259results about How to "Remove completely" patented technology

The invention discloses a method for determining the purity of electronic-grade hexafluoroethane, and relates to the technical field of the purity of hexafluoroethane, and the method comprises the following steps: vacuumizing a specific sampling container to 10 <-3 > Pa to 10 <-2 > Pa, forming a super-hydrophobic coating on the inner wall, sampling in a temperature-controlled, humidity-controlled and pressure-controlled environment, and removing water and impurities through two-stage pretreatment; enhancing analysis by using a gas chromatograph, a specific carrier gas, a column temperature program, a micro-fluidic chip and an ion mobility spectrometry; then secondary scanning analysis is carried out by using a mass spectrometer double ion source and a calibration system; and finally, learning and matching an algorithm through a data processing system machine. Samples can be accurately collected and pretreated, gas chromatography and mass spectrometry analysis is more accurate and efficient, a data processing system can accurately determine impurities and purity, multiple measurement data can be counted and analyzed, the result reliability is improved, all parts of the system are optimized and matched, the accuracy and stability of the whole process are guaranteed, and the purity is calculated; the method further comprises statistical analysis of multiple measurement data.

The invention discloses a method for preparing a battery-grade vanadyl sulfate electrolyte by using a vanadium leachate, which comprises the following steps: S1, carrying out anion resin adsorption-desorption treatment and reduction treatment by using the vanadium leachate with the vanadium ion concentration of 1.0-20g / L as a stock solution and using a sulfurous acid solution or a saturated SO2 solution as a desorption solution to obtain a vanadyl sulfate solution with the vanadium ion concentration of 20-40g / L; the method comprises the following steps: sequentially performing extraction and back extraction on a vanadyl sulfate solution with the vanadium ion concentration of 20-40g / L to obtain a vanadyl sulfate electrolyte with the vanadium ion concentration of 80-160g / L; and S3, adsorbing the vanadyl sulfate electrolyte with the vanadium ion concentration of 80-160g / L by using an adsorbent, and filtering to obtain the battery-grade vanadyl sulfate electrolyte. According to the method, the removal of impurities in the vanadium leachate and the efficient reduction conversion and enrichment purification of vanadium ions can be simultaneously / synchronously realized, and the technical effects of improving the product quality, shortening the process flow, improving the production efficiency and reducing the production cost are achieved.

The invention belongs to the field of machining, and discloses an aviation gear part cleanliness control method, which comprehensively identifies and classifies cleanliness risk points in the whole machining process, and divides the cleanliness risk points into risk points of three key stages of pretreatment, intermediate treatment and packaging. In the pretreatment stage, initial pollution is effectively removed through polishing and oil stain particle cleaning; in the intermediate treatment stage, ultrasonic cleaning is combined with finishing machining to deeply clean and protect the surfaces of the parts, and meanwhile, a part box protective tool is adopted to ensure that secondary pollution in the turnover process is minimized; before packaging, the final cleanliness is ensured through demagnetization, residual magnetism inspection and a three-step cleaning method, and the grade is strictly evaluated. According to the method, the automation degree and the cleaning efficiency are greatly improved, the cleaning effect is remarkably improved, the cleaning cost is reduced, whole-process cleanliness control from part machining to packaging is achieved, and it is ensured that the cleanliness of aviation gear parts meets the strict requirement of the aviation field.

The invention discloses a monatomic catalyst for activating peroxymonosulfate as well as a preparation method and application of the monatomic catalyst. The catalyst comprises a nitrogen and sulfur co-doped Ti3C2Tx nanosheet and an iron monatomic or cobalt monatomic targeted on the nanosheet in an asymmetric coordination structure. The preparation method comprises the following steps: mixing the Ti3C2Tx nanosheet, a precursor containing a nitrogen source and a sulfur source, and soluble metal salt, self-assembling, freeze-drying and pyrolyzing. The monatomic catalyst provided by the invention has excellent conductivity and electronic structure, can form a large amount of reactive oxygen species in a catalytic degradation system on the premise of low addition amount of peroxymonosulfate, and has the advantages of high activation efficiency on peroxymonosulfate, capability of effectively reducing the usage amount of peroxymonosulfate and the like; the peroxymonosulfate can be activated to achieve efficient purification of organic wastewater, the operation cost of the peroxymonosulfate activation technology can be effectively reduced, and meanwhile, the new environmental pollution risk caused by the fact that a large amount of peroxymonosulfate is used can be remarkably reduced.

The invention relates to a beneficiation method for recovering fine-fraction cassiterite from table tailings, and belongs to the technical field of beneficiation. The method comprises the following steps: (1) concentrating by a thickener; (2) grading operation of a cyclone; (3) desliming treatment; (4) flotation desulfurization; (5) magnetic separation iron removal operation; (6) hydrocyclone concentration operation: feeding the iron-removed tailings into a concentration hydrocyclone for concentration to obtain hydrocyclone settled sand and hydrocyclone overflow; and (7) cassiterite flotation operation. According to the method, for fine-fraction cassiterite which is uneven in cassiterite dissemination particle size, poor in monomer dissociation degree and high in iron, sulfur and mud, the technical indexes that the fine tin grade is larger than 35%, the tin-rich middling grade is larger than 2.5%, and the comprehensive tin recovery rate is larger than 65% can be obtained.

The invention provides a preparation method of high-purity molybdenum trioxide, which belongs to the technical field of molybdenum trioxide production and comprises the following steps: S1, crushing, grinding and roasting molybdenum ore sand to obtain crude molybdenum oxide, adding the crude molybdenum oxide into a sodium hydroxide solution, heating, stirring and filtering to obtain a crude sodium molybdate solution; s2, adjusting the pH value of the crude sodium molybdate solution to 5.5-7.0, introducing the crude sodium molybdate solution into an exchange column of macroporous cation exchange resin, then adjusting the pH value of the solution to 7.0-8.5, and introducing the crude sodium molybdate solution into an exchange column filled with anion exchange resin to obtain a high-purity sodium molybdate solution; s3, excessive ammonia water is added into the high-purity sodium molybdate solution, ammonium molybdate is separated out, washing and drying are conducted, and high-purity ammonium molybdate is obtained; and S4, the high-purity ammonium molybdate is put into a rotary calcining furnace, rare earth oxide is sprayed on the inner wall of a furnace tube, and the high-purity molybdenum trioxide is prepared by adopting a calcining mode of firstly heating, then cooling and then heating. According to the invention, the purpose of producing high-purity molybdenum trioxide is realized.

The invention relates to a method for preparing artistic concrete by taking broken glass as a main raw material, which comprises the following steps of: a) treating the broken glass: cleaning recycled waste glass, and removing non-glass impurities by adopting a mechanical screening and water washing combined method; b) burdening and mixing: mixing the crushed glass slag with cement and fine sand according to a mass ratio; c) mixing and forming: putting all the materials into a concrete mixer with a speed-adjustable function, and fully stirring until the materials are uniform; then pouring the mixed concrete slurry into a pre-designed mold; and d) curing and demolding: primarily curing the poured concrete in a mold. The recycled waste glass is reasonably treated and proportioned, so that the physical and chemical properties of the concrete are enhanced, and a concrete product is more durable and stable when being used outdoors.

The invention discloses injectable hydrogel for cartilage injury repair and a preparation method of the injectable hydrogel. The gel is prepared by crosslinking 3 to 4 parts of recombinant III type humanized collagen-sodium hyaluronate gel particles, 0.5 to 1 part of thrombin solution and 4 to 6 parts of fibrinogen solution. The recombinant III type humanized collagen-sodium hyaluronate-thrombin-fibrinogen gel for injection, prepared by the preparation method disclosed by the invention, has the advantages of high elastic modulus, good biocompatibility, good needle passing performance and long in-vivo degradation period. Particularly, the recombinant III type humanized collagen-sodium hyaluronate-thrombin-fibrinogen gel for injection prepared by the invention can effectively promote regeneration of cartilage tissues, and is an innovative cartilage repair gel.

The invention relates to the technical field of building wastewater treatment, and discloses a low-carbon building wastewater separation and cyclic utilization device which comprises a treatment mechanism, a water inlet pipe, a stirring assembly, a water inlet pipe, a water outlet pipe, a water outlet pipe and a water outlet pipe, the sealing door plate is hinged to the outer surface of the treatment box body; and the slag scraping mechanism comprises a rotating shaft seat fixedly mounted in the inner cavity of the treatment box body. Floating particles on the surface of a water body are scraped and collected through a multi-layer blade rotating wheel of the slag scraping mechanism, a diatomite filtering and adsorbing medium in the collecting part is used for adsorption treatment, an isolation filter plate further intercepts residual fine particles, and the problems that the fine suspended particles are low in sedimentation speed and float on the surface of the water body are effectively solved; the solid-liquid separation effect is integrally improved, suspended particles in water are more thoroughly removed, and the water quality is remarkably improved, so that the wastewater treatment efficiency is improved, and the treatment time and cost are reduced.

The invention discloses a production method of full-fishy-smell-removed soybean milk powder, and relates to the technical field of food, and the production method comprises the following specific steps: (1) soaking: soaking soybeans in white vinegar for 14-16 days, and grinding to obtain coarse soybean milk; (2) deodorization treatment: adding a compound enzyme into the coarse soybean milk for enzymolysis and deodorization to obtain an enzymatic hydrolysate, and then sequentially adding beta-cyclodextrin and activated carbon into the enzymatic hydrolysate for deodorization treatment to obtain deodorized soybean milk; wherein the compound enzyme is composed of alkaline protease, flavourzyme and lipase; and (3) sequentially homogenizing, sterilizing and spray-drying the de-fishy soybean milk to obtain the fully de-fishy soybean milk powder. Through combined application of multiple steps and multiple technologies such as soaking pretreatment, compound enzymolysis deodorization, beta-cyclodextrin inclusion and activated carbon adsorption, the beany flavor and other peculiar smell components of soybeans can be thoroughly removed, so that the produced soybean milk powder has pure and fresh flavor, and the taste and market acceptability of the product are greatly improved.

The invention discloses a sewage treatment device for manufacturing chemical products, and particularly relates to the technical field of chemical wastewater treatment.The sewage treatment device comprises a treatment tank, a rotating mechanism is fixedly connected to the upper end of the treatment tank, a limiting mechanism is arranged on the inner surface of the treatment tank, and a scraping mechanism is arranged in the middle of the rotating mechanism; a stirring mechanism is arranged at the middle lower part of the rotating mechanism on the inner surface of the treatment tank, and an ultrafiltration membrane is fixedly connected to the lower part of the inner surface of the treatment tank. The sewage treatment device for manufacturing the chemical products, disclosed by the invention, can be used for removing heavy metal ions from sewage to be treated and collecting heavy metal ion precipitates at the same time, and can also be used for discharging sewage treated with organic matters and heavy metal ions; the sewage treatment device has the advantages that organic matters in sewage without heavy metal ions can be removed, heavy metal ion precipitates can be discharged, sewage treatment flexibility is increased, and sewage and precipitates can be separated and discharged more efficiently.

The invention provides a beef processing wastewater circulation treatment device, and relates to the technical field of wastewater treatment.The beef processing wastewater circulation treatment device comprises a water inlet tank, the bottom of the water inlet tank fixedly communicates with a mixing tank, a stirring frame is rotationally installed in the mixing tank through a bearing, and a filling port for adding a wastewater treatment agent is formed in one side of the top of the mixing tank; an arc-shaped sieve plate is fixed to the bottom of the water inlet tank, the radian of the arc-shaped sieve plate is matched with that of the mixing tank, impurities in wastewater are screened and removed through cooperation of a reciprocating overturning sieve frame and the arc-shaped sieve plate, the impurities cannot be accumulated at one position, and the wastewater containing liquid medicine is sent back into the water inlet tank to be circularly filtered through cooperation with the mixing tank; and in the process, new wastewater can be continuously added to be mixed with wastewater containing liquid medicine, so that the efficiency of generating precipitates by reaction of fine impurities in the wastewater and the wastewater treatment agent is improved, and blockage of an internal screen frame and an arc-shaped screen plate cannot be caused.

The invention belongs to the field of wafer cleaning, and particularly relates to double-wafer cleaning equipment which comprises a cleaning box, a liquid storage box is fixed to the bottom of the cleaning box, three cleaning brush rollers rotate at the same time, the rotating directions of the cleaning brush rollers located on the upper portion and the lower portion are the same, and the rotating direction of the cleaning brush roller located in the middle is opposite to the rotating direction of the cleaning brush roller located in the middle. The rotating brushing directions of the cleaning brush rollers located at the top and the bottom of the wafer main body are different, so that the surface of the wafer main body can be subjected to mechanical acting force in multiple directions, various types of pollutants are more thoroughly removed, and the cleaning liquid is directly injected into the cleaning brush rollers, so that the cleaning efficiency is improved. And the used cleaning liquid flows into the liquid storage tank to be filtered so as to be pumped out next time, circulation of the cleaning liquid is achieved, the requirement for new cleaning liquid in the cleaning process is reduced, and resources are saved.

The invention discloses an efficient and energy-saving continuous open-width bleaching and washing process for knitted fabric. The process comprises the steps of fabric preparation, an efficient bleaching stage, bleaching treatment, a continuous open-width washing stage and drying treatment. The low-alkali bleaching finishing agent has the beneficial effects that low-alkali bleaching finishing of the fabric is realized, the output of heavy sewage is reduced, and the fabric has the advantages of good whiteness and strength, so that the problems that the energy utilization efficiency is low, and energy is wasted in each link from bleaching to washing to drying are solved.

The invention belongs to the technical field of workpiece burr grinding, and relates to a burr inside and outside removing device for hexagonal nut production, the burr inside and outside removing device comprises a machining table, a feeding table, a feeding disc, a bearing disc, a fan-shaped grinding disc, a driving mechanism and an inside grinding mechanism, the top of the machining table is connected with the feeding table and the bearing disc, the bearing disc is rotatably connected with the feeding disc, and the fan-shaped grinding disc is connected with the driving mechanism. A plurality of discharging grooves are evenly formed in the feeding disc at intervals, a plane grinding disc is arranged at the top of the bearing disc, two fan-shaped grinding discs are connected to the top of the feeding table and located above the feeding disc, and a driving mechanism and an internal grinding mechanism are arranged on the machining table. When burrs of the hexagon nut are removed, burrs on the top face and the bottom face of the hexagon nut can be removed at the same time, burrs of an inner hole of the hexagon nut can be removed, burrs on the side edge of the hexagon nut can also be removed, operation is more convenient, and it can be guaranteed that the burrs are thoroughly removed.

The invention discloses a copper and copper alloy strip edge watermark removing device, and relates to the technical field of copper strip production, the copper and copper alloy strip edge watermark removing device comprises a copper strip body and a fixing plate, the side, away from the copper strip body, of the fixing plate is fixedly connected with a programmable controller, and the side, away from the fixing plate, of the programmable controller is provided with an air compression device; a nozzle is fixedly connected to an opening of the air compression device and used for blowing compressed air to the edge of the copper strip body at a certain angle and speed. The device has the main advantages that through the stepping motor, the moving body, the air compression device and the nozzle, water stains on the edge of the strip can be removed through compressed air, and the compressed air can quickly blow away the water stains on the edge of the strip through high-speed airflow and certain pressure of the compressed air. Therefore, the drying time in the production process can be remarkably shortened, and the production efficiency is improved.

The application discloses a kind of relative radiation calibration methods and systems of remote sensing image based on quantile, it is related to remote sensing image processing technical field, the method includes: collecting satellite historical image data and separating according to spectral band;The value of each column of single-band image detector is sequentially arranged in ascending order, and quantile value is uniformly extracted to generate the quantile feature sequence of each column;The arithmetic mean value of all columns under the same quantile level is calculated, and the global reference quantile distribution is constructed;Based on least square method, the linear mapping relationship between each column quantile sequence and reference distribution is constructed, and the radiation correction gain and bias coefficient of each detector column are obtained;The original image is corrected column by column using the coefficient;The present application effectively eliminates the vertical strip noise caused by the non-uniformity of sensor response, overcomes the limitations of traditional calibration under the meteorological conditions and platform maneuvering, significantly improves the timeliness and image radiation quality of high-frequency and high-precision calibration.

The invention relates to the technical field of cable processing, in particular to a double-station cable straightening and winding production line system and a process method of the system.The double-station cable straightening and winding production line system comprises a cable production line system body, the cable production line system body comprises a storage rack, a rust removal device is arranged behind the storage rack, and the rust removal device is provided with a heating device in a matched mode; the heating device is connected with an extruder, a traction storage device is arranged behind the extruder, a guide frame is arranged between the traction storage device and the extruder, and a winding device is arranged behind the traction storage device; according to the system, by integrating a plurality of functional modules such as the storage rack, the rust removal device, the heating device, the extruder, the traction storage device and the winding device, full automation and intelligence of cable processing are achieved. According to the system, the production efficiency is improved, the labor intensity is reduced, and the consistency and the stability of the product quality are ensured.

This invention relates to an insulating oil and an oil-paper insulation system containing superhydrophobic nanoparticles, as well as their preparation method and application, belonging to the field of electrical equipment insulation technology. This invention provides an insulating oil containing superhydrophobic nanoparticles, wherein the superhydrophobic nanoparticles are silane-modified nanoparticles, and the nanoparticles include at least one of SiO2, TiO2, and h-BN; the insulating oil includes at least one of mineral insulating oil, synthetic insulating oil, and natural ester insulating oil. This invention achieves the superhydrophobicity of the nanoparticles and good compatibility with the oil phase through silane modification. Adding silane-modified nanoparticles to the insulating oil effectively reduces the water content of the insulating oil and optimizes the interfacial performance of the oil-paper. Combined with the low-temperature, high-efficiency, and uniform rapid impregnation process of this invention, the overall electrical performance and service life of the oil-paper insulation system are significantly improved.

The invention relates to an environment-friendly process method for improving the surface metal cleaning efficiency of a silicon wafer, and belongs to the technical field of semiconductor silicon wafer processing, and the process method comprises the following operation steps: S1, pre-cleaning and activation: placing the silicon wafer in a first cleaning tank, introducing ozone into ultrapure water, and processing in cooperation with low-frequency ultrasound; and S2, main cleaning and complexing: placing the silicon wafer subjected to pre-cleaning and activating treatment in a second cleaning tank, and treating the silicon wafer in a dilute citric acid solution in cooperation with high-frequency ultrasound. And S3, overflow rinsing: placing the silicon wafer subjected to main cleaning and complexing treatment in a third cleaning tank. And S4, drying: carrying out drying treatment on the silicon wafer subjected to the overflow rinsing treatment. Through the synergistic effect of physical stripping, chemical oxidation and complexing dissolution, under the condition that highly toxic chemicals such as hydrofluoric acid are not used, the cleanliness of metal on the surface of the silicon wafer reaches the ppt level, and the problems that traditional RCA cleaning is serious in environmental pollution and high in operation risk are effectively solved.

The utility model discloses a compound full-automatic rubber roller rice huller, and relates to the technical field of rice processing. The compound full-automatic rubber roller rice huller comprises a box body, a screening assembly and a screening assembly, a bottom frame is fixedly installed at the bottom of the box body, the screening assembly is arranged on the box body, the screening assembly is arranged on the bottom frame, the screening assembly comprises a sliding rail, a connecting sliding block and a hydraulic rod, the sliding rail is fixedly installed at the top of the inner side of the bottom frame, and the connecting sliding block is slidably installed on the box body; a hydraulic rod is fixedly installed on the outer wall of one side of the bottom frame. Through cooperative use of a spring, a sliding rail, a connecting sliding block and a hydraulic rod, through secondary shaking screening, tiny impurities can be further removed, the purity of grains is improved, the grains can be evenly distributed on a filtering frame through shaking screening, accumulation or condensation of the grains is avoided, the screening uniformity is improved, and the screening efficiency is improved. And it is ensured that each grain can make full contact with the screen, the screening effect is improved, the risk that the screen is blocked is reduced, and the service life of the screen is prolonged.

The invention discloses a fan blade cleaning device for a wind driven generator, and particularly relates to the technical field of wind power generation. And by arranging the rotating mechanism, sustainable utilization of energy is achieved, the wind energy utilization efficiency is improved, the noise level is reduced, and interference to the environment is reduced. By arranging the buffer mechanism, the generator is prevented from being damaged due to too high rotating speed, and the effect of effectively reducing the rotating speed of the generator according to wind power in time is achieved. And by arranging the cleaning mechanism, dirt and insects on the fan blades of the wind driven generator can be cleaned up, so that the efficiency of the fan blades is recovered, and the performance of the wind driven generator is improved. And by arranging the spraying mechanism, liquid can be uniformly sprayed on the surfaces of the blades through a spraying device, and dirt and dust are thoroughly removed. And a scraper mechanism is arranged, and a scraper is in contact with the surface of the fan blade to scrape dust on the surface of the fan blade, so that the scraping cleanliness of the fan blade is improved.

The invention relates to a device system and a method for measuring carbon and oxygen isotopes in micro-area carbonate rocks. The measuring device system comprises a laser corrosion device, a carbon dioxide enrichment device, a water removal device, an impurity adsorption device, an impurity-gas separation device, an opening shunting device and an isotope measuring device which are connected in sequence, the laser corrosion device comprises a sample pool, and the top of the sample pool is connected with a laser. According to the determination device system provided by the invention, the carbon and oxygen isotope test precision and the test efficiency are remarkably improved, the micro-area area is reduced, the problem that part of carbonate structures cannot be determined is solved, the development of a micro-area carbonate rock structure carbon and oxygen test technology is effectively promoted, and the development of the carbon and oxygen test technology is promoted. The method further promotes the research of carbonate reservoir sedimentary environment, pore water cause, paleoclimate and the like.

This invention discloses a capsule centrifugal oil removal device. A rotating drum assembly is mounted on a frame, and a centrifugal assembly is located on the feed side of the rotating drum assembly, with a pellet inlet pipe inserted into the centrifugal assembly. The centrifugal assembly includes a centrifugal hub driven by a centrifugal motor. A conical section is provided on the centrifugal hub, with its diameter gradually increasing from the feed end to the discharge end. Several sieve holes are staggered along the conical section. This invention adds a centrifugal assembly before the rotating drum assembly, centrifuging and separating most of the oil within the centrifugal assembly before feeding the pellets back into the rotating drum assembly for further separation of the remaining oil. This results in more thorough oil removal, better oil removal effect, less residual oil on the pellets, significantly improved drying speed, shorter drying time, better drying effect, and higher production efficiency.

The utility model discloses cloth bag dust remover relates to dust remover technical field, including dust removal cylinder, the dust removal cylinder top is fixedly arranged with the air inlet pipe, the dust removal cylinder bottom is fixedly arranged with the impurity removal mouth, and the dust removal cylinder outside wall is provided with the suction mechanism, and the dust removal cylinder inside is provided with the cleaning mechanism, and the cleaning mechanism includes the air pipe, and the air pipe outer wall is fixedly arranged with L type branch pipe, and L type branch pipe upper end is fixedly arranged with the connecting pipe, and the connecting pipe bottom is fixedly arranged with cloth bag body, and the dust removal cylinder top is fixedly arranged with the motor, and L type branch pipe side end is fixedly arranged with the cleaning brush for cleaning dust removal cylinder inner wall, and the dust removal cylinder top is fixedly arranged with the pulse valve, and the output of pulse valve is fixedly arranged with the catheter. Blow out gas through a plurality of gas outlets, clean the impurities adhered to the surface of the cleaning brush, and the dust and other impurities adsorbed on the outer surface of the cloth bag body fall down through the airflow blown into the cloth bag body by the connecting pipe.

The utility model relates to the technical field of ventilation cooling equipment, in particular to ventilation cooling equipment for a dust-free workshop, which comprises an air inlet pipeline, a filter assembly and a cleaning assembly, one end of the air inlet pipeline is provided with an air inlet, the other end of the air inlet pipeline is provided with a ventilation opening, and the filter assembly comprises a metal filter screen and an electrostatic adsorption filter screen. The metal filter screen and the electrostatic adsorption filter screen are both located in the air inlet pipeline, and the metal filter screen is located on the side close to the air inlet. After external air is filtered through the metal filter screen, the electrostatic adsorption filter screen, the nanofiber folding filter element and the carbon nanotube honeycomb filter element, large-particle to nanoscale impurities can be efficiently removed, and the air purification effect is improved. The cleaning assembly is designed for the air inlet side of the filter element, a scraper drives scrapers of different flexibility to rotate, the air inlet side of the filter element is cleaned in a targeted mode, the cleaning effect is improved, the filter element is prevented from being damaged, the service life of the filter element is prolonged, and efficient operation of the filtering assembly is guaranteed.

A dust collector with a self-cleaning function comprises a dust cup provided with an air inlet, and the air inlet is connected with an air inlet pipe; an air suction assembly and a control assembly are arranged in the main machine, an air outlet and an air suction opening are formed in the main machine, the dust cup is connected with the main machine, and the air suction assembly is connected with the control assembly; the filter element is arranged in the dust cup, a channel is formed between the filter element and the exhaust inlet of the main machine, and external dust gas enters the dust cup through the air inlet pipe, flows through the filter element, then enters the main machine and is exhausted from the air outlet of the main machine; the dust blowing and cleaning mechanism is arranged in a channel between the filter element and the main machine, the dust blowing and cleaning mechanism blows out cleaning air, and the cleaning air passes through the filter element and blows off dust and impurities on the surface of the filter element. The air blowing and dust removing functions are integrated on the channel between the filter element and the air suction opening, the vibration function is matched, the filter element is cleaned under the condition that the filter element is not detached, the frequency of detaching, cleaning and replacing the filter element is increased, and the use experience of a user is improved.

This invention discloses an integrated molding method for metallic chromium powder and additives, comprising: crushing chromite ore and mixing it with aluminum powder, adding additives, mixing and pressing the mixture into a compact, and then feeding it into an electric arc furnace for an electrothermal reaction; after the reaction, separating the slag and metallic chromium; crushing the prepared metallic chromium, adding a binder to the crushed metallic chromium powder, mixing, and then performing high-temperature sintering treatment to obtain high-temperature sintered metallic chromium powder, which is then cleaned and dried; pressing the dried metallic chromium powder into blocks to obtain the finished metallic chromium product. This invention addresses the issue of high carbon content in existing electrothermal methods for preparing metallic chromium by adding chromium trioxide, tin powder, or highly active tin powder to chromite ore. The reaction of chromium trioxide with carbon removes impurities, while the reaction of tin powder with sulfur generates volatile tin sulfide, thereby removing sulfur impurities from the metallic chromium and improving the purity of the finished metallic chromium product.

The application discloses a preparation method and application of high-purity cesium iodide, which comprises the following steps: firstly, mixing an industrial-grade cesium source powder and an iodine source solution, and preparing a solid powder after vacuum rotary evaporation and drying; then repeatedly washing the powder by using a special detergent, removing impurities, and drying; sintering at a temperature of 200-350 DEG C; dissolving the sintered powder in deionized warm water, and cooling and crystallizing at 0 DEG C; and finally collecting and drying the crystallization product to obtain the high-purity cesium iodide (CsI) finished product. The CsI powder prepared by the application has a purity of more than 99.99%, can obtain more excellent comprehensive performance, and has a simple and controllable process, and has a wide application prospect in the field of perovskite solar cells.

The invention relates to full-automatic deburring equipment which comprises a machine table, a loading device, a feeding device, a feeding device and a grinding machine. The feeding device is arranged on the working surface; the feeding device is arranged on the working surface and is opposite to the loading device; the feeding device is arranged on the working face and opposite to the feeding device, the feeding device comprises a linear module and a clamping mechanism, and the clamping mechanism is arranged at the output end of the linear module; the grinding machine is arranged on the working face and is opposite to the clamping mechanism. Through cooperation of the loading device, the feeding device, the feeding device and the grinding machine, automatic part grinding can be achieved, manual participation is not needed, the working efficiency is improved, and the probability of safety accidents is reduced.