40results about How to "Accurate sampling" patented technology

The utility model provides a granary grain storage sampling detector which comprises a sampling pipe, the lower end of the sampling pipe is closed, the side wall of the sampling pipe is provided with a first inlet, a sample separation switching pipe is arranged in the sampling pipe, two grain inlet channels and an air exchange channel which penetrate through the two ends are arranged in the sample separation switching pipe, the lower ports of the two grain inlet channels are blocked by net plates, the two grain inlet channels are provided with second inlets, and the first inlet is communicated with the air exchange channel; a gas baffle is arranged on the inner wall of the sampling pipe, is positioned below the first inlet, and can block the lower port of one grain inlet channel when the second inlet of the grain inlet channel coincides with the first inlet; the sampling machine comprises a main body, a sampling pipe joint and an air exhauster arranged on the main body, two chambers are arranged in the main body, a grain feeding butt joint hole and a ventilation butt joint hole are formed in the sampling pipe joint, the two grain feeding butt joint holes are communicated with the two chambers, a nut is rotationally connected to the outer side of the sampling pipe joint, and the nut is in threaded connection with the upper end of a sampling pipe. The two grain inlet channels of the sampling detector are used for sucking grains and emptying the grains respectively, and the sampling pipe does not need to be pulled out through alternate use.

The present application relates to sampling detection technical field, specifically, a kind of sampling device of particulate matter, including vertical cuboid cylinder and the discharge valve of being located in cuboid cylinder lower end opening;Rectangular discharge hole that is communicated with cuboid cylinder interior is opened in the front side outer wall of cuboid cylinder, further include the feed valve for closing cuboid cylinder upper end opening and with rectangular discharge hole each other cooperation;Feed valve includes fixed semicylinder that is transversely fixed in the rear side inner wall of cuboid cylinder and dynamic semicylinder that is transversely and rotatably connected in rectangular discharge hole and is parallel to fixed semicylinder and is arranged;The radius of fixed semicylinder and the radius of dynamic semicylinder each other cooperation, when the lower edge of dynamic semicylinder and the arc surface outer wall of fixed semicylinder tangent, the plane outer wall of dynamic semicylinder is set up and is inclined distribution with low front high up;The present application simplifies the operation process to reach the effect of time-saving and labor-saving, to improve work efficiency and greatly facilitate use.

The invention relates to the technical field of high-pressure mineralization reaction experimental equipment, and discloses a continuous sampling double-cabin structure reaction device and method, the continuous sampling double-cabin structure reaction device comprises a reaction cabin, a sampling cabin, a rock core pushing system, a liquid injection system, a gas injection system, a liquid phase acquisition system, a gas phase acquisition system, a monitoring system and a control system, the sampling cabin is arranged at the top of the reaction cabin; a gate valve is arranged between the sampling cabin and the reaction cabin; the rock core pushing system is arranged in the reaction cabin in a lifting manner and is used for bearing a to-be-reacted rock core and pushing the rock core to the sampling cabin; the liquid injection system, the gas injection system, the liquid phase acquisition system, the gas phase acquisition system and the monitoring system are all connected with the reaction cabin; the control system is electrically connected with the rock core pushing system, the liquid injection system, the gas injection system, the liquid phase acquisition system, the gas phase acquisition system and the monitoring system, and is used for maintaining a pressure value in the reaction cabin. According to the invention, sampling requirements of a gas phase, a liquid phase and a solid phase are taken into consideration, high-pressure mineralization reaction experiment requirements are met, and sampling reliability and data accuracy are improved.

An installation box body is fixedly installed on an installation platform, an opening is formed in the upper portion of the installation box body, a clamping box clamped in a sliding mode is arranged on the side face of the installation box body, a positioning structure is arranged on the opposite side of the installation box body, a clamping groove for vertically clamping the particulate matter sampling head is formed in the clamping box, and the particulate matter sampling head is arranged in the clamping groove. The size of the opening is the same as the size of the clamping groove, a movable supporting table is movably mounted on the clamping box and located in the clamping groove, a cutting structure is arranged on the side wall of the mounting box and located above the clamping groove, and a downward-pressing driving device for downward pressing the particulate matter sampling head and driving the particulate matter sampling head to rotate is arranged above the clamping box; the side wall of the mounting box body is provided with a dismounting through groove which penetrates through the mounting box body and meanwhile penetrates through the clamping box on the same side to be communicated with the clamping groove, and a telescopic clamping jaw is telescopically mounted in the corresponding direction of the dismounting through groove. According to the device, the aluminum foil compression ring can be automatically peeled off after the particulate matter sampling head is clamped, so that the stable disassembly of the filter membrane is ensured, and the sampling accuracy is ensured.

The utility model discloses a new pollutant biological toxicology analysis and examination processing device relates to biological toxicology examination technical field, and this new pollutant biological toxicology analysis and examination processing device, including organism, is symmetrically installed with multiple groups of slideway at the both sides inner wall of organism, and each group slideway is assembled with the slide that can slide, and is fixed with the matched circular platform on the slide, and the center position of each circular platform is provided with a rotatable rotating lever, and the bottom of rotating lever is connected with the turntable, and the turntable is annularly distributed with a plurality of container grooves, and the top of rotating lever is assembled with sealing assembly, is used for the sealed processing of the sample container that is placed in the container groove. The utility model discloses through setting up the slide that can slide, rotating turntable and corresponding sealing door, has realized the convenient placement, taking out and positioning of sample container, has promoted the operation efficiency, security and the stability of experimental environment.

The utility model provides a kind of liquid sampling measurement detection device, it is related to sampling measurement detection technical field, including sealing piston, the laser ranging sensor of the position of its position being detected is arranged in the one side of sealing piston, the sampling indicating buoy made of waterproof material is arranged in the other side of sealing piston.The utility model has the advantages that the position of sealing piston is adjusted using the change of internal air pressure of sampling tube, and the liquid is extracted to the inside of sampling tube using the air pressure change generated by the movement of sealing piston, so that the liquid entering the inside of sampling tube drives sampling indicating buoy to move, the position of sealing piston is detected using laser ranging sensor, and the interval between sealing piston and sampling indicating buoy is detected using deviation interval sensor, the difference between the two intervals can accurately judge the liquid volume of sampling, so as to more accurately sample and improve the accuracy of detection results.

The utility model discloses a water reducing agent concentration detects with sampling device, including empty cylinder, the empty cylinder outer surface fixedly connected with the connecting box, and the empty cylinder top insertion has the piston rod, and the connecting box is away from the piston rod one side and is equipped with the window, and the piston rod bottom fixedly connected with the piston main part, and the connecting box inside slide connection has the ration sampling mechanism, and the connecting box one side fixedly connected with the check valve mechanism, and the ration sampling mechanism includes the extrusion board, rubber block, spring no.

The invention belongs to the technical field of sampling devices, and discloses a sampling device for liquid medicine detection and a method thereof.The sampling device comprises a spherical medicine storage body, the lower portion of the spherical medicine storage body is communicated with a liquid suction pipe, a top pipe is arranged above the spherical medicine storage body, and a limiting plate is rotationally installed between the top pipe and the spherical medicine storage body in a sealed mode; the top pipe and the spherical medicine storage body can be isolated and sealed through the limiting plate, a liquid taking assembly is fixedly installed in the center of the top pipe and vertically extends to the bottom end of the interior of the liquid suction pipe, extraction and discharging of medicine liquid are completed through rotation, and a stirring assembly used for homogenization pretreatment of the medicine liquid is rotationally installed at the upper end of the top pipe. A swing assembly capable of expanding the stirring range is integrated on the stirring assembly, and a driving device used for providing power and achieving function switching is arranged on the top pipe; the liquid medicine stirring device is simple in overall structure, can efficiently and uniformly stir liquid medicine which is easy to layer and high in viscosity, eliminates stirring dead angles, and improves the using effect.

The utility model provides a kind of food production sampling device, belong to food sampling equipment technical field, including the wall breaking head of sampling cylinder front end setting, sampling cylinder is provided with multiple first sampling port along its axial direction, sampling tube is rotatably provided in sampling cylinder, sampling tube is provided with multiple second sampling port along its axial direction, one stop sheet is arranged between two second sampling ports, stop sheet and sampling tube inner wall are slidably arranged, the end of sampling tube away from wall breaking head is provided with rotating part, the utility model separates by rotating torsion ring and makes external thread head and sampling tube, at this time, the rice material of lower depth can be taken out, and at the same time, the external thread head after disassembly is blocked at the second sampling port away from wall breaking head end, by pushing push rod, multiple stop sheets are synchronously moved, so as to push out the rice material of middle depth, finally, the rice material of upper depth is taken out, so that the food of upper, middle and lower layers can be accurately sampled and detected, so as to improve the accuracy of food sampling device sampling.

The utility model relates to a solar plankton automatic collector which comprises a plankton collecting net, a water outlet pipe, a net bottom collecting pipe, a solar panel, a circuit module, a support, a water pump, a water collecting pipe, an acrylic plate and a foam floating plate. The circuit module comprises a battery and a relay, and the circuit module is electrically connected with the water pump and the solar panel; the water collecting pipe and the water outlet pipe are connected with a water pump pipeline; the bracket is fixedly connected with the plankton collecting net; the bracket, the circuit module, the solar panel and the foam floating plate are fixedly connected with the acrylic plate; the water pump and the water collecting pipe are arranged at the lower part of the foam floating plate; the plankton collecting net is fixedly connected with the net bottom collecting pipe; the bracket is an aluminum alloy bracket; a protective shell and a protective cover are arranged on the circuit module; the relay adopts a delay relay module. And the operation is labor-saving and safe. And the sampling is accurate and flexible. And the equipment is portable and low in cost. The equipment is small in size, light in weight, simple to assemble and convenient to carry.

This utility model relates to an automatic sampling device for flotation cell slurry, solving the problems of traditional sampling methods that require repeated sampling, are cumbersome to operate, and have low sampling efficiency. It includes a sampling box, a sampling handle, and a suction pipe. The sampling box has a movable cover on top; the upper half of the sampling box is equipped with grids at certain intervals and angles to allow the slurry to enter the sampling spoon from the side along the gaps between the blades; the lower half of the sampling box has intact side walls without openings; the bottom of the sampling box is inclined at a certain angle to the horizontal plane, and a tubular discharge hole is provided at the lowest point of the sampling box. The lower end of the sampling handle is connected to the sampling box, and the sampling handle is engraved with scales to determine the sampling depth. The suction pipe is connected at one end to the discharge hole at the bottom of the sampling box, and the other end is equipped with a pipe switch. This utility model provides accurate and representative sampling; it has a high degree of automation and high sampling efficiency; the device has a simple structure and is easy to operate.

The present application relates to a kind of for oil and gas well superhigh pressure multiphase fluid gas sampling analysis method and system.The system is composed of manual needle valve, stop valve, displacement tank, high pressure displacement metering pump, condensing dryer, catalytic oxidizer and gas chromatograph etc..Based on the pressure difference before and after the choke manifold, the system can realize the spontaneous flow of lateral line flow, without external power, and the high pressure displacement metering pump in the process of acquisition will be redundant sample back injection oil and gas main pipeline, realize resource recovery and zero emission;Adopt the design of displacement tank pressure reduction flash evaporation can efficiently release dissolved gas, improve sampling accuracy;Integrating multi-node pressure sensor real-time monitoring pipeline leakage and filter blockage, guarantee the safe operation of chromatograph;Nitrogen purge residual sample gas is converted into CO2 And H2O by catalytic oxidizer, realize safe emission.The method is through " pressure difference drive-flash evaporation-gas release-closed loop injection " process, realize the gas sampling in superhigh pressure multiphase fluid, widely applicable to the sampling needs of deepwater oil and gas well, shale gas and other multiphase fluid.

The utility model discloses a forest shallow soil sampling device which comprises an impact head, a connecting rod is arranged at the upper end of the impact head, a tail rod is arranged at the upper end of the connecting rod, a sleeve is arranged at the lower end of the impact head, a sampling barrel is arranged in the sleeve, the two ends of the sampling barrel are open, the length of the sampling barrel is larger than that of the sleeve, and the length of the sampling barrel is larger than that of the sleeve. A balancing weight is installed on the connecting rod in a sliding mode, and a handle is fixedly installed on the side wall of the balancing weight. According to the forest shallow soil sampling device, the effect that the sampling barrel enters a hard soil layer is achieved by arranging related components such as the balancing weight, and compared with an existing direct manual sampling mode, the forest shallow soil sampling device enables the sampling barrel to obtain large soil layer shearing force through impulse conversion, and sampling on the hard soil body is easier.

The utility model discloses a water pollution layered detection device relates to detection device technical field, including base, the upside fixed coupling of base has the prop, the upper end fixed coupling of prop has the sliding table, the inner surface sliding connection of sliding table has the mobile seat, the upside fixed coupling of mobile seat has the first motor, the output shaft fixed coupling of first motor has the first gear, the upside of mobile seat penetrates the rotation connection with screw post, the downside rotation connection of mobile seat has the thread bushing. The utility model discloses through the mutual cooperation of opening, detection device, L -shaped baffle, second motor, limit board, lifting block, first threaded rod and rotating plate, can dismantle maintenance to detection device, and sensor is the core component, and after long -term use, the performance of possibly because of corrosion, pollution or aging leads to the decline, and the detachable design allows quick replacement or maintenance sensor, avoids because of partial failure and overall replacement equipment, reduces maintenance cost.

The application discloses a same-position sampling device, which improves the technical problems of low sampling efficiency, poor sampling precision and poor operation convenience. The device comprises a base body and a rotating short section arranged at the top end of the base body, the rotating short section is used for controlling the rotation of the base body, the base body is provided with a core taking module, a liquid taking module, a driving piece, a pushing module and a hydraulic module, the liquid taking module and the pushing module are arranged at intervals of 180 degrees from the core taking module, the liquid taking module and the pushing module are located in the same vertical plane, and the core taking module and the liquid taking module are located in the same horizontal plane, so that the core taking module completes core sampling, and after the rotation of the base body is controlled by the rotating short section by 180 degrees, the liquid taking module can be aligned with the sampling hole. The application can improve the sampling efficiency, improve the sampling precision and improve the operation convenience.

This utility model discloses a soil sampling and testing device, comprising: an outer cylinder, a bracket fixedly connected to the upper surface of the outer cylinder, a handle fixedly connected to the upper end of the bracket, a threaded cylinder fixedly connected to the upper surface of the outer cylinder, an adjusting rod threadedly connected to the inner surface of the threaded cylinder, a first turntable fixedly connected to the upper outer surface of the adjusting rod, and an adjusting seat rotatably connected to the bottom outer surface of the adjusting rod. By rotating the adjusting rod, the connecting rod can be adjusted to facilitate the opening of the diversion plate after the outer cylinder is inserted into the soil, thereby increasing the support area of ​​the diversion plate on the soil, increasing the support force of the outer cylinder for the sampling cylinder to sample deeper into the soil, improving the practicality and sampling efficiency of the device, and the diversion plate can separate the soil to the outside when the outer cylinder is inserted into the soil, facilitating the insertion of the outer cylinder. At the same time, after the diversion plate is opened, it can also pry the soil to the outside, enabling the device to accurately sample the soil at the required depth and improve the accuracy of the test results.

The invention provides a high-side current indirect sampling method based on an FSBB quasi-peak current control strategy, and belongs to the technical field of current indirect sampling. The method comprises the following steps that 1, an indirect current sampling circuit is connected with the FSBB converter, a current waveform reproduction circuit of the indirect current sampling circuit forms a voltage-controlled current source and a current mirror through an operational amplifier and a triode, controllable periodic constant-current charging is carried out on a capacitor, in the charging process, the voltage of the capacitor rises at a fixed slope, and the current waveform reproduction circuit is connected with the FSBB converter; a sampling waveform is reproduced in a signal difference mode, accurate reproduction of inductive current under the megahertz frequency is achieved, and adjustable gain is provided; and 2, an amplification circuit of the indirect current sampling circuit converts the differential voltage signal output by the current waveform reproduction circuit into a single-ended signal to the ground, inputs the single-ended signal to the ground into a logic control module, and provides additional gain. According to the invention, extra loss generated on the sampling resistor can be avoided, and accurate sampling of the inductive current in a broadband range can be realized.

A prostate puncture device capable of achieving ablation comprises an outer sheath, a rotary cutter and a microwave ablation probe, the outer sheath comprises a hollow sheath tube and a hollow connecting column, and a semi-cylindrical groove hole is formed in the outer side surface of the front portion of the hollow sheath tube; a hollow through hole is formed in the middle of the hollow connecting column; the rotary cutter comprises a connecting rod, the front end of the connecting rod is connected with a hollow pipe body, and a semi-cylindrical cutting notch is formed in the side surface of the hollow pipe body; the rear end of the connecting rod is fixedly connected with a rotating handle; the microwave ablation probe comprises a probe body and a limiting block, after the probe body is movably inserted into the hollow sheath tube, a radiation window of the probe body corresponds to the semi-cylindrical groove hole, and the limiting block is fixedly installed at the rear end of the probe body and movably connected into the hollow through hole. According to the utility model, the rotary cutter is firstly inserted into the hollow sheath tube to carry out precise rotary cutting on the prostate tissue to obtain an expected tissue sample, then the rotary cutter is withdrawn, and then the microwave ablation probe is inserted to carry out efficient ablation on a target area, so that on the premise of multiple sampling, the bleeding risk is reduced, and the defects in the prior art are overcome.

This utility model relates to the field of concentrate powder sampling technology, specifically to a ton-bag concentrate powder sampling device for use during the freezing period in extremely cold regions. One end of the sampling probe is provided with an incised perforated tooth pattern, and the other end is provided with an annular limiting buckle. The sampling probe has a strip-shaped pressure relief groove area, which is arranged along the axial direction of the sampling probe. Two anti-freeze hydraulic cylinders are arranged in parallel. The piston rod ends of the two anti-freeze hydraulic cylinders are connected to the push plate, and the bases of the two anti-freeze hydraulic cylinders are mounted on the fixed base plate. A movable sampling frame is provided between the two anti-freeze hydraulic cylinders, one end of which is connected to the push plate. The movable sampling frame has multiple pull-out slots that match the annular limiting buckle. Both the push plate and the fixed base plate have grooves that allow the sampling probe to pass through. This utility model enables efficient, accurate, and reliable sampling of ton-bag concentrate powder in extremely cold regions.

This invention provides a sapphire window high-pressure reactor with in-situ sampling and online detection capabilities for natural hydrogen, belonging to the field of high-pressure experimental device technology. It includes a sapphire reaction chamber, a heating element, a high-temperature and high-pressure control assembly, and a detection element. The sapphire reaction chamber has a detection port, an inlet, a feed port, and a discharge port. The heating element is located outside the sapphire reaction chamber. The high-temperature and high-pressure control assembly includes a thermocouple and a pressure sensor. The thermocouple is located at the top of the sapphire reaction chamber and connected to an external control system via wires. The pressure sensor detects the pressure in the sapphire reaction chamber and is connected to the external control system signal. The detection element performs in-situ microscopic observation and quantitative detection of the synthesis process within the sapphire reaction chamber through the detection port. This invention can achieve in-situ detection of low-concentration hydrogen, methane, and other volatile substances.

This invention relates to the field of sampling equipment technology, specifically to an intelligent sampling device for wheat distillers' grains fermentation. The intelligent sampling device includes a multi-stage sampling rod and an outer shell. The multi-stage sampling rod is composed of multiple sampling rods, which are nested and connected sequentially and slide relative to each other. The outermost sampling rod is nested inside the outer shell. Each sampling rod has a protruding conical portion in the middle of its segment, which cooperates with the buoyancy of the fermentation liquid. Both the sampling rod and the inner wall of the outer shell have grooved portions. Multiple liquid sampling ports are evenly distributed circumferentially at the conical angle of the conical portion of each sampling rod. A door is installed at each liquid sampling port, and a guide block is provided on the door. The door slides in cooperation with the grooved portion of the previous sampling rod or the outer shell through the guide block. This invention avoids sample mixing, improves sampling efficiency and accuracy, facilitates operation, and ensures sample purity.

The utility model discloses an automatic sampling device for obtaining cigarette products from a drum wheel of a cigarette making machine, and belongs to the technical field of tobacco machinery. Comprising a sampling mechanism which comprises a cigarette taking fork, and the cigarette taking fork takes out cigarettes from a cigarette taking and discharging wheel; the cigarette separating mechanism comprises a cigarette conveying belt, and after the cigarettes are taken out by the cigarette taking fork, the cigarettes fall onto the online detection conveying belt along the conveying channel under the action of the conveying belt; an overturning sheet is arranged on the conveying channel, and a hopper is arranged below the overturning sheet; a sliding channel is arranged at the tail end of the cigarette receiving mechanism and the conveying channel, a supporting hand is arranged at the bottom of the sliding channel, and a conveying belt is arranged in the middle of the supporting hand and conveys cigarettes to the measuring unit. By means of the structure, automatic sampling and manual sampling can be achieved at the same time, and sampling is accurate.

The utility model relates to soil treatment device technical field discloses a kind of soil four-part method simple processing device, including base, the base top is provided with cylinder, the cylinder top is equipped with sealing cover, the inner wall of cylinder is fixedly connected with cross partition plate and multiple supporting plates, recess one is opened in the base inside, multiple rolling balls are arranged between the cylinder and the base, multiple sealing plates are arranged in the cylinder, each sealing plate is connected with cylinder by multiple hinges, and the outer wall of each sealing plate is fixedly connected with handle one. In the utility model, by setting the cylinder rotatable on base and the built-in cross partition plate, the traditional complicated, inefficient manual mixing and zoning operation is changed into simple, labor-saving mechanical rotation process, and the sealing cover is arranged on the top of cylinder, effectively solving the problem of dust pollution. In addition, the setting of rolling ball significantly reduces the rotating friction, making the operation process more smooth and stable.

The application relates to the technical field of lithium battery production, in particular to an electrolyte sampling device for a lithium battery production line, which comprises a placing plate; a circular plate is rotationally connected to the inner side wall of the placing plate, and the placing plate is annular; a group of sampling tubes are arranged on the outer wall top end of the circular plate through a group of sliding blocks; a connecting column is fixedly connected to the outer wall top end of the placing plate; a sampling cylinder is fixedly connected to the outer wall top end of the connecting column through a first cylinder; a group of the sampling tubes are connected with the sampling cylinder through a group of hoses, and the group of hoses are connected with the sampling cylinder in communication; the rotating shaft is driven to rotate by a motor, the rotating shaft drives the first gear to rotate, the rotation of the first gear drives the circular plate to rotate, the rotation of the circular plate drives a group of the sampling tubes to rotate, so that the sampling area of the sampling tubes is changed, the sampling precision of the device is higher, the overall quality condition of the electrolyte can be comprehensively reflected, and the subsequent electrolyte detection data is more accurate.

The utility model relates to sample collection device technical field, concretely for water sample automatic continuous sampler, including rustproof shell, collection subassembly, collection subassembly includes trace peristaltic pump, trace peristaltic pump fixedly connected in the inside of rustproof shell, one side of trace peristaltic pump is fixedly connected with sampling hose, one side of sampling hose is provided with anti -blocking filter head hole. The water sample automatic continuous sampler, through installing collection subassembly, can realize that the front end of sampling hose is connected with screen filter and 50 -mesh filter head, is used to pretreat water sample, prevents impurity and blocks sampling system, and trace peristaltic pump is equipped with LED display screen, and the sampling frequency and sampling cycle can be adjusted, so as to adjust sampling mode and cycle according to actual demand, ensure accurate sampling, and the collected sample will enter the sampling bottle from the other end, adopt this kind of structure to make the whole sampling system can be safely and stably maintained in rustproof shell, and then it is convenient to sample under complex environment.

This utility model discloses an optocoupler-based isolated sampling circuit. The input terminal is connected to the target AC / DC circuit, and the output terminal is connected to an HDD (High-Speed ​​ADC). It includes resistors R1-R9, capacitors C1-C2, operational amplifier U1, and two optocouplers. The target circuit is connected to the positive input terminal of U1 via R1, grounded via parallel connection C2 and R2, and its common terminal is connected to the HDD via R9. The negative input terminal of U1 is connected to R3 and the output terminal 3 of U2. The control terminal 1 of U2 is connected to the output of U1 via R4, and the control terminal 2 is connected to the control terminal 1 of U3. The control terminal 2 of U3 is grounded. The input terminals 4 of the two optocouplers are connected to the drive power supply via R5 and R6 respectively. The output terminal 3 of U3 is connected to R8, R7, and C1 in parallel. Its topology is simple, it is compatible with both AC and DC circuits, has low cost, good dynamic response, strong anti-interference, reliable isolation, and high sampling accuracy.

The utility model discloses a cement detection sampling device which comprises a tripod, a probe rod group and a drill bit assembly, and realizes sampling of cement at different depths through a sliding sleeve structure and a deflection mechanism. The feeler lever group controls opening and closing of the sampling groove through deflection of the outer sleeve, the drill bit assembly is of a high-frequency vibration and cone structure and can effectively penetrate through a cement layer, friction among particles is reduced, and sampling precision and efficiency are guaranteed. In addition, the cable group is used for controlling starting and stopping of the polarization motor, and the stability and reliability of the sampling process are further improved. By means of the device, multi-depth cement sampling can be achieved, comprehensiveness and representativeness of sampling data are guaranteed, and the device is suitable for quality detection of the cement storage tank.

The application discloses a landslide crack zone deep in-situ cutting sampler and relates to the technical field of landslide crack zone sampling, which comprises a mounting box, a first telescopic driving element is fixedly connected in the mounting box, and the sampler is used for adjusting the depth of the sampler by driving the mounting plate to move downward through the first telescopic driving element. The mounting pipe is driven to rotate through gear transmission in cooperation with a rotating driving element, the conical drill cutting tool is drilled into the target depth in the rotating state, the soil is cut and enters the sampling cylinder, lossless drilling sampling is realized, after the drilling is completed, the cutting tool cuts the soil sample column in the sampling cylinder in the rotating state, the soil sample is completely separated from the surrounding soil body, the baffle blocks and locks the soil sample after the cutting is completed, the soil sample is effectively prevented from falling from the sampling cylinder in the lifting process, the landslide crack zone deep in-situ precise sampling is realized, and the sampling quality and the reliability of detection data are remarkably improved.

This invention discloses a DSP-based energy-feeding AC load design system, relating to the field of power technology, comprising: an isolation step-down module for stepping down the input AC voltage; a load simulation module for sampling the input current and the stepped-down input voltage and sending them to the DSP control module; a DSP control module for performing A / D conversion on the sampled input current and input voltage, and outputting corresponding PWM and SPWM according to the adjustment algorithm; and a power feedback module for using a fully controlled inverter circuit based on the output PWM and SPWM, and using PI regulation to control the steady-state current and power factor, ultimately obtaining the waveform results of rectification and energy feedback.

The utility model relates to the technical field of soil sampling, in particular to a soil sampling device for forestry ecological construction, which comprises a sampling tube, lower sealing sheets are uniformly and rotatably mounted at the bottom end of the inner side wall of the sampling tube, upper sealing sheets are rotatably mounted on the lower sealing sheets, a compression ring is slidably mounted on the inner side wall of the sampling tube, and a lower sealing sheet is rotatably mounted on the compression ring. The pressure ring is rotatably connected with the upper sealing sheet, a plugging sleeve is arranged on the inner side wall of the sampling tube, a pressure rod is slidably mounted on the sampling tube, a transmission rod is mounted between the pressure rod and the pressure ring, and a sampling cover is mounted at the side end of the sampling tube; after the sampling tube is inserted into soil, the opening at the bottom end of the sampling tube can be forcibly closed, a loose desertification soil sample is reliably blocked in the tube, and meanwhile, due to the side opening type design, after the sampling tube is taken out, soil at different depths can be directly observed and accurately scraped in a layered manner through the long opening in the side wall without disturbing the sample; therefore, the desertification soil sampler is suitable for accurate sampling of desertification soil.