109results about How to "Practical craft" patented technology

The invention provides a three-axis-system composite spinning device and a spinning method for tow-apt-to-fall staple. The three-axis-system composite spinning method is characterized in that the method comprises the steps of: feeding roving silvers containing the tow-apt-to-fall staple and cotton roving silvers into the back roller of a ring spinning machine, and conducting drafting to form a tow-apt-to-fall staple strand and a cotton strand which stretch straight in parallel; after the tow-apt-to-fall staple strand and the cotton strand are respectively positioned by using a tow-apt-to-fall staple strand positioner and a cotton strand positioner, feeding the tow-apt-to-fall staple strand and the cotton strand into the jaw of a front roller and directly feeding filament adjustable tension pulley into the jaw of the front roller; and after the tow-apt-to-fall staple strand, the cotton strand and the filament are output from the jaw of the front roller, twisting the tow-apt-to-fall staple strand and the filament at a first converging point outside the jaw of the front roller to form a structural section, and twisting the structural section and the cotton strand at a second converging point to form a three-axis-system composite yarn. The device and the method provided by the invention has the advantages that not only can the content of the tow-apt-to-fall staples in the spun composite yarn be improved, but also the situations of fiber damage and tow falling can be effectively avoided.

The invention discloses a production process of high-elasticity non-woven three-dimensional cotton, comprising the following steps: mixing a low melting point hot melting viscose fiber and at least two fibers of other fibers in proportion; opening and scotching, and feeding cotton and carding and delivering to a vertical lapping forming machine to carry out vertical forming process. A fiber net is continuously folded and descends in a forming curtain at the action that a pendulum-type swinging folding mechanism swings left and right reciprocately, becomes continuous fiber net layers which are arranged in a vertical direction in a steerable channel, and finally forming the three-dimensional cotton which is arranged in a vertical direction through heat setting and cooling setting. The production process in the invention realizes production through a conventional non-woven heat setting machine at the condition of not adding any chemical adhesive, and sets the product thickness and density according to the process requirements; the process is simple, practical and efficient; any fiber can be used as the basic fiber of the material; the regenerated fiber also can be used for forming; and the material source is wide, is easy to obtain, and is relatively environment-friendly.

The invention discloses a method for manufacturing high-strength needling nonwoven geotextiles. The method comprises the steps of loosening fibers, blending the fibers, carding the fibers into a mesh, spreading the mesh, needling the mesh, carrying out heat setting on the needled mesh and winding the finished product. According to the invention, a heat setting procedure is additionally increased in the traditional process for manufacturing staple fiber needling nonwoven geotextiles; residual stresses, which are accumulated within the fibers and the geotextiles and generated in the procedures of loosening the fibers, blending the fibers, carding the fibers into the mesh, spreading the mesh as well as needling and solidifying the mesh, are eliminated through heat setting treatment so that the knot strength between the fibers is enhanced and the physical mechanical performance of the geotextile is improved and enhanced; and simple and practical process is obtained.

The invention relates to a formation process of an anode aluminum foil for a high-voltage aluminum electrolytic capacitor, which comprises the following steps sequentially: pretreatment, 100-240V first order formation treatment, 300-450V second order formation treatment, 400-600V third order formation treatment, 500-620V fourth order formation treatment, depolarizing treatment and drying, wherein in the pretreatment step, the aluminum foil after erosion pore expanding is put in de-ionized water of 92-100 DEG C for soaking treatment, and the treating solution of the formation treatment is a mixed water solution of some materials of boric acid, phosphate and ammonium pentaborate. The invention has the beneficial effects that the process is practical and can improve the volume of the anode aluminum foil by 8-10% for the high-voltage aluminum electrolytic capacitor with voltage of 400-650V.

The invention relates to a photocatalytic postposed internal-circulation anaerobic fluidized membrane bioreactor. The photocatalytic postposed internal-circulation anaerobic fluidized membrane bioreactor comprises a reaction barrel, a gas stripping barrel, a three-phase separator and a membrane assembly, wherein a water inlet pipe and a gas inlet pipe are arranged at the bottom of the reaction barrel; and the membrane assembly is a cylindrical ceramic membrane loaded with nano-titanium dioxide particles, or the membrane assembly is a hollow fiber ultrafiltration membrane of which a light titanium dioxide particle mesh is hung on the outer surface. The invention further discloses a working method of the photocatalytic postposed internal-circulation anaerobic fluidized membrane bioreactor. An internal-circulation anaerobic treatment technology and a titanium dioxide photocatalytic technology are combined, and advantages of an anaerobic membrane bioreactor and a photocatalytic bioreactor are combined, so that quality of outlet water is obviously improved; and the membrane assembly is arranged at a supernatant part of a three-phase separation zone and doses not directly contact sludge, and nano-titanium dioxide has a photocatalytic effect, so that membrane pollution is greatly reduced, the service life of the membrane assembly is prolonged, and manpower and material resources required in a membrane replacing cycle are reduced.

The invention discloses a double-redundancy six-phase moment motor for a precision instrument and device, and a control method thereof. The motor is an AC permanent magnetic synchronous servo motor, is formed by assembling stators and a rotor, and is characterized in that the stator and the rotor employ a double-stator and single-rotor structure. A double-stator structure is as follows: double stators employ a splicing type structure and are provided with two independent stator windings; the two independent stator windings share one permanent magnet; the housing of the motor stators is provided with cooling grooves, the two sides of the housing are provided with sealing grooves, through a cooling system, the operation temperature of the stator can be reduced, and the output power of the motor is improved; and the two independent stator windings are controlled by a control system so as to realize individual operation of one of the stator windings and parallel operation of the two stator windings. According to the invention, through double-redundancy control, when a certain control system fails, the other system can still work normally, such that the system reliability is improved. The motor and the method provided by the invention can also be applied to other high-precision instruments and devices.

The invention relates to a preparation method and application of a deacetylated chitosan ecological finishing agent used for finishing natural fibers and regenerated natural fiber fabrics. The invention aims to solve the technical problems of a crosslinking problem, size and uniformity of chitosan acetic acid sol particles and stability of the finishing agent. The method is technically characterized by comprising the following steps: mixing chitosan and lacial acetic acid to form an acetic acid aqueous solution with the acetic acid concentration of 1.5-3 percent, dripping a 10g/L of ion stabilizer agar solution, regulating the size of the chitosan colloid particles to be in a distribution range of 60-100nm, forming a uniform and stable acetic acid-chitosan colloid solution of which the colloid size is in a nanoscale, controlling the pH value to be 4-7, wherein the viscosity of the colloid solution is 2-60mPa.s. The method has good chitosan fixation effect, does not have harmful or chemical residues and is environment-friendly, high-efficiency, harmless to human bodies and rich in raw material source.

The invention discloses high-pressure-resistant sealing glass ceramic, which comprises the following main components: 60 to 75 parts of SiO2, 10 to 16 parts of Li2O, 2.0 to 5.5 parts of P2O5, 2.0 to 4.6 parts of Al2O3, 1.0 to 3.8 parts of K2O, 1.0 to 2.1 parts of B2O3, 0.5 to 1.5 parts of TiO2, 1.0 to 6.0 parts of ZnO, and 0.5 to 8.0 parts of ZrO2. The high-pressure-resistant sealing glass ceramic is prepared by the following steps: uniformly mixing the components; smelting the mixture for 4 to 6 hours in a molybdenum silicide high-temperature electrical furnace at 1,450 to 1,550 DEG C; afterthe mixture is molten and clear completely, pouring the mixture into cold water, and quenching and cracking into glass slag; and drying, ball milling, and screening to obtain high-pressure-resistant sealing glass powder. The high-pressure-resistant sealing glass ceramic is particularly suitable for sealing stainless steel, copper and Ni-based inconel ally, and a high-pressure-resistant sealing element is obtained by high-temperature sealing and heat treatment. The sealing glass ceramic disclosed by the invention has a higher sealing strength, a higher thermal expansion factor, higher chemicalstability and a higher mechanical strength, and the process is simple, practical and suitable for industrial production.

The invention relates to a niobium titanium aluminum alloy added with trace boron and a preparation method of the alloy, wherein 0.5-5% of boron measured by atomic percent is added in the niobium titanium aluminum alloy. The experiments prove that trace boron (0.5-5%) is added as grain refiner in high-temperature structure materials which contain 30-60% of niobium, 10-50% of titanium and 0-30% of aluminum so as to significantly refine grains and microstructures of the alloy, thereby increasing mechanical property of the alloy, strengthening, toughening and preventing alloy cracking. Main components of the alloy with component region of 0-60% of niobium, 10-50% of titanium and 0-30% of aluminum are beta/B 2 phases, so that the grain refining technology is effective for described component region. Processes for refining niobium titanium aluminum alloy structures with the preparation method provided by the invention are simple and practical, and simultaneously are capable of playing a role of strengthening and toughening the niobium titanium aluminum alloy.

The invention relates to a La-Ca-Mn/carbon nanotube dual-functional composite catalyst and preparation and application thereof. The catalyst comprises a composite of carbon nanotubes, nanometer lanthanum oxide, nanometer calcium oxide and nanometer manganese dioxide and is prepared according to the following steps of weighing lanthanum nitrate, calcium nitrate, a manganese dioxide precursor and the carbon nanotubes according to a mass ratio of 0.2:(0.16-0.4):0.1:(0-0.05) and dissolving the materials in ammonia water, carrying out ultrasonic dispersion, carrying out a hydrothermal reaction for 5 hours at 160 DEG C, cooling the obtained product to a room temperature, and carrying out washing, drying, calcinating and grinding. The invention also relates to the application of the dual-functional composite catalyst in preparation of an air electrode of a metal-air battery. The La-Ca-Mn/carbon nanotube dual-functional composite catalyst has the advantages of greenness, environmental friendliness, availability in raw material, low cost, moderate reaction condition, short reaction time, simplicity and practicability in process, high controllability and the like, is easy to produce in a large scale, and is a favorable air electrode catalyst which can be applied to the fields of metal-air batteries such as zinc-air, aluminum-air and magnesium-air batteries.

The invention discloses fried broad beans and a preparation method thereof. The fried broad beans are characterized by comprising the following raw materials in parts by weight: 100-120 parts of broad beans and main frying materials, wherein the main frying materials comprise 2-4 parts of soybean oil, 2-3 parts of ginger oil, 2-3 parts of scallion oil, 2-3 parts of garlic oil, 2-3 parts of aginomoto, 2-3 parts of edible salt, 0.5-1.5 parts of white sugar and 4-6 parts of mature vinegar. The preparation method comprises the following steps: a) frying the broad beans, namely, airing the broad beans, washing, soaking for 42-60 hours, washing, mechanically opening the broad beans, washing, boiling in water, mechanically centrifuging to remove the water, frying the broad beans by using a frying machine for 18-25 minutes, and fishing out the fried broad beans; b) preparing the frying materials, namely, weighing the frying materials according to a weight ratio; c) frying the broad beans; d) weighing and packaging the fried broad beans. The preparation method of the fried broad beans is advanced and practical, and the fried board bean produced by using the preparation method is unique in fragrance, good in taste, rich in nutrition and beneficial for sale in market.

The invention relates to a combined drilling technique of vegetable gum diamond coring and downhole hammer casing drilling, which can be used for effectively solving the problem that the requirements of practical engineering exploration cannot be met due to difficulty in forming holes, low core recovery rate, low drilling efficiency and more hole accidents in a sandy cobble stratum. The technical scheme for solving the problem includes that the technique includes the steps: leveling land; positioning and mounting equipment; forming an excavation circulating system; drilling holes; performing vegetable gum diamond coring; recycling flushing fluid; performing downhole hammer casing drilling; and discharging residues, lifting a drill, replacing the drill for drilling and supplementing vegetable gum flushing fluid into the holes. The technique is simple and practical, effectively solves the problems of difficulty in forming the holes, low drilling efficiency, low core recovery rate and more hole accidents in the sandy cobble stratum, and is innovative in terms of drilling techniques.

The invention discloses an electrochemical energy device and a manufacturing method thereof. The electrochemical energy device uses an alkaline anion exchange composite film as a solid electrolyte anda support layer, and the alkaline anion exchange composite film is a quaternized chitosan-polyvinyl alcohol film. The quaternized chitosan-polyvinyl alcohol film is a good all-solid-state electrolyte. A low-cost non-toxic material with high ionic conductivity at an ambient temperature is achieved and good mechanical strength and excellent electrochemical performance are possessed. The quaternizedchitosan-polyvinyl alcohol film is applied to the electrochemical energy device, a problem that a traditional electrolyte is easy to leak is solved, packaging difficulty is reduced, cost is saved toa certain extent, and the device and the method are suitable for industrial production.