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239results about How to "Uniform infiltration" patented technology

Device for measuring soil water movement and soil structure and method

The invention discloses a device for measuring soil water movement and a soil structure. A water supply part comprises a water supply tank, a plug, a valve and a Mahalanobis bottle. The water tank is communicated with the Mahalanobis bottle through a pipeline. The top of the Mahalanobis bottle is provided with a first through hole. The plug is arranged at the position of the first through hole. The valve is arranged at the lower part of the Mahalanobis bottle. A testing soil column comprises an upper cover and a body. The top part of the upper cover is provided with a second through hole. Thesecond through hole is connected with the valve through a pipeline. A glass screen is arranged inside the body. The lower part of the glass screen is provided with filter paper. The lower part of thebody is provided with a water outlet. The side wall of the body is provided with a third through hole. A soil moisture sensor is arranged at the position of the third through hole. The soil moisture sensor is connected to an acquisition device through a lead wire. A data acquisition part comprises the acquisition device, an X-ray machine and a computer. Output ends of the acquisition device and the X-ray machine are connected to an input port of the computer. The invention also discloses a method for measuring the soil water movement and the soil structure.
Owner:CHINA INST OF WATER RESOURCES & HYDROPOWER RES

Method for simulating soil slope instability induced by groundwater

The invention discloses a method for simulating soil slope instability induced by groundwater. The method is characterized by comprising the following steps: a, putting a physical model on a centrifugal machine; b, raising the height of an external water tank, opening a water outlet valve and a water inlet valve, carrying out water seepage into a soil layer according to the thickness of a saturated soil layer and completing the saturation process of a soil mass; c, closing the water inlet valve, reducing the height of the external water tank, improving the centrifugal acceleration to solidifyand disperse the internal pore water pressure of the physical model; d, after the solidification is finished, opening the water inlet valve, raising the height of the external water tank to the corresponding height according to the preset water level height of an internal water tank; obtaining different infiltration capacity of the water to the slope when the water in the internal water tank seepsinto the soil layer and stays at different heights, and observing the wetting front change and the slope deformation condition of the physical model. The method disclosed by the invention has the advantages that the height of the groundwater level can be accurately adjusted in real time and washing of water current to the slope body is prevented; in the whole test process, high operability, highreliability and good test effect are realized.
Owner:CHENGDU UNIVERSITY OF TECHNOLOGY

Preparation method of pyrohydrolysis-resistant meta-position aramid fiber material

The invention relates to a preparation method of a pyrohydrolysis-resistant meta-position aramid fiber material. The preparation method is characterized in that: a meta-position aramid fiber three-layer structural body made by adopting a no-weaving technology is taken as a filter material green body, the meta-position aramid fiber three-layer structural body is subjected to padding by pyrodydrolysis-resistant finishing liquor which contains polytetrafluoroethylene and epoxy phenolic resin mainly and then is subjected to low temperature antimigrant primary drying and high temperature crosslinking, thus a membrane structure which is completely coated and is uniformly distributed with polytetrafluoroethylene particles, high temperature water vapor is isolated from contacting fibers, retention rate of longitudinal and transverse breaking forces of hydrolysis at higher continuous working temperature are 100-107%, water repellency level and oil repellency level are obviously improved, the filter material is difficult to damage, is easy to clean ash, does not paste bag and does not harden, differential pressure of a dust removal system is small, service life of a filter bag is prolonged, and the filter material can be widely applied to high temperature flue gas dedusting and filtering of steel and iron, electricity generation, cement, a coal-fired boiler and the like. The preparation method disclosed by the invention can directly use the traditional production equipment and has a simple process and low production cost.
Owner:江苏东方滤袋股份有限公司 +1

High-rate lithium ion battery, aging method and formation method

The invention provides a high-rate lithium ion battery, an aging method and a formation method. The effectiveness of pole piece high porosity is characterized in that holdings and wettability of a pole piece electrolyte can be improved, and a conductive agent is compounded to reduce the direct-current internal resistance of a battery; during an aging process, the battery is subjected to high-temperature preheating and softening firstly, then pre-pressing and pressure relief operation are carried out, the battery is shaped, and high-temperature aging can promote uniform infiltration of the electrolyte of a pole piece coating layer; a three-step hot-pressing forming system is adopted, wherein a process step of "high-temperature shelf aging-constant-current discharging-constant-current charging" is executed additionally after the constant-current charging in each step, so that the infiltration effect of the electrolyte can be further improved, and an SEI membrane has sufficient nucleation, growth and reforming time, and by virtue of the charging and discharging cycles, the formation of the SEI membrane on the surfaces of the negative electrode active material particles can be more complete. The lithium ion battery prepared by the method disclosed by the invention is suitable for the fields having relatively high requirements for battery power performance of an unmanned aerial vehicle, an electric tool, a starting and stopping power supply and the like.
Owner:郑州中科新兴产业技术研究院

Preparation method for polyphenylene sulfide fiber filter material resisting instant high-temperature oxidization

The invention relates to a preparation method for polyphenylene sulfide fiber filter material resisting instant high-temperature oxidization. The preparation method is characterized in that a three-layer polyphenylene sulfide fiber structure made by non-weaving technology is used as a filtering material blank, is in padding by instant high-temperature oxidization resistant finishing liquor mainlyconsisting of polytetrafluoroethylene emulsion and epoxy phenolic resin, and then is in low-temperature antimigrant preliminary drying and high-temperature crosslinking curing, so that a membrane structure uniformly distributed with polytetrafluoroethylene particles in a scattered manner is completely wrapped on the surfaces of fibers of the filtering material, oxygen is isolated from the fibers,breaking strength retention rate of the prepared filtering material at the high instant working temperature ranges from 98% to 110%, both water repellency grade and oil repellency grade are remarkably increased, the filtering material is not easy to be damaged, easy to clean and free of being caked, burning of a filtering bag is prevented, differential pressure of a dust removal system is low, the service life of the filtering bag is prolonged, and the filtering bag can be widely used for high-temperature smoke dust removal filtering for iron and steel, power generation, cement, coal-fired boilers and the like. In addition, existing production equipment can be directly used in the method, a process is simple, and production cost is low.
Owner:江苏东方滤袋股份有限公司 +1

Physical model for simulating soil slope instability induced by groundwater

InactiveCN108828188AUniform penetration rateAvoid scourEarth material testingInstabilityPore water pressure
The invention discloses a physical model for simulating soil slope instability induced by groundwater and belongs to the field of physical model tests. The physical model comprises a model case and ischaracterized by further comprising an external water tank and a lifter, wherein a base is fixedly arranged on the inner bottom wall of the model case; an impervious layer is fixedly arranged on thebase; a soil layer is arranged on the impervious layer; a pore-water pressure sensor, a soil pressure sensor and a differential displacement sensor are arranged in the soil layer; an internal water tank is arranged on one side of the base; water level scales are etched on one side wall of the internal water tank; a plurality of water seeping holes are formed in the other side wall of the internalwater tank; porous stones and geotechnical cloth are sequentially arranged between the water seeping holes and the soil layer; a stainless steel hose is connected to the internal water tank; a water flow sensor is fixedly arranged on the stainless steel flexible hose. According to the physical model disclosed by the invention, underground water level height can be accurately adjusted in real time;in addition, the infiltration capacity of a slope body at certain water level height can be maintained, scouring to a soil model can be effectively avoided, and a good test effect is realized.
Owner:CHENGDU UNIVERSITY OF TECHNOLOGY

Method for preparing three dimension stereo sandwiched carrier composite plate

The present invention discloses a manufacturing method for three-dimensional bearing composite plate with a core layer. First of all, a top panel inner layer and a lower panel inner layer are laid above and below the light weight core material respectively to for the pre-weaving body; and then, the top panel inner layer, the light weight core material and the lower panel inner layer are weaved together by a three-dimensional weaving technology to for the three-dimensional structure with a core layer; and a top panel outer layer and a lower panel outer layer are laid above the top panel inner layer and below the lower panel inner layer respectively to form the preformed body; finally, the phenolic resin is guided into the preformed body by a vacuum forming technology, wherein a vacuum degree of 0.05~0.09 MPa is kept, a curing process is executed for 0.5~5 hours at 20~200 DEG C; then the preformed body after curing is taken out and is subjected to grinding and trimming processing, thereby, the three-dimensional bearing composite plate with a core layer and a high fire retardance is obtained. The manufacturing method of the present invention can effectively solve the problem of that the general composite plate is easy to delaminate, has a poor bearing force; the metal composite plate is easy to be corrupted; and the resin based composite plate has a poor fire retardance. The composite plate with a core layer of the present invention is adapted to the application of high shear and high compression; thereby the application scope is enlarged.
Owner:BEIJING ZHONGTIE LONGDRAGON ADVANCED COMPOSITE MATERIAL

Method for preparing molybdenum-copper alloy blanks through continuous sintering

ActiveCN104308151ASolve technical problems that cannot be completed in the same sintering processContinuous high temperature pre-sinteringFurnace temperatureCopper alloy
The invention discloses a method for preparing molybdenum-copper alloy blanks through continuous sintering. The method includes the steps of firstly, placing copper blocks in the lower-section cavity of a sintering crucible die cavity; secondly, placing molybdenum compression blanks in the middle-section cavity of the sintering crucible die cavity; thirdly, vertically placing the sintering crucible with the copper blocks and the molybdenum compression blanks into a sintering furnace for sintering, naturally cooling, and removing copper covering the surfaces after discharging to obtain the molybdenum-copper alloy blanks. The method has the advantages that the principle that the molybdenum compression blanks shrink during high-temperature sintering is fully utilized, the internal structure and size of the sintering crucible die cavity are ingeniously designed according to the size variation quantity of the molybdenum compression blanks, the molybdenum compression blanks after the high-temperature sintering can smoothly slide into molten copper, then furnace temperature is controlled to be in a range suitable for infiltration, continuity of the high-temperature pre-sintering and the infiltration is achieved, production flow is shortened, energy is saved, and production efficiency is increased.
Owner:XIAN REFRA TUNGSTEN & MOLYBDENUM

Stampings bonding prevention device for stamping die

The invention discloses a stampings bonding prevention device for a stamping die and is suitable for punching of coiled materials. The stampings bonding prevention device for the stamp die comprises two rotary cylinders which are located on one side of the die, and the coiled materials go in from the side. The two rotary cylinders are tightly attached to each other and arranged up and down. Each rotary cylinder comprises an oil storage drum with two sealed ends and an oil impregnating layer which is arranged on the outer side of the oil storage cylinder. The oil impregnating layer has elasticity. A plurality of oil impregnating holes are uniformly formed in the circumferential surface of each oil storage cylinder. One ends of the oil storage cylinders are connected with a punching oil conveying system through pipelines. A damping layer with elasticity is arranged between each oil storage cylinder and each oil impregnating layer. A plurality of oil impregnating cylinders are uniformly arranged on the circumferential surface of each damping layer and embedded in each oil impregnating layer. Oil outlet holes which penetrate through the inner surface of each damping layer are formed in each oil impregnating cylinder. Kerfs which are communicated with the oil outlet holes are uniformly arranged on the circumferential surface of each oil impregnating cylinder. The stampings bonding prevention device for the stamp die can prevent stampings from bonding with the die, and therefore continuous punching can be achieved, and influence of machine halt on production efficiency is avoided. Besides, the stampings bonding prevention device for the stamp die is beneficial for prolonging service life of the die and improving punching quality of products.
Owner:WANXIANG 123 CO LTD

Method for preparing pyrohydrolysis resisting polyimide fiber filter material

The invention relates to a method for preparing a pyrohydrolysis resisting polyimide fiber filter material. The method is characterized by comprising the following steps of: padding a polyimide fiber three-layer structural body which is prepared by a non-weaving technology and serves as a filter material blank by using pyrohydrolysis resisting finishing liquor which is mainly prepared from polytetrafluoroethylene emulsion and epoxy phenolic resin; performing low-temperature migration prevention preliminary drying and high-temperature cross-linking baking to ensure that a membrane structure of polytetrafluoroethylene particles which are completely coated and uniformly dispersed is formed on the surface of a filter material fiber; and isolating high-temperature water vapor from being contacted with the fiber to obtain the filter material. The prepared filter material has the longitudinal and horizontal breaking strength retention rate of 100 percent to 111 percent when hydrolysed at a high continuous working temperature, a water repellency level and an oil repellency level are remarkably improved, and the filer material is difficult to damage, makes dust easily removed, cannot be adhered to a bag and cannot be hardened; a dust removal system is low in differential pressure, so that the service life of a filter bag is prolonged; and the method can be widely applied to dust removal and filtering of high-temperature flue gas generated by iron and steel, power generation, cement, waste incineration, coal burning boilers and the like, can be directly used for the conventional production equipment, has a simple process and is low in production cost.
Owner:江苏东方滤袋股份有限公司 +1

Processing method for improving durability of birch

The invention mainly relates to the technical field of wood products processing, and discloses a processing method for improving the durability of birch. The processing method includes the steps of cutting, soaking, freezing, strengthening and drying; the method is simple, the strength and rigidity of the birch after being processed are improved obviously, the use range of the birch is increased,and the economic income is increased by 18.6%; birch sections are peeled and then cut, and later even processing is facilitated; the processing efficiency is improved; wood beams are placed in a preservative liquid for being soaked at high temperature, the preservative liquid is promoted to be infiltrated into the wood beams, residual bacteria and worm eggs in the wood beams are killed, mildew andmoth are avoided, and the anti-corrosion performance of the wood beams is improved; the preservative liquid is extracted from pure Chinese herbs and without any poisonous reagent, and the fact that human health is harmed in the processing and using process of the birch is avoided; after being soaked, freezing is conducted through gradually reducing the temperature, water is changed into crystalline water, the porosity between fiber of the birch is increased, the flexibility of the birch is improved, then low-temperature drying is conducted, absorption of the wood beams to a processing liquidis facilitated.
Owner:阜南佳利工艺品股份有限公司

Preparation method of lithium metal negative electrode based on lithium-philic three-dimensional carbon-based current collector

The invention belongs to the technical field of lithium metal batteries, and discloses a preparation method of a lithium metal negative electrode of a lithium-philic three-dimensional carbon-based current collector. The preparation method comprises the following steps of: firstly, self-assembling a one-dimensional nano material and an organic material to obtain a three-dimensional precursor framework material; secondly, carrying out high-temperature carbonization treatment on the three-dimensional precursor framework material to prepare the lithium-philic three-dimensional carbon-based current collector with good wettability on liquid metal lithium; and heating metal lithium to 180-500 DEG C to obtain liquid metal lithium, mixing the liquid metal lithium with the lithium-philic three-dimensional carbon-based current collector, and after the liquid metal lithium is fully infiltrated, naturally cooling the to prepare the composite lithium metal negative electrode. Compared with a lithium sheet negative electrode, the composite lithium metal negative electrode prepared by the invention can greatly inhibit the growth of lithium dendrites, alleviate the volume expansion effect of the lithium negative electrode in the deposition / stripping process, and realize long-life and high-stability circulation of lithium metal.
Owner:BEIHANG UNIV

One-step forming device for long glass fiber reinforced thermoplastic plastic plate

The invention discloses a one-step forming device for a long glass fiber reinforced thermoplastic plastic plate based on double-cascade twin-screw extrusion. The one-step forming device comprises the following parts: a first-cascade co-rotating twin-screw extruder 1, a second-cascade counter-rotating twin-screw extruder 2, a glass fiber surface processor 3, a clothes-hanger-type mould head 4, a three-roll calendar 5, a setting machine 6 and a cutting machine 7, wherein thermoplastic plastic, auxiliaries and fillers are fed to the first-cascade co-rotating twin-screw extruder 1; the mixture is fed to the second-cascade counter-rotating twin-screw extruder 2 after being blended and pre-plasticized by the first-cascade co-rotating twin-screw extruder 1, introduced to the second-cascade counter-rotating twin-screw extruder after being treated by the glass fiber surface processor 3, uniformly mixed with resin so as to be further plasticized, and finally packaged through the three-roller calendar 5, the sizing machine 6 and the cutting machine 7 after being extruded by the clothes-hanger type mould head 4. The glass fiber reinforced thermoplastic plastic plate acquired through the device disclosed by the invention has the advantages that the glass fiber length distribution is rational; the glass fiber beam is completely loosened; and the resin is uniformly permeated.
Owner:宣城福美达新材料有限公司 +1

Novel cylindrical full-tab battery structure and assembling and welding process thereof

The novel cylindrical full-tab battery structure comprises a steel shell, a positive pole end cover, a positive pole collector plate, a negative pole end cover, a negative pole collector plate and a roll core, the roll core is arranged in the steel shell, the positive pole end cover is conducted with the positive pole end of the roll core through the positive pole collector plate, the lower end of the steel shell is open, and the negative pole end of the roll core is fixedly connected with the negative pole collector plate. The outer side face of the lower end of the steel shell is sleeved with the negative end cover, the upper end of the negative end cover is fixedly connected with the steel shell, and a liquid injection hole coaxial with a center hole of the roll core is formed in the middle of the negative end cover; and a liquid injection plug is arranged in the liquid injection hole for sealing. By changing the structures of the negative electrode end cover, the negative electrode collector plate and the steel shell, the negative electrode end cover and the steel shell as well as the steel shell and the negative electrode collector plate adopt a splicing continuous laser welding mode, so that the welding difficulty is reduced, pseudo soldering is prevented, and the product yield is improved.
Owner:FIRST NEW ENERGY GRP CO LTD

Wall painting equipment for home decoration and operation method

ActiveCN109594751AImprove the effect of paintingImprove convenienceBuilding constructionsFixed frameEngineering
The invention relates to the technical field of wall painting and discloses wall painting equipment for home decoration and an operation method. The wall painting equipment comprises a base, wherein aliquid storage tank is fixedly mounted at the top of the base, a fixed frame is fixedly mounted at the top of the base, the outer surface of the liquid storage tank is clamped with the fixed frame, asupport is fixedly mounted at the top of the base, a pull handle is fixedly connected with one side, away from the liquid storage tank, of the support, and a shaft seat is fixedly connected with thetop of one side, close to the liquid storage tank, of the support. According to the wall painting equipment for home decoration and the operation method, an infusion pipe is arranged and opened, paintis poured into the liquid storage tank along the inner side wall of the infusion pipe, the handle is held, a connecting rod is pushed to enable a push plate to downwards extrude the paint, the paintflows to an inner cavity of a liquid discharge barrel along an infusion capillary and the infusion pipe, and the problems that a brush of an existing wall painting device needs to dip paint continuously and repeatedly after the dipped paint is used up, home decoration use is not facilitated and the painting efficiency is reduced are effectively solved.
Owner:嘉兴沃瑞科技有限公司
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