43results about How to "Insulation erosion" patented technology

The invention discloses a corrosion-resistant neodymium-iron-boron magnet and a preparation method, and belongs to the technical field of neodymium-iron-boron magnets, and the preparation method of the corrosion-resistant neodymium-iron-boron magnet is characterized by comprising the following steps: S1, uniformly mixing neodymium-iron-boron powder obtained by jet milling with alloy nano-powder, and sieving to obtain a mixed material, wherein the adding amount of the alloy nanometer powder is 0.2-0.8% of the weight of the neodymium iron boron powder; s2, compression molding: carrying out compression molding and oil isostatic pressing on the mixed material to obtain a pressed blank; s3, sintering molding: sintering the pressed blank to obtain a neodymium-iron-boron magnet; s4, carrying out pretreatment on the neodymium-iron-boron magnet; and S5, preparing a coating solution, stirring and mixing silane, a solvent and water according to the weight ratio of 1: (0.8-1.2): (2.2-2.8) to prepare a silane hydrolysate, then adding zinc and aluminum sheet-shaped powder, uniformly stirring and mixing, spraying, and drying to obtain the corrosion-resistant neodymium-iron-boron magnet, thereby achieving the effect of improving the corrosion resistance of the neodymium-iron-boron magnet.

The invention discloses an impact-resistant and tear-resistant cable and a processing technology thereof, and belongs to the technical field of cables. The impact-resistant and tear-resistant cable sequentially comprises a conductor, an insulating layer, a multi-stage composite enhancement layer, an oxygen barrier layer and an outer protective layer from inside to outside, the conductor is formed by twisting a nickel-plated copper wire and a pure nickel wire; the insulating layer is formed by wrapping and covering a tetrafluoroethylene-perfluoroalkoxy vinyl ether copolymer; the oxygen isolation layer is formed by smearing a diamond mud oxygen isolation material; the multi-stage composite reinforcement layer is prepared by compounding carbon fibers and a bio-based polymer composite material; the outer protective layer is formed by molding and wrapping thermoplastic dynamic vulcanized rubber; the cable provided by the invention has excellent impact resistance and tear resistance.

The utility model discloses a moisture-proof and anti-corrosion power box, which comprises a box body, a box door arranged on the front side of the box body, a power panel arranged in the box body, heat dissipation net plates arranged on two sides of the box body, a triangular bracket arranged on the lower side of the box body, a flashing board arranged on the upper side of the box body, a condensation mechanism arranged on the inner wall of the box body, and a connecting plate arranged at the upper end of the box body, the outer side of the box body is covered with a galvanized metal box, and the box door is connected with the galvanized metal box. According to the utility model, the metal box is galvanized by adopting a hot-dip galvanizing method, so that the service life of the metal box is prolonged, the metal box covers the outer side of the power box body, the erosion of the outside to the power box is effectively isolated, the service life of the power box is prolonged, and in addition, the condensation structure is additionally arranged in the box body, so that the service life of the power box is prolonged. Water vapor generated in the box body is condensed into water drops, the water drops flow into the water collection tank along the condensation plate and finally flow out of the power box, short-circuit damage of moisture to elements in the power box is avoided, and the use safety of the power box is enhanced.

This utility model relates to the field of gas safety equipment technology and discloses a safety base for a self-closing valve. The base includes a base with a protective mechanism on its top. The protective mechanism includes a protective box, a connecting box on the right side of which is in contact with the protective box. Movable plates are rotatably connected to the bottoms of both the protective box and the connecting box. A retaining seat is fixedly connected to the top of the base, and a self-closing valve is engaged with the top of the retaining seat. A limit component is provided on the top of the protective box, and pads are fixedly connected to the bottoms of both the protective box and the connecting box. A sealing component is provided on the left side of the connecting box. In this utility model, rapid opening and closing is achieved by sliding the movable plate along the base's groove. When opening, simply moving it to the sides releases the limit, and flipping the connecting box and the protective box exposes the self-closing valve, facilitating daily inspection and maintenance. Furthermore, the connecting box and the protective box can be closed during normal storage to protect the self-closing valve.

The utility model discloses a flat fire-resistant silicone rubber power cable, comprising a cable core, the cable core comprises four wire cores and a flame-retardant filling layer, the four wire cores are linearly arranged at equal intervals, a mica belting layer is arranged outside the flame-retardant filling layer, and the mica belting layer is attached to the flame-retardant filling layer. An inner sheath is arranged outside the mica belting layer, the inner sheath and the mica belting layer are formed through extrusion, an armor layer is arranged outside the inner sheath, the armor layer is attached to the inner sheath, a composite fire-resistant core layer is arranged outside the armor layer, an outer sheath is arranged outside the composite fire-resistant core layer, and an outer sheath is arranged outside the outer sheath. The outer sheath, the armor layer and the composite fire-resistant core layer are formed through extrusion, the composite fire-resistant core layer is arranged in the power cable, and the composite fire-resistant core layer and the outer sheath are combined to form double-layer protection, so that the fire-resistant performance of the cable is greatly improved, an enough fireproof effect is achieved when a fire disaster occurs, and the use safety of the cable is improved.

The utility model discloses an anti-loosening protective cover for a top cover bolt of a gasification furnace, which relates to the field of gasification furnaces, comprises an outer protective shell, an end head, a connecting part and a pressing part, and is characterized in that the outer protective shell is sleeved on the outer side of the bolt and is fixedly connected to the top of a top cover; the end cover is arranged at an opening in the top of the outer protective shell, and the connecting part is used for connecting the end cover and the outer protective shell, so that the end cover is detachably mounted at the top end of the outer protective shell. Therefore, looseness of the bolt caused by stress relaxation and mechanical vibration is effectively restrained, sealing connection between the gasification furnace top cover and the combustion chamber is guaranteed, medium leakage is prevented, the bolt is completely sealed through the outer protective shell and the end cover, erosion of high-temperature corrosion or dust environment to the surface of the bolt is isolated, the service life of the bolt is prolonged, and the service life of the gasification furnace is prolonged. The loosening risk is reduced, and the safety and the stability of the gasification furnace are improved.

The utility model relates to the technical field of inductor terminals, in particular to a copper-clad aluminum structure for an inductor connecting terminal. The connector comprises a connecting terminal and a copper-clad aluminum structure processed at the tail end of the connecting terminal, wherein the copper-clad aluminum structure is provided with a wrapping layer and a solid layer from outside to inside in sequence; the joint of the wrapping layer and the insulating paint layer protrudes outwards to form a protruding step. According to the utility model, the part, which is not coated with the insulating paint, of the tail end of the solid layer is inserted into the copper sleeve, and the wrapping layer extrudes part of the insulating paint layer to form the extrusion layer obliquely wrapping the solid layer, so that the wrapping is tight, and the erosion of the external environment is effectively isolated; the wrapping layer is in close contact with the solid layer, so that the conductivity is good; and a copper surface capable of being directly welded is provided, so that the weldability of the terminal is improved.

This invention discloses a waterborne epoxy curing agent, its preparation method, and its application, belonging to the field of waterborne epoxy coating technology. It solves the problems of slow drying speed, poor flash rust resistance, inadequate water and salt spray resistance, and reliance on organic solvents in existing waterborne epoxy curing agents. The preparation method includes the following steps: adding an aliphatic polyamine to a reaction vessel, heating to 70-80°C, and then adding a mixture of epoxy resin and polyethylene glycol diglycidyl ether dropwise for an addition reaction; maintaining the temperature after the addition is complete, and then performing vacuum distillation; adding maleic anhydride oil to the product after vacuum distillation, and heating to 90-95°C for a reaction; cooling after the reaction, and then adding deionized water dropwise for emulsification to obtain the waterborne epoxy curing agent. This invention utilizes green, solvent-free production, and the resulting curing agent exhibits fast drying speed, excellent flash rust resistance, water resistance, and salt spray resistance.

The present application relates to the technical field related to lighting, and discloses an LED street lamp for smart cities. In order to solve the problem of poor heat dissipation and dust prevention of the street lamp, the power-connecting part of the lamp bead is placed in a relatively sealed liquid storage cavity, and a conductive liquid is introduced into the liquid storage cavity. Since the liquid storage cavity is relatively sealed, external dust is not easy to corrode the power-connecting part of the lamp bead, thereby ensuring the service life of the lamp bead. At the same time, during the lighting process of the lamp bead, the light box is continuously moved up and down to make the conductive liquid continuously flow in the liquid storage cavity, and the lamp bead through which the conductive liquid passes will light up, thereby ensuring that the lamp bead can work intermittently and avoiding continuous temperature rise due to its continuous work, thereby finally achieving efficient heat dissipation and dust prevention effects.

The utility model provides a multifunctional sealing element testing device. The device comprises a pressure test chamber and a safety monitoring pressure relief assembly, the pressure test chamber comprises an upper die holder and a lower die holder which are detachably clamped, the lower die holder is integrally formed with a medium cavity and is filled with a liquid or gas test medium, and a to-be-tested sealing ring is placed in a sealing groove in the periphery of the cavity; an air inlet and an air outlet in the upper portion of the medium cavity are sequentially connected with a first pipe connector, a copper pipe, a second pipe connector, a first valve block, a third pipe connector and a second valve block, a pressure gauge and a pressure sensor are arranged on the top of the first valve block, the lateral ball valve is a first-stage pressure relief opening, the second valve block is provided with a thermometer and a temperature sensor, and the ball valve on the other side forms a second-stage pressure relief opening. Therefore, temperature-pressure dual-redundancy monitoring and graded pressure relief are realized. The device is compact in structure and easy and convenient to assemble and disassemble, high-temperature corrosive medium and high-pressure coupling loading can be completed in a single platform, data can be collected in real time, and the safety and efficiency of reliability evaluation of the sealing element are remarkably improved.

The utility model discloses a limit switch for power distribution control equipment, which comprises a limit switch body, the limit switch body is embedded in a cabinet door, and a power distribution cabinet is arranged on the right side of the cabinet door; according to the utility model, the limit switch body is embedded in the mounting groove of the cabinet door, and the waterproof films are arranged at the opening of the metal shell of the limit switch body corresponding to the closing switch and the tripping switch; the protruding structures of the closing switch and the tripping switch form two protruding parts on the surface of the waterproof film, and the wave structures arranged on the two sides of the protruding parts are combined, so that a buffer space is provided for normal work of the closing switch and the tripping switch; and the metal shell and the waterproof film of the limit switch body provide an all-around protection effect for the closing switch and the tripping switch, so that the corrosion of sewage and humid gas in the external environment to the limit switch body can be obviously isolated.

The utility model discloses a gate valve structure relates to gate valve technical field. Including the valve cover, the valve cover inside is provided with the valve plate, and the valve plate is in the valve cover and goes up and down and lifts to carry out valve opening and closing action, and the valve plate top is provided with valve drive shaft, and the valve drive shaft includes the fixed screw rod of valve plate connection and is used for with screw rod screw joint cooperation realizes the sleeve shaft for valve plate lifting, and the sleeve shaft place is fixed with the outer plastic pipe, and the screw rod place is fixed with the inner plastic pipe. The utility model discloses through the structure setting of inner plastic pipe and outer plastic pipe etc.

The utility model discloses a sliding door and window buffer damping device relates to door and window technical field. The utility model discloses a frame, and the frame inside is installed with the door and window body, and the door and window body one side is provided with sealing mechanism. The utility model discloses the cooperation of the horizontal plate, the movable slot and the opening and closing type sealing gasket in sealing mechanism, effectively insulates the erosion of external environment to buffer mechanism, avoids the aging or damage caused by ultraviolet rays, rainwater and dust, and significantly prolongs the service life of device. Meanwhile, the sealing structure always keeps closed state when the door and window slide, further improves the sealing performance, and the buffer mechanism realizes the primary deceleration through the contact of the roller and the buffer deceleration pad, combines the spring, the elastic deformation of movable plate and absorbs the impact energy, forms the first -stage buffer, and the rubber insertion rod and the buffer pad's friction cooperation further consume the kinetic energy, form second -stage buffer. Multistage buffer design significantly reduces the impact force and noise when the door and window close, and improves the use comfort.

The invention discloses an organic-solvent-free high-efficiency normal-temperature passivator as well as a preparation method and application thereof. The preparation method comprises the following steps: preparing an acrylate emulsion by adopting a reactive emulsifier containing oil acid radicals, and mixing the acrylate emulsion serving as a main body and tannic acid-polyamine polymer particles serving as a filling agent to obtain the passivator. The surface of the pyrite tailings is coated and passivated through a spraying or dipping method, a passive film is formed at normal temperature, and tailings oxidation can be efficiently inhibited. The passivator takes water as a dispersion medium, does not need an organic solvent, and overcomes the limitation that an organosilane passivating material needs high-temperature curing and depends on the organic solvent. Coordination bonds are formed between oleate radicals and pyrite tailings, so that the adhesion performance of a passive film is improved; and the filler can further improve the density and oxidation resistance of the passivation film, so that the passivation performance of the passivator is improved. The passivator provided by the invention is simple in preparation process, green, environment-friendly, low in cost and suitable for large-scale application in the field of metal tailing treatment.

The invention belongs to the technical field of line protection devices, and provides a circuit board anti-burning protector, which comprises a fuse used for automatically fusing when overload or short circuit occurs in a circuit, and a protection sleeve arranged outside the fuse and used for protecting the circuit board. The protective sleeve is used for preventing the fuse from being interfered or damaged by an external environment in a normal working state and facilitating the installation and replacement of the fuse; and the bottom box is installed at the lower end of the protective sleeve, and the bottom box is used for installing the protector in a circuit board and is used for supporting and protecting the fuse. The fuse is sealed through the protective sleeve, the bottom box, the limiting piece and the guiding piece, direct contact between the fuse and the external environment can be effectively isolated, so that the electric shock risk caused by mistaken touch or circuit faults is remarkably reduced, the influence of physical factors such as vibration and impact in the external environment on the fuse can be reduced, and the service life of the fuse is prolonged. And poor circuit contact caused by the influence of the fuse is avoided, so that the stability and the reliability can be improved.

The utility model discloses a double-glass photovoltaic module, which relates to the technical field of photovoltaic power generation and comprises front glass, back plate glass, double-sided battery pieces and butyl rubber strips. The double-sided battery piece is bonded and fixed between the front glass and the back plate glass; the butyl rubber strip is sleeved on the peripheral side of the double-sided battery piece, and the butyl rubber strip is packaged on the peripheral edges of the two opposite surfaces of the front glass and the back glass in a hot melting manner; wherein a first packaging adhesive film is bonded and fixed between the front glass and the double-sided battery piece, and a second packaging adhesive film is bonded and fixed between the double-sided battery piece and the back plate glass. According to the utility model, the double-sided battery piece is used for double-sided power generation, thereby improving the power generation power of the photovoltaic assembly; the weather resistance and the fireproof grade of the photovoltaic module are improved by using the double-layer glass; the butyl adhesive tape is sealed at the edges of the front glass and the back glass through hot melting, so that the sealing performance and the service life of the photovoltaic module are improved.

The invention provides low-to-high temperature-resistant non-pollution hydrogen-purity lubricating grease for rubber and a preparation method and application thereof, and belongs to the technical field of lubricating materials, the lubricating grease comprises the following raw material components by mass percentage: 83% of perfluoropolyether PFPE, 10% of polytetrafluoroethylene PTFE as a thickener, 5% of polytetrafluoroethylene PTFE as a solid lubricant, 2% of nano cellulose nanocrystal, 1% of an antioxidant, 1% of a lubricant, and 1% of a lubricant. By combining a preparation method of nanocrystalline mediation, mixing homogenization and grinding degassing, the defects that an existing lubricant cannot cover a wide temperature range of-40 DEG C to 250 DEG C, impurities are easily released when the lubricant is used on an elastomer to influence the purity of hydrogen, hydrogen embrittlement is easily caused when the lubricant does not concurrently with the elastomer, and the lubricant is easy to fall off at high temperature to cause degradation of a rubber sealing element are overcome; the long-acting lubricating protection of the rubber sealing element under the high-temperature working condition of a shield tunnel and hydrogen energy source scenes such as a hydrogen pipeline valve, a fuel cell stack and a hydrogen refueling station is realized, and the abrasion of equipment parts can be effectively reduced while the stable sealing performance is ensured.

The application relates to a high-selectivity acid-resistant nanofiltration membrane and a preparation method and application thereof, and belongs to the field of membrane separation technology. The preparation method of the high-selectivity acid-resistant nanofiltration membrane comprises the following steps: (1) soaking a polysulfone membrane in an aqueous solution containing a strong oxidant and a metal chloride; (2) immersing the membrane treated in the step (1) into a n-hexane solution containing a pyrrole molecule and standing; (3) spraying a mixed ethanol solution of phenol and formaldehyde onto the membrane treated in the step (2); and (4) post-treating the membrane treated in the step (3) in a hot sodium hydroxide solution containing a surfactant to obtain the high-selectivity acid-resistant nanofiltration membrane. The application has the advantages of simple process, easily-obtained raw materials and suitability for industrial production. Meanwhile, the high-selectivity acid-resistant nanofiltration membrane has high selectivity of divalent ions and monovalent ions on the premise of strong acid resistance, and is suitable for salt separation treatment of acid industrial wastewater.

This invention relates to the field of electric vehicle charging technology, specifically to a high-safety, high-power wireless charging device and method for automobiles. The mounting frame and connecting lines are located underground. A sliding groove is formed at the upper end of the mounting frame, and a protective top plate is slidably installed within the sliding groove. The protective top plate is located on the ground. A bidirectional threaded rod is rotatably installed inside the sliding groove. A connecting bracket is movably installed inside the mounting frame, and a charging component is nested inside the upper end of the connecting bracket. An electric push rod is fixedly installed inside the mounting frame, and the output end of the electric push rod is connected to the bottom of the connecting bracket. A protective cleaning mechanism and a heat dissipation adjustment mechanism scrape and clean the surface of the charging component, keeping the coil surface clean and improving coupling efficiency. Simultaneously, hydraulic linkage of the hydraulic cylinder automatically matches the heat dissipation intensity with the charging rate and heat generation intensity, achieving energy saving and high efficiency.

The utility model discloses a gate valve structure relates to gate valve technical field. Including the valve cover, the valve cover inside is provided with the valve plate, and the valve plate is in the valve cover and goes up and down and lifts to carry out valve opening and closing action, and the valve plate top is provided with valve drive shaft, and the valve drive shaft includes the fixed screw rod of valve plate connection and is used for with screw rod screw joint cooperation realizes the sleeve shaft for valve plate lifting, and the sleeve shaft place is fixed with the outer plastic pipe, and the screw rod place is fixed with the inner plastic pipe. The utility model discloses through the structure setting of inner plastic pipe and outer plastic pipe etc.

The application provides a purification and noise elimination integrated secondary return air structure of an air handling unit and a method thereof, and belongs to the technical field of air handling units, wherein the purification and noise elimination integrated secondary return air structure of the air handling unit comprises: an air handling unit, the inside of the air handling unit is provided with a vertical partition plate, a horizontal partition plate, a fan, a fine filter screen and a linkage mechanism, the top and bottom of the horizontal partition plate are respectively provided with a first filter screen and a second filter screen, the top and bottom of the air handling unit are provided with driving mechanisms, the top end of the linkage mechanism is connected with a monitoring mechanism, and the upper side and the lower side of the horizontal partition plate are respectively provided with a secondary return air bin and a primary return air bin. The application utilizes airflow to drive linkage blades to rotate, drives a rotating rail to operate through meshing transmission of bevel gears, and accurately corresponds to the actual air flow rate inside the unit by means of a pressure sensor to sense pressure value changes, so that additional independent speed measuring equipment is not needed, and the real-time performance and accuracy of airflow monitoring are ensured.

The application relates to a primary-secondary fusion built-in isolation knife circuit breaker, which comprises a box body arranged on one side of a pole-mounted circuit breaker, a box cover which is detachably buckled and installed at the top opening of the box body, an isolation knife switch unit arranged in the box body, an electrical connection device arranged on the outer wall of the box body and electrically connected with the isolation knife switch unit, and the electrical connection device being electrically connected with the pole-mounted circuit breaker; a control mechanism is arranged on the front face of the box body, and the control mechanism is used for controlling the opening and closing states of the isolation knife switch unit; when the control mechanism drives the isolation knife switch unit to be in the closed state, the isolation knife switch unit is rotated to be in plug-in conduction with the corresponding static contact; when the control mechanism drives the isolation knife switch unit to be in the open state, the isolation knife switch unit is rotated to the opposite direction to be in plug-in conduction with the corresponding safety device, and reliable isolation is completed; the safety device is connected with a grounding bolt arranged on the side of the box body; and the application has the advantages of reasonable structure, good protection effect, stable and reliable opening and closing operation and guaranteed electrical isolation.

The invention discloses a bisphenol A-based hexa-functional-group resin / glass fiber / diethylenetriamine composite material and a preparation method and application thereof, and belongs to the technical field of epoxy resin composites.The preparation method includes the steps that bisphenol A and formaldehyde are heated and stirred to be uniform, then epoxy chloropropane and a NaOH aqueous solution are added, the mixture is heated and stirred to be uniform, then methyl ethyl ketone is added, desalting is conducted, and the bisphenol A-based hexa-functional-group resin / glass fiber / diethylenetriamine composite material is obtained; the preparation method comprises the following steps: mixing bisphenol A-based hexa-functional-group resin and diethylenetriamine, distilling the resin to obtain bisphenol A-based hexa-functional-group resin, uniformly mixing the bisphenol A-based hexa-functional-group resin and diethylenetriamine, coating a plurality of glass fibers with the mixture, and performing high-temperature curing, pressing and cooling to obtain the bisphenol A-based hexa-functional-group resin / glass fiber / diethylenetriamine composite material. The bisphenol A-based hexa-functional-group resin is crosslinked with diethylenetriamine, so that the molecular chain of the epoxy resin is tighter, a stable crosslinked structure is formed, the curing efficiency is improved, and the product has higher hardness and glass transition temperature. The glass fiber is doped, so that the mechanical property of the epoxy resin is remarkably improved.

This utility model discloses a motor grounding wire, relating to the field of motor grounding wire technology. It includes a grounding wire, two sets of terminals, and a motor grounding screw. One set of terminals has a conductive ring fixed to one side, contacting the motor housing, and a protective cover fixed to its outer side. A sleeve is fixed inside the protective cover. A double-sided bolt is connected to the inner side of the sleeve, with an external thread on the outer side of the double-sided bolt that connects to the sleeve's thread. An internal thread on the inner side of the double-sided bolt connects to the motor grounding screw. The external thread of the double-sided bolt and the sleeve, along with the internal thread and the motor grounding screw, form a double-threaded locking mechanism. The contact ring presses against the motor housing, and the spring is passively compressed, forming a composite structure of rigid connection and elastic fastening. This effectively counteracts the risk of loosening caused by motor vibration. Compared to traditional single-nut connections, the vibration resistance is significantly improved, preventing grounding terminal loosening or detachment caused by vibration and ensuring the effectiveness of grounding protection.

The application provides a kind of integrated in vehicle chassis anti-collision wireless charging receiving end protection structure, it relates to new energy automobile wireless charging technical field, including: symmetric fixed installation in the inside of battery lower guard plate of vehicle chassis mounting plate, drive mechanism being located at the opposite side of the mounting plate and wireless charging receiving end assembly being connected with the drive mechanism;The one end of the drive mechanism is connected with the bearing frame, the inside of the bearing frame is contacted with the wireless charging receiving end assembly through the spring buffer anti-collision mechanism at one end;The other end is directly contacted with the wireless charging receiving end assembly;The application adopts the storage type design completely integrated in the inside of battery lower guard plate of chassis, the wireless charging receiving end is completely withdrawn into the closed storage cavity under non-charging state, and the bottom opening is closed by cooperating with the closable protection telescopic plate, to form a fully enclosed protection space, which reduces the damage probability of the receiving end from the root.

The invention discloses a titanium dioxide-quantum dot-silicon dioxide composite material with a multilayer core-shell structure as well as a preparation method and application of the titanium dioxide-quantum dot-silicon dioxide composite material. The core layer is composed of titanium dioxide nano-particles, the quantum dot middle layer is adsorbed to the surface of the core layer in a bridging mode through a silane coupling agent, and the compact silicon dioxide shell layer wraps the quantum dot middle layer. The method comprises the following steps: titanium dioxide nanoparticles are subjected to silanization modification to introduce sulfydryl, quantum dots are subjected to ligand exchange to obtain water-soluble sulfhydrylated quantum dots, the water-soluble sulfhydrylated quantum dots and the titanium dioxide nanoparticles form a quantum dot-titanium dioxide compound through interaction of the sulfydryl, and finally, a silicon dioxide shell is formed through silicon source hydrolytic condensation under a weak alkaline condition. Through core-functional layer-shell collaborative design, the problems that a traditional quantum dot composite material is weak in binding force, the quantum dots are prone to falling off and the stability is poor are solved, and the quantum dot composite material can be widely applied to the fields of photoelectric devices, photocatalytic materials and biological fluorescent markers.

The utility model discloses a movable smoke hood lifting mechanism of converter relates to movable smoke hood lifting mechanism technical field of converter, include: converter platform, the outer surface top rear part of converter platform is installed with the sealed cabin, the outer surface of sealed cabin is provided with ceramic coating, and the inside bottom of sealed cabin is provided with the notched, the inside front section of sealed cabin is installed with the hydraulic cylinder, the outer surface top of hydraulic cylinder electrically installs hydraulic drive unit, through the full -seal hydraulic drive and chain drive design, effectively avoids the problem that traditional screw rod is easy to jam. The sealed cabin is covered with ceramic coating, the hydraulic cylinder and the hydraulic drive unit form the full -enclosed structure in the inside, the high temperature dust erosion is isolated, compared with exposed type drive motor, the service life is prolonged, adopts chain cooperation double runner (first runner, second runner) transmission simultaneously, eliminates the risk of occlusion of screw pair because of dust accumulation, ensures that still can steady operation under 1200 DEG C flue gas environment.

This utility model relates to the field of electrostatic precipitator flue gas duct technology, and discloses a pre-flue gas duct device for electrostatic precipitators, including a flue gas duct. A spray device is installed inside the vertical section of the flue gas duct. A liquid receiving tank is fixedly installed at the bottom of the flue gas duct, and a drain pipe is embedded in the bottom of the liquid receiving tank. An electrically controlled valve is installed on the drain pipe. The spray device is located directly below the liquid receiving tank. A filter plate is embedded inside the flue gas duct, positioned directly above the liquid receiving tank. A sealing plate is slidably installed on the flue gas duct, and a handle is fixedly installed on the sealing plate. A slag pushing mechanism and a slag receiving mechanism are provided on the flue gas duct. This utility model, through spray granulation, solid-liquid separation, and automatic slag discharge design, effectively improves dust flowability, significantly reduces the risk of ash hopper blockage, and enhances the operational stability and maintenance convenience of the dust removal system.

The invention relates to a nano silicon-graphite composite negative electrode material with a carbon coating and aluminum metaphosphate composite modification layer on the surface, an application of the nano silicon-graphite composite negative electrode material and a button lithium ion battery. The nano silicon-graphite composite negative electrode material is prepared from the following components in percentage by mass: 4-10 percent of aluminum metaphosphate powder, 10 percent of asphalt cracked carbon, 15 percent of spherical nano silicon powder and 71-65 percent of graphite powder. The preparation method comprises the following steps: adding nano silicon powder into deionized water, carrying out ultrasonic dispersion, then adding graphite powder, carrying out ultrasonic stirring uniformly, then adding water-based asphalt, carrying out uniform stirring and mixing, carrying out spray drying, compounding the dried powder with metaphosphate, carrying out mechanical fusion, and finally transferring into a vacuum furnace for high-temperature carbonization. The composite modification layer on the surface of the nano silicon-graphite composite negative electrode material can well inhibit the corrosion of electrolyte to the nano silicon material, relieve volume expansion, improve conductivity and prolong the cycle life.

The utility model relates to the technical field of charging piles, in particular to a charging pile payment device. The device aims at solving the problems that an outdoor charging pile operation screen is prone to being affected by the environment and damaged, and an existing baffle structure is incomplete in protection and inconvenient to operate. The device comprises a charging pile control box body and an operation screen embedded in the charging pile control box body, side plates are fixed to the two sides of the operation screen, and a baffle used for shielding the operation screen is hinged between the side plates. The top of the baffle is connected with the box body through a waterproof elastic band, and the elastic band always covers the hinged gap to play a waterproof role when the baffle is opened and closed and provides auxiliary pulling force for opening of the baffle at the same time. A clamping plate with a clamping groove is arranged on the inner side of the baffle, a clamping column pushed by a spring is arranged in the side plate, and automatic locking can be achieved when the baffle is closed. And the side plate is also provided with an elastic sheet which can buffer the movement of the baffle plate during unlocking, so that sudden bounce is avoided. The device can effectively protect the operation screen from being exposed to the sun and rain, and can guarantee the convenience and safety of payment operation.