900results about How to "Quick removal" patented technology

The invention discloses a CoFeCuMn LDH nanosheet, a confinement catalytic membrane and a preparation method of the CoFeCuMn LDH nanosheet. The preparation method of the CoFeCuMn LDH nanosheet comprises the steps that A1, cobalt salt, ferric salt, copper salt and manganese salt are dissolved in pure water according to a preset proportion to prepare a first solution, sodium hydroxide is dissolved in pure water to prepare a second solution, and sodium carbonate is dissolved in pure water to prepare a third solution; a2, adding the first solution and the second solution into the third solution, and stirring to obtain a mixed solution; a3, carrying out hydrothermal reaction on the mixed solution; a4, centrifugally washing the product obtained in the step A3 to obtain a precipitate; and A5, the sediment is dried, and the CoFeCuMn LDH nanosheet is obtained. According to the CoFeCuMn LDH nanosheet, the confinement catalytic membrane and the preparation methods of the CoFeCuMn LDH nanosheet and the confinement catalytic membrane, the degradation efficiency and the degradation rate of new pollutants are remarkably improved.

The invention provides a water electrolysis hydrogen production system and a control method thereof.The water electrolysis hydrogen production system comprises a water tank, a heat exchanger, an electrolytic bath and a hydrogen-water separator which are sequentially connected through a pipeline, and further comprises a water quality optimization branch, a water inlet end and a water outlet end of the water quality optimization branch communicate with the water tank; the system further comprises a branch variable frequency pump and a resin tank; the first drainage valve is arranged on a drainage pipeline communicated with the drainage port of the water tank; an inlet conductometer and an anode thermometer to detect a first real-time conductivity and real-time temperature of liquid entering the anode input end of the electrolytic cell; the outlet conductivity meter is used for detecting the second real-time conductivity of fluid flowing out of the oxygen output end of the electrolytic bath, and controlling the operation of the branch variable frequency pump and the opening and closing of the drain valve according to the first real-time conductivity, the real-time temperature and the second real-time conductivity; the problem that the service life of an electrolytic cell is short due to the water quality problem of a water electrolysis hydrogen production system in the prior art is solved.

The invention belongs to the technical field of gel materials, and particularly relates to a high-performance water-swelling acrylic acid-based material and a preparation method thereof. Comprising the following steps: (1) modifying graphene by adopting a silane coupling agent containing unsaturated double bonds to prepare a modified graphene dispersion liquid; (2) sequentially adding acrylic acid, an acrylamide monomer and a cross-linking agent into the modified graphene dispersion liquid, then adding an initiator, and reacting to obtain a gel mixed solution; and (3) freeze-drying the gel mixed solution to obtain the high-performance water-swelling acrylic acid-based material. The gel material is uniform in pore structure and high in mechanical strength. Physical adsorption can be carried out by taking Van der Waals force or electrostatic attraction force as adsorption driving force through a pore structure, and chemical adsorption can also be carried out by taking chemical bond force or hydrogen bond interaction as adsorption driving force through functional groups on the graphene and the acrylic polymer, so that organic pollutants such as cationic dyes and the like can be effectively and quickly removed.

The invention discloses a method for deeply removing readily oxidizable substances in high-purity electronic-grade phosphoric acid, which deeply removes the readily oxidizable substances in the high-purity electronic-grade phosphoric acid in a mode of combining ozone oxidation and resin adsorption to obtain a high-purity electronic-grade phosphoric acid finished product with extremely low readily oxidizable substance concentration. The specific process mainly comprises the following three steps: S1, introducing ozone gas at a certain temperature to oxidize readily oxidizable substances such as phosphorous acid and hypophosphorous acid in phosphoric acid into phosphoric acid so as to reduce the concentration of the readily oxidizable substances; s2, feeding the phosphoric acid subjected to ozone oxidation into an adsorption reactor to be in contact with an adsorbent, and further removing residual readily oxidizable substances in the phosphoric acid; and S3, filtering the phosphoric acid subjected to adsorption treatment through a filter element for separation, and removing residual small particles and impurities to obtain the electronic-grade phosphoric acid with readily oxidizable substances removed. The method is simple in process, controllable in condition, convenient to operate, safe and environment-friendly, does not need to add an additional solvent, avoids introduction of new impurities, reduces secondary pollution, and is suitable for preparing high-purity electronic-grade phosphoric acid.

The invention discloses a preparation method of an amphiphilic carbon dot, the amphiphilic carbon dot and application of the amphiphilic carbon dot. According to the amphiphilic carbon dots, at least one of phenol, catechol, resorcinol or hydroquinone is used as a first precursor, and at least one of urea, aniline, o-phenylenediamine or 1, 2, 4-triaminobenzene is selected as a second precursor; after mixing and dissolving, reacting for 4-8 hours under the condition of 180-220 DEG C to prepare initial carbon dots; separating and purifying the initial carbon dots in a chromatographic column, collecting a second component, removing the solvent through rotary evaporation, and drying to obtain the amphiphilic carbon dots. The degreasing agent prepared from the obtained amphiphilic carbon dots has strong adsorption capacity, low toxicity and good stability, can effectively remove oil stains, has the characteristic of low foam in the use process, simplifies the cleaning process and improves the efficiency.

The invention discloses a full-automatic ultrahigh-pressure sludge treatment filter press which comprises a main beam, a plurality of groups of filter plates are slidably mounted in the main beam, a thrust plate and a mounting plate are fixedly mounted at two ends of the main beam respectively, a hydraulic rod is fixedly mounted at one end of the mounting plate, a piston rod of the hydraulic rod penetrates through the mounting plate, and a pressing plate is fixedly mounted at the end of the piston rod. Guide grooves are formed in the upper surfaces of the filter plates, the mounting plates and the thrust plates, synchronizing mechanisms are slidably mounted in the guide grooves, purging mechanisms are slidably mounted in the synchronizing mechanisms, V-shaped cylinders are fixedly mounted on the lower surface of the main beam, and sludge shaping mechanisms are rotatably mounted in the V-shaped cylinders. Through the design of the synchronizing mechanism, the sludge shaping mechanism and the purging mechanism, the function of automatically cleaning the filter plate is achieved through purging of high-pressure gas, and then the continuous operation capacity and the cleaning efficiency of the equipment are improved.

The utility model discloses an efficient metal surface pickling device, which relates to the technical field of metal pickling and comprises a box body, a sealing cover and a driving component, the sealing cover is arranged at the top end of the box body, the driving component extending into the box body is arranged at the top end of the sealing cover, and a filtering and cleaning mechanism is arranged in the box body. A rotating wheel is rotated to drive a displacement block and a locking rod to move, so that the locking rod can be locked with a connecting block, on the contrary, impurities filtered on the surface can be quickly removed after a filter screen is taken out, and meanwhile, a pickling solution is discharged through a water outlet formed in one side; according to the efficient pickling device for the metal surface, waste of pickling liquid can be avoided when the efficient pickling device for the metal surface is used for pickling metal, the pull rod can be pulled to be separated from the stirring blades, so that the stirring blades are detached, the situation that the stirring blades are bent easily in the process of stirring the metal for pickling for a long time is avoided, and therefore the replaced stirring blades can stir the metal more conveniently and rapidly.

The invention discloses a super-smooth polishing processing method for a NiP modified reflector, which comprises the following steps: preparing a NiP modified layer, and carrying out ultra-precision turning processing and super-smooth polishing processing on the NiP modified layer until the NiP modified layer meets the index requirements. According to the machining method, the NiP modified reflector blank workpiece is machined through ultra-precision turning and ultra-smooth polishing, surface defects generated in the machining process of the NiP modified reflector blank workpiece can be effectively eliminated, the machining efficiency can be improved, meanwhile, medium-high frequency errors on the surface of the reflector can be effectively restrained, and the machining precision of the NiP modified reflector blank workpiece is improved. According to the NiP modified reflector processing method, the surface shape precision and the surface quality of processing can be remarkably improved, the NiP modified reflector blank workpiece can be processed into the NiP modified reflector with higher quality, and the NiP modified reflector processing method has the advantages of few processing defects, high processing quality, high processing efficiency, good repeatability and the like, and has important significance in promoting wide application of the NiP modified reflector in the short-wavelength optical field.

The invention relates to a cleaning method for removing pollutants deposited on the surface of a fluoride coating heater. The cleaning method comprises the specific steps that appearance inspection is conducted on a part, and a universal meter is used for detecting a resistor; the binding post part is protected; a white corundum sand material is used for sand blasting and film removal; blowing through an air gun; carrying out deprotection and washing; the heater is right placed in an ultrasonic cleaning tank, deionized water is used for ultrasonic cleaning, and the part is rotated by 90 degrees once every 3 min; wiping with isopropyl alcohol; the part is put into an ultrasonic cleaning tank to be cleaned, the part is rotated by 90 degrees once every 3 min, and whether marks are generated or not is observed; purging with nitrogen; performing drying; performing inspection; and vacuum packaging. The white corundum sand material is used for conducting sand blasting and film removing treatment on the surface of the component, a small amount of residual pollutants on the surface of the component can be rapidly removed, and it is guaranteed that the surface of the component keeps uniform; and the part is rotated once every 3 minutes during ultrasonic cleaning, so that the surface can be controlled not to generate marks due to ultrasonic oscillation.

The invention discloses a method for selectively removing a transparent coating on the surface of a workpiece through laser scanning, which comprises the following steps of: firstly, covering the transparent coating on the surface of the workpiece with a transparent flexible film, filling photosensitive glue between the transparent flexible film and the workpiece, and then curing the photosensitive glue on a custom pattern part by using ultraviolet laser to penetrate through the transparent flexible film to obtain the transparent coating on the surface of the workpiece. Then infrared laser is used for heating the cured photosensitive adhesive layer, so that heat is conducted to the transparent coating, the transparent coating is softened, the photosensitive adhesive layer and the transparent coating are further glued, finally, the transparent flexible film is stripped, and the transparent coating of the user-defined pattern part is removed. According to the method, the transparent coating on the surface of the workpiece is rapidly, accurately and selectively removed, the surface of the workpiece is not damaged, and the method is convenient, rapid, high in safety, environmentally friendly and free of pollution.

The invention relates to the technical field of laser welding, and discloses a laser welding machine for gas barbecue oven machining, which comprises a welding box, a first box door is hinged to the front surface of the welding box, a second box door is hinged to the back of the welding box, a welding platform is fixedly connected to the interior of the welding box, and a collecting groove is formed in the welding platform. A collecting box is slidably connected into the collecting groove, the front face of the welding platform is obliquely arranged in a slope mode, sweeps on the top of the barbecue oven can be blown away through an air blowing pipe so that the sweeps can slide to the slope of the welding platform, a brush can blow away the sweeps on the slope, and therefore cleaning of the welding sweeps is achieved. And the interior of the transverse groove is knocked through the knocking ball, so that falling of scraps on the inclined face of the welding platform can be accelerated, scrap cleaning is achieved, the probability of generation of welding defects such as air holes and slag inclusion can be reduced through scrap cleaning, welding seams are more uniform and compact, and the welding quality is guaranteed.

The invention belongs to the technical field of synthetic purifying agents, and discloses a multipurpose synthetic purifying agent and a use method thereof, and the purifying agent comprises the following components in percentage by weight: 18-50% of ferric trichloride; 2-37% of polyaluminum ferric chloride; 10 to 60 percent of calcium chloride dihydrate; 22 to 52 percent of ferrous sulfate; 5-45% of polyaluminum chloride; 10-30% of basic aluminum chloride; according to the invention, COD in wastewater can be rapidly removed, the pH value is neutralized, the hydrophilicity is changed, a diffusion layer is compressed, the counter-ion effect is increased, and the purpose of oxidation reduction is finally achieved; in the hydrolysis process, a surfactant and various pollution factors in wastewater can be effectively adsorbed and polymerized into jelly, and the jelly is rapidly precipitated and separated in a short time, so that the wastewater is purified.

The invention discloses a preparation method and application of biomass-based photo-thermal super-hydrophobic composite aerogel, and belongs to the technical field of oil spill adsorption materials. The method comprises the following steps: (1) mixing sodium alginate, kapok fibers and water to obtain a dispersion; freeze-drying is carried out, such that kapok / sodium alginate composite aerogel is obtained; (2) soaking the kapok / sodium alginate composite aerogel in a CaCl2 aqueous solution for cross-linking, so as to obtain cross-linked composite aerogel; (3) soaking the cross-linked composite aerogel in an aqueous solution containing Tris-HCl and dopamine hydrochloride, so as to obtain a polydopamine composite aerogel; (4) soaking in a pyrrole aqueous solution, and adding anhydrous FeCl3 to obtain photo-thermal composite aerogel; and (5) carrying out hydrophobic modification on the photo-thermal composite aerogel through organosilane vapor deposition to obtain the biomass-based photo-thermal super-hydrophobic composite aerogel. The super-hydrophobic composite aerogel prepared by the method has excellent adsorption performance and photo-thermal performance, and can quickly remove oil stains in water.

The invention discloses a monatomic catalyst for activating peroxymonosulfate as well as a preparation method and application of the monatomic catalyst. The catalyst comprises a nitrogen and sulfur co-doped Ti3C2Tx nanosheet and an iron monatomic or cobalt monatomic targeted on the nanosheet in an asymmetric coordination structure. The preparation method comprises the following steps: mixing the Ti3C2Tx nanosheet, a precursor containing a nitrogen source and a sulfur source, and soluble metal salt, self-assembling, freeze-drying and pyrolyzing. The monatomic catalyst provided by the invention has excellent conductivity and electronic structure, can form a large amount of reactive oxygen species in a catalytic degradation system on the premise of low addition amount of peroxymonosulfate, and has the advantages of high activation efficiency on peroxymonosulfate, capability of effectively reducing the usage amount of peroxymonosulfate and the like; the peroxymonosulfate can be activated to achieve efficient purification of organic wastewater, the operation cost of the peroxymonosulfate activation technology can be effectively reduced, and meanwhile, the new environmental pollution risk caused by the fact that a large amount of peroxymonosulfate is used can be remarkably reduced.

The invention belongs to the technical field of environmental pollutant analysis and detection. The invention discloses a Fenton reaction-based efficient separation and extraction method for soil micro-plastics. The method comprises the following steps: preparing a micro-plastic soil sample; carrying out digestion and purification treatment on the micro-plastic; then separating the micro-plastics through a density flotation method; and finally, carrying out microscopic observation on the dried filter membrane by using a stereoscope so as to calculate the abundance of the micro-plastic and analyze the morphological characteristics of the micro-plastic. According to the method, the salt solution with lower cost and the organic matter digestion method with small influence on the micro-plastic particles are used, efficient removal of organic matter in the complex soil matrix and efficient extraction of the micro-plastic are achieved, the micro-plastic separation and extraction time is shortened, the micro-plastic recovery rate is increased, and the method is easy and convenient to operate, economical and practical.

The invention discloses a Cu2WS4-CuBi2O4 composite material with a photothermal effect and a preparation method and application thereof.The Cu2WS4-CuBi2O4 composite material is supported by CuBi2O4 of a rod-shaped structure, flaky Cu2WS4 is loaded on the surface of the rod-shaped CuBi2O4 through the interface regulation and control effect of a surfactant by adopting a hydrothermal method, and a Z-type heterojunction with the photothermal effect is formed; in an antibiotic degradation system, the Cu2WS4-CuBi2O4 composite material shows good photocatalytic performance and degradation effect under the synergistic effect of a photothermal effect and a PDS advanced oxidation process. The device is simple to prepare, stable in structure, high in repeatability and free of secondary pollution, and can meet laboratory and industrial requirements.

The present invention discloses a filter for dusty oil and gas, comprising a cylinder, the top of which is connected to a top cover, the bottom of which is connected to a cone, a first bypass port and a second bypass port are provided on the top cover and the cylinder, the two are connected through a pipeline to form an external passage, and a bypass valve is provided on the pipeline; a plurality of filter elements are provided in the cylinder; a first heating component and a second heating component are provided on the outer wall of the cylinder and the cone. The filter of the present invention, under the joint action of the heating component and the external passage, can not only ensure that the interior of the cylinder and the cone always maintains a relatively high temperature, but also can timely dredge the filter element during operation, thereby achieving effective separation of dust and oil and gas, and effectively avoiding abnormal phenomena such as negative pressure inside the filter, having the advantages of high processing efficiency, good filtering effect, low maintenance cost, high safety, long service life, etc., can effectively remove dust in the oil and gas when used for filtering dusty oil and gas, has high use value, and good application prospects.

The invention relates to the technical field of cleaning devices, and discloses a hydrogen conductivity meter resin automatic cleaning device which comprises a base, a protective cover is fixedly installed on the upper surface of the base, and two limiting sliding grooves are symmetrically formed in the outer surfaces of the two opposite sides of the protective cover in a penetrating mode. The driving motor drives the crankshaft to rotate, so that the crankshaft drives the bent neck to eccentrically rotate, the bent neck drives the U-shaped sliding plate to reciprocate through the connecting rod, and the U-shaped sliding plate and the rubbing plate move mutually through the reciprocating motion of the U-shaped sliding plate. Dirt on the surface of hydrogen conductivity surface resin can be rapidly removed, and it is ensured that the subsequent hydrogen conductivity detection value is stable.

The invention relates to the technical field of self-cleaning coatings, in particular to a two-component inorganic super-hydrophilic self-cleaning coating and a preparation method and application thereof.The preparation method comprises the following steps that 1, gamma-aminopropyltriethoxysilane is dissolved in an ethanol water solution, then titanium dioxide sol is added, stirring reaction is conducted for 2-4 h at the temperature of 40-50 DEG C, and modified titanium dioxide sol is obtained; (2) dispersing nano-montmorillonite in ethanol, then adding tea polyphenol, and performing ultrasonic dispersion for 0.5-1 hour to obtain a modified nano-montmorillonite suspension; (3) mixing a cerium nitrate solution with the alumina sol, then adding the modified montmorillonite suspension, and uniformly mixing to obtain composite alumina sol; and (4) mixing and cross-linking the prepared modified titanium dioxide sol and composite aluminum oxide sol to obtain the self-cleaning coating. The long-acting super-hydrophilic self-cleaning coating provided by the invention has the advantages of excellent self-cleaning capability, stable and long-acting super-hydrophilicity, wear resistance and antistatic effect.

The utility model relates to the technical field of metering tanks, in particular to a stirring type metering tank which comprises a stabilizing seat and a supporting rod which are fixedly connected, and the end, away from the stabilizing seat, of the supporting rod is fixedly connected with a tank body. The feeding hopper is fixedly arranged on the upper side of the tank body; the stirring mechanism is mounted on the upper side of the tank body, and the power output end of the stirring mechanism is arranged in the tank body; the cleaning mechanism is mounted on the tank body, and the power output end is in sliding contact with the inner wall of the tank body; the metering mechanism is mounted on one side of the tank body; the discharging pipe is fixedly arranged on the lower side of the tank body and used for guiding out materials in the tank body, the discharging pipe is made of a transparent material, and scales are arranged on the discharging pipe; and the control panel is mounted on one side of the tank body. The stirring type metering tank provided by the utility model not only can be used for storing and metering materials, but also can be used for fully stirring the materials, meanwhile, the inner wall of the stirring type metering tank can be conveniently cleaned, and the stirring type metering tank is simple to operate and high in practicability.

The invention belongs to the technical field of health care products, and particularly relates to a production process of black ginseng peptide powder, and the technical scheme is that the production process of the black ginseng peptide powder comprises the following steps: pre-treating raw materials, cleaning black ginseng, removing impurities, ensuring the purity of the raw materials, cooking the cleaned black ginseng, and drying to obtain the black ginseng peptide powder. The method comprises the following steps: extracting active ingredients in black ginseng, adding a mixed enzyme for enzymolysis, decomposing proteins in the black ginseng into small-molecular peptides under the action of the mixed enzyme to obtain a liquid after enzymolysis, carrying out precise filtration, carrying out precise filtration on the liquid after enzymolysis, removing impurities to obtain a pure peptide liquid, and concentrating the pure peptide liquid by using concentration equipment to obtain the black ginseng peptide. The size is reduced; in the enzymolysis step of the production process of the black ginseng peptide powder, protein in black ginseng can be decomposed more comprehensively by using mixed enzyme and is converted into small molecule peptide, and the small molecule peptide is more easily absorbed and utilized by a human body.

The invention provides a wind turbine generator tower drum rust removal robot and an operation control method thereof. The wind turbine generator tower drum rust removal robot comprises a robot box used for carrying the whole robot, and a moving module for driving the whole robot to move is arranged on the robot box; a cleaning module used for polishing rust is arranged on the bottom end face of the robot box. A sensor module for detecting the environment is arranged on the robot box body; a spraying module for spraying is mounted on the robot box body; the power supply is used for supplying power to the moving module, the cleaning module and the sensor module. A whole set of rust removal process is completed through mutual cooperation of various machines, the working efficiency is greatly improved through an automatic rust removal mode, manual operation in a high-altitude, dangerous or toxic environment can be replaced, and the safety is improved.

The utility model discloses surface drying equipment for silk fabric processing. The surface drying equipment comprises a conveying mechanism and a rack, a conveying mechanism is fixed to the top of the rack, an extrusion structure is arranged at the top of the conveying mechanism, a drying furnace is fixed to the top of the rack, and a control module is installed at the top of the drying furnace; and the extrusion structure comprises a first gear, a pressing shaft, a second gear and a water collecting tank. According to the silk fabric drying device, the extrusion structure is arranged, the servo motor drives the net belt to rotate, in the process that silk fabric is conveyed into the drying furnace, through cooperation between gears, the pressing shafts move reversely, the pressing shafts are close to the driven shaft at the bottom, the silk fabric passing through is extruded between the two shaft bodies, and the silk fabric is dried. According to the surface drying equipment for silk fabric processing, the water in the surface drying equipment is compressed and dripped into the water collecting tank at the bottom, so that the effect that the surface drying equipment for silk fabric processing facilitates fabric dehydration is achieved, the amount of water needing to be treated by the drying equipment is reduced, and energy is saved.

The invention provides a crayfish egg in-vitro hatching device and hatching method, and relates to the technical field of in-vitro hatching. The in-vitro hatching device for the crawfish eggs comprises a hatching barrel, wherein a plurality of overflow ports are formed in the side wall of the hatching barrel; an egg containing barrel is embedded in the hatching barrel, the top end of the egg containing barrel is rotationally connected with an upper cover plate, and an aeration pipe is connected to the upper cover plate in an inserted mode and extends to the inner bottom of the egg containing barrel; the outer wall of the hatching barrel is sleeved with an overflow barrel, the aeration pipe is rotationally communicated with a first power mechanism, the first power mechanism is coaxially and rotationally embedded in the egg containing barrel, air is continuously injected to drive water to roll on the inner side and the outer side of the egg containing barrel, and active eggs and inactive eggs are gradually separated; the screening holes are utilized to gradually separate inactive eggs from active eggs, and the eggs overflow into the overflow cylinder from the overflow port under the rolling action of the water body, so that good eggs and bad eggs are separated, and bacteria on the bad eggs are prevented from quickly infecting the good eggs.

The utility model discloses a chemical sewage catalytic treatment anti-electrode plate passivation device which comprises a movable frame, an electric telescopic rod is installed on the movable frame, an electrode plate is installed on the electric telescopic rod, and a polishing structure is installed on the electric telescopic rod. Through the arrangement of a polishing assembly, a dust hood, a first motor, an adapter plate and other structures, when the decomposition speed of sewage becomes slow after the electrode plate is used for a period of time, the electrode plate only needs to be lifted up from a sewage pool, then the adapter plate is driven by the first motor to rotate, and the adapter plate drives the polishing assembly to approach the electrode plate; according to the electrode plate polishing device, the surface of an electrode plate is polished, so that impurities attached to the surface of the electrode plate can be rapidly removed, meanwhile, by means of the arrangement of a dust suction cover, the impurities and smoke dust polished by the polishing assembly can be effectively and rapidly sucked into a dust suction box, and pollution to the environment and damage to the body health of workers are avoided.

The invention belongs to the technical field of ceramic materials, and particularly discloses whisker toughened zirconium oxide-aluminum oxide composite ceramic and an additive manufacturing method thereof, the composite ceramic comprises the following components by mass: 94 parts of zirconium oxide toughened aluminum oxide ceramic and 5 parts of silicon carbide whisker; the zirconium oxide toughened aluminum oxide ceramic is prepared from the following components in parts by mass: 76 parts of aluminum oxide and 24 parts of zirconium oxide, and 3mol% of yttrium oxide is added into the zirconium oxide. According to the whisker toughened zirconium oxide-aluminum oxide composite ceramic and the additive manufacturing method thereof, the preparation method has unique design of components and process, and the preparation of a high-density and high-performance ceramic-based composite material part based on a fused deposition modeling technology is successfully realized. Further, the prepared silicon carbide whisker toughened zirconium oxide-aluminum oxide-based composite ceramic has relatively high density and excellent obdurability.

The present invention discloses a preparation method of a magnetic metal organic framework material and its application in removing microplastics in food, belonging to the field of food safety. The present invention uses drinking water, tea and wine as examples for explanation, and adsorbs and removes microplastics therein, so as to achieve a better effect of separating microplastics from food; the method based on the magnetic metal organic framework material can improve the efficiency and speed of removal, and reduce cumbersome operation steps such as centrifugation; and the method has a good removal effect. The method of the present invention can achieve the purpose of adsorbing and removing microplastics in food, and provides a theoretical and technical basis for the future control of microplastics in food.

The invention discloses an ultra-pure microcrystalline graphite purification system and a production process thereof, and relates to the technical field of microcrystalline graphite purification processes, the ultra-pure microcrystalline graphite purification system comprises a crusher, a grinder, a flotation machine, an acid tank, a reaction kettle, a centrifuge, a dryer and a sewage treatment box; the crusher is connected with the grinding machine through a conveying belt, the grinding machine is connected with the flotation machine through a conveying pipe, the flotation machine is connected with the reaction kettle through a pipeline with a valve, and the acid tank is connected with the reaction kettle through a pump body to inject acid into an inner cavity of the reaction kettle for purification. According to the invention, the centrifugal machine blow-off pipeline and the drying machine blow-off pipeline are mutually matched with the sewage treatment tank, so that acid water generated after dehydration of the centrifugal machine and excessive acid water generated during drying of the drying machine can enter the sewage treatment tank to be subjected to neutralization reaction with the lime rod, and meanwhile, the acid water is immersed in the water storage tank; and finally, the discharged acid water is purified and can be recycled, so that environmental pollution is avoided.

The invention discloses a konjak raw material continuous cleaning system, belongs to the technical field of konjak cleaning, and provides the following scheme that the konjak raw material continuous cleaning system comprises a cleaning mechanism, and a feeding mechanism is assembled on the cleaning mechanism; a motor drives a first bevel gear to be in transmission with a second transmission assembly, the second transmission assembly can be in transmission with an extrusion assembly, the extrusion assembly can be matched with a storage assembly to achieve reciprocating shaking of the net cage, and therefore konjak raw materials in the net cage are shaken, cleaning operation of the konjak raw materials is facilitated, and in the reset process of the storage assembly, the konjak raw materials can be cleaned conveniently. A first ratchet wheel is matched with a clamping assembly to achieve rotating operation of the net cage, an extrusion assembly is matched with a storage assembly and the clamping assembly to achieve reciprocating shaking and rotating operation of the net cage, konjak is in a shaking and rotating state, cleaning of konjak raw materials and four-corner washing are reduced, and the konjak raw material cleaning uniformity is improved; and the cleaning quality can be further greatly improved.

The utility model discloses an easy-to-clean outdoor chair which comprises two chair frames which are arranged in a bilateral symmetry mode, supporting legs are arranged at the bottoms of the chair frames, a plurality of spokes which extend leftwards and rightwards and form a seat plate and a backrest are connected between the chair frames, a cleaning plate is arranged between the chair frames, and the cleaning plate is connected with the chair frames. Cleaning holes allowing all the spokes to penetrate in one by one are formed in the cleaning plate, bristles tightly attached to the spokes are distributed on the hole walls of the cleaning holes, and the cleaning plate is connected to the spokes in a sliding mode; the chair frame has ferromagnetism; a magnet is embedded in the cleaning plate; and the front surface of the cleaning plate is provided with shifting grooves which are symmetrically arranged left and right. The outdoor chair has the advantages of being easy to clean and convenient to use, and is complete in overall function and high in practicability.