57results about How to "Guaranteed representation" patented technology

This invention discloses a method for diagnosing sewage leaks in drainage pipes based on the introduction of clean water, specifically relating to the field of municipal engineering. The method includes: collecting water samples from adjacent manholes at both ends of the pipe to be inspected on a sunny day; pre-treating the samples and then performing fluorescence detection to obtain an initial fluorescence value F; introducing clean water at a known flow rate q0 into the downstream manhole's inlet pipe; after the clean water and sewage are fully mixed, collecting a water sample from the downstream manhole; pre-treating the sample and then performing fluorescence detection to obtain a fluorescence value F' from the downstream manhole; and introducing clean water at a known flow rate into the upstream manhole's inlet pipe; after the clean water and sewage are fully mixed, collecting a water sample from the upstream manhole; pre-treating the sample and then performing fluorescence detection to obtain a fluorescence value F'' from the downstream manhole. By introducing clean water into the upstream and downstream manholes and combining it with the fluorescence conservation principle, the leakage amount and uncertainty are calculated, thus solving the problems of high cost of video detection, low accuracy of flow monitoring, and difficulty in tracing the source of low-pollution water.

The invention relates to the technical field of crystallization control, and discloses a programmed cooling crystallization kettle and method capable of regulating and controlling sugar alcohol crystal granularity, and the method comprises the following steps: constructing a basic nonlinear cooling model in advance, and respectively collecting real-time torque and actual average chord length of the crystal by using a torque sensor and a focused light beam reflection measurement probe in the crystallization process; and the control system calculates the cooling rate correction according to the granularity deviation through a PID algorithm, calculates a rheology correction factor according to the torque change, and performs attenuation treatment on the sum of the basic rate and the correction by using the rheology correction factor to obtain a final cooling instruction to adjust the temperature in the kettle. Through dual feedback of coupling granularity and rheology, the contradiction between crystal growth and mass transfer resistance under a high-viscosity system is solved, the inclusion amount of the mother liquor is remarkably reduced while the target particle size is realized, and the purity and uniformity of the product are improved.

The invention provides a battery system state evaluation and early warning method based on multi-source information fusion, and the method comprises the steps: synchronously collecting the multi-source state data of a battery system, which at least comprises a real-time synchronization parameter group for cooperatively evaluating the mechanical integrity and environment interaction risk, the real-time synchronization parameter group comprises vibration acceleration data, organic volatile matter concentration data, humidity data and corrosion rate data; processing the data of the real-time synchronization parameter group, extracting combined feature parameters having an association relationship with each other to form a feature vector, the combined feature parameters at least comprising: a structure risk feature, a sealing risk feature, and a connection risk feature; and inputting the feature vectors into a preset multi-parameter fusion analysis model to analyze a linkage mode among the combined feature parameters, and synchronously generating and outputting a safety risk report based on an analysis result of the linkage mode, the safety risk report at least comprising a mechanical integrity risk index and an environment interaction risk index.

This invention discloses an automated limestone sampling device and its usage method for desulfurization systems in thermal power plants. Limestone transported by truck is unloaded into a limestone pit hopper, then transferred via a vibrating feeder, bucket elevator, and sliding pipe to a limestone storage hopper for use in the desulfurization system. The limestone sampling device is mounted on the sliding pipe and powered by a cylinder. During sampling, its actuator extends into the sliding pipe, cutting off the entire flow area for sampling. After sampling, the actuator is pulled out, and the collected sample is transferred by a scraper to a collection pipe, where it is collected by a sample collection bucket. This invention achieves mechanized, automated, and uniform limestone sampling in thermal power plant desulfurization systems, solving the problems of high cost, poor sample representativeness, and the risk of fraud associated with manual sampling.

The present application relates to the technical field of food raw material sampling detection, and in particular to a food raw material primary processing sampling detection device, which comprises a conveying bottom plate, the top of the conveying bottom plate is fixed with a horizontal sliding rail, the horizontal sliding rail is connected with a moving plate through an electric sliding block, the top of the moving plate is connected with a containing box for containing raw materials through a T-shaped plate, the T-shaped plate is set upside down, the horizontal section of the T-shaped plate is symmetrically provided with sampling parts in front and back, and the top of the moving plate is commonly provided with reciprocating pushing parts on the left and right sides. The sampling pipe is used to sample from the bottom to the top through the sampling hole preset at the bottom of the containing box, compared with the direct sampling mode of the container from the top of the containing box, the damage to the peas can be reduced, so that the appearance of the processed peas is ensured, and through the pushing arc surface arranged on the side of the sealing plate, the damage to the peas caused by the sealing plate in the process of sealing the through hole can be avoided, and the appearance of the processed peas is further ensured.

This utility model relates to the field of soil research technology and discloses an equidistant sampling device suitable for the study of soil pollutants in agricultural land. It includes a support plate with a scale fixedly connected to its top. Two I-shaped grooves are formed at the top of the support plate, and two I-shaped sliders are slidably connected to the inner walls of the two grooves. Two pedals are fixedly connected to the tops of the two sliders. The operator first determines the sampling interval according to the research requirements. Then, the operating parameters of the bidirectional motor, such as speed and direction of rotation, are set via the control panel. After starting the bidirectional motor, its output drives a bidirectional screw to rotate. Due to the bidirectional thread characteristic of the bidirectional screw, the two moving sleeves connected to the surface of the bidirectional screw will move in opposite directions at equidistant intervals along the screw. The operator can then observe the position of the pointer on the scale.

The utility model provides a kind of hydraulic engineering geological survey sampling device, it is related to hydrogeological engineering survey technical field, including cylinder, by coaxial setting upper sampling cavity, middle sampling cavity and lower sampling cavity constitute three-dimensional sampling space;Negative pressure source, it is communicated to each sampling cavity, directional negative pressure is formed when sampling.The utility model can realize high-precision stratified sampling without cross-contamination, by orthogonal distribution upper, middle and lower water inlet channel, make the water body of different depth in geological survey stationary surface water along independent path into corresponding sampling cavity, completely avoid interlayer mixing from physical structure, ensure stratified data authenticity;The utility model can optimize fluid flow, guarantee sample integrity and representativeness, the horn-shaped water inlet of anti-turbulence cover reduces flow velocity, combined with spiral guide flow channel, convert turbulent flow into stable laminar flow, reduce bubble disturbance and particulate matter settlement, significantly improve the originality of sample, meet high-precision water quality analysis demand.

This invention relates to the field of laboratory analytical instrument technology, specifically to a water bath nitrogen blowing device, comprising a water bath nitrogen blowing instrument, a drain pipe fixedly connected to one end of the drain pipe, and a wastewater tank fixedly connected to one end of the drain pipe. A protrusion is fixedly installed inside the wastewater tank, and the protrusion has multiple sets of first straight grooves, inclined grooves, and second straight grooves. A hydraulic rod is installed at the upper end of the wastewater tank, and a fixed box is installed at the power output end of the hydraulic rod. Multiple sample collection tubes are installed inside the fixed box for sampling wastewater. Each sample collection tube has a sliding sealing rod slidably connected inside, and a sliding ball is fixedly connected to one end of the sliding sealing rod. The sliding ball is slidably connected to each of the first straight groove, inclined groove, and second straight groove. This device can automatically sample wastewater at different depths when sampling and testing is required.

The utility model relates to a sampling device suitable for water vapor quality detection of a power station boiler, which comprises a box body provided with moving wheels at the bottom, a sealed flow cell is arranged in the box body, a cooling assembly is arranged in the sealed flow cell, the sealed flow cell is connected with a sampling pipeline and a feeding pipeline, and the feeding pipeline is connected with the sampling pipeline. And the pipe head of the feeding pipeline is connected with a water pipe universal joint. The device has the function of collecting a water sample to be tested, can ensure the sealing performance of an instrument in the whole test process, can effectively connect various sampling pipe joints of different models on a boiler with a feeding pipeline of the device, and ensures that the temperature and the flow of the water sample to be tested meet the test requirements of the instrument in the test process of the instrument; therefore, the accuracy and effectiveness of field test results are ensured. In addition, the device meets the requirement for portable sampling in field inspection of the water vapor quality of the power station boiler, and the standardization and accuracy of the test are improved.

The utility model relates to solid waste detection device technical field discloses a kind of sampling device for solid waste detection, including base and sampling plate, the upper surface of the base is fixedly connected with second motor, the output of second motor is fixedly connected with disc, the inside of disc is fixedly connected with cylindrical pin, the outer wall of cylindrical pin is rotatably connected with third transmission rod, the inner wall of third transmission rod is rotatably connected with limit post, the outer wall of limit post is fixedly connected with screen, the outer wall of screen is fixedly connected with first fixed block.In the utility model, first cylindrical block moves and drives first fixed block to move, in this process, first fixed block moves and drives screen to move, so as to reach the effect that solid waste is evenly dropped into sampling plate after screening, which is beneficial to make the screened solid waste evenly fall into sampling plate, ensure the representativeness of detection sample and the reliability of subsequent detection result.

The invention belongs to the technical field of biology, and discloses a plateau dairy cow liquid phase breeding chip and application thereof, and detection objects of the liquid phase chip comprise 75939 SNP sites positioned on a common cow reference genome AR-UCD 1.2. The liquid chip provided by the invention can ensure comprehensive coverage and genetic information representativeness of bovine genomes, and provides a reliable basis for subsequent molecular identification, population structure analysis and molecular breeding application. The gene not only has population genetic polymorphism, but also covers a gene functional region and a non-functional region. Practicality and representativeness of the chip are guaranteed, stability and functional correlation of genetic markers can be considered, and a reliable tool is provided for molecular breeding and genetic improvement.

The application discloses a power electronic distribution network transformer propagation model optimal adaptation method and system, and the method comprises the following steps: calculating transformer winding leakage inductance and winding resistance, and transformer excitation inductance and excitation resistance; estimating the equivalent value of each link distributed capacitance; deducing the propagation coefficient of the high-frequency transformer model and the low-frequency transformer model at any frequency under the excitation source; calculating the relative deviation amount of the corresponding propagation coefficient of the high-frequency transformer model and the low-frequency transformer model at different frequencies in the required frequency band of the simulation scene; obtaining the maximum value of the relative deviation amount of the propagation coefficient under all conditions in the required frequency band of the simulation scene; when all the maximum values of the relative deviation amount of the propagation coefficient are less than the set relative deviation limit value, the low-frequency transformer model is selected for the simulation scene, otherwise the high-frequency transformer model is selected; the application has the advantages that the optimal selection of the transformer model is performed under the consideration of the simulation efficiency and accuracy requirements.

The invention relates to the technical field of meteorological detection, in particular to a fog detector based on combination of infrared scattering and a particulate matter sensor and a method. The detector comprises a supporting frame, an infrared scattering sensor is fixedly connected to one side of the top end of the supporting frame and used for generating infrared scattering signals related to the scattering degree of suspended particulate matter in the atmosphere, and a temperature and humidity sensor is fixedly connected to the other side of the top end of the supporting frame and used for collecting temperature and humidity data of the atmosphere. The middle of the supporting frame is fixedly connected with an equipment waterproof box, and two particulate matter sensors, a data collector, an airflow pump and a power source are installed in the equipment waterproof box. The instrument triggers a potential event by monitoring a jump characteristic of an infrared scattering signal, and performs cross validation in combination with two independent physical dimensions, i.e., environment relative humidity and particulate matter concentration. The signal change caused by real water vapor condensation fog under the high humidity condition can be effectively distinguished from the signal change caused by increase of the concentration of particulate matter in the air, and high-confidence-coefficient automatic identification of the dense fog process is achieved.

This utility model relates to the field of environmental monitoring technology, specifically a multi-point water sampling device for environmental monitoring. It includes a drone, a telescopic device, and a suction head. A protective box is located at the center of the drone's bottom wall. The telescopic device includes a support box, a rotating rod, and a lifting block. The support box has a cavity, and the protective box houses a rotating motor. The rotating rod passes through and is threadedly connected to the lifting block. A connecting plate is located on the bottom wall of the lifting block. The suction head is located on the bottom wall of the connecting plate, and a connecting pipe with a water pump is located at the upper end of the suction head. The connecting pipe passes through the connecting plate. A sampling bucket is located on the upper side wall of the drone. The output end of the water pump in the connecting pipe passes through the lower end of the side wall of the sampling bucket. This device can quickly and accurately reach any sampling point in a wide body of water, greatly improving sampling efficiency and coverage, and enhancing the comprehensiveness and accuracy of the sampling.

The invention discloses an irregular automatic sampling device for lime in a sintering process and a sampling control method. The irregular automatic sampling device is used for sampling lime in a lime conveying pipeline. The device comprises a pneumatic dome valve mounted on a lime conveying pipeline and an automatic control system, wherein the automatic control system is used for controlling the opening and closing of the sampling pneumatic dome valve. An irregular automatic sampling program is written in the automatic control system, an operator needs to manually set the total sampling time and the sampling frequency according to the lime amount and the air conveying speed of the lime tank truck, the program automatically generates several random sampling time nodes according to the set time range and the sampling frequency, and irregular automatic sampling of lime is achieved. The device can reduce the labor intensity of personnel, improve the operation safety, avoid the interference of human factors on the sampling process, and ensure that the sample has higher randomness and representativeness.

The utility model provides a natural gas on-line continuous accumulation sampler system which comprises a sampling valve, a pressure stabilizing valve, a four-way electromagnetic valve, a quantitative sampling piston pipe, a gas storage one-way valve, a piston gas storage bottle, a gas inlet pipeline and a gas exhaust pipeline, the gas inlet pipeline is connected with the sampling valve, the sampling valve is connected with the quantitative sampling piston pipe through a pipeline, and the gas exhaust pipeline is connected with the gas storage one-way valve. The pressure stabilizing valve and the piston gas storage bottle are connected with a pipeline between the sampling valve and the quantitative sampling piston pipe through pipelines, and the quantitative sampling piston pipe is connected with the four-way electromagnetic valve and the gas storage one-way valve through pipelines. The four-way electromagnetic valve is connected with the pressure stabilizing valve and the exhaust pipeline through pipelines, and the gas storage one-way valve is connected with the piston gas storage bottle through a pipeline.

This invention relates to a DGT sampling device and method based on a glass sponge biomimetic eddy current anchoring structure, belonging to the field of environmental monitoring technology. The DGT sampling device includes a biomimetic outer shell, a filter protection layer, a diffusion layer, a bonding layer, and a base. The biomimetic outer shell includes a base grid layer and spiral guide ridges arranged along the axial direction of the outer shell on the outer surface of the base grid layer. The two ends of the biomimetic outer shell along its length are a closed end and an open end, respectively. The filter protection layer is disposed at the open end of the biomimetic outer shell. The diffusion layer is disposed on the side of the filter protection layer away from the biomimetic outer shell. The bonding layer is disposed on the side of the diffusion layer away from the filter protection layer. The base is used to fix the filter protection layer, diffusion layer, and bonding layer to the biomimetic outer shell. This invention aims to solve the problems of low mass transfer efficiency, measurement accuracy greatly affected by hydrodynamics, and susceptibility to physical wear and biofouling in existing DGT sampling technologies.

The invention discloses a coal reservoir permeability test optimization method and system, and the method comprises the steps: carrying out the clustering analysis of coal samples of different coal orders through a K-means clustering and random forest algorithm, and constructing a permeability test database containing the permeability of different coal orders, the fracture pressure, the pore characteristics and other parameters; on the basis of a CT scanning result of the coal sample, physical characteristics such as a pore structure and fracture distribution of the lump coal are analyzed, a representative position is selected for sample preparation, and a fracture pressure interval of the sample is pre-judged according to a database; intelligently adjusting a pressurization strategy according to the pre-judgment interval, and switching to slow gradient pressurization when the pressure is close to the fracture pressure of the coal sample; and according to the measured data points, abnormal points and invalid data points in a fracture area are automatically identified and eliminated based on a random forest algorithm, representative data points are optimally selected in a permeability test stable section and a characteristic inflection point interval, and finally data constraint and fitting correction are performed through a P50 probability method. The method can improve the efficiency and accuracy of the laboratory coal permeability test.

The utility model discloses a multi-point collection smoke dust detector, which belongs to the technical field of smoke dust detectors and comprises a smoke dust detector body and a sampling component, the sampling component comprises a vertical pipe and a bottom pipe, two guide grooves are arranged on the outer surface of the bottom of the vertical pipe, and the bottom of the vertical pipe is connected with the bottom of the bottom pipe. Through the structural design of the vertical pipe, the bottom pipe and the bearing piece, the filter screen can be conveniently and rapidly disassembled, the disassembly and assembly time is effectively shortened, the operation difficulty is reduced, and the maintenance efficiency of the filter screen is greatly improved; by means of the structural design of the collecting piece, air at multiple point positions can be efficiently sampled, collection of air samples is enriched, representativeness of the air samples is guaranteed, and accuracy of detection data is improved.

The invention provides a river water environment-friendly monitoring and sampling device, and belongs to the technical field of water body sampling, and the river water environment-friendly monitoring and sampling device comprises a sampling barrel, a mounting plate, an L-shaped oil pipe, a pressure sensor, a closed ring, a propeller and an unmanned aerial vehicle. At the moment, a sampling opening in the sampling barrel is sealed by a sealing ring, after the sampling barrel is put into a specified sampling depth, a propeller rotates to temporarily stay the sampling barrel and a mounting plate at the specified depth in a river, and then the sampling barrel rotates by a circle by taking the central axis as a rotating axis, so that a driven piston in an L-shaped oil pipe transmits force borne by a pressure-bearing piston to a pressure sensor; the pressure detection end of the mounting plate detects a circle of the side wall of the sampling barrel to obtain the position with the maximum pressure, the position is the position where the sampling opening directly faces the water flow direction, then the sampling barrel rotates to the position, and the closed ring opens the sampling opening to sample river water directly facing the water flow direction.

The invention discloses a power distribution network building photovoltaic bearing capacity assessment method and system, and the method comprises the steps: obtaining predicted meteorological covariable data of a power distribution network connected with building photovoltaic, inputting the predicted meteorological covariable data into a trained condition diffusion model, and outputting photovoltaic output distribution. The method comprises the following steps: defining Renyi divergence based on photovoltaic output distribution and real probability distribution corresponding to the photovoltaic output distribution, establishing a dynamic distribution robust fuzzy set constrained by a dynamic radius based on the Renyi divergence, and establishing a two-stage bearing capacity distribution robust optimization model; and solving the two-stage bearing capacity distribution robust optimization model by using a column and constraint generation algorithm based on the dynamic distribution robust fuzzy set to obtain an optimization result, and obtaining the maximum photovoltaic bearing capacity based on the optimization result, thereby effectively improving the accuracy, flexibility and robustness of power distribution network photovoltaic bearing capacity evaluation.

The utility model discloses a copper smelting flue gas sampling port anti-blocking device which comprises a flue, a flue gas sampling pipe, a hydraulic mechanism and a piston, a notch is formed in the flue, an air chamber is fixedly arranged at the notch, a smoke blocking cover is arranged at an air inlet of the air chamber, one end of the piston is connected with the hydraulic structure, and a piston rod is arranged at the other end of the piston. The piston rod penetrates through the gas chamber and is connected with the smoke blocking cover, the smoke sampling pipe is inserted into the gas chamber and fixedly connected with the gas chamber, and a smoke sampling valve is arranged on the smoke sampling pipe. When smoke normally flows in the flue, certain pressure is applied to the smoke blocking cover, so that the smoke blocking cover and the air chamber are completely sealed, dust carried by the smoke only adheres to the outsides of the smoke blocking cover and the air chamber and cannot enter a smoke sampling pipe, the situation that a smoke sampling opening is blocked is fundamentally eliminated, and the real-time performance, representativeness and accuracy of measured data are guaranteed.

This utility model discloses a gas sampling and storage device, relating to the technical field of sampling and storage devices. The utility model includes a storage cylinder and two anti-slip pads fixedly connected to the outer wall of the storage cylinder. It also includes: a storage section disposed at the bottom of the storage cylinder; a sampling section mounted on the storage cylinder; the storage section includes a first storage component mounted at the bottom of the storage cylinder; and an exhaust component mounted on the first exhaust component; the first storage component includes a connecting pipe communicating with the bottom of the storage cylinder. By incorporating a storage section, this utility model solves the problem in existing sampling and storage devices where backflow during sampling is difficult to prevent, leading to the mixing of external gas into the sample, compromising the representativeness and purity of the sample, causing deviations in subsequent analysis results, and also preventing leakage of collected gas and waste of sample.

This invention discloses a local heating device and control method for a dummy used in automotive air conditioning thermal comfort testing. The device includes a dummy body with arrayed first and second heating modules on its back, buttocks, and thighs. Each module consists of a heat-insulating seat, a layered copper heat-conducting core, an exposed heat flow sensor, a built-in temperature sensor, and ceramic heating elements. An elastic push rod inside the dummy ensures close contact between the module and the seat. The heating elements and sensor array are connected to a PID control module and communicate with a host computer. The control method simulates a real-world scenario of preheating before contact, maintaining constant temperature heating in winter and adaptively switching between passive monitoring and constant power modes in summer. It supports differentiated target temperature allocation and contact pressure compensation. This invention can realistically simulate heat exchange between the human body and the seat under all operating conditions, without thermal plume interference, significantly improving the accuracy of cabin thermal comfort assessment.

The utility model discloses a simple device for water quality detection, and relates to the technical field of water quality detection. Comprising a suitcase main body, the suitcase main body is provided with a mounting mechanism for water quality detection equipment, and the mounting mechanism comprises the following steps: shaking a test tube to enable a water source and pH test paper to be in full contact and react more fully, so that inaccurate detection results caused by local concentration difference are avoided, and the detection results can better represent the pH value of a whole water sample; the detection accuracy and reliability are improved, shaking promotes material exchange between a water sample and the test paper, the reaction reaches a balanced state more quickly, the test paper can present a stable color more quickly, so that the detection time is shortened, the detection efficiency is improved, the test tube is shaken without additional complex equipment or operation steps, and the detection accuracy and reliability are improved. Therefore, full contact between a water source and the test paper and mixing of the water source can be realized, and a user can conveniently and quickly detect water quality in different scenes.

The invention discloses a data expansion and exoskeleton joint end-to-end torque estimation method based on a diffusion model, and the method comprises the steps: carrying out the normalization processing of time series data from a multi-source sensor, carrying out the fragmentation according to a fixed length, and constructing a training sample with a motion class label; then, training a classifier-free conditional diffusion model by adopting a sample, and simultaneously learning conditional and unconditional denoising mapping relationships in a manner of randomly inactivating category conditions; in the generation stage, based on a classifier-free condition guidance mechanism, multi-modal time series data with specified motion category features are gradually generated from random noise; and finally, fusing the generated synthetic data with real acquired data to train a joint torque end-to-end prediction network, thereby realizing joint torque estimation of input sensor time sequence data. The method improves the prediction precision, generalization ability and stability of the end-to-end torque estimation model in a multi-action and few-sample scene, and has a good engineering application value.

The utility model discloses a kind of cleaning devices of automatic compensation, including main part, cleaning part and compensation part, the compensation part is located in the accommodating groove, and it is used to drive the cleaning part and resist on the conveying work surface, automatic compensation operation is carried out during cleaning operation, without manual intervention, greatly improve work efficiency, reduce labor cost, while reducing the error and risk that human operation can bring, by the deformation restoring force of compensation part, uneven situation on conveying work surface can be automatically adapted, ensure that cleaning part is always closely attached to conveying work surface, effectively cope with the conveying work demand under different material, different working condition, improve the versatility and stability of equipment, effectively remove residual material, avoid sample mixing, guarantee the purity and representativeness of sample, to improve the accuracy of detection result, facilitate installation and maintenance, improve the reliability and durability of equipment.

The utility model discloses a water flow channel sampling device, and relates to the technical field of nuclear power station operation and maintenance, the water flow channel sampling device comprises a sampling net basket, one side of the sampling net basket facing the upstream of the water flow is provided with a net basket inlet, and the net basket inlet is arranged close to the upper part of the sampling net basket and is configured to allow water creatures to enter the sampling net basket along with the water flow; a blocking net is arranged on at least one surface, facing the downstream of the water flow, of the sampling net basket, and the blocking net is configured to allow the water flow to pass and block entering aquatic organisms; the positioning assembly is connected to the sampling net basket, the positioning assembly comprises at least one telescopic supporting piece, and the telescopic supporting piece is configured to be adjustable in length, so that the two ends of the telescopic supporting piece abut against the two side walls of the water flow channel respectively. According to the sampling device, representativeness and accuracy of sampling data are guaranteed, stable work of the sampling net basket is guaranteed, operation is easy and convenient, time and labor are saved, and the placing and recycling efficiency of the sampling device is improved.

The utility model discloses a paper pulp supply pipeline sampling device which comprises a supply pipeline, the outer surface of the supply pipeline is fixedly connected with a fixing plate, the right surface of the fixing plate is fixedly connected with a driving motor, the output end of the driving motor is fixedly connected with a lead screw, and the outer surface of the lead screw is in threaded connection with an L-shaped fixing plate. The lower surface of the L-shaped fixing plate is fixedly connected with a stepping motor, the output end of the stepping motor is fixedly connected with a rotating shaft, and the outer surface of the rotating shaft is fixedly connected with a rotating disc. By arranging a fixing plate, a driving motor, a lead screw, an L-shaped fixing plate, a sliding rod, a connecting frame, a fixing column, a connecting strip, a connecting rod, a sleeve, a blanking hole, a through hole and other structures, the sampling amount of paper pulp each time can be adjusted, so that the representativeness of samples is ensured, by arranging a stock bin, a drawing box and a sampling chamber, the paper pulp sampled at a time can be divided into three groups of samples, and the sampling efficiency is improved. Therefore, the accuracy of subsequent detection results is improved.

The utility model provides a ground breaker for construction project quality detection, which relates to the technical field of construction project quality detection equipment and comprises a cart body, slide rails arranged on two sides of the cart body and a ground breaking mechanism movably connected with the slide rails. The cart body has preset bearing capacity, and wheels are arranged on the two sides of the bottom end of the cart body. The ground breaking mechanism is slidably connected with the sliding rail through a supporting table. A sampling mechanism is arranged on the supporting table and penetrates through the soil breaking mechanism; through the arrangement of the soil breaking mechanism, the sampling mechanism and the storage box, in the soil breaking process of the spiral drill, the spiral feeding rod can work synchronously, the working time of the spiral feeding rod can be freely controlled according to the sampling depth, and soil at the position needing to be sampled is output into a storage drawer of the storage box through the spiral feeding rod; through cooperative work of the soil breaking mechanism, the sampling mechanism and the storage box, the working efficiency is improved, and the integrity and representativeness of a sampled sample are guaranteed.