57results about How to "Accelerate evaporation" patented technology

This invention discloses a high-purity hydrogen production device, comprising: an evaporation module, a reforming module, and a purification module; the temperature of the medium within the evaporation module, reforming module, and purification module gradually increases, and heat from the high-temperature module can be transferred to the low-temperature module; the evaporation module has multiple heat exchange plates, and a partition is provided between adjacent heat exchange plates, dividing the space between adjacent heat exchange plates into a preheating space and an inflow space; the reforming module has several reforming channel groups, which are connected to the evaporation module by a gradually narrowing channel; the purification module has purification channels, and several hydrogen permeable membranes are provided within the purification channels; the purification channels are connected to the reforming channel groups; the purification module passes sequentially through the reforming module and the evaporation module, so that the purification channels can transfer heat with the reforming module and the evaporation module. This allows for thermal coupling between multiple modules, enabling gradient energy utilization and solving the problems of uneven heating within the reforming reaction chamber.

This invention relates to the field of chlor-alkali electrolysis equipment, and more particularly to an assembly of independent unit bipolar ion-exchange membrane electrolyzers, comprising an assembly frame and multiple fixed frames. The assembly frame supports the fixed frames, and independent unit electrolyzers are mounted on the inner sides of each fixed frame via fixing bolts. Each independent unit electrolyzer includes a frame, with a composite plate fixedly connected to the center of the frame. The composite plate separates the cathode chamber and the anode chamber on both sides of the frame. Anode ribs are fixedly connected to the interior of each anode chamber, and an anode mesh is installed at the end of each anode rib away from the composite plate. This invention creates forced disturbance to the solution inside the anode chamber during continuous replenishment of refined brine, significantly improving solution mixing and flow efficiency, allowing the brine to fully contact the electrodes, and enhancing the completeness of the electrolysis reaction. Compared to traditional passive flow methods, the solution circulation effect is significantly improved.

The utility model discloses a kind of recovery devices of ethanol in diene mother liquor, including several material tanks of series connection, conveying pump and heating pipe for heating mother liquor being set between the place of adjacent two material tanks, driving mechanism and stirring mechanism are equipped on material tank, stirring mechanism includes impeller and several stirring rods, driving mechanism is used to drive impeller and stirring rod rotation, impeller is stirred mother liquor in axial by self rotation, stirring rod is stirred mother liquor in radial by self rotation. The utility model lets mother liquor circulate in multiple material tanks, can be fully separated ethanol in mother liquor by multiple heating treatment, and after being injected into every material tank, mother liquor can be fully heated under the stirring effect of impeller and stirring rod, so that the mother liquor added later can be quickly heated, to promote ethanol evaporation and discharge, so the device can continuously process mother liquor, so that the process of recovering ethanol from mother liquor has higher efficiency.

This utility model discloses a pressing device for circuit boards, relating to the field of circuit board technology. A movable component is fixedly installed inside the frame, and a cleaning component is fixedly installed on the inner wall of the frame. A pressing component for pressing the circuit board and aluminum sheet is installed on one side of the cleaning component. The pressing component includes a support frame fixedly installed on the inner wall of the frame, a drive cylinder fixedly installed on the top of the support frame, a pressing head fixedly installed at the output end of the drive cylinder, and a telescopic rod rotatably installed on one side of the pressing head. The circuit board and aluminum sheet are bonded together using 3M 9079 adhesive. The circuit board is an FR4 circuit board. This utility model solves the deformation problem caused by the inconsistent expansion coefficients of FR4 circuit boards and aluminum sheets after SMT high-temperature reflow soldering by using 3M 9079 adhesive to bond them together, ensuring the flatness and stability of the finished product, and improving the soldering quality of electronic components on the circuit board.

The utility model relates to PCB board processing technical field discloses a kind of PCB soft board processing heat curing equipment, including the processing box for the storage of PCB soft board, the lower end of the processing box is fixedly connected with the support frame for supporting processing box, hot air component for drying and curing to PCB soft board is installed in the processing box, and placing assembly for fixing PCB soft board is installed between the hot air component. The utility model realizes two-way heating by the hot air disc of symmetry up and down, makes PCB soft board double side synchronous heating, forms uniform temperature field, effectively prevents one-sided heating deformation, improves solvent evaporation and resin curing efficiency, and adopts knob type clamping mechanism cooperation rotation design, so that board material rotates at uniform speed in curing process, realizes three-dimensional heating, eliminates local overheating phenomenon, and heating uniformity deviation is lower, prevents material thermal deformation.

The invention relates to the technical field of high polymer material processing, and discloses a supercritical CO2 assisted devolatilization and microcellular foaming integrated method for preparing optical-grade PMMA (polymethyl methacrylate), which comprises the following steps: conveying a PMMA prepolymer containing a residual methyl methacrylate monomer into a high-pressure reaction kettle to be in contact with supercritical CO2 and saturated; then, the saturated melt is subjected to rapid pressure reduction, CO2 dissolved in the melt is separated out to form a micropore structure, and residual monomers are synchronously brought out; and cooling and shaping to obtain the optical-grade PMMA material. By adopting the method disclosed by the invention, integrated preparation of efficient removal of PMMA residual monomers and micropore lightweight forming can be realized at a lower processing temperature, and the obtained material has lower residual monomer content, lower density, higher light transmittance and lower haze.

The invention discloses a production device of a small-hole polymer coordination adsorbent, and particularly relates to the technical field of adsorbent production.By arranging a flow divider, an entered reaction liquid is evenly distributed into a spraying unit, a coating unit and an extrusion die according to set flow and flow velocity, and spherical, film-shaped and blocky adsorbents are obtained respectively; the production of various adsorbents in different forms is realized, the spherical adsorbents are alternately sprayed through the two micro-channel plates, the spherical adsorbents are slotted, fall into the forming drainage basket and then enter the forming cavity, the spherical adsorbents are ensured to smoothly fall into the basket and keep a dispersed state, and after forming, the formed spherical adsorbents are lifted to be not in liquid any more, so that the adsorbents in different forms can be produced. The first sliding plate slides into the washing cavity on the horizontal guide rail, the formed adsorbent is subjected to multi-stage replacement washing, residual reactants on the surface and in pores of the adsorbent are removed, and the quality of a final product is ensured.

The utility model discloses an outdoor sports glove, and belongs to the technical field of sports gloves. An outdoor sports glove comprises a glove body, a ventilation window is formed in the palm center of the glove body, the surface of the ventilation window is covered with a sweat absorption belt, the sweat absorption belt is annularly arranged and arranged on the glove body in a penetrating mode, the width of the sweat absorption belt is larger than that of the ventilation window, the outer side of the sweat absorption belt is made of silica gel materials, and the inner side of the sweat absorption belt is made of porous water absorption materials. The porous water absorption material is formed by blending polyester fibers and cotton fibers, so that the inner side of the sweatband has hygroscopicity, and the abrasive resistance of the sweatband can be guaranteed. When the palm center of a user sweats, the sweat absorbing belt located at the ventilation window can absorb sweat; due to the fact that the sweatband is arranged on the glove body in the penetrating mode, the palm center and palm back positions of the sweatband are changed by pulling the sweatband, and the palm part can be kept dry. Meanwhile, the sweatband can cover the ventilation window all the time, and the hand is protected.

This utility model relates to the field of drilling equipment technology and discloses a drilling device for soil thermal desorption remediation, comprising: a base and a mounting frame, with a tensioning cylinder installed inside. The output end is connected to a guide rod via a guide frame, and a motor is installed at the bottom of the guide rod. A mounting block is coaxially mounted on the motor rotor, with a drill rod and drill bit mounted at its bottom. A fan is located inside the mounting block. A resistance heating element is installed inside the drill rod, and a soil parameter sensor group is mounted on its surface. A temperature regulation module is located on the surface of the sensor group. This device achieves efficient drilling by driving the drill rod and drill bit to rotate with the motor; the resistance heating element inside the drill rod directly heats the soil during drilling, promoting the volatilization of pollutants and improving the efficiency of thermal desorption remediation; the soil parameter sensor group monitors soil parameters in real time, and the temperature regulation module adjusts the heating temperature accordingly to achieve precise temperature control and ensure the remediation effect; the fan accelerates the diffusion and discharge of volatilized pollutants. This effectively improves the efficiency and quality of soil thermal desorption remediation.

The utility model relates to the technical field of boilers, in particular to a full-premixing combustion water-fire tube steam boiler which comprises a boiler body, a full-premixing combustor is installed on the outer portion of one side of the boiler body, an upper boiler barrel is installed on the upper portion of the boiler body, a lower boiler barrel is installed on the lower portion of the boiler body, and a hearth is arranged in the boiler body and close to the full-premixing combustor. An upper smoke collecting chamber is installed at the top of the upper furnace barrel, a lower smoke collecting chamber is installed at the bottom of the lower furnace barrel, a plurality of heat exchange sleeves are vertically installed in the furnace body, each heat exchange sleeve comprises an inner pipe and an outer pipe, the inner pipes are located in the outer pipes, and one side of the lower smoke collecting chamber is communicated with the interior of the furnace body. According to the fully premixed combustion water-fire tube steam boiler, the fully premixed combustion technology is adopted, fuel and air are fully mixed according to a certain proportion before combustion, uniform combustible mixed gas is formed, combustion is more sufficient, and the combustion efficiency is improved. The full-premixing combustor is reasonable in design, suspends in a limited space behind a combustion plane, adapts to a smaller hearth space, and meanwhile guarantees stability and uniformity of combustion.

The utility model discloses a fragrance carrying structure for heating stove relates to heating stove accessory technical field, including the recess that sets up in the top of heating stove body, still includes installation stove and baffle, the through -hole that recess inside sets up is communicated with the through -hole of heating stove body, and installation stove is installed in the recess, and installation stove bottom sets up and admits the air hole, and the air hole corresponds with the through -hole, and the inside fixed mounting of installation stove has the liquid storage frame, the technical scheme provided by the utility model, adopt the design of installation stove, when need using the function of aromatherapy, make the air inlet hole of installation stove bottom and the through -hole in the recess accurate correspondence, finally install the top cap in the top of installation stove, and the hot air flow that heating stove body inside generates enters installation stove through the through -hole and the air inlet hole, and the heat -conducting piece evenly transmits the heat to the aromatherapy liquid, and accelerates the aromatherapy liquid evaporation, and the aromatherapy gas that evaporates is discharged installation stove through the vent hole on the top cap, and diffuses to the indoor environment, realizes the synchronous operation of heating and aromatherapy function.

The utility model discloses an environment-friendly plate formaldehyde removing and permeating device which comprises a box body, a supporting frame is arranged at the bottom end of the interior of the box body, a limiting frame is arranged at the top end of the interior of the box body, a plurality of containing roller sets are arranged on the limiting frame and the supporting frame in a matched mode, and a plate body is arranged between the upper containing roller set and the lower containing roller set. Spraying pipes are arranged at the tops of the two sides of each containing roller set, atomizing nozzles are arranged on the spraying pipes towards the plate body, liquid supply assemblies are connected to the spraying pipes, a hot air supply structure is connected to the bottom end of the side wall of the box body, an air outlet pipe is arranged at the top of the box body, a reaction box is connected to the tail end of the air outlet pipe, and the reaction box is filled with reaction liquid. According to the formaldehyde removal device for the board, the sufficiency and the convenience of formaldehyde removal of the board body can be improved, and the formaldehyde removal effect of the board is improved.

This utility model discloses a girl's underwear, including a front panel and a back panel. An inner layer of fabric is sewn onto the inner surface of the front panel to form a cup. The edges of the cups are sewn together to form a sealing edge. Two cup pads are filled between the inner layer of fabric and the front panel. Multiple equidistant silicone strips are provided on the outer surface of the sealing edge. Adjacent silicone strips form a groove with a width equal to the width of the silicone strip. The silicone strips protrude from the outer surface of the sealing edge by 0.5 mm to 1 mm. The girl's underwear provided by this utility model has a sealing edge at the cups that is less likely to leave salt stains on the inner surface of the garment, and its shoulder straps are less likely to slip off. This girl's underwear belongs to the field of underwear technology and is applied to girls' close-fitting wear.

The utility model relates to a rapid oil gas leakage collecting device, which belongs to the technical field of oil gas storage and transportation, and comprises a box body, an inner cavity is fixedly connected in the box body, a filtering structure is arranged in the inner cavity, and a cooling structure is arranged on the outer side of the inner cavity. The cooling structure comprises a second conveying pipe spirally fixed outside the inner cavity, a sealing cover is installed at the top end of the box body, the top end of the sealing cover fixedly communicates with a feeding pipe, a plurality of inclined plates are fixedly connected to the inner wall of the feeding pipe, and the inclined plates are arranged in a staggered mode; the filtering structure comprises a first filtering net and a second filtering net which are arranged on the inner wall of the inner cavity, a plurality of fixing grooves are formed in the inner wall of the inner cavity, and a plurality of supporting blocks are fixedly connected to the upper surface of the first filtering net and the upper surface of the second filtering net. And the whole is cooled through cooperation of the water tank, the water pump, the first conveying pipe and the second conveying pipe.

The application discloses an infrared in-situ transmission sample assembly and an infrared transmission detection system. The infrared in-situ transmission sample assembly comprises a temperature-controllable heating tube, a metal tube sleeve and a sample support. The temperature-controllable heating tube comprises a tube main body. The metal tube sleeve comprises a main tube sleeve which is inserted into the tube main body and is electrically connected with a temperature controller. The sample support comprises a support main body which is inserted into the main tube sleeve and has a tubular structure with open ends. A groove is formed in one end of the support main body along the side surface, and the groove is used for inserting a sample to be measured so that the sample to be measured is in the pipeline of the support main body. The sample assembly can directly place the sample without loading or clamping other window materials, can avoid the breakage of the sample, is beneficial to the evaporation of a small amount of water vapor in the heating process, and thus can avoid the interference of water vapor in the measurement process. The application provides a more accurate and reliable sample accessory for the measurement and analysis of the infrared transmission spectrum.

The utility model belongs to the technical field of chemical equipment, and particularly relates to an evaporative crystallization tank which comprises a kettle body, a feeding pipe and a pure water pipeline are arranged at the bottom of the kettle body, a preheater, an evaporative heat exchanger and a separator are sequentially connected to the lower portion of the kettle body, and the lower portion of the preheater is connected with the bottom of a steam heat exchanger. A tubular heater is arranged at the lower part of the inner side of the kettle body; a vertical stirring assembly is arranged in the kettle body, penetrates through the top of the kettle body and is connected with a motor; the upper part of the kettle body is connected with a steam pipeline; the top of the kettle body is connected with a vacuum condenser; and the vacuum condenser is connected with a vacuum pump. According to the utility model, heat exchange is carried out through secondary steam at the lower part of the kettle body, and a sugar solution is heated inside and returns to the kettle body after being circulated outside the kettle, so that the mixing degree of the sugar solution and the contact area between the sugar solution and air can be increased.

This invention relates to high-performance fibers and products, and composite materials, particularly to a water-absorbing and quick-drying agent, a water-absorbing and quick-drying treatment method, water-absorbing and quick-drying fibers, and water-absorbing and quick-drying textiles. The water-absorbing and quick-drying agent of this invention is used to treat fibers or fabrics and includes: a solvent; an alcohol substance with a volume content of 1-300 g / L; and an etherified vinyl urea resin with a volume content of 1-150 g / L. The pure cotton moisture-absorbing and quick-drying fibers or fabrics produced by this invention improve the moisture absorption and quick-drying properties of pure cotton products while retaining the skin-friendly and soft characteristics of cotton fibers, thus developing a high-performance moisture-absorbing and quick-drying pure cotton fabric suitable for sportswear.

The utility model relates to an air purging organic solvent concentration appearance, including volatile cabinet, sample container fixing frame, air jet head, air pump and exhaust pipe, sample container fixing frame sets up in volatile cabinet, for placing sample container, air jet head dismounts and sets up in volatile cabinet, and sets up the top of sample container, the air supply pipe of air pump is connected with air jet head, exhaust pipe is connected with volatile cabinet, adopts the way of air flow purging organic solvent liquid surface with setting speed to organic solvent, accelerates the volatilization of organic solvent, is applicable to organic solvent volatilization and concentration, and the application scope is extensive, its air jet head can replace dismount, prevents the pollution, its operation is simple, improves the concentration efficiency, improves the environmental protection performance.

The utility model relates to the technical field of bushing supporting roller and disclose infrared drying coating device for bushing supporting roller, including base leg, the right side of base top is provided with coating mechanism. First motor drives stirring axle to rotate in coating groove, can carry out sufficient stirring to coating liquid, makes the component in coating liquid even mix, avoids the phenomenon such as precipitation or stratification, guarantees the stability of coating liquid quality. Meanwhile, the discharge pipe that coating groove bottom equidistance sets up, cooperation valve switch control device can accurately control the discharge capacity and discharge position of coating liquid, ensure that coating liquid evenly drops on coating roller, and then realize even coating to the surface of bushing supporting roller, second motor drives screw rotation, since the lifting piece is connected with screw thread, and under the limiting effect of limiting rod, the lifting piece can move up and down along with the rotation of screw. This makes the lifting frame that is connected with the lifting piece and the coating roller that is installed on the lifting frame height can be adjusted flexibly.

The utility model provides a kind of pretreatment device for chlorosilane sample detection, it is related to chlorosilane sample content detection technical field, it includes: box, buckling piece, gas storage tank, pump body, vacuum pump and pressure gauge, box is hinged with switch door, and side wall surface is respectively provided with air inlet and air outlet;Buckling piece is used to switch door buckling in the opening of box;Gas storage tank is filled with inert gas inside;Air outlet is communicated with air inlet between gas storage tank side wall surface and air inlet and is provided with air inlet pipe;Pump body is between box and gas storage tank, for pumping the gas in gas storage tank into the inside of box;Vacuum pump is equipped with the air outlet pipe of communication between air outlet;Pressure gauge is located at the top of box, for real-time display the pressure value in the inside of box.The pretreatment device can avoid the problems of sample content loss, heating operation risk, and the influence of open system on the sample to be measured during the drying process.

A kind of high-temperature evaporation equipment for manufacturing nanometer metal powder, including water-cooled barrel shell, water-cooled hemispherical shell, evaporation chamber, cooling water inlet A, cooling water cavity A, cooling water inlet C, plasma cathode column, cooling water inlet D, hemispherical shell cooling water passage, cooling water inlet B, crucible wall petal, cooling water outlet A, plasma anode terminal stud, crucible bottom, cooling water outlet B, hemispherical shell cooling water passage, barrel shell cooling water passage;Its characterized in that: the upper portion of hemispherical shell cooling water passage is equipped with cooling water cavity A;Due to the effect that the hemispherical shell cooling water flow channel of high-temperature evaporation equipment is equipped with cooling water cavity A, the gathered water can be effectively and evenly distributed to hemispherical shell cooling water flow channel and barrel shell cooling water flow channel, so that the cooling efficiency of hemispherical shell cooling water flow channel is high, which is conducive to the evaporation of metal vapor, thereby promoting the production quality of nanometer metal powder;The service life of high-temperature evaporation equipment is improved.

The application relates to the technical field of microspheres, and particularly provides a preparation method of carboxylated porous microspheres, which comprises the following steps: adding a biocompatible polymer, an acrylic copolymer and an oil-soluble emulsifier into an organic solvent to be dissolved and prepared into a dispersed phase; adding a water-soluble emulsifier and / or a protective colloid into water to be prepared into a continuous phase; mixing the dispersed phase and the continuous phase to obtain an emulsion, continuously stirring until precipitation appears, collecting the precipitation, cleaning, drying and obtaining the carboxylated porous microspheres. In the continuous stirring stage, air blowing or a crosslinking agent can be added. The carboxylated porous microspheres have good fluidity and good nucleic acid extraction and purification effects.

The utility model provides a kind of chlorination tower high salt tail water treatment system, belong to wastewater treatment technical field, comprising: feeding pump, feed preheater, heat exchanger and separator connected in turn;Steam outlet of the top of separator is connected with the import of compressor, and the export of compressor is connected with the steam import of heat exchanger;The crystallization material port of separator is connected with thickener, centrifuge, drying machine and salt storage tank in turn by discharging pump;The circulating material port of separator is connected with the material import of heat exchanger by circulating pump;The hot medium outlet of feed preheater is connected with cooling water tank, and the outlet of cooling water tank is connected with the bottom tail water pool of chlorination tower by water pump, and cooling water tank is equipped with cooling water make-up pipeline, and the top of cooling water tank is connected with vacuum pump;The feed inlet of separator is connected with spray pipe, and spray head is equipped on spray pipe.The system separator evaporation effect is good, and secondary steam generation is large, and high salt tail water from chlorination tower can be effectively treated, to ensure the production safety of chlorination tower.

A feces resourceful treatment system comprises a closed box body assembly and a driving shaft penetrating through the bottom of the box body assembly, a driving device is arranged at one end of the driving shaft outside the box body assembly, a feeding port is formed in the top of one end of the box body assembly, a discharging port is formed in the bottom of the other side of the box body assembly, and the bottom of the box body assembly is of a cambered surface structure. Bent-knife-shaped smashing blades fully distributed on the whole driving shaft are spirally fixed to the side wall of the driving shaft, included angles are formed between the outer ends of the smashing blades and the axis of the driving shaft, stirring blades inclining towards the direction of the discharging port are formed, and cutting edge structures are arranged on the arc-shaped edges of the outer sides of the smashing blades and the stirring blades correspondingly. And a dryer air inlet interface is arranged at the end part of the box body assembly at one end of the discharge hole. According to the device, fiber structures in excrement can be effectively broken, fiber components in excrement materials can be homogenized, water evaporation is facilitated, the water content is reduced, and favorable conditions are created for subsequent drying and fermentation.

This utility model relates to the field of traditional Chinese medicine processing technology and discloses a collector for volatile components of traditional Chinese medicine, including a support plate. A stirring tank is fixedly connected to the rear top of the support plate. A lid is installed on the top of the stirring tank, and an L-shaped plate is fixedly connected to the top of the lid. A rotating rod is rotatably connected to the inner wall of the lid, and several first stirring plates are fixedly connected to the outer wall of the rotating rod. Several through holes are formed on the inner wall of the rotating rod. In this utility model, a motor drives the first and second bevel gears to rotate, which in turn drives the rotating rod and the sleeve to rotate in opposite directions, so that the first and second stirring plates cooperate to stir, enhancing the uniformity of stirring. The rotating rod drives the fixed rod to rotate, which in turn drives the sliding rod and the scraper to rotate. The spring force keeps the scraper close to the inner wall, achieving effective scraping of the inner wall of the stirring tank. The rotating rod and the sleeve drive the first and second stirring plates to rotate synchronously in opposite directions, cooperating to stir in different directions, improving the overall stirring effect.

The utility model belongs to aromatherapy machine technical field, a kind of water heating blanket knob with fragrance, including shell, upper cover and iris mechanism, after user drops in essential oil, by magnet piece and magnet attraction realization iris mechanism and inner chamber top surface abut, at this time, rotate upper cover, to realize the adjustment of incense concentration, realize the independent adjustment of indoor fragrance concentration, so that device can adapt to different scene needs, and then so that device adaptability is higher, user can also be through the way of screw column rotation to go up and down telescopic fixed column, user can adjust fixed column height according to the size, thickness of fragrance stone, ensure that fragrance stone is stably placed, can adapt to different specifications of fragrance stone, increase the versatility and adaptability of product, in the utility model, inner chamber bottom surface is provided with honeycomb heat-conducting sheet, honeycomb heat-conducting sheet can more effectively guide and evenly distribute the heat from host controller to fragrance stone, accelerate the volatilization and diffusion efficiency of fragrance liquid.

This invention belongs to the field of axle processing and conveying technology, specifically a semi-finished axle flipping and conveying device. It includes symmetrically arranged supports on both sides. On the side of each support closest to the other, a rotating rod is mounted via a motor. A central disc is fixedly mounted at the end of each rotating rod closest to the other. Multiple telescopic plates are circumferentially fixed along the outer edge of the central disc. A hollow frame is fixedly mounted between two symmetrical telescopic plates on the two central discs. This invention uses an electric slip ring to drive the rotating ring to adjust the height of the hollow frame, ensuring precise alignment or misalignment between the active block and the blocking block. During the flipping process, the active block contacts the blocking block, driving the rocker plate and shaft linkage to flip the right-angle frame and the axle, ensuring thorough coating of the top and bottom surfaces of the axle. The hollow frame's inner cavity has a return tube connected to an air cylinder. When the hollow frame rotates, it drives the air cylinder slider into a track groove. The track groove guides the slider to press down the piston rod, causing the gas in the air cylinder to be blown onto the axle through the air supply pipe and return tube, achieving automatic drying without additional power.

The invention discloses a perovskite solar cell based on air knife assistance and a mixed solvent and a preparation method and application thereof, and belongs to the technical field of perovskite solar cells. Wherein the electron transport layer is prepared by the following method: dissolving PCBM in a mixed solvent of anisole and an alcohol cosolvent to obtain PCBM coating liquid, filling the PCBM coating liquid into a coating machine, starting the coating machine and an air knife system, and simultaneously executing coating operation and air knife auxiliary operation to form the electron transport layer; wherein the coating operation is that PCBM coating liquid is coated on a perovskite light absorption layer through a slit coating tool bit in a coating machine to form a PCBM wet film, and the air knife auxiliary operation is that air flow with controllable temperature, flow, pressure, action time and angle is jetted to the surface of the PCBM wet film through an air knife nozzle in an air knife system. Through cooperation of the mixed solvent and air knife auxiliary operation, the problem of uniform film forming is fundamentally solved.

The application belongs to the technical field of sodium hexafluorophosphate and particularly relates to a one-pot preparation process of sodium hexafluorophosphate. The one-pot preparation process of sodium hexafluorophosphate comprises the following steps: (1) reaction: anhydrous hydrogen fluoride is put into a reactor, a sodium source and a phosphorus source are sequentially added at a temperature of -60 to -20 DEG C, then the temperature is increased to 0 to 10 DEG C for reaction, volatile substances are evaporated after the reaction is completed, and a sodium hexafluorophosphate primary product is obtained; (2) neutralization: an organic solvent is added to the sodium hexafluorophosphate primary product for dissolution, then an alkaline substance is added to adjust the pH value of the solution system to 7 to 9, filtration is performed, a sodium hexafluorophosphate solution is obtained, the organic solvent is evaporated by increasing the temperature, and a sodium hexafluorophosphate crude product is obtained after drying. The one-pot preparation process has the advantages of mild conditions, simple operation, fast reaction rate, easy separation of the product, high purity and high yield of the prepared sodium hexafluorophosphate crude product, and is suitable for industrial production.