868results about How to "Spread evenly" patented technology

The invention relates to the field of ecological environment restoration, in particular to a reseeding device for grassland ecological restoration, which comprises a vehicle body, a driving unit, a monitoring unit, a reseeding unit and a soil covering unit are mounted at the bottom of the vehicle body, and the driving unit comprises a first driving part; the reseeding unit comprises a plowing assembly and a seeding assembly, the plowing assembly comprises a shell, the shell is connected with a first driving piece, an opening is formed in the shell, a locking piece is installed at the opening, a plough claw is hinged to the shell, a sleeve is hinged to the plough claw through a connecting rod, and an eccentric roller is embedded in the sleeve; the sowing assembly is installed in the vehicle body, a sowing opening is formed in the bottom of the vehicle body and provided with a sealing cover, the sealing cover is provided with a power piece and a triggering assembly, the triggering assembly is in signal connection with a controller, and the monitoring unit, the first driving piece, the locking piece and the power piece are all in signal connection with the controller. By monitoring the ecological condition of the grassland and automatically turning up and sowing grass seeds according to the real-time monitoring data, the damaged grassland ecology is efficiently and accurately restored.

The invention relates to the technical field of electric heating materials, in particular to a temperature-controllable electric heating compound and a preparation method thereof. The invention provides a temperature-controllable electric heating compound which comprises a composite heating layer, a packaging insulating layer and a copper foil electrode clamped between the composite heating layer and the packaging insulating layer, a matrix insulating layer is arranged below the composite heating layer, and a series of regularly arranged circular holes are formed in the composite heating layer; and the packaging insulating layer packages the copper foil electrode and the composite heating layer on the substrate insulating layer. The composite heating layer is provided with a series of regularly arranged circular holes, so that the temperature distribution is more uniform, and the accuracy of temperature control can be improved. The supporting performance, the fatigue resistance and the bending resistance are achieved, and the risk of electric breakdown is reduced. Therefore, the method has a wide market application prospect. Meanwhile, the invention further provides a preparation method of the temperature-controllable electric heating compound, and the preparation method is simple in step, convenient to operate and suitable for large-scale industrial production.

The invention relates to the technical field of asphalt concrete paving, in particular to a large-thickness paving device for large-particle-size permeable asphalt concrete.The large-thickness paving device comprises a box body, the bottom of the box body is obliquely arranged, a shell is fixedly installed at the rear end of the box body, and a rectangular hole communicating with the interior of the shell is formed in the side wall of the box body; a rotating shaft is horizontally and rotatably installed in the shell, auger blades are symmetrically and fixedly connected to the rotating shaft in a sleeving mode, a plurality of discharging openings communicated with the interior of the shell are formed in the lower surface of the shell, a driving shaft is rotatably installed at the upper end of the shell, and a driving motor is fixedly installed at the upper end of the shell. An output shaft of the driving motor is fixedly connected with the driving shaft, and a transmission assembly used for driving the rotating shaft to rotate is arranged on the shell. Due to the arrangement of the multiple discharging openings, asphalt concrete can be uniformly paved on a pavement, after the pavement is ironed and compacted, the compactness and flatness of the pavement are guaranteed, and the overall quality of the pavement is effectively improved.

The invention belongs to the technical field of agricultural machinery, and discloses a wheat planting fertilizing device which comprises a bracket, and a plurality of traveling wheels are arranged on the bracket; a regulation and control assembly is arranged at an outlet in the bottom end of the fertilizer hopper; the material distribution assembly comprises a material distribution channel arranged at the bottom end of the fertilizer hopper, and the regulation and control assembly extends into the material distribution channel; a spiral material guide rod is rotationally connected into the material distribution channel and is in transmission connection with the walking wheels; the material dispersing assembly comprises a material dispersing plate which is in rotary transmission connection with the bottom end of the spiral material guide rod, and the fertilizer conveyed by the spiral material guide rod falls on the material dispersing plate and is thrown away for material dispersing; the tail plate is rotationally arranged at the tail end of the bracket and is used for shaking wheat plants and sweeping off the fertilizer falling on the plants. The device is simple in structure and convenient to use, can automatically control the fertilization efficiency, and is suitable for the fertilization requirements of wheat in different growth periods; the fertilizer can be uniformly spread during fertilization, so that the uniformity of fertilizer distribution in the fertilization process is improved, the fertilization effect is improved, and the yield of wheat is increased.

The invention discloses an injection molding device for holiday lamp shell production, and relates to the technical field of injection molding, the injection molding device comprises a left case, a right case, a mounting gear ring, a hollow gear, a plurality of outer modules, a plurality of inner modules, a synchronous driving unit, at least one injection molding machine and a water cooling assembly, the hollow gear is arranged in the right case, the outer modules are arranged on the mounting gear ring, the inner modules are arranged on the hollow gear, the synchronous driving unit is mounted at the upper end of the left case and the upper end of the right case, and at least one injection molding machine and water cooling assembly is arranged in the left case. After the injection molding machine injects plastic into one injection molding cavity, the water cooling assembly cools the injection molding cavity, after cooling is completed, the synchronous driving unit drives the injection molding cavity to rotate, the outer module and the inner module are rotated to other positions for demolding, the next injection molding cavity is promoted to start injection molding rapidly, and the working efficiency of the injection molding device is improved.

The invention discloses a sludge low-temperature oxidation treatment system and method. The system comprises a pretreatment unit, a feed lifting mechanism, a low-temperature oxidation furnace, a flue gas purification unit and an automatic control unit. The low-temperature oxidation furnace is divided into a feeding area, a low-temperature oxidation area and an air distribution and slag discharge area from top to bottom, an air distribution plate is provided with air outlets which are uniformly arrayed, the temperature of the low-temperature oxidation area is controlled to be 420-480 DEG C, and generation of dioxin is inhibited from the source. The pretreatment unit is used for mixing sludge, biomass and quartz sand to form a loose breathable material to prevent the sludge from hardening; the method comprises the steps of material mixing, continuous feeding oxidation, temperature closed-loop regulation and control, flue gas purification and ash treatment, high-water-content municipal sludge can be stably treated, the energy consumption is low, the dioxin generation amount is low, flue gas emission reaches the standard, ash can be recycled, and the method is suitable for large-scale municipal sludge harmless treatment.

The invention relates to the technical field of daily chemicals, in particular to a mousse type sunscreen cosmetic composition and a preparation method thereof. The composition is prepared from a solvent, a sun-screening agent, a humectant, a filling agent, an emulsifying agent, an emollient, a preservative, a skin protecting agent, a thickening agent, an antioxidant and a pH regulator. The mousse texture sun-screening agent provided by the invention is very light, and does not bring heavy or sticky feeling to the skin when being used, so that the skin feels natural and comfortable. The product has a light covering feeling on the skin, does not block pores, and is suitable for being used in hot weather or during sports. The mousse texture has good ductility, can be quickly and uniformly spread on the skin, does not need excessive friction, and reduces sunscreen dead angles caused by non-uniform smearing. The mousse is generally smooth in texture, suitable for being smeared in a large area and capable of conveniently and rapidly covering the whole body such as arms, legs and the back.

The utility model belongs to the technical field of crop fertilization, and discloses a fertilization device for agricultural planting. Comprising a driving vehicle, moving wheels are rotatably connected to the bottom of the driving vehicle, a rotating motor is started to drive a rotating rod to rotate, the rotating rod rotates to drive a reciprocating lead screw to rotate, and meanwhile a ball nut, a connecting rod and a paving plate are driven to reciprocate together; the fertilizer can be uniformly spread at the bottom of the fertilizer box, so that the fertilizer can be uniformly scattered, a plurality of groups of round holes are formed in one side of a spreading plate, the small-particle fertilizer can conveniently penetrate through the spreading plate when the spreading plate moves, the spreading treatment of the fertilizer is more facilitated, and four groups of reciprocating lead screws, ball nuts, connecting rods and the spreading plate operate together, so that the fertilizer can be uniformly spread at the bottom of the spreading plate. The fertilizer in the fertilizer box can be uniformly spread, so that the fertilization is more uniform, and the problem that the fertilizer is easily accumulated in one place during fertilization is solved.

The utility model provides a dosing device for sewage treatment, which belongs to the field of sewage treatment equipment and comprises two sliding rails, the two sliding rails are respectively mounted at two ends of the top surface of a sewage pool, sliding frames are arranged on the top surfaces of the two sliding rails, a supporting plate is fixed between the two sliding frames, and the supporting plate is fixed on the sliding rails. And a liquid storage tank is fixedly mounted in the middle of the supporting plate. According to the chemical dosing device, during chemical dosing, the stirring motor is controlled to rotate to drive the transmission rod to rotate in the liquid storage tank, the transmission rod rotates to drive the stirring blades fixedly mounted at the bottom to rotate along with the transmission rod, and the stirring blades rotate to drive chemical liquid in the liquid storage tank to be uniformly mixed, so that the chemical liquid is prevented from standing and precipitating to influence the sewage treatment effect; the driving motor drives the pulleys on the two sides of the sliding frame to slide on the sliding rails, so that the dosing nozzle is driven to move along the sewage pool for dosing, and the liquid medicine can be uniformly injected into the sewage pool.

The invention discloses detection test paper which comprises a bottom plate, a sample adding area and a color developing area, and further comprises a transfer layer for conveying a liquid sample from the sample adding area to the color developing area, the transfer layer comprises a free section and a fixed section, and a supporting element is arranged below the transfer layer, so that the free section of the transfer layer is not adhered to the bottom plate; the fixed section of the transfer layer is fixedly connected to the bottom plate, and at least one part of the free section is inserted into a first gap between the enzyme layer and the bottom plate and partially contacts with the lower surface of the enzyme layer. The test paper disclosed by the invention is simple in structure and small in size, can be detected at any time along with a portable analyzer, can quickly and accurately obtain a test result, and is small in detection performance difference, good in consistency of the detection result and high in accuracy.

The invention relates to degradable ceramic body mud and a manufacturing method thereof, and belongs to the technical field of ceramics. Comprising the following steps: grinding, crushing and sieving calcined talc, wollastonite, phlogopite and yttria-stabilized zirconia, adding stearic acid and a carboxymethyl chitosan solution, carrying out ball-milling mixing, adding polyhydroxy citronellal and absolute ethyl alcohol in a nitrogen atmosphere, carrying out constant-temperature stirring, filtering out a solvent, drying, adding isobutanol and an aluminum-zirconium coupling agent, continuously stirring, and carrying out vacuum drying to obtain the modified yttria-stabilized zirconia ceramic. And filtering, washing, carrying out vacuum drying, adding a binder and deionized water, stirring, standing, carrying out compression molding, carrying out vacuum drying, and calcining. Polyvinyl alcohol is selected as a green binder, the excellent binding characteristic of the polyvinyl alcohol enhances the forming efficiency of the slurry, the slurry is harmless to the environment, polyhydroxy citronellal and carboxymethyl chitosan enhance the modification and uniform dispersion of the stone surface, and then the microstructure of the material is improved. And the environment-friendly dispersing agent and the binder are added, so that the environmental pollution is reduced, and the performance and green ecology are improved.

The invention belongs to the technical field of wafer processing, and particularly relates to a high-pressure liquid environment laser splinter crystal ingot separation method and device. And placing the crystal ingot in high-pressure liquid for ultrasonic treatment. And placing the crystal ingot subjected to laser splintering treatment in high-pressure liquid, and promoting microcracks generated by splintering of the crystal ingot to expand under the action of ultrasonic waves so as to complete wafer separation. The high-pressure liquid environment provides higher energy transfer efficiency, the cavitation effect of ultrasonic waves is enhanced, and the wafer separation efficiency is improved. Besides, in a high-pressure liquid environment, after liquid permeates into the crack, energy can be uniformly applied to the starting point and the end part of the crack in combination with the action of ultrasonic waves, so that the crack is more uniformly expanded; the uniform expansion not only improves the splitting effect, but also improves the overall separation quality of the wafer. By integrating the effects, the method has a good application prospect in the technical field of wafer processing.

The invention discloses a copper wire gold plating treatment process, which belongs to the technical field of integrated circuits. The process comprises the following steps: performing surface cleaning treatment on a palladium-plated copper wire and then immersing the wire in a gold plating solution for gold plating treatment to obtain a gold-plated palladium copper wire; drawing and thinning the gold-plated palladium copper wire to a preset diameter, and then sequentially performing annealing treatment and surface cleaning treatment to obtain the gold-plated palladium copper wire; the gold plating solution comprises a leveler, the leveler takes a polyhydroxy spirobiindene rigid structure as a skeleton, and uses a Mannich reaction to graft 3-hydroxypiperidine with aminomethyl at the α active hydrogen position of the skeleton, and then introduces bromine atoms into the skeleton through a bromination reaction and derives them into a boric acid pinacol ester group, and finally introduces a dithiophene benzothiadiazole structure into the skeleton through a Suzuki coupling reaction to obtain the gold-plated palladium copper wire; the invention adds the leveler into the gold plating solution to improve the bonding strength and flatness of the coating so as to meet the copper wire bonding packaging requirements.

The utility model discloses an inserting device of a ton barrel metal frame, which belongs to the field of ton barrel frame processing, and comprises a working table, a pipe pitch adjusting mechanism is arranged on the top surface of the working table, and the pipe pitch adjusting mechanism comprises a hydraulic cylinder fixedly connected to the top surface of the working table. The hydraulic cylinder is fixedly connected with one side of the fixing plate, the telescopic end of the hydraulic cylinder is fixedly connected with a movable sliding rail, an inner groove of the movable sliding rail is slidably connected with a plurality of limiting blocks, a plurality of limiting grooves are formed in the top end of the fixing plate in a penetrating mode, and the limiting blocks are slidably connected with the limiting grooves respectively. The ends, away from the movable sliding rails, of the limiting blocks are fixedly connected with telescopic rods, the sides, away from the movable sliding rails, of the telescopic rods are fixedly connected with mounting frames, and the functions of rapidly adjusting the distance between the steel pipes and improving the equipment inserting effect can be achieved.

The utility model discloses a punch forming die for a powder metallurgy component, which relates to the technical field of powder metallurgy, comprises a bottom plate, an upper die and a lower die, and is characterized in that two groups of supporting rods are symmetrically and fixedly arranged on the upper surface of the bottom plate, a top plate is fixedly connected through the two groups of supporting rods, and the lower die is arranged on the upper surface of the bottom plate. A motor is fixedly arranged on the upper surface of the bottom plate, the output end of the motor is fixedly connected with a first lead screw, the rod wall of the other end of the first lead screw is rotationally connected with the top plate, and the rod wall of the lower end of the first lead screw is fixedly sleeved with a cam. Through the arrangement of the knocking rod and the cam, the cam can be driven to rotate in the rotating process of the first lead screw, and the knocking rod can be driven to drive the rubber hammer head to knock the lower die in the rotating process of the cam, so that powder can be uniformly spread in the lower die before stamping; and after stamping is completed, the product can be loosened through knocking, so that the formed product can be taken out conveniently.

The utility model is suitable for the technical field of adhesive tape processing, and provides an adhesive tape processing smearing device which comprises a supporting frame. The multiple guide shafts are all rotationally installed on the supporting frame, and the guide shafts are used for supporting an adhesive tape; the cooling pipe is rotationally mounted on the supporting frame, and the cooling pipe is used for cooling the viscose; the glue storage box is installed on the supporting frame, and a temperature increasing assembly used for heating glue is installed in the glue storage box; the rubber discharging device is mounted on the supporting frame, and the rubber discharging device can be in contact with a rubber belt. According to the smearing device for adhesive tape processing, redundant glue can be scraped after glue is smeared, so that the quality of the adhesive tape can be guaranteed, meanwhile, whether glue discharging is normal or not can be known according to the amount of scraped waste glue, and personnel can conveniently conduct adjustment and treatment in time.

The invention relates to the technical field of material brazing, and provides a welding method for quartz glass, which comprises the following steps: preparing nano-silver paste; coating the nano-silver paste on the bonding surface of the quartz glass and the material to be connected; the bonding surface of the quartz glass and the bonding surface of the to-be-connected material are in contact and abut against each other, and the nano-silver paste is melted to form a welding joint; and cooling the welding joint, the quartz glass and the material to be connected. According to the welding method for the quartz glass, the connecting strength between the quartz glass and the to-be-connected material can be improved, and the situation that the quartz glass cracks is reduced.

The manufacturing method of the grinding disc comprises the following steps: preparing a grinding disc material: uniformly mixing and stirring abrasive particles and a composite adhesive to obtain the grinding disc material; and drying the grinding disc material, pressing a die, heating and pressurizing, fixing and forming, and sintering at a preset temperature to obtain the grinding disc, wherein the abrasive particles comprise ceramic abrasive particles and diamond abrasive particles, and the ceramic abrasive particles and the diamond abrasive particles are mixed according to the weight ratio of 9.4: 0.6 to 9.6: 0.4. The grinding disc manufactured through the method is uniform in grinding material distribution, good in grinding effect and stable in performance, so that the product consistency is guaranteed, meanwhile, the manufacturing cost is low, and the manufacturing efficiency is high.

The invention discloses an evaporative crystallization device based on high-concentration wastewater and a zero discharge process, and relates to the technical field of wastewater treatment.The evaporative crystallization device based on the high-concentration wastewater comprises an evaporation tank, and a drainage device is arranged in the evaporation tank; the flow guide device comprises a heat conduction inner barrel fixed in the evaporation tank, an inner ring channel formed in the center of the heat conduction inner barrel, a flow guide pipe fixed in the inner ring channel and a plurality of groups of outer ring channels formed in the heat conduction inner barrel, and the plurality of groups of outer ring channels are sequentially formed from inside to outside by taking the inner ring channel as the center; first water outlets which are arranged up and down are formed between the inner ring channel and the adjacent outer ring channel, and second water outlets are formed between the other outer ring channels. By arranging the drainage device, when entering the evaporation tank, wastewater can sequentially pass through the multiple groups of outer ring channels along the inner ring channel in an S-shaped trend so as to diffuse and flow towards the periphery, so that disorder and stagnation of flow in a traditional system are avoided, and continuous flowability of the wastewater is ensured.

The invention discloses a deep sea aquaculture net cage which comprises a buoyancy pedal, a plurality of air bags are arranged at the bottom of the buoyancy pedal and used for providing buoyancy and adjusting the height of the buoyancy pedal; the buoyancy ring is arranged at the bottom of the buoyancy pedal, a fishing net is fixedly connected to the bottom of the buoyancy ring, a bottom net is fixedly connected to the bottom of the fishing net, and a screening net is arranged in the bottom net in a lifting mode and used for shortening the height of the fishing net and screening fishes; by arranging a cleaning ring and a knocking rod, the rope can be cleaned when the rope is wound, impurities such as salt and seaweed can be removed, sounds can be generated by knocking a bell disc, fish schools can be repelled, and the screening efficiency is improved; due to the reciprocating motion of the first sliding block and the second sliding block, ordered arrangement of the ropes is ensured, the knotting phenomenon is prevented, and the service life of the ropes is prolonged; by arranging the feed scattering assembly, uniform scattering of fish feed is achieved, waste is reduced, and the utilization rate of the feed is increased.

The invention provides an AGV vehicle-mounted snow melting device and a path planning method, and belongs to the field of automatic wharf automatic guided vehicle equipment application and vehicle navigation, a path planning information input unit is used for providing coordinate information, AGV spreader gear information and spreading range information for a snow melting agent spreading map unit, and updating snow melting agent spreading map information in real time; an AGV path planning unit plans an AGV driving snow melting path according to the starting place and the destination of snow melting; the AGV navigation unit controls the AGV to run according to the AGV traveling snow melting path; the snow-melting agent spreading map unit is used for recording actual position information and driving path information, and recording a snow-melting agent spreading amount and a snow-melting agent spreading amount threshold value at the same time; the remote operation unit is used for receiving a driving control instruction sent by a user through the handheld terminal, controlling the spreading amount of the snow-melting agent and adjusting the spreading range; according to the invention, the snow-melting agent can be spread on the snow and ice accumulated road surface based on the operation of the AGV to realize snow melting and ice melting, so that the snow melting efficiency is higher and the snow melting is more intelligent.

The invention discloses a preparation method of a Ni3Sn superconducting wire based on 3D printing. The preparation method comprises the following steps: depositing a reticular niobium film on the surface of a tin-titanium alloy rod through 3D printing to obtain a tin-titanium-niobium alloy rod; drilling a hole in the center of the tin-titanium-niobium alloy rod, and inserting a tin-silver alloy rod to obtain the tin-titanium-niobium-silver alloy rod; the tin-titanium-niobium-silver alloy bar is put into the Ni3Sn-copper-niobium composite tube, and then an internal tin method Ni3Sn sub-component is obtained; sequentially putting the internal tin method Ni3Sn subcomponents into the tantalum tube and the oxygen-free copper tube to obtain an internal tin method Ni3Sn blank; and stretching the inner tin method Ni3Sn blank to obtain the Ni3Sn superconducting wire. Due to the existence of the silver element, uniform diffusion of the tin element in the heat treatment process is facilitated, the netted niobium film is deposited on the surface of the tin-titanium alloy rod through 3D printing, the precision and quality of the niobium film are guaranteed, more high-quality Ni3Sn crystal grains can be generated in the heat treatment process of the wire, and the performance of the Ni3Sn wire prepared through the internal tin method is improved.

The invention discloses a battery fire extinguishing agent and a preparation method and application thereof. Preparation raw materials of the battery fire extinguishing agent comprise water, hydrated salts and auxiliary materials, the auxiliary materials comprise at least one of nano-particles or an organic binder, and the mass fraction of the hydrated salts in the preparation raw materials is 10%-80%. The battery fire extinguishing agent contains high-concentration hydrated salts, can effectively inhibit the occurrence of membrane boiling, and can interact with the nanoparticles and the organic binder to remarkably improve the fire extinguishing capacity and the cooling effect of the fire extinguishing agent.

The invention discloses a floating type feeding device for indoor fry breeding, relates to the field of fry feeding, and solves the problem that an existing fry feeding device is prone to causing uneven feeding. The floating type feeding device comprises a mounting support and a floating air cushion mounted at the bottom of the mounting support, and an electric push rod frame is fixedly mounted at the top of the mounting support; a positioning frame is fixedly mounted at the bottom of the moving end of the electric push rod frame, a feeding cylinder is arranged at the bottom of the positioning frame, and two injection hoppers are fixedly mounted at the top of the feeding cylinder; the feeding mechanism is used for enabling the feeding cylinder to uniformly feed materials, and the feeding mechanism is mounted between the feeding cylinder and the positioning frame; by means of the feeding mechanism, the floating air cushion can float on the water surface of the breeding room, the feeding cylinder is aligned with the water surface, the placement convenience of the feeding cylinder is improved, when the electric push rod frame operates, the feeding cylinder can evenly feed fish food into water, and therefore the effect of even feeding is achieved.

The present invention discloses a catalyst carrier mesh belt kiln, which belongs to the technical field of mesh belt kilns, including a kiln body, an inner cavity of the kiln body is provided with a conveyor mesh belt, and power is provided between the conveyor mesh belt and the kiln body through a magnetic conductive mechanism, a pushing mechanism for pushing the catalyst material is provided on the top of the conveyor mesh belt, and a spreading mechanism for spreading the catalyst material is provided on the side of the pushing mechanism. The present invention sets a magnetic conductive mechanism and utilizes the application of magnetic power-on technology to achieve rapid switching of the connection and disconnection of the circuit, and at the same time sets the conveyor mesh belt in a segmented connection mode, and powers on through the mutual magnetic connection of the first magnetic block and the second magnetic block, and powers on the conveyor mesh belts currently connected separately through the heat conductive block, so that the catalyst at the current position can be roasted or dried, and the problem of excessive accumulation of catalysts, resulting in excessive volume and affecting the roasting or drying effect can be avoided.

The utility model relates to the technical field of keyboard backlight modules, in particular to a MINI keyboard backlight module, and solves the technical problems that the whole FPC (Flexible Printed Circuit) manufacturing process of the backlight module in the market in the prior art is relatively complicated, so that the whole cost of the keyboard backlight module is increased when a whole FPC lamp panel is used, and the manufacturing cost of the keyboard backlight module is increased. Meanwhile, the whole FPC lamp panel is limited by the size of production equipment in the manufacturing process, so that the length and the width of the FPC lamp panel can not meet the requirements of certain specific applications, and the practicability of the keyboard backlight module is low. The MINI keyboard backlight module comprises a shading film, a light guide plate, a reflecting film and a lamp panel which are sequentially arranged from top to bottom, the shading film is located on a pattern part on the surface of the light guide plate, the shading film is matched with the reflecting film in boundary dimension, and the lamp panel is arranged at the bottom of the reflecting film. According to the utility model, the effects of reducing the cost and improving the brightness are achieved, and the requirements of some specific applications are met. And the design flexibility and expandability of the keyboard backlight module are improved.

The invention discloses an unmanned aerial vehicle obstacle avoidance method, system and device based on reinforcement learning and differential programming and a medium. The obstacle avoidance method comprises the following steps: constructing an unmanned aerial vehicle state matrix s; constructing a task neural network module, and obtaining an expected flight vector fexp of the unmanned aerial vehicle according to the unmanned aerial vehicle state matrix s; constructing a differentiable safety module, correcting an expected flight vector fexp of the unmanned aerial vehicle according to the obstacle position, and obtaining an actual flight direction vector ffly of the unmanned aerial vehicle; the task neural network module and the differentiable safety module are combined in a mode that the task neural network module is in front of the differentiable safety module, an unmanned aerial vehicle obstacle avoidance strategy network is constructed, an unmanned aerial vehicle simulation flight environment is established, the unmanned aerial vehicle obstacle avoidance strategy network is trained, and an available unmanned aerial vehicle obstacle avoidance strategy is obtained; the system, the device and the medium are used for bearing and implementing the method. Safe flight of the unmanned aerial vehicle is achieved in the simulation environment, the advantages of an intelligent algorithm and a traditional obstacle avoidance algorithm are integrated, and therefore the safety of the unmanned aerial vehicle in the task execution process is improved.

The invention relates to the field of anode conversion film voltage withstanding performance testing, in particular to an anode conversion film voltage withstanding performance testing device and method. Comprising a temperature control box, a pressurizing mechanism and an optical microscope, a pressure measuring platform is further arranged in the temperature control box, the pressurizing mechanism comprises a pressing disc and a pressurizing driving assembly, and the pressurizing mechanism further comprises a rubber pressing sleeve fixedly arranged on the pressing disc in a sleeving mode and an expanding assembly capable of expanding the rubber pressing sleeve. And a pressure maintaining structure for avoiding insufficient contact between the rubber pressing sleeve and the sample is arranged in the rubber pressing sleeve. The rubber pressing sleeve is driven by the expansion assembly to deform, so that the rubber pressing sleeve is synchronously expanded in multiple directions to ensure that the whole sample is uniformly pressed, and meanwhile, the pressure maintaining structure is started, so that the condition that the rubber pressing sleeve and the sample are insufficiently contacted is avoided, and the pressure uniformity is further improved.

The invention discloses falling film evaporation equipment, and relates to the technical field of falling film evaporation, and the falling film evaporation equipment comprises a rotating mechanism. According to the falling film evaporation equipment, through the design of the rotating mechanism, after liquid enters from the feeding port, the liquid washes the blades, the stress area of the blades to the liquid is increased, so that the effect of enlarging the rotating effect is achieved, the blades drive the rotating shaft to rotate, and the square plate is driven to rotate in the rotating process of the rotating shaft; the liquid flowing range is increased by stirring the liquid, so that the liquid flowing uniformity is improved, then the square notches are formed, the resistance borne by the square plates during rotation in the fluid is reduced through the open grooves, the energy consumption is reduced, and the uniform mixing of the materials is promoted; the stirring efficiency and quality are improved, the space with liquid is increased, and liquid attachment residues are reduced.

The invention relates to the field of microbial organic fertilizer preparation, and discloses a microbial organic fertilizer preparation device, which comprises a fermentation component, a stirring component, a stirring component and a stirring component, the turning and stirring part comprises a mixing assembly, and a transmission assembly is arranged at the top of the mixing assembly; the mixing assembly is used for turning over the fermented compost in the fermentation part, and the transmission assembly can flatten the top of the fermented compost turned over by the mixing assembly; the mixing assembly comprises a transverse turning and stirring shaft rotationally connected with the transmission assembly, and the transmission assembly comprises a first transmission gear in meshed connection with the fermentation component. Under the cooperative operation of the turning and stirring component and the fermentation component, the microbial organic fermentation fertilizer can be subjected to comprehensive turning and temperature adjustment; leftover fertilizer in the fermentation tank can be turned and shoveled, and the situation that part of fertilizer cannot be normally fermented, and the fermentation quality is affected is avoided.