106results about How to "Prevent reverse osmosis" patented technology

The invention provides a helium ionization gas chromatography system for analyzing decomposition products of SF6. The system in characterized by includes a central cutting device and a double helium ionization detector. The central cutting device includes four switching valves, six chromatography columns and seven carrier gas paths. The double helium ionization detector includes two sets of helium ionization detector devices. The helium ionization gas chromatography system for analyzing decomposition products of SF6 also includes a chromatography column box temperature controlling device and a carrier gas cutting and air-insulation device, wherein the chromatography column box temperature controlling device includes a set of programme temperature increasing column box and three sets of individual column sub temperature-controlling column boxes, and the carrier gas cutting and air-insulation device includes a set of four-way valve system and a set of carrier gas path. By means of the system, total analysis of the decomposition products of SF6 can be completed just by one sample-feeding operation.

Disclosed are a square air packing device and a manufacturing method thereof. The device comprises at least one inflatable unit and at least one inflation valve. The inflatable unit comprises a plurality of inflation bodies, wherein each inflation body is provided with an inflation chamber. The inflation valve is communicated with the inflation chambers for inflating the inflation bodies. A plurality of side walls are formed after the inflation bodies are bent and heat-sealed. Every two adjacent side walls among the multiple side walls are arrayed roughly in a right-angle mode, so that a square containing cavity is formed by the multiple side walls and used for containing articles to be packed and accordingly air buffer function can be provided for the articles to be packed.

The invention relates to a helium ionized gas chromatographic analyzer for analyzing trace impurities in high-purity germane gas. The helium ionized gas chromatographic analyzer is characterized in that the helium ionized gas chromatographic analyzer comprises a chromatographic column oven, a temperature control system, a signal acquiring and processing system and a tail gas treatment system, wherein the signal acquiring and processing system comprises a helium ionized detector and a chromatographic column workstation, the temperature control system can achieve independent temperature control of all chromatographic columns and the detector and controls the temperature of the chromatographic columns to rise according to the time program, and the chromatographic column workstation comprises three switching valves (including one ten-way valve and two six-way valves), three chromatographic columns, four needle valves and three carrier gas paths, and the helium ionized detector is connected with the line of the chromatographic column workstation. The helium ionized gas chromatographic analyzer is used for analyzing trace impurities in high-purity germane gas, can achieve ppb-level impurity analysis through high sensitivity of the helium ionized detector and realizes total analysis of the germane impurities through once sampling.

The invention provides a sponge urban road structure which avoids the deposition of pavement rainwater, comprising a roadway drainage asphalt pavement, a greening planting tray and an external drainage pipe. Two symmetrical middle protective plates are fixed through concrete mosaic at the inner end side of the roadway drainage asphalt pavement, and a concrete channel is arranged between the two middle protective plates. The invention comprehensively realizes a sponge city road structure avoiding pavement rainwater deposition through the mutual cooperation of the various structures, Construction of sidewalks, A 6CM thick permeable brick pavement pave through that sidewalk, 3CM medium sand level layer are sequentially laid under that water-permeable brick pavement of the sidewalk, 10CM permeable cement concrete base course and 10CM subgrade mixed with crushed stone, so that the sidewalk can reach more than 70% of the water permeability, and can create a low-carbon environmental protection of the natural living environment, maintain the ecological balance of the city, maintain good water permeability of the ground, moisture retention.

The invention provides a method for improving the leaching rate of calcification roasting vanadium slag and improving the filtering effect. The method comprises the following steps: (1) crushing the vanadium slag subjected to calcification roasting, and then fully mixing the vanadium slag with water to prepare ore slurry; (2) adjusting the acidity of the ore slurry by using sulfuric acid so as to perform leaching on the vanadium slag subjected to calcification roasting; (3) filtering to separate the ore slurry after leaching so as to obtain vanadium leachate and to-be-washed tailings; and (4) performing drip washing on the to-be-washed tailings by using water, and collecting the slag washing water. The method has the improvement that a small amount of a leaching additive namely polyacrylic acid, sodium citrate, polydimethylsiloxane, potassium sodium tartrate or urea is also added in the ore slurry in the step (1). Compared with the prior art, the method provided by the invention has the advantages that the vanadium leachate is increased, the vanadium leaching rate is improved, and the output-input ratio for recycling the slag washing water is relatively high.

The invention discloses a health dry and comfortable sanitary towel with an antisepsis, ventilating cool and refreshing surface. The health dry and comfortable sanitary towel is composed of a surface layer clinging to the skin, an adoption layer disposed under the surface layer, a ventilating leakproof film arranged at the outermost, and back glue used for fixing the sanitary towel. The surface layer comprises a waterpower entanglement integrated non-woven base cloth which is formed by that a fake bonding spun-bonded fibrous reticulum and a carding fibrous reticulum are reinforced through spunlace on line or off line, the carding fibrous reticulum is carded by hydrophilic short chitosan fiber and mint fiber, the fake bonding spun-bonded fibrous reticulum is spun by thermoplastic fiber filament which is subjected to softening modulus treatment and hydrophilic treatment, the carded fiber layer clings to the skin, and the fake bonding spun-bonded fibrous reticulum combines with the adoption layer. 2 to 5 layers of carding fibrous reticulum (3) and a fake bonding spun-bonded fibrous reticulum (2) are reinforced through spunlace, the problems that a conventional multi-layer sanitary towel is over thick and poor in ventilation can be solved.

The invention discloses a high-permeability diversion layer material and a preparation method thereof, and relates to the field of disposable sanitary products. The preparation method of the high-permeability diversion layer material is characterized in that by compound-superimposing and selecting an upper layer vertical net and a bottom layer direct laying net, matching coarse denier profiled cross-section fibers and fine denier hydrophilic double components in the upper layer vertical net, reasonably matching hydrophilic and water-repellent double-component fiber in the bottom layer direct laying net, selecting a hot air penetration thermal stabilization mode and reasonably selecting lustring and setting technological parameters of a hot pressing roll, the high-permeability diversion layer material with good permeability is prepared. Therefore, the technical problems of poor diversion performance, inability in storing liquid, poor transient sucking effect, complex technology, poor permeability and difficulty in quantity production of a diversion layer material are solved, and the effects of enabling the diversion layer material to have good abilities of transient suction property, diversion property, barrier property and temporary liquid storage and to have good effects of ventilation, moisture permeation and reverse osmosis prevention are achieved.

The invention provides a composite layer. The composite layer is used for controlling acidization of a mining slag heap yard and comprises a flow guiding layer, a first nonwoven fabric layer, a sand and stone layer, a second nonwoven fabric layer and an isolation layer which are arranged in sequence. The invention further provides a method for controlling the acidization caused by the mining slag heap yard and a revegetation method of the mining slag heap. By establishing a buffer isolation zone between a mining slag heap yard acidization surface and a plantation layer, the acid water containing a variety of heavy metal ions can be blocked and isolated, sulphur minerals in the lower layer can be effectively prevented from being further oxidized and acidified, the acid liquor in the lower layer can be prevented from permeating reversely into the upper layer so as not to pollute the plantation layer and poison plants under the action of soil capillaries. By reconstructing the plantation layer on the composite layer, a long-term stable fit environment can be created for the growth and development of plants, the vegetation degradation can be avoided, and the purposes of ecological remediation, environmental improvement and soil and water conservation can be achieved.

The invention discloses an embedded type superficial layer combination drainage pipe which comprises a filter pipe, a seal ring and a well pipe. Multiple filter holes are formed in the filter pipe andare used for collecting seepage water in a foundation pit; the seal ring is arranged on the top part of the filter pipe and is used for preventing the seepage water from seeping upwards; and the wellpipe is arranged on the top part of the seal ring and communicates with the filter pipe. The subsurface seepage water in the foundation pit is collected by adopting superficial layer combination drainage, the foundation pit is removed by adopting a water pump, and meanwhile, the seal ring effectively prevents the seepage water in a water collecting pit from inversely seeping upwards, so that precipitation construction can be carried out without the need of professionals, the cost is low, and the requirement on local superficial layer precipitation for underground construction can be met.

The invention relates to the technical field of water-based paint, in particular to water-based acrylic acid shining paint. The water-based acrylic acid shining paint is composed of, by weight, 90-95 parts of a component A and 5-10 parts of a component B; the component A comprises water-based hydroxy acrylic resin, BEK-760, water-based aluminium powder, an anti-settling agent, cosolvent, neutralizer, a CAB aqueous solution with the mass fraction being 30%, 2959 and the balance water; the component B comprises water dispersion type polyisocyanates. According to the water-based acrylic acid shining paint, a paint film is high in drying speed, metallic pigment is uniformly arranged, the paint film is uniform in color, and excellent adhesion is achieved. The photoinitiator 2959 is added to the paint, in the construction process, the paint is sprayed at the same time of being cured through illumination of an ultraviolet lamp, the paint film is high in drying speed, meanwhile, 2529 can further promote system volume shrinkage, arrangement of the aluminium powder is facilitated, thereby a good arrangement effect is achieved, and the paint film can be uniform in color.

The invention discloses a recycled aggregate total pervious concrete pavement structure and a construction method thereof. The pavement structure comprises a pervious cushion ply, a pervious base layer, a pervious surface layer and a pervious cover layer paved from bottom to top; the pervious cushion ply is made from natural gravels; the pervious base layer and the pervious surface layer are recycled aggregate total pervious concrete; and the pervious cover layer is pervious concrete prepared from a aggregate. The pavement structure disclosed by the invention is relatively good in water permeability and wear resistance.

The invention discloses a recycled aggregate ecological permeable brick, which comprises a permeable brick body. The permeable brick body has a three-layer structure. Cavity layer, the bottom end of the permeable cavity layer is provided with a reverse osmosis layer, and the reverse osmosis layer is arranged on the soil foundation, and its production process includes: preparing recycled micropowder, preparing spoil particles, preparing plant material, stirring, Preparation of reverse osmosis layer and grass planting layer, preparation of water permeable cavity layer, pouring and demoulding, the invention facilitates the prevention of reverse osmosis of water through the reverse osmosis layer, and facilitates the planting of flowers and plants through the grass planting layer, which is ecological and environmentally friendly. It is prepared through the steps of pouring into molds, steam curing, drying, extrusion, demoulding, impregnating external admixtures and other steps. The invention has good water permeability; natural color, ecological and environmental protection; high strength, not easy to break, and good durability; The production process is energy-saving and environment-friendly, and the production process is simple.

The invention discloses an anti-back leakage and anti-side leakage sanitary napkin which also increases the absorbing capacity in the middle, the technical proposal for the realization is that: an absorption layer is arranged between an upper surface layer and a bottom layer, the both end parts of the sanitary napkin which are also arranged between the upper surface layer and the absorption layer are provided with a multi-functional material protection layer. The central position of the sanitary napkin which is also positioned between the upper surface layer and the absorption layer is provided with a middle protrudent flow guide absorption layer, the middle protrudent flow guide absorption layer is composed of a flow guide absorption inner core, and the flow guide absorption inner core is produced by adopting the water guide materials and water absorbent materials. The both sides of the sanitary napkin are provided with stereo-protections, or the invention can not be provided with the stereo-protections. The colors of a water repellent material protection layer and the stereo-protections or the middle protrudent flow guide absorption layer can be any color. The sanitary napkin of the invention has good protection role, the users can not only have comfort feel, but also can have great safety protection and ideal effect after usage. Furthermore, the invention is applicable to various people groups and various states. The invention can produce a series of products, such as: a sport type, a girl type, a tourism type, a night type, and so on.

The invention relates to the technical field of basements, in particular to a basement waterproof and drainage combined construction method. The construction method mainly includes the construction steps that S1, construction measurement is conducted; S2, foundation pit excavating is conducted; S3, drainage ditch and water collecting well construction is conducted; S4, basement body construction is conducted; S5, bottom plate leveling is conducted; S6, bottom plate waterproof and drainage construction is conducted; S7, wall body waterproof and drainage construction is conducted; S8, surface layer construction is conducted; and S9, drainage monitoring device installation is conducted. Waterproof and drainage plates adopted in a bottom plate and a wall body are PVC drainage plates, the characteristic that the service life of the PVC drainage plates is far longer than that of waterproof rolls in the prior art is utilized, and the phenomenon that the draining plates are aged, and water leakage happens is reduced; and meanwhile, the structure construction that the PVC drainage plates are uneven is utilized, drainage cavities are formed in the bottom plate and the wall body, leaking water can be prevented from being led out of the bottom plate and the wall body through upstream faces of the PVC drainage plates in the cavities, and the service life of buildings is further prolonged.

The invention discloses a sediment treatment controllable irrigation type saline-alkali land improvement system. The system comprises a solar power-generating device, a fresh water tank, an irrigationdevice, a semi-permeable membrane, a drainage device, a sand removal device and a saline-alkali water purification tank. The fresh water tank is communicated with the irrigation device, the irrigation device uniformly sprays water to the surface of saline-alkali land to realize irrigation, underground saline-alkali water is drained by the drainage device, and after sediment removal through the sand removal device, water enters the saline-alkali water purification tank and then enters the fresh water tank after purification, so that water resources are saved. The semi-permeable membrane is arranged at a position 40-50cm under the saline-alkali ground, and the burial depth is larger than that of the top of the drainage device, so that reverse osmosis of the underground saline-alkali water to the ground can be prevented. The solar power-generating device supplies electric energy to motors of the drainage device and the irrigation device, and convenience and energy saving are realized. The saline-alkali land improvement system has advantages that water resource recycling is realized during saline-alkali soil improvement, energy saving is realized, and influences on growth of ground crops due to reverse osmosis of the underground saline-alkali water to the ground can be prevented effectively.

The invention discloses a reverse osmosis preventing absorbing article and a manufacturing process thereof. The reverse osmosis preventing absorbing article comprises an absorbing article main body, a leg anti-leakage elastic component, an anti-leakage sheet, a waist elastic component, a fixing waist plaster and a fixing waist plaster fitting piece, wherein the leg anti-leakage elastic component and the anti-leakage sheet are respectively arranged on two sides of the absorbing article main body in the longitudinal direction; the waist elastic component is arranged on the absorbing article main body; the absorbing article main body comprises a water permeable surface layer, an absorbing core layer and a waterproof bottom layer which are successively arranged from top to bottom; the absorbing core layer comprises a lower absorbing core layer and an upper absorbing core layer which is compounded onto the lower absorbing core layer; the shape of the upper absorbing core layer is matched with that of the lower absorbing core layer; the upper absorbing core layer is provided with a through cavity which penetrates through the upper absorbing core layer from the thickness direction of the upper absorbing core layer along the length direction of the upper absorbing core layer; the length of the through cavity is greater than half of the length of the absorbing core layer and is smaller than the length of the absorbing core layer; the side wall of the through cavity is downwards inclined in the opposite direction; and the through cavity is matched with the upper surface of a position, which corresponds to the through cavity, of the lower absorbing core layer to form a reverse osmosis preventing region.

The invention discloses a paper diaper with an independent layered absorption core material. The absorption core material is formed by layered placement of super-absorbent resin and fluff pulp through a fixable and detachable filter bag with a double-layer inner cavity structure. An operating principle of the paper diaper includes that since the fluff pulp is poor in moisture retention performance but better than the super-absorbent resin in liquid absorption capacity, urine entering the absorption core material is partially absorbed by the lower fluff pulp first and partially absorbed by the super-absorbent resin, the super-absorbent resin swells after liquid absorption and extrudes the lower fluff pulp due to stiffness of an upper nonwoven fabric of the filter bag, and then urine overflowing from the fluff pulp is absorbed by the super-absorbent resin, so that urine in the fluff pulp is greatly reduced by repeating of the process, a great moisture retention effect is achieved, and urine reverse osmosis is effectively prevented. Due to the detachable structure, the paper diaper is recyclable, thereby being more environmentally friendly.

The invention discloses a unidirectional pure cotton flow-guide material, a preparation method thereof, and a product. The preparation method comprises a compounding step of compounding a hydrophiliccotton material with a water-repellent cotton material to obtain the unidirectional pure cotton flow-guide material. The water-repellent cotton material in the unidirectional pure cotton flow-guide material covers the hydrophilic cotton material, and a part of hydrophilic cotton fibers stretch into water-repellent cotton fibers, and is used for rapidly guiding downwards water. The mass proportionof the hydrophilic cotton material is less than the mass proportion of the water-repellent cotton material. Because the hydrophilic cotton material and the water-repellent cotton material are compounded and combined into an integrated structure, the hydrophilic fibers and the water-repellent fibers are mutually staggered, a liquid in a water-repellent layer can be rapidly conducted to a hydrophilic layer, and a water flow channel is instantaneously formed, so that rapid infiltration is achieved. The mass proportion of the hydrophilic cotton material is less than the mass proportion of the water-repellent cotton material, and the material achieves a good balance point in the aspects of hydrophilicity and water repellency, so that the dry-touch feeling of the surface layer of the material can further be ensured.

An adhesive dehumidifier comprises a housing with open and circulating flow, humid absorbing and releasing device with dehumidifying rotor that is divided into humid fetching area and return area connected with the said circulating flow, with the humid absorbing and releasing device fostering the flow of air, being able to separate water from the humid fetching area and discharging to the return area, heat exchanger on the circulating flow with major water discharge section to discharged condensed water, and an assistant water discharge section to discharge condensed water. It can keep the smooth flow of air and improve the dehumidification performance of products.

The invention relates to the field of road surface water seepage governance and discloses a construction method used for tunnel road surface water seepage governance. According to the disclosed construction method used for tunnel road surface water seepage governance, guiding drainage is performed by adopting an angle steel hole forming method, according to specific construction steps, a water outflow point and a water seepage range are looked over and determined; groove cutting is performed; a trapezoidal groove is formed; groove forming treatment is performed, and the trapezoidal groove is made to communicate with a water draining ditch; angle steel is arranged in the trapezoidal groove; filling of a gravel layer is performed; and road surface layer sealing is performed. According to theconstruction method, the angle steel is adopted for drainage, and the angle steel is firm in material, and not prone to damage due to vibration caused by a vehicle; expanding bolts are fixed to the two sides of the angle steel, but not the top of the angle steel in order to avoid that concrete damage is caused by the fact that construction is not proper, the angle steel is vibrated and bounces out, tires of passing vehicles are punctured, and accidents are caused; and the positions around the angle steel are filled with the gravel layer in order to prevent that due to the fact that the wateramount is too large or due to other factors, water flow reversely seeps, and discharging into the water draining ditch in time through a hole gap of the gravel layer can be achieved.

The invention relates to a shoe sole, and provides a kitchen work shoe sole and a shoe with the shoe sole. By means of the kitchen work shoe sole and the shoe with the shoe sole, a contact area between the shoe sole and the ground can keep dry, the condition that liquid reversely osmoses to the position between the shoe sole and the ground is avoided, and the anti-skid practicability is high. The kitchen work shoe sole comprises an outsole, and a plurality of wavy slippage-stopping strips are evenly arranged on the outsole in the length direction of the outsole and cross over from one lateral edge of the outsole to the other; flow guide slots are formed between adjacent wavy slippage-stopping strips; a plurality of racks are evenly distributed on the surfaces, in contact with the ground, of the wavy slippage-stopping strips; water discharging gaps are formed between adjacent racks and are communicated with the flow guide slots; each wavy slippage-stopping strip is formed by wave crest sections and trough sections which are arranged in a staggered manner; slots are formed in the positions, where the trough sections of the wavy slippage-stopping strips are located, of the outsole; the trough sections of the wavy slippage-stopping strips are laid at slot bottoms of the slots; and the edges of slot openings of the slots are arranged to be protruding arc-shaped edges.

The invention discloses a flow guide structure. The flow guide structure comprises a surface layer, a flow guide layer, a core body and a bottom film which are stacked in sequence, wherein the flow guide layer is of a multilayer structure and at least comprises a first flow guide layer and a second flow guide layer, the first flow guide layer is close to the surface layer, and can not only guide aliquid horizontally and vertically, but also cooperate with the surface layer to form a liquid temporary storage area, the second flow guide layer is close to the core body, and is used to quickly guide the liquid guided by the first flow guide layer to the core body, and the second flow guide layer and the first flow guide layer are arranged in an overlapped manner. In the flow guide structure,the flow guide layer with the multilayer structure is arranged between the surface layer and the core body, the first flow guide layer and the surface layer cooperate to form the liquid temporary storage area, the liquid can be temporarily stored when a large amount of the liquid reaches the flow guide structure, the situation that the flow guide structure cannot perform quick absorption, so thatthe liquid is accumulated on the surface of the flow guide structure, and thereby leaking occurs is prevented, and the absorption capacity is increased; and the second flow guide layer cooperates withthe core body to form an absorption area to quickly absorb the liquid in the liquid temporary storage area to prevent the liquid from seeping back to the surface layer to ensure dryness. The invention also discloses an absorption product.

An embedded inflatable packing device used for packing a packing article comprises at least one inflatable buffer body formed by at least two layers of air chamber films and at least one inflation valve formed by at least two layers of valve membranes, wherein the inflatable buffer body comprises a plurality of air storage units; the inflation valve is used for inflating the air storage units and automatically closing to prevent air leakage after inflation is over; and the air storage units are subjected to plastic sealing of a series of planar plastic sealing joints, bending and plastic sealing of a series of three-dimensional plastic sealing joints to form a three-dimensional packing bag for packing the packing article. End parts of the three-dimensional packing bag are embedded so as to increase the buffer thickness and provide a buffer effect for the packing article.

The invention discloses a thin and soft composite-core paper diaper. The thin and soft composite-core paper diaper comprises an elastic water-permeable layer, a permeation water locking layer and a dehumidifying water locking layer, wherein the elastic water-permeable layer is a porous hot-blast-adhesive-bonded non-woven fabric layer, the permeation water locking layer is a hydrophilic nonwoven fabric layer, the dehumidifying water locking layer is a thickened hydrophilic nonwoven fabric layer, the elastic water-permeable layer and the permeation water locking layer are connected together through spunlace composite finishing, and the dehumidifying water locking layer is interwoven with the permeation water locking layer through yarn laying. The thin and soft composite-core paper diaper has the advantages that the water absorption feature of the paper diaper can be kept while a water locking effect is achieved, reverse osmosis of absorbed liquid is prevented, and the softness and comfortableness of the paper diaper are increased due to the fact that the surface layer of the paper diaper has certain elasticity.

The invention relates to a pediatric department trauma surface organic material anti-infection dressing block. The pediatric department trauma surface organic material anti-infection dressing block comprises an anti-infection function layer and a waterproof bottom layer from top to bottom in sequence, wherein at least one organic anti-infection material is arranged on the anti-infection function layer, the waterproof bottom layer is arranged on the lower surface of the anti-infection function layer, the organic anti-infection material is the mixture of one or more of bamboo fiber or derivatives thereof, chitosan or derivatives thereof, povidone-iodine, jute fiber, acetate fiber, alginate, quaternary ammonium salt and sulfadiazine, the inside of the anti-infection function layer comprises a layer of water absorption resin, the upper surface and the lower surface of water absorption resin are each attached to a layer of fluff pulp, several activated carbon particles are evenly distributed inside the fluff pulp, nano-silver or chitosan particles are evenly scattered on the upper surface of the fluff pulp, and several far-infrared chips, an anion chip and a magnetic chip set are arranged between water absorption resin and the fluff pulp. According to the pediatric department trauma surface inorganic material anti-infection dressing block, a remarkable anti-infection and bacteriostasis effect is achieved, and a safe and sterile body surface contact environment is provided for the recovery process of the children.

The invention discloses a waterproof keel for laying photovoltaic panel units and a waterproof photovoltaic panel. The waterproof keel comprises longitudinal drainage keels and transverse drainage keels, keel bodies of the longitudinal drainage keels are provided with first longitudinal water guide grooves, second longitudinal water guide grooves, third longitudinal water guide grooves and supporting faces, and the transverse drainage keels are internally provided with transverse water guide grooves communicating with the second longitudinal water guide grooves and the third longitudinal waterguide grooves; and the two adjacent sides of the photovoltaic panel units are correspondingly in lap joint with the supporting faces and the transverse water guide grooves and are fixed to the firstlongitudinal water guide grooves. Sealants are arranged between the supporting faces and the photovoltaic panel units in a pressing mode. Connecting grooves sinking towards the supporting faces are formed in the keel bodies connected end to end, and waterproof buckle covers bonded with the connecting grooves, the second longitudinal water guide grooves and the third longitudinal water guide grooves in a sealed mode are arranged in the connecting grooves and flush with the supporting faces. The waterproof effect is good, and the power generation effect of the photovoltaic panel units is not affected.

The invention relates to the field of protective fences, and discloses a tool type safety protective fence structure. The tool type safety protective fence structure comprises a fence defining a circumferential closed structure, the fence comprises a plurality of fence units and stand columns, the fence units are detachably connected through the stand columns, oblique tensioning ropes are connected between opposite angles of a local reinforcing structure formed by the fence units and the stand columns, and the oblique tensioning ropes between the two opposite angles of the local reinforcing structure intersect with each other; and the fence is further provided with horizontal tensioning ropes, and the horizontal tensioning ropes are arranged in the circumferential direction of the fence toform a closed loop. According to the tool type safety protective fence structure, the inclined and horizontal flexible tensioning ropes are adopted for reinforcement, the reinforcing effect of a three-dimensional symmetrical geometrical shape is generated, and the mechanical strength and safety of a protective fence are improved while convenient disassembly and assembly are guaranteed; and colorsteel tiles are installed through a tile pressing device, the requirement that the whole use process of the color steel tiles is complete and lossless can be met, and the requirements of zero pollution and environmental protection of construction waste in a standard construction site are met.

The invention discloses a polylactic acid fiber diversion layer material and a preparing method thereof, and relates to the field of disposable hygienic products. The preparing method of the polylactic acid fiber diversion layer material comprises the steps of choosing polylactic acid fiber with different thicknesses and different crimpness, reasonably matching hydrophilic polylactic acid fiber and hydrophilic foam adhesive, reasonably exerting two technologies of hydrophilic foam adhesion and water repellency layer treatment, and well controlling fiber web hot air drying and contact type heat setting processing technological parameters. Therefore, the technical problems of the diversion layer material are solved that the diversion performance is poor, the liquid storage capability is low and the preparing technology is complicated, the effects are achieved that the prepared polylactic acid fiber diversion layer material has comprehensive performance of excellent diversion, moisture vapor transmission, instantaneous adsorption, good stiffness, an antibacterial activity, biodegradation and the like, and the functional requirements of the diversion layer material adopted by the disposable hygienic products for comprehensive diversion, instantaneous adsorption, obstruction and temporary storage for liquid are fully met.