328 results about "Sample water" patented technology

The invention discloses a low sample hydro-generator fault diagnosis method based on transfer learning. The method comprises the following steps: collecting a current signal, a vibration signal, a temperature signal and a voiceprint signal; executing preprocessing; performing label labeling, and dividing the data into a source domain data set and a target domain data set; operating parameters of the hydro-generator are collected, processed and combined into working condition feature vectors; training a source domain base model on the source domain data set to generate a pre-training parameter set; establishing a physical constraint module, and binding the physical constraint module with the parameter updating process of the source domain base model; initializing a transfer learning model, and calling a physical constraint module to apply constraint to generate a physically constrained transfer learning model; performing increment fine adjustment; and outputting a diagnosis result vector through the transfer learning model after increment fine tuning. According to the method, transfer learning and physical constraints are combined, hydro-generator fault diagnosis is optimized through increment fine tuning, and the method has the advantages of high precision, small sample adaptability and physical consistency verification.

The invention relates to the technical field of detection, in particular to an automatic water quality detection method and device, and the method comprises the steps: carrying out the multi-scale collection processing of a sample water body based on a distributed sensor network, extracting the spatial correlation features of multiple levels in an original data set, carrying out the feature reconstruction of the original data set according to the spatial correlation features, generating a feature enhancement data set; performing graph structuring processing according to the feature enhancement data set, and outputting to obtain a water quality feature graph; inputting the water quality feature map into a multi-task learning model, optimizing the multi-task learning model based on a loss function, and outputting a multi-parameter prediction result; performing reverse propagation processing on the multi-parameter prediction result to generate a spatial distribution diagram of the water quality parameters; and performing multi-scale pollution influence assessment based on the spatial distribution map, and generating a comprehensive water quality monitoring report. The core problem that the overall pollution condition and the dynamic change trend of the water body are difficult to accurately reflect in the prior art is solved, and the precision and practicability of water quality monitoring are remarkably improved.

The invention discloses a water pollution cross-domain traceability method based on multi-chain collaboration and stable isotope source analysis, and relates to the technical field of water environment monitoring, the method comprises the following steps: pollution source chemical fingerprint construction: collecting an environmental water sample and a potential pollution source sample in a drainage basin; adopting a mass spectrometer to detect stable isotope compositions such as delta 13C, delta 15N, delta 18O and the like in the pollutants; and performing morphological division on the pollutants by using a morphological grading extraction technology. Homology judgment precision is greatly improved through isotope and morphological analysis; cross-chain credible collaboration is achieved, multi-party data interaction is achieved, and timeliness and accuracy of pollution tracing are guaranteed; the space-time model traceability is combined with an evolution path and gridding mapping, so that the pollution inversion accuracy is improved; and ecological compensation support provides a quantitative basis for pollution intensity and diffusion range so as to support a compensation model.

The invention discloses an environmental pollution detection device, and belongs to the technical field of underground water pollution detection sampling devices. The environmental pollution detection device comprises a sampling assembly, the sampling assembly comprises a sampling pipe and control valves, a plurality of storage cavities are formed in the sampling pipe along the axis of the sampling pipe, the side face of each storage cavity is at least connected with one control valve, penetrating through grooves are formed in the outer side wall of the sampling pipe in the axis direction of the sampling pipe, and the control valves are all arranged in the first penetrating through grooves. The protection assembly comprises a spring and a baffle, a plurality of second penetrating through grooves are formed in the baffle, the propelling assemblies are evenly arranged in the second penetrating through grooves in the axis direction of the sampling pipe, and when the sampling pipe is lowered into a to-be-sampled water body, the baffle in the protection assembly can extrude the control valve, and components of different water body layers are prevented from being attached to an inlet of the control valve; after the sampling position is reached, the baffle moves upwards, the control valve is opened under the action of the spring, and then sampling is carried out, so that the obtained sample is more accurate and representative.

The invention discloses a quantitative evaluation method and system for leakage of a municipal drainage pipe network, and relates to the technical field of water information processing. A quantitative evaluation method for leakage of a municipal drainage pipe network comprises the following steps that S1, sewage quality samples of all sewage sources of a target sewage plant service area are collected, and the sewage sources comprise raw sewage of the target sewage plant service area and external water of the target sewage plant service area; s2, constructing a stable isotope source feature library of the external water and the raw sewage based on the sewage quality sample; s3, collecting a sewage sample at the water inlet end of the target sewage plant to obtain stable isotope abundance data; s4, on the basis of the stable isotope abundance data and the water source analysis model, obtaining the contribution ratio of each sewage source; and S5, based on the total amount of sewage treated by the target sewage plant and the contribution ratio of the sewage source, obtaining the pipe network leakage amount. Through the scheme, quantitative evaluation of leakage of the municipal drainage pipe network can be realized.

The utility model provides a mercury-containing organic wastewater treatment device in a Tibetan medicine processing process. The mercury-containing organic wastewater treatment device comprises a raw water tank, a micro-filtration membrane treatment unit, an electro-catalysis pretreatment unit, a mercury capturing and separating unit and a high-precision filtering unit which are sequentially connected, and the electro-catalysis pretreatment unit is further connected with a comprehensive waste gas purification unit; the mercury capture and separation unit comprises a chalcogenide reaction tank, a PAM reaction tank and a clarification tank which are communicated in sequence; the chalcogenide reaction tank is connected with a chalcogenide dosing device; and the PAM reaction tank is connected with a PAM dosing device. According to the utility model, the processes of filtration, electro-catalysis pretreatment, heavy metal capture, targeted adsorption and solid-liquid separation are adopted to treat a large amount of high-mercury, high-chromaticity, high-suspended-matter and high-COD wastewater generated in the Tibetan medicine zogtai processing process, so that the organic matter content of a water sample can be greatly reduced, the chromaticity of water is reduced, the suspended matter in water is removed, and the mercury concentration in water is reduced.

The present invention discloses a sampling mechanism for detecting sediment content in water conservancy projects, belonging to the technical field of sampling mechanisms. The present invention comprises a support platform and a servo motor mounted on the upper end of the support platform, wherein the output end of the servo motor is connected to a sampling barrel, a retention hole is formed on the side of the upper end of the sampling barrel, and a water leakage cover is fixed inside the sampling barrel. A protective bottom cover is provided at the bottom of the sampling barrel, and a drain pipe is installed on the protective bottom cover. A first cylinder is mounted on the upper end of the support platform, and the telescopic end of the first cylinder is interconnected by a guide connecting rod and a closed ring, the closed ring is used to control the opening and closing of the retention hole, and a sand filter cloth is provided inside the water leakage cover. When sampling water samples, the sampling mechanism for detecting sediment content in water conservancy projects facilitates stirring of the surrounding water area to be sampled, thereby equalizing the sediment content of the water area and improving the accuracy of subsequent test results.

A method, a system and an apparatus for determining pollutant control strategy, and a computer device. The method includes: obtaining water body data of different locations of a polluted water body and historical sample water body data of different pollution levels, and identifying pollutant distribution information; collecting water flow information of the polluted water body, and generating a pollutant control strategy for the polluted water body; executing the pollutant control strategy, and detecting change information of the water body data of each location; adjusting the pollutant control strategy for the polluted water body to obtain a new pollutant control strategy, replacing the pollutant control strategy with the new pollutant control strategy, iteratively executing steps of executing the pollutant control strategy and detecting the change information of the water body data of each of the different locations, until current water body data of each location meet a standard water body condition.

The utility model discloses an environment-friendly water treatment sample extractor which comprises a sample sampling part, a suction part and a stirring part, the suction part is fixedly arranged on the upper surface of a fixed bottom plate, and the stirring part can automatically stir sediments at the water bottom during water sampling; in order to solve the problems that in the prior art, common water sample sampling equipment can only sample a water body and cannot effectively sample pollution particles deposited at the water bottom when sampling work needing pollutant detection is carried out, a stirring part is designed, the stirring part and a sample sampling part are matched and synchronously used, so that the sampling efficiency is improved, and the sampling efficiency is improved. According to the environment-friendly particle pollutant sampling device, the stirring treatment can be automatically carried out when the environment-friendly particle pollutant sampling device goes deep into the water bottom for sampling, so that pollution particles deposited at the water bottom can be stirred, the particles are fully suspended, the pollution particles are simultaneously sampled during sampling, and the environment-friendly particle pollutant sampling device is particularly suitable for detecting and sampling environment-friendly particle pollutants.

The utility model relates to the field of sewage sampling, and discloses a sewage detection stratified sampling device, which comprises three sampling buckets, a support column and a sliding rod, the sampling buckets are internally provided with mounting cavities, the middle part of the support column is provided with a sliding chute, and the sliding rod slides in the sliding chute. The lower ends of the supporting columns penetrate through the sampling barrel and extend out of the sampling barrel, a plurality of sliding cavities are formed in the two sides, close to the sampling barrel, of the middle of the outer wall of a supporting column rod body, and connecting rods are fixedly connected to the two sides, close to the sampling barrel, of the middle of the outer wall of a sliding rod body. According to the stratified sampling device, when the stratified sampling device is used for sampling sewage, the stratified sampling device is in threaded connection with the filter screen on the outer wall of the threaded pipe, water plants, floating objects or other garbage in a sampling water area can be effectively prevented from blocking the water taking hole, the sampling process is ensured to be smoothly carried out, and in addition, the threaded connection mode is convenient to mount and dismount and simple and convenient to operate. And when the filter screen needs to be replaced or equipment needs to be maintained, a worker can quickly finish operation, so that the maintenance cost is reduced.

The invention relates to the technical field of water environment detection, in particular to a sampling device based on arid region water environment detection, which comprises a sampler, a protection unit is mounted on the lower side of the sampler, and a side suction unit is mounted on the protection unit. A plurality of elastic bottom-touching-preventing rods are adopted to support the sampling barrel, the water inlet pipe is prevented from being too close to a river bottom sediment layer, meanwhile, the water inlet pipe arranged laterally is adopted to extract a water sample in a side suction mode, disturbance of water flow to river bottom sediment is reduced, and the lower portion of the water inlet pipe is protected through an impurity blocking set; by means of the multi-stage device for preventing silt from being synchronously extracted, the normal sampling flow speed is maintained, meanwhile, it is avoided that too many impurities such as alkaline substances exist in a sampled water sample, and detection of the water body is affected, and the water body sampling detection accuracy is effectively improved. The inner cavity of the sampling barrel is divided into the two independent sampling cavities through the isolation plate, and the two piston extracting pieces are matched for extracting in sequence, so that independent collection of two water bodies with different depths can be completed through single-time lowering.

The present invention discloses a mobile water quality sampler for water quality detection and a method of using the same, which relates to the field of water quality sampling technology, and includes a mounting frame and a sampling bottle. The bottom end of the mounting frame is fixedly connected to a floating plate, and the outer wall of the floating plate is installed with a propeller. The mounting frame and the sampling mechanism are provided. The present invention sets a moving mechanism and a sampling mechanism. After the mounting frame is moved to a specified position, a square block moves one end of a rotating disk, and the second motor drives the square block to be inserted into a square slot; the third motor is started to drive the winding roller to rotate, and the winding roller lowers the support rope to drive the sampling bottle to move downward into the water body. When the sampling bottle moves to a certain depth, the sampling hole automatically opens for sampling operation; after the sampling is completed, after moving to the next location, the square block moves to one end of another rotating disk, and the sampling operation is performed again, which is convenient for sampling water bodies at different locations.

The invention relates to the technical field of sewage detection, in particular to an industrial wastewater sudden pollution emergency sampling detection device which comprises a detection box, an extraction unit for sampling water at different water levels is arranged on one side of the bottom of the detection box, and a drainage pipe for discharging detected water is further arranged at the bottom of the detection box. A rotating frame is rotatably mounted at the bottom of an inner cavity of the detection box through a motor, a central pipe is fixedly mounted at the top of the rotating frame, the extraction unit can extract wastewater at different depths in a multi-point manner, and when an additive needs to be added into the wastewater, the clamping assembly is in linkage with the feeding assembly, the additive is automatically and quantitatively added, volatilization, oxidation or microbial degradation is prevented, and the detection efficiency is improved. During direct detection, clamping and stirring of the clamping assembly are canceled to prevent precipitation, the process is simplified, the center pipe drives the rotating frame to stir, impurity sedimentation is avoided, the detection stability is guaranteed, manual intervention is reduced, and efficient and accurate analysis is achieved.

The invention discloses a water quality COD analysis device, and relates to the technical field of COD water quality detectors, the water quality COD analysis device comprises a COD water quality detector body, a calibration mechanism is arranged on the outer side of the COD water quality detector body, a wiping mechanism is arranged on the outer side of the COD water quality detector body, the calibration mechanism can detect a plurality of detection samples after sample water calibration equipment is utilized, and the wiping mechanism is arranged on the outer side of the COD water quality detector body. The wiping mechanism can wipe the surface of a test tube of a detection sample, the calibration mechanism comprises a first stepping motor, the outer surface of the first stepping motor is fixedly connected to the inner wall of the COD water quality detector body, the output end of the first stepping motor is fixedly connected with a turntable, and the outer surface of the turntable is fixedly connected with a plurality of same rectangular frames; the inner wall of each rectangular frame is rotationally connected with a rubber barrel, stains and water stains on the surface of the test tube of the detection sample can be cleaned by utilizing the wiping rings, and the problem that the detection efficiency is reduced due to the fact that the test tube of the sample to be detected needs to be manually wiped before detection is solved.

The invention relates to a portable hydrogen conductivity measuring device based on electrodeionization. The portable hydrogen conductivity measuring device comprises a sampling detection subsystem, an electrodeionization subsystem, a measuring subsystem and a processor, the sampling detection subsystem is communicated with the electrodeionization subsystem and the measurement subsystem and is used for controlling the temperature, the pressure and the flow of sample water flowing into the electrodeionization system; the electrodeionization subsystem is communicated with the measurement subsystem and is used for removing cations in the sample water; the measurement subsystem is communicated with the electrodeionization system and is used for accurately measuring the conductivity, namely the hydrogen conductivity, of the sample water subjected to EDI treatment in real time; and the processor is used for providing a stable excitation signal for the conductivity electrode, acquiring an original resistance or conductivity signal and a temperature signal of the electrode, executing a temperature compensation algorithm to obtain a hydrogen conductivity value at 25 DEG C, outputting a final result to the display screen, and transmitting the final result to an external system. The invention also discloses a corresponding measurement method, electronic equipment and a computer readable storage medium.

The utility model discloses a real-time water quality sampling device, and particularly relates to the technical field of water quality samplers, the real-time water quality sampling device comprises a box body, the inner bottom wall of the box body is provided with a fixing frame, the inner wall of a bearing ring is provided with an air cylinder, the inner wall of a first push rod is in sliding connection with an adjusting rod, and the inner wall of the adjusting rod is in bearing connection with a second transmission rod; an adjusting ring is fixedly connected to the outer wall of the second transmission rod, and a sampling bottle is mounted on the inner bottom wall of the placement disc. According to the real-time water quality sampling device, through the arrangement of the air cylinder, a second push rod and an adjusting ring, the problem that an existing real-time water quality sampling device cannot sample water quality at different time periods at the same depth according to requirements is solved, so that a worker cannot rapidly sample the same water quality at different time periods; the efficiency of sampling the same water quality at different time periods by workers is improved, and meanwhile, the accuracy of analyzing the same water quality at different time periods by subsequent workers is guaranteed.

The utility model provides a sample water control system for a hydrogen conductivity measuring system, which comprises a main electric regeneration ion exchanger and a standby electric regeneration ion exchanger which are arranged in parallel, the main electric regeneration ion exchanger and the standby electric regeneration ion exchanger are respectively connected with a chemical sampling water pipeline, an electromagnetic valve is arranged between the electric regeneration ion exchanger and the chemical sampling water pipeline, and the rear side of the electric regeneration ion exchanger is sequentially connected with a flow transmitter, a pressure transmitter and a first electric control valve; and the first electric control valve is connected with the hydrogen conductivity meter. According to the utility model, the two electric regeneration ion exchangers are used for replacing traditional cation exchange resin, and when a control system judges that the measured value of the hydrogen conductivity instrument exceeds the standard or the change speed of the measured value exceeds the limit, the standby electric regeneration ion exchanger is automatically switched to operate; and judging whether the ion exchanger fails or the water quality exceeds the standard according to the actual situation.

The invention provides a blueberry substrate cultivation pH value detection device, and relates to the technical field of pH value detection devices. A leakage control part is arranged above the detection part; a material soaking part is arranged above the leakage control part; an external control part is arranged above the material soaking part; the inner plug block is matched with the conical surface of a conical groove in the top of the communicating leak hole, contact type sealing is achieved, an outer adjusting ring and an inner adjusting frame are of an integrated connecting structure, an operator can drive the inner adjusting frame and a top cover frame to synchronously move upwards only by shifting the outer adjusting ring upwards, the communicating leak hole is communicated, sample water is conveniently conveyed and treated, the detection process is simplified, and the detection efficiency is improved. The blueberry substrate cultivation pH value detection device has the advantages that the blueberry substrate cultivation pH value can be conveniently detected, and the problem that due to the fact that sampling, proportioning, mixing, detection and other processes need to be operated and treated in various containers, the number of tools needed in the detection process is large, the steps are tedious, and detection treatment is inconvenient is solved.

The invention discloses an operation detection system of a converter pipeline and a control method of the operation detection system, and the system is applied to a converter. The operation detection subsystem comprises a pore plate which is arranged on the converter pipeline; one end of the sampling water pipeline is connected with the pressure tapping hole of the pore plate; the operation detection instrument is connected with the other end of the sampling water pipeline; the temperature sensor is arranged in an area near the sampling water pipeline; the heater is arranged in an area near the sampling water pipeline; the controller is used for acquiring the detection temperature of the temperature sensor; and controlling the heater based on the detection temperature, so that the pipeline temperature of the sampling water pipeline is greater than a preset first temperature threshold value. According to the invention, the technical problem of low detection accuracy of the operation detection instrument is solved.

The application relates to the technical field of sampling devices, in particular to a single-wall carbon nanotube sampling device convenient to carry, which comprises a sampling bucket, a containing cavity is formed in the middle of the sampling bucket, a sampling rod one and a sampling rod two are matched arranged on the sampling bucket, the sampling rod one and the sampling rod two are mutually inserted, and the device is characterized in that the device further comprises a buoyancy mechanism and an adjusting mechanism, a float ball of the buoyancy mechanism controls a one-way valve one, sampling is automatically realized after the sampling bucket reaches the middle position of a sampling water area, the adjusting mechanism is used for adjusting the sinking distance of the sampling bucket according to the depth of different water areas, an operator can deliver the sampling bucket to the relatively central water area on the bank of the water area to realize rapid and effective sampling, and rapid adjustment can be realized according to the depth of the water area.

This invention discloses a flow velocity adaptive simultaneous stratified algae sampler for different water depths, comprising a vortex compressor module, which includes a lower shell and an upper shell. The upper shell includes a top plate with a filter plate fixed to its outer periphery and a stationary vortex disk fixed to its bottom surface. An outlet is formed at the center of the top plate, and a continuous sampling structure is installed in conjunction with the outlet. A first waterproof motor is fixed inside the lower shell, connected to a moving disk, and a moving vortex disk that cooperates with the stationary vortex disk is fixed to the top surface of the moving disk. Both the stationary and moving vortex disks are made of filter plates. An inlet is formed on the upper shell, and solenoid valves are installed on both the inlet and outlet. A flow meter is also installed at the inlet. This invention can concentrate algae, thereby achieving continuous large-volume algae sampling, overcoming the shortcomings of existing sampling devices that are limited by container volume, resulting in small sample volumes and the inability to continuously sample and obtain dynamic change data.

The utility model discloses a multipath control water outlet detection device, which comprises a water storage tank, a test control pump, a first control valve body, a second control valve body, a third control valve body, a controller, a detector and a sampling port, and is characterized in that the water storage tank is connected with the test control pump, and the test control pump is connected with the detector through the first control valve body; a controller of the detection equipment for multi-path control water outlet controls a test control pump and a first control valve body to work so as to convey water in a water storage tank to a detector, the detector detects sample water and then conveys the sample water to a second control valve body, and the second control valve body and the second control valve body can convey the water into the water storage tank for recycling. In addition, the second control valve body can automatically open and close the material taking opening to convey sample water so as to allow workers to sample, the controller automatically controls detection, manual water pipe extraction, manual water drainage, manual timing, manual measurement and other operations are not needed, measurement and use are facilitated, and deviation caused by manual measurement is reduced.

The invention discloses an aquaculture water quality detection system, and relates to the technical field of water quality detection. Comprising a floating seat, a support and a collecting part are arranged on the floating seat, a hoisting mechanism is arranged at the top of the support, and a detection sampling mechanism is arranged on the hoisting mechanism; a drying mechanism, a removing mechanism and a collecting mechanism are arranged on the side face of the support. The detection sampling mechanism comprises a mounting cylinder, matching boxes are arranged on the inner side of the mounting cylinder in an array mode, filtering layer winding drums are rotatably arranged in the matching boxes, stirring matching frames are slidably arranged on the inner sides of the matching boxes, and a sampling mechanism is arranged in the mounting cylinder and used for sampling a water area; the device can be used for detecting the dissolved oxygen content of water, overcomes the problem of non-uniform distribution of the dissolved oxygen content, and can be used for synchronously treating floating impurities in water and replacing manual sampling operation so as to complete multi-item water quality detection.

The utility model relates to the technical field of water body detection, in particular to a sampling device for water body detection, which comprises a workbench, the top of the workbench is fixedly connected with a mounting box, and two sides of the top of an inner cavity of the mounting box are fixedly provided with driving motors; the output end of the driving motor penetrates to the outer side of the mounting box and is fixedly connected with a rotating plate, a lifting mechanism is arranged on the top of the rotating plate, storage mechanisms are arranged on the two sides of the top of the workbench, and the lifting mechanism comprises an extension plate. The water sampling device can sample water bodies in different areas at the same time, the driving motor drives the two samplers to rotate through the rotating plate in partial environments, the samplers can be located at different positions so that the samplers can sample different water bodies, and when the water sampling device is not used, the electric push rod can clamp and limit the samplers through the movable frame, so that the water sampling device is convenient to use. The sampler can be stably stored in the storage box, so that the parts are protected.

The invention discloses a fluid dynamic pressure-based pipeline type water quality in-situ monitoring device, which comprises: a joint, one end of which is fixed with a water pipe, and the joint is internally provided with a sampling water inlet pipe and a sampling water outlet pipe; the pressure compensation container is fixed with the other end of the connector and is divided into a low-pressure cavity and a high-pressure cavity by a partition plate, the low-pressure cavity is communicated with the water pipe through a sampling water inlet pipe, and the high-pressure cavity is communicated with the water pipe through a sampling water outlet pipe; the steady flow pool is provided with a plurality of monitoring sensors, the steady flow pool is respectively communicated with one ends of a plurality of pairs of steady flow water inlet pipes and steady flow water outlet pipes, the other ends of the steady flow water inlet pipes are respectively communicated with the low-pressure cavity, and the other ends of the steady flow water outlet pipes are respectively communicated with the high-pressure cavity; the pressurizing device is fixed with the pressure compensation container, and the pressurizing device can pressurize the water flow input by the steady water outlet pipe and can output the water flow through the sampling water outlet pipe. The device has the beneficial effects of being simple in structure, low in cost, convenient to use and high in working efficiency.

The utility model relates to the technical field of samplers, in particular to a water resource detection sampler which comprises a sinking base, a plurality of first threaded holes are formed in the sinking base, sampling pipes are arranged in the first threaded holes, threads are arranged on the outer walls of the sampling pipes, connecting ropes are arranged on the sampling pipes, and the connecting ropes are connected with the sinking base. A floating plate is arranged on one side of the sinking base, a plurality of second threaded holes are formed in the floating plate, threaded columns are arranged in the second threaded holes, first connecting rings are rotatably arranged on the sides, close to the sinking base, of the threaded columns, and a pull rope is fixedly arranged on the side, away from the sinking base, of the floating plate. And the data accuracy is ensured.

A control assembly for an appliance includes a control panel for the appliance. The control panel includes inputs for controlling the appliance. The control assembly includes a control circuit board coupled to the control panel. The circuit board configured to be operably coupled to working components of the appliance to control operation of the appliance based on the inputs from the control panel. The control assembly includes a detergent sensor configured to sense wash characteristics of water in the appliance. The detergent sensor includes a near infrared spectroscope (NIRS) for determining optical properties of a sample of the water. The detergent sensor performs a chemical analysis to determine the contents of the sample based on the optical properties. The control circuit board is configured to control the working components of the appliance based on the chemical analysis performed by the detergent sensor.

The utility model discloses a riverway water body sampling device which comprises a diving track and a fixing pile, one side of the diving track is fixedly connected with a fixing plate, a positioning notch is formed in the fixing plate, the inner wall of the positioning notch is in sliding connection with the fixing pile, and one side of the diving track is provided with a water body sampling structure. A lifting assembly is arranged in the diving track and is used for driving the water body sampling structure to move. The water body sampling structure is driven by the lifting assembly to enter a river channel to be sampled, so that the sampling barrel moves to a corresponding sampling height, and then the piston plate is driven to move between the inner walls of the sampling barrel under the action of the pneumatic piston pump; according to the water sampling device, water outside the sampling barrel enters the sampling barrel through the water sample inlet and outlet under the action of pressure, so that the sampling work of river water bodies with different depths is conveniently realized, finally, the sampled water body is lifted to the water surface by utilizing the lifting assembly again, and the sample water inside the sampling barrel is conveniently taken out.

This invention belongs to the field of water quality testing technology, and specifically relates to a water quality testing device for industrial circulating water. It includes a protective cylinder placed inside a water tank, and a climbing frame erected on the water tank to support the protective cylinder. It also includes several collection cylinders placed inside the protective cylinders with their upper openings open; a sampling cylinder movably placed inside the collection cylinders via a suspension frame; a supporting and guiding component placed inside the collection cylinders, with its water collection groove communicating with a water collection hole on the protective cylinder; and a guiding and venting component placed inside the sampling cylinders, allowing the sampling cylinders to communicate with the water collection groove of the supporting and guiding component through the guiding and venting component. This invention enables the water quality testing device to simultaneously sample water from different water layers within the water tank, and also to perform individual automatic sampling and testing of water from different water layers within the water tank, thereby more accurately detecting the water quality status of each layer within the water tank.

A secondary pollution prevention closed water taking device relates to the technical field of sampling and comprises a water taking machine body and a telescopic rod, a conical hole is formed in the top of the water taking machine body, a first water taking pipe is fixedly mounted at the bottom hole position of the conical hole, and a second water taking pipe is slidably mounted at the bottom of the first water taking pipe in an up-down penetrating manner; a sealing pressing plate is fixedly installed on the second water taking pipe, a compression spring is connected between the upper end face of the sealing pressing plate and the upper side wall of an inner cavity of the water taking machine body, a bottom plate is installed at the bottom of the water taking machine body, and a base is fixedly installed on the upper end face of the bottom plate. The test tube for direct detection is installed in the inner cavity of the water taking machine body, meanwhile, the leakproofness of the inner cavity is guaranteed, and sampled water is directly guided into the test tube, so that the test tube can be directly taken out and sent to be detected after water taking is completed, pollution of the sampled water in the secondary transfer process is effectively avoided, and detection data are greatly guaranteed.