36results about How to "Guaranteed concentration" patented technology

The invention discloses a low-altitude unmanned aerial vehicle countering monitoring system based on state feature decoding, relates to the technical field of unmanned aerial vehicle prevention and control, and is used for solving the problem of poor low-altitude target detection and countering. According to the invention, through closed-loop management and control of heterogeneous radar networking detection, signal level fusion processing, threat assessment and resource scheduling and intelligent countering decision, accurate identification and directional countering of the low-altitude unmanned aerial vehicle are realized; according to the method, the detection precision and the micro-Doppler feature extraction capability of a low-speed small target are improved by combining a virtual aperture synthesis technology, then unbalanced resource allocation is implemented based on a threat level, the system efficiency is optimized, and finally seamless migration of an interfered node task is realized by constructing a signal interference situation map. And continuous tracking and effect evaluation on the target are maintained in the active radio frequency countering process, so that the overall efficiency and reliability of low-altitude security and protection in a complex environment are effectively improved.

The utility model relates to the technical field of heat-not-burn, in particular to a heat-not-burn device and heat-not-burn equipment, a device body of the heat-not-burn device is provided with a containing cavity allowing an aerosol product to be inserted therein, and the aerosol product and the cavity wall of the containing cavity can define an air cavity at the closed end of the containing cavity; aerosol generated by heating the aerosol matrix section by the heating non-combustion device can flow to the air cavity from top to bottom and is gathered in the air cavity; the heating non-combustion device comprises an air suction channel with one end opening communicated with the air cavity and the other end opening communicated with the external space of the containing cavity, aerosol in the air cavity can be discharged along the air suction channel under the action of external suction force, and on one hand, resistance in the aerosol discharging process can be reduced; on the premise of ensuring the aerosol concentration of the first suction, the suction waiting time is shortened, on the other hand, the flow direction of water vapor generated after the aerosol product is heated is opposite to the flow direction of the aerosol, the content of water vapor discharged along with the aerosol can be reduced, and the probability that the mouth is scalded by sucking the first suction is reduced.

The utility model discloses biochar-based fertilizer synthesis equipment, which relates to the technical field of synthesis equipment, and comprises a synthesis cylinder, the top of the synthesis cylinder is provided with a circular notch, the synthesis cylinder is sleeved with a sleeve through the circular notch, the inner side of the sleeve is integrally formed with a flow guide ring, the bottom of the outer side of the synthesis cylinder is fixedly provided with a motor, and the motor is fixedly connected with the synthesis cylinder. The output end of the motor is fixedly provided with a rotating rod, the rotating rod extends to the inner side of the synthesis cylinder and is sleeved with a bearing sleeve, the bearing sleeve is sequentially provided with a first loading plate, a second loading plate and stirring blades, the bottom of the first loading plate is provided with a bottom scraping plate, and the second loading plate is provided with a side scraping plate; and a discharge hole is formed in the synthesis cylinder. A first loading plate is mounted on a bearing sleeve, and a bottom scraping plate is arranged at the bottom of the first loading plate, so that the device continuously turns over the fertilizer at the bottom of the synthesis barrel in the synthesis process, the fertilizer is stirred more uniformly, and the use effect of the fertilizer is improved.

The application relates to the technical field of data center microbial prevention and treatment, and discloses a liquid supplementing device which comprises a box body, a sterilization module, a dosing module and a device pipeline system, the sterilization module is arranged on the inner wall of the box body and is used for sterilizing the working medium in the box body; one end of the device pipeline system is in communication with the box body, and the other end is in communication with a device; water supplementing pumps and one-way valves are arranged on the two sides of the dosing module, and the water supplementing pumps and the one-way valves are arranged on the device pipeline system. The application has the effects of preventing and treating the liquid supplementing device, and improving the reliability of data center operation.

The application belongs to the technical field of attention monitoring, and discloses an attention monitoring method, device, equipment and storage medium. The method comprises the following steps: when the use time length of a user is greater than a preset time length, collecting a face video of the user in a preset time period through a head-mounted device, and obtaining a face image in the face video; determining an eye position in the face image, and extracting eye information in the face image according to the eye position; determining eye opening and closing information of the user in the preset time period according to the eye information, and determining gaze information of the user in the preset time period; determining an attention monitoring result of the user based on the eye opening and closing information and the gaze information, and taking an intervention measure according to the attention monitoring result. In the above manner, an intervention measure can be taken in time when it is monitored that the user has attention dispersion.

The utility model discloses an integrated tank body structure of a tire bead steel wire copper plating auxiliary tank. The integrated tank body structure comprises an auxiliary tank I, an auxiliary tank II, an auxiliary tank III, a partition plate, a high-position overflow pipe, a discharge pipe, a stirrer, a communicating pipe, a metering pump, a circulating pump and a liquid level pipe, partition plates are connected into the first auxiliary groove and the second auxiliary groove, stirrers are connected to top plates, on the two sides of the partition plates, of the first auxiliary groove and the second auxiliary groove, the first auxiliary groove is connected to the top face of the second auxiliary groove, the second auxiliary groove is connected to the top face of the third auxiliary groove, and the bottoms of the side faces of the first auxiliary groove, the second auxiliary groove and the third auxiliary groove are all connected with discharge pipes and high-position overflow pipes; the bottom of the side face of the third auxiliary tank is further connected with a liquid level pipe, the high-position overflow pipe is connected with a discharge pipe, and the second auxiliary tank and the third auxiliary tank are connected through a metering pump and a circulating pump. Compared with the prior art, the copper plating auxiliary tanks are integrally connected to form a new tank body structure by using the connecting pipes connected with the ball valves and the metering pumps, so that the occupied area of the tank body is reduced, the stability of the concentration of a solution is ensured, and the dripping accuracy of the solution is improved.

The utility model discloses a flow guide body assembly structure, and belongs to the field of oxygen generators. The flow guide body assembly structure comprises a base plate, a mounting groove is formed in the base plate, the flow guide body assembly structure further comprises a connecting block arranged in the mounting groove, and a first air port and a second air port are formed in the connecting block; the first connecting pipe and the second connecting pipe are arranged on the connecting block; the first communicating groove and the second communicating groove are both formed in the bottom of the connecting block, the two ends of the first communicating groove communicate with the first air port and the first connecting pipe correspondingly, and the two ends of the second communicating groove communicate with the second air port and the second connecting pipe correspondingly; grooves corresponding to the first communicating groove and the second communicating groove are formed in the mounting groove; according to the utility model, the installation and the disassembly are more convenient, the downtime is reduced, the working efficiency is improved, the fixation through a rubber tube or silica gel is not needed after the installation, and the problem of gas leakage is avoided.

The application relates to a silver spraying system and a silver spraying process. The silver spraying system comprises a high-speed spraying tank, a spraying power supply, a mother tank and an automatic silver ion supplementing system. The automatic silver ion supplementing system comprises a silver preparation tank, a silver preparation power supply and a control host. The control host is used for detecting the current of the spraying power supply through a signal line and controlling the silver preparation power supply to output a silver preparation current with the same size as the spraying power supply. When silver ions in the electroplating solution in the high-speed spraying tank are consumed and the silver ion concentration decreases, silver ions generated through the silver preparation tank are supplemented into the high-speed spraying tank, so that the silver ions are automatically supplemented, the concentration of the silver ions in the high-speed spraying tank is maintained, the silver plating effect of the workpiece to be plated is improved, and the convenience of supplementing silver ions in the electroplating solution is improved. The mother tank can play a buffering role to reduce the influence of the increased electroplating solution on the concentration of the electroplating solution remaining in the high-speed spraying tank, so as to ensure the spraying effect of the workpiece to be plated.

This invention discloses a pretreatment method for detecting arsenic-containing samples, comprising the following steps: S1. Drying the sludge sample, grinding and sieving it to obtain a pretreated sample; S2. Wetting the pretreated sample with deionized water, adding a digestion solution for digestion at normal pressure, and then using a hydrogen peroxide aqueous solution in boiling water for peroxidation reaction to obtain the sample to be tested; the digestion solution consists of concentrated hydrochloric acid, dilute perchloric acid, and dilute nitric acid; the sample to be tested is directly used for atomic spectroscopy to detect the arsenic content. The light source for atomic analysis spectroscopy is an inductively coupled high-frequency plasma torch. The method is simple, saves materials, has a low detection limit, and high repeatability.

This invention relates to the field of coal mine safety production and occupational health protection technology, and discloses a dust monitoring and automatic dust suppression control system for coal mining environments, including a PM sensor, a central control unit, a dust suppressant spraying facility, a feedback optimization mechanism, and an electrical control system. The PM sensor is a high-sensitivity laser scattering sensor with automatic dust removal and temperature compensation functions, deployed at preset intervals to achieve real-time monitoring of dust concentration at multiple points. The central control unit, based on IoT and mechatronics technology, integrates data from multiple heterogeneous sensors such as dust concentration, temperature, and humidity to construct a dynamic spraying decision model with lithology identification capabilities, introducing a working condition correction coefficient α (α=k₁・S+k₂・R) to dynamically set a 4α mg / m³ trigger threshold. The dust suppressant spraying facility sprays environmentally friendly dust suppressant to form a fine mist that captures dust. The feedback optimization mechanism adjusts the spraying interval based on the concentration decay data after spraying. The electrical control system ensures safe operation through relay and contactor isolation design. This invention solves the problems of low efficiency, poor adaptability, water waste and easy equipment damage in traditional dust suppression methods, and achieves precise, efficient and safe dust control in coal mines, ensuring the health of workers and production compliance.

The utility model relates to a kind of food processors, including: cabinet, its inside is equipped with the cooking chamber for cooking food, the upper portion of the cooking chamber is equipped with exhaust hole;Negative pressure pump, is located in the cooking chamber outside, and with the exhaust hole communication, for the gas in the cooking chamber is extracted to make cooking chamber inside to be negative pressure state;For preparing food fresh-keeping gas gas generating device;Inside with the air cavity for storing food fresh-keeping gas's gas storage device, air cavity gas inlet with the output end of the gas generating device is communicated, air cavity gas outlet is communicated to the cooking chamber by gas pipeline, and gas pipeline is equipped with for controlling gas flow's flow control valve, when flow control valve opens, the gas storage device is arranged, and food fresh-keeping gas in it can be inhaled into cooking chamber under the action of cooking chamber inside negative pressure.The utility model can reduce the risk of food material being oxidized.

The application belongs to the field of grinding wheel grinding, and provides a portable retractable grinding wheel ultrasonic electrolytic machining device and method, which comprises a driving shaft and a variable amplitude rod arranged coaxially, one end of the variable amplitude rod is movably abutted against a workpiece to be machined, and the other end is movably inserted into the driving shaft to form a gas pressure flow channel and an electrolyte flow channel which are not connected with each other in the driving shaft; a plurality of ultrasonic vibration devices are arranged on the outer wall of the variable amplitude rod in sequence along the axial direction of the variable amplitude rod, and the plurality of ultrasonic vibration devices are movably abutted against each other and used for generating high-frequency ultrasonic vibration. Compared with the prior art, the application has the advantages that the gas pressure is used to drive the outer diameter of the retractable grinding wheel to be away from the precision selection of a suitable retractable grinding wheel, and different machining requirements are adapted; meanwhile, the ultrasonic vibration and electrolytic machining operation are combined, the cutting force in the machining process is effectively reduced, the deformation and surface damage of the workpiece are reduced, the vibration energy is uniformly transmitted to the grinding wheel and the workpiece, and the machining precision and efficiency are ensured.

This utility model relates to the technical field of furniture processing, and in particular to a board soaking device for furniture processing. By setting up this device, it can ensure that each board can be evenly contacted with the solution, and can guarantee the concentration of the soaking solution, thereby improving the soaking effect. It includes a soaking tank, a wire mesh frame, multiple sets of wire mesh partitions, multiple sets of adjusting blocks, multiple sets of bolts, a lifting device, a pressing device, and a stirring device. The bottom of the soaking tank is provided with four sets of support legs. The multiple sets of wire mesh partitions are movable within the wire mesh frame. The front end of the wire mesh frame is provided with an elongated hole. The multiple sets of adjusting blocks are respectively installed at the front end of the multiple sets of wire mesh partitions and slide within the elongated hole of the wire mesh frame. The top and bottom of the multiple sets of adjusting blocks are provided with threaded holes. The multiple sets of bolts are threadedly connected to the threaded holes of the multiple sets of adjusting blocks and are engaged with the wire mesh frame. The lifting device is installed at the rear end of the soaking tank and is connected to the wire mesh frame. The stirring device is installed in the lower part of the soaking tank.

The present application relates to a method for preventing sticky sludge from expanding and blocking a denitrification system, characterized in that a plate-and-frame tank is arranged between a secondary sedimentation tank and a filter tank to intercept sticky sludge in an expanded state; the plate-and-frame filler adhering to the sticky expanded sludge is collected for air flushing and chemical micro-stimulation, growth factors generated by promoting the expansion of the sticky sludge are returned to a biochemical tank, the hydraulic retention time of the biochemical tank is shortened, the expansion of the sticky sludge is promoted, and then physical separation of the sticky sludge is performed, so that the treatment cycle of the sticky sludge expansion is reduced, and a simple, energy-saving, economical and easy-to-control water treatment process is provided for relieving the sticky sludge expansion.

The utility model relates to the technical field of water and fertilizer integrated equipment, in particular to water and fertilizer integrated low-cost precise fertilization equipment which comprises a base, the mixing box is fixedly arranged at the upper part of the base; the fertilizing assembly comprises two supporting plates and a two-way threaded rod, the two supporting plates are arranged on the upper portion of the base, the two-way threaded rod is rotationally arranged on two supporting plate supports, a pair of sliding blocks are movably arranged on the two sides of the two-way threaded rod, and spray heads are arranged on the lower portions of the sliding blocks; the device solves the problem that traditional fertilization equipment cannot accurately irrigate determinant crops.

The invention provides a sodium ion exchange resin regeneration wastewater treatment device, which comprises a precipitation tank, an adsorption tank and a regeneration tank, the adsorption tank is provided with a first pipe leading to the precipitation tank, the precipitation tank is provided with a second pipe leading to the regeneration tank, the regeneration tank is provided with a fourth pipe leading to the adsorption tank, and the adsorption tank is provided with a second pipe leading to the regeneration tank. The adsorption tank is filled with adsorption resin, the regeneration tank is internally provided with a plurality of reverse osmosis membranes, concentrated water generated by filtration is pumped into the adsorption tank through a fourth pipe, one side of the precipitation tank is provided with a reagent supply device, the reagent supply device is fixedly connected with a third pipe, and the third pipe is connected with the precipitation tank. And the reagent supply device is filled with a flocculating agent and sodium hydroxide. According to the invention, hard water softening can be realized, and precipitation and reverse osmosis treatment can be integrally carried out.

This invention discloses an intelligent programmed engineered probiotic system and its preparation method. The system uses probiotic strains as the engineered substrate bacteria, and is constructed by integrating the coding genes for superoxide dismutase (SOD), antimicrobial peptides (AMP), and a synchronized cleavage circuit (SLC) with the probiotic strains through genetic engineering technology. This invention also discloses a pH-responsive genetically engineered bacterial microsphere containing the aforementioned intelligent programmed engineered probiotic system, which is encapsulated in a carrier formed by the cross-linking reaction of sodium alginate and calcium chloride ions. The intelligent programmed engineered probiotic system and the accompanying pH-responsive genetically engineered bacterial microspheres constructed in this invention, through the synergistic design of the dual-function therapeutic modules SOD and AMP, and the programmed cleavage circuit SLC, simultaneously address the three core problems of IBD: oxidative stress, dysbiosis, and intestinal barrier damage.

The present application relates to the field of battery thermal safety performance test, specifically to a kind of energy storage device thermal safety performance test test device, including test box, controller, temperature detector and voltmeter, the controller, temperature detector and voltmeter are sequentially installed from top to bottom in test box front left side, and controller is electrically connected with temperature detector, heater electrically connected with controller is installed in the left and right inner walls of test box, controller controls the start-stop of heater, let heater heat test box, temperature measuring mechanism is installed in the top of test box inner chamber, and fire extinguishing mechanism is installed around the top of test box inner chamber.Effectively solve the technical pain points that existing test device cannot detect battery bulging, test dimension is single, fill the blank of structure failure early warning in battery thermal safety test, provide more comprehensive, rigorous data support for battery thermal safety performance evaluation, and then provide accurate direction for structure optimization and performance improvement of battery.

The utility model discloses a multi -head electromagnetic range with heat dissipation subassembly, including bottom shell and heating panel, bottom shell is fixedly connected with heating panel through screw, be provided with heating assembly and the heat dissipation structure of heat dissipation to heating assembly between bottom shell and heating panel, install the controller of electric connection with heating assembly and heat dissipation structure in bottom shell, the cable of controller extends to bottom shell outside through bottom shell, the utility model interval structure divides bottom shell inner chamber into four independent chambers, and each chamber corresponds a heating assembly, cooperation second air deflector guides the accurate flow of airflow to the heating area that is working, avoids cold wind and disperses in non -working area, ensures that the heat dissipation resources concentrated effect is applied to the component that needs to radiate heat, through the baffle plugging non -working chamber corresponding vent, need not to send air to all chambers simultaneously, make the cold wind of fan suction only through the air intake of working chamber and enter, reduce the invalid work of fan.

The utility model discloses landscaping pesticide spraying equipment which comprises an equipment vehicle, a vehicle frame fixedly installed on the equipment vehicle, an electric control box body fixedly installed on the top of the vehicle frame, a mixing tank fixedly installed on the top of the vehicle frame and located on one side of the electric control box body, and a sprayer installed on one side of the mixing tank. A conveying pump used for conveying pesticide is fixedly installed at the position, between the mixing tank and the sprayer, of the top of the vehicle frame. According to the utility model, the hollow stirring rod drives the rolling roller to rotate, and the rolling convex blocks are used for rolling and crushing pesticide solids precipitated in the mixing tank, so that pesticide precipitation in the mixing tank is reduced, the overall concentration of pesticide liquid in the mixing tank is ensured, and the drug property of the pesticide liquid sprayed to a landscaping landscape to act on the pesticide liquid is ensured.

The application discloses an intelligent closestool and a descaling method thereof, and comprises the following steps: S1, starting descaling; S2, switching a reversing valve downstream of an instant heater to a state of opening a cleaning port communicated with a water spraying body; S3, starting a liquid pump connected with a switching valve upstream of the instant heater, and the liquid pump stays for T1 time in the state of opening the cleaning port of the reversing valve, so as to pump descaling liquid in a liquid storage tank communicated with the liquid pump to the water spraying body and discharge the descaling liquid from a water outlet of the water spraying body; S4, switching the reversing valve to a state of opening a descaling port communicated with the liquid storage tank, and the liquid pump is in an open state for T2 time, so that the descaling liquid circulates in a loop formed by the liquid storage tank, the liquid pump, the switching valve, the instant heater and the reversing valve for T2 time. By arranging steps S2 and S3, the descaling liquid in the liquid storage tank can be used to replace residual cleaning water in a passage between the switching valve and the water spraying body, so that dilution of the descaling liquid by the residual cleaning water in the water passage is avoided, and the descaling effect is effectively improved.

This utility model discloses a laser cutting device with a dust adsorption device for use in the field of cutting equipment. Through the follow-up adjustment of the stretchable shield, the dust suction ring holes in the core area directly above the cutting point are fully exposed, the adsorption channel is unobstructed and the suction is stronger, while the dust suction ring holes in the outer area far from the cutting point are still partially covered and the suction is weaker, forming an adsorption gradient with strong center and weak periphery. It can adapt to multi-station processing, which can not only efficiently capture the dust generated by cutting, but also avoid the energy waste caused by ineffective adsorption on the periphery, and achieve a balance between dust collection effect and energy consumption. When the transparent curtain of the dust suction component is lowered, it forms a closed space around the processing area, which can effectively prevent the dust from spreading into the workshop and ensure that the dust is concentrated within the coverage area of ​​the dust suction ring holes. The valve adjustment component can divide the dust suction ring holes of the dust suction follow-up top plate into independent areas according to the work station, which can effectively adapt to multi-station scenarios with multiple laser heads cutting simultaneously.

The utility model relates to bird's nest processing technical field, and disclose a kind of quantitative packaging production equipment of bird's nest product processing, including conveying table, the top two sides of conveying table are fixedly connected with supporting leg, the front of conveying table is fixedly installed with controller, the top of conveying table is provided with packing box, the back of conveying table is provided with stirring anti-sediment component, the top of conveying table is provided with capacity quantitative adjusting assembly.The utility model can be stirred to the ingredients in the material storage cylinder by setting stirring anti-sediment component, the cap is taken out from liquid inlet pipe one, ingredients enter from liquid inlet pipe one, the ingredients in the material storage cylinder can be stirred by starting motor to drive rotating rod and mixing plate through controller, to prevent ingredients from depositing, affecting concentration, starting pump, connecting pipe can extract and fill the ingredients in the material storage cylinder, prevent ingredients from sinking, ensure the concentration of each batch of bird's nest, to reach the effect of stirring anti-sediment.

The application discloses a kind of citric acid-microbial inoculant coproduction process methods.The process method described in the application is as follows: (1) citric acid fermentation liquor is subjected to plate and frame filtration treatment, and mycelium and citric acid feed liquid are separated, the citric acid feed liquid is neutralized, and calcium citrate and raffinate are obtained after filtration, calcium citrate enters subsequent extraction process, and citric acid is prepared; and raffinate enters evaporator for concentration, and concentrated liquid and condensate are obtained; (2) the condensate is used as citric acid production raw material mixing water, and the concentrated liquid is used for culturing microorganisms after pretreatment, and microbial inoculant is obtained; (3) then the microbial inoculant is centrifuged, and concentrated microbial inoculant and tail liquid are obtained, the concentrated microbial inoculant is added with protective agent and carrier, and microbial inoculant is obtained by spray drying.The method described in the application uses citric acid production raffinate as microbial culture nutrient source, realizes high-value and resource utilization of nutrient substances in raffinate, significantly reduces water consumption, and reduces sewage discharge.

The invention relates to the technical field of mixed drinking tea beverages, and provides Wuniu early mixed drinking tea and a preparation method thereof. The preparation method comprises the following steps: carrying out pretreatment and deoxidation treatment on drinking water to obtain low-dissolved-oxygen softened water; wuniuzao black tea original leaves are subjected to fractional extraction with low-dissolved-oxygen softened water, and a tea base is obtained; preparing pretreated waxberry juice and early-fragrant pomelo juice; blending a tea base, the pretreated waxberry juice, early-fragrant pomelo juice, a sweetening agent, old wine sweat and low-dissolved-oxygen softened water to obtain mixed tea juice; and performing homogenization treatment and sterilization treatment on the mixed tea juice, and performing filling and sealing to obtain the Wuniu early-blending drinking tea. According to the preparation method disclosed by the invention, the problem of insufficient stability is solved on the premise of no preservatives, antioxidants and stabilizers through combination of various means such as water demineralization and deoxidation, segmented tea extraction, advanced deoxidation and anti-browning treatment of fruit juice, inert gas oxygen-controlled mixing and the like, and the color and flavor stability of the product in the shelf life storage process is improved.

The utility model relates to the technical field of rice breeding and germination accelerating, in particular to rice breeding and germination accelerating integrated equipment which comprises a rice breeding and germination accelerating box, a germination accelerating agent spraying assembly and a rice breeding agent spraying part are connected in the rice breeding and germination accelerating box in a sliding mode, and the germination accelerating agent spraying assembly and the rice breeding agent spraying part are attached to each other. According to the equipment, the servo motor drives the threaded rotating rod to drive the germination accelerating agent spraying assembly to move left and right in the rice breeding germination accelerating box, so that accurate pesticide application is realized. When the assembly moves to the leftmost side, a piston rod is pressed, so that pesticide liquid or pesticide mist in a pesticide spraying box is uniformly sprayed to the surfaces of rice seeds through a connector, a connecting hose and spraying holes of a first supporting plate, and it is ensured that the pesticide covers the bottom of the whole germination accelerating box. The medicine liquid can flow into the water receiving plate through the water filtering screen plate to be recycled, and the medicine mist is slowly discharged, so that the proper medicine concentration in the box is maintained. By means of the design, the problem that traditional manual spraying is not uniform is solved, and the germination accelerating efficiency and the seed treatment quality are improved.

The utility model relates to a wind scooper which comprises a fan cover and a wind shield, one end of the fan cover is connected with one end of the wind shield, and the wind shield extends in the direction far away from the other end of the fan cover in the axial direction of the fan cover. By arranging the fan cover installed at the rear end of the motor and the wind shield installed above the motor body, a complete air channel from the rear end to the front end of the motor can be formed, and it is guaranteed that after air is blown out by the cooling fan at the rear end of the motor, air flow can be guided to the positions of a front bearing and an end cover of the motor; the problem that an existing fan cover cannot guide air in the area is solved, and effective heat dissipation of the front bearing and the end cover of the motor is achieved. Meanwhile, when the motor is used, the wind shield covers the upper end of the motor body and can be used for shielding falling objects such as dust and flying catkins, heat dissipation is prevented from being hindered due to the fact that the dust and the flying catkins form a heat insulation layer on cooling fins of the motor, and the heat dissipation efficiency is further improved due to the arrangement of the wind shield.

The utility model relates to the field of sulfuric acid production, especially relates to a battery sulfuric acid production line, including diluter, carry out secondary mixing with desalted water after mixing concentrated sulfuric acid and battery sulfuric acid once, and output, cooler, its pipe course entrance connects the outlet of diluter, its pipe course export connects battery sulfuric acid storage tank with battery sulfuric acid inlet of diluter, its shell course is connected with cooling water. The utility model solves the problem that the graphite diluter is used in the existing battery sulfuric acid production process, and the graphite and sealing material are corroded by sulfuric acid and enter the sulfuric acid due to the nature and structure of the diluter, which affects the quality of the acid. At the same time, the traditional battery sulfuric acid production process adopts manual operation, which is complicated and not conducive to saving manpower and reducing labor cost.

This utility model provides a dual-sided electric breast pump, comprising a milk collection assembly, a main unit, and a control assembly. The main unit includes a housing, an air pump assembly, and an electronically controlled valve assembly. The electronically controlled valve assembly includes a first electronically controlled valve and a second electronically controlled valve. The air inlet of the first electronically controlled valve is connected to a first air tube assembly, and the air inlet of the second electronically controlled valve is connected to a second air tube assembly. The air outlet of the first electronically controlled valve is connected to a first suction port, and the air outlet of the second electronically controlled valve is connected to a second suction port. Both the first and second electronically controlled valves have an open state where their respective air inlets and outlets are connected, and a closed state where their respective air inlets and outlets are isolated. The control assembly controls the first and second electronically controlled valves to alternately be in the open state, so that the pump assembly effectively concentrates the suction force on one side of the breast through alternating milk expression via the first and second air tube assemblies, achieving sufficient suction and better milk expression results.

This invention discloses a method and system for optimizing a spectral library based on sensitivity analysis, belonging to the field of semiconductor optical measurement. The optimization method includes: acquiring simulated spectra; performing sensitivity analysis on preset library construction parameters based on the simulated spectra to obtain the sensitivity of each parameter; obtaining the value range of each parameter and, based on the sensitivity and value range, obtaining the partitioning weight of each parameter; calculating the number of grid divisions for each parameter based on its partitioning weight; obtaining grid points according to the number of grid divisions, with each grid point corresponding to a set of geometric parameters, thus obtaining a parameter mesh; and simulating the geometric parameters corresponding to each grid point in the parameter mesh using the Fourier modal method to generate an optimized spectral library. The spectral library obtained by this optimization method has a balanced sample distribution and small bias, improving the accuracy and stability of the neural network model.