323results about How to "Not easy to mix" patented technology

The invention discloses a low segregation centrifugal casting high speed steel roll and the method. The roll is constituted by high speed steel roll body and alloy ductile ion roll core. The roll is produced by electric furnace. The high speed steel roll body is cast on horizontal centrifuge. As the liquid steel is cast iron powder suspension concentrate with 4%-6% by weight of liquid steel is added. After the liquid steel is cast glass waste sludge is added and then it is cooled by spraying water to form the model. Meanwhile the rotate speed of casting model is changed continuously and finally the ductile ion roll core is cast at the top statically. There is no obvious element segregation in radial section of high speed steel roll manufactured in invention. The macro hardness of roll is high and can achieve 63-65HRC. The difference of roll face hardness is less than 2HRC. The hardness fall of roll along the radial direction is small. The tensile strength of roll body is more than 600MPa and the elongation of roll core is more than 3%. The service life is improved by 5-8 times than high chromium cast iron roll and is improved by 35%-48% than common high speed steel roll. It can decrease the producing cost of rolling steel and prolong roll changing period.

The invention relates to a preparation process and a device of a nano-particle reinforced bimetal composite, the nano-particle reinforced bimetal composite comprises the following chemical components by weight percent: 6-25% of Cr, 4-18% of Ni, 1.0-4% of Mo, 1.0-1.8% of Si, 1.2-3% of Mn, 0.4-2.2% of B, 0.1-1.2% of MgO, 0.2-2% of CaF2, 0.2-0.7% of C, 0.2-0.8% of Nb, not more than 0.9% of one or the combination of CeO2, Y3O2 and La2O3, 0.0-0.8% of Co, and the balance of Fe, and mixed particles of nano-sized carbides, nitrides, borides or carbonitrides are added in alloy powder. The vacuum induction melting and the cladding processes and equipment are adopted for melting and cladding the mixture on a workpiece, the thickness of a cladding layer is 0.1-25mm, the cladding layer contains 1%-50% of nano-reinforcing particles of one or the combination of the carbides, the nitrides, the borides and silicides, and the cladding layer has special performances of wear resistance, corrosion resistance, electrical conductivity, self-lubrication performance and the like. A coating layer and a base material form the metallurgical bonding, thereby having high bonding strength, overcoming the drawbacks in various coating processes at home and abroad, leading the coating layer to avoid the defects of shrinkage cavities, inclusion, cracking, shedding and the like and having the advantages of high heating temperature, fast speed, high production efficiency, small energy consumption, simple preparation process and low cost.

The invention relates to pie and a preparation method thereof, in particular to good-color pie and a preparation method thereof. The invention provides good-color pipe stuffed with various fillings and having colorful wrappers and a preparation method thereof. The good-color pie provided by the invention is a flaky pie body composed of wrappers and fillings, wherein three or more areas spaced by the wrappers are arranged on the plane of the pie body; and each area is composed of wrappers and fillings coated in the wrappers. The preparation method provided by the invention comprises the following steps: making crescent dumplings by using wrappers of one or more then two different colors and filling with one or more flavors; spreading water on the back of the dumplings, and kneading the dumplings together back to back to form a pie; and finally steaming kneaded dumplings or baking with a pen or an oven, or steaming and then baking the kneaded dumplings after steaming till the pie is cooked.

The invention provides an expandable master batch. The expandable master batch comprises: (1) carrier resin being one or more of ethylene-vinyl acetate copolymer, ethylene-butyl acrylate copolymer, ethylene-methyl acrylate and low density polyethylene; (2) crosskicking agent; (3) antioxidant; (4) foaming agent; and (5) blowing promoter. The invention also provides an expandable material manufactured by the expandable master batch and a manufacturing method thereof.

The invention relates to a micro-nano-alloy bimetal composite material preparation technique and a device thereof; one of wear-resistant and corrosion-resistant ferrous metal material, non-ferrous metal material and various self-fluxing alloy is prepared into power; then, the powder is added with less than or equal to 0.8% of one or combination in CeO2, Y2O3 and La2O3, 0.3-1.5% of MgO, 0.3-1.8% of CaF2, 0.0-1.5% of B, 0.1-0.8% of Nb, 0.1-1.0% of Ti, 0.1-2.0% of grain refining and recrystallization inhibitor according to the mass percent; or the powder is added with 1-40% of carbide, nitride, micro-nano or nano particles of boride; and the mixture is put into a high-energy stirring ball grinding mill for grinding and ball milling, so that the micro-nano or nano alloy powder can be prepared. A variable frequency induction heating device is adopted for cladding and melting vacuum or inert gas, so that a workpiece can be melted and coated with a micro-nano or nano scale alloy cladding layer which has the grain size of 0.1-35mm and is wear-resistant and corrosion-resistant, and the bimetal composite material can be prepared. The invention overcomes the defects in various coating techniques in China at present, can complete the preparation of the workpiece with the cladding layer having high thickness for once, does not need repeated coating and sintering, has high material utilization rate, low machining allowance and preparation cost, simple preparation technique and high production efficiency.

The invention provides preparation of a graphene polyaniline modified carbon cloth electrode material, and a method for accelerating the acclimation of a bio-anode, and relates to electrode preparation and bio-anode acclimation. A purpose of the present invention is to solve the technical problem of poor electron transfer efficiency of existing bioelectrochemical anode. The graphene polyaniline modified carbon cloth electrode material preparation method comprises: loading graphene oxide onto a carbon cloth, immersing into a sodium borohydride solution, reducing, immersing into an aniline monomer solution, adding a curing agent solution in a dropwise manner, and polymerizing to obtain the graphene polyaniline modified carbon cloth electrode material. According to the present invention, with the application of the graphene polyaniline modified carbon cloth electrode material as the anode in the bioelectrochemical system reactor, the operation is performed after the starting until the output potential is stable so as to complete the acclimation; and the graphene polyaniline modified carbon cloth electrode material can be used in wastewater treatment.

The invention relates to bulky-grain rare earth carbonate and a preparation method and application of carbonate, and belongs to the technical field of powdered material preparation. The method comprises the steps of taking sodium carbonate as a precipitant, adding sodium carbonate to rare earth material liquid containing a high-polymer dispersing agent, ageing, washing, filtering, drying, and obtaining rare earth carbonate with a central gain size D50 of 50-202 micrometers, wherein grains are spherical and distributed uniformly. According to the bulky-grain rare earth carbonate and the preparation method and the application of carbonate, the technology is simple and easy to control, the dispersity and filtering performance of sediment in a technology process are good, the technological production is facilitated, the cost is low, no pollution is caused, rare earth carbonate can be further prepared to bulky-grain rare earth oxide with a central grain size D50 of 30-103 micrometers, and the grains are spherical and distributed uniformly.

The invention discloses a plugging agent and a preparation method thereof. The plugging agent comprises a composition of a water-soluble hydrophobic associated polymer or a water-soluble hydrophobic associated polymer. The preparation method of the plugging agent is a copolymerization cohydrolysis method or a copolymerization posthydrolysis method. The plugging agent easily enters a leakage layer and has good viscoelasticity, so that the plugging agent can pass a throat and expand to fill a leakage crack and a solution cave space, meanwhile, can automatically stop flowing in the leakage layer and is unlikely to mix with oil, gas and water, thus a gel 'slug' with high viscosity and gel strength, which is capable of separating fluid in formation from fluid in a shaft, is formed; and the slug has enough starting pressure difference greater than the difference between the pressure of a mud column and the pressure of the formation fluid so as to achieve the purpose of plugging. The plugging agent and the preparation method thereof can be used for effectively solving various serious leakage and have good application value and social value.

A fiber wadding for filling bone defects having a flocculent three-dimensional structure is disclosed. The fiber wadding includes a plurality of fibers that contain a biodegradable resin as a principal component and a siloxane. Outside diameter of the plurality of fibers of the wadding is from about 0.05 μm to about 30 μm. Bulk density of the fiber wadding is about 0.005-0.3 g / cm3.

The invention discloses a hydraulic system of a continuous string coiled tubing unit, consisting of an injection head hydraulic subsystem and a barrel hydraulic subsystem, wherein, the injection headhydraulic subsystem is a closed volume speed-modulating system and is composed of a two-way variable plunger pump, a quantitative radial plunger motor, a spillover valve, an oil filter, a cooler, an auxiliary slippagepump and a safety valve A; the barrel hydraulic subsystem is an open volume throttling speed-modulating subsystem and is composed of a load-sensitive pump, a manual proportional valve, a barrel motor, a variable back pressure valve and a safety valve B. As the injection head hydraulic subsystem in the invention uses the closed volume speed modulating, throttling power loss is zeroand spillover power of passing through the spillover valve has small loss; as the barrel hydraulic subsystem uses the open volume throttling speed modulating, the spillover power loss is zero and thethrottling power loss is small. Therefore, the whole system features high efficiency, small calorific power, small power loss and high precision of system transmission.

The invention relates to an?ecological soil sampler, and in order to solve the problems of difficult sample output after sampling, easy disturbance of soil layers, easy change of soil biological patterns and easy biomass loss existing in existing soil collectors, the invention further provides a completely split type rapid ecological soil sampler. Two plug pins are inserted into two jacks correspondingly to fixedly connect a first semicylindrical body and a second semicylindrical body into a complete sampling cylinder. Two inverted L-shaped sockets that are centrosymmetric with respect to a socket pipe cap central axis are processed on the lower outer wall of a socket pipe cap. A handle is in threaded connection with the upper end of an upright pipe through a second pipe hoop, and the upright pipe lower end is fixedly connected to the center of the socket pipe cap upper end. The upper end of the sampling cylinder is sheathed on the lower end inner wall of the socket pipe cap, and a first cylindrical pin and a second cylindrical pin are respectively clamped in the two inverted L-shaped sockets of the socket pipe cap. The ecological soil sampler provided in the invention is used for collecting ecological soil samples.

A plurality of input devices each includes a speaker, operation data transmitting means, voice data receiving means, and voice controlling means. An information processing apparatus includes voice storing means, object displaying means, operation data acquiring means, pointing position determining means, object specifying means, voice reading means, and voice data transmitting means. The pointing position determining means specifies, for each of the input devices, a pointing position on a screen based on operation data transmitted from the operation data transmitting means. The voice reading means reads voice data corresponding to the pointing position for each of the input devices. The voice data transmitting means transmits the voice data to each of the input devices. The voice controlling means outputs voice from the speaker based on the voice data.

The invention belongs to the technical field of wastewater treatment and particularly relates to an ultraviolet light ozone reaction process and an ultraviolet light ozone reaction device. The ultraviolet light ozone reaction process comprises the following steps of: a) pretreating; b) mixing gas and liquid; c) performing ultraviolet (UV) reaction; d) filtering by using active carbon; e) filtering by using a biological filter tower; and f) discharging water. By using a nano gas bubble pump, the wastewater and ozone and air in the nano gas bubble pump can be fully nixed, and countless micro gas bubbles of which the diameters are 10 to 50 microns are generated; the micro gas bubbles are stable in performance and high in gas-liquid mixing ratio, and are not aggregated easily and fractured; the gas-liquid contact area of the device is hundreds of times that of the conventional aerator and the like, so that the reaction speed of the device is hundreds of times that of the conventional aerator and the like; and the residual ozone in the wastewater is filtered by the active carbon, and treatment of tail gas is eliminated. The process and the device are high in ozone utilization rate and good in treatment effect, the reaction speed is high, and the produced water is clear.

The invention discloses a gating system of a large-section iron casting for an medium pressure external cylinder in a steam turbine; the gating system comprises a weighing ladle, a sprue, a runner and an ingate, the runner consists of an upper runner and a lower runner, a refractory ceramic filter is arranged between the upper runner and the lower runner, the minimum sectional area ratio of the sprue, the runner, a transition sprue, a transition runner and the ingate is 1.2:1.34:1:1.07:1.24; the sprue, the upper runner and the lower runner are arranged at the middle part of the casting, and the ingate of an ingate is arranged at the inner wall of an axle hole of the casting; and the gating system of the structure mainly plays a role in buffering, decompressing and steady entry of melted iron, the molding sand in the scour cast is avoided, the casting is heated evenly, with the advantages of being not easy to be mingled with impurities, carry sand, produce air gaps and cracks.

The invention provides a conical superfine grinding grading machine which can improve the grinding capacity, the grinding effect and the grinding efficiency, effectively produce a superfine powder product and increase the product yield. A cone is in a conical shape with large top and narrow bottom, a grading shaft penetrates through the bottom end of the cone to be arranged inside the cone, one end of a sleeve is installed onto the grading shaft in the cone through a bearing and held down by a compression nut, the other end of the sleeve is installed on the extending end of the grading shaft through a bearing, two opposite sides of bearings on two ends of the sleeve are respectively provided a washer in a pressing manner, the other side of each bearing is provided with an ejector ring in a pressing manner, a sleeve belt pulley is installed on the extending end of the sleeve in a sleeved manner, a grading belt pulley is arranged on the extending end part of the grading shaft in a sleeved manner, a crushing tray is fixed on the sleeve on the inner lower end of the cone through the cooperation of a bushing and a lower bearing and compressed onto the cone through a bottom gland, the crushing tray and the corresponding cone are respectively provided with grinding rod pins which are distributed in a staggering manner and provided with helical grooves, and a crushing barrel with conical teeth and a crushing ring with conical teeth, which is correspondently installed on the inner wall surface of the cone, are alternately arranged.

The invention relates to an automatic milling device and a milling method thereof. The milling device comprises a control structure and at least one charging barrel assembly. The control structure comprises a driving assembly and a connection structure. The driving assembly is connected to the connection structure. The charge barrel assembly comprises a charging barrel body, a grinding head fixedly connected to the charging barrel body, and a grinding sleeve that is rotatingly connected to the grinding head. A groove is arranged in the charging barrel body. The connection structure is snappedin the groove. The grinding head is embedded in the grinding sleeve. The grinding head and the grinding sleeve form a stock bin for storing materials. The driving assembly drives the charge barrel body to rotate through the connection structure. The charging barrel body drives the grinding head to rotate. The grinding head moves relative to the grinding sleeve so as to crush materials between thegrinding head and the grinding sleeve into powder. The provided automatic milling device can grind multiple materials by adopting different grinding sleeves and grinding heads. Furthermore, the impurities are reduced, and the original taste of materials is maintained.

A fine particle uniformly holding a substance having a catalytic influence on a surface. Sputtering is performed by agitating or rotating the fine particles 3 in a vacuum container 1, which has a polygon inner cross-section shape, by rotating the vacuum container 1, having a rotating axis almost vertical to the cross-section, and the surfaces of the fine particles 3 are coated with super-fine particles having a smaller particle diameter than that of the fine particle, or a thin film. The super-fine particle or the thin film is composed of at least a metal catalyst or an oxide catalyst or a composite catalyst.

The invention relates to an asymmetric supercapacitor with potassium ferricyanide and potassium ferrocyanide added to two electrode chambers respectively and a preparation method of the asymmetric supercapacitor. According to the asymmetric supercapacitor and the preparation method of the asymmetric supercapacitor, the potassium ferricyanide is added to the positive electrode chamber, the potassium ferrocyanide is added to the negative electrode chamber, and the positive electrode chamber and the negative electrode chamber are separated by an ion exchange membrane and assembled into a single supercapacitor or a multi-body supercapacitor bank. Solid electrodes and liquid electrolyte provide capacitance simultaneously to achieve organic combination of the supercapacitor and a flow battery. The positive electrode of the capacitor achieves pseudocapacitance overlapping of cobaltous hydroxide and the potassium ferricyanide; the negative electrode of the capacitor achieves pseudocapacitance overlapping of an activated carbon electrical double-layer capacitor and the potassium ferrocyanide. Thus, the asymmetric supercapacitor has quite high energy density. In the negative electrode chamber, K4Fe(CN)6 is selected as a reducing agent, so self discharge is reduced, and the stability of the capacitive performance of the capacitor is improved.

The invention relates to the technical field of optical thin films, in particular to a multilayer compound prism lens used for a backlight module and a preparation method thereof, aiming at overcoming the defect of film damage caused by mutual movement and friction among all films of the existing backlight module or decreasing of the qualification rate of the backlight module caused by dust entering among the films and scrap resulting from cutting, and relieving an interference phenomenon of a prism lens. The invention provides the multilayer compound prism lens and the preparation method thereof. The compound prism lens comprises a lower prism lens, an adhesive layer and an upper prism lens, wherein the upper prism lens and the lower prism lens comprise a prism lens base material respectively; a microprism structure is arranged on each prism lens base material; the upper prism lens and the lower prism lens are compounded together through the adhesive layer; and moreover, the directions of the upper prism lens and the lower prism lens are perpendicular to each other. The multilayer compound prism lens provided by the invention has an excellent optical effect; meanwhile, the yield of the backlight module can be improved and the procedures of assembling and cleaning can be omitted; and the preparation method of the multilayer compound prism lens is simple in technology and easy to operate.

The invention discloses an external used medicine and process for preparation, which comprises the components as following, raw rheubarb, coptis chinesis, honeysuckle, polygonum ciliinerve, raw gardenburnet, phellodendron bark, radix notoginseng, polygonum cuspidate, astragalus, lithospermum, safflower, myrrh, olibamum, margarita, camphol, zine oxide, and sesame oil, and is processed in steps. The invention sinks gauze dressing in the form of oil solution, and then is stuck on wound, thereby reducing the water evaporation of wound, preventing wound infection, and avoiding wound incrustation,and the effusion of wound can easily mix with the finish oil gauze, which is beneficial for wound drainage, and largely relieves sufferings of burn patients. The invention is an externally used medicine for treating burn wound, which has short course of treatment, fast effect, strong safety, excellent repair virtue for wound, few scars after curing, and no side effect.

The invention discloses a preparation method of 6-aminocaproic acid which is a hemostatic. The preparation method is characterized in that caprolactam is dissolved in diluted hydrochloric acid, heated and refluxed to produce 6-aminocaproic acid hydrochloride which is neutralized by spherical macro-porous styrene type weak alkaline anion exchange resin, thereby acquiring the product after treatment. Compared with other preparation methods, the reaction condition of the method is mild, and metal ion can not be mixed easily, the method is more scientific and rational, the standard of the burn residue required by the original material quality can be realized more easily, white crystal can be obtained from the product without activated carbon decolorizing, the operation is simple, the synthesizing cost is reduced and mass production of the technology is more suitable.

The invention discloses a passion fruit linear type filling machine. The passion fruit linear type filling machine comprises a conveying mechanism, a stirrer, a filling mechanism and metering cylinders. The conveying mechanism is installed on the transverse front side of the upper end of a base, and a bottle opening limiting mechanism and the filling mechanism are installed on the front side and the rear side of the middle of the conveying mechanism. The filling mechanism is connected to the discharging ends of the metering cylinders through pipelines, and the feeding ends of the metering cylinders are connected to the bottom of the stirrer. The stirrer is fixedly connected to the rear side of the base through a supporting frame, piston rods of the metering cylinders are connected with a metering adjusting mechanism, and the metering adjusting mechanism is installed on the base. The metering adjusting mechanism in the passion fruit linear type filling machine adjusts the stir uniform feeding of the stirrer and the discharging operation of the metering cylinders and controls the feeding operation of the metering cylinders, and after the metering cylinders are filled with passion fruit juice, the filling mechanism is controlled to multiple filling bottles conveyed by the conveying mechanism to conduct discharging and filling operation. The bottle opening limiting mechanism is adopted to conduct automatic quick limiting, the bottles are pushed to the filling positions to be subjected to quick filling, and therefore the bottle output waiting time is shortened, and the production efficiency is improved.

The invention discloses a waterproof and suncare straw wood composite high density fiberboard. The waterproof and suncare straw wood composite high density fiberboard is characterized by being prepared by the following raw materials in parts by weight: 42-45 of crop straws, a proper amount of sodium hydroxide with a concentration of 2%, 2-2.5 of silane coupling agents kh450, 66-70 of ethanol with a concentration of 95%, 30-32 of wood leftovers, 3-4 of methyl sodium silicate, 3-5 of nanometer titanium dioxide, 7-8 of waterborne polyurethane adhesive, 1.5-2 of microcrystalline wax, 0.03-0.05 of ammonium persulfate, 2-3 of methacrylate, and a proper amount of water. The methyl sodium silicate is added when fibers are treated in the formula, the methacrylate, the microcrystalline wax and the like are added when the fibers are glued, and the raw materials coact to greatly enhance the product water resistance and to prevent the corrosion caused by water seepage; and meanwhile, the suncare nanometer titanium dioxide is added, so that the produced product can replace a plastic board or a wood board, or even can be used outdoors.

The invention relates to a water sampling device used in research of geoscience and environmental science, and particularly relates to a vertical stratification water sample synchronous sampling device and a sampling method thereof. The device is of a frame structure consisting of four vertical strip square columns and an upper horizontal sealing surface and a lower horizontal sealing surface, other surfaces are open, the frame is a hollow cube, vertical through clamp slots are formed in two adjacent vertical surfaces of the two vertical strip square columns facing the center of the cubic frame structure, sealing movable panels are inserted between every two vertical clamp slots, the sealing movable panels comprise a front panel, a rear panel and side panels at two sides, four vertical surfaces of the cube are sealed and wrapped so as to form a hollow inner cavity, the cube is divided into layered sealing interlayers by anti-leaking flexible partition clothes layers and the sealing movable panels, sampling holes are respectively formed in sealing movable panels of each equal distance sealing interlayer, two ends of the transverse clamp slot are connected with the front panel and the rear panel, and the transverse clamp slots are arranged with equal intervals in a mobile guide slot of the joint part of the side plate and the sealing movable panel.

The invention relates to a sanitary fitting containing an assembly of several light sources for illuminating water that flows out of or into the sanitary fitting, said light sources generating light of different colors. According to the invention, collecting optics are positioned upstream of the light sources to focus and mix the light that is generated by the light sources. This permits the generation of intensive mixed colors, which, for example, can illuminate the interior of a shower jet.

The invention provides a preparation method of a double-layer or multi-layer metal composite pipe blank. The preparation method comprises the steps that the upper ends of a pretreated inner metal pipe and a pretreated outer metal pipe and the lower ends of the pretreated inner metal pipe and the pretreated outer metal pipe are fixed to circular seams of an upper sealing flange and a lower sealing flange respectively, and a casting cavity is formed between the inner metal pipe and the outer metal pipe; a casting device and an air inlet and exhaust device are arranged through the upper sealing flange to carry out exhausting and preheating on the casting cavity; metal melt is poured into the casting cavity to form a composite pipe blank; and the composite pipe blank is cooled and finished, and the excellent composite pipe blank is obtained. According to the method, the double-layer or multi-layer metal composite pipe blank which cannot be produced through existing methods and is provided with a solid-liquid phase metallurgical bonding interface can be prepared, and the technological method has the beneficial effects of being simple in technology, low in manufacturing cost, good in interface bonding quality of the composite pipe blank, high in yield, capable of being used for preparing various double-layer or multi-layer metal composite pipe blanks and the like.

The invention relates to a preparation method of zinc oxide pressure-sensitive ceramic slurry and a pressure-sensitive ceramic resistor material. The preparation method comprises the following steps: weighing raw materials including main raw material ZnO and additives; adding water to proportionally prepared additives, and ball-milling for 1-4 hours; and putting the weighed ZnO, milled additives, pure water and mixing assistant into a mixing tank, quickly dispersing in a homo-mixer for 20-60 minutes, opening the valve, starting a pipeline type high-shear dispersion emulsion machine to circularly disperse for 1-3 hours, driving into a liquid storage tank, and starting a basket type mill to mill for 2-4 hours, thereby obtaining the slurry. The zinc oxide pressure-sensitive ceramic resistor material comprises the following components in percentage by mol: 93-95% of ZnO, 0.6-0.9% of Bi2O3, 0.9-1.3% of Sb2O3, 1.0-1.3% of Co2O3, 0.5-0.8% of MnCO3, 0.5-0.8% of Cr2O3, 0.5-0.8% of NiO and 1.0-1.5% of SiO2. The invention has the advantages of simple preparation procedure and high efficiency, and impurities can not be easily incorporated in the manufacturing process. The prepared slurry is even and stable and has favorable flowability.

The invention discloses an intelligent automatic air sampling device used for occupational health. The intelligent automatic air sampling device comprises a sampling device shell, wherein an air quality sensor is embedded on the surface of the sampling device shell; the sampling device shell is internally provided with a main pipe and a secondary pipe; one end of the main pipe is communicated with an air inlet pipe at the outer part of the sampling device shell; the other end of the main pipe is connected with one end of the secondary pipe; a gas analyzer is mounted at the connection part of the main pipe and the secondary pipe; the secondary pipe is provided with a gas compressor and the other end of the secondary pipe is connected with a flow distribution pipe; a plurality of sampling tanks are mounted at a flow distribution hole of the flow distribution pipe; solenoid valves are mounted at the connection parts of the flow distribution hole of the flow distribution pipe and the sampling tanks; a wireless communication device is further mounted in the sampling device shell; a controller is mounted on the side face of the wireless communication device; the controller is electrically connected with the air quality sensor, an exhaust fan, the gas analyzer, the gas compressor, the solenoid valves and the wireless communication device; and the wireless communication device is wirelessly and electrically connected with a remote control terminal.

The invention discloses a Na3Y3(BO3)4 compound, a Na3Y3(BO3)4 nonlinear optical crystal as well as a preparation method and application of the nonlinear optical crystal. The compound is prepared through a chemical synthesis method; the crystal is prepared through a molten-salt growth method; the prepared Na3Y3(BO3)4 crystal is high in nonlinear optical effect and wide transmittance range, good in mechanical performance, free from hygroscopy, easy for processing and preserving, and applicable to laser frequency conversion within blue and green light bands; the Na3Y3(BO3)4 crystal can be used for producing nonlinear optical devices; a Nd: YAG Q-switched laser is taken as a light source at room temperature to receive infrared light at wavelength of 1064nm and to output green laser at wavelength of 532nm, and laser intensity is 2-4 times as much as potassium dihydrogen phosphate (KDP).

The invention provides a preparation method of visible-light response nano La / Ni-SrTiO3. The method includes the following steps that firstly, an aqueous solution containing strontium nitrate, lanthanum nitrate and nickel nitrate is mixed with a citric acid aqueous solution, and a solution A is obtained; butyl titanate is dissolved in ethylene glycol to obtain a solution B; secondly, the solution B is dropped in the solution A at a constant speed, and sol is obtained; thirdly, the sol is heated and stirred, and wet gel is obtained; fourthly, a potassium hydroxide solution with the concentration being 5 mol / L is added into the wet gel, and a mixture is obtained; fifthly, the mixture is contained in a high-pressure kettle, and heat preservation is performed for 20-24 h at the temperature of 200 DEG C; sixthly, obtained matter is dried after being washed, and nano La / Ni-SrTiO3 is obtained. Elements can be well added into SrTiO3 through a sol-gel hydrothermal method, and an obtained sample has remarkable responses on visible light. The method is simple in preparation technology, low in cost and high in yield, the diameter of the obtained product reaches nano scale, and the obtained product is evenly distributed.