84results about How to "Effective coverage" patented technology

The embodiment of the invention discloses a control method and device of automatic cleaning equipment and related equipment, the automatic cleaning equipment comprises an equipment body and a mechanical arm arranged on the equipment body, the equipment body is provided with a first sensor, and the mechanical arm is provided with a second sensor. The mechanical arm is controlled to extend out of the equipment body, the automatic cleaning equipment is controlled to move in the working environment, and visual information is collected through a first sensor and a second sensor in the moving process; in response to the high-altitude area identified according to the visual information collected by the second sensor, the automatic cleaning equipment is controlled to move to the position below the high-altitude area; the mechanical arm is controlled to enter a high-position scanning posture, and visual information of a high-altitude area is collected through a second sensor; and the visual information collected by the first sensor and the second sensor in the mapping mode is fused to establish a map of the working environment, so that the navigation capability and the obstacle avoidance capability of the automatic cleaning equipment are improved.

The invention provides a game anti-addiction face age evaluation method and device, and relates to the technical field of artificial intelligence, and the method comprises the steps: in response to a verification request of a game application, collecting a face image of a user through an image collection device of terminal equipment; inputting the face image into a lightweight age evaluation model deployed in the terminal device for reasoning, executing living body detection and age evaluation, and determining a living body detection result and age evaluation data; wherein the lightweight age evaluation model is constructed based on a lightweight convolutional neural network, and an age sensitive feature attention module is configured in the model and is used for dynamically improving an endowed weight for an age-related feature region in the face image; the living body detection process and the age evaluation process are carried out cooperatively; and generating a control instruction for the game application according to the living body detection result and the age evaluation data in combination with a preset local anti-addiction rule base.

The invention provides a non-contact on-line measuring device and method for excavator structural members, a double-scanning system cooperation mode is adopted, a tracker and a ball cage scanner are respectively used on two sides of a detection device, the ball cage scanners are installed on a cooperative robot to execute automatic scanning actions, and meanwhile, the robot is driven by the robot to move. The tracker and the robot are both installed on the linear guide rail, displacement operation can be carried out, the scanning and collecting range of the system is expanded, and therefore full scanning work of the large structural part is completed. The two scanning systems scan and collect the structural member from the left side and the right side at the same time, then data are spliced together, a three-dimensional point cloud model of the structural member is obtained, size information is analyzed and extracted, a detection report is generated, communication with a workshop data management system is carried out, and measurement data are integrated and applied.

The utility model provides a kind of electric hair dryer, it includes shell and hair dryer piece.The electric hair dryer of the utility model, shell inside is equipped with multiple independent air duct, each air duct independently sets air inlet, air outlet and hair dryer piece, airflow can independently circulate in respective air duct inside, effectively ensure the air speed, air pressure stability of each direction air outlet, improve overall hair drying efficiency;And, the air outlet direction of the air outlet passage formed by the electric hair dryer corresponding multiple air ducts is different, so that user can realize the coverage of multiple area airflow without frequently adjusting the position of electric hair dryer, to make airflow distribution more uniform, range more extensive, to effectively cover the different area of object to be blown dry, improve user's use experience.

The utility model relates to a cotton pesticide spraying device, including the vertical board of installing in the rear suspension of pesticide spraying agricultural machine, liquid medicine shower and air shower, the vertical board board surface is perpendicular arrangement along the advancing direction of pesticide spraying agricultural machine and its top end is elastically connected with the suspension, the liquid medicine shower is detachably connected with the board surface of the vertical board near its bottom end, and the spraying direction is obliquely arranged upwards, the air shower is installed with the liquid medicine shower on the same side of the vertical board and is located above the liquid medicine shower, and the spraying direction is obliquely arranged downwards, the utility model discloses through the liquid medicine shower obliquely upwards spraying liquid medicine to the back of cotton crown layer branch and leaf, while the air shower is obliquely downwards and sprays the airflow, makes the liquid medicine particle that floats under the action of airflow and returns to the surface of cotton leaf, solved the problem that the traditional spraying mode is difficult to cover the back of cotton leaf and the liquid medicine is easy to waste.

This invention discloses a multi-target adaptive jamming system based on an array antenna, belonging to the field of electromagnetic countermeasures and signal processing technology. The system includes an array antenna unit, a multi-channel RF front-end, a signal processing and control unit, and an environmental sensing unit. The array antenna scans the airspace and captures signals from multiple targets; the signal processing and control unit runs various algorithms to estimate the azimuth, frequency, and power parameters of multiple targets; an interference suppression matrix is ​​constructed based on singular value decomposition, generating multiple low-sidelobe focused jamming beams aimed at each target; the environmental sensing unit monitors background noise intensity in real time and dynamically adjusts the transmission power through a noise adaptive power control algorithm. This invention overcomes the shortcomings of traditional jamming techniques, such as energy dispersion, poor environmental adaptability, and unintelligent resource allocation. It can simultaneously achieve efficient and precise jamming of multiple targets, significantly improving the suppression ratio of a single target, and maintaining high jamming efficiency and resource utilization even in high-noise environments.

The utility model relates to welding equipment technical field, concretely relates to a kind of intelligent gantry submerged arc automatic welding machine, it includes: piece platform, top is equipped with multiple piece grooves along length direction, and both sides are equipped with machine tool track respectively;Welding machine tool, welding machine tool is transversely placed above piece platform, and two ends are respectively equipped with with machine tool track cooperation walking mechanism, welding machine tool top is respectively equipped with welding machine power supply corresponding each piece groove;Movable crossbeam, movable crossbeam is horizontally arranged in welding machine tool middle part, and movable crossbeam is equipped with with each piece groove corresponding cross slide;Telescopic arm, respectively with each cross slide corresponding each cross slide connection, bottom end is respectively equipped with welding torch, welding torch is connected with corresponding welding machine power supply;Controller, controller is set in one side of welding machine tool, and walking mechanism, telescopic arm, welding machine power supply and welding torch are respectively electrically connected with controller.The utility model is integrated, and automation design has significantly improved the efficiency and quality of I-shaped steel structure welding.

The invention relates to the technical field of fire monitors, and discloses a self-swinging fire monitor based on hydraulic drive, the self-swinging fire monitor comprises a monitor body and a base, the monitor body is rotatably mounted on the base, one side of the base is communicated with a fixed shell, a speed reducer is mounted on the fixed shell, and a disc is mounted on the speed reducer; a driving assembly used for driving the disc to rotate is installed in the fixed shell, the circular plate is driven to rotate relative to the disc, the eccentric distance of the sliding column relative to the rotating center is accurately adjusted through the composite guiding and limiting effect of the transverse groove and the semi-annular groove on the sliding column, and then the reciprocating swing angle of the cannon body is changed. The fire strafing range can be flexibly adjusted according to the actual area of a fire scene, water resource waste caused by too large swing during small-area fire extinguishment is avoided, no-missing coverage during large-area fire extinguishment can be ensured, when the sliding column moves to the center position, the fire strafing device is suitable for extinguishment of roadways, long and narrow spaces or fixed-point fire sources, and the fire extinguishing efficiency is improved. And stable direct current coverage or small-amplitude accurate scanning is realized.

This utility model discloses a material mixing device for fermented feed production, relating to the field of fermented feed production technology. The device includes a horizontal plate, with a movable component fixedly connected to one side of the top of the horizontal plate. A mixing mechanism is fixedly connected to the top of the movable component, and an auxiliary mechanism is fixedly connected to the other side of the top of the horizontal plate. A discharge mechanism is connected to the bottom of one side of the mixing mechanism. The mixing mechanism includes a housing, with the bottom of the housing fixedly connected to the top of the movable component. In this utility model, the mixing mechanism uses a stirring blade and a stirring rod to fully mix the materials inside the housing, effectively covering all areas and avoiding dead zones in the mixing. The auxiliary mechanism, by moving the movable frame, causes the housing to shake, promoting material mixing from another dimension and greatly improving the uniformity of mixing. Compared to traditional single-stirring methods, this device better meets the stringent requirements for uniform material mixing in fermented feed production, thereby improving feed quality.

The bentonite raw material drying equipment with the dust removal function comprises a first supporting seat, a second supporting seat and a drying machine, a material tank is rotationally connected between the first supporting seat and the second supporting seat, one end of the back face of the first supporting seat is fixedly connected with a first motor, and the inner side of the first supporting seat is rotationally connected with a lead screw; a first movable supporting base is slidably connected into the first supporting seat, a supporting frame is fixedly connected to the top of the first movable supporting base, a stirring mechanism is arranged on the front face of the supporting frame, and a second movable supporting base is slidably connected into the drying machine. The dust collection device is driven by the air cylinder to linearly move in the material tank, the third motor drives the steering ring to rotate, the steering ring further drives the dust collectors, the arc-shaped scraping blocks and other components to rotate together, the dust collectors can comprehensively collect dust on the inner wall of the material tank in the rotating mode, all parts of the material tank are effectively covered, and the dust collection efficiency is improved. Dust dead angles are avoided, and the comprehensiveness and thoroughness of dust collection are greatly improved.

The application discloses an abnormal flow cooperative detection method and system, relates to the field of network communication, and comprises the following steps: protocol adaptive identification and dynamic attack detection are carried out on a north-south WAF layer, attack fingerprints are generated, and global session IDs are bound; the application behavior is monitored in a whole link on an east-west RASP layer, context association and threat analysis are realized through the session IDs; WAF and RASP data are aggregated based on the session IDs, an attack feature propagation graph is constructed, and attack chain confidence is evaluated; when the confidence exceeds a threshold value, attack features are extracted by the RASP layer, virtual patch rules are generated, and feedback is fed back to the WAF layer for real-time updating; finally, bidirectional confidence fusion decision is realized through the WAF and the RASP, and cooperative blocking is realized. The application solves the problem that the north-south and east-west detection are split in the prior art, and cross-layer attack chains cannot be effectively blocked, realizes accurate and dynamic protection on complex attacks, especially encrypted flow and horizontal penetration.

This invention discloses an integrated intelligent monitoring system for air, space, and water using a wind-solar hybrid power supply, specifically relating to the field of intelligent monitoring. It includes a wind-solar hybrid power supply module, a sensing and monitoring module, a wireless self-organizing network communication module, and an intelligent management and control module. The wind-solar hybrid power supply module provides clean energy; the sensing and monitoring module collects environmental and operational data; the wireless self-organizing network communication module enables bidirectional data transmission and interaction between monitoring nodes; and the intelligent management and control module performs fusion analysis of multi-source data, water quality level prediction, and early warning triggering. The operation of the wind-solar hybrid power supply module specifically includes the following: classifying power supply differences into different levels based on power supply evaluation differences. This invention achieves long-term unattended, accurate, and efficient monitoring in outdoor scenarios without mains power through stable wind-solar hybrid power supply, comprehensive air, space, and water monitoring, reliable Mesh network transmission, and intelligent analysis, early warning, and dynamic optimization.

This utility model discloses a spraying mechanism for greening maintenance, comprising a main body, a mixing mechanism, an operating mechanism, and a transmission mechanism. The mixing mechanism includes a mixing tank, a first motor, a stirring shaft, a second motor, and a transmission shaft. The operating mechanism includes a first hose, a lifting plate, a spring, a fixing frame, a water supply component, and external components. The transmission mechanism includes a connector, a control valve, a booster pump, and a transmission pipe. With the coordinated action of these mechanisms, the uniformly mixed pesticide solution in this device can more effectively cover the plants, improve the effect of pest and disease control, and avoid the reduction in efficacy caused by uneven mixing of the pesticide solution, thereby reducing the amount of pesticide used and waste. In addition, the uniform spraying rate of this device can ensure that the pesticide solution is evenly covered on the plant surface, improve spraying efficiency, and accurately control the amount of pesticide solution sprayed, avoiding over- or under-spraying.

The utility model belongs to the technical field of forest tree crown pesticide application, and particularly relates to a forest tree crown pesticide application device which comprises a base, a pneumatic cylinder is installed on the base, a pneumatic rod is assembled at the acting end of the pneumatic cylinder, a supporting plate is fixedly connected to the top end of the pneumatic rod, a rotating column is rotationally installed on the supporting plate, and the rotating column is fixedly connected with the pneumatic cylinder. A mounting frame is fixedly connected to the top end of the rotating column, and a hollow pipe is rotationally mounted in the mounting frame; when in use, the height of the spray head can be adjusted according to the height requirement of a forest, so that the spray requirements of forest canopies with different heights can be met, the top area of a crown can be fully and effectively covered, the angle of the spray head can be flexibly adjusted in the horizontal direction and the vertical direction, and the spray head can better adapt to the three-dimensional structure of the crown; and by accurately adjusting the angle of the spray head, it can be ensured that pesticide liquid is accurately sprayed to a target area, pesticide liquid waste and environmental pollution are reduced, and the prevention and treatment effect is greatly improved.

The utility model belongs to glass cleaning technical field discloses a kind of air drying structure for glass cleaning machine, include: frame, air drying bin, air knife and air drying assembly, the frame is used for the support of air drying structure for glass cleaning machine, the air drying bin is set in frame, provides the environment of glass air drying, the air knife is connected in air drying bin, for air drying treatment to glass, the air drying assembly includes connecting piece, fan, flow guide piece and heating piece, the connecting piece is connected in frame, the fan is set in connecting piece, the flow guide piece is connected in connecting piece, the heating piece is set in the flow guide piece, the fan is driven gas along the heating piece flow by the flow guide piece, glass can be realized double air drying treatment, can ensure that hot air evenly, effectively cover glass surface, significantly improve the drying speed and effect of glass, effectively remove surface water stain, ensure that glass surface is free from water mark residue.

The present application relates to volatile gas treatment technical field, disclose a kind of organic liquid volatilization inhibitor and the method for inhibiting organic liquid volatilization.The organic liquid volatilization inhibitor contains hollow microsphere, surfactant, stabilizer, dispersant, coupling agent and solvent, for inhibiting organic liquid volatilization;Wherein, the density of the organic liquid volatilization inhibitor < the density of the organic liquid.The density of the organic liquid volatilization inhibitor provided by the present application is less than volatile liquid, with certain fluidity and stability, can realize the automatic covering and complete sealing to volatile organic liquid surface, effectively prevent organic liquid volatilization during storage, loading and transportation.

The invention discloses a solar absorber and a processing method, the solar absorber comprises a plurality of absorber units which are arranged in a periodic array, each absorber unit comprises a substrate layer, a dielectric layer, an ultrathin film layer and an antenna layer which are sequentially arranged from bottom to top, the antenna layer comprises a first antenna and four second antennas, and the first antenna and the second antennas are arranged in parallel. The projection of the first antenna on an XOY plane is in a cross shape, the projection of the second antennas on the XOY plane is in a square shape, the four second antennas are arranged in the four corners of the first antenna respectively, the projections of the substrate layer, the dielectric layer and the ultrathin film layer on the XOY plane are all in a square shape, the substrate layer is made of TiN materials, the dielectric layer is made of Al2O3 materials, and the ultrathin film layer is made of SiO2 materials. The ultrathin film layer is made of a TiN material, the first antenna is made of a Ni material, and the second antenna is made of a TiN material. The device has the advantages of simple structure, easiness in actual processing and production and good absorption effect.

The invention relates to the technical field of transformer substation inductance type coupling clamps, and particularly discloses a process-adaptive gas insulation transformer substation inductance type coupling clamp design method, which comprises the following steps of: establishing a process-constrained quantitative model and a process and electrical performance association relationship, and combining test requirements and field installation conditions of a gas insulation transformer substation to obtain a process-adaptive gas insulation transformer substation inductance type coupling clamp design model; determining a working frequency band and parameter constraints of the coupling clamp; an electromagnetic simulation model of the coupling clamp is constructed, key design parameters are obtained through simulation, and parameter allowance is set in combination with production process deviation and material batch fluctuation; according to high-frequency transient characteristics of a gas insulated substation, on the premise of meeting magnetic saturation requirements, magnetic core materials are selected by taking cost and process suitability as optimization targets, so that the problems that a traditional coupling clamp is narrow in frequency band coverage range and cannot adapt to special wide-frequency-band transient electromagnetic disturbance detection of a GIS are solved; secondary circuit transient common-mode current and shell surface current signals can be effectively coupled.

The application relates to the technical field of radio frequency microwave devices, in particular to a W-waveband wide-frequency RF MEMS multi-blade multi-pole switch which comprises a silicon substrate, a plurality of input / output ports and a MEMS cantilever beam switch unit, the MEMS cantilever beam switch unit is provided with a driving electrode, and the communication and disconnection of the radio frequency signal path between the corresponding input port and the output port can be controlled by applying voltage to the driving electrode. The application realizes the on-off of the radio frequency signal path by electrostatic driving control of the deformation of the cantilever beam, and the driving mode has the advantages of low power consumption, high speed and easy integration. Compared with the common single-blade structure, the application can realize more complex signal routing in a compact unit, improves the system integration and functional flexibility, realizes interference-free crossing by using the slot structure through the horizontal swing type structure and the vertical lifting type structure, significantly reduces the high-frequency parasitic effect, and ensures the transmission quality of the millimeter wave signal in the W waveband.

The invention relates to a multiphase composite flame-retardant waterproof coiled material and a preparation method thereof. The flame-retardant waterproof coiled material comprises an upper waterproof layer, a flame-retardant middle layer and a lower waterproof layer which are sequentially laminated and compounded from top to bottom, the upper waterproof layer and the lower waterproof layer are thermoplastic polymer layers; the flame-retardant middle layer comprises a base material layer, at least one first patterned flame-retardant layer combined on the upper surface of the base material layer and / or at least one second patterned flame-retardant layer combined on the lower surface of the base material layer, and a thermoplastic protective adhesive layer covering the surfaces of the patterned flame-retardant layers and the surface of the base material layer; the horizontal shape of the patterned flame-retardant layer is a two-dimensional area shape and corresponds to the plane outline of at least one fire risk area preset on the target laying surface.

The utility model belongs to the technical field of livestock shed disinfection, and particularly relates to a livestock shed disinfection spraying device which comprises a base plate, a disinfectant cylinder with a liquid injection opening is installed on one side of the top of the base plate, a liquid pump is installed on the top of the disinfectant cylinder, and a range adjusting device is installed on the other side of the top of the base plate. A metal hose is installed between the liquid inlet end of the range adjusting device and the liquid outlet end of the liquid pump, and a spraying assembly is detachably installed at the liquid outlet end of the range adjusting device. According to the disinfecting and spraying device for the livestock shed, a rotating disc rotates to drive a push-pull strip to push and pull a sliding base in a reciprocating mode, so that the sliding base horizontally moves in a reciprocating mode, then a spraying assembly is driven to integrally conduct horizontal position adjustment, and at the moment, an atomizing nozzle moves towards the side edge by one station; in the moving process, spraying dead angles existing between every two adjacent atomizing nozzles are made up, the coverage range of the atomizing nozzles is dynamically adjusted, and the spraying dead angles formed between every two adjacent atomizing nozzles are effectively covered.

The utility model provides a guide rail type G3PLC (Programmable Logic Controller) prepayment meter, which solves the problems of electricity stealing detection and the like of an electricity meter and comprises an MCU (Microprogrammed Control Unit) module, the MCU module is connected with a metering module and a communication module, the communication module adopts any one or combination of more of G3-PLC communication, RS485 communication and infrared communication, the MCU module adopts an HT5XXX type single-phase electric energy metering SoC (System on Chip) chip, and the metering module is connected with the MCU module. And the metering module is integrated in the MCU module. The system has the advantages of good detection effect, low deployment cost and the like.

This invention discloses a motor stator and engineering machinery based on synergistic cooling of layered flow channels and vortex spraying, comprising a stator core; a plurality of first channels, each located on the outer wall of the stator core; a plurality of second channels, each located inside the stator core; oil guide channels, located on the outer wall of the stator core and connected to each of the first and second channels; a housing, enclosing the stator core; a first oil-drenching ring, connected to a first end of the stator core, having a plurality of first vortex-shaped nozzles, each connected to a corresponding first channel; and a plurality of first cooling oil baffles on its inner wall for cooperating with corresponding second channels; and a second oil-drenching ring, connected to a second end of the stator core, having a plurality of second vortex-shaped nozzles, each connected to a corresponding first channel; and a plurality of second cooling oil baffles on its inner wall for cooperating with corresponding second channels. This invention features diverse oil circuit arrangements and good cooling uniformity.

The utility model provides an upper rotating device for ice cream making. The upper rotating device comprises a fixed plate, a pushing device, a rotating device and an extruding device, and the extrusion device is provided with a conical storage bin, a rotating rod, a mixing blade and a conical spiral guide blade, so that the raw materials can be efficiently mixed and stably extruded. The rotating device is driven by a worm and gear structure to drive the extrusion device to realize rotary extrusion, and is suitable for circumferential covering modeling of large ice cream; when rotation is not started, straight barrel type extrusion is achieved, and the requirements of various products are met. The pushing air cylinder is matched with the guide assembly to ensure stable lifting and accurate positioning. The device is compact in structure, easy and convenient to operate, attractive in appearance, high in production efficiency and suitable for diversified operation requirements of ice cream stores.

The application relates to the technical field of unmanned aerial vehicle inspection, in particular to an unmanned aerial vehicle inspection method and system based on power grid data, an electronic device and a medium, which are based on a resonance suppression circuit and comprise the following steps: calling historical fault records and associated sensor data of power equipment; constructing a three-dimensional model of a power grid site according to collected environment point cloud data and equipment coordinate data; calling historical power consumption records of each affected power consumption area through a data interface; calculating characteristic values of each power equipment according to each historical power consumption record; extracting component images of each maintenance component from power equipment images; and determining a target shooting point of the unmanned aerial vehicle by comparing the component images with corresponding reference clear images. In this way, the technical problem that the existing unmanned aerial vehicle inspection technology lacks intelligent decision-making capability of an inspection sequence is solved, and the intelligent level, resource utilization efficiency and hidden danger discovery capability of the unmanned aerial vehicle inspection are improved.

The invention relates to the technical field of storage tank cleaning, and particularly discloses a storage tank auxiliary cleaning device which comprises a vertical lifting mechanism and a horizontal cleaning execution arm, the horizontal cleaning execution arm is connected to the vertical lifting mechanism through a horizontal rotating mechanism, and a rectangular frame composed of rod pieces is arranged in the middle of the horizontal cleaning execution arm. The horizontal cleaning execution arm comprises a first telescopic rod and a second telescopic rod which are correspondingly connected with the two opposite sides in the length direction of the rectangular frame respectively, a cleaning executor is installed on the first telescopic rod, and the two opposite sides in the width direction of the rectangular frame are a third telescopic rod and a fourth telescopic rod respectively. Locking mechanisms are arranged between the telescopic ends of the third telescopic rod and the fourth telescopic rod and the rectangular frame. The technical problems that manual cleaning is high in safety risk, and existing automatic equipment is discontinuous in cleaning and has dead angles are solved, and the automatic cleaning device is particularly suitable for efficient, safe and full-coverage cleaning of paper pulp or building material pulp storage tanks internally provided with dense stand columns.

The invention relates to the technical field of breeding, in particular to a feeding device and method for factory ricefield eel breeding, and the feeding device comprises a charging barrel, a feeding port, a boss, a connecting block, a side shaft and a spiral cutter. According to the feeding equipment and method for factory-like ricefield eel breeding, through alternate arrangement and sliding fit of bosses and connecting blocks, an adjustable multi-layer stirring structure is formed, through cooperation with a spiral cutter on a side shaft, materials in a charging barrel can be stirred and crushed in all directions, through meshing fit of a first outer gear ring and a gear ring, the feeding efficiency is improved, and the feeding efficiency is improved. The connecting ring drives the top shaft and the connecting piece to rotate around the axis of the top shaft while driving the connecting piece to slide in the circumferential direction, and due to the compound motion, the spiral cutter on the side shaft can do circular motion along with the connecting piece to cover a larger stirring range in the charging barrel, and the material stirring uniformity and the crushing efficiency can be greatly improved.

The invention discloses an online customer service abnormal session detection method and device, a storage medium and a terminal, relates to the technical field of data processing, and mainly aims to solve the problem of low detection accuracy of an online customer service abnormal session. The method mainly comprises the steps of obtaining dialogue text data and interactive behavior log data, and extracting user identification information, customer service identification information and dialogue text keywords from the dialogue text data; performing feature extraction and fusion on the dialogue text data and the interactive behavior log data through a cross-modal fusion model, and performing local anomaly detection and global anomaly detection on fusion features through an anomaly detection model; according to the user identification information, the customer service identification information and the matching degree between the dialogue text keyword and the potential abnormal community, determining a community abnormal score of the target detection dialogue; and determining a detection result of the target detection dialogue according to a weighted summation result of the local abnormal score, the global abnormal score and the community abnormal score. The method is mainly used for detecting abnormal sessions.

The invention relates to the field of cosmetics, in particular to a plant sunscreen synergist as well as a preparation method and application thereof. The plant sunscreen synergist is composed of a scutellaria baicalensis extract, a tea leaf extract and a ligusticum wallichii extract, and when the weight ratio of the scutellaria baicalensis extract to the tea leaf extract to the ligusticum wallichii extract is 3: 1: 1, the synergist has the absorption effect of effective coverage of different UV wave bands, and the ultraviolet ray absorption effect is optimal.

The utility model discloses a spiral flow guide type mixing and stirring device based on culture medium preparation, and relates to the field of culture medium preparation. A driving mechanism is arranged above the culture medium preparation tank, a driving position of the driving mechanism and a stirring paddle in the culture medium preparation tank rotate around the interior of the culture medium preparation tank while rotating, the stirring paddle is spiral, and a plurality of flow guide holes are formed in the surface of a paddle blade of the stirring paddle; the device has the effects that the driving mechanism synchronously drives the stirring paddle to rotate and revolve around the central shaft of the culture medium preparation tank, when the spiral paddle rotates, the spiral curved surface pushes the culture medium to generate axial and radial composite flow, and the flow guide holes in the surface of the paddle are matched, so that the medium flowing at a high speed forms jet flow disturbance through the holes; a vertical circulating three-dimensional flow field is constructed in the tank body, meanwhile, revolution motion drives the stirring paddle to move in the radius direction of the tank body, and the disturbance range is enlarged.