34results about How to "No need to transfer" patented technology

The invention discloses a low-temperature direct preparation method of graphene under double-temperature-zone control, and a double-temperature-zone tube furnace. The method comprises the steps of dividing a vacuum reaction furnace into a high-temperature zone and a low-temperature zone, putting transition metal into the high-temperature zone, directly putting substrate material into the low-temperature zone, vacuumizing, injecting hydrogen gas into the vacuum reaction furnace, heating the low-temperature zone to 100-1,000 DEG C, heating the high-temperature zone to 1,000-1,100 DEG C, introducing carbon source into the vacuum reaction furnace, cracking the carbon source in the high-temperature zone, and performing chemical vapor deposition (CVD) for 5-180 min in the low-temperature zone while keeping constant hydrogen gas flow, to obtain graphene directly deposited on the substrate. The preparation method has the advantages of simple growth process, no need of catalysis, low growth temperature of 100-1,000 DEG C, no restriction on substrate material, and large-area growth of graphene. The grown graphene has low defect peak, high crystal quality, excellent light transmittance and electrical conductivity.

The invention belongs to the technical field of graphene preparation, and particularly relates to a method for preparing graphene through plasma-enhanced chemical vapor deposition. Solid carbon is used as a carbon source, and a plasma-enhanced chemical vapor deposition method is utilized for growing graphene. The method comprises the steps that 1, a substrate and an activated solid carbon are placed into different temperature regions in a plasma-enhanced chemical vapor deposition device for vacuumizing; 2, the temperature regions where the substrate and activated solid carbon are located are heated to reach the corresponding temperature, and gas is introduced; 3, a plasma generator is turned on to enable graphene to grow; and 4, a heating power source is turned off, gas is continuously introduced, rapid cooling is performed to the room temperature, and the graphene grows on the surface of the substrate uniformly. According to the method, the solid carbon has wide sources, the cost is low, the growth temperature is low, the selective range of the substrate is wide, and the complete and high-quality single-layer or multi-layer graphene can be obtained.

The invention belongs to the technical field of plant cultivation, and discloses a method for direct sowing and seedling breeding of bletilla seeds. The method comprises the following steps of A, seed harvesting; B, seed treatment by agents; C, seed sowing; D, seedling breeding, and management of water and fertilizer. The method has the advantages that the survival rate of seedling is high, the cost is low, the operation is simple, the propagation speed is quick, and the method is suitable for scale production.

The invention discloses a toothed rail train having a power switching function and a suspension hinge structure and relates to the technical field of rail traffic. The toothed rail train comprises atleast one train unit. The train unit comprises a first motor vehicle, a second motor vehicle and a third motor vehicle which are hinged to one another in sequence. A toothed rail and wheel rail integrated steering frame is arranged at each of the two ends of the bottom of the second motor vehicle, and a toothed rail and wheel rail integrated steering frame is arranged at the end, away from the second motor vehicle, of the bottom of each of the first motor vehicle and the third motor vehicle. Every two adjacent motor vehicles are subjected to end portion connection through a suspension hinge connecting device, and gravity at the end portions, close to the second motor vehicle, of the first motor vehicle and the second motor vehicle can be transmitted to the second motor vehicle. By the implementation of the technical scheme, configuration of power steering frames can be effectively reduced, power can be output to wheels or drive gears on the same wheel axle, the traction power of the train can be sufficiently exerted, and the requirement for a mixed line of the maximum 4% of a common wheel rail ramp and the maximum 25% of a toothed rail ramp can be effectively met.

The invention provides a preparation method of suspended graphene. The preparation method comprises the following steps: step A, adopting a semiconductor technology to prepare an expected structure on a silicon carbide substrate; step B, in a carbon-rich environment, adopting a high-temperature thermal decomposition method to prepare the suspended graphene. The preparation method is simple in preparation process, free of chemical pollution, and suitable for mechanical and automatic manufacture; the obtained suspended graphene is easier to use.

The invention provides a double-cycle production line and production process of prefabricated building prefabricated parts, and belongs to the technical field of production of the prefabricated building prefabricated parts. The technical problems that in the prior art, the occupied area is large, and the production efficiency is low are solved. According to the solution, the double-cycle production line of the prefabricated building prefabricated parts comprises a formwork removal hoisting area, a steam curing area, a part pre-curing area and a ferry rest area which are sequentially arranged in the horizontal direction of a workshop from left to right, wherein the double-cycle production line further comprises a first machining preparation area, a second machining preparation area, a firstpouring preparation area, a second pouring preparation area, a first pouring vibration area and a second pouring vibration area; the first machining preparation area and the second machining preparation area are symmetrically arranged on the two sides of the steam curing area correspondingly; the first pouring preparation area and the second pouring preparation area are symmetrically arranged onthe two sides of the part pre-curing area correspondingly; and the first pouring vibration area and the second pouring vibration area are symmetrically arranged on the two sides of the left end of theferry rest area correspondingly. Compared with the prior art, the double-cycle production line and production process of the prefabricated building prefabricated parts can meet the production requirements of various prefabricated building prefabricated parts and have the advantages that the working efficiency is high, design is reasonable, and the occupied site is saved.

The invention discloses a nitrogen gas quenching process for a 25Cr2Ni4WA material. The nitrogen gas quenching process comprises the following steps: a, processing a spare part into a finished product; b, loading the spare part into a vacuum furnace, controlling the vacuum degree at no more than 13.3Pa; c, keeping warm at 650-700 DEG C and preheating for 30-40 minutes; d, keeping warm at 870-890 DEG C for 150-180 minutes and quenching and heating; e, cooling by nitrogen, wherein the cooling pressure is 2*10<5> to 3*10<5>Pa; f, carrying out tempering after detecting that the related sizes of the spare part meet the technological requirements of the product, wherein the tempering temperature is 200-240 DEG C, and keeping warm for 180-210 minutes; and g, nitrogen cooling, wherein the cooling pressure is 2*10<5> to 3*10<5>Pa. The spare part processed by the technology disclosed by the invention is free of oxidation, free of decarburization, small in quenching deformation, fewer in manufacturing procedures after quenching, and easy to process, and the technology is free of pollution to environment.

The invention relates to a vacuum filtering device. The vacuum filtering device comprises a filtering cup and a filtrate bottle, and further comprises a clamp ring and a filtering main body, wherein the clamp ring comprises a circular ring and clamp ring arms and is used for fixing the filtering main body and the filtering cup; the filtering main body comprises a body, a filtering film supporting member and a filtration joint; the upper bottom surface of the body is provided with a first groove; the interior of the first groove is provided with a first blocking part; the upper part of the side surface of the body is provided with a first outer screw thread matching with a first inner screw thread; the lower bottom surface of the body is provided with a second groove which is connected with the filtrate bottle; the interior of the body is also provided with a filtrate channel and a gas channel; the first groove communicates with the second groove through the filtrate channel; the second groove communicates with the exterior of the filtering main body through the gas channel; the filtering film supporting member is arranged on the first blocking part; and the filtration joint is arranged on the gas channel and extends out of the body. The vacuum filtering device provided by the invention has the advantages of simple structure, firmness, durability, use convenience, cleaning easiness, etc.

The invention discloses a method for preparing recombinant-aspergillus niger glucose oxidase and application of the recombinant-aspergillus niger glucose oxidase. Recombinant trichoderma reesei Tu6 delta tku70::Agod constructed by introducing an Agod gene into trichoderma reesei Tu6 delta tku70 can successfully express the recombinant-aspergillus niger glucose oxidase, the expression quantity is high, and the enzyme activity in fermentation broth can achieve 137 U / mL which is the highest level of the enzyme activity of shake flask fermentation in production of glucose oxidase strains at present. After the recombinant-aspergillus niger glucose oxidase in the fermentation broth is subjected to ni-sepharose purification, the detected enzyme activity can achieve 342 U / mL. The specific activity of the recombinant-aspergillus niger glucose oxidase is 155 U / mg protein. The recombinant-aspergillus niger glucose oxidase prepared by the method has good heat stability and good acid-alkali tolerance, the fermentation process is simple, transferring is not needed, raw materials are cheap and are easily obtained, and the cost is greatly reduced. The recombinant-aspergillus niger glucose oxidase can be widely applied to the fields of food and medicine.

The present invention discloses an MESH product wireless network frequency-width automatic switching characteristic test system and method. The system includes a first MESH node, a second MESH node, afirst PC client, a second PC client, a step attenuator, a shielding room, a second shielding box, and a first shielding box, wherein the first MESH node and the second MESH node, the first PC client,the second PC client, the step attenuator, the second shielding box and the first shielding box are all disposed in the shielding room, and the second MESH node is connected to the second PC client through a second network cable, the first MESH node is disposed in the first shielding box, and the second MESH node is disposed in the second shielding box. The system solves the technical problem oftroublesome testing caused by frequent replacement of the test environment existed in the prior art.

The invention relates to the field of straw fermentation, in particular to a straw biological fermentation system and method. The method comprises the following steps of Step 1, placing straw in a plurality of straw groove plates, starting an outer end driving motor of a sliding roller, and pushing the straw into a box body; Step 2, starting a chopping motor to drive a chopping ring to do lifting reciprocating motion in the box body, and chopping of the straw; Step 3, starting a rotating motor to drive an auxiliary material adding mechanism to rotate, so that spiral plates rotate in material containing pipes, and therefore, the auxiliary materials in the material containing pipes are pushed out and fall into the box body; Step 4, starting a stirring motor, enabling a stirring shaft to drive stirring plates and stirring spiral plates to stir the straw and the auxiliary materials, blocking the straw groove plates through the chopping ring, sealing the box body, and spraying zymophyte liquid into a mixture through spray heads; and Step 5, after fermentation is completed, extending an electric telescopic rod, so that a blocking plate slides out of the base, and the stirring motor is started reversely to push the feed out of the base.

The invention discloses a traffic vehicle flow intelligent monitoring camera, which comprises: two photosensitive elements, a main control processing module and a cloud server, and the photosensitive element is equipped with a telephoto lens; the main control processing module includes: a digital signal processing chip, a local storage module, a vehicle traffic calculation module and radio frequency wireless port, the digital signal processing chip sends the processed lane image signal to the local storage module, the traffic flow calculation module is connected to the output end of the digital signal processing chip, and the traffic flow calculation module sends the traffic flow statistical data Send it to the cloud server through the radio frequency wireless port. Instead of manual labor, it intelligently detects and analyzes and classifies the data and stores them in the cloud server and local storage module. It has a simple structure and does not need to transmit a large amount of data, which saves labor costs, improves efficiency, and realizes the intelligent control and big data of the Internet of Things. Cloud storage brings convenience, efficiency and accuracy to traffic management analysis.

The invention discloses a method for preparing recombinant-penicillium amagasakiense glucose oxidase and application of the recombinant-penicillium amagasakiense glucose oxidase. Recombinant trichoderma reesei Tu6 delta tku70::Pgod constructed by introducing a Pgod gene into trichoderma reesei Tu6 delta tku70 can successfully express the recombinant-penicillium amagasakiense glucose oxidase, the expression quantity is high, and the enzyme activity in fermentation broth can achieve 28 U / mL. The recombinant-penicillium amagasakiense glucose oxidase in the fermentation broth is subjected to ni-sepharose purification, the enzyme activity in a protein solution obtained by ultrafiltration concentration can achieve 330 U / mL, and the specific activity of the recombinant-penicillium amagasakiense glucose oxidase is 407 U / mg protein. The recombinant-penicillium amagasakiense glucose oxidase prepared by the method has good heat stability and good acid-alkali tolerance, the fermentation process is simple, transferring is not needed, raw materials are cheap and are easily obtained, and the cost is greatly reduced. The recombinant-penicillium amagasakiense glucose oxidase can be widely applied to the fields of food and medicine.

The invention discloses a method for preparing nanocrystalline graphene on a sapphire substrate and belongs to the field of semiconductor material preparation. The method comprises the following steps of putting a sapphire substrate into a graphene PECVD plasma device, pumping vacuum and filling an inert gas to target pressure; heating the sapphire substrate to a target temperature; pretreating the sapphire substrate in hydrogen atmosphere; setting source power of PECVD plasma to be target powder, setting chamber pressure to be target pressure, setting hydrogen gas flow to target flow, turning on a PECVD plasma power supply to form plasma; introducing a carbon source, setting the carbon source flow to be target flow, setting the growth time and growing the graphene; and closing the carbon source, closing the PECVD plasma, completing growth and cooling to room temperature. The graphene material prepared through the method does not need to be transferred, the preparation cost of wafer-level graphene is reduced and the method is of important significance in graphene foundation research and device research.

The invention relates to a flanging device for a tetrafluorohydrazine pipe. The flanging device comprises a supporting bracket and a flanging positioning device. The supporting bracket comprises a base, the base is provided with a slide rail, centering mechanisms are symmetrically and radially arranged on the front and rear portions of the slide rail, one or more jacking mechanisms are arranged between the two centering mechanisms, and the front end of the slide rail is provided with a positioning mechanism. The flanging positioning device comprises a mounting base, the left and right sides ofthe front end of the mounting base are provided with a conical heating flanging mechanism and a stock mold respectively, the rear end of the mounting base is connected with a motor, and the motor isslidingly arranged on a slide base through a support and pushed by an air cylinder to move frontwards and backwards. The flanging device for the tetrafluorohydrazine pipe can improve the work efficiency.

The invention relates to the technical field of chemical industry processing devices, and concretely relates to a distillation kettle for chemical industry production. The distillation kettle comprises a heating mechanism, a tank body, a second-stage separation mechanism, a first-stage separation mechanism, a water supply mechanism, a water drainage mechanism, a first cooling cover and a second cooling cover. A liquid is distilled in a first-stage separation chamber, then is circulated into a second-stage separation chamber, is distilled in the second-stage separation chamber, and then is circulated into a third-stage separation chamber to realize rapid fractional distillation of the chemical industry liquid, and the whole process is carried out in the tank body without transfer, and the circulation is rapid; the cooling cover cooperates with the water supply mechanism and the water drainage mechanism to achieve the cooling of the second-stage separation chamber and the first-stage separation chamber, so every separation chamber can reach a required temperature; and a supporting plate can collect the finally remaining material, so when the staff opens a sealing mechanism, the supporting plate can be driven under the action of a traction rope to rotate, and the material automatically slides out, thereby the material can be easily taken.

The invention provides a water conservancy gate load protection method and device. The method comprises the steps that a set comparison voltage value is obtained; acquiring a working current value of a water conservancy gate motor; converting the working current value into a working voltage value; after delaying for a certain time, comparing the working voltage value with the comparison voltage value; and if the working voltage value is greater than the comparison voltage value, shutting down the motor. The device comprises a detection unit and a conversion unit, the detection unit is configured to obtain a working current value of a motor, and the conversion unit is configured to convert the working current value into a working voltage value; the setting unit is electrically connected with the comparison unit and is configured to obtain a current limiting value and distribute different comparison voltage values according to the current limiting value; the comparison unit is used for comparing the working voltage value with the comparison voltage value and outputting a comparison result; and the control unit is used for controlling power-on and power-off of the motor. The method and the device realize load protection by detecting the current of the motor, and are safer and more reliable.

The invention provides a defrosting device for a refrigerator. The device includes a defrosting frame, a guide rail support and a driving device, wherein canvas is detachably arranged on the defrosting frame; the guide rail support is arranged below an overhead coil of the refrigerator and used for bearing the defrosting device; the driving device is arranged in the defrosting frame and used for driving the defrosting frame to move on the guide rail support. When used for defrosting of the overhead coil, the device fills the blank of mechanical defrosting of the overhead coil in the refrigerator, and defrosting of the whole refrigerator is achieved. The problem that goods need to be moved for defrosting of the overhead coil in the refrigerator is solved, labor and material resources are greatly saved, the goods do not need to be transferred during defrosting, and the temperature and the quality of the goods are ensured.

The invention discloses a rhizoma bletillae liquid pollination device. The rhizoma bletillae liquid pollination device comprises a pipe body. The top of the pipe body is rotationally connected with asealing cover. An injection head is arranged in the center of the bottom of the pipe body. The top of the pipe body is rotationally connected with the sealing cover, and the rotating angle of the sealing cover is 0-180 degrees. A first cavity is formed in the sealing cover. A second cavity is formed in the pipe body. The first cavity and the second cavity are communicated with each other, and thesection shapes of the first cavity and the second cavity are the same. An extrusion mechanism is installed in the sealing cover. The extrusion mechanism comprises a push rod and a rubber plug. The push rod perpendicularly penetrates through the center of the sealing cover. The rubber plug is arranged at the bottom end of the push rod, and the rubber plug is embedded into the first cavity or the second cavity in an attached mode. According to the rhizoma bletillae liquid pollination device, the sealing cover and the extrusion mechanism can integrally rotate to one side, so that the top of the pipe body is opened, and water and pollen can be conveniently put into the pipe body. Therefore, the pipe body can be directly used as a pollen liquid mixing area and an injection storage area withouttransfer.

The invention discloses a multifunctional material taking device for the pathology department, and relates to the technical field of medical instrument assistance. The supporting legs are fixed to the four corners of the bottom of the cleaning box. The fixing mechanisms are distributed on the front side wall of the supporting plate in a matrix mode. The cleaning mechanism is arranged in the cleaning box; the drying mechanism is arranged on the right side of the cleaning box and connected with the cleaning box. The instrument fixing mode is simple, hands are prevented from being hurt by sharp ends, unused instruments cannot be touched, pollution is avoided, and the instruments are convenient to take. During use, instruments can be placed in the net frame, so that the instruments can be cleaned in time after use and do not need to be transferred.

The invention relates to an air-ground dual-purpose suspension type air rail traffic system, which comprises a suspension type air rail train body. A connecting device for being connected with a ground trailer is arranged at the bottom of the suspension type air rail train body, and a suspension device for being suspended on the lower part of a railway beam is arranged at the top of the suspensiontype air rail train body. According to the air-ground dual-purpose suspension type air rail traffic system, the advantages of various railway systems are combined, the characteristic that a suspension type air rail is suspended through the upper part, but other train systems are all supported through the bottom is utilized, trains with the various systems are reinforced with one another, and theair-ground dual-purpose suspension type air rail traffic system can be basically suitable for various road sections.

The invention relates to a sealed crushing and screening machine which is characterized in that an automatic feeder of the crushing and screening machine is communicated with a feeding end of a crushing part, a discharging end of the crushing part is communicated with a vibrating and screening part through flexible connection, and the crushing part and the vibrating and screening part are fixed on a frame body. The problems that an existing smashing and screening machine cannot achieve continuous filling, and air cannot be effectively isolated in the smashing, screening and sample loading processes, so that a sample detection result is inaccurate, and errors are large are solved.

The invention discloses a cold-batch degreasing and bleaching method for pure cotton spunlace non-woven fabric, and belongs to the technical field of bleaching. The method comprises the following steps of (1) primary cold batching: carrying out primary cold batching on a cotton web subjected to impurity removal; (2) secondary cold batch: carrying out secondary cold batch on the cotton web subjected to the primary cold batch; and (3) washing: washing the cotton web subjected to secondary cold batch, and then carrying out a spunlace process, wherein the primary cold-batch liquid comprises a first composite bio-enzyme agent and a first auxiliary agent; the pH value of the secondary cold-batch liquid is 7-8; the secondary cold-batch liquid comprises a low-temperature refining agent, a second composite bio-enzyme agent, hydrogen peroxide, sodium hydroxide and a second auxiliary agent; and the first composite bio-enzyme agent and the second composite bio-enzyme agent both comprise pectinase, cellulase, proteinase and lipase. The method has better impurity removal, degreasing and bleaching effects; the whiteness of the non-woven fabric treated by the method can reach 80 or above; the water absorption capacity is 12-14g according to the patent; and the weight loss rate is greater than 6%.

The invention discloses polyvinyl chloride granule production equipment and a production method thereof. The polyvinyl chloride granule production equipment comprises a fixed bottom plate, a shell and a stirring barrel, wherein a stirring shaft is movably arranged in the stirring barrel, the upper end of the stirring shaft penetrates through the lower wall of a protection box to be movably connected to a gearbox, a temperature control stirring frame is arranged on the outer side of the stirring shaft and the outer side of a spiral blade, the temperature control stirring frame comprises an electric heating assembly, a semiconductor refrigeration assembly is arranged on the side, away from the electric heating assembly, of the stirring shaft, an extrusion device is fixedly arranged at an outlet in the lower end of the stirring barrel and comprises a second motor, a spiral extrusion part is movably arranged at the output end of the second motor, a vacuum pipeline is fixedly arranged at the end, away from the second motor, of the spiral extrusion part, a grid is fixedly arranged at the front end of the vacuum pipeline, and the front end of a rotating rod of the spiral extrusion part penetrates through the vacuum pipeline and is fixedly provided with a cutting knife. Therefore, the equipment is high in working efficiency, small in occupied area, capable of effectively saving manpower and material resources and suitable for wide popularization.