70results about How to "Easy to catch" patented technology

The invention aims at providing a moon cake sorting method and system based on visual inspection. The method comprises the steps that images of moon cakes to be sorted are obtained; preprocessing the images of the moon cakes to be sorted; and judging and sorting the processed mooncake images. According to the mooncake detection system and method, mooncake images shot at multiple angles are fused, mooncake images at shooting dead corners are intelligently calculated, the technical problem that mooncake defects cannot be detected at the shooting dead corners is solved, mooncake detection models are improved, mooncakes with defects can be detected more rapidly and more accurately, and the mooncake detection efficiency is improved. And the production efficiency of moon cakes is greatly improved.

The invention provides a composite flotation reagent for separating feldspar and quartz and a flotation method. The composite flotation reagent for separating the feldspar and the quartz comprises a first flotation agent, a second flotation agent and a third flotation agent, and the first flotation agent comprises, by mass, 20-25 parts of a collecting agent and 1-4 parts of a pH adjusting agent; and the second flotation agent comprises the following components in parts by mass: 6-8 parts of an inhibitor and 1-4 parts of mixed phosphate. According to the method, one-time flotation separation of quartz and feldspar is conducted on the lepidolite tailings through the flotation reagent, quartz fine sand with the SiO2 content higher than 99% can be obtained, the standard requirement of glass industry materials is met, and the effect is close to the flotation separation effect of hydrofluoric acid; therefore, the flotation process is simplified under the condition that the flotation effect is guaranteed, and compared with flotation separation conducted through a hydrofluoric acid method, the influence of flotation separation conducted through the composite flotation reagent for separating feldspar and quartz in the embodiment on the environment is greatly reduced.

The utility model provides a floating type photovoltaic power generation system, and relates to the field of photovoltaic power generation. The floating type photovoltaic power generation system comprises a cage assembly, a buoyant raft assembly, an elevated assembly and a photovoltaic assembly, the cage assembly comprises a plurality of cages, and each cage is used for breeding; the floating raft assembly comprises a transverse supporting piece, a longitudinal supporting piece and a floating piece, the number of the elevating assemblies is multiple, each elevating assembly comprises a plurality of first elevating pieces and second elevating pieces, the first elevating pieces are arranged on the longitudinal supporting piece at intervals in the first direction, and each second elevating piece is erected on at least two first elevating pieces; the photovoltaic assembly is laid on the elevated assembly, and a pedestrian path is formed between the photovoltaic assembly and the buoyant raft assembly. According to the floating type photovoltaic power generation system, the breeding function and the photovoltaic power generation function are achieved through the suspension cage assembly, the floating raft assembly, the elevating assembly and the photovoltaic assembly, and the economic benefits of the floating type photovoltaic power generation system are improved.

The utility model discloses a large-scale steel structure assembly type multifunctional artificial fish reef with high environment adaptability to deepwater, which relates to the technical field of marine ranch construction, and comprises a plurality of groups of support column components, each support column component comprises a first upright post, a second upright post and a third upright post which are sequentially lowered from inside to outside, the first stand column, the second stand column and the third stand column are detachably connected through a plurality of first cross beams, the multiple sets of supporting column assemblies are arranged at equal intervals in the circumferential direction and connected through a plurality of second cross beams, and ecological flow guide plates are detachably assembled on the inner second cross beam and the outer second cross beam correspondingly. The bottoms of the first stand column, the second stand column and the third stand column are each provided with a stable anchor disc. The problems of subsidence and deposition of the reef body on the soft soil foundation are solved, and the adaptive capacity of the reef body to the environment is improved; the function of various flow field conditions is realized through the flexibly adjustable ecological flow guide plate, and the required flow field effect can be formed by adjusting the distribution and angle of the ecological flow guide plate according to the flow field requirement.

The invention discloses a polyphenylene sulfide fiber pps filter bag, and relates to the technical field of filter materials. The invention discloses a preparation method of a polyphenylene sulfide fiber pps filter bag, which comprises the following steps: carrying out melt extrusion granulation on polyphenylene sulfide and modified silicon dioxide to obtain granules; carrying out melt-blowing spinning, heat setting and hot rolling on the granules to obtain a pps filter bag; the modified silicon dioxide is obtained by modifying aminated mesoporous silicon dioxide with ethylenediamine tetraacetic anhydride and then carrying out epoxy treatment with epichlorohydrin. The prepared modified silicon dioxide is added into polyphenylene sulfide for granulation and melt-blowing treatment, the obtained polyphenylene sulfide fiber has the advantage of being good in mechanical property, the prepared polyphenylene sulfide fiber is used for preparing a pps filter bag, the prepared filter bag is applied to filtering treatment of high-temperature flue gas, the advantages of oxidation resistance and cross-linking resistance are achieved, and the application prospect is wide. And high filtering precision and trapping effect are achieved when smoke is filtered in a hot oxygen environment.

The utility model belongs to the technical field of medical instruments, in particular to a ureter stent tube and a pulling device, which comprises a stent tube, a guide wire, a pushing tube, a catheter and a catcher, a plurality of tail wires are arranged on the stent tube, a plurality of suckers are arranged on the tail wires at equal intervals, one end of the pushing tube wraps the tail wires and is sleeved at the outer end of the stent tube, and the other end of the pushing tube is sleeved at the outer end of the catheter. A first operation cavity, a second operation cavity, an air inflation cavity and a water injection cavity are formed in the catheter, the first operation cavity and the second operation cavity facilitate penetrating of the guide wire and the capturing device, the air inflation cavity facilitates air inflation into the air bag, the water injection cavity injects water into the bladder, a traction base, a mounting plate and a reset spring are arranged in the capturing device, and the traction base is connected with the mounting plate and a pull ring through a traction rope. By means of the device, a stent tube can be directly pulled out conveniently, pain and inconvenience caused by pulling out of special instruments such as a cystoscope and a ureteroscope can be avoided, and meanwhile the economic burden of a patient is reduced.

The utility model discloses a frameless greenhouse for aquaculture, which relates to the technical field of aquaculture and comprises a main beam and a steel wire rope, the main beam is fixedly connected with one ends of a plurality of connecting rods, the other ends of the connecting rods are fixedly connected with the upper end of a fixing plate, a plurality of fixing piles are arranged at the lower end of the fixing plate, and the steel wire rope is fixedly connected with the main beam. A first balancing weight is fixedly arranged at one end of the steel wire rope, the other end of the steel wire rope is fixedly connected with winding rollers in the winding box, a second balancing weight is fixedly arranged at the lower end of the winding box, round penetrating holes are formed in one ends of the multiple winding rollers, and the multiple winding rollers are rotationally arranged on a mounting shaft. And a limiting mechanism for conveniently fixing the winding roller is arranged at the other end of the winding roller, a linkage mechanism for conveniently driving the multiple rotating rollers to synchronously rotate is arranged on the mounting shaft, the winding roller is conveniently limited through the limiting mechanism, and the linkage mechanism conveniently and synchronously drives the multiple winding rollers to rotate so as to wind the steel wire rope.

The invention relates to the technical field of deep sea net cages, and discloses a fixed mooring type ecological environment-friendly deepwater net cage and a using method thereof. Lifting assemblies are arranged on the outer sides of a first fixing ring and a second fixing ring; the auxiliary assembly is mounted on the inner side of the counterweight frame; the moving assembly is arranged at the top of the lifting assembly and used for all-directional feeding. An output shaft of a servo motor drives a gear to rotate, the gear moves on the outer side of teeth, so that a mounting base moves above an annular frame through four rollers, a sprinkling assembly can be driven to annularly move on the top of a culture net, then an output shaft of a second driving motor drives a fixing shaft to rotate, and the fixing shaft is driven to rotate; according to the feeding device for red sea bream breeding, the spiral blade can guide bait in the hopper into the guide barrel, then the bait falls into the scattering square pipe, meanwhile, the fixed shaft drives the scattering square pipe to rotate, and therefore the bait in the scattering square pipe is scattered, all-dimensional uniform feeding can be conducted, and the feeding efficiency of red sea bream breeding is improved.

The utility model provides a protection mechanism and a construction lifting platform, and belongs to the technical field of lifting platforms. The protection mechanism comprises a lifting structure and a protection structure, the lifting structure comprises a lifting assembly, an operation platform and a door plate, the operation platform is connected with the lifting assembly, the door plate is hinged to the operation platform, and the protection structure comprises a sliding frame, a screw rod, a first protection assembly, a second protection assembly and a clamping assembly. The sliding frame is in sliding connection with the operation platform, the sliding frame is connected with the operation platform through the screw rod, the first protection assembly is arranged in the operation platform, the second protection assemblies are arranged on the three faces of the operation platform, the clamping assembly is arranged on one side of the operation platform, and the clamping assembly is arranged on the other side of the operation platform. And the clamping assembly is clamped with the second protection assembly. According to the protection mechanism and the construction lifting platform, the height of the operation platform can be conveniently adjusted, and the practicability of the device is improved.

The present application relates to the technical field of robot grabbing operation, and more particularly to a multifunctional operation manipulator, comprising: an outer ring mechanism and an inner ring mechanism capable of relative rotation, a driving device for driving the outer ring mechanism and the inner ring mechanism to relatively rotate, and a grabbing device connected to the outer ring mechanism; the grabbing device comprises a fixed base fixed to the outer ring mechanism and a plurality of bendable fingers arranged at equal intervals along the circumference of the fixed base; the bendable fingers comprise an unfolded state, a gathered state and an intermediate state between the unfolded state and the gathered state; the positive and negative amplitude of the rotation angle of the outer ring mechanism and the inner ring mechanism does not exceed the included angle between the line connecting two adjacent bendable fingers and the axis.

The present application relates to the field of steel smelting, and discloses a method for removing inclusions in steel, comprising the following steps: S1, bottom argon blowing is performed on molten steel in a ladle at a first argon blowing flow rate; S2, power ultrasound is applied to the molten steel at a first frequency to refine argon bubbles; S3, power ultrasound is applied to the molten steel at a second frequency lower than the first frequency to promote diffusion of the refined argon bubbles; and S4, bottom argon blowing is performed on the molten steel at a second argon blowing flow rate lower than the first argon blowing flow rate. By refining the size of the argon bubbles and changing the motion trajectory of the argon bubbles, the present application improves the contact probability of the argon bubbles and non-metallic inclusions in the molten steel, and strengthens the removal effect of the non-metallic inclusions by the ladle bottom argon blowing process.

The invention discloses a thin film deposition device based on an automatic compensation function for target material consumption, relates to the technical field of thin film deposition, and comprises a thin film deposition device body and a controller, wherein a box body is arranged outside the thin film deposition device body, a vacuum chamber and a controller are installed inside the box body, a bearing platform and a plurality of target material limiting components are installed inside the vacuum chamber, a driving motor and a plurality of magnets are arranged above the vacuum chamber, a supporting platform and a base are installed at the bottom of the vacuum chamber, an adjusting component and an air supply component are installed at the bottom of the supporting platform, the adjusting component is connected to the bearing platform, a target material block is arranged between the target material limiting components, the target material block cooperates with the driving motor, a plurality of detection components are installed inside the vacuum chamber, the detection components cooperate with the driving motor and the adjusting component respectively, the detection components can detect the surface of a wafer, so that when the device is used, the air supply component and the target material can be supplemented according to the condition presented by the wafer.

The application provides a fault prediction method and related device of an oil-immersed transformer, and belongs to the technical field of transformer fault prediction. According to the fault stage division result of the oil-immersed transformer, the fault stage in which the current oil-immersed transformer is located is determined; the first data is retained to evolve the law, the second data is extracted to reflect the sensitivity feature of the oil-immersed transformer fault, the third data is extracted to reflect the physical essence feature of the oil-immersed transformer fault, and the first feature vector, the second feature vector and the third feature vector are obtained correspondingly; according to the fault stage in which the current oil-immersed transformer is located, the first feature vector, the second feature vector and the third feature vector are fused to obtain a fused channel feature vector; and the fused channel feature vector is input into an improved DCCNN model with determined parameters to obtain a fault prediction result of the oil-immersed transformer. The application solves the problem that the accuracy of the fault prediction of the oil-immersed transformer is not high.

The application belongs to the technical field of lunar resource utilization, and specifically discloses a test platform for lunar soil water ice microwave heating, which comprises a tank body, a temperature adjusting unit, a pressure adjusting unit, a microwave heating unit, an infrared thermal imager, a lunar soil placing table, an inert gas introduction unit and a water vapor collecting unit. The temperature adjusting unit and the pressure adjusting unit are respectively used for adjusting the temperature and the pressure inside the tank body. The microwave heating unit and the infrared thermal imager are respectively used for microwave heating and infrared thermal image monitoring of the inside of the tank body. The inert gas introduction unit comprises a uniform gas outlet table arranged in the inside of the tank body and a gas supply unit connected with the uniform gas outlet table. The lunar soil placing table is arranged on the uniform gas outlet table. The water vapor collecting unit is used for collecting water vapor generated by the lunar soil sample. The test platform has a reasonable structure and can complete the test of lunar soil water ice microwave heating through ground experiments.

The present application relates to a kind of structural color adhesive, preparation method and application, it is related to photonic crystal composite material and adhesive service failure monitoring technical field.Magnetic colloidal particles are dispersed in polymer monomer, or magnetic colloidal particles and polymer monomer are dispersed in solvent to obtain precursor dispersion liquid, under the action of external magnetic field, by radiation curing to obtain structural color adhesive with stress color change ability;Non-magnetic colloidal particles and polymer monomer are dispersed in solvent, and precursor dispersion liquid is obtained by solvent evaporation method, and structural color adhesive with stress color change ability is obtained by radiation curing.Under the action of external force (tension, compression or shear), adhesive material can change color, and color can be restored when external force is removed.The introduction of structural color in the present application gives adhesive the ability of stress-induced color change, and realizes the visual indication function of adhesive bonding strength in service process.

The present invention discloses a photovoltaic power station component, which relates to the field of photovoltaic technology, including a plurality of floating rows, on which a plurality of bases are evenly installed along the length direction, and photovoltaic units are rotatably installed on the bases; the floating rows are parallel to each other, and a plurality of connecting rods are rotatably installed on both sides of the floating rows; a mounting frame parallel to the floating rows is arranged between two adjacent floating rows, and the corresponding connecting rods on the two adjacent floating rows are rotatably installed on the mounting frame, and a strip-shaped air bag is fixedly installed on the bottom of the mounting frame. In the present invention, the photovoltaic units are evenly arranged on the floating rows, and the distance between the floating rows remains unchanged under normal working conditions, that is, the photovoltaic panels will not block each other; when it is necessary to fish and desilt the fish pond, it is only necessary to deflate the air bag to eliminate the buoyancy of the air bag, so that the floating rows can be brought closer to each other, thereby freeing up space for the pond surface, which is convenient for fishing and desilting.

The utility model discloses a sewage treatment integrated equipment with recycling function, including treatment pond and reaction pond, the outer wall on treatment pond is installed with reaction pond, the outer wall on treatment pond far from reaction pond one side is installed with waste pool, the treatment pond outside of reaction pond one side is provided with the support cylinder, the outer wall on support cylinder is installed with the feed pipe, the outer wall on support cylinder near reaction pond one side is installed with the feeding pipe, and the feeding pipe extends to the inside of reaction pond. The utility model not only has realized that sewage treatment integrated equipment carries out multistage filtration treatment to the sewage of handling completion, has facilitated the convenient scraping of the flocculation or pollutant on the sewage surface, has improved the efficiency to the sewage treatment, and has facilitated the convenient cleaning to the filter cylinder, avoided the jam of filter cylinder because of too many sewage impurities, improved the effect of sewage treatment integrated equipment to the sewage treatment.

The utility model discloses a tailing treatment impurity removal filtering device which comprises an inclined screening net plate and a machine frame, and a spiral feeding machine is installed at one end of the top of the machine frame. By installing the magnetic separation pretreatment mechanism and the like, when the device is used, a user can pour tailing raw materials into the feeding box in advance, at the moment, an electromagnetic coil on the magnetic separation pretreatment mechanism is powered on, based on the principle that magnetism is generated by electricity, an adsorption plate outside the magnetic separation pretreatment mechanism has magnetism, and therefore the magnetic part in the poured raw materials can be adsorbed; after one-time feeding is completed, an electric telescopic rod is started to drive an adsorption plate to be lifted to be separated from the interior of the feeding box, then an electromagnetic coil in the adsorption plate is powered off, so that the adsorption plate loses magnetism, and at the moment, a user can conveniently receive the magnetic materials stripped by the adsorption plate through a tray; and the spiral feeding machine is started, and the tailings subjected to coarse separation can be automatically and uniformly fed into the inclined screening net plate.

The invention discloses a water-saving dust fall vehicle which comprises a movable transport vehicle, a closed water tank is arranged on the movable transport vehicle, a plurality of ultrasonic atomizers are arranged in the water tank, water in the water tank can immerse the ultrasonic atomizers, and the ultrasonic atomizers vibrate to enable the water to be atomized and gathered on the water surface and above the water surface; a mist outlet is formed in the top or the upper portion of the water tank and connected with a flow guide pipe, at least one fan is arranged above the ultrasonic nebulizer, air generated by the fan is blown to the water surface and the position above the water surface, water mist formed on the water surface and the position above the water surface is blown to the mist outlet in a pressed mode, and then the water mist is released to the outside atmosphere through the flow guide pipe. The water-saving dust falling vehicle is good in dust falling and haze reducing effect, small in water consumption, simple in structure, low in cost and wide in dust falling range.

The present application relates to the technical field of kidney disease hemodialysis diagnosis and treatment equipment, and discloses a precise liquid control treatment equipment for hemodialysis, which solves the problem that residual waste liquid in a waste liquid pipeline is prone to dripping and causing pollution when a waste liquid collecting box is disassembled and internal waste liquid is poured out, and comprises a dialysis host, a dialyzer fixedly installed on the top of the dialysis host, a side box fixedly installed on the side of the dialysis host, a collecting mechanism arranged on the side box, a supporting mechanism arranged on the collecting mechanism, a waste liquid outlet pipe fixedly connected to the outside of the dialyzer, the bottom end of the waste liquid outlet pipe extending into the side box, and a liquid collecting box arranged in the side box; when the collecting box is disassembled from the side box, the liquid collecting box can be rotated under the action of the elastic force of two springs, so that the opening of the liquid collecting box faces upward to catch the residual waste liquid dripping from the waste liquid outlet pipe, and the problem that the residual waste liquid in the waste liquid outlet pipe drips and causes pollution is effectively avoided.

The invention discloses a beneficiation process for beneficiation and recovery of scheelite and fluorite from argillized tungsten polymetallic ore. The beneficiation process sequentially comprises the steps of magnetite removal, low-intensity magnetic separation mineral removal, sulphide ore removal through acidification, scheelite-fluorite mixed concentration and centrifugal separation to obtain scheelite concentrate and fluorite concentrate. By adopting magnetic separation and flotation operation, corrosion to equipment can be reduced, meanwhile, the grade and the recovery rate of the scheelite concentrate and the fluorite can be improved, and under the condition that the strong magnetic tailings contain 0.34% of tungsten and 25.65% of fluorite, the scheelite concentrate with the tungsten content of 17.96% and the accumulative recovery rate of 20.42% can be obtained through tests; the content of fluorite in the fluorite concentrate is 77.86%, and the accumulative recovery rate is 47.72%.

Embodiments of the present application disclose a kind of image saliency detection method and device.The method comprises: obtaining the image to be detected and the image saliency detection model that has been trained, wherein the image saliency detection model includes high resolution path and low resolution path, high resolution path includes first convolution module and second convolution module, and low resolution path includes third convolution module;The high-resolution feature map of the image to be detected is input to the first convolution module, and the high-resolution feature map is processed to obtain the low-resolution feature map;High-resolution feature map is input to the second convolution module to obtain high-resolution path graph, and low-resolution feature map is input to the third convolution module to obtain low-resolution path graph;High-resolution path graph and low-resolution path graph are fused to obtain the result graph for representing the salient target detected from the image to be detected.The technical scheme of the embodiment of the present application can realize high-precision image saliency detection.

The utility model relates to cable installation technical field, concretely is a kind of cable head explosion-proof shell quick installation device, including two shell bodies, shell groove is established in the outer wall center of two shell bodies, and the inside of two shell body grooves is installed with fixed component, and fixed component includes collar, fixed plate and rotating block, two collars are located at the outer wall of two shell bodies respectively, and two fixed plates are fixedly installed at the both ends of collar, and inner cavity is established in the shell body, and the inside of inner cavity is provided with limit component, in the utility model, cable can be placed in the middle of two shell bodies, two shell bodies can make cable seal in shell body interior by positioning block and positioning groove, two collars are placed at the both ends of shell body respectively, by rotating threaded rod, make threaded rod embed in the inner plate groove of another collar, and then tighten the nut, the installation work of shell body can be completed.

This invention relates to the field of medical data processing technology, specifically to a deep learning-based method for predicting adolescent anxiety. The method includes: quantifying gut microbiota characteristics, anxiety behavior characteristics, and environmental stress characteristics; calculating time-series weighting coefficients; integrating gut microbiota characteristics, anxiety behavior characteristics, environmental stress characteristics, and time-series weighting coefficients into a model; and outputting the prediction results. This invention fills the gap in dynamic biomarker modeling in existing anxiety disorder models by integrating research on the human gut microbiota with existing behavioral and environmental factors. Through deep learning, it seeks the long-term relationship between adolescent gut microbiota and anxiety symptoms, addressing the subjectivity, invasiveness, privacy risks, cost, and delays in existing anxiety disorder diagnosis, thus enabling early prevention. It also provides causal evidence for the "gut-brain axis" theory in adolescents, promoting the development of psychomicrobiome research.

The present invention relates to the field of data security maintenance technology, and in particular to a data security maintenance optimization method and system based on data analysis. The method comprises the following steps: obtaining data analysis authority; extracting data to be analyzed according to the data analysis authority to generate data to be analyzed; performing data splitting processing on the data to be analyzed to generate split data; performing data abnormal behavior analysis on the split data to generate abnormal behavior data; performing abnormal flow analysis on the data to be analyzed according to the abnormal behavior data to obtain abnormal flow data; performing abnormal flow isolation and division processing on the abnormal flow data to generate abnormal flow isolation data; designing an abnormal data blocking strategy based on the abnormal flow isolation data; transmitting the abnormal data blocking strategy to the terminal to perform data security maintenance optimization. The present invention can achieve overall optimization and maintenance of data security.

The invention discloses an anti-corrosion method for flaw detection of a medium-thickness steel plate. Domestic water and a water-based anti-rust solution are mixed to serve as a coupling agent for flaw detection to be sprayed on the steel plate; after flaw detection is completed, a wear-resistant scraping plate is tightly attached to the surface of the flaw detection plate, and the coupling agent is scraped; and in the process of transferring the flaw detection plate from the cooling bed to the side conveying ground roller, the flaw detection plate is kept in an inclined posture. The problem that an existing medium-thickness steel plate is prone to rusting after being subjected to flaw detection by using domestic water as a coupling agent is solved.

This utility model discloses a spiral-guided heated cigarette, belonging to the field of heated cigarette technology. It includes a smoke-generating carrier, with a hollow core on its inner side and a first covering layer on its outer side. A guide is provided at one end of the hollow core, and a spiral guide is provided at the other end. The spiral guide includes a spiral cooling structure and circular plates. Circular plates are provided at both ends of the spiral cooling structure, with a plurality of circular holes spaced apart on the circular plates. A second covering layer is provided on the outer side of the spiral cooling structure. This design increases the flow path of the smoke, allowing for thorough mixing during flow, ensuring good taste, and effectively cooling the smoke during flow to bring it to a suitable temperature before it enters the body, preventing harm.

A razor blade with a novel tooth structure includes a blade body having a cutting section. The cutting section has a plurality of spaced-apart cutting teeth, including closed teeth and open teeth, which are spaced apart. The closed teeth protrude towards the side away from the center of the cutting section to form tooth protrusions, and the tooth protrusions are partially recessed to form tooth protrusion grooves. By forming tooth protrusion grooves through the partial recesses on the tooth protrusions, the surface of the tooth protrusions forms an uneven structure. This structure allows the portion of the tooth protrusions near the edge of the tooth protrusion grooves to lift the hair close to the skin during contact with hair, making it easier for these hairs to be captured by the subsequent cutting action, thereby improving shaving efficiency.

This utility model relates to the field of fishing equipment technology and discloses a deep-sea intelligent fishing net for freshwater fish in lakes. It includes a fishing net placed underwater and a fixed base embedded on the shore. A winch is fixedly installed on the top of the fixed base, and a take-up rope is wound around the outside of the winch's take-up roller. Fixed rings are fixedly installed at the four corners of the top side of the fishing net, and ropes are fixedly installed on the top of the fixed rings. A connecting seat is fixedly installed at the other end of the ropes. A gathering component for lifting the fishing net above the water surface is provided on the outside of the ropes. Starting the servo motor drives the main pulley to rotate, which in turn drives the secondary pulley to rotate via the transmission belt. This causes the gears to roll along the outside of the ropes, moving the entire outer shell closer to the fishing net. Simultaneously, the buoyancy of the main float and side floats further lifts the fishing net upwards, facilitating the harvesting of adult fish and improving harvesting efficiency.

The present application provides a valve stent and a prosthetic valve having the same, and belongs to the technical field of cardiac valves. The valve stent comprises a stent body, a positioning ring and elastic connection wires, wherein the positioning ring in a compressed state is adapted to be arranged in series with the stent body sequentially along an axis thereof, and when the positioning ring has elastically deformed from the compressed state to a propped open state, the positioning ring becomes coaxially sleeved on the stent body due to traction of the elastic connection wire. In the valve stent of the present application, after being implanted, the positioning ring can automatically expand to reach the propped open state by elastic deformation, and due to the traction of the elastic connection wire, the positioning ring can become coaxially sleeved on the stent body. Therefore, in the process of an implanting surgery, the positioning ring and the stent body can be positioned at the same time. Due to the traction of the connection wire, the stent body can be automatically positioned according to the location of the positioning ring, so that respective positioning operations of the positioning ring and the stent body are dispensed with, and the surgery operation can be made simple and convenient.