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35results about How to "Does not affect water permeability" patented technology
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Stone texture imitating permeable concrete prefabricated brick and preparation method thereof
InactiveCN103981783ASolve industrial production problemsQuality improvementSingle unit pavingsCeramic shaping apparatusBrickCrushed stone
The invention discloses a stone texture imitating permeable concrete prefabricated brick. The stone texture imitating permeable concrete prefabricated brick consists of two parts of a permeable main body layer and a stone texture imitating permeable surface layer from bottom to top, wherein the permeable main body layer is made from the following raw materials, in mixing proportion by weight of concrete per cubic meter: (a) macadams which are used as aggregates, with the addition amount of 1400kg / m<3>~1550kg / m<3>; (b) 310kg / m<3>~350kg / m<3> of cement; (c) 3.0kg / m<3>~3.5kg / m<3> of water reducing agents; (d) 25kg / m<3>~35kg / m<3> of fly ash. The stone texture imitating permeable concrete prefabricated brick provided by the invention has a permeable function, and at the same time, the surface of the stone texture imitating permeable concrete prefabricated brick has a decoration effect similar to that of natural stones; the stone texture imitating permeable concrete prefabricated brick integrates with environment, and the natural quality of cities is enhanced, so that the relationship between human beings and nature is closer. Moreover, the design of an optimized mixing proportion ensures the water permeability, the wear resistance and the physical mechanics index of the stone texture imitating permeable concrete prefabricated brick.
Owner:CHINA STATE CONSTRUCTION ENGINEERING CORPORATION +1
Ecological self-cleaning clog-proof water permeable brick based on construction waste and preparing method thereof
InactiveCN106431351ATake advantage ofAvoid secondary pollutionLaminationLamination apparatusFiberBrick
The invention provides an ecological self-cleaning clog-proof water permeable brick based on construction waste and a preparing method thereof. The method comprises the following steps of adding water into city sludge, brick slag and concrete, stirring until the aggregate is fully damp, then adding cement, a water reducing agent and a polymer fiber, stirring, then adding a high-molecular polymer and water, stirring until the surface of the mixture is bright, and pressing to form a water permeable base layer; fully mixing nanometer titania and the high-molecular polymer with water, then adding water into slag, steel slag, the brick slag and concrete slag, stirring until the aggregate is fully damp, then adding the two mixtures into the cement and the water reducing agent, mixing, placing the mixtures on the surface of the water permeable base layer, conducting vibration and extrusion molding, and finally after a water permeable surface layer and water permeable base layer composite brick are fully dried, obtaining ecological self-clean clog-proof water permeable brick based on the construction waste by high temperature stoving.
Owner:DONGGUAN LIANZHOU INTPROP OPERATION MANAGEMENT CO LTD
Degradable composite water-preserving agent for greenhouse planting and preparation method of degradable composite water-preserving agent
InactiveCN106635036AExcellent moisture control functionDoes not affect breathabilityAgriculture tools and machinesOrganic fertilisersPotassium persulfatePolyvinyl alcohol
The invention discloses a degradable composite water-preserving agent for greenhouse planting. The degradable composite water-preserving agent is prepared from the following raw materials in parts by weight: 50 to 55 parts of crop straws, 40 to 55 parts of urea, 18 to 20 parts of ammonium dihydrogen phosphate, 22 to 25 parts of potassium persulfate, 10 to 15 parts of potassium sulfate, 16 to 18 parts of potassium chloride, 24 to 36 parts of acrylic acid, 50 to 80 parts of carboxymethyl cellulose, 6 to 10 parts of N,N-methylene bisacrylamide, 9 to 12 parts of polyvinyl alcohol, 30 to 50 parts of humic acid and 70 to 100 parts of acrylamide. The water-preserving agent disclosed by the invention has an excellent water regulating and controlling function; the degradable composite water-preserving agent can continuously supply water for a greenhouse to plant and grow; after the water-preserving agent absorbs water, the water-preserving agent becomes irregular gel particles; after the water-preserving agent is blended with dry material, the air permeability, the water permeability and the structural stability of a culture material are not affected; the problem that water replenishment is difficult at the later stage of greenhouse planting is solved; the water-preserving capability of the culture material is improved, and the yield of greenhouse planting is increased; meanwhile, the water-preserving agent disclosed by the invention has degradability, no pollution to the environment and better popularization value.
Owner:潜山县思迈农业科技有限公司
High-strength pervious concrete and preparation method thereof
ActiveCN113354361ALarge specific surface areaIncrease the number of crystalsSolid waste managementFiberRaw material
The invention relates to the field of building materials, and particularly discloses high-strength pervious concrete and a preparation method thereof. The high-strength pervious concrete comprises the following components in parts by weight: 200 to 240 parts of cement, 1300 to 1600 parts of coarse aggregate, 70 to 110 parts of mineral powder, 50 to 70 parts of fly ash, 8.5 to 25.2 parts of an additive, 100 to 125 parts of water, 5 to 10 parts of toughening fibers and 10 to 20 parts of a reinforcing agent; and each part by weight of the reinforcing agent is prepared from the following raw materials in parts by weight: 5-6 parts of aluminum oxide, 1-1.25 parts of nano titanium dioxide and 2-2.5 parts of boron carbide. The high-strength pervious concrete has the advantages of being large in pervious coefficient, high in compressive strength and breaking strength and high in heat resistance.
Owner:北京民佳混凝土有限公司
Photocatalytic nanometer spray coating and method for preparing same
ActiveCN106189861AWide variety of sourcesDoes not affect skid resistanceBituminous coatingsSilanesSpray coating
The invention discloses photocatalytic nanometer spray coating and a method for preparing the same, and belongs to the technical field of photocatalytic coating. The photocatalytic nanometer spray coating comprises, by weight, 48.5%-49.5% of asphalt, 50%-51% of liquid soap and 0.5%-1% of silane coupling agents. The sum of the mass percents of the asphalt, the liquid soap and the silane coupling agents is a hundred percent; the liquid soap comprises, by weight, 0.4%-2% of stabilizers, 3%-6% of emulsifiers, 2%-6% of dispersing agents, 10%-20% of nanometer TiO2 and the balance high-purity water, and the sum of the mass percents of various components of the liquid soap is a hundred percent; the mass of the dispersing agents accounts for 20%-30% of that of the nanometer TiO2. The photocatalytic nanometer spray coating and the method have the advantage that problems that road spray coating is poor in storage stability, colors of the road spray coating are greatly different from colors of asphalt pavements, the antislip and permeability performance of the pavements are deteriorated and the driving safety is affected in the prior art can be solved by the aid of the photocatalytic nanometer spray coating and the method.
Owner:GUANGDONG PROVINCIAL CHANGDA HIGHWAY ENG +1
Device for preventing water outlet of biochemical tank from being blocked by MBBR (Moving Bed Biofilm Reactor) filling
ActiveCN106430557AAvoid cloggingAvoid affecting MBBR feeding phenomenonSustainable biological treatmentBiological water/sewage treatmentMoving bed biofilm reactorBiochemical engineering
The invention provides a device for preventing a water outlet of a biochemical tank from being blocked by MBBR (Moving Bed Biofilm Reactor) filling. The device comprises a U-shaped water outlet screen mesh arranged at the front part of the water outlet; mesh holes of the water outlet screen mesh are rhombuses with inner angles of 120 degrees and 60 degrees respectively; the edge length of each rhombus is calculated according to the size of the MBBR filling; a rear side of the screen mesh is clung to the inner side of the tank wall, which is provided with the water outlet, of the biochemical tank and covers the water outlet; the upper edge of a front side of the screen mesh is higher than the water level of the biochemical tank; a water outlet aeration pipe, which is connected with an air source through an air conveying pipe and a valve, is arranged on the bottom surface of the screen mesh; a material stopping plate is arranged on the tank wall, above the water outlet hole, of the biochemical tank, the material stopping plate is bent towards to the inner side of the tank and an upper edge of the material stopping plate is higher than the upper edge of the front side of the screen mesh; an assisted aeration pipe, corresponding to the water outlet screen mesh, is arranged at an end part, close to the tank wall, which is provided with the water outlet, of the biochemical tank, on the bottom surface of the biochemical tank. By utilizing the device provided by the invention, the water outlet of the biochemical tank can be effectively prevented from being blocked by the MBBR filling, and phenomena that the operation of equipment is influenced and the MBBR filling is lost due to sewage overflowing caused by the fact that the water outlet is blocked by the MBBR filling are avoided.
Owner:SHENYANG JIANZHU UNIVERSITY
Water-permeable coating, and preparation method and application thereof
InactiveCN111138942ALow viscosityImprove the level ofPaving gutters/kerbsEpoxy resin coatingsRoad surfaceChemistry
The invention provides a water-permeable coating, and a preparation method and an application thereof. The water-permeable coating comprises modified resin and a modified curing agent, wherein the mass ratio of the modified resin to the modified curing agent is 1: (0.1-0.6); the modified curing agent comprises a curing agent and an auxiliary agent in a mass ratio of 1: (0.05-0.3); and the modifiedresin comprises resin and a diluent in a mass ratio of 1: (0.05-0.3). The coating prepared by taking the modified resin and the modified curing agent as raw materials has water permeability and low viscosity; when the water-permeable coating is sprayed onto a water-permeable pavement for repairing, pores of the water-permeable pavement cannot be blocked, that is, the water permeability of the water-permeable pavement cannot be affected; meanwhile, the water-permeable coating is low in viscosity and good in flowability, can form a horizontal spraying layer on the water-permeable pavement, realizes repairing of the water-permeable pavement, and is simple, convenient, quick and effective; and by limiting of the mass ratio of the modified resin to the modified curing agent, the curing time ofthe prepared coating can be prolonged, and the operability of the coating in the spraying process is improved.
Owner:RENCHSAND ECO ENVIRONMENT PROTECTION SCI & TECH CO LTD
Drip tape
ActiveCN103782871AExtended service lifeReduce cloggingWatering devicesCultivating equipmentsDrip tapeEngineering
The invention discloses a drip tape comprising an upper tape and a lower tape. The lower tape is provided with water pressure reducers. A filter is disposed between the upper tape and the lower tape, so that irrigation water which is filtered before entering the drip tape is filtered again by the filter before entering the water pressure reducers, and the irrigation water which is filtered again can drop from the water pressure reducers. A filter layer is added to the drip tape, so that before the irrigation water enters the water pressure reducers of the drip tape, various particles such as sand in the irrigation water can be further filtered, chances of pores of the pressure reducers being blocked are slimmed, the service life of the drip tape is prolonged and service efficiency is improved.
Owner:SHANGHAI JIAO TONG UNIV
Water transfer printing backing paper having single-surface anti-adhesion characteristic and preparation method of water transfer printing backing paper
The invention discloses a water transfer printing backing paper having the single-surface anti-adhesion characteristic and a preparation method of the water transfer printing backing paper. An anti-adhesion layer which is made of one or several of a silicone oil substance, a wax substance and a fluororesin substance is formed on the nonprinting surface of the water transfer printing backing paper, when water transfer printing decalcomania paper is stacked, the anti-adhesion layer and a flexible coating film of the water transfer printing decalcomania paper are directly contacted and can not be bonded together; in addition, the anti-adhesion layer neither affect the water permeability and the repasting property of the water transfer printing decalcomania paper, nor affect the printing effect of the printing surface.
Owner:HORIZON SPECIALTY MATERIAL
Nursery stock planting device for ecological remediation
InactiveCN110506535AGood for taking rootImprove water retentionSelf-acting watering devicesContaminated soil reclamationSoil remediationEngineering
The invention discloses a nursery stock planting device for ecological remediation and belongs to the technical field of ecological remediation. The device solves the problems that newly planted nursery stocks have a low survival rate and cannot adapt to ecological remediation of soil or water areas. The device is technically characterized by comprising a planting box, a grid frame and a root fixing and water locking frame, wherein planting grooves are formed in the planting box, the grid frame is connected with the bottom of the planting box, a palm piece is laid on the grid frame, and the root fixing and water locking frame is arranged at the portion, above the palm piece, of the interior of the planting box; planting grooves in the root fixing and water locking frame are filled with a nutrient matrix layer, an original soil layer is laid on the upper layer in the root fixing and water locking frame, and a nursery stock is planted in the original soil layer. By arranging the grid frame at the bottom of the planting box and laying the palm piece, the bearing capacity is improved, and meanwhile, the water permeability and growth of the root system of the nursery stock are not influenced. In addition, the root fixing and water locking frame and the nutrient matrix layer are arranged, so that root fixation and water-preserved growth of the nursery stock are facilitated; the device can be used for not only soil remediation but also ecological remediation of water areas and is high in adaptability.
Owner:GUANGZHOU INST OF GEOGRAPHY GUANGDONG ACAD OF SCI
Self-water permeable anti-surface water accumulation highway concrete
Belonging to the field of concrete, the invention discloses a self-water permeable anti-surface water accumulation highway concrete. The making method comprises the steps of: firstly letting the staffwash, dry and cut a high-fiber plant raw material, then performing soaking in a diammonium hydrogen phosphate solution for pretreatment, and then putting the product in a high-temperature calcining furnace, and using water vapor for carbonization to increase the pore size and number of micropores on the high-fiber plant raw material, then adding porous stone and hydrosol, mixing the substances evenly to form a plant fiber water permeable mixture, and then mixing the plant fiber water permeable mixture with coarse aggregate water permeable concrete evenly by a mixer, thus obtaining the water permeable concrete capable of guiding water through the carbonized plant fiber and porous stone. The method realizes improvement of water permeability of coarse aggregate water permeable concrete, enables the coarse aggregate water permeable concrete to guide water flowing down from colored strong water permeable concrete to a next layer rapidly, the water permeability rate of concrete can be increased, and water does not accumulate on the surface of concrete easily.
Owner:沈阳炳恒科技有限公司
Net cage with feed collecting structure and method
InactiveCN109566507AAvoid wastingEasy to eat againClimate change adaptationPisciculture and aquariaEngineeringUtilization rate
The invention discloses a net cage with a feed collecting structure and a method. The net cage comprises a net rack, a cylindrical main net, a fixing plate, an upright column, a net folding mechanismand a mesh storage mechanism, wherein the main net is arranged on the net rack and provided with an upper opening; the fixing plate is arranged in a soil layer below the bottom face of the main net, the upright column is arranged on the fixing plate and penetrates through the bottom face of the main net, the net folding mechanism is arranged on the upper portion of the upright column, and the meshstorage mechanism is arranged on the lower portion of the upright column. An air cylinder is arranged on the upper portion of the upright column, and a telescopic rod of the air cylinder is connectedwith the net folding mechanism. The net cage further comprises a cylindrical auxiliary net located in the main net, the mesh size of the auxiliary net is smaller than that of feed particles, and M sector-shaped meshes are arranged in the mesh storage mechanism. The net cage has the advantage that waste of the feed particles is effectively avoided, it is ensured that the feed particles are kept clean and sanitary, and the utilization rate of feed is effectively increased.
Owner:刘清娥
A special reinforcing agent for ready-mixed permeable concrete and its preparation method
ActiveCN108751784BPrevent shrinkage fractureReduce stress crackingStructural engineeringPervious concrete
The invention provides a special reinforcing agent for ready-mixed pervious concrete and a preparation method thereof. The special reinforcing agent for the ready-mixed pervious concrete includes thefollowing raw materials by mass: 40-45% of anti-cracking component, 20-25% of flexural component, 2%-4% of thickening component, 19-24% of adhesive component and 10-15% of water reduction component. The dosage of the special reinforcing agent in the pervious concrete is 2-3% of the mass of a cementing material. The reinforcing agent can not only effectively prevent the late shrinkage of the pervious concrete and reduce the stress cracking, but also significantly improve the flexural resistance and the frost resistance of the pervious concrete, ensures the mechanical property and the durabilityof pervious concrete pavements, and enhances the water retention and the slump retention of the previous concrete to meet the construction requirements of the ready-mixed concrete. The reinforcing agent is beneficial to prepare the premixed medium and high strength pervious concrete.
Owner:WUHAN YUANJIN BUILDING MATERIALS TECH CO LTD
Manufacturing method of sponge water permeable brick with graphic marble
InactiveCN108298950AImprove appearanceHigh hardnessCeramic materials productionClaywaresCeramic glazeCorrosion
The invention discloses a manufacturing method of a sponge water permeable brick with graphic marble. The method comprises the steps of preprocessing raw materials, pressing and forming, drying, coating a blank and dedusting, coating with protecting glaze, and sintering and forming to obtain the sponge water permeable brick with the graphic marble. According to the method, a layer of protecting glaze is coated on the surface of the sponge water permeable brick, so that the glaze effect of the graphic marble is obtained by improving the glaze coating manner, the appearance of an existing spongewater permeable brick is improved, and the sponge water permeable brick with the graphic marble is obtained, and moreover, the protecting glaze on the surface of the sponge water permeable brick is high in hardness, high in corrosion durability relative to the blank.
Owner:佛山生态海绵城市科技发展有限公司
Three-dimensional structure of sidewalk and its construction method
ActiveCN107476168BEasy to installAdd supportPaving gutters/kerbsSidewalk pavingsFixed frameWater layer
Owner:浙江中良市政工程有限公司
Self-migration type surface hydrophilic finishing agent as well as preparation method and application thereof
ActiveCN111777920AImprove hydrophobicityLow viscositySingle unit pavingsPaving gutters/kerbsPolymer scienceActive agent
The invention provides a self-migration type surface hydrophilic finishing agent as well as a preparation method and application thereof. According to the finishing agent, a finishing agent matrix composed of a hydrophobic epoxy resin composition and a hydrophilic curing agent composition is utilized; the hydrophobicity in the system is gradually increased in the reaction curing process of the resin composition and the curing agent; a water-oil amphiphilic surfactant is introduced into the finishing agent, the HLB value of the finishing agent ranges from 7 to 9, the finishing agent can be compatible with resin and a part of water, viscosity can be effectively reduced in the system, atomization spraying is facilitated, and meanwhile certain hydrophilicity is provided for the system. Meanwhile, a high-hydrophilicity surfactant is introduced, the compatibility of the high-hydrophilicity surfactant and the matrix becomes poor and begins to migrate to the surface along with gradual increaseof hydrophobicity in the system in the curing process, and due to the fact that the compatibility is poor, migration is fast, more high-hydrophilicity surfactant is enriched in the surface area of the finishing agent, excellent hydrophilicity is provided for the surface.
Owner:武汉开思新材料有限公司
drip tape
ActiveCN103782871BExtended service lifeReduce cloggingWatering devicesCultivating equipmentsDrip irrigationPore water pressure
Owner:SHANGHAI JIAOTONG UNIV
High degree of cleanliness breeding net cage and method
ActiveCN109588352BDoes not affect water permeabilityIncrease profitClimate change adaptationHollow article cleaningEutrophicationStructural engineering
Owner:山东滨州恒迈尼龙化纤制品有限公司
Terrestrial heat utilization system based on underground diaphragm walls and utilization method thereof
PendingCN112050488AEasy constructionDoes not occupy other spaceGeothermal energy generationCollector with underground water as fluidHigh pressure waterMechanical engineering
The invention provides a terrestrial heat utilization system based on underground diaphragm walls. The system comprises the first underground diaphragm wall, the second underground diaphragm wall andan underground water layer. A water input pipe and a first water output pipe are arranged on the first underground diaphragm wall. A second water output pipe and a third water output pipe are arrangedon the second underground diaphragm wall. The underground water layer communicates with a high-pressure water pump through the water input pipe. The water output end of the high-pressure water pump is sequentially connected with a first electric shunting type valve, a first high-pressure heat energy converter, a second electric shunting type valve, a second high-pressure heat energy converter andthe third water output pipe. The other water output end of the first electric shunting type valve is connected with the first water output pipe through a first grid type heat exchanger, and the otherwater output end of the second electric shunting type valve is connected with the second water output pipe through a second grid type heat exchanger. The invention further provides a utilization method of the geothermal utilization system based on the underground diaphragm walls. The system has the advantages of being large in energy, easy to utilize and the like, terrestrial heat is utilized reasonably, and thus benefits can be brought to economy and environment.
Owner:ZHEJIANG UNIV OF TECH
Tree pit grate module and modularly-assembled tree pit grate and trunk support system
InactiveCN105766499ADoes not affect breathabilityDoes not affect water permeabilityCultivating equipmentsPlant protective coveringsSupporting systemFiltration
The invention relates to a tree pit grate module. The tree pit grate module is in a square structure, and comprises a water filtration bearing plate and a support plate. The support plate resides on the edge of a lower surface of the water filtration bearing plate; an upper surface of the water filtration bearing plate is provided with water slots, each of four corners of the upper surface of the water filtration bearing plate is provided with a circular support sleeve mounting hole, the sides of the support plate are provided with receiving grooves, and the upper surface of the water filtration bearing plate is provided with counter bores in communication with the receiving grooves and corresponding to the receiving grooves in position. A modularly-assembled tree pit grate and trunk support system using the above-mentioned tree pit grate module comprises a tree pit grate system and a trunk support assembly; the tree pit grate system is laid in a tree pit according to the shape of the tree pit; the trunk support assembly is connected between the tree pit grate system and a trunk; the above-mentioned technical scheme realizes high speed and convenience, the tree pit grate module is more convenient to mount and is more firmly connected than traditional wood piles, and the tree pit grate module is reusable so that resource waste is reduced and cost is reduced; after being assembled, the tree pit grate module has no influence on air permeability and water seepage of the tree pit and has an attractive overall appearance and a high safety coefficient.
Owner:王学军
Energy-saving ecological farm field irrigation drainage channel
ActiveCN100473785CPromote growthAvoid enteringConstructionsIrrigation ditchesEcological environmentCrop
Owner:嘉兴五丰生态环境科技股份有限公司
Breeding device and method with high feed utilization rate
ActiveCN109566505BAvoid wastingEasy to eat againClimate change adaptationPisciculture and aquariaAnimal scienceZoology
Owner:郭毅
A water transfer bottom paper with single-sided anti-blocking properties and preparation method thereof
ActiveCN107351562BDoes not affect the printing effectDoes not affect water permeabilityThermographyWaxPulp and paper industry
The invention discloses a water transfer printing backing paper having the single-surface anti-adhesion characteristic and a preparation method of the water transfer printing backing paper. An anti-adhesion layer which is made of one or several of a silicone oil substance, a wax substance and a fluororesin substance is formed on the nonprinting surface of the water transfer printing backing paper, when water transfer printing decalcomania paper is stacked, the anti-adhesion layer and a flexible coating film of the water transfer printing decalcomania paper are directly contacted and can not be bonded together; in addition, the anti-adhesion layer neither affect the water permeability and the repasting property of the water transfer printing decalcomania paper, nor affect the printing effect of the printing surface.
Owner:HORIZON SPECIALTY MATERIAL
Concrete sand-containing water permeable brick core layer and preparation method
The invention provides a concrete sand-containing water permeable brick core layer and a preparation method. The concrete sand-containing water permeable brick core layer comprisesis prepared from cement, gravels with the weight being 4 to 8 times of the cement, and sand which accounts for 8 to 15 percent of the gravels, wherein the mark number of the cement is 42.5 to 52.5. By adopting the number-No.42.5 to 52.5 cement with high mark number and high strength serving as a cementing material, and adjusting the mixing amount to an invalid channel quantity of the cement and gravels, not only canthe water permeability of the sand-containing water permeable brick core layer not be influenced, but also the compactness of the basic layer can be improved, the looseness can be reduced, and the strength of the concrete sand-containing water permeable brick core layer can be greatly improved.
Owner:连云港东浦建筑工业化发展有限公司
Three-dimensional interwoven composite bottom fabric and papermaking felt
PendingCN110144750AImprove the ability to withstand high line voltageHigh resistance to high line voltageLayered productsPaper articlesHigh resistancePapermaking
The invention discloses a three-dimensional interwoven composite bottom fabric and a papermaking felt. The bottom fabric comprises at least two base fabrics which are stacked up and down, an includedangle between wefts of the adjacent two base fabrics is 2-15 DEG; and the papermaking felt comprises the three-dimensional interwoven composite bottom fabric and a plurality of fiber layers located atthe upper side and the lower side of the bottom fabric. Warps and wefts of the base fabrics in the three-dimensional interwoven composite bottom fabric are not overlapped after being sewed, a certainincluded angle exists between the warps and wefts of the adjacent base fabrics, and compressed marks do not exist in the use process, so the high line pressure resistance is greatly improved, and thewater permeability is not affected by long-term use. The papermaking felt of the invention has a high resistance to the high line pressure, a high speed increase and a low steam consumption, is suitable for high-rod diameter blind hole pressing, shoe pressing and other pressing forms of medium and high speed paper machines, and is used for making various culture papers, corrugated base papers, high-grade fine dried noodle wrapping paper, paperboards and other types of paper.
Owner:河南省双龙网毯有限公司
Cage provided with feed collection structure and method
InactiveCN109566507BAvoid wastingEasy to eat againClimate change adaptationPisciculture and aquariaAgricultural scienceAgricultural engineering
The invention discloses a net cage with a feed collection structure and a method thereof, comprising a net frame, a cylindrical main net arranged on the net frame with an open upper end, and a fixed plate arranged in the soil layer below the bottom surface of the main net , the column that passes through the bottom of the main net on the fixed plate, the net collection mechanism that is located on the upper part of the column, and the mesh storage mechanism that is located on the lower part of the column; the upper part of the column is provided with a cylinder, and the telescopic rod of the cylinder is connected with the net collection mechanism ; It also includes a cylindrical auxiliary net located in the main net, the mesh size of the auxiliary net is smaller than the size of the feed particles, and M fan-shaped nets are arranged in the net sheet storage mechanism. The invention has the characteristics of effectively avoiding the waste of feed particles, ensuring that the feed particles are kept in a clean and hygienic state, and effectively improving the utilization rate of the feed.
Owner:刘清娥
Well completion process improvement method suitable for water-saturated thick silty-fine sand layer
InactiveCN112196493ADoes not affect water permeabilityImprove economyConstructionsDrilling compositionCelluloseSlurry
The invention belongs to the technical field of special stratum well drilling and pile drilling construction processes, and particularly relates to a well completion process improvement method suitable for a water-saturated thick silty-fine sand layer. The well completion process improvement method comprises improvement of a well drilling mode, a drill bit structure of a circulating drill and chemical wall protection mud. The improvement of the well drilling mode comprises the steps that positive circulation and reverse circulation are combined for operation, that is, a positive circulation drilling machine is adopted for operation when upper-layer geology is drilled, and when the circulating drill bit of the drilling machine enters the silty-fine sand layer, a reverse circulation drillingmachine is used for operation; the improvement of the drill bit structure of the circulating drill is that the upper end of a fixing ring at the top of the drill bit is connected with a wall-protecting steel pipe consistent with the drill bit in outer diameter; and the chemical wall protection mud comprises corn starch, cellulose, sodium carbonate, polyacrylamide and a proper amount of water. Under the combined action of the three modes, the effects that the wall protection of a well wall is good, stable and free of collapse under special geological conditions, the wall protection mud is water-soluble after being over-aged, normal pore-forming wall protection is guaranteed, and the water permeability of a dewatering well is not affected are achieved.
Owner:POWERCHINA MUNICIPAL CONSTR GRP CO LTD
Environment-friendly road and method for preparing environment-friendly road paving blocks
The invention relates to the technical field of construction waste utilization and in particular to an environment-friendly road and a method for preparing environment-friendly road paving blocks. Theenvironment-friendly road comprises a water-permeable layer disposed on a foundation and a sand layer disposed on the water-permeable layer, wherein the water-permeable layer is formed by splicing paving blocks; the adjacent paving blocks are bonded by an adhesive; each paving block comprises a bottom pouring layer, a middle reinforcing layer formed by weaving steel bars and a top pouring layer;hollow water-permeable tubes pass through the paving blocks; and each paving block contains over 40% by weight of construction waste. The paving blocks are mainly used for paving roads in parks or forests, can use more construction waste under the premise of ensuring a required strength, is environmentally friendly, and has a good water-permeable effect.
Owner:深圳市图益环保科技有限公司
A kind of high-strength permeable concrete and preparation method thereof
ActiveCN113354361BLarge specific surface areaIncrease the number of crystalsSolid waste managementFiberRaw material
The application relates to the field of building materials, and specifically discloses a high-strength permeable concrete and a preparation method thereof. High-strength permeable concrete includes the following components by weight: 200-240 parts of cement, 1300-1600 parts of coarse aggregate, 70-110 parts of mineral powder, 50-70 parts of fly ash, 8.5-25.2 parts of admixture, and 100-parts of water 125 parts, 5-10 parts of toughening fiber, 10-20 parts of reinforcing agent; The reinforcing agent described in every part by weight is made of raw materials comprising the following parts by weight: 5-6 parts of aluminum oxide, 1-1.25 parts of nano-titanium dioxide and 2 ‑2.5 parts of boron carbide; the high-strength permeable concrete of the present application has the advantages of large water permeability coefficient, high compressive strength and flexural strength, and strong heat resistance.
Owner:北京民佳混凝土有限公司
Breeding device and method high in feed utilization rate
ActiveCN109566505ADoes not affect water permeabilityEnsure a clean and hygienic stateClimate change adaptationPisciculture and aquariaEngineeringUtilization rate
The invention discloses a breeding device and method high in feed utilization rate. The breeding device comprises a net rack, a cylindrical main net, a fixing plate, an upright column, an upper net folding mechanism and a lower net folding mechanism, wherein the main net is arranged on the net rack and provided with an upper opening; the fixing plate is arranged in a soil layer below the bottom face of the main net; the upright column is arranged on the fixing plate and penetrates through the bottom face of the main net; the upper net folding mechanism and the lower net folding mechanism are arranged on the lower portion of the upright column; a tension spring is arranged between the lower net folding mechanism and the fixing plate, a first air cylinder is arranged on the fixing plate, anda telescopic rod of the first air cylinder is in contact with the lower net folding mechanism. The device further comprises a cylindrical auxiliary net which is located in the main net and provided with an upper opening; the mesh size of the auxiliary net is smaller than that of feed particles, and the lower edge of the auxiliary net is connected with the lower net folding mechanism and a plurality of lower coiling devices arranged at the lower part of the net rack respectively. The device has the advantage that waste of the feed particles is effectively avoided, it is ensured that the feed particles are kept clean and sanitary, and the utilization rate of feed is effectively increased.
Owner:郭毅
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