32results about How to "Lower oxygen levels" patented technology

This utility model relates to the field of mung bean cake packaging technology, and more particularly to a mung bean cake packaging with a preservation function. The technical solution includes: a packaging box, the packaging box including a box bottom, side panels rotatably disposed on both the left and right sides of the box bottom, a box lid rotatably disposed on the side of the two side panels that are far apart from each other, a box body disposed on the top surface of the box bottom, a buffer layer disposed inside the box body, and a preservation box disposed inside the buffer layer, the preservation box including a second box lid and a second box body. This utility model, by incorporating a humidity regulating bag, can absorb excess moisture inside the packaging, controlling the humidity within a suitable range, preventing the mung bean cake from becoming moldy and spoiled due to dampness, and can also reduce the oxygen content inside the packaging, further inhibiting the growth of microorganisms. The packaging box and buffer layer provide good compressive strength, effectively preventing external pressure from compressing and damaging the mung bean cake inside.

This invention belongs to the field of metal purification technology and discloses a method for preparing high-purity indium with low silicon content, comprising the following steps: Step 1: Place the indium raw material into a hydrogenation furnace and evacuate to a vacuum degree of 5*10 ‑3 Pa-8*10 ‑3 Step 2: Purge with inert gas to atmospheric pressure and maintain the pressure for 30 minutes; Step 3: Replace the inert gas with hydrogen gas, turn on the heater to raise the temperature to 400-600℃, and maintain the temperature for 1-2 hours to obtain the low-silicon content high-purity indium. This invention discloses a method for preparing low-silicon content high-purity indium, which can reduce the silicon content in high-purity indium to <10 ppbw, effectively improving the performance of high-purity indium.

The application discloses a preparation method and application of aluminum nitride powder, and the preparation method comprises the following steps: S1: coating organic matter on the surface of aluminum oxide and carbonizing to obtain a carbon-coated precursor; S2: mixing and grinding the carbon-coated precursor with carbon material, and then sintering in a nitrogen atmosphere to obtain a sintered product; and S3: mixing the sintered product with a separation liquid, and separating to obtain the aluminum nitride powder; the separation liquid comprises solvent A and solvent B, the polarity of the solvent A is greater than that of the solvent B, the density of the solvent A is greater than that of the solvent B, and the polarity difference between the solvent A and the solvent B is greater than 5. The preparation method of the application can promote complete nitriding, avoid agglomeration between aluminum nitride particles, and thus prepare the aluminum nitride powder with a higher specific surface area, low oxygen content and low carbon impurity content by closely contacting the organic matter with the aluminum oxide particles and carbonizing, and then grinding and sintering with the carbon material.

The invention relates to the technical field of transformers, and discloses a power electrical transformer with a lightning protection function, the power electrical transformer comprises a transformer body, and a lightning rod is mounted in the middle of the top of the transformer body; heat dissipation assemblies used for assisting cooling are installed on the inner walls of the two sides of the transformer body, each heat dissipation assembly comprises a heat dissipation fin plate and a heat dissipation box, the heat dissipation boxes are installed on the inner walls of the two sides of the transformer body, and the heat dissipation fin plates are installed on the sides, away from the transformer body, of the heat dissipation boxes in a linear arrangement mode; a fan for dissipating heat through wind power is installed on one side of the heat dissipation box, and a cooling assembly for cooling through liquid cooling is installed in the heat dissipation box. By means of the flame-retardant assembly and the blocking assembly, the oxygen content in the transformer body can be reduced, the fire extinguishing effect is affected, arc extinguishing can be conducted through impact of sulfur hexafluoride gas on electric arcs, and it is avoided that combustion of the transformer body is aggravated due to arc discharge, and larger loss is caused.

The utility model discloses a high dietary fiber fruit and vegetable pulp homogeneity anti-oxidation stirring tank which comprises a mounting tank body, a top cover is fixed to the top of the mounting tank body through bolts, a feeding pipe is fixed to the outer side of the top cover, a first stirring mechanism is arranged in the mounting tank body, and a second stirring mechanism is arranged in the mounting tank body. The first stirring mechanism comprises a servo motor A, a driving shaft A, a stirring blade A and a supporting sliding seat, a second stirring mechanism is arranged at the bottom of the first stirring mechanism, and an inflation mechanism is arranged on the outer side of the mounting tank body. The first stirring mechanism and the second stirring mechanism form a variable-speed stirring structure, fiber integrity and dispersion uniformity of the fruit and vegetable pulp can be considered, inert gas is released into the mounting tank body through the inflation mechanism, the oxygen content in the mounting tank body can be reduced, the oxidation risk of the fruit and vegetable pulp is reduced, and the production efficiency is improved. And the damage of negative pressure to the physical state of the fruit and vegetable pulp is avoided.

The utility model relates to a kind of food processors, including: cabinet, its inside is equipped with the cooking chamber for cooking food, the upper portion of the cooking chamber is equipped with exhaust hole;Negative pressure pump, is located in the cooking chamber outside, and with the exhaust hole communication, for the gas in the cooking chamber is extracted to make cooking chamber inside to be negative pressure state;For preparing food fresh-keeping gas gas generating device;Inside with the air cavity for storing food fresh-keeping gas's gas storage device, air cavity gas inlet with the output end of the gas generating device is communicated, air cavity gas outlet is communicated to the cooking chamber by gas pipeline, and gas pipeline is equipped with for controlling gas flow's flow control valve, when flow control valve opens, the gas storage device is arranged, and food fresh-keeping gas in it can be inhaled into cooking chamber under the action of cooking chamber inside negative pressure.The utility model can reduce the risk of food material being oxidized.

This utility model provides a self-regenerative oxygen-enriched burner, belonging to the technical field of combustion equipment. The self-regenerative oxygen-enriched burner includes a combustion chamber; side plates, which are bolted to the left and right ends of the combustion chamber; L-shaped tubes, which are fixedly connected to the left and right ends of the side plates; a heat storage body, which is fixedly connected inside the two L-shaped tubes; and a support, which is fixedly connected to the lower end of the combustion chamber. A reversing valve is connected to the support, and a connecting pipe connects the reversing valve to the L-shaped tubes. In this design, the heat storage body receives and stores heat transferred from high-temperature flue gas during combustion, and then uses this heat to subsequently heat the cold air or gas entering the combustion chamber, achieving efficient heat recovery and reuse, reducing energy waste, and improving combustion energy utilization efficiency.

This utility model relates to the field of packaging equipment technology and discloses a packaging equipment for phospholipid production. It solves the problems of low automation, low packaging efficiency, and high risk of contamination associated with existing phospholipid production packaging equipment, as well as the difficulty of adapting to the high viscosity and easy oxidation characteristics of phospholipids using exposed packaging. The equipment includes a workbench with support frames fixedly installed at both ends of its bottom. A conveyor belt is fixedly installed on the top of the workbench, and a packaging box is fixedly installed in the middle of the conveyor belt. An observation window is fixedly installed on the upper front side of the packaging box, and a PLC logic controller is fixedly installed on the lower front side of the packaging box. A servo motor is fixedly installed on one side of the top of the packaging box via a support plate, and a transmission component is provided at the output end of the servo motor. This phospholipid production packaging equipment has a high degree of automation, fast packaging speed, and uses sealed vacuum packaging to avoid contamination and improve product quality.

The invention discloses a continuous rubber discharging sintering furnace and a feeding and discharging method, and relates to the technical field of metal injection molding. The continuous rubber discharging sintering furnace comprises a rubber discharging module, a sintering module and a cooling module which are connected, argon is introduced into a main air inlet, the density of the argon is larger than that of air, the argon does not react with oxygen, a working cavity is gradually filled with the argon from the lower side, meanwhile, a main exhaust port is opened, and the working cavity is cooled through the cooling module. And air in the working cavity is gradually extruded by argon to be discharged out of the working cavity, so that oxygen discharge of the working cavity is realized, and the oxygen content is reduced to the greatest extent. The feeding and discharging method is applied to the continuous rubber discharging sintering furnace, the safety of the continuous rubber discharging sintering furnace is improved, the application range of the continuous rubber discharging sintering furnace for different types of products is expanded, and the operation cost of the continuous rubber discharging sintering furnace is reduced.

This utility model relates to a fire-resistant storage device for oily waste bleaching clay, comprising a storage tank connected to the discharge pipe of at least one filter, a spraying assembly for spraying atomized water onto the oily waste bleaching clay inside the storage tank, an inflation assembly for filling the storage tank with inert gas, a detection assembly for detecting the storage environment inside the storage tank, and a controller for controlling the spraying of atomized water and the filling of inert gas. This utility model uses the detection assembly to detect the temperature, smoke, and oxygen content inside the storage tank containing the oily waste bleaching clay. Based on the detection results, nitrogen is injected into the storage tank using the inflation assembly to reduce the oxygen content. The spraying assembly sprays atomized water onto the oily waste bleaching clay inside the storage tank. These two methods work together to reduce water consumption and also reduce the risk of spontaneous combustion of the oily waste bleaching clay, thus improving storage safety.

This invention discloses a cooking appliance and its cooking control method, as well as a computer-readable storage medium. The cooking appliance includes a pot body and a heating element. The pot body forms a cooking cavity, and the heating element heats the cooking cavity. The cooking control method includes the following steps: based on the working stage of the cooking appliance, entering a deactivation stage; controlling the treatment of the cooking cavity, the treatment including at least one of heating, vacuuming, and oxygen removal; controlling the working stage of the cooking appliance to enter the cooking stage. The technical solution of this invention aims to enable the cooking appliance to undergo deactivation treatment before steaming or boiling, preventing the food to be cooked from discoloring and turning yellow after high-temperature cooking, thereby improving the cooking effect and reliability of the cooking appliance.

The application discloses a transformer for low-voltage power transmission lines and relates to the technical field of transformers, which comprises a transformer body, an auxiliary bottom box fixedly connected to the lower portion of the transformer body, a gas storage tube fixedly connected to the inside of the auxiliary bottom box, an exhaust pipeline penetrating through the upper portion of the gas storage tube, and a plugging mechanism arranged in the inside of the gas storage tube and used for plugging the inert gas stored in the inside of the gas storage tube. When the transformer body is on fire, the temperature will rapidly increase, the plugging deformation tube in the inside of the gas storage tube is softened by heat, the plugging deformation tube cannot maintain the adhered state after deformation, no longer adheres to the inner wall of the gas storage tube, the plugging of the exhaust pipeline is released, the high-pressure inert gas stored in the inside of the gas storage tube can be automatically discharged into the inside of the transformer body through the exhaust pipeline, and the open fire can be rapidly extinguished.

The application relates to the technical field of transformer coil processing, in particular to a tin soldering machine for transformer coil processing, which comprises a workbench and a shell fixedly installed on the top of the workbench, a first air cylinder is fixedly installed on the top of the shell, a spray pipe for discharging tin liquid is fixedly installed on the extending end of the first air cylinder, an anti-oxidation mechanism for preventing the spray pipe from being blocked is arranged in the shell, a conveying mechanism for conveying a coil is arranged on one side of the anti-oxidation mechanism; in the process of extending the extending end of the first air cylinder, the second shifting rod and the square rod are driven by the turnover plate to move downwards, so that the rollers provide rolling pressure on the L-shaped plate, the L-shaped plate is rotated, the output end of the spray pipe is prevented from being hindered from moving downwards, meanwhile, the pressing block provides pressure on the coil wire head located in the positioning groove, so that the coil wire head is tightly attached to the bottom of the inner wall of the positioning groove, the coil wire head is positioned, the tin soldering of the coil wire head is prevented from being uneven, and the protection efficiency on the coil wire head is prevented from being affected.

The present application relates to the technical field of negative material production, in particular to a lithium battery negative material carbonization device, which comprises a roller kiln and a replacement chamber arranged in the roller kiln, the replacement chamber comprises an inner door and an outer door, further comprising a communication piece arranged on the roller kiln, and the top and bottom of the two replacement chambers are communicated with each other through the communication piece, a gas exchange piece is arranged on the roller kiln, and the gas exchange piece is connected with the communication piece, so that the protective atmosphere in one replacement chamber can be exchanged with the gas in another replacement chamber with the inner door opened before the outer door of the one replacement chamber is opened during the operation of the device, and the oxygen content in the replacement chamber with the inner door opened can be greatly reduced through the exchange, so that the amount of protective atmosphere consumed when the gas exchange piece is used to replace the gas in the replacement chamber is significantly reduced.

The application provides a nanocellulose-based edible preservative liquid, a preparation method and a use method thereof. The nanocellulose-based edible preservative liquid comprises a nanocellulose solution, beeswax and glycerol. The preparation method comprises the following steps: mixing the nanocellulose solution, the beeswax and the glycerol according to a proportion and heating to melt the beeswax to obtain a mixed liquid; then, stirring and emulsifying the mixed liquid to obtain a nanocellulose emulsion; finally, performing vacuum defoaming treatment on the nanocellulose emulsion to obtain the nanocellulose-based edible preservative liquid. The application develops an edible and easy-to-wash preservative liquid based on nanocellulose, adopts a dipping coating mode to perform coating film treatment on fruits and vegetables, forms a micro-nano level preservative coating layer on the surface of the fruits and vegetables, can effectively reduce the loss of water and nutrients on the surface and inside of the fruits and vegetables, reduces the gas permeability of the preservative coating layer, and significantly enhances the mechanical strength of the preservative coating layer.

The invention relates to the technical field of high-low voltage power distribution cabinets, in particular to a high-low voltage power distribution cabinet with a protection structure, which comprises a cabinet body, a cabinet door is rotatably mounted on the front side surface of the cabinet body, an inner frame is fixedly connected to the front inner wall of the inner cavity of the cabinet body, the side surface of the cabinet door is in contact with the side surface of the inner frame, and a closed groove is formed in the side surface of the cabinet body. A closed groove is formed in the top of the cabinet body, the closed groove penetrates through heat dissipation holes in the side face of the cabinet body, a nitrogen discharging mechanism is installed at the top of the cabinet body, and a sealing mechanism used for sealing the heat dissipation holes is installed at the top of the cabinet body. Therefore, the air in the dead angle area in the cabinet body is stirred, the air enters the flowing air flow to be pumped away, the more uniform air pumping effect is achieved, the effect of reducing the oxygen content in the cabinet body is achieved, the fire behavior in the cabinet is inhibited or extinguished in time, and fire expansion is avoided.

This application discloses a multi-stage purification and reuse device for nitrogen-sealed VOCs, relating to the field of VOCs recovery and treatment technology. The VOCs recovery and treatment device includes multiple condensers, each comprising at least a first-stage condenser and a final-stage condenser. The tube-side inlet of the first-stage condenser is connected to the VOCs inlet, and the shell-side outlet of the first-stage condenser is connected to the purified gas outlet. The shell-side inlet of the final-stage condenser is connected to the liquid nitrogen inlet. The heat exchange tubes of the multiple condensers are sequentially connected via tube-side connecting pipelines, and the shells of the multiple condensers are also sequentially connected via shell-side connecting pipelines. This multi-stage purification and reuse device for nitrogen-sealed VOCs solves the problems of low purification efficiency and inability to reuse nitrogen in the purified gas when traditional VOCs recovery and treatment equipment is used for low-oxygen VOCs.

The utility model discloses a kind of moisture-proof antioxidant composite packaging structure for traditional Chinese medicine tea, it includes main body frame, sealing module and vacuum inflation device.Sealing module is sealed by heat-sealing assembly to realize the sealing of packaging bag, and cooling assembly is equipped to shorten packaging cycle;Vacuum inflation device replaces oxygen in packaging bag using inert gas, improves moisture-proof antioxidant performance.Transmission chain and fixed clamp ensure that packaging material is conveyed stably, multi-layer filter screen and hydrophobic coating prolong equipment life.The structure of the application is compact, reasonable in design, significantly improves packaging efficiency and reliability, and is suitable for large-scale industrial production.

The utility model relates to contact lens automation production technical field, concretely is a kind of contact lens UV light solid equipment, including feeding station, light solid host computer and discharging station, its characterized in that, gas injection and exhaust mechanism is equipped on the light solid host computer, the feeding place and the discharge of light solid host computer are all provided with airtight mechanism, the curing conveying line that does not protrude light solid host computer is provided in the light solid host computer;The starting end of the curing conveying line is located at the feeding place of light solid host computer, and the termination of curing conveying line is located at the discharge of light solid host computer;The present contact lens UV light solid equipment improves the stability of light solid host computer internal environment, reduces oxygen content, reduces oxygen inhibition effect, reduces the influence of high temperature on curing operation, improves curing quality;Realize the light solid operation of automation, reduce the proportion of manual operation, improve curing efficiency, reduce artificial cost and the quality fluctuation caused by factor, ensure the quality high consistency of contact lens product.

This invention relates to the field of NdFeB internal mixing technology and discloses a MIM NdFeB sieving internal mixer, including a mixing cabinet with a mixing chamber and a feeding chamber. An additive cylinder and an active metal cylinder are installed in the feeding chamber, and a feeding channel is provided inside the feeding chamber, located below the additive and active metal cylinders and inclined towards the mixing chamber. A vacuum feeding device is provided on one side of the mixing cabinet, and a feeding space is provided below the mixing chamber, connected to the mixing chamber. A vacuum feeding channel is provided between the vacuum feeding device and the feeding space. The mixed material is transferred to the vacuum feeding device through the vacuum feeding channel. By pre-loading the additive into the additive cylinder and adding the active metal into the active metal cylinder of the device, the sealing and continuity of the addition environment are maintained, improving the internal mixing efficiency of NdFeB permanent magnets and reducing the oxidation waste rate of NdFeB powder.

The present application relates to coal gangue disposal technical field, specifically to a kind of coal gangue layered landfill disposal method, comprising the following steps: S1, landfill site pretreatment;S2, pipeline pre-buried processing: first pre-buried pipe and second pre-buried pipe are arranged on the landfill site, one end of first pre-buried pipe is located on pre-buried site, the other end extends to pre-buried site outside, second pre-buried pipe is vertically arranged on pre-buried site and is communicated with first pre-buried pipe, and a plurality of air holes are arranged on second pre-buried pipe along the length direction;S3, layered landfill processing: coal gangue layer and loess layer are filled on the landfill site, and layered structure of coal gangue layer-loess layer-coal gangue layer is formed, the uppermost layer of layered structure is loess layer, and coal gangue layer and loess layer are both compacted;Second pre-buried pipe is provided with air hole in corresponding position of each layer of coal gangue layer;S4, anti-oxygen gas is transported into second pre-buried pipe through first pre-buried pipe.The present application can reduce the risk of spontaneous combustion of coal gangue layer.

This utility model discloses an extrusion device for magnesium alloy welding wire, relating to the field of magnesium alloy welding wire production technology. The extrusion device includes a fixed frame, inside which an extrusion cylinder is fixedly installed. A feeding mechanism for adding raw materials is installed on the front side of the extrusion cylinder, and a cooling mechanism for reducing the temperature of the welding wire and preventing spontaneous combustion is installed at the bottom of the extrusion cylinder. When the inner end of the movable block is flush with the inner wall of the extrusion cylinder, material cannot enter the inner cavity of the extrusion cylinder through the material trough. During the feeding operation, a transmission piston drives the movable block to move inward into the extrusion cylinder, so that the bottom end of the material trough is inside the extrusion cylinder and the top end is outside the extrusion cylinder. At this time, material inside the hopper can enter the extrusion cylinder through the material trough. This method can seal the part of the extrusion cylinder below the lower pressure block after material addition, thereby blocking foreign objects and reducing heat loss.

The utility model relates to the technical field of hydrocarbon vacuum cleaning machines, and discloses a steam composite tank body of an integrated hydrocarbon vacuum cleaning machine, which comprises a bottom plate, the left side of the top of the bottom plate is fixedly connected with a tank body, the right side of the top of the bottom plate is fixedly connected with a liquid storage tank, and a circulating pump is arranged between the tank body and the liquid storage tank. A water spraying pipe is fixedly connected to the middle of the inner wall of the tank body, a plurality of high-pressure nozzles are fixedly connected to the outer wall of the water spraying pipe, a plurality of heaters are fixedly connected to the bottom of the inner wall of the tank body, a backflow pipe is fixedly connected to the bottoms of the heaters, a filtering assembly is arranged on the outer wall of the backflow pipe, and the filtering assembly comprises a filtering box. According to the cleaning device, a vacuum environment is created through the vacuum pump, strong injection pre-cleaning of the high-pressure spray head and low-temperature vaporized steam cleaning of the heater are matched, cleaning liquid can deeply permeate fine structures of workpieces, and deep grease and stubborn pollutants are efficiently dissolved.

The utility model discloses a high-sealing rust-proof food can which comprises a can body, a can cover assembly is installed on the top of the can body in a threaded mode, and a covering assembly is installed on the inner wall of the can cover assembly in a threaded mode. The can cover assembly comprises a cover plate, two first shifting blocks are installed on the top of the cover plate, and a net frame, an external thread ring and a pressing ring are sequentially installed at the bottom of the cover plate from inside to outside. The drying agent bag and the modified activated carbon bag are placed in the screen frame, when the interior of the tank body is in a vacuum state, the drying agent bag and the modified activated carbon bag are placed in the screen frame, and when the interior of the tank body is in a vacuum state, the drying agent bag and the modified activated carbon bag are separated from each other, so that the drying agent bag and the modified activated carbon bag are separated from each other. The drying agent bag and the modified activated carbon bag can adsorb moisture and oxygen in the tank body, the moisture content and the oxygen content in air in the tank body can be further reduced, the interior of the food tank is in a relatively dry state, and therefore the food storage effect of the food tank is improved.

The utility model relates to the technical field of modified atmosphere packaging preservation, and discloses a handled meat modified atmosphere packaging preservation device which comprises a workbench, the right side of the top of the workbench is rotationally connected with a cover plate, the left side of the bottom of the cover plate is fixedly connected with a first heat sealing piece, and the right side of the top of the workbench is fixedly connected with a second heat sealing piece. A packaging bag is arranged in the middle of the right side of the top end of the workbench, a sealing sticker is fixedly connected to the right side of the packaging bag, an air storage tank is fixedly connected to the front end of the bottom of the inner side of the workbench, the rear side of the air storage tank communicates with a vacuum pipeline, and a vacuum pump is fixedly connected to the middle of the vacuum pipeline. According to the utility model, sealing is carried out through the sealing paste, then the packaging bag is vacuumized through the vacuum pump, fresh-keeping gas is pumped into the packaging bag through the exhaust pump after vacuumizing, and finally, the heat sealing sheet I and the heat sealing sheet II are attached to each other, so that sealing treatment is realized, the oxidation speed of the stewed meat can be slowed down, and the breeding of aerobic microorganisms can be inhibited.

The utility model provides a cable, and belongs to the technical field of fireproof cables. The cable comprises a cable core, a fireproof layer and a protective layer. The cable core comprises a plurality of insulated wire cores which are mutually twisted. The fireproof layer comprises a woven mesh belt and mixed mineral substances, the woven mesh belt wraps the peripheral side of the cable core, the woven mesh belt and the cable core define a filling space, the woven mesh belt is provided with a plurality of mesh belt holes, the mesh belt holes are communicated with the filling space, the mixed mineral substances are configured to be capable of blocking flames, and part of the mixed mineral substances are arranged in the filling space and the mesh belt holes. And the other part of the mixed mineral substance surrounds the peripheral side of the woven mesh belt. And the protective layer surrounds the peripheral side of the fireproof layer, and the protective layer is configured to be capable of tightening and protecting the fireproof layer. The fireproof performance of the cable provided by the utility model can be improved.

The utility model discloses a kind of low-power-consumption display screen wafer epitaxial monitoring protection devices, including positioning plate, epitaxial protection box is fixed on the positioning plate upside, and epitaxial protection box top is set as open, epitaxial protection box top is provided with the protection cover that open is shielded and sealed, fixed with the partition frame in epitaxial protection box, the temperature control box that is in contact with partition frame side surface is arranged in the bottom of epitaxial protection box inner chamber, and partition frame separates epitaxial protection box inner chamber into several epitaxial chambers.This low-power-consumption display screen wafer epitaxial monitoring protection device is used for the monitoring of temperature when wafer epitaxial, and temperature can be regulated according to demand, avoid temperature excessively high and lead to grain growth too fast to influence crystal quality, simultaneously prevent temperature excessively low and lead to crystal growth efficiency too low, in addition, crystal epitaxial is carried out under vacuum state, avoid dust and impurity in environment to influence crystal purity and uniformity.

The application relates to a composite current collector based on ECI, a preparation method thereof and a lithium battery. The preparation method of the composite current collector comprises the following steps: mixing a high-molecular polymer, a first flame retardant and a compatibilizer, and then performing granulation to prepare composite granules; sequentially performing melt extrusion and flow casting on the composite granules to prepare a flow casting blank film; and sequentially performing first stretching, first setting, second stretching and second setting on the prepared flow casting blank film to prepare a high-molecular base film; the direction of the first stretching is perpendicular to the direction of the second stretching, the temperature of the second stretching is higher than that of the first stretching, and the temperature of the second setting is higher than that of the first setting; a flame-retardant layer is prepared on at least one side of the high-molecular base film to obtain an intermediate; a copper layer is prepared on at least one side of the intermediate to prepare the composite current collector. The application constructs an environment-controllable ECI safety control system, improves the flame-retardant safety performance of the composite current collector, meanwhile, excellent mechanical strength and flexibility are reserved, and the thermal safety performance of the lithium battery is effectively improved.

The invention relates to a method and system for recycling waste plastics, and the method comprises the steps that S1, solid waste plastics and replacement gas enter a deoxidation device, so that the replacement gas conducts purging deoxidation treatment on the solid waste plastics, deoxidized plastics are obtained, and the deoxidation device comprises a gas stripping functional area and a diffusion functional area which communicate with each other; s2, the deoxidized plastic enters a softening-dechlorination device to be subjected to softening-dechlorination treatment, and chlorine-containing gas and softened dechlorinated plastic are obtained; s3, the softened dechlorinated plastic enters a liquefying device to be subjected to liquefying treatment, and pyrolysis gas and liquid plastic are obtained; s4, enabling the chlorine-containing gas in the step S2 and the pyrolysis gas in the step S3 to enter an alkali washing device for alkali washing treatment; and at least part of the liquid plastic in the step S3 serves as a circulating material to be heated and then returns to the liquefying device to be continuously treated. The present disclosure can significantly reduce the yield of by-products and continuously and stably provide a liquid feed for waste plastic pyrolysis.

The application discloses a method and device for dehumidifying and deoxidizing a casting mold and a use method of the device. The method comprises the following steps: step one, assembling a pouring bottom plate and each casting mold on a supporting bottom plate; step two, buckling a sealed tank body on the supporting bottom plate to form a sealed mold cavity; step three, heating the environment temperature in the sealed tank body to dry the casting mold; step four, making the relative humidity in the sealed tank body less than 10%; step five, replacing the air in the mold cavity with argon until the oxygen content at the end of the dry area of the casting mold is less than 3%; and step six, transferring the pouring bottom plate and the casting mold to a low-pressure pouring platform, and continuously feeding the argon into the mold cavity during the waiting pouring process. The application effectively overcomes the risk of explosion during the pouring and solidification of the casting, effectively prevents the generation of casting defects such as porosity and air hole, improves the delicacy of the casting, and improves the qualified rate of the casting.