56 results about "Groundwater sampling" patented technology

The invention discloses an intelligent depth-adjustable sampling device for underground water pollution detection, and relates to the technical field of underground water sampling, the intelligent depth-adjustable sampling device comprises a sampling equipment main body and a controller, the bottom of the sampling equipment main body is provided with a driving device, and a supporting table is mounted above the sampling equipment main body; the device comprises a supporting table, a machine shell and a winding assembly are installed on the supporting table, a lifting device is installed at the output end of the supporting table, a drilling assembly and a sampling assembly are installed on the lifting device, a cooling assembly is arranged on the side face of the drilling assembly, and the winding assembly is matched with the sampling assembly. According to the invention, integrated intelligent operation of drilling, depth adjustment, sampling and preliminary detection is realized, and the efficiency and accuracy of underground water pollution detection sampling are significantly improved.

The utility model discloses an underground water sampling device for engineering geological survey, which comprises a main body assembly, a control box, a positioning plate, ground nails, a support frame and a driving box, the support frame is arranged in the control box, and the driving box is fixed at the top of the support frame; the water taking assembly comprises a moving part, a winding part and a sample separating part, the moving part is arranged in the control box, the winding part is arranged in the driving box, and the sample separating part is arranged below the driving box. The underground water sampling device has the beneficial effects that through the matched use of the moving part and the winding part, a worker can conveniently operate and sample underground water at a position far away from a water source sampling point, the worker can be prevented from falling into water accidentally, the safety during water source sampling is improved, and through the arrangement of the sample separating part, the worker can conveniently place the sampler into the underground water, so that the sampling efficiency is improved. Five underground water sources with different depths are sampled at a time, and meanwhile, filter holes are formed in the top of the sample separating barrel, so that weeds or large-particle impurities can be prevented from entering the sample separating barrel.

This invention relates to the field of hydrogeology, specifically to a groundwater sampling device for hydrogeology. The device comprises multiple vertically arranged splicing rods, each with a threaded hole at its top and a screw head fixedly connected to its bottom. The screw head engages with the adjacent threaded hole. A circular hole is formed on the top surface of a sleeve plate, which slidably engages with the outer wall of the splicing rod. A motor box is located on one side of the sleeve plate. In this invention, the splicing rods are sequentially spliced ​​and inserted into a well. A welded metal bracket secures the splicing rods to the wellhead. The sleeve plate is lowered to the aquifer using an automatic winch. An electric push rod moves the sampling mechanism, allowing it to drill into the aquifer through the well pipe's filter holes. The sampling mechanism then samples the water flow within the aquifer, improving the accuracy of sampling a single aquifer. After sampling, a filling mechanism can backfill the aquifer with soil, facilitating sampling operations for users.

This invention discloses a micro-well-washing groundwater sampling system and method, including a sampling point, which is a section of water inside the well pipe; it also includes pumping equipment and sensor equipment, both located at the sampling point; it further includes two groundwater detectors and a detection host, with the two groundwater detectors located above and below the sampling point, respectively. The two groundwater detectors are used to monitor the water flow between the upper and lower water bodies and the sampling point; the detection host is used to receive the real-time water flow data monitored by the groundwater detectors and adjust the pumping speed of the pumping equipment in real time according to the water flow data and the pumping strategy; the detection host is used to receive the water quality indicators collected in real time by the sensor equipment; the detection host judges whether the water at the sampling point meets the preset sampling conditions at preset time intervals, and collects water samples if the preset conditions are met.

The utility model relates to the technical field of underground water sampling equipment, one embodiment of the utility model provides a layered water stopping device for hydrogeological drilling, the layered water stopping device for hydrogeological drilling comprises a box body, and a partition plate is fixedly connected to the middle of an inner cavity of the box body. An operator pumps underground water in a cavity in the top end of a partition plate through a connecting pipe, and when a first motor is started, a rotating shaft and a hollow block rotate, so that the inner surface of the hollow block extrudes and pushes the outer surface of a circular shaft, and then the circular shaft drives a connecting block to integrally move leftwards; according to the technical scheme, the bottom end of the moving block moves to the top end of the first water pipe, then shielding of the second water pipe is relieved, the first water pipe is shielded, and an operator can extract underground water in a cavity in the bottom end of the partition plate. The technical problem that underground water of different depths cannot be pumped at a time in the prior art is solved.

The utility model discloses an underground water sampler and a multi-depth underground water sampling system, the sampler comprises a hollow sampling container and covers sealed at the openings at the two ends of the sampling container, a plurality of axial through holes are formed on the annular wall of the sampling container, and the axial through holes extend out of the two ends of the sampling container; wherein one cover is provided with a suction pipe communicated with the inner cavity of the sampling container, and the annular wall of the sampling container is provided with a plurality of radial holes. The system comprises at least ten sampling hoses, a plurality of long pipes and a sampler, one end of each long pipe is detachably and fixedly connected with one end of the sampler, and the other end of each long pipe is detachably and fixedly connected with one end of another sampler; and each sampling hose sequentially penetrates through the axial through hole in each sampler from top to bottom and is connected with the suction pipe of the sampler with the corresponding depth. According to the utility model, more than ten sampling hoses can be connected in series, water samples in sampling containers with different depths can be extracted, the structure is simple, the assembly is convenient, and the manufacturing cost is low.

The application discloses an automatic control system for groundwater sampling and microbial sample pretreatment, and belongs to the technical field of groundwater environment monitoring. The system comprises a sample collection unit, a microbial pretreatment unit, a sample detection unit, a sample storage unit, a wastewater storage unit and an intelligent control system. The sample collection unit comprises a sampling head, a sampling tube, an air bag pump and a first flow sensor. The microbial pretreatment unit comprises a multi-stage filtration system and a filter membrane storage system. The intelligent control system is used for receiving flow signals and feeding back to adjust the opening and closing of each valve and control pump water parameters. The application provides an automatic control system for groundwater sampling and microbial sample pretreatment based on hydrogeology and monitoring well parameters, Internet of Things sensing technology, self-control valve groups and model algorithm coupling. The system can realize adaptive control and optimization of sampling and pretreatment parameters through multi-source data fusion.

This invention relates to the field of sampling device technology and discloses a stratified groundwater sampling device, including a sampling tube, and further comprising: a cylindrical component, a sliding component, multiple baffle plates, and multiple sliding rods. The cylindrical component is fixedly connected to the middle of the sampling tube with their center lines coinciding. The sliding component is slidably connected inside the cylindrical component, and its upper end is pulled by a pulling component and uniformly fitted and fixed to the outside of the cylindrical component. Each baffle plate divides the cavity between the cylindrical component and the sampling tube into multiple water storage cavities of the same size. Multiple sliding holes are formed through the middle of the baffle plate along its circumference. The bottom of each sliding hole has a water filling hole communicating with the water storage cavity. Multiple sliding rods are slidably connected to each sliding hole in a corresponding manner. Sealing plugs are fitted and fixed to the portions of the sliding rods near the sampling tube and the cylindrical component. One end of each sliding rod extends into the cylindrical component, and a reset component is connected to the sliding rod within the sliding hole. This invention enables continuous underwater stratified sampling of groundwater at different depths.

This utility model discloses a fixed-point water sampling device for groundwater environmental surveys, belonging to the field of fixed-point water sampling technology. The upper end of the drill pipe is equipped with an assembly head, through which an assembled water sampling pipe is connected, increasing the length of the drill pipe and the drilling depth. The side wall of the assembled water sampling pipe has a handle, facilitating user operation of the assembled water sampling pipe and drill pipe for water sampling. The assembled water sampling pipe is connected to a connecting pipe via a connector and a connecting sleeve. A docking seat is installed at the upper end of the connecting pipe, and a filter seat is installed at the upper end of the docking seat via fasteners. The design of the assembled water sampling pipe and drill pipe facilitates extending the drill pipe and increasing the drilling depth to meet the needs of groundwater sampling at different depths. The design improves water sampling efficiency and the flexibility and practicality of the device. The elliptical design of the squeeze ball facilitates operation; users can easily draw water samples into the sampling bottle by pressing. This design simplifies the water sampling process and improves the user experience.

The utility model relates to environmental monitoring equipment technical field especially relates to a groundwater sampling device for environmental monitoring. Including bottom disc, bottom disc is equipped with one, and the middle hole is set up on the bottom disc, to make sampling pump and water suction pipe through the middle hole and extend into the well, rotationally set up the turntable on the bottom disc, four arc grooves are set up on the turntable along the circumference, the moving rod that is consistent with the number and the layout of arc groove is also slidably provided on the bottom disc along the circumference, and the end of moving rod is provided with the embedded end that is embedded in adjacent arc groove. The utility model discloses through setting up moving rod and the structure of the stopper, can effectively limit the water suction pipe and sampling pump in the shaking of the falling process, avoid its and the well wall and lead to the soil falling off to collide or rub, thereby significantly reduce the risk of water sample being contaminated, help to keep the stability of sampling equipment operation, ensure the accuracy of sampling position, improve sampling accuracy and reliability.

The invention relates to the technical field of underground water sampling, in particular to an underground water quality monitoring and sampling device which comprises a sampling box, a buoyancy component is fixedly mounted on the lower side of the sampling box, a sampling shell is fixedly mounted on the lower side of the buoyancy component, and a sampling component is rotatably mounted on the upper side of the sampling shell. An anti-turbulent flow assembly is fixedly mounted on the lower side of the sampling shell; the worm drives the worm gear to rotate, the worm gear drives the driving rod to rotate, the driving rod drives the driving gear to rotate, the driving gear drives one of the connecting gears to rotate, and therefore the multiple sets of connecting gears are driven to perform linkage movement; the six anti-spoiler plates are driven to move and are parallel to one another, large-particle sediments which do not participate in detection at the bottom of the sampling well are separated, then sampling water is sucked into the sampling well through the one-way suction nozzle, and the situation that the sampling water is mixed and polluted due to turbulent flow generated in the suction process is prevented.

The utility model relates to underground water sampling equipment technical field, concretely to an environmental detection underground water sampling equipment, including sampling pipe, the inner chamber sliding joint of sampling pipe has the limit stop, and the both sides swing joint of limit stop have grabbed and clamped, the below of grabbed and clamped is provided with first piston, the top of grabbed and clamped is provided with second piston, and the bottom of second piston is provided with limit slot, this environmental detection underground water sampling equipment, through sectional type pumping structure, carries out layered sampling to independent aquifer, and the cylinder drives grabbed and clamped to pull first piston to go up, and water sample passes through filter head and enters the below of sampling pipe, when the top of grabbed and clamped is pressed against the inside of limit slot, the bottom of grabbed and clamped loosens the clamping of connector, continues to drive second piston to go up, carries out sampling to another layered water sample through second sampling port, avoids the problem that water sample of different depth mixes together or sampling is not accurate.

A system for repairing an organic polluted site, comprising: a functional well subsystem, comprising a plurality of aeration wells (1), extraction wells (7), pressure monitoring wells and groundwater sampling and monitoring wells, wherein the aeration wells (1) are arranged in a main polluted region, the extraction wells (7) are arranged to cover an aeration region, and it is ensured that a circle is formed on the periphery to surround all the aeration wells; an aeration subsystem, used for providing aeration for each aeration well (1); an extraction subsystem, used for extracting pollutants from each extraction well (7); a data acquisition subsystem, used for acquiring and monitoring key operating parameters of each subsystem; a PLC controller (6), separately connected to each subsystem, monitoring the key operating parameters, and controlling the operation of each subsystem; and an oxygen slow-release-based microbial enhancement subsystem, arranged in the aeration wells (1) and the groundwater sampling and monitoring wells and used for slowly releasing oxygen into groundwater. The system can improve efficiency, greatly shorten the repair time, and save costs. Also disclosed is a repair method using the system.

The utility model provides an underground water level measuring auxiliary device. The underground water level measuring auxiliary device comprises a support, a winding shaft, a measuring belt and a balancing weight. The support is provided with a supporting arm, and the supporting arm is provided with a through hole and a centering component. The winding shaft is rotationally arranged above the supporting arm and connected with a rotation driving component. The measuring tape is wound on the winding shaft, passes through the through hole, extends out and is connected with a floating block; a locking structure is arranged between the balancing weight and the supporting arm; a groove is formed in the upper side surface of the floating block, so that when the balancing weight applies pressure to the groove, the floating block can sink into water and collect an underground water sample. Meanwhile, the rotation of the winding shaft is controlled by rotating the driving component, and the underground water level depth can be measured while sampling is completed in cooperation with the control of an operator on the straightening degree of the measuring belt. According to the underground water level measuring and taking auxiliary device, underground water level depth measurement and underground water sampling can be rapidly completed, the number of tools needing to be carried by operators is reduced, and the execution efficiency of underground water level measuring and taking operation is ensured.

The utility model provides a depth-keeping and quantitative sampler for underground water and surface water for hydrogeology. The depth-keeping and quantitative sampler for the underground water and the surface water for the hydrogeology comprises a collecting barrel, the top of the collecting barrel is movably sleeved with a positioning frame, and the top of the positioning frame is fixedly connected with a positioning ring. According to the fixed-depth and quantitative sampler for the underground water and the surface water for the hydrogeology, provided by the utility model, by arranging the positioning frame, when deep well water flow sampling needs to be carried out, one end of the pull rope is fixed in the positioning ring, and at the moment, the sampling barrel is started to be put into a deep well, so that water flow enters the sampling barrel through the water inlet; and when the water flow collection is finished, the pull rope is lifted to drive the collection barrel to lift, and the water inlet is sealed by the sealing plate, so that the water flow can be taken out from the interior of the deep well, the problem that the water flow is relatively inconvenient to convey and collect through a pipeline is avoided, and the underground water is conveniently sampled.

The utility model relates to the technical field of sampling devices, and discloses an underground water sampling device which comprises a lifting frame, a hollow shaft, a spline housing, a spline shaft, a cylinder, a spiral blade, a rotating shaft, a circular plate and a filter cartridge. During use, after the hollow shaft is driven by external force to rotate, the cylinder, the spiral blade and the circular plate can be driven to rotate synchronously. Then, the lifting frame is controlled to work, and the [-shaped plate can synchronously descend the cylinder, the spiral blade and the circular plate until the cylinder is inserted into an underground sampling position. After the spline shaft is driven by external force to slide, the rotating shaft can be driven to move, then the circular plate is driven to move, and the lower port of the cylinder is opened through the circular plate. And at the moment, the underground water can enter the cylinder after being filtered by the filter cartridge. Finally, the Beller pipe is put into the cylinder through the through hole, so that the underground water in the cylinder can be collected, and the sampling work of the underground water is completed. No additional drilling device is needed for drilling, and operation is easy and convenient.

This invention relates to the field of groundwater sampling devices, specifically a groundwater sampling device and its usage method for geological engineering. The device includes a sampler housing with several sampling chambers located on the upper part of the inner wall of the housing. Each sampling chamber has an inlet at its upper part, and a sealing rod is movably installed at the inlet. It also includes a lifting mechanism movably installed at the bottom of the sampler housing for removing the sampler housing from the groundwater. This groundwater sampling device for geological engineering uses the inherent water pressure difference between the shallow, middle, and deep groundwater layers as its driving force. Through a series of mechanical linkages involving a piston cylinder, piston rod, geared disc sleeve, gear set, driven rod, lever ring, and swing plate, the three sampling chambers can be independently opened and closed automatically and sequentially by lowering and pulling the rope, based on changes in water pressure. This achieves adaptive stratified water sampling, significantly simplifying field operations, reducing manual labor intensity, and significantly improving the automation level and efficiency of sampling.

The application discloses a groundwater sampling flow control system, which comprises an ultrasonic flow detection module, a flow control module, a data processing and storage module, a display module and a portable integrated box. The measurement range of the ultrasonic flow detection module is 0-20 L / min, and the precision control is ±0.1%. The flow rate and flow are calculated by detecting the time difference of the forward and reverse flow propagation of sound in the groundwater fluid. The flow control module cooperates with a sampling pump to realize accurate flow regulation and control. The data processing and storage module can calculate the cumulative flow, store historical data and support USB export. The display module realizes the digital real-time display of the flow rate, cumulative flow, battery capacity and other information. The system realizes accurate control and measurement of the groundwater sampling flow, avoids sample pollution, is portable and easy to operate, can record the well washing state, and meets the national standard requirements for VOC water sample collection.

The utility model relates to underground water sampling and well washing technical field discloses a kind of underground water sampling devices, including two main body skeletons, two the main body skeletons relative side four corners are evenly provided with horizontal telescopic skeleton, multiple the horizontal telescopic skeleton between being provided with X type support skeleton, two the main body skeleton bottom end are evenly provided with two vertical telescopic skeleton, four The vertical telescopic skeleton bottom end are rotatably provided with gyro wheel, and detection cup, sampling device and sampling pump retraction device are additionally set on skeleton. In the utility model, sampling device can reduce the number of equipment instruments needed for on-site sampling, reduce the carrying load of sampling personnel by pulling and carrying, improve sampling efficiency, realize the storage of the device and different flow and parallel sampling of water sample through structural design, meet multiple indicators, multiple quantities and multiple sampling, improve the efficiency of sampling.

The invention relates to the technical field of underground water sampling, in particular to an underground water sampling device for hydrogeology, which comprises a case and further comprises a water inlet sampling structure connected with the case, the water inlet sampling structure comprises a cable laying mechanism connected with the case, the cable laying mechanism is connected with a diving moving mechanism, the diving moving mechanism comprises a steering moving part, and the steering moving part is connected with the case. The steering moving part is connected with a water taking shell, and the water taking shell is connected with a camera part; and the gap moving structure is connected with the water taking shell and comprises a frame body, the frame body is connected with a plurality of sets of crawler belt moving parts, the frame body is connected with a clamping guide part connected with the water taking shell, and the frame body is connected with a carrying part. According to the invention, through mutual cooperation of the water inlet sampling structure and the gap moving structure, the device enters underground water through ground cracks and carries out sampling operation, so that the device can conveniently carry out water sampling operation by using the cracks, so that the device can carry out water sampling operation without punching, and the application range of the device is widened.

This invention provides a method and system for sampling, analyzing, and monitoring damaged groundwater, relating to the field of groundwater sampling and analysis technology. By constructing an original data matrix and performing scientific normalization, this invention calculates a comprehensive risk index, accurately delineates potential pollution risk zones, and achieves quantitative and objective risk classification of monitoring areas. This solves the resource misallocation problem caused by uniform sampling points in traditional groundwater sampling. Based on precise cyanide water quality parameters obtained from stratified sampling, a cyanide pollutant transport model is established and numerically solved using the finite difference method. This overcomes the limitations of relying solely on data from individual sampling points, making it difficult to grasp the overall spatial distribution and future diffusion trends of pollutants. By spatially superimposing and comparing cyanide concentration with a set threshold, it determines whether the groundwater in each grid unit is damaged, providing a clear and repeatable judgment standard.

This application discloses a high-efficiency, portable dredging device for groundwater sampling, belonging to the field of dredging technology. It includes a connecting rod, an abutment ring fixedly connected to the outside of the connecting rod with an abutment groove, a wall sleeve A inserted outside the connecting rod, and a wall sleeve B inserted outside the wall sleeve A. A fastening handwheel is threadedly connected between wall sleeve B and wall sleeve A. One end of the fastening handwheel can be inserted into the abutment groove for positioning. Both wall sleeves B and A have semi-circular shovel plates fixedly connected to one end by bolts, and the two semi-circular shovel plates are slidably connected. This application uses the fastening handwheel to connect and limit the connecting rod, wall sleeve A, and wall sleeve B, forming a dredging structure. After the fastening handwheel is removed, wall sleeves A and B can drive the fixedly installed semi-circular shovel plates to slide and adjust, facilitating the removal of silt from the cylinder formed by the semi-circular shovel plates.

The application discloses a groundwater pollution detection sampling device for hydrogeological survey, and relates to the technical field of hydrogeological survey.The device comprises a fixed bearing plate, a support protection frame, a groundwater sampling mechanism, a liquid discharge pipe disc mounting frame, a liquid booster pump, an impurity storage box, a liquid discharge pipe and a fixed balance frame.The groundwater sampling mechanism comprises a drilling assembly, a drilling control assembly, a connecting sampling assembly, a traveling balance assembly and a collecting sampling assembly.The drilling control assembly is used for realizing small-angle direction correction, so that the predetermined depth can be accurately reached;clean water is used to replace the traditional drilling fluid, so that the groundwater sample is prevented from being polluted;the connecting sampling assembly is used for forming a closed area at the sampling depth, and the groundwater is extracted in advance to reduce the concentration of external pollutants and ensure the purity of the sample;the track moving wheel and the fixed balance frame are combined, so that stable transfer between dispersed sampling points is realized, and the sampling efficiency and detection accuracy are improved.

This utility model discloses a digging device for sandy soil environments, belonging to the technical field of sand digging equipment. It includes a rotating handle, drill rods, a column barrel, an arc-shaped barrel, a spiral drill bit, and support barrels. Several drill rods are detachably mounted on the lower part of the middle end of the rotating handle. A column barrel is detachably mounted on the lower end of the drill rods. An arc-shaped barrel is mounted on the lower end of the column barrel, and a spiral drill bit is housed inside the arc-shaped barrel. The spiral drill bit is fixed to the lower end of the top wall of the column barrel via a fixed shaft. Several support barrels are detachably mounted on the outer side of the drill rods. This device has good portability, is not limited by complex geographical conditions, and adopts a multi-segment casing splicing design, allowing for unlimited depth digging of shallow groundwater wells, saving time and labor. The excavated shallow groundwater wells can serve as long-term groundwater level observation points or shallow groundwater sampling points. The semi-enclosed design of the drill bit bottom effectively reduces the problem of sand sliding out of the drill bit due to water flow.

The present application relates to the technical field of groundwater sampling, and specifically discloses a groundwater sampling device for geotechnical engineering investigation, which comprises an electric wire releasing device, a buzzer arranged at the top of the front side of the electric wire releasing device, a steel wire rope wound around the outer wall of the electric wire releasing device, a sampling cylinder with its top end arranged at the top end of the steel wire rope, a water inlet arranged at the bottom end of the right side of the outer wall of the sampling cylinder, an air inlet arranged at the top of the right side of the outer wall of the sampling cylinder, and an air outlet arranged at the top of the left side of the outer wall of the sampling cylinder, and three one-way valves arranged at the outer walls of the water inlet, the air inlet and the air outlet respectively. The device effectively solves the problem that the suitable depth sample below the groundwater level cannot be accurately collected in the prior art, improves the accuracy and reliability of groundwater sampling, provides more scientific and accurate data support for groundwater resource management, environmental monitoring and geological research, and helps to promote the in-depth development and progress of related fields.

The utility model discloses a digital intelligent underground water sampling system which comprises a winding roll, a water sampling pipeline, a sampling probe, a flow cell and a control module, the sampling probe is lowered into the well casing by the winding roll; the water sampling pipeline comprises an underground pipeline and an overground pipeline which are communicated with each other; the underground pipeline is connected with the sampling probe, the sampling probe comprises a shell, a control adapter plate, a sampling pump and a filter are arranged in the shell, a water inlet is formed in the side wall of the shell, the filter is arranged at the water inlet, the filter is connected with the sampling pump, and the sampling pump is connected with the underground pipeline; a well diameter measuring module, a water level and water temperature measuring module, a well depth measuring module and a screen pipe recognition module are further arranged in the shell. The control module comprises a tablet computer operation module and a platform server; the tablet computer operation module controls the sampling probe to collect data and videos and transmits all the collected data and videos to the platform server. And the platform server is used for storing and displaying information of all workflows.

The invention discloses an underground water sampling device which comprises a sampling module used for extracting a water sample from a monitoring well; the well washing module is connected with the sample sending module and is used for accommodating a water sample with a set volume and detecting water quality parameters; the switching module is connected with the well washing module and is used for switching the flow direction of the water sample; the suction filtration module is connected with the switching module and is used for extracting and filtering the water sample; the sample conveying module is respectively connected with the suction filtration module and the switching module and is used for conveying the water sample; the sample storage module is used for storing the water sample pumped by the sample sending module; the fixing agent adding module is used for adding a fixing agent into the water sample in the sample storage module; according to the scheme, full automation of underground water sampling and pretreatment is achieved, compared with the prior art, manual intervention operation is not needed in the whole process, the risks of manual sample interference and manual fixing agent adding are fundamentally eliminated, the sampling efficiency is greatly improved, practicability is high, and the device is suitable for wide application and popularization.

The utility model discloses an underground water sampling device capable of storing multiple samples, which relates to the technical field of underground water sampling and comprises a sampling shell, a pull rope is fixedly connected to the center of the top surface of the sampling shell, a connecting disc is rotatably connected to the upper side of the inner wall of the sampling shell, and storage cylinders are fixedly connected to the periphery of the bottom surface of the connecting disc. The bottom surfaces of the four storage cylinders are in contact with the lower side of the inner wall of the sampling shell, a water inlet is formed in the lower side of the inner wall of the sampling shell and located on the lower side of one storage cylinder, and water outlets are formed in the upper side of the inner wall of the sampling shell and the top surface of the connecting disc and located on the upper sides of the four storage cylinders. A sampling structure with a built-in annular pipeline is adopted, so that the size of the whole device can be greatly reduced, the problem that the device is stuck in a sampling tube well is avoided, the normal use function of the device is ensured, the device can sample underground water with different depths and even deeper underground water, and the use performance of the device is improved.

The invention relates to the technical field of underground water sampling equipment, in particular to an underground water in-situ sampling device which comprises a suitcase, a pipeline supporting device, a wire coil and a sampler are arranged in the suitcase, the sampler comprises at least one sampling unit, each sampling unit comprises an outer cylinder, and a top cover and a bottom plug are arranged at the upper end and the lower end of each outer cylinder respectively. A bag is arranged in the outer cylinder, a bag nozzle is arranged on the bag and is in butt joint with a water inlet channel reserved in the bottom plug, a one-way valve is arranged in the water inlet channel, and an air nozzle communicated with the inner cavity is arranged on the outer wall of the outer cylinder and connected with an air pipe. According to the portable water sampling device, the disposable bag is used for collecting and sealing the water sample, the sampling units can be conveniently disassembled and replaced with new bags, meanwhile, after the multiple sampling units are sequentially connected end to end through the connecting rods, water sample collection on water levels at different depths can be achieved at a time, in addition, equipment components are integrated in the suitcase, and the whole portable water sampling device is more convenient to carry.

The application discloses an oasis regional underground water heavy metal content detection device, and relates to the underground water detection field.The device comprises a base, a through hole is formed in the center of the lower surface of the base, a supporting assembly is arranged at the lower end of the base, a water collecting box is arranged at the upper end of the base, a cover plate is connected to the water collecting box, a fixing assembly is arranged at the upper end of the cover plate, a conveying pipe is fixedly connected to the inner wall of the lower end of the through hole, and the sealing and packaging structure of the collecting assembly and the negative pressure sampling sealing channel design of the device as a whole are adopted to realize the sealing operation of the whole process of underground water sampling, detection and packaging, the sampling water is hardly in contact with air during the circulation process, the in-situ water quality state of the underground water is effectively maintained, the water sample composition change problem caused by air contact is fundamentally avoided, the accuracy of the oasis regional underground water heavy metal content detection result is greatly improved, and the actual demand of the regional underground water heavy metal accurate detection is met.