183 results about "Chemical laboratory" patented technology

The invention discloses a multi-machine and multi-task scheduling system for an automatic chemical laboratory, and belongs to the field of automatic chemical experiment control systems. Comprising a task receiving module connected with a multi-machine multi-task scheduling module, a multi-task scheduling module connected with the multi-machine multi-task scheduling module, a multi-robot control module connected with a workstation control module, a multi-robot control module connected with the multi-machine multi-task scheduling module, and a workstation control module connected with the multi-robot control module. And the server is connected with the multi-machine multi-task scheduling module. The system can receive a chemical experiment task input by a user through an interactive graphic task interface, construct a formatted chemical experiment task flow through a rear end, optimize the formatted chemical experiment task flow into a task scheduling schedule through a constraint programming algorithm, and guide a robot and an automatic experiment work station to execute. Therefore, intelligent scheduling and automatic execution of multiple types of chemical experiments in an automatic chemical laboratory scene are realized.

The invention discloses an integrated chemical laboratory wastewater treatment device, belongs to the technical field of wastewater treatment, and provides a scheme as follows: a sewage inlet position can be adjusted through a steerable sewage inlet assembly, so that the integrated chemical laboratory wastewater treatment device can correspond to treatment tanks at different positions according to requirements, and the sewage inlet requirement of automatically switching different positions is met; after the steerable sewage inlet assembly corresponds to the treatment tank, a tooth valve and a tooth section are in transmission, a sewage outlet of a sewage inlet pipe can be automatically opened, direct sewage inlet operation is facilitated, meanwhile, transmission with a corresponding first gear can be achieved through a linkage assembly, and therefore the corresponding treatment tank can be automatically opened to be communicated with a three-way valve; meanwhile, the sewage inlet pipe can rotate to drive the first motor to automatically switch positions, so that the driving requirements of different positions are met, the use cost is reduced, the convection assembly can rotate in the treatment tank through transmission of the stirring assembly and the transmission assembly, and the purpose of up-and-down convection of the wastewater can be achieved; the mixing effect is improved.

The invention discloses a gas calibration and information monitoring method and system based on wireless communication, and relates to the technical field of intelligent environment monitoring, and the method comprises the following steps: arranging a sensor group in a chemical laboratory to monitor environment data in real time, and constructing a data processing platform to carry out data preprocessing and storage; establishing a gas concentration prediction model according to the random forest regression model, and evaluating the gas calibration precision; carrying out real-time gas concentration calibration by adopting a gas calibration formula, and carrying out qualification evaluation; combining the voltage and resistance of the sensor to predict and analyze the health state of the sensor, performing health assessment and generating a corresponding maintenance instruction; the state of the gas sensor is identified by using a broken line diagram, a thermodynamic diagram and color codes, and an operator is helped to quickly identify a gas concentration change trend and a high-risk area. According to the method, the operation efficiency and the maintenance management level of the gas monitoring system are effectively improved, and the method has great advantages especially in a complex experimental environment.

The invention relates to a chemical experiment instrument target detection method and device, equipment and a storage medium, and the method comprises the steps: carrying out the preprocessing of an obtained image of a chemical laboratory scene, and obtaining a preprocessing result; inputting the preprocessing result into a chemical experiment instrument target detection model based on an improved YOLO network to obtain bounding box coordinates and corresponding instrument category confidence; a chemical experiment instrument target detection model is obtained by improving a neck network of a YOLOv8 network, and a 3Dfusion module and an FPSF module are innovatively introduced into the neck network. According to the method, the technical problem of recognition challenges caused by variable scales, different angles and local shielding of chemical instruments is effectively solved, and accurate perception of complex laboratory scenes is realized.

The invention discloses a double-arm robot powder grinding system and method for an automatic chemical laboratory, and belongs to the field of grinding robots. The grinding pestle is mounted at the tail end of a grinding main arm of the double-arm robot through an elastic clamp; the six-dimensional torque sensor is mounted at the tail end of a grinding slave arm of the double-arm robot and connected with the grinding clamp holder, and the mortar and the soft shovel can be clamped through the grinding clamp holder; the RGBD camera is arranged on a grinding main arm of the double-arm robot and can shoot and collect an RGB image and a depth map of the grinding platform; the powder screening device can be used for screening the grinding powder in the mortar; and the main controller is in communication connection with the RGBD camera and the double-arm robot and can control the double-arm robot to conduct powder grinding, gathering and screening till the grinding task is completed. The system can control the double-arm robot to achieve a stable and efficient grinding task, the grinding efficiency is improved, and the expansion capacity can be guaranteed.

A rapid filtering device for a chemical laboratory comprises a filter box and a cover plate installed at the top opening of the filter box; a plurality of mounting holes are formed on the cover plate, and filters for filtering or rubber plugs for sealing the mounting holes are installed in the mounting holes; a storage plate detachably connected to the filter box is installed in the filter box, and collecting containers corresponding to the positions of the plurality of filters are installed on the storage plate; an exhaust assembly for exhausting air inside the filter box is connected to the bottom of the filter box; compared with the prior art, the coordinated arrangement of multiple groups of filters and collecting containers can realize the synchronous filtering operation of multiple groups of filters under the action of the exhaust assembly, so as to meet the filtering requirements of different chemicals, and after removing the storage plate, the filter can be cleaned under the action of negative pressure by continuously and repeatedly injecting blank reagents or cleaning solvents into the filters, and subsequently, it is only necessary to dump the waste solvent in the filter box, so that the overall cleaning is convenient and quick.

The utility model relates to the technical field of chemical laboratory equipment, and discloses tail gas treatment equipment for a chemical material laboratory, which comprises a base, a bearing plate is fixedly mounted at the left end of the upper part of the base, a filter is fixedly mounted at the upper part of the bearing plate, and a filter plate is movably sleeved in an inner cavity of the filter; a cover plate is fixedly installed at the upper end of the filter plate and arranged on the upper surface of the filter, a handrail is fixedly connected to the upper portion of the cover plate, a first valve is fixedly installed on the right portion of the filter, and a combustion chamber is fixedly installed on the right portion of the first valve and fixedly installed on the upper portion of the base. Combustion devices are fixedly installed on the upper portion and the lower portion of an inner cavity of the combustion chamber correspondingly, impurities in tail gas are removed through filtering, the phenomenon that the impurities interfere with tail gas purification is avoided, harmful gas in the tail gas is oxidized through the combustion devices, heated tail gas catalyzes follow-up chemical treatment, and quantitative gas is input into a treatment device through a buffer. And the tail gas fully reacts with the treating fluid.

The invention discloses a chemical laboratory dynamic obstacle detection method and a robot dynamic obstacle avoidance method, and belongs to the field of robot dynamic obstacle avoidance. The detection method comprises the following steps of: 1, acquiring a scene image; 2, extracting two groups of multi-scale feature maps; 3, performing optical flow matching and stereo matching to obtain initial optical flow prediction and initial parallax prediction; step 4, obtaining high-quality optical flow prediction and parallax prediction by using adaptive propagation; step 5, iteratively refining to obtain refined optical flow and parallax prediction; step 6, restoring the optical flow and parallax prediction to original resolution; step 7, training and supervising the recovered optical flow prediction and parallax prediction by using a weighted loss function to obtain optimized precision optical flow prediction and parallax prediction; and step 8, screening out a dynamic obstacle area through optical flow prediction, and judging whether a collision risk exists in combination with depth information. The method can fuse the optical flow and the parallax error to accurately detect the dynamic obstacle in the chemical laboratory, and is convenient for the robot to accurately and dynamically avoid the obstacle.

The invention discloses a chemical reaction gas real-time monitoring method and device and a storage medium, and belongs to the technical field of chemical laboratory safety, and the method comprises the steps: obtaining a video frame image, and carrying out the image synchronization through a timestamp; according to the y-axis coordinate information of the bubble contour, judging whether the bubble contour needs to be spliced with a next frame of image or not; performing optimal matching on bubble contours in the spliced images by using a Hungary algorithm to obtain matched bubble contours; acquiring a correction coefficient according to the matched bubble contour, and correcting the bubble contour according to the correction coefficient; inputting the corrected image and the coordinates of the bubble contour into a pre-trained DBPP-Net network, and outputting the equivalent diameter and the equivalent volume of the bubble; whether the chemical reaction speed is abnormal is judged, and real-time monitoring of chemical reaction gas is achieved; according to the invention, real-time monitoring of the chemical reaction gas amount is realized, and the problem that the reaction speed acquisition in the current chemical experiment process is not intelligent and automatic enough is solved.

The invention discloses a multi-workstation collaborative chemical experiment robot control system, and relates to the technical field of robot control. According to the system, through closed-loop collaboration of the chemical knowledge model module, the robot experiment execution module, the equipment management module and the multi-workstation collaborative scheduling module, intelligent design of an experiment process, full-process automatic execution, standardized integration of data and accurate optimization of parameters are realized, and the efficiency and repeatability of a chemical experiment are greatly improved; errors caused by manual intervention are reduced, the research and development process of chemicals is accelerated, meanwhile, the product performance standard-reaching rate is increased by means of a spectrum structure-activity relationship prediction model, efficient overall utilization of resources of multiple workstations is achieved, and the working efficiency is improved. The problems that in a traditional chemical experiment, cooperative scheduling of multiple workstations is not smooth, experiment process design depends on artificial experience, parameter adjustment lacks scientific data support, experiment data processing is fragmented, and product performance prediction precision is insufficient are solved.

The invention relates to an intelligent chemical laboratory mobile composite robot path planning method and device. The method comprises the following steps: modeling an intelligent chemical laboratory environment by adopting a grid map, and setting an obstacle and a starting point and a target point of a mobile composite robot in the grid map; on the basis of the heuristic function of the traditional A * algorithm, introducing an obstacle index factor to dynamically weight the predicted cost of the heuristic function; according to the starting point, the target point and the improved heuristic function, a forward and reverse alternating bidirectional jump point searching mechanism is adopted for searching, and the optimal path of the mobile composite robot is obtained; and optimizing the optimal path by adopting a Floyd algorithm to obtain a smooth optimized path of the mobile composite robot. By adopting the method, the working efficiency of the mobile composite robot in the intelligent chemical laboratory in high-precision tasks such as pipetting can be improved, the path planning of the robot is optimized, and the robot can quickly and safely reach the target area to assist in completing the experimental task.

The present application relates to the technical field of intelligent safety monitoring, in particular to a chemical laboratory risk early warning method and system based on a multi-modal data fusion algorithm, in the present application, the spatial gradients of multi-modal data such as gas concentration and temperature are calculated, and the coupling relationship and time delay among these gradients are analyzed, thereby realizing deep insight into the dynamic changes of the laboratory environment, no longer relying on isolated single-point threshold judgment, but evaluating stability according to the cooperative phase of heat diffusion and wet flow process, this way can effectively identify the potential unstable state caused by the combined action of multiple factors, even if each single parameter has not reached the alarm limit value, the risk can also be captured in advance, at the same time, through the aggregation analysis of adjacent unstable areas in space, the spreading trend and influence range of the risk can be revealed, thereby generating more accurate and forward-looking early warning, significantly reducing false alarms caused by non-dangerous transient fluctuations.

The utility model relates to the technical field of glass instrument safe cleaning, and discloses a chemical laboratory glass instrument safe cleaning and drying rack which comprises a drying box, clamping grooves are formed in the left side and the right side of the interior of the drying box, and connecting blocks are slidably connected to the upper end and the lower end of the interior of the drying box. Two pressing blocks are slidably connected to the front end of the interior of the connecting block, sliding blocks are slidably connected to the left side and the right side of the interior of the connecting block, connecting rods are rotatably connected to one sides of the exteriors of the sliding blocks, and pushing blocks are fixedly connected to the two sides of the exteriors of the sliding blocks. The beaker placing rack can adapt to glass instruments of different sizes, and for small beakers, the distance between the placing racks can be properly adjusted to be small, so that excessive concentration of heat is avoided, and overheating is prevented; and for a large beaker, the spacing can be increased to ensure that the beaker can be in full contact with heat flow, so that the surface is uniformly heated, the drying time is obviously shortened, and the drying efficiency is improved.

The invention provides a chemical laboratory eye cleaning device, and relates to the technical field of cleaning devices.The chemical laboratory eye cleaning device comprises a bottom box, a cleaning pool is fixed to the top of the bottom box, a backflow pipe is arranged at the right bottom of the cleaning pool and communicates with a backflow cavity of the bottom box, and a water supply pipe is arranged on the back face of the cleaning pool; the water supply pipe is located in the cleaning pool and is divided into two sections, the two sections of the water supply pipe are provided with L-shaped pipes, the top of each L-shaped pipe is provided with a cleaning assembly, the cleaning assembly comprises an eyeshade, and the eyeshade is fixedly installed at the top of the corresponding L-shaped pipe. The eyeball cleaning device can be used for people with different eye distances, two eyeball cleaning positions can be conveniently adjusted, meanwhile, upper and lower eyelids can be opened and closed in an auxiliary mode, human hands are replaced, secondary damage to eyeballs can be reduced, and when the eyeball cleaning device is not used, the flushed part is protected through the sealing assembly, and pollution is avoided.

The invention discloses an intelligent safety control system for an organic chemistry laboratory, and relates to the field of intelligent control. Wherein a laboratory data acquisition module, an experimental data acquisition module, a laboratory data management module, an experimental data analysis module, a data analysis early warning module and an intelligent safety control module are arranged; the laboratory data acquisition module acquires laboratory data information; the experimental data acquisition module acquires experimental data information; the laboratory data management module manages the laboratory data information and constructs a laboratory data graph; the experimental data analysis module obtains a corresponding experimental mapping map according to the experimental data information and the laboratory data map; the data analysis early warning module obtains experiment early warning information according to the experiment mapping map; the intelligent safety control module performs coordination processing according to the experiment early warning information to obtain corresponding laboratory coordination control information; the management efficiency of intelligent control is improved.

The embodiment of the invention provides a method, device and equipment for measuring the drift rate of a cooling tower and a medium, and relates to the technical field of measurement. The method comprises the steps that the initial mass of a water absorption vessel and the cooling water flow of the cooling tower are determined, and the water absorption vessel is located in a water tank of the cooling tower and higher than the liquid level of the water tank; when the operation duration of the cooling tower reaches the preset operation duration, the water absorption mass of the water absorption vessel is determined; measuring the splashing rate of the cooling tower according to the initial mass, the water absorption mass, the cooling water flow and the surface area of the water tank; and determining the drifting rate of the cooling tower according to the splashing rate of the cooling tower and a preset relation curve. Therefore, the method for measuring the drift rate of the cooling tower does not need to use a high-precision balance and drying equipment at a physical and chemical laboratory level, but can complete the mass measurement of the water absorption vessel by using common weighing equipment, so that the experiment cost is greatly reduced, the difficulty in actual operation is reduced, and the field measurement is more feasible.

The utility model relates to the technical field of purifiers, and discloses a chemical laboratory waste liquid purifier, which comprises a base, a purification mechanism is arranged at the front end of the upper surface of the base, the purification mechanism comprises a first storage cylinder, and a cover plate is clamped and matched on the upper surface of the first storage cylinder. A servo motor is fixedly connected to the middle of the upper surface of the cover plate, a rotating rod is fixedly connected to the output end of the servo motor, a plurality of stirring blades are fixedly connected to the outer wall of the rotating rod, and a fixing frame is clamped and matched to the lower surface of the cover plate. In the purifier, the purifying mechanism and the filtering mechanism can be conveniently detached and cleaned, a coarse filter screen and stirring blades in the first storage barrel can be cleaned and maintained by detaching a cover plate, and a limiting seat is detached and separated by detaching a positioning plate, so that a fine filter screen is cleaned and maintained; therefore, the service life of the purifier is prolonged, and the maintenance convenience of the purifier is improved.

The utility model relates to the technical field of daily chemical and medical experiments, in particular to a homogenizing emulsifying machine for a daily chemical laboratory, which is characterized in that a second scraper is arranged at the bottom of a second mounting plate, the second scraper is attached to the surface of the bottom of an inner cavity of a reaction kettle, and a first scraper is arranged on the back of a connecting plate; the first scraping plate is attached to the surface of the side wall of the inner cavity of the reaction kettle, so that materials on the surface of the reaction kettle can be effectively scraped, and the defect that stirring is performed by manually rotating the outer shaft in the prior art is overcome, so that the device has the advantages of low labor intensity, high automation degree, good product emulsification quality and low possibility of deterioration; meanwhile, the first emulsifying blade, the second emulsifying blade and the third emulsifying blade are matched for stirring, and the third emulsifying blade and the first emulsifying blade are arranged in a staggered manner, so that the emulsifying efficiency of the whole equipment is higher.

The utility model relates to the field of chemical reaction devices, in particular to a chemical laboratory safety reaction device which comprises an operation table, an operation frame, a reaction device, a connecting device, a chemical test tube, a heating frame, a sealing cap, a threaded column and an injection agent pipe. A reaction device and a chemical test tube are installed in the operating table and the operating frame, a connecting device is installed on the upper side of the reaction device, three agent injection pipes are installed on the side wall of the reaction device, sealing caps are installed at the top ends of the agent injection pipes, and a heating frame is installed in the middle of the operating table; the reaction device can be stably fixed through the fixing table and the operation frame, it is guaranteed that the reaction device cannot shake in the chemical reaction process, and the experiment safety is improved.

This invention relates to the field of laboratory gas treatment equipment technology, specifically a low-noise automated ventilation and purification device for hazardous gas chemical laboratories. The device includes a ventilation mechanism, which comprises a mounting plate. An outer cover is fixedly connected to one side of the mounting plate, and a filter cleaning mechanism is fixedly connected inside the outer cover. The filter cleaning mechanism is connected to the mounting plate through a ventilation opening, which is located on the mounting plate. A rotating mechanism is located above the filter cleaning mechanism. In this invention, the activated carbon particles at the ventilation opening lose their methane adsorption capacity after prolonged use. Therefore, when the motor starts, it drives the activated carbon particles on the lifting plate, the activated carbon particles on the rotating plate, and the filled activated carbon particles to deflect as a whole. This causes the activated carbon particles that were previously far from the ventilation opening and had a stronger methane adsorption capacity to move closer to the ventilation opening, thereby improving the methane adsorption effect and avoiding waste of activated carbon particles.

This invention provides an autonomous management and scheduling system for high-throughput chemical experimental robots based on digital twins, relating to the field of robot control technology. It includes a digital twin unit and a production execution unit. The production execution unit inputs production instructions and outputs a first production instruction signal. Based on the first and second production instruction signals, the production execution unit controls the robot to perform chemical experimental operations. The production execution unit feeds back the production result signal to the digital twin unit. This invention continuously collects overall operational and simulation data of the high-throughput chemical experiment through the digital twin unit, continuously improves the equipment twin model related to the entire experiment, and then interacts with the production execution unit. This provides data support for improving the efficiency of high-throughput chemical experiments and the output of experimental samples, and also provides a foundation for decision optimization of the entire system.

The present invention designs a method for managing the behavior of personnel in a hazardous chemical laboratory based on pedestrian re-identification. It collects video image data in the laboratory and pre-processes it. It uses a pedestrian detection algorithm to detect the position and contour information of pedestrians in the image, and extracts features of the detected pedestrians, including human contours, postures, and clothing features. It uses a pedestrian re-identification algorithm to identify and track the extracted features to obtain the identity information and motion trajectory of each pedestrian. Based on this information, the behavior of pedestrians is analyzed and managed, including behaviors such as entering and leaving the laboratory and operating hazardous chemicals. At the same time, the method monitors and warns the behavior of personnel in the laboratory in real time. Once abnormal behavior is found, an alarm will be issued in time and corresponding measures will be taken. The personnel behavior data will be stored in a database, and data analysis and reporting will be performed regularly to provide decision support to laboratory managers.

A glass drip tip for use in a chemical laboratory, the drip tip comprising a glass cylinder, wherein 1-3 thin glass tubes are provided on a side wall of the glass cylinder; the end of each thin glass tube that is located outside the glass cylinder is a liquid inlet, and the end of each thin glass tube that is located inside the glass cylinder is a drip outlet; the glass cylinder has an upper opening and a lower opening; the upper opening of the glass cylinder is provided with a sealing block, or is provided with an upper grind joint; and the lower opening of the glass cylinder is provided with a lower connecting portion. Regardless of whether a feed port of a reaction flask is straight or angled, once the glass drip tip is inserted and then rotated, the liquid inlets will never be higher than the drip outlets, such that the drip outlets drip a liquid reagent at a uniform rate without generating a siphon effect during dripping; the design of the glass drip tip with different numbers of drip tubes meets the requirements for single-way or multi-way dripping; and the glass drip tip is stackable and insertable to meet the requirements for multi-way dripping.

The utility model discloses an embedded host for a chemical analysis instrument in a laboratory, which belongs to the technical field of chemical laboratories and comprises a touch screen, a circuit board, an external interface and a power supply, the host is connected with a control unit of the chemical analysis instrument through an internet access 1 and is communicated with a laboratory server through an internet access 2, and the external interface is connected with the power supply. The host adopts a uniform 24V power supply module to supply power through a needle-shaped or hole-shaped circular connector, PIN serial number output is 1: + VO (positive power supply), 2:-VO (negative power supply), 3:-VO (negative power supply) and 4: + VO (positive power supply), a touch screen interface module is arranged on the circuit board and used for connecting a touch screen, a WIFI / Bluetooth module and a 4G / 5G module provide a wireless communication function, a serial port communication module supports an RS232 or RS485 interface, and a USB interface is arranged on the circuit board. The USB communication module 1 and the USB communication module 2 are respectively used for printing, communication expansion and program upgrading. According to the utility model, different types of chemical analysis instruments can be controlled by installing different embedded software.

The utility model discloses a solution purification device for a chemical laboratory. The solution purification device comprises a mounting plate and a base connected with the bottom of the mounting plate, the mounting plate is connected with an adding tank, the bottom of the adding tank is connected with a control valve, and the other side of the mounting plate is connected with a swinging part; according to the silver-ammonia solution preparation device, the accuracy of silver-ammonia solution preparation can be effectively improved, ammonia water and silver oxide can fully react through a continuous shaking effect, and the silver-ammonia solution preparation device has the advantages that the accuracy of silver-ammonia solution preparation is improved; therefore, silver oxide precipitates and other incompletely reacted chemical components are prevented from remaining in the prepared solution, and the effect of purifying the silver-ammonia solution by the device is achieved.

The application relates to the technical field of laboratory intelligent management, and discloses a hazardous chemical laboratory supervision emergency system, which takes a central processing unit as a core, integrates seven modules of multidimensional perception, account registration, a laboratory digital twin model library, cross verification of taking and using, behavior recognition intervention, emergency response strategies and a mobile terminal interaction assistant, constructs a complete closed-loop management system from hazardous chemical taking compliance verification, personnel operation safety monitoring to intelligent emergency response, and comprehensively improves the safety management level of a hazardous chemical laboratory. The system can realize real-time linkage of data of each module, break information islands, avoid taking violations from the source, block operation risks in real time, efficiently dispose of emergency conditions, rely on the mobile terminal interaction assistant to improve emergency efficiency, comprehensively strengthen the whole life cycle supervision capability of hazardous chemicals, significantly reduce the incidence of laboratory safety accidents, improve the efficiency of event emergency disposal, and improve the intelligentization and refinement level of overall safety management.

The invention discloses a thermal power plant chemical experiment supervision system and method, and the system comprises at least one experiment table, the experiment table is provided with an experiment groove, an experiment window, a protection mechanism and a fire extinguishing mechanism, the experiment window is communicated with the experiment groove, the protection mechanism is movably connected to the outer side surface of the experiment table, and the fire extinguishing mechanism is used for spraying a fire extinguishing material into the experiment groove; the air exchange mechanism is used for exchanging air and discharging smoke; the experiment table is connected to the exhaust pipeline through the air guide channel, and the air exchange mechanism is connected to the exhaust pipeline. The method comprises the steps of exhaust pipeline arrangement, experiment table processing, ventilation mechanism installation and supervision system operation. According to the invention, fire and smoke monitoring and alarming can be carried out on the chemical laboratory of the thermal power plant, fire and smoke occurring in the first time on the experiment table can be processed, fire expansion is avoided, guarantee is provided for subsequent rescue, and loss is reduced.

The utility model discloses a filtering device for a chemical digestion solution and belongs to the technical field of chemical laboratory equipment. The device comprises an upper cylinder, a filter membrane and a lower cylinder, and is characterized in that the whole upper cylinder is in a cylindrical tube shape, a net-shaped upper diaphragm is arranged at the bottom end of the upper cylinder, the whole lower cylinder is in a funnel shape, the upper portion of the lower cylinder is a cylindrical tube, the lower portion of the lower cylinder is closed up and provided with a flow guide tube, and a net-shaped lower diaphragm is arranged in the lower cylinder. The upper cylinder and the lower cylinder are connected in a matched mode through threads, the filter membrane is a round polytetrafluoroethylene silk screen, the mesh hole diameter of the filter membrane is 0.15 mm, and the filter membrane is located between the net-shaped upper diaphragm and the net-shaped lower diaphragm. The device disclosed by the utility model has high chemical stability and excellent chemical corrosion resistance, can resist strong acid, prevents samples from being polluted, is small in adsorbability, ensures the maximum recovery of the samples, and can quickly and effectively filter digestion liquid at the same time.

The invention is suitable for the technical field of experimental equipment management, and provides a chemical laboratory equipment full-process management method and system, and the method comprises the following steps: receiving an experimental equipment application form, and analyzing the experimental equipment application form to determine an experimental project, an applicant, an application equipment sequence and an emergency degree; an audit passing instruction is received, and the corresponding experimental equipment application form enters a queuing mode; calling all the experimental equipment application forms at intervals of set time values, and calculating the earliest available time of all the experimental equipment in the laboratory; calculating the time concentration degree of application equipment corresponding to each experimental equipment application form according to the earliest available time; and calling the queuing time length and the emergency degree of each experimental equipment application form, and carrying out experimental equipment distribution on the experimental equipment application forms based on the time concentration degree, the queuing time length and the emergency degree. According to the method, factors of time concentration, queuing duration and urgency are comprehensively considered, and quantitative balance of efficiency and fairness is realized through dynamic adjustment.

The invention discloses a chemical laboratory safety experiment management system based on big data analysis. The system comprises a data analysis platform, a data monitoring and acquisition module, an experiment safety management module, an alarm prompt module, a control module and a data storage module. The data analysis platform is responsible for cleaning, converting and filing original data; the data monitoring and acquisition module realizes data interaction through a built-in API data interface, and realizes real-time data monitoring through carrying a wireless network; the experiment safety management module is responsible for managing and controlling equipment, chemical experiment products and experimenters in the chemical laboratory; the alarm prompting module supports a multi-level alarm management mechanism; the control module is used for controlling and managing equipment in the laboratory in real time according to the alarm information sent by the alarm prompt module; and the data storage module is responsible for recording operation data among the modules. According to the method, lean management of the experiment safety of the chemical laboratory can be realized, and the safety of the experiment process is ensured.