104results about How to "Quick breakdown" patented technology

A strip steel surface defect area dimension measurement method relates to a defect dimension measurement method, and comprises the following steps: calibrating a camera coordinate system, and shooting a strip steel surface image by using a camera; identifying defects on the surface of the strip steel in the image by using a defect identification model, dividing a defective area in the image, measuring the size of the defective area, and calculating the actual size of the defective area according to the coordinate conversion relation; the defect identification model is based on YOLOv8s, a linear focusing attention mechanism is fused into a C2F module of a backbone network to form a C2F-FLA module, global features of an image are concerned, and more defect related features are captured; a bidirectional weighted feature pyramid network structure is adopted in the Neck network part, and a wavelet convolution module is utilized to respond to low-frequency information in the image; and performing down-sampling by adopting a Haar wavelet down-sampling module. The feature extraction capability is improved while the model parameter quantity, the large calculation amount and the calculation complexity are reduced, so that the detection result is more accurate.

The invention relates to a soil conditioner for saline-alkali land treatment and a preparation method, and belongs to the technical field of soil conditioners. The soil conditioner for saline-alkali land treatment is prepared from a fermented fertilizer, biomass charcoal II, corn straw powder, attapulgite powder, humic acid and a compound microbial agent. The soil conditioner disclosed by the invention can be used for reducing the pH value of soil, reducing salinity, promoting the recovery of organic matters and improving the fertility of the soil, and is beneficial to improving the yield of crops.

The invention belongs to the technical field of virtual power plant instruction decomposition, and particularly relates to a virtual power plant dispatching instruction rapid decomposition method based on multiple agents. According to the method, the change and demand fluctuation of the power system can be more flexibly coped with, the compensation value is calculated based on the historical data and the current state of the intelligent agent, reasonable distribution and optimal use of system resources, loads and power are ensured, the overall operation efficiency of the virtual power plant is improved, and through the setting of the instruction decomposition level, the operation efficiency is improved. Task allocation of the intelligent agents can be dynamically adjusted according to actual conditions, overload of a single intelligent agent is avoided, execution efficiency of scheduling instructions is improved, high-energy-consumption tasks can be preferentially arranged when power is low by combining current power data, or generating capacity and operation cost are reduced when the power is high, economic benefits are improved, and the method is suitable for large-scale popularization and application. Compensation value calculation and decision making are carried out by utilizing historical data of the intelligent agent, so that the scientificity and accuracy of dispatching instruction decomposition are improved, and the influence of uncertain factors in the dispatching process is reduced.

A comprehensive regulation and control method suitable for improvement of a coastal mud flat severe saline-alkaline dry land comprises the steps that firstly, the area of a field needing to be improved and the soil salinity are measured, the use amount of acid volcanic rock debris and the use amount of high-fiber fermented wood chips are calculated, the application amount of the acid volcanic rock debris is 6-10 cubic meters / mu, and the use amount of the high-fiber fermented wood chips is 85-150 kg / mu; secondly, when the soil salinity is gt; when 0.8%, canal irrigation tube row is combined for concealed tube salt elimination, and the salt is reduced to about 0.4%; thirdly, uniformly scattering acidic volcanic rock debris and high-fiber fermented sawdust into the severe saline-alkali soil, then ploughing the field with the ploughing depth of 5-20 cm, uniformly mixing the field with soil, and then planting and cultivating dry farming crops to complete comprehensive regulation and control.

The invention belongs to the field of hangover alleviating and liver protecting products, and particularly discloses a preparation method of a quick hangover alleviating and liver protecting drink, the drink is prepared by compounding a chamomile extract and a plurality of plant raw materials (dandelion, fingered citron, hovenia acerba and the like), and the chamomile extract is extracted by a special process. The preparation method comprises the following steps: firstly, soaking and cooking part of the raw materials, and then crushing, soaking and extracting the other part of the raw materials; mixing the liquids obtained in the steps, adding the rest raw materials, soaking, extracting and mixing; and finally, adding the chamomile extract, uniformly mixing, pasteurizing and canning. The beverage adopts fresh plant raw materials, pressure and temperature control is emphasized in the preparation process, and the quality and the effect are ensured. The process is simple, efficient and suitable for industrial production, the prepared beverage has remarkable sobering-up and liver-protecting effects, and the healthy and effective sobering-up and liver-protecting beverage can be obtained by people.

The invention relates to a method for treating ammonia-nitrogen wastewater based on photocatalysis and ozonation coupling, and belongs to the technical field of wastewater treatment.The method comprises the following steps that S1, early-stage preparation is conducted on wastewater treatment; s2, photocatalytic ozone oxidation coupling treatment; s3, wastewater effluent treatment; s4, regeneration and recovery of the catalyst; and S5, monitoring the effluent quality of the wastewater. According to the method for treating the ammonia-nitrogen wastewater based on photocatalysis and ozonation coupling, the ammonia-nitrogen wastewater is treated by adopting the wastewater treatment method, so that the degradation efficiency of ammonia nitrogen can be effectively improved, and ammonia nitrogen components in the wastewater can be more effectively removed; in the photocatalytic reaction process, pollutants are decomposed into harmless substances, so that the problem of secondary pollution is avoided; in the ozone oxidation process, ozone can be quickly decomposed, the influence on follow-up treatment facilities is reduced, meanwhile, light energy is utilized in the photocatalytic reaction, the advantages of energy conservation and environmental protection are achieved, and the advantages of efficient degradation, no secondary pollution, energy conservation and environmental protection are achieved.

The invention belongs to the technical field of fault diagnosis, and particularly relates to a gearbox fault diagnosis method and system based on cyclic pulse characteristic decomposition, and the method comprises the steps: constructing a new dictionary matrix, namely a cyclic pulse dictionary matrix, to accurately estimate a pulse cycle period contained in a signal formed by mixing a plurality of periodic pulse signals; a Goertzel algorithm is adopted to obtain corresponding frequency amplitudes according to the magnitude sequence of the energy values of the pulse cycle periods; and separating and reconstructing the CPCC corresponding to the pulse cycle period, and decomposing the signal into a plurality of CPCCs. According to the invention, the cyclic pulse dictionary matrix is constructed to carry out sparse representation on the pulse cycle period of the periodic pulse signal, and the cycle period of the fault pulse characteristic in the gear vibration signal is accurately estimated; the Goertzel algorithm is adopted to decompose and reconstruct the CPCC in the gear vibration signal according to the pulse cycle period, and the decomposed CPCC contains abundant periodic pulse characteristic information.

The utility model relates to the technical field of formaldehyde removal, and discloses a photocatalyst-based multi-stage formaldehyde removal device which comprises a treatment box, a filter window is arranged on one side of the treatment box, a filter screen is mounted in the treatment box, two sliding columns are fixedly connected to the upper portions of the two sides of the filter screen, springs are mounted on the outer walls of the sliding columns, and the outer walls of the sliding columns are fixedly connected with the filter screen. One ends of the springs are fixedly connected to the upper portions of the two sides of the filter screen, and mounting blocks are mounted on the upper portions of the two sides of the filter screen. According to the utility model, the pushing block is pushed to enable the mounting block to slide on the sliding column, the spring is compressed, and the two fixing blocks are driven to be close to each other, so that the fixing blocks can be separated from the first mounting groove, and the fixing blocks can be reset to enter the first mounting groove under the action of the spring when the pushing block is loosened; therefore, the filter screen can be quickly disassembled and assembled, the filter screen can be conveniently cleaned, and the working efficiency and the performance stability of device operation are effectively improved.

The invention provides a cat litter additive, a preparation method and application thereof, cat litter and a preparation method thereof, and relates to the field of pet supplies. The preparation method of the cat litter additive comprises the following steps: sequentially spraying a persulfate solution and a stabilizer solution on inorganic silica gel, and then drying under the conditions of vacuum negative pressure and 15-80 DEG C to obtain the cat litter additive, wherein the concentration of the persulfate solution is 1 wt%-40 wt%. The effective loading capacity of persulfate in the cat litter additive is high, the excellent adsorption performance of the inorganic silica gel and the characteristic that the persulfate decomposes organic matter are combined, odor molecules can be rapidly adsorbed, the odor molecules make contact with the persulfate in pores of the inorganic silica gel to be decomposed, and therefore odor is eliminated, and the situation that odor rebounds is avoided. The cat litter containing the cat litter additive is simple in preparation method, and odor generated by pet excrement can be quickly and stably eliminated.

The invention belongs to the technical field of resin polymerization additives, and particularly relates to an antioxidant type suspended emulsion terminator for PVC (polyvinyl chloride) and a preparation method thereof, the antioxidant type suspended emulsion terminator comprises the following raw material components in parts by mass: 5-30 parts of phenolic antioxidant; 5 to 20 parts of a thioester antioxidant; 0.1-5 parts of an ultraviolet light absorber; 0.1 to 5 parts of a chain terminator; 1-10 parts of a heat stabilizer; 0.1 to 7 parts of a stabilizer; 0.1 to 5 parts of an emulsifier; 0.1-5 parts of a wetting dispersant; according to the invention, through the combination of the selected main and auxiliary antioxidants and the combination of the ultraviolet light absorber and the heat stabilizer, the defect structure of PVC is improved at the end of PVC polymerization, and meanwhile, the combination of the main and auxiliary antioxidants can quickly decompose peroxide and hydroperoxide at the later stage of processing; compared with the prior art, the whiteness and thermal stability of PVC in the early stage are good, the anti-yellowing effect and the long-term aging resistance of PVC in the later processing are more emphasized, the performance of PVC in the dynamic thermal stability is improved, and the volume impedance and the initial coloring are low.

The invention relates to the field of soil improvement, and particularly discloses a soil improvement method for coastal saline-alkali soil. According to the method, a physical method and a biological method are comprehensively utilized for comprehensive treatment of the saline-alkali soil, the large drainage ditch communicated with the surrounding river channel is dug for discharging salt into the river channel, the soil tank and the salt drainage ditch are dug, the plastic permeable blind pipe wrapped with the non-woven fabric is placed in the salt drainage ditch, the salt drainage ditch is backfilled with gravel, and the soil tank is backfilled with planting soil; organic compound fertilizer is evenly sown on the surface of the improved area, after long-time natural rainfall and manual watering, flowing water dissolves salt and alkaline substances in planting soil to form saline-alkaline water, and the saline-alkaline water flows into the plastic permeable blind pipe through the gravel layer and is finally discharged into the large drainage ditch to flow into the river channel. Salt and alkaline substances in the soil above the salt elimination ditch are effectively reduced, the wet soil promotes rapid decomposition of organic fertilizer and effective removal of salt, the improvement time of the saline-alkali soil is effectively shortened, and a good improvement effect can be maintained for a long time.

The invention provides a blood purification adsorbent and a preparation method thereof, the blood purification adsorbent takes macroporous resin containing an epoxy group as a carrier, the epoxy group on the carrier reacts with polyethyleneimine, the polyethyleneimine is immobilized on the carrier, the polyethyleneimine is taken as a spacer arm, and the epoxy group on the carrier reacts with the polyethyleneimine to prepare the blood purification adsorbent. Superoxide dismutase and lipoic acid are connected to the spacer arm through a dehydration condensation reaction, so that the superoxide dismutase and the lipoic acid are immobilized on the carrier. The blood purification adsorbent can remove superoxide, free radicals and inflammatory factors at the same time, and can effectively improve oxidative stress and microinflammation states.

The invention relates to a wet type multifunctional dust suppressant for a coal mine and a preparation method thereof. The wet type multifunctional dust suppressant consists of a component A and a component B, wherein the component A is prepared from surfactants such as AP470Z, Tween-80, Dow TRITON CF-10, Yinhuo Dynol 607 and Digao TEGO245, as well as glycerol, a de-foaming agent and industrial water; the component B is prepared from pregelatinized cassava starch, high-viscosity yellow dextrin, sodium carbonate, potassium carbonate, sodium hydroxide, industrial water and the like. And uniformly mixing the component A and the component B according to a mass ratio of 1: 1 to prepare the wet type multifunctional dust suppressant for the coal mine. The wet type multifunctional dust suppressant for the underground coal mine has obvious effects of reducing coal and rock dust and removing hydrogen sulfide gas, and is excellent in comprehensive performance, convenient to produce and simple to use. The dust suppressant can also be used for dust prevention and dust falling in the fields of roads, sand fields and the like, the dust suppressant can be sprayed to underground roadways and working faces prone to generating dust, the dust suppressant can rapidly permeate into oily pulverized coal, the pulverized coal is coagulated and settled, meanwhile, hydrogen sulfide gas in air and coal rock masses can be decomposed, and the purposes of dust falling and hydrogen sulfide gas removal are achieved.

The invention relates to the technical field of soil remediation, and discloses a soil remediation device and a soil remediation method.The key point of the technical scheme is that the soil remediation device comprises a remediation box body; the repairing platform is arranged in the repairing box body, a heating part used for generating heat is arranged at the bottom of the repairing platform, and the repairing platform conducts the heat; the feeding hole is formed in one side of the repairing box body and is connected with a feeding machine; the preheating box body is arranged in the repairing box body, and a plurality of crushing rollers are arranged in the preheating box body; the vibration frame body is arranged at the bottom of the preheating box body, and a plurality of release plates are arranged in the vibration frame body; according to the device, the problems of blockage and low efficiency when high-water-content or high-viscosity soil is treated in a traditional technology are solved by optimizing multiple functions of preheating, crushing, vibrating, releasing, paving and the like. The device is reasonable in structural design, efficient in treatment process and capable of being widely applied to pollution remediation of various complex soil environments.

The utility model relates to the technical field of fracturing fluid waste water treatment, and discloses an oil field fracturing fluid waste water treatment device which comprises a waste water treatment device, a cover plate and two observation plates. The two observation plates are located on the left side and the right side of the wastewater treatment device respectively and fixedly connected with the left side and the right side of the wastewater treatment device, and the observation plates are made of transparent materials. The problems that chemical substances contained in the oil field fracturing fluid wastewater need to be treated in the process of treating the oil field fracturing fluid wastewater through a wastewater treatment device, but the wastewater treatment device is not provided with a device capable of rapidly and fully mixing the chemical agents with the oil field fracturing fluid wastewater are solved; therefore, the treatment efficiency of the oilfield fracturing fluid wastewater is reduced, and the use by a user is inconvenient.

The invention discloses a composition for improving basic metabolism during low-carbon diet, and belongs to the technical field of food. The composition is prepared from the following components in parts by weight: 0.01 to 0.5 part of opuntia ficus-indica juice powder, 0.01 to 0.5 part of guarana extract, 10 to 50 parts of virgin coconut oil microcapsule powder, 1 to 10 parts of medium chain triglyceride microcapsule powder, 0.1 to 1 part of grape seed extract, 0.01 to 0.1 part of potato extract and 0.1 to 1 part of pomegranate extract. The composition can effectively improve the basal metabolic rate during a low-carbon diet period at a lower dosage. According to the innovative combination mode, the basal metabolic rate is increased, the problem of insufficient energy possibly occurring in the low-carbon diet period is relieved, and side effects and cost increase possibly caused by addition of high-dose plant extracts are avoided.

The utility model relates to a double-hearth shaft kiln with an auxiliary nozzle. The auxiliary nozzle comprises a bottom nozzle and a channel nozzle, the two bottom nozzles are installed on supporting seats arranged in the centers of the bottoms of the two kiln chambers respectively, and spraying openings of the bottom nozzles extend to the bottom of the roasting zone. The multiple channel nozzles are installed on the top and the side portion of the center position of the connecting channel respectively. The working mode that a traditional double-hearth shaft kiln carries out full parallel flow roasting in a roasting kiln hearth and carries out countercurrent heat storage in a heat storage kiln hearth, namely the working mode of'full parallel flow roasting and countercurrent heat storage 'is changed into the working mode that parallel flow roasting is carried out in the roasting kiln hearth and countercurrent roasting and heat storage are carried out in the heat storage kiln hearth. The two-way roasting working mode of parallel-flow roasting, counter-flow roasting and heat storage is adopted, cooling air participates in combustion supporting, then a low-temperature airflow area where roasting belt materials of a heat storage kiln chamber are cooled is eliminated from the source, and the productivity and the product quality are improved.

The invention provides an efficient continuous oily sludge pyrolysis device and method, the efficient continuous oily sludge pyrolysis device comprises a pyrolysis assembly (10), and the pyrolysis assembly (10) comprises a first-stage pyrolysis reactor (100), a second-stage pyrolysis reactor (101) and a third-stage pyrolysis reactor (102) which are sequentially communicated from top to bottom. By introducing the continuous pyrolysis design, the downtime is shortened, the treatment efficiency of the oily sludge is remarkably improved, and the requirement for large-scale oily sludge treatment is met; the design of bottom combustion gas heating and top feeding is adopted for the pyrolysis reactor, so that a high-low temperature area is effectively formed, the pyrolysis temperature gradient is enhanced, rapid decomposition of the oily sludge is promoted, the heat utilization rate is increased, and the heat loss is reduced.

The invention discloses a box and tent combined type disinfection device capable of being rapidly deployed and a using method thereof.The box and tent combined type disinfection device comprises a movable seat, a disinfection machine, a catalytic filter and a fan are arranged at the top end of the movable seat, a storage bag is arranged at the top end of the movable seat, the outer side of the storage bag is wrapped with a protective cover, and the protective cover is in a cube shape with the length, width and height being 1-1.2 m; the protective cover is connected with the top surface of the movable seat, the sterilizer comprises a shell, a power input interface and an external control circuit interface are formed in the outer side of the shell, a transmission antenna is further arranged on the outer side of the shell, a touch screen is arranged on the surface of the shell, and an inflation and deflation assembly, a sterilization assembly and a catalysis assembly are arranged in the shell; the storage capacity of the box body and the high unfolding and folding ratio characteristic of the tent are fully utilized, and when the tent is folded and stored, the equipment is a single box body; after the tent is unfolded, the sterilizer in the box body and the tent supported by inflation are combined to form fumigation disinfection capacity, and the space volume of the unfolded tent is about 20 times that of the folded tent. Therefore, the method has a quick response capability for coping with biological hazard events.

The utility model discloses a core taking machine for processing optical lenses, which comprises a core taking machine body, a shell and a transparent cover plate, the transparent cover plate is positioned on the surface of the shell, and a water injection component for injecting water into the transparent cover plate is mounted in the shell; a water injection assembly is arranged in the shell, a cleaning assembly used for being matched with the water injection assembly to clean the transparent cover plate is arranged in the shell, and one end of the cleaning assembly is communicated with one end of the water injection assembly. Long-term accumulation of stains on the transparent cover plate is avoided, the transparency of the transparent cover plate is effectively recovered, and an operator can more clearly observe the processing condition of a lens in the core taking machine, so that the transparency of the transparent plastic plate is improved, the service life of the transparent plastic plate is prolonged, the replacement frequency caused by residual stains is reduced, and the production efficiency is improved. And the production cost is reduced.

This application discloses a seaweed oligopeptide fertilizer for promoting root growth and seedling development, and its production process, belonging to the field of fertilizer technology. The fertilizer, by weight, comprises: 2-10 parts seaweed oligopeptide complex, 1-8 parts seaweed extract, 10-30 parts compound amino acids, 1-10 parts blueberry pomace, 20-50 parts oxytetracycline waste decomposition products, and 30-60 parts recycled organic matter from kitchen waste. By combining seaweed oligopeptides with chitosan to form a complex, the stability of the active ingredients is improved; simultaneously, the synergistic utilization of oxytetracycline fermentation waste, kitchen waste, and blueberry pomace achieves resource utilization. Experiments show that this fertilizer significantly promotes crop root growth and seedling development.

The invention belongs to the field of soil improvement, and particularly relates to composite rice husk charcoal for improving soil and a carbon sequestration and sequestration method, rice husks are used for preparing rice husk charcoal, then the rice husk charcoal is mixed with calcium bicarbonate, and then calcination is performed to obtain calcified rice husk charcoal; and carrying out alkali treatment on the calcified rice husk charcoal to obtain the carbon sequestration and sink increase composite rice husk charcoal. The composite rice husk charcoal can effectively reduce the salt content and density of soil, increase the content of organic matters, effectively improve salinized soil, improve the survival rate and growth vigor of forest trees and promote the growth of young forests.

This invention discloses a refrigerator and its control method and refrigeration system. The refrigerator includes at least a low-oxygen preservation system and a sterilization system. The control method includes: when the refrigerator door is closed, detecting whether the refrigerator has activated an oxygen reduction mode; if so, activating the sterilization mode for a first preset time when the time interval since the last activation of the sterilization mode reaches a first threshold time; if not, activating the sterilization system for a second preset time when the time interval since the last activation of the sterilization mode reaches a second threshold time. Compared with the prior art, this invention can achieve rapid ozone accumulation in a short time through oxygen-enriched gas, reducing the operating time of the ion generator, and after the sterilization mode ends, accelerating ozone decomposition through oxygen-enriched gas to reduce the ozone presence time, thus realizing closed-loop control of oxygen-enriched gas reuse, instantaneous high-concentration ozone sterilization, and rapid ozone decomposition.

The invention provides a fiber multilayer composite air filtering material and a preparation method thereof. The fiber multilayer composite air filtering material comprises a fiber base material, a metal catalyst is loaded on the fiber base material, the surface of the fiber base material is covered with a nanofiber membrane, the fiber base material is composed of alkali-treated bamboo fibers and polymer fibers, and the nanofiber membrane contains an antibacterial agent and a silane coupling agent. The fiber multilayer composite air filtering material has the advantages of high catalyst loading capacity, excellent filtering efficiency, good mechanical strength and toughness and the like, the raw materials are wide in source, the process is simple and environment-friendly, and a new way is provided for development of multifunctional air filtering materials. The invention also provides a preparation method of the fiber multilayer composite air filtering material.

The application relates to the technical field of grass-proof cloth processing, in particular to a degradable and long-service-life grass-proof cloth and a preparation method thereof, which is prepared from the following raw materials in percentage by weight: 50-70% of polylactic acid, 1-3% of a modifier, 0.5-1% of a plasticizer, 2-5% of a monoacylglyceride, 5-10% of starch, and the rest of porous fillers, wherein the modifier is obtained by mixing fatty acid polyoxyethylene ester, sulfonated lignin salt and hydroxyethyl methacrylate. The grass-proof cloth prepared through the above-mentioned formula has excellent degradability, strong mechanical properties and weather resistance, so that the grass-proof cloth can maintain stable performance for a long time, thereby prolonging the service life.

This utility model relates to the field of duckweed containment technology in waterways, and discloses a containment rope float suitable for fish spawning. It includes a containment rope made of first bundled reed stalks, with several reed balls made of second bundled reed stalks evenly distributed on the containment rope; each reed ball is filled with palm leaves; both ends of the containment rope are secured with ropes, and the other end of each rope is secured with a ground stake inserted into the riverbank. The advantages of this utility model compared to existing technologies are: it can contain duckweed on the water surface; the containment device decomposes quickly after disposal, does not pollute the environment, and provides a breeding environment for fish.

The invention belongs to an important constituent part in the field of circular economy and environmental protection, and particularly relates to a compound deodorizing and sterilizing agent for a waste incineration plant and a preparation method of the compound deodorizing and sterilizing agent. The compound deodorizing and sterilizing agent is prepared from the following raw materials: natural cedar wood alcohol dew, eucalyptus oil, polyhexamethylene biguanide, alkyl dimethyl benzyl ammonium chloride, didecyl dimethyl ammonium chloride, nano polymerized quaternary ammonium salt, propylene glycol and a solubilizer. The main raw materials of the compound deodorizing and sterilizing agent are positively charged, and viruses and bacteria are carried on negatively charged dust for drifting; when air is disinfected, the positive charges actively adsorb viruses and bacteria; the compound deodorizing and sterilizing agent is sprayed on the surface of an object in a mist form to form a layer of film, and the film tightly wraps the adsorbed viruses and bacteria to inactivate the viruses and bacteria. The natural cedar wood alcohol dew is organically combined with the high-molecular polymer polyhexamethylene biguanide, the nano polymeric quaternary ammonium salt and other components, so that the odor of organic matters can be continuously and effectively fused and removed, and the purpose of purifying soil, water sources and air is achieved.

The utility model provides a pest control device for forestry seedling raising, which comprises a surface plate, a detachable dome cover arranged above the surface plate, a dissolving box arranged below the surface plate, a lifting hook arranged above the surface plate and used for pulling out the whole control device from soil, a mounting groove arranged on the surface plate, and a mounting groove arranged on the mounting groove. The dome cover is arranged in the mounting groove, the pest control device attracts pests through pheromones, a citric acid dissolving solution is used for promoting rapid decomposition of pest corpses, effective control over the pests is achieved, the combination of the sticky hair and the dissolving solution ensures that the pests are rapidly captured and decomposed, and the organic acid decomposition process of citric acid is efficient and environmentally friendly. In addition, organic substances of the pest corpses are finally released into the soil, nutrition is provided for the soil, cyclic utilization of resources is achieved, and ecological balance is kept.

The invention discloses an oil pipe decomposition device, relates to the field of aero-engines, and is used for realizing rapid and lossless disassembly of an oil supply pipe. The oil pipe decomposition device comprises a mounting base, a shear fork mechanism, a first top plate, a second top plate and a driving mechanism. The shear fork mechanism comprises a first connecting piece and a second connecting piece, and the first connecting piece and the second connecting piece are arranged in a crossed mode. The first top plate is mounted on the first connecting piece; the second top plate is installed on the second connecting piece. And the driving mechanism is mounted on the mounting seat and is in driving connection with the shear fork mechanism so as to change the angle of the shear fork mechanism. According to the technical scheme, the oil pipe decomposition device is very small in size and can be placed at any narrow position of a pipeline gap, the complex environment where an oil supply pipe on an interstage casing is located is considered, horizontal movement of the driving mechanism can be converted into vertical movement of the first top plate and the second top plate, lossless and rapid decomposition of the oil supply pipe is achieved, and the oil pipe decomposition efficiency is improved. The operation is very convenient.

This invention proposes a method for preparing nanocrystalline lithium iron phosphate based on carboxylated iron phosphate, comprising the following steps: S1. Iron oxide red and iron powder are mixed as an iron source, dissolved in deionized water, phosphoric acid is added, and the mixture is activated at 50-150°C. A multifunctional surface activator is then added for the first aging and crystal growth, followed by pulverization; S2. An organic solvent is added, and the mixture is aged a second time at 50-150°C. The mixture is then filtered, washed, and carboxylated iron phosphate is obtained; S3. The carboxylated iron phosphate is ball-milled and mixed with a lithium source, followed by spray drying to obtain a dry powder; S4. The dry powder is sintered to finally obtain carbon-coated nanocrystalline lithium iron phosphate. This invention facilitates the synthesis of nanocrystalline lithium iron phosphate, helps obtain nanocrystalline particles with uniform size, and promotes lithium-ion diffusion.