788results about "Granulation by material expression" patented technology

The present invention relates to a porous composite feedstock for metal chloride preparation, comprising a metal oxide containing material,; and / or a first additive; and a binder; wherein the porous composite feedstock is in particulate form; wherein the water content of the porous composite feedstock is in the range of from 0.01 to 5 wt.% based on the weight of the porous composite feedstock; and wherein the porous composite feedstock has a poured bulk density in the range of from 0.2 g / cm3 and 2.0 g / cm3.

The invention provides a prepolymerization reactor, a continuous bulk polymerization system and method and PMMA resin. The method comprises the following steps: mixing accurately metered polymeric monomers and auxiliaries, sequentially completing a prepolymerization reaction and a polymerization reaction in serially connected polymerization reactors, and then devolatilizing and granulating a polymerization product to obtain PMMA resin, and comprises the following steps: step 1, purifying and mixing reaction materials; step 2, prepolymerization reaction; step 3, polymerization reaction; step 4, devolatilization; and step 5, granulating. The method overcomes the defects that in the prior art, the polymerization conversion rate is low, the solvent usage amount is large, the molecular weight distribution of the product is wide, light transmittance and other properties cannot meet optical-grade application requirements, and the quality is difficult to accurately regulate and control. Through optimization of a formula and process conditions, a special process system design and combination of polymerization reactors, the contradiction between high conversion rate in the polymerization process and narrow molecular weight distribution of a PMMA product is solved; under the conditions of low solvent addition amount or no solvent, the high conversion rate is obtained, the molecular weight distribution of the polymerization product is narrow, the molecular weight is controllable, and the high-quality optical-grade PMMA resin product is obtained.

The invention provides a perfluoroethanone microcapsule and a preparation method thereof, and belongs to the technical field of fire extinguishing materials, the perfluoroethanone microcapsule comprises a core and a shell layer; the core comprises perfluorohexanone and fumed silica; the shell layer comprises isophorone diisocyanate, diethylenetriamine and a chlorine-containing monomer, and the isophorone diisocyanate, the diethylenetriamine and the chlorine-containing monomer are subjected to an interfacial polymerization reaction to form a polyurea-polyurethane hybrid network; the mass ratio of the shell to the core of the microcapsule is 1: (5-20); the anhydrous microcapsule core is constructed through an oil-in-oil type anhydrous interfacial polymerization system, so that the hydrolysis side reaction is fundamentally avoided, the microcapsule has higher stable encapsulation efficiency, and the reliability and long-term effectiveness of the product in the storage and use processes are ensured.

The invention discloses a lithium hydroxide granulation process of a carbon dioxide absorbent, and relates to the technical field of lithium hydroxide granulation, uniform particle size distribution is beneficial to dispersion and reaction uniformity in the subsequent processing process, the problem of inconsistent product performance caused by particle size difference is avoided, and the test of a universal material testing machine shows that the lithium hydroxide granulation process can be used for preparing lithium hydroxide granules. The average compressive strength of the prepared lithium hydroxide particles is 5N / particle, and the lithium hydroxide particles have better mechanical strength, are not easy to break in the storage, transportation and industrial processing processes, can effectively reduce the generation of dust, reduce the risk of environmental pollution, ensure the quality stability of the product and meet the basic requirements on the particle strength in actual production. After the product is placed in an environment with the humidity of 70% for 24 hours, the weight gain rate of the particles is increased by 50-70%, and compared with ungranulated powdery lithium hydroxide, the hygroscopicity is remarkably improved, which is benefited from the micropore loose structure of the particles and the protective effect of the binder, the storage stability of the product in a humid environment is effectively improved, and the absorption function of the product on carbon dioxide in air is increased.

The application discloses a kind of biodegradable material's double screw extruder, specifically relates to the field of double screw extruder, including main mechanism, vertical center line position of main mechanism is fixedly installed for the pretreatment mechanism of raw material is pretreated, the inner cavity of pretreatment mechanism is equipped with second filtering mechanism, main mechanism includes first protective shell, the both ends of first protective shell are fixedly connected with second protective shell, and the bottom of two second protective shells is opened with the outlet of the form through the form, first processing roller shaft and second processing roller shaft are rotatably connected between two second protective shells respectively.The first spiral pressing plate and the second spiral pressing plate are set in opposite directions, which can disperse the processing of the raw materials from the center of the first protective shell to both sides, thereby more effectively improving work efficiency and effectively avoiding the problem of slow processing rate caused by traditional material accumulation in the inlet.

The invention discloses a degradable material granulator operation state monitoring method, system and equipment. The method comprises the following steps: acquiring a plurality of monitoring images and a plurality of CT scanning images of a target material strip in a unit monitoring period; respectively acquiring a surface defect trend value and a porosity trend value of the target material strip; obtaining an abnormal operation trend value of the granulator; inputting the surface defect trend value, the porosity trend value and the operation abnormity trend value into a preset risk assessment model to obtain a risk assessment value; judging whether the risk assessment value is greater than a preset risk threshold value or not, if so, sending first alarm information, and if not, obtaining the current weight of a particle material discharged from a pelletizing mechanism of the pelletizer; and judging whether the current weight is within a preset weight threshold interval, and if not, sending second alarm information, and the method and the device have the advantage of improving the accuracy of monitoring the abnormity in the granulation process.

The invention relates to the technical field of extrusion pelletizer state monitoring, in particular to an extrusion pelletizer state monitoring and fault diagnosis method and system.The extrusion pelletizer state monitoring and fault diagnosis method comprises the following steps that S1, the extrusion pelletizer state monitoring and fault diagnosis system is initialized; an extrusion granulator is connected for comprehensive monitoring; s2, carrying out multi-parameter monitoring on a plurality of preset monitoring point positions in the extrusion granulator; and S3, acquiring multi-parameter monitoring data of each monitoring point position, and performing intelligent diagnosis by comparing fault characteristic frequencies recorded in a preset fault library. According to the invention, comprehensive monitoring of the extrusion pelletizer can be realized through multi-parameter monitoring of a plurality of monitoring points in the extrusion pelletizer, intelligent fault diagnosis is carried out according to multi-parameter monitoring data of the plurality of monitoring points, whether the monitoring points have faults can be accurately judged, the monitoring efficiency of potential faults is improved, and the working efficiency of the extrusion pelletizer is improved. And the fault phenomenon is timely reported.

The invention discloses a constant-temperature and constant-humidity spherical catalyst carrier preparation device and a preparation method thereof, and relates to the technical field of spherical catalyst carrier preparation.The constant-temperature and constant-humidity spherical catalyst carrier preparation device comprises a material mixing mechanism, a knife valve is installed at the lower end of the material mixing mechanism, and a single-head spiral blanking machine is installed below the knife valve; an internal mixer is installed below the single-head spiral blanking machine, a spiral extruder is installed at the lower end of the internal mixer, a blanking head is arranged below the end of the internal mixer and connected with a feeding port of the spiral extruder, and a grain cutting head is installed on the outer side of the end of the spiral extruder. According to the scheme, the problems that an existing spherical catalyst preparation device is dispersed in structure, a powder mixer, an internal mixer, an extruder and a rolling drum are independently arranged, the occupied area is large, time and labor are wasted in material transfer in the middle process, the production efficiency is affected, and loss in the material transfer process can be caused are solved.

The invention belongs to the technical field of granulation devices, and particularly relates to a self-drying biomass particle granulation device which comprises a bottom plate, a shell fixed to the top of the bottom plate, a transmission box fixed in the shell, a barrel fixed to the top of the shell, a discharging plate installed on the outer wall of the barrel, a motor fixed to the side of the transmission box, and a granulation disc connected to an output shaft of the transmission box. A center shaft is further arranged in the barrel, a pair of pressing rollers is rotationally connected to the center shaft, and the temperature collecting module is used for generating a temperature fluctuation coefficient through the control module; and the current acquisition module generates a current fluctuation coefficient through the control module. The extrusion temperature of the material and the working current of the motor are monitored in real time through the temperature acquisition module and the current acquisition module, the generated temperature fluctuation coefficient and the current fluctuation coefficient are comprehensively analyzed, the evaluation coefficient is generated, the evaluation coefficient is compared with a preset reference threshold value, the heating temperature and the rotating speed of the granulation disc are flexibly adjusted, and the granulation efficiency is improved. And the stability of granulation quality is ensured.

The utility model discloses a fly ash and multi-source solid waste plasma melting collaborative resource treatment system which comprises a fly ash stock bin, a fly ash stock bin, a binder storage tank, a material intermediate bin, a glass stock bin, a stirrer, an extrusion forming granulator, a plasma furnace and a control center. Normal operation of the whole system is completed through accurate matching, quantitative matching of the binder and coordination and matching of valves of all devices. Resourceful treatment of various solid wastes such as fly ash, fly ash and waste glass bottles is realized, the fly ash and fly ash are mixed to form a low-melting-point mixture, low-temperature generation of a liquid phase is promoted, the melting temperature is reduced, the energy efficiency is improved, the treatment cost is saved, and meanwhile, a stable glass phase is formed; according to the plasma furnace, the raw materials are granulated after being mixed, and the process that powdery materials directly enter the furnace is replaced, so that the problem that slag is difficult to discharge in the plasma furnace is solved, and secondary dust raising is prevented.

The utility model relates to the technical field of organic fertilizer processing, and discloses a convenient-to-clean pelletizer for organic fertilizer processing, which comprises a mixing drum, a base is arranged below the mixing drum, a pelletizing drum is arranged above the base, a cleaning mechanism is arranged in the mixing drum, and the cleaning mechanism is arranged above the pelletizing drum. An auxiliary mechanism is arranged between the stirring barrel and the granulation barrel, and a power mechanism is arranged above the granulation barrel. According to the convenient-to-clean pelletizer for organic fertilizer processing, through the arrangement of the cleaning mechanism, when the pelletizer carries out pelletizing operation of organic fertilizer processing, the design of a driving motor can drive a rotating shaft to rotate, stirring of organic fertilizer raw materials is achieved, the organic fertilizer raw materials are mixed more uniformly, meanwhile, a cleaning plate is driven by the rotating shaft, and the cleaning effect is better. According to the device, raw materials attached to the inner wall of the stirring barrel can be scraped, the situation that bacteria breed in the stirring barrel due to accumulation of the raw materials is avoided, meanwhile, waste of the raw materials in the granulation operation is reduced, and the automation and protection performance of the device are improved.

The invention relates to bio-organic fertilizer granulation equipment and a granulation method thereof.The bio-organic fertilizer granulation equipment comprises a fixed machine shell, an extrusion screw is rotatably installed at a guide hole of the fixed machine shell, and an end cover plate with a discharge guide hole formed in the periphery is fixedly installed at the end of the fixed machine shell; the forming assembly comprises a forming cover plate which is installed on the outer side of the end cover plate in a swinging mode, a first forming groove is formed in the outer end face of the end cover plate, and a second forming groove is formed in the inner end face of the forming cover plate; the multifunctional cutting assembly comprises a spring piece which is movably inserted into the end cover plate on the upper side of the first forming groove, and the outer end of the spring piece is fixedly connected with a magnetic metal plate; and the material cutting driving mechanism comprises a plurality of magnet pieces which are fixedly embedded in the forming cover plate, and the magnet pieces directly face the magnetic attraction metal plates respectively. According to the invention, on the premise of not influencing the granulation efficiency of the material, the granulation uniformity of the material can be effectively ensured, and the breakage rate of the granulated material can be effectively and greatly reduced.

The present application belongs to the technical field of granulating device, and particularly relates to a carbon nanotube dry granulating device, which comprises a machine body, a feeding mechanism arranged at the upper port of the machine body, a cutting and guiding mechanism arranged between a rolling mechanism and a whole-grain mechanism, a guiding square cylinder fixedly connected below two supporting guide plates, a guiding cavity formed in the guiding square cylinder, wherein the upper port of the guiding cavity is located below the symmetrical rollers, a triangular distributing block is fixedly arranged in the lower port of the guiding square cylinder, a discharging cavity is formed between the two side slopes of the triangular distributing block and the side wall of the guiding cavity, at least two sliding grooves are formed in the left side wall of the guiding square cylinder and communicate with the guiding cavity, a sliding plate is slidingly arranged in each sliding groove, and a cutting knife is arranged on the right end surface of each sliding plate. The present application can improve the effect of the whole-grain mechanism on rolling and pressing the small pieces after cutting into granules, thereby improving the efficiency of processing and forming of the carbon nanotube in the dry granulating device.

The invention discloses a granulating, conveying and air-drying integrated device which is integrated with air pressure and wind power equipment and can be used for timely and quickly air-drying and cooling formed granules extruded from a die hole, granules can be remotely conveyed through air flow energy while air-drying and cooling are performed, the breakage rate can be effectively reduced through flexible conveying of the air flow, and the production efficiency is improved. Meanwhile, fresh low-temperature airflow can cool the discharging bin, so that the discharging bin is in a low-temperature state, material forming is more facilitated, cooling and conveying are synchronously completed through the airflow, and energy consumption is effectively reduced; the equipment integrates the functions of granulation, air drying and conveying, can be adapted to feed and biomass particle production by adjusting the aperture of the flat die and the air pressure parameter, can be used for production, air drying and conveying of pellet feed and biomass particle fuel, and is extremely simple in structure, free of a complex conveying mechanism, low in failure rate, convenient and fast to maintain, easy to produce, manufacture, install and maintain and high in production efficiency. The method is suitable for large-scale popularization and has high commercial value.

The invention relates to the field of biomass fuel, in particular to a biomass fuel particle processing system and method.The biomass fuel particle processing system comprises a forming base with the upper end provided with a plurality of extrusion cavity holes, the lower end of each extrusion cavity hole extends to form a discharging hole penetrating through the forming base, the outer side of the forming base extends upwards to form a surrounding plate, and a door-shaped frame is fixed to the upper end of the surrounding plate; a lifting plate is arranged in the door-shaped frame in a lifting limiting sliding mode, a mounting plate is fixed to the lower end of the lifting plate, limiting rings are rotationally arranged at the positions, corresponding to the multiple extrusion cavity holes, of the mounting plate, extrusion shafts are fixed to the centers of the limiting rings, rhombic cone blocks are fixed to the lower ends of the extrusion shafts, and two stirring rods are arranged on each rhombic cone block in a penetrating sliding mode; and the two stirring rods are parallel to the corresponding extrusion shafts. Raw materials can be uniformly distributed in the extrusion cavity.

The invention belongs to the technical field of pelletizers, and discloses a fertilizer forming pelletizer which comprises a rack, a power unit and a pelletizing unit are arranged on the rack, a shell is fixed to the tail end of the pelletizing unit, a pelletizing cavity and a powder cavity are formed in the shell through a fixedly-arranged partition plate, a powder supplementing pipe is fixed to the powder cavity, and the power supplementing pipe is fixed to the power supplementing pipe. An air suction port and an air outlet are formed in the partition plate, one-way valves are fixed in the air suction port and the air outlet, the top of the granulation cavity is communicated with the top of the powder cavity through the air suction port, the bottom of the granulation cavity is communicated with the bottom of the powder cavity through the air outlet, a center hole is formed in the middle of the partition plate, and a diaphragm vibration unit is arranged in the center hole; the diaphragm vibration unit comprises an elastic membrane, a center plate and a vibration piece, the center plate is fixed to the center hole through the elastic membrane, and the fixedly-arranged vibration piece is used for driving the center plate to vibrate back and forth in the axis direction of the center plate; according to the invention, the possibility of adhesion between particles can be reduced.

The utility model discloses a biomass particle granulator with a cleaning mechanism, and relates to the technical field of granulators. The utility model provides a biomass particle granulator with a cleaning mechanism. The biomass particle granulator comprises a bottom frame, the top end of the bottom frame is fixedly connected with a containing disc, the containing disc is fixedly connected with a material extruding machine, and the material extruding machine is fixedly connected with a forming die. The scrap raw materials are guided into the extruding machine, the extruding machine extrudes the raw materials through the forming die for granulation, produced biomass particles fall on the containing disc, in the initial state, the scraping plate does not make direct contact with the surface of the forming die, and the biomass particles extruded and formed by the forming die can be cut off when the scraping plate rotates; and when the surface of the forming die needs to be cleaned, the extrusion cylinder and the sliding plate are matched to control the rolling brush and the scraping plate to move inwards to make contact with the surface of the forming die, and the scraping plate and the rolling brush rotate front and back to clean the surface of the forming die.

The invention belongs to the technical field of biomass granulators, particularly relates to a granulation device for biomass particle production, and aims to solve the problems that iron slag is not easy to remove, the granulation efficiency is low and heat supply is not uniform in the prior art. A slag removal mechanism for removing iron slag and a granulation mechanism for completing biomass material granulation are respectively arranged on the outer walls of the crusher and the granulator. After biomass materials are put into the pulverizer to be pulverized, iron slag can be removed as much as possible under the action of the slag removal mechanism, the slag removal difficulty is reduced, the quality of biomass particles is prevented from being affected, and the granulation equipment is well protected; the purified biomass material can be subjected to double-sided granulation under the action of the granulation mechanism, the granulation range is expanded, the granulation efficiency is improved, heat supply is uniform, and the quality of biomass particles is improved.

The present invention provides a mixing device and a method for mixing high-specific surface area materials. The mixing device comprises a mixing unit and a grinding unit, wherein the material outlet of the mixing unit is connected to the material inlet of the grinding unit. The mixing unit comprises a mixing barrel, a scraper, a reamer, a spray device, and a shielding plate for barrel wall holes. The grinding unit comprises a grinding barrel, a grinding disc, a grinding disc fixing device, and a material receiving bin. The mixing device provided by the present invention significantly improves the mixing efficiency of high-specific surface area materials with other substances, while substantially maintaining the specific surface area of ​​the high-specific surface area material before and after mixing, thereby ensuring its performance.

The present invention relates to the field of catalyst technology, and specifically discloses a catalyst preparation device, wherein a plurality of upper pressing members are arranged at intervals along the circumference of a turntable, the upper pressing members are slidably connected to the turntable, a push rod corresponding to the upper pressing members is slidably provided on the turntable, an upper guide member and a lower guide member are provided on the base frame, and the turntable has an extrusion cavity that cooperates with the upper pressing member and the push rod; a rod one is slidably provided in the upper pressing member, a limit rod that cooperates with the upper pressing member is slidably provided on the rod one, an unlocking rod that cooperates with the limit rod is slidably provided on the upper pressing member, a rod two is slidably provided in the push rod, an upper top ring and a lower top ring are slidably provided on the base frame, and a driving member for driving the upper top ring to move is provided on the base frame, when the upper top ring moves downward, the upper top ring can stop the unlocking rod to disengage the lock between the rod one and the upper pressing member, and the lower top ring can move upward and stop the rod two, so that the rod two extends upward from the push rod; the present invention is conducive to efficient and multi-form pressing of catalyst particles.

The utility model relates to the technical field of organic fertilizer granulators, and discloses a screw extrusion type organic fertilizer granulator. Comprising a machine body and a base, the base is fixedly connected to the bottom of the machine body, a transmission box is fixedly connected to the side wall of the machine body, a motor is fixedly connected to the side wall of the transmission box, an output shaft of the motor extends into the transmission box and is fixedly connected with a first gear, and spiral conveying blades are rotationally connected to the inner wall of the machine body; a shaft body of the spiral conveying blade extends into the transmission box and is fixedly connected with a second gear, and the first gear and the second gear are meshed with each other. The spring can push the inserting block to extend into the inserting groove, the stability of installation of the particle extrusion plate can be improved, after the scraping frame is detached from the rod wall of the threaded rod subsequently, the inserting block can be driven to retract into the cavity by pulling the pull rod, the particle extrusion plate can be detached from the interior of the machine body, and replacement is facilitated.

The utility model discloses a self-cleaning structure of a biomass particle granulator, which comprises a lower pressing block, the interior of the lower pressing block is hollow, an inserting needle for dredging a hole of a granulation plate is arranged in the lower pressing block, and the lower pressing block can descend to extrude slurry between the lower pressing block and the granulation plate, so that the slurry can be cleaned, and the self-cleaning structure of the biomass particle granulator can be used for cleaning the granulation plate. By means of the arranged inserting needles and the pushing assembly of the inserting needles, when the granulation plate needs to be cleaned, the inserting needles can be inserted into the holes of the granulation plate to dredge the holes, the situation that the holes are blocked due to the fact that slurry remains is avoided, and later use is facilitated; and the other reason is that the connecting plate and the contact pin are arranged to be hollow-out, so that after the water bag is injected with water and expands, the electronic valve is opened, water in the water bag can enter the connecting plate and the contact pin, the water is discharged through the drainage hole, and the hole and the granulation plate are washed and further cleaned.

The material pot structure comprises a material pot, a pelletizing assembly, a discharging assembly, an air inlet pipe and a stirring paddle, a base is detachably arranged at the bottom of the material pot, a circle of positioning ring extending downwards in an inclined mode is arranged on the lower portion of the material pot, a lifting disc is arranged in the position, between the positioning ring and the base, of the material pot, and the lifting disc can move up and down in the material pot. The air inlet pipe is arranged on one side of the material pot between the positioning ring and the base in a communicating mode, and the pelletizing assembly is arranged on the material pot above the positioning ring in a penetrating mode. According to the material pot structure of the granulator, the air inlet channel is formed between the lifting disc and the positioning ring, so that air flow from the air inlet pipe is uniformly diffused upwards along the gap between the lifting disc and the positioning ring, particle splashing caused by too strong local air flow is avoided, the sectional area of the air inlet channel is dynamically adjusted by utilizing the vertical displacement of the lifting disc, and accurate air volume control is realized; the positioning ring obliquely extends downwards to guide the materials to gather towards the center, so that stirring of the stirring paddle is facilitated, and edge residues can be reduced.

The utility model discloses a pelletizing cutterhead provided with multiple combination pelletizing cutters, which comprises a cutterhead with a circular section, a plurality of first mounting holes and second mounting holes which are arranged in a staggered manner are arranged on the cutterhead close to the outer edge, the first mounting holes are circumferentially and uniformly distributed on the cutterhead at equal intervals, and the second mounting holes are arranged on the cutterhead close to the outer edge of the cutterhead at equal intervals. The plurality of second mounting holes are circumferentially and uniformly distributed on the cutter head at equal intervals, and the number of the first mounting holes is not equal to that of the second mounting holes. According to the utility model, the first mounting hole and the second mounting hole are used for mounting two different quantities of pelletizing cutter combinations, so that the pelletizing cutter can meet the production requirements under two capacities at the same time, and the quantity of cutter heads required by different capacities is reduced, so that the production cost is reduced.

The utility model belongs to the technical field of granulators. The compression roller assembly comprises a compression roller shaft; the compression roller shell is arranged on the compression roller shaft through a bearing assembly; the end cover assembly is arranged at the end part of the compression roller shell, and the end cover assembly comprises a first end cover and a second end cover; a first sealing structure is arranged between the first end cover and the compression roller shell; a second sealing structure is arranged between the first end cover and the second end cover; and a third sealing structure is arranged in a space defined by the first end cover, the second end cover and the compression roller shaft. The compression roller assembly is used for solving the technical problems that a common compression roller assembly is of a single-sealing structure, the sealing performance of internal grease is poor, external feed and dust easily enter the compression roller assembly, parts in a compression roller are seriously abraded, and the service life is shortened. The granulator comprises the compression roller assembly.

The present invention relates to the field of pellet manufacturing equipment, and in particular to a biomass pellet machine. The shell of its pellet manufacturing part is provided with a feed port, a discharge port 1 and a discharge port 2 from top to bottom, a double-layer flat die assembly is provided in the shell, and is divided into an upper cavity and a lower cavity by the double-layer flat die assembly; a double-layer ring die assembly is provided in the upper cavity and forms a pellet manufacturing chamber connected to the feed port by covering the double-layer flat die assembly, and the outer periphery of the double-layer ring die assembly is provided as a discharge chamber 1; the discharge chamber 1 is connected to the discharge port 1, and a dredging scraper assembly 1 is provided in the discharge chamber 1; a guide platform for the drive shaft to rotate through is provided in the lower cavity, and the outer periphery of the guide platform is provided as a discharge chamber 2 connected to the discharge port 2, and a dredging scraper assembly 2 is provided on the top of the guide platform; a bidirectional rolling assembly is rotatably provided in the pellet manufacturing chamber. The present invention is provided with separate granulation on the side, separate granulation on the bottom, and synchronous granulation on the side and bottom, with various granulation methods, flexible adjustment of the granulation size, and efficient and smooth granulation.

The utility model discloses an extrusion forming device for activated carbon processing, which comprises a bottom plate, a base arranged at the top end of the bottom plate, a transmission case arranged on one side of the top end of the base, a support frame arranged at the top end of the base on one side of the transmission case, a conveyor body arranged at the top end of the support frame, and a feed hopper arranged on one side of the top end of the conveyor body. A gear motor is mounted at the top end of the base on the side, away from the supporting frame, of the transmission box, one end of the gear motor extends into the transmission box and is provided with a first gear, a second gear is rotatably mounted in the transmission box on one side of the first gear, and a third gear is rotatably mounted in the transmission box above the second gear; and a fourth gear is rotationally mounted in the transmission box on one side of the third gear. According to the extrusion forming device, the phenomenon that activated carbon raw materials are coagulated into blocks can be effectively reduced, so that the activated carbon can be easily extruded and formed, the purpose of automatically extruding and forming the activated carbon raw materials is achieved, and the use convenience of the extrusion forming device is improved.

This utility model relates to the technical field of feed processing equipment, and discloses a feed production pelleting device, including a base; a hopper fixedly connected to the top of the base; a conical guide cover and a protrusion, the conical guide cover being disposed on the top of the hopper, and the protrusion being fixedly connected to the bottom of the conical guide cover; two mounting rods and a guide plate, the two mounting rods being fixedly connected to the outer right side of the hopper, and the guide plate being rotatably connected to the middle of the two mounting rods; a mounting block fixedly connected to the outer right side of the base; a fixing column rotatably connected to the inside of the mounting block; and a lead screw and a handwheel, the lead screw being threadedly connected to the inside of the fixing column. This utility model allows for easy adjustment of the angle of the guide plate to accommodate storage bins of different heights, thereby improving the flexibility of the device.

This invention relates to a rotary wet granulation machine for veterinary drug processing, belonging to the technical field of veterinary drug processing equipment. It solves the technical problem of inconvenient replacement of granulation screens. The machine includes a frame and a hopper, with granulation screens installed and removed from the frame and hopper via a lower clamp assembly and an upper clamp assembly, respectively. The lower clamp assembly includes a left arc-shaped plate, rotatably connected to a right arc-shaped plate, and a fixedly connected arc-shaped toothed plate. A groove is formed in the right arc-shaped plate, and a locking tooth is slidably connected within the groove. The locking tooth engages with the arc-shaped toothed plate. A handle is fixedly connected to one side of the locking tooth via a sliding rod. The same internal spring is fixedly connected to the opposite side of the locking tooth and the groove. This invention replaces traditional bolt fixing with the lower and upper clamp assemblies. The left and right arc-shaped plates are rotatably connected, and quick clamping is achieved through the engagement of the arc-shaped toothed plate and the locking tooth, as well as the action of the internal spring. Pulling the handle releases the engagement, eliminating the need for external tools and allowing for rapid replacement of screens with different particle size requirements.

Provided is a method for producing hydroxypropyl methyl cellulose acetate succinate, which can be industrially produced efficiently and in which the pore volume in the obtained particles is controlled. A method for producing hydroxypropyl methyl cellulose acetate succinate, the method including at least an esterification step, a precipitation step, a liquid removal step, a pulverization step, and a drying step, in which a screw press is used in the liquid removal step.