65results about How to "Fast preparation" patented technology

This invention provides an open-type internal extrusion forming die and a forming process for large-size blind hole shells, including a die cavity, a forming punch, and an extrusion punch. A laterally movable inner die is provided on the die cavity, and an ejector rod is provided on the inner die. The die cavity and the inner die cavity together form a workpiece cavity with a variable shape. The inner die has a vertically arranged first chamber and a second chamber, both of which can connect with the die cavity. The process steps include: pulling the pressure block upwards so that the distance between the two clamping plates is greater than the outer diameter of the blank; feeding the blank from the top of the die cavity; controlling the forming punch to move downwards until the blank fills the workpiece cavity under the action of the forming punch; controlling the forming punch to return; controlling the ejector rod to move upwards until the top flange of the preform is above the clamping plates. This invention can not only smoothly and quickly produce large-size blind hole shells, but also significantly reduce the end allowance of the blank required during the forming process.

The application relates to a high-pressure-resistant PES filter membrane and a preparation process thereof, which comprises a porous main body, the porous main body comprises a mesoporous layer, a pre-filter layer and a separation layer in sequence along the thickness direction, the surface of one side of the mesoporous layer is a liquid inlet surface, the SEM average pore diameter of the pre-filter layer is larger than that of the mesoporous layer; the PMI average pore diameter of the filter membrane is 0.15-0.6 microns; a plurality of liquid inlet holes are distributed on the liquid inlet surface, the SEM average pore diameter K of the liquid inlet hole is 0.2-1.5 microns, and the hole area rate of the liquid inlet surface is 5-35%; the pore diameter of the liquid inlet hole is not less than 1.5K, which is a main liquid inlet hole, and the hole area rate of the main liquid inlet hole is 2-25%. After the mesoporous layer is introduced into the filter membrane, the mechanical property of the filter membrane is obviously improved, so that the pore structure of the porous main body on the liquid inlet surface and near the liquid inlet surface of the filter membrane does not deform too much under high pressure, so that the filter membrane still maintains a large effective flow channel area, and the high flux and high load of the filter membrane are ensured.

The application belongs to the technical field of lithium batteries, and discloses a gel electrolyte taking a functionalized two-dimensional MXene material as a dispersant as well as a preparation method and application of the gel electrolyte. The gel electrolyte comprises a functionalized MXene material and a basic electrolyte; the functionalized MXene material is obtained by the following method: 1) treating a MAX phase material with a solution containing HCl and LiF, intercalating, peeling off, and then reacting with a diazonium salt solution to obtain a sulfonic acid functionalized MXene material. The application further discloses a preparation method of the gel electrolyte. The application reconstructs a lithium ion solvation structure, reduces a desolvation energy barrier, homogenizes a bulk phase electric field and ion flow, cooperatively induces formation of a stable SEI interface rich in inorganic species, significantly inhibits lithium dendrite growth, and improves interface kinetic stability. The method is simple and low in cost. The electrolyte is used in a lithium metal battery and exhibits excellent cycle performance.

The present application belongs to the technical field of fruit by-product processing, and particularly relates to a method for extracting cellulose, pectin and polyphenol from pear by-product. The present application utilizes the thermo-mechanical-chemical effect of steam explosion to treat the pear by-product through steam explosion, so that most of hemicellulose and lignin can be removed, and the cellulose, pectin and polyphenol can be efficiently and rapidly extracted, thereby shortening the production cycle of the cellulose, pectin and polyphenol and improving the efficiency. Furthermore, the present application uses a combination of choline chloride and ethanol as a low eutectic solvent, and compared with other types of hydrogen bond acceptors and hydrogen bond donors, the polyphenol extraction effect is the most significant. The present application provides a method for laying a foundation for further development and utilization of pear residue cellulose, pectin and polyphenol, and improves the comprehensive utilization rate of pear processing by-products.

The utility model discloses a slurry shield device, which belongs to the technical field of tunnel construction and comprises a containing box, a slurry cabin, a first conveying pipeline, a processing mechanism, a second conveying pipeline and a cutter head. The containing box is provided with a feeding opening communicating with the inner space, and the feeding opening is used for feeding muddy water materials into the containing box. The slurry cabin is used for accommodating initial slurry; the first conveying pipeline is used for conveying initial slurry in the slurry cabin to the accommodating box; the processing mechanism is used for processing the muddy water material entering the charging hole and the initial slurry in the accommodating box into standard slurry; the second conveying pipeline is used for conveying the standard slurry in the accommodating box to the slurry cabin; the cutterhead is arranged in the muddy water cabin and used for laying the standard slurry in the muddy water cabin to a tunnel face to form a mud film.

The present disclosure relates to an image production method and device, electronic equipment and storage medium. The method comprises: obtaining a background layer image and rendering data of a plurality of candidate objects; sorting the plurality of candidate objects based on a preset sorting rule to obtain a target sequence; sequentially performing image rendering based on the rendering data of the candidate objects according to the target sequence to obtain a foreground layer image corresponding to the candidate objects; and in an image display process, in response to a switching instruction switching to a target object, synthesizing the foreground layer image corresponding to the target object and the background layer image to obtain a target image corresponding to the target object and displaying the target image. The target object is an object in the plurality of candidate objects. The time interval from detecting the switching instruction to displaying the target image corresponding to the switching instruction can be shortened, the target image can be quickly produced and timely displayed, and the image display and sharing process can be synchronized.

The utility model relates to food shaping manufacturing technology field, and disclose a kind of pill maker, comprising: accommodating bucket and cutting ring, cutting ring is sleeved in the surface of accommodating bucket, the surface of accommodating bucket is equipped with multiple discharge holes, and multiple discharge holes are evenly distributed along the circumference of accommodating bucket, the top of accommodating bucket is provided with support frame, the inside of accommodating bucket is provided with extrusion plate, and extrusion assembly is arranged on support frame.The pill maker, by setting accommodating bucket, cutting ring, support frame, extrusion plate, extrusion assembly, the prepared pill material is placed into accommodating cylinder, extrusion plate extrudes pill material, and the pill material is extruded from discharge hole, by setting down pressure arm and driving rod, extruded pill material can push down pressure arm, down pressure arm pushes driving rod to move, driving rod pushes cutting ring to move, the position of cutting ring is conveniently adjusted, and cutting is carried out quickly, cutting ring cuts pill material, and multiple pills can be manufactured in practical use once, and pill manufacturing process is fast.

The present application belongs to the technical field of formwork support, and particularly discloses a special-shaped column formwork support device and method. The device comprises a plurality of support modules arranged along the circumference of the wood block cross section and a deformation monitoring module. The support module comprises a hinged telescopic connecting rod unit and a locking unit. A plurality of the hinged telescopic connecting rod units are connected in sequence to form a ring structure, and the hinged telescopic connecting rod unit can be telescopic adjusted to adapt to different wood block cross sections. The locking unit is used for locking two adjacent hinged telescopic connecting rod units to achieve fastening support of the special-shaped column formwork. The deformation monitoring module is arranged on the hinged telescopic connecting rod unit and used for monitoring the deformation of the formwork at different height cross sections. The present application can be freely adjusted according to the shape of the special-shaped column, thereby better supporting the concrete column formwork. Meanwhile, the fastener is positioned and deformation monitored during the fastening process, thereby avoiding the deformation and inclination of the formwork.

A method for the preparation of a working electrode for an analyte sensor comprises application of a sensing material in several steps.

The limb measuring assembly comprises a standing plate, the left end and the right end of the bottom of the standing plate are each fixedly provided with an anti-skid pad, the anti-skid pads are symmetrically arranged front and back relative to the vertical central axis of the standing plate, the standing plate is arranged in an L-shaped structure state, and a first measuring plate is rotationally connected to the rear end of the standing plate; the rear end of the first measuring plate is rotatably connected with a first fixing bolt, the first fixing bolt penetrates through the first measuring plate and is fixedly connected with the standing plate, the interior of the first measuring plate is rotatably connected with a threaded rod, a rod body of the threaded rod is slidably connected with a connecting block, and the left end of the front of the first measuring plate is provided with a second measuring plate. According to the limb measurement assembly, measurement can be independently completed through standing of a measured person without assistance of other people, meanwhile, a more stable posture can be provided through standing, more accurate limb data can be obtained, and therefore autonomy and convenience of measurement are enhanced.

This invention relates to a method for synthesizing multicolored luminescent polymer films using a microwave approach. The method first involves dissolving acrylamide, ammonium persulfate, and α-thiophenecarboxylic acid trifluoroacetone in a solvent, then refluxing the mixture under microwave power. After cooling to room temperature, polymer A is precipitated with methanol. Polymer A is then dissolved in deionized water, europium nitrate solution is added, the pH is adjusted to neutral, the mixture is shaken, and after standing, polymer B is precipitated with methanol. Finally, polymer B is dissolved in deionized water to obtain a colloidal solution. The colloidal solution is dropped into a silicone mold and dried to obtain the multicolored luminescent polymer film. This invention provides a simple, convenient, and rapid preparation method that does not require inert gas protection and can complete polymerization within minutes, showing broad application prospects.

The drilling tool comprises a drill bit, the drill bit is provided with a cylindrical shell, the bottom edge of the cylindrical shell is fixedly connected with a plurality of diamond drill bits, the top of the cylindrical shell is narrowed inwards and provided with a connecting part, and the connecting part is used for being connected with a drilling machine. A plurality of spiral sheets are uniformly arranged in the drill bit and are matched to form a continuous spiral flow guide channel, the disturbance is low, specifically, the spiral iron sheet is segmented, the shearing force to sludge during rotation is reduced by 40%-60%, and the layering definition of a sample is improved; rapid preparation is achieved, drilling tool assembly can be completed within 2 hours through a standardized welding assembly, and the cost is extremely low; the spiral design is beneficial to continuous sampling of samples and can prevent the samples from slipping off in the lifting process; environmental adaptability: the device is highly adaptive to a drilling tool, and is at least suitable for rivers, lakes, reservoirs and the like with the water depth of 30 m or less and the sludge thickness of 20 m at present through actual operation.

The present invention relates to an apparatus for preparing a DNA product by capillary polymerase chain reaction (PCR); an apparatus for manufacturing a pharmaceutical product; a module for manufacturing a pharmaceutical product; a method for preparing a DNA product by capillary polymerase chain reaction; use of an apparatus for preparing a DNA product by polymerase chain reaction; and use of an apparatus for producing a pharmaceutical product. The apparatus for preparing a DNA product by capillary polymerase chain reaction comprises a tube for guiding a PCR liquid, a first compartment and at least a second compartment. The tube is bent at least from the first compartment to the second compartment and from the second compartment to the first compartment, wherein the tube bent from compartment to compartment forms a helical stack of tube windings. The first compartment and the second compartment each comprise means for adjusting a temperature in the compartment to prepare a DNA product based on the PCR liquid, wherein the first compartment is configured to provide a temperature for denaturation and the second compartment is configured to provide a temperature for annealing and / or elongation.

This invention relates to the field of photovoltaic cable manufacturing technology, and more particularly to a solar photovoltaic cable and its manufacturing process. The process includes: processing a tin-plated cable core according to a pre-process; extruding the tin-plated cable core through an extruder with preset extrusion parameters to perform a first functional layer extrusion; pre-cooling the extruded cable; determining a second preset pulling speed for the second functional layer extrusion process based on a first excess value when the functionality is deemed unqualified, and further determining a second preset pulling speed based on a first excess value when the functionality is deemed unqualified after the pre-cooling stage; and adjusting the cooling temperature based on a second excess value when the cooling is deemed unqualified, and based on a second excess value when the cooling is deemed unqualified, after the cooling is deemed unqualified. This invention can comprehensively assess the manufacturing quality of photovoltaic cables from multiple dimensions and deeply refine it from a single dimension, and automatically feed back and adjust the parameters for manufacturing photovoltaic cables to improve the stability of the performance and the stability of the manufacturing process of photovoltaic cables.

This invention relates to a method for preparing polylactic acid (PLA) by straw fermentation coupled with lactide ring-opening polymerization, belonging to the field of biomass resource utilization and bio-based polymer materials technology. To address the problems of high energy consumption and low sugar conversion rate in existing PLA preparation methods using crop straw, this invention provides a method for preparing PLA by straw fermentation coupled with lactide ring-opening polymerization. The method involves crushing the straw, pre-treating it with dilute acid coupled with steam explosion, washing and drying it, adding a complex cellulase and Lactobacillus pentosus LB-1 seed culture, and simultaneously saccharifying and fermenting under controlled temperature and pH to obtain a lactic acid fermentation broth. The fermentation broth undergoes multi-stage filtration, ion exchange, and concentration to obtain refined lactic acid, which is then prepolymerized, depolymerized, and distilled to obtain L-lactide. After purification, an initiator and antioxidant are added, and ring-opening polymerization, extraction, and drying are performed under nitrogen protection to obtain pure PLA. This invention features efficient and low-energy straw pretreatment, high sugar-acid conversion rate during fermentation, precise purification, stable polymerization, and low cost, making it a green and economical method using straw as raw material.

This application provides a high-precision, self-adhesive, stretchable, multimodal pattern system and its construction method, applied to motion behavior monitoring. The method includes the following steps: providing a flexible, stretchable conductive film material; simulating the structural parameters of the motion-sensitive pattern system using simulation software, and based on these parameters, creating a mechanical motion-sensitive pattern using drafting software; importing the mechanical motion-sensitive pattern into a digital printing device, adjusting the device parameters, and printing the pattern onto the flexible, stretchable conductive film material to obtain the digitally printed mechanical motion-sensitive pattern; and conducting a conformity inspection on the digitally printed pattern. Upon passing the inspection, a high-precision, self-adhesive, stretchable mechanical motion-sensitive pattern system is obtained. This application aims to solve scientific motion problems such as posture calibration, rehabilitation training, and movement monitoring in complex motion environments such as sports, fitness, and rehabilitation.

The invention discloses a heat treatment process for improving the strength of an additive manufacturing nickel-based alloy FGH4098, and belongs to the technical field of metal additive manufacturing and heat treatment. Comprising the following steps: forming an FGH4098 alloy blank by adopting a selective laser melting (LPBF) technology; performing high-vacuum packaging treatment on the cleaned sample to construct a clean independent microenvironment; and then direct aging heat treatment at the temperature of about 760 DEG C is carried out. According to the method, a traditional high-temperature solid solution step is abandoned, and a micron-sized fine grain structure and a high-density dislocation network which are unique to a printing state are completely reserved; meanwhile, oxygen erosion in the heat treatment process is effectively isolated through vacuum packaging, oxidative depletion of key strengthening elements (Al and Ti) is prevented, and it is ensured that phases are fully dispersed and separated out in the pure environment. According to the invention, the problems of grain coarsening and softening caused by high-temperature solid solution and easy oxidative deformation in conventional aging in the prior art are solved, the tensile strength, hardness and dimensional stability of the alloy are remarkably improved, and short-process precision manufacturing of high-performance components is realized.

The present application belongs to the technical field of self-cleaning coating material, and discloses a super-hydrophobic self-cleaning coating material, a preparation method thereof, and a coating based on the same and application. The super-hydrophobic self-cleaning coating material comprises paint phenol, amino silicone oil and mixed solvents. The present application realizes the chemical modification of the paint phenol by the amino silane through the chemical reaction between the groups of the paint phenol and the amino silane. Further, the present application uses ethanol and water as mixed solvents, utilizes the compatibility difference of the paint phenol and the amino silicone oil in the ethanol and water, and assembles the microstructure in the solvent drying and volatilization process during the application process, which is unique and avoids the limitations of the traditional method of constructing microstructure by using nanoparticles. Further, the hydrophobic long chain of the paint phenol and the hydrophobic silicone chain segment of the amino silicone oil are utilized, so as to endow the material surface with excellent low surface energy characteristics.

The utility model discloses a single-point or multi-point temperature thermocouple with a replaceable probe, which comprises a detection end and a thermocouple core wire, and is characterized in that the detection end consists of an outer protective tube, a porous inner core sleeve arranged in the outer protective tube and a plurality of temperature measuring points distributed on the outer protective tube at different distances; a plurality of thermocouple core wires are arranged in the porous inner core sleeve, the receiving end of each thermocouple core wire is connected with each temperature measuring point, a protective tube sealing assembly is arranged at the front end of the outer protective tube, and the outer protective tube can be assembled, disassembled and replaced from the protective tube sealing assembly. The number of thermocouple core wires is not limited, and more than eight thermocouple core wires can be compatible in the technical scheme. And the outer protective pipe can be detached from the protective pipe sealing assembly, so that outer protective pipes of different materials, types and models can be replaced to meet different use requirements. And the sealing performance is excellent through the cooperation of the protective pipe sealing assembly and the porous sealing assembly with the dust cover assembly.

The invention provides a multi-layer quantum dot film and a preparation method and application thereof.According to the preparation method of the multi-layer quantum dot film, layer-by-layer deposition and a light / heat double-trigger mild cross-linking strategy are combined, and rapid cross-linking curing is achieved through low-temperature (smaller than or equal to 100 DEG C) or low-dose light irradiation; irreversible damage of a quantum dot crystal structure or film deformation can be avoided, the method is suitable for ensuring flexible substrates and large-area preparation, and the thickness of the film is precisely controllable within the range of 50-500 nm; the thin film is uniform and compact, the AFM surface roughness is smaller than 3 nm, precise, high-quality and rapid preparation of the short wave infrared (SWIR) quantum dot thick film is achieved, and when the prepared thin film is applied to a photoelectric device, high detection rate (for example, the detection rate of a photoelectric detector reaches the 1012 Jones magnitude) and excellent long-term environment stability can be achieved.

The invention discloses a preparation method of biochar improved by an acidic deep-eutectic solvent and application of the biochar in degradation of fomesafen, and relates to the technical field of water pollution treatment and environmental functional materials. The preparation method comprises the following steps: mixing biomass powder and an acidic deep-eutectic solvent, and carrying out heating reflux reaction to obtain biochar; the acidic eutectic solvent takes choline chloride as a hydrogen bond acceptor and methanesulfonic acid as a hydrogen bond donor. By introducing the acidic eutectic solvent, the conditions of the traditional hydrothermal carbonization method are optimized, and hydrothermal carbonization of biomass can be carried out at normal pressure and 200 DEG C or below. In addition, efficient degradation of fomesafen pesticide residues in a water body is realized by utilizing the biochar activated persulfate optimally prepared by the method, and the biochar activated persulfate shows good degradation performance in a neutral to alkalescent water environment and can be used for purification treatment of pesticide polluted water bodies.

The invention relates to the field of synthesis of drug intermediates, in particular to a preparation method of 3-oxo-1-oxa-8-azaspiro [4.5] decane-8-tert-butyl formate. The preparation method comprises the following steps: carrying out condensation reaction on a compound III (4-ethoxycarbonyl methylene-1-tert-butyl piperidinecarboxylate) and methyl glycolate to generate a five-membered ring, and preparing to obtain a compound IV; according to the preparation method, tert-butyl 3-oxo-1-oxa-8-azaspiro [4.5] decane-8-formate (compound I) is prepared through a decarboxylation reaction of the compound IV, and the total yield of the reaction can reach 88.73%. The preparation method provided by the invention has the advantages of easily available raw materials, simple operation and high reaction yield.

The invention belongs to the field of fish genetic breeding, and particularly relates to a method for preparing sterile triploid fish with a tyr gene knocked out, which comprises the following steps: S1, knocking out wild type female diploid red crucian carp and male autotetraploid crucian carp high mutants through the tyr gene, and screening out the female diploid red crucian carp high mutant and the male autotetraploid crucian carp high mutant; and S2, hybridizing the female diploid red crucian carp high mutant and the male autotetraploid crucian carp high mutant to prepare the tyr gene knockout sterile triploid crucian carp homozygous mutant on a large scale. By utilizing the method, the triploid fishes with the accurately improved characters are prepared on a large scale, and the problem of biological safety is solved due to the natural sterility characteristics of the triploid fishes, so that the method has important practical value and ecological significance for genetic breeding and sustainable development in aquaculture.

The application discloses a video auxiliary-based text reconstruction model training method and device, which comprises the following steps: training a to-be-trained text model according to all determined training samples, obtaining a trained text model, and judging whether the trained text model converges; wherein, when the to-be-trained text model is trained, the input content of the feature fusion layer included in the to-be-trained text model comprises a text feature vector corresponding to a sample text in any training sample and a video feature vector corresponding to the sample text and generated in advance; and if yes, the trained text model is determined as a text reconstruction model. It can be seen that the text reconstruction model can be trained with the aid of the video feature vector, which is not only beneficial to the user to quickly produce a video text through the text reconstruction model without repeatedly correcting the video text, but also beneficial to improving the matching degree between the generated video text and the video, thereby meeting the production demand of the user for the video text.

The present application relates to the technical field of moisture-permeable membrane materials, and provides a polysulfone moisture-permeable hollow fiber membrane, the average pore size of a first surface is not greater than 100 nm, and the average pore size of a second surface is not less than 0.25 μm; the content of sulfonic acid groups on the first surface is greater than the content of sulfonic acid groups on the second surface, and the difference between the content of sulfonic acid groups on the first surface and the content of sulfonic acid groups on the second surface is not less than 1X10 ‑3 -4; the water conversion efficiency of the hollow fiber membrane is 40% to 70%, and the water vapor permeation rate of the hollow fiber membrane is 0.5 to 3 g / min. The structure of the polysulfone moisture-permeable hollow fiber membrane provided by the present application shows high water conversion efficiency and water vapor permeation rate, and also has good tensile strength, so that it has a long service life.

The utility model provides a device for preparation capillary silica gel pipe. The device comprises: upper template, lower template and support core, the diameter of support core is same with the inner diameter of capillary silica gel pipe to be prepared, the upper template is installed on the top of lower template, the bottom surface of upper template is concave upwards and forms upper forming groove, the top surface of lower template is concave downwards and forms lower forming groove, when the upper template is installed on the lower template, the upper forming groove is located directly above the lower forming groove, the upper forming groove and the lower forming groove form forming cavity, the diameter of forming cavity is same with the outer diameter of capillary silica gel pipe to be prepared, the support core is arranged between the upper template and the lower template through the forming cavity, and the axis of support core is coincident with the axis of forming cavity. The device has simple overall structure, is convenient to use, can realize timely, efficient and low -cost production capillary silica gel pipe.

This invention belongs to the field of polymer materials technology, specifically to active cationic polymerization coupling agents, their preparation methods, and applications. The coupling agent of this invention is 1,2-bis[4-[1-(4-methoxyphenyl)vinyl]phenyl]ethane, denoted as bis-DPE-OMe; specifically, 1,2-bis(4-acetylphenyl)ethane is synthesized from 1,2-bisphenylethane via a Friedel-Crafts acylation reaction; then, 1,2-bis[4-[1-hydroxy-1-(4-methoxyphenyl)-1-ethyl]phenyl]ethane is synthesized via a Grignard reaction; finally, the target product is obtained through intramolecular dehydration. This coupling agent can be used to couple active chain ends to obtain homopolymers and block copolymers, including for the coupling of polyisobutylene and poly(isobutylene- b Poly(styrene-) diblock copolymers were coupled to prepare poly(styrene-) b -Isobutylene- b (-Styrene). Compared with existing technologies, this invention synthesizes a novel and highly efficient cationic polymerization coupling agent. The synthesis process of the coupling agent is simple and it is easy to achieve coupling to the ends of the active PIB chains.

The application discloses a flexible circuit forming machine and a manufacturing method thereof, and relates to the technical field of flexible circuit manufacturing.The device comprises a support assembly, a laser assembly, a spraying assembly, a rolling assembly and a control assembly, a graphene pattern is formed on the surface of a polyimide film through scanning by a 450nm blue light semiconductor laser, curing is carried out through twice spraying of special three-proofing paint for circuit boards, and finally, rolling and packaging are carried out through a flexible silica gel film.The application provides a device and a method for low-cost preparation of a flexible conductive circuit, a strain sensor and a low-voltage electric heating device, and the device is small in size and convenient to operate, and is suitable for teaching demonstration, maker design and other scenes.

The utility model provides an upper rotating device for ice cream making. The upper rotating device comprises a fixed plate, a pushing device, a rotating device and an extruding device, and the extrusion device is provided with a conical storage bin, a rotating rod, a mixing blade and a conical spiral guide blade, so that the raw materials can be efficiently mixed and stably extruded. The rotating device is driven by a worm and gear structure to drive the extrusion device to realize rotary extrusion, and is suitable for circumferential covering modeling of large ice cream; when rotation is not started, straight barrel type extrusion is achieved, and the requirements of various products are met. The pushing air cylinder is matched with the guide assembly to ensure stable lifting and accurate positioning. The device is compact in structure, easy and convenient to operate, attractive in appearance, high in production efficiency and suitable for diversified operation requirements of ice cream stores.

The utility model discloses a composite liquid drop synthesis device which comprises a main pipe, an inlet pipe and an outlet pipe which are coaxially arranged, the sectional area of the inlet pipe is smaller than that of the outlet pipe, and the sectional area of the outlet pipe is smaller than that of the main pipe. The inlet pipe and the outlet pipe are arranged at the two ends of the main pipe, the discharging end of the inlet pipe is arranged in the main pipe, the feeding end of the outlet pipe is arranged in the main pipe, and a gap exists between the outlet end of the inlet pipe and the inlet end of the outlet pipe; the two ends of the main pipe are closed, a first feeding port and a second feeding port are formed in the side face of the main pipe, the first feeding port is located on the outer side of the inlet pipe, and the second feeding port is located on the outer side of the outlet pipe. The device disclosed by the utility model is simple in structure and can be used for rapidly preparing the composite liquid drops with uniform and controllable particle sizes.