40results about How to "Small mesh" patented technology

The invention provides a method for producing polyester POY filament in scale by recycling PET bottle chip. Recycled waste PET bottles are crushed into flaky bottle chip, dried after cleaning, and then sent into a crystallizing bed body; under the action of hot air entering the crystallizing bed body, crystallization is carried out, a crystallizing layer is formed on the bottle chip surface, and then the bottle chip is sent into a drying tower for drying; the dried bottle chip enters a screw extruder for melt extrusion, and the obtained melt is sent into a two-stage filtering device for filtering and then enters a spinning box; and a high-speed spinning process is adopted for spinning to produce the polyester POY filament. The method for producing the polyester POY filament adopts a filling type drying mode, the drying is even and the operating cost is low; a screw mixer is arranged in the drying tower, which solves the problem of 'arching' that happens to the recycled PET bottle chip during the drying process; and the two-stage filtering device is adopted, which ensures the filtering quality. Therefore, the high-end product-polyester POY filament can be continuously produced in large scale.

The invention relates to a method for preparing ginkgolide compound, belonging to the medicine field. The invention is characterized in that ginkgolide compound raw materials are prepared through the following method that: ginkgo leaves or ginkgo leaf extracts are taken and are extracted in aqueous solution, the obtained extract liquid is filtered and is extracted by using organic solvent, the obtained extract liquid is concentrated and is mixed with 200-mesh to 1,000-mesh silica gel, the obtained mixture is dried, eluent rich in ginkgolide compound is collected by adopting silica column chromatography, the collected eluent is crystallized to respectively obtain ginkgolide A, ginkgolide B, ginkgolide C, ginkgolide J, ginkgolide M and ginkgolide K raw materials, and the contents are respectively 90 percent to 110 percent. The invention has the advantages that the purity of the ginkgolide compound prepared through the method is high; and the preparation process is simple, the transfer rate is high, the cost is low and the industrial scale production can be realized.

The invention provides a water-borne sound-insulating damping coating for a ship. According to the water-borne sound-insulating damping coating for the ship, water-borne mixed emulsion is used as film forming matter, inorganic filter is used as main filler, and coating aids are added. The water-borne sound-insulating damping coating for the ship mainly comprises, by weight, 30 parts to 55 parts of water-borne styrene-acrylic emulsion which is of an interpenetrated network structure, 30 parts to 60 parts of the inorganic filler and 20 parts to 40 parts of fire retardants. The water-borne sound-insulating damping coating for the ship is prepared by preparing the water-borne mixed emulsion, adding the filler and the aids, and conducting paint mixing, white mica powder is used as functional damping filler, and blanc fixe is used as functional sound-insulating filler. The water-borne sound-insulating damping coating for the ship has the advantages that the recombination loss factor is high, and the sound insulation coefficient is high; the performance of being rapidly dried at normal temperature can be achieved; the adhesive force to a steel plate is high; the fire retardant property is high, and the shipment use requirement is met; the steel plate is free of rust; the workability is high; no hazardous substances exist, and environmental friendliness is achieved.

The invention discloses a reticulated endovascular stent which comprises a plurality of supporting unit rings and connecting bars, wherein the supporting unit rings consist of a plurality of wave-shaped bars with wave-shaped structures; the connecting bars are connected to the adjacent supporting unit rings to form the cylindrical reticulated endovascular stent, the axial length of each supporting unit ring is less than 1.36mm, and the optimal range is between 0.65mm and 1.03mm; the distance between every two adjacent supporting unit rings is less than 0.5mm, and the optimal range is between 0.1mm and 0.44mm; the connecting bars positioned among different supporting unit rings are axially crossly arranged; the connecting bars connected with the supporting unit rings at two axial ends of the stent are set to be n-shaped connecting bars, and other connecting bars are blocky entity bars and/or short curved bars; and wave crests and/or troughs of the curved bars are provided with strengthening rings strengthening the supporting force. The stent has smaller mesh, can effectively lower the postoperative restenosis rate, and improves the medical treatment effect. The reticulated endovascular stent is suitable to the interventional technique, and is especially suitable to the percutaneous coronary intervention.

The invention discloses a printed circuit board with a net as a substrate, which is named as a net substrate. The net substrate comprises a substrate net, an upper-layer conductive layer, and a middle bonding layer, wherein the substrate net is a metal wire net or a metal board punching net woven in a high density mode; a metal film or a thin printed circuit board or a flexible printed circuit board (FPC) is used for making a needed circuit graph for welding a connection element, places without wiring and without elements on the upper-layer conductive layer are removed, and places where pins of a mounted element or heat sinks need to be directly contacted with the substrate net are perforated; and the middle bonding layer is a prepreg or a high temperature-resisting adhesive, a vacuum thermal lamination process is adopted to laminate the substrate net and the upper-layer conductive layer as a whole, and the pins or the heat sinks, which need to be directly contacted with the substrate net, of the element can be directly welded or bonded by using a thermal conductive adhesive on the substrate net. The printed circuit board with the net as the substrate can be used in fields in need of air circulation and heat dissipation, and has the advantages of good heat dissipation effects, light weight, flexibility, and low cost.

The invention provides a single battery being capable of resisting overloading and high-spinning and being high in capacity. A preparation method includes the steps of: successively tightly laminatinga nickel square-mesh net, a graphite sheet, positive powder, insulation powder, a negative pole sheet and a current collector; surrounding and compacting the outer rings of the insulation powder andthe negative pole sheet by a current blocking ring which is produced by mixing and pulping MgO and asbestos according to mass ratio of 2:1 and punching the mixture into a ring; the insulation powder is a mixture of LiCl-LiBr-LiF ternary eutectic substance and MgO according to the mass ratio of 1:1-1:1.5, wherein the mixture is compressed to form an insulation layer being 0.4-0.6 mm in thickness; the positive powder is a CoS2/FeS2 mixture according to the mass ratio of 1:1, wherein the positive powder also contains insulation powder accounting for 15-18% by mass of the positive powder and lithium oxide accounting for 2-5% by mass of the positive powder. The single battery has strong anti-severe environment capability, can output stable voltage and is high in specific energy, and also satisfies the demand of resisting overloading and high-spinning and being long in service life.

The invention relates to the technical field of home textiles, in particular to a simple newly-hatched silkworm brushing off method for silkworm artificial feed breeding. The simple newly-hatched silkworm brushing off method for silkworm artificial feed breeding comprises the following steps of (1) silkworm egg incubation; (2) silkworm egg scattering and disinfecting; (3) egg amount weighing and zoning; (4) feed treatment; (5), light sensing for newly-hatched silkworm brushing off; and (6) light supplementing and temperatuer rising. On the basis of feed breeding, starting from each technical link of newly-hatched silkworm brushing off according to physiological development characteristics of silkworms, by combining manners of optimizing temperature and humidity control, feed pretreatment,light supplement and temperature supplement in each stage of loose egg incubation, directly scattering loose eggs on the feed during artificial feed breeding, irradiating with an LED yellow warm lightlamp and the like, the method achieves the effects of one-time quick, labor-saving and efficient newly-hatched silkworm brushing off, is suitable for mechanical newly-hatched silkworm brushing off, and provides technical support for large-scale young silkworm artificial feed breeding.

The invention relates to a bonding-type agricultural net mainly formed by weaving sheath-core composite filament through a plain or leno weaving manner, subjecting the agricultural net after weaving to thermal treatment at a given temperature for a given time to melt the sheath layer and keep the core layer unchanged so as to realize contact at the position of the intersection point of warp and weft and firmed bonding, and further adding color master batch, anti-aging agent, uvioresistant stabilizer, flame retardant, antibacterial agent and other functional additives to the sheath layer. The agricultural net has the advantages of high strength, durability and weather resistance and firm structure, prevents the weft and the warp from easily sliding under the action of external force and prevents meshes from deforming. Therefore, the invention is applicable to aspects of insect prevention, bird prevention and hail suppression and the like in agriculture and has positive significance in guaranteeing the output and quality of crops.

The invention discloses a process and a system for preparing high-strength blocky active lime from carbide slag. The process comprises the steps: (1) crushing carbide slag in a drying crusher and enabling the crushed carbide slag to enter a multistage preheater after being dried by high-temperature dry gas, wherein the high-temperature dry gas comes from a gas burning furnace and a cyclone separator, the high-temperature gas from the gas burning furnace and the cyclone separator is taken as a heat source of the multistage preheater, and the high-temperature gas is generated by burning calciumcarbide furnace gas in the gas burning furnace to provide heat; (2) enabling the carbide slag preheated by the multi-stage preheater and high-temperature gas to enter a decomposing furnace together tobe calcined and decomposed, introducing air into the decomposing furnace, and taking the calcium carbide furnace gas and heat generated by burning of the calcium carbide furnace gas as a heat source;(3) collecting calcium oxide obtained by calcining and decomposing through the cyclone separator, removing impurities, feeding an obtained product into a finished product ash bin, pressing the product into blocky active lime, and feeding the blocky active lime into a finished product warehouse; and enabling high-temperature gas obtained after calcination decomposition to enter the drying crusherand the multi-stage preheater again through the cyclone separator.

The invention provides a method for producing dacron FDY (Fully Drawn Yarn) filaments in large scale by utilizing recycled PET (Poly Ethylene Terephthalate) bottle chips. The method comprises the following steps: crushing recycled PET bottles into chips; cleaning and then drying; feeding the chips into a crystallizing bed so as to crystallize, and then drying; pouring the dried bottle chips into a screw extruder for performing fusion extrusion; causing the filtered flux to enter into a homogenizing kettle and performing condensation polymerization for 1.4-1.5 hours, thereby homogenizing the flux in the homogenizing kettle; causing the homogenized flux to enter into a spinning box; and spinning according to a high-speed spinning technology, thereby obtaining the dacron FDY filaments. A homogenizing step is added in the producing method, so that the problems of big viscosity fluctuation and inferior stability of the flux of the PET bottle chips are solved, and the continuous and large-scale production of the FDY filament products by taking the recycled PET bottle chips as raw materials is realized.

The invention discloses a high-temperature fan with multiple cooling mechanisms, and belongs to the technical field of fan equipment. The high-temperature fan with the multiple cooling mechanisms includes a shell and an inner shell disposed inside the shell. A fan motor is arranged in the inner shell, the fan motor, the inner shell and the shell are all coaxially arranged, a gap is formed betweenthe shell and the inner shell, the right end of the fan motor is connected with a cooling drive shaft, and the cooling drive shaft is provided with a wind turbine blade. A fan is connected to the leftend of the fan motor, and two ventilation holes are formed in the left side wall of the shell. An elastic spiral plate is wound around the axial outer wall of the fan motor to achieve rapid and effective heat dissipation. Cooling water is used for dissipating the fan motor, compressed air is used for radiating a fan drive shaft, the heat dissipation efficiency is effectively improved, the damagephenomenon of the high-temperature fan under high-temperature conditions is effectively avoided; and in addition, vibration can be effectively reduced, and the working stability of the high-temperature fan is improved.

The invention relates to the technical field of traditional Chinese medicine decoction pieces, in particular to radix angelicae sinensis traditional Chinese medicine decoction pieces and a preparationmethod thereof. The preparation method comprises the following steps of A, material selection and washing; B, infiltration; C, slicing and steaming; D, vacuum freeze drying and smashing; E, encapsulation; F, drying and tabletting. The preparation method is simple in process, the operation is easy to control, the production efficiency is high, and the cost is low; through encapsulation, active functional ingredients in radix angelicae sinensis are effectively protected, the water content is equal to or lower than 4.5%, the ligustilide content is 57.83%-58.64%, the ferulic acid content is 0.061-0.073%, the radix angelicae sinensis traditional Chinese medicine decoction pieces prepared by using the method are easy to dissolve and easy to digest and absorb, the dissolution rate is 97.25-98.88%, and bacteria are not easy to breed. The content of aflatoxin B1 is 1.6-2.3 microgram/kg, the shelf life is long, the quality is stable and the preparation method can be used for massive industrialproduction.

The invention discloses a vibration sieve capable of adjusting sieve pores. The vibration sieve comprises an outer framework, an outer sieve net, an inner framework and an inner sieve net, wherein the outer sieve net and the inner sieve net are identical in structure, the outer sieve net and the inner sieve net are respectively arranged in the outer framework and the inner framework, wires of the outer sieve net and the inner sieve net respectively form a 45-degree angle with the outer framework and the inner framework, inner sides of two wide rods of the outer framework are respectively provided with a slide groove with two closed ends, the inner framework is arranged in the slide groove, the length of the slide groove is greater than the length of each wide rod of the inner framework, and the outer side of the wide rod of the outer framework is provided with a fixing device for fixing the position of the inner framework. According to the vibration sieve with adjustable sieve pores, the inner framework and the inner sieve net slide, so that the inner sieve net and the outer sieve net are staggered, and the sieve pores of the vibration sieve are smaller; when the inner sieve net is not required to be reduced, the inner framework can be moved to an original position, and the vibration sieve can be larger; the size of the sieve pore can be adjusted without replacing the vibration sieve.

The invention discloses a badminton system with a selfie function. The badminton system comprises a main net, two symmetrical net posts and a racket with a selfie stick function, wherein the main net comprises two subnets, and secondary subnets are arranged in the subnets; each net post is formed by connecting a first net post and a second net post, both the first net post and the second net post are hollow, the first net post is located above the second net post, a rotary shaft is arranged in the first net post in the longitudinal direction, and openings are formed in opposite sides of the two first net posts; the rotary shafts are wound with the subnets, and springs are arranged on the rotary shafts, so that the subnets wind around the rotary shafts automatically when not stretched by external force. The badminton system with the selfie function can realize the selfie stick function, can be used for arranging a photographing device for selfie, can be further used for night illumination and is multifunctional and better in practicability; the net can be accommodated into the net posts automatically, so that a badminton rack is more convenient to carry, arrangement and accommodation of the net are avoided, and the badminton system is more convenient to use.

The invention discloses a wave-resistant self-pressure-relief storage tank for petroleum highway and railway transportation. The wave-resistant self-pressure-relief storage tank comprises a self-adaptive variable-diameter wave-resistant partition plate, a flame-retardant self-adaptive constant-pressure mechanism, an exhaust cylindrical storage tank assembly and a double-layer external protective shell. The invention belongs to the technical field of petroleum transportation, and particularly relates to an anti-wave self-pressure-discharging storage tank for petroleum highway-railway transportation. The self-adaptive variable-diameter wave-resistant partition plate is creatively provided, when liquid vibrates at a high speed during rapid starting or sudden braking and the like, the liquid impacts the self-adaptive variable-diameter wave-resistant partition plate at a high speed, the variable-diameter valve elastic valve clack can be bent inwards when subjected to high-speed impact, the area of the variable-diameter valve elastic valve clack is reduced, and the self-adaptive variable-diameter wave-resistant partition plate is formed. The amount of liquid passing through the self-adaptive variable-diameter wave-resistant partition plate is reduced; on the basis of an air pressure and hydraulic structure principle, a flame-retardant self-adaptive constant pressure mechanism is creatively provided, the storage volume of internal gas is changed through a lifting type pressure regulating mechanism capable of freely sliding, and the air pressure is reduced by increasing the volume.

The invention discloses a medium filter for an electric automobile heat management system convenient to replace. The medium filter comprises a base, wherein a precipitation cup is connected to the base in a threaded mode; a main channel is horizontally arranged in the base, the main channel is connected to a circulation pipeline of the electric automobile heat management system in series through amedium inlet and a medium outlet of the main channel, a filter element is clamped in the precipitation cup, an annular cavity is defined between the side wall of the filter element and the inner wallof the precipitation cup, and an inlet part of the main channel communicates with the annular cavity; the inner cavity of the filter element communicates with the outlet part of the main channel upwards; a precipitation cavity is defined by the bottom surface of the filter element and the inner wall of the precipitation cup below the filter element bottom surface, and the settling cavity is downwards connected with a sewage discharging structure; and an inlet cock valve is arranged on a valve seat of an inlet part of the main channel, and an outlet cock valve is arranged on a valve seat of anoutlet part. According to the medium filter, too much media can be prevented from flowing out when the filter element is replaced, the cost of supplementing liquid is reduced, and the maintenance workload of frequently supplementing the liquid medium is avoided. According to the medium filter, the sewage discharge and backwashing are integrated, so that the filter element is prevented from beingblocked.

The invention discloses an electronic device heat dissipation structure with a three-dimensional net-shaped structure and a manufacturing method. The electronic device heat dissipation structure comprises a heat dissipation plate, a multi-layer micron-sized net-shaped structure and a multi-layer framework. A plurality of layers of micron-sized net structures are arranged on the heat dissipation plate, a framework layer is arranged between every two adjacent layers of micron-sized net structures, the micron-sized net structures are modified with nano-sized microstructures, and the heat dissipation plate, the micron-sized net structures and the framework layers are all made of copper. On the microcosmic level, the supplementing capacity of liquid can be improved, and bubble disengagement isfacilitated, and on the macroscopic level, the heat exchange area can be increased, and the heat exchange capacity is enhanced.

The invention discloses a heat treatment casting method for a large-size 1.2382 cast steel die insert, and belongs to the technical field of die casting. As existing 1.2382 cast steel is likely to crack in the heat treatment process, the size of the 1.2382 cast steel die insert is limited. According to the heat treatment casting method, in the heat treatment casting process, an advanced demolding rapid cooling method is adopted to enable the large-size die insert to form metallographical structure organization which is same or similar to that of a small-size die insert, and cracking of the die insert in the follow-up quenching and drawing process is avoided.

The invention relates to an anti-blocking water tank faucet, which includes a water tank part and a water outlet part. The water tank part includes a main water tank and an auxiliary water tank. A baffle plate is arranged between the main water tank and the auxiliary water tank. The side wall, the left side wall, the right side wall and the bottom wall. A through hole is opened in the center of the bottom wall. A downpipe is fixedly connected under the through hole. The downwater pipe is detachably connected with a filter basket. The filter basket includes a basket body and the top of the basket body A circle of baffles is fixed on the outer edge, and the baffles are connected with handles. The basket body is composed of a grid-like filter. The invention facilitates the cleaning of the solids filtered out in the water tank, and can retain more solids.

The invention discloses an ecological breeding farm, relates to the technical field of ecological breeding, in particular to an ecological pig farm. The ecological pig farm comprises a pig farm main body, a driving device and a feeding device, wherein the periphery of a base is connected with an outer fence and an inner fence; a ceiling is installed at the upper ends of the outer fence and the inner fence; an outer door is installed on the outer fence; an inner door is installed on the inner fence, and the inner door corresponds to the outer door in position; the outer fence and the inner fence are annular; a first motor is connected with an upper support, and the two ends of the upper support are provided with the two second motors respectively; the second motors are connected with the lower support through winding wheels and traction ropes; two third motors are installed on the lower support and connected with the inner end of a rotating pipe, and a whip is arranged on the outer wallof the rotating pipe; the feeding device comprises a feeding support, wherein two fourth motors are installed on the feeding support, and the fourth motors are connected with pig troughs through wirereels and traction ropes. The isolation meshes of the inner fence are relatively large and can block domestic pigs, the meshes of the outer fence are relatively small and can prevent mosquitoes fromentering, and therefore the possibility of ill of the domestic pigs can be lowered.

The invention discloses a solar cell silk-screen printing method. The method comprises the steps that high tensile silver paste is placed on the upper surfaces of first screen printing plates, under extrusion of a scraping knife, the high tensile silver paste is printed on the upper surface of a solar cell, and a solar cell printed with a main grid line is obtained; the solar cell printed with the main grid line is dried, and the dried solar cell is obtained; auxiliary grid silver paste good in printing and good in ohmic contact is placed on the upper surfaces of second screen printing plates, under extrusion of the scraping knife, the auxiliary grid silver paste good in printing and ohmic contact is printed on the upper surface of the dried solar cell, and the solar cell printed with the main grid line and the auxiliary grid line is obtained; and the number of the first screen printing plates is smaller than the number of the second screen printing plates. According to the solar cell silk-screen printing method, different screen printing plates and silver paste are adopted for printing the main grid line and the auxiliary grid line, the making cost of the solar cell can be reduced, the conversion efficiency is improved, and in addition, photovoltaic module with the advantages is provided.