40results about How to "Realize self-cleaning effect" patented technology

The present invention discloses a transparent sound-absorption film surface hydrophobic self-cleaning coating preparation method, wherein nanometer silica is adopted as base particles, other polymer additives are added to improve a hydrophobic effect, and a mixed slurry is sprayed onto a porous polycarbonate sound-absorption surface. The preparation method comprises the following steps: carrying out an ultrasonic cleaning treatment on a porous polycarbonate sound-absorption film, adopting silicon tetraacetate and KH-570 as raw materials to prepare modified nanometer silica particles, mixing a certain amount of polyvinylidene difluoride, N,N-dimethylformamide and butanone according to a certain ratio to prepare a polyvinylidene difluoride mixing solution, mixing a certain amount of the nanometer silica particles and the polyvinylidene difluoride mixing solution, spraying the obtained mixed solution on the porous sound-absorption surface, and drying to form the coating. The transparent sound-absorption film surface hydrophobic self-cleaning coating has a high water contact angle, has high light transmittance, and can not block a micro-pore structure of the sound-absorption surface.

The invention discloses an embedded type short-screw-flight same-direction asymmetric multi-screw extruder and a machining method thereof. A screw mechanism in the extruder comprises a first screw and a second screw which are engaged with each other. The first screw is of a single-start thread structure, and the second screw is of a four-start thread structure. Embedded type short screw flights used as auxiliary screw flights are arranged in screw channel passageways each formed between two adjacent main screw flights in the first screw. The height of the auxiliary screw flights is smaller than or equal to the height of the main screw flights. According to the machining method of the embedded type short-screw-flight same-direction asymmetric multi-screw extruder, material conveying is achieved under the common effect of the axial positive displacement conveying force of the screw mechanism and the friction force between the first screw and the second screw. By means of the homoclinic orbit flow disturbance which is introduced through the embedded type short screw flights and shaped like the Arabic number '8', the whole-journey chaotic mixing in the screw channel passageways, the one-to-two topological chaotic effect formed by a passageway composed of the first screw and the second screw, the periodic compression and expansion effect generated by the passageways of the screw mechanism and the differential-speed rotation effect of the two screws are triggered, and the materials are sufficiently mixed, molten, mixed and plastified.

The invention discloses a homodromous self-cleaning double-screw extrusion machine with the number of starts gradually changing and with a whole-process self-cleaning function and a machining method thereof. A screw assembly of the extrusion machine comprises a first screw and a second screw, wherein the first screw and the second screw rotate at equal speed and in the same direction and are kept engaged. The first screw comprises a first single-start thread element, a first transitional element, a multi-start thread element, a second transitional element and a second single-start thread element which are connected in sequence. The second screw comprises a first single-start thread element, a third transitional element, a multi-start thread element, a fourth transitional element and a second single-start thread element which are connected in sequence. The machining method includes the steps that materials are conveyed through rotation of the first screw and the second screw, and constituents in the materials are promoted to be mixed through a structure of gradually changing numbers of starts of threads; a runner expands, contracts and expands again in sequence, so that the materials are divided, combined and divided again in the runner for chaotic mixing; self-cleaning is achieved through mutual wiping of the first screw and the second screw.

The invention discloses a composition and a liposome for anti-pollution cosmetics, a cream-type cosmetic, an emulsion-type cosmetic and preparation methods and application thereof, relates to the technical field of cosmetics and aims to solve the technical problems that conventional cosmetics can neither effectively isolate pollutants in air and nor achieve the self-cleaning or caring-maintaining effect. The liposome for the anti-pollution cosmetics contains the composition for the anti-pollution cosmetics, fully integrates the ingredients of a leontopodium alpinum extract, a moringa pterygosperma seed extract and a hibiscus syriacus bark extract, exerts the synergistic effect of the three extracts to prevent pollution, can not only effectively isolate the pollutants to form a protective screen for skin but also automatically clean the pollutants on the skin surface to reduce attachment of the air pollutants, can inhibit cellular oxidation and formation of free radicals, reduces skin wrinkles caused by the air pollutants, takes the effect of effectively caring and maintaining the skin, and is suitable for preparing various anti-pollution cosmetics.

The invention discloses self-cleaning type synclastic differential rotation double-screw extrusion device and method. A double-screw assembly in the device comprises a left screw and a right screw which have different rotating speeds, the left screw and the right screw are connected in an engaging manner, the inner cavities of a machine barrel are two cylindrical troughs which are communicated, and the left screw and the right screw are arranged in the cylindrical troughs respectively; the left screw has a single-ended thread or multi-ended threads, and the right screw has multi-ended threads; the section contour of each of the left screw and the right screw is of a closed structure which is formed by connecting a plurality of sections of curve arcs, the section shape of the left screw is not the same as that of the right screw; according to the method, the melting and conveying of materials can be accelerated by utilizing different shapes of the sections of the two screws through the space change of runners of the screws and the inner cavities of the machine cylinder. According to the device and the method, plasticizing and mixing effects of high-polymer materials in a processing process can be effectively improved, and a self-cleaning function can be realized.

The invention discloses a homodromous self-cleaning double-screw extruder with a stretching function. The homodromous self-cleaning double-screw extruder with the stretching function comprises a machine barrel, a first screw and a second screw. The cross section of the first screw and the cross section of the second screw are both formed by multiple sections of circular arcs which are unequal in radius of curvature, and the cross section of the first screw and the cross section of the second screw are different in shape. The invention further provides a processing method of the homodromous self-cleaning double-screw extruder with the stretching function. According to the homodromous self-cleaning double-screw extruder with the stretching function and the processing method of the homodromous self-cleaning double-screw extruder with the stretching function, when the first screw and the second screw which are different in cross-section shape rotate in an identical direction, periodical change happens to a cross-section shape of a flow passage, so that a compression action and a squeezing action are applied on materials in the flow passage, a flowing space of the materials is compressed and expanded in a periodical mode, and therefore a chaotic mixing effect is generated, a mixing and heat transfer process is strengthened, a thermal and mechanical process which is plasticized is largely shortened, energy consumption is low, an energy-saving and consumption-reducing effect is notable.

The invention discloses a co-rotating differential multi-screw extruding machine with the gradually changing type thread number and a machining method thereof. A first threaded rod in the extruding machine comprises two single-start thread elements, three single-start-gradually-changed-to-double-start transition thread elements, a double-start thread element and three double-start-gradually-changed-to-single-start transition thread elements; and a second threaded rod comprises two double-start thread elements, three double-start-gradually-changed-to-four-start transition thread elements, a four-start thread element and three four-start-gradually-changed-to-double-start transition thread elements. According to the machining method, a threaded rod mechanism achieves five enhancement mixing mechanisms by adopting the structure of the threaded rod mechanism, and conducts all-sided enhancement mixing on materials.

The invention discloses a durable super-hydrophobic candle ash coating and a preparation method thereof. The surface of a metal substrate subjected to chemical etching pretreatment is coated with a mixture of a bonding layer. And the brushed substrate is put into a vacuum drying box for vacuum treatment, so that mixture molecules permeate into the substrate. A candle is ignited, after the candle is stably burnt, the substrate is clamped through tweezers, the substrate is placed in the middle of the flame of the candle, soot particles are deposited, and the super-hydrophobic coating with the durable performance is obtained. The coating is good in stability and durability, and has excellent self-cleaning performance and good corrosion resistance.

The invention discloses an exterior wall insulation decorative plate capable of adaptive temperature control and fire extinguishing without electricity, and belongs to the building material fireproof warming plate technology field. The insulation decorative plate comprises a hollow aluminium section; more than one layer of aluminium foil heat conduction-insulation member in the enclosed space inside the hollow aluminium section; a novel bias current twist mode heat catcher arranged in an air flow adjusting layer of the exterior wall fireproof insulation decorative plate that can enhance the fluid's fluidity and bias current effect and improve heat catching effect by using a special physical structure of the heat catcher; a novel intelligent heat transition function paint, an inorganic foaming anticorrosion flame retardation layer; a low cost intelligent temperature-sensitive function assembly installed in the installation gap between the fireproof warming plate and the metope that can track temperature change and generate deformation automatically; and a fire extinguishing performer, namely an intelligent combination of a shape memory alloy temperature-sensitive performer and a shape memory temperature-sensitive fiber capsule. The insulation decorative plate has the advantages that excellent fireproof and moistureproof performances are provided; adaptive temperature adjustment and fire extinguishing are realized; and high mechanical strength, good toughness, light weight and low cost are provided.

A disclosed self-cleaning long-service-life household water purifier comprises a water pump and an air pump, a main water pipe is arranged in the outer side of the water pump, a first auxiliary water pipe is arranged on the outer side of the main water pipe, and a flow meter is arranged on the outer side of the main water pipe; and a filtering tank I, a filtering tank II, a filtering tank III and a filtering tank IV are arranged between the water pump and the air pump. According to the self-cleaning long-service-life household water purifier, through mutual cooperation of first to fourth filtering barrels, four-stage filtering can be achieved, it is guaranteed that the water purifying effect of safer drinking is achieved, backwashing of the first filtering barrel and the fourth filtering barrel is achieved through reverse flushing of water flow and air flow, desorption of the second filtering barrel and the third filtering barrel is realized through thermal desorption and salt desorption, so that impurity molecules adsorbed on the surface of a filter element material fall off, the self-cleaning effect is realized, the service life of the filter element is prolonged, the filter element material is recycled, and the filter element replacement frequency is reduced while the filtered water is safer and healthier.

The invention discloses a coarse separation mechanism for excrement and water, which belongs to the field of urban sanitation equipment. At present, in the process of separating and collecting urban excrement and water, a sieve structure is used for impurity removal. This method will simultaneously remove inorganic impurities such as large pieces of organic matter and mixed plastics. Filtration, this link will lead to the loss of a large amount of organic matter, resulting in waste of organic matter, and the removal of large debris will lead to low separation efficiency. It should also be pointed out that in the existing separation equipment, vacuum pumps and closed storage bins are often used for material separation. Inorganic impurities mixed with organic matter will quickly fill up the storage bin and make it difficult to clean, affecting the effective use of the equipment. . On the one hand, the present invention improves the separation efficiency by crushing bulk organic matter and inorganic matter such as plastics; on the other hand, it can effectively reduce the loss of organic matter components caused by filtering out inorganic matter. At the same time, this design realizes self-cleaning by setting a cleaning comb structure Function, reduce equipment maintenance costs.

The invention relates to an ultrasonic wave environment purifier including: a case, at least one filter screen plate, and ultrasonic transducers; a purification chamber is formed in the case; an air inlet and an air outlet are respectively disposed at the two ends of the case; the filter screen plates are vertically installed in the purification chamber in order; the ultrasonic transducers are respectively on the side edges of the filter screen plates so that the filter screen plates are subjected to ultrahigh-frequency cutting vibration filter movement; a water curtain slot and a water inletjoint are arranged above each filter screen plate and spray water to form a water curtain on each filter screen plate; a water outlet hole is formed in the bottom of the case. The environment purifieris free of replacement of filter screens and is zero-consumption, wherein the filter screens have self-cleaning function, so that the filter screens are free of cleaning and maintenance. The environment purifier can work uninterruptedly for long period. The environment purifier is high in air purification degree and purification efficiency, is simple in structure, is easy to achieve, is reliableand durable and is suitable for air purification under different environments.

The invention discloses a circulation type electroplating liquid filtering device. The circulation type electroplating liquid filtering device comprises a barrel, a filter bag, filter frames and a top cover; an annular supporting mechanism is arranged at the position of an upper port of the barrel; the circulation type electroplating liquid filtering device is characterized in that the filter frame, the filter bag, the filter frame and the top cover are sequentially placed above the annular supporting mechanism from bottom to top, and the five parts are compressed and fixed through fixing components; a cavity between the bottom face in the barrel and the corresponding filter frame is a concentration cavity, and the side face of the concentration cavity is provided with a liquid inlet pipe and a material liquid outlet; and a guide pipe is further included, the guide pipe penetrates the top cover to enable the interior and the exterior of the barrel to be communicated, and a port, exposed out of the barrel, of the guide pipe is connected with an electroplating liquid leading-out pump. A self-cleaning function can be achieved, the number of times of replacement is decreased, potential hurts to the human body and potential damage to the surrounding environment are avoided, the electroplating liquid filtering stress is even, and the filtering effect is good. The circulation type electroplating liquid filtering device further comprises a circulation pipe, sufficient filtering of circulation of electroplating liquid is achieved, the using rate of the electroplating liquid is improved, and waste liquid discharging is reduced.

The invention discloses a multi-functional large-sized metal surface treating machine which is characterized in that a bottom platform is provided with a support arm structure and a dedusting box, the support arm structure comprises a parallelogrammic link mechanism and a turnover guide rail arranged on the parallelogrammic link mechanism, a surface treating working-head component comprises a shot blasting head and a shot supply device, and the working-head component is arranged on a guide rail by a slide block in a slip mode. According to the invention, the surface treating working-head component is arranged on the support arm structure and can rotatablely arranged on a movable platform, therefore, the mobility and flexibility of the surface treating machine can be effectively improved, and the surface treating machine is adapted to the surface treatment needs of ultra-high and ultra-large workpieces or structures in various specifications on various occasions, and can achieve an excellent processing quality.

The invention belongs to the technical field of municipal construction, and particularly relates to an environment-friendly garbage can for municipal construction. The environment-friendly garbage can comprises a can lid, a side plate, a can base and a circulation module. The can lid comprises a handle, a can lid plate, a screw cap, a rotary shaft, a piston, elastic rods, cleaning brushes, a sucking module, extension springs and a sleeve ring. The can lid plate is hinged to the side plate. The handle is located above the can lid plate and fixedly connected with the can lid plate. The screw cap is located above the rotary shaft. The rotary shaft is located above the piston and fixedly connected with the piston. The cleaning brushes are connected with the rotary shaft through the elastic rods. The sucking module is located between the rotary shaft and the elastic rods. The extension springs are located between the rotary shaft and the elastic rods. The sleeve ring is located below the rotary shaft and connected with the cleaning brushes through buckles. According to the environment-friendly garbage can, the circulation module is matched with the can lid, thus, the automatic sewage cleaning function and the can lid cleaning function are achieved, the can lid is easy to clean, the appearance of the garbage can is improved, and then the city appearance is improved.

The invention discloses a high-adaptability direct charging power supply for a lithium battery tool. Thehigh-adaptability direct charging power supply comprises a lithium battery tool body; the bottom of the lithium battery tool body is fixedly connected with one end of an elastic connecting assembly, the other end of the elastic connecting assembly is fixedly connected with an outer protection assembly, a driving assembly is connected to the side end face of the outer protection assembly in a clamped mode, the driving assembly is located in the outer protection assembly, an ejection assembly is arranged at the bottom of the inner side of the outer protection assembly, and an electric connection assembly is bonded to the end face of the inner side of the ejection assembly. According to the high-adaptability direct charging power supply for the lithium battery tool provided by the technical schemes of the invention, through mutual cooperation of structures such as an energy recovery assembly, the elastic connecting assembly, the driving assembly, the ejection assembly and the electric connecting assembly, absorption of heat on the surface of an outer protective shell by cooling liquid is effectively improved through circular flowing of the cooling liquid, and the heat energy volatilization amount of a lithium battery pack in unit time is guaranteed, and the stability of the low-temperature air acting on the lithium battery pack is effectively ensured.

The invention provides a fireproof heat retaining panel with an aluminum profile and an injection molded antiflaming heat-conducting-heat-insulation component, and belongs to the field of fireproof heat retaining panels of building materials. The fireproof heat retaining panel is formed by a transparent self-cleaning film 1 which does not absorb infrared rays, the outer surface 2 of an aluminum profile housing 11, a first heat-insulation inorganic coating layer 3, an injection molded antiflaming heat-conducting-heat-insulation component 4, a second heat-insulation inorganic coating layer 5, and an expansion glass wool layer 6 wrapped by aluminum foil, and a third heat-insulation adhesive film layer 7. The outer surface 2 is provided with a triangular pit in angle of 15-60 DEG and the self-cleaning film. A principle of double-layer glass heat insulation is used to make the injection molded antiflaming heat-conducting-heat-insulation component, and a quasi-stationary air thermal insulating layer is formed between the heat retaining panel and a wall surface. The injection molded antiflaming heat-conducting-heat-insulation component 4 is a ladder type linked body formed by a plurality of groups of element components 43 with horizontal simply support mechanical beams (heat conducting isothermal subparts) 41 which have electroplating heat conducting metal layers and support beams (heat insulation subparts) 42 without electroplating heat conducting metal layers. The coating layer 3 and the adhesive film layer 7 are formed by foaming inorganic adhesives.

The invention belongs to the technical field of rainwater filtering devices and particularly relates to an unpowered self-cleaning rainwater filtering device. The device comprises a water inlet three-way pipe; the water inlet three-way pipe is connected with a water inlet rainwater pipeline, a water storage pipe and a four-way pipe, an air inlet pipe is mounted at the top end of the water storage pipe, a filter screen is mounted at the bottom of the water storage pipe, and the inner side of the water storage pipe is connected with one end of a backwashing pipeline; the backwashing pipeline comprises a vertical pipe, an upper elbow, a transverse pipe, a Venturi pipe and a lower elbow, a drainage pipe connected with the other end of the backwashing pipeline is connected with a four-way pipe, the bottom side of the drainage pipe is connected with the four-way pipe through a seepage pipeline, the bottom end of the drainage pipe is connected with a water outlet rainwater pipeline, a flange blind plate connected with the top of the four-way pipe is connected with the top end of a connecting frame, and a filtering basket is installed at the bottom end of the connecting frame; the combined type design is low in cost and convenient to assemble, transportation, storage, popularization and use of the device are facilitated, water in the water storage pipe can be accelerated through the Venturi pipe under the siphon effect and sprayed out from the lower elbow, and unpowered backwashing of the filter plate is achieved.

The invention discloses an air shower type quick drying device for food vacuum packaging, which not only realizes the air shower drying from the top, but also realizes the air shower drying from the bottom, which can greatly improve the air shower drying ability. The setting of the shower assembly that can continuously swing back and forth around the horizontal direction can effectively improve the drying ability of the air shower and the performance of the air flow. The wind mechanism can automatically clean the filter screen group inside itself, which can effectively improve the self-cleaning ability of the filter screen group, improve the performance of the air shower airflow, and ensure the air shower effect. The present invention can conveniently realize the self-cleaning effect and self-cleaning ability of the filter net group by setting the self-cleaning control and locking component and the transmission control component, and can realize regular self-cleaning to ensure the effect.

The invention discloses an air shower type quick drying device for food vacuum packaging. The air shower type quick drying device not only realizes air shower drying from the upper part, but also realizes air shower drying from the bottom, and can greatly improve the air shower drying capacity. An upper spraying assembly can swing continuously in a reciprocating mode in the horizontal direction, so that the air shower drying capacity and the air flow flowing performance can be effectively improved; a filtering and air supply mechanism can filter spraying air, the filtering and air supply mechanism can automatically clean a filtering net set in the filtering and air supply mechanism, thus the self-cleaning capacity of the filtering net set can be effectively improved, the air shower air flow performance can be effectively improved, and the air shower effect is ensured. A self-cleaning control and locking assembly and a transmission control assembly are arranged, the self-cleaning effect and the self-cleaning capacity of the filter screen set can be conveniently achieved, regular self-cleaning can be achieved, and the effect is guaranteed.

The present invention relates to a 5G communication base station, comprising: a steel frame tower, base station communication equipment arranged in the steel frame tower, and an outer cover fixedly connected to the steel frame tower and wrapping the steel frame tower. The 5G communication base station of the present invention has a high self-cleaning effect, can use high hydrophobic materials to realize water droplets rolling freely on the hydrophobic surface, can take away dust and particles during the rolling process, and can be used outdoors for a long time, significantly The dust adhesion of the outer cover is reduced, the operation is simple, the cost is low, and it can meet the needs of 5G communication.

The invention discloses an assembly line sand core mold batch transfer table. The assembly line sand core mold batch transfer table comprises a transfer table body; the transfer table body comprises aconcentric-square-shaped frame, a plurality of weighing rods are rotationally connected with the inner wall of the concentric-square-shaped frame, and a rectangular box is fixedly arranged on the side wall of the concentric-square-shaped frame; a driving motor is installed on the side wall of one end of the rectangular box, the rotating end of the driving motor penetrates through the side wall ofthe rectangular box to be fixedly connected with a driving shaft, and the outer wall of the end, located in the rectangular box, of the driving shaft is sleeved with a driving gear; and the driving gear is engaged with a crawler belt, a rack on the crawler belt is engaged with a plurality of driven gears, inner rings of the driven gears are fixedly connected with driven shafts, one ends of the driven shafts are rotationally connected with the inner wall of the rectangular box, and the other ends of the driven shafts are fixedly connected with one ends of weighing rods. According to the device, floating sand is prevented from being accumulated on the transfer table body, the rotating end of the driving motor drives the driving shaft, the driving gear, the crawler belt, the driven gears, the driven shafts and the weighing rods to rotate, falling of the floating sand on the weighing rods is further enhanced, and the self-cleaning effect of the transfer table body is achieved.

The invention discloses a self-sewage-cleaning type spiral plate sewage heat exchanger. According to the heat exchanger, a sewage heat exchange wide flow way and a clean water heat exchange narrow flow way in a shell are wound around in a side-by-side manner to form a spiral heat exchange main body, and a plurality of sewage cleaning units and sewage discharging plates are formed in the spiral heat exchange main body, wherein the inner side surface of an outer side spiral plate of the sewage heat exchange wide flow way is provided with the protruding arc-shaped guide plates, and the arc-shaped guide plates are combined to form the sewage cleaning units; and the sewage discharging plates are evenly distributed at the lower ends of the sewage cleaning units, and inclined angles are formed between the sewage discharging plates and the horizontal direction. According to the heat exchanger, sewage bonded on the sewage wide flow way heat exchange plate can be effectively cleaned up, happening of a scale formation hanging wall is obstructed, and self sewage cleaning can be reliably achieved. Continuous sewage discharging can be achieved, and secondary appearing of sewage is prevented. The self-sewage-cleaning type spiral plate sewage heat exchanger has the prominent substantive beneficial effects and obvious advantages of being novel and unique in conception, compact and reasonable in structural design, stable and reliable in work performance, excellent in scale prevention and sewage cleaning effect, economical, practical, energy-saving, efficient, and capable of obviously improving the heat exchange efficiency and obviously prolonging the service life. The self-sewage-cleaning type spiral plate sewage heat exchanger is the most ideal sewage heat exchange equipment in the field at present.

The invention discloses a pulverizer for soil conditioner production. The pulverizer for soil conditioner production comprises a base, a material collecting groove is formed in the bottom of the interior of the base, two sets of pulverizing rollers which are matched with each other are arranged in the middles of the two ends of the interior of the base, a driving motor C is installed at one end ofthe front face of the base, the output end of the driving motor C is fixed to one side of one set of crushing roller, and a discharging hopper is installed at the top end of the interior of the base.According to the pulverizer for soil conditioner production, through mutual cooperation of a driving motor A, a rotating shaft, a rectangular frame body, spiral blades, the driving motor C and the two sets of crushing rollers, two-time crushing is conducted, the crushing effect is better, in the primary crushing process, particles attached to the inner wall of a feeding bin are removed through brush plates, through mutual cooperation of air nozzles and an air pump, residual particles on the two sets of crushing rollers are removed, so that a self-cleaning effect is achieved, and bonding is avoided.

The invention belongs to the technical field of rainwater filtering devices, and in particular relates to a non-powered self-cleaning rainwater filtering device, which includes a water inlet three-way pipe connected to a water inlet rainwater pipeline, a water storage pipe and a four-way pipe for water storage An inlet pipe is installed on the top of the pipe, a filter is installed on the bottom, and one end of the backwash pipeline is connected to the inside. The backwash pipeline includes a vertical pipe, an upper elbow, a horizontal pipe, a Venturi tube, and a lower elbow, and the other end of the backwash pipeline The connected drain pipe is connected with a four-way pipe, the bottom side of the drain pipe is connected to the four-way pipe through the seepage pipeline, the bottom of the drain pipe is connected to the outlet rainwater pipeline, the flange blind plate connected to the top of the four-way pipe is connected to the top of the connecting frame, and the bottom of the connecting frame A filter basket is installed at the end of the cross pipe, and a filter plate is installed at the end of the four-way pipe facing the drain pipe. The combined design is low in cost and easy to assemble, which is conducive to the transportation, storage and popularization of the device. The tube speeds up and sprays out from the lower elbow to realize non-powered backwashing of the filter plate.

The invention relates to a micro 5G communication base station antenna, comprising a holding pole, an antenna as well as an upper bracket and a lower bracket respectively fixed on the holding pole; the upper bracket is located above the lower bracket; the upper end of the antenna is connected with the upper bracket; the lower end of the antenna is connected with the lower bracket; and the antennacomprises an outer cover and a circuit board located at the outer cover. The micro 5G communication base station antenna provided by the invention has relatively high self-cleaning effect, can utilizea relatively highly hydrophobic material for realizing an effect that water drops freely roll on a hydrophobic surface, can take dust and particles away in a rolling down process and can be used outdoors for a long time, so that dust attached on the outer cover is obviously reduced, operation is simple, cost is low, and 5G communication need can be met.

The invention provides an automatic cleaning device based on a bipolar membrane of an electrodialyzer, which comprises a main body, wherein a movable shaft is installed in the inner wall of the main body, a cationic membrane and an anionic membrane are installed on the two sides of the movable shaft and located in the inner wall of the main body, two power wheels are movably installed on the movable shaft, the outer sides of the two power wheels are each provided with a plurality of stress blades, the stress blades are evenly distributed on the outer sides of the power wheels, three cleaning devices are installed between the two power wheels, and the cleaning devices are located on the movable shaft. According to the automatic cleaning device based on the bipolar membrane of the electrodialyzer, on the one hand, suspended solids and impurities adsorbed on the cationic membrane and the anionic membrane can be effectively removed, meanwhile, the penetrability of a water solution is improved, and on the other hand, performance reduction caused by scale deposition on the cationic membrane and the anionic membrane can be improved.

The invention discloses a glass fiber reinforced plastic hollow web convenient to clean, and relates to the technical field of building material production. The glass fiber reinforced plastic hollow web convenient to clean comprises a supporting plate, wherein the top of the supporting plate is coated with a surface coating; a hollow cavity is formed in the supporting plate; a reinforcing rib is arranged in the hollow cavity; the section of the reinforcing rib is of a triangular structure; one side of the supporting plate is fixedly connected with a clamping head, and the other side of the supporting plate is fixedly connected with a fixing head; the fixing head is matched with the clamping head; the surface coating comprises a leveling layer; the bottom of the leveling layer is fixedly connected with the supporting plate; and the top of the leveling layer is fixedly connected with a dustproof layer. The clamping head and the fixing head are arranged at the two ends of the hollow web correspondingly, the clamping head and the fixing head are matched, can be easily clamped through material elasticity and can also be detached through force effect, and the effects of rapid clamping and simple fixing between hollow webs are achieved.

The invention discloses a self-cleaning type co-rotating differentially rotating twin-screw extrusion device and method. The twin-screw assembly in the device includes a left screw and a right screw with different rotating speeds. The left screw and the right screw are meshed and connected. The inner cavity of the barrel is Two connected cylindrical grooves, the left screw and the right screw are respectively arranged in the cylindrical groove; the left screw is a screw with single thread or multi-thread, and the right screw is a screw with multi-thread; the cross-sectional profiles of the left screw and the right screw are respectively multi-segment It is a closed structure connected by curved arcs, and the cross-sectional shapes of the left screw and the right screw are inconsistent; the method is to use the different cross-sectional shapes of the two screws, and the change of the space between the screw and the inner cavity of the barrel to accelerate the melting and conveying of materials . The invention can effectively improve the plasticizing and mixing effects in the process of polymer material processing, and realize the function of self-cleaning.