159 results about "Free water" patented technology

The invention discloses a seepage field adaptive analysis method and device based on a flexible polygon unit, and the method comprises the steps: dividing the polygon unit into a plurality of sub-regions, and constructing an internal water head field of each sub-region; recognizing a free water surface according to water head features extracted from the internal water head field of each sub-region; if the free water surface is recognized for the first time at present, or the error of the positions of the free water surfaces recognized by two adjacent rounds of iteration does not meet a preset condition, quadtree decomposition is carried out on the free water surface to obtain new sub-regions; returning to the step of extracting the water head features according to the internal water head field of each sub-region until the error of the positions of the free water surfaces identified by two adjacent rounds of iteration meets a preset condition, and obtaining a grid division result of the polygon unit; and performing seepage field analysis on the polygon units based on a grid division result to obtain a seepage field analysis result. According to the method, the complex seepage field is accurately simulated, and the optimal balance between high-precision discretization near the free water surface and the overall calculation efficiency is realized.

Disclosed in the present invention are a gel having a regulatable free water content and morphology, a preparation method therefor, and the use thereof. The method comprises: S1, preparing a solution A from a natural polymer material; S2, mixing a small molecule material containing a positively charged polar group with the solution A to obtain a composite solution B; S3, mixing the composite solution B with a regulator to obtain a composite solution C, stirring same, then adding a condensing agent to the reaction system, and carrying out a curing crosslinking reaction; and S4, removing the regulator and the condensing agent to obtain the gel. By adjusting the concentrations of the natural polymer material and the regulator, gels having different morphologies can be prepared; the gel undergoes a physical process to remove hydrogen bond interaction between the gel and free water, so that the content of free water attached to the surface of the gel can be regulated, thereby regulating the physical and chemical properties of the gel. The gel of the present invention has regulatable morphology and controllable elastic modulus, and has many advantages such as good lubrication effect, good biocompatibility and biodegradability, capability of being biologically active, and capabilities of stimulating cell growth and accelerating wound repair.

The invention relates to the technical field of soil physical parameter in-situ measurement, and discloses a soil layer natural water content portable intelligent measuring instrument based on multi-source sensing fusion, which comprises a composite probe assembly and an intelligent measurement and control host which are physically connected, the composite probe assembly is configured to be inserted into a soil layer to be tested to construct a multi-physical field test environment, and an electrical transceiving unit and an acoustic transceiving unit are integrated in the composite probe assembly. By constructing a cross physical field excitation and multiphase parameter collaborative decoupling mechanism, a multidimensional dynamic correlation model is established by using the thermosensitive drift characteristic of the sound velocity of a mixed medium during thermal disturbance and the transient step response of a dielectric constant under an acoustic radiation force field; the problems that the coupling influence of the water content and the volume weight cannot be distinguished and the conductivity of bound water and the conductivity of free water are difficult to separate in a traditional means are effectively solved, and four independent physical quantities including the volumetric water content, the in-situ dry volume weight, the bound water content and the actual conductivity of pore water are synchronously inverted through a single probe. And the decoupling precision of the equipment on complex multi-phase soil medium parameters is improved.

The invention relates to the technical field of water supply control, and discloses an intelligent quality-based pressure-superposed non-negative pressure water supply control system and method, and the system comprises a data collection control module, a volume identification module, a water age observation module, a mixing decision module, and an impedance verification module. The effective volume parameters of the steady flow compensation tank are inversed through the pressure response characteristics of the variable frequency booster pump set in the starting stage; dynamically calculating the hydraulic retention time in the tank based on the system flow and the effective volume; when the residence time exceeds a safety threshold value, a forced mixing strategy is generated, and municipal inlet water is driven to be mixed with residence water by adjusting the opening degree of a bypass electric adjusting valve and controlling a pump set to operate; and meanwhile, verifying the effectiveness of the mechanical action of the valve according to the deviation between the real-time power and the theoretical reference power of the pump set after the regulation instruction is issued. Volume parameters can be corrected in real time, aged water is actively replaced under the low-flow working condition, closed-loop verification is carried out on faults of an executing mechanism, and the water supply quality and the system reliability are guaranteed.

The invention discloses a primer and a method for quantitatively monitoring the biomass of sargassum hemiphyllum based on an environmental DNA technology, and belongs to the technical field of molecular ecology. The primer probe group comprises an upstream primer, a downstream primer and a fluorescent probe which are specifically targeted to the sargassum hemiphyllum mitochondria COX1 gene, and the sequence is shown as SEQ ID NO.1-3. The kit comprises the primer probe group, a qPCR (quantitative polymerase chain reaction) premixed solution, nuclease-free water and a sargassum hemiphyllum plasmid positive control. The method comprises the following steps: collecting a water sample, enriching eDNA, performing qPCR detection by using the primer probe group after extraction and purification, and realizing qualitative detection and quantitative evaluation of sargassum hemiphyllum through a Cq value or a standard curve. The method disclosed by the invention has the advantages of high sensitivity, strong specificity, no damage to the environment and target organisms, capability of realizing large-scale rapid general survey and the like, and is suitable for early warning of gulfweed blooms, investigation of population distribution and evaluation of ecological influence.

The present invention relates to a modified citrus fiber product, wherein the modified citrus fiber product has a gel strength of from 30 SAG to 100 SAG and a degree of esterification of from 30% to 100%. The invention also relates to a method for producing said modified citrus fiber product. The present invention avoids the use of an activation step involving the conversion of trapped water-insoluble pectin to free water-soluble pectin using chemicals (e.g., acids) while still obtaining a suitable amount of free water-soluble pectin to produce a citrus fiber product having a gel strength (SAG) of between 30 SAG and 100 SAG. Avoiding such an activation step ensures that the intrinsic factors of the pectin contained in the modified citrus fiber product are comparable to those found in the natural citrus fiber source.

The application relates to an automatic magnesium oxide coating analysis system and method, and belongs to the technical field of coating quality analysis. The method comprises the following steps: acquiring the properties, infrared spectrum and environmental temperature and humidity data of the magnesium oxide coating, and constructing a multi-source feature set; analyzing the distribution dispersion and local enrichment risk of free water based on a dynamic migration model, and analyzing the bond weakening degree and dissociation risk of combined water based on a chemical stability model; generating free water treatment process parameters for inhibiting structural damage and combined water treatment process parameters for preventing performance attenuation according to abnormal analysis results and coating properties; and through coupling influence analysis on the two types of process parameters, the balance requirements of coating structural integrity and chemical stability are coordinated, an optimized process scheme is generated, and synergistic regulation and control are realized. The application realizes accurate identification, independent analysis and synergistic control of free water and combined water, and improves the accuracy, reliability and quality consistency of coating moisture treatment.

The utility model relates to dehydration device technical field, and disclose a kind of sound-absorbing board production forming section dehydration device, and realize secondary extrusion dehydration by setting extrusion dehydration device, extrusion structure, suction structure etc., sound-absorbing board is extruded first, and sound-absorbing board is preliminarily extruded by upper roller and lower roller, and free water of board surface layer is extruded surface, and water of board extrusion is sucked by negative pressure inside water-collecting cavity, and it is evenly entered into water-collecting cavity inside by mesh surface, after sound-absorbing board is sucked and rebounded by back tent device, reach the inside of extrusion dehydration device of auxiliary frame A side, again extruded between upper roller and lower roller, and board is compacted to target thickness, simultaneously, water that moves out from core portion when rebounding is fluffy extruded, make negative pressure inside water-collecting cavity through mesh and promptly suck extruded water, wherein containing surface layer and core portion residual free water, and make water distribution even in sound-absorbing board interior, and it has the effect of uniform dehydration.

The utility model relates to the technical field of box type water supply, in particular to a box type non-negative pressure water supply device for municipal building water supply, which comprises an I-shaped chute plate A, an I-shaped chute plate B, a positioning mechanism and a damping mechanism, the positioning mechanism comprises a circular ring, a fixed rod and a spring, and the fixed rod is sleeved with the spring. Through the arrangement of the damping mechanism, eight dampers arranged at the corners of the bottom of the box-type water supply device body play a damping role, the situation that the service life of equipment is shortened due to vibration generated by working of electrical elements in the box-type water supply device body is avoided, and meanwhile the stability performance of the box-type water supply device body is improved; through the arrangement of the positioning mechanism, the insertion holes formed in the I-shaped sliding groove plate A and the I-shaped sliding groove plate B correspond to scale values, and the box type water supply device bodies with different lengths and widths can be matched by sliding the I-shaped sliding block and the positioning mechanism.

The present application relates to a kind of open channel water distribution equalization control method and system, method includes: according to the maximum water inflow, the total water inflow of total water inflow range is pre-set;All biological treatment units are divided into the fixed water amount group of control water inflow and the free water amount group of not control water inflow;When the water inflow of free water amount group and the water inflow of fixed water amount group reach preset condition, judge the total water inflow range of current needs adjustment and adjust the total water inflow range of current, then adjust the water inflow of fixed water amount group.The setting of group, make part of filter's water inflow be controlled according to total water inflow, then by adjusting the total water inflow range, get the most suitable water distribution mode, when not set total water inflow flow metering equipment in the biological treatment unit in sewage treatment facility, can be realized by the control logic through open channel water distribution mode to each biological treatment unit for more balanced water distribution purpose, finally guarantee the load balance of each biological treatment unit when running.

The invention discloses a stage targeting scallop adductor non-phosphorus water-retaining agent containing antifreeze glycopeptide and application, and relates to the technical field of food additives. The antifreeze glycopeptide-containing stage targeting scallop adductor phosphorus-free water-retaining agent consists of an agent A and an agent B, and does not contain phosphate additives, the agent A is permeable anti-freezing liquid and is prepared from the following components in percentage by mass: 5.0 percent to 9.0 percent of trehalose, 3.0 percent to 5.0 percent of sorbitol, 0.8 percent to 1.5 percent of sodium citrate, 0.4 percent to 1.0 percent of compound amino acid, 0.01 percent to 0.1 percent of high-activity anti-freezing glycopeptide, 0.01 percent to 0.05 percent of vitamin C, 0.01 percent to 0.05 percent of rosemary extract and the balance of water. According to the antifreeze glycopeptide-containing phase-targeting scallop adductor non-phosphorus water-retaining agent and the application thereof, ice crystal damage and protein denaturation are inhibited from the source, and cell-level protection of scallop adductors is realized. Through detection, the unfreezing loss rate of the treated scallop adductor is as low as about 2.12%, the cooking loss rate is as low as about 10.63%, and the water retention capacity is close to that of a commercially available phosphate water retention agent and is remarkably superior to that of an existing non-phosphorus water retention agent.

Methods of separating water, salt, CO2, and crude oil from wastewater, the methods comprising: providing gas / oil separation system that produces a waste saline water stream and a CO2 stream; providing an electrochemical cell having an anode, a cathode, and three electrodialytic compartments; feeding a fresh water stream to the anode to produce H+ and O2; feeding the waste CO2 stream and O2 to the cathode to produce bicarbonate (HCO3—) and hydroxide ions (OH−); feeding the waste saline water stream to a center electrodialytic compartment; wherein the sodium Na+ from the waste saline water stream reacts with the bicarbonate to form NaHCO3 and the chloride (Cl−) from the waste saline water stream reacts with the H+ to produce hydrochloric acid; and producing salt and desalinated water.

The present application relates to a kind of soft soil reconsolidation under dynamic load processing method, solve the vibration drainage of existing soft soil in consolidation method vibration frame structure, it is difficult to manufacture vibration support foundation, construction is inconvenient, the problem of destruction of foundation after recovery.The method mixes cement in upper layer soil, forms cement soil base layer with strength in C5-C15;Uniformly set water pipe on cement soil base layer;Vibration rod is set in each water pipe;Place stack load plate on cement soil base layer, and vibration machine is fixed on stack load plate;Vibration machine fixed on stack load plate vibrates, drives vibration rod in water pipe, and free water generated after vibration is collected in water pipe, water in water pipe is discharged using water suction pump, until no free water is discharged after a period of vibration operation.The present application solves the problem that general vibration machine cannot effectively vibrate deep layer soil, and removes free water generated after vibration from soil, simultaneously, promotes soil particle to rearrange, and enhances soil compactness.

The invention provides a preparation method of a fluorine removal agent based on modified red mud, which comprises the following steps: modifying industrial red mud, adding a certain amount of activated carbon, and mixing. The method for modifying the industrial red mud comprises the following steps: drying the industrial red mud and limestone until free water does not exist, and respectively grinding and sieving; mixing the ground industrial red mud and limestone according to a certain proportion, and adding a small amount of purified water to infiltrate to obtain a mixture of the industrial red mud and the limestone; adding an activating agent into the mixture for acidification activation, adjusting the pH value to be less than 1, stirring and standing to obtain an activated mixture; and evaporating the activated mixture to dryness, and calcining to obtain the modified red mud and limestone mixture. The industrial red mud is used as the raw material, the process is simple, the cost is low, waste resources are recycled, and the method has a good application prospect.

The invention relates to a two-component thermally conductive composition comprising: a composition (A) comprising: a silylated polymer, and a rheology agent (r1) selected from amide waxes and / or a rheology agent (r2) comprising: from 1% to 40% by weight of a bis-urea (a) obtained by reacting a primary aliphatic amine with a diisocyanate of molar mass less than 500 g / mol, relative to the total weight of the rheology agent (r2), and from 60% to 99% by weight of a specific plasticizer (b), relative to the total weight of the rheology agent (r2), said rheology agent (r2) being in the form of a suspension of solid particles of the bis-urea (a) in a continuous phase of plasticizer (b), and a composition (B) comprising: at least 1% by weight of a filler (C) relative to the total weight of the composition (B), the filler (C) contributing at least 0.0025% by weight of moisture relative to the total weight of the composition (B),Composition (A) and / or composition (B) further comprising at least one thermally conductive filler. The invention also relates to the use of a filler (C) having a specific moisture content for crosslinking, without the addition of free water, a two-component composition, the two-component composition comprising a composition (A) comprising a silylated polymer, and a composition (B) comprising said filler (C). Figure for the abstract: none.

The utility model provides a kind of fabric for clothing and contain its sweat suit. The fabric includes surface layer, membrane layer and bottom layer. The surface layer uses warp plain or weft plain knitting technology, and is treated using water repellent finishing process. The water repellent finishing process used by the surface layer contains fluorine-free water repellent auxiliary and C4, C6 water repellent auxiliary. The membrane layer is thermoplastic polyurethane membrane layer or polyurethane membrane layer. The sweat suit prepared by the above-mentioned fabric has windproof and light rainproof effect, providing comfortable wearing experience for the wearer.

Systems and methods for separating water from an oil and water mixture are provided. A free water knockout vessel includes a mechanical separation section, an electrostatic coalescence section, and a gravitational separation section. A process for separating water from an oil and water mixture includes mechanical separation of the “free” water, electrostatic coalescence of emulsified water via one or more electrode assemblies, and separation of the coalesced water.

The application discloses a breeding method for improving the quality of Sebastes schlegelii fry, and comprises the following steps: collecting parent fish in a Sebastes schlegelii original seed field, artificially cultivating the parent fish in a net cage at sea, and performing nutrition rejuvenation on the parent fish; obtaining offspring fry by using an artificial fry squeezing method; controlling reasonable culture density according to different fry specifications; screening and using natural plant active ingredients and common micro-ecological preparations which are easy to absorb; avoiding disinfection and drug use; and controlling water flow rate in different growth stages. The method integrates nutrition rejuvenation, artificial fry production, pollution-free water quality regulation and fry behavior state regulation, solves problems such as poor parent germplasm, dead fry or insufficient activity of fry, slow growth and poor stress resistance in the process of fry breeding, has strong controllability in the operation period, has high survival rate of fry, has remarkable growth promotion and immunity effect, has good prevention and treatment effect on bacterial diseases, realizes pollution-free fry breeding, can reduce disease occurrence and mortality, reduces the feed conversion ratio, and effectively improves the economic benefit of breeding.

This invention relates to a thickening and water-retaining agent with a branched network structure and its preparation method. The raw materials, by weight, include: 10 parts of unsaturated acid monomer; 5-40 parts of acrylamide; 1-5 parts of unsaturated amide monomer; 3-10 parts of unsaturated sulfonate monomer; 2-5 parts of workability-modifying monomer; 0.5-2 parts of oxidant; 0.5-6 parts of polymerizable reducing agent; and water. The thickening and water-retaining agent with a branched network structure prepared by this invention, during the hydration process of cement, continuously adds branched structure through the hydrolysis effect of amide groups, and continuously and slowly releases free water to replenish the free water consumed during hydration. This meets the flowability requirements of concrete after hydration, solving the problems of existing thickening and water-retaining agents that cannot simultaneously meet the initial and post-hydration thickening and water-retaining properties and flowability requirements of concrete, and also addressing the issue of storage stability.

The utility model relates to a concrete-free water-tight type telescopic device. An existing bridge expansion device is sealed in a concrete pouring mode, complete compactness cannot be guaranteed, and the water sealing performance is poor. The device comprises a water stop piece, the water stop piece is located at the top of a structural joint between a first beam body and a second beam body, and the two longitudinal ends of the water stop piece are fixed to the end face of the first beam body and the end face of the second beam body respectively; mounting grooves are formed in the upper parts of the end surfaces of the first beam body and the second beam body; and elastic sealing pieces are filled in the mounting grooves and above the water stop pieces. Concrete pouring is replaced by elastic sealing piece pouring, the elastic sealing piece can circulate in the space between the installation groove and the water stop piece, gaps between the water stop piece and the first beam body and gaps between the water stop piece and the second beam body are filled and sealed, sealing can be better conducted, the problem that water leakage is caused due to the fact that a traditional water stop belt is not installed in place is solved, and the service life of the water stop belt is prolonged. Therefore, the water sealing performance of the telescopic device is further improved.

The invention relates to the technical field of heavy oil detection, in particular to a method for detecting the content of organic chlorine in heavy oil, which comprises the following steps: removing free water from to-be-detected heavy oil containing free water to obtain a heavy oil sample containing emulsified water, taking out the heavy oil sample containing emulsified water, adding a solvent which has a boiling point higher than 204 DEG C and is insoluble in water to obtain a diluted crude oil sample, and measuring the content of organic chlorine in heavy oil. The method comprises the following steps: centrifuging and dehydrating a thin oil sample to obtain a dehydrated crude oil sample, distilling the dehydrated crude oil sample to obtain fractions at the temperature of 204 DEG C or below, and detecting by using a micro-coulomb method to obtain the content of organic chlorine in the thickened oil. According to the method, the water-insoluble solvent with the boiling point higher than 204 DEG C is used for diluting the thickened oil, then the distillate oil with the boiling point higher than 204 DEG C is distilled out, and then the content of the organic chlorine in the distillate oil with the boiling point higher than 204 DEG C in the crude oil is determined by the microcoulometric method, so that the method has the advantages of high efficiency, simplicity and accurate measurement result, meets the GB / T 18612 requirement, and can realize rapid and accurate detection of the content of the organic chlorine in the water-containing thickened oil.

This invention provides a highly efficient dehydration method for energetic and water-containing waste HTPB propellant, comprising: Step 1, barrier coupling sheet preparation: Under low temperature conditions of 5-10℃, the energetic and water-containing waste HTPB propellant is placed inside a barrier, protected by an inert gas, and pressed into propellant sheets with a thickness ≤1mm using a two-roller press; Step 2, fiber-like capillary adsorption: The propellant sheets obtained in Step 1 are spread flat on the surface of a multi-level porous fiber-like capillary matrix, and allowed to adsorb statically. Through capillary effect, free water on the surface of the propellant sheets is driven to migrate along the porous channels of the matrix and be captured, removing the surface free water; The fiber-like capillary matrix is ​​composed of a cellulose skeleton phase, a silica aerogel porous control phase, a hydroxylated nanocellulose interface functional phase, and a polyurethane substrate supporting and stabilizing phase; Step 3, negative pressure physical dehydration; Step 4, chemical selective dehydration; Step 5, safe recycling. This invention has high dehydration efficiency, retains thermal stability, is safe and controllable, and has low cost.

The invention discloses a non-phosphorus water-retaining agent for meat products as well as a preparation method and application of the non-phosphorus water-retaining agent, and belongs to the field of food processing. The non-phosphorus water-retaining agent comprises the following raw material components in percentage by weight of meat products: 0.3%-0.6% of konjac glucomannan, 0.3%-0.6% of fructus momordicae powder, 0.1%-0.3% of red beet root powder, 0.2%-0.6% of trehalose and 0.1%-0.4% of edible baking soda. The non-phosphorus water-retaining agent accounts for 1.5-2.0% of the total mass of the meat product. All the raw materials of the phosphorus-free water-retaining agent meet the requirements of national food safety and hygiene standards, and only need to be added to raw meat before rolling and kneading, so that the anti-freezing activity and the yield of meat products can be remarkably improved, the sensory characteristics can be improved, and the phosphorus-free water-retaining agent is convenient to operate, safe and efficient.

The application discloses a fermentation treatment equipment and method for tylosin waste liquid, relates to the technical field of tylosin waste liquid treatment, and aims to solve the technical problem of low dewatering efficiency caused by the 'water film wrapping' of high-viscosity sludge. The application realizes efficient and deep dewatering of sludge through four-stage progressive dewatering modes and collaborative design. The equipment is based on the cooperation of centrifugation and extrusion, and can quickly separate free water and shallow bound water. Then, the 'corner shearing' is used to fill the dewatering blind area and ensure the uniformity of sludge dewatering in the whole area. Subsequently, the'multi-point concave-convex extrusion' is used to tear the deep water film and improve the dewatering depth. Finally, the 'needle column puncture' is used to remove the residual water film and completely reduce the water content of the sludge. The four-stage dewatering modes are seamlessly linked, and the self-adaptive sealing structure and energy collaborative design are used, so that the sludge leakage and secondary pollution are avoided, the unit treatment energy consumption is reduced, and the pain points of the traditional equipment, such as incomplete, uneven and low-efficiency dewatering, are solved.

The invention relates to the technical field of detergent compositions, and discloses a preparation method of a seaweed extract composite disinfecting and killing detergent composition, which comprises the following steps: under temperature-controlled stirring, mixing alkyl glycoside and a quaternary ammonium salt cationic bactericide according to a specific molar ratio and a free water content of less than 55% to construct a high-viscosity water-deficient lamellar liquid crystal shielding phase; the shielding phase is immersed and injected into a seaweed extract substrate solution, shearing dispersion is performed at a specific rate to obtain the composition, a metastable-state water-deficient layered liquid crystal structure is constructed, the cationic bactericide and the anionic seaweed extract are physically isolated through the steric hindrance effect at the mixing moment, flocculation caused by charge confrontation is effectively blocked, and the stability of the composition is improved. Thermodynamically stable coexistence and functional compatibility of the two in a single water phase system are realized, and the bactericidal activity can be released during dilution use.

1. Name of the product in this design: Faucet (no water tank required I). 2. Purpose of this design: For use in faucets. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model. 5. The bottom surface of this product is a part that is not easily seen or cannot be seen during use, so the bottom view is omitted.

There is provided a liquid or gel composition for generating hydrogen peroxide. The composition comprises enzyme that is able to convert a substrate to release hydrogen peroxide; substrate for the enzyme; and polymer. The composition does not comprise sufficient free water to allow the enzyme to convert the substrate, has a water activity (aw) of 0.7 or less, and / or comprises 5% or less, by weight of water. The composition may have droplets of supersaturated aqueous solution comprising the substrate which are suspended in the polymer. There may be greater than 70%, by weight, of the polymer in the composition. The composition may comprise less than 2%, by weight, non-aqueous solvent, and i) greater than 50%, by weight, of the polymer, and / or ii) less than 20%, by weight, of sugar.

An expansion faucet comprises a base, an expansion faucet body and a water supply mechanism, an assembly opening is formed in one side of the base, one or more expansion faucet bodies can be installed on the other side of the base, the base, the expansion faucet bodies and the water supply mechanism which are split are adopted, multi-water-source independent control can be achieved without modifying a table top, and the installation cost and the construction difficulty are remarkably reduced; through the layout design of the rotatable base and multiple through holes, the limitation of a traditional single-bottom-pipe structure is broken through, the number of faucets is increased or decreased according to needs, and the requirements of diversified water use scenes such as water purification and cup washing are met; and the water guide pipe is rotationally matched with the valve body, so that 360-degree dead-corner-free water outlet adjustment can be realized, and the use convenience is greatly improved. According to the invention, while the structure is simplified and the manufacturing cost is reduced, the product is endowed with strong expansibility through standardized interface design, and an economical and efficient solution is provided for upgrading a kitchen water system.

The invention relates to the technical field of waterproof agent preparation, in particular to preparation of a fluoride-free waterproof agent. The preparation method comprises the following steps: pre-emulsifying octadecyl methacrylate, acrylic acid, an emulsifier and deionized water, and dynamically adjusting the material ratio based on the solid content; carrying out seed emulsion polymerization on part of the pre-emulsion and an ammonium persulfate solution, and dynamically regulating and controlling the dropwise adding rate of an initiator based on the particle size; dropwise adding the remaining materials for nuclear layer polymerization, and supplementing the initiator based on the monomer conversion rate; adding gamma-aminopropyltriethoxysilane and tetraethoxysilane into the core-layer emulsion, adjusting the pH value through ammonia water, carrying out an in-situ sol-gel reaction, and dynamically adjusting and controlling the addition amount of the ammonia water based on Zeta potential to form an organic-inorganic hybrid shell layer; and finally, cooling and filtering to obtain the fluoride-free waterproof agent, and optimizing the dosage of the silane coupling agent in the next batch based on the centrifugal precipitation rate. The problems that an existing fluoride-free waterproof agent is poor in water washing resistance and poor in hand feeling after being washed for multiple times are solved.

This invention relates to the field of water purification technology, specifically providing a membrane-free water purification device and its control method, aiming to solve the problem of increased operating costs due to the frequent replacement of reverse osmosis membranes in existing water purifiers. To this end, the water purification device of this invention includes a water flow distribution device, a first treatment chamber, a second treatment chamber, and an electro-adsorption assembly. The two outlets of the water flow distributor are respectively connected to the inlets of the first and second treatment chambers. The electro-adsorption assembly includes a reversing device connected to a power source and a first electrode plate and a second electrode plate respectively disposed in the first and second treatment chambers, connected to the reversing device. By switching the connection mode of the first and second electrodes with the positive and negative terminals of the power source at a certain frequency, the first and second treatment chambers alternately function as purified water discharge chambers for adsorbing calcium and magnesium ions and as wastewater discharge chambers for discharging calcium and magnesium ions. Calcium and magnesium ions can be removed without the use of a filter membrane, reducing operating costs.