36results about How to "Keep the original state" patented technology

The invention discloses a vacuum freeze-drying processing method of dendrobium officinale, comprising the following steps of: (1) washing and draining fresh steam sections of dendrobium officinale and cutting into segments; (2) arranging the drained dendrobium officinale in a freeze-drying device for pre-freezing and constant-temperature freezing at 30 DEG C below zero to 35 DEG C below zero; (3)carrying out sublimation drying on the dendrobium officinale processed in the step (2); (4) heating the dendrobium officinale after the sublimation drying in the step for (3) for evaporating residualwater; and (5) packing the condensed dendrobium officinale products with water content of 6-9% dried in the step (4) into clean and sanitary food-grade aluminum-foil bags, sealing to the dendrobium officinale products. The dendrobium officinale products processed by the method disclosed by the invention are rich in dendrobium officinale polysaccharide, and can be directly eaten or taken as ingredients for stewing soup to eat or making tea to drink. The dendrobium officinale products keep original state, taste and pharmacological effects of the dendrobium officinale, can be stored and transported at normal temperature, and has more than five years of shelf life.

The invention discloses freeze-dried dendrobium officinale powder and a preparation method thereof. The method comprises the steps of (1) cleaning fresh picked dendrobium officinale with water, drying, and cutting the dendrobium officinale into sections which are 2-4cm long; (2) putting the dried dendrobium officinale into a juicing machine, adding pure water according to a ratio of material to liquid being 1g:5ml and juicing; (3) freezing the dendrobium officinale juice at the temperature of -20 DEG C for one night; (4) pre-cooling vacuum freeze-drying equipment at the temperature of -56 DEG C for half an hour; and (5) putting a frozen dendrobium officinale product into the pre-cooled vacuum freeze-drying equipment, and performing vacuum freeze-drying treatment under conditions that the temperature is -56 DEG C and the vacuum degree is 7-9Pa for 18-30 hours so as to obtain the freeze-dried dendrobium officinale powder. The method is simple, is easy to operate and is low in production cost; the obtained freeze-dried dendrobium officinale powder product is loose, is rich in dendrobium officinale polysaccharide, does not contain fibers and is high in dissolvability; the utilization rate of the officinale polysaccharide is high; furthermore, the original state of dendrobium officinale is retained, and the freeze-dried dendrobium officinale powder is light green, has a fresh taste and medicinal effects and can be stored and transported under normal temperature; the retention period is effectively prolonged.

The invention relates to a multi-scale multi-phase dispersion strengthening iron-based alloy and a preparing and representation method thereof. The alloy comprises a matrix and a strengthening phase.The strengthening phase comprises at least two kinds of strengthening phase particles different in size. The strengthening phase particles, with the grain size smaller than or equal to 50 nm, in the two kinds of strengthening phase particles different in size account for 85%-95% of the total volume of all the strengthening phase particles. The matrix is a Fe-Cr-W-Ti alloy. The strengthening phasecomprises Y2O3 crystals, a Y-Ti-O phase, a Y-Cr-O phase and a Y-W-O phase. A representation method of the multi-scale multi-phase dispersion strengthening iron-based alloy comprises the steps that thestrengthening phase in the alloy is separated through electrolysis, and then representation is conducted through an electron microscope. The room-temperature tensile strength of the prepared alloy ishigher than 1,600 MPa, the tensile strength of the alloy is larger than 600 MPa when the temperature is 700 DEG C, and the comprehensive mechanical performance is obviously superior to that of same-mark and same-type alloys.

The invention discloses a plant stereo cultivation device for a family, which comprises at least one cultivation tray which is parallelly arranged in turn in the vertical direction to form a tray group; the cultivation tray comprises a tray bottom, a tray body arranged on the tray bottom and at least one plant growing port arranged on the tray body; and the inside of the cultivation tray is provided with a cultivation medium space which is communicated with the plant growing port. The household plant stereo cultivation device adopts cultivation tray structures which can be combined in stereo mode, can fully utilize narrow space on a balcony of a family in a high-rise to plant plants such as green vegetables without pesticide residue and so on, meet the demands of domestic children and old people on the green vegetables, create amusement and recreation and housework conditions for the old people, achieve the environment-friendly aim of purifying air and keeping the prior state of the space and floor, simultaneously provide good sight for an apartment, achieve decorative effect, beautify family environment, eliminate the crowding feeling of the narrow space on the balcony of the family and improve the balcony utilization rate.

The invention relates to a method for recovering metals in waste thin electric wires, messed electric wires or miscellaneous electric wires by thermal decomposition. The method includes the following steps of: carrying out oxygen-poor hot treatment on thin electric wires, messed electric wires or broken electric wires, heating enamelled wire raw materials to 580 DEG C to 650 DEG C at the rate of temperature rise of 10-20 DEG C under inert atmosphere or oxygen-poor atmosphere, and maintaining the temperature for 10 to 20 minutes; and slightly and mechanically stirring or vibrating the processed electric wires so as to lead attached residuals to fall automatically. After processing, the metal wires basically remain the original performances and do not suffer oxidation and mechanical loss; and the metal recovery ratio is nearly as high as 99 percent, and the purity is also high. The method meets the requirement of subsequent working procedures on use and the requirement on resource recovery, thereby realizing the maximum separate recovery of renewable resources in waste; and furthermore, by adopting anoxic low temperature decomposition, the relative air displacement is low and requirements of cleaning processes can be met, thereby contributing to the reduction of secondary pollution of atmospheric environment.

The invention relates to a preparation technique of ceramic target with Li doped with ZnO, which pertains to the preparation technical field of ceramic target material. The process is that: zinc nitrate, lithium nitrate, urea and glycine are fully mixed then put into a beaker; the obtained material is added with deionized water, and is stirred, so as to lead the material to be fully melt; the melted solution is heated and sent into an evaporator, leading combustion reaction to be occurred and synthesizing Li doped with ZnO powder body; the powder body is grinded, then is sintered in a discharging plasma sintering furnace; the obtained product is the Li doped with ZnO ceramic target. The invention has the advantages of raw material being easy to be obtained, short process period, high purity and being evenly doped; in addition, acceptor doping is realized for the element Li used for substituting for Zn in lattice ZnO, and the using of the ceramic target is in favor of the preparation of Li doped with a P-typed ZnO film.

The invention discloses a method for characterizing a second phase of ferromagnetic alloy powder. The method comprises the following steps: with foamed nickel or nickel mesh filled with ferromagneticpowder as an anode, separating the second phase of the ferromagnetic alloy powder from a powder matrix through electrolysis to obtain an electrolyte containing the second phase; then, performing magnetic separation, diluting by using absolute ethanol and performing ultrasonic dispersion, then dripping onto an ultra-thin carbon supporting membrane and drying to prepare a TEM detection sample; then,performing structural observation and characterization by using a TEM. By the method, the morphology, the structure, the size and other characteristics of the second phase smaller than 0.5[mu]n, especially the second phase with the size being smaller than 50nm, in the ferromagnetic alloy powder can be characterized; the second phase obtained through separation retains the original structure; themethod is simple and high in efficiency; an electrolysis condition is easy to obtain; the repeatability is strong; the method can applied to analysis and characterization of the second phases of various powdery materials.

The invention discloses a testing system for a transmission characteristic of a laser in a low-contrast environment and a testing method of the testing system. The testing system includes a polarizedlight generating device, a haze medium generation simulating device and a scattering effect measurement device; the scattering effect measurement device comprises a beam splitter prism, a polarizationstate gauge, an optical power meter and a computer; the beam splitter prism corresponds to an emitting glass window of the haze medium generation simulating device, and the optical power meter and the polarization state gauge are arranged on two beam transmission paths of the beam splitter prism respectively. Smoke granularity is measured only through a granularity gauge, the intensity of scattered light and a polarization stokes vector are measured by the optical power meter and the polarization state gauge, the polarization degree, linear polarization degree, polarization angle and circle polarization degree of polarized light are obtained through calculation, and finally an optical model of a complicated environment of haze mediums is created. The polarized light does not need to be subjected to conversion such as attenuation, phase delay, polarizing and the like, an original state of the polarized laser after the the polarized laser is emitted from the environment of the haze mediums is preserved, measurement is more accurate, and therefore description of the transmission characteristic of the laser is more accurate.

The invention relates to a method for making a picture by using plant leaves, which includes: (1) put the leaves into sodium carbonate aqueous solution to soak; (2) pike up the leaves when they turn to soft, and remove whole or partial mesophyll from them, keep the nervation and involucra; (3) wash the leaves, (4) dry; (5) use fabric leather softener to lay on or soak the leaves, (6) dry; (7) use the color pigment to coat, draw, etch or spray on the leaves through manual or apparatus to obtain the plant-leaf-made picture.

The invention relates to a spleen invigorating and stomach nourishing rice. Specifically, the rice is coated with a nutritive layer, which is composed of lotus root powder and corn starch that are added with a Chinese medicinal extract. The Chinese medicinal extract comprises the following Chinese medicinal components: dioscorea opposita, crude bighead atractylodes rhizome, ginger, hawthorn, Poriacocos, jujube, seed of Job's tears, Codonopsis pilosula, chicken's gizzard-membrane, lotus seed and Chinese wolfberry. The preparation method includes: adding the Chinese medicinal extract into lotusroot powder and corn starch, then adding water, conducting heating gelatinization to obtain a spray solution, putting rice into a coating machine, performing continuous spraying, and then conductingdrying. By adding a variety of spleen invigorating and stomach nourishing Chinese herbal materials, the spleen invigorating and stomach nourishing rice provided by the invention also has nourishing and repair effects on the spleen and the stomach during eating by people, and the selected Chinese herbal materials are medicinal and edible, and can be used by most people. The nutritive layer also canplay a protection and isolation role, retains the original state of uncooked rice, better retains the taste of rice, and also prolongs the shelf life of rice.

The invention discloses a herbarium making method. The method includes the steps of separating parts of a plant to be made into a herbarium; pressing branches, leaves and flowers on a bottom plate with a pressing piece, fixing with a physical method easy to remove, waiting for air drying, fixing the fruit in the middle with two ventilated metal plates and then drying in an oven; combining the branches, the leaves, the flowers and / or the fruit which are separated and air dried, bonding with a viscous material, then fixing on a bottom layer of a pearl cotton material, bonding a frame of the pearl cotton material to the bottom layer with the size of the frame and the bottom layer determined according to the size of the herbarium, and then bonding a polyphthalate plastic cover plate on the frame. According to the method, the EPE pearl cotton is adopted as the bottom layer and the frame, and the EPE pearl cotton has better flexibility, adjustable thickness and low price compared with the traditional herbarium paper, and has no risk of mildew. The plastic cover plate can be adopted to seal the herbarium, and the effects of preventing dust and preventing the herbarium from being scatteredcan be achieved.

The invention provides Laminaria japonica frond mask and a preparation method thereof.The Laminaria japonica frond mask comprises a mask carrier and a mask nutrient solution, the mask carrier is a Laminaria japonica frond halved in the thickness direction; the Laminaria japonica frond is 150-400 cm in length, 20-40 cm in width and 0.1-0.4 cm in thickness; the mask nutrient solution is made from the following materials according to parts by weight: 20-30 parts of glycerol, 0-3 parts of water-soluble natural VE, 1-3 parts of bentonite, 5-15 parts of cucumber gum, 5-15 parts of Aloe gel, 0-2 parts of sodium carboxymethyl cellulose, and the balance of deionized water.The preparation method is mainly characterized in that the Laminaria japonica frond is halved to obtain the half Laminaria japonica frond mask carrier, and a standard mask is then made and soaked in the mask nutrient solution for packaging; the mask is natural and nonirritating, can keep moist for a long time, is simple to manufacture and has certain whitening function.

The invention discloses a charcoal fire heating secondary puerarin tablet dryer and an application method thereof. The charcoal fire heating secondary puerarin tablet dryer comprises a charcoal fire heating chamber, a filtering chamber located on the charcoal fire heating chamber, a primary drying chamber located on the filtering chamber and a secondary drying chamber connected with the primary drying chamber through a heat conducting channel, wherein a filtering net is put in the filtering chamber; the charcoal fire heating chamber is communicated with the filtering chamber through air holes, and the filtering chamber is communicated with the primary drying chamber through the air holes; a through hole communicated with the outside is formed in the secondary drying chamber; a first conveying belt and a second conveying belt which is parallel to the first conveying belt in an up-down corresponding mode are arranged inside the primary drying chamber and the secondary drying chamber respectively; the first conveying belt is driven by a power device; a material inlet is formed in the right side of the corresponding conveying belt, and a material outlet is formed in the left side of the corresponding conveying belt. Dust can be filtered out through the filtering net in the filtering chamber, the first conveying belt and the second conveying belt can flatten puerarin tablets, and the puerarin tablets can not bend.

The invention discloses a combined highway tunnel portal structure suitable for large-bias terrains. The structure comprises two rows of pile foundation groups arranged at intervals, each row of pilefoundation groups includes a plurality of pile foundations, the upper surfaces of the pile foundations are located on the same horizontal plane, a bearing table is arranged on the upper surfaces of the pile foundations, and the bearing table is flush with the bottom of a tunnel; the pile foundations are distributed from lower portions of adjacent side edges of an excavated part of the tunnel to the excavation direction of the tunnel, and the pile foundations are parallel to the tunnel; ear walls are arranged on the bearing table, the wall faces, close to the tunnel, of the ear walls are attached to a tunnel primary support, the tops of the ear walls are higher than the arch top of the tunnel, a space is formed by the ear walls and a mountain body at the high position of a slope, and the space is filled and reinforced with cement stabilized gravel and combined with a mountain body at the lower side of the lower slope to form the excavated part of a tunnel portal. By means of the combined highway tunnel portal structure suitable for the large-bias terrains, the portal structure solving a high slope problem and a tunnel basic suspension problem is lowered, the portal structure avoidsthe high slope problem, and the portal can be freely moved according to the terrains and a roadbed slope.

The invention provides a processing method of fresh edible soybeans. The processing method comprises the following steps of firstly blanching fresh green soy bean granules with blanching liquid, then cooling the blanched green soy bean granules, drying the cooled green soy bean granules, refrigerating the dried green soy bean granules, performing heat preservation on the refrigerated green soy bean granules, and performing vacuum freeze drying on the refrigerated green soy bean granules so as to obtain the fresh edible green soy beans. According to the method provided by the invention, the fresh green soy beans are processed through a vacuum freeze drying technique, so that nutrient losses can be effectively reduced, and the original state of the green soy beans is reserved; blanching treatment is performed, so that the beany flavor of the green soy bean granules is effectively reduced, and besides, the natural delicate fragrance of the green soy beans is reserved; the made green soy bean products can be directly eaten, and can be used as mixed ingredients to be used for making dishes, stewing soup and the like to be eaten. Besides, the water activity in the green soy bean products is very low, which is disadvantageous to microbiological growth, so that the green soy bean products can be stored and transported at normal atmospheric temperature. According to the method provided by the invention, the production technology is simple, is easy to operate, and can be mechanically treated in the whole process, and the cost of human resources is significantly reduced.

The invention relates to non-oil-penetrating type creep rubber waterproof coating. The coating is characterized in that the coating includes, by mass, 3-20% of butyl rubber, 5-10% of styrene-butadiene rubber, 35-60% of rubber powder, 5-20% of a polymer modifying agent, 5-25% of asphalt and 5-15% of an inorganic modifying material; the polymer modifying agent is one of or a mixture of materials selected from a group consisting of polypropylene, polystyrene, bis(triethoxysilylpropyl) tetrasulfide, bis(triethoxysilylpropyl) disulfide, gamma-mercaptopropyl trimethoxysilane, oxidized polyethylene wax and ethylene-vinyl acetate copolymer wax; and the inorganic modifying material is glass microbeads, precipitated calcium carbonate powder, talcum powder, ground calcium carbonate powder or a mixture thereof. The actually measured VOC content of the coating is less than 10, and no oil is penetrated at 60 DEG C.

The invention relates to a preparation technique of ceramic target with Li doped with ZnO, which pertains to the preparation technical field of ceramic target material. The process is that: zinc nitrate, lithium nitrate, urea and glycine are fully mixed then put into a beaker; the obtained material is added with deionized water, and is stirred, so as to lead the material to be fully melt; the melted solution is heated and sent into an evaporator, leading combustion reaction to be occurred and synthesizing Li doped with ZnO powder body; the powder body is grinded, then is sintered in a discharging plasma sintering furnace; the obtained product is the Li doped with ZnO ceramic target. The invention has the advantages of raw material being easy to be obtained, short process period, high purity and being evenly doped; in addition, acceptor doping is realized for the element Li used for substituting for Zn in lattice ZnO, and the using of the ceramic target is in favor of the preparation of Li doped with a P-typed ZnO film.

An electromagnetically aided respirator is composed of electromagnets, magnetic induction pieces, adjustable resistor, synchronous controller, and gas guide tube. Its method includes such steps as arranging said magnetic induction pieces between the lung bottom and diophragmatic muscle, and magnetically driving the magnetic induction pieces to move up and down for driving the diaphragmatic muscleto move, so expanding and contracting the chest cavity cyclically.

The invention discloses a separation device, which comprises a sample collector, a filter, a connector, a capturer and a filtrate collector, the sample collector and the filtrate collector are both containers, the filter comprises a filter screen, the capturer comprises a capture chip with the aperture of 0.01-1000 [mu] m, the connector is a barrel-shaped object, and the sample collector, the filter, the connector, the capturer and the filtrate collector are connected in sequence. According to the separating device disclosed by the invention, before samples such as clinical hydrothorax and ascites, urine and the like are transferred to a laboratory for detection, particulate matters to be detected in the samples can be separated and fixed at the same time at a sampling site, the intact forms of cells are kept, the cells are prevented from disintegration and degradation of biomacromolecules in the cells are prevented, and microbial pollution and reproduction are avoided; the false negative rate caused by the storage and transportation process of the sample is effectively reduced, and the detection rate of tumor cells is greatly improved.

The invention discloses a furnace stopping method for blast furnace anatomy research and a spray gun device. The furnace stopping method is characterized by comprising the following steps that 1) thespray gun device for spraying a filling material into a blast furnace tuyere rotating area is designed and manufactured; 2) short-term damping down of a blast furnace is performed, the spray gun device is arranged to a part of tuyeres of the blast furnace, re-blowing of the blast furnace is performed after the spray gun device is finished arranging; 3) blast furnace blast temperature canceling isperformed, it is ensured that the theoretical combustion temperature at the front of the tuyeres is not higher than the melting point temperature of the filling material; 4) the spray gun device is connected with a spraying machine, and the filling material is sprayed into the blast furnace tuyere rotating area; 5) after the blast furnace damping down and stopping, coal gas is cut off effectively,and blast furnace cooling equipment keeps normal cooling; 6) N2 gas is introduced into the blast furnace, and furnace burden cooling is performed; and 7) a thermocouple is inserted, the thermocoupleis connected into a central control computer to allow the temperature field change to be observed until furnace cooling is finished. According to the furnace stopping method for the blast furnace anatomy research and the spray gun device, the original state of each section of furnace burden of the blast furnace can be well reserved, research and analysis are facilitated, and a relatively good application prospect is achieved.

A 5G communication antenna test frame and its test method, belonging to the field of communication technology, including a base, a telescopic rod and an antenna, the top of the telescopic rod is fixedly connected with a mounting block, and the interior of the mounting block is fixedly connected with a limit block, so The end of the limiting block away from the mounting block is slidably connected with a slider, the top of the limiting block and the sliding block has a limiting groove, the antenna passes through the mounting block and is placed inside the limiting groove, and the sliding block is away from One end of the limit block is fixedly connected with a wire management plate, and a rotating plate is installed in the middle of the wire management board. The line plate is connected by rotation, and by setting the limit groove on the limit block and the slider, the setting of the limit groove can improve the stability of the communication antenna during the test process, thereby facilitating the signal test of the antenna, and solving the problem of the communication antenna in the test. It is easy to swing during the process, which leads to the disadvantage of breaking the communication antenna.

The invention relates to a composite thermal spraying method. The composite thermal spraying method comprises the following steps of cleaning and sandblasting a substrate to be subjected to the thermal spraying process, and then carrying out thermal spraying treatment on the substrate through a raw powder feeding port of a spraying gun. A powder feeding port is newly added to the spraying gun and used for spraying of the powder from the vicinity of the substrate to the substrate surface. Compared with the prior art, the composite thermal spraying method can be used for spraying oxidizable materials, and also can retain the original powder morphology.

The invention discloses a fabrication method and a use method of a bracket used for reinforcing a silk pattern. The fabrication method of the bracket comprises the following steps of (1) preparing fibroin glue, (2) fabricating a fibroin glue film, and (3) fabricating the bracket. The use method of the bracket comprises the following steps of A, preparing fibroin liquid, B, pretreating the silk pattern, and C, reinforcing the silk pattern. The fabrication method and the use method of the bracket are simple; the bracket is only required to be pasted on the back of the silk pattern; the bracket has flexibility, so that an effect of reinforcing the silk pattern can be exerted and the original flexibility of the bracket can be kept; the bracket is easily stripped from the silk pattern; and the original state of the silk pattern can be recovered.

The invention discloses a fabrication method and a use method of a bracket used for reinforcing a silk pattern. The fabrication method of the bracket comprises the following steps of (1) preparing fibroin glue, (2) fabricating a fibroin glue film, and (3) fabricating the bracket. The use method of the bracket comprises the following steps of A, preparing fibroin liquid, B, pretreating the silk pattern, and C, reinforcing the silk pattern. The fabrication method and the use method of the bracket are simple; the bracket is only required to be pasted on the back of the silk pattern; the bracket has flexibility, so that an effect of reinforcing the silk pattern can be exerted and the original flexibility of the bracket can be kept; the bracket is easily stripped from the silk pattern; and the original state of the silk pattern can be recovered.

The invention discloses a high-efficiency utilization method of Dendrobium officinale. The method comprises the following steps: S1, classifying the fresh Dendrobium officinale, cleaning and then placing it to dry for use; S2, adding the drained Dendrobium officinalis into deionized water for high-speed stirring Obtaining Dendrobium officinale slurry; S3, centrifuging the obtained Dendrobium officinalis slurry to obtain supernatant and medicinal residue; S4, carbon fiber material is obtained after the obtained medicinal residue is carbonized at high temperature; S5, the obtained supernatant is obtained Concentrating and vacuum freeze-drying to obtain Dendrobium lyophilized powder, and then further microwave dispersion for packaging; this method adopts a low-temperature vacuum freezing method, which effectively retains the effective components and active substances in Dendrobium, so that the medicinal value of Dendrobium can be obtained. At the same time, the separated medicinal residues are treated at high temperature to obtain biomass-based carbon fibers, which are used as electrode materials or adsorption materials to reduce the environmental pollution caused by the medicinal residues of Dendrobium officinale. method.

The invention discloses a bi-component polyurethane marking coating which is composed of 30 parts by mass of a component A and 5-6 parts by mass of a component B. The component A is prepared by mixing 20-25 parts by mass of modified hydroxy acrylic resin, 0.2-0.4 part by mass of a defoaming agent, 0.3-0.4 part by mass of a flatting agent, 4-6 parts by mass of titanium dioxide, 15-20 parts by mass of internally mixed glass beads, 0.3-0.5 part by mass of a dispersing agent and 40-50 parts by mass of filler. The component B is HDI biuret, and during construction, the component A and the component B are mixed for use. According to the marking paint, the hardness, impact strength, gloss, paint film thickness and water resistance of road marking are improved, meanwhile, the adhesive force and flexibility of the road marking can be improved, and the service life of the road marking is prolonged.

The invention relates to a strengthening phase characterization method of a ferromagnetic alloy block and / or thin film. The optimization scheme includes: using electrolysis to separate the nano- to micron-sized strengthening phase in the ferromagnetic alloy from the alloy matrix to obtain an electrolyte containing the strengthening phase; then dilute with absolute ethanol, disperse ultrasonically, and drop it onto the ultra-thin carbon support membrane and drying to obtain a sample for electron microscopy; and then use electron microscopy for structure observation and characterization. The invention can characterize the morphology and structure of the strengthening phase smaller than 0.5 μm in the ferromagnetic alloy, especially the strengthening phase whose size is smaller than 50 nm. The strengthened phase separated and obtained by the invention retains the original structure of the strengthened phase, the method is simple and efficient, the electrolysis conditions are easy to obtain, the operation is simple, and the repeatability is strong, and it can be used for the analysis and characterization of the strengthened phase in various ferromagnetic materials. The invention effectively avoids the adverse effect of the ferromagnetic alloy matrix on the electron microscope equipment and the detection process, and realizes the TEM / HRTEM structure characterization of the ferromagnetic alloy strengthening phase.

The invention discloses a blast furnace shutdown method and spray gun device for anatomical research, which is characterized in that it comprises the following steps: 1) designing and manufacturing a spray gun device for spraying filling materials into the tuyere swirl area of ​​the blast furnace; 2) short-term wind shutdown of the blast furnace , install the spray gun device to part of the tuyere of the blast furnace, and re-air the blast furnace after the installation of the spray gun device; 5) Effectively cut off the gas after the blast furnace shuts down, and the blast furnace cooling equipment maintains normal cooling; 6) Ventilate N2 gas into the blast furnace to cool the charge; 7) Insert a thermocouple, The thermocouple is connected to the central control computer to observe the change of the temperature field until the end of the cooling furnace. The method for shutting down the blast furnace and the spray gun device used in the anatomical research of the blast furnace of the present invention can better preserve the original state of the charges of each section of the blast furnace, is convenient for research and analysis, and has a better application prospect.

The invention discloses a vacuum freeze-drying processing method of dendrobium officinale, comprising the following steps of: (1) washing and draining fresh steam sections of dendrobium officinale and cutting into segments; (2) arranging the drained dendrobium officinale in a freeze-drying device for pre-freezing and constant-temperature freezing at 30 DEG C below zero to 35 DEG C below zero; (3) carrying out sublimation drying on the dendrobium officinale processed in the step (2); (4) heating the dendrobium officinale after the sublimation drying in the step for (3) for evaporating residual water; and (5) packing the condensed dendrobium officinale products with water content of 6-9% dried in the step (4) into clean and sanitary food-grade aluminum-foil bags, sealing to the dendrobium officinale products. The dendrobium officinale products processed by the method disclosed by the invention are rich in dendrobium officinale polysaccharide, and can be directly eaten or taken as ingredients for stewing soup to eat or making tea to drink. The dendrobium officinale products keep original state, taste and pharmacological effects of the dendrobium officinale, can be stored and transported at normal temperature, and has more than five years of shelf life.