91results about How to "Evenly sampled" patented technology

The invention relates to a cervix brush, comprising a sheath tube, a core pole, a scraper, villus and a guiding head; wherein, the scraper, the guiding head and the sheath tube are formed by integrated injection molding, the guiding head is arranged at the foremost end of the sheath tube, the scraper comprises six plastic strips which can be detached to triangles, the front end of the scraper is connected with the guiding head, the back end of the scraper is connected with the sheath tube and a easy folded groove is arranged between the connection and the scraper, the core pole is axially sleeved in the sheath tube and is slideable, the head of the core pole is fixed in the guiding head, the villus is cultivated at the front ends of the guiding head, the scraper and the sheath tube, the stress on the surface of the cervix from the six scrapers which can be furled and spread is uniform, in particular that the cells at area with high incidence of the cervical cancer from the one third part outside of the cervical canal to the external cervical orifice can be gotten by the cervix brush. The cervix brush has the advantages of small radial direction size, convenient operation and low manufacturing cost.

The invention discloses a portable minimally invasive sampling machine and application thereof. The portable minimally invasive sampling machine comprises an air compressor, an air conveying pipe, an arc-shaped milling cutter, a pneumatic motor, a swinging mechanism, an adjusting mechanism, a fixed support and a locking chain; the whole machine is fixed on a test sample to be sampled by the fixed support and the locking chain; the distance between the arc-shaped milling cutter and the surface of the test sample is adjusted through the adjusting mechanism; and the pneumatic motor and the swinging mechanism are driven by the air compressor respectively so that the arc-shaped milling cutter is driven to carry out efficient minimally invasive sampling on the surface of the test sample. According to the technical scheme, aiming at in-service equipment at a high temperature, the tiny test sample can be cut from the in-service equipment in an efficient and minimally invasive manner, and tissues of metal materials have no damages; and the portable minimally invasive sampling machine can also be applied to material sampling of a sensitive position which is difficult to sample and analyze, such as a welding line or a heat influence region, and equipment and a pipeline without damage sampling conditions, and furthermore, the difficulty of estimating material performances of the in-service equipment is solved.

The invention discloses a soil sampler for biological soil enzyme activity determination. The soil sampler comprises a handheld rod and a limiting frame; the lower end of the handheld rod is fixedly connected with the limiting frame; a movable sleeve is fixedly connected to the middle of the limiting frame; the lower end of the handheld rod is symmetrically connected with one ends of two telescopic rods; when a motor rotates, a rotating shaft can be driven to rotate, so that a sampling cylinder is driven to move downwards; the sampling cylinder can move downwards better due to the existence ofa spiral blade, so that the sampling can be performed better, the manual sampling is facilitated, and the labor force is reduced; the lower end of the spiral blade and the lower end of the sampling cylinder adopt conical structures, and in the sampling process, the sampling cylinder can enter the soil more easily, so that the sampling efficiency is improved; after the sampling is finished, in theprocess that a scraping plate moves downwards, a soil sample is pushed downwards, so that the soil sample is pushed out; and meanwhile, the inner side wall of the sampling cylinder is scraped by thescraping plate so as to ensure that the next sampling can be very smooth.

The invention relates to a data mining information publishing platform. According to the invention, two groups of large-pitch threaded moving cylinders mounted in a cylinder are ingeniously utilized.Soil samples are respectively collected. The sampling barrel rotates in the downward moving and sampling process. Sampling efficiency is higher, the change of the vertical position of the cylinder isrealized through the lifting device on the bracket. The second motor realizes transposition of the cylinder. In the transposition process, the blocking device on the right side blocks the outlet end of the sampling cylinder by utilizing a telescopic blocking plate. The falling of the sample in the advancing process of the device is avoided. The cleaning device on the left side is used for cleaningthe sampling barrel which is transposed downwards. The sample detection device automatically detects obtained sample, and information acquisition and data sharing of detection data are realized through signal receiver. the structure is ingenious, the sampling cylinders in the two groups of the moving cylinders alternately perform the sampling work, the automation degree is high, the detection data precision is high, the data sharing can be synchronously performed, the practicality is strong, and the apparatus is worthy of promotion and use.

Belonging to the technical field of environmental pollution detection, the invention relates to a contaminated site sampling device and a seepage pollution detection system. The sampling device comprises: a sampling body, a liquid collection tank, a vacuum pumping component, a pressurization component and a sampling bottle. The sampling body is a porous ceramic structure, and the liquid collection tank is an internally enclosed cavity structure, is arranged above the sampling body and is communicated with the sampling body through an infusion tube. The vacuum pumping component is communicated with the liquid collection tank through a pipeline. The pressurization component is communicated with the liquid collection tank through a pipeline. The sampling bottle is communicated with the liquid collection tank through a sampling tube. The detection system comprises a plurality of sampling devices. The sampling bodies and liquid collection tanks in the plurality of sampling devices are fixed at a plurality of sampling points set at the contaminated site, and the plurality of sampling points are located at different depths. The contaminated site sampling device and the seepage pollution detection system provided by the invention can perform long-term continuous sampling and monitoring on contaminated soil, and have the advantages of comprehensive monitoring information, convenient installation and sampling, real-time and efficient monitoring, and accurate seepage detection position.

The invention relates to a papermaking fiber image measuring method. The instrument adopted in the method is a papermaking fiber analyzer consisting of a biological microscope of which the ocular lens is replaced by a digital video, a microcomputer, a display connected with the microcomputer, and a papermaking fiber analyzing program arranged inside the microcomputer. The measurement item comprises image method measurement of length and width of the papermaking fiber, image method measurement of papermaking fiber ratio and measurement of papermaking fiber plant material cell wall and cavity ratio. The invention provides filmmaking technology by a gel process, and a glass slide clamp capable of accommodating large-scale glass slides. The papermaking fiber image measuring method has the advantages of simpleness, practicability and accurate result.

The invention provides a device and a method for measuring transmittance and transmittance uniformity of a hemispherical optical element. The device comprises a supercontinuum source, a monochromator, an optical attenuator, a beam splitter, a reference light detector, a diaphragm, a multi-dimension mechanical adjusting rack, a to-be-measured hemispherical optical element, a stepper motor controller, a test light detector, a data collector and a computer. The device and the method have the following advantages: the technical problem that the transmittance and transmittance uniformity of the hemispherical optical element cannot be measured accurately with the traditional method is solved; measuring points are uniformly sampled, and the transmittance uniformity of the hemispherical optical element can be reflected truly; the device is high in automation degree, and one-key measurement can be realized.

The invention provides an adjustable depth sampling frame structure for environmental engineering water quality monitoring, which comprises a base bracket, a gearbox and sampling pipe heads. The top of the base bracket is fixedly connected with one set of gearbox; a rotating shaft of the gearbox is coaxially and fixedly connected with one set of gear; the lower parts of telescopic rods are tightlyconnected with a set of sampling pipe heads by pipe brackets; and the sampling pipe heads are connected with sampling pumps. By arranging a gear and rack drive mechanism and a driving belt drive mechanism and arranging sliding connection plates and fixed connection plates, when four sets of sampling pipe heads regulate a depth, distances among the sampling pipe heads can be guaranteed to be equal, so that a water body can be uniformly sampled, thereby improving sampling accuracy, reducing an error and facilitating accurate detection management on water quality; and the adjustable depth sampling frame structure can be driven by the gearbox, so that automatic regulation of the sampling depth is implemented and manual labor is reduced.

The invention belongs to the technical field of medical instruments, and particularly relates to a gynecological tumor sampling device. The device comprises a cylindrical shell; a supporting pipe is fixedly connected to the front face of the cylindrical shell; the end part of the supporting pipe fixedly communicates with a sampling head; the inner wall of the supporting pipe is slidably connectedwith a plugging piston; a first screw rod is rotationally connected to the back surface of the plugging piston; an annular moving disc, a supporting rod, a mounting ring, a mounting cavity, a tool rest, an air cylinder, a blade, a moving sliding block, a moving sliding groove, a second screw rod, a supporting plate, a follow-up gear and a driving gear are arranged, and the position of the blade can be flexibly adjusted, so that the sampling head is prevented from being blocked during sampling; and after sampling is completed, the blade can be moved and gets close to the sampling head, an opening of the sampling head is pressed for partial plugging, and pressing is carried out, so that a tumor block is prevented from sliding out of the sampling head, and smooth sampling is guaranteed.

The invention discloses a flue gas sampling and mixing device which comprises a sampling pipe and a flue gas mixer, wherein the sampling pipe comprises a sampling pipe body; one end of the sampling pipe body is an open end and the other end of the sampling pipe body is a sealed end; a plurality of sampling holes are formed in the sampling pipe body at intervals in the axial direction; the pore diameters of the sampling holes are sequentially increased from the open end to the sealed end; the flue gas mixer comprises a plurality of gas mixer chambers separated by porous baffles; one of the gas mixer chambers is provided with a mixing gas outlet; mixing air inlets connected with the open end are formed in the side walls of other gas mixer chambers; the pore diameters of the porous baffles are sequentially decreased in the flue gas flowing direction in the flue gas mixer. The flue gas sampling and mixing device can sample at multiple points and ensures that the sampled flue gas can be mixed uniformly and truly represent the constituent and concentration of the flue gas in a gas duct.

The invention provides a material taking device. The material taking device comprises a metering machine material bin, and a conveying mechanism used for conducting material taking on the metering machine material bin. A material level sensor used for detecting the height of the material position is arranged at the upper end of the metering machine material bin. The conveying mechanism comprises an outer cylinder, a spiral rod arranged in the outer cylinder and matched with the outer cylinder, and a motor used for driving the spiral rod to rotate. One end of the outer cylinder is fixedly connected with the motor, and the other end of the outer cylinder is fixedly connected with the metering machine material bin. An opening corresponding to the port of the outer cylinder is formed in the metering machine material bin. The spiral rod extends into the metering machine material bin through the opening. A discharge pipe which is communicated with the outer cylinder and extends downwards is arranged on the side face of the outer cylinder. A sampling bag is arranged at the discharge end of the discharge pipe. The material taking device is simple in structure and convenient to operate, a threaded rod and the outer cylinder are used in cooperation for rotating materials out of the metering machine material bin, the materials are collected through the discharge pipe, accuracy is high, and sampling values are uniform.

The invention relates to an agricultural soil sampling apparatus, and concretely relates to a handheld soil in situ sampler. The sampler comprises a first handle, a sampling rod, a ring cutter bit, a soil pushing rod and a soil cleaning piston, wherein one end of the sampling rod is connected with the first handle, and the other end of the sampling rod is connected with the ring cutter bit; the sampling rod has a hollow internal structures, the soil cleaning piston is inserted into one end of the sampling rod and moves back and forth along the length direction of the sampling rod, the soil pushing rod is inserted into the other end of the sampling rod, and the soil pushing rod is pulled out of the sampling rod during sampling; the sampling rod is provided with a sampling groove convenient for cleaning residual soil through the soil pushing rod, and a soil sample sampled by the sampling rod is pushed through the soil cleaning piston, and is collected. The sampler has the advantages of simple structure, time and labor saving, convenient carrying, safe and convenient soil sampling, guarantee of in situ soil sampling, uniform sampling, reaching of soil sampling requirements.

The invention discloses an air flow sampling device for a pulverizing system. The air flow sampling device comprises a sampling pipeline, an air flow pretreating device and an air flow terminal analysis device, wherein the sampling pipeline is connected with the pulverizing system; one end of the air flow pretreating device is connected with the sampling pipeline, and the other end of the air flow pretreating device is connected with the air flow terminal analysis device; and the sampling pipeline is provided with a heating insulation device. According to the invention, the sampling pipeline is provided with the heating insulation device, so that air flow in the sampling pipeline is prevented from being subjected to dewing phenomena, and dewing does not occur to the interior of the sampling pipeline, therefore, coal powder contained in the air flow can not harden on the surface of the sampling pipeline, thus the smoothness of sampling the air flow at the outlet of the pulverizing system is ensured; and different heating temperatures can be set according to different coal powder moisture contents, and the insulation device is made of an environmentally-friendly material, can achieve heating insulation and dewing-preventing effects and is energy-saving and environmentally-friendly.

The invention discloses a reinforced concrete buried pipeline anticorrosive coating detection device based on man-machine interaction, which relates to the technical field of pipeline construction, and solves the problems that an existing pipeline anticorrosive coating detection device cannot accurately reflect the thickness condition of a pipeline anticorrosive coating due to a small number of sampling points and is high in labor intensity of workers, troublesome in operation, time-consuming, labor-consuming and low in detection efficiency due to manual detection. The device comprises a base;the top of the front end face of the base is slidably connected with a set of sliding seats; a set of supporting sliding seats are slidably connected to the rear portion of the right side of the base; a set of supporting adjusting driving lead screws are rotationally connected to the rear portion of the right side of the base; and a set of supporting adjusting driven lead screws are rotationallyconnected to the rear portion of the left side of the base. The device is good in uniformity of sampling sample points, guarantees the measurement precision, can better reflect the thickness of an anticorrosive coating, can achieve the supporting and measurement of pipelines with different diameters, is very good in universality, is convenient to use, is simple in operation, and is high in detection efficiency.

The invention discloses a puncture sampler for medical oncology, which belongs to the technical field of medical treatment, the puncture sampler comprises a cylinder body, a needle seat is arranged onthe left side surface of the cylinder body, a puncture sampling needle is arranged in the needle seat, a connecting pipe is arranged on the upper surface of the cylinder body, the connecting pipe iscommunicated with a positive pressure bag through a connecting piece, and a bearing is arranged on the right side surface of the cylinder body. The invention discloses the puncture sampler for medicaloncology, the positive pressure bag, an air valve, the cylinder body, a piston plate, the puncture sampling needle, a threaded cylinder, a threaded column and a rotating rod are matched with one another; the piston plate moves to the right side of the connecting pipe; by means of the sampler, the situation that the piston plate moves by a large margin during misoperation can be prevented, the sampling process is conducted smoothly to a certain extent, and meanwhile the process that the tissue is taken out of the puncture sampling needle is convenient.

The invention discloses an endometrium sampling device and belongs to the field of medical apparatus and instruments. The endometrium sampling device comprises a lead-in pipe and a sleeve core, the lead-in pipe is arranged on the sleeve core in a sleeving mode, the front end of the sleeve core is provided with a plug, the tail end of the sleeve core is provided with a sleeve core holding handle, the front end of the sleeve core is provided with an anti-twist sampling segment, and the anti-twist sampling segment is fixedly connected with the plug. The endometrium sampling device is uniform in sampling, a reliable diagnosis result can be obtained, the pain of a patient is reduced, and endometrium sampling device has good application and popularization value.

The invention discloses a method for precisely quantitating the oil content in hogwash oil. The method comprises: S1, measuring the weight m[container] of a measuring container by a weighing tool; S2,adding a certain amount of preheated hogwash oil to the measuring container, and measuring the total weight m[total] of the measuring container containing the hogwash oil by the weighing tool; S3, placing the measuring container containing the hogwash oil in a centrifugal separator, and carrying out centrifugal separation; S4, obtaining the oil liquid in the measuring container, and measuring theweight m[oil] of the oil liquid by the weighing tool; and S5, obtaining the oil content in the hogwash oil according to a formula n=m[oil] / (m[total]-m[container])*100%. According to the present invention, the design of the technical scheme is exquisite; the layering of the oil, the water and the solid in the hogwash oil can be rapidly achieved by using the centrifugal separation principle so as to effectively extract the oil liquid in the uppermost layer, such that the oil content in the hogwash oil can be precisely calculated through the formula, the accuracy is high, and the data is quantified so as to establish the foundation for the rapid determination of the oil content in the hogwash oil and provide the effective basis for the purchaser in the cost determination.

The invention discloses a medium-thick plate flame cutting sampling device and a sampling method thereof, belonging to the sampling equipment. The medium-thick plate flame cutting sampling device also comprises a pit formed in the bottom surface of a sampling station, wherein a ground roll for supporting and rotating a steel coil is arranged in the pit, a pulling steel rope is arranged on the ground at one side of the pit and is perpendicular to the axis of the ground roll, a guardrail and a baffle are arranged in the pit above a driving motor of the ground roll; a flamer, an air wrench and a pneumatic packer are suspended at the periphery of the guardrail, and the baffle is matched with the pit. The medium-thick plate flame cutting sampling device has the advantages of simplifying equipment required by sampling, having convenience and rapidness in the whole sampling process, improving the working efficiency, reducing the labor intensity and saving the production cost; the whole tail plate is pulled by the pulling steel rope after being cut, the tail plate can incline to the ground slowly, the potential safety hazard is eliminated, then the tail plate of the steel coil can automatically restore under the action of the ground roll, and the whole steel coil cannot be loosened, thereby bringing convenience to the follow-up rebinding and ensuring smooth process of the production.

The invention discloses a sampling method of a solution method for asphalt component separation. The sampling method comprises the steps that a round-bottom flask is weighed; matrix asphalt is added to the round-bottom flask; activated normal heptane is added to the round-bottom flask; heating and mixing are conducted to allow the matrix asphalt to be sufficiently dissolved in activated normal heptane; the matrix asphalt is boiled, transferred to a dark place for standing, and filtered with filter paper to form a filtrate; the filtrate is subjected to constant volume with activated normal heptane; a plurality of parts of isometric filtrate subjected to the constant volume are measured; reduced pressure distillation is conducted for removing activated normal heptane; and then corresponding parts of asphaltene-free asphalt samples are obtained. The sampling method solves the problems that the sampling is inaccurate in the existing asphalt component separation sampling, and the aging is caused by repetitive heating of the asphalt. With the adoption of the sampling by the solution method, multiple parts of asphalt samples for a component separation experiment can be obtained once; the operation is simple; the sampling is uniform; the experiment efficiency and the accuracy and reliability of an experiment result are improved; and pollution to experiment instruments is reduced.

The invention discloses a splitter for a sample preparation system. The splitter comprises a box body (1), wherein the top of the box body (1) is provided with a feeding port (1-1); one side of the bottom of the box body (1) is provided with discharging port (1-2) and the other side of the bottom of the box body (1) is provided with a sampling port (1-3), a revolution component (3) which is disposed in the box body (1) through a rotation shaft (5), wherein the rotation shaft (5) is transmittedly connected with a motor (2) disposed out of the box body (1); and sampling groove (4) uniformly disposed at the edge of the revolution component (3) and with the opening facing outward. The discharging port (1-2) is corresponding to a blanking area of the feeding port (1-1); and the sampling port (1-3) is corresponding to a tipping area of the sampling groove (4). The splitter is simple in structure style, small in size, light in weight, uniform in sampling and stable in performance, has no phenomena of material-splashing, material leakage or dust pollution and can significantly increase sample preparation precision.

The invention is applicable to the technical field of harbor port channels and coastal projects, and provides a harbor basin simulation device and a testing method thereof. The harbor basin simulationdevice comprises a harbor basin, a control center, a wave maker, a current making device, a mobile platform, a sampling device, a sand adding device, a shooting device, a water inlet control valve and a drainage control switch. According to the harbor basin simulation device and the testing method thereof, through the current making device, the change situation of rising and falling tide and flowspeed of water current within a set time can be achieved; through the movement of the sampling deice on the mobile platform, sampling of sand at any position in the harbor basin can be achieved; through the movement of the sand adding device on the mobile platform, sand adding at any position of the harbor basin can be achieved; through the movement of the shooting device on the mobile platform,any position of the harbor basin can be shot and monitored, and thus waves, tides and other physical parameters and the evolution situation of tidalflat landform features can be monitored in pixel time sequences. Testing data measured by means of the testing method is precise and usable.

The invention discloses a lake water quality sampling unmanned aerial vehicle based on screen effective sampling. The problem that sampling suffers failure because the water quality sampling efficiency of a target water area is low, potential safety hazards exist and a sampling water inlet pipe is easy to block in the prior art is solved. The lake water quality sampling unmanned aerial vehicle based on the screen effective sampling comprises an unmanned aerial vehicle main body, landing gears, a wing, a balancing wing, a positive-negative rotating motor, a winding box, a rotating shaft, a cable, a cable inlet and outlet port, a water quality sampling bottle, a cooling fan, a water quality sampling bottle main body, a sample water inlet pipe, an air outlet pipe, a drop-weight lead block, awater inlet pipe solenoid valve, an outlet air solenoid valve and a screen; the screen comprises a cylindrical screen pipe, a first screen piece and a second screen piece; the outer end of the screenpipe is bent outwards to protrude to form a circle of fixing ring; and the fixing ring is connected with the end part of the inlet end of the sample water inlet pipe through two or more equally-spacedbolts. According to the lake water quality sampling unmanned aerial vehicle based on the screen effective sampling, water quality sampling can be carried out on the target water area on the bank or in places far away from uncharted waters; and therefore, the lake water quality sampling unmanned aerial vehicle based on the screen effective sampling is efficient and safe and achieves smooth sampling; and sampling failure caused by blockage of the water inlet pipe can be effectively prevented.

The invention discloses a gas hydrate sampling and analyzing device and a method. The device comprises a hydrate generation kettle, a sampling module, a drive control module, a sample decomposition module, a weighing analysis module and a vacuumizing module, wherein a stirrer is arranged in the hydrate generation kettle; a gas inlet pipe and a liquid inlet pipe are connected to the top part of the hydrate generation kettle; the sampling module is formed by a transparent high pressure resistant resin glass tube, an upper compression piston, a lower compression piston, an upper hydraulic linkage shaft, a lower hydraulic linkage shaft and a sample delivery pipe; the weighing analysis module comprises an electronic analytical balance, a gas chromatograph and relevant connecting pipelines and components; the drive control module comprises a compression piston, a drive linkage shaft, a hydraulic driver, a spiral elevator, a control computer and the like; and the vaccumizing module is formedby a vacuum pump and relevant connecting pipelines and components. Any height space in a reaction kettle can be sampled with any volume, and any phase state of gas phase, solution phase, hydrate slurry phase and hydrate phase in a hydrate reaction system can be sampled and analyzed.

The invention provides a land ecosystem carbon cycle research sampling device, which belongs to the technical field of soil detection, and comprises a soil sampling cylinder body, a soil sampling handle, a pedal plate, a movable cover plate and a movable cover plate semi-automatic opening device, wherein a pedal is fixedly connected to the top end of the soil sampling barrel, a soil sampling knifeis fixedly connected to the bottom end of the soil sampling barrel, a sampling window extending along the axis of the barrel is formed in the side wall of the barrel, and scale marks for displaying the sampling depth are engraved in the outer wall, close to the sampling window, of the soil sampling barrel; the center of the upper end surface of the pedal is fixedly connected with a soil samplinghandle through a connecting rod, and the soil sampling handle is located right above the pedal; the upper surface and the lower surface of the soil sampling handle are both fixedly connected with a plurality of anti-skid rubber protruding strips, the sampling window is tightly covered with a movable cover plate, and the movable cover plate is connected with the pedal through a movable cover platesemi-automatic opening device, so that soil can be sampled at any depth, the accuracy of experimental results is improved, and smooth sampling is facilitated.

The invention belongs to the technical field of radiation detection, and relates to an oxidized gel for shallow layer sampling of radioactive contaminated metals and a preparation method of the gel. The oxidized gel comprises the following components in percentage by weight: 5-15% of a gel base material serving as a gel framework material, 5-10% of a surfactant, 0.5-5% of a thixotropic multiplier,3-20% of a strong oxidant, 3-20% of acid and the rest of water. The oxidized gel used for shallow layer sampling of radioactive contaminated metals can be used for shallow layer sampling of radioactive contaminated metals more accurately, smoothly, controllably and intuitively, and radiation damage to operators in the sampling process is reduced.

The present invention discloses a soil sampling device based on environmental protection detection. The soil sampling device comprises a base, connecting rods, a mounting plate, a sampling mechanism,a drilling mechanism, an adjusting mechanism, fixing blocks and universal wheels, the multiple fixing blocks are fixed to the lower end of the base, the universal wheels are mounted at the lower endsof the multiple fixing blocks, and the multiple connecting rods are fixed to the upper end of the base; and the mounting plate is fixed to the upper ends of the multiple connecting rods, the adjustingmechanism is arranged between the mounting plate and the base, and the sampling mechanism and the drilling mechanism are mounted on the adjusting mechanism. According to the soil sampling device, soil can be fixed in the sampling process, and it is avoided that part of the soil falls off in the extraction process, so that the detection result is inaccurate.

The invention relates to the technical field of pesticide residue detection, and specifically relates to a pesticide residue detection device. The device comprises a crushing chamber, a detection solution storage tank, a first pipeline, an external barrel, a magnetic fluid device support frame, a detection container, a hollow shaft magnetic fluid sealing device, a discharging device, a vortex tube, an air pump, a harmonic tank and a second pipeline, an outer wall of the harmonic tank and an inner wall of the external barrel are connected in a sealing manner, the bottom of an inner cavity of the harmonic tank is provided with the discharging device, one end of the discharging device penetrates out of the outer walls of the harmonic tank and the external barrel in sequence and is connected with the hollow shaft magnetic fluid sealing device, the magnetic fluid device support frame is arranged under the hollow shaft magnetic fluid sealing device, and one end, far from the discharging device, of the hollow shaft magnetic fluid sealing device is connected with the detection container through a bending pipe. According to the device, detection fluid is fully stirred, the sampling is uniform, and detection results are accurate.

The invention discloses an unmanned aerial vehicle capable of realizing smooth sampling of lake water based on inlet and outlet pipes. The unmanned aerial vehicle provided by the invention overcomes the problems of low sampling efficiency, potential safety hazards and unsmooth sampling in water sampling of a target water area in the prior art. The unmanned aerial vehicle comprises a main body of the unmanned aerial vehicle drone, an undercarriage, a wing, a balance wing, a forward-and-backward rotating motor, a winding box, a rotating shaft, a cable, a cable inlet and outlet and a water sampling bottle, wherein the water sampling bottle comprises a water sampling bottle main body, a sample water inlet pipe, an air outlet pipe vertically arranged on the top of the water sampling bottle body, and a drop-weight lead block fixed on the bottom of the water sampling bottle main body; the sample water inlet pipe and the air outlet pipe are respectively provided with a water inlet pipe solenoid valve and an air outlet solenoid valve both in functional connection with an unmanned aerial vehicle control system; and a screen mesh is arranged at the inlet end of the sample water inlet pipe. The unmanned aerial vehicle of the invention has the advantages of simple structure, scientific and reasonable design and convenient use; and operators can sample the water in a target water area on theshore or away from unknown waters, and sampling is efficient, safe and smooth.

The invention discloses a sediment sampling device for ocean engineering, and relates to the technical field of sediment sampling devices, the sediment sampling device comprises a device rack, the side wall of the device rack is connected with a plurality of winding drum supports, and the winding drum supports are provided with sampling device hanging coil assemblies used for sampling and collecting samples; and a swing reducing unit capable of reducing the sampling swing is mounted on the sampling device lifting coil assembly. According to the automatic sediment sampling device for the deep sea area, unwinding is conducted by rotating the hoisting and winding rotating wheel, the sediment sampling barrel is lowered to the seabed, then automatic drilling and sampling sealing are conducted through the sediment sampling barrel, and therefore the automatic sediment sampling work of the deep sea area is completed; the influence of underwater water flow on the lifting coil assembly of the sampling device is reduced, so that the sampling position is more accurate, and the position of a sample in the seabed can be judged, thereby facilitating accurate sampling.