67results about How to "Effective fit" patented technology

The invention relates to the field of image processing, in particular to a remote sensing image panchromatic sharpening method and a model training method and system. The training method comprises the steps that panchromatic-spectrum fusion features of a panchromatic image and a multispectral image and time information serve as prior information, and the prior information and a diffusion noise-added image are input into a diffusion model so that a fitting noise-added image can contain more panchromatic information and spectrum information; predicting the diffusion noise adding image and the panchromatic space-spectrum fusion feature through a Transform module so as to generate a reconstructed difference image in which complete panchromatic information and spectrum information are reserved; the method has remarkable advantages in the aspects of noise suppression and detail enhancement, and a multispectral image with more sufficient spectral information and spatial information can be generated.

The invention discloses a virtual power plant planning-operation two-stage distribution robust optimization method based on scene driving, and the method comprises the steps: S1, building a capacity configuration model and a master-slave game model based on a master-slave game framework of a power supply, a load and energy storage; s2, considering the correlation and uncertainty of fan and photovoltaic output to construct an uncertainty set of wind and light output probability distribution, and generating a plurality of typical scenes through a sampling and clustering algorithm; s3, performing comprehensive norm constraint on the confidence interval of the uncertain set under the driving of a typical scene, and establishing a distribution robust optimization model of the virtual power plant in two stages of planning and operation, wherein the distribution robust optimization model considers uncertainty; wherein the distributed robust optimization model comprises a capacity configuration model and a master-slave game model; and S4, solving the distribution robust optimization model containing the master-slave game model based on the modified Kriging model and a column and constraint generation algorithm. By utilizing the method, the influence of uncertainty on the planning rationality and the operation economy of the virtual power plant can be reduced.

The invention belongs to the technical field of hydrogel materials, and discloses a carboxylated chitosan modified silicone hydrogel contact lens material and a preparation method thereof. The preparation method comprises the following steps: mixing a siloxane monomer, a zwitterionic monomer, a first cross-linking agent, an initiator and a first organic solvent, and carrying out polymerization reaction to obtain silicone hydrogel; and mixing the silicone hydrogel, carboxylated chitosan, a second cross-linking agent and a second organic solvent, and carrying out a cross-linking reaction to obtain the carboxylated chitosan modified silicone hydrogel contact lens material. The zwitterionic monomer is introduced into the siloxane monomer polymerization process, and the carboxylated chitosan is adopted to modify the silicone hydrogel, so that the protein adsorption resistance and antibacterial property of the contact lens material are effectively improved. Meanwhile, the raw materials are wide in source, the preparation method is simple and easy to operate, and large-scale industrial production can be achieved easily.

The invention relates to a new energy GCI dq impedance acquisition method based on a BKA-BiLSTM model, and the method comprises the following steps: firstly, carrying out the mechanism modeling of a new energy grid-connected inverter based on the Norton's theorem, and analyzing the nonlinear mapping relation between the equivalent dq impedance of the new energy GCI and the port characteristics; secondly, establishing a new energy unit grid-connected system simulation model by utilizing MATLAB / Simulink software, and acquiring a data set required by BiLSTM neural network training under various working conditions; secondly, training a BiLSTM neural network by utilizing simulation data, and optimizing hyper-parameters of the BiLSTM by adopting a black-wing optimization algorithm (BKA); and finally, an RT-LAB hardware-in-loop test technology is combined with a small perturbation method to scan impedance characteristics of the GCI, and an actual impedance value required by model verification is obtained. Through example simulation analysis, the correctness of the GCI dq impedance identification method provided by the invention is verified.

The invention belongs to the technical field of medical instruments, and particularly relates to a reflux valve stent. A reflux valve support comprises a plurality of retaining parts and a plurality of positioning parts, one retaining part corresponds to one positioning part, the outflow end of each positioning part is fixedly connected with the outflow end of the corresponding retaining part, and the inflow end of each retaining part is provided with an anchoring part; a plurality of barbs are arranged in the circumferential direction of the anchoring part, and the free ends of the barbs are opposite to the inflow end of the positioning piece. According to the design that the inflow end of the positioning piece corresponds to the barbs, the inflow end of the positioning piece and the barbs clamp the aortic valve ring at two opposite positions in the axial direction, a two-way fixing structure is achieved, and the purpose that the aortic valve ring is well clamped through the positioning piece and the barbs is effectively achieved.

The invention belongs to the technical field of flow measurement, and particularly relates to a high-precision liquid flow measurement method and device which comprises a pipeline and a measurement assembly. A mounting pipe is arranged at the bottom of the pipeline; a slag outlet is formed in the bottom of the mounting pipe; the measuring assembly comprises a mounting column; a notch is formed in the top of the mounting column; a groove is formed in the middle of the notch; a mesh enclosure is fixedly connected to the interior of the groove; one end of the mounting column is fixedly connected with a sleeve; the outer side of the sleeve is fixedly connected with a hand wheel; the interior of the sleeve is fixedly connected with a flow meter; and a probe of the flow meter extends into the mesh enclosure. The positions of the mesh enclosure and the probe can be switched by rotating the hand wheel, on one hand, the mesh enclosure can be conveniently replaced or the probe can be conveniently overhauled, and on the other hand, the mesh enclosure is rotated to the outside of the pipeline when the mesh enclosure is cleaned, so that cleaned impurities can be outwards guided out through the slag outlet and cannot return to the inside of the pipeline again, and the cleaning efficiency is improved. And secondary pollution to conveyed liquid is prevented.

The utility model discloses a pipeline desilting pressure water pipe protection device in the technical field of water pipes, which comprises a working table, foot stands are uniformly arranged on the lower end face of the working table, a sliding groove is formed in the middle of the upper end face of the working table, and a bidirectional threaded rod is rotatably connected to an inner cavity of the sliding groove through a bearing. Two symmetrical sliding blocks are in threaded connection with the exterior of the two-way threaded rod, electric push rods are arranged in the upper end faces of the sliding blocks, and the electric push rods are fixedly connected with clamping blocks through output shafts; the water pipe dredging device solves the problems that when a water pipe is dredged, the water pipe cannot be effectively clamped and protected, and the surface of the water pipe is prone to being abraded.

The utility model discloses a urine collection device for urinary surgery, which relates to the technical field of urine collection for urinary surgery and comprises a urine collection tank, universal wheels are fixedly mounted below the urine collection tank, a three-way pipe is fixedly mounted at the top of the urine collection tank, a pipe hoop is fixedly mounted at the top of the three-way pipe, a drainage pipe is clamped in the pipe hoop, and a drainage pipe is arranged in the drainage pipe. A flow divider is fixedly installed in a three-way pipe, a sampler is slidably installed at the output end of the flow divider, the output end of the three-way pipe is communicated with a urine collecting box, a fixing plate is fixedly installed in the urine collecting box, a negative pressure fan is fixedly installed in the fixing plate, and the negative pressure fan is electrically connected with an external power source. According to the urine collection device, urine smell can be cleaned, urine can be collected in real time, the urine detection accuracy is improved, the whole sampling process is sealed, and the urine smell is prevented from overflowing.

The wearable lumbar and dorsal muscle training detection device comprises side bandages arranged on the two sides of the waist, the side bandages are connected through elastic bands, and hard plates are fixed to the front ends of the side bandages. Extension plates are upwards arranged on the rear sides of the side bandages, and detection motor pieces corresponding to the erector spinalis are evenly installed on the inner sides of the extension plates and used for detecting the stress states of the left erector spinalis and the right erector spinalis in the training process. A tightness observation mechanism is arranged on the outer side of the hard plate on one side and comprises a fixed box, a sliding plate, a boss, a sliding groove, a spring and an indication line, and the wearing tightness degree is visually displayed through the position change of the sliding plate. A tightening mechanism is arranged on the outer side of the hard plate on the other side and comprises a supporting plate, a rotating shaft, a rotary knob, an inclined plate, a torsional spring and a wedge-shaped groove matched with the connecting belt, tightening and fixing of the connecting belt are achieved through a one-way limiting structure, and locking is controlled to be released through the rotary knob so as to achieve quick detaching.

The utility model discloses a novel cold compress facial mask assembly which can meet the butt joint of a facial mask body and protective cloth, can independently replace the facial mask body or the protective cloth, can visually and effectively feed back the temperature condition of the facial mask body, can effectively fit the face of a patient, and improves the cold compress effect. According to the technical scheme, the mask is characterized by comprising a mask body and protective cloth, the mask body comprises a first butt joint face and a display face, the protective cloth comprises a second butt joint face and a skin-friendly face, the first butt joint face is detachably connected with the second butt joint face through an adhesion structure, and a plurality of temperature sensing parts used for detecting and feeding back temperature are arranged on the display face. The protective cloth can effectively isolate heat on the face of the patient, so that the sanitary condition of the face of the patient is protected, and the treated part is prevented from being over-stimulated or infected; according to the cold compress mask, medical staff can visually and clearly know the temperature condition of the mask body, so that the cold compress effect on a patient is maintained by replacing the mask body, and the patient is helped to recover more quickly.

The invention discloses a water-swelling elastic plugging agent for a water-based drilling fluid and a preparation method of the water-swelling elastic plugging agent. The water-swelling elastic plugging agent comprises the following components in parts by weight: 100 parts of a polyolefin elastomer matrix material; 15 to 20 parts of a reinforced matrix material; 0.8 to 1.5 parts of a polyolefin elastomer matrix material cross-linking agent; 8 parts to 15 parts of a reinforcing agent A; 20 to 30 parts of a reinforcing agent B; 15 to 30 parts of super absorbent resin; 15 to 20 parts of a plasticizer; 0.2 to 0.8 part of an isolating agent; 0.5 to 1 part of an anti-aging agent; the plugging agent provided by the invention is simple in preparation process, not only is beneficial to industrial production, but also is convenient to prepare plugging slurry on site, can achieve a good plugging effect, and provides an effective technical means for well leakage treatment.

The surface polishing equipment for boiler manufacturing comprises a base, a stand column is vertically installed on one side of the top end of the base, the other end of the stand column is fixedly connected with a top beam, a first air cylinder is distributed on one side of the stand column, and a lifting base is fixedly installed at the top end of the first air cylinder; a guide block is arranged on the side wall of one end of the lifting base, a second air cylinder is arranged on the inner side wall of the lifting base, and the other end of the second air cylinder is fixedly connected with an adjusting plate. By means of combined use of a first air cylinder, a second air cylinder, a first motor and a clamping seat, the position of the boiler can be limited and clamped according to the actual use requirement, by means of cooperation of the first motor, subsequent overturning of the boiler can be conveniently achieved, and then the boiler can be conveniently polished conveniently when the boiler is polished subsequently. And therefore, the grinding efficiency of the whole device and the practicability of the whole device are improved.

This invention discloses an electro-permanent magnet chuck, belonging to the field of chuck technology. The electro-permanent magnet chuck includes a support base, a top plate above the support base, and several fixed rods circumferentially connected between the support base and the top plate. A lifting ring is located at the top of the top plate. A lifting assembly is located between the support base and the top plate. Several connecting boxes are circumferentially distributed on the outer side of the support base. The connecting boxes and the lifting assembly are connected via an adjusting assembly. Each connecting box has two movably mounted electromagnetic chuck modules at its bottom for contacting the surface of the part to be lifted. A self-adjusting assembly is located between the connecting box and the electromagnetic chuck modules. This chuck features flexible and stable lifting, effective folding, flexible adjustment, automatic adjustment, and the ability to meet the contact requirements of different shaped surfaces of the part to be lifted. It is structurally reliable and simple to use.

The utility model relates to the technical field of plastic film tensioning mechanisms, and discloses a tensioning device for plastic film printing, which comprises a conveying support and a counterweight ring, a conveying roller group is mounted on one side wall of the conveying support, a fixing support is arranged on the front side of the conveying roller group, a positioning hole is formed in the upper end of the fixing support, and the counterweight ring is arranged in the positioning hole. A rocker is arranged on the rear side of the positioning hole, a positioning shaft is installed in the middle of the rocker, fixing shafts are installed on the rear sides of the two ends of the rocker, and hanging rods are installed on the front sides of the two ends of the rocker. When a plastic film is conveyed in the conveying roller, a balance weight ring is hung on a hanging rod at one end of the rocker, the rocker inclines under the action of the balance weight ring, in the inclining process, the roller sleeves at the two ends are matched with the conveying roller set to tension the plastic film, due to the arrangement of the balance weight ring, the roller sleeves can be effectively attached to the plastic film, and under the action of the balance weight ring, the plastic film can be effectively attached to the conveying roller set. The tensioning mechanism can react quickly, and frequent tensioning adjustment is not needed.

The utility model discloses an unwinding control system for composite spunlace cloth production, which relates to the technical field of spunlace non-woven fabric production equipment and comprises a controller, an unwinding platform, a drawing machine, a first web outlet curtain, a long conveying curtain, an inclined curtain, a second web outlet curtain, a web conveying curtain, a spunlace machine, an unwinding machine and a carding machine. A tension roller, a cloth guide roller I, a cloth guide roller II and a cloth guide roller III are arranged between the unreeling machine and the carding machine, a tension sensor is arranged on the tension roller, a drafting roller set is arranged above the inclined curtain, a pressing roller is arranged behind the second web outlet curtain, and the controller is in control connection with the infrared sensor, the tension sensor and the motor. And the tension roller, the cloth guide roller I, the cloth guide roller II, the cloth guide roller III, the pressing roller and a driving mechanism of the spunlace machine are respectively in control connection with the tension roller, the cloth guide roller I, the cloth guide roller II, the cloth guide roller III, the pressing roller and the spunlace machine, so that the problems that in the prior art, when composite spunlace cloth is produced, a coiled material is prone to wrinkling, breaking and stacking, the coiled material and a cotton web are instable during compositing, and the product quality is affected are solved.

The utility model discloses a liquid heater belongs to the field of life electric appliances, has solved the problem that the low strength of flexible PCB board easily deforms and leads to component false welding, and the technical scheme of solving this problem mainly includes glass kettle body, the outside wall of glass kettle body is equipped with flexible detection board and circuit board support, and the end angle of flexible detection board is equipped with the end angle reinforcing position of increasing strength, and the both longitudinal sides of flexible detection board are equipped with the side reinforcing position of longitudinal extension, and circuit board support is pressed in the end angle reinforcing position and side reinforcing position, and flexible detection board is pressed and is installed in the outer wall of glass kettle body. The utility model is mainly used for improving the strength of flexible PCB board to improve the reliability of flexible PCB board.

The utility model discloses an ergonomic dining chair with an angle adjusting function, which is characterized by comprising a base, a telescopic rod component, a chair seat frame, a chair seat cushion, a back frame, a chair backrest, a chair back connecting mechanism and a swinging reed, the chair seat frame is telescopically mounted above the base through the telescopic rod assembly; the chair seat cushion is detachably mounted on the chair seat frame; the back frame is vertically fixed on the rear side of the chair seat frame; the bottom end of the swinging reed is fixedly mounted on the chair back connecting mechanism; the chair back connecting mechanism is rotatably mounted below the back frame; and the chair backrest is mounted on the swinging reed and can swing back and forth relative to the chair back connecting mechanism. A linkage adjusting mechanism of the telescopic rod assembly and the chair back connecting assembly can meet the sitting posture requirements of people with different heights, the height of the chair seat and the inclination angle of the backrest can be adjusted and adapted, a dynamic function meeting the natural rhythm requirements of a human body is provided, and proper swinging movement can promote blood circulation and improve the long-time sitting comfort.

The utility model relates to the technical field of joint beautifying, concretely is joint beautifying integrated glue filling and scraping tool, including fixed part and the scraping part of setting on fixed part, the fixed part is used for installing on the gun head of glue gun, the end of scraping part is arc edge structure, and is located V type glue leakage mouth in scraping part end, and is located V type glue leakage mouth position in scraping part in -close setting has the pressure block, this joint beautifying integrated glue filling and scraping tool, through the integration of glue filling and scraping function in one, reduced the step needing to change tool in traditional craft, simplified the operation process, improved the efficiency of joint beautifying construction significantly, in addition, through the fixed part installation on the gun head of glue gun, realize convenient connection with glue gun, and the arc edge structure and V type glue leakage mouth design of scraping part end, can make glue material even flow, and the opening direction of fixed part can accurate control glue direction.

The invention discloses a centrifugal fan with a three-dimensional flow impeller and a using method thereof.The centrifugal fan with the three-dimensional flow impeller comprises a fan volute and a three-dimensional flow impeller body rotationally arranged in the fan volute, and a variable air outlet flow guide part is arranged in the fan volute; the memory metal plate is tightly attached to the inner wall of the volute-shaped air guide plate and is attracted and fixed to the first strong magnetic piece, at the moment, the curvature of a flow channel in the whole fan volute is in the maximum design range, strong airflow smoothly and slowly transits to an air outlet to be exhausted along the inner wall of the memory metal plate, and the vortex and airflow howling conditions are effectively avoided. When the air speed is reduced to be lower than the preset air speed, the whole memory metal plate deforms inwards, so that the worm-shaped air guide plate and the memory metal plate form a guide channel with larger curvature, low-speed air flow can be quickly guided to be discharged from the air outlet, air outlet is more concentrated, and return air turbulent flow is prevented from being formed at the air outlet.

The present invention relates to the technical field of tunnel trolleys, specifically to a tunnel trolley with an adjustable load-bearing foot suspension, comprising a trolley frame, a lifting device and an auxiliary support device, the trolley frame comprising a pair of bottom beam seats and multiple groups of support columns connected to the two bottom beam seats, a lifting device is arranged between the bottom of the support base and the bottom beam seat, and an auxiliary support device is arranged at the intervals between each group of support columns on the bottom beam seat, with beneficial effects as follows: in the auxiliary support device of the present invention, the telescopic rod of the hydraulic cylinder is extended by controlling the support foot adjustment until the support chassis contacts the ground for support, at which time the auxiliary support device performs auxiliary support on the trolley frame to ensure the stability of the trolley frame during construction, and the adjustment and control operation of the auxiliary support device is convenient; a hinged ball end is arranged at the lower end of the support block, and the hinged ball end is hinged to the upper end of the support chassis, so that the support chassis can be rotated arbitrarily within a certain angle range to ensure the effective fitting of the support chassis with the uneven bottom surface.

This utility model relates to a regulating valve with a measuring mechanism, belonging to the technical field of regulating valves. It includes a regulating valve body, a filter element inserted into the lower right end of the regulating valve body, the filter element having multiple filter holes on its surface, a measuring mechanism located on the right side of the regulating valve body, and a regulating mechanism for adjusting the liquid flow rate located on the lower side of the regulating valve body. The measuring mechanism includes a fixed seat fixedly connected to the right side of the regulating valve body. This regulating valve with a measuring mechanism, by inserting and securing the filter element to the liquid inlet side of the lower right end of the regulating valve body, effectively conforms to the outer surface of the liquid inlet. When liquid passes through, the filter holes on the surface of the filter element filter the liquid, removing residual impurities or particles, thereby effectively improving the service life of the regulating valve body and preventing jamming of the valve core or seat.

The utility model relates to the field of oral care clinical technology industry, in particular to a liquid taking device for a drip bottle. The technical problems that a conventional liquid taking device is difficult in liquid taking, liquid medicine is prone to secondary pollution after being started, and meanwhile the device is lack of leakproofness, so that the liquid medicine is prone to being wasted are solved. According to the technical scheme, the liquid taking device for the infusion bottle comprises a hopper body, a sealing cover and an insertion tube. According to the utility model, the intubation tube is inserted into the bottle body of the drip bottle through the bottle plug, so that liquid medicine in the bottle body is guided into the hopper body through the intubation tube, and when liquid is taken, the sealing cover is opened, so that a small amount of liquid medicine in the hopper body flows into a preset container, and the small amount of liquid medicine in the drip bottle can be quickly taken; the invasion of external pollution is prevented, the secondary pollution of the liquid medicine or the waste caused by volatilization and oxidation is not easily caused, and the problems are solved.

The utility model discloses an automatic tightening mechanism for a mascara cream top cover, and particularly relates to the technical field of automatic tightening of top covers. Guide plates which are symmetrically mounted are arranged on the transmission machine; first cylinders are arranged on two sides of one end of the guide plate; a motor is arranged above the middle position of the two first air cylinders; a plurality of supporting arms and pressing blocks are arranged at the bottom of the motor; the pressing block is arranged in a step shape; when the mascara cream conveying device is used, mascara cream bottle bodies are placed on the conveying machine, then top covers are placed on the tops of the bottle bodies, sequential and effective conveying is achieved, and after the bottle bodies are separated from the guide plate, through sensing of the sensor and after two first air cylinders are fixed, a second air cylinder installed on one side of the sliding plate drives a motor to move through an L-shaped frame; a pressing block on the inner side of a motor bottom supporting arm is attached to the top of the top cover, so that the pressing block drives the top cover to rotate; and during downward screwing, the third air cylinder drives the sliding plate to move downwards, compensation of the stroke of the second air cylinder is achieved, and screwing treatment of the top cap and the bottle body is effectively guaranteed.

The utility model discloses a kind of floating axle reducers, it is related to the technical field of reducer, solve the problem that less tooth difference reducer and cycloidal pin wheel reducer are prone to vibration, noise and big back difference.This utility model is provided with eccentric sleeve on input shaft, and transmission gear is rotatably arranged on eccentric sleeve;Bearing structure and equal load ring are arranged on input shaft and are rotatably connected with input shaft, and bearing structure and equal load ring are located on the both sides of transmission gear;Transmission gear outside is provided with inner gear ring and is engaged;The outer ring of inner gear ring and bearing structure is connected;Pin shaft is arranged in the pin hole of transmission gear;One end of pin shaft is connected with the inner ring of bearing structure, and the other end is connected with equal load ring;Floating pin sleeve is arranged on pin shaft, and elastic ring is arranged between pin shaft and floating pin sleeve.The utility model sets up elastic ring between pin shaft and pin sleeve, uses elastic ring to absorb the impact brought by transmission gear, and offsets the machining error of pin hole on transmission gear, offsets the backlash of transmission gear, reduces back difference.

The utility model discloses a portable fire-fighting smoke exhaust device, and relates to the technical field of fire-fighting appliances. The battery box is mounted on the main beam, and a switch is arranged on one side; the mounting beam is mounted at one end of the main beam; the smoke exhaust fan is installed on the installation beam, the battery box is connected with the smoke exhaust fan through an electric wire to supply power to the smoke exhaust fan, and air is blown to the end away from the battery box when the battery box rotates; and the handle is arranged on the main beam. The fire-fighting smoke exhaust device has the effect that the portability of the fire-fighting smoke exhaust device is improved.

The invention relates to a goggle frame (1) and to a device (2) for coupling same to the facial aperture of protective helmets, characterized in that both the goggle frame (1) and the device (2) comprise magnetic attachment means arranged relative to one another so as to create enough magnetic attraction to allow magnetic attachment of one to the other, said goggle frame(1) being further characterized in that it comprises gripping means (20), and said device (2) being further characterized in that it consists of one or more bodies comprising a base portion (24 or 26) configured to be entirely or partially located in the facial aperture of the protective helmet and in that it comprises attachment or adhesion means.

The utility model discloses a glue brushing type asphalt damping plate production device. The glue brushing type asphalt damping plate production device comprises a calendering system, an embossing device, a glue coating system, a film covering device and a forming system which are arranged in sequence. Due to the arrangement of the calendaring scrapers, the damping plate sheets can smoothly enter the water-cooling conveying belt, and roll sticking is prevented; the gluing scraper which can be freely arranged and adjusted within the stroke range is adopted, the gluing requirements of damping plates with different glue layer thicknesses are met, meanwhile, a glue groove upper and lower proximity switch and a compression roller driven by an air cylinder are arranged, and continuous supply of glue and effective and rapid transfer of glue layers are guaranteed; a tension roller is arranged at the front section of the film laminating roller and is used for tension adjustment and constant-tension unwinding of the isolating film, the problems of edge collapse, folding marks, wrinkles and the like in the unwinding process are avoided, and effective attachment of the isolating film and an adhesive layer is guaranteed; due to the arrangement of the multiple sets of tensioning rollers, inspection in the production process can be reduced, linear speed matching can be met, and the problem that the damping plate is excessively loosened or tensioned in the continuous traction conveying process is solved.

The invention discloses a light broadband wave-absorbing material which is of a three-dimensional structure and comprises a reflecting layer and a peripheral square ring wave-absorbing unit, the peripheral square ring wave-absorbing unit is vertically arranged on the reflecting layer and forms a cavity structure with the reflecting layer, an inner square ring wave-absorbing unit which forms a self-similar structure with the peripheral square ring wave-absorbing unit is arranged in the cavity structure, and an outer square ring wave-absorbing unit which forms a self-similar structure with the inner square ring wave-absorbing unit is arranged in the cavity structure. Gaps among the reflecting layer, the peripheral square ring wave-absorbing unit and the inner square ring wave-absorbing unit are filled with flexible wave-absorbing foam. According to the light broadband wave-absorbing material provided by the invention, the square ring wave-absorbing units with self-similar structures form resistance rings arranged in an array, and the resistance rings can be coupled to generate response of an electric dipole mode, so that electromagnetic waves can enter the material as much as possible to be consumed and converted into heat energy, the wave-absorbing efficiency is improved, and the wave-absorbing effect within the frequency band range of 1-75GHz can reach-10dB; and meanwhile, the self-similar square ring unit structures are all cavity structures, so that the density of the material is effectively reduced.

The application relates to the technical field of hydropower stations, in particular to a water power station scraping brush type water filter which comprises a filtering assembly, a cleaning assembly and the like. The filtering assembly comprises a base, a control box arranged at the top end of the base, a water conveying pipe mounted on the side wall of the control box, a secondary filtering pipe arranged on the side wall of the water conveying pipe and a filtering piece arranged on the side wall of the water conveying pipe. The cleaning assembly comprises a flow guide pipe arranged on the side wall of the filtering piece, the diameter of the flow guide pipe is arranged in an upper wide and lower narrow mode, a scraping piece is arranged on the inner wall of the flow guide pipe close to the filtering piece, the scraping piece is connected with the flow guide pipe through a connecting piece, and the combination design of a rotating ring of the connecting piece and a sliding rod realizes accurate adjustment of the contact pressure of a scraping plate and a filtering screen. The self-adaptive pressure control mechanism can automatically adjust according to the actual situation of the filtering screen while ensuring efficient scraping, reduces the abrasion of the filtering screen and prolongs the service life of the equipment.