Water quality monitoring device

Abstract

The invention relates to the technical field of water quality monitoring, and provides a water quality monitoring device, the water quality monitoring device comprises a detection assembly, a sampling device and a snorkeling device, the detection assembly comprising a release recovery assembly can move on the water surface; the sampling device for collecting a water body sample is detachably arranged on the releasing and recycling assembly; the snorkeling device used for enabling the sampling device to float to the water surface after completing sampling underwater is arranged at one end of the sampling device; wherein the detection assembly is used for releasing the sampling device into water, so that the detection assembly is separated from the sampling device; or when the sampling device completes sampling and floats to the water surface, the sampling device moves to be close to the sampling device and is connected with the sampling device, and then the water body sample in the sampling device is extracted for detection. According to the water quality monitoring device provided by the invention, the sampling device and the detection assembly can be separated, the sampling depth and range are expanded, the adaptability to a complex environment is improved, and the working efficiency of water quality monitoring is improved.

Description

Technical Field

[0001] The present application relates to the technical field of water quality monitoring, and in particular to a water quality monitoring device. Background Art

[0002] Water quality monitoring refers to the process of measuring various physical, chemical and biological parameters in water bodies to assess whether the water quality meets specific standards or uses.

[0003] When water quality monitoring equipment in related technologies collects water samples in deep water areas such as lakes, workers are required to reach designated areas and lower samplers to different depths via towing ropes for sampling. However, the underwater environment is complex and towing ropes can easily get entangled in objects, causing sampling failure. Summary of the invention

[0004] The embodiment of the present application provides a water quality monitoring device, which can improve the technical problem in the related art that the traction rope of the sampler is entangled by objects at the bottom of the water, resulting in sampling failure.

[0005] The present application provides a water quality monitoring device, comprising: A detection component, the detection component is capable of moving on the water surface; the detection component includes a release and recovery component; A sampling device, which is detachably mounted on the release and recovery assembly; the sampling device is used to collect water samples; and A snorkeling device, which is arranged at one end of the sampling device; the snorkeling device is used to make the sampling device closer to the bottom of the water than the sampling device during the diving process, and the sampling device is kept vertical along the direction of gravity, and the sampling device can float to the surface after completing the sampling underwater; Among them, the detection component is used to release the sampling device into the water through the release and recovery component, so that the detection component is separated from the sampling device; or when the sampling device completes sampling and floats to the water surface, it is moved close to the sampling device, connected to the sampling device through the release and recovery component, and the water sample in the sampling device is extracted through the release and recovery component for detection.

[0006] The above technical solutions in the embodiments of the present application have at least the following technical effects: The water quality monitoring device provided in the embodiment of the present application can put the sampling device underwater to separate from the detection component through the release recovery component on the detection component, and the sampling device is kept vertically submerged in the water along the gravity direction through the snorkeling device to perform sampling. After the sampling is completed, the sampling device floats to the water surface through the snorkeling device, and then moves to the sampling device by the detection component and is connected to the sampling device through the release recovery component to complete the recovery of the sampling device. The sampling device can be separated from the detection component, and vertically dives and floats along the gravity direction. By canceling the traction rope between the detection component and the sampling device, the probability of the sampling device being entangled by underwater animals and plants in the water and unable to dive or float is reduced, so that the sampling device is not restricted by the traction rope, and the depth and range of sampling are significantly expanded, and there is no need for operators to go to the water to perform sampling, eliminating the safety hazards of water quality monitoring work, improving adaptability to complex environments, reducing the difficulty of water quality monitoring work, and improving the work efficiency of water quality monitoring.

[0007] In some embodiments, the sampling device includes a plurality of sampling pieces, and the plurality of sampling pieces are connected end to end along the axis direction thereof; one end of a sampling piece located at the end of the sampling device among the plurality of sampling pieces is connected to the snorkeling device; the sampling piece includes: A water storage cylinder, the water storage cylinder having an internal space, a first connection end and a second connection end; the first connection end and the second connection end are respectively arranged at two ends of the water storage cylinder along the axial direction of the water storage cylinder, and the first connection end can be connected to the second connection end of another adjacent water storage cylinder; the side surface of the water storage cylinder is provided with two clamping grooves along the axial direction thereof, and the two clamping grooves are opposite and spaced apart; and a first one-way valve, the first one-way valve being arranged on the side of the water storage cylinder; an output end of the first one-way valve being connected to the internal space; the first one-way valve being used to inject water into the internal space under the action of water pressure; Wherein, the internal space is used to store the collected water samples; the multiple sampling parts are connected end to end along the axis of the sampling parts through the first connecting end and the second connecting end of the water storage cylinder; the clamping groove is used to abut against the release and recovery component through the inner bottom surface of the clamping groove when the sampling device is not separated from the detection component.

[0008] In some embodiments, the release recovery component includes: Two telescopic members, the fixed ends of the two telescopic members are arranged oppositely on one side of the detection component; Two clamping arms, one end of the two clamping arms is arranged on the two telescopic parts in a one-to-one correspondence. The two clamping arms are opposite and spaced apart; and Two electric rollers, the two electric rollers are arranged at the other ends of the two clamping arms in a one-to-one correspondence; the axis of the electric roller is perpendicular to the axis of the sampling device; at least a part of the electric roller can enter the clamping groove and abut against the inner bottom surface of the clamping groove; the two electric rollers are used to abut against the inner bottom surfaces of the two clamping grooves respectively, and the sampling device is moved along its own axis direction by the rotation of the electric rollers; Among them, the two telescopic parts are used to drive the two telescopic arms to be relatively close to each other, so that the two electric rollers are respectively in contact with the inner bottom surfaces of the two clamping grooves to clamp the sampling device, or by driving the two telescopic arms to be relatively away from each other, so that the two electric rollers are separated from the clamping grooves to release the sampling device.

[0009] In some embodiments, the detection component has a plurality of detection spaces, the number of which is equal to the number of the sampling components; the sampling component further comprises a second one-way valve, the second one-way valve is arranged on the side of the water storage cylinder, and the second one-way valve is spaced apart from the first one-way valve; the input end of the second one-way valve is connected to the internal space; the release and recovery component comprises: A butt joint pipe, which is arranged on one side of the detection assembly along a direction perpendicular to the axis of the sampling device; the butt joint pipe is located between the two telescopic members; the butt joint pipe is used for the input end of the butt joint pipe to be detachably connected to the output end of the second one-way valve when the release and recovery assembly clamps the sampling device; and A solenoid valve, wherein the input end of the solenoid valve is connected to the output end of the butt joint tube; the solenoid valve has multiple output ends, and the multiple output ends of the solenoid valve are connected to the multiple detection spaces one by one; the solenoid valve is used to introduce the water samples collected by the multiple sampling members into the multiple detection spaces through the butt joint tube for separate detection.

[0010] In some embodiments, the snorkeling device comprises: A plurality of blades, wherein the blades are connected to one end of the sampling device; an end of the blade away from the sampling device is a first end, and an end of the blade close to the sampling device is a second end; a distance from the first end of the blade to the axis of the sampling device is greater than a distance from the second end of the blade to the axis of the sampling device; and the plurality of blades are spaced apart along the circumference of the sampling device; Wherein, the plurality of blades are used to reduce the speed at which the sampling device dives into the water.

[0011] In some embodiments, the blade is rotatably disposed at one end of the sampling device with a first axis as an axis, and the first axis is perpendicular to the axis of the sampling device; the snorkeling device further includes: A guide cylinder, the guide cylinder is arranged at one end of the sampling device close to the water bottom along the axial direction of the sampling device; a moving space is opened on the guide cylinder along the axial direction of the sampling device; a moving groove is opened on the side wall of the guide cylinder along the axial direction of the sampling device; the moving groove is used to connect the moving space with the outside of the guide cylinder; A movable member, the movable member being movably disposed in the movable space; A plurality of connecting rods, each of which is inserted into the movable groove; one end of each connecting rod is hinged to the movable member; and the other ends of each of the connecting rods are hinged to the first ends of each of the blades in a one-to-one correspondence; a compression expansion member, the compression expansion member being arranged in the moving space, one end of the compression expansion member abutting against the inner wall of the guide cylinder at one end away from the sampling device, and the other end of the compression expansion member abutting against the movable member; the compression expansion member being able to expand or compress along the axial direction of the sampling device; and A floating trigger device, the floating trigger device is arranged at one end of the guide cylinder away from the sampling device; the floating trigger device is connected to the compression expansion member; the floating trigger device is used to trigger the compression expansion member to expand the compression expansion member when the sampling device completes sampling; Among them, the compression expansion member is used to expand to increase the buoyancy so that the sampling device can at least partially protrude from the water surface, and push the movable member along the axial direction of the sampling device. The movable member pulls the first section of the blade toward the axial direction of the sampling device through the connecting rod, thereby making the distance from the first end of the plurality of blades to the axis of the sampling device smaller than the distance from the second end of the blade to the axis of the sampling device.

[0012] In some embodiments, the sampling device is provided with a through hole along its axis, and the through hole is connected to the moving space of the guide cylinder; the water quality monitoring device further includes: A rod, the rod being slidably disposed in the through hole, one end of the rod being connected to an end of the movable member away from the compression and expansion member; The mark rod is used to expand through the compression expansion member to push the movable member toward the mark rod, thereby pushing at least a portion of the mark rod to protrude from the sampling device.

[0013] In some embodiments, the water quality monitoring device further comprises: A mark-finding device, which is disposed on the detection assembly; the mark-finding device is used to find the position of the mark pole; and A control device, wherein the control device is disposed on the detection component; the control device is electrically connected to the mark-finding device and the detection component respectively; the control device is used to control the detection component to move toward the benchmark according to the position of the benchmark detected by the mark-finding device.

[0014] In some embodiments, the end of the pole away from the movable part is coated with orange waterproof material; the marking device comprises: An image acquisition device, the image acquisition device is arranged on the detection component; the image acquisition device is used to acquire a water surface image; and An image processing device, wherein the image acquisition device is arranged on the detection component; the image processing device is electrically connected to the image acquisition device and the control device respectively; the image processing device is used to determine the position of the benchmark according to the acquired water surface image, and send the position data of the benchmark to the control device.

[0015] In some embodiments, the detection component includes: A mobile platform, one end of which is connected to the release and recovery component; A driving member, the driving member is disposed on the mobile platform; the driving member is electrically connected to the control device; the driving member is used to drive the mobile platform to move on the water surface; and The detection mechanism is arranged on a side of the mobile platform away from the bottom of the water; the detection mechanism is used to extract the water sample in the sampling device through the release and recovery component and detect the water sample. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 A schematic diagram of the structure of a water quality monitoring device provided in an embodiment of the present application; Figure 2 A schematic diagram of the structure of the detection component provided in the embodiment of the present application; Figure 3 A schematic diagram of the structure of the sampling device and the snorkeling device provided in the embodiment of the present application during the surfacing process; Figure 4A schematic diagram of the cross-sectional structure of the sampling device, snorkeling device and benchmark provided in the embodiments of the present application.

[0018] Among them, the reference numerals in the figure are: 100. Water quality monitoring device; 10. Detection component; 101. Release and recovery component; 1011. Telescopic member; 1012. Clamping arm; 1013. Electric roller; 1014. Docking tube; 102. Mobile platform; 103. Driving member; 104. Detection mechanism; 20. Sampling device; 201. Sampling member; 2011. Water storage cylinder; 20111. Internal space; 20112. First connecting end; 20113. Second connecting end; 20114. Clamping groove; 2012. First one-way valve; 2013. Second one-way valve; 2014. Through hole; 30. Snorkeling device; 301. Blade; 302. Guide cylinder; 303. Movable member; 304. Connecting rod; 305. Compression and expansion member; 306. Floating trigger device; 40. Marking rod; 50. Marking device; 60. Control device. DETAILED DESCRIPTION

[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0021] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0022] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0024] In this application, "and / or" is only a description of the association relationship of associated objects, indicating that there can be three relationships; for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0025] It should be noted that, in the present application, words such as "in some embodiments", "exemplarily", "for example", etc. are used to indicate examples, illustrations or descriptions. Any embodiment or design described in the present application as "in some embodiments", "exemplarily", "for example" should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "in some embodiments", "exemplarily", "for example", etc. is intended to present related concepts in a concrete way, meaning that specific features, structures or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the above words in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0026] Water quality monitoring refers to the process of measuring various physical, chemical and biological parameters in water bodies to assess whether the water quality meets specific standards or uses.

[0027] When water quality monitoring equipment in related technologies collects water samples in deep water areas such as lakes, workers are required to reach designated areas and lower samplers to different depths via towing ropes for sampling. However, the underwater environment is complex and towing ropes can easily get entangled in objects, causing sampling failure.

[0028] Based on this, in order to improve the problem in the related art that the traction rope of the sampler is entangled by objects at the bottom of the water, resulting in sampling failure, the embodiment of the present application provides the following solution.

[0029] Please also read Figure 1The embodiment of the present application provides a water quality monitoring device 100, which includes a detection component 10, a sampling device 20 and a snorkeling device 30. The detection component 10 can move on the water surface; the detection component 10 includes a release recovery component 101; the sampling device 20 is detachably arranged on the release recovery component 101; the sampling device 20 is used to collect water samples; the snorkeling device 30 is arranged at one end of the sampling device 20; the snorkeling device 30 is used to make the snorkeling device 30 closer to the bottom of the water relative to the sampling device 20, and the sampling device 20 is During the diving process, it can remain vertical along the direction of gravity, and the sampling device 20 can float to the surface after completing sampling underwater; wherein, the detection component 10 is used to release the sampling device 20 into the water by releasing the recovery component 101, so that the detection component 10 is separated from the sampling device 20; or when the sampling device 20 completes sampling and floats to the surface of the water, it moves close to the sampling device 20, connects to the sampling device 20 by releasing the recovery component 101, and extracts the water sample in the sampling device 20 by releasing the recovery component 101 for detection.

[0030] It can be understood that the detection component 10 is a component that can move on the water surface and detect water samples. The detection component 10 can include a floating platform, a water quality meter and a release and recovery device. The floating platform can be a remote-controlled boat, or an air cushion with a steering device and a propeller driven by a motor at the bottom, but it is not limited to this. The release and recovery device is a device used to disconnect or connect the sampling device 20 with the detection component 10. The release and recovery device can use a manipulator to pick up and put down the sampling device 20, or it can use an electric first magnet, by setting a corresponding first magnet on the sampling device 20, and by changing the current direction of the electric first magnet to adsorb or repel the sampling device 20. The sampling device 20 is a device that can be separated from the detection component 10 for sampling. For example, it can be a bottle body with a one-way valve at the input end, and the water body is injected into the bottle body through the one-way valve by the underwater water pressure to complete the sampling. It can also be a bottle body with an exhaust air pump and a water inlet, and the gas in the bottle body is discharged by the exhaust air pump so that the water body can enter the bottle body through the water inlet, but it is not limited to this. The snorkeling device 30 is a device used to enable the sampling device 20 to vertically dive into the water along the direction of gravity, and to enable the sampling device 20 to float to the surface of the water after the sampling device 20 completes sampling. For example, the snorkeling device 30 can use an electric propeller, and by controlling the rotation direction of the electric propeller, the sampling device 20 can dive underwater or float to the surface of the water; or a counterweight block can be provided at one end of the sampling device 20 so that the sampling device 20 can dive, and a compressed air bag can be provided. After the sampling device 20 is completed, the compressed air bag is inflated to increase the weight and make the sampling device 20 float, but it is not limited to this.

[0031] From the above, it can be seen that the water quality monitoring device 100 provided in the embodiment of the present application places the sampling device 20 underwater to separate it from the detection component 10 through the release and recovery component 101 on the detection component 10, and the sampling device 20 is kept vertically submerged underwater along the direction of gravity through the snorkeling device 30 to perform sampling. After the sampling is completed, the sampling device 20 floats to the water surface through the snorkeling device 30, and then moves from the detection component 10 to the sampling device 20 and is connected to the sampling device 20 through the release and recovery component 101, thereby completing the recovery of the sampling device 20. The sampling device 20 can be separated from the detection component 10, and can dive or float vertically along the direction of gravity. By eliminating the traction rope between the detection component 10 and the sampling device 20, the probability of the sampling device 20 being entangled by underwater animals and plants and unable to dive or float is reduced, so that the sampling device 20 is not restricted by the traction rope, which significantly expands the sampling depth and range. There is no need for operators to go to the surface for sampling, which eliminates the safety hazards of water quality monitoring work, improves adaptability to complex environments, reduces the difficulty of water quality monitoring work, and improves the work efficiency of water quality monitoring.

[0032] In some embodiments, please refer to 1. Figure 3 and Figure 4 The sampling device 20 includes a plurality of sampling members 201, and the plurality of sampling members 201 are connected end to end along the axis direction thereof; one end of a sampling member 201 located at the end of the sampling device 20 among the plurality of sampling members 201 is connected to the snorkeling device 30; the sampling member 201 includes a water storage cylinder 2011 and a first one-way valve 2012, the water storage cylinder 2011 has an internal space 20111, a first connecting end 20112 and a second connecting end 20113; the first connecting end 20112 and the second connecting end 20113 are respectively arranged at the two ends of the water storage cylinder 2011 along the axis direction of the water storage cylinder 2011, and the first connecting end 20112 can be connected to the second connecting end 20113 of another adjacent water storage cylinder 2011; the side of the water storage cylinder 2011 is along the axis direction thereof Two clamping grooves 20114 are provided, and the two clamping grooves 20114 are opposite and spaced apart; a first one-way valve 2012 is arranged on the side of the water storage cylinder 2011; the output end of the first one-way valve 2012 is connected to the internal space 20111; the first one-way valve 2012 is used to inject water into the internal space 20111 under the action of water pressure; wherein, the internal space 20111 is used to store the collected water samples; a plurality of sampling members 201 are connected end to end along the axis of the sampling member 201 through the first connecting end 20112 and the second connecting end 20113 of the water storage cylinder 2011; the clamping groove 20114 is used to abut against the release recovery component 101 through the inner bottom surface of the clamping groove 20114 when the sampling device 20 is not separated from the detection component 10.

[0033] It can be understood that the water storage cylinder 2011 is a container for storing collected water samples and is subjected to a certain water pressure. The cylinder body can be made of aluminum or polyvinyl chloride, but is not limited thereto. The first one-way valve 2012 is a component for allowing fluid to enter the water storage cylinder 2011 in only one direction. By adjusting the pressure that the first one-way valve 2012 can pass through, the sampling member 201 reaches a predetermined water depth, and the water can enter the water storage cylinder 2011 under the action of the water pressure. The first connecting end 20112 and the second connecting end 20113 are parts used to connect the two water storage cylinders 2011 end to end along the axial direction. For example, the first connecting end 20112 of the water storage cylinder 2011 can be welded together with the second connecting end 20113 of the other water storage cylinder 2011 by welding, or an external thread can be set at the first connecting end 20112 of the water storage cylinder 2011, and a cylindrical structure with an internal thread can be set at the second connecting end 20113 of the water storage cylinder 2011. The external thread of the first connecting end 20112 and the internal thread of the second connecting end 20113 can cooperate, so that the first connecting end 20112 of the water storage cylinder 2011 can be connected to the second connecting end 20113 of the other water storage cylinder 2011, but it is not limited to this.

[0034] In this way, multiple sampling components 201 are connected end to end along the axis direction of the water storage cylinder 2011 through the first connecting end 20112 and the second connecting end 20113; the pressure allowed to pass through the first one-way valve 2012 is adjusted to control the water depth of the sampling component 201 for sampling; when the sampling device 20 is not separated from the detection component 10, it is abutted with the release recovery component 101 through the clamping groove 20114, which can make the connection between the release recovery component 101 and the sampling device 20 more reliable and less likely to be separated due to sliding, and can collect water samples from multiple water depth areas at one time, thereby improving sampling efficiency, reducing sampling costs, reducing the area of ​​the sampling device 20 projected along its own direction, making the sampling device 20 stable in the process of diving or floating, reducing interference with the water environment, and making the sampling results more accurate and reliable.

[0035] In some embodiments, see Figure 1 to Figure 2The release and recovery component 101 includes two telescopic members 1011, two clamping arms 1012 and two electric rollers 1013. The fixed ends of the two telescopic members 1011 are relatively arranged on one side of the detection component 10; one end of the two clamping arms 1012 is correspondingly arranged at the movable ends of the two telescopic members 1011; the two clamping arms 1012 are opposite and spaced apart; the two electric rollers 1013 are correspondingly arranged at the other ends of the two clamping arms 1012; the axis of the electric roller 1013 is perpendicular to the axis of the sampling device 20; at least a part of the electric roller 1013 can enter the clamping groove 20114 , and abut against the inner bottom surface of the clamping groove 20114; the two electric rollers 1013 are used to abut against the inner bottom surfaces of the two clamping grooves 20114 respectively, and the sampling device 20 is moved along its own axial direction through the rotation of the electric rollers 1013; wherein, the two telescopic parts 1011 are used to drive the two telescopic arms to be relatively close to each other, so that the two electric rollers 1013 are respectively abutted against the inner bottom surfaces of the two clamping grooves 20114 to clamp the sampling device 20, or by driving the two telescopic arms to be relatively away from each other, the two electric rollers 1013 are separated from the clamping groove 20114 to release the sampling device 20.

[0036] It can be understood that the telescopic member 1011 is a component used to provide power to clamp the sampling device 20. For example, an electric telescopic rod can be used to drive the rod body to extend and retract by controlling the rotation direction of the motor, or a cylinder can be used to control the air pressure of the two air chambers in the cylinder to move the piston, thereby driving the piston rod to extend or retract to the cylinder body, but it is not limited to this. The clamping arm 1012 is a component with sufficient rigidity to clamp the sampling device 20. For example, a copper bar or a stainless steel rod can be used, but it is not limited to this. The electric roller 1013 is a component used to clamp the sampling device 20 and move the sampling device 20 along its own axial direction by rotating. The surface of the electric roller 1013 can generate sufficient friction when it abuts against the inner bottom surface of the clamping groove 20114. For example, a rubber roller can be used, or a plurality of rubber protrusions can be set on the curved surface of the roller, but it is not limited to this.

[0037] In this way, the release and recovery device drives the two clamping arms 1012 to approach or move away through the two telescopic members 1011, so that the two electric rollers 1013 can approach each other to respectively abut the inner bottom surfaces of the two clamping grooves 20114 of the sampling device 20, thereby clamping the sampling device 20, and the sampling device 20 is moved along its own axis direction to leave the water surface through the rotation of the two electric rollers 1013, or the two electric rollers 1013 are moved away from each other through the telescopic arms to leave the sampling device 20, or the sampling device 20 is moved along its own axis direction to leave the release and recovery placement and enter the water through the rotation of the electric rollers 1013. The release and recovery device abuts against the clamping groove 20114 of the sampling device 20, which is conducive to the accuracy and stability of the docking between the release and recovery device and the sampling device 20, and the sampling device 20 is separated from the water surface by the electric rollers 1013, so that the collected water samples can be protected in time, which is conducive to ensuring the accuracy and reliability of the monitoring results.

[0038] In some embodiments, see Figure 1 , Figure 3 and Figure 4 The detection component 10 has a plurality of detection spaces, the number of which is equal to the number of sampling components 201; the sampling component 201 also includes a second one-way valve 2013, which is arranged on the side of the water storage cylinder 2011, and the second one-way valve 2013 is spaced apart from the first one-way valve 2012; the input end of the second one-way valve 2013 is connected to the internal space 20111; the release and recovery component 101 includes a butt joint 1014 and a solenoid valve, and the butt joint 1014 is arranged on one side of the detection component 10 along a direction perpendicular to the axis of the sampling device 20; the butt joint 1014 is located between the two telescopic parts 1011; the docking tube 1014 is used to release the recovery component 101 to clamp the sampling device 20, and the input end of the docking tube 1014 can be detachably connected to the output end of the second one-way valve 2013; the input end of the solenoid valve is connected to the output end of the docking tube 1014; the solenoid valve has multiple output ends, and the multiple output ends of the solenoid valve are connected to multiple detection spaces one by one; the solenoid valve is used to introduce water samples collected by multiple sampling parts 201 into multiple detection spaces through the docking tube 1014 for separate detection.

[0039] It can be understood that the detection assembly 10 detects different water samples in different sampling parts 201 through multiple detection spaces. The second one-way valve 2013 is a component used to allow the fluid inside the water storage barrel to be discharged only in one direction to the outside of the water storage barrel 2011. The butt joint 1014 is a component used to dock with the sampling part 201 to extract the water sample in the sampling part 201. The butt joint 1014 has sufficient rigidity to make the output end face a fixed direction for easy docking. For example, the butt joint 1014 can be a copper tube or a hard plastic tube, but is not limited thereto. The solenoid valve is a component that can output water samples to multiple pipes in sequence through electrical control through the docking tube 1014, and then output them to multiple detection spaces respectively. A data processing component can be set on the detection component 10, and the data processing component is electrically connected to the solenoid valve. A sensor is set at the input end of the docking tube 1014, and the sensor is electrically connected to the data processing component. When the sensor detects a change in the input end of the docking tube 1014, it sends a signal to the data processing component, and the data processing component sends a reversing signal to the solenoid valve, so that the water sample entering the docking tube 1014 enters different detection spaces. The data processing component can use an MCU, or a data processing chip, but is not limited to this. The sensor can use a flow sensor, or a pressure sensor, but is not limited to this.

[0040] With such a configuration, the sampling member 201 discharges the internal air underwater or discharges the collected water sample above water through the second one-way valve 2013. The release recovery component 101 extracts the water sample in the sampling member 201 through the docking tube 1014, and transports the water samples in different sampling members 201 to different detection spaces through the electromagnetic valve, and the water samples in different detection spaces are respectively detected by the detection component 10.

[0041] In some embodiments, see 1. Figure 3 and Figure 4 The snorkeling device 30 includes a plurality of blades 301, and the blades 301 are connected to one end of the sampling device 20; the end of the blade 301 away from the sampling device 20 is the first end, and the end of the blade 301 close to the sampling device 20 is the second end; the distance from the first end of the blade 301 to the axis of the sampling device 20 is greater than the distance from the second end of the blade 301 to the axis of the sampling device 20; the plurality of blades 301 are arranged at intervals along the circumference of the sampling device 20; wherein the plurality of blades 301 are used to reduce the speed at which the sampling device 20 dives into the water.

[0042] It can be understood that the blades 301 are used to unfold when the sampling device 20 dives to increase the area of ​​contact with water along the axial direction of the sampling device 20, thereby reducing the speed of the sampling device 20 diving in the water, and the total weight of multiple blades 301 is greater than the total weight of the sampling device 20, so that when the sampling device 20 dives, the snorkeling device 30 can be located below the sampling device 20, and the sampling device 20 can remain vertical along the direction of gravity. The blades 301 can be a rectangular sheet structure or a triangular sheet structure. The blades 301 can be made of stainless steel or tin-copper alloy material, but are not limited to this.

[0043] With such an arrangement, the speed at which the sampling device 20 dives into the water is reduced by the blades 301, thereby reducing the impact of the sampling device 20 on the stability of the water body during its dive, allowing the sampling device 20 to have sufficient time to take samples, thereby improving the efficiency of the sampling work, and improving the representativeness of the water body samples, which is conducive to fully detecting the water body, and can avoid agitation of the water body during sampling overshoot, reduce interference with the sampling area, enhance the accuracy of the water quality monitoring results, and reduce damage to the protection of the water body ecology.

[0044] Optionally, in some embodiments, see Figure 1 , Figure 3 and Figure 4, the blade 301 is rotatably arranged at one end of the sampling device 20 with the first axis as the axis, and the first axis is perpendicular to the axis of the sampling device 20; the snorkeling device 30 also includes a guide cylinder 302, a movable part 303, a plurality of connecting rods 304, a compression expansion part 305 and a floating trigger device 306, the guide cylinder 302 is arranged at the end of the sampling device 20 close to the bottom of the water along the axis direction of the sampling device 20; a moving space is opened on the guide cylinder 302 along the axis direction of the sampling device 20; a moving groove is opened on the side wall of the guide cylinder 302 along the axis direction of the sampling device 20; the moving groove is used to connect the moving space with the outside of the guide cylinder 302; the movable part 303 is movably arranged in the moving space; the connecting rod 304 is inserted in the moving groove; one end of the connecting rod 304 is hinged to the movable part 303; the other ends of the plurality of connecting rods 304 are hinged to the first ends of the plurality of blades 301 one by one; the compression expansion part 305 is arranged in the moving space, and one end of the compression expansion part 305 abuts The other end of the compression expansion member 305 abuts against the movable member 303 on the inner wall of the guide cylinder 302 away from the sampling device 20; the compression expansion member 305 can expand or compress along the axial direction of the sampling device 20; the floating trigger device 306 is arranged at the end of the guide cylinder 302 away from the sampling device 20; the floating trigger device 306 is connected to the compression expansion member 305; the floating trigger device 306 is used to trigger the compression expansion member 305 to expand the compression expansion member 305 when the sampling device 20 completes sampling; wherein, the compression expansion member 305 is used to expand to increase the buoyancy so that the sampling device 20 can at least partially protrude from the water surface, and push the movable member 303 along the axial direction of the sampling device 20, and the movable member 303 pulls the first section of the blade 301 toward the axial direction of the sampling device 20 through the connecting rod 304, thereby making the distance from the first end of the plurality of blades 301 to the axial direction of the sampling device 20 smaller than the distance from the second end of the blade 301 to the axial direction of the sampling device 20.

[0045] It can be understood that the guide cylinder 302 is a hollow cylindrical structure, which is used to limit the moving direction and range of the movable member 303. The connecting rod 304 is used to connect the movable member 303 and the first end of the blade 301, so that the blade 301 can rotate with the movement of the movable member 303. When the movable member 303 moves upward along the moving space, the multiple blades 301 can be retracted to the axis of the sampling device 20. The compression expansion member 305 is in a compressed state when diving. When the sampling member 201 completes sampling, it can expand to increase the buoyancy. The buoyancy provided by the compression expansion member 305 after expansion is greater than the total weight of the sampling device 20 and the snorkeling device 30, so that the sampling device 20 can float up and push the movable member 303 to retract the multiple blades 301 to the axis of the sampling device 20. For example, an air bag including a gas storage bottle can be used, one end of the air bag abuts the movable member 303, and compressed gas is injected into the gas storage bottle. When the gas in the gas storage bottle is filled with compressed gas, the compressed gas is released. A switch is set at the output end. When the switch is triggered, the gas cylinder injects the compressed gas inside into the airbag, causing the airbag to expand along the guide tube 302 to push the movable part 303; or a cylinder connected to a gas cylinder can be used, the gas cylinder is connected to the air chamber of the cylinder away from the sampling device 20, a switch is set at the connection between the gas cylinder and the cylinder, the piston rod of the cylinder abuts against the movable part 303, when the switch is triggered, the compressed gas enters the air chamber of the cylinder away from the sampling device 20, pushes the piston and the piston rod, and then pushes the movable part 303, but is not limited to this. The floating trigger device 306 is a device used to trigger the compression expansion member 305 to expand the compression expansion member 305 when the sampling device 20 completes sampling. For example, a hollow float and an infrared sensor can be set in the sampling member 201 that allows the maximum pressure to pass through the first one-way valve 2012. The infrared sensor is set on the side of the sampling member 201 away from the snorkeling device 30. The floating trigger device 306 includes a signal processing device. The compressed gas of the compression expansion member 305 and the air bag are connected with an electric control switch. The signal processing device is electrically connected to the infrared sensor and the electric control switch respectively. When the infrared sensor detects that the hollow float in the sampling member 201 floats due to the completion of sampling, the infrared sensor sends a signal to the signal processing device The signal processing device sends a trigger signal to the electric switch to trigger the electric switch, thereby allowing the compressed gas to enter the airbag and expand. Alternatively, a water pressure sensor can be set in the sampling component 201 with the highest pressure allowed to pass through the first one-way valve 2012. The floating trigger device 306 includes a signal processing device. The compressed gas of the compression and expansion component 305 and the connecting outlet of the airbag are provided with an electric switch. The signal processing device is electrically connected to the water pressure sensor and the electric switch respectively. When the water pressure sensor detects that the water pressure in the sampling component 201 reaches the preset water pressure, a signal is sent to the signal processing device. The signal processing device sends a trigger signal to the electric switch to trigger the electric switch, thereby allowing the compressed gas to enter the airbag and expand, but is not limited to this.

[0046] In this arrangement, the floating trigger device 306 triggers the compression expansion member 305 when the sampling device 20 completes sampling, so that the compression expansion member 305 expands to provide buoyancy that can make the sampling device 20 and the snorkeling device 30 float, and pushes the movable member 303 toward the sampling device 20 along the moving space of the guide cylinder 302, so that the multiple blades 301 are gathered toward the axis of the sampling device 20. In this way, the sampling device 20 can automatically float after completing the sampling, without manual control, and the floating resistance is reduced, the floating speed is increased, which can reduce manual intervention, improve the automation of sampling work, and thus improve the efficiency of sampling work, and can avoid the agitation of the water body during sampling overshoot, reduce interference with the sampling area, and reduce damage to the protection of the water ecology.

[0047] In some embodiments, see Figure 1 , Figure 3 and Figure 4 The sampling device 20 is provided with a through hole 2014 along its own axis, and the through hole 2014 is connected to the moving space of the guide cylinder 302; the water quality monitoring device 100 also includes a benchmark 40, which is slidably arranged in the through hole 2014, and one end of the benchmark 40 is connected to an end of the movable part 303 away from the compression expansion part 305; wherein the benchmark 40 is used to expand through the compression expansion part 305 to push the movable part 303 toward the benchmark 40, thereby pushing at least a portion of the benchmark 40 to protrude from the sampling device 20.

[0048] It can be understood that the through hole 2014 is provided on each sampling member 201, and the through hole 2014 is connected to the moving space of the guide cylinder 302, but not to the internal space 20111 of the sampling member 201. The reference rod 40 is a device for making the sampling device 20 easy to be found. For example, a conspicuous color such as red or orange can be painted on the end of the reference rod 40 away from the movable member 303, or an identification plate can be provided on the end of the reference rod 40 away from the movable member 303, but the present invention is not limited thereto.

[0049] With such arrangement, before the sampling device 20 is released, the pole 40 can be pushed toward the movable part 303 to unfold the multiple blades 301. When the sampling device 20 floats up, the compression expansion part 305 expands to push the movable part 303 toward the pole 40, thereby pushing at least a portion of the pole 40 to protrude from the sampling device 20, so that the sampling device 20 can be easily found when it floats to the water surface, thereby reducing the difficulty of the detection component 10 to recover the sampling device 20, improving the efficiency of the recovery of the sampling device 20, and thereby improving the work efficiency of water quality monitoring.

[0050] In some embodiments, see Figure 1The water quality monitoring device 100 also includes a mark-finding device 50 and a control device 60. The mark-finding device 50 is arranged on the detection component 10; the mark-finding device 50 is used to find the position of the mark pole 40; the control device 60 is arranged on the detection component 10; the control device 60 is electrically connected to the mark-finding device 50 and the detection component 10 respectively; the control device 60 is used to control the detection component 10 to move toward the mark pole 40 according to the position of the mark pole 40 detected by the mark-finding device 50.

[0051] It can be understood that the marker-finding device 50 is a device that can determine the position of the marker 40. The marker 40 can be coated with a highly visible reflective material. The marker-finding device 50 uses an image acquisition device. The control device 60 is provided with a device that can process and analyze images. The marker-finding device 50 collects images of the surrounding environment. The control device 60 determines the position of the marker 40 based on the water surface environment image, and then controls the detection component 10 to move toward the marker 40; or a small GPS locator can be set on the marker 40. The control device 60 includes a GPS receiver, and the position of the GPS locator is determined by the GPS receiver, and then the detection component 10 is controlled to move toward the marker 40, but it is not limited to this.

[0052] With such arrangement, the position of the marker 40 is found by the marker-finding device 50, and the detection component 10 is controlled to approach the marker 40 by the control device 60, thereby completing the recovery of the sampling device 20 without the need for manual search and manipulation, thereby reducing manual workload, reducing the risks that may be caused by manual entry into the water area for recovery, reducing the difficulty of recovering the sampling device 20, and improving the working efficiency of recovering the sampling device 20, thereby improving the working efficiency of water quality monitoring.

[0053] In some embodiments, see Figure 1 and Figure 4 , one end of the marker 40 away from the movable part 303 is coated with orange waterproof material; the marker-seeking device 50 includes an image acquisition device and an image processing device, the image acquisition device is arranged on the detection component 10; the image acquisition device is used to acquire water surface images; the image acquisition device is arranged on the detection component 10; the image processing device is electrically connected to the image acquisition device and the control device 60 respectively; the image processing device is used to determine the position of the marker 40 according to the acquired water surface image, and send the position data of the marker 40 to the control device 60.

[0054] It can be understood that orange is a color with high visibility, which can form a strong contrast with the color of the water surface. The orange waterproof material coated on the end of the marker 40 away from the movable part 303 can improve the visibility and uniqueness of the marker 40. The image acquisition device is a device for acquiring water surface images, for example, a camera can be used, or a photoelectric sensor and an optical filter can be used, but it is not limited to this. The image processing device is used to process the image acquired by the image acquisition device to find the image of the marker 40 in the image and measure the direction and distance of the marker 40. For example, the image processing device can use a computer equipped with AI object recognition technology to identify and find the image of the marker 40 through AI and calculate the distance of the marker 40; or a computer with image processing technology can be used to match the color and shape of the marker 40 in the water surface environment image to determine the direction of the marker 40, and judge the distance of the marker 40 according to the size of the image of the marker 40, but it is not limited to this. The control device 60 is a device for controlling the movement of the detection component 10 according to the position data of the benchmark 40 obtained by the image processing device. The control device 60 may include an MCU, a data processing chip, etc., but is not limited thereto.

[0055] Optionally, a plurality of first magnets are provided at the input end of the docking tube 1014, the plurality of first magnets are arranged at circumferential intervals along the input end of the docking tube 1014, the magnetic pole directions of the plurality of first magnets are arranged along the axial direction of the input end of the docking tube 1014, and the magnetic pole directions of the plurality of first magnets are the same; a plurality of second magnets are provided at the output end of the second one-way valve 2013, the plurality of second magnets are arranged at circumferential intervals along the input end of the second one-way valve 2013, the magnetic pole directions of the plurality of second magnets are arranged along the axial direction of the input end of the docking tube 1014, and the magnetic pole directions of the plurality of second magnets are the same; the plurality of first magnets can attract the plurality of second magnets in a one-to-one correspondence; the plurality of first magnets are used to attract the plurality of second magnets in a one-to-one correspondence, so that when the docking tube 1014 and the second one-way valve 2013 are in abutment, the axis of the docking tube 1014 and the axis of the second one-way valve 2013 are collinear.

[0056] In this way, an orange waterproof material is coated on one end of the pole 40 away from the movable part 303, and an image acquisition device is used to collect a water surface environment image, and an image processing device is used to find the pole 40 in the water surface environment image, and the direction and distance of the pole 40 are calculated, and the direction and distance data of the pole 40 are sent to the control device 60, and the control device 60 controls the detection component 10 to move toward the pole 40. When the detection component 10 approaches the pole 40 to a preset distance, the multiple first magnets on the docking pipe 1014 and the multiple second magnets of the second one-way valve 2013 attract each other, so that the docking pipe 1014 can be coaxially docked with the second one-way valve 2013. The pole 40 is set to a unique color in the environment, so that the pole 40 is easy to find, the difficulty of recovering water samples is reduced, the manual workload is reduced, and the risks that may be caused by manual entry into the water area for recovery are reduced. The first magnet and the second magnet can reduce the difficulty of connecting the detection component 10 with the sampling device 20, improve the stability, accuracy and speed of docking the detection component 10 with the sampling device 20, and improve the work efficiency of water quality monitoring.

[0057] In some embodiments, see Figure 1 The detection component 10 includes a mobile platform 102, a driving member 103 and a detection mechanism 104. One end of the mobile platform 102 is connected to a release and recovery component 101; the driving member 103 is arranged on the mobile platform 102; the driving member 103 is electrically connected to the control device 60; the driving member 103 is used to drive the mobile platform 102 to move on the water surface; the detection mechanism 104 is arranged on the side of the mobile platform 102 away from the bottom of the water; the detection mechanism 104 is used to extract the water sample in the sampling device 20 through the release and recovery component 101 and detect the water sample.

[0058] It can be understood that the mobile platform 102 is a component used to carry other components and enable other components to float on the water surface, such as a foam board or an air cushion, but not limited to this. The driving member 103 is a component used to provide power for the mobile platform 102 to move on the water surface and control the direction. For example, the driving member 103 may include a motor, a paddle wheel and an electric rudder. The paddle wheel is set on both sides of the mobile platform 102, and part of the paddle wheel is located underwater. The power output end of the motor is connected to the paddle wheel so that the paddle wheel can rotate to paddle water, thereby enabling the mobile platform 102 to move forward, and then the electric rudder set at the bottom of the mobile platform 102 controls the forward direction; or it may include multiple propellers, which are respectively set on both sides and the rear side of the mobile platform 102. By controlling the rotation speed of the multiple propellers respectively, the mobile platform 102 is pushed forward and the forward direction is changed, but not limited to this. The detection mechanism 104 is a mechanism for detecting water samples, which can measure the pH, dissolved oxygen content, organic matter content, heavy metal content and other data of the water samples.

[0059] With such an arrangement, the mobile platform 102 can move on the water surface through the driving member 103, and is equipped with a detection mechanism 104. When the sampling device 20 completes sampling and floats to the water surface, the water sample can be extracted and detected in a short time, and can quickly respond to changes in water quality, and issue effective and timely warnings for abnormal water quality, thereby reducing the impact of physical, chemical or biological changes that may occur during storage and transportation on the sample, thereby improving the accuracy of the test results and improving the efficiency of water quality monitoring.

[0060] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A water quality monitoring device, characterized in that: include: A detection component, the detection component is capable of moving on the water surface; the detection component includes a release and recovery component; A sampling device, which is detachably arranged on the release and recovery component; the sampling device is used to collect water samples; as well as A snorkeling device, which is arranged at one end of the sampling device; the snorkeling device is used to make the sampling device closer to the bottom of the water relative to the sampling device during the diving process, and to keep the sampling device vertical along the direction of gravity, and to enable the sampling device to float to the surface after completing sampling underwater; Among them, the detection component is used to release the sampling device into the water through the release and recovery component, so that the detection component is separated from the sampling device; or when the sampling device completes sampling and floats to the water surface, it is moved close to the sampling device, connected to the sampling device through the release and recovery component, and the water sample in the sampling device is extracted through the release and recovery component for detection.

2. The water quality monitoring device according to claim 1, characterized in that: The sampling device comprises a plurality of sampling parts, and the plurality of sampling parts are connected end to end along the axis direction thereof; one end of a sampling part located at the end of the sampling device among the plurality of sampling parts is connected to the snorkeling device; The sampling piece comprises: A water storage cylinder, the water storage cylinder having an internal space, a first connection end and a second connection end; the first connection end and the second connection end are respectively arranged at two ends of the water storage cylinder along the axial direction of the water storage cylinder, and the first connection end can be connected to the second connection end of another adjacent water storage cylinder; the side surface of the water storage cylinder is provided with two clamping grooves along the axial direction thereof, and the two clamping grooves are opposite and spaced apart; and a first one-way valve, the first one-way valve being arranged on the side of the water storage cylinder; an output end of the first one-way valve being connected to the internal space; the first one-way valve being used to inject water into the internal space under the action of water pressure; Wherein, the internal space is used to store the collected water samples; the multiple sampling parts are connected end to end along the axis of the sampling parts through the first connecting end and the second connecting end of the water storage cylinder; the clamping groove is used to abut against the release and recovery component through the inner bottom surface of the clamping groove when the sampling device is not separated from the detection component.

3. The water quality monitoring device according to claim 2, characterized in that: The release and recovery component comprises: Two telescopic members, the fixed ends of the two telescopic members are arranged oppositely on one side of the detection component; Two clamping arms, one end of the two clamping arms is arranged on the two telescopic parts in a one-to-one correspondence. The two clamping arms are opposite and spaced apart; and Two electric rollers, the two electric rollers are arranged at the other ends of the two clamping arms in a one-to-one correspondence; the axis of the electric roller is perpendicular to the axis of the sampling device; at least a part of the electric roller can enter the clamping groove and abut against the inner bottom surface of the clamping groove; the two electric rollers are used to abut against the inner bottom surfaces of the two clamping grooves respectively, and the sampling device is moved along its own axis direction by the rotation of the electric rollers; Among them, the two telescopic parts are used to drive the two telescopic arms to be relatively close to each other, so that the two electric rollers are respectively in contact with the inner bottom surfaces of the two clamping grooves to clamp the sampling device, or by driving the two telescopic arms to be relatively away from each other, so that the two electric rollers are separated from the clamping grooves to release the sampling device.

4. The water quality monitoring device according to claim 3, characterized in that: The detection component has a plurality of detection spaces, the number of which is equal to the number of the sampling components; the sampling component further comprises a second one-way valve, the second one-way valve is arranged on the side of the water storage cylinder, and the second one-way valve is spaced apart from the first one-way valve; the input end of the second one-way valve is connected to the internal space; the release and recovery component comprises: A butt joint pipe, which is arranged on one side of the detection assembly along a direction perpendicular to the axis of the sampling device; the butt joint pipe is located between the two telescopic members; the butt joint pipe is used for the input end of the butt joint pipe to be detachably connected to the output end of the second one-way valve when the release and recovery assembly clamps the sampling device; and A solenoid valve, wherein the input end of the solenoid valve is connected to the output end of the butt joint tube; the solenoid valve has multiple output ends, and the multiple output ends of the solenoid valve are connected to the multiple detection spaces one by one; the solenoid valve is used to introduce the water samples collected by the multiple sampling members into the multiple detection spaces through the butt joint tube for separate detection.

5. The water quality monitoring device according to claim 1 or 2, characterized in that: The snorkeling device comprises: A plurality of blades, wherein the blades are connected to one end of the sampling device; an end of the blade away from the sampling device is a first end, and an end of the blade close to the sampling device is a second end; a distance from the first end of the blade to the axis of the sampling device is greater than a distance from the second end of the blade to the axis of the sampling device; and the plurality of blades are spaced apart along the circumference of the sampling device; Wherein, the plurality of blades are used to reduce the speed at which the sampling device dives into the water.

6. The water quality monitoring device according to claim 5, characterized in that: The blade is rotatably arranged at one end of the sampling device with a first axis as an axis, and the first axis is perpendicular to the axis of the sampling device; the snorkeling device also includes: A guide cylinder, the guide cylinder is arranged at one end of the sampling device close to the water bottom along the axial direction of the sampling device; a moving space is opened on the guide cylinder along the axial direction of the sampling device; a moving groove is opened on the side wall of the guide cylinder along the axial direction of the sampling device; the moving groove is used to connect the moving space with the outside of the guide cylinder; A movable member, the movable member being movably disposed in the movable space; A plurality of connecting rods, each of which is inserted into the movable groove; one end of each connecting rod is hinged to the movable member; and the other ends of each of the connecting rods are hinged to the first ends of each of the blades in a one-to-one correspondence; a compression expansion member, the compression expansion member being arranged in the moving space, one end of the compression expansion member abutting against the inner wall of the guide cylinder at one end away from the sampling device, and the other end of the compression expansion member abutting against the movable member; the compression expansion member being able to expand or compress along the axial direction of the sampling device; and A floating trigger device, the floating trigger device is arranged at one end of the guide cylinder away from the sampling device; the floating trigger device is connected to the compression expansion member; the floating trigger device is used to trigger the compression expansion member to expand the compression expansion member when the sampling device completes sampling; Among them, the compression expansion member is used to expand to increase the buoyancy so that the sampling device can at least partially protrude from the water surface, and push the movable member along the axial direction of the sampling device. The movable member pulls the first section of the blade toward the axial direction of the sampling device through the connecting rod, thereby making the distance from the first end of the plurality of blades to the axis of the sampling device smaller than the distance from the second end of the blade to the axis of the sampling device.

7. The water quality monitoring device according to claim 6, characterized in that: The sampling device is provided with a through hole along its axis, and the through hole is connected to the moving space of the guide cylinder; the water quality monitoring device also includes: A rod, the rod being slidably disposed in the through hole, one end of the rod being connected to an end of the movable member away from the compression and expansion member; The mark rod is used to expand through the compression expansion member to push the movable member toward the mark rod, thereby pushing at least a portion of the mark rod to protrude from the sampling device.

8. The water quality monitoring device according to claim 7, characterized in that: Also includes: A mark-finding device, the mark-finding device is arranged on the detection component; The marker-finding device is used to find the position of the marker; as well as A control device, wherein the control device is disposed on the detection component; the control device is electrically connected to the mark-finding device and the detection component respectively; the control device is used to control the detection component to move toward the benchmark according to the position of the benchmark detected by the mark-finding device.

9. The water quality monitoring device according to claim 8, characterized in that: The end of the pole away from the movable part is coated with orange waterproof material; the marking device comprises: An image acquisition device, the image acquisition device is arranged on the detection component; the image acquisition device is used to acquire a water surface image; and An image processing device, wherein the image acquisition device is arranged on the detection component; the image processing device is electrically connected to the image acquisition device and the control device respectively; the image processing device is used to determine the position of the benchmark according to the acquired water surface image, and send the position data of the benchmark to the control device.

10. The water quality monitoring device according to claim 9, characterized in that: The detection component comprises: A mobile platform, one end of which is connected to the release and recovery component; A driving member, the driving member is disposed on the mobile platform; the driving member is electrically connected to the control device; the driving member is used to drive the mobile platform to move on the water surface; and The detection mechanism is arranged on a side of the mobile platform away from the bottom of the water; the detection mechanism is used to extract the water sample in the sampling device through the release and recovery component and detect the water sample.

Images