103results about How to "Will not pollute" patented technology

The utility model discloses a spray type fire extinguishing demonstration system with anti-pollution and automatic recovery functions, which comprises a control cabinet, two fire extinguishing agent bottles, a gas supply header pipe, two driving gas bottles, a transparent demonstration box and a fire extinguishing agent recovery device, outlets of the electromagnetic valves of the two driving gas cylinders are connected with a first braking gas pipe and a second braking gas pipe; two demonstration grids communicated with the two gas supply branch pipes respectively are arranged in the transparent demonstration box, spray heads are arranged in the two demonstration grids, long-handle igniters are arranged below the spray heads, and temperature sensors electrically connected with the electromagnetic valves are arranged in the demonstration grids. The utility model belongs to the technical field of safety training demonstration equipment, ignition and fire extinguishing tests are carried out in the transparent demonstration box, air in a training room cannot be polluted, and a fire extinguishing agent recovery device is arranged to recycle a fire extinguishing agent.

The invention relates to the technical field of food packaging, in particular to an antibacterial fresh-keeping packaging film for food packaging and a preparation method of the antibacterial fresh-keeping packaging film, and aims at solving the problems that a traditional food packaging film is insufficient in antibacterial performance and not ideal in fresh-keeping effect. According to the preparation method, polyethylene resin and polylactic resin are taken as main raw materials, so that the packaging film is endowed with excellent mechanical property and barrier property, the oxidation process of food can be slowed down, the damage of oxygen to the food is reduced, the loss of nutritional ingredients in the food is prevented, and the freshness and nutritional ingredients of the food can be effectively kept; the modified nano-silver particles are added into the food, so that the growth and metabolic activities of microorganisms such as various bacteria and molds can be effectively inhibited, the risk that the food is polluted by the microorganisms is remarkably reduced, the deterioration of the food due to microbial decomposition is avoided, and the food quality is improved. Therefore, the quality and taste of the food are better maintained, and the shelf life of the food is prolonged.

The utility model discloses a hydrochloric acid ammonia gas corrosion test case relates to test case technical field, including test case main part, support seat, waste gas treatment tank, support seat top both sides are connected with test case main part and waste gas treatment tank respectively. The utility model discloses a ammonia gas injection pipe and hydrochloric acid injection pipe inject proper amount of ammonia gas and hydrochloric acid gas into test case main part, wherein the hydrochloric acid conduit and ammonia gas exhaust pipe correspondingly connected of ammonia gas injection pipe and hydrochloric acid injection pipe are upside down distribution in test case main part, are favorable to the full mixing of hydrochloric acid gas and the ammonia gas below, form even corrosive gas environment, this can ensure that the corrosion effect that each part in test case receives is more consistent, thereby obtains accurate test result, wherein the test case main part inner wall has been daubed anticorrosive layer coating), can effectively prevent the corrosion of hydrochloric acid and ammonia gas to test case main part inner wall.

The present invention discloses a large vehicle anti-collision device, which relates to the field of vehicle protection, including an anti-collision seat, a buffer box and an anti-collision frame; the buffer box includes an anti-collision plate, a bearing tube and a sliding plate; a partition is provided in the middle of the bearing tube, the right side of the partition is connected to the sliding plate, the upper side of the partition is a cavity, and the lower side of the partition is a water cavity; a water pipe is fixed on the sliding plate; a plurality of positioning grooves are provided on the anti-collision seat, and a positioning rod is fixed horizontally in the positioning groove; an anti-collision strip is provided on the left side of the positioning rod; a limiting ring is provided in the middle of the outer peripheral side of the bearing tube, and a plurality of first springs are provided on the right end face of the limiting ring; a telescopic mechanism is provided on the right end face of the bearing tube. The anti-collision performance of the device is improved by providing the anti-collision seat, the buffer box and the anti-collision frame; the energy generated by the collision can be absorbed by providing the water cavity, the water pipe and the positioning rod; the first spring and the telescopic mechanism are used to buffer the impact force on the anti-collision seat and the buffer box, and the limiting ring is used to limit the buffer box when it is reset after the collision.

The utility model discloses a nitric acid preparation device for simulating an early atmospheric photochemical reaction of the earth. The nitric acid preparation device comprises an ultraviolet photochemical reaction system, a reaction gas source feeding system, a water vapor generator and a nitric acid freezing collector, the ultraviolet photochemical reaction system comprises an ultraviolet light source and a reaction chamber, and the ultraviolet light source is used for providing ultraviolet light required by reaction into the reaction chamber; the reaction gas source supply system is communicated with the reaction chamber and is used for supplying gas required for generating nitric acid through ultraviolet light chemical reaction into the reaction chamber; the water vapor generator is used for providing water vapor for the reaction chamber; the water vapor generator is connected with the reaction chamber; the nitric acid freezing collector is connected with the reaction chamber and is used for collecting nitric acid generated by photochemical reaction in the reaction chamber. The utility model realizes the preparation of nitric acid by simulating the early atmospheric photochemical reaction of the earth.

The utility model provides a waterproof and drop-resistant express bag convenient for secondary use. The waterproof and drop-resistant express bag comprises a paper bag body with a bag opening and a tongue opening used for sealing the bag opening, folding handles which can be movably turned out of a bag opening are arranged on the two sides in the paper bag body; the section of the paper bag body sequentially comprises a first functional layer, a paper base material layer and a second functional layer from inside to outside, and the second functional layer is a waterproof layer. The express bag has the advantages that the paper base material layer is matched with the second functional layer, so that the waterproof and anti-falling performance of the express bag can be effectively improved, and the express bag is not prone to being abraded and damaged in the transportation process or in cloudy and rainy days; and meanwhile, after the bag opening is opened to take out the express, the folding handle can be turned out of the bag opening to form a hand bag, so that secondary use of the express bag can be well realized, and resource waste is avoided.

The invention belongs to the technical field of chip testing, and particularly discloses a chip testing notch, a chip testing device and a chip testing system, and the chip testing notch, the chip testing device and the chip testing system are used for allowing a chip testing clamp to be inserted to test a chip. The test plate is arranged above the heating plate, a test station for accommodating the chip test clamp is formed between the test plate and the heating plate, and at least one reed is arranged at the position, opposite to the test station, of the test plate; wherein when the chip test fixture is placed at the test station, the reed is elastically crimped on a test contact on the upper surface of the chip test fixture. The chip test fixture can solve the problem that the probe is easy to damage when the current chip test fixture is plugged in and pulled out of the drawer, and is suitable for automatic aging test, so that the aging test efficiency is improved, and the safety and reliability of the test process are guaranteed.

The invention discloses a production method of a variable multicolor carbon dioxide concentration indicator, and belongs to the field of carbon dioxide detection.The production method comprises the steps that carbon dioxide with the purity of 95% is introduced and stirred, the initial reaction performance of the carbon dioxide indicator is improved, and a composite indicator is added to improve the color changing interval; the added sodium chloride is beneficial to improving the color changing effect under the low-temperature condition, the added glycerol is beneficial to improving the high-temperature use performance, reducing volatilization and improving the stability, and after being packaged in a high-breathability and high-strength packaging material, an effective color changing effect can be achieved, deliquescence and influence or pollution to surrounding products are not prone to occurring, the excellent color changing effect can be achieved under the low-temperature condition, and the service life of the product is prolonged. The carbon dioxide indicator is blue under the carbon dioxide concentration of 0-10%, purple under the carbon dioxide concentration of 10%-20%, green under the carbon dioxide concentration of 20%-50%, yellow under the carbon dioxide concentration of 50%-90% and red under the carbon dioxide concentration of 90%-100%, and has more excellent utilization value and economic value.

The present application relates to the technical field of fertilizer, in particular to an organic leaf fertilizer and a production method thereof.The present application solves the problems of poor fertilizer efficiency and easy damage to soil structure.The present application improves the soil organic matter content of the organic leaf fertilizer by changing the dosage of kelp, the temperature and time of ultrasonic and the dosage of kelp extract; improves the relative content of plant chlorophyll of the organic leaf fertilizer by changing the dosage of earthworms, trypsin and amino acid extract; improves the soil porosity of the organic leaf fertilizer and reduces the soil bulk density by changing the dosage of shrimp shells, the temperature of removing protein and the dosage of chitosan extract; increases the plant leaf thickness of the organic leaf fertilizer by changing the dosage of straw and the dosage of cellulose extract; and improves the fertilizer utilization rate of the organic leaf fertilizer by changing the temperature and time of stirring and the time of emulsification and grinding.

The invention relates to the field of interior wall putty, and particularly discloses flame-retardant environment-friendly interior wall putty. The adhesive is prepared from the following raw materials in parts by mass: 10 to 20 parts of oxidized starch, 10 to 20 parts of guar gum, 10 to 15 parts of special adhesive powder for putty, 5 to 7 parts of carboxyl-terminated hyperbranched polyester, 1 to 3 parts of chitosan, 3 to 5 parts of graphene oxide, 3 to 5 parts of hydroxypropyl methyl cellulose ether, 3 to 5 parts of starch, 1 to 3 parts of sodium stearate, 1 to 3 parts of sodium hexametaphosphate, 1 to 3 parts of water glass, 1 to 3 parts of borate and 1 to 3 parts of nano antimony trioxide. 1-5 parts of coarse whiting, 1-3 parts of acetic acid aqueous solution with the mass fraction of 8-12%, 1-3 parts of ethanol, 1-3 parts of glycerol and 0.1-0.3 part of preservative. The invention also discloses a preparation method of the flame-retardant environment-friendly interior wall putty. The natural material guar gum is adopted and has a synergistic effect with various materials, so that the stability and flame retardance of a system are effectively enhanced.

This invention relates to the fields of optical fiber communication networks, digital information transmission, optical fiber broadband operation services, next-generation information networks, network resource management, IoT sensing, and industrial internet operation and maintenance technologies, and particularly to an intelligent management method and system for optical fiber communication cabling. The method establishes a formal cabling resource model, a shadow cabling buffer, and a conflict sampling strategy table. After a change in the plugging status of an optical fiber cabling port, it collects port status data, jumper end identification data, optical link quality data, and service resource constraint data to generate an initial cabling evidence set and establish a shadow cabling relationship. When the identification, link, time, and resource evidence are inconsistent, an evidence conflict type is generated. Secondary verification data is collected according to the corresponding secondary sampling path, and the credibility level is reconstructed to generate a credible cabling result, a cabling result pending verification, or a conflict cabling result. These results are then written into the formal cabling resource model or the corresponding status is frozen to improve the accuracy of optical fiber cabling resource management.

The utility model belongs to solid waste base cementitious material processing technical field, specifically disclose a kind of solid waste base cementitious material powder grinding device, including bottom plate, the bottom plate upper end one side is connected with first support plate, first support plate one side upper portion is connected with feed pipe, feed pipe one end is extended to first support plate one side, first support plate is opened with rolling mouth at the place corresponding feed pipe, feed pipe is located inside rotation of rolling mouth, the outer wall one side of feed pipe is connected with stabilizing plate, stabilizing plate one side is connected with outer tube, the utility model is structured design by double layer powder grinding, strong magnetic iron removal, convenient cleaning etc., realize that powder grinding efficiency and quality promotion, iron impurity efficient removal, maintenance convenient and cost reduction, and structure stable adaptability is strong.

The invention relates to the technical field of construction engineering foundation treatment, in particular to a foundation structure based on a high-saturation brine crystallization technology and a construction method of the foundation structure. The foundation structure comprises a basic primary salt rock bearing layer, a bottom framework cementing layer and a surface sand gravel compensation layer. As the magmatic rocks are very hard, high in density and enough in salt lake chemical environment resistance, the magmatic rocks are directly put into a hypersalinity brine area to form a rigid framework, framework building-in, gap filling and overall cementing are achieved through natural crystallization of salt lake hypersalinity brine, and a core rigid framework of the foundation is formed; the structure can be connected with a primary salt rock bearing layer of a lower foundation to form a stress transmission system, can resist soaking erosion caused by conventional fluctuation of the brine water level, has anti-floating and anti-seepage dual performance, can improve the foundation bearing capacity and the anti-settling capacity, and enables a building newly built on a salt lake to be more stable. Meanwhile, the magmatic rocks are natural materials, so that the salt lake environment is not polluted, and the environmental protection property is good.

The invention relates to the technical field of agricultural instruments, and discloses a rice threshing device convenient to clean, which comprises a frame body, a threshing bin arranged on the frame body and a storage box arranged below the threshing bin, the threshing bin comprises a box body, a bin cover is movably arranged on the box body, a feeding port is formed in the front wall of the box body, and a waste outlet is formed in the rear wall of the box body. A screen is arranged at the bottom of the box body; a roller is movably arranged in the box body, and a rotating wheel connected with the roller is arranged on the outer side of the box body; a gasoline rotating device is arranged on the side face of the box body and connected with the rotating wheel. The roller comprises a rotating shaft connected with the rotating wheel, the two ends of the rotating shaft are arranged on the box body, at least two round covers are arranged on the rotating shaft, at least two connecting rods are arranged on the round covers in a penetrating mode, and a plurality of protruding teeth are arranged on the connecting rods. Through holes are symmetrically formed in the tops of the side walls of the storage box. The device not only improves the threshing efficiency of rice and reduces the complexity of manual operation, but also makes an important contribution to the guarantee of seed purity.

The utility model discloses a sealant storage device which comprises a storage box. A discharging screw rod is arranged in the middle of the storage box, an inner sealing groove is fixedly connected to the middle of the bottom surface of the storage box, and a discharging opening is fixedly connected to the lower end of the inner sealing groove; wherein the middle of the limiting groove is slidably connected with a lifting rod, the bottom of the lifting rod is fixedly connected with an inner sealing plug, the middle of the inner sealing plug is provided with a positioning block, the top end of the lifting rod is rotatably connected with a first connecting seat, and the middle of the first connecting seat is in threaded connection with an opening and closing screw rod; wherein a sliding rod is slidably connected to the middle of the lifting rod, an outer sealing plug is fixedly connected to the bottom of the sliding rod, a guide rod is slidably connected to one side of the lower end of the sliding rod, and a guide block is slidably connected to one side of the guide rod. The residue of the sealant at the discharge hole is conveniently reduced, and the secondary sealing effect is achieved.

This utility model relates to the field of duckweed containment technology in waterways, and discloses a containment rope float suitable for fish spawning. It includes a containment rope made of first bundled reed stalks, with several reed balls made of second bundled reed stalks evenly distributed on the containment rope; each reed ball is filled with palm leaves; both ends of the containment rope are secured with ropes, and the other end of each rope is secured with a ground stake inserted into the riverbank. The advantages of this utility model compared to existing technologies are: it can contain duckweed on the water surface; the containment device decomposes quickly after disposal, does not pollute the environment, and provides a breeding environment for fish.

The application discloses a raw material mixing device for photoresist production and processing, which can not introduce pollution sources, ensure that the last batch of residues do not affect the precision of the next batch, and ensure that the raw materials can be fully mixed and dissolved without causing the molecular chain of the raw materials to break. The application adopts a mixing main pipe with a two-dimensional / three-dimensional wave-shaped mixing and dissolving section. Upstream connecting liquid inlet pipes and slurry inlet pipes are respectively connected with quantitative liquid raw materials and solid slurry. The mixing and dissolving section uniformly distributes multiple uniform mixing lifting units, including a dome-shaped protruding part, a stud in line with the protruding part, a reset elastic element and a locking mechanism. In the mixing stage, the stud is locked, and the protruding part is tightly attached to the inner wall of the main pipe. In the cleaning stage, the locking is released, the liquid flow impacts the spiral protruding ribs to drive the protruding part to rotate and axially displace, the reset elastic element accumulates potential energy, and the liquid flow stops and reverses back to the original position.

The utility model relates to medical appliance technical field, specifically disclose a kind of gastric tube nasal feeding medicine dissolving device, including base, and the positioning seat is equipped in base upside, and the vertical groove is equipped in positioning seat, and cup body is positioned and placed in groove, and the detachable cover is fixed in cup body top, and the vertical pipe is vertically installed in cover, and the suction pump mechanism matched with vertical pipe is equipped in base side edge, and the automatic stirring mechanism and heating insulation mechanism matched with cup body are equipped in positioning seat, and the medicine adding mechanism is equipped in cover. The utility model can realize the mixing operation of high efficiency, effectively improve the dissolving efficiency of gastric tube nasal feeding medicine, effectively avoid liquid medicine long time exposure in air at the same time, ensure treatment effect and medicine safety.

The utility model discloses a collecting device, which relates to the technical field of sampling devices, and comprises a fluid director body, a liquid channel is arranged in the fluid director body, and the liquid channel comprises a liquid inlet channel and a liquid outlet channel; the fluid director body comprises a baffle plate arranged in the liquid channel, and at least one side of the baffle plate is provided with an overflowing channel; the fluid director body further comprises a fluid guide pipe arranged at the bottom of the fluid channel. A fluid inlet of the fluid guide pipe is located in the side, close to a fluid inlet of the fluid channel, of the baffle. When the urinal is used and the liquid level of liquid in the flow guide pipe reaches the top end of the flow guide pipe, urine does not enter the flow guide pipe and enters the liquid outlet channel from the flow passing channel on the side edge of the baffle until being discharged, so that the urine discharging process of a user is not interrupted, and when the urinal is used, the liquid outlet of the liquid channel is aligned to the urinal, so that the urine is directly discharged into the urinal, and the urine discharging efficiency is improved. Urine cannot be splashed, the environment cannot be polluted, cleanliness and sanitation are achieved, and the use experience of a user is good.

The application provides an animal tissue sampling device and belongs to the technical field of cell culture. The technical scheme is as follows: a base and a sampling mechanism arranged on the base, the base is provided with an operation sleeve through a pair of inverted L-shaped supporting rods, the sampling mechanism is movably arranged in the operation sleeve, the sampling mechanism comprises a fixing frame movably arranged in the operation sleeve, the fixing frame is provided with an outer sampling sleeve, the fixing frame comprises a U-shaped handle, the U-shaped handle is respectively provided with a first fixing cylinder and a second fixing cylinder at both ends, and the outer sampling sleeve is arranged between the first fixing cylinder and the second fixing cylinder. The application has the advantages of simple structure, convenient use, fast sampling, great guarantee of sample pollution, and improved efficiency and quality of scientific research.

This invention discloses a machine vision-based weld defect detection device for mechanical manufacturing welded parts, including a worktable, a camera mounted on a support, an image processing device mounted on the front of the top of the worktable, a cleaning mechanism mounted on a U-shaped frame, a water tank mounted on the top surface of the U-shaped frame with a mixing mechanism inside, a cleaning mechanism mounted on a second U-shaped frame, a fixing mechanism on the top surface of a second connecting rod, a connecting block fixed to the bottom of the second connecting rod, a servo motor mounted on the side of the worktable, and a drive mechanism mounted on the output shaft of the servo motor. This invention utilizes the coordinated use of adjusting component one, adjusting component two, the drive mechanism, the cleaning mechanism, and the tilting mechanism to first bring the welded part into contact with the grinding block, facilitating the removal of residual weld slag, spatter, and oxide scale from the weld seam. This prevents residual weld slag, spatter, and oxide scale from obscuring weld defects and improves the accuracy of weld seam detection.

According to the wet preparation method for the ground glass fibers and the double-roller type crushing device, the surfaces of the pressing rollers in the used double-roller type crushing device are made of ceramic materials, the situation that metal friction chippings pollute the ground glass fibers is avoided, the circumferential surface of one pressing roller in the double-roller type crushing device is a tooth surface, cutting teeth are formed, and the grinding efficiency is improved. The cutting effect of the contact surface on the fibers is improved, the grinding effect of the contact surface on the fibers is reduced, shape damage to the fibers in the crushing process is reduced, and the crushing efficiency and the product quality can be improved. The vibrating screen classifier is internally provided with three layers of screen plates and is provided with the spraying mechanism, so that one-time grading screening of materials is achieved, and ground glass fiber materials are separated under the dual effects of washing of sprayed water flow and the vibrating screen. According to the method, continuous production can be achieved, the process is simple and practical, the length specification and the product quality of the ground glass fiber product are easy to control, and pollution and health hazards to the environment and workers caused by ground fiber dust are reduced.

This invention discloses a Litsea cubeba essential oil preparation, which is prepared by mixing a 1% (w / w) chitosan quaternary ammonium salt solution with a Litsea cubeba essential oil ethanol mixture at a volume ratio of 4:1; the volume ratio of Litsea cubeba essential oil to anhydrous ethanol in the Litsea cubeba essential oil ethanol mixture is 2:3. The Litsea cubeba essential oil preparation prepared by this invention exhibits good dispersibility and stability, achieving 100% short-term and long-term antibacterial effect against Aspergillus flavus. This is significantly superior to using Litsea cubeba essential oil or chitosan quaternary ammonium salt alone, as well as other chitosan quaternary ammonium salt-Litsea cubeba essential oil preparations, and even more superior to commonly available antifungal agents. Its preparation method is simple, non-toxic, harmless, and does not pollute the environment. It has low production costs and can be used to prevent or inhibit the growth of Aspergillus flavus, reducing its damage to wooden household products.

The application provides a cation exchange membrane and a preparation method and application thereof, and belongs to the technical field of cation exchange membranes.The method provided by the application is free of volatile organic compounds, toxic and harmful monomers or heavy metal components, and the raw material itself is environmentally friendly.The method is free of harmful gas emission and hazardous waste generation, and is environmentally friendly.The cation exchange membrane material prepared by the method is chemically stable, easy to recycle after being discarded, free of additive precipitation during use, and free of pollution to the treatment system.The water-soluble dispersion bonding medium adopted by the application forms rich and uniform connected pore structures in the cation exchange membrane after being washed by water, greatly reduces ion migration resistance, significantly alleviates membrane polarization, and improves ion exchange rate and energy utilization efficiency when used for separation.The method provided by the application is free of complex chemical reactions, harsh process conditions, and standardized operation steps, and is easy to realize large-scale continuous production.

The invention belongs to the field of traditional Chinese medicine preparations, and particularly relates to a traditional Chinese medicine external preparation for dispelling wind and arresting itching and application thereof. The traditional Chinese medicine external preparation is prepared from the following raw materials: 10-30 parts of fried fructus xanthii, 10-30 parts of fructus kochiae, 10-30 parts of rhizoma chuanxiong, 10-30 parts of flos carthami and 5-15 parts of solanum lyratum thunb. The raw materials are subjected to process extraction and refining to obtain the traditional Chinese medicine external preparation. A plurality of processes are researched, and research results show that the itching relieving and detumescence effects of the transdermal drug delivery preparation are obviously superior to those of original oral granules, and the effect is better than that of dermatitis treatment cream sold in the market. According to the traditional Chinese medicine external preparation disclosed by the invention, the anti-inflammatory, detumescence and itching-relieving drug effects are improved, oral administration is changed into external administration, the administration is more direct, the safety is higher, the drug effects are better, the crude drug amount is smaller, and the cost is lower.

The utility model provides a preheating type multi-layer continuous compound machine which comprises a base, a plurality of compound units are sequentially stacked at the upper end of the base, each compound unit comprises a frame, a heating roller and a pressing roller are arranged in each frame and are arranged up and down, a fire grate is arranged at one end of each heating roller, and a plurality of fire grate bodies are arranged at the other end of each heating roller. A heating roller is arranged on one side of the pressing roller, a fire row is arranged on the other side of the pressing roller and extends into the heating roller, a preheating roller is arranged on one side of the heating roller, a third guide roller is arranged below the preheating roller, and a first guide roller and a second guide roller are arranged on one side of the preheating roller up and down. One end of the heating roller is fixedly connected with a second gear, the first gear and the second gear are meshed with each other, and the first gear and the second gear which are adjacent in the stacked composite units are meshed with each other. According to the invention, a plurality of compounding units can be stacked, so that the compounding of a plurality of layers of fabrics is met.

This invention relates to a vacuum preloading device and method for reinforcing soft soil foundations using a floating raft cushion. The reinforcement device includes a sealing wall surrounding the soft soil foundation, with a floating raft cushion covering the soft soil foundation within the sealing wall. A drainage board is installed below the floating raft cushion, vertically inserted into the soft soil foundation with its upper end penetrating into the floating raft cushion. A vacuum sealing membrane covers the floating raft cushion, and a vacuum loading system is connected to the outside of the floating raft cushion. The vacuum loading system generates a vacuum negative pressure within the floating raft cushion to draw water from the soft soil foundation through the drainage board. This reinforcement device can be used on general soft soil foundations, extremely soft soil foundations, and suspended silt foundations. The construction process does not require the accumulation of large amounts of sand cushion layers, and reinforcement can be completed without multiple treatments, saving a significant amount of sand resources. It provides good preloading effect, a short construction cycle, and high efficiency. Furthermore, the floating raft cushion can be reused without damaging or polluting the environment, thus reducing construction costs and effectively protecting the environment.

This invention discloses a method for preparing a flame-retardant epoxy resin containing a recyclable flame retardant and its application. The method for preparing the flame retardant includes: preparing a manganese cobalt oxide flame retardant through the co-precipitation of manganese and cobalt ions followed by calcination. This invention synthesizes a manganese cobalt oxide flame retardant via a co-precipitation method and uses it as a filler in epoxy resin, curing it to obtain a green, halogen-free, environmentally friendly flame-retardant epoxy resin. It does not pollute the environment during pyrolysis or combustion and can effectively catalyze the conversion of harmful gases generated during combustion, which is beneficial to environmental protection and sustainable development. It has excellent flame-retardant properties, greatly reducing the release of heat, smoke, and harmful gases during epoxy resin combustion, significantly enhancing its fire safety. Furthermore, it enables efficient recovery of the flame retardant from the epoxy resin, with a recovery rate of up to 90.0%, achieving high-quality resource utilization.

The present invention relates to a device for oil well logging, and in particular to a multi-core faucet. The device comprises a connecting screw, and the two ends of the connecting screw are respectively designed with a positive thread and a negative thread, the upper end of the connecting screw is threadedly connected to the lower end of the upper joint, the lower end of the connecting screw is threadedly connected to the upper end of the external hexagonal connecting rod, the lower end of the external hexagonal connecting rod is connected to a tension rod, and the lower end of the tension rod is connected to the upper end joint of the main body. The present invention realizes that when replacing the tension rod, there is no need to disassemble the through-line, which is convenient for repair and maintenance, extends the length of the salvage shell, and improves the success rate of salvage. The thread at the connection between the salvage shell and the main body is protected by a sealing ring, mud cannot enter, and it is convenient to disassemble. The oil filling hole is designed to facilitate oiling the instrument and reduce pollution.

This utility model discloses a surgical support frame with easy height adjustment, including a vertical tube, a base fixed to the bottom end of the vertical tube, a lifting rod inserted inside the vertical tube, a piston fixed to the bottom end of the lifting rod, a support plate set at the top end of the lifting rod, an air-blowing assembly fixed inside the base, and an exhaust assembly set on one outer wall of the base. The air-blowing assembly includes a cylinder embedded inside the base, a piston set inside the cylinder, and a pressing column fixed to the top end of the piston. This utility model uses the air-blowing assembly to inflate the vertical tube, thereby causing the piston to raise the vertical rod and the support plate at its top. The exhaust assembly can expel the air inside the vertical tube, causing the support plate to lower. This allows medical staff to adjust the height of the support plate with their feet, eliminating the need for hand adjustment and preventing hand contamination during the adjustment process, thus achieving a more convenient height adjustment of the support frame.