Sampling equipment for water pollutants and application of sampling equipment in micro-plastic sampling

Abstract

The invention relates to the technical field of water quality detection, in particular to water pollutant sampling equipment and application thereof in micro-plastic sampling, the water pollutant sampling equipment comprises a water sampling equipment main body, the rear side of the water sampling equipment main body is fixedly connected with a pipeline winding and unwinding mechanism, and one end of the pipeline winding and unwinding mechanism is fixedly connected with a sampling mechanism; a sampling mechanism fixing assembly is fixedly connected to the side, away from the pipeline retracting and releasing mechanism, of the rear side of the water body sampling equipment main body, and the sampling mechanism, the sampling mechanism shell and the sampling assembly are arranged, so that effective sampling of water body pollutants or micro-plastics at different depths can be realized; specifically, when water bodies of different depths are detected, an electric valve at the top of the fan-shaped water storage bin is controlled to be opened, then the water bodies are conveyed to the water storage disc through the water passing pipe and then extracted to the water body sampling equipment to be detected, and the process is repeated until water samples of all the depths are extracted and stored.

Description

Technical Field

[0001] The present invention relates to the technical field of water quality detection, and more specifically, to a sampling device for water pollutants and its application in microplastic sampling. Background Art

[0002] Water pollutants refer to substances that, after entering the water body, exceed the limit of the water body's self-purification function, causing changes in the water body's physical and chemical properties or biological community composition, thereby reducing the water body's use value and even endangering human health and the ecological environment. These pollutants can come from industrial wastewater, agricultural sewage, domestic sewage, and natural factors.

[0003] According to the patent document: CN117969184A, a water pollutant sampling device and its application in microplastic sampling are disclosed. When sampling the water body of the water conservancy project, the present invention fixes an empty sampling bottle on the circulation support table in advance, and after all the sampling bottles are filled with collected water, all the sampling bottles can be recovered at once, and then the collected water inside each sampling bottle is analyzed for pollutants, and the water quality environment changes of the water conservancy project within a sampling cycle are monitored; within any sampling cycle, the hydraulic drive unit of the water conservancy project can output power to the power transmission unit to simultaneously drive the water intake end of the water intake pipe to rise and fall and the rotation of the conveying impeller, and the water intake end of the water intake pipe can be raised and lowered below the water surface, and water bodies of different depths are sampled, so that water bodies of different depths can be collected, and the water quality of different depths of the water conservancy project is monitored.

[0004] In the process of sampling water pollutants in rivers, if the degree of river pollution is serious, there may be significant differences in the content and types of pollutants in river water at different depths. Traditional sampling methods can often only collect water samples at a certain depth, which makes it difficult to fully reflect the pollution status of river water. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a sampling device for water pollutants and its application in microplastic sampling. The technical problem to be solved by the present invention is that there may be significant differences in the content and types of pollutants in river water bodies of different depths. Traditional sampling methods can often only collect water samples at a certain depth, which makes it difficult to fully reflect the pollution status of river water bodies.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: A water pollutant sampling device and its application in microplastic sampling, comprising a water sampling device body, a pipe retracting mechanism is fixedly connected to the rear side of the water sampling device body, a sampling mechanism is fixedly connected to one end of the pipe retracting mechanism, and a sampling mechanism fixing component is fixedly connected to the side of the rear side of the water sampling device body away from the pipe retracting mechanism; The pipeline retracting and releasing mechanism includes two side plates, the front sides of the two side plates are fixedly connected with roller connecting blocks, the bottom rear sides of the two side plates are fixedly connected with U-shaped frame connecting plates, the right side of the right side plate is fixedly connected with a motor placement block, the rear side of the motor placement block is fixedly connected with a motor, the output end of the motor is fixedly connected with a turntable, and the left side of the turntable is fixedly connected with a gear.

[0007] As a further solution of the present invention: the front side of the U-shaped frame connecting plate is fixedly connected to the U-shaped frame, the top and bottom of the inner side of the U-shaped frame are respectively fixedly connected to sliding rods, the inner side of the U-shaped frame is rotatably connected to a screw rod in the middle of the two sliding rods, the outer wall of the turntable is covered with a track, the inner wall of the track on the side away from the turntable is covered with a second turntable, the left side of the second turntable is fixedly connected to a rotating rod, and the left end of the rotating rod extends to the inner side of the U-shaped frame and is fixedly connected to the right end of the screw rod.

[0008] As a further scheme of the present invention: the inner sides of the two roller connecting blocks are rotatably connected with a roller rotating rod, the right end of the roller rotating rod extends to the right side of the outer wall of the right roller connecting block and is fixedly connected with a second gear, the outer wall of the second gear is meshed with the outer wall of the gear, the outer wall of the roller rotating rod is fixedly connected with a roller on the outer wall of one side of the inner sides of the two roller connecting blocks, the outer wall of the roller is sleeved with a pipe, the end of the pipe close to the main body of the water sampling equipment extends to the inner wall of the main body of the water sampling equipment, the outer wall of the pipe away from the main body of the water sampling equipment is movably connected with a moving block, the middle part of the inner wall of the moving block is threadedly connected to the outer wall of the screw rod, and the top and bottom of the inner wall of the moving block are respectively slidably connected to the outer walls of the two sliding rods.

[0009] As a further solution of the present invention: the sampling mechanism comprises a sampling mechanism housing, and a sampling component is fixedly connected to the inner wall of the sampling mechanism housing.

[0010] As a further solution of the present invention: the sampling mechanism housing includes a columnar housing, the outer wall of the columnar housing is provided with a water pumping pipe groove in an annular array, the top of the outer wall of the columnar housing is fixedly connected to a water storage tray connecting rod in an annular array, the inner top of a plurality of water storage tray connecting rods is fixedly connected to a water storage tray, and the top middle part of the water storage tray is fixedly connected to an end of the pipeline away from the main body of the water sampling equipment.

[0011] As a further solution of the present invention: the sampling component includes a control component, the bottom of the control component is fixedly connected to the bottom of the inner wall of the columnar shell, and the top of the control component is fixedly connected to a fan-shaped water storage tank.

[0012] As a further solution of the present invention: the control component includes a control component chassis, the inner side of the control component chassis is fixedly connected with a disc-shaped slide bin, the top annular array of the control component chassis is fixedly connected with a vertical rod, the outer wall annular array of the disc-shaped slide bin is provided with a through groove, the inner wall bottom annular array of the disc-shaped slide bin is provided with a slide bin bottom slide, the top of the disc-shaped slide bin is rotatably connected with a top plate, the top annular array of the top plate is provided with an arc-shaped slide, the middle part of the inner wall of the top plate is fixedly connected with a top plate rotating rod, the inner walls of multiple arc-shaped slides are slidably connected with expansion blocks, the bottom ends of multiple expansion blocks extend to the inner wall of the disc-shaped slide bin and are fixedly connected with the expansion blocks, and multiple expansion blocks The bottom of the expansion block is fixedly connected with a bottom slider of the expansion block, and the outer walls of the bottom sliders of the expansion block are respectively slidably connected to the inner walls of the bottom slides of the multiple slide bins opened at the bottom of the inner wall of the disc-shaped slide bin, the outer sides of the multiple expansion blocks are fixedly connected with expansion rods, and the outer ends of the multiple expansion rods extend to the outer wall of the disc-shaped slide bin through the multiple through grooves opened on the outer side of the disc-shaped slide bin, and the outer ends of the multiple expansion rods are fixedly connected with expansion plates, and the tops of the multiple expansion plates are fixedly connected with triangular support rods, and the tops of the multiple triangular support rods are fixedly connected with water pumping pipe connecting rods, the inner walls of the multiple water pumping pipe connecting rods are fixedly connected with water pumping pipes, and the inner ends of the multiple water pumping pipes are fixedly connected with water supply pipelines of the water pumping pipes.

[0013] As a further solution of the present invention: the fan-shaped water storage tank comprises a plurality of fan-shaped water storage tank bodies, the outer sides of the plurality of fan-shaped water storage tank bodies are respectively fixedly connected to the inner sides of a plurality of vertical poles, the bottoms of the plurality of fan-shaped water storage tank bodies are respectively fixedly connected to one end of a plurality of water pumping pipes and water delivery pipes away from the water pumping pipes, the tops of the plurality of fan-shaped water storage tank bodies are all fixedly connected with fan-shaped water storage tank water pipes, the ends of the plurality of fan-shaped water storage tank water pipes away from the fan-shaped water storage tank bodies extend to the top of the outer wall of the columnar outer shell and are respectively fixedly connected to the bottom of the water storage tray in a circular array, the plurality of fan-shaped water storage tank water pipes are all fixedly connected with electric valves on the outer wall on one side of the inner wall of the columnar outer shell, the tops of the plurality of fan-shaped water storage tank bodies are all fixedly connected with motor placement tank connecting rods on one side of the inner sides of the plurality of fan-shaped water storage tank water pipes, the tops of the plurality of fan-shaped water storage tanks are fixedly connected with motor placement tanks, the inner wall of the motor placement tank is fixedly connected with a second motor, and the output end of the second motor is fixedly connected to the top of the top plate rotating rod.

[0014] As a further scheme of the present invention: the sampling mechanism fixing component comprises a fixing component connecting plate, the right side of the front side of the fixing component connecting plate is fixedly connected with a hinge block, the left side of the front side of the fixing component connecting plate is fixedly connected with a slide plate, the two sides of the inner wall of the hinge block are rotatably connected with rotating columns, the top and bottom of the inner sides of the two rotating columns are fixedly connected with a plurality of tooth blocks, the outer sides of the two rotating columns are fixedly connected with a clamping plate, the front side of the outer wall of the rotating column on the left side is fixedly connected with a push-pull rod, the left side of the top of the push-pull rod is fixedly connected with a push-pull rod pushing block, the outer wall of the push-pull rod is slidably connected to the inner wall of the slide plate, the top of the slide plate is provided with a slide plate top groove, the top front side of the slide plate is fixedly connected with a hydraulic push rod fixing rod, the inner wall of the hydraulic push rod fixing rod is fixedly connected with a hydraulic push rod, the right end of the hydraulic push rod is fixedly connected with a push block, the top of the push-pull rod push block extends to the top of the outer wall of the slide plate through the slide plate top groove opened by the slide plate and the front side is fixedly connected to the rear side of the push block.

[0015] In addition, the present application also relates to a water pollutant sampling device and its application in microplastic sampling. The water pollutant sampling device is used to sample water bodies of water conservancy projects and analyze the microplastic content in the water bodies of water conservancy projects.

[0016] The beneficial effects of the present invention are: 1. The present invention is provided with a pipeline retracting and releasing mechanism, so that the pipeline will not be entangled or stuck during the retracting and releasing process, thereby ensuring smooth sampling. Specifically, when sampling water pollutants or microplastics, the motor is started to drive a series of rotating parts, including a turntable, a crawler, a second turntable, a rotating rod, a screw rod and a moving block. These parts work together to move the pipeline. At the same time, the cooperation of the gear and the slide rod allows the sampling mechanism to gradually enter the water body; 2. The present invention can achieve effective sampling of water pollutants or microplastics at different depths by providing a sampling mechanism, a sampling mechanism housing, and a sampling component, and prevent impurities from entering the water pumping pipe after the sampling is completed. Specifically, when detecting water bodies at different depths, the electric valve at the top of the fan-shaped water storage tank is controlled. After opening, the water is transported to the water storage tray through the water pipe, and then extracted to the water sampling equipment for detection. This process is repeated until water samples of all depths are extracted and stored. According to needs, the electric valves are opened one by one, and water samples of different depths are transported to the water storage tray in batches, and then tested and analyzed. After completing the water sampling, the sampling mechanism uses the pipeline and the roller to collect the samples to the shore, and then starts the second motor to shrink the water pumping pipe to the inner wall of the columnar housing to prevent impurities from entering; 3. The present invention provides a sampling mechanism fixing component to prevent it from shaking or falling off in a non-sampling state, thereby ensuring the stability and safety of the equipment. Specifically, when sampling is not required, the sampling mechanism is placed on the inner side of the two clamping plates, and the hydraulic push rod pushes the push block to move to the left, and the push block drives the push-pull rod to move in the same direction, thereby rotating the left rotating column, and the rotating column engages with the right rotating column through the gear block, causing the two rotating columns to rotate clockwise and counterclockwise respectively, thereby achieving a stable clamping of the sampling mechanism by the clamping plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the main three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the rear-view stereoscopic structure of the main body of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the pipeline retractable mechanism and the sampling mechanism of the present invention; Figure 4 It is a schematic diagram of the three-dimensional separation structure of the pipeline retracting and releasing mechanism of the present invention; Figure 5 It is a schematic diagram of the three-dimensional separation structure of the sampling mechanism of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the outer shell of the sampling mechanism of the present invention; Figure 7 It is a schematic diagram of the three-dimensional separation structure of the sampling component of the present invention; Figure 8 It is a schematic diagram of the three-dimensional separation structure of the control component of the present invention; Fig. 9 It is a schematic diagram of the three-dimensional structure of the fan-shaped water storage bin of the present invention; Fig.10 It is a schematic diagram of the three-dimensional structure of the sampling mechanism fixing component of the present invention.

[0018] In the figure: 1. water sampling equipment body; 2. pipeline retracting and releasing mechanism; 21. side plate; 22. roller connecting block; 23. motor placement block; 24. motor; 25. turntable; 26. gear; 27. crawler; 28. U-shaped frame connecting plate; 29. ​​second turntable; 210. rotating rod; 211. U-shaped frame; 212. screw rod; 213. sliding rod; 214. roller rotating rod; 215. second gear; 216. roller; 217. pipeline ; 218, moving block; 3, sampling mechanism fixing assembly; 31, fixing assembly connecting plate; 32, hinge block; 33, slide plate; 34, hydraulic push rod fixing rod; 35, hydraulic push rod; 36, push block; 37, slide plate top groove; 38, push-pull rod push block; 39, push-pull rod; 310, rotating column; 311, tooth block; 312, clamping plate; 4, sampling mechanism; 41, sampling mechanism shell; 411, columnar shell; 412, water pumping pipe groove ; 413, water storage tray connecting rod; 414, water storage tray; 42, sampling assembly; 421, control assembly; 4211, control assembly chassis; 4212, vertical rod; 4213, disc-shaped chute bin; 4214, through slot; 4215, chute at the bottom of the chute bin; 4216, top plate; 4217, arc chute; 4218, top plate rotating rod; 4219, retracting and expanding block; 42110, retracting and expanding block; 42111, retracting and expanding block bottom slider; 42112, expansion rod; 42113, expansion plate; 42114, triangular support rod; 42115, pumping pipe connecting rod; 42116, pumping pipe; 42117, pumping pipe water supply pipeline; 422, fan-shaped water storage tank; 4221, fan-shaped water storage tank body; 4222, motor placement tank connecting rod; 4223, motor placement tank; 4224, second motor; 4225, fan-shaped water storage tank water pipe; 4226, electric valve. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] like Figure 1-2 As shown, the present invention provides a sampling device for water pollutants and its application in microplastic sampling, including a water sampling device body 1, a pipe retracting and releasing mechanism 2 is fixedly connected to the rear side of the water sampling device body 1, a sampling mechanism 4 is fixedly connected to one end of the pipe retracting and releasing mechanism 2, and a sampling mechanism fixing component 3 is fixedly connected to the side of the rear side of the water sampling device body 1 away from the pipe retracting and releasing mechanism 2.

[0021] like Figure 3-9As shown, the pipeline retracting and releasing mechanism 2 includes two side plates 21, the front sides of the two side plates 21 are fixedly connected with roller connecting blocks 22, the bottom rear sides of the two side plates 21 are fixedly connected with U-shaped frame connecting plates 28, the right side of the right side plate 21 is fixedly connected with a motor placement block 23, the rear side of the motor placement block 23 is fixedly connected with a motor 24, the output end of the motor 24 is fixedly connected with a turntable 25, the left side of the turntable 25 is fixedly connected with a gear 26, the front side of the U-shaped frame connecting plate 28 is fixedly connected with a U-shaped frame 211, the top and bottom of the inner side of the U-shaped frame 211 are respectively fixedly connected with sliding rods 213, the inner side of the U-shaped frame 211 is rotatably connected with a screw rod 212 at the middle of the two sliding rods 213, and the outer wall of the turntable 25 is covered with a track 27, and the track 27 is away from the turntable 2 5, a second turntable 29 is sleeved on the inner wall of one side, a rotating rod 210 is fixedly connected to the left side of the second turntable 29, the left end of the rotating rod 210 extends to the inner side of the U-shaped frame 211 and is fixedly connected to the right end of the screw rod 212, the inner sides of the two roller connecting blocks 22 are rotatably connected with a roller rotating rod 214, the right end of the roller rotating rod 214 extends to the right side of the outer wall of the right roller connecting block 22 and is fixedly connected with a second gear 215, the outer wall of the second gear 215 is meshed with the outer wall of the gear 26, the outer wall of the roller rotating rod 214 is fixedly connected with a roller 216 on the outer wall of one side of the inner side of the two roller connecting blocks 22, the outer wall of the roller 216 is sleeved with a pipe 217, the end of the pipe 217 close to the water sampling device body 1 extends to the inner wall of the water sampling device body 1, the pipe The outer wall of one end of the water sampling device 217 away from the main body 1 of the water body sampling device is movably connected with a moving block 218, the middle part of the inner wall of the moving block 218 is threadedly connected to the outer wall of the screw rod 212, and the top and bottom of the inner wall of the moving block 218 are respectively slidably connected to the outer walls of the two sliding rods 213. The sampling mechanism 4 includes a sampling mechanism shell 41, and the inner wall of the sampling mechanism shell 41 is fixedly connected with a sampling assembly 42. The sampling mechanism shell 41 includes a columnar shell 411, and the outer wall of the columnar shell 411 is provided with a water pumping pipe groove 412 in an annular array. The outer wall top of the columnar shell 411 is fixedly connected with a water storage tray connecting rod 413 in an annular array. The inner top of the multiple water storage tray connecting rods 413 is fixedly connected with a water storage tray 414, and the middle part of the top of the water storage tray 414 is fixedly connected to the pipeline 2 17 is far away from the end of the water sampling device body 1, the sampling component 42 includes a control component 421, the bottom of the control component 421 is fixedly connected to the bottom of the inner wall of the columnar shell 411, the top of the control component 421 is fixedly connected to a fan-shaped water storage tank 422, the control component 421 includes a control component chassis 4211, the inner side of the control component chassis 4211 is fixedly connected to a disc-shaped chute bin 4213, the top annular array of the control component chassis 4211 is fixedly connected to a vertical rod 4212, the outer wall annular array of the disc-shaped chute bin 4213 is provided with a through groove 4214, the inner wall bottom annular array of the disc-shaped chute bin 4213 is provided with a chute bin bottom chute 4215, the top of the disc-shaped chute bin 4213 is rotatably connected to a top plate 4216,The top annular array of the top plate 4216 is provided with an arc-shaped slide groove 4217, the middle of the inner wall of the top plate 4216 is fixedly connected with a top plate rotating rod 4218, the inner walls of the plurality of arc-shaped slide grooves 4217 are slidably connected with a collection and expansion block 4219, the bottom ends of the plurality of collection and expansion blocks 4219 extend to the inner wall of the disc-shaped slide slot bin 4213 and are fixedly connected with a collection and expansion block 42110, the bottoms of the plurality of collection and expansion blocks 42110 are fixedly connected with a collection and expansion block bottom slider 42111, the outer walls of the plurality of collection and expansion block bottom sliders 42111 are respectively slidably connected to the inner walls of the plurality of slide slot bin bottom slide grooves 4215 provided at the bottom of the inner wall of the disc-shaped slide slot bin 4213, The outer sides of the plurality of expansion blocks 42110 are fixedly connected with expansion rods 42112, the outer ends of the plurality of expansion rods 42112 extend to the outer wall of the disc-shaped chute bin 4213 through the plurality of through slots 4214 opened on the outer side of the disc-shaped chute bin 4213, the outer ends of the plurality of expansion rods 42112 are fixedly connected with expansion plates 42113, the tops of the plurality of expansion plates 42113 are fixedly connected with triangular support rods 42114, the tops of the plurality of triangular support rods 42114 are fixedly connected with water pumping pipe connecting rods 42115, the inner walls of the plurality of water pumping pipe connecting rods 42115 are fixedly connected with water pumping pipes 42116, and the plurality of water pumping pipes 42116 are fixedly connected to the inner walls of the plurality of water pumping pipes 42116. The inner ends of the tubes 42116 are fixedly connected with the water supply pipes 42117, the fan-shaped water storage tank 422 includes a plurality of fan-shaped water storage tank bodies 4221, the outer sides of the plurality of fan-shaped water storage tank bodies 4221 are respectively fixedly connected to the inner sides of the plurality of vertical poles 4212, the bottoms of the plurality of fan-shaped water storage tank bodies 4221 are respectively fixedly connected to the ends of the plurality of water supply pipes 42117 away from the water supply pipes 42116, the tops of the plurality of fan-shaped water storage tank bodies 4221 are fixedly connected with the fan-shaped water storage tank water pipes 4225, and the ends of the plurality of fan-shaped water storage tank water pipes 4225 away from the fan-shaped water storage tank bodies 4221 extend to the columnar outer shell The top of the outer wall of 411 is fixedly connected to the bottom of the water storage tray 414 in a circular array, and multiple fan-shaped water storage tank water pipes 4225 are fixedly connected to the outer wall of one side of the inner wall of the columnar shell 411 with electric valves 4226, and the tops of the multiple fan-shaped water storage tank bodies 4221 are fixedly connected to the motor placement tank connecting rod 4222 on one side of the inner side of the multiple fan-shaped water storage tank water pipes 4225, and the tops of the multiple fan-shaped water storage tanks 422 are fixedly connected to the motor placement tank 4223, and the inner wall of the motor placement tank 4223 is fixedly connected to the second motor 4224, and the output end of the second motor 4224 is fixedly connected to the top of the top plate rotating rod 4218; When it is necessary to sample water pollutants or microplastics in the water, the motor 24 is first started, the output end of the motor 24 drives the turntable 25 to rotate, the turntable 25 drives the crawler 27 to rotate, the crawler 27 drives the second turntable 29 to rotate, the second turntable 29 drives the rotating rod 210 to rotate, the rotating rod 210 drives the screw rod 212 to rotate inside the U-shaped frame 211, the outer wall of the screw rod 212 is threadedly connected with a moving block 218, the inner wall of the moving block 218 is slidably connected to the outer walls of the two sliding rods 213, and the moving block 218 drives The pipe 217 moves, and at the same time, the rotating disk 25 rotates and also drives the gear 26 to rotate. The gear 26 meshes with the sliding rod 213 to rotate and drives the roller rotating rod 214 and the roller 216 on its outer wall to rotate. The rotation of the roller 216 releases the pipe 217. As the pipe 217 is released, the sampling mechanism 4 is gradually pulled into the water body. When the sampling mechanism 4 reaches the water surface, the motor 24 stops rotating. Through the cooperation of the moving block 218 and the roller 216, the pipe will not be entangled or stuck during the process of retracting and releasing, ensuring the smooth sampling. When the sampling mechanism 4 reaches the water surface, the sampling mechanism 4 is completely covered by the water due to its own gravity. At this time, the second motor 4224 is started, and the second motor 4224 starts the transmission top plate rotating rod 4218 to rotate, and the top plate rotating rod 4218 rotates to drive the top plate 4216 to rotate, and the top plate 4216 rotates to push the expansion block 4219 on the inner wall of the arc chute 4217 through the arc chute 4217, and then the expansion block 4219 drives The dynamic expansion block 42110 and the expansion rod 42112 move, thereby pushing the expansion plate 42113 to expand and contract on the outer wall of the disc-shaped chute bin 4213. When the multiple expansion plates 42113 are expanded outward, the water pumping pipe connecting rod 42115 and the water pumping pipe 42116 on the inner wall thereof are driven to expand outward. The water pumping pipe 42116 is expanded and extends through the water pumping pipe groove 412 to the outer wall of the columnar housing 411, so that the water pumping pipe 42116 is in the water body. At this time, first start a fan-shaped water storage tank body 4221 to pump water through the pumping pipe water supply pipeline 42117 and the pumping pipe 42116, and draw the extracted water into the interior of the fan-shaped water storage tank body 4221. At this time, since the interior of a fan-shaped water storage tank body 4221 is full of water, the overall gravity of the sampling mechanism 4 increases, and then the pipeline 217 is continuously retracted and released through the pipeline retracting and releasing mechanism 2, and the sampling mechanism 4 continues to sink to another depth. At this time, continue to start another fan-shaped water storage tank body 4221 to extract water from the inner wall of the fan-shaped water storage tank body 4221 through the pumping pipe water supply pipeline 42117 and the top plate 4216 connected thereto, and so on. By constantly changing the depth of the sampling mechanism in the water body and starting each fan-shaped water storage tank body to pump water in turn, effective sampling of water pollutants or microplastics at different depths can be achieved, and each fan-shaped water storage tank body will save the water sample at that depth after the pumping is completed; When it is necessary to detect water bodies at different depths, the electric valve 4226 arranged on the outer wall of the fan-shaped water storage tank water pipe 4225 connected to the top of the fan-shaped water storage tank body 4221 of the depth to be extracted is controlled, and the electric valve 4226 is opened. At this time, the fan-shaped water storage tank water pipe 4225 can transport the water stored in the fan-shaped water storage tank body 4221 to the water storage tray 414, and then extract it through the pipeline 217 and transport it to the inside of the water sampling equipment body 1 for detection, and so on. When water samples of all depths are extracted and stored, the electric valve 4226 on each fan-shaped water storage tank body 4221 can be opened one by one according to the needs of the experiment or detection, and the water samples of different depths can be transported to the water storage tray 414 in batches, and then transported to the inside of the water sampling equipment body 1 by the pipeline 217 for detection and analysis. This process not only realizes the effective collection of water samples of different depths, but also ensures the accuracy and efficiency of the sampling process; When the water sampling is completed, the sampling mechanism 4 collects it to the shore through the pipeline 217 and the roller 216, and then starts the second motor 4224 in reverse. The second motor 4224 retracts the multiple water suction pipes 42116 to the inner wall of the columnar shell 411 to prevent impurities from entering.

[0022] like Fig.10As shown, the sampling mechanism fixing component 3 includes a fixing component connecting plate 31, a hinge block 32 is fixedly connected to the right side of the front side of the fixing component connecting plate 31, a slide plate 33 is fixedly connected to the left side of the front side of the fixing component connecting plate 31, and rotating columns 310 are rotatably connected to the two sides of the inner wall of the hinge block 32, and the top and bottom of the inner sides of the two rotating columns 310 are fixedly connected to a plurality of tooth blocks 311, and the outer sides of the two rotating columns 310 are fixedly connected to the clamping plate 312, and the front side of the outer wall of the left rotating column 310 is fixedly connected to the push-pull rod 39, and the left top of the push-pull rod 39 is fixedly connected to the left The side is fixedly connected with a push-pull rod push block 38, the outer wall of the push-pull rod 39 is slidably connected to the inner wall of the slide plate 33, the top of the slide plate 33 is provided with a slide plate top groove 37, the top front side of the slide plate 33 is fixedly connected with a hydraulic push rod fixing rod 34, the inner wall of the hydraulic push rod fixing rod 34 is fixedly connected with a hydraulic push rod 35, the right end of the hydraulic push rod 35 is fixedly connected with a push block 36, the top of the push-pull rod push block 38 extends to the top of the outer wall of the slide plate 33 through the slide plate top groove 37 provided by the slide plate 33, and the front side is fixedly connected to the rear side of the push block 36; When sampling is not needed, the sampling mechanism 4 is placed on the inner side of the two clamps 312, and then the push block 36 is pulled to the left by the hydraulic push rod 35, and the push block 36 pulls the push-pull rod push block 38 to drive the push-pull rod 39 to move to the left, and the push-pull rod 39 pulls the left rotating column 310 to rotate, and the left rotating column 310 rotates through the inner tooth block 311 to engage with the tooth block 311 of the rotating column 310 on the right, so that the two rotating columns 310 rotate clockwise and counterclockwise respectively, and then the two clamps 312 are clamped on the outer wall of the sampling mechanism 4, so as to achieve a firm clamping of the sampling mechanism 4, avoid it from shaking or falling off in the non-sampling state, and ensure the stability and safety of the equipment.

[0023] In addition, the present application also relates to a water pollutant sampling device and its application in microplastic sampling. The water pollutant sampling device is used to sample water bodies of water conservancy projects and analyze the microplastic content in the water bodies of water conservancy projects.

[0024] Working principle of the present invention: when it is necessary to sample water pollutants or microplastics in the water, first start the motor 24, the output end of the motor 24 drives the turntable 25 to rotate, the turntable 25 drives the crawler 27 to rotate, the crawler 27 drives the second turntable 29 to rotate, the second turntable 29 drives the rotating rod 210 to rotate, the rotating rod 210 drives the screw rod 212 to rotate inside the U-shaped frame 211, the outer wall of the screw rod 212 is threadedly connected with a moving block 218, the inner wall of the moving block 218 is slidably connected to the outer walls of the two sliding rods 213, the moving block 218 drives the pipe 217 to move, at the same time, the rotation of the turntable 25 also drives the gear 26 to rotate, the gear 26 engages the sliding rod 213 to rotate, drives the roller rotating rod 214 and the roller of its outer wall 216 rotates, and the rotation of the roller 216 causes the pipe 217 to be released. As the pipe 217 is released, the sampling mechanism 4 is gradually pulled into the water body. When the sampling mechanism 4 reaches the water surface, the motor 24 stops rotating. Through the cooperation of the moving block 218 and the roller 216, the pipe will not be entangled or stuck during the process of retracting and releasing, thereby ensuring smooth sampling. When it is necessary to sample water pollutants or microplastics in the water body, the motor 24 is started first, and the output end of the motor 24 drives the turntable 25 to rotate, the turntable 25 drives the crawler 27 to rotate, the crawler 27 drives the second turntable 29 to rotate, the second turntable 29 drives the rotating rod 210 to rotate, the rotating rod 210 drives the screw rod 212 to rotate inside the U-shaped frame 211, and the screw rod 2 The outer wall of 12 is threadedly connected with a moving block 218, and the inner wall of the moving block 218 is slidably connected to the outer walls of the two sliding rods 213. The moving block 218 drives the pipe 217 to move. At the same time, the rotation of the turntable 25 also drives the gear 26 to rotate. The gear 26 engages the sliding rod 213 to rotate and drives the roller rod 214 and the roller 216 of its outer wall to rotate. The rotation of the roller 216 causes the pipe 217 to be released. As the pipe 217 is released, the sampling mechanism 4 is gradually pulled into the water body. When the sampling mechanism 4 reaches the water surface, the motor 24 stops rotating. Through the cooperation of the moving block 218 and the roller 216, the pipe will not be entangled or stuck during the process of retracting and releasing, ensuring the smooth sampling. At this time, a fan-shaped water storage tank body 42 is first started. 21 pumps water through the pumping pipe water supply pipeline 42117 and the pumping pipe 42116, and pumps the pumped water into the interior of the fan-shaped water storage tank body 4221. At this time, since the interior of a fan-shaped water storage tank body 4221 is full of water, the overall gravity of the sampling mechanism 4 increases, and then the pipe 217 is continuously retracted and released through the pipe retracting and releasing mechanism 2, and the sampling mechanism 4 continues to sink to another depth. At this time, another fan-shaped water storage tank body 4221 is started to pump water through the pumping pipe water supply pipeline 42117 and the top plate 4216 connected thereto to the inner wall of the fan-shaped water storage tank body 4221, and so on and so forth, thereby continuously changing the depth of the sampling mechanism in the water body, and starting each fan-shaped water storage tank body in turn to pump water,Effective sampling of water pollutants or microplastics at different depths can be achieved. After the water is pumped out, each fan-shaped water storage tank body will save the water sample at that depth. When it is necessary to test water at different depths, the electric valve 4226 arranged on the outer wall of the fan-shaped water storage tank water pipe 4225 connected to the top of the fan-shaped water storage tank body 4221 at the depth to be extracted is controlled. The electric valve 4226 is opened. At this time, the fan-shaped water storage tank water pipe 4225 can transport the water stored in the fan-shaped water storage tank body 4221 to the water storage tray 414, and then extract it through the pipeline 217 and transport it to the inside of the water sampling equipment body 1 for testing, and so on. When the water samples at all depths are After being extracted and stored, the electric valves 4226 on the fan-shaped water storage tank bodies 4221 can be opened one by one according to the needs of experiments or tests, and water samples of different depths can be transported to the water storage tray 414 in batches, and then transported to the inside of the water sampling equipment body 1 through the pipeline 217 for detection and analysis. This process not only realizes the effective collection of water samples of different depths, but also ensures the accuracy and efficiency of the sampling process. When the water sampling is completed, the sampling mechanism 4 collects it to the shore through the pipeline 217 and the roller 216, and then reversely starts the second motor 4224. The second motor 4224 retracts the multiple water pumping pipes 42116 to the inner wall of the columnar shell 411 to prevent impurities from entering; When sampling is not needed, the sampling mechanism 4 is placed on the inner side of the two clamps 312, and then the push block 36 is pulled to the left by the hydraulic push rod 35, and the push block 36 pulls the push-pull rod push block 38 to drive the push-pull rod 39 to move to the left, and the push-pull rod 39 pulls the left rotating column 310 to rotate, and the left rotating column 310 rotates through the inner tooth block 311 to engage with the tooth block 311 of the rotating column 310 on the right, so that the two rotating columns 310 rotate clockwise and counterclockwise respectively, and then the two clamps 312 are clamped on the outer wall of the sampling mechanism 4, so as to achieve a firm clamping of the sampling mechanism 4, avoid it from shaking or falling off in the non-sampling state, and ensure the stability and safety of the equipment.

[0025] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A sampling device for water pollutants, characterized in that: The device comprises a water body sampling device body (1), wherein a pipe retracting and extending mechanism (2) is fixedly connected to the rear side of the water body sampling device body (1), a sampling mechanism (4) is fixedly connected to one end of the pipe retracting and extending mechanism (2), and a sampling mechanism fixing component (3) is fixedly connected to the side of the rear side of the water body sampling device body (1) away from the pipe retracting and extending mechanism (2); The pipeline retracting and releasing mechanism (2) comprises two side plates (21), the front sides of the two side plates (21) are fixedly connected to a roller connecting block (22), the bottom rear sides of the two side plates (21) are fixedly connected to a U-shaped frame connecting plate (28), the right side of the right side plate (21) is fixedly connected to a motor placement block (23), the rear side of the motor placement block (23) is fixedly connected to a motor (24), the output end of the motor (24) is fixedly connected to a rotating disk (25), and the left side of the rotating disk (25) is fixedly connected to a gear (26).

2. A water pollutant sampling device according to claim 1, characterized in that: The front side of the U-shaped frame connecting plate (28) is fixedly connected to a U-shaped frame (211); the top and bottom of the inner side of the U-shaped frame (211) are respectively fixedly connected to sliding rods (213); the inner side of the U-shaped frame (211) is rotatably connected to a screw rod (212) at the middle of the two sliding rods (213); the outer wall of the turntable (25) is covered with a track (27); the inner wall of the track (27) away from the turntable (25) is covered with a second turntable (29); the left side of the second turntable (29) is fixedly connected to a rotating rod (210); the left end of the rotating rod (210) extends to the inner side of the U-shaped frame (211) and is fixedly connected to the right end of the screw rod (212).

3. The water pollutant sampling device according to claim 1 is characterized in that: The inner sides of the two roller connection blocks (22) are rotatably connected to a roller rotating rod (214); the right end of the roller rotating rod (214) extends to the right side of the outer wall of the right roller connection block (22) and is fixedly connected to a second gear (215); the outer wall of the second gear (215) is meshed with the outer wall of the gear (26); the outer wall of the roller rotating rod (214) is fixedly connected to a roller (216) on one side of the outer wall of the inner sides of the two roller connection blocks (22); the outer wall of the roller (216) is The wall is sleeved with a pipe (217), wherein one end of the pipe (217) close to the water sampling device body (1) extends to the inner wall of the water sampling device body (1), and the outer wall of one end of the pipe (217) away from the water sampling device body (1) is movably connected to a moving block (218), the middle part of the inner wall of the moving block (218) is threadedly connected to the outer wall of the screw rod (212), and the top and bottom of the inner wall of the moving block (218) are respectively slidably connected to the outer walls of the two sliding rods (213).

4. The water pollutant sampling device according to claim 1, characterized in that: The sampling mechanism (4) comprises a sampling mechanism housing (41), and a sampling component (42) is fixedly connected to the inner wall of the sampling mechanism housing (41).

5. The water pollutant sampling device according to claim 4, characterized in that: The sampling mechanism housing (41) comprises a columnar housing (411), the outer wall of the columnar housing (411) is provided with a water pumping pipe groove (412) in an annular array, the top of the outer wall of the columnar housing (411) is fixedly connected to a water storage tray connecting rod (413) in an annular array, the inner top of a plurality of the water storage tray connecting rods (413) is fixedly connected to a water storage tray (414), and the middle part of the top of the water storage tray (414) is fixedly connected to an end of the pipeline (217) away from the water body sampling device body (1).

6. The water pollutant sampling device according to claim 4, characterized in that: The sampling component (42) comprises a control component (421), the bottom of the control component (421) is fixedly connected to the bottom of the inner wall of the columnar housing (411), and the top of the control component (421) is fixedly connected to a fan-shaped water storage tank (422).

7. A water pollutant sampling device according to claim 6, characterized in that: The control component (421) comprises a control component chassis (4211), the inner side of the control component chassis (4211) is fixedly connected to a disc-shaped chute bin (4213), the top annular array of the control component chassis (4211) is fixedly connected to a vertical rod (4212), the outer wall annular array of the disc-shaped chute bin (4213) is provided with a through groove (4214), the inner wall bottom annular array of the disc-shaped chute bin (4213) is provided with a chute bin bottom chute (4215), the top of the disc-shaped chute bin (4213) is provided with a vertical rod (4212), and the vertical rod (4212) is fixedly connected to the vertical rod (4212). The top of the top plate (4216) is rotatably connected to the top plate (4216), and the top annular array of the top plate (4216) is provided with an arc-shaped slide groove (4217). The middle of the inner wall of the top plate (4216) is fixedly connected to a top plate rotating rod (4218). The inner walls of the plurality of arc-shaped slide grooves (4217) are slidably connected to a collection and expansion block (4219). The bottom ends of the plurality of collection and expansion blocks (4219) extend to the inner wall of the disc-shaped slide groove bin (4213) and are fixedly connected to the collection and expansion block (42110). The bottoms of the plurality of collection and expansion blocks (42110) are fixedly connected to the inner wall of the disc-shaped slide groove bin (4213). The plurality of expansion blocks (42110) are fixedly connected with a bottom slider (42111) of the expansion block, and the outer walls of the plurality of bottom sliders (42111) of the expansion block are respectively slidably connected to the inner walls of the plurality of bottom slide grooves (4215) of the slide groove bin opened at the bottom of the inner wall of the disc-shaped slide groove bin (4213); the outer sides of the plurality of expansion blocks (42110) are fixedly connected with expansion rods (42112), and the outer ends of the plurality of expansion rods (42112) respectively extend to the outer wall of the disc-shaped slide groove bin (4213) through the plurality of through grooves (4214) opened on the outer side of the disc-shaped slide groove bin (4213), The outer ends of the plurality of expansion rods (42112) are fixedly connected to the expansion plates (42113), the tops of the plurality of expansion plates (42113) are fixedly connected to the triangular support rods (42114), the tops of the plurality of triangular support rods (42114) are fixedly connected to the water pumping pipe connecting rods (42115), the inner walls of the plurality of water pumping pipe connecting rods (42115) are fixedly connected to the water pumping pipes (42116), and the inner ends of the plurality of water pumping pipes (42116) are fixedly connected to the water pumping pipe water supply pipelines (42117).

8. The water pollutant sampling device according to claim 6, characterized in that: The fan-shaped water storage tank (422) comprises a plurality of fan-shaped water storage tank bodies (4221), the outer sides of the plurality of fan-shaped water storage tank bodies (4221) are respectively fixedly connected to the inner sides of the plurality of vertical poles (4212), the bottoms of the plurality of fan-shaped water storage tank bodies (4221) are respectively fixedly connected to one end of the plurality of water pumping pipes (42117) away from the water pumping pipe (42116), the tops of the plurality of fan-shaped water storage tank bodies (4221) are respectively fixedly connected to a fan-shaped water storage tank water pipe (4225), the ends of the plurality of fan-shaped water storage tank water pipes (4225) away from the fan-shaped water storage tank bodies (4221) extend to the top of the outer wall of the columnar housing (411) and are respectively arranged in a circular array. The plurality of fan-shaped water storage tank water pipes (4225) are fixedly connected to the bottom of the water storage tray (414), and the outer wall of one side of the inner wall of the columnar housing (411) is fixedly connected to an electric valve (4226); the top of the plurality of fan-shaped water storage tank bodies (4221) is fixedly connected to a motor placement tank connecting rod (4222) on one side of the inner side of the plurality of fan-shaped water storage tank water pipes (4225); the top of the plurality of fan-shaped water storage tanks (422) is fixedly connected to a motor placement tank (4223); the inner wall of the motor placement tank (4223) is fixedly connected to a second motor (4224); and the output end of the second motor (4224) is fixedly connected to the top of the top plate rotating rod (4218).

9. The water pollutant sampling device according to claim 1, characterized in that: The sampling mechanism fixing component (3) comprises a fixing component connecting plate (31), a hinge block (32) is fixedly connected to the right side of the front side of the fixing component connecting plate (31), a slide plate (33) is fixedly connected to the left side of the front side of the fixing component connecting plate (31), rotating columns (310) are rotatably connected to the two sides of the inner wall of the hinge block (32), a plurality of tooth blocks (311) are fixedly connected to the top and bottom of the inner sides of the two rotating columns (310), a clamping plate (312) is fixedly connected to the outer sides of the two rotating columns (310), a push-pull rod (39) is fixedly connected to the front side of the outer wall of the left rotating column (310), and the left top of the push-pull rod (39) is fixedly connected to the left side of the top of the push-pull rod (39). A push-pull rod push block (38) is fixedly connected to the side, the outer wall of the push-pull rod (39) is slidably connected to the inner wall of the slide plate (33), the top of the slide plate (33) is provided with a slide plate top groove (37), the top front side of the slide plate (33) is fixedly connected to a hydraulic push rod fixing rod (34), the inner wall of the hydraulic push rod fixing rod (34) is fixedly connected to a hydraulic push rod (35), the right end of the hydraulic push rod (35) is fixedly connected to a push block (36), the top of the push-pull rod push block (38) extends to the top of the outer wall of the slide plate (33) through the slide plate top groove (37) provided on the slide plate (33), and the front side is fixedly connected to the rear side of the push block (36).

10. Application of a water pollutant sampling device according to any one of claims 1 to 9 in microplastic sampling, characterized in that: The water pollutant sampling device is used to sample the water of a water conservancy project and analyze the content of microplastics in the water of the water conservancy project.

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