100results about How to "Stable suspension" patented technology

The invention relates to a process for preparing ophthalmic formulations and to formulations containing a suspension of an ophthalmic drug in an aqueous vehicle. The invention further relates to the production of stable ophthalmic formulations that have a minimal propensity to form drug aggregates.

The invention discloses a testing device and method for measuring the sandy soil moving states under different liquefaction degrees. The device comprises a model box, a working bench, a support, a speed regulating electromotor and a PIV (peak inverse voltage) platform, wherein the model box is internally provided with pulley blocks and steel wire ropes; the PIV platform is installed on one side out of a panel pasted with a transparent scale grid paper, and consists of two parts including a CCD (charged coupled device) digital camera and a camera support. A using method of the device comprises the following steps of: simulating liquefied sandy soil with different liquefaction degrees by adopting plastic sands with different gradations and a sodium chloride solution with specific density; dragging a carbon wire by the speed regulating electromotor; driving semi-spherical-body slide blocks to move horizontally by the pulley blocks; installing a pull force sensor at the vertical moving section; and measuring the moving state of plastic sand particles around during the moving process of the semi-spherical-body slide blocks by utilizing the PIV platform and the pull force sensor. The testing device and method for measuring the sandy soil moving states under different liquefaction degrees have the advantages that the liquefied sandy soil can be simulated under different pore pressure ratios according to actual requirements; the measurement accuracy is high; the operation is simple and feasible and the like.

The invention discloses a gas distributor for a slurry bed reactor so as to solve the problem that bubbles cannot be broken well under the condition of large air input, gases cannot be uniformly distributed and a check ball will frequently bounce in an air-flow when a present bellcap distributor is used for gas distribution and feeding of a slurry bed reactor. The gas distributor provided by the invention is provided with a bellcap (3), an air inlet pipe (1) and a check ball (2). Gas distribution holes (32) are arranged slanting upwards on a cylindrical shell of the bellcap. The air inlet pipe is composed of an air inlet pipe upper-portion and an air inlet pipe lower-portion. The air inlet pipe upper-portion is provided with an air inlet pipe upper-portion middle-lower opening (5) and an air inlet pipe upper-portion top opening (6). An inner cavity of the air inlet pipe is composed of an inverted frutum conical air inlet pipe lower-portion upper core space, an air inlet pipe lower-portion bottleneck and a frutum conical air inlet pipe lower-portion lower core space which are arranged from top to bottom. The check ball is supported on the surface of the air inlet pipe lower-portion upper core space when placed at a sealing position. The gas distributor provided by the invention can be used in a slurry bed reactor for gas distribution and feeding.

The invention relates to the technical field of film engineering and particularly relates to a nano-silicon dioxide / nano-fiber oil-water separation composite film and a preparation method thereof. The preparation method comprises the following steps: (1) preparing a nano-silicon dioxide liquid: mixing nano-silicon dioxide particles and a water-soluble polymer, and dissolving the mixture into a solvent, so as to obtain the nano-silicon dioxide liquid; (2) preparing a nano-fiber suspension liquid: dissolving nano-fibers which are processed by virtue of a high-speed shearing machine into a solvent, so as to obtain the nano-fiber suspension liquid; and (3) preparing the nano-silicon dioxide / nano-fiber oil-water separation composite film: uniformly mixing the nano-silicon dioxide liquid with the nano-fiber suspension liquid, so as to obtain a film forming liquid. The preparation method is simple; and the prepared nano-silicon dioxide / nano-fiber oil-water separation composite film has relatively good mechanical strength and relatively high separation efficiency.

The invention provides a low-rigidity flexible suspension device for ground gravity-free condition simulation of aerospace products. The suspension device is mainly composed of a suspending truss, an adapter connecting frame, a chain block, an elastic string, and a sensor. Gravity-free condition simulation of products is realized through multi-suspension-point suspending, the suspending force at each suspension point can be independently adjusted, and the mechanical properties of the elastic string are utilized for adjusting the inherent frequency of a suspension system. The suspension device is capable of realizing microgravity condition simulation of detected products, the suspending quantity is not limited, the suspending force at each suspension point can be independently and steplessly adjusted, the suspending force can keep stable for a long time, flexible suspension of detected products can be realized, and the inherent frequency of the suspension system can be adjusted as required, and disturbance to detected products by an outside vibration source can be effectively isolated.

The invention provides a space mechanical arm suspension microgravity simulation method, and belongs to the field of simulation experiments, wherein the method comprises the steps: S1, installing a space machine, and controlling a six-degree-of-freedom table to move to a test starting position on an air floatation platform; S2, adjusting the alignment position according to the target point of thesix-degree-of-freedom table; S3, controlling a mechanical swing arm to move, and connecting a suspension assembly with a suspension point; S4, controlling an omnidirectional mobile platform to move along with the six-degree-of-freedom platform; S5, controlling a space mechanical arm to be unfolded; S6, after the space mechanical arm completes the test, controlling the space mechanical arm to moveto an original folded state; S7, after the six-degree-of-freedom table moves to the parking position, closing an air source, and supporting and fixing the six-degree-of-freedom table; and S8, ending the test of disassembling a suspension assembly. The action of the gravity of the mechanical arm on the posture of a spacecraft when the mechanical arm is unfolded is eliminated, meanwhile, more motionfreedom degrees and motion ranges of the mechanical arm are reserved, and the unfolding range of the space mechanical arm is adapted to in a large range.

The micro gyro includes upper stator, support ring, lower stator and rotor. The upper stator includes magnetic dielectric material layer; and layers of insulation support layer are setup on upper surface of the magnetic dielectric material layer. Common electrode is setup at center of surface of the insulation support layer. 8 pieces of moment added electrode for detecting sector and 18 pieces of fan shaped rotating electrode are setup from inner to outer on the insulation support layer. Permanent magnetic material layer is setup at low surface of the magnetic dielectric material layer. Structure of the lower stator is same as to structure of the upper stator. The rotor is a rotor with external teeth or rotor containing inner teeth. Features are: micro power dissipation, small size, no need of manual assembly, high reliability, low cost and batch production.

The invention discloses a wafer rough polishing solution. The wafer rough polishing solution adopts the technical scheme that the polishing solution is prepared by mixing and stirring the following raw materials in percentage by weight: 2 to 50 percent of silicon dioxide abrasive material, 0.2 to 10 percent of pH regulator, 0.1 to 5 percent of chelating agent, 0.01 to 5 percent of surfactant and the balance of deionized water. By adopting the technical scheme, the polishing solution has stable solution performance under the wafer rough polishing application condition, and the polishing speed, polishing uniformity and surface quality can meet the manufacture requirement.

The invention provides a magnetic-suspension wave detector. The magnetic-suspension wave detector comprises a shell, a fixed permanent magnet, a first diamagnetic body, a coil, a second diamagnetic body and a suspension permanent magnet, wherein the fixed permanent magnet, the first diamagnetic body, the coil and the second diamagnetic body are sequentially arranged at the inner part of the shell from top to bottom, the suspension permanent magnet is positioned in the coil, and the magnetic pole magnetisms of the fixed permanent magnet and the suspension permanent magnet facing each other are different. According to the magnetic-suspension wave detector provided by the invention, the gravity born by the suspension permanent magnet can be offset through an attraction force from the fixed permanent magnet to the suspension permanent magnet, and the suspension permanent magnet is guaranteed to be in a stable state through the diamagnetic bodies which are positioned at the upper part and the lower part of the suspension permanent magnet; and when the suspension permanent magnet shifts to optional one direction, a component force of a horizontal direction or a vertical direction of a resulting force born by the suspension permanent magnet is opposite to a shifting direction, thus the suspension permanent magnet can be quickly and accurately attracted to return to a balance position, and the sensitivity and the accuracy of monitoring are increased.

The invention provides a gas-liquid distributor for a three-phase fluidized bed reactor. The gas-liquid distributor is mainly composed of a central pipe, a bell cap, connection legs and a distribution plate, wherein the central pipe is divided into upper and lower sections; a material inlet of the central pipe is formed in the end part of the lower section and a material outlet of the central pipe is formed in the end part of the upper section; a pipe wall which is close to the material inlet is provided with a vertical seam which is communicated with the material inlet; a pore plate mixer is arranged on the lower section of the central pipe; three vertical strip-shaped holes are formed in the upper section of the central pipe; the three connection legs which are arrayed vertically are arranged along the peripheral direction of the inner wall of the bell cap; each connection leg comprises a long arm and a short arm and forms an angle rule shape; the short arms of the connection legs are embedded in the vertical strip-shaped holes and can move up and down along the vertical strip-shaped holes; the bell cap is connected with the upper section of the central pipe by the three connection legs and covers the material outlet; the periphery of the bottom of the bell cap can be fitted with the distribution plate. According to the gas-liquid distributor for the three-phase fluidized bed reactor, gas can be crushed into continuous micro air bubbles in liquid and is uniformly distributed; the problem of reverse flowing and blocking of materials can be effectively solved or relieved.

A magnetic levitation lamp with a stereo function comprises a base for supplying power and a levitation body with a light source, and is characterized in that a USB (Universal Serial Bus) interface, a stereo and a stereo switch are arranged on the base, wherein a lower concave cavity is formed in the upper end of the base; an electromagnet is arranged on the side wall of the lower concave cavity; a perfume cavity is formed in the bottom of the lower concave cavity; an inserting module is further arranged at the bottom of the lower concave cavity; the levitation body has a lower surface matched with the lower concave cavity; a permanent magnet is further arranged in the levitation body; homonymic magnetic poles of the permanent magnet and the electromagnet correspond to each other to generate a repulsive force; an inserting cavity is formed in the position, which corresponds to the inserting module, on the lower bottom surface of the levitation body; a switch of a light-emitting source is arranged in the inserting cavity. When the levitation body is risen, the perfume cavity is exposed and perfume substances in the perfume cavity slowly release fragrance, so that the aim of refreshing air is realized; when music needs to be played, a USB flash disk with audio files can be inserted into the USB interface to play the music.

The invention provides a space mechanical arm suspension microgravity simulation device, which belongs to the field of simulation experiments, and comprises a mechanical swing arm mounting platform, asix-degree-of-freedom table and a camera, a target point on the six-degree-of-freedom table is measured in real time to obtain the position and attitude change of the six-degree-of-freedom table, andthe mechanical swing arm mounting platform is controlled to move along with the six-degree-of-of-freedom table; the mechanical swing arm mounting platform comprises an omni-directional moving platform, a balance weight and a mechanical swing arm bracket; the omni-directional moving platform moves omni-directionally in a plane; a counterweight, which is used for balancing the whole centroid of theomni-directional mobile platform, and a mechanical swing arm, the motion of the mechanical swing arm bracket is used for compensating the motion precision of the full-moving platform. The action of the gravity of the mechanical arm on the posture of the spacecraft when the mechanical arm is unfolded is eliminated, meanwhile, more motion freedom degrees and motion ranges of the mechanical arm arereserved, and the unfolding range of the space mechanical arm is adapted to in a large range.

The invention relates to a nicarbazin and ethopabate nano mixed suspension agent and preparation method thereof, the nano mixed suspension agent of the invention can be administrated by drinking, and the stock solution after being diluted can be evenly dispersed in water and can be kept for stable suspension state, the nano mixed suspension agent has characteristics of convenient administration, reduced waste, ensured dose, increased dissolution velocity of the medicament, increased saturation dissolvability of the medicament, prolonged detention time of the medicament in vivo, improved bioavailability and no blocking of the drinking machine, so that the nicarbazin and ethopabate can sufficiently exert medicament effect when treating the chicken coccidiosis.

The invention discloses a radiation refrigeration coating as well as a preparation method and application thereof. The radiation refrigeration coating is prepared from the following raw material components in percentage by mass: 4%-8% of porous cordierite, 10%-18% of titanium dioxide, 22%-35% of acrylic resin, 0.5%-1.5% of a silane coupling agent, 0.1%-1% of a coalescing agent, 0.1%-1% of a leveling agent, 0.1%-1% of a dispersing agent, 0.2%-1% of an antifoaming agent, 0.1%-2% of a thickener, 0.1%-2% of an anti-flash rust agent and the balance of dipropylene glycol methyl ether acetate, and the radiation refrigeration coating is prepared by mixing the raw materials. The radiation refrigeration coating disclosed by the invention has high sunlight reflectivity and high selectivity and radiance in an atmospheric window, the preparation method has the advantages of simplicity, feasibility, low cost and the like, and meanwhile, a radiation refrigeration coating layer prepared from the coating can realize all-weather refrigeration, has a good refrigeration effect, and has very high use value and application prospect.

The invention discloses a liquid metal solidification in-situ observation device and an observation method under a microgravity state. The device comprises an ultrasonic suspension system and a soundfield visualization system; the ultrasonic suspension system is used for suspending a liquid metal sample in the air, and the sound field visualization system is used for displaying a generated acoustic standing wave field, and observing the change of the acoustic standing wave field in a liquid metal cooling process in the microgravity state in real time. According to the liquid metal solidification in-situ observation device provided by the invention, in-situ observation can be carried out on the solidification process of a liquid metal under the microgravity state.

The invention relates to a compound preparation for preventing and treating poultry liver diseases and a preparation method thereof. The invention well solves the preparation stability problem of silymarin and betaine two medicaments which are effective for poultry liver diseases. The prepared product is nano suspension; and when diluted according to dosage, the product can disperse in water uniformly and keep a stable suspension state. In clinic use, the product has the characteristics of convenient medicament administration, high medicament utilization rate, long in-vivo detention time, no drinking trough blockage and the like. The Chinese and western compound preparation can conduct maximum treatment and health-care effects of eliminating free radicals, promoting liver cell generation, detoxifying and protecting liver.

The present invention provides a lithium ion flow cell electrode suspension liquid and a preparation method thereof. The electrode suspension liquid comprises an electrode active material, an electrolyte, an electric conduction agent, and a vinylidene fluoride-hexafluoropropylene copolymer, wherein the electrolyte comprises a grinding aid, a solvent and a lithium salt. The method comprises: mixing an electrode active material and an electric conduction agent by using a grinding aid having high boiling point and high flash point to obtain a suspending slurry having uniform and coincident components, adding a solvent and a lithium salt to the suspending slurry, and adding a proper amount of an additive vinylidene fluoride-hexafluoropropylene copolymer according to the actual use requirement so as to effectively avoid the agglomeration of the solid particles in the electrode suspension liquid, slow down the particle sedimentation rate, and improve the quality stability of the electrode suspension liquid. According to the present invention, the electrode suspension liquid prepared by the method has advantages of uniform active material particle dispersing and stable quality, and can avoid the safety problem and the quality stability problem possibly caused by the direct application of the electrolyte to prepare the electrode suspension liquid.

Provided is a magnetic levitation lamp capable of being used as an external speaker. The magnetic levitation lamp comprises a base used for supplying power and a levitation body with a luminous source. The magnetic levitation lamp is characterized in that the base is provided with an audio input interface and a speaker, the upper end of the base is provided with a downward concave cavity, the side wall of the downward concave cavity is provided with electromagnets, the bottom of the downward concave cavity is provided with a perfume cavity, the bottom of the downward concave cavity is further provided with an inserting module, the levitation body is provided with the lower surface matched with the downward concave cavity, the levitation body is further provided with a permanent magnet, same polarities of the permanent magnet and the electromagnets correspond to each other to generate repulsive force, the position, corresponding to the inserting module, on the lower bottom surface of the levitation body is provided with an inserting cavity, the inserting cavity is provided with a switch with the luminous source. When the levitation body is levitated, the perfume cavity is exposed, and fragrance of perfume materials inside the perfume cavity is slowly released, so that the air refreshing purpose is achieved. When music is needed to be played, by inserting an audio cable into the audio input interface and the music is played.

The invention discloses an AC / DC three-degree-of-freedom axial monobrid magnetic bearing for a vehicle-mounted flywheel battery. A rotor is coaxially sleeved with a radial stator, a permanent magnet and a single-chip axial stator from top to bottom in sequence. The axial stator is sleeved with a tension disk. The tension disk is coaxially and fixedly connected with the rotor. Three radial stator poles are uniformly arranged on the yoke part of the radial stator in the circumferential direction. A radial control coil is wound around each radial stator pole. The surfaces of the inner ends of the three radial stator poles are arc-shaped cylindrical surfaces. Radial air gaps are reserved between the cylindrical surfaces and the rotor. The axial stator is internally provided with an axial control coil which is attached to the inner wall of the axial stator. An axial air gap is reserved between the lower end face of the axial stator and the inner bottom surface of the tension disk. The annular permanent magnet conducts axial magnetization and is fixedly connected with the lower end of the radial stator and the upper end of the axial stator. The radial stator is of a single-chip structure. The structure of the magnetic bearing is simplified. The mass of the magnetic bearing is reduced. Power consumption is reduced.

The invention discloses a graphene nanosheet modified cement-based material with a piezoresistance effect. The material is prepared from the following ingredients in parts by weight: 0.1-0.24 part by weight of polyacrylate, 0.02-0.3 part by weight of graphene nanosheets, 0.12-0.6 part by weight of a poly carboxylic acid water reducer, 0.3-2 parts by weight of a shrinkage reducing agent, 0.18-2 parts by a weight defoamer, 12-20 parts by weight of water, 40-60 parts by weight of cement and 20-50 parts by weight of fly ash. The invention also discloses a preparation method of the material. The preparation method has simple operation and low cost, and the prepared graphene nanosheet modified cement-based material with the piezoresistance effect has a better piezoresistance effect, better mechanical properties and better unification of economy and practicality.

The invention relates to a coal gasification method of a suspension bed. The method comprises the following steps of: feeding coal powder and a gasification agent from the lower part of a gasification furnace at certain speed and pressure; forming a rotational flow by the coal powder and combusting the coal powder; blowing and agitating the coal powder by using the gasification agent; rapidly gasifying the coal powder part and leading out a mixed gas generated by gasifying the combusted and gasified ash from the upper part of the gasification furnace. The invention also provides a gasification device for the method, which comprises a gasification furnace and a separating device; feeding openings are respectively arranged on the side wall and the bottom of the gasification furnace; the gasification furnace comprises a cylinder and a cone; the cone is arranged on the lower part of the cylinder and the cylinder is connected with the separating device. The device provided by the invention has the advantages of simple structure and high work efficiency. The method and device provided by the invention have the advantages of moderate gasification temperature, low gasification pressure, multiple applicable coals, simple gasification process, low investment, low operation cost and the like, and are especially suitable for manufacturing low-pressure coal industrial gas.

The invention discloses edible printing ink with a mint smell. The printing oil is prepared from, by weight, 1-2 parts of catechu, 1-2 parts of astaxanthin, 0.5-1 part of vitamin C, 20-30 parts of starch, 5-10 parts of creeping oxalis extracting solution, 10-20 parts of food coloring, 20-30 pars of xanthan gum, 20-40 parts of hemp seed oil, 1-2 parts of mint oil, 20-40 parts of fructus momordicae extracting solution and 5-10 parts of water. The printing ink is prepared from the edible materials, no organic solvent is contained, green and environmental protection are achieved, no harm is generated to human health, the printing ink is free of smell of an organic solvent of previous printing ink, the smell is refreshing by adding the mint oil, the edible printing ink is good in fluidity and quick in drying, an antioxidant is added, the color is stable and does not fade after printing, and the edible printing ink with the mint smell can be used for printing industries of food, medicine, cosmetics, paper products and the like.

The invention discloses a gas-liquid distributor for a fluidized bed reactor. The gas-liquid distributor comprises an outer pipe, an inner pipe, a non-return ball and a bubble cap, wherein the outer pipe comprises an upper-section part and a lower-section part, the pipe wall of the lower-section part is provided with a gas inlet and the pipe wall of the upper-section part is provided with an outer pipe opening; the middle position in the inner pipe is provided with a diameter-variable channel; the lower port of the inner pipe is provided with a pore plate, and the pipe wall of the upper end part of the inner pipe is provided with an inner pipe opening; when the inner pipe is inserted in the upper-section part of the outer pipe, the inner pipe and the upper-section part form a sleeve part; the inner pipe opening is aligned with the outer pipe opening to form a gas passing channel; the non-return ball is located on the upper end of the diameter-variable channel and is hermetically matched with the hole wall of the diameter-variable channel; and the bubble cap sleeves the outer side of the sleeve part, an annular channel is formed by enclosure of the bubble cap and the outer wall of the upper-section part, and the lower end of the bubble cap is provided with an opening. The gas-liquid distributor is uniform in gas-liquid mixing, greatly flexible in operation, simple and rational in structure and safe and durable to use.

The invention provides an emulsion stabilizer containing bacterial cellulose. The emulsion stabilizer containing bacterial cellulose is prepared from the following ingredients in percentage by weight:9-21% of bacterial cellulose, 5-10% of soybean saccharine, 3-9% of anthrax gum, 6-12% of sodium carbohydrate cellulose, 7-21% of sucrose ester, 20-50% of glycerin monochromatic ester and 1-41% of extramarital. The invention also provides a cocoa milk beverage containing the emulsion stabilizer. The cocoa milk beverage contains the following ingredients in percentage by weight: 0.5-2.0% of alkalies medium fat cocoa, 2.0-8.0% of full cream milk powder, 3.0-10.0% of white sugar, 0.04% of calcium, 0.1-1% of an emulsion stabilizer, 0.01-0.05% of milk flavor, 0.03-0.1% of chocolate essence, and thebalance of water. The emulsion stabilizer is capable of not only effectively preventing cocoa and protein in the cocoa milk beverage from being precipitated, but also preventing calcium from being precipitated, preventing fat in the cocoa milk beverage from floating up, and further preventing precipitation caused by high-temperature sterilization.

The invention provides an emulsifying stabilizer containing bacterial cellulose. The emulsifying stabilizer includes the following components in percentages by weight: 9-21% of bacterial cellulose, 3-9% of xanthan gum, 6-12% of carboxymethylcellulose sodium, 7-14% of sucrose ester, 20-50% of monoacylglyceride and 1-42% of maltodextrin. The invention also provides a coffee milk beverage containingthe emulsifying stabilizer. The coffee milk beverage includes the following components in percentages by weight: 0.5-3.0% of coffee, 0.04-0.16% of baking soda, 2-5% of creamer, 1-4% of whole milk powder, 3-9% of white granulated sugar and 0.1-1% of the emulsifying stabilizer, with the rest being water. The emulsifying stabilizer can not only effectively prevent the coffee and protein precipitation in the coffee milk beverage, but also prevent the fat floating in the coffee milk beverage, and can further prevent the coffee and protein precipitation caused by high temperature sterilization.

The invention discloses a device and a calibration method of the indoor OBS dynamic and continuous calibration suspended sediment concentration. The device comprises a sampling device and a suction filtration device, wherein the sampling device comprises a calibration groove, an OBS-3A turbidimeter supporting frame, an OBS-3A turbidimeter, a turbine, an aqueduct, a sampling bottle, and a samplingvacuum pump, the OBS-3A turbidimeter is vertically arranged above the calibration groove through the OBS-3A turbidimeter supporting frame, the turbine is arranged at the bottom of the calibration groove, one end of the aqueduct extends into the calibration groove, the other end of the aqueduct communicates with the interior of the sampling bottle, and the upper end of the sampling bottle is connected with the sampling vacuum pump. According to the device and the calibration method, the water sampling collection process close to an OBS probe is improved, the improved device can effectively improve the working efficiency, at the same time, the testing accuracy is improved, according to the device, after a high concentration suspended sand water body is added, sediment in the water body is ina stable suspended state due to the stirring action of the bottom turbine, and convenience is provided for reading OBS results and extracting water samples.

The present invention provides a lithium ion flow cell electrode suspension liquid and a preparation method thereof. The electrode suspension liquid comprises an electrode active material, an electrolyte, an electric conduction agent, and a vinylidene fluoride-hexafluoropropylene copolymer, wherein the electrolyte comprises a grinding aid, a solvent and a lithium salt. The method comprises: mixing an electrode active material and an electric conduction agent by using a grinding aid having high boiling point and high flash point to obtain a suspending slurry having uniform and coincident components, adding a solvent and a lithium salt to the suspending slurry, and adding a proper amount of an additive vinylidene fluoride-hexafluoropropylene copolymer according to the actual use requirement so as to effectively avoid the agglomeration of the solid particles in the electrode suspension liquid, slow down the particle sedimentation rate, and improve the quality stability of the electrode suspension liquid. According to the present invention, the electrode suspension liquid prepared by the method has advantages of uniform active material particle dispersing and stable quality, and can avoid the safety problem and the quality stability problem possibly caused by the direct application of the electrolyte to prepare the electrode suspension liquid.

The invention relates to a permanent magnet outer rotor aerator which comprises a stirring piece and a suspension piece. The stirring piece is connected with and arranged in a water area below the suspension piece; an impeller is assembled at the bottom of the stirring piece; a motor is arranged in the stirring piece in a sealing manner; the motor drives the impeller to stir water; the suspensionpiece realizes a stable operation posture in water by utilizing a floating ball which is unfolded in a central symmetry manner; and the floating ball adopts a double-layer structure, and a buoyancy block is arranged at the interlayer, so that semi-inflatable launching can be realized, the shore volume of the permanent magnet outer rotor aerator is effectively controlled, and the carrying difficulty is reduced.

The invention discloses a water-based graphene dispersion liquid and a preparation method thereof, and belongs to the technical field of graphene modification. The water-based graphene dispersion liquid is a durable stable dispersion liquid prepared by taking single-layer and / or double-layer and / or multi-layer nano graphene as a raw material to carry out a reaction with a chelating-type titanate under the action of ultrasonic waves and mechanical stirring. The water-based graphene dispersion liquid prepared by the preparation method is good in dispersion liquid stability, and no sedimentationphenomenon occurs when the dispersion liquid is placed for 30 days; the dispersion liquid is low in viscosity and good in liquidity, the dispersion medium is water, and no polymer is added or generated, so that the application field is wide; the preparation process of the dispersion liquid is simple, the reaction is mild, the modification time is short, and industrial application is easier; the dispersion liquid is an environment-friendly product, no harmful impurities are introduced in the preparation process, and a used coupling agent can be wound or bonded with a composite material to forma whole substance in subsequent processing.