34results about "Material granulation and coating" patented technology

The invention discloses straw carbon-based carbon particles and a manufacturing device and method, and relates to the technical field of agricultural ecological environmental protection equipment.The method comprises the following steps that S1, straw is subjected to component separation treatment, and a liquid component, a carbonized precursor rich in lignin and a fiber base material containing cellulose are obtained; s2, performing carbonization treatment on the carbonized precursor to obtain biochar; dissociating the fiber base material to obtain a fiber inner core material; s3, the liquid component serves as an adhesive, the fiber inner core material serves as a particle inner core, biochar serves as a coating outer layer, and carbon particles of a core-shell structure are prepared through a forming technology. Straw is subjected to component separation before carbonization, directional utilization of all components of straw is achieved, compared with an existing mode that straw is directly carbonized and returned to the field, the carbon particles are more environmentally friendly, and the cost is reduced. The carbon particles prepared by the method are beneficial to subsequent fermentation and field application, can reduce the risk of secondary pollution such as dust raising, are beneficial to regulation and control of the soil carbon release process, and improve the comprehensive utilization efficiency of straws.

The invention discloses a raw material stirring device for feed production, and relates to the technical field of feed processing equipment.The raw material stirring device comprises a stirring container, a feed stirring mechanism, a material curtain forming mechanism and a spraying mechanism, the stirring container sequentially forms an upper-layer stirring cavity, a spraying cavity and a lower-layer stirring cavity which are communicated from top to bottom, and a long-strip-shaped opening is formed in the bottom of the upper-layer stirring cavity; the feed stirring mechanism comprises an upper-layer stirring assembly and a lower-layer stirring assembly; the material curtain forming mechanism comprises a driving assembly and a plugging piece; the spraying and attaching mechanism comprises an auxiliary material spraying pipe and an auxiliary material spraying head. According to the invention, the trace auxiliary material is converted into a solution from a solid form, the solution is sprayed and attached to the main material curtain in a form of fine liquid drops through the spray head, diffusion mixing of trace solid particles in a large amount of solids is converted into coating distribution of the liquid drops on the surfaces of a large amount of particles, and the diffusion difficulty is greatly reduced; each main material particle has a large probability to be in contact with the auxiliary material liquid drops when penetrating through the material curtain area, and therefore high-uniformity distribution is achieved.

The invention relates to the technical field of solid composition processing, and particularly provides an instant solid composition in a synergistic state and a special system and method for preparing the composition. The synergistic state is cooperatively defined by three objective indexes, namely the dissolution rate of index components is not lower than 85%, the complete dispersion time in hot water at 90 DEG C does not exceed 60 seconds, and the maximum fluctuation range of a bitter taste response value of the brewing liquid in an electronic tongue test does not exceed 25% of an initial response value. The composition is prepared from functional raw material ultrafine powder, a release regulation and control system constructed by an embedding technology, and an instantaneous dispersant with a specific mass ratio. The invention also provides a special preparation system, which ensures high reproducibility of the synergistic state through serialized integration of a low-temperature superfine grinding device, an acoustic resonance mixing device, a compression molding device and a dynamic microwave vacuum drying device. According to the technical scheme, all technical units are systematically integrated, so that the problem that the high dissolution rate and rapid dispersion of the target component in the instant solid composition are difficult to cooperate with the release stability of the non-target component is effectively solved.

This application relates to a powder coating device. The powder coating device includes a fluidizing mechanism, a gas distribution mechanism, an inlet pipe, and a discharge device. The fluidizing mechanism has a fluidizing chamber. The gas distribution mechanism has a gas distribution chamber and is located within the fluidizing mechanism. A gas chamber is formed between the gas distribution mechanism and the fluidizing mechanism. The gas distribution mechanism has ventilation holes that connect the gas chamber and the gas distribution cavity. The inlet pipe communicates with the gas chamber. The discharge device is connected to the fluidizing mechanism and has a discharge port that communicates with the gas distribution cavity. In this application, the gas distribution mechanism is located inside the fluidizing mechanism, and the discharge device is located at one end of the fluidizing mechanism, allowing the fluidized powder to flow out from the discharge device. Compared to a scheme where the discharge device and the gas distribution mechanism share the same area, separating the discharge device from the gas distribution mechanism allows the ventilation holes on the gas distribution mechanism to not restrict the discharge area, thereby improving the discharge efficiency of the discharge device.

The present invention relates to a multi-material powder with composite particles for additive synthesis, comprising carrier particles having a median particle size distribution d50 of 1 μm to 100 μm and functionalized particles having a median particle size distribution d50 that is 10 to 1000 times lower than that of the carrier particles. According to the present invention, the carrier particles and the functionalized particles form composite particles having a core-shell structure, each composite particle having a core formed by the carrier particles and a shell formed by the functionalized particles covering 10% to 100% of the surface of the carrier particles and consisting of at least one surface layer.

The invention discloses a preparation system of a core-shell structure nano-micron radioactive logging tracer agent, which comprises a water phase preparation device, an oil phase preparation device, a balling device, a liquid circulating device and an organic coating device, and is characterized in that the water phase preparation device, the oil phase preparation device, the balling device, a circulating liquid storage tank and the organic coating device are connected through pipelines and valves; radioactive substances are prevented from leaking; according to the invention, radionuclide (such as iodine-131) is chemically embedded in the inner core of the tracer by adopting a core-shell structure design, so that the dissolution loss rate of radioactive isotopes is obviously reduced; the uniform preparation of the tracing microspheres is realized based on a micro-fluidic precise control technology; the physical embedding and chemical coating double barrier obviously improves the environmental safety of underground products.

To provide a device and a method for coating powder and a device and a method for dispersing powder capable of improving the dispersibility of powder and the efficiency of coating treatment.SOLUTION: A coating device 1 comprises a dispersing / mixing part 2, a conveying part 3, and a collecting part 4. A raw material powder and a coating liquid are supplied to the dispersing / mixing part 2 in the form of a slurry. In the dispersing / mixing part 2, the slurry (mixture) in which the raw material powder and the coating liquid have been mixed is dispersed by an air flow of a high pressure fluid into a powder having a film of the coating liquid adhering to its surface. The powder is introduced from the dispersing / mixing part 2 to the conveying part 3 and is conveyed through the conveying part 3 toward the collecting part 4. During this conveyance, the coating liquid adhering to the particle surfaces dries, producing a powder in which the particle surfaces are coated with a precursor. A powder flow introduced into the collecting part 4 passes through a bag filter 54. This causes the powder to be captured by the bag filter 54.SELECTED DRAWING: Figure 1

The invention provides an automatic spherical particle forming system which comprises a material supply unit, a forming unit, a forming control unit and an on-line moisture detector, the material supply unit is used for continuously supplying materials to the forming unit, and the on-line moisture detector is used for detecting moisture of semi-finished products output by the forming unit; the forming control unit is used for receiving a detection result of the online moisture detector and controlling the spraying amount of the wetting agent in the forming unit according to the detection result. The material supply unit continuously supplies materials to the forming unit, the online moisture detector detects the moisture of the semi-finished product output by the forming unit, and the forming control unit receives the detection result of the online moisture detector and timely corrects the spraying amount of the wetting agent in the forming unit according to the detection result. And the consistency of the moisture content of the produced green pellets is ensured.

This coating device 1 comprises a dispersing / mixing part 2, a conveying part 3, and a collecting part 4. A raw material powder and a coating solution are supplied to the dispersing / mixing part 4 as a slurry. In the dispersing / mixing part 2, the slurry (mixture) in which the raw powder and the coating solution have been mixed is dispersed by means of an air flow of a high-pressure fluid into a powder, a film of the coating solution having adhered to the surface of the powder. The powder is introduced from the dispersing / mixing part 2 to the conveying part 3t and is conveyed with the conveying part 3 oriented toward the collecting part 4. While the powder is being conveyed, the coating solution that has adhered to the particle surfaces dries, whereby a powder in which the particle surfaces areas coated with a precursor is produced. A powder flow introduced into the collecting part 4 passes through a bag filter 54. This causes the powder to be captured by the bag filter 54.

A method of producing a particle coating on one or more items is provided. The method comprises mixing a supercritical fluid with a solution comprising dissolved material for forming particles. The method further comprises spraying the mixture into a precipitation chamber (316) to precipitate particles, wherein the chamber is at a pressure below a supercritical pressure of the supercritical fluid. The method comprises conveying items to be coated from an inlet of the chamber to an outlet of the chamber. The method also comprises capturing the precipitated particles on items within the chamber.

This coating device comprises dispersing / mixing part, conveying part, and collecting part. A raw material powder and a coating solution are supplied to the dispersing / mixing part as a slurry. In the dispersing / mixing part, the slurry (mixture) of the raw powder and the coating solution is dispersed by air flow of a high-pressure fluid into a powder, a film of the coating solution having adhered to the surface of the powder. The powder is introduced from the dispersing / mixing part to the conveying part and is conveyed with the conveying part oriented toward the collecting part. While the powder is being conveyed, the coating solution that has adhered to the particle surfaces dries, whereby a powder in which the particle surfaces are coated with a precursor is produced. A powder flow introduced into the collecting part passes through a bag filter, causing the powder to be captured by the bag filter.

The invention provides a coating machine. The coating machine comprises a supporting frame, a barrel body, a bottom barrel, an air inlet pipe and a discharging pipe, the barrel body is connected with the supporting frame, the bottom barrel is communicated with the bottom end of the barrel body, and the air inlet pipe and the discharging pipe are both communicated with the bottom barrel; a ventilation net plate is arranged at the bottom end of the barrel body, a rotating shaft rod is connected to the ventilation net plate, the ventilation net plate and the barrel body are arranged in a rotating mode through the rotating shaft rod, an overturning assembly is arranged on the barrel body, and the overturning assembly drives the ventilation net plate to rotate through the rotating shaft rod. The ventilation net plate is inclined, products fall into the bottom cylinder along the ventilation net plate, and the discharging pipe is used for discharging the products. Product discharging can be facilitated, the risk that products are polluted is reduced, and the production efficiency is improved.

The invention belongs to the technical field of pet deodorization, and discloses a sterilization deodorant for pets and a preparation method. The pet sterilization deodorant is in a particle shape of a core-shell structure, a shell layer is a porous antibacterial film, and an inner core is a particle material loaded with natural antibacterial components; the porous antibacterial film is prepared from the following raw materials: chitosan, a silane modifier, polyethylene glycol, ammonium bicarbonate, nano zinc oxide and tea polyphenol. According to the sterilization deodorant for the pets and the preparation method of the sterilization deodorant, the core-shell structure design is combined with the porous antibacterial film and the natural antibacterial core, the synergistic effect of physical adsorption and chemical bacteriostasis is achieved, and the sterilization deodorant has the advantages of efficient sterilization, lasting deodorization, safety, environment friendliness and multiple functions; the preparation cost is low, the preparation process is simple, and good popularization and application values are achieved.

The present invention discloses a granulation method for a difficult-to-bond iron-based inorganic powder material, comprising the following steps: 1) determining the chemical composition and zeta potential of the iron-based active component, particle size, and auxiliary materials of the powder raw material; 2) mixing the iron-based active component with the auxiliary materials according to the absolute value of the zeta potential and the properties of the powder raw material to obtain a mixed powder; 3) then bonding the mixed powder to a carrier under the action of capillary water to form a material core with the carrier as the core; 4) granulating the material core to obtain iron-based slow-release particles. The iron-based slow-release particles obtained by the method of the present invention have high strength, low cost, less waste, are easy to produce, are not easy to pulverize and agglomerate, are resistant to transportation and storage, and have a good slow-release effect. They can be applied to various fields such as fertilizer production, chemical engineering, groundwater and soil remediation.

The invention discloses a method for realizing cyclic coating of powder by a composite fluidization process. The coating method comprises the following steps: S1, preparing a coating solution; s2, fluidizing gas is introduced; s3, heating the fluidized bed (as required); s4, feeding and fluidizing through ultrasonic vibration; s5, atomizing and spraying the coating solution; s6, carrying out cyclone separation on the primary coated powder; s7, dynamically drying the primary coated powder; s8, vibrating, feeding and fluidizing the primary coated powder again; s9, coating the powder for the second time; and S10, circulating the steps S6 to S9. According to the coating method, circulating continuous coating of the powder can be achieved, meanwhile, the powder is dispersed and distributed in the fluidized bed in a composite fluidization mode combining ultrasonic vibration and gas fluidization, and then a coating layer is more uniform.

The invention relates to the technical field of battery material granulation, in particular to granulation equipment for producing an integrated multi-phase coated lithium battery negative electrode material, which comprises a support table and a stirring tank fixed on the support table, a top bracket is fixed on the stirring tank, and a pumping cylinder is fixed on the top bracket; the first transmission rod is rotationally installed on the top support, an air supply hole is formed in the circumferential outer wall of the first transmission rod, a conveying pipe is fixed to the first transmission rod, and a feeding hole is formed in the circumferential outer wall of the conveying pipe; the transfer pipe is fixed to the top support, and a centrifugal switching mechanism connected with the conveying pipe is arranged on the transfer pipe; the triggering transmission assembly is arranged on the pumping cylinder and connected with the centrifugal switching mechanism, a rotating disc is connected to the triggering transmission assembly, and an arc-shaped protrusion is fixed to the rotating disc; and the two-way pumping mechanism is arranged in the pumping cylinder, and when the rotating speed of the first transmission rod is changed, the gas-liquid phase coating state can be automatically adjusted through the centrifugal switching mechanism, so that it is guaranteed that materials are completely coated.

The invention discloses a preparation device of fragrant slow-release colorful spherical particles. The preparation device comprises a heating material preparation device, a constant-temperature dripping device, a low-temperature forming device, a screening dryer, a rotary coloring device and a sealing storage device which are connected in sequence. The invention further discloses a preparation method of the preparation device for the perfumed slow-release colorful spherical particles and application of the obtained perfumed slow-release colorful spherical particles in cigarettes. The device is formed by self-assembly, and the cost is low. According to the method, the production efficiency is improved, the fragrance carrying efficiency of the particles is improved, the mechanical strength of the particles is improved, and the slow release effect of the particles is enhanced. When the obtained perfumed slow-release particles are used in cigarette filters, the flavor feeling of cigarette smoke is remarkably improved, and different color feelings are brought to smokers by the perfumed colored particles.

The invention provides ceramic shell expanded perlite as well as a preparation method and application thereof, and the preparation method comprises the following steps: pretreating perlite ore to obtain first perlite particles; proportioning the first perlite particles and a binder according to a mass ratio, and uniformly mixing the first perlite particles and the binder to obtain second perlite particles; respectively adding vitreous cladding powder and ceramic cladding powder into the second perlite particles in sequence, and granulating to obtain A-type third perlite particles and B-type third perlite particles in sequence; carrying out drying and preheating treatment on the B-type third perlite particles to obtain fourth perlite particles; and carrying out high-temperature expansion treatment on the fourth perlite particles to obtain the ceramic shell expanded perlite. Compared with common expanded perlite, the expanded perlite with the ceramic shell has higher expansion times, mechanical strength and sound absorption rate and lower water absorption rate, slurry absorption rate and heat conductivity coefficient, and can be used for producing light materials, heat preservation and insulation materials, sound absorption and insulation materials and fireproof and flame-retardant materials and replacing floating beads, light or expanded ceramsite and the like.

The invention provides a granulating and coating machine for online utilization of dust filtering materials, and belongs to the technical field of traditional Chinese medicine processing, and the granulating and coating machine comprises a supporting seat, a lower-section cylinder body, a middle-section cylinder body, an upper-section cylinder body and a dust filtering mechanism. Wherein the supporting seat is integrally provided with an operation cabinet and a gas circuit box, so that the integrated layout of equipment control and gas circuit supply is realized; the lower-section barrel is arranged on the supporting seat, a rotating disc and a hot air pipe are assembled in the lower-section barrel, the hot air pipe is communicated with a heat source gas supply device and used for introducing constant-temperature hot air into the barrel, and the rotating disc is of an arc transition type structure with the middle protruding; and the two movable liquid spraying guns are symmetrically embedded in the side walls of the two ends of the lower-section cylinder body, are used for being connected with a coating liquid supply device and can be used for accurately spraying the coating liquid to the materials. The device can realize on-line recycling of dust filtering materials, reduces waste of medicine powder, optimizes the structure of the rotating disc to enable the materials to form an efficient annular flowing track, and greatly improves the contact uniformity of the materials with coating liquid and constant-temperature hot air.

Microstructured composite particles obtainable by a process in which large particles are combined with small particles, wherein: - the large particles have a mean particle diameter in the range of 0.1 µm to 10 mm, - the mean particle diameter of the small particles is at most 1 / 10 of the mean particle diameter of the large particles, - the large particles comprise at least one polymer, - the small particles comprise at least one calcium salt, - the small particles are arranged on the surface of the large particles and / or inhomogeneously distributed within the large particles, characterized in that the large particles comprise at least one resorbable polyester with a number-average molecular weight in the range of 500 g / mol to 1,000,000 g / mol.The composite particles are preferably used as an additive, in particular as a polymer additive, as an additive material or starting material for the manufacture of components, for applications in medical technology and / or in microtechnology and / or for the manufacture of foamed objects.

The invention discloses a magnetic well logging tracer agent and a preparation method and application thereof. The preparation method comprises the following steps that 1, 1-20 parts of an iron-cobalt-nickel magnetic material, 70-90 parts of light material powder and 1-10 parts of filler are added into a high-speed mixer according to the proportion to be mixed for use; weighing the mixture, adding the mixture into a mixing granulator, starting stirring, adding 5-30 parts of a binder solution, and continuing stirring until the magnetic microsphere particles grow to the required size; 2, spraying and adhering a low-density light material with strong adhesion to one end of the magnetic microsphere through a microsphere single-side exposure spraying technology, and fusing the low-density light material with the magnetic microsphere; and step 3, after the single-side exposure spraying of the microspheres, carrying out magnetization treatment on the magnetic microspheres in the single-side exposure spraying device of the microspheres. The technical problems that magnetic domains of magnetic microspheres in underground fluid are disordered and signals are mutually counteracted are effectively solved, the magnetic field signal intensity is amplified, the signal-to-noise ratio is improved, and real-time, high-precision and environment-friendly monitoring of oil and gas underground fluid migration is achieved.

The invention relates to expandable silica particles. The present invention relates to expandable silica particles comprising 50 to 98% by weight of silica powder, 0.85 to 10% by weight of at least one expanding agent, and 0.01 to 10% by weight of silica fume. The expandable silica particle further comprises a coating provided on an outer surface of the expandable silica particle, wherein the coating comprises kaolin powder and talc powder.

The invention relates to the field of medicine preparation equipment, discloses a multi-dosage-form adaptive efficient coating pan for water-based enteric-coated resin medicines, and aims to solve the problems of poor coating uniformity and low drying efficiency of existing related equipment. The coating pan comprises an airtight tank, a rotary coating pan is arranged in the tank, and spiral stirring blades are arranged on the inner wall of the rotary coating pan; a diaphragm vacuum pump and a servo motor are mounted at the bottom of the tank, the servo motor can drive the rotary coating pan to rotate and the diaphragm vacuum pump to operate to form a negative pressure environment, a metal feeding pipe penetrates through a sealing cover at the top of the tank, a coating material pipe and a hot air pipe are integrated in the metal feeding pipe, and a double-channel electromagnetic valve and an air heating tank are externally connected; a coating material injection pipe and a hot air injection pipe are symmetrically arranged on the side edge of the metal feeding pipe, fan-shaped nozzles are arranged at the tail ends, and a stirring rod is further arranged at the lower end of the metal feeding pipe; the equipment is suitable for various medicine dosage forms, can improve the coating uniformity and the drying efficiency, and has the advantage of energy conservation.

The invention belongs to the technical field of environmental groundwater remediation, and discloses an oxygen-releasing agent sustained-release material as well as a preparation method and application thereof. Comprising sustained-release particles and a coating layer wrapping the surfaces of the sustained-release particles. The slow-release particles comprise an oxygen release agent and an embedding agent, the embedding agent comprises clay minerals, silicon-aluminum industrial waste residues and a binder, and the coating layer is a water-soluble polymer material layer. The preparation method comprises the following steps: uniformly mixing the oxygen release agent, the clay mineral and the salic industrial waste residue in proportion, adding a binder aqueous solution, and stirring to obtain a wet blank; granulating the wet blank into granules, and drying and shaping to obtain sustained-release granules; the preparation method comprises the following steps: preparing a coating solution, putting the sustained-release particles into a coating machine, spraying the coating solution on the surfaces of the sustained-release particles by using a spray gun under the condition of continuous rotation, and drying and curing to obtain the oxygen-releasing agent sustained-release material. The slow-release material is reasonable in formula, wide in raw material source, low in cost, simple and feasible in preparation method and convenient to operate, and can be applied to remediation of polluted groundwater.

[Problem to be Solved] To provide a simple method for obtaining organically modified oxide fine particles with enhanced dispersibility in solvents by enabling uniform organic modification of oxide particles through a common technique applied across the entire surface, regardless of the type of oxide. [Solution] The present invention relates to a method for producing organically modified oxide fine particles. This method comprises a hydroxide or similar formation step of forming hydroxide and / or oxyhydroxide on the surface of oxide particles; and an organic modification step of organically modifying the oxide particles having the hydroxide and / or the oxyhydroxide formed on their surface in a reaction field of a supercritical, subcritical, or gas-phase aqueous solvent to obtain organically modified oxide fine particles. In the fine particles, as measured by Fourier Transform Infrared Spectroscopy (FT-IR), the ratio PI2 / PI1 of the maximum peak intensity PI2 in the closed interval with 3,000 cm-1 and 3,700 cm-1 as both ends, which is attributed to O-H, to the maximum peak intensity PI1 in the closed interval with 2,800 cm-1 and 3,000 cm-1 as both ends, which is attributed to C-H, is preferably 0.01 or more.

The present application relates to the field of pharmaceutical equipment, and discloses a water-soluble enteric resin medicine multi-dosage form adaptive efficient coating pan, aiming at solving the problems of poor coating uniformity and low drying efficiency of the existing related equipment; the coating pan comprises an airtight tank, a rotary coating pan is arranged in the tank, and helical stirring blades are arranged on the inner wall of the rotary coating pan; a diaphragm vacuum pump and a servo motor are mounted on the bottom of the tank, the servo motor can drive the rotary coating pan to rotate and the diaphragm vacuum pump to operate to form a negative pressure environment, a metal feeding pipe is penetrated through the sealing cover at the top of the tank, a coating material pipe and a hot air pipe are integrated in the metal feeding pipe, a double-channel electromagnetic valve and an air heating tank are connected outside, symmetrical coating material injection pipes and hot air injection pipes are arranged on the side of the metal feeding pipe, and the ends of the pipes are all fan-shaped nozzles, and stirring rods are further arranged at the lower ends of the pipes; the equipment is adaptive to various medicine dosage forms, can improve the coating uniformity and drying efficiency, and has the advantages of energy saving.

The invention relates to the technical field of urea processing, in particular to a repairing device and method for irregular large-particle urea, and the device comprises a preheating polishing machine, a guniting repairing machine, a screening machine and a cooling polishing machine which are arranged in sequence; the preheating polishing machine comprises a first polishing rotating barrel and a heating station, and hot air is blown into the feeding end of the first polishing rotating barrel through the heating station. The guniting repairing machine comprises a guniting repairing rotary barrel and a high-pressure guniting system, and liquid urea is sprayed to the surfaces of urea particles with'convex thorns' and'concave pits' in the guniting repairing rotary barrel through the high-pressure guniting system; screening particles with different particle sizes by a screening machine; and the cooling polishing machine further rounds the particles which are screened by the screening machine and meet the requirements. The method comprises the working procedures of preheating and polishing, guniting and pit filling, screening and cooling and polishing, repairing of irregular large-particle urea is achieved, the quality and the appearance of urea particles are improved, meanwhile, the production efficiency is improved, and the energy consumption and the production cost are reduced.

The present disclosure concerns expandable silica particles having a coating comprising talc powder and kaolin powder provided on the outer surface of the expandable silica particle and expandable and expanded silica particles comprising silica fume and / or ultrafine quartz silica sand beneath the surface of the particles. Methods for producing expandable and expanded silica particles are disclosed, including a method using a vibration plate and a furnace having a vibration plate for carrying out that method. The expanded silica particles have high compressive strength, substantially uniform cell size and distribution, low water absorption, and low porosity on the outer surface. They are useful as a filler in matrix materials, like concrete or epoxy, as insulation material with various binder materials, and as water filtration medium.

The present invention relates to the technical field of the preparation of multilayer dripping pills. Disclosed are a dripping nozzle for preparing a multilayer dripping pill, a production system, and a production method. The dripping nozzle comprises an inner-layer material conduit, a middle-layer material conduit, and an outer-layer material conduit. A middle-layer material delivery channel is provided between the middle-layer material conduit and the inner-layer material conduit, and an outer-layer material delivery channel is provided between the outer-layer material conduit and the middle-layer material conduit. The inner-layer material conduit is in communication with an inner-layer material delivery pipe, and the inner-layer material delivery pipe is arranged in an inner-layer constant-temperature liquid heat preservation chamber. The middle-layer material delivery channel is in communication with a middle-layer material delivery pipe, and the middle-layer material delivery pipe is arranged in a middle-layer constant-temperature liquid heat preservation chamber. The outer-layer material delivery channel is in communication with an outer-layer material delivery pipe, and the outer-layer material delivery pipe is arranged in an outer-layer constant-temperature liquid heat preservation chamber. The present invention can keep the temperatures of the materials at the respective layers different and constant, and enables synchronous and uniform discharge of the materials at the respective layers in a reasonable proportion at the outlet of the dripping nozzle, thereby producing a multilayer dripping pill with a better effect.

The application discloses a graphite negative electrode material continuous coating granulation production device and method, and belongs to the technical field of granulation production. The device comprises a machine shell, a feeding inlet is fixedly installed on the top surface of the machine shell, a machine door is hinged to the outside of the machine shell, and a grinding inner shell is fixedly installed in the machine shell. In the application, a grinding assembly, a driven assembly and a mixing and coating mechanism are arranged in a matched mode. Through the combination of various structures, the grinding process of graphite material and the subsequent coating process of graphite material are organically combined together, different operation steps can be completed at the same time, the overall process flow is simplified, the equipment cost is reduced, the operation space utilization is improved, the moving and mixing treatment of the material can be realized, the uniformity and effectiveness of material mixing and coating can be effectively improved, some wall-hung materials can be introduced, the waste of materials is avoided, and the practical application effect of the overall equipment is greatly improved.