278 results about "Pollution prevention" patented technology

The invention relates to the technical field of atmospheric dust pollution prevention and environmental protection, and discloses a multi-objective optimization layout method for dust monitoring points of a bulk cargo port, which comprises the following steps: processing historical meteorological data and port geographic information, and calculating the comprehensive evaluation concentration of each candidate grid point in combination with a pollutant diffusion model; constructing a multi-target nonlinear mixed integer programming model taking maximization of environment sensitive point coverage and minimization of concentration interpolation deviation as target functions, wherein the model comprehensively considers multiple reality constraints; solving the model by adopting an improved genetic algorithm to obtain an optimal solution set capable of forming tradeoff among different targets; and carrying out quantitative evaluation on the solution set through preset monitoring area coverage rate and monitoring accuracy indexes, and determining an optimal monitoring point position layout scheme. According to the invention, a scientific and quantitative optimized layout scheme can be provided for bulk cargo port dust monitoring, and the reliability and spatial representativeness of a monitoring network are improved.

The invention relates to the field of water environment pollution detection and analysis, in particular to a water environment pollution detection and analysis system and method based on the Internet of Things, and solves the problems of sampling redundancy, missing detection, high-dimensional data over-fitting, difficulty in traceability and early warning lag in traditional detection. The system comprises a monitoring acquisition module, a water quality anomaly detection module, a pollution tracing module, a pollution early warning module and a database. The monitoring acquisition module adopts chaotic adaptive sampling to adjust sensor frequency, and entropy optimization water quality data is obtained by combining permutation entropy and collaborative filtering denoising; the water quality anomaly detection comprises the following steps: standardizing data into high-dimensional point clouds, calculating a Betti number and a non-equilibrium state entropy, and fusing to generate a comprehensive pollution topological entropy index; according to pollution traceability, a dynamic graph and a diffusion kernel matrix are constructed by using GNN, and the optimal source intensity is solved through quantum annealing; the range is predicted through a diffusion equation for early warning, and information is integrated to generate a report to be pushed to users. The method corresponds to a module flow and provides support for pollution prevention and control.

The invention belongs to the technical field of crop pollution prevention, and particularly relates to a rice heavy metal adsorption and isolation method based on iron agent regulation and control. According to the method, the iron agent is applied to the polluted rice field soil to induce the soil-rhizosphere interface to form an iron film, heavy metals (such as As, Cu, Pb and Cd) are fixed by virtue of adsorption and complexing effects of the iron agent, and migration of the heavy metals to rice roots is reduced, so that accumulation of the heavy metals at edible parts (leaves and ears) of the rice is reduced; the tolerance of the rice in a polluted environment is enhanced; and the risk of heavy metals in a food chain is reduced. Experiments show; through treatment of an iron film formed by a certain iron-based concentration, accumulation of the heavy metals in the rice leaves can be remarkably reduced, and the accumulation amount of the heavy metals in the rice leaves is far lower than the accumulation amount (1 / 40-1 / 120) of the heavy metals in rice roots. The invention provides an effective solution for farmland soil remediation and crop safety production.

The utility model provides a self-service tableware distribution device which comprises a housing and at least one set of stock bin mechanism arranged in the housing, the stock bin mechanism comprises a tableware containing bin and a tableware blanking bin, the tableware containing bin is used for stacking and storing tableware, and the tableware blanking bin is sequentially provided with an upper mold, a middle mold and a lower mold. The three parts are respectively provided with channels for controlling the sequential falling of tableware; in the initial state, the middle mold is aligned with the upper mold and staggered with the lower mold, and when a user presses a switch or pulls tableware, channels between the molds are in linkage alignment, and a single piece of tableware is released to a taking position; the tableware head triggers the linkage assembly in the taking process, the middle mold is driven to reset, and preparation of the next piece of tableware is achieved. The device provided by the utility model is reasonable in structure, does not need to be electrically driven, completes tableware distribution by means of mechanical linkage, has the advantages of automatic control, single-support taking, sequential supply, pollution prevention and the like, and is suitable for cafeteria, shared kitchens, enterprise canteens and other scenes.

The invention relates to the technical field of water supply network pollution monitoring, in particular to a water supply network water pollution rapid detection method. The method comprises the following steps: acquiring water supply pipe network operation data, extracting pipe network structure information, detecting a water flow direction, and constructing a water supply pipe network topological graph; on the basis of the topological graph and the operation demand data, the negative pressure overload condition of the pipe network is judged, the pipeline damage condition is estimated, then the conditions of external pollutant invasion and hydraulic unbalance are analyzed, and the pollutant backflow trend and the water flow retention area are determined; the conditions of microorganism breeding and internal water quality deterioration are evaluated by combining a water flow retention area and a pollutant backflow trend, and tracing and positioning of a pollution source are carried out; pipe network structure adjustment, water flow regulation and control and pollution prevention and control measures are implemented according to the pollution source tracing result, and optimization treatment of the water supply pipe network is achieved; optimization treatment of the water supply pipe network is achieved through pollution monitoring of the water supply pipe network.

The invention provides a dangerous waste landfill leakage emergency shield blocking and co-processing method and system, and relates to the technical field of underground pollution prevention and control and environment emergency treatment. On-site monitoring data are collected under the unified space-time reference, a pollution feather envelope line and shield curtain geometry are determined based on rapid inversion, a shield tunneling machine is driven to form a waterproof curtain, functional pipe pieces are arranged, an inward flow field is established in the curtain, and the water level difference and the negative pressure level are controlled in real time. The control terminal calculates a risk evaluation and dosage flow velocity instruction set according to the monitoring data and the extraction parameter set, and issues the risk evaluation and dosage flow velocity instruction set to the grouting, extraction and agent injection system to realize synchronous operation of curtain reinforcement and in-situ chemical repair; when the risk and repair indexes reach the standard, load reduction and plugging are carried out, and long-term monitoring is carried out. According to the method, rapid sealing control, dynamic repairing and intelligent decision making of the hazardous waste leakage area are achieved, and the accuracy of emergency disposal is improved.

The invention discloses a carbon emission prediction method and device based on iTransform, and the method comprises the steps: constructing an improved data preprocessing network based on data features, and carrying out the preprocessing of carbon emission data through the data preprocessing network; on the basis of the data preprocessing network, in combination with multivariable and non-stationary data features of the data preprocessing network, selecting an adaptive converter architecture, integrating a wavelet convolution module for capturing multi-scale features of data, and introducing a frequency enhancement channel attention mechanism to serve as an improved iTransform prediction network; inputting the preprocessed carbon emission data into an improved iTransform prediction network, and outputting a carbon emission prediction value at a future moment; pollution prevention and control are assisted based on the carbon emission prediction value, and environmental pollution is reduced. The device comprises a processor and a memory. According to the method, the accuracy of carbon emission content prediction in the future and the precise CO2 emission prediction capability are guaranteed, early warning and regulation prompts can be provided for related industries, emission reduction of each industry is supported, pollution prevention and control are assisted, then environment improvement is promoted, and the pressure of carbon emission on an ecological system is relieved.

The invention discloses a zoning collaborative air pollution monitoring method and system, and the method comprises the steps: obtaining multi-source basic data of a monitoring region, calculating a pollution risk index and an attention index, and carrying out the weighting, thereby obtaining a comprehensive priority; dividing into sub-regions of different levels according to the priority, and configuring devices of different types or sensitivities to form a monitoring network; gas concentration and video image data are collected, pollution event comprehensive confidence is generated through fusion analysis, and when the pollution event comprehensive confidence exceeds a threshold value, a pollution event is judged and early warning is performed; the pollutant diffusion trend is predicted based on early warning, and a linkage control instruction for the treatment equipment is automatically generated; a two-factor dynamic partition model fusing pollution risks and regional attention is constructed, and a Bayesian fusion judgment algorithm that only results can be recognized by gas sensing data and videos is combined, so that complete closed-loop control from intelligent point distribution, accurate sensing and traceability prediction to automatic linkage is formed; and the overall efficiency and sustainability of regional pollution prevention and control are remarkably improved.

The invention relates to a data fusion and updating method for soil and groundwater pollution, and the method comprises the steps: obtaining historical four-dimensional data which comprises historical industry production data, historical pollution monitoring data, historical policy and regulation data, and historical literature research data; constructing a metadata blood relationship graph based on historical four-dimensional data; obtaining pollution prevention and control result information based on the metadata blood relationship graph; obtaining current four-dimensional data, wherein the current four-dimensional data comprises current industry production data, current pollution monitoring data, current policy and regulation data and current literature research data; and updating the pollution prevention and control result information based on the current four-dimensional data and metadata blood relationship graph to obtain target pollution prevention and control result information. The whole process of soil and groundwater pollution in the non-ferrous metal smelting industry can be analyzed, prevented and controlled by combining multi-modal data, so that the scientificity and effectiveness of pollution prevention and control are improved.

The utility model relates to the field of portable sewage suction filtration devices, and discloses a portable sewage suction filtration device for water environment pollution control, which comprises a portable sewage suction filter, a support frame is fixedly mounted at the bottom of one side of the portable sewage suction filter, and a collection bottle is placed on the upper surface of the support frame. A supporting table is fixedly mounted on one side of the upper surface of the portable sewage suction filter, a filter box is mounted on the upper surface of the supporting table, a plurality of mounting grooves are formed in the bottom of one side of the outer surface of the filter box, placing frames are mounted in the mounting grooves, filter paper is placed in the placing frames, and sealing clamping blocks are mounted outside the positions, penetrating through openings of the mounting grooves, of one sides of the placing frames. According to the portable sewage suction filter, a plurality of pieces of filter paper are mounted in the filter box through the placement frame, so that the effect of conveniently replacing the filter paper is achieved, the overall filtering effect of the filter box on sewage is improved, the problem that the filter paper is blocked by impurities to affect the collection of filtered water by a collection bottle is solved, and the overall use efficiency of the portable sewage suction filter is improved.

This invention discloses a method and system for dust suppression during the loading of dry bulk cargo on railway lines. The method includes: if loading operations are detected to have commenced on the main railway line, determining the area to be suppressed based on on-site loading data; acquiring environmental information corresponding to the area to be suppressed, including wind direction information; determining the items to be loaded based on the on-site loading data, and determining the corresponding moisture content of the items; determining a control strategy for a spray system based on the wind direction information, moisture content, and the area to be suppressed, and adjusting the operating parameters of the spray system based on the control strategy to suppress dust during the loading process. This invention achieves precise control of dust pollution during railway loading, overcoming the limitations of traditional fixed dust suppression methods, and significantly improving pollution prevention efficiency and resource utilization effectiveness.

The utility model relates to the technical field of automation equipment, in particular to a jacking, lifting and carrying mechanism which comprises a linear motor module, the linear motor module is connected with a UVW alignment table, and the linear motor module drives the UVW alignment table to linearly move back and forth; jacking air cylinders are arranged on the two sides of the UVW alignment table and connected with jacking suction rods, and the jacking air cylinders drive the jacking suction rods to ascend and descend. A suction rod lifting groove is formed in the UVW alignment table, the jacking suction rod is located in the suction rod lifting groove, and the jacking suction rod can stretch out of the suction rod lifting groove. Compared with the prior art, the suction rod lifting groove is formed in the UVW alignment table of the jacking, lifting and carrying mechanism, the jacking suction rod is located in the suction rod lifting groove, and the jacking suction rod can stretch out of the suction rod lifting groove to lift materials on the UVW alignment table by a certain height so as to leave the upper surface of the UVW alignment table; and therefore, the carrying assembly can be conveniently contacted with the materials from the lower part for carrying, material surface contact and pollution prevention are facilitated, and continuous and normal production is facilitated.

The present application relates to a kind of high nutrient high activity chemical fertilizer biological compound fertilizer and its preparation and application, belong to agricultural fertilizer technical field.The high nutrient high activity chemical fertilizer biological compound fertilizer of the present application includes inorganic fertilizer and microbial inoculant, the nitrogen phosphorus potassium nutrient content of the chemical fertilizer biological compound fertilizer is greater than 40%, and microbial viable count is above 200 million cfu / g, also includes microbial protective agent, the mass ratio of the microbial protective agent and microbial inoculant is ≥1.The high nutrient high activity chemical fertilizer biological compound fertilizer product of the present application realizes the deep compound of chemical fertilizer and active microorganism, has multiple efficacy of chemical fertilizer and microbial fertilizer, overcomes the neck blocking technical problem that chemical fertilizer and microbial fertilizer are incompatible in production, storage and transportation, use process, significantly improves chemical fertilizer utilization efficiency, reduces fertilizer use cost, solves the problem that microbial fertilizer cannot be generally used in field crops, integrates fertilizer yield and quality improvement, fertile soil and pollution prevention and other functions.

The utility model relates to the technical field of disposable paper cups, and provides an anti-pollution universal disposable paper cup taking device which comprises a paper cup cylinder, a fixing ring is fixed to the lower end of the paper cup cylinder, an adjusting assembly is fixed to the bottom face of the fixing ring, and the adjusting assembly comprises a first shell, a second shell, a movable plate and an adjusting disc. The first shell is fixed to the bottom face of the fixing ring, a fixing block is fixed to the inner wall of the upper end of the first shell, a limiting buckle is fixed to one end of the fixing block, a first protruding block is fixed to the outer wall of the limiting buckle, a notch is formed in the outer wall of the first shell, and a second shell is fixed to the lower end of the first shell. The adjusting disc is rotated through the handle, the four movable plates can be driven to move, the size of the space among the four supporting buckles is controlled, and therefore the paper cup holder is suitable for disposable paper cups of different sizes, pollutants can be well isolated through the dustproof cover and the brush sealing ring, it is guaranteed that the paper cups are clean and sanitary, and the paper cup holder has high practicability.

The invention relates to the technical field of test sample collection, in particular to an anti-pollution collection device for excrement and urine test samples. Comprising a sampling unit, the sampling unit comprises a sampling bedpan, and a urine sampling pool and an excrement sampling pool are arranged at the top of the sampling bedpan; the bottoms of the urine sampling pool and the excrement sampling pool are respectively communicated with a group of movable hoses, and the output ends of the two groups of movable hoses are respectively and movably connected with an excrement treatment unit and a urine treatment unit. Manual transfer and touch are not needed in the whole process, other external containers are not needed for transfer, excessive contact with external air is avoided, excrement and urine samples can be separately collected at the same time, the functionality of the device is improved, meanwhile, the purpose of pollution-free collection is achieved, the accuracy of follow-up inspection is guaranteed, and the detection efficiency is improved. And the automation degree of the device is also improved.

The invention relates to the technical field of regional soil pollution health risk assessment, in particular to a regional soil pollution health risk assessment method based on POI data, and the method comprises the steps: firstly obtaining and preprocessing multi-source heterogeneous data, and constructing a POI spatial database; adopting a Kriging spatial interpolation method to generate a pollutant concentration spatial distribution grid map layer; then combining kernel density estimation and dynamic weight correction to construct a population activity intensity index surface; dynamically generating an exposure evaluation unit, and calculating the multi-path daily average exposure dose of people of different ages; and finally, quantifying the multi-path health risk, generating a risk level distribution map, and identifying the dominant POI category of the high-risk area. According to the method, deep fusion of multi-source data is realized, the association between population activity characteristics and pollution exposure is accurately depicted, the evaluation accuracy and suitability are improved, and a scientific decision basis is provided for pollution prevention and control and risk management and control.

The invention belongs to the field of dressing change vehicles, and particularly discloses a dressing change treatment vehicle which comprises a moving vehicle, a treading self-locking height adjusting mechanism, a medicine groove basket, a variable dimension type treatment table and a self-disinfection storage bucket. According to the situation that the dressing change treatment vehicle is large in occupied space and inconvenient to store, a spatial dimension change mode is adopted, and the multiple technical effects that the dressing change treatment vehicle is large in occupied space, inconvenient to store and capable of preventing pollution of drugs are effectively achieved through a multiple embedded telescopic movement mode; according to the situation that the height of the dressing change treatment vehicle cannot be adjusted, and the waist pressure of medical staff is increased, the technical effect that the height of the dressing change treatment vehicle is flexibly adjusted is achieved in a stepping self-locking type lifting mode, and the dressing change treatment vehicle is perfectly matched with the medical staff of different heights.

The invention provides a liquid crystal pollutant underground water detection system based on fluorescence tracing, and relates to the technical field of underground water environment monitoring and pollution prevention and control. According to the system, three types of core structures BAs, CBAs and FBAs of the LCMs serve as targets, a specific fluorescent probe is designed, a water sample is accurately obtained through an underground water in-situ sampling module, and after fluorescence signal amplification and anti-interference processing are conducted, LCMs type recognition and concentration quantification are achieved in combination with a machine learning algorithm. The core innovation lies in the structural adaptive design of the targeted fluorescent probe, the underground water quality anti-interference technology, engineering in-situ detection integration and multi-component synchronous analysis. Practice verification shows that the detection limit of the system to BAs, CBAs and FBAs LCMs is as low as 0.01-0.05 ng / L, the response time is less than or equal to 30 min, the turbidity resistance and ion interference resistance are high, the system is adaptive to engineering scenes such as in-well monitoring and leachate tracing, rapid screening and dynamic tracking of underground water LCMs pollution can be realized, and engineering technical support is provided for underground water pollution prevention, control and restoration.

The application relates to the technical field of water quality detection, and particularly discloses a water quality detection device and method based on water environment pollution prevention and treatment. The device comprises a water quality sampling assembly, which is used for collecting stratified water quality samples at different depths of a water area to be detected; a sample processing assembly, which is connected with the water quality sampling assembly and is used for mixing the stratified water quality samples; a water quality data detection assembly, which comprises a first water quality data collector and a second water quality data collector; and a data processing assembly, which is electrically connected with the water quality data detection assembly, is used for processing stratified water quality index data and mixed water quality index data and outputting the data, and comprises a data preprocessing unit and a multidimensional data fusion unit which are connected with each other and are used for outputting standardized water quality data, and the multidimensional data fusion unit is used for fusing and processing the standardized water quality data, so that the detection precision of the water quality detection device is improved.

The application relates to the field of photocatalytic materials, and discloses a preparation method and application of a Ge-doped ZnSn(OH)6 photocatalyst. The Ge-doped ZnSn(OH)6 photocatalyst is prepared by using SnCl4.5H2O, Zn(Ac)2.2H2O, alkali metal hydroxide, methyl cellulose and GeO2 as raw materials through a hydrothermal synthesis method. The crystalline powder can be obtained without high-temperature sintering, the catalyst can generate a large amount of electrons and hydroxyl radicals, has excellent degradation effect on volatile organic compounds such as methylbenzene, can realize 100% removal effect on 50ppm concentration methylbenzene within 10 minutes, has excellent deep mineralization capacity, and has great potential for pollution prevention and treatment of atmospheric environment.

The invention belongs to the technical field of soil sampling, and particularly relates to a soil seed bank stratified sampler for aeolian sandy soil, which comprises an inner cylinder and an outer cylinder, the outer cylinder sleeves the outer side of the inner cylinder, and a plugging mechanism is connected between the inner cylinder and the outer cylinder. The plugging mechanism comprises a first annular plate rotationally arranged on the outer side of the outer cylinder in a sleeving mode and a second annular plate fixed to the bottom of the inner cylinder, the plugging mechanism comprises a plurality of conical triangular plates rotationally arranged at the bottom of the second annular plate, and the conical triangular plates are distributed in a circumferential array mode. Through an innovatively designed stratified sampling structure, soil seed bank samples in a target area and a target depth can be accurately collected, and the problem of sampling depth deviation caused by high flowability of aeolian sandy soil is effectively avoided. The sampler adopts an anti-pollution isolation mechanism, so that cross contamination of interlayer samples is avoided in the sampling process, the obtained spatial distribution data of the soil seed bank is real and reliable, and high-precision basic data support is provided for surveying and mapping geographic information of a desert ecosystem.

The utility model relates to the technical field of electronic atomization, in particular to a suction nozzle assembly and an atomization device.The suction nozzle assembly comprises a support unit, a suction nozzle piece and a cover body, and a mounting cavity is formed in the support unit; the suction nozzle piece is rotationally arranged in the mounting cavity, the suction nozzle piece has a first state and a second state which can be switched mutually, and in the first state, the suction nozzle piece is communicated with the atomization channel; in the second state, the suction nozzle piece is disconnected from the atomization channel; and the cover body is rotationally connected with the bracket unit and is used for covering or opening the mounting cavity so as to protect or expose the suction nozzle piece. Due to the fact that the cover body and the suction nozzle piece can rotate, when the atomization device is not used, the suction nozzle piece can be switched to the second state, the cover body is rotated to cover the suction nozzle piece, the purposes of dust prevention and pollution prevention are achieved, damage to the health of a user is reduced, the contact time of an atomization substrate and the like and air is shortened, and therefore the use taste of the user is improved.

The invention provides an air quality index prediction method and device, equipment and a storage medium, and relates to the technical field of air quality prediction. The method comprises the following steps: acquiring pollutant concentration data from the starting moment of the day to the current moment, meteorological data of the day, historical meteorological data, corresponding historical pollutant concentration data and a target air quality index level of the day; according to the pollutant concentration data and the target air quality index level, the hour residual concentration of each pollutant in the residual time period of the day is determined; according to the current day and historical meteorological data and the corresponding historical pollutant concentration data, predicting the per-hour concentration change rate of each pollutant in the current day; according to the hourly concentration change rate, the hourly predicted concentration and the hourly distribution concentration of each pollutant in the remaining time period of the day are determined, and then the air quality index prediction result of the day is determined. The method can predict the air quality index after pollution prevention and control on the current day based on the air quality improvement target.

The exhibition system comprises an exhibition cabinet, an air outlet is formed in the side end of a glass cover at the top of the exhibition cabinet, a fan is installed in the exhibition cabinet, a filter screen is installed on a side door hinged to an opening in one side of the exhibition cabinet, and an air inlet pipe of the fan is communicated with a round opening in a partition plate in the exhibition cabinet. A drying assembly is installed on the partition plate and comprises a disc which is attached to the partition plate and installed in a rotating mode. Through the design of the rotary type six-station drying assembly, a standby station can be quickly switched to after a drying agent at a current working station is saturated, so that the system can still keep stable ventilation efficiency in a humid environment, and the V-shaped opening of the circular shell cover is matched with the locking mechanism, so that sealing and pollution prevention of a non-working drying cylinder are ensured, and the drying efficiency is improved. Compared with a traditional filter element, the filter element has the advantage that the replacement frequency is greatly reduced.

The application discloses a kind of ship painting workshop field environment monitoring systems, including field detection unit, control center and data acquisition network, field detection unit is installed in the integrated monitoring point of ship painting workshop field, for measuring the environmental parameter of integrated monitoring point;Control center is connected with field detection unit by data acquisition network, receives the data collected by field detection unit;The control center at least includes real-time database and and software management system, and software management system includes eight functional modules of system management module, real-time display module, prediction analysis module, alarm management module, interface module, report management, basic data management and green evaluation system etc..The application precisely monitors and traces the environmental quality of painting workshop, realizes targeted management;It can also carry out multi-dimensional analysis on monitoring data, provide decision support for environmental pollution prevention and control, and enhance the rapid response and disposal capacity of environmental emergencies.

The utility model discloses a powder coating spraying and baking hanger, and relates to the technical field of powder spraying hangers. The mounting rack structurally comprises a mounting rack body and a positioning cap, the mounting frame body comprises a vertical plate; at least one hook is fixed at the upper end of the vertical plate; an extension column is vertically fixed on one side wall of the lower end of the vertical plate; five supporting battens are uniformly distributed and fixed on the circumference of the free end of the extension column; a positioning insertion rod matched with a hub bolt hole is vertically fixed at the end part of the supporting batten; the positioning cap is mounted at the free end of the positioning insertion rod. The reinforcing rib plate is additionally arranged at the joint of the vertical plate and the extension column, so that the structural stability is improved, the high-temperature-resistant rubber positioning cap is matched with the frustum part to realize full-sealing and pollution prevention, and an anti-skid hook and a surface anti-skid structure of the positioning cap are integrated; the technical problems that according to an existing hanging tool, powder permeates into bolt holes, slipping is prone to occurring in operation, and high-temperature adaptability is insufficient are solved, so that production efficiency and spraying quality are remarkably improved, and operation and maintenance cost is reduced.

The utility model relates to the technical field of prevention and isolation devices, in particular to a water environment pollution prevention and isolation device which comprises a water environment pollution prevention and isolation device body, and in the using process of the device, a driving adjusting assembly of the device is controlled to be started, so that an isolation assembly at the tail end of the device is driven; in the rotating process of the transmission seat, a driving shaft in the transmission seat is driven to rotate, flow guide blades on the side face of the transmission seat rotate, the flow guide blades reversely stir water flow in the transmission seat, and a flow guide hole in the upper portion of a separation plate at the tail end of the transmission seat is led out to the sewage end; according to the invention, the flow guide holes are arranged, so that backflow vortexes are formed at one ends of the flow guide holes, sewage at one side is blocked at one position, a water environment at a sewage end is blocked, and a water source at the sewage end is prevented from entering other regions.

The invention belongs to the technical field of drilling and coring of road surface coring machines, and discloses an anti-pollution device of a road surface coring machine, the anti-pollution device comprises a splash-proof cylinder and a waste water collector, the splash-proof cylinder and the waste water collector are communicated through a drain pipe; a base is arranged at the bottom of the splash-proof barrel, a movable guide rail is arranged in the center of the middle of the splash-proof barrel, and the coring machine is arranged in the movable guide rail in a sliding mode. The coring machine can slide up and down along the moving track, when the coring machine slides downwards, a coring drill of the coring machine drills and cores on the road surface, cooling lubricating water used in the drilling process and chippings generated by drilling are thrown out by the rotating coring drill, and the chippings enter the waste water collector through the drainage pipe after being collected by the inner wall of the splash-proof barrel. The device has the beneficial effects that the working condition of splashing of waste water and chippings is effectively improved, the subsequent manual cleaning link is reduced, and the working procedure and cost are saved.

The utility model relates to the technical field of gas sample collection, and particularly discloses an anti-pollution air sampling pipe for hydrogen chloride sampling, which comprises a gas inlet pipe section, a reaction pipe section and an exhaust pipe section, the reaction pipe section is of a U-shaped structure, and the gas inlet end of the reaction pipe section is communicated and fixedly connected with the gas outlet end of the gas inlet pipe section; the gas outlet end of the reaction pipe section is communicated and fixedly connected with the gas inlet end of the exhaust pipe section, the gas outlet end of the exhaust pipe section is hermetically connected with a gas suction port of the flue gas sampling instrument, a gas inlet sealing element is mounted at the gas inlet end of the gas inlet pipe section, an exhaust sealing element is mounted at the gas outlet end of the exhaust pipe section, and a liquid adding element is arranged on the end side, close to the exhaust pipe section, of the reaction pipe section. The air inlet pipe section, the reaction pipe section and the exhaust pipe section are of an integrally-formed structure, the connecting cross beam is arranged between the inner sides of the two ends of the reaction pipe section, and the problem that before and after traditional hydrogen chloride is sampled, the structure of an air sampling pipe is integrally circulated, air gas is easily introduced additionally, and the measurement result of hydrogen chloride is interfered is solved.

The invention discloses a sterile rice finish machining disinfection device, and relates to the technical field of sterile rice processing.The sterile rice finish machining disinfection device comprises a feeding cylinder, a feeding port, a first disinfection assembly and a second disinfection assembly, and the first disinfection assembly comprises a conveying belt, a strip-shaped ultraviolet lamp tube, a vibration screening mechanism and an airflow screening mechanism; the second disinfection assembly comprises a connecting channel, an air inlet pipe and a branch air pipe. Double disinfection, screening classification and closed pollution prevention are achieved through the first disinfection assembly and the second disinfection assembly, rice is continuously irradiated in the dynamic conveying process through the conveying belt and the strip-shaped ultraviolet lamp tube, it is ensured that each particle can receive ultraviolet irradiation, disinfection dead corners caused by accumulation are avoided, and the quality of the rice is improved. Disinfection gas is introduced into the gas inlet pipe and is uniformly distributed through the branch gas pipes, and finally the gas holes are densely released, so that full contact of ozone and rice is ensured, uniform diffusion of the gas in the connecting channel and maximization of the contact area with the rice are ensured, meanwhile, the physical structure of the rice is not damaged by gas disinfection, and the original taste and nutrition of the rice are reserved.