613results about How to "Reduce scatter" patented technology

The invention discloses a remote sensing image haze removal processing method and system, and relates to the technical field of image processing. The method comprises the steps of obtaining a to-be-processed remote sensing image; extracting wave band data of a plurality of wave bands in the remote sensing image to be processed, and determining a reference wave band and a plurality of target wave bands based on the wave band data; based on the reference wave band, determining an atmosphere illumination parameter, and calculating a transmittance distribution diagram of each target wave band; for each target wave band, carrying out haze removal processing on the target wave band according to the atmosphere illumination parameters and the transmittance distribution diagram to obtain an initial haze removal image of the target wave band; and performing fusion processing on the initial haze-removed images of the target wavebands to obtain a haze-removed image corresponding to the to-be-processed remote sensing image. By implementing the technical scheme provided by the invention, the effect of improving the accuracy of haze removal processing of the remote sensing image is achieved.

The invention relates to the field of solar cells, and discloses a solar cell, a preparation method thereof and a photovoltaic module. The first semiconductor layer and the second semiconductor layer are arranged on the silicon substrate, the first semiconductor layer is doped with N-type conductive elements, and the second semiconductor layer is doped with P-type conductive elements; the first electrode is electrically connected with the first semiconductor layer through a plurality of first conductive structures; the second electrode is electrically connected with the second semiconductor layer through a plurality of second conductive structures; wherein the density of the first conductive structure is greater than that of the second conductive structure. According to the solar cell, the carrier transmission efficiency can be improved, recombination is reduced, and scattering is reduced.

The invention relates to an AR near-to-eye display technology, in particular to a two-dimensional vector body holographic grating waveguide and a manufacturing method thereof, an AR optical module and a manufacturing method, and the method comprises the steps: fixing a holographic plate to be exposed, and building a rectangular coordinate system with a second surface of the holographic plate as an XOY plane; dividing the same exposure light into a first light beam and a second light beam, enabling the first light beam to vertically irradiate the first surface of the holographic plate, and enabling the second light beam to irradiate the second surface of the holographic plate at a # imgabs0 # incident angle so as to form a volume holographic grating with a first grating component; enabling the first light beam to vertically irradiate the first surface of the holographic plate, and enabling the second light beam to irradiate the second surface of the holographic plate at a # imgabs1 # incident angle to form a volume holographic grating with a second grating component; wherein the propagation direction of the orthographic projection of the volume holographic grating vector of the first grating component on the second surface and the propagation direction of the orthographic projection of the volume holographic grating vector of the second grating component on the second surface are symmetric about the X axis.

The invention discloses a multifunctional automatic laser cutting machine, and relates to the technical field of laser cutting, the multifunctional automatic laser cutting machine comprises a base, a support is fixedly mounted at the top of the base, a first motor is fixedly mounted at the top of the support, a threaded rod is fixedly mounted at the output end of the first motor, and a sleeve is in threaded connection with the threaded rod; a clamping device is arranged at the top of the base, a collecting device is arranged at the top of the base, a ventilation device is arranged at the top of the clamping device, and the clamping device comprises an electric push rod, cutting equipment, a laser head, a bevel rod, a cutting table, a clamping plate, a first bevel block, a connecting rod and a protective plate. A workpiece can be effectively fixed to the cutting table, the workpiece is prevented from moving or shaking in the laser cutting process, the cutting precision is improved, and the connecting rod moves to drive the protection plate to move.

The invention discloses a step type mine quarrying face in-situ ore moving type head section treatment process which comprises the steps that a crawler belt impact type roller crusher is arranged on a mine quarrying face in situ, and the crawler belt impact type roller crusher receives, conveys and crushes in-situ ore mined on the mine quarrying face; each crawler belt moving belt conveyor comprises a movable crawler belt driving base and a conveying belt conveyor body arranged on the crawler belt driving base, and the crawler belt moving belt conveyors are connected end to end to convey materials; the mine quarrying working face comprises a top quarrying working face arranged on the mountain top and a stepped in-mountain quarrying working face arranged on the lower portion of the mountain top. By means of the mountain height difference, the crawler belt moves the belt conveyor, so that conveyed materials roll down from a mine quarrying face towards the mountain or are directly conveyed to the downhill through the long-distance belt conveyor. According to the invention, head section crushing work and quarrying work are combined, intermediate transportation links are reduced, energy consumption is saved, cost is reduced, and flexibility and efficiency are high.

The invention relates to a scraper conveyor with a coal quantity monitoring function, and relates to the technical field of coal mining machinery, the scraper conveyor comprises a rack, a driving assembly, a monitoring assembly and a flattening assembly, the rack is rotatably connected with a plurality of rotating rollers, the plurality of rotating rollers are uniformly arranged in the conveying direction of the rack, and the plurality of rotating rollers are jointly sleeved with a conveying belt; the driving assembly is arranged on the rack and used for driving the conveying belt to rotate. The monitoring assembly is arranged on the rack and used for monitoring the height and gradient of a coal pile. The flattening assembly is arranged on the rack, located on the side, away from the input end of the rack, of the monitoring assembly and used for reducing the height of the coal pile. The method has the effect of improving the transportation efficiency.

The invention relates to the field of semiconductors, in particular to a heat dissipation structure, a preparation method thereof and an IGBT (Insulated Gate Bipolar Translator) module. The preparation method of the heat dissipation structure provided by the invention comprises the steps of obtaining a to-be-combined heat sink based on a blind groove formed in one surface of the heat sink in the thickness direction; laminating and laminating the metal sheet and the ceramic substrate, firing, and metalizing the ceramic substrate; patterning processing is carried out based on the surface of the metal layer in the thickness direction, so that an exposed surface is formed on the ceramic layer in the thickness direction, and a metal boss capable of being matched with the blind groove is formed on the metal layer on the exposed surface; and the metal boss on the to-be-combined substrate is installed in the blind groove of the to-be-combined heat sink, the exposed face is attached to the surface of the to-be-combined heat sink to form a combined body, the combined body is sintered and cured, and the heat dissipation structure is obtained. The heat dissipation structure prepared by the preparation method can effectively reduce the number of thermal resistance interface layers, improve the heat dissipation efficiency of the IGBT chip, and significantly reduce the production cost and the process complexity.

The invention belongs to the technical field of semiconductor devices, and particularly relates to a high-heat-dissipation GaN nanowire radio frequency device and a preparation method thereof.The radio frequency device comprises a heterogeneous bonding substrate, a bonding middle layer, an AlGaN / GaN nanowire (a GaN channel layer, an AlN insertion layer, an AlGaN barrier layer and a GaN cap layer), a passivation layer and an electrode layer, and the electrode layer comprises a source electrode, a gate electrode and a drain electrode; the passivation layer covers the gaps between the nanowires through front deposition, so that the preparation of the high-heat-dissipation nanowire transistor is realized, and the problem that the linearity of the device is reduced due to a self-heating effect is solved; holes are formed in the grid electrode, the thickness of the passivation layer on each nanowire is controlled, equal difference distribution is achieved, the linearity of the device is improved through the transconductance compensation effect, the grid voltage swing of the radio frequency device can be effectively improved, and therefore the available range of the device is greatly widened.

The invention discloses intelligent three-dimensional projection display equipment, and relates to the technical field of three-dimensional projection equipment, the intelligent three-dimensional projection display equipment comprises a shell, a base and holographic projection glass, the base is fixedly connected in the shell, the number of the holographic projection glass is four, the four pieces of holographic projection glass are fixedly connected with one another and fixedly connected to the base, and the holographic projection glass is arranged in the shell. The holographic projection equipment comprises a shell, holographic projection glass is arranged on the shell, projection equipment is arranged on the upper portion of the holographic projection glass, a display screen is fixedly connected to the outer side of the shell, an access door is hinged to the outer side, close to the display screen, of the shell, and a shielding assembly capable of shielding the projection display equipment according to light rays is installed in the shell. The problems of light reflection, color fading, blurring and the like of a projection picture are avoided, the shading cloth can reduce the influence of ambient light on projection light rays, accurate restoration of colors is ensured, and the position and the unfolding size of the shading cloth can be flexibly adjusted, so that the shading applicability is improved.

The invention relates to the field of laser cutting equipment, and discloses a laser cutting workbench for sheet metal working, which comprises a cutting platform provided with a cutting table; the thorn plates are arranged on the cutting table and used for increasing the friction force between the metal plate and the cutting table; the moving frame is arranged on the cutting table, and a plurality of conveying shafts are arranged on the moving frame; the laser cutting head is arranged on the cutting platform; the box body is arranged in the cutting platform, and the position of the box body is lower than that of the thorn plate and the moving frame; according to the laser cutting device, the design of traditional laser cutting equipment is improved, the box body and the liquid cooling system are additionally arranged, the problems of sparks and molten metal diffusion in the laser cutting process are solved, and the cutting quality and the safety of the working environment are remarkably improved.

The invention relates to the technical field of scanners, and discloses an ultra-short-focus scanning optical system which sequentially comprises a light-emitting unit, a diaphragm, a DOE lens, a rotating mirror, an F-theta lens and a selenium drum from an object plane to an image plane. The light-emitting unit emits an elliptical laser beam; the diaphragm is used for calibrating the elliptical laser beam into a diaphragm-shaped light beam; the first lens surface of the DOE lens collimates the diaphragm-shaped light beam into a parallel light beam; the second lens surface shapes the parallel light beams into linear light beams along the y-axis direction; the rotating mirror receives and changes the angle of the linear beam; the F-theta lens receives the linear light beams passing through the rotating mirror and converges the linear light beams into a circular light spot within a diffraction limit; the selenium drum converts the circular light spot focused by the F-theta lens into a printable image; by improving the curved surface type of the F-theta lens, light spots printed on the selenium drum are in central symmetry, the uniformity of the light spots in the scanning process can be improved, and the scanner is miniaturized.

The invention discloses a ceramic heat sink material and a preparation method thereof, and the preparation method comprises the following steps: S1, taking a Si-Al alloy ingot, porous C-Si3N4 and a sintering aid as raw materials, and carrying out pre-sintering to obtain a compound; and S2, carrying out spark plasma sintering treatment on the compound in a vacuum atmosphere to obtain the ceramic heat sink material, according to the preparation method, the Si-Al alloy ingot and the porous C-Si3N4 are taken as raw materials, the Si-Al alloy ingot permeates into the porous C-Si3N4 material under the heating melting condition, the composite AlN-SiC ceramic material which is uniform in phase distribution and compact is formed in situ in combination with the sintering aid, the obtained ceramic heat sink material is large in crystal grain and small in number of crystal boundaries, scattering of phonons is reduced during heat conduction, and the heat sink material has the advantages of being high in heat sink efficiency and good in heat sink performance. The heat conductivity is improved; meanwhile, the prepared ceramic heat sink material is high in grain density and uniformity, low in oxygen content in crystal lattices and moderate in impurity-phase silicon content, so that the heat conductivity is high, and the ceramic heat sink material is suitable for being used as a heat sink ceramic substrate.

The invention discloses an intelligent phototherapy hair clasp which comprises a hair clasp body, the hair clasp body is of a bent structure so as to be tightly attached to the outline of the head, and a plurality of light columns are arranged in the hair clasp body in an array mode; the light source module comprises a plurality of light sources and wavelength selection filters which are arranged in an array mode, the head of each light pillar is provided with the corresponding light source, and the output end of each light source is provided with the corresponding wavelength selection filter; the monitoring module is used for monitoring electroencephalogram data and scalp temperature data of the brain of the patient; the data acquisition module is used for acquiring the electroencephalogram data and the scalp temperature data; the microcontroller is used for processing the acquired electroencephalogram data and scalp temperature according to a preset algorithm, controlling the light source and the wavelength selection filter based on an algorithm processing result and an instruction provided by a patient, and intelligently providing corresponding treatment parameters for the patient. Therefore, a safer, more effective and more convenient treatment choice can be provided for the patient.

The invention discloses a technological method for refining oxygen-free copper plate crystal grains. The technological method comprises the following steps that an electrolytic copper plate is placed in a furnace bin to be melted, the surface of the electrolytic copper plate is covered with charcoal, semi-continuous casting billet drawing is carried out, and an oxygen-free copper cast ingot is produced; the oxygen-free copper casting blank is put into a heat preservation furnace to be preheated, the preheating temperature ranges from 800 DEG C to 900 DEG C, and the heat preservation time ranges from 2 hours to 3 hours; the preheated cast ingot is subjected to upsetting and drawing, the upsetting deformation is 50%-60%, the cast ingot is drawn to 150%-160% of the original cast ingot, and the upsetting and drawing times are 3-4 times; warm forging and square drawing are started, the warm forging temperature ranges from 700 DEG C to 750 DEG C, the cast ingot is upset to 50%-60% of the original length, square drawing is conducted to the needed blank length, and the final forging temperature is kept to be larger than or equal to 700 DEG C; the blank is cooled to the room temperature, cold forging is started, multiple passes of cold forging are conducted, the rolling reduction of each pass is 10%-15%, and the final cold forging deformation is 30%-60%; and the oxygen-free copper blank obtained after cold forging is subjected to aging heat treatment, the aging heat treatment temperature ranges from 350 DEG C to 450 DEG C, the aging heat treatment time ranges from 1 h to 2 h, air cooling is conducted after annealing, and the oxygen-free copper plate is obtained.

The invention discloses a collagen-based and high-transparency matrix for cornea thickening and a preparation method of the collagen-based and high-transparency matrix. The preparation method comprises the following steps: assembling a collagen composite solution into a collagen matrix implant on a set curvature mold through electrochemical deposition; the collagen composite solution is prepared from collagen, glacial acetic acid, hydrogen peroxide, heparin and water; putting the obtained collagen matrix implant and a mold into a cross-linking agent solution for cross-linking; cleaning the residual cross-linking agent after completion, separating the collagen matrix implant from the mold, and placing the collagen matrix implant under an ultraviolet light source for cross-linking to obtain a double-cross-linked collagen matrix implant; and soaking the double-crosslinked collagen matrix implant in a nerve growth factor solution, and performing absorption and combination to obtain the collagen-based and high-transparency matrix for cornea thickening. According to the invention, an electro-deposition assembly technical scheme is adopted, the diameter and thickness of collagen assembly fibers are adjusted and controlled through electric field energy, and the collagen assembly fibers are orderly and regularly arranged, so that scattering and refraction of light are reduced, the light transmittance of cornea is increased and can reach more than 90%, and the problem of light blocking caused by materials is effectively avoided. Operation is matched with femtosecond equipment, operation is easy, consumed time is short, and trauma is small.

The invention provides a radiation cooling and heat conducting polyether-ether-ketone composite material and a preparation method and application thereof.The preparation method of the composite material comprises the specific steps that S1, boron nitride is subjected to high-temperature calcination and furnace cooling, and hydroxyl modified boron nitride is obtained; s2, dispersing aramid staple fibers in a poor solvent, and performing high-speed shearing to form microspheres, namely aramid fiber balls; s3, uniformly mixing the aramid fiber balls obtained in S2 with polyether-ether-ketone powder, then adding the hydroxyl modified boron nitride obtained in S1, and continuously and uniformly mixing to obtain a composite material dispersion; and S4, carrying out melting and hot pressing on the composite material dispersion obtained in S3 to obtain the target polyether-ether-ketone composite material. The preparation method of the material disclosed by the invention is simple, and the prepared polyether-ether-ketone composite material shows excellent radiation cooling performance, heat-conducting property and heat stability and has a wide application prospect.

The invention provides anti-scattering water-guided laser cutting fluid as well as a preparation method and application thereof. The anti-scattering water-guided laser cutting fluid comprises the following components in parts by weight: 0.1-1 part of an anti-scattering agent; 0.01 to 0.1 part of a foam discharging agent; 1-5 parts of a refractive index regulator; and 80-99 parts of ultrapure water. The anti-scattering agent is a polymer; the foam removing agent is one or more of hydroxymethyl cellulose, hydroxy propyl cellulose, sodium lignin sulfonate, potassium lignin sulfonate and naphthalene sulfonic acid formaldehyde condensate sodium salt; the refractive index regulator is an iodine-containing compound and / or a fluorine-containing compound. According to the anti-scattering water-guided laser cutting fluid, light beam scattering and energy loss in the water-guided laser cutting process can be remarkably reduced, and the cutting precision and efficiency are improved. The anti-scattering water-guided laser cutting fluid has very good application prospects and large-scale industrial popularization potential in the field of water-guided laser cutting.

The embodiment of the invention provides a preparation method of a photoelectric biosensor and the photoelectric biosensor, and relates to the technical field of photoelectric sensing, and the preparation method comprises the following steps: preparing a biomass derived hierarchical porous carbon PBAC material, preparing PBAC interface blending adsorption layer carbon slurry according to the biomass derived hierarchical porous carbon PBAC material, and preparing working electrode slurry; performing chemical etching on ITO conductive glass to prepare an electrode substrate, printing the working electrode slurry on the electrode substrate by using a screen printing technology, and printing PBAC interface blending adsorption layer carbon slurry on the electrode substrate to obtain a working electrode; a colloidal gold solution is dropwise added to the working electrode, after drying, a probe solution is dropwise added to the surface of the working electrode again, incubation is conducted in a constant-temperature box, and the photoelectrochemical biosensor is obtained after the reaction is completed. According to the invention, the biocompatibility of the photoelectric biosensor is enhanced, and the stability and sensitivity of the sensor are improved.

The invention discloses a semiconductor packaging quality visual inspection device which comprises a machine body, a conveying mechanism and an industrial camera, the conveying mechanism and the industrial camera are installed on the machine body, and a rotary plate is rotationally connected with a lampshade; a sliding connection frame and a telescopic rod for controlling the sliding connection frame to move are arranged on the lamp tube, and a transmission part corresponding to the rotating plate is arranged on the outer side of the rotating disc; an electric control part for controlling the side cylinder to rotate is arranged on the frame rod, and a pressing structure for limiting the lampshade from being unfolded relative to the rotating plate is arranged on the side portion of the side cylinder. According to the invention, through the design of the rotary disc and the rotary plate, multi-color LED light sources can be conveniently integrated, switching of the light sources of various colors is realized, the visibility of specific characteristics can be enhanced through the optical filters of different colors, the detection accuracy is improved, and through the cooperative design of the sliding connection frame and the abutting groove, it is ensured that when the lampshade is opened and aligned with the lamp holder of the lamp barrel, the light sources of various colors can be conveniently switched. The device can be accurately fixed outside a light source, avoids light leakage, and ensures that the background of a detected image is clear.

The invention relates to a gallium nitride transistor based on a polycrystalline silicon field plate and a preparation method thereof, and belongs to the technical field of semiconductor devices. The transistor comprises a substrate, a GaN buffer layer, a GaN channel layer, an AlN insertion layer and an AlGaN barrier layer which are sequentially arranged from bottom to top, a P-GaN cap layer and a first passivation layer are arranged on the upper side of the AlGaN barrier layer, a gate metal field plate is arranged on the upper side of the P-GaN cap layer, a second passivation layer is arranged on the upper sides of the gate metal field plate and the first passivation layer, and the second passivation layer is arranged on the upper side of the second passivation layer. Two sides of the GaN buffer layer are respectively provided with source electrode metal and drain electrode metal, the first passivation layer and the second passivation layer are provided with grooves, the bottoms of the grooves penetrate through the AlGaN barrier layer, and polycrystalline silicon field plates are arranged on the upper side of the source electrode metal, the upper side of the second passivation layer and in the grooves. By introducing the polycrystalline silicon field plate, interface charges are inhibited, and the electrical performance of the device is remarkably improved.

The invention relates to a terahertz transparent electrode based on a nickel tellurium compound and a preparation method and application thereof, and belongs to the technical field of terahertz electrodes. In order to solve the problem that an existing terahertz transparent electrode cannot have high transmittance and good conductivity in the terahertz wave propagation direction at the same time, the invention provides a terahertz transparent electrode based on a nickel-tellurium compound, which comprises a substrate and a nickel-tellurium compound film. The nickel-tellurium compound films with different nickel-tellurium ratios are prepared by setting the target materials with different nickel-tellurium areas, so that the conductivity, transmittance and thickness of the terahertz transparent electrode are adjusted, and the relatively high transmittance and high conductivity of the terahertz wave band of the terahertz transparent electrode are balanced; the transmittance of the obtained terahertz transparent electrode based on the nickel tellurium compound in the terahertz wave band is higher than 80%, the conductivity is larger than 1000 S / cm, and the qualified standard of a transparent conductive film is met. The preparation method is low in requirement and suitable for practical batch production of the terahertz transparent electrode.

The embodiment of the invention provides a method for optimizing the roughness of the side wall of a glass through hole, which is used for solving the technical problem of high roughness of the side wall of the glass through hole manufactured by the existing glass through hole technology. According to the method, the femtosecond laser is adopted, and the material structure of the prefabricated through hole area is uniformly and deeply changed in a thermal cycle mode, so that the chemical etching sensitivity of the prefabricated through hole area is remarkably improved, and the prefabricated through hole area is more easily and uniformly removed; by optimizing the components and proportion of the etching liquid, the etching liquid uniformly covers and acts on the surface of the material in the modified area of the prefabricated through hole in the subsequent chemical etching stage, the modified material is corroded at a uniform speed, and corrosion residues are removed in time. Through etching liquid temperature control and ultrasonic power control, the mixing and reaction uniformity of the etching liquid is enhanced, and uniform and refined etching of the prefabricated through hole modification area is realized. And furthermore, the uniformity of glass through hole corrosion and the material removal precision are greatly improved, and the roughness of the side wall is obviously reduced from 1.257 microns to 100 nanometers or below.

The invention relates to an antistatic PP composite material based on high-gloss carbon black and a preparation method thereof, and belongs to the technical field of polypropylene composite materials. The composite material is prepared from the following components in parts by weight: 100 parts of PP (Polypropylene) resin, 15 to 20 parts of POE (Polyolefin Elastomer) resin, 8.5 to 12 parts of high-gloss carbon black, 0.6 to 0.8 part of antistatic aid, 10 to 15 parts of filler, 2.5 to 3.5 parts of lubricant and 0.12 to 0.15 part of antioxidant, the surface of the high-gloss carbon black is smooth, scattering and absorption of light among carbon black particles are reduced, more light can directly penetrate through plastic or be reflected on the surface of the plastic instead of being scattered to all directions, and therefore the glossiness of the composite material is higher; the surface is smooth and is easier to be uniformly dispersed in the material, and the polyaniline filled on the surface has good conductivity, so that a large number of conductive networks are easily formed, and the antistatic property of the composite material is obviously improved.

The utility model discloses a ditching and fertilizing integrated device, which relates to the technical field of planting equipment and comprises a ditching mechanism and a fertilizing mechanism. The ditching mechanism comprises a handle and a ditching plough; the furrow plough is fixedly arranged at one end of the handle; the fertilizer spraying mechanism comprises a fertilizer box, a fertilizer outflow pipe, a push switch and a plugging sheet; the fertilizer box is fixedly arranged on the handle and is provided with a containing cavity, a feeding hole and a discharging hole; the fertilizer outflow pipe is communicated with the discharge hole; the other end of the fertilizer outflow pipe is positioned on the rear side of the furrow plough; a sliding groove is formed in the fertilizer outflow pipe, and the push switch is arranged in the sliding groove in a sliding mode; the blocking piece is rotationally arranged in the fertilizer outflow pipe, and the rotating axis of the blocking piece passes through the center of the blocking piece; the plugging sheet is connected with the push switch through a connecting piece; when the push switch moves in the direction away from the plugging piece, the push switch can pull the plugging piece through the connecting piece and enable the plugging piece to rotate. The working efficiency can be improved, and the labor input is reduced.

The invention relates to the field of laser cutting equipment, and discloses a laser cutting workbench for sheet metal processing, comprising: a cutting platform, on which a cutting table is arranged; a plurality of thorn plates arranged on the cutting table, for increasing the friction between the sheet metal plate and the cutting table; a moving frame arranged on the cutting table, on which a plurality of conveying shafts are arranged; a laser cutting head arranged on the cutting platform; a box body arranged in the cutting platform, the position of the box body being lower than the thorn plates and the moving frame; the invention improves the design of traditional laser cutting equipment, adds a box body and a liquid cooling system, solves the problem of spark and molten metal diffusion in the laser cutting process, and significantly improves the cutting quality and the safety of the working environment.

The invention discloses a capsule filling device in the technical field of medical equipment.The capsule filling device comprises a hopper, a filling device, a capsule conveying device and a control system, the capsule conveying device is responsible for conveying empty capsules to a filling position and sending out the filled capsules, and the control system is used for controlling operation of equipment and setting of various parameters; the filling device comprises a filling box, a driving mechanism, a plurality of filling blocks and filling needles, the filling box is connected to the top end of the capsule conveying device and communicated with the hopper, the filling blocks are communicated to the bottom end of the filling box, the filling needles are connected to the bottom ends of the filling blocks, and the lengths of the filling needles are sequentially reduced. The conveying direction of the capsule conveying device is consistent with the length decreasing direction of the multiple filling needles, and the driving mechanism is used for driving the medicine powder in the filling block to reach the capsules through the filling needles.

The invention discloses potassium-sodium niobate lead-free transparent ferroelectric ceramic and a preparation method thereof, and belongs to the technical field of ceramic materials. The chemical general formula of the potassium-sodium niobate lead-free transparent ferroelectric ceramic is (K < 0.48 > Na < 0.52 >) NbO < 3-x > La < 2 > O < 3 >, and x represents the mole number of lanthanum oxide La < 2 > O < 3 > and ranges from 0.005 to 0.04. The preparation method of the potassium-sodium niobate lead-free transparent ferroelectric ceramic comprises the following steps: S1, weighing raw materials; s2, carrying out primary ball milling on the raw materials; s3, pre-sintering the primary mixed powder material; s4, carrying out secondary ball milling on the pre-sintered material; s5, adding a polyvinyl alcohol aqueous solution into the secondary mixed powder for granulation; s6, sieving the granulated powder materials; s7, the fine powder is subjected to tabletting and glue discharging treatment in sequence; s8, sintering the ceramic body; and S9, plating a silver electrode on the ceramic body, and applying voltage for polarization. By adopting the potassium-sodium niobate lead-free transparent ferroelectric ceramic and the preparation method thereof, the transparent ferroelectric ceramic material with high compactness and low dielectric loss is obtained, and has the advantages of good comprehensive properties of light transmission and ferroelectricity.

The invention relates to the technical field of lamps, in particular to a down lamp reflector system and an installation method thereof.The down lamp comprises a light source, a reflection cup and a lampshade, one side of the reflection cup is detachably connected with the light source through a first installation part, and the other side of the reflection cup is detachably connected with the lampshade through a second installation part; a lens is further installed on one side of the reflection cup through a second installation piece, a plurality of first protrusions are distributed on the inner side of the reflection cup, and a plurality of second protrusions are distributed on the side, close to the reflection cup, of the lens. According to the down lamp, the situation that dazzling occurs or the light emitting rate is low during irradiation of the down lamp can be effectively reduced, and the irradiation effect of the reflection cup is improved.

The utility model discloses a hydraulic engineering desilting device, and particularly relates to the technical field of desilting devices, the hydraulic engineering desilting device comprises a sludge pump and a mounting bottom plate, the sludge outlet end of the sludge pump is provided with a sludge conveying hose, one end of the upper end face of the mounting bottom plate is fixedly provided with a first vertical plate, and the first vertical plate is provided with a hose winding assembly; and one end of the upper end face of the first vertical plate is connected with a third vertical plate, the end, facing the third vertical plate, of the mounting bottom plate is connected with a second vertical plate, and a sludge pushing assembly is arranged between the second vertical plate and the third vertical plate. After desilting is completed, the end of the sludge conveying hose can penetrate through the position between the pressing plate and the supporting plate, the end of the sludge conveying hose is wound on the winding rod, then the motor can be started to drive the winding rod to rotate in order to conduct winding, and the sludge conveying hose can be wound through extrusion of the pressing plate and the supporting plate while winding is conducted. And residual sludge in the sludge conveying hose is extruded towards the end connected with the sludge pump, manual operation is not needed, the winding efficiency is greatly improved, and time and trouble are saved.