24results about How to "Achieve retention" patented technology

The invention relates to a high-stability electrode for electrochemical lithium extraction and a preparation method thereof, belongs to the technical field of lithium resource extraction, and is used for solving at least one of the problems of poor cycling stability, low current density, low current efficiency and the like of an electrode prepared by an existing method. According to the electrode, the surface of the active material is coated with the solid electrolyte, the coating layer can effectively avoid direct contact between brine and the active material, side reaction is prevented, and therefore the cycle stability of the electrode is improved. The solid electrolyte layer has the effect of transmitting lithium ions, so that foreign ions can be intercepted, and the selectivity of the electrode to the lithium ions is improved. The active material is also coated with an organic conductive polymer, the electronic conductivity of the active material can be effectively improved by the organic conductive polymer layer, the charge transfer impedance of the active material is reduced, and high-current-density lithium extraction is realized.

The utility model belongs to the technical field of sample soil impurity removal equipment, and particularly relates to a sample soil impurity removal device for soil detection, which comprises an operation box, a function box is fixedly mounted on the left side of the operation box, a motor is fixedly mounted on the inner wall of the left side of the function box, a filtering mechanism is arranged in the operation box, and the same partition plate is fixedly mounted on the inner walls of the two sides of the operation box; a carding mechanism is arranged below the partition plate. And a first rotating shaft is rotationally installed on the inner wall of the top of the operation box, the bottom end of the first rotating shaft penetrates through the partition plate, clamping bases are fixedly installed on the inner walls of the two sides of the operation box correspondingly, clamping grooves are formed in the adjacent sides of the two clamping bases correspondingly, and limiting mechanisms are arranged in the clamping grooves. The device is reasonable in design, by arranging the limiting mechanism, the filter basket can be conveniently disassembled, then the purpose of conveniently replacing or cleaning the filter screen can be achieved, and by arranging the carding mechanism, the purpose of conveniently screening sample soil can be achieved.

The invention discloses a reactor chamber water injection cooling system and method.The outer wall face of a reactor pressure vessel is provided with an outer-layer heat preservation vessel, a sealed chamber is formed between the reactor pressure vessel and the outer-layer heat preservation vessel, and the reactor chamber water injection cooling system comprises two rows of circulation loops; each of the two columns of circulation loops comprises a high-position cooling water tank, a water injection valve group and a first water collecting device, an outlet of the first water collecting device is communicated with an inlet of the high-position cooling water tank, and a water source outside the containment is communicated with the high-position cooling water tank; a bottom outlet of the high-level cooling water tank is communicated with an inlet of a cavity between the reactor pressure vessel and the outer-layer heat preservation vessel, and an outlet of the cavity between the reactor pressure vessel and the outer-layer heat preservation vessel is communicated with a sprayer in the high-level cooling water tank; and the outlet of the second water collecting device is communicated with the inlet of the reactor cabin through the water tank in the containment vessel. The system and the method can meet the long-term cooling in a design basis exceeding accident.

The invention discloses a soil replacement medium and a preparation method and application thereof, and belongs to the technical field of municipal engineering, the soil replacement medium provided by the invention comprises an upper planting layer, a middle replacement medium layer, a lower replacement medium layer and a bottom gravel layer from top to bottom; wherein the upper planting layer comprises vermiculite and soil; the middle replacement medium layer comprises sawdust and iron ore from top to bottom; the lower replacement medium layer is river sand; the upper planting layer guarantees the growth environment of plants; the sawdust in the middle-layer filling medium is used for providing a carbon source, the iron ore and phosphate are subjected to complex reaction and generate chemical bonds, the lower-layer filling medium is used for improving the infiltration capacity, and the bottom gravel layer is used for regulating and storing and avoiding blockage, so that pollutant interception and rainwater infiltration are realized. According to the invention, vermiculite is matched with other modifying agents for use, so that the interception effect on pollutants is effectively improved.

The application discloses a kind of stealthy photographing behavior detection method, device, electronic equipment and storage medium, the present application first collects the pedestrian image in target area, then, through machine recognition technology, to identify the arm posture of each pedestrian in pedestrian image, and determine the stealthy photographing suspect object according to arm posture;Then, again through the hand-held object type of identifying the stealthy photographing suspect object, and the dress type of pedestrian in its corresponding stealthy photographing image area, to finally determine whether the stealthy photographing suspect object exists stealthy photographing behavior;Finally, after determining that there is stealthy photographing behavior, then the interception of stealthy photographing image can be carried out, and sent to monitoring terminal, to realize the retention of evidence and secondary detection of stealthy photographing behavior;Therefore, the present application uses machine recognition technology to realize stealthy photographing behavior detection, compared with artificial patrol, efficiency is higher, detection accuracy is higher, effectiveness is stronger, can produce greater deterrent to lawbreaker, can fully guarantee the privacy security of passenger.

This invention discloses a highly corrosion- and weather-resistant silicate glass material and its preparation method, comprising the following components by weight: 60-80 parts of a main network component, which forms a silicon-oxygen network framework after melting; 5-15 parts of a network-modifying component, which is distributed within the silicon-oxygen network framework; 5-12 parts of a lattice-stabilizing component; 2-8 parts of a compacting reinforcing component; and 3-10 parts of a lattice-strengthening component, which are dispersed within the silicon-oxygen network framework to form a dense silicate glass matrix. This invention can improve the weathering resistance, groundwater erosion resistance, and long-term structural stability of the glass material, and enhance the internal purity and density of the glass matrix, meeting the needs of deep underground burial and long-term information preservation applications.

The invention discloses a GO composite membrane for high-selectivity separation of a low-molecular-weight cationic dye as well as a preparation method and application of the GO composite membrane. The composite membrane is constructed by coating a polymer ultrafiltration base membrane with polydopamine and alternately depositing composite graphene oxide and partially reduced graphene oxide. Wherein the composite graphene oxide is prepared by crosslinking crown ether amine and partially reduced graphene oxide. A cavity structure in the crown ether amine molecule can generate electrostatic interaction with the cationic dye, so that the selective interception of the composite membrane on the cationic dye is improved. The performance of the composite membrane can be optimized by controlling parameters such as a crown ether amine structure, the reduction degree of the graphene oxide, the loading proportion of the composite graphene oxide and the graphene oxide, and efficient separation of dyes with different molecular weights and charge types is realized. The GO composite membrane has high selectivity on low-molecular-weight cationic dyes, and is suitable for industrial printing and dyeing wastewater treatment, efficient dye separation and recovery and environmental pollution treatment.

This utility model provides an automated mineral sample dispensing and retention system, relating to the technical field of mineral sample dispensing and retention processes. It includes a conveying unit for conveying original sample boxes and wide-mouth sample bags respectively; a weighing unit for weighing the dispensed and retained samples; a placement unit for placing the dispensed and retained samples; and a moving unit for picking up the original sample boxes and wide-mouth sample bags from the conveying unit and sequentially moving them to the weighing and placement units. This system boasts a high degree of automation, enabling automated dispensing of mineral samples by number, retention of remaining samples, and traceability of remaining sample quality. It ensures the accuracy of mineral sample dispensing and retention information, and allows for fully automated batch processing, benefiting the occupational health and safety of workers, improving work efficiency and quality. It effectively overcomes the technical shortcomings of existing technologies that require manual operation at each stage, have low automation levels, and suffer from significant human error in sample management.

The invention discloses a sewage filtration treatment method, which belongs to the field of sewage treatment, and comprises a pretreatment stage, a composite membrane filtration stage, an advanced oxidation-adsorption coupling filtration stage, a deep purification stage and a resource recovery stage, and is characterized in that suspended particulate matters and part of organic matters are removed by adjusting the pH value of sewage and adding a modified diatomite adsorbent; carrying out pressure filtration through a three-stage composite membrane assembly to obtain a primary filtrate; then, a ferrous ion-sodium persulfate-ozone-ultraviolet synergistic oxidation process is adopted, coupling filtration is achieved in combination with a double-layer modified activated carbon filter layer, and then deep purification is completed through ion exchange and ultraviolet disinfection. According to the sewage filtering treatment method, adsorption, filtering and advanced oxidation technologies are efficiently coupled, the treatment effect and the resource utilization rate are considered, operation is easy and convenient, running is stable, the content of COD, suspended particulate matter and ionic pollutants in sewage can be effectively reduced, and the sewage filtering treatment method is suitable for various industrial and domestic sewage treatment scenes.

A multi-barrier coupled treatment process for organic complexed heavy metals in wastewater from battery cathode material production is disclosed, relating to the field of wastewater treatment. The method involves: 1. Adjusting the pH of the wastewater to 3.0-4.5; 2. Adding iron salt and peracetic acid to an oxidation reaction tank; 3. Achieving primary removal of heavy metals through neutralization and precipitation after oxidation; 4. Adjusting the pH of the wastewater back to 6.0-6.5; 5. Passing the wastewater sequentially through a primary adsorption unit and a secondary adsorption unit. This invention utilizes the low bond energy characteristics of PAA and the synergistic oxidation advantages of multiple free radicals to solve the bottleneck problems of incomplete complex breaking, large sludge production, and narrow pH application range in traditional methods. After treatment by this invention, the total nickel concentration in the effluent is less than 0.05 mg / L, and the total cobalt concentration is less than 0.02 mg / L, consistently exceeding the limits of the "Emission Standard of Pollutants for Battery Industry" (GB 30484-2013), demonstrating broad industrial application prospects.

The filter stick comprises three parts, namely a front-section filter stick close to the cigarette end, a middle-section filter stick in the middle and a rear-section filter stick close to the smoking end. The middle-section filter stick comprises a filter stick body, the filter stick body sequentially comprises a first cylinder, a second cylinder, a third cylinder and a fourth cylinder from inside to outside, and the end faces of the two ends of the first cylinder, the second cylinder, the third cylinder and the fourth cylinder sequentially form a step shape, that is, the diameter of the second cylinder is larger than that of the first cylinder; the diameter of the third cylinder is larger than that of the second cylinder, the diameter of the fourth cylinder is larger than that of the third cylinder, and a circle of cavity is formed in the circumferential direction of the fourth cylinder; and the cavity penetrates through the fourth cylinder along the axial direction of the fourth cylinder.

The present application relates to the technical field of steviol production, and particularly relates to a steviol wastewater treatment method, which comprises the following steps: collecting, adjusting and treating wastewater, hydrolyzing, blowing off, one-time settling, water distribution, anaerobic reaction, activated sludge pool and two-time settling, so that the organic matters in the wastewater are effectively decomposed, and the wastewater treatment efficiency is improved.

The utility model discloses a kind of vacuum feeding machines of powder material conveying equipment technical field, to solve the waste problem of existing technology in vacuum feeding machine to black tea powder transport. It includes transfer tank, the inlet pipe and vacuum pipe are respectively communicated and set on the transfer tank, the discharge outlet of the inlet pipe and the air inlet of vacuum pipe are all set on transfer tank, the height of the discharge outlet of the inlet pipe is lower than the position of the air inlet of vacuum pipe, the inside of the transfer tank is provided with support and filter layer laid on support, the filter layer can completely shield the air inlet of vacuum pipe, cleaning device is also provided on the transfer tank, and the cleaning device is used to clean the surface of filter layer;The utility model is used for vacuum feeding machine to black tea powder is transported, can effectively isolate black tea powder into rear-end vacuum pipeline, can avoid the influence of negative pressure system being blocked while avoiding waste black tea powder material.

The efficient cooling and dedusting water curtain air cooler comprises a framework, an axial flow fan, a water curtain wall structure, a water circulation structure and a filter screen, the water curtain wall structure is embedded in partial wall parts of two opposite side walls of the framework, a circulating water system is arranged in the framework, and the circulating water system supplies water to the water curtain wall structure; the water curtain wall structure comprises a water curtain wall arranged on the framework, a temporary storage part opposite to the water curtain wall and an extrusion assembly attached to the temporary storage part, the temporary storage part retains liquid drops taken away by airflow from the water curtain wall, and the extrusion assembly comprises a rotating rod, a sponge roller with the outer wall wound with first sponge and a movable extrusion roller arranged below the sponge roller. According to the water curtain wall humidifying and cooling device, the buffer part absorbs and retains water in air passing through the water curtain wall, energy consumption is reduced, and the humidifying and cooling functions are improved. And a first sponge, a sponge roller and an extrusion roller of the extrusion assembly are matched, so that water on the buffer part and the first sponge is extruded and recycled by the extrusion roller.

The present invention discloses a purification material for pre-treatment of cathinone and its degradation products in plant samples, and its preparation method and application. The purification material is GCB / Fe-NH2, which is prepared by bonding graphitized carbon black GCB and amino groups with nano-iron tetroxide as a magnetic carrier. The purification material has both adsorption and ion exchange functions, and the purification material and the extract can be directly magnetically separated without centrifugation or filtration, and the operation is simple. It can be used in the pre-treatment of cathinone and metabolites of norpseudoephedrine and norephedrine detection in plant samples, and has a good purification effect on different types of plant samples.

The utility model discloses a hermetia illucens material processing device which comprises a material tank and a separation box, the separation box is welded to the left side of the outer portion of the material tank, a flowing groove is formed in the upper portion of the left side of the material tank, and a transmission cavity is formed between the two ends of the upper portion of the right side in the material tank. And chain wheels are movably connected to the front portion and the rear portion of the interior of the transmission cavity, and a chain ring is transversely connected between the exteriors of the chain wheels in a sleeving mode. According to the hermetia illucens material processing device, a push plate is connected between the exteriors of lead screws in a sleeving mode, cleaning liquid is poured, after a mixing rod controlled by a motor receives a command, materials in a tank are rapidly stirred, the materials are cleaned and precipitated for a period of time, waste materials and sundries float on the water surface, and the materials are mixed through the motor and then discharged out of the tank. The chain wheel connected with the chain ring is controlled to push the lead screw to rotate, then the push plate with the threaded hole is forced to horizontally move left and right, scum is pushed into the separation box from the flowing groove, and the problem that hermetia illucens is not completely cleaned is solved.

The utility model relates to a positive pressure needleless connector which comprises a connector shell, one end of the connector shell is provided with a first connector, and the other end of the connector shell is provided with a second connector. A medicine adding rubber plug is arranged in the connector shell, and the medicine adding rubber plug is made of an elastic material; the medicine adding rubber plug comprises a telescopic end, a telescopic connecting part, a telescopic main body and a joint connecting part; the telescopic main body is of a hollow structure, a plurality of annular grooves are formed in the hollow structure of the telescopic main body in the telescopic direction of the telescopic main body, an elastic telescopic structure is formed among the annular grooves, and when an infusion instrument is disconnected, the elastic telescopic structure rebounds to form positive pressure pulses, so that liquid medicine retention of the positive pressure needleless connector is reduced; the inner wall of the end, close to the second connector, of the connector shell is in a funnel shape, and when an infusion instrument is disconnected, the funnel-shaped structure accelerates the flowing speed of liquid medicine through positive pressure pulses formed by the elastic telescopic structure, retention of the liquid medicine is reduced, and therefore accurate-dose infusion to a patient is achieved.

The utility model provides a corrector for deciduous tooth period or tooth replacement period, which comprises a left base plate, a right base plate and a hyperbolic labial arch, two ends of the hyperbolic labial arch are respectively connected with the left base plate and the right base plate, and the left base plate and the right base plate are connected through an arch expander; long arrow clamps are arranged on the left base plate and the right base plate; when the long arrowhead is clamped on the two breast molars, the adjacent hook is positioned between the two breast molars; when the long arrow clamp is located on the first permanent molar and the second deciduous molar, the number of the adjacent hooks is two, one adjacent hook is located between the first permanent molar and the second deciduous molar, and the other adjacent hook is located between the deciduous cuspid and the first deciduous molar; and the left base plate and the right base plate are respectively provided with a rear tooth area jaw pad corresponding to the position of the rear tooth area of the upper jaw. According to the utility model, the wearing stability is strong, and the side effects of molar cheek inclination, tongue tip sagging and occlusal height increase caused by arch expansion can be reduced to a certain extent.

The invention belongs to the technical field of industrial salt preparation, and discloses a preparation method of special industrial salt for chlor-alkali production by an ionic membrane method. Comprising the following steps: extracting brine; performing centrifugal pretreatment on the brine, and collecting clear liquid; filtering the pretreated and filtered clear liquid through an ultrafiltration membrane, and collecting the clear liquid of the ultrafiltration membrane; filtering clear liquid filtered by the ultrafiltration membrane by using a composite nanofiltration membrane, and collecting nanofiltration membrane clear liquid; and evaporating the nanofiltration clear liquid and drying salt in the sun to obtain the special industrial salt for chlor-alkali production by the ionic membrane method. According to the preparation method of the industrial salt special for chlor-alkali production through the ionic membrane method, no chemical medicine needs to be added into the brine, the production cost is low, and the production steps are simple and environmentally friendly.

The invention discloses a low-cadmium rice cultivation method giving consideration to grain safety production and soil cadmium extraction and remediation and application, and belongs to the technical field of genetic engineering. According to the method, specific expression of OsHMA3 in rice stems and leaves is driven by utilizing transgenic and genetic transformation technologies, so that the content of cadmium in rice is remarkably reduced. The key function of the OsHMA3 in regulation and control of cadmium accumulation of the overground part of the rice is proved for the first time, cadmium is directionally intercepted in stem and leaf tissues by inducing specific expression of the OsHMA3 in rice stems and leaves, transfer of the cadmium to grains is blocked, enrichment of cadmium in non-edible parts is promoted on the premise that absorption of soil cadmium by root systems and absorption of atmospheric sedimentation cadmium by leaf surfaces are not inhibited, and the cadmium accumulation of the overground part of the rice is promoted. The method not only ensures safe production of grains, but also realizes a mode of'simultaneous production and restoration 'for extracting cadmium from soil through straw removal, and solves the problem of how to effectively deal with atmospheric sedimentation cadmium pollution and simultaneously extract and restore cadmium from soil while reducing the cadmium content of rice.

The utility model discloses a quick-plug shielding connector with a multi-sealing structure, which comprises a shell, a connector is connected to one side of the shell, a triangular shielding ring is arranged in one side, far away from the connector, of the shell, a cylindrical shielding ring is arranged on one side, far away from the connector, of the outer part of the shell, the connector extends into the inner side of the shell, and the triangular shielding ring is connected with the triangular shielding ring. A fixing block is connected between the connector and the shell, a hose sealing ring is fixed on the inner side of the connector, a cable can firstly stretch into the connector, the cable and the hose sealing ring in the connector are in full contact to achieve retention and sealing, and the head of the cable has enough length. The connector can be conveniently installed on the shell, and a shielding layer on the cable can be fully contacted with the triangular shielding ring to realize a shielding effect.

This invention discloses a cascaded detection method for dynamic allocation of computing power in video surveillance based on prior knowledge, specifically including the following steps: S1, data acquisition and generation of domain of interest; S2, dynamic allocation of computing power; S3, cascaded detection; S4, alarm evidence collection and feedback. This invention relates to the field of intelligent video analysis and resource scheduling technology. This cascaded detection method for dynamic allocation of computing power in video surveillance based on prior knowledge generates domains of interest based on task text and divides camera channels into active / dormant states accordingly. This reduces the inference frequency in non-interested periods and areas, thereby reducing ineffective computing power usage. Through two-level cascaded inference of "full-image human body localization + fine recognition within the ROI," it can reduce interference from complex backgrounds in wide-angle scenes and improve the accuracy of identifying the violation attributes of small targets. Through the export of evidence fragments from a circular cache and the return of manual confirmation, alarm evidence retention can be achieved.

The utility model relates to the technical field of building construction, and discloses a tool for sealing a tubular pile core cage and the inner wall of a tubular pile, which comprises a supporting plate, a bottom support is arranged on the supporting plate, the size of the bottom support is larger than that of the supporting plate, and the peripheral side edge of the bottom support extends out from the outer edge of the supporting plate; in addition, the strength of the bottom support is smaller than that of the supporting plate, and the part, extending out of the outer edge of the supporting plate, of the bottom support can deform upwards to form a structure surrounding the supporting plate. According to the utility model, the gap between the supporting plate and the tubular pile can be blocked while the pile core cage can be smoothly put into the tubular pile, so that concrete can be effectively intercepted, waste caused by leakage of the concrete and the condition that the bottom of a pile core is not compact are avoided, the construction quality is ensured, the structure is simple, and the use is convenient.

The present invention relates to a storage and treatment equipment, method, device and system for overflow pollution. The equipment comprises: a water inlet unit, a plurality of first electrically controlled valves, a storage tank provided with a plurality of parallel storage and treatment units, a plurality of liquid level gauges, a plurality of second electrically controlled valves, a first drainage structure, a second drainage structure and an intelligent controller. Through the parallel storage and treatment units, sequential batch water inlet, physical and chemical treatment and quality-based drainage are carried out, so that the storage and treatment equipment can intercept and purify pollutants to the maximum extent, make full use of the effective volume of the storage tank, increase the amount of treated water, and reduce the pollution load of overflow into the river / lake.