213results about How to "Improve sampling efficiency" patented technology

The invention discloses a broadband spectrum compression detection method based on digital twinning and signal noise, and relates to the technical field of mobile communication, and the method comprises the following steps: S1, inputting historical spectrum data, geographic position information and electromagnetic environment parameters into a digital twinning model based on an improved FEDform model, and obtaining a digital twinning model; outputting predicted power spectral density and signal support set probability distribution; s2, generating an optimized observation matrix and a digital compression measurement vector; s3, outputting a whitening measurement value; s4, innovative components are extracted; s5, outputting reconstructed broadband spectrum data; s6, outputting a binary support set matrix containing frequency point occupancy state information; and S7, outputting the updated digital twin model. According to the invention, the limitations of dependence on high-speed sampling hardware, poor anti-noise capability and early warning delay in a traditional broadband spectrum detection method are overcome, and an efficient and accurate solution is provided.

This application relates to the field of integrated circuit design technology, and in particular to a hardware-software integrated border texture sampling system. This system implements border texture sampling through a hardware-software integration approach, supports user-defined sampling colors, and pre-stores a target texture lookup table on the software side, providing the hardware side with the target index value for the customized color. The hardware side only needs to perform target offset mapping and target address calculation to directly read the target texture data from the cache based on the target address, eliminating the need for format conversion after obtaining the texture data, thus saving hardware computing resources. Furthermore, the target texture lookup table contains texture data in multiple data formats, so the hardware side does not need to always obtain large-bit-width texture data and then convert it, but can directly obtain the texture data with the required bit width, thereby reducing the memory access bandwidth on the hardware side and improving border texture sampling efficiency.

The utility model discloses an environmental monitoring sampling device, which relates to the technical field of environmental monitoring, and comprises a sampling pipe, the collection end of the sampling pipe is fixedly communicated with a containing box, one side surface of the containing box far away from the sampling pipe is communicated with two liquid inlet pipes which are distributed in an inclined manner, and the two liquid inlet pipes are symmetrically arranged along the central axis of the containing box; a filter plate with filter holes is fixed at one end, far away from the accommodating box, of the liquid inlet pipe; a guide plate is fixed on the inner wall of the liquid inlet pipe, a sliding rod capable of dredging the filter holes penetrates through the guide plate, and a reset spring for extruding the sliding rod towards one side far away from the filter holes is arranged on the guide plate; a rotating plate is rotationally connected into the containing box. When the filter holes in the liquid inlet pipe on one side are blocked, the impact force on one side of the rotating plate on the side corresponding to the blockage is reduced, and the rotating plate is stressed to rotate and extrude the sliding rod on the blocked side to dredge the filter holes, so that the self-dredging of the environment monitoring sampling device is realized, and the sampling efficiency is greatly improved.

A stratified soil sampling device, relating to the technical field of soil sampling equipment, includes a positioning outer cylinder and a sampling inner cylinder rotatably installed within it. The positioning outer cylinder is equipped with a supporting base plate, a supporting top plate, and a transparent observation window. Three sets of auxiliary support frames are hinged to its outer periphery, working in conjunction with positioning pins to achieve stable positioning. Above the supporting top plate are a telescopic cylinder, a triangular lifting plate, and a transmission mechanism, driving the sampling inner cylinder to rotate and providing downward pressure. The lower end of the sampling inner cylinder is equipped with a soil-breaking cutting edge, and the internal sampling shaft drives a rotary blade to cut the soil. The sampling inner cylinder has a dispensing port, and the positioning outer cylinder has a dispensing limit seat. The supporting base plate has a discharge port and a baffle. This device provides stable positioning, efficient sampling, and allows for direct observation of soil stratification through the observation window. It enables independent collection of samples from different soil layers and facilitates convenient storage, effectively solving problems such as tilting, slow sampling, and sample mixing in existing devices. It is suitable for soil monitoring, geological surveys, and other scenarios.

The utility model discloses an automatic material taking machine. The automatic material taking machine comprises a barrel, a material taking device and a material taking device, the material taking device is arranged in the barrel body; the material receiving device is arranged on the outer side of the barrel body; one end of the material conveying channel serves as a material collecting opening to extend into the barrel body and corresponds to the discharging position of the material taking device, and the other end of the material conveying channel serves as a material discharging opening and corresponds to the material collecting device; the driving device is connected with the material taking device, and the driving device drives the material taking device to complete the discharging action and convey the cement sample to the material collecting opening of the material conveying channel. According to the cement sampling device, automatic online sampling can be realized, manual sampling is not needed, the problems of insufficient sampling representativeness, low sampling efficiency and easiness in sample pollution caused by manual sampling are solved, the sampling efficiency is improved, the sampling quality is ensured, and a more reliable technical guarantee is provided for cement quality control.

The invention belongs to the technical field of compaction method foundation treatment, and particularly relates to a compaction method foundation treatment inter-pile soil sampling device which comprises a cylinder, a conical cylinder, a positioning cylinder, a sampling cylinder and a cutter, a plurality of guide holes are evenly distributed in the circumference of the cylinder, and the positioning cylinder is slidably arranged in the guide holes; a sampling barrel is arranged on the inner wall of the positioning barrel in a sliding manner; a plurality of guide blocks are evenly distributed on the circumference of the conical cylinder, sliding grooves are formed in the guide blocks, and the cutters are arranged in the sliding grooves in a sliding mode. The bottom sides of the cutters are in one-to-one correspondence with the sampling barrels; a plurality of positioning barrels extend out of the cylinder and abut against the inner wall of the exploratory well, a tip slope is arranged at one end of the sampling barrel, and after the sampling barrel is inserted into the inner wall of the exploratory well, the cutter is obliquely and downwards inserted into the soil body and coincides with the tip slope, so that a soil sample in the sampling barrel is cut off from the rear soil body. According to the device, the sampling device can be positioned and fixed, sampling and sample breaking can be rapidly carried out, samples can be conveniently taken out, and the sampling efficiency in an exploratory well is greatly improved.

The multifunctional sampling device comprises a sampling barrel, an auxiliary barrel with the same diameter as the sampling barrel is arranged at the upper end of the sampling barrel, a driving unit and a fixing unit are sequentially arranged in the auxiliary barrel from bottom to top, and a collecting unit is mounted on the inner wall of the sampling barrel; the problems that in the rock-soil sampling process in the prior art, rock-soil at different diameters of a hole cannot be sampled, rock-soil on the surface layer of the inner wall of the hole cannot be removed, samples at different positions of the hole cannot be collected at a time, the sampling time is prolonged, the sampling efficiency is reduced, and the sampling time is shortened can be solved. The cost is increased; the angles of the limiting blocks with different heights are adjusted through the limiting rod, sampling of rock and soil samples with different depths and diameters is achieved, the sampling frequency of the same hole is reduced, the sampling requirements of different rock and soil samples are met, the multifunctionality and flexibility of the device are improved, the sampling time is shortened, and the sampling cost is reduced.

The invention relates to the technical field of water quality monitoring, in particular to an unmanned aerial vehicle water quality sampling device for environmental monitoring, which comprises an unmanned aerial vehicle body, a lifting assembly is arranged at the bottom end of the unmanned aerial vehicle body, the lifting assembly comprises a mounting plate mounted at the bottom end of the unmanned aerial vehicle body, a winder body is mounted at the bottom end of the mounting plate, and a sampling assembly is arranged at the bottom end of the lifting assembly. The sampling assembly comprises a sampling bin installed at the bottom end of the connecting rope, a plurality of water inlet holes are formed in the top end of the sampling bin in a penetrating mode, a bearing round frame is fixedly connected to the bottom end of the sampling bin, multiple sets of sliding round frames are slidably clamped to the inner end of the bearing round frame, and lower pressing blocks are fixedly connected between the sliding round frames located at the lower end. The top end of the pressing block slidably penetrates through a sliding rod at the top end of the sampling bin, the top end of the sliding rod is fixedly connected with a filter screen plate, and the bottom end of the filter screen plate is fixedly connected with a plurality of conical rods. By means of a linkage structure of the sliding round frame, the pressing block and the conical rods, integration of water entry resistance reduction, accurate sampling and sealing pollution prevention of the sampling bin is achieved.

The utility model relates to soil sampling technical field, and disclose a kind of sampling device for soil heavy metal monitoring, to solve the problems, such as low efficiency of traditional device, difficult stratified sampling etc., it includes trolley with universal wheel and handle, trolley surface is equipped with adjusting mechanism and sampling mechanism, adjusting mechanism contains horizontal and longitudinal adjusting assembly, horizontal passes through first servo motor drive screw rod, and drives sliding base along fixed rod horizontal sliding;Longitudinal is driven screw rod by second servo motor, so that sliding base along fixed rod longitudinal sliding, realize the multi-position adjustment of sampling mechanism, in sampling mechanism, first hydraulic cylinder drives hydraulic telescopic column with sampling soil sampling tube into soil, after taking soil, first cylinder drives push plate to push out sample, bottom baffle is opened and closed by second cylinder control and realizes stratified sampling, the setting of sampling mechanism can realize efficient soil sampling and convenient unloading, simultaneously stratified sampling function can be realized in sampling process, protective housing protects cylinder, the device is efficient and convenient, can guarantee sample purity and accuracy.

The present application relates to sample supernatant transfer equipment technical field, and disclose a built-in filter element pollution prevention device for biological sample processing, including the platform, the top of the platform is fixedly connected with first connecting frame, the top of first connecting frame is fixedly connected with auxiliary assembly, the top of auxiliary assembly is fixedly connected with second connecting frame, the surface of one end of auxiliary assembly is slidably connected with sliding cover, the surface of the other end of auxiliary assembly is fixedly connected with control center. The both sides of the top of auxiliary assembly are fixedly connected with fixture, the inside of auxiliary assembly is provided with pasteur pipette, the rear end surface of auxiliary assembly is fixedly connected with vertical table, the top of pasteur pipette is provided with funnel shape, the bottom of pasteur pipette is provided with conical shape, the inside of the middle part of pasteur pipette is provided with filter element, the material of filter element is provided with polypropylene, polytetrafluoroethylene and nylon mixed material, the device has the advantages of improving the extraction effect of the device on sample supernatant, convenient for users to use and the like.

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 utility model discloses a dual -purpose spiral sampling head relates to coal sampling related field, its structure includes outer frame, fixedly arranged motor support plate on the left and right two sides top of outer frame, fixedly arranged baffle in the inside middle end of outer frame, set up inside short spiral auger and inside spiral auger, utilize first motor and second motor can respectively drive inside short spiral auger and inside spiral auger to move down and collect coal sample to realize the equipment wet coal and ordinary coal sample sampling two functions combined use to improve the applicability of equipment, set up temporary storage hopper and pneumatic push rod simultaneously, utilize temporary storage hopper to make this equipment can store coal sample temporarily, and utilize pneumatic push rod to open rotation gate automatically and carry out automatic discharge to increase the sampling efficiency of this equipment.

The application discloses a sampler and a sampling vehicle. The sampler comprises a sampling cylinder, a sampling assembly, a sample falling pipe, a sample discarding pipe and a cutter. The sampling cylinder has an inner cavity. An upper end of the sampling cylinder is provided with a sample outlet. The sampling assembly is rotatably arranged in the inner cavity. The sample falling pipe is arranged outside the sampling cylinder. One end of the sample falling pipe is communicated with the sample outlet so that the sample collected by the sampling assembly falls into the sample falling pipe. The length direction of the sample falling pipe intersects with the length direction of the sampling cylinder at an angle. The sample falling pipe is provided with a sample discarding opening. The orientation of the sample discarding opening is orthogonal to the length direction of the sampling cylinder. The sample discarding pipe is arranged on one side of the sampling cylinder and is communicated with the sample discarding opening. The cutter is arranged in the sample falling pipe and moves between a sampling position and a sample discarding position so as to cut the sample falling into the sample falling pipe. When the cutter is at the sampling position, the sample outlet is disconnected with the sample discarding opening. When the cutter is at the sample discarding position, the sample outlet is communicated with the sample discarding opening. The sampler has the advantages of good sub-division effect and good vehicle performance.

The utility model relates to the technical field of geological sample sampling devices, and discloses a geological stratified sampling device for geological mining, which comprises a movable base provided with a central hole, and a limiting ring rotatably connected in the central hole; the sampling barrel selectively penetrates through the central hole; the telescopic sleeves are sequentially connected in a sliding mode from the outer side to the inner side in the vertical direction, the telescopic sleeve on the outermost side is connected with the inner side wall of the limiting ring in a sliding mode, the inner side wall of the telescopic sleeve on the innermost side is connected with the sampling barrel in a sliding mode, and the sampling barrel can drive the telescopic sleeve on the innermost side to synchronously move downwards. And then the multiple sections of telescopic sleeves from the inner side to the outer side are driven to be sequentially embedded in the drill hole. The sampling barrel can drive the telescopic sleeve on the innermost side to synchronously move downwards, then the multiple sections of telescopic sleeves are driven to be sequentially embedded in a drill hole, collapse of the drill hole is avoided, and layered multi-time sampling of stratums with different depths is achieved.

The utility model discloses a kind of meat homogenization sampling devices, it includes: including: sampling assembly, connecting assembly and drive assembly, the front end of drive assembly is connected sampling assembly by drive assembly, drive assembly drives sampling assembly to rotate sampling;Sampling assembly includes: sampling sleeve, compression nut and sampling drill bit, the rear end of sampling drill bit is connected with drive assembly by connecting assembly and drive assembly drives sampling drill bit to rotate, the front end of sampling drill bit is flush with the front end of sampling sleeve, the rear end of sampling sleeve is set in the front end of drive assembly, compression nut is connected with the front end of drive assembly by thread and the sampling sleeve is fixed on the outer wall of sampling drill bit;Sampling drill bit outer wall and sampling sleeve inner wall have gap.The utility model aims at providing a kind of meat homogenization sampling device with simple structure, convenient replacement, improve sampling efficiency and sample accuracy.

This invention discloses a method for optimizing the design of complex equipment based on a hybrid adaptive sampling surrogate model. This method divides the design space into several Voronoi polygons controlled by sample points. Three indices—leave-one-out error, local nonlinearity, and polygon region size—are used to evaluate the importance of each sample point region. An entropy-weighted distance method is used to select the most suitable sensitive region for adding points. A learning function based on error estimation is then combined to determine new sampling points. This iterative update constructs a high-precision surrogate model, establishing a mapping relationship between design parameters and optimization objectives, thereby solving the design optimization problem. This invention innovatively proposes a multi-index adaptive weight allocation method to select sensitive sample regions and proposes a novel learning function to determine the location of added points. This method can construct a high-precision surrogate model using fewer sample points and can be used for the optimization design of complex equipment, including but not limited to tunnel boring machines.

The invention discloses a network digital twinning-oriented dual-view flow data sampling method and system, and mainly solves the problems of difficult key path capture and low flow reconstruction precision caused by lack of frequency domain perception of a flow sampling method in the prior art. According to the implementation scheme, historical flow interaction data in a network node sliding window are collected to form a third-order flow tensor and normalized, and node frequency domain features are extracted and then smoothly updated to obtain a smooth feature vector; mapping the vector to determine a node category, and dividing source-destination OD pair traffic categories of the whole network; calculating statistics lever scores of all OD pairs, dynamically allocating sampling budget of each category according to the statistics lever scores, and generating a sampling set and a binary sampling mask by adopting a determinacy and random combination strategy; and collecting the flow data of the corresponding position at the current moment based on the mask, constructing a tensor completion optimization model for solving completion, and outputting the recovered whole network flow data. According to the method, through double-view cooperation of the frequency domain features and the statistical lever fraction, precise coverage of a high-value traffic path is realized, and the traffic reconstruction precision of the digital twin network is effectively improved while the sampling overhead is reduced. The method can be applied to measurement and reconstruction of large-scale network traffic.

The application discloses a kind of autonomous exploration method and device based on boundary and stratification, it is related to the field of robot autonomous exploration, this method includes in current two-dimensional grid map, according to the current position of robot setting a dynamic sliding window, it can be according to the uncertainty of environment, the distribution of obstacle and the motion speed of robot adaptive control the size of sliding window.In addition, the application selects a local target boundary point from the dynamic sliding window or selects a global target boundary point from each undetected global boundary point as a guide point, so that the RRT sampling algorithm plans a feasible path in the specified direction, improving the efficiency of autonomous exploration.In addition, the application selects the target boundary point from the local boundary point or from the global boundary point, stratifies the boundary point, reduces the number of sampling points to be evaluated, and improves the efficiency of autonomous exploration.

This utility model relates to the field of environmental monitoring technology, specifically a lake water sampling and testing device for environmental protection. It includes: a waterproof tank; a telescopic detection mechanism connected to the top of the waterproof tank; a water pump installed at the bottom of the telescopic detection mechanism; an outlet pipe connected to one end of the water pump; a storage cylinder movably installed at the bottom of the outlet pipe; a threaded sleeve movably installed at one end of the inlet pipe; a filter plate mounted on the threaded sleeve; a rotating shaft rotatably mounted at one end of the waterproof tank; a rotating plate mounted at one end of the rotating shaft; a brush plate at one end of the rotating plate that contacts the filter plate; and a fixing mechanism for easy brush plate replacement. This utility model uses the rotating shaft to drive the rotating plate to rotate, causing the brush plate to rotate. The brush plate scrapes away large debris adsorbed on the filter plate surface, avoiding interference with normal sampling. It eliminates the need for manual cleaning by personnel after raising the waterproof tank to the water surface via the telescopic detection mechanism, thus improving sampling efficiency.

This utility model relates to the field of sampling technology for building materials, and discloses a sampling device for testing building materials, including a sampling mechanism, a transmission mechanism, and a main body mechanism. The sampling mechanism is located on the outer wall of the transmission mechanism, and the transmission mechanism is located on the outer wall of the main body mechanism. The sampling mechanism includes a sampling barrel, a control cylinder is fixedly connected to the upper surface of the sampling barrel, a pneumatic connecting rod is fixedly connected to the outer wall of the control cylinder, and a scraper is fixedly connected to the lower surface of the pneumatic connecting rod. This utility model, by setting the sampling barrel fixedly connected to the control cylinder, and the control cylinder fixedly connected to the pneumatic connecting rod, allows the pneumatic connecting rod to retract via the control cylinder. The pneumatic connecting rod is fixedly connected to the scraper. After sampling, the scraper can be moved by the control cylinder, thereby effectively cleaning residual materials on the inner wall of the sampling barrel and ensuring the accuracy of subsequent sampling and testing.

The utility model discloses a kind of gas sampling instrument, including sampling shell, the left and right sides of the lower end middle part of sampling shell are equipped with protective frame, the inside lower end middle part of sampling shell is equipped with connecting pipe, the lower end of connecting pipe is equipped with sampling bottle, further including sampling mechanism, sampling mechanism: it includes connector, limit slot, limit claw, limit head, limit protrusion and collection assembly, the lower end of the outer surface of connecting pipe is equipped with bearing, connector is set on the outer surface of bearing, limit slot is respectively opened in the left and right sides of the lower end of the outer surface of connector, limit claw is respectively slidably connected in the middle of the middle part of protective frame close to connector side, the gas sampling instrument, with sampling mechanism, air pipe is integrated with sampling shell, air pipe is received by mounting groove, portable air pipe is not easy to lose, sampling bottle can also be quickly connected and disassembled by the up-down movement of limit claw, improve the sampling efficiency of gas.

This utility model belongs to the field of water quality sampling and provides a hydrological and water conservancy water quality sampling machine, including a body, a support plate inside the body, a rotating component between the support plate and the body, the rotating component driving the support plate to rotate at a fixed angle, a support cylinder arranged in a ring on the top of the support plate, a storage cup inside the support cylinder, a water pump with an external power supply inside the body, an inlet pipe and an outlet pipe on the water pump, the outlet pipe extending above the inlet of the storage cup, and the inlet pipe extending to the outside of the body; it also includes a sampling cylinder with one side open, the other side of the sampling cylinder connected to the other end of the inlet pipe, and a receiving and releasing component between the sampling cylinder and the body; this utility model, through the designed water quality sampling machine, can store water samples from different locations separately, improving the efficiency of water quality sampling.

This invention relates to the technical field of detection devices, specifically disclosing a multi-depth sampling and detection device for bio-fermentation, comprising a fermenter, a stirring shaft vertically disposed in the middle of the fermenter, multiple stirring components disposed vertically on the sidewall of the stirring shaft, and multiple sampling components disposed on the sidewall of the fermenter; one stirring component corresponds to one sampling component; each stirring component includes a horizontally disposed sleeve fixedly connected to the stirring shaft, blades fixedly disposed on the sidewall of the sleeve, multiple first sampling holes opened on the sidewall of the sleeve, a sampling tube rotatably disposed within the sleeve, and multiple second sampling holes opened on the sidewall of the sampling tube; the multiple first sampling holes are located on the same straight line on the outer wall of the sleeve, and the multiple second sampling holes are respectively located on different straight lines on the outer wall of the sampling tube. This invention's multi-depth sampling and detection device for bio-fermentation is capable of sampling and detecting at different depths and locations within the fermenter.

The utility model relates to the field of water quality sampling, and discloses a water quality sampler for environment detection, which comprises a mobile carrier, the top of the mobile carrier is provided with an adjusting mechanism and a collecting mechanism, the adjusting mechanism comprises a placing groove, the placing groove is arranged at the top of the mobile carrier, the top of the mobile carrier is rotatably connected with a supporting pipe, and the supporting pipe is connected with a water outlet. An adjusting screw rod is rotatably connected to the inner wall of the supporting pipe, a Z-shaped block is in threaded connection to the outer wall of the adjusting screw rod, a first motor is fixedly connected to the outer wall of the Z-shaped block, an unwinding drum is fixedly connected to the output end of the first motor, and a collecting hose is wound around the outer wall of the unwinding drum. According to the utility model, the adjusting mechanism is arranged, and the collecting head extends out and retracts back in the supporting pipe, so that the collecting head can be moved to specific areas such as the middle of a river according to actual sampling requirements, the collecting head can be prevented from being exposed in a non-working state, the risk of collision damage is reduced, and the service life of equipment is prolonged.

The utility model provides a portable sampling device which comprises a sampling structure and an auxiliary structure which are fixedly connected through a connecting rod, the sampling structure comprises a sampling head and a push rod, the sampling head is cylindrical, one end of the sampling head is open, the other end of the sampling head is closed, and a first through hole is formed in the closed surface of the sampling head; the pushing rod comprises a pushing end and a connecting end, the pushing end is provided with a pushing disc matched with the inner cavity of the sampling head, and the connecting end is provided with a first external thread along the circumferential surface; the pushing end penetrates through the first through hole and is internally sleeved in the sampling head, and the pushing disc is positioned in an inner cavity of the sampling head and can reciprocate along the inner cavity; and the push rod is movably connected with the sampling head through a bolt and nut structure. According to the portable sampling device disclosed by the utility model, the sampling structure is designed into a piston structure to push out the soil sample in the inner cavity of the sampling head, so that the soil sample with a complete structure is obtained, the sampling efficiency is improved, and the sampling device has a wide application prospect.

The utility model discloses a sampling device of piled fermented grains for white spirit brewing, which comprises a sampling tube, a link rod and a sampling head, and a pressing plate is arranged in a mounting groove formed in the upper side of the outer cambered surface of the sampling tube; the connecting rod comprises a long rod and a first rotating bolt, the first rotating bolt is in threaded connection with the interior of a threaded groove formed in the lower side of the right end of the pressing plate, and the middle of the outer arc face of the first rotating bolt is rotationally connected with the long rod; the sampling head is arranged outside the sampling tube, the link rod further comprises supporting rods, the supporting rods are rotationally connected to the lower side of the outer cambered surface of the long rod, the sampling head comprises a sampling bin conical blade, a ferrule and a screw, and the ferrule is arranged on the lower side of the outer cambered surface of the sampling tube. The device is simple in structure and convenient to operate, can effectively complete accurate sampling operation of stacked fermented grains at a specific depth, replaces a traditional manual pile breaking and sampling mode, and does not affect the effect of a wine brewing process.

This utility model discloses a closed sampling device for directional long borehole drilling, including a drill bit, a plurality of cutting edges at the left end of the drill bit, a drill shank at the right end of the drill bit, a first water supply channel inside the drill shank, a plurality of sampling holes on the outer surface of the drill shank connected to the water supply channel, and a water outlet channel inside the drill bit. The first water supply channel and the water outlet channel are interconnected. A piston assembly is slidably disposed in the first water supply channel through an elastic connector. A circular slider is also disposed in the first water supply channel, located on the right side of the piston assembly. A second water supply channel is disposed at the center of the piston assembly. This application replaces the original multi-tube structure with a corresponding piston assembly and a circular slider, which simplifies the structure and effectively improves the sampling efficiency. In specific sampling, only low-pressure water needs to be replaced with high-pressure water to complete the sampling, effectively solving the technical problems of complex structure and time-consuming and labor-intensive operation of existing closed sampling devices.

The utility model relates to the field of sample collection, and discloses a multi-chamber layered sample collection device, which comprises a collection rod, a plurality of layers, a plurality of layers and a plurality of layers, the collection rod is internally provided with a cavity extending along the axial direction of the collection rod, and the collection rod is used for being inserted into a medium of a to-be-collected sample; the number of the partition plates is at least two, the partition plates are installed in the cavity of the collecting rod, the partition plates divide the cavity into a plurality of collecting chambers, and each collecting chamber is used for collecting samples of different depth layers. According to the soil sampling device, the sampling rod is directly fed into different depths of soil for sampling, so that the soil sampling device can be accurately positioned to a specific depth layer, sampling is directly started aiming at a target depth, the sampling efficiency is improved, the cavity of the sampling rod is divided into a plurality of mutually independent sampling chambers by the partition plates, and each sampling chamber corresponds to one depth layer, so that the sampling efficiency is improved. In the collecting process, all the collecting chambers are completely independent, and mixing of samples in different depth layers is effectively avoided.

This utility model relates to the field of water conservancy engineering technology and discloses a soil and rock sampling device for water conservancy engineering testing, including a support plate and a sampling cylinder. A support leg is fixedly installed at the bottom of the support plate, and a caster wheel is installed at the bottom of the support leg. An anchor rod is movably inserted through the support plate. A fixed frame is fixedly installed at the top of the support plate, and an adjustment port is opened at the top of the fixed frame. A movable frame is slidably connected to the inner wall of the adjustment port, and a movable block is slidably connected to the inner wall of the movable frame. A hydraulic cylinder is fixedly installed at the top of the movable block, and the piston rod of the hydraulic cylinder movably passes through the movable block. A connecting frame is fixedly installed at the bottom of the piston rod of the hydraulic cylinder. This soil and rock sampling device for water conservancy engineering testing allows staff to easily adjust the sampling position when multiple samples are needed for testing and verification, without requiring personnel to move the entire device, greatly improving sampling efficiency and saving manpower.

This utility model discloses a sampling device for residual agricultural film in farmland, belonging to the field of agricultural film sampling technology. It includes a fixed frame and at least two filtering units. Each filtering unit includes a filter ring and a filter disc. A linkage component is provided on the filter disc, and a rotating unit is located at the end of the fixed frame away from the filter ring. This design allows soil particles of different sizes to be gradually separated from agricultural film residue during the screening process, improving the screening accuracy and efficiency of the residue. Simultaneously, the filter disc rotates synchronously through a linkage structure, generating relative motion during screening, which helps prevent sieve clogging and improves screening efficiency. The filtering units are connected by a detachable structure, facilitating cleaning and replacement and enhancing the maintainability of the device. The overall structure is suitable for screening different types of soil and residual film, possessing strong versatility and field adaptability, thereby improving the efficiency and accuracy of agricultural film residue sampling.