35results about How to "Reduce consumable costs" patented technology

The utility model relates to the technical field of microorganism collection, and discloses a microorganism collection device for object surface monitoring, which comprises a base body, an object surface contact belt, a clamping component and a sealing component, an opening is arranged on the base body, and the clamping component can enter the base body from the opening. After the device finishes sampling, the contact surfaces of the two groups of object surface contact belts are extruded and attached by extruding the telescopic rod, so that a sealed container is directly formed, and the contact surfaces adhered with microorganisms are positioned in a closed space. The outside of the container is a non-contact surface, and the inside of the container is not in contact with external microorganisms in the process of transferring to a sterile table or a transport case, so that the sample purity is ensured; and the sealed container does not need an additional packaging step, so that the risks of sample exposure and pollution are reduced.

The invention discloses a sewage filtration treatment method, which belongs to the field of sewage treatment, and comprises a pretreatment stage, a composite membrane filtration stage, an advanced oxidation-adsorption coupling filtration stage, a deep purification stage and a resource recovery stage, and is characterized in that suspended particulate matters and part of organic matters are removed by adjusting the pH value of sewage and adding a modified diatomite adsorbent; carrying out pressure filtration through a three-stage composite membrane assembly to obtain a primary filtrate; then, a ferrous ion-sodium persulfate-ozone-ultraviolet synergistic oxidation process is adopted, coupling filtration is achieved in combination with a double-layer modified activated carbon filter layer, and then deep purification is completed through ion exchange and ultraviolet disinfection. According to the sewage filtering treatment method, adsorption, filtering and advanced oxidation technologies are efficiently coupled, the treatment effect and the resource utilization rate are considered, operation is easy and convenient, running is stable, the content of COD, suspended particulate matter and ionic pollutants in sewage can be effectively reduced, and the sewage filtering treatment method is suitable for various industrial and domestic sewage treatment scenes.

The utility model discloses a snapping type pre-embedded wall connecting piece which comprises a bottom plate, a threaded conical rod, a shear force rod, a steel pipe fitting and a nut, one end of the threaded conical rod is a conical column body with the diameter gradually increasing, and the other end of the threaded conical rod is a screw rod with the diameter smaller than the maximum diameter of the threaded conical rod. The wall connecting piece is simple and small in structure, not prone to being lost, low in cost, convenient to install, easy to pre-embed and free of influence on follow-up wall construction, the wall connecting piece of a metal structure can bear strong impact and vibration, and the wall connecting piece of the metal structure can be used for connecting the wall connecting piece of the metal structure to the wall connecting piece of the metal structure to the wall connecting piece of the metal structure to the wall connecting piece of the metal structure. The conical structure does not need to be provided with a protective sleeve, direct strong drawing is carried out, so that the shearing force of the shearing force rod can be recycled after being damaged and broken, the consumable cost is greatly reduced, the drawing resistance not smaller than the sliding resistance of the fastener can be met by reasonably designing the size, the installation depth is small, the use function of reinforced concrete is not affected, and repairing is easy.

The invention belongs to the technical field of clinical medicine, and relates to a method for extracting autologous platelet-rich plasma, which comprises the following steps of: adding an anticoagulant into an injector I in advance, then extracting autoblood, uniformly mixing for 3-4 times back and forth by virtue of an injector II, then centrifuging for 10 minutes at the speed of 1,500 revolutions per minute, sucking the platelet-rich plasma in the injector I by virtue of an injector III, and extracting the platelet-rich plasma in the injector II by virtue of an injector III. And centrifuging again, and discarding the supernatant by using an injector IV to obtain a high-concentration PRP finished product. According to the extraction method, in the extraction process, blood is uniformly mixed for 3-4 times back and forth between an injector I and an injector II, and the blood is centrifuged for 10 minutes at the speed of 1500 r / min in the first centrifugation process, so that the platelet concentration in the finally extracted PRP is remarkably improved compared with the platelet concentration in peripheral blood; the red blood cells reach the quality control target, the white blood cells are obviously reduced, and a set of standardized autologous platelet-rich plasma clinical extraction method which is simple in extraction device, low in consumable cost, simple to operate and high in extraction concentration is formed.

This invention provides a metal mask for silicon-based liquid crystal light valve chips, relating to the field of semiconductor optoelectronic device manufacturing technology. It includes a metal substrate and a pixel aperture array, alignment mark area, stress buffer, and reinforced border disposed on the metal substrate, adaptable to mass production evaporation and photolithography processes for LCoS light valve chips. The metal substrate consists of four layers stacked sequentially from bottom to top: a substrate layer, a molybdenum transition layer, a Mo-Ta-N functional pattern layer, and an Al2O3-SiO2 composite passivation layer. The molybdenum transition layer is deposited on the substrate surface using magnetron sputtering, with a surface roughness Ra < 0.15 nm. The Mo-Ta-N functional pattern layer is deposited on the surface of the molybdenum transition layer using reactive magnetron sputtering. The near-vertical, low-roughness aperture sidewalls of this invention result in shadow-free evaporation, uniform electrodes, and clear edges, improving the light utilization and contrast of the LCoS chip. It also increases the utilization rate of the evaporation material and reduces material loss during mass production.

The utility model discloses a kind of hoop type snap ring punch, comprising: punch base body;Connector is inserted with the top end of the punch base body, and the inner cavity of the connector with the punch base body is communicated, and the outer wall top end of the connector is equipped with external thread;Hoop type dismounting assembly is arranged between the punch base body and the connector.The hoop type snap ring punch, by being equipped with hoop type dismounting assembly, punch base body can be disassembled, so as to facilitate the replacement of sleeve and snap ring, lower consumable cost, and only need to re-install punch base body, without adjusting punch press part again, improve work efficiency.

The invention relates to the field of transformer production, in particular to a high-frequency transformer middle section automatic assembly line which comprises a magnetic core mounting assembly, a transformer rubber coating assembly, a characteristic testing assembly, a transformer dispensing assembly, a laser marking assembly and a discharging disc which are sequentially arranged. The two groups of magnetic cores are assembled on the transformer by the magnetic core mounting assembly; the transformer encapsulation assembly is used for winding and fixing two groups of magnetic cores on the transformer through adhesive tapes; the characteristic test assembly is used for carrying out characteristic test on the rubber-coated transformer; the transformer dispensing assembly is used for dispensing the top of the tested transformer; the laser marking assembly is used for marking the transformer subjected to glue dispensing; the discharging disc collects the marked transformer, and the production efficiency is improved through the full-process automatic design of magnetic core installation, rubber coating, testing, dispensing, marking and discharging.

The utility model relates to the technical field, in particular to a self-rotating type pulse dust cleaning device which comprises a back-blowing airflow guiding module and a positioning ring, the section shape of the positioning ring is matched with a filter cartridge in dust removal equipment, the positioning ring is fixedly connected to the upper surface of the filter cartridge, and the back-blowing airflow guiding module is fixedly connected with the positioning ring. When the dust removal equipment stops working, the pulse blowback device is started, high-pressure airflow in the vertical direction is released to the filter cartridge, and the self-rotating pulse dust removal device can play roles in dispersing, guiding and energy conversion on the axial high-pressure airflow, so that the high-pressure airflow is uniformly distributed on the inner wall of the filter cartridge, and the dust removal efficiency is improved. The dust removal device has the characteristic that the dust removal efficiency of the filter cartridge is improved.

This invention discloses a pressure-adjustable extravascular occlusion balloon with drainage and flushing function, relating to the field of vascular hemostasis technology. It includes a tubing wall with a C-shaped front end. Several balloons that can compress each other are arranged inside the C-shaped tube. A balloon catheter is inserted through the tubing wall, with one end connected to the balloon and the other end extending out from the rear end of the tubing wall. This invention can quickly control massive bleeding, achieving hemostasis without causing permanent loss of blood supply to the controlled blood vessel, thus avoiding related complications caused by ischemia.

The utility model relates to the technical field of cartons, and one embodiment of the utility model provides an easy-to-tear carton which comprises a carton board, folding lines are arranged on the carton board, a height adjusting assembly is arranged on the carton board, and an adhesion assembling assembly is arranged on the carton board; and the height adjusting assembly comprises an inserting cavity, the outer side wall of the folding line is provided with a breaking line, and the breaking line is formed by arranging a plurality of vertical through holes along a straight line. By means of the technical scheme, the problems that in the prior art, a conventional carton is fixed in height and difficult to flexibly meet the packaging requirements of objects with different heights, in practical application, merchants need to prepare cartons of various specifications, and the inventory management cost is increased are solved; when a consumer receives too large or too small cartons, the space cannot be effectively utilized, and resource waste is caused, for example, in the field of clothing e-commerce, clothes of different lengths need to be packaged by cartons of different heights, and if the height of the cartons cannot be adjusted, the problems that packaging is not attached, packaging materials are wasted and the like occur.

This utility model discloses an optical testing structure for an in-cell screen backlight display module, specifically relating to the field of optical testing equipment technology. It includes a worktable, a disassembly plate, and test columns. A pressure plate is located below the fixed plate, and the disassembly plate is installed at the bottom of the pressure plate. Each set of test columns has a rubber head embedded at its bottom. By designing a matrix of test columns and rubber heads, it can simulate pressing scenarios in actual use. The array of protrusions pressing down on the screen can simulate mechanical stress scenarios such as touch pressing, drop impact, or external compression during daily use, detecting the screen's tolerance under different pressures. Optical changes in the pressure area of ​​the backlight module can be directly observed. The separate design of the rubber heads and test columns allows for individual replacement of worn parts, eliminating the need to scrap the entire test column and reducing consumable costs. Furthermore, rubber heads of different hardness can be replaced according to testing needs to simulate the impact of different materials on the screen.

The invention discloses a method for self-growth of antimony bismuth slag under a composite seed crystal reinforced alkaline medium. The method comprises the following steps: S1, adding a seed crystal into a to-be-purified desorbed solution generated in the self-purification process of a copper electrolyte; s2, slowly dropwise adding a precipitator into a system in the step S1, adjusting the pH value to 11.0-13.5, and carrying out precipitation reaction; and S3, after the reaction is finished, standing and settling, and finally, carrying out solid-liquid separation to obtain large-particle-size antimony and bismuth settled slag and antimony and bismuth settled liquid. According to the method, the grain size of the antimony and bismuth precipitation slag is effectively increased through seed crystal induction in combination with ultrasonic-assisted strengthening, so that the slag-liquid separation efficiency is improved, and the production cost is reduced.

This application relates to a hydraulic self-locking filter plate sealing mechanism for a plate and frame filter press, and pertains to the technical field of filter presses. It includes a support plate, to which a telescopic mechanism is fixedly connected. A filtration mechanism is also fixedly connected to the outside of the support plate. The telescopic mechanism includes a drive assembly for driving, which is fixedly connected to the outside of the support plate. A connecting support column is fixedly connected to the outside of the drive assembly. A rotating rod connecting ring is rotatably connected to the outside of the connecting support column, and a connecting rotating rod is fixedly connected to the outside of the rotating rod connecting ring. This application ensures stable operation of the mechanism, its modular structure facilitates easy disassembly and assembly of components, allows for quick location and repair in case of failure, has fewer mechanical transmission parts, reduces maintenance workload, effectively shortens downtime, and improves equipment utilization.

This invention belongs to the field of spraying technology and relates to a low-cost, long-lasting metal-reinforced anti-corrosion coating and its preparation method adapted to the alternating salt and freeze environments of cold regions worldwide. The coating consists of, from the inside out, a metal substrate, an arc-sprayed pure aluminum underlayer, and a controllable, high-energy accelerated oxidation dense alumina ceramic transition layer. This invention focuses on core technologies for metal surface strengthening, using arc spraying instead of high-cost supersonic spraying, significantly reducing construction costs. It innovatively employs two exclusive high-energy accelerated oxidation processes: electric furnace oxygen-assisted high-temperature oxidation and laser in-situ oxidation. These processes can rapidly generate a highly dense, highly sealed alumina ceramic reinforcement layer on the surface of the sprayed aluminum metal layer, completely solving the industry shortcomings of existing processing technologies, such as the thinness of traditional electrophoretic coatings, easy penetration and corrosion of the substrate by chloride ions, and the porosity, insufficient density, and poor salt and freeze resistance of simple thermal spraying aluminum coatings. This solution features pure metal-ceramic reinforced protection, free from interference from organic paint coatings. It offers flexible processing, strong substrate versatility, and wide applicability. The metal coating, after high-energy oxidation reinforcement, possesses excellent salt spray resistance, freeze-thaw resistance, aging resistance, and high density and impermeability. It is specifically designed for harsh working conditions in global temperate cold regions, high-altitude permafrost regions, high-salt freeze-thaw environments, and low-temperature strong ultraviolet radiation. Its overall cost-effectiveness and service life far surpass existing traditional metal corrosion protection technologies.

This invention relates to the field of nitrogen generator technology, and provides a self-cleaning filtration system for a nitrogen generator, including a primary pre-filtration chamber and a precision filtration chamber connected in series along the airflow direction, as well as a backflush air source system, a differential pressure monitoring device, a dust removal system, and a control system. The backflush air source system includes an air tank, a pressure reducing valve, and a backflush pipeline. The air inlet of the air tank is connected to the nitrogen outlet of the nitrogen generator through a branch pipe, and the air outlet is connected to the pressure reducing valve, the main backflush pipeline, and the backflush branch pipe. Each backflush branch pipe is connected to the backflush valve of the corresponding precision filter element on the precision filtration chamber. This invention can achieve online self-cleaning without stopping the machine, accurately match the cleaning time, use the nitrogen generated by the nitrogen generator as the backflush air source, simplify the structure, and reduce costs.

The utility model discloses a side core-pulling reset structure of automobile stamping part mould relates to automobile stamping part mould technical field, including mounting panel, angle adjusting assembly, lubricating assembly and power component, lubricating assembly and power component are installed to the upper end of mounting panel, the lower extreme of mounting panel is installed angle adjusting assembly, lubricating assembly contains dovetail type sliding seat no.

The utility model discloses a kind of embedding boxes for congenital megacolon specimen, it is related to the field of tissue embedding technology.It includes box body with filter hole, circular ring, tight knob column, helical segmentation strip and box cover.Circular ring is fixed along inside of side plate, helical segmentation strip is coiled in spiral, one end is connected with the tight knob column of center, the other end is fixed in circular ring, can adjust interval with knob column rotation to hold or release specimen.Tight knob column contains shaft sleeve, shaft cap and split type knob spoon, through hexagonal structure cooperation and the bistable clamping of arc spring and clamping groove, the clutch and stable rotation of knob spoon and shaft cap are realized, control helical strip tightness.Box body, circular ring, helical strip etc.are provided with round hole to ensure reagent penetration, box cover buckle sealing, label area is provided in front.The design realizes specimen integration fixation, maintains morphological continuity, simplifies material taking, embedding process, improves pathological diagnosis efficiency and accuracy.

The utility model relates to the technical field of cleaning tools in the textile industry, in particular to an illuminable twisting gun, which comprises a twisting gun handle, a lighting device and a lighting device. An output shaft of the motor extends out towards the axial direction of the twisting gun handle; the twisting gun metal rod is coaxially fixed with an output shaft of the motor; the twisting gun illuminating lamp is mounted on the twisting gun handle, and the illuminating direction faces the extension direction of the twisting gun metal rod; the rechargeable storage battery is fixed in the twisting gun handle; the twisting gun switch is installed on the twisting gun handle, and the twisting gun switch, the twisting gun illuminating lamp, the rechargeable storage battery and the motor are sequentially connected in series; and the twisting gun switch is used for controlling on / off of the motor and the twisting gun illuminating lamp. The problems that in the textile industry, when a cleaner cleans equipment, due to narrow equipment space, insufficient illumination and incapability of clearly seeing fluff and flock are solved, the cleaner can clean the equipment more easily, the working efficiency is improved, and the purposes of being environmentally friendly, economical, feasible and capable of being repeatedly used are achieved.

This invention belongs to the field of genetic engineering technology and discloses a method for synthesizing mussel adhesive protein using gene recombination technology, as well as related recombinant vectors and strains. The method uses the core functional genes of mussel byssalin 3 and 5 as templates, and constructs a recombinant expression vector pET-20b-fp-cut through artificial synthesis and overlapping PCR gene tandem. This vector is then transformed into *E. coli* BL21 to obtain the recombinant strain BL21 / pET-20b-fp-cut. A gradient-scale fermentation process is used to optimize the efficient expression of the target protein. The product is then extracted using a salting-out-acetic acid extraction combined with tyrosinase-catalyzed purification process. Finally, multi-dimensional quality testing is used to verify the indicators. This invention also provides the aforementioned recombinant expression vector and recombinant strain. This method can realize the industrial production of mussel adhesive protein, with a fermentation unit of 5.2 g / L, a dopa content of 11.2%, and a purity of 96.5%. It also exhibits low immunogenicity and meets quality standards, showing broad application prospects in biomedicine, cosmetics, and other fields.

The filter element assembly comprises a filter element shell, a cover body and a filter material, a filter material cavity which is provided with an upward opening and used for installing the filter material is formed in the filter element shell, and a water outlet is formed in the side portion and / or the bottom of the filter element shell; the cover body is arranged at the opening of the filter element shell, and a water passing hole is formed in the cover body; a mounting part is arranged on the outer periphery of the upper portion of the filter element shell, the outer diameter of the mounting part is gradually increased from bottom to top, an elastic abutting part is arranged on the outer periphery of the mounting part, and the outer diameter of the mounting part is gradually increased from bottom to top so that the mounting part can be matched with an opening of a filter material mounting position within a set range. The sealing performance between the mounting part and the opening of the filter material mounting position is improved, the use requirement of water filtering kettles of various specifications can be met, and high universality is achieved.

A roller scraper fixing device for lithium battery production belongs to the technical field of lithium battery production. The rear fixing plate and the front fixing plate are fixedly connected through at least one screw, and positioning bolts are fixed to the left side and the right side of the front end of the rear fixing plate. The number of the positioning bolts is at least one, and the positioning bolts are evenly distributed in the width direction of the resin scraper. And the positioning bolt is one or a combination of more of a cylinder, an elliptic cylinder or a square column. And an adjusting gasket is arranged between the front fixing plate and / or the rear fixing plate and the resin scraper. According to the utility model, the positioning bolt is matched with the preset positioning hole of the scraper, so that the scraper can be accurately positioned and recycled after being repaired, the service life of the resin scraper is prolonged, and the consumable cost of the scraper is obviously reduced; the positioning bolts are uniformly distributed in the width direction of the scraper and are matched with various cylinder shapes, so that the mounting stability of the scraper is effectively improved, deviation or looseness in the working process is avoided, the graphite powder scraping effect is guaranteed, and the production yield of lithium battery pole pieces is improved.

The application discloses a laser selective melting forming method in the technical field of additive manufacturing, and uses D406A ultra-high strength steel with low Mn content as a raw material, adopts a plasma rotating electrode atomization method to prepare metal powder, and then forms through a laser selective melting technology, so that D406A ultra-high strength steel printed parts with strength and impact performance equivalent to forged parts can be obtained through performance heat treatment. The D406A ultra-high strength steel formed through the laser selective melting has the advantages that the printed parts and the substrate can be separated through wire cutting without annealing, performance heat treatment can be directly carried out, and hot isostatic pressing treatment is not needed to reduce defects such as pores, so that the post-processing process is simplified, the production cycle is shortened, and the production cost is reduced.

The invention discloses a prefabricated liquid for determining total iron in water, a preparation method and a determination method, and belongs to the technical field of water quality detection, every 1000 mL of the prefabricated liquid comprises 45-55 mL of concentrated hydrochloric acid, 20-30 mL of sodium hydroxide, 20-30 mL of sodium hydroxide, and the balance of water. 9 g to 11 g of hydroxylamine hydrochloride; 0.12 g to 0.18 g of phenanthroline hydrate; the acetic acid-sodium acetate buffer salt is used for adjusting the pH value of a final system to 4.5 + / -0.2; and the balance of deionized water. The invention provides a chemically stable and single-solution pre-prepared reagent, a strong acid extracting agent, a high-efficiency reducing agent and an iron ion color developing agent are premixed into a whole, the pre-mixed reagent maintains an extremely low pH value to maintain stability during storage through a specific buffer-stable system design, and after a water sample is added for dilution, the pH value of the system automatically rises to a range required by color development, so that the color development is realized. Therefore, the three-step reaction of acidolysis, reduction and color development can be automatically and continuously carried out. The corresponding determination method is very simple and convenient.

The utility model discloses a vertical fish tank is with sediment filter, including filter box body, the bottom surface of filter box body is provided with bottom division part and will filter box body's bottom area divide into sediment area and water inlet area, the top position of filter box body in is located bottom division part and water inlet area is provided with internal division part, and internal division part and water inlet area jointly enclose water inlet cavity, and the bottom of internal division part and the top of bottom division part form the connecting channel that communicates sediment area and water inlet cavity, the surface of internal division part is the guide inclined plane that inclines to sediment area, is used for guiding water flow and depositing deposit, the position of filter box body corresponds water inlet cavity and is provided with the water inlet that communicates with water inlet cavity, the position of filter box body corresponds sediment area and is provided with the blowdown that communicates with sediment area, and the blowdown installs the blowdown switch valve at the place, the top of filter box body and the position of being located guide inclined plane high place above and being provided with the outlet / flush water mouth that communicates with filter box body in.

The invention discloses a bearing head for chemical mechanical polishing, a polishing system and a polishing method, and belongs to the technical field of semiconductor manufacturing. The bearing head comprises a base; the gas film assembly is arranged below the base and is used for loading a wafer to be polished; the retaining ring is arranged below the base and located on the outer peripheral side of the gas film assembly; the retaining ring comprises: a fixing member disposed below the base; the movable part is arranged in the fixed part in a sliding manner, and a groove for conveying polishing liquid is formed between the bottom surface of the movable part and the bottom surface of the fixed part; the driving assembly is arranged between the base and the movable part and connected to the movable part so as to respond to abrasion of the movable part and actively drive the movable part to move in the vertical direction, so that the abrasion loss of the bottom face of the movable part is compensated, and the depth of the groove is kept constant.

The invention relates to the technical field of digital oral diagnosis and treatment, and discloses an intelligent diagnosis device and method for recording and analyzing oral occlusion, the device comprises an occlusion recording module, a first color developing agent, a second color developing agent and an image analysis module, the occlusion recording module is composed of an upper-layer sheet, a medical silica gel layer and a lower-layer sheet which are arranged in a separable manner from top to bottom; wherein the outer surfaces of the upper sheet and the lower sheet are respectively provided with a super-hydrophobic coating. Before occlusion, color developing agents with different colors are coated on the surfaces of corresponding coatings; and after occlusion separation, upper and lower tooth occlusion color marks are formed. The image analysis module obtains a double-sided image, identifies a positioning mark in a medical silica gel layer, performs spatial registration on upper and lower layer color marks, and establishes a corresponding relation of occlusion contact points; and then extracting an average gray value and a pixel area of each point, substituting the average gray value and the pixel area into a pre-stored gray and pressure conversion function, and calculating relative occlusion pressure information of each point. The method corresponds to the device. Synchronous and quantitative recording and analysis of occlusion contact of the upper jaw and the lower jaw are achieved.

This invention relates to the field of chemical mechanical polishing (CMP) pad technology, specifically to a highly hydrophilic and wear-resistant CMP polishing pad, its preparation method, and its application. The invention uses cyanosiloxane monomers as raw materials, preparing highly active carboxylate silsesquioxane powder through one-step alkaline hydrolysis, and achieving nanoscale uniform dispersion of this powder in polyurethane. After pre-treating the base fabric with an acid-base oscillating impregnation agent, the nanoscale uniformly dispersed slurry is coated onto the base fabric, and then solidified to obtain the target product. This invention solves the technical problems of difficulty in balancing hydrophilicity and wear resistance, and poor polishing uniformity in existing hydrophilic modification polishing pads. The polishing pad produced is used for wafer polishing, exhibiting less than 3% intra-wafer non-uniformity, fewer surface defects, and extended service life. The process of this invention is fully compatible with existing wet production lines for polyurethane polishing pads, requiring no additional equipment. The process is simplified, batch stability is strong, and industrial mass production is possible, adapting to the high-precision, low-defect polishing requirements of advanced semiconductor processes below 14nm.

This application relates to the technical field of marble processing equipment and discloses a marble infrared edge cutting device, including a device body. A support chamber is installed inside the device body, and a first electric cylinder is embedded in the upper surface of the support chamber. A pressure sensor is bolted to the telescopic end of the first electric cylinder, and a support platform is bolted to the upper surface of the pressure sensor. A side support frame is welded to the side surface of the device body. In this application, by employing the coordinated control of the grid-like support platform and the electric cylinder, when the cutting blade approaches the support platform, the corresponding area of ​​the support platform can be precisely lowered by the electric cylinder, so that the support platform below the cutting blade is suspended from the marble. This avoids direct contact between the cutting blade and the support platform in terms of material space. This design can significantly reduce damage to the cutting blade caused by collision and friction, such as chipping and wear, and reduce the frequency of tool replacement and consumable costs.

The utility model relates to printing equipment technical field discloses a round net printing screen, including round net body and two round net cylinders, the side of two round net cylinders adjacent all is provided with annular mounting slot, all be connected with a plurality of fixed components in two annular mounting slots, and the both ends of round net body are located in the inboard of two annular mounting slots respectively, and are connected fixed through a plurality of fixed components, and the support assembly is connected between two round net cylinders, and the inner wall of support assembly and round net body abuts. This kind of round net printing screen, through setting up support assembly between two round net cylinders, can provide effective support to the inboard of round net body, prevent extrusion deformation between it and printing carrier during printing process, improve printing quality, and simultaneously, the design of annular mounting slot is convenient for the installation and dismounting of round net body between two round net cylinders, realizes the separate replacement of round net body, and reduces the consumable cost of round net printing.

The invention discloses an aluminum alloy component detection method and system based on LIBS and PLS, and belongs to the technical field of metal material component analysis. The method comprises the following steps: 1, carrying out deoxidation flattening treatment on an aluminum alloy sample, and focusing on the surface of the aluminum alloy sample by using an aluminum alloy component detection system to obtain an LIBS spectrum of the aluminum alloy sample; 2, carrying out abnormal spectrum elimination on the LIBS spectrum of the aluminum alloy sample through a Pauta method, then carrying out background interference elimination and spectrum normalization by adopting a window translation minimum value method and sub-channel background intensity normalization, and extracting a characteristic peak of a normalized spectrum strongly related to the components of the aluminum alloy sample; 3, using PLS to construct and train an aluminum alloy component prediction model; and 4, inputting the characteristic peak of the normalized spectrum of the aluminum alloy sample into the trained aluminum alloy component prediction model to obtain a component prediction result of the aluminum alloy sample. Compared with the prior art, non-destructive rapid high-precision second-level detection of aluminum alloy components is realized.