912results about How to "Realize self-cleaning" patented technology

The invention relates to the ventilation system field, in particular to an efficient automatic dust-removing and intelligent ventilation system and an automatic dust-removing method. The system comprises an intelligent energy-saving ventilation system housing component and a fan, wherein the intelligent energy-saving ventilation system housing component comprises a dual duct, a dust-discharging duct, a throttle actuating mechanism, a dust screen, a temperature and humidity sensor and a distributed pressure sensor, wherein the temperature and humidity sensor and the distributed pressure sensor are connected with a control system, and the control system drives the throttle actuating mechanism to realize time-sharing and smooth transition of the dual duct and the dust-discharging duct. The beneficial effects of the invention are as follows: the fans of the air feeder unit can be used for several purposes such as air supply and dust removing, thus reducing the equipment cost; the self-cleaning of the filtering screen can be realized, thus prolonging the service life of the filtering screen, reducing replacement frequency and lowering maintenance cost; and by turning on / off the automatic dust-removing and intelligent ventilation system, the normal operation of the devices in an equipment room can be ensured.

The invention belongs to the technical field of preparing the surface of a composite structure, and in particular relates to a method for preparing super-hydrophobic antireflective silicon surface with a micron and nanometer composite structure. The method comprises the following steps: cleaning a silicon chip; preparing a micron-level silicon island and a gridding structure on the surface of the silicon chip; carrying out catalytic etching taking silver or aurum nanoparticles as blockage; obtaining the surface of the micron and nanometer composite structure; and carrying out chemical modification of the surface of the composite structure. A static contact angle between the super-hydrophobic antireflective material surface prepared by the method and water is more than 150 degrees, and a static rolling angle of water is less than 3 degrees. The surface has superior antireflective performance, and in particular, the light reflectivity within the wavelength range between 800 and 1,100 nm is less than 3 percent. With application of the method, the super-hydrophobic antireflective silicon surface of the micron and nanometer composite structure can be produced on scale, can be widely applied to a solar cell, a microfluidic chip, a photoelectric device, and the like, and has good industrial application prospect.

The invention discloses a flocculation washing machine. The flocculation washing machine comprises an outer barrel, a flocculation unit and a filtering unit which are circularly communicated in a sequence through pipelines. The washing machine further comprises an air pump which is respectively communicated with the flocculation unit and the filtering unit. According to the flocculation washing machine, air generated by the air pump is conveyed into a flocculation container through the same air pump so as to generate a mass of bubbles in the water into the flocculation container, thus the water fully flow to enable fully mixing of a flocculant and washed water to achieve flocculation reaction; in addition, the air exhausted by the air pump can be conveyed into a filtering container during washing a filtering unit to generate bubbles to drive water in the filtering container to fully flow as well as generating an instantaneous impact force to act on the surface of a filtering screen, so as to separate dirt attached on the surface of the filtering screen, and as a result, the filtering effect of the filtering screen can be improved. The flocculation washing machine is high in automation degree and simple in structure and saves the production cost.

The invention relates to a novel electro-catalytic composite membrane material and a preparation method thereof. The novel electro-catalytic composite membrane material is characterized in that the material can couple electro-catalytic technology and membrane separation technology. The preparation method comprises the following steps: taking a microporous separation membrane with electric conductivity, namely a carbon membrane, as a substrate, adopting a sol-gel method, mixing a metallic compound, water, a solvent, a catalyst, other additives and the like to be configured into a precursor solution, and obtaining an electro-catalytic composite membrane by sol ageing, film coating, drying and heat treatment; and preparing the composite membrane with superior performances by pretreating a substrate and controlling the mixture ratio of raw materials, the soakage time, the pulling speed, the sintering temperature and the like. The novel electro-catalytic composite membrane material takes the electro-catalytic composite membrane as an anode and a metallic material as a cathode to treat wastewater and realizes the reinforcement of the membrane separation process and the self-cleaning function under the action of a low-voltage electric field. The electro-catalytic membrane material has the advantages of low energy consumption, high separation efficiency, strong antifouling property and the like, and can be widely used for treating and recycling heavily polluted wastewater such as oily wastewater, dye wastewater, paper-making wastewater and the like. The preparation method has the advantages of simple preparation process, cheap equipment, easily-obtained raw materials, convenient operation and suitability for industrialized implementation.

The invention provides a back-flush-type preposed water filter. The back-flush-type preposed water filter comprises a water inlet, a water outlet, a shell, a filter screen and a water flow direction conversion device, wherein a filter cavity body is defined by the shell, and water flowing from the water inlet passes through the filter cavity body, and then flows out of the water outlet; the filter screen is arranged in the shell and separates the filter cavity body into an internal filter cavity body and an external filter cavity body, and water flows between the internal filter cavity body and the external filter cavity body through the filter screen; the water flow direction conversion device enables water flow to be converted between normal filter operation and back flush operation; when the water flow direction conversion device is converted to the normal filter operation, water flowing from the water inlet is filtered by the filter screen from the internal filter cavity body, enters the external filter cavity body, and flows out of the water outlet; when the water flow direction conversion device is converted to the back flush operation, water flowing from the water inlet flows to the internal filter cavity body through the filter screen from the external filter cavity body, and flushes impurities adhering to the filter screen, thereby flushing the filter screen.

The invention discloses a beta-FeOOH nanocrystal-loaded photocatalytic composite nanofiltration membrane and a preparation method thereof. The photocatalytic composite nanofiltration membrane is prepared by performing codeposition on dopamine and polyethyleneimine on a porous supporting membrane to form a crosslinking nanofiltration membrane with a separating surface layer first and then loading beta-FeOOH nanocrystals on the separating surface layer. The loaded beta-FeOOH nanocrystals can promote photocatalytic oxidation reaction in the presence of hydrogen peroxide to degrade organic pollutants in wastewater or attached to the surface of the composite membrane, so that not only is achievement of the completely-innocent treatment of pollutant-containing wastewater facilitated, but also the pollution of the membrane surface can be reduced to achieve self cleaning of the membrane surface, and thus the separating efficiency of the composite nanofiltration membrane is improved and the service life of the composite nanofiltration membrane is prolonged.

The invention relates to a milk making method of a soybean milk machine. The milk making method at least comprises the steps that when the selected milk making amount is lower than 0.8V, milk making is completed at a time in smashing cavity by using milk liquid; when the selected milk making amount is higher than 0.8V, blending needs to be conducted at least once to complete milk making, wherein V is the volume of the smashing cavity. Compared with the prior art, the method improves the blending effect of the milk liquid / paste, caking or layering does not happen, the quality of the milk liquid / paste is improved, and the taste is good; meanwhile, the problems are solved that according to soybean milk machines in the prior art, large-volume milk making and self-cleaning cannot be achieved.

The invention provides a hybrid film containing titanium dioxide / poly-dopamine functional particles. The hybrid film comprises a film substrate and the titanium dioxide / poly-dopamine functional particles doped in the film matrix, wherein each titanium dioxide / poly-dopamine functional particle adopts a core-shell structure taking a poly-dopamine particle as a core and a titanium dioxide nano-particle layer as a shell. The invention further provides a preparation method of the hybrid film. The preparation method comprises the following steps: first, preparing the titanium dioxide / poly-dopamine functional particles, doping the titanium dioxide / poly-dopamine functional particles into a polymer matrix, and preparing the hybrid film according to a phase inversion process. The titanium dioxide / poly-dopamine functional particles provided by the invention have high photocatalytic activity; poly-dopamine can perform chelating interaction with titanium dioxide, and can serve a free radical quencher to effectively protect the polymer matrix during a UV illumination process; the functional particles are stable in overall structure and have high hydrophilicity. The prepared hybrid film has good separation performance, self-cleaning property and property stability.

The invention provides a method for cleaning a solar streetlight photovoltaic panel. When a photovoltaic panel (4) is cleaned each day, control signals are outputted to the photovoltaic panel (4) and a water sprayer (8) by a self-cleaning controller (11); the photovoltaic panel (4) is rotated with a circle center thereof as an axis under the drive of wind power; the water sprayer (8) is driven to spray water at 360 degrees from the circle center of the photovoltaic panel (4) to the circumference of the photovoltaic panel (4) by a streetlight device power system (10); during the rotation, an upper surface of the photovoltaic panel (4) is contacted with a brusher (9); the brusher (9) is used for brushing dust with the help of water, and then the brushed dust is discharged along the water from a sewer (5); and the photovoltaic panel (4) is rotated circularly so as to finish cleaning.

The invention provides an online gas-liquid separation device for an underwater pipeline, and applies to efficient gas separation of well flow of an underwater production system. The gas-liquid separation device realizes online installation and operation of the pipeline and has the characteristics of simplifying of oil and gas gathering and transferring processes, reduction of gathering and transferring energy consumption and compact structure; a uniform gas-liquid mixing device adopts layered screw blades in opposite rotating directions to crush big bubbles to form uniform gas-liquid mixing flow, so that the gas-liquid ratio adaption range of the device is broad; a first-stage axial flow device adopts a single vertical cylinder to implement first-stage vertical high-speed swirling flow gas-liquid separation to remove most liquid phase, a second-stage axial flow device adopts double horizontal cylinders to implement second-stage horizontal layered rotating flow gas-liquid separation to remove the residual liquid flow, and efficient separation of the two-phase well flow is realized; a scrubbing balancer adopts double vertical cylinders to realize buffer pressure stabilization and complete separation of the gas-phase well flow, and a cleaning pipe performs cleaning operation automatically; a gas-liquid separation control system implements remote automatic control so as to control the well flow of the submarine pipeline and realize dynamic balance of pressure of the scrubbing balancer.

This invention relates to a low radiation self-cleaning complex function glass. This glass has trilamellar membrane structure, membranous layer from glass outward in turns is : SiO2 transition layer, ion adulterated SnO2 layer, ion adulterated SiO2 - TiO2 layer. The on-line preparation method is sol-gel method, combine with atomizing sedimentation, utilize thermal decomposition and coagulation process of collosol at 450 to 550 deg to proceed heat sedimentation, in turns form membranous layer on the on-line glass plate surface. This invention through controlling the coating material concentration, dopant ion variety, thermal decomposition temperature and membranous layer thickness bring low radiation to the glass coated this membrane, execute stable uniwafer low emissivity glass, reduce cost, and realize reprocessing treatment of low radiation steeling and hot bending. This invention applies to common building and shield glass.

The invention relates to an air conditioner self-cleaning method and system and air conditioner. The method comprises the steps of detecting the temperature of an inner unit coil in the frosting state, wherein the inner unit coiler is provided with a frost layer; judging whether the temperature of the inner unit coil meets the preset defrosting condition or not; rising the temperature of the innerunit coil to make the frost layer become high temperature water vapor if the temperature of the inner unit coil meets the preset defrosting condition; judging whether an inner fan meets the preset inner fan reversal condition or not; controlling the inner fan to reverse according to the preset first rotation speed if the inner fan meets the preset inner fan reversal condition; judging whether theinner fan meets the preset reversal ending condition or not; and controlling the inner fan to be switched from reverse rotation to forward rotation if the inner fan meets the preset reversal ending condition. According to the technical scheme, the manners of reverse rotation and forward rotation of the inner fan are used, a reverse flow field or a turbulent flow field enables more water vapor / steam generated in an indoor unit in the defrosting stage to be stayed in a unit body of the indoor unit for a certain time, all-round cleaning is carried out, and the effect is better.

The invention discloses a preparation method of a multifunctional oil-water separation material based on graphene oxide nanobelts, wherein the preparation method includes following steps: (1) cutting functionalized graphene oxide nanobelts in an oxidizing manner; and (2) preparing a graphene oxide nanobelt porous thin film through a vacuum-suction filtering method. The porous screen multifunctional oil-water separation thin film is 38 + / - 2 cm<2> in area and is 5-200 nm in pore size. The multifunctional oil-water separation material screen film can simultaneously perform oil-water separation and heavy metal adsorption to a mixture containing oil and water and heavy metal ions and the like components which are insoluble to each other. The integrated water-purifying renewable film has very important significance on protecting environment and maintaining ecologic system balance.

The invention discloses a flocculation filtration cycling water device of a washing machine and the washing machine. A water containing barrel, a flocculation container and a filtering container are sequentially cyclically communicated through pipelines; flocculating agents are thrown into the flocculation container communicated with the water containing barrel, and the water containing barrel drains water to the flocculation container for flocculation treatment; the filtering container is communicated with the flocculation container and the water containing barrel, water after flocculation treatment in the flocculation container is filtered and then drained into the water containing barrel for recycling. The flocculation container and the filtering container are communicated with an external drainage part through a shared drainage control valve; the drainage control valve is of a three-way valve structure with two water inlets and one water outlet and on-off of the two water inlets controlled integrally; the two water inlets are communicated with the flocculation container and the filtering container respectively; the drainage control valve is internally provided with an isolation structure for preventing communication of the two water inlets. Flocculation and filtered sewage drainage are controlled by the same drainage control valve, the structure is simple, the cost is reduced, and the occupied space is reduced.

The invention discloses an air conditioner and an air conditioning self-cleaning system. According to the invention, spraying devices are adopted to spray cleaning solution on blades of an air conditioning evaporator, and then the operating mode of a press is converted to enable the cleaning solution to refrigerate and frost on the blades of the air conditioning evaporator and finally heat and defrost after frosting is carried out to a certain degree, so that the air conditioner can take away more floating dust and dirt on the blades of the air conditioning evaporator. That is, the air conditioner is simple in working principle; and compared with the traditional air conditioner, the air conditioner, disclosed by the invention, can better realize self cleaning with the spraying devices additionally provided to effectively solve the problem in the prior art that the air conditioning evaporator is difficult to clean.

The invention discloses a flocculating and water-saving washing machine and a control method. The washing machine comprises a water holding barrel, a flocculating container and a filtering container, wherein the water holding barrel is respectively communicated with the flocculating container and the filtering container; the flocculating container is provided with a stirring mechanism for stirring to accelerate a flocculant to dissolve, and a washing mechanism for washing the inner wall of the flocculating container; a rotatable filtering mechanism and a filtering self-cleaning mechanism utilizing inflow water flow to spray and clean the filtering mechanism are arranged in the filtering container; the filtering container is provided with a filtering water outlet communicated with the water holding barrel and a drain outlet for discharging washing water; the flocculating container is communicated with the filtering container; water washing the flocculating container is discharged into the filtering container and is discharged through the drain outlet of the filtering container. Washing water is sequentially discharged into the flocculating container and the filtering container so as to be flocculated and recycled after the washing stage is finished and / or between washing stages. The flocculating and water-saving washing machine is simple in structure, high in water flocculating efficiency, and better in self-cleaning effect.

The present invention discloses a self-cleaning hydrophilic coating liquid, which is prepared from the following components by weight: 1 to 5% of orthosilicate, 0.1 to 5% of titanate, 0.1 to 5% of polyether siloxane, 0.01 to 0.5% of a catalyst and balance of an organic solvent, the orthosilicate is tetramethyl orthosilicate ortetraethyl orthosilicate, the titanate is tetrabutyl titanate or tetraethyl titanate, the polyether siloxane is polyether trimethoxy silane, when the substrate surface is scoured by water, the water can slide down automatically, the substrate also has superior hydrophilicity without ultraviolet radiation, the substrate surface can be cleaned by nature rain effect or a small amount of water for washing, the self-cleaning hydrophilic coating liquid can be can be cured naturally at room temperature without high temperature and other film forming conditions, energy is saved, and scratch resistance, peel resistance and other mechanical strength the coated film layer are greatly increased. The self-cleaning hydrophilic coating liquid is applicable to engineering glass, photovoltaic glass, stone materials, metal surfaces, automotive exterior mirrors and glasses.

The invention provides a self-cleaning device of an automotive air-conditioning system and a cleaning method of the self-cleaning device and belongs to the technical field of automotive air conditioning. The self-cleaning device comprises an ultraviolet lamp, a cleanser spraying device, an ozone generator / negative ion generator, an air blower and a control module, wherein the ultraviolet lamp, the cleanser spraying device and the ozone generator / negative ion generator are fixed to an air conditioning cabinet assembly of the automotive air-conditioning system in an integrated mode, the air blower is arranged in the air conditioning cabinet assembly and is used for introducing airflow into the air conditioning cabinet assembly, and the control module is used for controlling the ultraviolet lamp, the cleanser spraying device and the ozone generator / negative ion generator. According to the automotive air-conditioning system integrated with the self-cleaning device, the self-cleaning function can be achieved conveniently and efficiently at low cost.

The invention relates to a ceramic glaze, in particular to a nano phase separating self-cleaning glaze of ceramic out-wall bricks. The material composition (wt percent) is as follows: 26 to 32 percent of glaze quartz, 0 to 3 percent of glaze feldspars, 3 to 4 percent of Suzhou clays, 30 to 46 percent of high titanium blast furnace slag and 20 to 38 percent of FT818 frits; the chemical composition (wt percent) is as follows: SiO2: 54.22 to 63.16 percent, Al2O3: 8.22 to 11.18 percent, Fe2O3: 0.24 to 0.36 percent, TiO2: 3.16 to 4.69 percent, CaO: 10.11 to 13.24 percent, MgO: 4.28 to 5.90 percent, ZnO: 3.30 to 5.61 percent, BaO: 0.20 to 0.40 percent, K2O: 1.41 to 2.35 percent, Na2O: 0.52 to 0.97 percent, Li2O: 0.20 to 0.39 percent, B2O3: 0.45 to 1.76 percent , and ZrO2: 0.41 to 1.72 percent. After the glaze of is fired, nanometer protuberances and nanometer TiO2 clusters form on the surface of glaze, and the ceramic glaze is good in super-hydrophilic property, high in photocatalysis efficiency, good in anti-soil effect of the glaze surface and has self-cleaning function; and especially the high titanium blast furnace slag is taken as the main material, thus realizing waste utilization and decreasing costs.

The invention discloses a method for realizing self-cleaning by performing superhydrophobic modification treatment on the surface of a substrate, which comprises the following steps: 1) cleaning and drying an inorganic substrate, and placing the inorganic substrate at room temperature; 2) radiating the inorganic substrate treated by the step 1 with ultraviolet; and 3) preparing a superhydrophobic coating on the inorganic substrate to obtain a self-cleaning surface with superhydrophobic performance. When the substrate is a polymer substrate, a silane buffering layer is formed on the polymer substrate first before the step 2 and the step 3 are executed. The contact angle of water subjected to distillation for three times with the substrate surface prepared by the invention can reach 150 DEG, and the superhydrophobic coating can prevent pollution of impurities effectively and thus realize self-cleaning. The superhydrophobic coating has high stability.

The invention discloses a washing machine flocculation device with a self-cleaning function and a washing machine. The flocculation device comprises a flocculation container and a stirring mechanism, and further comprises a washing mechanism used for flushing the inner wall of the flocculation container. The washing mechanism comprises a water throwing impeller and a drive motor used for driving the water throwing impeller to rotate. Water which inflows is thrown to the inner wall of the flocculation container through the water throwing impeller to wash the inner wall of the flocculation container. The stirring mechanism comprises a stirring motor arranged on the outer portion of the flocculation container, a stirring shaft extending into the flocculation container, and a stirring impeller arranged on the stirring shaft. The washing machine comprises a washing machine outer drum. Circulating communication is achieved in the sequence of the outer drum, the flocculation device, a filtering device and the outer drum again through pipelines. Due to the adoption of a stirring structure which is of a design completely opposite to that of an existing stirring impeller, mixing of flocculant and washing wastewater can be accelerated, floccules can be prevented from being scattered, and the structure is simple; the flocculation device can be cleaned by itself, the automation degree is improved, the structure is simple, and the production cost can be saved.

The invention discloses a system for deep treatment of coking wastewater by means of catalytic ozonation-ceramic membrane filtration, mainly consisting of an ozone generator, an ozone oxidation reactor, a booster pump, a ceramic membrane component, a gas-liquid separator, a tail gas absorbing device, a wastewater reflowing pump, a catalyst reflowing pump, a catalyst adding pump, a catalyst outflowing groove, a catalyst adding groove and corresponding pipe fittings, valves and instruments. According to the system, the application of a powder catalyst in a dynamic reactor can be realized due tothe combination of the catalytic ozonation and the ceramic membrane separation; the ozonation and the catalytic ozonation can be guaranteed to be carried out in a single reactor in a segmental way due to the convection current of the reflowing wastewater and the catalyst slurry and the impact of upcurrent; the mass transfer resistance when the ozonation and the catalytic ozonation are independently used can be reduced; the use ratio of hydroxyl free radical and the removal rate of organic matters can be improved; the aims, such as the COD (chemical oxygen demand), the chroma and the turbidityof the deeply-treated coking wastewater, can be achieved; and the problems that the activity is suddenly reduced when the powder catalyst is formed into particulates, the running needs to be suspended when the mass transfer resistance is increased due to the use of the particulate catalyst and the particulate catalyst is changed and the like can be solved.

The invention relates to the field of feed production equipment and particularly relates to plant straw pellet feed production equipment which comprises a feeding system, a stirring and crushing system, a primary filtration system, a secondary filtration system, a forming system and a supporting body, wherein the feeding system comprises a straw conveying port for conveying straw raw materials and an auxiliary material conveying port for conveying auxiliary materials, and the straw conveying port and the auxiliary material conveying port are connected with the stirring and crushing system; the stirring and crushing system is used for crushing the straw raw materials; the primary filtration system is connected with the stirring and crushing system; the secondary filtration system is connected with the primary filtration system; the forming system is connected with the secondary filtration system; and the supporting body is positioned below the forming system. By virtue of integrated treatment of crushing, mixing, filtration and pellet forming, the production steps of the plant straw pellet feed are greatly optimized, and the production efficiency is improved.

The invention discloses a self-cleaning type road sign for a building site. The self-cleaning type road sign for the building site comprises an upright post and a sign body fixedly connected to the side wall of the upright post through a fixing plate, wherein a device cavity is formed in the side wall of the upright post, an impeller is rotatably connected to the side wall of the upper end of theupright post through a rotating shaft, and the rotating shaft penetrates into the device cavity and is fixedly connected with a permanent magnet. According to the self-cleaning type road sign for thebuilding site, the impeller, the permanent magnet, a stretchable air bag, an air outlet mechanism, a spiral coil and indicator lamp strips are arranged, so that the automatic cleaning and dust removalof the surface of the sign can be realized, and a driver can know the road conditions clearly. Meanwhile, the potential safety hazard of manual cleaning is avoided, the cleaning efficiency is improved, and the labor intensity is reduced. The indicator lamp strips can emit light to enhance the warning effect of the road sign, and the driver can be better helped to know the instruction content andcan also be attracted to actively watch the sign to know the road conditions.

The invention discloses a sheet-shaped conveyer belt, comprising two roller chains arranged on a driving wheel and a driven wheel, a roller chain pin shaft arranged between the two roller chains, and a meshed sheet link plate with filter holes connected with the roller chain pin shaft via a sleeve. The invention further discloses a washing device, comprising a water tank, a sheet-shaped conveyer belt obliquely arranged inside the water tank in a way that one end of the conveyer belt is positioned in the water tank and the other end is exposed outside the water tank and close to a receiving platform outside the water tank; and the water tank is connected with a water circulating pump, a circulating spray nozzle connected with the water circulating pump is installed inside the water tank, and a feed port is installed above the water tank. By using the inventive sheet-shaped conveyer belt, liquid material is separated from solid material via filter holes arranged on the meshed sheet link plate above the conveyer belt; and the meshed sheet link plate is kept in perpendicular state to the rotation of the roller and under the gravity action below the conveyer belt. The filter holes of the meshed sheet link plate below the conveyer belt are not liable to be blocked by the liquid and dirt substance filtered from the filter holes of the meshed sheet link plate above the conveyer belt, so as to realize self-cleaning function.

The invention relates to the field of air dust removal devices, in particular to a self-cleaning type air dust removal duct. The self-cleaning type air dust removal duct comprises a ventilation duct.According to the self-cleaning type air dust removal duct, a rotating motor arranged on the rear side, corresponding to the wind coming direction of a filter screen, on the ventilation duct is used asa power input source, an output shaft of the rotating motor drives the blades to realize air absorption, at the same time, the output shaft further drives a second shaft arranged on the front side ofthe wind coming direction of the filter screen to rotate through the bevel gear drive and the driving wheel drive, and a reciprocating thread on the second shaft is matched with a moving plate whichis connected in a screwed mode to realize the up-and-down movement of the moving plate. The filter screen can be cleaned by brushes to realize self-cleaning of the filter screen, and the durable dustremoval effect is ensured.

The invention discloses a washing machine with a flocculation and filtration module and a control method. The washing machine comprises a washing machine body and an independent flocculation and filtration module, wherein the flocculation and filtration module comprises a shell, a flocculation unit and a filtration unit; the flocculation unit and the filtration unit are arranged in the shell and are connected with each other; and a water feeding valve of the washing machine body is respectively connected with a treated water outlet of the flocculation and filtration module and an external water feeding faucet through a three-way pipeline. By the control method of the washing machine, during water feeding or replenishing, water fed from the external water feeding faucet enters an outer barrel of the washing machine via the three-way pipeline and the washing machine body; and when treated water circulates, the water is drained to the treated water outlet of the flocculation and filtration module via a water draining tube of the washing machine body, and is fed to the outer barrel of the washing machine in a circulating manner via the three-way pipeline and a water feeding valve of the washing machine body. Circulating water treating equipment of the washing machine is provided with the flocculation and filtration module and is convenient to mount; and the components are connected to one another via the three-way pipeline, an internal water channel of the existing washing machine does not need to be improved, and the cost is reduced.

The invention discloses a garbage can cleaning device, and belongs to the technical field of garbage cans. The garbage can cleaning device comprises a can body, a rotating shaft, a motor, a brush rod and brush bristles arranged on the brush rod. The rotating shaft is connected with the motor, the motor is installed at the bottom of the inner side of the can body, the brush rod is connected to the rotating shaft through a connecting piece, and the brush bristles are tightly attached to the lateral wall and the bottom inside the can body. The garbage can cleaning device further comprises a timer and a power source (9), the timer and the power source (9) are installed on the lateral wall of the can body, one end of the timer is electrically connected with the motor, and the other end of the timer is electrically connected with the power source (9). The garbage can cleaning device is provided with the timer, workers do not need to manually operate the cleaning device and only need to set time on the timer, rotating of the motor is controlled by the timer, and use of the cleaning device is accordingly controlled. In this way, even though the workers forget to clean the garbage cans, the garbage cans can be cleaned by themselves, cleaning of the garbage cans is accordingly guaranteed, and the environment protection effect is achieved.

The invention discloses a self-cleaning outdoor advertising board. The self-cleaning outdoor advertising board comprises a main rod, a lower fixing plate and an upper fixing plate, the lower fixing plate and the upper fixing plate are fixedly connected to the side wall of the main rod, an advertising board body is fixedly connected between the lower fixing plate and the upper fixing plate, a through hole is formed in the upper end of the main rod, and net plates are arranged at two openings of the through hole. An impeller, a magnetic sliding plug, a wiping mechanism, a spiral coil and a magnetic rod are arranged, when the wind power is large, the wind power drives the impeller to rotate, the magnetic sliding plug is pushed to slide up and down by magnetic force, and an elastic balloon isinflated and expanded, so a sliding ring is driven by a sliding block to slide along a fixed plate, a cleaning brush wipes the surface of the advertising board without manual cleaning, the danger thatthe advertising board is prone to falling off during manual cleaning is avoided, and the labor intensity of cleaning personnel is reduced; and meanwhile, colored lamps can emit light when the magnetic sliding plug slides, the attraction of the advertising board is enhanced, and the better advertising effect is achieved.

The invention belongs to the technical field of inorganic functional materials, and discloses a method for preparing a Ag@AgCl / GO self-cleaning type surface raman-enhanced substrate. According to the method, silver nitrate serves as a precursor, PDDA serves as a modification reagent, C6H12O6 serves as a reducing agent, and hydrothermal reaction is performed to prepare Ag@AgCl sol; a Ag@AgCl / GO composite thin film is obtained through self-assembling and adsorbing Ag@AgCl nano particles with positive charges by using the fact GO carries negative charges, and has a high adsorption function and a temperature effect, and the Ag@AgCl / GO composite thin film is applied to the self-cleaning type surface raman-enhanced substrate. Compared with a conventional raman-enhanced substrate, the self-cleaning type surface raman-enhanced substrate has an excellent SERS (surface enhanced raman scattering) property, that a substrate material is recycled for multiple times is realized due to the excellent photocatalytic degradation performance, so that the self-cleaning type surface raman-enhanced substrate has a wide actual application prospect.