43 results about "Spray drying" patented technology

The invention discloses a catalyst for preparing isocaprylic acid through oxidation of high wear-resistant and heat-resistant isooctanol and a preparation method of the catalyst, and the method comprises the following steps: (1) uniformly mixing a zinc source, a phosphorus source and a hydroxyapatite precursor, stirring to form gel, roasting, and grinding to obtain a ZnO / HAP active component; (2) uniformly mixing kaolin and pseudo-boehmite, carrying out ball milling and screening treatment, then continuously adding nano-graphite, and carrying out ball milling and mixing to obtain a composite matrix; (3) adding polyvinylpyrrolidone, polyacrylonitrile and glucose into deionized water, stirring and dissolving to obtain a composite binder solution; (4) mixing the ZnO / HAP active component with the composite matrix and the composite binder, adding a dispersant and deionized water, and carrying out stirring and ultrasonic dispersion treatment to obtain catalyst slurry; and (5) carrying out spray drying molding on the catalyst slurry, and then drying and roasting to obtain the high-wear-resistance and heat-resistance catalyst. The catalyst has high wear resistance and heat resistance, and is suitable for large-scale industrial production.

The invention provides a preparation method of a water-proof and oxygen-proof nanocrystal composite material, which comprises the following steps: atomizing and drying a solution I containing a nanocrystal precursor and a polymer to obtain nanocrystal composite particles, dispersing the nanocrystal composite particles in a colloidal solution, ultrasonically and uniformly mixing the nanocrystal composite particles with a solution II containing a water-proof and oxygen-proof polymer, and performing secondary atomizing and drying to obtain the water-proof and oxygen-proof nanocrystal composite material. And forming a polymer protective layer with water and oxygen barrier property on the surfaces of the nanocrystalline composite particles to obtain the water-proof and oxygen-proof nanocrystalline composite material. The nanocrystalline composite material can be dispersed in packaging base materials such as EVA and POE, has high photoelectric conversion efficiency, maintains long-term environmental stability, and remarkably prolongs the service life of a display device. According to the preparation method, the nanocrystalline composite material is prepared by adopting a secondary spray drying process, the destructive effect on the nanocrystalline material in a traditional liquid phase coating method is avoided, the second waterproof oxygen-barrier polymer layer can greatly improve the environmental stability of the nanocrystalline material, and meanwhile, the nanocrystalline material can be prepared with high efficiency and high material utilization rate; and the method is suitable for large-scale production.

The invention relates to the technical field of cracking catalysts, in particular to a high-activity coal gangue cracking catalyst modification process which comprises the following steps: crushing coal gangue, spraying an alkaline pretreatment solution on the surface, and roasting to obtain thermally activated coal gangue powder; soaking the thermally activated coal gangue powder in an acidic treatment solution, heating in a constant-temperature water bath, washing, and drying to obtain acid modified coal gangue powder; soaking the acid-modified coal gangue powder in a metal salt solution, fully dipping through ultrasonic treatment, and drying to obtain high-activity coal gangue powder; and mixing the high-activity coal gangue powder with tricalcium aluminate hexahydrate and water, performing spray drying to generate microspheres, and calcining the microspheres in a kiln to obtain the high-activity coal gangue cracking catalyst. According to the high-activity coal gangue cracking catalyst, through matching and combination of the raw materials and the preparation steps, the catalytic activity of the catalyst can be improved, the internal structure of coal gangue is improved, the mechanical strength is enhanced, and the service life is prolonged.

The application discloses a kind of high-silicon-aluminum ratio NaY zeolite in-situ crystallization microspheres and preparation method and application thereof, belong to catalytic material technical field.High clay, diatomite and water are mixed and beaten, and a modified high clay slurry is formed by adding a silicon promoter, a dispersing agent and a pore-expanding agent during the beating process.The modified high clay microspheres are spray dried into modified high clay microspheres.The modified high clay microspheres are calcined at different temperatures to obtain high clay balls and metakaolin balls.The high clay balls, metakaolin balls, water, silicon source, sodium hydroxide and silicon promoter are mixed to obtain a mixed slurry, which is subjected to aging treatment and in-situ crystallization synthesis reaction to obtain high-silicon-aluminum ratio NaY zeolite in-situ crystallization microspheres.The heavy oil cracking catalyst prepared from the high-silicon-aluminum ratio NaY microspheres prepared by the application has excellent hydrothermal activity stability and stronger heavy oil conversion capacity, and shows higher light oil yield in waste plastic cracking reaction.

The utility model relates to a golden camellia instant tea drying device which comprises a drying cylinder, the bottom end of the drying cylinder is conical, a discharge pipe is arranged at the bottom end of the drying cylinder, a box cover is arranged at the top end of the drying cylinder, and a material spraying drying structure is arranged in the box cover. The utility model relates to the technical field of instant golden camellia powder drying equipment. According to the instant camellia nitidissima tea drying device, through the outer feeding pipe and the outer feeding cylinder, first airflow is introduced into the drying cylinder, wet materials are introduced into the drying cylinder through the inner feeding pipe and the inner feeding cylinder, second airflow is introduced into the drying cylinder through the flow guide pipe, and under the influence of the material spraying and drying structure, the wet materials are dried in the drying cylinder; and the flowing tracks of the first airflow, the wet material and the second airflow are parallel to one another, so that the first airflow or the second airflow can be effectively prevented from entering the cavity where the wet material is located, the wet material is prevented from being dried and hardened in the cavity between the second inner barrel and the third inner barrel, and the problem that the material spraying and drying structure is blocked is solved.

The utility model relates to the technical field of coating drying, and discloses coating paint spraying drying equipment which comprises a frame, a connecting frame is arranged on the inner side of the frame, a motor is fixedly connected to the top of the connecting frame, a connecting rod is fixedly connected to the output end of the motor, a first bevel gear is fixedly connected to the left end of the outer wall of the connecting rod, and a second bevel gear is fixedly connected to the right end of the outer wall of the connecting rod. A flow dividing pipe is fixedly connected to the middle of the connecting frame, a transmission rod is rotationally connected to the middle of the flow dividing pipe, a second bevel gear is fixedly connected to the top of the transmission rod, the second bevel gear is connected with the first bevel gear in a meshed mode, and a plurality of fan blades are fixedly connected to the lower middle portion of the outer wall of the transmission rod at equal intervals. According to the drying device, the motor drives the fan blades to rotate in the flow dividing pipe through the connecting rod, the first bevel gear, the second bevel gear and the transmission rod, so that wind power is formed to blow heat energy generated by the heating pipe downwards, and the heat energy is evenly blown to objects needing to be dried after being divided by the flow dividing pipe.

The invention relates to the technical field of microcapsule powder, in particular to microcapsule powder with a peptide-polysaccharide system and a preparation method. The microcapsule powder comprises the following components in percentage by mass: 2-3% of wall material reinforced particles; 3 to 5 percent of chitosan; 10 to 15% of whey protein; 1-2% of an emulsifier; 35 to 45% of maltodextrin; the content of transglutaminase is 0.05 to 0.1 percent; and the balance of functional grease. The functional grease comprises composite grease, a functional additive and a cross-linking agent in a mass ratio of (40-50): 5: 1; the preparation method of the microcapsule powder comprises the following steps: S1, preparing an inner-layer water phase; s2, preparing an oil phase; s3, preparing an outer layer water phase; s4, preparing a water-in-oil-in-water emulsion with a peptide-polysaccharide system; s5, preparing micro-capsule powder; the microcapsule powder disclosed by the invention has a water-in-oil-in-water structure, so that the stability is remarkably improved; then a compact'peptide-polysaccharide 'network structure is formed through transglutaminase, the interfacial tension is reduced, thermal denaturation is resisted in the subsequent spray drying process, and the embedding rate is increased.

Process for the preparation of hollow spherical glass particles comprising at least SiO2, Al2O3, and an alkali metal oxide, wherein the process comprises the preparation of precursor particles comprising at least SiO2, Al2O3, and an alkali metal oxide by mixing the starting materials, slurrying the starting materials with water followed by spry-drying and heat-treating the obtained precursor-particles at a temperature from 1000° C. to 1800° C., preferably from 1300° C. to 1600° C. by contacting the precursor particles with at least one naked flame.

The utility model discloses plastic spraying drying equipment which mainly solves the problem that a plastic spraying part is heated unevenly in the prior art. The equipment comprises a cabinet body with an opening in the front side, and the cabinet body is connected with a cabinet door through hinges. The U-shaped supporting frame is arranged in the cabinet body and can slide along the limiting sliding grooves, and operation and maintenance are convenient. A hanging assembly is designed on the inner side of the U-shaped supporting frame and comprises a plurality of hooks which are sequentially arranged in a staggered mode and used for hanging plastic spraying parts. And branches are arranged at the end parts of the hooks, and the tail ends of the branches are inclined upwards to ensure that the plastic-sprayed part is stably and uniformly heated. The fan is arranged at the top in the cabinet body, external air is introduced, and uniform heating is achieved through the heating flow guide structure. The heating flow guide structure comprises a first flow guide cavity, a flow guide plate, an electric heating wire and a plurality of flow guide holes in the flow guide plate, and it is ensured that hot air is evenly distributed on each plastic spraying part; the plastic spraying part drying device can effectively improve the drying efficiency and quality of plastic spraying parts, and ensures that each plastic spraying part can be fully and uniformly heated.

The invention discloses macroporous silicon dioxide microspheres as well as a preparation method and application thereof, and belongs to the technical field of nano high-tech materials. The main aperture of the silicon dioxide microsphere is about 100nm, the primary particle size is 50nm, the agglomerated particle size D50 is 100mu m, and the specific surface area is gt; the pore volume is 1.0 to 1.75 cm / g. According to the preparation method, rice hull-based high-purity sodium silicate with the modulus of 3.25 and carbon dioxide are used as main raw materials, and the designed core technology is that a double-template system composed of polystyrene microspheres and a macromolecular block copolymer is adopted, and under specific conditions, processes such as carbon dioxide carbonization gel, spray drying granulation, oil-phase thermocuring and programmed roasting are used. The rice hull-based green high-tech material obtained by the method has the advantages of mild reaction process, good controllability of aperture and particle size, and high mechanical strength of the product. The macroporous silica microspheres prepared by the method are particularly suitable for the fields of drug controlled release systems, biological macromolecule chromatographic separation, immobilized enzyme carriers, high-performance catalyst carriers and the like.

The invention discloses a fly ash blending combustion method and system based on two-stage mixing, and belongs to the technical field of coal chemical combustion. The method comprises the following steps that S1, raw coal is conveyed into a grinding cavity to be smashed and ground, and pulverized coal is obtained; s2, conveying one path of fly ash into the grinding cavity, and carrying out primary mixing on the fly ash and the pulverized coal in the grinding cavity to obtain a primary mixture; s3, the first-stage mixture and the second-path fly ash are jointly conveyed into the mixer for secondary mixing, and a second-stage mixture is obtained; and S4, the secondary mixture is combusted, and high-temperature flue gas obtained after combustion is subjected to gas-solid separation and then subjected to spray drying. According to the method, the fly ash is subjected to two-stage mixing, and meanwhile, the doping ratio in the first-stage mixing and the second-stage mixing is controlled, so that internal agglomeration of the fine ash can be effectively broken; fly ash is fully dispersed and mixed with pulverized coal, and sufficient viscosity and fluidity of materials can be guaranteed. Meanwhile, the doping amount of the fly ash can be effectively increased, so that large-scale blending combustion application of the fly ash is realized.

Process for the preparation of hollow spherical glass particles comprising at least SiO2, Al2O3, and an alkali metal oxide, wherein the process comprises the preparation of precursor particles comprising at least SiO2, Al2O3, and an alkali metal oxide by mixing the starting materials, slurrying the starting materials with water followed by spry-drying and heat-treating the obtained precursor-particles at a temperature from 1000° C. to 1800° C., preferably from 1300° C. to 1600° C. by contacting the precursor particles with at least one naked flame.

The invention belongs to the technical field of asbestos tailing utilization, and particularly discloses a separation method of mixed sulfate in serpentine tailing leachate. The separation method provided by the invention comprises the following steps: carrying out quantitative analysis on the serpentine leachate, and adjusting the mass ratio of nickel, iron and magnesium elements in the leachate to a set ratio; carrying out spray drying to obtain mixed sulfate dry powder, placing the mixed sulfate dry powder in a fluidized bed for two-stage roasting, and cooling and aging a roasted thermal decomposition product; and carrying out water leaching on the roasting thermal decomposition product by using a multi-stage countercurrent system, and separating to obtain a magnesium sulfate solution and a nickel / iron oxide. The high-purity high-value magnesium sulfate and nickel / iron oxide products are prepared from the asbestos tailings which are low in cost and harmful to the environment, and the effects of turning waste into wealth, improving the ecological environment and improving the economic benefits of enterprises are achieved.

The electric intelligent anti-mosquito automatic fire extinguishing power distribution cabinet has a protective shell designed on the outer side of the cabinet body, a through hole is formed in the surface of the protective shell, an inclined plate is arranged on the inner wall of the through hole, the mosquito lamp emits light to attract mosquitoes, the mosquitoes are killed by the electric net, the mosquito corpses are collected by the collecting box, the inclined plate, the collecting box and the through hole are correspondingly arranged, the light emitted by the mosquito lamp cannot easily irradiate out of the through hole, normal ventilation of the through hole is ensured, when the temperature in the power distribution cabinet exceeds a limited value, the temperature sensor sprays dry powder in the dry powder box into the power distribution cabinet through the nozzle by the controller to extinguish the fire source, the sliding groove and the sliding block are used in pairs, the lamp head moves with the power box, and maintenance is facilitated, the three measures reduce the failure frequency of the power distribution cabinet, timely automatic fire extinguishing is realized, the practicability is very high, and the production efficiency of enterprises is improved.

The invention relates to the field of spraying drying tunnels, in particular to a spraying drying tunnel with an air channel purification function, purification cabins are connected to the two sides of an air channel, a circulating air channel is formed by the purification cabins and a top air outlet mechanism at the top of the drying tunnel, and a material guide frame for mounting a filter cloth roll is arranged in each purification cabin; rotatable feeding fluted discs are arranged on the two sides of the material guiding frame and used for driving the filter cloth roll to move along the material guiding frame, a twist shaft rotating in linkage with the feeding fluted discs is arranged below the feeding fluted discs, and the twist shaft drives the air inlet box to move in a reciprocating mode through a transverse moving mechanism. According to the device, the filter cloth roll is driven by the feeding fluted disc to realize continuous replacement, and a plurality of beating plate mechanisms can be linked to beat and purge a polluted surface during replacement, so that the maintenance convenience of the filter mechanism and the removal efficiency of pollutants can be effectively improved while the situation that a traditional filter plate needs to be disassembled is avoided, and the purification efficiency of an air channel is improved.

The utility model provides spraying and drying equipment for an I-shaped steel structure, which comprises a spraying chamber and a drying chamber, the spraying chamber and the drying chamber are arranged in parallel, drying mechanisms are symmetrically arranged on the two sides in the drying chamber, each drying mechanism comprises a vertically arranged drying heating pipe, a fan is arranged at the rear end of each drying heating pipe, and the fan is arranged in the drying chamber. A hot air guide plate is arranged at the front end of the drying heating pipe, a rear end opening of the hot air guide plate faces the drying heating pipe, a front end opening of the hot air guide plate faces the center of the drying chamber, and the front end opening of the hot air guide plate is smaller than the rear end opening, so that heat of the drying heating pipe is gathered towards the center under blowing of the fan.

This invention discloses a doped hard carbon anode material, its preparation method, and its application. The preparation method of the doped hard carbon anode material includes the following steps: S1: Heat-treating a nitrogen-containing precursor to obtain graphitic carbon nitride; grinding it into powder, mixing it with acid, ultrasonically stirring, washing with water until neutral; drying and adding water to obtain a suspension; S2: Mixing phenolic compounds and aldehyde compounds with an alkaline aqueous solution, reacting them, then mixing them evenly with the suspension, and spray-drying to obtain dry powder; S3: Placing NaF in a high-frequency plasma reaction chamber to form vapor, depositing NaF on the surface of the dry powder; S4: Heat-treating the NaF-deposited dry powder in a protective gas atmosphere, and then performing carbon coating. The doped hard carbon anode material provided by this invention uses plasma technology to uniformly coat the surface and pores of hard carbon with NaF vapor, and then performs carbon coating through vapor phase deposition, increasing the binding force of NaF and reducing the specific surface area of ​​the hard carbon material, thereby exhibiting high initial efficiency and long cycle life.

The invention provides a waste plastic oil cracking catalyst and a preparation method thereof.The method comprises the steps that kaolin is roasted and then treated with alkali liquor, and modified kaolin is obtained; pseudo-boehmite and zinc salt are mixed and then subjected to ball milling, and a zinc-aluminum composite material is obtained; the modified kaolin, a zinc-aluminum composite material, a phosphorus-modified ZSM-5 molecular sieve, a macroporous template agent, aluminum sol and water are mixed and pulped, spray drying is performed to prepare microspheres, roasting is performed, and the waste plastic oil cracking catalyst is obtained. The pore structure and iron pollution resistance of the catalyst are improved through kaolin reaming modification, zinc-aluminum material synthesis and macroporous template addition. When the catalyst is used for cracking iron-containing waste plastic oil, the yield of triene and the total liquid yield in a product are increased, and the yield of coke is reduced.

The paint spraying device for aluminum alloy door and window machining comprises a box body, a shell is arranged on one side of the top end of the box body, and a stirring tank is installed at the top end of the shell; a drying mechanism is arranged in one side of the top end of the box body, and a stirring assembly is arranged in a stirring tank; wherein the drying mechanism comprises an air bellow installed on one side of the top end of the box body, a connecting pipe is installed between the air bellow and the box body, a frame body is installed at the bottom end of the connecting pipe, a cavity is formed in the frame body, blowing pipes are installed on the inner side of the frame body, and a fixing box is installed on one side of the top end of the air bellow; and a supporting block is installed on one side of the top end of the air bellow, so that the effect of uniformly drying multiple faces of the aluminum alloy frame can be achieved, air is filtered through a filter screen, dust and impurities in external air can be effectively prevented from being attached to the surface of the aluminum alloy frame, and the quality of the aluminum alloy frame after paint spraying and drying can be greatly improved.

The utility model discloses a drying device for metal cabinet plate spraying and belongs to the technical field of spraying and drying. A drying device for metal cabinet plate spraying comprises a box body and a drying chamber arranged in the middle of the box body, a plurality of air outlet holes communicating with a combustion chamber are formed in the two sides of the drying chamber correspondingly, and an adjusting assembly used for adjusting the space size of the drying chamber is arranged in the drying chamber. The adjusting assembly comprises a bottom plate vertically sliding in the drying chamber and a first heat insulation pad used for sealing the air outlet holes. The adjusting assembly is arranged, so that the bottom plate ascends and descends in the drying chamber, the space size of the drying chamber can be adjusted, metal cabinet plates of different sizes can be conveniently adapted, heat needed for keeping the temperature in the drying chamber can be reduced by reducing the space of the drying chamber when the metal cabinet plates of small sizes are dried, and the drying efficiency is improved. Therefore, the emission of the gas pipe can be reduced to save fuel.

The utility model relates to the technical field of paint spraying equipment, and discloses paint spraying equipment for iron tower support production, which comprises a drying box main body, the outer wall of one side of the drying box main body is fixedly connected with a lifter, the output end of the lifter is fixedly connected with a sealing plate, and the output end of the sealing plate is fixedly connected with a driving roller. An adjusting mechanism is arranged on the sealing plate, the adjusting mechanism is used for conducting uniform paint spraying and drying by rotating the support at multiple angles, an auxiliary mechanism is arranged on the adjusting mechanism, the adjusting mechanism comprises an annular frame, and the annular frame is rotationally connected to the inner wall of the top of the sealing plate through a bearing; a shifting piece is slidably connected to the inner wall of one side of the annular frame, and a small spring is fixedly connected to the outer wall of one side of the shifting piece. According to the utility model, the annular frame and other structures are arranged, so that the problem that the iron tower bracket is faded or locally discolored after being produced due to the phenomenon that the local surface is not uniformly heated because the bracket is only adjusted in a single-sided or manual manner during paint spraying and drying is solved.

The utility model belongs to the field of code spraying equipment, and particularly relates to carton code spraying equipment for carton production, which comprises a support, a conveying belt is arranged on the inner side of the support, an adjusting seat is fixedly connected to the outer side of the support, and an adjusting rod is mounted in the adjusting seat through a bearing. The middle section of a rod body of the adjusting rod is connected with a moving block through threads, and the moving block is slidably connected to the inner side of the adjusting seat. The fixing plate is arranged above the conveying belt used for conveying cartons and used for installing the code spraying device, then the code spraying drying mechanism is arranged on the outer side of the code spraying device, dry air can be conveyed into the hollow ring through the air inlet pipe, then the air is sprayed out through the nozzle, and therefore the printed code is dried, and meanwhile the code spraying device is convenient to use. The motor, the driving gear and the gear ring can drive the hollow ring to rotate, so that the purpose of rotary drying is achieved, and the code spraying and drying efficiency is improved.

The invention relates to the technical field of food science, and particularly discloses bone nutrition fortified hydrolyzed yolk powder and a preparation method thereof. The product comprises hydrolyzed yolk powder, a calcium source, vitamin D3, vitamin K2, collagen tripeptide, erythritol and trehalose, and N-acetyl glucosamine can also be added. The preparation method comprises the following steps: firstly, preparing yolk slurry, carrying out directional step-by-step enzymolysis by using a compound enzyme, carrying out enzyme inactivation and centrifugal separation to obtain a supernatant, carrying out membrane filtration and concentration, then carrying out spray drying to obtain a hydrolyzed yolk powder base material, and finally, carrying out dry mixing on the hydrolyzed yolk powder base material and the raw materials. The product can be used for strengthening bone nutrition, assisting in improving bone metabolism and supporting bone health, and has the advantages that a multi-component synergistic effect is achieved, and the bone health can be supported from multiple links of calcium absorption, bone matrix construction and bone metabolism regulation; in addition, the preparation method has the advantages that the process steps are closely linked, the activity of the raw materials can be accurately reserved, and the mixing uniformity of the product is guaranteed.

The invention relates to the technical field of cracking catalysts, in particular to a coal gangue-based petroleum catalytic cracking catalyst and a preparation method thereof.The preparation method comprises the following steps that an alkaline earth metal salt solution is sprayed on the surface of coal gangue, first calcination and smashing are conducted, and coal gangue powder is obtained; mixing the coal gangue powder, boric acid, sodium metaaluminate, a silane coupling agent and maltodextrin, reacting at 400-600 DEG C, cooling and filtering to obtain modified coal gangue powder; adding water into the modified coal gangue powder in a slurrying pool to prepare slurry, adding sodium tripolyphosphate, and grinding to obtain slurry; and adding amorphous silica-alumina gel, water glass and phosphate into the slurry, carrying out spray drying to generate microspheres, and calcining the microspheres in a kiln for the second time to obtain the coal gangue-based petroleum catalytic cracking catalyst. According to the coal gangue-based petroleum catalytic cracking catalyst disclosed by the invention, by matching and combining the raw materials and the preparation steps, the catalytic activity of the catalyst can be improved, the internal structure of coal gangue is improved, the mechanical strength is enhanced, and the service life is prolonged.

The utility model discloses an electrostatic spraying and drying device, and particularly relates to the field of spraying and drying equipment, the electrostatic spraying and drying device comprises a drying box, a drying assembly is arranged on the rear side of the drying box, the drying assembly comprises a driving motor, one side of the driving motor is in transmission connection with a lead screw, and the outer wall of the lead screw is in threaded connection with a connecting block. And connecting rods are symmetrically and fixedly arranged at the two ends of the connecting block, fixing blocks are connected to one sides of the connecting rods through fixing bases, drying fans are fixedly connected to one sides of the fixing blocks, connecting grooves are formed in the rear side of the drying box, connecting blocks are slidably connected into the connecting grooves, and the fixing blocks are installed in the fixing grooves in an embedded mode. According to the drying device, the drying assembly is arranged, objects are dried from the two ends, the drying fans at the two ends can be driven by the driving motor to move up and down, then the drying effect of the drying device is improved, the dried objects are dried in all directions, the drying speed is increased, the application range of the device is wider, and the practicability of the device is improved.

The utility model discloses a film spraying and drying device for a small-size colored composite film. The film spraying and drying device comprises a rack, comprising a rack, an inlet conveying roller, an outlet conveying roller, a spraying mechanism and a drying mechanism. The spraying mechanism comprises a rack I, a spray head seat, a spray head, a high-pressure gas-liquid mixing pipe which is communicated with the spray head seat and is used for providing mixed gas and liquid, and a communicating hose which is communicated between the high-pressure gas-liquid mixing pipe and the spray head seat; the drying mechanism comprises a box body and a nickel-chromium hollow workbench, and a medium-temperature bin, a high-temperature bin and a medium-temperature bin I are arranged in the nickel-chromium hollow workbench. The spraying mechanism is arranged at the front end of the drying oven, a liquid spraying nozzle is adopted for surface direct spraying of a sprayed film, and the sprayed composite film enters the drying oven to realize stepped temperature difference in the drying oven; therefore, volatilization, curing and deformation prevention of a solvent in an inner adhesive layer of the composite film and diversity of colored coating films on the surface of the composite film are achieved, the effect of multiple times of drying is achieved through one-time technology, and efficiency is improved.

The invention discloses an anti-rust oil spraying device for the outer surface of a spring steel bar, and belongs to the field of steel bar spraying machining. The anti-rust oil spraying device for the outer surface of the spring steel bar comprises a rack, a feeding assembly and a discharging assembly are arranged at the two ends of the rack correspondingly, a spraying drying assembly and a conveying assembly are arranged on the sides, close to each other, of the rack and the discharging assembly correspondingly, and a screw-in assembly is arranged on the rack; the screw-in assembly comprises a plurality of bearing assemblies capable of synchronously performing annular reciprocating motion in the rack, and each bearing assembly comprises a sliding rail, two first rotating shafts symmetrically and rotationally connected to the sliding rail, two roller sets fixedly arranged on the corresponding first rotating shafts and a plurality of driving assemblies arranged on the corresponding sliding rail. Steel bars are efficiently fed to the bearing assembly through the feeding assembly, the steel bars are screwed in through the bearing assembly, uniform spraying and rapid drying of the steel bars are facilitated, automatic discharging of the discharging assembly is matched, the automation degree is high, and the steel bar spraying device is better suitable for continuous production operation.

The utility model relates to self-detection fireproof power transmission and distribution control equipment, and aims to solve the problems that although the fire extinguishing effect can be achieved when dry powder is sprayed out to extinguish fire in a distribution box, the dry powder for fire extinguishing can be adsorbed on undamaged electrical equipment to cause damage to the undamaged electrical equipment, and oxygen can be injected into the distribution box through an air compressor to cause damage to the electrical equipment. The fire extinguishing cabinet comprises a cabinet body, a hinge is installed on one side of an opening in the front end of the cabinet body, a cabinet door is hinged to the cabinet body through the hinge, heat dissipation holes are formed in the two ends of the cabinet body, and one ends of the outer sides of the two heat dissipation holes communicate with heat dissipation pipes; connecting holes are formed in the two sides of the opening end of the heat dissipation pipe, electromagnets are installed in the two connecting holes, when fire extinguishing is conducted in the cabinet body, electrical equipment which is not burnt and damaged in the cabinet body cannot be damaged, oxygen is isolated when a fire occurs in the cabinet body, and therefore the fire extinguishing efficiency and effect are improved.