4317 results about "Agricultural Product Processing" patented technology

The invention relates to the technical field of drying equipment, in particular to clothing cloth drying equipment. The clothing cloth drying equipment comprises a box body, a discharging shaft for discharging cloths, a drying module, an ironing module, an air-drying module, a rolling shaft for rolling the cloths and a controller. The top of the left side of the box body is provided with a storinghole for storing the cloths, a damping piece mounted at the bottom of the box body is arranged under the storing hole, and the discharging shaft is vertically mounted on the damping piece. The dryingmodule is used for drying the cloths, the ironing module is used for ironing the cloths, and the air-drying module is used for air-drying the ironed cloths. The rolling shaft is located on the rightside of the air-drying module, a material taking hole for taking out the cloths is formed in the top of the box body over the rolling shaft, the rolling shaft is driven through a rolling motor, and the rolling motor is electrically connected with the controller. The clothing cloth drying equipment is mainly suitable for being used in a clothing manufacturing shop and has the characteristics that the size is small, the weight is small, the price is low, and energy consumption is little.

A surround hot air slow drying device and a three-stage baking method for pet food processing are provided. The surround hot air slow drying device for pet food processing includes a drying box. A hot air drying unit is provided at an inner bottom of the drying box, a circulating conveying unit is provided inside the drying box, a plurality of drying frames are evenly distributed on the circulating conveying unit, a material turning mechanism is provided inside the drying frames, and a positioning component is provided inside the drying box. The material turning mechanism cooperates with the positioning component to turn the raw materials in the drying frames.

The invention discloses a silicon nitride ceramic based on a Yb2O3-MgSiN2 composite sintering aid and a preparation method of the silicon nitride ceramic, the silicon nitride ceramic comprises 93wt% of a Si3N4 matrix, 1-7wt% of Yb2O3 and the balance of MgSiN2, and the total mass of the Yb2O3 and the MgSiN2 as the composite sintering aid is 7wt%. The preparation method comprises the following steps: mixing the raw materials with absolute ethyl alcohol, then adding grinding balls, pouring the mixture into a polyethylene ball milling tank for ball milling, carrying out forced air drying treatment and grinding and sieving treatment on obtained slurry, and then putting sieved powder into a mold for SPS sintering. The problems that traditional silicon nitride ceramic is too high in sintering temperature, insufficient in grain boundary stability and the like are solved, and performance balance of low-temperature sintering, low oxygen content and high grain boundary stability of the silicon nitride ceramic is achieved under the industrial-grade production condition through the synergistic effect of material component innovation and process optimization; and a key material solution is provided for preparing the silicon nitride ceramic with good performance.

The invention discloses a process for improving anodic oxidation consistency of an anode foil for an aluminum electrolytic capacitor, and relates to the technical field of capacitor manufacturing, and the process comprises the steps of multi-stage washing, etching, feeding, multi-stage formation, intermediate treatment, first post-treatment, roasting, second post-treatment, stability treatment, drying, rolling, inspection and packaging. Wherein the multi-stage formation adopts three-stage oxidation of low-temperature and low-current, medium-temperature and medium-current and low-temperature and high-current, so that an oxidation film forms a base layer, a growth layer and a high-density protection layer which are uniformly overlapped layer by layer, and the consistency and compactness of the oxidation film are synergistically improved through dynamic water washing, air drying and temperature field and fluid field regulation and control technologies; the oxide film is repaired through first post-treatment, the pore size of the oxide film is reduced, and the compactness of the oxide film is improved; and high-temperature roasting is combined, and a second post-treatment step is carried out, so that the oxidation film forms an aluminum oxide crystal structure which is stable, high in hardness and compact in structure, and the water resistance and reliability of the finished anode foil are enhanced.

The invention discloses a roll-to-roll cleaning control method and system for a flexible circuit board electronic structural member, and relates to the technical field of electronic manufacturing, and the method comprises the steps: carrying out the partitioning processing of a to-be-cleaned member, and obtaining a thin region and a thick region; the drying cavity is partitioned on the basis of the thin area and the thick area, and a partitioned temperature control method is constructed; a dehumidification drying module is placed, and a hot air drying method is obtained based on a chilled mirror dew-point instrument; the roll-to-roll cleaning control method is used for solving the problems that in an existing roll-to-roll cleaning control method for the flexible circuit board electronic structural part, differential temperature control is not carried out on a thick area and a thin area, and the influence of environment humidity in a drying cavity on the drying effect is not considered; the problems that a thin plate is overheated after being dried, water in a thick plate is not completely evaporated, watermarks which cannot be wiped appear on the surface of the electronic structural part, and then the practicability of the cleaned electronic structural part is affected are solved.

The invention relates to the technical field of cleaning equipment, and particularly discloses a steam cleaning machine. The cleaning machine comprises a cleaning machine body, a steam generation system, a cleaning agent conveying device, a waste water suction device, a hot air device and a control device are arranged in the cleaning machine body, the cleaning machine body is connected with a multifunctional integrated spray head through a multi-channel connector and a multi-channel connecting pipe, and the multifunctional integrated spray head is of a multi-layer hierarchical structure. The steam nozzle, the cleaning agent nozzle and the spherical suction head are sequentially arranged from inside to outside; during use, steam and a cleaning agent cooperatively soften and decompose dirt, the wastewater suction device sucks sewage through a spherical suction head of the spray head, the hot air device blows out hot air for drying, and all the systems are controlled by the control device. The cleaning device integrates the functions of steam cleaning, cleaning agent assisting, waste water sucking and hot air drying, achieves closed-loop cleaning, is convenient to operate and high in efficiency, and meets the cleaning requirements of floors, furniture, tabletops, household appliance gaps and the like in families, hotels and other scenes.

The utility model discloses an acid-proof ceramic tile intelligent continuous drying device which comprises a drying bin and a discharging conveyor, and a first conveyor, a second conveyor and a third conveyor are installed in the drying bin. The acid-resistant tile blank drying device has the beneficial effects that the lifting table and the weighing sensor are arranged, in the hot air drying process, the weight of the acid-resistant tile blank is continuously reduced, when the acid-resistant tile blank moves to the position above the lifting table, the electric push rod extends and pushes the acid-resistant tile blank to move upwards, and then the first electric cylinder, the second electric cylinder, the third electric cylinder and the fourth electric cylinder are shortened; and when the weight reaches a set value, the first electric cylinder and the second electric cylinder extend, so that the acid-resistant ceramic tile blanks incline towards the discharging conveyor, the acid-resistant ceramic tile blanks slide along the balls to penetrate through the cloth curtain to reach the top face of the discharging conveyor and move out of the drying bin, and automatic drying detection and discharging of the acid-resistant ceramic tile blanks are completed. The trouble of manual detection is saved, and the use convenience is improved.

The invention discloses a wafer self-air-drying clamping jaw and a clamping mechanism, and relates to the technical field of semiconductor manufacturing equipment, the clamping jaw comprises a clamping structure, the clamping structure is provided with a clamping groove, and the clamping groove comprises a first side wall and a second side wall which are oppositely arranged; the clamping groove only abuts against the edge of the wafer to complete clamping of the wafer, and in the clamping state, a first gap is formed between the first side wall and the surface, close to the first side wall, of the wafer; and / or a second gap is formed between the second side wall and the surface, close to the second side wall, of the wafer. According to the invention, the clamping groove is only abutted against the edge of the wafer, and the clamping position does not relate to the wafer process surface, so that the retention of medicament liquid drops in the clamping area during spin-drying is avoided. Meanwhile, in the high-speed rotating and spin-drying process of the wafer, when air flow enters the first gap and / or the second gap, accelerated air flow can be formed, chemicals on the wafer and the clamping groove can be rapidly taken away, residual accumulated liquid is eliminated, and the morphology quality of a film layer on the periphery of a wafer spin-drying clamping area is improved.

The invention discloses a high-valued graded utilization method of marine shells, and belongs to the technical field of comprehensive utilization of biological resources and preparation of functional materials. The method comprises the following steps: cleaning, air-drying and superfine grinding marine shell wastes such as abalone shells, and extracting water-soluble organic components in the marine shell wastes by adopting mild water extraction, so that the obtained extract is rich in protein, polysaccharide or small molecule peptide, has good biological activity, and can be used for preparing functional materials such as biomimetic mineralization, tissue repair and the like; extracted shell powder residues are subjected to heat treatment or chemical activation treatment and then compounded with natural polymer materials such as chitosan and sodium alginate, and the composite adsorbent which is loose in structure and large in specific surface area is prepared and can be used for removing dye, heavy metal, antibiotics and other water pollutants. According to the invention, separate utilization of organic components and inorganic framework materials in the marine shells is realized, and the method has the characteristics of environmental protection, efficient resource conversion and multifunctional application, and has a good industrial popularization prospect.

The invention discloses an intelligent soil classification automation system and method. Comprising a soil sample pretreatment module used for air drying, stirring and weighing treatment; the soil sample particle size grading screening module is used for carrying out step-by-step screening treatment to obtain a first-stage particle distribution result; the liquid-plastic limit automatic measurement module is used for performing measurement by using a conometer method to obtain a measurement result of the conometer method; the burning measurement module is used for carrying out burning treatment to obtain a corresponding burning measurement result; the densimeter measurement module is used for carrying out particle analysis through a densimeter method to obtain a second-stage particle distribution result; and the control analysis module is used for realizing automatic control of the intelligent soil classification automation system and performing data analysis to obtain the soil sample type and the corresponding optimal solidification method. According to the system disclosed by the invention, the whole-process automation and data processing of soil classification testing are realized, and the soil sample type and the corresponding optimal solidification method can be automatically obtained.

The invention discloses an efficient glass fiber plate cleaning and drying process which comprises the following steps: S1, pretreatment: performing appearance inspection on a to-be-cleaned glass fiber plate, and removing unqualified plates of which the surfaces are obviously damaged and cracked; s2, pre-cleaning: putting the glass fiber plate subjected to primary treatment into an ultrasonic cleaning tank, injecting clear water into the cleaning tank, enabling the liquid level of the clear water to completely submerge the glass fiber plate, starting an ultrasonic generator at the same time, and separating dust, loose chippings and other impurities on the surface of the glass fiber plate through the cavitation effect of ultrasonic waves to complete pre-cleaning; and S3, chemical cleaning, wherein after pre-cleaning is completed, the glass fiber plate is fed into a chemical cleaning tank containing alkaline pre-cleaning liquid. According to the technology, multiple cleaning procedures are combined with ultrasonic waves, chemical reagents and nano-particles, vacuum and hot air drying are matched, efficient cleaning and rapid drying of the glass fiber plate are achieved, few impurity residues exist, the water content is low, the surface flatness is good, parameter adaptability is high, energy is saved, environment friendliness is achieved, and the automation degree is high.

The invention relates to the field of waste plastic recycling, and discloses plastic film recycling equipment which is used for cleaning and recycling broken plastic films. Comprising a cleaning pool, an inclined conveying belt is arranged at the tail end of the cleaning pool, water filtering holes are formed in the conveying belt, and an extrusion component is arranged on the conveying belt; and the fished-out fragments are extruded by the extrusion part, so that the drainage speed of the fragments is accelerated, and the subsequent recovery processing step is ensured to be smoothly carried out. A traditional conveying belt drains water only by means of gravity, and water in wet plastic fragments and between layers is difficult to effectively discharge, so that the water yield is large. The intermittent extrusion action is introduced in the operation cycle of the conveying belt, and the'wet cake 'structure formed by the surface tension of a water film of the wet material is destroyed in the squeezing process, so that the moisture is easier to release, the initial moisture content of the material is greatly reduced, the load of subsequent centrifugal dewatering or hot air drying equipment is effectively reduced, and the energy consumption and the operation cost are remarkably reduced.

The dyeing workbench with the auxiliary waste liquid removal mechanism comprises a dyeing placement table, a dyeing feeding and discharging mechanism and the waste liquid removal mechanism, the waste liquid removal mechanism comprises an air drying installation frame, a heating assembly and an air drying fan, an air drying channel is formed in the air drying installation frame, and an air inlet and an air outlet are formed in the air drying installation frame. The air inlet and the air outlet communicate with the two ends of the air drying channel correspondingly, the air drying fan is arranged at the air inlet, a heating placement position is arranged at the front end of the air outlet, and the heating assembly is fixedly arranged in the heating placement position. The dyeing machine waste liquid recovery device can solve the problem that waste liquid residues exist in waste liquid recovery of a dyeing machine in the prior art, by means of the product structure, airflow of the air drying fan forms heat flow through the heating assembly, the residual waste liquid can be effectively air-dried, and by arranging the waste liquid removal mechanism, the waste liquid recovery efficiency is improved. The constant dyeing environment temperature can be effectively guaranteed, the dyeing efficiency is improved, the use experience of personnel is improved, and the competitiveness of products is improved.

The utility model discloses an aluminum ingot production and processing casting machine conveying device which comprises a supporting column, a transmission roller is arranged on the supporting column, a metal net belt is arranged on the transmission roller in a transmission mode, a beam is arranged on the supporting column, a recycling box is arranged on one side of the metal net belt, an aluminum ingot limiting device is arranged on the metal net belt, and a conveying belt is arranged on the aluminum ingot limiting device. A spray cooling device is arranged on the cross beam, a water receiving device is arranged on the cross beam and located between the metal net belts, and an air drying device is arranged on the cross beam. The utility model belongs to the technical field of aluminum ingot conveying and processing, and particularly relates to a conveying device of an aluminum ingot production and processing casting machine, which solves the problems that in the prior art, aluminum ingots are easy to slide in the conveying process due to lack of limiting measures for the aluminum ingots when the aluminum ingots are conveyed, and meanwhile, the aluminum ingots are lack of a rapid cooling and heat dissipation function.

The invention provides an intelligent traction type overhead conductor insulation coating device and method, and belongs to the technical field of bare conductor insulation layer construction. The device comprises a protective shell, a material supply system is arranged in the protective shell, and the material supply system communicates with a coating system and is used for coating the surface of a bare conductor with an insulating material; the traction system drives the protective shell to advance along the bare conductor; the integrated cleaning and drying system comprises a suction nozzle used for adsorbing and cleaning sundries on a bare conductor, and further comprises a negative pressure fan mechanism, the suction end of the negative pressure fan mechanism is communicated with a garbage can, and the garbage can is communicated with the suction nozzle; and the air exhaust end of the negative pressure fan mechanism is communicated with an air drying blowing nozzle which is used for drying the insulating material coated on the surface of the bare conductor. According to the design, airflow circulation of the negative pressure fan is fully utilized, cleaning-coating-drying type assembly line work is achieved, and therefore the problems that in a traditional technology, the adhesive force of the insulating material is reduced due to dust, and time is wasted when the insulating material waits for natural air drying are solved.

The invention belongs to the technical field of sandy soil reinforcement, and relates to a sandy soil reinforcement method combining modified chitosan film coating and cementation with biomimetic mineralization and application, the sandy soil reinforcement method comprises the following steps: S1, chitosan is subjected to swelling, alkalization, carboxymethylation and refining treatment to obtain modified chitosan; s2, respectively preparing a calcium chloride solution and a sodium carbonate solution with the same concentration; a calcium chloride solution is a cementing solution A; adding modified chitosan into a sodium carbonate solution, and uniformly stirring to form a cementing solution B; s3, the cementing liquid A is sprayed to the sandy soil, then the cementing liquid B is sprayed, and primary cementing is completed; carrying out circulating cementing for 5-20 times according to the spraying mode; and then air drying is conducted to complete sandy soil reinforcement. According to the invention, the agglomeration among calcium carbonate particles is enhanced by utilizing the cementing, film covering, mineralized crystal form adjusting and filling coupling effects of the modified chitosan, so that the calcium carbonate particles form effective cementing connection among sand particles, thereby improving the mechanical properties of the sand.

The utility model discloses a refrigeration type air dryer, which belongs to the technical field of air drying devices and comprises a cooling cylinder, an air inlet is arranged on the right lower side of the outer end of the cooling cylinder, and an air outlet pipe is fixedly mounted at the upper end of the cooling cylinder. A temperature returning system is mounted in the cooling cylinder; the temperature returning system comprises a baffle ring and a temperature returning heating pipe; an evaporation system is further installed in the cooling barrel and arranged in the temperature returning system. By means of the mode, gas communication of the gas flowing area and the pretreatment heating area is effectively isolated; and an inlet of the evaporation system is formed in a gas flowing area, so that the evaporated and cooled gas is heated, and the air drying effect of the device is further enhanced.

The utility model belongs to the field of cloth drying equipment, and particularly relates to an environment-friendly chemical fiber cloth printing, dyeing and drying device which comprises a drying box. The side face of the drying box is fixedly connected with an air heater. A hot air drying assembly for guiding hot air to dry the cloth is arranged in the drying box; a plurality of racks are fixedly connected to the inner wall of the drying box; the rack is rotationally connected with a lower roller; fixing seats are arranged on the two sides of the top of the machine frame, the upper rollers, the lower rollers, the machine frame and the fixing seats are arranged, in the using process, cloth penetrates through the space between the upper rollers and the lower rollers, the cloth can be extruded by means of the multiple pairs of upper rollers and lower rollers, dye in the cloth can be removed through extrusion, then water in the cloth can be reduced, and the use effect of the cloth is improved. The two ends of the lower roller are arranged in a conical shape, so that the dye extruded out of the cloth can be conveniently guided, and the dye in the cloth can be conveniently extruded out.

The invention relates to the technical field of food processing, in particular to a drying device for marinated egg packaging treatment and a using method thereof.The drying device comprises a conveying mechanism, and a drying mechanism is arranged on the front side of the conveying mechanism. Reciprocating linear motion of the storage frame is matched with the synthetic fiber cloth belt, intermittent discharging and stable conveying of marinated eggs are achieved, direct collision and damage during drying are avoided, the synthetic fiber cloth belt is porous, large in specific surface area and capable of adsorbing moisture on the surfaces of the marinated eggs and reducing humidity, the drying air outlet plate reciprocates, hot air evenly covers the marinated eggs, and drying efficiency is improved. A traditional device is low in drying efficiency and long in drying time due to design limitation of discharging and a conveying belt, the device shortens the drying period and improves the production efficiency through continuous movement of a cloth belt and reciprocating hot air drying of an air outlet plate, and the risk of cross contamination is reduced through the design that the cloth belt adsorbs moisture and is easy to clean.

According to the drying module, the drying water tank and the integrated cabinet, hot air generated when a draught fan and a heating piece in an air inlet channel work enters an out-tank drying air channel so as to heat and dry the water tank from the outside, and meanwhile, an in-tank drying inlet of an in-tank drying air channel communicates with an air inlet outlet of the air inlet channel through an out-tank air drying channel; therefore, hot air can enter the in-tank drying air channel to be blown into the water tank, multiple functions of drying the interior of the water tank, drying tableware or unfreezing the tableware and the like can be achieved, and user experience is improved.

The invention discloses a flexible self-adaptive saline goose production method which comprises the following steps: firstly, obtaining a goose blank; obtaining weight and variety information of the goose blank through an information acquisition unit I; calling standard process parameters corresponding to varieties and weights in a database through a control unit, firstly putting the goose blank into pickling equipment for pickling, after pickling is completed, putting the goose blank into marinating equipment for marinating, obtaining the salted goose after marinating is completed, and entering a step of obtaining and detecting quality information of the salted goose; the quality information of the salted geese is obtained and detected through an information acquisition unit II, the quality information is compared with a database standard value to judge the product qualification, and the quality information comprises color and flavor information of the salted geese; and carrying out air drying treatment, vacuum sealing and sterilization treatment on the treated qualified salted goose finished product. The intelligent salted goose production purposes of high efficiency, energy conservation, stable quality control and nutrition enhancement can be achieved.

The invention relates to the technical field of food kelp processing, and provides efficient air-drying equipment and method for kelp production, the efficient air-drying equipment comprises a hot air circulation bin, a circulation moving mechanism, a hanging module, an unhooking module and an air-drying frame, the circulation moving mechanism comprises a driving part, a transmission shaft, a gear and a transmission belt, and the gear is fixedly arranged on the surface of the transmission shaft; the driving part is used for controlling the transmission shaft to rotate, the inner side of the transmission belt is in transmission connection with the gear, the hanging module comprises a hook, inclined faces and a movable pin, the movable pin is fixedly connected to a hook body of the hook, the inclined faces inclining towards the component are arranged on the two sides of a hook groove of the hook, and the hook is used for hanging rope rings for binding kelp. The unhooking module comprises a limiting frame and a telescopic air cylinder, the telescopic air cylinder is arranged between the air drying frame and the limiting frame, and a hook body of the hook can make contact with the limiting frame, so that smooth unhooking is guaranteed, and the function of automatically collecting the dried kelp is achieved.

The invention discloses a shear strength parameter determination method considering earthquake action, which comprises the following steps: collecting a soil sample of a research area, air-drying, dispersing the soil sample into single particles, and sieving to obtain the stone content of the soil sample; the method comprises the following steps: preparing a compacted cylindrical sample from a soil sample, and placing the compacted cylindrical sample in a triaxial testing machine for a triaxial test to obtain static strength parameters of the soil sample; collecting seismic magnitude data of the research area, and determining the seismic magnitude of the research area; and according to the stone content, the static strength parameter and the earthquake magnitude, calculating the shear strength parameter of the research area under the earthquake action by adopting a shear strength damage cracking model. Based on PFC numerical simulation software, dynamic triaxial numerical simulation of the accumulation body is carried out and compared with an indoor test result, the change rule and numerical value of the numerical simulation result are close to those of the indoor test result, the parameter error is smaller than 50%, and the reasonability of the established accumulation body sample model and the calculated dynamic strength parameters is verified.

The invention discloses a metal wire conveying device for a wire coil, and relates to the technical field of conveying devices. Comprising a fixing seat, a cleaning mechanism is arranged on the fixing seat, a first supporting wheel and a second supporting wheel are rotationally connected to the front side wall of the fixing seat, a tensioning mechanism is arranged on the fixing seat and located between the first supporting wheel and the second supporting wheel, and an oil attaching mechanism is further arranged on the fixing seat and located between the first supporting wheel and the second supporting wheel. A metal wire is arranged between the cleaning mechanism and the oil attaching mechanism in a penetrating mode. In the conveying process of the metal wire, a first motor is started, a cleaning brush is used for cleaning the surface of the metal wire, a water pump is synchronously started in the cleaning process, water in a water storage tank is pumped into a water spraying frame, high-pressure washing is conducted on the surface of the metal wire, and the cleanliness of the surface of the metal wire is improved; water stains on the surface of the metal wire are air-dried through the first air guide ring, and the situation that the mechanical strength and corrosion resistance of the metal wire are affected by the water stains attached to the surface of the metal wire is prevented.

The present invention relates to a novel drying rack device. The device is designed to save time and effort when cleaning and sterilizing instruments, cassettes, tools, and / or accessories. The device comprises a countertop drying rack that sits on a tray. The countertop drying rack comprises a plurality of compartments that can be round and / or flat, with a plurality of drain holes for air drying wet instruments. Further, the tray below the rack collects water runoff for safe disposal and to allow the instruments to air dry. The device keeps instruments and tools organized, different kits separated, allows instruments to dry, and decreases risk of injury and exposure to bloodborne pathogens.

The utility model discloses a polypropylene multi-unit collaborative devolatilization system, which belongs to the technical field of devolatilization in polypropylene production process, and comprises a polypropylene powder solid-phase devolatilization unit, a polypropylene powder solid-phase devolatilization unit, a polypropylene powder solid-phase devolatilization unit, a polypropylene powder solid-phase devolatilization unit and a polypropylene powder solid-phase devolatilization unit, the extrusion granulation devolatilization unit comprises an extruder and a granulator, an outlet of the powder collecting tank is connected with a feed port of the extruder, and an outlet of the extruder is connected with the granulator; the granule devolatilization unit comprises a hot air drying stock bin, and an outlet of the granulator is connected with an inlet of the hot air drying stock bin; an outlet of the hot air drying bin is used for being connected with a packaging production line. According to the melt devolatilization system disclosed by the utility model, the batch-type vacuum dryer is additionally arranged, so that the modification of a core equipment double-screw extruder is reduced, the process complexity of the melt devolatilization system is obviously reduced, the devolatilization efficiency is improved, and volatile components can be completely removed.

The invention discloses a slow-release alkaline composite material as well as a preparation method and application thereof, and relates to the technical field of water treatment. The preparation method comprises the following steps: mixing the paper mill white mud, the cement, the fly ash and the exciting agent, adding the water glass, uniformly mixing, granulating, placing at room temperature, carrying out water bath steam curing, and carrying out air drying and aging to obtain the slow-release alkaline composite material. The method has the advantages of simple process, cheap and easily available raw materials and low equipment investment and operation cost, and the prepared slow-release alkaline composite material has the advantages of good formability, good settleability, controllable alkali slow-release property and excellent pH slow-release regulation effect on acidic wastewater, has strong adsorption capacity on heavy metals such as iron and manganese without activation, and is suitable for industrial production. The method can solve the problem of neutralization precipitation method treatment of acidic mine gushing water, also synchronously widens the way of resource utilization of the white mud of a paper mill, and is beneficial for realizing the win-win goal of treating waste with waste.

The invention relates to the technical field of nanocellulose, in particular to a preparation method of a lignin-containing nanocellulose / polyvinyl alcohol composite film. The preparation method comprises the following steps: (1) mixing corn straw particles with a maleic acid aqueous solution, heating, stirring, pretreating, then adding deionized water for quenching reaction, filtering, and washing a filter cake with water until filtrate is neutral; (2) dispersing the filter cake into deionized water, and performing ultrasonic treatment to obtain an LCNFS suspension; and (3) uniformly mixing a polyvinyl alcohol aqueous solution with the LCNFS suspension, then adding glycerol, stirring, pouring the mixture into a polytetrafluoroethylene mold, and air-drying at room temperature to obtain the lignin-containing nanocellulose / polyvinyl alcohol composite film. By adding the LCNFS, the mechanical property of the PVA composite material film is remarkably improved, so that the PVA composite material film has higher tensile strength and elongation at break, can meet application scenes with higher performance requirements, and has the advantages of degradability and cyclic utilization.

The invention discloses a preparation method and application of a curable bacterial carrier bed, and relates to the technical field of sewage treatment. Comprising the following steps: mixing shell powder, kaolin and a pore-forming agent, adding water, granulating, rolling into spheres, air-drying, and performing primary sintering to obtain a porous light inner core; uniformly mixing nano calcium carbonate, silicon oxide sol, a binder and water to prepare slurry, spraying the slurry to the surface of the porous light core, imprinting a surface micro-well array through a mold, and then carrying out secondary sintering to obtain a ceramic-coated core; uniformly mixing titanium oxide sol and sodium alginate to obtain a bacteria-philic solution, dip-coating the bacteria-philic solution on the surface of the inner core coated with the ceramic, and forming a gel layer through ultraviolet curing; femtosecond laser etching capillary air channels penetrate to the core layer, the depth of each capillary air channel is 950-1050 microns, and the diameter of each capillary air channel is 180-220 microns; through the innovative combination of a ceramic multi-stage structure and an air touch regeneration mechanism, the problem of flora activity maintenance in fish tank sewage treatment is solved.

The utility model discloses an automatic fish salting machine for air-dried fish processing, and relates to the technical field of automatic fish salting machines. The automatic fish salting machine for air-dried fish processing comprises a base, a supporting frame is fixed to the upper portion of the base, a salting barrel is slidably connected to the upper portion of the supporting frame, the discharging end of the salting barrel is open, and a cover body is movably installed at the discharging end of the salting barrel; the side plate is fixed above the base and located on one side of the supporting frame, and a driving assembly for driving the pickling cylinder to rotate is installed on the side plate; the inner cylinder is fixed on the inner wall of the pickling cylinder, and four net plates are symmetrically fixed on the outer wall of the inner cylinder; according to the fish slice pickling device, the detachable fish clamping assemblies are arranged, so that in the pickling process of the previous batch of fish slices, the other four groups of fish clamping assemblies can be used for clamping and preparing the fish slices, and when the previous batch of fish clamping assemblies are dismounted for discharging work, the fish clamping assemblies in the pickling barrel can be immediately replaced for quickly pickling the fish slices.