53results about How to "Efficient retention" patented technology

The utility model relates to a kind of environment-friendly sewage sedimentation pretreatment device, it is related to sewage treatment technical field, including pre-sedimentation tank, the upper portion of the pre-sedimentation tank is provided with separation cylinder, the front end of the separation cylinder is installed with sewage inlet pipe in one side, the upper portion of the separation cylinder is installed with separation water outlet pipe, the bottom of the separation cylinder is installed with sludge discharge pipe by connecting pipe, one end of the sludge discharge pipe is equipped with first motor, the other end of the sludge discharge pipe is equipped with sludge discharge port, the inside of the pre-sedimentation tank is equipped with multiple equidistant distribution and parallel inclined plate, the bottom of the pre-sedimentation tank is conical structure, and the bottom of conical structure is equipped with sludge discharge cavity, the lower end of one side of the sludge discharge cavity is installed with second motor, the inside of the sludge discharge pipe and sludge discharge cavity is all installed with auger mechanism, and the scheme solves the problem that a large number of and complex component impurity particles in sewage are not treated directly to deposit, and the problem that the deposition effect is poor and the burden of deposition equipment is increased.

The invention discloses a treatment system for synergistically removing odor substances and a new pollutant PFAS in water and a treatment method thereof. The treatment system comprises a pre-oxidation unit, an algae removal, adsorption and clarification unit, a membrane separation and concentration unit and a destruction unit which are connected in sequence. The pre-oxidation unit is provided with an oxidation pond with a transverse reciprocating dynamic aeration assembly, so that the ozone mass transfer efficiency is improved. The algae removal, adsorption and clarification unit enables a suspended carbon mud bed to periodically expand and contract through a pulse generator so as to strengthen adsorption. The membrane separation and concentration unit adopts a modified polyether sulfone conical-end filtering membrane and is matched with an online cleaning mechanism, so that PFAS is efficiently intercepted, and secondary pollution is avoided. The destroying unit is used for carrying out synergetic high-temperature incineration on the membrane separation concentrated water and the waste carbon mud, and PFAS is thoroughly decomposed at the temperature higher than or equal to 900 DEG C; by optimizing ozone aeration, pulse adsorption, fluorine-free membrane separation and collaborative incineration, efficient collaborative removal of odor substances and new pollutant PFAS and harmless treatment of waste are achieved, the system integration degree is high, the treatment effect is good, and the risk of secondary pollution is avoided.

The application discloses a whitening and freckle-removing composition containing white tomato and chases yellow grass, a preparation method and application thereof, and belongs to the technical field of food, wherein the whitening and freckle-removing composition is composed of white tomato powder and chases yellow grass powder with a weight ratio of 1-3:2-7. The preparation method comprises the following steps: (1) beating, separating, concentrating and drying white tomatoes to obtain white tomato powder; (2) soaking chases yellow grass in acidic water, performing solid-liquid separation, concentrating and drying the obtained clear liquid to obtain chases yellow grass powder; and (3) mixing the white tomato powder and the chases yellow grass powder. The application utilizes the combination of white tomatoes and chases yellow grass, and improves the preparation process of chases yellow grass, so that the two components produce a synergistic effect in inhibiting tyrosinase activity and inhibiting melanin production.

The application discloses a paper-based and pulp molded product strong water-based structure resin composition for constructing a fiber matrix, a kit and a preparation and application method thereof, and belongs to the technical field of papermaking wet end chemistry and pulp molding materials. In response to the global trend of replacing plastic with paper and fluorine-free control of food contact materials, the application aims at the pain point of failure of traditional chemicals in a high recycling pulp proportion and a closed water circulation high conductivity system, and constructs an acrylic polycarboxylic acid polymer and inorganic-organic dual charge buffer synergistic system. The scheme realizes the multiplication effect of physical strength such as breaking and ring pressure and the water resistance and oil resistance barrier performance by a unique crosslinking mechanism at a very low dosage, which is better than conventional enhancement technology on the market. The composition is a full water-based system and does not contain perfluorinated compounds, which ensures complete pulp recycling while giving the product excellent wet stiffness and film-forming density, and provides a green solution with high efficiency, low cost advantage and compliance for the papermaking and pulp molding industry.

This utility model discloses a waste treatment device for isothiazolinone production, relating to the field of isothiazolinone production technology. The waste tank is connected to a first filter, the first filter is connected to a settling tank, the settling tank is connected to a distillation tank, the distillation tank is connected to a degradation tank, the degradation tank is connected to a sedimentation tank, the sedimentation tank is connected to a second filter, the second filter is connected to a nanofiltration membrane device, and the nanofiltration membrane device is connected to a treatment water tank. This device can effectively remove harmful substances from the isothiazolinone production waste, achieving harmless treatment of the waste and also realizing resource recycling to a certain extent, thus possessing good environmental and economic benefits.

The invention relates to the technical field of polishing equipment, discloses a polishing machine tool for plastic wheels of toy cars, and aims to solve the problems that the polishing time is long, molten slag scratches hubs, and the polishing quality of the plastic hubs is affected. Through the arrangement of the grinding mechanism and the discharging mechanism, the basic shaping and deburring capacity is provided through a grinding wheel, grinding particles serve as free grinding materials and are continuously bitten into a contact grinding area by two wheel bodies rotating in the same direction at different speeds, the composite effect of rolling grinding, rolling polishing and micro cutting is formed, the grinding quality is greatly improved, and meanwhile, the grinding efficiency is improved. Partial sliding friction is replaced by rolling friction, the grinding heat is greatly reduced, the generation amount of plastic slag is reduced, the influence on the grinding quality of the plastic hub is reduced, in addition, the plastic slag attached to the surface of the grinding wheel is continuously scraped by the grinding particles, self-cleaning of the grinding wheel is achieved, and the common problems that the grinding wheel is prone to sticking, the surface is gelatinized and scratched during plastic grinding are solved.

The utility model discloses a multi-section variable diameter methanol removal distillation tower, and particularly relates to the technical field of methanol distillation towers, the multi-section variable diameter methanol removal distillation tower comprises a supporting assembly, a distillation assembly is fixedly connected to an inner cavity of the supporting assembly, a cooling assembly is fixedly connected to the upper part of the distillation assembly, and a separation assembly is fixedly connected to the left part of the cooling assembly. The lower portion of the separation assembly is fixedly connected with a slag prevention assembly, and the right portion of the supporting assembly is fixedly connected with a heating assembly. According to the multi-section variable-diameter methanol removal distillation tower disclosed by the utility model, the separation of methanol liquid and gas can be realized through the designed separation assembly, the cooled waste gas possibly still contains uncondensed methanol steam or tiny liquid drops, and the uncondensed methanol steam or tiny liquid drops are blown back into the distillation tower through the fan, so that the uncondensed methanol steam or tiny liquid drops can participate in the gas-liquid mass transfer process again and are further separated and recycled; meanwhile, heat carried in the waste gas returns to the tower along with the gas flow, and the heat can partially replace the heating load of the reboiler.

This utility model discloses a heat dissipation and dust prevention device for a frequency converter, including a frequency converter body. The bottom shell of the frequency converter body is provided with a heat dissipation window. It also includes a dust prevention mechanism and a cooling fan. The dust prevention mechanism includes a dust cover, a bent guide tube, a first resistance frame, a second resistance frame, dustproof cotton sheets, and a screw seat. By setting the dust prevention mechanism at the frequency converter body outside the heat dissipation window, together with the cooling fan, a heat dissipation and dust prevention structure is formed. The dust prevention mechanism can effectively trap dust through components such as the dust cover, the first resistance frame, and the dustproof cotton sheets in the second resistance frame, preventing dust from adhering to the cooling fan and fins inside the frequency converter body. Furthermore, the dust cover of the dust prevention structure is equipped with a cooling fan. The cooling fan, together with the bent guide tube, the dust cover, and the side wall air grooves of the first resistance frame and the second resistance frame, form a meandering airflow structure, which intercepts dust while ensuring smooth airflow and ensuring efficient heat dissipation of the frequency converter.

This utility model discloses a pretreatment device for raw materials in the production of high-purity Kathon, relating to the field of Kathon production technology. The inlet of an ultrasonic reactor is connected via pipelines to a methylchloroisothiazolinone raw material tank and a deionized water tank. The outlet of the ultrasonic reactor is connected via a screw pump to a ceramic membrane device. The liquid phase outlet of the ceramic membrane device is connected via pipelines to a distillation column. The top gas phase outlet of the distillation column is connected via pipelines to a light component tank, an organic solvent tank, and a purified methylchloroisothiazolinone tank. This device achieves effective separation and purification of different components, improving product purity, while simultaneously recovering organic solvents and reducing production costs.

The invention provides a preparation method of micro-powder-free cobalt hydroxide, belongs to the technical field of lithium ion battery material preparation, and solves the problems that the content of micro powder is high and the synthesis process is difficult to control when the cobalt hydroxide is prepared in the prior art. The method comprises the following operation steps: preparing a solution, carrying out a synthetic reaction, aging, washing, drying and the like, and synthesizing a crimson beta-type cobalt hydroxide product with a product index D0 greater than or equal to 3 microns and regular morphology by controlling the temperature of a synthetic raw material solution at-5 to + 5 DEG C and controlling proper synthesis conditions. The cobalt hydroxide prepared by the method is regular in microstructure, does not contain fine micro-powder particles, and can be used for preparing cobaltosic oxide required by high-voltage lithium cobalt oxide.

This utility model provides an automatic feeding bucket for sludge excavation, belonging to the field of excavation bucket technology. It addresses the problems affecting sludge excavation efficiency, increasing operator workload, and hindering the flexibility and convenience of bucket use in practical applications. The bucket includes a main body with two mounting supports fixedly connected to the left and right sides of the upper end of the main body; an adjusting bracket slidably connected to the inner end of the main body; a hydraulic cylinder located on the inner side of the upper end of the main body; a connecting block fixedly connected to the outer end of the hydraulic rod; a guide cylinder fixedly connected to the upper end of the adjusting bracket; a positioning support column coaxially fixedly connected to the outer end of the guide cylinder; and a positioning mounting structure positioned between the positioning support column and the connecting block. This design reduces the frequency of cleaning the bucket body and the subsequent dewatering load, effectively improving sludge excavation efficiency, alleviating operator workload, and enhancing the flexibility and convenience of the bucket in practical applications.

The utility model discloses a PC stone-like water permeable brick, and relates to the technical field of water permeable bricks. The water permeable hole is formed in the brick body, and a filter frame assembly is mounted on the water permeable hole; the water guide groove is annularly formed in the surface of the brick body and communicated with the water permeable holes, and the depth of the water guide groove is gradually increased from the periphery to the middle; the first buckle assembly and the second buckle assembly are arranged on the left face, the right face, the front face and the back face of the brick body respectively and used for left-right splicing and front-back splicing of the adjacent brick bodies respectively. Through the arrangement of the water permeable holes and the water guide grooves which are matched with the peripheries of the water permeable holes and are gradually deepened from the periphery to the middle, water can be drained into underground water in a concentrated mode, and the filtering frame assemblies installed on the water permeable holes can effectively intercept large pollutants such as suspended particles and leaves in rainwater in the rainwater concentrated drainage process. Meanwhile, the filter frame assembly is simple in structure, convenient to mount with the brick body and convenient to clean.

The invention discloses a coal gasification slag-based porous sponge for uranium mine wastewater treatment and a preparation method thereof, relates to the field of radioactive wastewater treatment and solid waste recycling, and aims to solve the technical problems of poor adsorption inertia, poor interface stability and insufficient selectivity of the existing coal gasification slag-based material in strongly acidic uranium mine wastewater. According to the technical key points, the method comprises the following steps: step 1, preparing an alkaline solution, putting the coal gasification slag into the alkaline solution for etching treatment, and collecting the treated coal gasification slag to obtain solid powder A; 2, grinding and mixing the solid powder A and urea, and performing pyrolysis treatment in a nitrogen atmosphere to obtain nitrogen-doped coal gasification slag-based porous sponge B; 3, placing the porous sponge B in a mixed acid solution of nitric acid and hydrochloric acid for carboxylation modification to obtain sponge C with the surface rich in carboxyl; step 4, immersing the sponge C into a PEI aqueous solution; pEI is chemically bonded with the sponge through carboxyl on the sponge C, and the coal gasification slag-based porous sponge is obtained.

The application discloses a fluorine-modified graphene oxide-based aerogel bilayer as well as a preparation method and application thereof, and comprises a graphene oxide-based composite aerogel, wherein a main body of the graphene oxide-based composite aerogel comprises graphene oxide and sodium cellulose or chitosan; one side of the graphene oxide-based composite aerogel is subjected to modification treatment of fluorochlorosilane to provide hydrophobic and oleophobic properties. The preparation method comprises the following steps: preparing a graphene oxide aqueous solution and an aqueous solution of sodium cellulose or chitosan; mixing the graphene oxide solution and the sodium cellulose solution or the chitosan solution; freeze-drying the mixed solution, and then vacuum drying to obtain an aerogel; and using an organic solution containing fluorochlorosilane to infiltrate a non-woven fabric, placing the infiltrated non-woven fabric on a surface of the aerogel, standing, and drying. The graphene oxide-based aerogel is subjected to hydrophobic and oleophobic modification on the upper layer by using fluorochlorosilane, and the lower layer is hydrophilic, so that the graphene oxide-based aerogel has good salt resistance and stain resistance and high evaporation efficiency, and has a wide application prospect in the field of seawater desalination.

The application provides a split-hole plate type grid cleaner and relates to the technical field of water treatment equipment, which solves the technical problems of easy clogging, low interception efficiency and grid residue leakage in the prior art. The device is a split-hole plate type grid cleaner, which comprises a grid mechanism, a plurality of alternately arranged first plates and second plates, a plurality of filter holes respectively arranged on the contact sidewalls of the first plates and the second plates, a box body composed of two symmetrically arranged box plates, a plurality of back-shaped sliding grooves respectively arranged on the opposite inner sidewalls of the two box plates, a cleaning mechanism for automatically cleaning the first plates and the second plates, a conveying system comprising a transmission conveying mechanism and a cleaning conveying mechanism, the transmission conveying mechanism is used for driving the first plates and the second plates to circularly move along the back-shaped sliding grooves, and the cleaning conveying mechanism is used for accelerating the driving of the plates when the plates reach below the cleaning device, so that the first plates and the second plates are separated, and the cleaning device can efficiently clean the surfaces of the plates.

The utility model provides a rolling brush with a self-cleaning function, which relates to the technical field of rolling brushes and comprises a rolling brush mounting rack, two first bearings are fixedly inserted into the inner surface wall of the rolling brush mounting rack, a rolling brush body is fixedly inserted between the interiors of the two first bearings, and two first sliding chutes are formed in the inner surface wall of the rolling brush mounting rack; and a moving frame is slidably embedded between the inner surface walls of the two first sliding grooves, two second bearings are fixedly inserted into the inner surface wall of the moving frame, and a brush roller is fixedly inserted between the interiors of the two second bearings. According to the self-cleaning rolling brush, under the interaction of all the assemblies of the device, the self-cleaning function is achieved through the rolling brush, complexity and low efficiency of manual cleaning are avoided, the rolling brush can be kept in a good cleaning state all the time through automatic cleaning, the cleaning capacity on the target surface is more stable and efficient, and therefore the overall cleaning efficiency is improved, and the service life of the rolling brush is prolonged. And secondary pollution to the surface of a target caused by falling of dirt in subsequent operation is avoided.

This invention relates to the field of water treatment technology, specifically to a method for adsorbing heavy metals in copper-containing wastewater. The method includes: preparing a modified chitosan composite material; preparing a composite fiber filter membrane; preparing composite hydrogel microspheres; and treating the copper-containing wastewater. This invention first dissolves chitosan and mixes it with nano-ferric oxide to form a physical coating, imparting magnetic responsiveness to the chitosan. Then, it modifies the chitosan using 1,3,5-phenyltricarboxylic acid and triethylenetetramine. A three-dimensional network cross-linked structure is constructed by reacting glutaraldehyde with the amino groups of chitosan and triethylenetetramine to produce modified chitosan. Finally, graphene oxide is loaded onto the surface and pores of the modified chitosan through impregnation and drying to obtain a modified chitosan composite material. When this material is added to pretreated wastewater, it can significantly improve the adsorption capacity for copper ions in copper-containing wastewater.

The utility model discloses an active carbon dehydration technology field's centrifugal spin -dryer for active carbon dehydration, including drive base, the top of drive base is installed with centrifugal dehydration jar, and the both sides of drive base still are provided with drainage component respectively, and drainage component includes support box frame, and the top of support box frame is connected with filter part, and the top side of centrifugal dehydration jar is connected with sealing cover, and the inside of centrifugal dehydration jar is provided with centrifugal filter, and the power transmission connection between drive base and centrifugal dehydration jar and the centrifugal filter structure of the inside careful design of centrifugal dehydration jar, can rapidly and efficiently complete the dehydration treatment after active carbon water washing, and the tacit cooperation of the drive base of electrified operation with first connecting disc and second connecting disc, accurate drive centrifugal cylinder body carries out high -speed rotation, and under the action of the powerful centrifugal force of active carbon granule, the free water remaining in its inside and surface can be effectively spun out, realizes the non - destructive dehydration of active carbon granule.

This utility model discloses an auxiliary device for improving the accuracy of gas chromatography determination of N,N-dimethylformamide in water, belonging to the technical field of N,N-dimethylformamide determination. This auxiliary device includes an auxiliary mechanism and a filtration mechanism. The auxiliary mechanism includes a housing with a door hinged to one side of the upper end via a pair of hinges. A water inlet pipe is installed at the upper end of the door, and a drain pipe is installed at the center of the bottom end of the housing. A limiting frame is installed at the bottom of the housing. The filtration mechanism includes a mounting frame with a pair of equal-dividing plates fixedly installed inside. Slide rails are installed on both sides of the mounting frame at the bottom of the pair of equal-dividing plates. A filter layer and an adsorption layer are slidably installed between the two pairs of slide rails. This utility model can effectively improve the accuracy of gas chromatography determination of N,N-dimethylformamide and has high practical value.

The application discloses a kind of high-efficiency interception polyvalent anion and cation nanofiltration membrane and its preparation method and application.The method includes the following preparation process:1) preparation concentration is 0.1-2wt% of apigenin class of substance aqueous solution, and concentration is 0.1-0.5wt% of multi-acid chloride organic phase solution;2) make polymer support membrane in aqueous solution 1-5min, remove the surface excess solution, then immerse into oil phase solution, react 1-15min;3) after reaction, remove the surface excess solution, solidify 5-20min under 60-80 DEG C, obtain the nanofiltration membrane.The application is with apigenin, apigenin-7-o-glucuronide and / or isofraxidin as aqueous monomer, and multi-acid chloride is prepared by interfacial polymerization reaction to obtain negative NF membrane, not only maintain the high interception rate to polyvalent anion, and also have very high interception rate to polyvalent cation, can efficiently permeate monovalent ion, and water flux is larger.

The present application relates to the technical field of membrane method waste lithium battery recycling, and particularly relates to a membrane separation and concentration method for recovering positive electrode material of waste lithium battery and application thereof. The method comprises the following steps: mixing the positive electrode material of the waste lithium battery after discharging and disassembling with acid liquor and a reducing agent solution, and then performing heating and stirring treatment, filtering insoluble substances, and obtaining leaching liquor; pumping the leaching liquor into a primary nanofiltration membrane system for primary nanofiltration treatment, obtaining primary nanofiltration water and primary nanofiltration concentrated liquid; pumping the primary nanofiltration water into a secondary nanofiltration membrane system for secondary nanofiltration treatment, obtaining secondary nanofiltration water and secondary nanofiltration concentrated liquid; and pumping the secondary nanofiltration water into a reverse osmosis system for reverse osmosis concentration treatment, obtaining reverse osmosis water and reverse osmosis concentrated liquid. The application is the application of the method in recovering lithium ions in the positive electrode material of the waste lithium battery. The present application can efficiently, highly and at low cost recover each metal cation in the positive electrode material of the waste lithium battery.

The utility model relates to the technical field of termite trapping equipment, in particular to a termite trapping and killing integrated device which comprises an outer cylinder, a trapping cavity used for collecting termites is formed in the outer cylinder, a cover plate is installed on the top of the outer cylinder, and a plurality of trapping openings allowing the termites to enter are formed in the outer side of the cover plate. The inner wall of the trapping cavity is provided with a plurality of ultraviolet lamps capable of killing termites, the ultraviolet lamps are externally connected with a control switch through wires, the control switch controls the ultraviolet lamps to be turned on and turned off, and the inner side of the bottom of the outer cylinder is provided with a termite trapping agent used for trapping the termites. According to the termite trapping and killing integrated device, through multiple trapping design, the attraction effect on termites is remarkably improved. The termite trapping agent arranged on the inner side of the bottom of the outer cylinder can emit specific smell and generate strong attraction to termites; and a sweet coating is arranged on a pine plate of the bait assembly in the middle of the trapping cavity, so that the attraction to the termites fond of sweet food is further enhanced.

The application discloses a card development method and device, equipment, storage medium and program product, and relates to the technical field of card development. The method comprises the following steps: triggering the operation of pulling a target card library in an interactive page of a browser to obtain the target card library from a server; a code editing tool stores the target card library in a local file system; based on the target card library stored in the local file system, triggering the display operation of the target card in the interactive page to display the target card in the interactive page; in response to the front-end building tool monitoring that the file corresponding to the target card in the local file system is modified, sending a hot update message to the browser, and the hot update message is used to instruct the browser to refresh the target card displayed in the interactive page based on the edited file; and based on the code editing tool, saving the target card library after editing. Therefore, the fluency and overall efficiency of card development are improved.

This utility model relates to the field of dyeing and printing wastewater treatment technology, specifically a dyeing and printing wastewater pigment filtration device, including a filter box with external pipes on both sides. The filter box has a filter groove inside, a rinsing plate and a maintenance cover at the top, a splicing mechanism and a rinsing mechanism between the rinsing plate and the filter groove, a sealing box in the filter groove, a slot at the top of the sealing box connecting to the bottom, filter ports on both sides, a composite filter structure in the slot, and a threaded hole at one end of the sealing box penetrating the sealing box. This device achieves automatic cleaning of the composite filter structure through the cooperation of a movable sealing box and a rinsing structure, reducing maintenance difficulty and extending filter media life. The overall structure is reasonable and highly practical.

This invention belongs to the field of wet electronic chemical purification, specifically relating to a membrane chromatography filter membrane for removing charged ions from liquids and its preparation method, including the following steps: S1, preparing casting solutions: preparing positively charged layer casting solutions, neutral layer casting solutions, and negatively charged layer casting solutions separately; S2, using a three-layer die to sequentially extrude the positively charged layer casting solutions, neutral layer casting solutions, and negatively charged layer casting solutions onto a polyester film; S3, exposing the casting solutions under set temperature, humidity, and airflow conditions to allow for initial phase separation; S4, immersing the coated film in a pure water coagulation bath to complete phase separation and solidification; S5, rinsing, drying, and then winding to obtain the membrane chromatography filter membrane. By designing a special three-layer composite structure with a "positively charged layer-neutral layer-negative layer," the filter membrane can simultaneously adsorb anions and cations in the solution during a single filtration process, overcoming the limitation of traditional single-charge membranes that can only remove one type of ion, thus improving purification efficiency.

This utility model discloses a V-type sand filter air-water backwash distributor, belonging to the field of V-type sand filters. The side wall of the V-type sand filter body is equipped with multiple water and air pipes. Each water and air pipe forms a set of air-water backwash components and corresponds to a set of filter plates. Each water or air pipe has a flow monitoring pipe connected to its outer end, and a control valve is installed at the outer end of the flow monitoring pipe to control the opening and closing of the air and water supply. The equipment employs flange connections and sealing ring designs in multiple places to ensure reliable connections and good sealing. The inlet water pipe and liquid inlet valve allow for alternating use during equipment maintenance, improving flexibility. During maintenance, disassembling the inlet and outlet pipes, flow monitoring pipes, and control valves allows for inspection and cleaning of the water and air pipes, and facilitates easy cleaning or replacement of the filter plates, ensuring continuous and stable operation of the equipment. The equidistant distribution of the air-water backwash components and filter plates ensures a uniform and efficient filtration system.

The application discloses a kind of integrated equipment of licorice emulsification and extract preparation, including reaction tank, the inside of the reaction tank is nested with temperature control tank, and the bottom of temperature control tank is respectively provided with water inlet pipe and water outlet pipe, the inside of temperature control tank is fixedly installed with anticorrosion tank, and the bottom of anticorrosion tank is conical structure, the bottom of anticorrosion tank is fixedly installed with discharge valve, the bottom of reaction tank is fixedly installed with support frame.The application realizes high integration in structural design, by integrating each functional module, the number of equipment and supporting facilities investment are greatly reduced, while the floor area of the whole system is significantly reduced, thereby saving space resources, its inside adopts wall scraping design, and forms outer stator structure in combination with double-shaft stirring assembly, not only improves material flow efficiency, but also effectively enhances the shearing and mixing effect of emulsification process, so that emulsification effect is significantly improved.

The utility model relates to the technical field of alumina washing, specifically is a kind of alumina multistage filtration washing device, including machine body, the left side middle part of machine body is fixedly connected with feed seat, the right side of machine body is fixedly connected with discharge seat, the inner wall of machine body is movably connected with rotating stand, the outer wall inside of rotating stand is fixedly connected with filter plate, the left side upper of machine body is fixedly connected with transmission case, the left side front of machine body is fixedly connected with control cabinet, the inside of transmission case is equipped with rotating mechanism, the inside upper of machine body is equipped with flushing mechanism. The utility model has realized the flushing of raw material rotation filtering and filter plate, has promoted the high efficiency and convenience of device.

The application provides a deformation-resistant paperboard for a packaging box and a preparation method thereof. The deformation-resistant paperboard comprises two layers of cardboard and a core layer arranged between the two layers of cardboard. The core layer comprises the following raw materials in parts by mass: 100 parts of wood leaf fiber; 2-4 parts of nanocellulose; 8-12 parts of polyvinyl alcohol; 1-3 parts of polyethylene imine; 4-8 parts of hydrophilic modified inorganic filler; and 1-3 parts of crosslinking agent. By optimizing the structure and component ratio of the core layer, the crease area of the paperboard can remain stable deformation after hot pressing and forming, and is not easy to rebound. Meanwhile, the paperboard can maintain good dimensional stability under humidity change conditions, thereby improving the forming precision and use durability of the packaging box.