92results about How to "Improve dispersion efficiency" patented technology

The invention belongs to the technical field of mining, and particularly relates to a movable dust falling assembly for surface mining, which comprises a bottom plate, a U-shaped supporting plate is arranged on the top surface of the bottom plate, a circular shaft is rotatably connected to the top surface of the bottom plate, and the top end of the circular shaft is rotatably connected with the supporting plate. A water storage cylinder is arranged on the inner side, close to the top surface, of the supporting plate, a water spraying cylinder is fixedly connected to the left end of the water storage cylinder, a pressure cylinder is fixedly connected to the inner wall of the water spraying cylinder, and a spraying assembly is arranged on the end face of the water spraying cylinder; two rotating shafts are fixedly connected to the side wall of the water storage cylinder in a front-back symmetry mode, the other ends of the rotating shafts are rotationally connected with the supporting plate, a protective shell is fixedly connected to the front side wall of the supporting plate, and an angle adjusting assembly is arranged in the protective shell. The angle can be manually or electrically adjusted according to requirements, meanwhile, the angle of the atomizing nozzle can be changed, and the dust falling efficiency is improved.

The invention discloses a surface enhanced Raman scattering (SERS) micro-plastic detection method based on a solvent dispersion strategy, which comprises the following steps: filtering and enriching a liquid containing a sample to be detected by adopting a centrifugation and suction filtration mode or a mode of adopting a Raman substrate with a filtering function, dissolving the filtered sample to be detected by using an organic solvent; heating to completely volatilize the organic solvent, performing Raman detection on the to-be-detected sample to obtain Raman signal intensity, substituting the obtained Raman signal intensity into a known relationship between the sample concentration and the Raman signal intensity, and finally obtaining the actual concentration of the to-be-detected sample. According to the method, the micro-plastic is dissolved and dispersed in the organic solvent, and then the micro-plastic is subjected to Raman detection, so that the problems of low loading efficiency and low detection sensitivity of a sample to be detected are effectively solved. The method is convenient to operate, the structure of the micro-plastic cannot be damaged, the sample enrichment, dispersion and detection efficiency is effectively improved, meanwhile, the signal intensity is enhanced, background interference is reduced, repeatability is improved, the method has wide applicability, and the micro-plastic Raman detection is more efficient and faster.

The invention discloses a laser additive manufacturing method of a graphene reinforced metal matrix composite material. The method comprises the following steps: 1, preparing mixed powder of graphene and metal powder by adopting a method of combining ultrasonic and mechanical stirring; secondly, the mixed powder is subjected to preliminary melting through the preliminary melting process parameters, and a preliminary solidification deposition layer is obtained; 3, remelting the preliminary solidification deposition layer by using remelting process parameters to obtain a remelted solidification deposition layer; and fourthly, the second step and the third step are repeated layer by layer, and finally the laser additive manufacturing graphene reinforced metal matrix composite is obtained. According to the method, the mixing uniformity and stability of graphene and metal powder are improved through the ultrasonic and mechanical stirring combined method, graphene agglomeration is avoided, uniform distribution of graphene is promoted through the remelting process, the defect of poor fusion is effectively eliminated, a high-density formed part is obtained, and the product quality is improved. And synchronous improvement of heat conduction and mechanical properties of the laser additive manufacturing graphene reinforced metal matrix composite material is realized.

The invention relates to a fine-grain mineral reinforced mixing and size mixing device and method, belongs to the technical field of mineral flotation stirring and size mixing, and solves the problem that the stirring and size mixing device in the prior art cannot meet the requirements of high dispersion and collision between fine-grain minerals and flotation reagents due to the single structural design. The device comprises a barrel body, a chemical adding mechanism and a wheel-paddle coupling pulp mixing mechanism, the chemical adding mechanism is arranged on the outer side of the barrel body, the wheel-paddle coupling pulp mixing mechanism is used for intensively mixing and mixing pulp in the barrel body, and an inner cavity of the barrel body is divided into a feeding distribution area, an opposite impact area and a shearing impact area from bottom to top. Based on horizontal shearing turbulent flow collision at the bottom of the barrel body and vertical shearing turbulent flow collision at the top of the barrel body, vortex shearing of ore pulp and an agent fed into the barrel wall in a top impeller area and secondary convection collision reinforcement between impeller propelling paddle areas are achieved, dispersion, collision and adhesion of fine-grain minerals and the agent are enhanced, the pulp mixing time is shortened, and the pulp mixing efficiency is improved.

The invention relates to the technical field of floating slab ballast beds, in particular to a novel floating slab ballast bed shock absorber which comprises a shock absorber body, the shock absorber body comprises an upper cover plate and a cylinder, a telescopic sleeve is fixedly connected between the upper cover plate and the cylinder, and the cylinder is filled with a damping agent. The bottom of the upper cover plate is connected with a U-shaped permanent magnet through a connecting assembly, an electromagnet is fixedly installed at the bottom of the inner wall of the barrel, an adjusting assembly is arranged in the barrel, the bottom of the U-shaped permanent magnet is fixedly connected with a plurality of damping rods, and conical spiral blades are arranged on the outer walls of the damping rods respectively. The electromagnet is used for generating repulsive force on the U-shaped permanent magnet, vibration of the upper cover plate is further reduced, the magnetic field intensity of the upper cover plate is changed by adjusting the current intensity, so that the repulsive force is adjusted, the more downward the threaded blade is, the larger the contact area with the damping agent is, the interaction between the threaded blade and the damping agent is enhanced, and the damping effect is improved. And the absorption efficiency of vibration energy is improved.

The invention discloses a water quality sampler and a sampling method.The water quality sampler comprises a shell and a working bin, and a sampling assembly for sampling and collecting sewage is arranged in the shell; a filtering assembly used for treating suspended solids and floating and sinking particles on the surface of sewage is arranged in the working bin, a gain assembly used for adding a fixing agent into the sewage to protect organic matter in the sewage is further arranged in the shell, and a wiping plate frame drives a push column to move; a push column moves to intermittently push a convex block on the surface of an auxiliary plate to move up and down, so that a plurality of groups of matching blocks on the surface of the auxiliary plate are arranged in a filter screen plate, sewage on the surface layer of a sedimentation tank can be intermittently poured into a working bin, suspended matters with relatively large volumes can be filtered, and interference on water quality analysis is reduced; particularly, when some specific chemical components are analyzed, the accuracy of subsequent water quality detection and analysis can be improved.

The invention discloses a preparation method of graphene composite high-entropy nitride ceramic. The preparation method comprises the steps of dispersing graphene, synthesizing high-entropy powder, mixing the graphene, sintering the ceramic and the like. Graphene is dispersed in a solution formed by PVP and absolute ethyl alcohol through a strong stirring method, efficient dispersion of graphene is achieved, and finally the composite ceramic with uniform components is obtained. Energy can be effectively dissipated by an intrinsic toughening mode (namely sliding and bending of the graphene and wrapping of crystal grains) introduced by the graphene and a non-intrinsic toughening mode (pulling-out of the graphene and crack deflection, bridging and forking caused by the graphene), and the fracture toughness and bending strength of the ceramic are improved. When the addition amount of the graphene is 2.5 wt.%, the Vickers hardness, the fracture toughness and the bending strength of the composite ceramic respectively reach 18.36 GPa, 383 MPa and 4.78 MPa.m < 1 / 2 >, and the fracture toughness is improved by 63.1%.

The utility model relates to the technical field of dispersion devices for water-based polyamide wax preparation and production, in particular to a dispersion machine for water-based polyamide wax preparation, which comprises a heat insulation box, a stirring tank is arranged on the heat insulation box, a liquid inlet pipe and an air inlet pipe are arranged on one side of the heat insulation box, and a liquid outlet pipe is arranged on the heat insulation box. An annular pipe is arranged in the heat preservation box, a gas guide pipe is arranged on one side of the heat preservation box and communicates with the annular pipe, a first threaded groove is formed in the top end of the stirring tank, a first threaded ring is arranged on the first threaded groove, and a top cover is arranged on the first threaded ring. The liquid outlet pipe is connected into liquid return equipment to form cooling liquid circulation, and cooling liquid enters the heat preservation box, so that the temperature around the stirring tank is effectively reduced, a proper low-temperature environment is created for dispersion of polyamide wax particles, the melting and agglomeration phenomena of the wax particles are inhibited, and the dispersion efficiency is remarkably improved.

The present invention relates to the technical field of defoamers, and discloses a method for preparing a polyether-modified silicone defoamer. The present invention uses the hydroxyl contained in silicon dioxide and γ-glycidyloxypropyltrimethoxysilane to obtain epoxy-modified nano-silica through hydrolysis and condensation reaction. Cardanol, ethylene oxide, epoxy-modified nano-silica, etc. are used as raw materials, and modified polyether is obtained through ring-opening polymerization. Octamethylcyclotetrasiloxane, aminopropyltriethoxysilane, etc. are used as raw materials, and modified hydrogen-containing silicone oil is obtained under the catalytic reaction of concentrated sulfuric acid. Modified hydrogen-containing silicone oil and modified polyether are used as raw materials, and chloroplatinic acid is used as a catalyst to obtain polyether-modified silicone oil. Then, it is used as the main body, and a polyether-modified silicone defoamer is prepared by adding silicone paste, a thickener, etc. Thereto. The polyether-modified silicone defoamer prepared by the present invention has excellent defoaming effect and stability.

The utility model relates to the technical field of pigment production and dispersion production, and discloses a high-speed dispersion device for high-efficiency color spraying pigment production, which comprises a rack, and a dispersion stirring barrel and a stand column are arranged on the rack. The top of the stand column is provided with a dispersion assembly which comprises a dispersion power motor I, the output end of the dispersion power motor I is connected with a dispersion main synchronizing wheel, and the opposite side is provided with a dispersion auxiliary synchronizing wheel; a synchronous belt is arranged between the main and auxiliary synchronous wheels. The output end of the speed reducer is connected with a first spindle belt wheel, a spindle is arranged on the opposite side and sleeved with a second spindle belt wheel, and a spindle belt is arranged between the two belt wheels. The main shaft extends into the stirring barrel and is provided with dispersing blades, and scraping blocks are arranged at the bottoms of the blades. The dispersing power motor I and the dispersing power motor II drive the dispersing blades and the dispersing fluted disc to perform double-shaft dispersing through the main shaft and the auxiliary shaft, so that the dispersing efficiency is improved, the pigment is dispersed more uniformly, and the production quality is improved.

The utility model belongs to the technical field of coating production, and particularly relates to a dispersion machine for epoxy resin paint production, which comprises a base and a mounting frame, a hydraulic cylinder is mounted on the base, a cross beam is arranged at the output end of the hydraulic cylinder, one end of the cross beam is rotatably connected with a stirring shaft, and a dispersion disc is arranged at the bottom of the stirring shaft; the mounting frame is arranged at the end, located at the stirring shaft, of the cross beam, a flow field mechanism is arranged on the mounting frame, the flow field mechanism comprises two arc-shaped adjusting blocks which are oppositely arranged, the adjusting blocks are in sliding connection with the mounting frame, the stirring shaft is located between the two adjusting blocks, and the two adjusting blocks are close to each other and away from each other through an adjusting part. At least two baffles are rotationally connected to the lower portion of each adjusting block, and the baffles are locked through locking pieces.

This utility model relates to a stator-rotor assembly and a powder-liquid mixing device. A stator-rotor assembly includes at least one stator and at least one rotor, the rotor rotating relative to the stator to shear the material flowing through the assembly. The structure of a single stator includes a first disc with several flow holes along the circumference on its end face for material flow. The structure of a single rotor includes a second disc with several notches along the circumference on its end face for material flow; each notch is hollowed out, thus forming independent blades between adjacent notches. By configuring the stator and rotor, the shearing consistency of the stator-rotor assembly on the material can be improved, thereby increasing the dispersion efficiency; simultaneously, the small overlap area between the stator and rotor reduces the heat generation of the stator-rotor assembly.

The utility model discloses engineering machinery multiway valve body accessories relates to multiway valve technical field, including main valve body, the both sides of main valve body are provided with a plurality of oil inlet and oil outlet, the oil inlet and oil outlet outside all are fixedly connected with helical line shunt passage, the inner chamber of helical line shunt passage is towards the oil inlet one side and is opened with the liquid inlet tapering runner, when oil liquid is in through oil inlet and oil outlet send, all first pass through helical line shunt passage, and the oil liquid of passing through helical line shunt passage first pass through liquid inlet tapering runner, effectively reduced the impact force of oil liquid, improved the stability of oil liquid. Oil liquid continues to flow in helical line shunt passage, gradually enters the export diffusion chamber, and the design of export diffusion chamber makes oil liquid can diffuse steadily when flowing out, then is sent into main valve body and is sent into oil equipment, further reduces the turbulent flow and energy loss of oil liquid.

The invention relates to the technical field of plant growth regulation, in particular to the field of IPC A01N 37, and more particularly relates to a suspending agent containing mepiquat chloride. Prohexadione calcium as well as preparation and application of the suspending agent. The water-soluble suspending agent comprises the following components in percentage by weight: 5-20% of prohexadione calcium, 1-8% of mepiquat chloride, 3-10% of a dispersing agent, 1-6% of a synergist, 4-10% of an anti-freezing agent, 0.5-3% of a thickening agent, 0.5-3% of an auxiliary agent and the balance of reverse osmosis water. The formula product has relatively strong surface wetting power and can keep a good wetting effect, so that the liquid medicine is easy to spread on the surface of a leaf, the loss of the liquid medicine is reduced, and the pesticide effect is exerted; accelerated heat storage test, cold storage test and freeze thawing test show that the formula sample has excellent stability, and each index is basically unchanged before and after heat storage.

The invention belongs to the technical field of fuel cells, and particularly relates to a proton exchange membrane fuel cell membrane electrode catalyst slurry and a dispersion process thereof. The proton exchange membrane fuel cell membrane electrode catalyst slurry comprises a catalyst, a perfluorosulfonic acid resin solution, ultrapure water, isopropanol and ethanol, the catalyst adopts one or more of a platinum-carbon catalyst, a platinum-cobalt alloy catalyst and a ternary alloy catalyst, and the platinum loading capacity is 40-70%. According to the present invention, by adjusting the ratio of various alcohols to water in the catalyst slurry and ingeniously increasing the temperature of the catalyst slurry during the dispersion process, the accurate regulation of the slurry viscosity is achieved so as to ensure that the slurry can achieve the ideal rheological property during the dispersion process. The control strategy of adjusting the ratio of the alcohol to the water and optimizing the dispersion temperature not only promotes the uniform dispersion of the slurry, but also remarkably improves the dispersion efficiency, and no non-volatile substance is introduced, so that a solid foundation is provided for preparing a high-performance catalyst layer.

The utility model provides a dual-purpose rice seedling raising tray for rice seedling slinging, which relates to the technical field of rice planting and aims to solve the problem of low supporting strength of a seedling raising tray in the prior art, the dual-purpose rice seedling raising tray for rice seedling slinging comprises a seedling raising tray body, and a plurality of seedling raising grooves arranged in a matrix are arranged on the seedling raising tray body. A connecting block is arranged between every two adjacent seedling raising grooves in the same row, the connecting blocks protrude out of the upper surface of the seedling raising tray body, every two adjacent seedling raising grooves in the same column are connected through a connecting groove, and the connecting grooves are downwards concaved in the upper surface of the seedling raising tray body. And the depth of the connecting groove is smaller than that of the seedling raising groove. The overall strength of the dual-purpose seedling raising tray for rice seedling slinging is improved, the service life is prolonged, and the seedling raising tray is convenient to carry and transfer.

The utility model provides a wear -resisting anticorrosion dispersion disc structure, including dispersion disc base, the dispersion disc base top center position fixedly be equipped with the central connecting axle, the central connecting axle outer end surface fixedly be equipped with a plurality of annular array distribution's main dispersion tooth, dispersion disc base bottom fixedly be equipped with a plurality of annular array distribution's oblique dispersion vane, oblique dispersion vane is inclined. This scheme has realized high hardness and excellent chemical corrosion resistance through the single layer, dense, high -performance alloy coating of covering all key work surface, has realized high -efficient multistage dispersion and uniform mixing of material, has promoted product quality and production efficiency through the synergistic effect of main dispersion tooth, oblique vane, deflector and optional superposition disc subassembly simultaneously, produced strong impact, shear, axial circulation and complex turbulence.

This invention discloses a precipitated silica dispersant for rubber, its preparation method, and its application, relating to the field of rubber additives. The precipitated silica dispersant for rubber is made from raw materials comprising the following proportions: modified vegetable oil and hydroxide, wherein the molar ratio of the modified vegetable oil to the hydroxide is 1:(0.3-0.6), and the modified vegetable oil is copolymerized from vegetable oil monomers, benzene ring unsaturated monomers, and cashew nut phenol. This application provides an environmentally friendly and safe precipitated silica dispersant that can significantly improve the dispersibility of precipitated silica in rubber compounds while simultaneously improving the mechanical properties of the rubber compounds.

The present invention relates to the technical field of pigment slurry, and in particular to a pigment slurry mixing device and method, including a stirring mixer, an extrusion mixer and an impact mixer, wherein the stirring mixer includes a cylinder, a stirring frame is installed in the cylinder, and the stirring frame is driven by a motor I; the extrusion mixer is connected to the stirring mixer 1 through a conveying pipeline and a pressure pump, the extrusion mixer includes a gear ring cylinder and a gear shaft, and the gear shaft is driven by a motor II; the impact mixer is connected to the extrusion mixer through a conveying pipeline, the impact mixer includes a shell and a jet tube, two jet tubes are installed on both sides of the shell and a collision area is formed between the two jet tubes, and the two jet tubes are connected to a hydraulic pump. The device is used for premixing, extrusion mixing and impact mixing to obtain a slurry with a small and uniform particle size, good dispersion effect and high dispersion rate, thereby improving the coloring power, hiding power, gloss intensity and other properties of the coating.

The invention relates to the technical field of vegetable glue dispersing devices, and provides a material dispersing device for wall material powder vegetable glue bonding production, the material dispersing device comprises a main cylinder, the middle of the bottom of the main cylinder is provided with a through hole; the feeding barrel is arranged on one side of the main barrel; one end of the material passing pipe is communicated with the bottom of the feeding barrel body, and the other end of the material passing pipe penetrates through the through opening and extends into the middle part in the main barrel body; the first dispersing barrel is rotationally arranged in the main barrel body, the lower end of the first dispersing barrel extends into the upper end of the material passing pipe, the outer wall of the first dispersing barrel is adjacent to the inner wall of the material passing pipe, the first dispersing barrel is provided with a first barrel cavity, and the inner wall of the first dispersing barrel is further provided with a spiral material lifting plate; and dispersing through holes in a spiral array are formed in the cylinder wall of the first dispersing cylinder. According to the technical scheme, the technical problems of low dispersion efficiency and poor dispersion effect of the vegetable gelatin in related technologies are solved.

The utility model provides an anti-settling high-efficiency mixing device for water-based paint production, which comprises a mixing tank, a driving unit, a rotating main shaft, an upper-layer axial-flow paddle, a lower-layer radial-flow paddle and a bottom scraping and sweeping unit, the driving unit is arranged at the top of the mixing tank, the output end of the driving unit is fixedly connected with the top end of the rotating main shaft, and the bottom scraping and sweeping unit is arranged on the rotating main shaft. The rotating main shaft extends into the mixing tank from the top of the mixing tank along the central axis of the mixing tank, the bottom end of the rotating main shaft is hinged to the bottom of the mixing tank, and the upper-layer axial-flow type paddle, the lower-layer radial-flow type paddle and the bottom scraping and sweeping unit are fixedly connected with the rotating main shaft and are sequentially arranged along the rotating main shaft from top to bottom; an inclined angle is formed between the blade surface of the upper-layer axial-flow type blade and the horizontal plane; and the lower-layer radial flow type paddle is a turbo type paddle. A three-dimensional circulating flow field is formed in the tank body, mixing dead angles at the center of the tank bottom and the corners of the tank wall are eliminated, and sedimentation of pigment and filler in water-based paint is effectively prevented.

The present application relates to a kind of refractory dispersant and its preparation method in the technical field of refractory additive, it is the comb structure copolymer, the copolymer includes styrene-maleic anhydride copolymer main chain, polyethylene glycol side chain grafted on the styrene-maleic anhydride copolymer main chain by ester bond, and phosphate radical;The polyethylene glycol side chain includes short-chain polyethylene glycol with molecular weight of 400-600 and long-chain polyethylene glycol with molecular weight of 800-1200.The present application realizes the precise division of function by using asymmetric compound polyethylene glycol side chain of specific molecular weight range, and controls esterification grafting degree is 50%-85%, not only can provide excellent initial wetting and dispersion force, ensure that slurry has excellent construction fluidity, but also can effectively prevent particle re-aggregation and sedimentation under static or shear, so as to fundamentally solve the technical problem that traditional dispersant is difficult to consider high initial fluidity and long-term anti-settling property, plasticity.

The utility model relates to color sorter technical field discloses a kind of plastic sorting photoelectric positioning adjusting equipment, including cabinet and pillar, the inside of the cabinet is provided with distinguishing mechanism, the inside fixedly connected with two supports of the cabinet, the top fixedly connected with fixed frame of the cabinet, the inside of the fixed frame is provided with vibrating mechanism, the distinguishing mechanism includes servo motor one, the bottom fixedly connected in the top of pillar of servo motor one, the inner wall of the cabinet is fixedly connected with fence, the right side fixedly connected with isolation plate of the fence, the front side of the isolation plate is provided with adjusting assembly, the outer wall fixedly connected with baffle of the fence.In the utility model, through servo motor drive round plate rotation, drive the plastic in fence with round plate movement, plastic realizes uniform flow through the gap between isolation plate and fence, adjusting assembly is adapted to different specifications plastic by adjusting angle position.

The invention discloses an antistatic photocureable coating and a preparation method and application thereof, and belongs to the technical field of photocureable paints.The preparation method comprises the following steps that S1, a single-walled carbon nanotube, a polymeric dispersant and a connecting agent are placed in a defoaming machine, mixed defoaming is conducted under the vacuum condition, then photocureable resin is added into the defoaming machine, and the mixture is stirred to be uniform; mixing and defoaming under a vacuum condition to obtain a mixture; s2, transferring the mixture into a three-roller grinding machine, and grinding and dispersing for 1-3 times at the rotating speed of 500rpm, so as to obtain the anti-static light-cured resin; s3, uniformly mixing anti-static light-cured resin, a light-cured monomer, an initiator and an auxiliary agent to obtain an anti-static light-cured coating; the preparation method disclosed by the invention is simple and efficient, low in production cost and easy to realize large-scale production; the prepared coating is good in anti-static effect, high in light transmittance and low in haze, can meet various application scenes of optical thin films, and has extremely high commercial value.

This invention discloses a rubber accelerator oxidation process and feeding device, including a reaction vessel body, which comprises a reaction tank, an end cap, and an air inlet. A feeding mechanism is provided on the reaction vessel body, comprising a feeding tank, a processing tank, and a feed inlet. The feed inlet is located on the processing tank, and the output end of the feeding tank is connected to the feed end of the end cap. A dispersion component is provided on the processing tank, which is used to separate accelerators in a viscous or agglomerated state. This rubber accelerator oxidation process and feeding device utilizes the dispersion component to disperse viscous or agglomerated accelerators, effectively preventing incomplete oxidation during subsequent oxidation processes. Simultaneously, the detection and processing component effectively detects and reprocesses the accelerators, reducing the entry of viscous or agglomerated accelerators into the oxidation process, thereby further improving the product quality of the accelerator.

The invention discloses a protective conveying carrier for semiconductor production, relates to the technical field of protective conveying, and aims to solve the technical problem of low conveying efficiency of existing semiconductor production. The protective conveying carrier comprises a base station. The rectangular sheets are cut into the rectangular sheets through the laser cutting mechanism, then the rectangular sheets are conveyed to the position under the vacuum suction cup mechanism through the conveying mechanism, the rectangular sheets are firstly jacked up through the jacking assembly, and the adjusting driving assembly drives the first distance scattering assembly, the second distance scattering assembly and the telescopic elastic block so that the rectangular sheets on the carrying disc assembly can be scattered; the device has the function of quickly dispersing the rectangular sheets, the production efficiency is greatly improved, more rectangular sheets can be processed in unit time, and the urgent requirement of the modern semiconductor industry for high yield is met.

The utility model discloses a liftable dispersion machine for paint production, and relates to the technical field of paint production. The paint bucket supporting device comprises a base, a supporting plate and a fixing frame are arranged at the top of the base, a fixing plate is welded to the upper portion of one side of the supporting plate, a first lead screw is installed on the inner side of the fixing plate, and a threaded cylinder is in threaded connection with the outer surface of the first lead screw. Then a second servo motor is started, the second servo motor rotates to enable a driving shaft to rotate, so that a driving bevel gear rotates, the driving bevel gear rotates to drive a driven bevel gear to rotate, so that a second lead screw rotates, and then a threaded seat drives a paint bucket to move upwards through a bearing groove; and after the paint bucket moves upwards, the cover plate can seal the paint bucket, so that the effect of shielding the paint bucket can be achieved, and the problem that paint is wasted due to the fact that the paint is likely to be splashed to the outer side of the paint bucket in the machining process is solved.

The invention belongs to the technical field of dispersion devices, and particularly discloses an ultrasonic dispersion structure which comprises an energy gathering cavity with a cavity. The energy converter is connected with the energy gathering cavity, the amplitude-change pole is connected into the energy converter, and at least part of the amplitude-change pole is arranged in the energy gathering cavity; at least one set of amplitude changing rods are arranged at one end of the energy gathering cavity through the energy converter, the energy converter and the amplitude changing rods are provided with coaxial through holes, the through holes are communicated with the cavity, and materials enter the cavity through the through holes. When the materials to be dispersed are conveyed and flow in the through holes, the materials are vibrated in the through holes, so that the materials are pre-dispersed, the dispersion effect is improved, the adhesive force of the materials to the inner walls of the through holes is basically eliminated, the materials (especially solid materials) cannot be adhered to and detained on the inner walls of the through holes, and the conveying capacity is stable. Meanwhile, the invention also discloses a dispersing device.

The invention belongs to the field of metal-based composite materials, and relates to a high-strength and high-conductivity copper-based composite material and a preparation method thereof. Comprising the following steps: taking out a part from an original copper base as a prefabricated copper base and smelting the prefabricated copper base; adding active elements into the prefabricated copper melt, and uniformly stirring and mixing; adding nano ceramic particles into the prefabricated copper alloy melt, and uniformly stirring and mixing; smelting the residual original copper base at a high temperature, adding the copper alloy reinforced melt into the residual base copper melt, and uniformly stirring and mixing; and cooling is carried out under mechanical vibration, part of active elements are separated out of the copper base and form a liquid phase enrichment layer on the surfaces of the nano ceramic particles, and finally solid solution coating is formed, so that interface energy and wettability of the copper base and the nano ceramic two phases are reduced, uniform distribution of the nano ceramic particles in the copper base is promoted, and the high-strength and high-conductivity copper-based composite material is obtained. By means of the preparation method, the preparation difficulty and the production cost can be reduced, and the obtained composite material can have the conductivity and the mechanical property at the same time.

The utility model relates to the field of 3D printing, in particular to plastic additive powder anti-agglomeration mixing equipment which comprises a bottom plate, a lifting assembly is arranged on the bottom plate, and a mixing assembly is arranged on the lifting assembly; according to the anti-agglomeration mixing equipment for the plastic additive powder, through the arrangement of the mixing assembly, the scheme adopts a multi-motor cooperative driving composite motion mechanism, a second motor drives a stirring frame to realize shearing and convection dispersion of materials in a barrel, and a first motor drives a rotating frame and the mixing barrel to rotate, so that space migration and collision of the materials are enhanced; the third motor enables the rotating frame to rotate reversely through the chain wheel and the transmission chain, and a multi-dimensional complementary movement track is formed. The multi-shaft linkage mode effectively breaks through the limitation of traditional single-shaft stirring, the dispersion efficiency and uniformity are remarkably improved, and the agglomeration phenomenon is efficiently eliminated by strengthening friction and collision among particles, so that the mixing quality of the plastic additive powder is ensured to meet the high-standard process requirement.