71results about How to "Avoid removal" patented technology

The invention discloses a device based on contour in-situ measurement fitting and an adaptive efficient grinding method, and belongs to the technical field of part machining. The device comprises a grinding wheel contour measuring system used for measuring and fitting the outer contour of a grinding wheel and an angle precision positioning system used for measuring the contour, the size and the profile position of a part. Firstly, a part is installed, in-situ measurement and fitting of the surface profile of the part are carried out, and the included angle between the axis and the machine tool spindle axis is calculated; secondly, a grinding wheel is installed, and dynamic balance is adjusted; then, carrying out in-situ measurement and fitting to obtain the contour of the working surface of the grinding wheel, and carrying out minimum removal amount shaping on the grinding wheel; and finally, after adaptive grinding is carried out, the surface profile of the machined part is measured in situ again, and whether the requirement is met or not is detected. By measuring the original outlines of the adaptive part and the grinding wheel in situ, the problems of large-volume removal of the part and long dressing time of the grinding wheel in the grinding process are solved.

The invention relates to the technical field of colla corii asini decocting, and discloses an automatic colla corii asini decocting device which comprises a decocting pot body, a mounting frame is fixed to the decocting pot body, a first servo motor is fixed to the mounting frame, the output end of the first servo motor is connected with a rotating shaft, the rotating shaft is connected with a stirring rod, and the stirring rod is connected with a motor. A rotating shaft is fixed on the mounting frame, a material collecting box is arranged on the circumference of the rotating shaft, an air extracting pump communicated with the material collecting box is fixed on the mounting frame, a defoaming mechanism is fixed at the bottom of the material collecting box, and the defoaming mechanism removes floating foam above the liquid level through air suction; according to the technical scheme, when the rotating shaft drives the stirring rods to stir liquid, the defoaming mechanism can be driven to rotate together, so that the defoaming mechanism can firstly collect scum on the surface of the liquid, and after collection, air suction is performed through the air suction pump, so that the defoaming mechanism generates negative pressure to suck out the scum in the material receiving groove, and the scum removal work is facilitated.

The invention provides a support-free forming method for laser powder bed melting, and relates to the technical field of metal additive manufacturing, and the horizontal support-free forming method for laser powder bed melting comprises the following steps: S1, printing a first-layer support-free overhanging surface by using an out-of-focus laser beam, so that a first-layer metal powder is in a sintering state, and a first-layer sintering layer is formed; s2, printing a predetermined number of layers of support-free overhanging surfaces layer by layer by using an out-of-focus laser beam, melting each new printing layer, remelting the previous printing layer, and avoiding remelting to the lower surface of the first sintering layer; and S3, after printing of the support-free overhanging surface with the preset number of layers is completed, subsequent layer printing is conducted. The first sintering layer is printed by using the out-of-focus laser beam, so that a supporting foundation is provided for a subsequent overhanging structure, and the problem of collapse of the first layer is avoided. Fusion and combination of each new printing layer and the previous printing layer are controlled, remelting to the lower surface of the first layer is avoided, the upper surface and the lower surface which are not supported are smooth, and powder adhesion is avoided.

The utility model relates to the technical field of water treatment, in particular to a composite filter element, a filter element assembly and a water purification system, which comprise a first filter layer, an activated carbon fiber layer and a second filter layer which are sequentially wound on a central pipe from inside to outside, scale inhibitor or bacteriostatic agent particles are distributed on the activated carbon fiber layer; and when the activated carbon fiber layer is coiled, the scale inhibitor or bacteriostatic agent particles are sunk in the activated carbon fiber layer. The scale inhibitor is distributed on the activated carbon fiber layer in the form of particles, the scale inhibitor or bacteriostatic agent particles are well wrapped in the activated carbon fibers by utilizing the characteristics that the activated carbon fibers are thick, soft and easy to deform, and the deformation of the filter element is not caused, so that the scale inhibitor can be prevented from leaking, and the service life of the filter element is prolonged. And a special space for accommodating the scale inhibitor does not need to be arranged in the shell or the end cover.

The invention belongs to the technical field of preparation of aluminum-based composite materials, and particularly relates to a preparation method of a reinforced aluminum-based composite material through vacuum reciprocating smelting assisted thin-strip cast rolling. Comprising the steps of aluminum matrix material preparation, ceramic / aluminum matrix composite powder vacuum ball milling, aluminum matrix and ceramic / aluminum matrix composite powder vacuum reciprocating smelting, thin strip cast rolling, cast strip primary treatment, cast strip heat treatment, hot rolling, cold rolling, performance optimization and the like. An aluminum alloy matrix bar with specific components is selected, ceramic particle / aluminum matrix composite powder with the mass fraction of 5%-25% is prepared through vacuum ball milling, it is ensured that aluminum powder is completely attached to the surfaces of ceramic particles, and good wetting of the particles and an aluminum matrix is achieved. And then thin strip cast rolling, heat treatment, hot rolling, cold rolling and other treatments are carried out. And finally, the ceramic / aluminum-based composite material with the ceramic particles uniformly distributed on the matrix is prepared, and the ceramic / aluminum-based composite material shows excellent tensile strength, elongation and wear resistance and has no grain boundary segregation phenomenon.

The invention relates to the technical field of photovoltaic cells, and provides a solar cell and a preparation method thereof, the solar cell comprises a silicon substrate and a transparent conductive film, the transparent conductive film is provided with a periodic nanostructure array, and the solar cell also comprises a metal electrode arranged on the surface of the transparent conductive film, the metal electrode is prepared by adopting copper electrode slurry and a laser process. The periodic nanostructure array modified layer is prepared on the conductive thin film, so that the surface area and the conductivity of the transparent conductive thin film can be increased, the absorption and reflection of the transparent conductive thin film to light are improved, and the efficiency of the solar cell is improved; and the binding force of the electrode can be increased, and the durability and the stability of the solar cell are improved. According to the preparation method of the solar cell provided by the invention, the position of the copper electrode can be precisely processed, the problem of precision of current silk-screen printing is solved, the damage to the amorphous silicon layer can be avoided, the prepared copper electrode has a relatively large height-width ratio, and the light conversion efficiency can be effectively improved.

The utility model discloses a device with a flow guide wire bearing ring sheet and flow guide wires, which comprises a secondary air flow guide ring, the secondary air flow guide ring comprises a flow guide wire bearing ring sheet for bearing a plurality of flow guide wires and a plurality of flow guide wires, the flow guide wire bearing ring sheet is a sheet-shaped ring and has an inner diameter and an outer diameter, and the flow guide wires are arranged in the flow guide wire bearing ring sheet. And the flow guide wires are used for forming a secondary air flow channel. The utility model provides a simple, convenient, economical and feasible solution for simultaneously realizing high-recovery-rate collection and small-particle removal of powder products.

The invention relates to the technical field of photovoltaic cells, and provides a laser processing device, a method for preparing a metal electrode and a photovoltaic cell. According to the laser processing system, remelting and solidification are carried out while selective metallization is carried out, the internal stress of the electrode is released while the adhesive force is increased, and the porosity can be effectively reduced; in addition, the technological process can be simplified, the problem that the secondary machining position is difficult to calibrate is solved, and the machining efficiency is improved. According to the method for preparing the metal electrode, the position of the copper electrode can be precisely machined, the problem of precision of current silk-screen printing is solved, damage to the amorphous silicon layer can be avoided, the prepared copper electrode has the large height-width ratio, and the light conversion efficiency can be effectively improved.

The invention discloses a polishing powder, a polishing solution and a preparation method and application thereof. The polishing powder comprises cerium oxide A with the particle size D50 of 0.8-1.5 microns and cerium oxide B with the particle size D50 of 0.1-0.6 microns, the mass percent of the cerium oxide B is 10%-40%, and the polishing rate and the polishing surface quality of the polishing powder are jointly improved through mutual cooperation of the cerium oxide A with the large particle size and the cerium oxide B with the small particle size. The invention also provides a polishing solution and a preparation method thereof, and application of the polishing powder and the polishing solution.

The invention provides a fruit growth regulator and bacteriostatic preservative as well as a preparation method and application thereof, and belongs to the technical field of preservation, pomace is taken as a raw material, and pomace microfibrillated cellulose, pectin and seed oil containing phenolic substances are extracted through organic acid treatment, DES reagent auxiliary mechanical treatment, ethanol water treatment and other treatments; then carrying out hydroformylation modification on nano cellulose, grafting chitosan, and compounding with pectin to obtain dialdehyde microfibrillated cellulose-chitosan-pectin composite particles with pH response performance, and taking the dialdehyde microfibrillated cellulose-chitosan-pectin composite particles as a stabilizer of a Pickering emulsion; the green growth regulator solution is used as a continuous phase, the seed oil mixed Chinese herbal medicine extract is used as a dispersion phase, the controlled-release Pickering emulsion with growth regulation and bacteriostasis effects is prepared, the prepared emulsion is sprayed on berries to form a film layer, the growth process of the berries can be regulated, the fruit yield and quality are improved, and the quality of the berries is improved. And antibacterial substances can be slowly released for preservation when berries are picked and stored.

The utility model relates to the related technical field of food detection, and discloses a pulp sampler for food detection, which is characterized in that a placing cavity is arranged in a placing cylinder, a clamping device and a sampling device are arranged in the placing cavity in a sliding manner, the clamping device comprises a placing plate, a plurality of sliding grooves are formed in the upper surface of the placing plate in an annular array manner, and the sampling device is arranged in the placing cavity. Sliding blocks are slidably installed in the sliding grooves formed in the array, claw plates are fixedly installed on the upper surfaces of the sliding blocks, and spring ropes are connected to the lower ends of the sliding blocks arranged in the array. The cutting plate is slidably mounted on the surface of the side through groove, so that a regular and consistent opening can be cut in the surface of the orange, a standardized pulp sample can be obtained, the cutting plate can complete cutting of the upper layer surface of the orange through simple operation, and compared with manual peeling or cutting, the time is greatly saved, and the sampling efficiency is improved.

This utility model discloses a scale removal device for plate heat exchangers, relating to the technical field of plate heat exchangers. It includes a fixed clamping plate, a fixed guide rod fixedly connected to the lower right side of the clamping plate, several plates slidably connected to the upper side of the guide rod, and fixed plates fixedly connected to the upper and lower right ends of the plates. Telescopic rods are fixedly connected to the inner sides of both fixed plates, and lifting plates are fixedly connected to the ends of the two telescopic rods. Springs are sleeved on the surfaces of the telescopic rods. Scrapers are fixedly connected to the middle positions of both sides of the lifting plate, and trapezoidal frames are fixedly connected to the upper and lower ends of both sides of the lifting plate. A fixed brush is fixedly connected to the outer end of the trapezoidal frame away from the lifting plate. This utility model, by incorporating a fixed plate, telescopic rods, lifting plate, springs, scrapers, a fixed pipe, a second solenoid valve, a fixed brush, and a pressurizing pipe, avoids disassembling the plates, effectively reducing workload, and simultaneously effectively removing deposited scale.

The invention provides high-frequency wire surface polishing wire drawing equipment which is characterized in that the high-frequency wire surface polishing wire drawing equipment comprises a polishing assembly, the polishing assembly comprises a polishing assembly and a spraying structure, a stain removing assembly and a detection assembly are arranged on one side of the polishing assembly, and the detection assembly is arranged between the stain removing assembly and the polishing assembly; spraying structures are arranged on the two sides of the polishing assembly, the high-frequency wire penetrates through the two spraying structures at the same time, the spraying structures are used for spraying lubricating liquid to the high-frequency wire before and after polishing and forming a thin film on the surface of the high-frequency wire, and the detection assembly detects the surface flatness of the high-frequency wire through an interference method. A marking unit is arranged in the detection assembly, the marking unit is used for marking the high-frequency wire which is detected to be unqualified, cleaning liquid is contained in the stain removing assembly, the detected high-frequency wire is immersed in the cleaning liquid, and the cleaning liquid is used for removing lubricating liquid on the surface of the high-frequency wire.

The utility model discloses an evaporator for amino acid production belongs to amino acid production field, including evaporator casing, install first evaporating unit - third evaporating unit in evaporating inner chamber, be provided with first cavity between first evaporating unit and second evaporating unit, be provided with second cavity between second evaporating unit and third evaporating unit, form third cavity between the bottom of third evaporating unit and the bottom inner wall of evaporator casing, install first - third liquid spray unit in evaporating inner chamber, be provided with first baffle in first cavity, open first hole in the central position of first baffle, install first inner tube in first hole, be provided with second baffle in second cavity, open second hole in the central position of second baffle, install second inner tube in second hole. The utility model can reasonably improve energy efficiency and avoid broken amino acid internal molecular structure, and prevent amino acid acidic side chain in removing acid and be removed.

The invention discloses a continuous aluminum rod cutting and conveying device, which relates to the technical field of aluminum material processing, and comprises a workbench, wherein a cutting assembly is arranged on the workbench, wherein the cutting assembly comprises two driving sources arranged on the workbench, wherein one driving source can drive a cutting machine in the cutting assembly to be lifted and lowered, and a telescopic frame is arranged on one side of the workbench, wherein the copper rod is cut by the cutting assembly, and at the same time, through the cooperation of the clamping assembly and the triggering assembly, the uncut part of the copper rod can be moved toward the to-be-cut area again after the copper rod is cut, and the copper rod can be clamped again after the copper rod is moved, and at the same time, the distance between the telescopic frame and the workbench can be adjusted, so that the cut length of the copper rod can be regulated, and the cut area of ​​the copper rod after cutting can be polished to prevent the copper rod from being subjected to the burr removal operation again.

The invention discloses a leaf fiber filtering and separating device for food processing, and relates to the technical field of food processing. The device comprises a partition plate, the two sides of a rolling assembly are fixedly connected with a transmission assembly, an anti-winding assembly is in transmission connection with the rolling assembly through the transmission assembly, the two ends of a connecting column are fixedly connected with the inner wall of a shell, and the inner wall of a circular ring is rotationally connected with the outer surface of the connecting column; the two ends of the bearing rod are fixedly connected with the sides, close to each other, of the two circular rings respectively, a communicating vessel is formed between the partition plate and the shell, water is contained in the shell, the communicating vessel enables the liquid level height of the inclined inner wall of the shell to be equal all the time, and the bearing rod carrying fibers is close to the bottom of the inner wall of the shell and soaked in water, so that mesophyll and meat remaining on the surfaces of the fibers are separated. Mesophyll slides into the side, away from the bearing rod, of the partition plate along the inclined inner wall under the influence of the gravity of the mesophyll, separation and filtration of the mesophyll and limiting are completed, pure fibers are obtained, and mesophyll residues are avoided.

The utility model provides an exhaust system for a laboratory, which comprises a suction unit, a waste gas treatment unit and a waste gas discharge unit, and the suction unit is used for capturing waste gas; the waste gas treatment unit comprises a dust removal mechanism, a spray tower, a drying tower and a carbon adsorption box which are connected in sequence, and the dust removal mechanism is connected with the suction unit; the waste gas discharge unit is connected with the carbon adsorption box and is used for discharging waste gas to the outside; the suction unit comprises a first pipeline, a second pipeline and a main pipeline, the first pipeline is used for being connected with an exhaust outlet of the synthesis experiment cabinet, the second pipeline is connected with a fixed exhaust hood and a universal exhaust hood which are located above the detection experiment operation table, the air inlet end of the main pipeline is connected with the first pipeline and the second pipeline, and the air outlet end of the main pipeline is connected with the dust removal mechanism. The exhaust system for the laboratory, provided by the utility model, can effectively remove pollutants such as smoke dust, flammable and explosive substances, organic non-methane hydrocarbons and the like in waste gas, so that the possibility of safety accidents is reduced, and the safety of the surrounding environment and personnel is guaranteed.

The invention provides a sodium nitroprusside injection and a preparation method thereof. The preparation method comprises the following steps: S1, taking part of water for injection into a preparation tank, filling nitrogen, and stirring to obtain pretreated water for injection; s2, controlling illumination, adding sodium nitroprusside into the pretreated water for injection while stirring, then stirring, adding the residual water for injection to the total preparation amount, and stirring again to obtain a sodium nitroprusside liquid medicine; s3, the sodium nitroprusside liquid medicine is filtered and filled, and the sodium nitroprusside injection is obtained. According to the preparation method, firstly, the oxygen content in the water for injection can be greatly reduced through proper stirring process conditions, the illuminance and temperature of the environment are controlled when sodium nitroprusside is added, and sodium nitroprusside can be effectively prevented from being decomposed and is promoted to be dissolved through a specific multiple stirring synergistic effect; impurities are effectively removed under proper filtering conditions, and finally, decomposition of sodium nitroprusside is effectively avoided by controlling reasonable filling conditions, so that the stability is improved.

The invention discloses a lithium adsorbent as well as a preparation method and application thereof, belongs to the technical field of lithium extraction from salt lakes, and overcomes the common defects of low adsorption efficiency and short cycle service life of lithium adsorbents in the prior art. The raw materials of the lithium adsorbent comprise a lithium adsorbent precursor, a binder and a block polyether polymer, the block polyether polymer is a triblock copolymer of polyethylene glycol and polypropylene glycol; the average molecular weight of the block polyether polymer is 8000 to 100000; the molar ratio of repetitive units-OCH2CH2-to-OCH (CH3) CH2-in the block polyether polymer is (7: 3)-(3: 7). The lithium adsorbent disclosed by the invention has relatively high lithium extraction rate and wear resistance.

The present invention relates to the field of spectral data processing technology, and in particular to a highway tunnel detection system for highway engineering. The system first obtains the mineral alteration response degree at the wavelength corresponding to each band of mixed spectral data, obtains the reflectivity correction value at the wavelength corresponding to other bands in the neighborhood of each band, obtains the average drift correction degree of the wavelength interval corresponding to any two adjacent reflectivity maximum points, and then further obtains the upper envelope of the mixed spectral data, and finally performs mineral alteration anomaly detection on the mixed spectral data after the envelope removal result, and obtains the location of defects in the tunnel. The present invention can ensure that the preprocessing of the highway tunnel spectrum data is more reliable, avoid the loss of some key information, and further improve the accuracy of subsequent highway tunnel detection.

The utility model provides a decentralized sewage treatment system suitable for northern rural areas, which belongs to the technical field of sewage treatment, and adopts the technical scheme that the decentralized sewage treatment system comprises a three-grid excrement regulating reservoir and a soil infiltration system which are buried underground, one side of the three-grid excrement regulating reservoir is connected with a biodegradation tank through a pipeline, the biodegradation tank is also buried underground, and the soil infiltration system is connected with the three-grid excrement regulating reservoir through a pipeline. A water distribution pipe is arranged on one side of the biodegradation tank, one end of the water distribution pipe penetrates through the bottom of the soil infiltration system, an isolation layer is arranged below the soil infiltration system, and the water distribution pipe is located between the soil infiltration system and the isolation layer; according to the sewage treatment system, direct influence of a low-temperature environment on operation of the system is avoided through the three-grid excrement regulating tank and the soil percolation system which are buried underground, the problem that traditional decentralized sewage treatment is low in adaptability in low-temperature areas is solved, the possibility of polluting underground water can be eradicated through the arrangement of the isolation layer, and the reliability of the sewage treatment system is improved.

The present invention provides a toothbrush for promoting dental plaque removal and a method for manufacturing the same. The toothbrush for promoting dental plaque removal comprises: a head on which elements for cleaning the toothbrush are arranged; a first electrode located on the head; a second electrode located on the head, separated from the first electrode by a preset interval and grounded; and a voltage supply unit for superimposing an alternating current (AC) voltage and a direct current (DC) voltage to apply both the AC voltage and the DC voltage to the first electrode.

The utility model relates to sugarcane impurity removal equipment convenient to adjust, and belongs to the technical field of sugarcane impurity removal equipment. The sugarcane impurity removal equipment comprises a workbench, a conveying belt is arranged at the upper end of the workbench, square plates are fixedly installed on the two sides of the upper end of the workbench, and an installation pipe is fixedly installed in the middle of one end of each square plate; a moving rod capable of moving up and down is mounted in the mounting pipe through a driving assembly, a limiting plate is fixedly mounted at one end of the moving rod, a conveying plate is fixedly mounted on one side of the workbench, a mounting plate provided with a fan is fixedly mounted at one end of the conveying plate, an air conveying pipe is arranged at the output end of the fan, and a wind power adjusting assembly is mounted in the air conveying pipe; impurities of sugarcanes with different thicknesses are removed by adjusting the wind power, the situation that thin sugarcane sections are removed along with sugarcane leaves due to large wind power is avoided, the impurity removal effect is improved, the sugarcanes with different sizes can be limited by adjusting the distance between the limiting plates, and the situations that the sugarcanes incline during transportation, notches are bent, and the cutting effect is reduced are prevented.

The invention discloses a mowing device and a mowing method for a garden greening project, which relate to the technical field of mowing, and include a vehicle frame and a sawtooth disk, wherein a rotating shaft is arranged on the upper part of the sawtooth disk, a primary crushing chamber is formed on the upper part of the sawtooth disk, a secondary crushing chamber and a discharging chamber are arranged inside the sawtooth disk, and the discharging chamber is connected to a grass collecting box; a primary crushing knife and a secondary crushing knife are arranged on the rotating shaft; a feeding roller is arranged on the vehicle frame at the front side of the sawtooth disk, a rake tooth disk is arranged at the bottom of the feeding roller, a feeding pipe is arranged on the outer side of the feeding roller, a lower opening and an upper opening are arranged on the feeding pipe, a dust suction chamber and a hot air chamber are arranged inside the feeding roller, and a dust collector is arranged on the rear side of the feeding roller; by arranging a primary crushing chamber on the upper part of the sawtooth disk, and arranging a secondary crushing chamber and a discharging chamber inside the sawtooth disk, the sawtooth disk can grade and crush the cut grass stems while mowing the grass, and by arranging a feeding roller on the front side of the sawtooth disk, firstly, the grass stems can be pulled to improve the cutting force and cutting effect, and secondly, the cut grass stems can be transported, dusted and dried, and the overall structure is compact.

The utility model discloses an air filtering and disinfecting structure for air-dried beef processing, and belongs to the technical field of beef processing. An air filtration and disinfection structure for air-dried beef processing comprises an air dryer and an air supply outlet, the air supply outlet is formed in the rear side of the air dryer, a fan is installed in the air supply outlet, a square frame is installed on the rear side of the inner wall of the air dryer and communicates with the air supply outlet, and a filtration and disinfection mechanism is arranged in the square frame; the filtering and disinfecting mechanism comprises a first filter screen, a second filter screen, a plasma generator, an activated carbon filter screen and an ultraviolet germicidal lamp, the first filter screen is mounted on the inner wall of the square frame, the second filter screen is mounted on the inner wall of the square frame and located on the front side of the first filter screen, and the plasma generator is mounted on the front side of the square frame. Through cooperative use of the mechanisms, dust, bacteria, viruses and other pollutants in the air can be removed, the quality of the air introduced into the air dryer is ensured, and food in the air dryer is prevented from being polluted.

The utility model relates to the technical field of plastic color master batch screening, specifically to a plastic color master batch screening and impurity removing device, including screening bed, the inside fixed connection of screening bed has the filter screen, the inside of screening bed is provided with extrusion device, and the extrusion device includes support frame, and the support frame sets up the top of screening bed, and the upper surface of support frame is opened to have guide hole, and the inside slide connection of guide hole has guide rod, and the bottom fixed connection of guide rod has the pressing plate, and the inside slide connection of pressing plate and screening bed, and the top fixed connection of guide rod has the connecting strip, and one side fixed connection of connecting strip has the connecting block, and the surface of support frame is provided with drive assembly. The utility model discloses, through setting up extrusion device, can effectively conveniently worker to the material of caking carries on extruding, avoided the worker to remove the caking plastic color master batch, and then improved the screening rate of impurity removing device.

The invention provides a manufacturing method of a semiconductor structure, relates to the technical field of semiconductors, and is used for solving the technical problem that an active region is easy to incline. The manufacturing method of the semiconductor structure comprises the following steps: forming a sacrificial structure on a substrate; the sacrificial structure and the substrate are etched, a plurality of active areas arranged at intervals are formed in the substrate, etching by-products exist between the adjacent active areas, and bosses correspondingly arranged on the active areas are formed on the sacrificial structure; etching by-products are removed through wet etching, partial areas, away from the substrate, of the adjacent bosses make contact and adhere to each other, and the active areas correspondingly connected with the bosses are spaced and are in an inclined state; and removing the bosses, releasing the inclined state of each active region, and recovering to be upright. The active areas are arranged at intervals, diffusion of reaction gas and reaction with the bosses are facilitated, the bosses are completely removed, the situation that the active areas are still kept in an inclined state due to adhesion of the remaining bosses is avoided, and inclination of the active areas is avoided.

A coating protection method comprises providing a substrate, wherein the substrate comprises a main body and a coating arranged on the surface of the main body; rubbing the surface of the substrate provided with the coating so that the substrate carries positive charge; coating the surface of the substrate provided with the coating with a protective liquid, wherein the protective liquid contains an anionic surfactant, wherein the positive charge and the anionic surfactant attract each other so that the protective liquid is adsorbed on the surface of the substrate and covers the coating; and allowing the substrate coated with the protective liquid to stand so that the protective liquid forms a protective layer covering the surface of the coating to protect the coating.

The invention discloses a cashier system capable of collecting consumption data, and relates to the technical field of consumption data collection. The switching display unit is used for acquiring basic data of the cashier system, the cashier system comprises a plurality of clients, and the cashier system capable of acquiring consumption data can acquire consumption data of users, perform dual processing on the data and display the consumption data with a single user as a unit in one folder, so that the consumption data of the users can be acquired. And the other folder displays the consumption data taking the commodity type as the unit, so that not only can quick positioning be performed during commodity traceability, but also the commodity information can be more organized during checking, the payment time of the cashier system can be reduced through a mechanism that the commodity information is paired in a client kernel, the convenience of the cashier system is provided, and the user experience is improved. The convenience of removing the commodities in the queuing stage can be well avoided, the problem of commodity omission can be effectively avoided in cooperation with analysis of the position distribution of the commodities, and the intelligent degree of the cashier system is effectively enhanced.

The invention relates to the technical field of water treatment, and discloses an electrochemical redox reactor for treating organic pollutants, which solves the problems of reduction of nitrate nitrogen and degradation of toxic and harmful pollutants, removal of macromolecular refractory organic matter, and uneven distribution of tiny bubbles. The reactor comprises a box body, the bottom end of which is fixedly connected with a water inlet pipe, the top end of which is fixedly connected with a water outlet pipe and an exhaust pipe, an electrochemical reaction mechanism is fixedly connected with the box body, a wire column is arranged on the electrochemical reaction mechanism, and the end of the wire column is arranged at the top of the box body, a first air inlet pipe is rotatably connected with the bottom end of the box body, a driving unit matched with the first air inlet pipe is installed on the box body, a plurality of branch pipes located in the box body are fixedly connected with the first air inlet pipe, an aeration plate located below the electrochemical reaction mechanism is arranged above the branch pipe, and a second air inlet pipe is fixedly connected with the bottom of the aeration plate; the position of the aeration plate is adjusted in multiple directions so that the tiny bubbles are evenly distributed in the water.