42results about How to "Reduce frequent replacement" patented technology

The preparation method comprises the following steps: firstly, respectively preparing a propolis extracting solution, a polyvinyl alcohol solution and a chitosan solution, then uniformly mixing the polyvinyl alcohol solution and the chitosan solution, then adding the propolis extracting solution to obtain a mixed solution, and finally, filtering the mixed solution, standing at low temperature, compounding at ultrahigh pressure, and cooling to obtain the temperature-sensitive propolis gel solution. And carrying out gelation on the propolis gel solution, so as to obtain the temperature-sensitive propolis gel solution. The temperature-sensitive propolis gel solution prepared by the method can be subjected to phase change at the body temperature of a human body, a sol state is converted into a gel state, controlled release of active ingredients of propolis is completed according to the change of a pH value, and a higher drug concentration is directionally provided in a bacterial infection area for a long time. And the chitosan / polyvinyl alcohol composite carrier has excellent properties such as strong antibacterial ability and good stability, and can generate a synergistic effect after being combined with the propolis, thereby effectively enhancing the antibacterial effect of the whole thermo-sensitive propolis gel solution and improving the physical properties of the propolis.

The utility model discloses a light guide support assembly of an automobile rear lighting lamp, and belongs to the technical field of automobile rear lighting lamps. The two tail lamp fixing frames are fixedly connected to the left side and the right side of the tail lamp connecting frame. Penetrating holes are formed in the positions, close to the tail lamp connecting frame, of the two frame fixing frames and used for penetrating through the tail lamp fixing frames on the two sides of the tail lamp connecting frame correspondingly; the two limiting assemblies are used for fixing the connecting position of the tail lamp fixing frame set and the penetrating hole. The two protective covers are movably connected to the front surface of the tail lamp fixing frame set, brackets are arranged in the two protective covers, and sliding grooves used for adjusting the positions of the brackets are formed in the surfaces of the two sides of the two protective covers. And the two vehicle lamps are positioned in the protective cover. The utility model solves the problems that the tail lamp is damaged by soil and stones on the road surface in the running process of the existing vehicle, no better protection measures are provided for protection at present, and potential safety hazards are caused to the running process, and the vehicle lamp is protected by the protection plate and the mud baffle of the protection cover, so that the safety of the vehicle is improved. The surface damage is reduced; and the replacement frequency and the use cost of the automobile lamp are reduced.

The invention belongs to the technical field of functional polymer materials and photocatalysis, and particularly relates to a preparation method and application of an antibacterial coating based on polyvinyl chloride plastics. Comprising the following steps: S1, pretreatment; s2, carrying out a reaction; s3, post-processing is carried out; s4, compounding with polyelectrolyte; and S5, preparing the coating. Through a specific catalytic cracking process, the waste PVC is converted into a functional photocatalytic antibacterial coating material, so that resource utilization and functional utilization of the waste chlorine-containing plastic are realized; a catalytic cracking process under a solvent-free condition is adopted, so that the use of an organic solvent is avoided; the coating material has relatively good photochemical stability, and can realize a relatively lasting antibacterial effect; the method has relatively low requirements on equipment, reaction conditions are easy to control, and the method is not only suitable for laboratory research, but also convenient for engineering and industrial amplification. And by combining the processing performance of the obtained coating, the technology has popularization and application potential.

The invention discloses a durable composite steel wire rope material and a preparation method thereof. The preparation method comprises the following steps: step 1, preparing a steel wire; step 2, surface pretreatment; step 3, preparing a corrosion-resistant coating; step 4, adding wear-resistant particles; step 5, curing treatment; step 6, quality detection; the method has the advantages that a special formula and a preparation process are adopted, so that the steel wire rope can effectively resist the influence of factors such as abrasion, fatigue and corrosion in the long-term use process, the service life of the steel wire rope is greatly prolonged, safe operation of equipment and engineering can be ensured, and the service life of the steel wire rope is prolonged. Good toughness can also reduce local damage caused by accidental impact, the reliability of the steel wire rope is improved, the production process is easy to control, the production cost is reduced, the production efficiency is improved, environment-friendly raw materials and processes are adopted, pollution to the environment is reduced, the market competitiveness of products can be improved, and the steel wire rope is worthy of popularization and application. And reliable product guarantee is provided for users.

The utility model belongs to the technical field of pet water dispensers, and particularly relates to an efficient filtering structure and a pet water dispenser. According to the efficient filtering structure disclosed by the utility model, the overflow basin is provided with the overflow groove, the precipitation structure and the filtering groove are arranged from the overflow groove along the outer side direction, the precipitation structure comprises the overflow convex edges with the gradually increased heights, and the precipitation grooves are formed between the adjacent overflow convex edges, so that liquid water needing to be filtered enters the overflow groove; particle impurities sequentially flow to the precipitation tank and the filtering module in an overflowing manner, so that the particle impurities are effectively precipitated in the precipitation tank, the particle impurities are prevented from being accumulated in the filtering module to cause blockage of the filtering module and influence on normal filtering effect, the service life of the filtering module is effectively prolonged, and the operation of frequently replacing the filtering module is reduced.

This application discloses a corner protector clip device. The corner protector clip device includes a first fixed baffle, a second fixed baffle, a third fixed baffle, and a movable door panel. The first, second, and third fixed baffles are sequentially connected to form a groove-like structure. The movable door panel is rotatably connected to either the first or third fixed baffle, and can cooperate with either the third or first fixed baffle to close the groove-like structure. This application is used for loading corner protectors. The inner wall of the corner protector clip device is smooth, allowing the corner protectors to move smoothly within the device, reducing or avoiding jamming, and greatly improving worker efficiency. The time required to add corner protectors per cycle is reduced from 5 minutes in traditional technology to less than 3 minutes. The device is smooth, suitable for various corner protector brands, and significantly improves operational safety and convenience.

The invention relates to the technical field of rock tunneling, and provides a full-section rock tunneling robot and an operation method thereof. Comprising a walking mechanism, an up-down moving system, a left-right moving system, a rock drilling and breaking system and the like. The walking mechanism comprises a crawler belt, driving wheels and hydraulic telescopic supporting legs. The rotating platform mechanism is installed on the walking mechanism, and the full-section operation mechanism is movably installed on the rotating platform mechanism. The up-down moving system is used for realizing lifting of the rock drilling and breaking system; the left-right moving system is used for realizing left-right movement of the rock drilling and breaking system; the rock drilling and breaking system comprises a mechanical long arm, a mechanical short arm and rock breaking equipment; the rock breaking equipment is integrated with the identification system, communicates with the control system through a wireless signal, and carries out tensile shear rock breaking by utilizing rock properties; the control system integrates a rock breaking position automation module, a communication module and a guide rail position adjusting module. According to the invention, the robot can carry out all-directional, dead-corner-free and interference-free full-section continuous tunneling in a roadway with a section in any shape.

This application discloses a grey water reuse treatment device, including a filtration mechanism, a reuse water tank, and a waste tank. The upper end of the filtration mechanism has a grey water zone A, which is connected to the drain outlet of a washbasin via an inlet pipe. The middle part of the filtration mechanism has a clean water zone B, which is connected to the reuse water tank via a filter suction pipe and a backwash suction pipe. The end of the filtration mechanism has a wastewater discharge zone C, which is connected to the waste tank via a wastewater discharge pipe. The grey water reuse treatment device provided by this application can effectively improve the service life of the filter by backwashing, eliminating the need for frequent filter element replacements and reducing maintenance costs. Simultaneously, the addition of a bactericide inhibits the growth of microorganisms.

The invention discloses a method for prolonging the service cycle of a high-temperature section heat accumulator of a double-heat-accumulating type heating furnace, and belongs to the technical field of steel rolling heating furnaces. The size of the baffle brick is set to be 440 mm * 200 mm * 120 mm; the first heating temperature is set to be 1000-1050 DEG C, and the second heating temperature is set to be 1150-1200 DEG C; the temperature of a high-temperature section hearth is set to be 1250-1280 DEG C; the range of the exhaust gas temperature is controlled to be 120-160 DEG C; the gas pressure is controlled to be 8 kPa to 9 kPa; the problem of how to prolong the service life of the high-temperature section heat accumulator in the double-heat-accumulating type heating furnace is solved; the control method is improved in multiple aspects, the performance of the heating furnace is greatly improved, the service life of the heating furnace is greatly prolonged, loss of the heat accumulator is reduced, and therefore the service cycle of the heat accumulator in the high-temperature section is prolonged.

The invention discloses a solid corrosion inhibition, scale inhibition and paraffin inhibition integrated agent and a preparation method thereof, and belongs to the technical field of oilfield chemistry. The preparation method comprises the following steps: carrying out acylation reaction by taking polyacrylic acid and hydroxyethyl ethylenediamine as raw materials to generate an acylated product; carrying out cyclization reaction on the acylated product to generate an imidazoline compound; the preparation method comprises the following steps: carrying out esterification reaction on an imidazoline compound and benzoic acid in the presence of a catalyst to prepare an intermediate product; the preparation method comprises the following steps: reacting epoxy chloropropane and sodium phosphate serving as raw materials to generate a chlorinated phosphating reagent; and carrying out quaternization reaction by taking the intermediate product and a chlorinated phosphating reagent as raw materials to prepare a phosphorus phenyl imidazoline quaternary ammonium salt compound, and concentrating the phosphorus phenyl imidazoline quaternary ammonium salt compound to prepare the medicament. In the agent, an imidazoline quaternary ammonium salt compound prepared by quaternization reaction is an important component for exerting a corrosion inhibition effect, and a phosphate radical group and a phenyl group which are nodular through substitution reaction are important components for exerting scale inhibition and paraffin inhibition effects. The three-proofing solid medicament has very obvious inhibition effects on corrosion, scaling and wax precipitation of metal.

The invention discloses a self-repairing speed bump based on vehicle pressure power generation and a traffic light device. The self-repairing speed bump based on vehicle pressure power generation comprises a left round head unit, a right round head unit and a plurality of middle units, wherein the left round head unit and the right round head unit are oppositely arranged left and right; the middle units are arranged between the left round head unit and the right round head unit and are connected with each other; the middle unit comprises a base plate, a front check block, a rear check block, an upper cover body, a hydraulic power generation mechanism and a gear power generation mechanism, the front check block and the rear check block are oppositely arranged at the front end and the rear end of the base plate respectively, and the hydraulic power generation mechanism and the gear power generation mechanism are both arranged on the base plate and located between the front check block and the rear check block; according to the intelligent deceleration strip, electricity resources can be greatly saved, the vehicle speed is reduced, meanwhile, energy recycling is achieved, the durability and maintenance convenience of the deceleration strip are greatly improved by arranging the heating wire, and therefore the long-term maintenance cost is reduced, and the technical problem that an existing deceleration strip and traffic light device is single in function is effectively solved.

The disinfection type grinding wheel pen comprises a pen holder and a pen cap, the pen holder is of a tubular structure with two open ends and a hollow interior, an observation window is formed in the side wall of the pen holder, a pen holder is arranged at the top end of the pen holder, a fixing plate is fixedly connected to the bottom end of the pen holder, a plurality of first through holes are evenly formed in the fixing plate, and the pen cap is fixedly connected with the pen holder. A grinding wheel assembly is arranged at the bottom end of the fixing plate, a storage assembly is arranged in the pen holder, and a balloon is arranged at the top end of the storage assembly. Compared with the prior art, the disinfection type grinding wheel pen is simple in structure, easy to assemble, convenient to carry and low in manufacturing cost, reduces frequent replacement of grinding wheel disinfectant in clinical nursing work, avoids the phenomenon that the hospital infection requirement is not up to the standard due to the fact that the hand makes direct contact with a medical grinding wheel, and can meet the clinical actual use requirement; and the working efficiency is improved.

The invention relates to the technical field of lens processing, in particular to a lens strengthening and antifogging production method which comprises the following steps: S1, spraying a strengthening layer; s2, drying and cooling; s3, carrying out plasma treatment; s4, spraying antifogging liquid, drying, cooling, inspecting and packaging. Through dispensing and baking treatment of the strengthening liquid and the anti-fog liquid, a thin film with strengthening and anti-fog functions is formed on the surface of the lens, and the hardened wear-resistant hydrophilic anti-fog lens is formed, so that water vapor is effectively prevented from being condensed into water drops on the surface of the lens, the definition of the lens is kept, and the visual field quality is improved; meanwhile, in the production process, the bonding force between the anti-fog layer and the lens base material of the surface of the lens subjected to plasma treatment is stronger, and the anti-fog layer is not easy to fall off or lose efficacy, so that the durability of the anti-fog performance is ensured, the trouble of frequently replacing or maintaining the lens by a user in the use process is reduced, and the produced lens can better meet the use requirements of multiple scenes.

The utility model relates to the technical field of wheel hub detection, in particular to a three-coordinate wheel hub detection tool which comprises two groups of connecting plates which are symmetrically arranged, nylon supporting rods are symmetrically arranged at the tops of the connecting plates, sliding blocks are symmetrically connected in the connecting plates in a sliding mode, and the nylon supporting rods are connected with the sliding blocks in a sliding mode. Pin holes are designed and machined in the two ends of the nylon supporting rod, positioning pins are inserted into the pin holes, pin holes are also formed in the top of the sliding block, the bottom ends of the positioning pins are inserted into the sliding block through the pin holes, and a driving assembly used for controlling the sliding block to slide is installed in the connecting plate. According to the three-coordinate hub detection tool provided by the utility model, the hub is supported by the nylon supporting rods, the distance between the nylon supporting rods is adjusted by the adjusting assembly, and the three-coordinate hub detection tool has the advantages that the applicability is wide, the human input and the time cost are reduced, the equipment abrasion is reduced, and the reliability and the accuracy of product quality detection are improved.

The tool comprises the slotted nut and a dismounting cutter, the dismounting cutter comprises a cutting edge section on the front side, the cutting edge section comprises a positioning groove allowing the slotted nut to be installed in, the cutting edge section is in a cylinder shape extending in the left-right direction in the length direction, and the cutting edge section is located on the upper side of the positioning groove and arranged in an opening mode. A left positioning insertion block and a right positioning insertion block are arranged on the portions, located on the left side and the right side of the positioning groove, of the blade section in a protruding mode respectively, and the slotted nut is provided with a disassembly and assembly groove allowing the left positioning insertion block and the right positioning insertion block to be inserted therein. By the adoption of the scheme, the tool facilitating dismounting and mounting of the slotted nut is provided, the dismounting cutter can be rotated to drive the slotted nut to rotate by inserting the left positioning inserting block and the right positioning inserting block into the dismounting and mounting groove, and therefore convenience is provided for dismounting of the slotted nut.

The utility model relates to the technical field of steel processing, in particular to a tool clamp for steel welding, which comprises a base and two clamping groups arranged along the length direction of the base, each clamping group comprises a fixed platform, a lifting device, a lifting platform, two telescopic arc-shaped clamping plates and a plurality of moving devices, the fixed platform and the lifting platform are correspondingly arranged up and down, the lifting device is fixed to the position, opposite to the upper portion of the fixed platform, of the base, the fixed platform is erected on the base, the lifting platform is arranged on the lifting device, and the moving devices are arranged on the fixed platform and the lifting platform respectively. The two ends of the two telescopic arc-shaped clamping plates are rotationally connected with the moving devices correspondingly. According to the tool clamp for steel welding, the tool clamp can be suitable for clamping and fixing more steel of different sizes and shapes, further, the procedure steps of frequently replacing a clamping head or a clamping tool and moving and clamping the steel are reduced, the production efficiency is improved, and the labor intensity of workers is relieved.

The utility model discloses a high-purity sulfuric acid filter and relates to the technical field of high-purity sulfuric acid filtration. The high-purity sulfuric acid filtering device comprises a filtering box, a partition plate is fixedly installed on the inner wall of the bottom of the filtering box and divides the interior of the filtering box into a main liquid storage cavity and an auxiliary liquid storage cavity, and the main liquid storage cavity and the auxiliary liquid storage cavity are both used for storing filtered high-purity sulfuric acid. And a first liquid discharge pipe and a second liquid discharge pipe fixedly penetrate through one side of the main liquid storage cavity and one side of the auxiliary liquid storage cavity respectively. According to the utility model, through the innovative design of the material storage assembly, the problems of improper impurity collection and treatment are effectively solved, the risks of resource waste and secondary pollution are reduced, meanwhile, the frequency of replacing and cleaning the filter screen is reduced, the operation difficulty is reduced, and the production efficiency is improved; and due to the arrangement of a scraper and an inclined panel, the impurity collecting efficiency is further improved, and the maximization of the filtering effect is ensured.

The utility model discloses a special pump of refined phosphoric acid extraction process, including pump body, the inlet end of pump body is connected with filter assembly, and this filter assembly includes casing, import pipe, export pipe, locating ring, filter core and cover, install import pipe at casing outside bottom, install export pipe and pump body's inlet end connection at inside top, and the cover is screwed at the top of casing, and the position of casing inside is close to the top and is equipped with the locating ring, and the filter core is screwed at the bottom of cover, and the filter core passes through the locating ring from top to bottom, and the filter core outer wall is closely matched with the locating ring. The utility model not only can intercept tiny particle impurity, eliminate emulsification inducement from the source, reduce demulsifier use cost, but also can ensure that the raw material clean and pollution -free enters subsequent chemical reaction or process step, avoids catalyst poisoning and side reaction and takes place, and improves product quality and production efficiency.

The utility model relates to the technical field of nickel carbonate production, concretely to reaction material conveying pipeline of nickel carbonate, including feed conveying subassembly and additional conveying subassembly, feed conveying subassembly includes first conveying pipe, and the top of first conveying pipe outer wall and the position close to left end are equipped with feed pipe, and first conveying pipe is equipped with detachable first wear -resistant lining pipe in, and the outer wall of first wear -resistant lining pipe is equipped with the feed port of communication with feed pipe, and the left end of first conveying pipe is equipped with anti -blocking flow guide subassembly, and additional conveying subassembly includes the second conveying pipe of communication with first conveying pipe, and second conveying pipe is equipped with detachable second wear -resistant lining pipe in. The reaction material conveying pipeline of nickel carbonate, through adopting detachable wear -resistant lining pipe, directly contacts corrosive medium and solid particles in nickel carbonate slurry, effectively resists chemical corrosion and mechanical wear and tear, greatly prolongs the service life of pipeline, reduces the frequent replacement problem of conveying pipeline due to the inner wall damage.

The utility model belongs to the technical field of tire production and processing, and particularly relates to a tire fixing mechanism for tire production and processing, which comprises a processing table. The top of the machining table is fixedly connected with a pair of supporting plates. A machining assembly is arranged on the side wall of one supporting plate. A first driving motor is fixedly connected to the bottom of the processing table; the output end of the first driving motor penetrates through the side wall of the machining table and is fixedly connected with a chassis. A plurality of groups of supporting columns are fixedly connected to the top of the chassis; during work, tires are machined through the machining assembly, the first driving motor is started in the machining process to drive the tires to rotate, then the surfaces of the tires are fully machined, through cooperation of the structures, the tires of different specifications can be machined, and the machining efficiency is improved. And meanwhile, when the tire is machined, the tire can continuously rotate to change the machining surface, so that the tire is machined more conveniently and quickly.

The utility model provides a motor transmission center locking mechanism which comprises a base, a motor and a transmission mechanism, the transmission mechanism comprises a main shaft, a brake mechanism is arranged on the outer side of the main shaft, the brake mechanism comprises a mounting frame, two movable rods are rotationally connected to the inner side of the mounting frame and connected through a connecting rod, an air cylinder is arranged on one side of the mounting frame, and the air cylinder is connected with the main shaft. The output end of the cylinder is connected with one end of the connecting rod; the inner side of the movable rod is rotationally connected with two embracing rings, and brake pads are arranged on the inner sides of the embracing rings. A mounting groove is formed in the position, close to the brake pad, of the spindle, a copper sheet is arranged in the mounting groove, an electromagnetic plate is arranged on the inner side of the brake pad, and electromagnetic damping is conducted on the spindle through the electromagnetic plate and the copper sheet so as to brake the spindle. The braking device is good in braking effect and high in response speed, and the safety and the working efficiency of equipment are improved.

The utility model relates to a vehicle, specifically provide a vehicle interface assembly for connecting clothes pole, vehicle clothes pole and vehicle, aim at solving the existing vehicle clothes pole mounting interface exists interface exposure, influence beautiful and lack the closed protection problem. For this purpose, the utility model's vehicle interface assembly includes fixed part, its fixed connection in vehicle, is provided with first through -hole on fixed part, closed part, its detachable connection in fixed part, closed part can close first through -hole, first connecting piece, it sets up in first through -hole, and first connecting piece is used for connecting clothes pole. The utility model's vehicle interface assembly sets up first through -hole on fixed part, and realizes the hiding and closing of interface with the detachable closed part, can effectively avoid interface exposure when not using clothes pole, promotes the overall beautiful degree in car, when needing to use, only need to detach the closed part and can install clothes pole through first connecting piece.

The utility model provides a cart for internal medicine nursing, which belongs to the technical field of medical equipment and comprises a bottom frame, universal wheels, a storage cabinet and a storage box, the universal wheels are fixed at four corners of the bottom end of the bottom frame, the storage cabinet is fixed at the top end of the bottom frame, and the storage box is mounted at the top end of the storage cabinet. The stretching structure comprises guide seats fixed to the two sides of the top end of the shell, a movable plate fixed to the top end of the sliding block, a synchronous assembly arranged at the bottom end of the movable plate, a suspension fixed to one side of the top end of the containing table, and a push handle fixed to one side of the top end of the bottom frame. According to the utility model, by pulling a group of moving plates, the synchronous rod and the cantilever drive the two moving plates to move synchronously, so that the area of the placing table is expanded, the extension function of the worktable of the device is realized, and the surface area of the worktable of the device can be expanded, so that more medical equipment and nursing materials can be accommodated; and the requirements of frequently replacing and moving articles are reduced, so that the continuity and efficiency of nursing work are improved.

The present invention discloses a method, device and equipment for replacing a self-powered neutron detector assembly. The method is based on the difference in neutron injection rate levels at different positions of the reactor core, and uses the burnup life and service life of the reactor core self-powered neutron detector assembly as service performance evaluation indicators to analyze the service performance of the self-powered neutron detector assembly; and combines the historical operating condition information of each energized neutron detector assembly, uses an intelligent prediction algorithm to evaluate whether the self-powered neutron detector assembly meets the requirements of neutron measurement in the next fuel cycle, and combines actual engineering needs to evaluate whether the detector assembly can extend its service life. The present invention can reduce the frequent replacement of core detector assemblies and improve the economy of nuclear power plants.

The invention discloses an integrated circuit chip composite suction device, and relates to the field of robot tool clamp application, the integrated circuit chip composite suction device comprises a connecting plate, the bottom of the connecting plate is provided with a first tool clamp and a second tool clamp by arranging a telescopic cylinder, and the first tool clamp is provided with a plurality of groups of first suckers and second suckers; the second tool clamp is provided with a plurality of sets of small third suction cups in a staggered mode and is suitable for adsorbing and clamping small-size chips and large-size chips within a certain range, and the second tool clamp is provided with a plurality of sets of small third suction cups in a staggered mode and is suitable for adsorbing small-size chips within a certain range. The first tool clamp and the second tool clamp can clamp and absorb volume chips and large-volume chips within a certain range, the first tool clamp can absorb the chips through the negative pressure suction cup and can also clamp the chips, the second tool clamp can absorb micro chips within a certain range, and the third suction cup arranged in a staggered mode can clamp the chips within a certain range. And the size of the adsorbed microchip can be increased on the same tool with small volume.

The utility model relates to pet equipment technical field discloses a kind of pet water fountain, comprising: water storage tank and water purifying tank are equipped on shell;First pump body is connected water storage tank, water purifying tank respectively by pipeline;Heating device is set on water purifying tank, for the water source heating in water purifying tank;Cooling device is set in shell, for the water source cooling after heating;Second pump body is connected water purifying tank and cooling device respectively;Drinking bowl is set in the outside of shell;Third pump body is connected with water purifying tank, drinking bowl respectively;Fourth pump body is connected with drinking bowl, water storage tank, and fourth pump body transports the water source in drinking bowl.The utility model can realize sterilization and water source endurance, without frequently replacing.

The utility model relates to the technical field of mobile phone shell, concretely relates to a high strength mobile phone shell, the mobile phone shell includes the casing for containing mobile phone, the casing includes the frame and the coating that fits in the frame openwork department, the coating includes the wear -resisting layer, first fiber layer, second fiber layer and third fiber layer that set up in order from top to bottom laminated, the wear -resisting layer is used for wear -resisting scratch, first fiber layer and third fiber layer are used for promoting the strength of coating, second fiber layer is used for absorbing impact energy. The utility model aims at providing a kind of high strength mobile phone shell, through the laminated structure design of uniqueness, the combination of wear -resisting layer and multilayer fiber layer, not only promote the strength and wear resistance of mobile phone shell, but also effectively absorb impact energy, thereby in the protection mobile phone, prolong the service life of mobile phone shell.

The invention discloses a page replacement method and system of a self-adaptive NAND flash memory. The method comprises the steps of obtaining related information of an access page; judging whether the page is a new page or a page without the access historical record; if yes, the pages are marked, and the marked pages are inserted into two cache queues; when the queue containing all the LIR pages and the HIR pages is full of the stack, a victim page is selected from the other queue, and the victim page is processed; trimming and stacking a queue containing all the LIR pages and the HIR pages; performing self-learning to adjust the cache amount of the HIR page; judging whether the cache amount of the current HIR page is equal to the target cache amount or not; if yes, ending; if not, the victim page is selected from the other queue, and the victim page is processed. By implementing the method provided by the invention, the characteristics of the NAND flash memory are adapted, the asymmetric cost of reading and writing operations is considered, and the service life of the NAND flash memory is prolonged, so that the optimal overall performance is achieved.

The present invention discloses an automatic loading and unloading device, which is applied to LED high-speed crystal bonding equipment, including a rotating crystal ring picking and placing mechanism suspended on the column of the LED high-speed crystal bonding equipment and a feeding mechanism placed on the platform of the LED high-speed crystal bonding equipment. The rotating crystal ring picking and placing mechanism can place the crystal ring from the lifting component of the feeding mechanism on the wafer workbench of the LED high-speed crystal bonding equipment through lifting and rotating movements, or can recover the produced crystal ring from the wafer workbench of the LED high-speed crystal bonding equipment to the recovery box of the feeding mechanism. The feeding mechanism is used to provide crystal rings to the rotating crystal ring picking and placing mechanism and to recover and store used crystal rings. The automatic loading and unloading device improves the automation degree of the LED high-speed crystal bonding equipment and improves the production capacity. The present invention also discloses an LED high-speed crystal bonding equipment including the above-mentioned automatic loading and unloading device, and its beneficial effects are the same as those of the automatic loading and unloading device.