1129results about How to "Reduce the number of replacements" patented technology

The invention discloses a super-high thermal conductivity and low thermal expansivity diamond composite material and a preparation method thereof, and belongs to the field of high-performance functional materials. The composite material consists of at least two phases of high thermal conductivity diamond grains and high thermal conductivity metals or alloy materials. The preparation method for the composite material comprises the following steps of: putting high thermal conductivity sheet or block metals or alloy materials on the high thermal conductivity diamond powder grains, loading, sealing, performing vacuum heat treatment, and performing melt infiltration sintering at certain high temperature under high pressure to make high thermal conductivity metals melted and infiltrated in the diamond grains so as to form the super-high thermal conductivity and low thermal expansivity composite material. The method makes high thermal conductivity nonmetal materials and high thermal conductivity metal materials firmly combined, so the composite material has the compactness of over 99 percent, and the thermal conductivity of 600 to 800W/(m.K); the thermal expansivity (less than 5ppm/K) matched with an electronic device can ensure that a workpiece works stably for a long time under the condition of high heating density; and the composite material has wide industrial application prospect.

The invention relates to a carbon fiber wetland type ecological floating bed and an arrangement method thereof, belonging to the field of sewage treatment. The carbon fiber wetland type ecological floating bed comprises a bed body, a biological carbon fiber material, floating bed plants and a wetland tank, wherein the wetland tank is arranged in the bed body; the interior of the wetland tank is filled with a porous light-weight artificial wetland filler; the floating bed plants are planted in the middle of the filler; and the biological carbon fiber material is hung on a suspension rod at the bottom of the wetland tank. According to the carbon fiber wetland type ecological floating bed, the processes of the ecological floating bed, bio-contact oxidation and the artificial wetland are reasonably combined to ensure that sewage is firstly subjected to bio-contact oxidation to degrade most pollutants, then the sewage is intercepted and further degraded through the wetland structure, and finally, through the absorption effect of plant roots, the quality of the sewage is better improve; and meanwhile, the reasonable layout of plants can be used for achieving the purposes of beautifying the environment, improving the ecological diversity and promoting the degradation effect on the pollutants of the whole floating bed system.

The invention relates to a metal/ceramic nano complex self-repairing additive, which comprises metal nano micropowder and nano natural ore powder as main material, detergent, catalyst, antioxidant, and solvent, and can be used in lube, grease and ultrasonic medium. The advantages of this invention include: it can form rapidly high-hardness self-repairing protection layer on a plurality of metal friction surfaces with thickness adjustable to optimize gap and improve surface physical and chemical property, and has wide application in friction dual parts.

The invention discloses a Byzantine fault-tolerant alliance chain consensus method and system for power consumption information protection and a storage medium, and the method comprises the steps thata blockchain node credit model is built, and a node with the highest credit is selected as a main node through the blockchain node credit model; the transaction initiator broadcasts transactions andpackages the transaction requests into blocks; the main node generates a proposal message from the block and signs the proposal message; after the slave node receives the proposal information, the legality of the proposal is verified, when the verification result is illegal, recording is carried out, the consensus is given up, and a view replacement protocol is initiated; the verified slave node enters a confirmation stage, executes the block transaction and replies a message to the client; and consensus is reached according to the node reply message condition received by the client, and eachnode executes block chaining. According to the method, the probability that the Byzantine node is the main node is reduced, so that the view replacement frequency is greatly reduced, and the system performance is effectively improved.

The invention relates to a hydrophobic silica aerogel heat-insulation composite material. The composite material consists of silica aerogel and an inorganic fiber product, wherein the silica aerogel is doped with a flame retardant and an infrared blocking agent; the inorganic fiber product comprises one or more of glass fibers, quartz glass fibers, aluminium silicate fibers, ceramic fibers, alumina fibers, zirconia fibers, rock wool fibers and basalt fibers, and the porosity of the inorganic fiber product is higher than 50%. The composite material has the overall waterproof performance, the extremely low heat conductivity coefficient and the excellent high-temperature heat-insulation performance, can pass an incombustibility test under the condition that the material is ensured to be hydrophobic as a whole, and reaches level A1 according to the incombustibility test; the preparation process is simple, the production cycle is short, the cost is lower, the equipment requirement is low, and reaction conditions are controllable.

The invention relates to preparation and an application of paint waste water treatment agents. The paint waste water treatment agents comprise viscosity reducing agent A and flocculants B, wherein the viscosity reducing agent A is aqueous solution, is formed by compounding organic bentonite, 6501 nonionic surface active agents and high-molecular polymers prepared from formaldehyde and three kinds of organic compounds: aniline, urea and starch through reaction, has high electric neutrality and can fast neutralize paint particle charges, so dope loses the viscosity. The flocculants B is aqueous solution, is formed by compounding sodium alginate aqueous solution, sodium lignosulphonate aqueous solution and chitosan modified cation polyacrylamide aqueous solution with the molecular weight being 8 to 12 million, has high coacervation effect and can gather paint particles losing the viscosity. The paint waste water treatment agents have good viscosity reduction and coacervation effects on water-soluble and fat-soluble dope. When the paint flocculants are applied to paint spraying waste water treatment, the agent A and the agent B are sequentially added into paint-containing circulating water, more than 90 percent of paint in the waste water can be cleaned.

The invention discloses a VOC (volatile organic compound) waste gas treatment system. The VOC waste gas treatment system sequentially comprises a fan, a padding spray tower device, an ultraviolet activated carbon integrated device and a purified gas discharge opening, wherein the fan is connected with a VOC waste gas source; the padding spray tower device is connected with an air outlet of the fan; the ultraviolet activated carbon integrated device is connected to an air outlet of the padding spray tower device; the purified gas discharge opening is connected to the ultraviolet activated carbon integrated device. Waste gas is treated efficiently by the design of combining the padding spray tower with the ultraviolet activated carbon integrated purifier. Firstly, the padding spray tower is used for spraying washing; organic waste gas is dissolved into a purifying liquid well by multi-surface hollow spheres; then air water of a defogging layer is matched to share efficiently, so that gas after primary treatment is obtained by the padding spray tower. The gas after primary treatment is treated by the ultraviolet activated carbon integrated purifier, and clean gas reaching the standard is discharged out. The size of the device is reduced; the waste gas treatment efficiency is high; the purification cost is reduced; the purification standard reaching effect is ensured.

The invention relates to a paint mist coagulant which has excellent adhesion eliminating and coagulating effects on water-soluble and fat-soluble paints and is particularly suitable for treating spraying paint waste water produced in a conventional coating process. The paint mist coagulant comprises an adhesion eliminating agent A and a floating agent B, wherein the adhesion eliminating agent A is a linear high polymer which contains a -NH- group and is generated by reacting an organic nitrogen-containing compound with aldehyde, has very high charge neutralization and can rapidly neutralize paint particle charge to make over 90 percent of paint lose adhesion within 1 to 10 minutes; and the floating agent B is solution which is formed by compounding an amide polymer having the molecular weight of between 9 and 10 million with modified sodium salt, has very strong coagulation and can aggregate paint particles which lose adhesion. When the paint mist coagulant is applied to treating the spraying paint waste water, the pH value of the waste water is adjusted to between 7 and 9 and the agent A and the agent B are added into paint-containing circulating water, so that over 95 percent of paint mist in the waste water is cleared.

The invention discloses an asynchronous graphic data processing system based on a GPU. The asynchronous graphic data processing system comprises achieving a combining coloring algorithm for changing an original single and heuristic coloring algorithm to the combining coloring algorithm; a data preprocessing strategy for changing an original preprocessing partition method based on a vertex degree to a mode based on vertex coloring distribution; and an asynchronous processing executing engine which changes the executing mode of a processing engine from a synchronous BSP mode to an asynchronous processing mode and achieve lockless asynchronous programming on the GPU in combination with a combining coloring algorithm module. In the asynchronous processing executing engine, an iteration processing module and a data flow executing module are achieved and the bandwidths and computing capabilities of a CPU and the GPU are managed and used in a unified manner. According to the graphic data processing system based on the GPU, the asynchronous processing executing engine may greatly accelerate graphic algorithm convergence and solve problems of synchronous waiting expense and asynchronous programming lock expense on the GPU so as to improve the graphic data processing capability of the GPU.

The invention relates to a hydroxyethyl chitosan fiber preparation method, including the following steps: (1)dispersing chitosan fiber in the mixed solvent of ethanol and isopropanol, adding aqueous alkali, maintaining the temperature of the system in the range of minus 10 DEG C to 20 DEG C, dipping for 5-120min and then basifying to produce basified chitosan fiber; (2)adding isopropanol solution of epoxy ethane into the above system and rising the temperature of the system to 30-70 DEG C, then etherifying for 0.5-8h, taking out of the fiber and dispersing the fiber in ethanol aqueous, adding acetic acid solution drop by drop until the mixture becomes neutral, then washing with ethanol, dehydrating through anhydrous ethanol, and finally airing in air. In this way, partially substituted hydroxyethyl chitosan fiber can be prepared. Hydroxyethyl chitosan fiber with liquid adsorption and liquid retention capabilities can be prepared by introducing hydrophilic hydroxyethyl groups to the chain of chitosan macromolecule. The hydroxyethyl chitosan fiber has potential application value on the treatment of serous wounds; the preparation method is simple, and the substitution degree is easy to control.

The invention belongs to the technical field of grinders, and relates to a full-automatic numerical control screw tap thread grinder. A rear support plate moving along a longitudinal slide rail is arranged at the rear side of a work table of a grinder base, a grinding wheel spindle is arranged at the front side of the rear support plate, driven by a power device to rotate and provided with a screw tap relief-grind grinding wheel, a sliding block moving along a vertical slide rail is arranged on the portion, located at the rear side of the grinding wheel spindle, of the rear support plate, and a diamond wheel is installed on a diamond rotating shaft arranged on the sliding block; a front support plate moving transversely is arranged at the front side of the work table, a swing tray is hinged to the front support plate, an indexing workpiece clamp is arranged at one side of the swing tray, a tailstock centre moving along a transverse slide rail is arranged at the other side of the swing tray, a swing shaft driven by the power device to rotate and a cam installed on the swing shaft are hinged to the front side of the front support plate, and actions of the power device are controlled by a controller program. The full-automatic numerical control taped thread grinder has the advantages that the screw tap relief-grind grinding wheel is high in finishing accuracy, clamping frequency is reduced, the accuracy and efficiency of screw tap machining are improved, and the grinder is applicable to the field of full-automatic numerical control screw tap thread grinders.

At present, a bit tooth is prepared from an alloy-structure steel material; because the alloy-structure steel has low rigidity and is not wear-resistant, a hard alloy cylindrical tooth is broken and falls off early; the service efficiency of the precious hard alloy cylindrical tooth is only 30 percent, and the waste is great; a diamond cylindrical tooth prepared from a superhard material has higher requirement on wear resistance of the bit tooth; the upper end of the bit tooth is provided with a hard alloy sleeve to solve the problem of low wear resistance, but the hard alloy sleeve is broken after being impacted, and cannot protect the diamond cylindrical tooth; moreover, the hard alloy sleeve is high in price and the waste is great. The invention adopts a technical scheme that: a novel-structure wear-resistant bit tooth is characterized by consisting of a bit tooth made of alloy-structure steel, and a wear-resistant body at the upper end of the bit tooth made of the alloy-structure steel, wherein the wear-resistant body is made of die steel or high-speed steel. The hard alloy cylindrical tooth or diamond cylindrical tooth can be effectively protected; and the novel-structure wear-resistant bit tooth is widely applied to coal mines, metallurgy and tunnel engineering.

The invention discloses a wireless body area network security access method. Two interaction modes, namely, the unicast mode and the multicast mode, are set; two launching modes are set, and in other words, a network coordinator launches hand shaking and sensor nodes launch hand shaking; thus, when a certain part is injured and the blood pressure suddenly rises or in other words, the measurement indexes of a certain or some sensor nodes exceed the corresponding index limitations, the corresponding sensor nodes actively launch the hand shaking process, the situations of patients are rapidly fed back to medical staff, and patients are helped in time. According to the method, dynamic negotiation of a user conversation key is achieved through enhanced four-step hand shaking, hand shaking information is reduced, all the information is encrypted, the unicast access mode and the multicast access mode are set, and the remote access problem is solved through a multi-hop method. The method has the advantages that the access efficiency of a large number of sensing nodes is high, security is high, and the energy consumption is low, and the method can be used for the access of the sensing nodes in a wireless body area network and the dynamic negotiation of the user conversation key.

The invention provides an ecological carbon-fiber composite, a preparation method thereof and a sewage treatment reactor containing the ecological carbon-fiber composite. The ecological carbon-fiber composite comprises a core layer which is composed of biologically active carbon fibers with a specific surface area of greater than 1000 m<2>/g and an external layer which is composed of an eyelet fabric of polypropylene fibers, wherein the external layer is wrapped around the core layer. According to the invention, the biologically active carbon fibers with a specific surface area of greater than 1000 m<2>/g are used as the core layer, and the polypropylene fiber eyelet fabric is arranged at the external side of the core layer so as to strengthening the core layer; therefore, the ecological carbon-fiber composite has the advantages of a great specific surface area, reasonable pore size distribution, high adsorptivity and high strength, so the composite is sturdy and durable, is convenient to clean and maintain, does not easily hide sludge, enables replacement frequency to be reduced and has a prolonged service life.

The invention discloses a curved surface laminating jig and laminating equipment, relates to the technical field of curved surface lamination and aims to solve the problem of relatively high use costof the curved surface laminating jig as a flexible cavity wall in an upper jig in a curved surface laminating jig in the related art is easy to break. The curved surface laminating jig comprises a stand, a supporting table, an upper jig, a lower jig and a driving device, wherein the lower jig is arranged on the supporting table; the lower jig is provided with a placement cavity with a placement opening; the upper jig comprises a press-fit cavity; the press-fit cavity comprises a first sub cavity encircled by a rigid cavity wall and a second sub cavity encircled by a flexible cavity wall; the first sub cavity is provided with a first downward opening, and the second sub cavity is provided with a second upward opening; the second opening is hermetically abutted with the first opening; fluidis fed into both the first sub cavity and the second sub cavity; under the driving of the driving device, the supporting table and the upper jig can move relatively in a vertical direction. The curvedsurface laminating jig disclosed by the invention can be used for laminating a flexible panel and a curved cover plate.

The invention provides a sulfur recovery technology realizing low sulfur emission. The sulfur recovery technology comprises a combustion furnace, a first-stage Claus reactor, a second-stage Claus reactor, a selective hydrogenation reduction reactor, a selective oxidation reactor and two adsorption desulfurization towers capable of being connected in series or parallel, and the devices are sequentially connected in series; the total sulfur conversion factor of process effluent gas is that SO2 is smaller than or equal to 10 mg/m<3> through proper selection of various catalysts and desulfurizers and accurate control of process conditions of steps. The desulfurizers after breakthrough are subjected to in-situ thermal regeneration by inert gas at the temperature of 250-300 DEG C, regenerated outlet gas returns to the combustion furnace, a condenser I behind the combustion furnace, a condenser II behind the first-stage Claus reactor, a condenser III behind the second-stage Claus reactor, a condenser IV behind the selective hydrogenation reduction reactor or a condenser V behind the selective oxidation reactor, sulfide such as elemental sulfur, H2S,SO2 and the like in the regenerated gas is recovered, and the total sulfur conversion factor of exhaust tail gas in the regeneration period of the desulfurization towers is that SO2 is smaller than or equal to 10 mg/m<3>. The sulfur recovery technology realizing low sulfur emission has the advantages of the low sulfur emission, the long-term operation of the desulfurizers, the high desulfurization capacity, the small number of replacement times, the low expenses and the like.

The invention discloses a drying agent for an mine underground electric apparatus and a preparation method of the drying agent, belonging to the field of drying agent, wherein macromolecule water absorbent, compound of silicon or calcium and alkali halide or modified starch are mixed so as to prepare the powdery draying agent according to part by weight; the macromolecule water absorbent is 35-70 parts; the compound of silicon or calcium is 25-55 parts; the alkali halide or a mixture of the alkali halide and the modified starch is 10-15 parts; the grain size of the macromolecule water absorbent is 0.20-0.40mm; and the drying agent is powdery. According to the invention, raw material is wide in source and is purchased easily on the market; the drying agent is used for high/low-voltage power supply appliances worked on a mine underground high-humidity condition (RH=80-100%); the dry powder resists 6000V voltage or does not be broken down under voltage of 3000V; when moisture rate reaches to 1g/g, the dry powder resists 2500V voltage or does not be broken down under voltage of 1200V.

The invention relates to an aircraft tyre driver with an energy recovery function. Because an aircraft lands and is braked, kinetic energy of a tyre is consumed by the friction between a dynamic brake disk and a static brake disk, a large amount of energy is wasted. The aircraft tyre driver mainly comprises a fixing ring, a rectifier, a storage battery, a rectifying line, a charging line, a motor and a friction wheel, wherein the storage battery supplies power to the motor when the aircraft lands so as to drive the friction wheel to drive the tyre to rotate, and thus the speed difference between the tyre and the ground is reduced, and the abrasion loss of the tyre is reduced. The aircraft tyre drives the friction wheel to rotate during speed reducing and rotating on a runway, the friction wheel drives the motor to charge the storage battery, and therefore, the kinetic energy during the braking can be reasonably and fully recycled, the abrasion between a dynamic disk and a static disk in an aircraft wheel brake device is reduced, the time required from the braking to the stopping of the tyre is shortened, and the charging and the power supplying of the storage battery can be finished in a circulating process.

The invention relates to a method for preparing a kbac beverage. The method comprises the following steps: adding water into a saccharifying tank, heating to be 35 DEG C, adding breadcrumbs, uniformly stirring, adding malt flour, heating to be 65 DEG C, adding alpha-amylase, heating to be 90 DEG C, stopping stirring, heating to be 100 DEG C, keeping the temperature for 20 minutes, cooling to be 52 DEG C, adding beta-glucanase, neutral protease and malt flour, keeping the temperature for 70 minutes, heating to be 60 DEG C, adding saccharifying enzyme, heating to be 63 DEG C, keeping the temperature for 40 minutes, heating to be 68 DEG C, keeping the temperature for 20 minutes, heating to be 78 DEG C, standing for 60 minutes to obtain a saccharification liquid, and filtering to obtain supernate. On the basis that the kbac fermented beverage prepared by using the method provided by the invention does not affect the original rich nutrition and health value, the biologic stability of a product is greatly improved, and the product is better in stability and taste within the expiration date. The product stability is that the nutrient substance can be separated for 180-200 days increased from 3-40 days.

The invention provides a material and a structure of a crust-hitting hammer head for an aluminum reduction cell and a casting technique thereof. The hammer head is prepared from rare earth high-chromium cast iron, and comprises the following components in percentage by weight: 1.5-2.5 percent of carbon, 0.5-1.5 percent of silicon, 0.20-1.5 percent of manganese, 25.0-35.0 percent of chromium, less than 0.05 percent of phosphorus, less than 0.05 percent of sulfur, 0.075-0.10 percent of mixed rare earth, not more than 1 percent of other impurities and the balance of iron. The crust-hitting hammer head has the structure that a steel pipe is cast in a hammer head body, and the front segment of the steel pipe and the hammer head body are cast into a whole, wherein a connection reinforcing hole is arranged at the front segment of the steel pipe; a common part of the middle segment of the steel pipe and the hammer head body forms a segment of hollow cavity; and the part of the steel pipe extending out of the chip body and a crust-hitting rod are sleeved and then fixed together through ring welding and notched welding. The technique adopts a top casting or side casting method. The crust-hitting hammer head has the characteristics of heat resisting property, corrosion resisting property, wear resisting property, light weight, falling prevention, strong technological adaptability, easy production and the like.