89results about How to "Reduce oxidation" patented technology

The invention relates to the technical field of preparation of silicon carbide ceramics, in particular to an in-situ reaction sintered silicon carbide ceramic and a preparation method thereof.The preparation method comprises the following technological stages which are conducted in sequence: S1, preparation of silicon carbide slurry, specifically, organic matter precursor raw materials are weighed according to the mass content percentage to form the silicon carbide slurry; s2, vacuum grouting: injecting the silicon carbide slurry in the vacuum grouting tank into the shaping mold from the bottom of the shaping mold to form a silicon carbide green body; and S3, in-situ reaction sintering is conducted, specifically, the silicon carbide green body is placed in a sintering furnace, heating, heat preservation and cooling are conducted on the silicon carbide green body in the argon atmosphere through a segmented temperature control technology, and the silicon carbide ceramic is obtained. The silicon carbide ceramic prepared by the method disclosed by the invention has relatively high density and excellent mechanical properties.

The invention belongs to the technical field of metallurgy, and particularly relates to a long-casting-time production method of food-grade tinplate. The tinplate comprises the following chemical components in percentage by mass: 0.040%-0.060% of C, less than or equal to 0.020% of Si, 0.20%-0.30% of Mn, less than or equal to 0.015% of P, less than or equal to 0.0080% of S, 0.025%-0.040% of Al, less than or equal to 0.060% of Cr, less than or equal to 0.060% of Cu, less than or equal to 0.060% of Ni, less than or equal to 0.010% of Nb, less than or equal to 0.010% of V, less than or equal to 0.010% of Ti, less than or equal to 0.0030% of B and the balance of iron and inevitable impurities. The production method comprises the steps of converter smelting, LF furnace refining, RH furnace net circulation and continuous casting protective pouring. On the basis of ensuring the cleanliness of the molten steel, the casting times are increased to more than 30, the production efficiency is high, and the product quality is good.

The invention belongs to the technical field of aluminum melt refining, and particularly relates to an aluminum melt refining modification treatment device which comprises a degassing box, the degassing box comprises a box body, a liquid inlet pipe and a liquid outlet pipe, a partition plate is rotationally connected into the box body, and the partition plate divides the box body into two cavities used for controlling the flowing path of molten aluminum; the inner cavity of the box body is dynamically divided into two independent cavities through the partition plate capable of rotating in the box body, and the generator in any cavity is isolated and overhauled by combining valve control of the liquid inlet pipe and the liquid outlet pipe; when the generator in any cavity needs to be overhauled, molten aluminum in the cavity where the faulted generator is located can be emptied, and the other cavity continues to conduct refining operation; the whole-line shutdown maintenance is changed into local and online maintenance, the shutdown time and energy waste caused by maintenance are reduced, oxidation and residual loss of molten aluminum are remarkably reduced, and the equipment utilization rate and the production economy are improved.

The application provides a cold-dissolved liver-protecting medicinal tea and a preparation method and application thereof. The preparation raw materials of the cold-dissolved liver-protecting medicinal tea include green tea, rattan tea, ginseng, lotus leaves, mulberries and hawthorn. The preparation method comprises the steps of grouping extraction and spray drying of the preparation raw materials. The air inlet temperature of the spray drying is 130-150 DEG C, and the air outlet temperature is 75-85 DEG C. The grouping extraction comprises jointly extracting the ginseng, mulberries and hawthorn, and jointly extracting the green tea, rattan tea and lotus leaves in the presence of cyclodextrin. The cyclodextrin comprises one or more of beta-cyclodextrin and hydroxypropyl-beta-cyclodextrin. The cold-dissolved liver-protecting medicinal tea is derived from natural plants, has a simple formula, is safe and effective, is convenient to use, and can retain active ingredients to the greatest extent.

The utility model relates to LED energy-saving lamp technical field, specifically disclose a good protective LED energy-saving lamp, including lamp stand, the inside installation of LED energy-saving lamp tube of lamp stand is provided with sealed protection mechanism and detachable limiting mechanism outside lamp stand, sealed protection mechanism includes the fixed frame of fixed connection in the outer wall of lamp stand, the below of fixed frame is provided with hard frame, the lower end fixed connection of hard frame has the protection cover of LED energy-saving lamp tube outside, the protection cover provides protection for the lamp tube, prevents the external force collision and breaks, simultaneously rectangular sealing ring continues to seal, can block the water vapor, the oil dirt and enter the inside, reduce the oxidation of the lamp tube element because of the erosion, thereby promote its service life and use safety, keep the position of moving block, push the protection cover to move right again, make the limiting column from the first limiting hole and draw out, can take down the protection cover and hard frame, at this moment, the lamp tube is completely exposed, is convenient for the replacement operation.

The utility model relates to the technical field of juicers, and discloses a multi-section type spiral juicer which comprises a supporting frame, an extrusion juicing mechanism is arranged at the upper end of the supporting frame and comprises a bottom containing shell, the middle of the inner wall of the front end of the bottom containing shell is rotationally connected with a trapezoidal shaft, and the trapezoidal shaft is arranged in the middle of the inner wall of the front end of the bottom containing shell. An auger blade is fixedly connected to the outer wall of the trapezoidal shaft, a crushing mechanism is arranged on the front portion of the upper end of the squeezing and juicing mechanism, and the crushing mechanism comprises a middle containing shell. According to the multifunctional juicer, the dicing mechanism, the crushing mechanism and the squeezing and juicing mechanism can be independently disassembled and assembled, a user can splice proper mechanisms according to requirements, the modularized detachable design enables all parts to be cleaned more easily, the user can clean all the parts in a targeted mode, and the practicability is high. The accumulation of pomace or bacteria is avoided, so that the sanitation and the service life of the equipment are better maintained.

The utility model relates to the technical field of cosmetic packaging, in particular to a serum protein active water film vacuum fresh-keeping glass bottle packaging device. The device comprises a storage assembly and a pumping assembly, the pumping assembly is connected with the storage assembly and extracts objects stored in the storage assembly outwards, the pumping assembly is externally connected with a smearing assembly, sealing assemblies are installed on the storage assembly and the smearing assembly, and the sealing assemblies control opening and closing installation. The storage assembly is designed to be in vacuum sealing, contact between oxygen in air and a serum protein active water film is remarkably reduced, the oxidation risk is reduced, the shelf life of the product is prolonged, the pumping assembly can accurately control the dosage extracted each time, waste is avoided, meanwhile, it is ensured that the dosage used each time is consistent, and the service life of the product is prolonged. The pumping mechanism reduces the opportunity that fingers of a user make direct contact with the product, pollution risks are reduced, product sanitation is guaranteed, the external smearing assembly is designed to be suitable for direct use, intermediate operation steps are reduced, and the user can smear the product easily.

The utility model discloses a fish oil mixing filter device with spiral heating pipe. Including heating assembly, stirring subassembly, filter component and feeding assembly. Heating assembly has open heating bucket and spiral heating pipe, stirring subassembly contains mixing cavity, hollow oil pipe, rotating electrical machine, rotating shaft and stirring blade, filter component is constituted by filter bucket, lifting platform and filter baffle, and the first oil inlet pipe and second oil inlet pipe of feeding assembly are connected with crude oil tank and lye pool respectively. The device integrates multiple component functions, heats up quickly and evenly, the spiral heating pipe increases the heat exchange area, solves the traditional heating malady, the mixing and filtering are integrated, the transfer link is saved, the oxidation risk and the viscosity increase problem are reduced, the filter and the maintenance are optimized, the convex design and the liftable platform can separate, replace and clean the filter material, the oil inlet pipe is beneficial to the accurate proportioning and initial mixing. The device is suitable for refining fish oil and other materials, has multiple advantages, effectively integrates the function and has remarkable benefits.

This invention discloses a chitosan-Chlamydomonas reinhardtii protein composite carrier, its preparation method, and its application. The composite carrier has a triple network structure, comprising: a three-dimensional network backbone formed by cross-linking chitosan and sodium tripolyphosphate, constituting the first network; a functional enhancing phase, including Chlamydomonas reinhardtii protein, which is embedded and anchored in the three-dimensional network backbone through a first physical interaction, constituting the second network, thereby forming a chitosan-Chlamydomonas reinhardtii protein complex with an interpenetrating network structure; and a structure-directing agent, including a hydrophobic active substance, which self-assembles and embeds into the hydrophobic microregions of the chitosan-Chlamydomonas reinhardtii protein complex through a second physical interaction, constituting the third network. The composite carrier provided by this invention is prepared using electrospinning technology, achieving high loading capacity and high encapsulation efficiency, constructing a multi-layered antioxidant defense network, and can serve as a highly efficient and stable multifunctional carrier for the preparation of functional food delivery materials.

This utility model belongs to the field of contact sheet technology, and particularly relates to a contact sheet for a switch socket, including a fixing part, with a first extension part on both the left and right sides of the fixing part. The side of the first extension part is provided with a trapezoidal groove, one end of which abuts against the fixing part, and the other end of which is connected to a trapezoidal protrusion. A second extension part extends from the other side of the first extension part, and a first angle is formed between the first extension part and the second extension part, with the first angle ranging from 80° to 82°. A trapezoidal groove and a trapezoidal protrusion are mirror-image provided on one side of the second extension part. A support part is provided at the bottom of the fixing part, and a second angle is formed between the support part and the fixing part, with the second angle ranging from 95° to 97°. A contact part extends horizontally from the end of the support part in a direction parallel to the fixing part. A silver dot is provided at each of the left and right ends of the contact part, and the silver dot is fixed to the surface of the contact part by riveting.

This utility model relates to the field of lipstick technology and discloses a lipstick with zero-degree silicone, including a tube body. An installation tube is fixedly connected to one side of the tube body, and a sealing cap is installed on the outside of the installation tube. An extension block is fixedly connected to the inner wall of one side of the sealing cap. A sealing gasket is fixedly connected to one end of the extension block away from the sealing cap, and a stopper is fixedly connected to the other end of the sealing gasket. A connecting tube is installed outside the installation tube, and an output cap is installed outside the connecting tube. A placement groove is provided on one side of the output cap. The outside of the stopper engages with the discharge port of the output cap. A tear-off assembly is provided on the outside of the tube body. In this utility model, the combination of the sealing cap and the installation tube, and the blocking of the stopper at the discharge port, effectively prevent the lipstick from being accidentally squeezed out during storage or transportation, thereby keeping the inner tube dry and clean.

This utility model relates to the field of gummy candy production technology and discloses a casting device for producing goji berry lutein ester gummy candies. It includes a material storage tank, an exhaust pipe fixedly installed at the upper end of the material storage tank, an exhaust valve disc fixedly installed at the inner side of the exhaust pipe, the exhaust valve disc having an annular cross-section, a sealing disc second at the upper end of the exhaust valve disc, a limiting rod second fixedly installed at the upper end of the sealing disc second, the upper end of the limiting rod second extending to the outside of the exhaust pipe, a gas conveying pipe second fixedly installed at the upper end of the exhaust pipe, and a gas storage cylinder fixedly installed at one end of the gas conveying pipe second. The technical effect is to automatically adjust the gas pressure inside the storage tank, avoiding casting pressure fluctuations caused by a drop in syrup level, ensuring consistent weight for each gummy candy, eliminating the impact of pressure fluctuations on the storage tank seals, reducing seal wear and leakage risks, and maintaining a slightly positive pressure environment inside the tank by injecting inert gas into the sealed cavity.

The application provides a method for improving the flavor and quality of tilapia surimi products, and belongs to the technical field of aquatic product processing, and comprises the following steps: tilapia muscles are cut into small pieces, an improving agent is added, and the muscles are ground; the well-stirred surimi is made into fish cakes and shaped; the fish cakes are taken out after floating, and are placed in cold water for cooling; the shaped fish cakes are respectively fried at 150 DEG C, 180 DEG C and 210 DEG C for 4 min; the fish cakes are vacuum packaged and stored in a refrigerator after cooling; the flavor of the surimi is analyzed, the quality of the surimi is detected, and the deterioration of the surimi is determined and analyzed; threonine, creatinine and glucose are dissolved in a phosphate buffer to obtain A liquid; diethylene glycol is taken, mixed with soybean oil, and mixed with an improving agent by vortexing to obtain B liquid; the A liquid and the B liquid are fully mixed in a 48 mL sealed high-temperature pressure-resistant reaction bottle, and then are placed in an oil bath for reaction and then are placed in an ice water bath for reaction termination; the solution after reaction is removed and is reserved; the MeIQx content, precursor substances and intermediate substances of the MeIQx generation simulation system solution after reaction simulation are determined.

The utility model discloses a kind of lubrication drainage liquid recycling's propulsion beam, including propulsion beam main part and rock drill, and rock drill is slidably connected on the slide rail of propulsion beam main part by slide, further include lubricating device;Lubricating device includes mutually communicating inlet end and outlet end, inlet end is connected with the lubrication drainage of rock drill, outlet end is towards slide rail.The utility model is applied to engineering machinery field, lubricating oil liquid discharged in the operation process of rock drill is collected using lubricating device, and lubricating oil liquid is evenly dropped on slide rail when rock drill moves, not only need additional transport or store other lubricating medium, but also can stabilize lubrication slide rail of propulsion beam, ensure that propulsion beam runs smoothly, avoid the jamming caused by poor lubrication, reduce the friction between metal parts, delay the oxidation and corrosion of propulsion beam metal surface, improve equipment service life, also avoid lubricating oil liquid random discharge, reduce the pollution risk to environment, improve resource utilization.

The application discloses a kind of photovoltaic conductive paste, belongs to conductive paste technical field.The paste includes silver powder, metal silicide, nano silicon powder, glass powder, organic auxiliary agent and organic carrier, silver powder is compounded with sintered active silver powder and smooth surface silver powder, metal silicide is selected from two and above combinations in TiSi2 And NiSi2 And / or CoSi2, organic carrier contains rosin resin antioxidant component.The application is compounded by titanium and nickel / cobalt silicide, cooperates with the antioxidation protection of nano silicon powder and rosin resin, effectively reduces the contact resistance of paste and silicon wafer, inhibits interface carrier recombination, widens sintering process window.The obtained paste is suitable for screen printing, and after sintering, it is in good contact with silicon substrate, can significantly improve the photoelectric conversion efficiency of high-efficiency photovoltaic cells such as TOPCon, and the comprehensive performance is better than that of traditional conductive paste, suitable for industrial production.

The application provides a precision preformed soldering piece and a preparation method thereof. By arranging a graphene layer between the preformed soldering piece and a flux layer, the welding quality and efficiency can be improved, the energy consumption and environmental pollution in the welding process can be reduced, the welding strength and corrosion resistance can be improved, the oxidation and thermal stress in the welding process can be reduced, the cavity rate can be reduced, the precision can be improved, fullerene is added in the alloy raw material, the fullerene has high chemical stability and strong mechanical properties, can form strong bonding with rare earth metals, has high heat conduction performance, can effectively dissipate heat, avoids overheating of the welding part to cause failure, significantly reduces the cavity rate, improves the precision of the welding, reduces the welding temperature required by the preformed soldering piece, and has excellent oxidation resistance, which can effectively prevent the oxidation of the metal surface.

The utility model discloses a honey container convenient for taking honey, two long grooves for a taking assembly to move up and down are formed in a bottle cap, and one end of a taking device is movably connected with a connecting pipe; the taking device comprises a taking assembly arranged in the bottle cap and used for moving up and down, an extrusion pump used for conveniently collecting honey into the bottle body is arranged in the taking assembly, and a telescopic assembly used for driving the taking assembly to move up and down is arranged in the bottle cap. Therefore, due to the arrangement of the taking device, a user can conveniently control the taking amount of the honey, and the problem that the honey is easy to adhere and drop in a traditional taking mode is solved; due to the design of the slender pipe, the contact area between honey and air is reduced, oxidation and deterioration of the honey are delayed, and the freshness and taste of the honey are kept; the threaded connection of the bottle cap and the bottle body ensures the sealing performance of the container, effectively prevents the honey from being affected with damp and going bad, and prolongs the shelf life of the honey.

The present application relates to a kind of passion fruit explant brown prevention tissue culture medium and its tissue culture method, it is related to passion fruit tissue culture technical field.The present application provides a kind of passion fruit explant brown prevention tissue culture medium, the tissue culture medium includes the following components:MS culture medium, passion fruit juice, 6-BA, IBA, sucrose, agar.The present application is improved by culture medium, explant low-temperature treatment and explant secondary disinfection, and the pollution rate of explant, browning rate is reduced, improves the survival rate of passion fruit explant in the process of tissue culture, overcomes the shortcoming that browning mortality is high in the process of passion fruit tissue culture, improves the tissue culture efficiency of passion fruit.

The present application relates to the technical field of lubricating oil, and discloses energy-saving and wear-reducing low-volatility lubricating oil for diesel vehicles and a preparation method thereof, which comprises the following raw materials in parts by mass: poly-α-olefin copolymer 40-50 parts, benzoic acid 1.5-2 parts, alkyl alcohol amide 1-1.5 parts, dibutyl hydroxytoluene 1-1.5 parts, composite additive 2-3 parts, polymethyl methacrylate 1-2 parts, and bis(hexafluoroisopropyl) phosphate 1-2 parts. The energy-saving and wear-reducing low-volatility lubricating oil formed by mixing the poly-α-olefin copolymer, benzoic acid, alkyl alcohol amide, dibutyl hydroxytoluene, composite additive, polymethyl methacrylate and bis(hexafluoroisopropyl) phosphate has high wear-resistant lubricating performance, and the surface of the composite additive contains a copolymer of triethylene glycol divinyl ether and dodecene, so that the composite additive can be uniformly dispersed in the lubricating oil system to play the wear-resistant lubricating performance.

The application discloses a device for recycling and smelting anti-oxidation cast plate alloy, which comprises a smelting furnace with an open top, and a protective cover which is sealingly arranged at the opening of the smelting furnace. The protective cover comprises a cover body, a pressing cylinder which is arranged through the cover body, an air charging pipeline and a return cylinder which are arranged on the side wall of the pressing cylinder, and the air charging pipeline and the return cylinder are both communicated with the pressing cylinder. The smelting furnace and the protective cover are filled with inert gas through the air charging pipeline. The inert gas is filled through the air charging pipeline, and the inert gas is introduced into the upper part of the smelting furnace and the pressing cylinder, so that the part of the recycled material inlet which is in contact with air at the upper part of the smelting furnace is filled with the inert gas, the content of oxygen in the space is reduced, and the air oxidation of the alloy is effectively reduced.

This invention discloses an apparatus and method for preparing fresh Dendrobium officinale extract, belonging to the field of medicinal plant processing. It solves the problems of low extraction rate of active ingredients, loss of heat-sensitive components, short shelf life, high cost, and difficulty in industrialization in existing fresh Dendrobium officinale processing methods. The apparatus consists of a cutting machine, an automatic conveying system, a pure copper tank, a dedicated grinder, a plate centrifuge, a homogenizer, a DSI instantaneous sterilizer, and a Class 100 aseptic filling platform connected sequentially, adaptable to the entire fresh Dendrobium officinale processing flow. The method uses fresh stems of Dendrobium officinale (green-stemmed ironwood / Dendrobium huoshanense) as raw material. After pretreatment and 2-5mm slicing, the stems are ground with tap water boiled and cooled to 2-8℃ in a copper tank at a material-to-liquid ratio of 1:15-30 to break the cell walls. The mixture then undergoes solid-liquid separation, homogenization, DSI instantaneous sterilization, and aseptic filling to obtain the finished product. The total time from slicing to sterilization is ≤4 hours. This invention improves the retention and yield of active ingredients (95.5%), reduces overall costs by 21.95%, and the product has a shelf life of over 6 months at room temperature away from light. It has a bright green color, a strong gelatinous texture, and can be compounded or further processed, resulting in high market value.

This invention provides a wheel hub, a wheel assembly, and a vehicle, belonging to the field of vehicle technology. Multiple densely distributed first protrusions are provided on the inner surface of the wheel rim, forming multiple microscopic first guide grooves. These grooves create a microscopic first guide structure on the inner surface of the wheel rim. Multiple densely distributed second protrusions are provided on the end face of the wheel spokes, forming multiple microscopic second guide grooves. These grooves create a microscopic second guide structure on the end face of the wheel spokes. When water droplets adhere to the inner surface of the wheel rim or the end face of the wheel spokes, the droplets are unlikely to form a water film on the microscopic first and second guide structures. When the wheel rotates at high speed, the water droplets flow along the microscopic first or second guide grooves and gradually converge into larger droplets. These larger droplets are thrown off the wheel by the centrifugal force generated by the wheel's rotation, reducing oxidation and corrosion of the wheel hub caused by the formation of a water film.

This invention belongs to the field of electrical equipment technology, specifically relating to a dual-power automatic transfer switch contact system. It includes a housing and an operating lever movably disposed inside the housing. It also includes a standard stationary contact, a spare stationary contact, and a moving contact. The standard and spare stationary contacts are located on the same side inside the housing, and the moving contact is located between them, with the standard and spare stationary contacts positioned at opposite heights. Driven by the operating lever, the moving contact can make contact with one of the standard or spare stationary contacts. The standard and spare stationary contacts are located on the same side inside the housing, with the moving contact positioned between them. The operating lever is connected to a base via a connecting shaft, and its front end has a vertical rod fixed to the tail of the moving contact. This layout fully utilizes the internal space of the housing, reduces redundant space between components, and makes the entire contact system more compact.

The present application relates to the technical field of Dendrobium officinale, and particularly relates to Dendrobium officinale coated microparticles and a preparation method thereof. The present application separates the contact of Dendrobium officinale superfine powder with moisture and oxygen in the air through an outer coating film, reduces moisture absorption and oxidation, makes the property stable, and prevents caking, thereby solving the stability problem of Dendrobium officinale superfine powder, which is easy to absorb moisture and caking, and is easy to oxidize and reduce effectiveness. The Dendrobium officinale coated microparticles have small particle size, no grit feeling in oral administration, ensure the drug administration effect, and have good taking experience. The present application prepares Dendrobium officinale superfine powder into D 50 The present application separates the contact of Dendrobium officinale superfine powder with moisture and oxygen in the air through an outer coating film, reduces moisture absorption and oxidation, makes the property stable, and prevents caking, thereby solving the stability problem of Dendrobium officinale superfine powder, which is easy to absorb moisture and caking, and is easy to oxidize and reduce effectiveness. The Dendrobium officinale coated microparticles have small particle size, no grit feeling in oral administration, ensure the drug administration effect, and have good taking experience. The present application prepares Dendrobium officinale superfine powder into D

This invention discloses a metal thin-film capacitive vacuum gauge, comprising: a vacuum gauge body with a connector; the connector having a protection mechanism and a cleaning mechanism; the protection mechanism including: a housing, an inflation sealing assembly, a negative pressure suction assembly, an elastic reset assembly, and a stroke linkage transmission mechanism; the housing having an inflation chamber and a suction chamber; the inflation sealing assembly including a sealing airbag, an inflation piston slidably disposed in the inflation chamber, and an inflation pipe connecting the sealing airbag and the inflation chamber; the negative pressure suction assembly including a suction piston slidably disposed in the suction chamber, and an air inlet pipe connecting the inside of the connector and the suction chamber; the stroke linkage transmission mechanism connecting the inflation sealing assembly, the negative pressure suction assembly, and the elastic reset assembly; the cleaning mechanism including: a storage drive unit, a cleaning component, and a conveying unit; the cleaning mechanism and the stroke linkage transmission mechanism are linked and cooperate. This application can achieve effective protection of the connector, improve signal transmission stability and measurement accuracy, and simplify and reduce maintenance costs.

This invention belongs to the field of food processing technology and discloses a method for producing anthocyanin-enriched antioxidant jelly from black chokeberry. By weight, the raw materials include: 6.5-19.5 parts black chokeberry, 3.5-10.5 parts persimmon, 7-21 parts erythritol, 0.4-1.2 parts carrageenan, 0.4-1.2 parts konjac gum, and the remainder being drinking water. The method employs a persimmon compound astringency removal process to eliminate the astringency of the black chokeberry itself; uses erythritol, a natural sugar substitute, to replace sucrose as a sweetener, which reduces calories and avoids masking the natural flavor of anthocyanins; and utilizes a compound gum to form the jelly, combining the anthocyanins of black chokeberry with the jelly; thus developing a low-sugar, healthy, functional food to meet consumers' demand for healthy snacks.

The utility model discloses a high-conductivity high-strength copper bus, and relates to the technical field of copper buses, the high-conductivity high-strength copper bus comprises a copper bus body, and also comprises a plurality of strengthening installation mechanisms and strengthening rods, the copper bus body comprises an electrolytic copper wire body, and the outer surface of the electrolytic copper wire body is covered with a copper oxide protection layer; the reinforced mounting mechanism comprises a first mounting frame and a second mounting frame, the first mounting frame and the second mounting frame are provided with clamping grooves corresponding to each other, and mounting tables are mounted at the upper ends of the first mounting frame and the second mounting frame; according to the utility model, the oxidation of an electrolytic copper wire body can be reduced through the copper oxide protection layer, the copper bus can be supported and protected through the first mounting rack and the second mounting rack in the reinforced mounting mechanism, and a plurality of reinforced mounting mechanisms are connected through the reinforced rod, so that the copper bus is prevented from being damaged. The overall mechanical strength of the copper bus is improved, and the copper bus is not easy to break.

This utility model discloses a smart watch case with a snap-fit ​​structure, including a watch case base. A bottom shell is fixedly installed at the bottom of the watch case base. Fastening bolts are slidably connected to the four sides of the inner side of the bottom shell. Buttons are fixedly installed at the four corners of the watch case base. A transparent screen is fixedly installed in the center of the top of the watch case base. A locking block is snapped at the four corners of the top of the watch case base. A protective film is fixedly connected to the top of the four locking blocks. Through the locking blocks and the protective film, a protective film can be applied to the transparent screen, which can build a practical protective barrier for the transparent screen. It can effectively resist the scratches, bumps and wear that are unavoidable in daily use, prevent the transparent screen from leaving marks due to friction from hard objects such as keys and tabletops, and maintain the original smooth texture of the transparent screen. At the same time, the protective film can isolate the direct corrosion of stains such as sweat, oil, and dust, and reduce the oxidation, discoloration or staining of the transparent screen that is difficult to clean.

The utility model discloses a storage device for guaranteeing essential oil quality, which comprises a tank body and a tank cover, an inner container for storing essential oil is arranged in the tank body, the top of the inner container is provided with an opening, a sealing cavity is formed between the inner container and the tank body, inert gas is filled in the sealing cavity, and the tank cover is provided with a silica gel sealing plug which is tightly matched with the opening of the inner container. A shading layer formed by multiple layers of composite materials is arranged on the outer wall of the tank body, and the shading layer comprises an aluminum foil layer located on the outer layer, a fiber reinforcement layer located on the middle layer and an EVA layer located on the inner layer. According to the essential oil storage device, the sealing structure is optimized, the anti-oxidation function is added, and the shading design is adopted, so that the stable quality of essential oil in the storage process can be ensured, and the problems that the existing essential oil storage device is poor in sealing performance, poor in shading effect, easy to oxidize and the like are effectively solved.

The utility model relates to coffee bean powder grinding device technical field, concretely relates to an adjustable anti -caking coffee bean powder grinding device of grinding granularity, including the shell, the inside fixed setting of shell has the grinding inner box, the inside opening of grinding inner box has the grinding chamber, the top of grinding chamber is opened and has the movable slot. The utility model discloses the setting of one -way exhaust port, realizes the hot gas and steam that generates when grinding can smoothly pass through, avoids the condensation and leads to the lump, wherein the sealing plug and one -way exhaust port are through spring no.