51results about How to "Reduce the chance of corrosion" patented technology

The invention relates to a heat-tracing type solar heat collecting tube. The heat-tracing type solar heat collecting tube comprises a transparent tube, a heat absorbing tube and a light reflecting film. The space between the transparent tube and the heat absorbing tube is vacuumized. The light reflecting film is further fixedly installed on the inner tube wall of the transparent tube. The transparent tube is rotatably installed on a machine body. The transparent tube is further coaxially sleeved with a transmission tube which is connected with the transparent tube through transmission gears. The axes of the transmission gears are parallel to the axis of the transparent tube, and the transmission gears are circumferentially and evenly distributed on the outer circumferential wall of the transparent tube at equal intervals. The transmission tube is further coaxially and fixedly sleeved with a heat tracing ring, and the outer ring wall of the heat tracing ring is made of heat absorbing materials. The heat tracing ring is closely filled with heat expansion balls. The heat collecting tube effectively improves the heat-absorbing surface and meanwhile can be kept directly facing sunlight in real time, and the utilization rate of solar energy is greatly increased.

The invention belongs to the technical field of lightning protection and grounding for electric power, railways, telecommunications, factories and mines, high-rise buildings and the like, and particularly relates to a graphite composite resistance-reduction cloth production process. The graphite composite resistance-reduction cloth production process comprises the following steps that expansible graphite with the carbon content being 99.5 percent or more is selected and high-temperature expansion is conducted at 1000 DEG C, so that graphite worms are obtained; the surface of special fiber is evenly immersed with an adhesive; the special fiber is evenly laid between an upper layer of electricity-conducting low-resistance graphite coiled material and a lower layer of electricity-conducting low-resistance graphite coiled material; the composite electricity-conducting low-resistance graphite coiled materials are cut into electricity-conducting low-resistance graphite belts; the electricity-conducting low-resistance graphite belts are made into electricity-conducting low-resistance graphite yarn through a twisting machine in a unidirectional twisting mode; the graphite composite resistance-reduction cloth is woven by a braiding machine through the electricity-conducting low-resistance graphite yarn formed in a twisted mode. The graphite composite resistance-reduction cloth production process is simple, controllable in production cost and capable of bringing convenience to large-scale production, application and popularization.

The invention an aluminum alloy material of a two-piece can body of a pop-top can and a production method for the aluminum alloy material. The production process comprises fusion casting, saw cutting, surface milling, soaking, (1+4) hot continuous rolling, three-rack cold continuous rolling and trimming, wherein smelting molten aluminum consists of the following alloy elements in percentage by weight: 0.170-0.300% of Si, 0.350-0.500% of Fe, 0.100-0.250% of Cu, 0.800-0.920% of Mn, 1.100-1.280% of Mg, less than or equal to 0.03% of Cr, less than or equal to 0.05% of Zn, less than or equal to 0.02% of Ti, less than or equal to 0.02% of single impurity, less than or equal to 1.10% of total impurities, and the balance of Al. According to the production method for the two-piece can body material of the pop-top can, the production flow is shortened, the production efficiency is improved, the yield is increased, performances of the aluminum material are better than those of an aluminum material produced by a single rack, and the probability that surface quality defects occur is reduced.

The invention belongs to the technical field of lithium-ion cells, and particularly relates to an aluminum plastic membrane of a polymer lithium-ion power cell. The aluminum plastic membrane comprises an aluminum plastic membrane body and grooves formed in the aluminum plastic membrane body, wherein the grooves comprise a first groove and a second groove which is formed in parallel to the first groove; slopes are respectively arranged at one ends or both ends of the first groove and the second groove. According to the invention, an electric core is in better fit with the first groove and the second groove of the aluminum plastic membrane, the situation that the inner part of the aluminum plastic membrane is cut through due to the extrusion of an exposed part of the electric core is avoided, the risks of corrosion, protrusion and leakage of the inner part of the electric core are further reduced, and the quality and the appearance of the polymer lithium-ion power cell are ensured; in addition, the invention further discloses a shell punching method of the aluminum plastic membrane of the polymer lithium-ion power cell.

The invention discloses a glass fiber anchor rod and a construction method. The glass fiber anchor rod comprises an anchor head, a rod body, a stop-grouting plug and an anchor accessory, wherein one end of the rod body is connected with the anchor head, and the other end of the rod body is in sliding connection with the stop-grouting plug and the anchor accessory; the stop-grouting plug is located between the anchor head and the anchor accessory; the rod body is of a hollow structure and is made of glass fibers; and the rod body is provided with a plurality of openings, and the openings communicate with the hollow structure of the rod body. The method comprises the steps of drilling, hole cleaning, installation of the anchor rod, grouting, anchorage and the like. By the adoption of the glass fiber anchor rod and the construction method, the bearing capacity and the tensile capacity of the rod body can be improved advantageously, the construction cost is reduced, a whole installation hole and surrounding cracks can easily be densely filled, and overall strength is improved. By the adoption of the method, the filling effect of grout to surrounding rock cracks can be improved, the grouting compaction degree is increased, the probability of corrosion to the rod body is lowered, the service life is prolonged, construction efficiency is improved, and construction safety is improved.

The invention discloses a method for catalyzing a polymer with a multi-metallic catalyst to compound a carbon nano-tube in situ, which relates to a method for preparing nano-tubes. The method solves the problems of complicated process, low yield, high cost, equipment corrosion caused by taking halogen compounds as synergists and the like in the conventional preparation method of the nano-tubes. The method comprises the following steps of: 1, uniformly mixing polyolefin and the multi-metallic catalyst at the melting temperature of the polyolefin to obtain a mixture; and 2, feeding the mixture into a quartz tube, and performing pyrolysis or combustion to obtain the carbon nano-tube. The method has the advantages of simple process, high yield, low production cost and less corrosion to the equipment.

The invention relates to offshore wind power generation equipment with a damp-proof function. The equipment comprises a main body, a mounting base and a power generation mechanism, and further comprises a dehumidification mechanism and a salt mist removal mechanism, wherein the dehumidification mechanism comprises a connecting box, an air inlet pipe, an air outlet pipe, an air cylinder, a piston,an air rod, a movable plate, a spring, a driving component and a connecting pipe; the salt mist removal mechanism comprises a floating plate, a water suction pump, a water inlet pipe, a water outlet pipe, a second bearing, two control components and a plurality of nozzles. The offshore wind power generation equipment with the damp-proof function sprays clean water to the periphery of the equipmentthrough the salt mist removal mechanism, the salt mist removing function is achieved, and the equipment corrosion probability is reduced; and the function of dehumidifying the interior of the main body is achieved through the dehumidification mechanism, the probability that a power generator is damaged due to damp is reduced, and the safety of equipment is improved.

The invention relates to charging equipment with a plug protection function. The charging equipment comprises an energy saving mechanism, a main body, a control board and a protection mechanism, wherein the energy saving mechanism comprises a driving component, a rotary shaft, a rotary board, a solar panel and two bearings; the protection mechanism comprises a charging gun, a protection cover, a fixing component and two fixing blocks; the fixing component comprises an air cylinder, a piston, an air inlet pipe, an air outlet pipe, a power unit, two springs and two fixing units; and each fixingunit comprises a sucking disk and a connecting pipe. By use of the charging equipment with the plug protection function, a solar energy power generation function is realized, power is supplied for theequipment, energy is saved, environment protection properties are improved, a charging gun protection function is realized through the protection mechanism, a possibility that the charging gun is corroded by rainwater is reduced, and safety is improved.

The invention relates to a substrate bonding process and a substrate module to be bonded, wherein a peripheral rubber frame is arranged on the surface of a substrate of the substrate module to be bonded, boxed rubber frames are arranged in the peripheral rubber frame, and the height of the boxed rubber frames is greater than the height of the peripheral rubber frame. The substrate bonding process includes the following steps that the peripheral rubber frame is arranged on the surface of a first substrate, the boxed rubber frames for sealing liquid crystal are arranged in the peripheral rubber frame, and the height of the boxed rubber frames is greater than the height of the peripheral rubber frame; the air between the first substrate and a second substrate is sucked off; the first substrate and the second substrate are preliminarily bonded; gas is filled in between the first substrate and the second substrate; the first substrate and the second substrate are further bonded. The technical scheme of the invention can prevent the liquid crystal in the boxes from impacting the boxed rubber frames to cause penetration, save process time and cost and decrease the probability that circuit wires and element switches are corroded by acid liquid.

The invention introduces a polyurethane anechoic tile product and a preparation method thereof. A thick plate of a polyurethane anechoic tile is prepared into a slabbed construction which is 40-60mm thick with a vocal tract hole structure and the size can be determined according to the size of a die. The tile can be prepared by simulating 10 times of the area of the existing acoustic tile, so that the single tile area of the anechoic tile is effectively improved, the joint of the anechoic tile is effectively reduced and the damage probability of the anechoic tile is effectively reduced. The polyurethane anechoic tile prepared by the preparation method realizes the material performance and the water acoustic absorption performance of the existing rubber anechoic tile and is technically probable of replacing original rubber anechoic tile. The tile is the invention which is suitable for the technical field of coating anechoic tiles outside ships and has an actual application value.

The invention relates to a charging pile with a dampproof function. The charging pile comprises a body and a charging gun and further comprises a drying mechanism and a rainproof mechanism. The rainproof mechanism comprises a sleeve ring, a driving assembly and a cover plate. The driving assembly comprises a motor, a rotary rod and a connecting rod, and the drying mechanism comprises a filtering screen, a power assembly, a rotary assembly, a connecting assembly, a connecting box, a piston, a movable plate, a fixed box, a feeding pipe, a discharging pipe, an output pipe, a limiting assembly and two first springs. According to the charging pile with the dampproof function, the interior of the body can be dried and dehumidified through the drying mechanism, and it is avoided that the interior of the body is too damp, and consequently the normal work of electronic elements in the body is influenced; and by means of the rainproof mechanism, the charging gun is covered, a rainproof functionis achieved, the probability that the charging gun is corroded by rainwater is reduced, and safety is improved.

The invention discloses a method for selecting the rotating direction of a trisector regenerative air preheater of a large power station boiler, aiming to solve the problems that the present rotating direction of the air preheater always causes the moisture condensation of the air preheater or the insufficient drying output power of a pulverization system. The invention is characterized in that when the problems of air preheater moisture condensation caused by season changes or insufficient output power of the pulverization system appear, a motor is reversely rotated to drive a rotor to reversely rotate; and when a heat transfer element rotates, the heat transfer element sequentially passes through a smoke flowing area, a primary air flowing area and a secondary air flowing area for raising the temperature of primary air, thereby the problems of moisture condensation of the air preheater or drying output power of the pulverization system, and the like are solved.

The invention discloses a rigid corrugated composite pipe, which comprises an outer layer modified plastic pipe with the smooth outer surface, wherein an inner layer metal rigid corrugated pipe is pasted and covered in the outer layer modified plastic pipe, and an inner wall anti-corrosion layer also coats the inner surface of the inner layer metal rigid corrugated pipe. The invention also discloses a manufacturing method of the rigid corrugated composite pipe. Though the inner wall anti-corrosion layer and the outer layer modified plastic pipe, the contact between the inner layer metal rigid corrugated pipe and the outside air is completely avoided, the corrosion probability of the inner layer metal rigid corrugated pipe is reduced, and the service life of the composite pipe can be favorably prolonged; the inner layer metal rigid corrugated pipe can also improve the radial intensity of the composite pipe, so that the composite pipe can bear greater pressure; through the arrangement of the inner layer metal rigid corrugated pipe, the inner corrugations can be used for realizing the connection among greenhouse frameworks, the connection is very firm, the toughness and the torque-resistant capability are also enhanced, and the rigid corrugated composite pipe is more suitable to be used in regions with strong wind. The rigid corrugated composite pipe can be freely cut according to requirements and can be fast fixed and installed, and the standardized and scaled manufacturing, construction and application are favorably realized.

The invention discloses a sampling flow control device, which comprises a sample gas inflow channel, a carrier gas inflow channel, a flow control unit and at least two fluid control units for controlling a communicated state of a path, wherein the sample gas inflow channel and the carrier gas inflow channel are communicated with the inlet end of the flow control unit through at least one fluid control unit respectively, and the outlet end of the sample gas inlet flow and the outlet end of the flow control unit are communicated with at least one fluid control unit respectively to form the gas flow path of which a sample gas flow or a carrier gas flow can be selected to be calibrated by the flow control unit. The sampling flow control device is used for automatic calibration and checking forsampling of a sample gas, so that long-term working stability and accuracy of sampling of the sample gas are ensured; the sampling flow control device is maximally used, so that the cost is reduced;the performance of the whole gas analyzer is ensured, and meanwhile, the service life of the flow control unit of the sampling flow control device is greatly prolonged.

The invention belongs to the technical field of materials and particularly relates to a corrosion-resistant nano-graphene color-coated plate. The color-coated plate comprises a finishing coating, a primer coating, a first corrosion resisting layer, a substrate, a second corrosion resisting layer and a back coating which are arranged in a sequential-laminated manner, wherein the strength of graphene in the first corrosion resisting layer is matched with damage resistance of wax powder, so that the first corrosion resisting layer is high in hardness and dense in structure, intrusion of water andoxygen is effectively prevented, and the probability of corrosion of the substrate is lowered; talcum powder, the wax powder and titanium dioxide are matched with one another, so that the chemical stability of the first corrosion resisting layer is improved, and the occurrence of corrosion is reduced; methyl cellulose is matched with polyvinyl alcohol, thus, the second corrosion resisting layer is good in film forming property, the toughness is improved, and precipitated barium sulfate can be uniformly dispersed in the second corrosion resisting layer and is free of agglomeration. According to the nano-graphene color-coated plate provided by the invention, nano graphene is added into the first and second corrosion resisting layers, excellent mechanical properties, chemical stability and hydrophobicity of the graphene are fully utilized, and the global corrosion resistance of the color-coated plate is improved.

The invention discloses an explosion-proof source bottle for a diffusion furnace. The pressure in the explosion-proof source bottle can be detected to meet a set value or not timely by respectively installing a pressure sensor and a pressure relief branch on an air inlet pipeline and an air outlet pipeline of the explosion-proof source bottle, the opening of a decompression valve of the pressure relief branch can be controlled to depressurize timely by a pressure controller, therefore, the normal working pressure of a diffusion technique can be ensured, and the safety protection function can be realized.

The invention belongs to the technical field of metal rust protection, and particularly provides a metal preservative comprising silicone oil, glycerol, polyamide, sodium pyrophosphate, acetic acid, oil-soluble phenolic resin, aluminum sulfate, citric acid, zinc dialkyl dithiophosphate, deionized water, paraffin and peppermint oil. According to the metal preservative, through adding the paraffin and the peppermint oil, a paraffin film can be formed on a handrail; the reduction degree of the metal preservative can be judged through observation of the thickness of the paraffin film after use fora long time; the metal preservative is coated in time when the paraffin film is thinner, so that the corrosion possibility of the handrail is reduced; meanwhile, the paraffin plays a certain role inblockage of marine organisms carried by seawater onto the surface of the handrail; when the paraffin is corroded by the marine organisms, the paraffin enters the bodies of the marine organisms, and the paraffin is hard to digest in the marine organisms; the survival possibility of the marine organisms is reduced; and meanwhile, the entered peppermint oil plays a certain role in stimulation to themarine organisms, and the residual marine organisms are further reduced.

The invention discloses a cylindrical steel protection clamping device suitable for offshore ship transportation in the technical field of offshore transportation equipment. The cylindrical steel protection clamping device comprises a mounting plate, two sets of clamping blocks are symmetrically arranged on the outer wall of the top of the mounting plate, the vertical sections of the clamping blocks are in an arc shape, a mounting groove is formed in the outer wall of the top of the mounting plate, a screw rod is inserted into the right side of an inner cavity of the mounting groove, two setsof screw sleeves are connected to the outer wall of the screw rod in a sleeving mode, the outer walls of the tops of the screw sleeves are fixedly connected with the outer walls of the bottoms of theclamping blocks, and protection devices are uniformly arranged on the outer walls of the sides, close to each other, of the two sets of clamping blocks. According to the cylindrical steel protection clamping device, the protection devices are in contact with the outer wall of cylindrical steel, so that the contact area between the clamping blocks and the cylindrical steel is reduced, and the area,which may be damaged, of an anti-corrosion layer on the surface of the cylindrical steel is reduced; and through the stretching and retracting of telescopic springs and telescopic rods, the pressureof the clamping blocks on the surface of the cylindrical steel is reduced, the probability of damage to the anti-corrosion layer on the surface of the cylindrical steel is reduced, and the cylindricalsteel is protected.

The invention belongs to the field of metal material surface modification, and particularly relates to a preparation method and application of a super-hydrophobic copper layer on a steel substrate. The preparation method of the modification-free super-hydrophobic copper layer comprises the following steps of: carrying out pre-treatment on the steel substrate; preparing an electro-deposition solution, namely mixing copper salt solution and potassium sodium tartrate solution, and then adding sodium hydroxide to obtain the electro-deposition solution; and executing electro-deposition process: depositing the electro-deposition solution on the metal surface by utilizing an electro-deposition technology to form a bionic micro-nano structure copper layer; and then placing the metal under the room temperature condition to obtain the modification-free super-hydrophobic copper layer. By reasonably selecting the type and composition of deposited metal, it is found for the first time that under the condition of reasonable electro-deposition parameters, electro-deposition of copper metal on metal can form the bionic micro-nano structure copper layer, and the metal surface is endowed with excellent hydrophobic performance.

The invention discloses a circulating flushing device for strip steels. The circulating flushing device comprises a flushing tank in which a water inlet and a water outlet are formed; the water inlet is connected with a water tank; the flushing tank is connected with a circulation system that is connected with a gas recovery tower and provided with an inlet and an outlet; the inlet is connected with the water outlet, while the outlet is connected with the water inlet; and a liquid heater is arranged in the circulation system. In such a manner, the circulating flushing device for strip steels provided by the present invention is capable of providing sufficient flushing water, and also environment-friendly, economical and high in practicability because acid removal and dechlorination treatments are performed on a waste liquid containing an acidic liquid after flushing before the waste liquid is introduced into the flushing tank to be recycled; further, the probability of corrosion happening to the strip steels is effectively reduced.

The invention discloses an aluminum bonding pad manufacturing method. The method includes: depositing an etching barrier layer and a passivation protecting layer on a semiconductor substrate comprising a metal interconnection line in sequence; forming trenches in the passivation protecting layer and the etching barrier mater via photoetching and etching to expose the interconnection line on the semiconductor substrate; depositing aluminum metal on the surface of the passivation protecting layer inside and outside the trench to form an aluminum layer comprising recesses and protrusions, and enabling the bottom of the aluminum layer to contact with interconnection metal; adopting a pulse laser bombardment method to etch the aluminum layer so as to modify the morphology of the aluminum layer; depositing metallic aluminum on the aluminum layer to form a flat aluminum layer; and forming an aluminum bonding pad via photoetching and etching. The method has the advantages that the protrusions can be removed, depth of the recesses can be decreased, the aluminum bonding pad is more compact and is modified, a flat aluminum bonding pad layer is formed, residuals of etching reaction by-products are prevented, probability of corrosion to the aluminum bonding pad is lowered, and quality and reliability of the aluminum bonding pad are improved.

The invention discloses a multifunctional gas-liquid comprehensive heat exchange device. The device comprises a liquid disc, a liquid pump, a fan, a filler, a liquid pouring device and a heat exchanger; an inlet and an outlet of the heat exchanger are respectively connected with a heat exchange loop; the heat exchanger includes a heat exchanger I and a heat exchanger II serially connected with the heat exchanger I; the heat exchanger I is positioned on one side of the filler; the heat exchanger II is positioned in the liquid disc or the liquid pouring device; air blown out from the fan is blown to the heat exchanger I by the filler; the liquid pump is connected with the liquid disc; and in refrigeration, cooling liquid is pumped from the liquid disc, is poured onto the filler through the liquid pouring device, and flows back to the liquid disc. The device overcomes such technical problems as single function, low heat exchange efficiency, easy scaling of the heat exchanger and difficult maintenance in the prior art, can preferably solve multiple technical problems in application of a cooling tower type heat exchange device or an evaporation cooling heat exchange device in the prior art, and realizes the functional diversity and high efficiency of refrigeration or heating.

The invention discloses a method for preparing disodium hydrogen phosphate from a glyphosate mother liquor by using an ECO technology, and belongs to the field of chemical engineering production. Themethod comprises the following steps: (1) adjusting the pH value of the glyphosate mother liquor, and adding the adjusted mother liquor into an MVR evaporator; (2) completely transferring the obtainedmaterial into a crystallization kettle, and carrying out normal pressure crystallization; (3) carrying out solid-liquid separation after the material is crystallized; (4) carrying out normal pressuredegradation in a catalytic degradation tower; (5) carrying out heat exchange on the degraded wastewater to cool the wastewater to room temperature, transferring the cooled wastewater into an extraction tank, carrying out cooling and crystallization, pumping the obtained crystallized extract into a two-in-one filter press, and filtering the crystallized extract; and (6) washing the filtered solidwith water two times, discharging the washed solid, and packaging the solid for sale. The MVR evaporator is used to carry out concentration, so the purity of the product is ensured; and the electrocatalytic oxidation technology is used to catalytically degrade the glyphosate wastewater, so the disodium hydrogen phosphate can be obtained, the phosphorus resource and the salt resource can be recovered, and the cost is saved.

The invention belongs to the technical field of diaphragm pumps, and discloses a double-diaphragm pump adjusting device. The double-diaphragm pump adjusting device comprises a pump body and two pump heads connected with the pump body; diaphragm sheets are arranged in the pump heads and connected with spring shafts; the spring shafts are arranged in the pump body, and the pump body is further internally provided with an eccentric shaft; the two pump heads communicate with each other through an upper connection pipe set and a lower connection pipe set; the pump body is provided with a rotary adjusting device body extending into the pump body, the rotary adjusting device body is connected with an adjusting cam, and the adjusting cam abuts against the spring shafts; and the rotary adjusting device body is a planetary gear adjusting device and comprises a rotary rod, a first gear is arranged on the rotary rod, a gear disc is arranged between the eccentric shaft and the first gear, the top of the gear disc is provided with a plurality of second gears engaged with the first gear, and the bottom of the gear disc is connected with the adjusting cam. According to the double-diaphragm pump adjusting device, the concept is ingenious, and the technical problem that in the prior art, generally, the flow of a double-diaphragm pump is adjusted by two pump heads separately, and the two pump heads cannot adjust the flow at the same time is solved.

The present invention provides a substrate fitting process and a substrate assembly to be fitted, wherein the substrate assembly to be fitted of the present invention, a periphery mold frame is disposed on a surface of a substrate, a cell mold frame is disposed inside said periphery mold frame, the height of said cell mold frame is larger than the height of said periphery mold frame. A substrate fitting process of the present invention comprises: providing a cell mold frame on a surface of a first substrate, providing a cell mold frame inside the periphery mold frame for sealing liquid crystal, the height of said cell mold frame is larger than the height of the periphery mold frame; extracting the air between the first substrate and the second substrate; making the first substrate fit with the second substrate preliminarily; filling the air between the first substrate and the second substrate; making the first substrate further fit with the second substrate. With the technical solution of the present invention, the puncture caused by the impact of the in-cell liquid crystal onto the cell mold frame is prevented, and the time and the costs of the process is decreased, meanwhile the probability of the circuit metal wire and the component switch on the liquid crystal panel suffering corrode of the thinning acid is decreased.

The invention relates to a charging device with a plug protection function, which includes an energy-saving mechanism, a main body, a control board and a protection mechanism. The energy-saving mechanism includes a drive assembly, a rotating shaft, a rotating plate, a solar panel and two bearings. The protection mechanism includes Charging gun, protective cover, fixing assembly and two fixing blocks. The fixing assembly includes an air cylinder, a piston, an air intake pipe, an air outlet pipe, a power unit, two springs and two fixing units. The fixing unit includes a suction cup and a connecting pipe , the charging device with plug protection function realizes the function of solar power generation through the energy-saving mechanism, supplies power to the device, saves energy, and improves environmental protection. Through the protection mechanism, the function of protecting the charging gun is realized, and the charging gun is reduced. The chance of being corroded by rainwater improves safety.

The invention belongs to the technical field of materials and particularly relates to a corrosion-resistant nano-graphene color-coated plate. The color-coated plate comprises a finishing coating, a primer coating, a first corrosion resisting layer, a substrate, a second corrosion resisting layer and a back coating which are arranged in a sequential-laminated manner, wherein the strength of graphene in the first corrosion resisting layer is matched with damage resistance of wax powder, so that the first corrosion resisting layer is high in hardness and dense in structure, intrusion of water andoxygen is effectively prevented, and the probability of corrosion of the substrate is lowered; talcum powder, the wax powder and titanium dioxide are matched with one another, so that the chemical stability of the first corrosion resisting layer is improved, and the occurrence of corrosion is reduced; methyl cellulose is matched with polyvinyl alcohol, thus, the second corrosion resisting layer is good in film forming property, the toughness is improved, and precipitated barium sulfate can be uniformly dispersed in the second corrosion resisting layer and is free of agglomeration. According to the nano-graphene color-coated plate provided by the invention, nano graphene is added into the first and second corrosion resisting layers, excellent mechanical properties, chemical stability and hydrophobicity of the graphene are fully utilized, and the global corrosion resistance of the color-coated plate is improved.

The invention belongs to the technical field of diaphragm pumps, and discloses a double-diaphragm pump adjusting device. The double-diaphragm pump adjusting device comprises a pump body and two pump heads connected with the pump body; diaphragm sheets are arranged in the pump heads and connected with spring shafts; the spring shafts are arranged in the pump body, and the pump body is further internally provided with an eccentric shaft; the two pump heads communicate with each other through an upper connection pipe set and a lower connection pipe set; the pump body is provided with a rotary adjusting device body extending into the pump body, the rotary adjusting device body is connected with an adjusting cam, and the adjusting cam abuts against the spring shafts; and the rotary adjusting device body is a planetary gear adjusting device and comprises a rotary rod, a first gear is arranged on the rotary rod, a gear disc is arranged between the eccentric shaft and the first gear, the top of the gear disc is provided with a plurality of second gears engaged with the first gear, and the bottom of the gear disc is connected with the adjusting cam. According to the double-diaphragm pump adjusting device, the concept is ingenious, and the technical problem that in the prior art, generally, the flow of a double-diaphragm pump is adjusted by two pump heads separately, and the two pump heads cannot adjust the flow at the same time is solved.

The invention relates to the field of metallurgy, and discloses a pulverizing system with an external feeding function and a blast furnace blowing system. The pulverizing system comprises a pulverized coal manufacturing system, and an external supplying system for adding powder and particle materials from the outside into the pulverized coal manufacturing system. Gas which is separated from separation equipment of the external supplying system and contains a small amount of dust is exhausted after the dust is filtered through a filter device. The separation equipment directly conveys separated powder materials meeting blowing requirements into a pipeline or equipment on the downstream portion of a coal mill, and the powder materials are not ground repeatedly through the coal mill. In this way, the coal mill does not grind fine powder meeting the blowing requirements, energy consumption is reduced, and the grinding efficiency is improved. The external supplying system is further provided with a heating device, and the externally added materials are heated, so that the situations that the externally added materials are caked, and the liquidity is reduced are avoided. In addition, the externally supplying system adopts a sealed pneumatic conveying mode, water spraying dust suppression treatment is not needed, procedures are simplified, and equipment corrosion is relieved. The blast furnace blowing system comprises the pulverizing system and a coal powder injection tank.