the first driver 314. The first connecting pipe 316 can selectively connect to a first interface 3125. The set direction is the length direction of the water receiving box 312.

[0039] Please refer to Figures 5-9Optionally, the water receiving box 312 includes a box body 3121, multiple connectors 3122, and multiple partitions 3123. The box body 3121 is generally rectangular and has a transfer cavity 3127. The box body 3121 has a first side and a second side arranged at intervals along its width. Multiple first interfaces 3125 are provided on the first side, and these interfaces are evenly spaced along the length of the box body 3121. Each first interface 3125 can be equipped with an independently controlled first solenoid valve. The second side has multiple second interfaces 3126, which are also evenly spaced along the length of the box body 3121. Each second interface 3126 can be equipped with an independently controlled second solenoid valve. Both the first and second solenoid valves are communicatively connected to the control system. The multiple connectors 3122 are connected to the top of the box body 3121 and communicate with the transfer cavity 3127. A first baffle 317 is fixed to the first side. Multiple partition plates 3123 can be slidably installed in the box body 3121. The multiple partition plates 3123 are arranged in parallel along the length of the box body 3121. A sub-cavity 3124 can be formed between adjacent partition plates 3123 and between the side partition plates 3123 and the box body 3121. Each sub-cavity 3124 can communicate with at least one first interface 3125.

[0040] It should be understood that the number of connectors 3122 can be set as needed, and this embodiment does not impose a specific limitation. Furthermore, the multiple connectors 3122 are divided into multiple connection units, and the multiple connection units are arranged at intervals along the length direction of the housing 3121. Each connection unit includes multiple connectors 3122, and the multiple connectors 3122 of the same connection unit are arranged at intervals along the width direction of the housing 3121.

[0041] Furthermore, the number of partition plates 3123 can be two or three, or even just one, depending on the design requirements. The goal is to divide the transfer cavity 3127 into multiple independent sub-cavities 3124. In other words, the partition plates 3123 can slide within the housing 3121, maintaining a dynamic seal between them. This allows for adjustment of the volume of the sub-cavities 3124 to suit different usage needs. It should be noted that the partition plates 3123 can be magnetically adjusted. For example, an electromagnet can be installed at the bottom of the housing 3121, with the partition plates 3123 being metal plates. The number of electromagnets is equal to and corresponds one-to-one with the number of partition plates 3123, with each electromagnet controlling the position of one partition plate 3123. When the electromagnet slides, it can drive the corresponding partition plate 3123 to slide. After the electromagnet is fixed, the position of the partition plate 3123 is fixed, which is convenient to operate and eliminates the need to make holes in the box body 3121, thus improving the sealing performance of the box body 3121. By sliding the electromagnet, the position of the partition plate 3123 can be adjusted, thereby adjusting the position and volume of the sub-cavity 3124, so that the sub-cavity 3124 can be connected to the corresponding connector 3122 and the first interface 3125, thereby realizing the fixed-point collection operation of the corresponding collection container 313.

[0042] Specifically, when adjusting the position and volume of the sub-cavity 3124, at least one unit's multiple connectors 3122 can be connected to the sub-cavity 3124, and a first interface 3125 can be connected to the sub-cavity 3124. At the same time, by adjusting the position of the first connecting pipe 316, the first connecting pipe 316 is connected to the corresponding first interface 3125, and the first solenoid valve on the first interface 3125 is opened. In this way, liquid can enter the sub-cavity 3124 through the water ring vacuum pump 311, the first conduit 315, the first connecting pipe 316, and the first interface 3125. The corresponding collection container 313 can draw in the water in the sub-cavity 3124 through the connector 3122 and store it, thus realizing sampling. Since the position and volume of the sub-cavity 3124 are adjustable, it can be ensured that when the corresponding collection container 313 is sampling, the other collection containers 313 and the connector 3122 will not come into contact with the liquid, reducing the probability of contamination. In addition, the cleaning area is small, saving pure water and reducing the amount of pure water carried, which can expand the range of motion of the submersible body 100, thereby enabling the collection of water samples from a wider area.

[0043] It is worth noting that when adjusting the position of the first connecting pipe 316, the first annular airbag 318 is first deflated. The first annular airbag 318 has a small contact area with the housing 3121, resulting in less friction, less wear, and flexible position adjustment. When the first connecting pipe 316 moves to the corresponding position of the first interface 3125, an air pump can be used to inflate the first annular airbag 318. Because the first connecting pipe 316 is restricted by the first stop bar 317, it cannot move away from the housing 3121, thus allowing the first annular airbag 318 to simultaneously seal with both the first connecting pipe 316 and the first interface 3125, improving airtightness.

[0044] Optionally, the number of collection containers 313 can be designed as needed. Multiple collection containers 313 can be installed on the bracket 319. The multiple collection containers 313 can be arranged in layers, with multiple collection containers 313 on each layer. The multiple collection containers 313 on the same layer are arranged in a ring, making reasonable use of horizontal and vertical space and improving space utilization efficiency. Each collection container 313 can be connected to a corresponding connector 3122 through a pipe.

[0045] Please refer to Figure 4 Furthermore, the collection container 313 includes a first valve 3131, a cover 3132, and a collection pipe 3133. The first valve 3131 is mounted on the cover 3132, which is connected to the collection pipe 3133. The cover 3132 is used to open or close the collection pipe 3133. The first valve 3131 is connected to a corresponding connector 3122 via a pipe. Multiple positioning through holes can be provided on the bracket 319, and the collection pipe 3133 passes through the corresponding positioning through holes. The first valve 3131 can be a solenoid valve and is communicatively connected to the control system. The first valve 3131 can be opened and closed independently.

[0046] In this embodiment, optionally, the cleaning unit 320 includes an openable and closable water tank 321, a second actuator 322, a second conduit 323, a second connecting pipe 324, a second baffle 325, and a second inflatable and deflated annular airbag 326. A second valve 327 can be installed at the outlet of the water tank 321. The second valve 327 can be a solenoid valve and is communicatively connected to the control system. Both the water tank 321 and the second actuator 322 are mounted on the submersible body 100. One end of the second conduit 323 is connected to the second valve 327 on the water tank 321 via a second pipe 3271, and the other end of the second conduit 323 is slidably connected to the second connecting pipe 324, with the second conduit 323 and the second connecting pipe 324 forming a sealed fit. The second annular airbag 326 is fixed to the end of the second connecting pipe 324 away from the second conduit 323. A second stop bar 325 is installed on the second side and extends along the length of the housing 3121. A second connecting tube 324 is slidably connected to the second stop bar 325 along the length of the housing 3121. A portion of the second connecting tube 324 is clamped by the second stop bar 325 and the housing 3121 to restrict the second connecting tube 324 from moving away from the housing 3121. Multiple second interfaces 3126 are located on the sliding path of the second annular airbag 326. When the second connecting tube 324 slides, it can selectively dock with one second interface 3126. The second annular airbag 326 is used to seal the area between the second connecting tube 324 and the corresponding second interface 3126.

[0047] It should be understood that the water storage tank 321 can store pure water for cleaning pipes and the casing 3121.

[0048] It should be understood that both the first driver 314 and the second driver 322 can be linear drive structures such as cylinders or electric push rods.

[0049] The working principle of the fully automated continuous lake water profile sampling device according to the embodiments of this application is explained below: Before collection, the gas in all collection containers 313 is evacuated using a water ring vacuum pump 311 to achieve evacuation, and the first valve 3131 of all collection containers 313 is closed. When selecting multiple collection containers 313 to collect liquid simultaneously, try to select multiple collection containers 313 connected to the same or adjacent connection unit connectors 3122. According to the position of the connection unit, adjust the partition plates 3123 so that multiple partition plates 3123 cooperate to form a sub-cavity 3124. This sub-cavity 3124 is connected to all connectors 3122 of the corresponding connection unit. Furthermore, adjust the positions of the first connecting pipe 316 and the second connecting pipe 324 so that the first connecting pipe 316 is connected to the corresponding first interface 3125 and the second connecting pipe 324 is connected to the corresponding second interface 3126. In this way, the first connecting pipe 316 and the sub-cavity 3124 are connected, and the second connecting pipe 324 and the sub-cavity 3124 are connected, while the remaining first interfaces 3125 and the second interface 3126 are closed. When liquid needs to be collected, the first valves 3131 of all collection containers 313 are closed, and the second valves 327 on the water storage tank 321 are closed. The water ring vacuum pump 311 is turned on to empty the sub-cavity 3124. Then, the water ring vacuum pump 311 stops working, the second valve 327 is opened to allow water from the water storage tank 321 to enter the sub-cavity 3124, and then the second valve 327 is closed. Next, the water ring vacuum pump 311 is turned on again to discharge pure water, thus cleaning the sub-cavity 3124. After cleaning, the water ring vacuum pump 311 stops working, the first valve 3131 of the corresponding collection container 313 is opened, and under vacuum, the liquid is drawn into the collection pipe 3133. Then, the first valve 3131 is closed, thus collecting the liquid. After collection is completed, the action of cleaning the sub-cavity 3124 with pure water is repeated to facilitate the next liquid collection.

[0050] It should be understood that an air chamber 700 can be configured on the submersible body 100. The gas that fills the first annular airbag 318 and the second annular airbag 326, as well as the gas required by other components, can be obtained from the air chamber 700. The gas in the first annular airbag 318 and the second annular airbag 326 can also be discharged into the air chamber 700.

[0051] In other embodiments, a CTD sensor 110, a dissolved oxygen sensor 120, a pH sensor 130, and a chlorophyll fluorescence sensor 140 can be installed at the bottom of the submersible body 100 to enable more comprehensive monitoring of the aquatic environment. All sensors are communicatively connected to the control system.

[0052] Furthermore, to facilitate the positioning of the first connecting pipe 316 and the second connecting pipe 324, a first annular stop 3161 can be provided on the first connecting pipe 316. The first annular stop 3161 is integrally formed with the first connecting pipe 316 and is located between the first stop bar 317 and the housing 3121. The first annular stop 3161 can contact the first stop bar 317, thereby preventing the first connecting pipe 316 from detaching from the first stop bar 317. Correspondingly, a second annular stop 3241 can be provided outside the second connecting pipe 324. The second annular stop 3241 is integrally formed with the second connecting pipe 324 and is located between the second stop bar 325 and the housing 3121. The second annular stop 3241 can contact the second stop bar 325, thereby preventing the second connecting pipe 324 from detaching from the second stop bar 325.

[0053] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A fully automatic lake water profile continuous sampling device, characterized in that, include: Submersible body (100), power unit (200) and sampling unit (300); The power mechanism (200) is installed on the submersible body (100) and is used to drive the submersible body (100) to move; The sampling mechanism (300) includes a sampling unit (310) and a cleaning unit (320). The sampling unit (310) includes a water ring vacuum pump (311), a water receiving box (312), and multiple collection containers (313). The water ring vacuum pump (311) is connected to the water receiving box (312), and the water receiving box (312) is simultaneously connected to multiple collection containers (313). Each collection container (313) is equipped with a switch valve. The cleaning unit (320) is connected to the water receiving box (312). The collection container (313) is used to collect liquid, and the cleaning unit (320) is used to clean the water receiving box (312).

2. The fully automated continuous lake water profile sampling device according to claim 1, characterized in that: The water receiving box (312) includes a box body (3121) and multiple connectors (3122). The box body (3121) is provided with a transfer chamber (3127). The multiple connectors (3122) are all connected to the box body (3121) and communicate with the transfer chamber (3127). The multiple collection containers (313) are connected to the multiple connectors (3122) respectively. The air intake (3111) of the water ring vacuum pump (311) is connected to the box body (3121) and communicates with the transfer chamber (3127). The water outlet of the cleaning unit (320) is connected to the box body (3121) and communicates with the transfer chamber (3127).

3. The fully automated continuous lake water profile sampling device according to claim 2, characterized in that: The collection container (313) includes a first valve (3131), a cover (3132), and a collection pipe (3133). The first valve (3131) is mounted on the cover (3132), and the cover (3132) is connected to the collection pipe (3133). The cover (3132) is used to open or close the collection pipe (3133). The first valve (3131) is connected to the corresponding connector (3122).

4. The fully automated continuous lake water profile sampling device according to claim 2, characterized in that: The plurality of connectors (3122) are divided into a plurality of connecting units, and the plurality of connecting units are arranged at intervals along the length direction of the housing (3121). Each connecting unit includes a plurality of connectors (3122), and the plurality of connectors (3122) of the same connecting unit are arranged at intervals along the width direction of the housing (3121). The box (3121) has a first side and a second side in its width direction. The first side is provided with a plurality of first interfaces (3125) that can be opened and closed independently. The plurality of first interfaces (3125) are respectively matched with the plurality of connection units. The suction port (3111) of the water ring vacuum pump (311) can be connected to at least one first interface (3125). The water receiving box (312) also includes a partition plate (3123), which is installed inside the box body (3121) to divide the transfer chamber (3127) into at least two independent sub-chambers (3124), each of the sub-chambers (3124) being connected to at least one first interface (3125).

5. The fully automatic continuous lake water profile sampling device according to claim 4, characterized in that: The partition plate (3123) and the box body (3121) are slidably fitted together in the length direction of the box body (3121) to adjust the volume of the corresponding sub-cavity (3124).

6. The fully automated continuous lake water profile sampling device according to claim 5, characterized in that: There are multiple partition plates (3123), and each partition plate (3123) is slidably engaged with the box body (3121) in the length direction of the box body (3121). A sub-cavity (3124) can be formed between adjacent partition plates (3123).

7. The fully automated continuous lake water profile sampling device according to claim 5, characterized in that: The sampling unit (310) further includes a first driver (314), a first conduit (315), a first connecting tube (316), a first baffle (317), and a first inflatable annular airbag (318); the first driver (314) is connected to both the submersible body (100) and the first connecting tube (316); one end of the first conduit (315) is connected to the air inlet (3111), and the other end of the first conduit (315) is slidably connected to the first connecting tube (316); the first conduit (315) and the first connecting tube (316) are sealed together; the first annular airbag (318) is fixed to the end of the first connecting tube (316) away from the first conduit (315); The first baffle (317) is installed on the first side, and the first connecting tube (316) and the first baffle (317) are slidably connected in the length direction of the box (3121). A portion of the first connecting tube (316) is clamped by the first baffle (317) and the box (3121) to restrict the first connecting tube (316) from moving away from the box (3121). A plurality of the first interfaces (3125) are located on the sliding path of the first annular airbag (318), and the first annular airbag (318) is used to seal the area between the first connecting tube (316) and the corresponding first interface (3125).

8. The fully automatic continuous sampling device for lake water profiles according to any one of claims 5-7, characterized in that: The second side is provided with a plurality of second interfaces (3126) that can be opened and closed independently. The plurality of second interfaces (3126) are respectively matched with the plurality of connection units. The cleaning unit (320) can be connected to at least one second interface (3126).

9. The fully automatic continuous lake water profile sampling device according to claim 8, characterized in that: The cleaning unit (320) includes an openable and closable water tank (321), a second actuator (322), a second conduit (323), a second connecting pipe (324), a second baffle (325), and an inflatable and deflated second annular airbag (326); the second actuator (322) is connected to the submersible body (100), one end of the second conduit (323) is connected to the water tank (321), and the other end of the second conduit (323) is slidably connected to the second connecting pipe (324), with the second conduit (323) and the second connecting pipe (324) forming a sealed fit; the second annular airbag (326) is fixed to the end of the second connecting pipe (324) away from the second conduit (323); The second stop bar (325) is installed on the second side, and the second connecting tube (324) and the second stop bar (325) are slidably connected in the length direction of the box body (3121). A portion of the second connecting tube (324) is clamped by the second stop bar (325) and the box body (3121) to restrict the second connecting tube (324) from moving away from the box body (3121). A plurality of second interfaces (3126) are located on the sliding path of the second annular airbag (326), and the second annular airbag (326) is used to seal the area between the second connecting tube (324) and the corresponding second interface (3126).

10. The fully automated continuous lake water profile sampling device according to claim 1, characterized in that: The fully automatic lake water profile continuous sampling device also includes an image acquisition mechanism (500), which is installed on the submersible body (100) and is used to acquire environmental images around the submersible body (100).

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