62results about How to "Reduce dispersion" patented technology

The invention discloses solidified soil prepared from solid waste and a preparation method of the solidified soil, and relates to the technical field of constructional engineering materials. According to the solidified soil prepared from the solid waste, the self-made anti-dispersing agent and the composite curing agent are added, the self-made anti-dispersing agent is prepared by introducing graphene oxide to the surface of pretreated aramid fiber and then generating nano silicon dioxide on the surface in situ, the self-made anti-dispersing agent enters solidified soil components, dispersion is reduced, and therefore the strength of the solidified soil is kept; the composite curing agent comprises modified glass fiber reinforced plastic, sulphoaluminate cement, Portland cement and gypsum powder, the modified glass fiber reinforced plastic is prepared by carboxylating glass fiber reinforced plastic and then coating the carboxylated glass fiber reinforced plastic with a sulfydryl cross-linked polymer, and the modified glass fiber reinforced plastic enters the structure of the cured soil, so that shrinkage deformation is prevented, and the curing strength is enhanced.

The invention provides a baking lamp for surgical nursing, and relates to the technical field of nursing instruments. The baking lamp for surgical nursing comprises a base, a connecting column is arranged at the position, close to the rear side edge, of the center of the upper end face of the base, the upper end of the connecting column is movably connected with a first supporting rod through a first connecting piece, and the upper end of the first supporting rod is movably connected with an adjusting structure through a second connecting piece; the other end of the adjusting structure is connected with a lighting structure, the lighting structure comprises a lampshade, a bulb is arranged in the lampshade, a storage groove is formed in the center of the lower end face of the lampshade, a folding sleeve is fixedly connected to the interior of the storage groove, and a protective ring is fixedly connected to the lower end of the folding sleeve. By arranging the lighting structure, when a light source is scattered and the whole support is inconvenient to adjust during use, the folding sleeve connected with the protective ring is pulled out downwards to form a fence, scattering of the light source is reduced, pertinence is higher, and adjuvant therapy is better facilitated.

The present application provides a method for producing molded coke by utilizing coke powder as a resource, comprising the following steps: 1) mixing coke powder with water to obtain wet coke powder. 2) mixing wet coke powder with a binder to obtain a mixing and stirring step of a batch material. 3) transferring the batch material to a buffer bin, and outputting the batch material quantitatively to a briquette machine through the buffer bin. 4) pressurizing the batch material through a briquette machine to obtain a cold pressing step of wet molded coke. 5) drying the wet molded coke through a dryer to obtain a drying step of molded coke. The drying step comprises: desulfurizing and denitrifying the flue gas of the coke oven to obtain flue gas to be dried, passing the flue gas to be dried into a dryer, drying the wet molded coke to obtain dried flue gas and molded coke, and removing dust from the dried flue gas and discharging it. The present application realizes the production of molded coke by utilizing coke powder as a resource, and improves the mechanical strength of the molded coke.

The invention relates to the technical field of insulated cables, in particular to a multifunctional overhead insulated cable, which comprises a plurality of groups of wire core conductors, a filling base layer arranged on the surfaces of the plurality of groups of wire core conductors, an insulating assembly, a heat conduction assembly and a protection assembly, through the insulation assembly, accumulation of heat in the cable is reduced, the heat can be rapidly absorbed through the heat absorption layer, meanwhile, the heat absorbed by the heat absorption layer can be further conducted outwards through the heat conduction assembly, the heat dissipation effect on the internal insulation layer and the wire core conductor is improved, and through the arranged protection assembly, when the cable is subjected to external pressure or impact, the protection effect is improved. The heat conduction assembly and the insulation assembly arranged inside are buffered and protected, the risks of aging and cracking of the insulation layer caused by expansion and stress concentration due to high temperature are effectively relieved, heat can be rapidly dispersed, the heat dissipation capability of the cable is improved, the electrical performance and safety are ensured, and the service life of the cable and related accessories is prolonged.

The invention provides a photocatalytic barrier composite film for fresh keeping of fruits and vegetables and a preparation method thereof, and the preparation method comprises the following steps: sequentially adopting 1, 3-propane sultone and octadecyl trimethyl ammonium chloride to carry out modification treatment on nanocellulose to obtain quaternary ammonium sulfonated nanocellulose; the preparation method comprises the following steps: carrying out organic intercalation modification treatment on montmorillonite by adopting hexadecyl trimethyl ammonium bromide and caprolactam, and carrying out hydrophobic modification treatment on intercalated montmorillonite by adopting a silane coupling agent to obtain composite modified montmorillonite; the titanium precursor solution and the zinc precursor solution are sequentially dripped into the montmorillonite dispersion liquid, then aging, centrifuging, washing, drying and calcining are conducted, and load modified montmorillonite is obtained; uniformly mixing polylactic acid, quaternary ammonium sulfonated nano cellulose, the loaded modified montmorillonite, a plasticizer, a lubricant and an antioxidant to obtain a mixed material, and sequentially performing melt extrusion, cooling, pelletizing and film blowing on the mixed material to obtain the photocatalytic barrier composite film.

The invention provides a preparation method of specific molecular weight hyaluronic acid with concentrated molecular weight distribution, and relates to the technical field of polysaccharide preparation. The method comprises the following steps: inoculating a streptococcus zooepidemicus seed solution into a fermentation culture medium, and culturing for 6-8 hours under the conditions that the temperature is 35-39 DEG C and the dissolved oxygen is 15-50%; adding hyaluronidase to enable the enzyme activity concentration to be 1500-4000 U / L, and culturing for 6-10 hours at the temperature of 37-40 DEG C; the fermentation culture medium comprises the following components in parts by mass: 30-50 parts of glucose, 10-15 parts of a yeast extract, 10-15 parts of casein peptone, 5-10 parts of yeast peptone, 1-3 parts of magnesium sulfate and 0.2-0.8 part of sodium glutamate. By regulating and controlling the HAase addition amount, the addition time, the fermentation temperature and the fermentation time, a specific low-molecular-weight hyaluronic acid product can be obtained, and the dispersion degree of the molecular weight of the hyaluronic acid is remarkably reduced.

The invention discloses an intelligent automobile fault diagnosis and maintenance all-in-one machine and a using method thereof, and belongs to the technical field of automobile maintenance devices.The intelligent automobile fault diagnosis and maintenance all-in-one machine comprises a tire elevator, a workbench, a frame, an air loop and a waste liquid tray. The tire lifter consists of a pair of tire lifter arms and a frame connected with the rear ends of the tire lifter arms and is used for lifting tires; the workbench is provided with a supporting column, a tray and an air conditioner. The frame comprises foot parts, connecting parts and the like, and the foot parts are provided with trundles, stoppers and the like; the air loop supplies compressed air; the waste liquid tray collects waste liquid. According to the trolley, multiple functions are integrated, the tire elevator and the stop dog are driven through an air loop, and an operator can operate the trolley conveniently. The trolley is convenient to move, stable in fixation, capable of effectively improving maintenance efficiency, reducing maintenance difficulty and preventing waste liquid pollution and suitable for the field of automobile maintenance.

This utility model discloses a magnetic drive motor and an air supply device, including a motor body, an inner rotor, an outer rotor, and a magnetic adjustment ring. The motor body includes a housing and a motor shaft, with the motor shaft extending out of the housing. The inner and outer rotors are coaxially arranged. The inner rotor is provided with at least one first magnetic element, and the outer rotor is provided with at least one second magnetic element. One of the inner and outer rotors is fixed relative to the motor shaft. When the motor shaft rotates, the other of the inner and outer rotors can rotate together through the force between the first and second magnetic elements. The magnetic adjustment ring includes a mounting bracket and multiple magnetic plates. The mounting bracket is made of non-magnetic material and includes a fixing part and a mounting part. The fixing part is connected to the housing, and the mounting part is located between the inner and outer rotors and surrounds the inner rotor. The multiple magnetic plates are mounted on the mounting part and arranged at intervals along the circumference of the mounting part. This application can improve the stability of the magnetic drive motor operation.

The utility model is suitable for the technical field of food transportation, and provides a raspberry transfer box which comprises a box body, placing grooves are evenly distributed on the periphery of the inner wall of the box body, an installation groove is horizontally formed in the position, close to the top, of the box body, and the raspberry transfer box further comprises a cover plate, the bulge assemblies are arranged in the box body at equal intervals and are fixedly connected with the bottom of the box body; the binding assemblies are arranged at the bottom of the box body in a transversely and vertically staggered mode. According to the raspberry transferring box, the protruding assembly can limit raspberries in the transferring process in the mode that the protruding assembly is matched with the containing groove and the cover plate, collision and extrusion of the raspberries in the transferring process are reduced, the integrity of raspberry fruits is ensured, the binding assembly binds ice bags, the raspberries are rapidly pre-cooled, and the raspberry transferring efficiency is improved. Risks of water loss and fungus growth of raspberries are reduced, and the refreshing time and the loading and transporting time of raspberry fruits are prolonged.

The utility model discloses a feeding device for continuous feeding, dust prevention and efficiency improvement. The utility model relates to the technical field of mechanical equipment. The feeding device comprises a blending kettle, an air draft system and a feeding bin; a feeding hopper is arranged on the blending kettle, a vibrating device is arranged on the feeding hopper, the feeding bin is arranged on the feeding hopper in a covering manner, an air draft opening of the air draft system is communicated with the feeding bin, and a feeding bin window is arranged on the side surface of the feeding bin. According to the utility model, the feeding bin is covered on the feeding hopper, and the vibration device is arranged at the bottom of the feeding hopper, so that an operator puts weighed materials into the hopper opening through the operation opening, and starts the vibration device to vibrate the materials adhered in the feeding hopper into the blending kettle; in the feeding process, dust in the feeding bin is sucked into the dust recovery system through the air draft system, material dust dispersion in the feeding process is reduced, and the continuous feeding efficiency is improved.

This invention discloses a precise legal consultation method and system based on multi-agent orchestration. The method includes: employing a hybrid intent classification mechanism with three levels of linkage—LLM remote reasoning, local heuristic correction, and keyword fallback—to route user requests to different paths, driving differentiated processing flows; performing dual-path retrieval of vector retrieval and knowledge graph relationship expansion in deep analysis to generate a structured analysis report; introducing a multi-dimensional context compression algorithm to reduce token overhead and illusion risk; embedding a three-stage emotional reassurance mechanism throughout the entire response process; and using a rendering type protocol to achieve front-end / back-end decoupling and unified rendering across multiple platforms, decomposing the processing into continuous dynamic feedback through a staged streaming response mechanism. This invention achieves intelligent, precise, and emotionally engaging legal consultation processes through multi-agent orchestration, significantly reducing model reasoning costs and improving the handling capacity for complex cases and user interaction experience.

The present invention discloses a method and device for regenerating waste activated carbon powder, and relates to the technical field of activated carbon powder regeneration. The present invention comprises a base, a primary granulation component is arranged on the top of the base, a secondary granulation component is arranged on the right side of the primary granulation component, a drying component is arranged on the right side of the secondary granulation component, a connecting pipe is arranged on the top of the drying component and the top of the granulation component, a screening component is arranged on the right side of the drying component, a conveying component is arranged on the top of the screening component, and a mixing component is arranged on the bottom of the left end of the conveying component. The present invention further enhances the bonding effect between the material and the binder by means of the guiding effect of the guide rod, and at the same time, the limit ring prompts the elastic scraper to always be close to the inner wall of the mixing component, preventing the activated carbon powder from adhering to the inner wall of the mixing component due to its own high humidity, and avoiding the material from being difficult to adhere to the composite binder due to adhesion, thereby avoiding the material remaining inside the mixing component to cause resource loss.

The invention provides a risk prediction system and method for severe postpartum hemorrhage, and the method comprises the steps: firstly carrying out the principal component analysis of all postpartum hemorrhage risk data, and obtaining the principal component characteristics of a severe postpartum hemorrhage risk; clustering all the postpartum hemorrhage risk data according to a mapping relation of different postpartum hemorrhage risk data to obtain a plurality of clusters, thereby determining a data constraint condition of each cluster; further performing feature extraction on all the prenatal examination data to obtain a data feature map, thereby determining a confidence boundary of each cluster; secondly, carrying out secondary clustering on all the clustering clusters to obtain a plurality of secondary clustering clusters; and determining a risk prediction model of serious postpartum hemorrhage according to all the secondary clusters, and evaluating the risk value of serious hemorrhage of the puerpera through the risk prediction model. By adopting the scheme of the application, the influence of data imbalance on postpartum hemorrhage risk data clustering can be reduced, so that the accuracy of severe postpartum hemorrhage risk prediction is improved.

The present invention relates to a method for characterising batteries, comprising: obtaining simplified characterisation parameters (RAC,RDC_30) of a battery pack to be characterised to estimate the capacity of the battery and its internal resistance; and applying said simplified characterisation parameters (RAC,RDC_30) to predetermined models that calculate the capacity and internal resistance based on approximations and predetermined model parameters. To determine the model parameters, detailed characterisation parameters (C, RDC_i,RAC) are obtained from a previous battery pack, to adjust model parameters. A statistical analysis comparing simplified characterisation parameters (RAC,RDC_30) with the detailed characterisation parameters (C, RDC_i,RAC) allows determining if the batteries to be characterised can be characterised through previous battery models or if they should be subjected to a detailed characterisation.

This utility model discloses a plate heat exchanger with a reinforcement device, comprising: a heat exchange core formed by stacking multiple heat exchange plates sequentially, a reinforcement device disposed on the outside of the heat exchange core, the reinforcement device comprising oppositely arranged reinforcement components, each set of reinforcement components comprising a transverse reinforcement member and a longitudinal reinforcement member, the transverse reinforcement member being disposed along the width direction of the heat exchange core and abutting against the edge of the heat exchange plate, the longitudinal reinforcement member being disposed along the height direction of the heat exchange core and having both ends connected to the transverse reinforcement member, the transverse reinforcement member and the longitudinal reinforcement member forming a reinforcement frame to apply radial constraint force to the heat exchange core. By the transverse reinforcement member and the longitudinal reinforcement member of the reinforcement device enclosing and forming a reinforcement frame, the radial constraint force applied to the heat exchange core can effectively resist the impact of fluid pressure fluctuations on the heat exchange core, reduce the overall shaking or dispersion of the core formed by stacking multiple heat exchange plates due to uneven force, and significantly improve the overall structural stability of the heat exchange core.

The intelligent environmental sanitation vehicle comprises a vehicle body, a sweeping mechanism is arranged in front of the bottom of the vehicle body, the sweeping mechanism comprises two sweeping discs arranged in a bilateral symmetry mode, a suction nozzle assembly is arranged at the bottom of the vehicle body and arranged on the rear sides of the sweeping discs, and a camera and a laser radar are arranged in front of the top of the vehicle body. A vehicle end controller is arranged in the vehicle body, the camera and the laser radar are in communication connection with the vehicle end controller, the sweeping mechanism, the suction nozzle assembly and the automatic welt driving system are arranged, and the sweeping effect under different road surface conditions is optimized through adaptive adjustment and intelligent control of the sweeping mechanism; the garbage disposal efficiency is improved through the intelligent recognition and automatic adjustment functions of the suction nozzle assembly, the sweeping precision is ensured through the automatic welt driving technology, the working intensity of a driver is relieved, and the operation safety is remarkably improved.

A sunshade device, vehicle, and operating method are disclosed, belonging to the field of sunshade technology. The device includes a curtain fabric, a pivot assembly, and a locking assembly. The locking assembly includes a connecting bracket. Limiting buckles are fixedly connected to both ends of the connecting bracket and slidably positioned within corresponding guide rails. The limiting buckles are elastic elements. A handle is connected to the lower surface of the center position of the connecting bracket. A locking portion is fixedly provided on the lower surface of the limiting buckles, located on the side of the connecting bracket near the pivot assembly. When the curtain fabric needs to be rolled up, the operator pulls the handle diagonally downwards to cause the rear sides of the limiting buckles with locking portions at both ends of the connecting bracket to tilt upwards, thus separating the locking portions from the corresponding limiting grooves. This is the same hand action as with traditional manual sunshades, without adding any extra movements. It not only enables quick unlocking but also avoids excessive distraction, ensuring driving safety.

The utility model relates to a technical field of rubbing crusher, and disclose a raw material rubbing crusher for peanut butter production, including rubbing cylinder, the inside middle part of rubbing cylinder is provided with the pivot, the outside of pivot is fixedly sleeved with two groups of cutting knives at the inner bottom part near rubbing cylinder, the outside of pivot is slidably sleeved with the pressing plate, the outer ring of pressing plate is installed with the sealing ring, the sealing ring and the inner wall of rubbing cylinder are inlaid, the lower extreme of pressing plate is fixedly installed with the wall scraping cylinder at the outside near place, the outer wall of wall scraping cylinder and the inner wall of rubbing cylinder are inlaid, the lower extreme middle part of rubbing cylinder is connected and fixedly installed with the grinding cylinder, the lower extreme of pivot is fixedly installed with the grinding block, the upper end surface of grinding block and the inner bottom surface of rubbing cylinder are flush, and there is certain gap between the outer ring wall of grinding block and the inner wall of grinding cylinder. The device can improve the peanut rubbing efficiency, guarantee the grinding delicacy, effectively clean the peanut butter remaining in the inner wall.

This invention provides a textured robot structure, including a frame, a drive system mounted on the frame for horizontal movement, a textured base mounted on the side end face of the frame, a steel brush mounted on the textured base, a textured drive component mounted between the textured base and the steel brush for rotating the steel brush, and a dust collection box mounted on the textured base to the right of the steel brush, a dust collection opening at the lower end of the dust collection box, a dust collection hood mounted on the textured base, a high-pressure fan mounted on the dust collection hood, a connecting pipe between the high-pressure fan and the dust collection box, a lifting mechanism between the dust collection box and the textured base for raising or lowering the dust collection box, and a fixing mechanism between the lifting mechanism and the textured base for fixing or releasing the position of the dust collection box after it has been raised or lowered.

The invention discloses a method for preparing a low-load ruthenium-based catalyst for a biogas dry-wet dual-process hydrogen-adapted mixed gas. The method uses different soft template agents to assist and optimize the active metal loading, so that the Ru particles are small, highly dispersible, and evenly dispersed, and a low-load, efficient, and stable ruthenium-based catalyst is obtained, which avoids the problem that the catalyst is easy to agglomerate at high temperatures and the catalytic performance is limited; at the same time, by reducing the noble metal loading, the catalyst cost is reduced and the resource utilization rate is improved. The catalyst Ru / MgO-ST prepared by the method has a conversion rate of up to 90% in catalyzing the dry-wet dual-process conversion of biogas to synthesis gas methane, and the hydrogen-carbon ratio (H2 / CO) of the converted gas is about 2, which can well catalyze the dry-wet dual-processing of biogas to hydrogen / alcohol mixed gas, which makes it a promising candidate material for the preparation of green hydrogen / biomethanol, and its process is simple, low cost, and easy to promote industrial production.

The application discloses a layered scheduling optimization method and platform for multi-resource dynamic balancing of engineering projects, and belongs to the technical field of engineering project scheduling optimization. The method comprises the following steps: an engineering project data model containing an activity directed acyclic graph, multi-type resource requirements and milestone constraints is established; a resource coupling coefficient is calculated, and a feasible time window in the form of a multi-section closed interval union is generated for each activity; a resource pool quota is allocated among projects according to a resource urgency index at a strategic layer; adaptive rolling rescheduling is started according to four types of trigger conditions at an operation layer; and a cross-layer bidirectional closed loop is formed through step-by-step feedback. The platform comprises the following modules: a multi-source data acquisition module, a biological meteorological window management module, a resource demand prediction module, a three-layer scheduling engine module and the like. The application can simultaneously realize single-resource balancing and cross-resource collaboration, so that the scheduling result has biological meteorological sensitivity, and can quickly respond when a disturbance arrives, thereby relieving on-site work, improving resource pool utilization and reducing the deviation of the construction period.

The application provides a cockpit implementation method and system based on emotion enhancement and scenario service flow intelligent agent, and belongs to the technical field of automobile intelligent cockpits. The method comprises the following steps: acquiring multi-modal data of a target user in real time, fusing the multi-modal data to generate comprehensive user states, planning a service flow based on scenario semantics and the user states, and generating and outputting action execution instructions of internal and external resources according to the service flow. Through multi-modal deep fusion and scenario semantic understanding, the application can accurately capture user states and demands, provide the most suitable service at the most appropriate time, and change passive response into active care. The application sets a user memory vector library to continuously learn and adapt to user preferences, provides a truly 'thousand faces for a thousand people' service, and as the use time increases, the service accuracy and user satisfaction present a continuously rising curve, thereby solving the problem of static experience of traditional systems.

The present invention provides a drawing annotation analysis method, system and storage medium, which relates to the technical field of drawing processing, including: receiving drawings to be analyzed, identifying and segmenting annotation units, and obtaining annotation units; performing standard analysis on annotation units, obtaining annotation standard coefficients, and dividing manual and automatic annotation units; obtaining annotation space, optimizing annotation positions, and obtaining optimal manual and automatic annotation positions; displaying optimal manual annotation positions, receiving manual annotation information, automatically annotating to generate automatic annotation information, and obtaining analysis results. The present invention solves the technical problem that manual annotations are mixed with other annotations due to unreasonable distribution of annotation positions, and automatic annotations cannot fully consider the positions and influences of manual annotations, resulting in uneven overall annotation layout, and achieves the technical effect of optimizing the annotation position layout, improving the uniformity of annotations and the conspicuousness of manual annotations, and ensuring the accuracy of annotation efficiency and annotation results.

The invention discloses an efficient treatment system and method for mine water suspended solids, and belongs to the technical field of water treatment. The system comprises an outer cylinder and a water inlet pipeline, wherein an inner cylinder is arranged in the outer cylinder; the outlet end of the water inlet pipeline penetrates through the outer cylinder and is arranged in the inner cylinder; a pipeline flocculation reactor is arranged on the water inlet pipeline and is used for adding a coagulant to react with inlet water during working; the outer cylinder is connected with an activated carbon adding system and a centrifugal device; a separation and clarification device is arranged at the upper part of the outer cylinder, and the centrifugal device is arranged below the separation and clarification device; and a water outlet device is arranged on the outer cylinder above the separating and clarifying device. Through modular design, such as a pipeline flocculation reactor, an activated carbon adding system, a centrifugal device and a separating and clarifying device, the system can be flexibly adjusted and optimized according to the characteristics and treatment requirements of different mine water, so that the adaptability and flexibility of the system are improved, and the stability and reliability of the treatment effect are ensured.

The present invention provides a frequency conversion cabinet with a multi-layer support mechanism, comprising a cabinet, a cabinet door arranged on the cabinet, and an inner cabinet arranged inside the cabinet; a first support mechanism arranged on the top of the cabinet for protecting the cabinet, the first support mechanism comprising an upper support plate and an inclined plate, an anti-bending component arranged between the upper support plate and the inclined plate, for improving the side compressive strength of the inclined plate; a connecting mechanism, comprising a first side support plate and a second side support plate, the front end surfaces of the first side support plate and the second side support plate are both provided with a support component for supporting the inclined plate, further improving the side compressive strength of the inclined plate. The present invention can ensure that the top and sides of the frequency conversion cabinet can be protected in a harsh environment to avoid internal or external damage, and can effectively achieve the effect of anti-impact support for the cabinet.

The application discloses a kind of based on multi-dimensional data fusion's campus intelligent consumption analysis system and method, it is related to electric digital data processing technical field.The system includes terminal feature fusion, abnormality identification analysis processing, classification verification and synchronous three big modules.Terminal feature fusion module fuses terminal feature data and time feature data in original multidimensional data, generates behavior correlation feature, reduces data dispersion;Abnormality identification analysis processing module carries out abnormality identification and processing to behavior correlation feature, forms feature data set and verifies validity, improves detection accuracy;Classification verification and synchronous module uploads the classification result after verification as core data set to specified service platform, and synchronizes to its database, improves platform processing efficiency.Through multi-module cooperation, the efficient fusion of campus consumption data, accurate anomaly detection and data synchronization are realized, and the comprehensiveness of campus consumption analysis and service platform processing efficiency are improved.

The application relates to the technical field of data processing, and discloses a multi-source heterogeneous data edge processing method and device for field monitoring and a medium, which comprises the following steps: based on a data access link, parallelly receiving original data generated by different monitoring devices in a field monitoring site; extracting multi-dimensional features to determine the data source types corresponding to the original data; calling corresponding analysis engines according to the data source types to generate analysis results through differential analysis; determining the time field priority according to the data source types, selecting target time fields from the analysis results, performing unified event time axis mapping, and generating standardized data; writing the standardized data into a classified cache queue, determining the time effectiveness level according to the time difference between the standard event time and the current time, and performing hierarchical sending scheduling based on the time effectiveness level and the network state. The edge access capability of multi-source heterogeneous data in the field ecological monitoring scene, the cross-source time correlation capability and the key data sending capability under the weak network condition are improved.

The invention discloses a preparation method of a polyaluminum chloride flocculating agent, and relates to the technical field of water purifying agents. Comprising the following steps: 1, adding attapulgite into a sodium sulfide solution, and carrying out hydrothermal reaction to obtain modified attapulgite; compounding the modified attapulgite, sodium alginate and sodium metaaluminate to obtain a stabilizer; 2, sequentially adding aluminum hydroxide, hydrochloric acid and purified water into the enamel reaction kettle, and carrying out primary reaction; discharging the reacted solution into an adjusting kettle, adding calcium aluminate powder and a stabilizer, carrying out secondary reaction, and carrying out filter pressing to obtain PACV liquid; 3, cationic starch is added into the PACV liquid, heating and stirring are conducted, spray drying is conducted, and the polyaluminum chloride flocculant is obtained. According to the scheme, a compound stabilizer containing modified attapulgite and sodium alginate is introduced, so that the salinity of the polyaluminum chloride is effectively improved, and the flocculation performance of the polyaluminum chloride is enhanced; and cationic starch is further introduced as a coagulation aid subsequently, so that the bridging performance is promoted, and the water purification effect is enhanced.

The invention relates to an education cloud office desktop system, and aims to provide a convenient, flexible and highly customizable education resource access solution. The system supports a plurality of login modes, comprises a mobile device and a Web browser, has the functions of identity authentication, authority control, resource searching and self-adaption, and aims to improve the efficiency and resource utilization of the education industry.

The invention relates to the technical field of sphere grinding, in particular to a spherical industrial product grinding device for industrial product design and a using method thereof.The spherical industrial product grinding device comprises a grinding device shell, an internal mounting groove is formed in the inner side surface of the grinding device shell, and a grinding model is slidably connected to the inner side surface of the grinding device shell; a position adjusting mechanism is arranged on the surface of the inner side of the inner mounting groove, an expansion grinding mechanism is arranged on the surface of the inner side of the grinding device shell, a spraying rotating mechanism is arranged on the surface of the top of the grinding device shell, and an output buffering mechanism is arranged on the surface of the outer side of the grinding device shell. When spherical industrial products with different sphere diameters are polished, the polishing belt can be always located in the middle of the spherical industrial products, inconsistent stress of the upper portion and the lower portion of the polishing belt is prevented, energy dispersion is reduced, the possibility that the polishing belt falls off in the polishing process is reduced, and the spherical industrial products are driven to rotate through impact of water flow; meanwhile, overheating is prevented, and chippings are taken away.