176results about How to "Improve filtration and purification effect" patented technology

The present invention relates to a zirconium oxide foamed ceramic filter. It is made up by adopting the following steps: using zirconium oxide, aluminium oxide, calcium oxide and yttrium oxide to form ceramic powder, adding methyl cellulose, polyvinyl alcohol and water to prepare slurry, using soft polyurethane foamed plastics as carrier, impregnating said carrier with said slurry, extruding to obtain blank material, drying and sintering so as to obtain the invented zirconium oxide foamed ceramic filter. The invented foamed ceramic filter has good high-temperature stability and thermal shocking resistance in the high-temperature molten steel, does not contaminate alloy and can obtain good filtering purification effect.

The invention relates to a magnesia foam ceramic filter with special high-temperature chemical stability, which is composed of magnesia, boron The high-quality polyurethane foam is used as the carrier, impregnated with the above slurry, extruded to form a billet, dried and sintered to obtain a magnesia foam ceramic filter. The ceramic foam filter of the present invention has good high-temperature stability in the magnesium alloy melt, does not pollute the alloy, has good filtration and adsorption capacity for oxidation inclusions and flux inclusions in the magnesium alloy melt, and has a good filtration and purification effect and is heat-resistant. Small capacity, no need to preheat when using, small fluid resistance, large filtration capacity, through the filtration and purification test of metal magnesium and magnesium alloy melt, all performances are good.

The invention discloses an yttria foamed ceramic filter and a preparation method thereof. The principal crystalline phase of the filter is yttria. The preparation process of the filter comprises the following steps of: mixing yttria or yttria and additives which are used as raw material with an adhesive, a dispersant and deionized water to prepare slurry; soaking the slurry with soft polyurethane foam which is used as a carrier, extruding and centrifuging to prepare a plain blank; and drying and sintering to obtain a finished product. The yttria foamed ceramic filter of the invention can be used for filtering a high-temperature high-activity alloy and has favorable high-temperature strength, thermal stability, thermal shock resistance and high-temperature chemical stability without alloy pollution, favorable capability of filtering impurities in a high-temperature high-activity alloy solution and good filtering and purifying effects.

The present invention relates to an aluminium oxide foamed ceramic filter with special high-temperature chemical stability. Said aluminium oxide foamed ceramic filter is made up by adopting the following steps: using magnesium oxide, boron carbide and boron trioxide to form ceramic powder, then adding methyl cellulose and water to prepare slurry, using soft polyurethane foamed plastics as carrier, impregnating said carrier with said slurry, extruding to make blank material, drying and sintering so as to obtain the invented magnesium oxide foamed ceramic filter. The invented foamed ceramic filter has good high-temperature stability in the molten magnesium alloy, does not contaminate alloy and possesses good filtering and adsorption efficiency for removing oxide impurity and flux impurity form molten magnesium alloy, so that its filtering purification effect is good.

The invention relates to an air purification device utilizing mosses. The device comprises a housing. An air inlet and an air outlet are respectively arranged on two ends of the housing. Blowers are arranged on the air inlet and the air outlet. Mosses used for purifying air are arranged in the housing. The part of the housing provided with mosses is manufactured by using a transparent material. A fill light and an atomizer are arranged in the housing. The device provided by the invention has a reasonable design. With artificial light supplement and a moisturizing device, moss annual indoor growth is facilitated. Also, with biological characteristics of tiny leaves, large specific surface area, and leaf absorption of mosses, the filtration function of mosses is sufficiently developed, and good air purification and oxygen circadian release functions are provided. Therefore, the air purification device can provide aerobic and fresh air. The moss scene and the filtration materials are combined. As a decoration, the device is beautiful and natural. The device works actively circularly day and night, and a filtration purification effect is better.

The invention relates to a foamed ceramic filter and a making method thereof. The foamed ceramic filter is prepared from, by weight, 20%-50% of silicon carbide, 20%-55% of zirconium oxide and 10%-36% of silicon oxide, and the quantities of the materials are all based on the total weight of the foamed ceramic filter. The invention further relates to the method for making the foamed ceramic filter. The method includes the following steps that a, slurry of the silicon carbide, the zirconium oxide or zirconium oxide precursors, silicon oxide or silicon oxide precursors, a bonder, an optional additive and liquid carriers is provided; b, porous organic foam is coated with the slurry; c, the porous organic foam coated with the slurry is dried, and a blank is obtained; d, the blank is sintered in oxygen containing atmosphere, and the foamed ceramic filter is obtained. The foamed ceramic filter has the advantages of being resistant to high temperature, low in cost and the like.

The invention relates to a filter purification method which can lead the gas which contains high-temperature dust grains and high-temperature combustion dust grains to pass through a wet-typed dust arrester and be filtrated, so as to lead the gas to be converted into dustless and clean gas and lead the gas to be guided to the filter water accumulation pool; under the action of a centrifugal fan, the negative pressure passes through a labyrinth-typed water retaining mechanism, the water accumulation pool and an airflow diffusion chamber so as to lead the wind inlet to form a high-pressure negative pressure area; when the high-temperature dust gas to be dedusted is sucked into the airflow diffusion chamber, the high-temperature dust airflow loses the pressure and the flowing speed is reduced, therefore, the dust grains contained in high-temperature dust airflow drips in the water accumulation pool; the airflow which loses the pressure and the dust grains increases the pressure and rapidly passes through the water surface when passing through the airflow passage which consists of a lower end of the internal machine wall and the lower end surface of the external machine body; the water in the airflow is damped and drips in the water accumulation pool by the labyrinth-typed water retaining mechanism; the purified airflow passes through the labyrinth-typed water retaining mechanism and the centrifugal fan and is exhausted into the atmosphere by the wind outlet.

The invention provides an air purifying device. The air purifying device comprises a dissolving-purifying unit, a boosting-sterilizing unit, a purifying-ventilating unit and an illuminating-displaying unit, wherein the dissolving-purifying unit is connected to the boosting-sterilizing unit; the boosting-sterilizing unit is connected to the purifying-ventilating unit; the illuminating-displaying unit is arranged on the purifying-ventilating unit. According to the air purifying device, a spraying atomizer capable of spraying purified water into high-concentration water mist is arranged in the dissolving-purifying unit for the first time, so that the dissolving degree of contaminated air in water mist is increased greatly, and the purifying effect is ensured; meanwhile, a turbine boosting structure and a ventilation unit are designed innovatively, so that the purification ventilation strength is enhanced, and sufficient air volume and air pressure are ensured; moreover, the functions of water mist purification, filtering-dust removing, ultraviolet sterilization, ozone disinfection, illumination and the like are integrated innovatively, so that the overall performance of the air purifying device is enhanced greatly, and the air purifying device has greater market competitiveness.

The invention provides a rainwater collection device and relates to rainwater collection and recycling in the field of environment protection, in particular to a device for collecting rainwater by means of workshops in industrial and mining enterprises. The device comprises a collection plate, a water division pipe and a water storage tank, wherein a primary filtering device, a purified water activation device and an impurity discharge barrel device are sequentially mounted between the water division pipe and the water storage tank. With the adoption of the structure, when an impurity discharge barrel is filled of water, the weight of water above the eccentric shaft is larger than that of water below the eccentric shaft, the impurity discharge barrel automatically overturns under the action of the gravity, and water in the impurity discharge barrel is poured out; after water in the impurity discharge barrel is completely poured out, the impurity discharge barrel returns to the original position under the action of gravity, a switch contact is in an open state, and the impurity discharge barrel becomes a water channel. With the adoption of the device, various impurities or sewage flowing down from the collection plate originally are effectively treated in the rainwater collection process, and the following filtering efficiency is effectively improved. The device is simple in structure, practical and efficient, the filtering purifying effect is improved, rainwater can be widely used after primary treatment, and the use range of rainwater is greatly widened.

The invention relates to a portable air purifier, which is mainly characterized in that: an air filtration and purification unit at least comprising one or more filter assembly, a fan and an air velocity control unit are arranged in a purifier shell; the air is sucked through an air inlet at one end of the shell by means of the fan, most harmful impurities in the air are filtered and purified by the air filtration and purification unit to obtain air with high purification effect, and the purified air is discharged through an air outlet at the other end of the shell; a guide pipe is connected at the air outlet, and the other end of the guide pipe is provided with a nostril plug capable of being plugged into the nostril, so that the air velocity of the purified air is adjusted actively by means of the air velocity control unit in an automatic or manual mode; and the air is directly guided into the nostril under proper air pressure, so that a user can easily breathe the purified air. By means of the design, the portable air purifier can be used by sports persons, patients, pedestrians, outdoor activity personnel, epidemic area working and living persons, medicinal personnel, firefighters, armies and the like.

The invention relates to the technical field of concrete processing and discloses a feeding device for commercial concrete processing. The feeding device comprises a retreatment tank. The two sides ofthe top surface of the retreatment tank are fixedly provided with automatic sealing mechanisms. The retreatment tank is internally and movably sleeved with a transmission shaft. The bottom surface ofthe transmission shaft is fixedly provided with crushing blades. The bottoms of the crushing blades are movably sleeved with buffer blades. The bottom surfaces of the buffer blades are movably connected with a first filter screen. The feeding device filters a concrete bagged raw material through the first filter screen, filters and separates out caking or big particle aggregates in the raw material, subsequently drives a crushing structure composed of the transmission shaft, the crushing blades and the buffer blades to crush and stir the caking or big particle aggregates with a servo motor asa power mechanism, and reprocesses the caking or big particle aggregates into powder to be bagged. The quality problem that concrete is stirred unevenly during the later period of bagging and using is avoided.

The invention discloses a honeycomb ceramic filter and a preparation method thereof, and belongs to the field of inorganic nonmetal. The honeycomb ceramic filter is obtained after ceramic powder and plastic pug are sequentially subjected to ball milling, mixing, decaying, vacuum pugging and extrusion forming, dry cutting and sintering, wherein the ceramic powder is prepared by mixing mullite, kaolin, ultrafine silicon dioxide, aluminum oxide and zirconium silicate according to the proportion, and the plastic pug is prepared by mixing auxiliary materials composed of a glue, glycerol and hydrate cellulose. The honeycomb ceramic filter has good high-temperature strength and good thermal shock resistance. The method has the characteristics of low cost and simplicity in operation and is suitable for industrial production.

The invention discloses a water feeding device suitable for animal husbandry industry in a karst region and a method of using the same. The water feeding device comprises a water tank and a drinking trough, the bottom of the water tank is provided with a water inlet communicated with the drinking trough, an outflow rubber plug movable up and down is arranged in the water inlet, a connecting cord that is connected to the outflow rubber plug is passed around two fixed pulleys disposed on the drinking trough and the water tank and is connected to a first floater, the first floater floats on water in the drinking trough, and the water tank is also connected with a mechanical automatic water supplement device. The outflow rubber plug and the first floater enables mechanical automatic water supplement for the drinking trough, less manual observation is required, no electricity supply is required, energy use is more economical, labor cost is lower, water interruption due to power outage is avoided, water supply is more continuous, the structure is simple, the cost is low, water supplement is more time-saving and labor-saving, and automatic water supplement also allows for saving of water resource; the water feeding device also has the advantages of simple structure, low cost and good convenience in manufacture, use and maintenance.

The invention relates to an air purification sofa which comprises a bottom box, a cushion, a backrest and armrests, wherein the cushion and the backrest are is fixedly mounted on the bottom box; the armrests are mounted on the two sides of the cushion in an articulation manner; the sofa is characterized in that a disinfection box is further arranged behind the backrest; a negative pressure fan ismounted at the top of the disinfection box; the bottom of the disinfection box is communicated with the bottom box; a ventilation fan is further arranged at a communicating part; an air inlet is further formed in the end face of one side of the bottom box; a blower is arranged in the air inlet; a moss cultivation disc is mounted on a bottom plate of the bottom box in a sliding manner; and light supplement lamps and atomization nozzles are further arranged on a top plate on the bottom box. The sofa overcomes the defects of the prior art; the bottom box is combined with the sofa; a utilization rate of an indoor space can be increased; at the same time, the bottom of the sofa can be sealed completely by a damp-proof sealing layer; and indoor dust accumulation is avoided.

The invention relates to a lampblack filtering material comprising porous foam metal and a preparation method of the lampblack filtering material. The lampblack filtering material comprises the porous foam metal of an open-type porous network structure, wherein the porosity of the porous foam metal ranges from 90% to 99%, and the pore size ranges from 20PPI to 200PPI. The pore surface of the porous foam metal comprises one or two of antibacterial plating solution and mildew preventive. The porous-foam-metal lampblack filtering material used for lampblack air filtration, especially the porous-foam-metal lampblack filtering material with bacteria inhibition and mildew prevention performance, is particularly applicable to filtration of indoor lampblack air.

The invention relates to an aquatic product temporary aquaculture system, and belongs to the technical field of aquatic product aquaculture. The technical scheme includes that the aquatic product temporary culture system comprises a temporary aquaculture tank, a filter tank, a protein skimmer and a refrigerating machine which are sequentially communicated, the refrigerating machine and the temporary aquaculture tank are communicated to form circulation, a filter is slidably inserted in the filter tank, the inside of the filter tank is divided into a filter area and a recycling area by the filter, the filter comprises a standing plate and a filter screen, the filter screen is detachably and fixedly connected at the top end of the standing plate, a plurality filter grooves are formed in thetop surface of the standing plate, an activated carbon strips are placed in the filter grooves, and a drainage pipe with a valve is communicated at the bottom of the filter area, so that filtered solid impurities are conveniently cleaned.

The invention discloses automatic treatment equipment for sewage treatment, and relates to the technical field of sewage treatment equipment.The automatic treatment equipment comprises a treatment box body and further comprises a centrifugal box body, a stirring assembly, a filtering assembly and an aeration assembly; the centrifugal box body is rotationally installed in the treatment box body, a feeding pipe is arranged between the top walls of the treatment box body, a feeding ring hole connected with the feeding pipe in a matched mode is formed in the top wall of the centrifugal box body, and sewage to be treated is added into the centrifugal box body through the feeding pipe and the feeding ring hole;the centrifugal box body is driven to rotate; sewage and a chemical agent are mixed and stirred by the centrifugal box body and a plurality of groups of stirring parts arranged in the centrifugal box body, so that the mixing and stirring effect is effectively improved; in the operation process of the piston cylinder, the sewage is aerated through the aeration assembly, and the annular adsorption cavity adsorbs impurities in the sewage again, so that the filtering and purifying effects of the sewage are effectively improved.

This invention discloses a method for utilizing granular ceramic filter materials in treating wastewater of iron and steel industry. The method comprises: filling granular ceramic filter materials into the filtration tank of treatment apparatus of wastewater of iron and steel industry, performing a first time sedimentation and a second time advection sedimentation on wastewater of iron and steel industry, sending into the filtration tank from the top, intercepting and adsorbing by the granular ceramic filter material, separating water and pollutants, and discharging clear water. The granular ceramic filter materials comprise haydite filter material, porcelain sand filter material, and ceramic ball filter material. The method utilizes granular ceramic filter materials to replace oval, quartz sand and anthracite filter materials, and thus has such advantages as simple process, low production cost, high treatment efficiency, good working environment, good filtration and purification effect, clear filtered water, long filter material usage cycle, low yearly filter material cost (saved by 40-50%), high filtration and sewage interception ability (raised by more than 30%), and zero wastewater discharge.

The invention relates to a zirconia foam ceramic filter, which is composed of zirconia, alumina, calcium oxide and yttrium oxide to form ceramic powder, and then adds methyl cellulose, polyvinyl alcohol and water to prepare slurry, and uses flexible polyurethane foam The plastic is used as a carrier, and the slurry is impregnated, extruded to form a billet, dried and sintered to obtain a zirconia foam ceramic filter. The foamed ceramic filter of the invention has good high temperature stability and thermal shock resistance in high temperature cast steel melt, can avoid breakage caused by mechanical shock and thermal shock during use, does not pollute the alloy, and has no effect on metal melting. Oxidation inclusions and flux inclusions in the liquid have good filtration and adsorption capacity, good filtering and purification effect, small heat capacity, no need to preheat during use, small fluid resistance, and large filtration capacity. Purification test, the performance is good.

The invention discloses an air conditioner filter net comprises a body. A ceramic base composite coating, an aluminium oxide coating and an antistatic coating are sequentially coated on the outer surface of the body from inside to outside; mounting seats are fixedly connected on the periphery of the outer surface of the body; mounting holes are formed in the inner surfaces of the mounting seats; a first filter net body is movably connected with the front end of the inner surface of the body through a spring; a photocatalyst layer is fixedly connected with the middle end of the inner surface of the body; and an ultraviolet germicidal layer is fixedly connected with the rear end of the inner surface of the body. According to the air conditioner filter net, the first filter net body is movably connected with the front end of the inner surface of the body through the spring, the photocatalyst layer is fixedly connected with the middle end of the inner surface of the body, the ultraviolet germicidal layer is fixedly connected with the rear end of the inner surface of the body, and an ultraviolet lamp is fixedly connected with the inner surface of the ultraviolet germicidal layer, so that the problems that the filtering and purifying effect of an existing filter net is unsatisfactory, and using of people is inconvenient are solved.

The invention relates to the technical field of environment protection equipment and discloses an industrial combustion coal gas filtering and purification device. The industrial combustion coal gas filtering and purification device comprises a bottom plate, wherein an air blower is fixedly mounted at one side of the top of the bottom plate; an air conveying pipe fixedly sleeves an output end of the air blower; a filtering tank is fixedly connected with one end of the air conveying pipe; one end of the air conveying pipe penetrates through and extends into the filtering tank; the bottom of thefiltering tank is fixedly mounted at the top of the bottom plate; and an air feeding pipe, which is located just above the air conveying pipe, fixedly sleeves the middle of one side of the filteringtank. According to the industrial combustion coal gas filtering and purification device disclosed by the invention, the filtering and purification device is internally provided with a steam turbine and a power generator; hot gas produced by industrial coal combustion is guided into the steam turbine through an exhausting pipe and the hot gas drives a fan blade in the steam turbine to rotate; and the fan blade drives a bearing to rotate and the bearing drives the power generator to rotate, and power is generated through the power generator, so that the aim of utilizing waste gas of the industrial combustion coal gas filtering and purification device is realized.

The invention relates to the technical field of air purification, in particular to a walkable auto-control air purification device. According to the walkable auto-control air purification device, an air purifier is driven by an automatic walking device to walk according to a preset trajectory and stay at preset points, so that the air purifier can achieve the function of purifying air at the different preset points and then complete the function of purifying air in different areas; furthermore, such three ways as dust removal and filtration, water filtration, as well as absorption and purification are combined, so that the graded filtration and purification of air can be achieved, the filtration and purification effects are good, and harmful substances in air can be sufficiently removed; and a filter screen can be automatically cleaned and the cleaning operation is convenient.

The invention discloses a ceramic atomizing head. The atomizing head comprises an atomizing sleeve, an atomizing frame, heating wires and an oil guide component, wherein the oil guide component is of a hollow cylindrical structure, the heating wires are of spiral spring-like structures, and arranged in the oil guide component, the lateral surfaces of the heating wires are wrapped and wound by an inner cylinder of the oil guide component, the oil guide component is arranged in the atomizing sleeve, the atomizing sleeve is matched and pressed tightly with the atomizing frame, an oil inlets uniformly distributed on the lateral surface of the atomizing sleeve are formed in the atomizing sleeve, the oil guide component comprises a cylindrical ceramic core with a cylindrical through hole, a multi-pore structure is arranged on the cylinder wall of the ceramic core, tobacco tar can be filtered and permeated to the other side of the cylinder wall through one side of the cylinder wall, and the heating wires are located inside the cylindrical through hole of the ceramic core. The ceramic atomizing head disclosed by the invention has the advantages of being environment-friendly, healthy and free of peculiar smells, high in smoke stability, good in user experience, strong in safety performances, convenient in use and long in service life and further wide in matching and applicability.

The invention provides an air supplying and filtering device for civil air defense engineering. The device comprises an interwoven fabric filter plate, a multilayer sintered metal filter plate, an alloy protective screen plate, a main supporting roller, a driving baffle, sealing rubber sheets and a connecting rod, wherein the sintered metal plate is clamped on the right side of the interwoven fabric filter plate; the alloy protective screen plate is mounted on the right end surface of a filtering shell. By means of the design, the problem that an original air supply structure for civil air defense engineering does not have filtering and purifying capacity is solved. The main supporting roller is installed on the upper side of the inner wall of an adjusting shell the driving baffle is clamped on the annular side surface of the main supporting roller, the connecting rod is inserted into the rear side in the driving baffle and the sealing rubber sheets are symmetrically clamped on the front and rear ends of the driving baffle, and therefore the problems that an original air supply structure for civil air defense engineering is inconvenient in air volume adjustment, complex in structure and easy to damage can be solved. Compared with the prior art, the air supplying and filtering device is reasonable in structure, facilitates air filtration and purification, facilitates air supplyvolume adjustment and is convenient to install and fix.

The invention discloses a self-circulation chemical air filtering method and filtering equipment thereof. The filtering equipment comprises a filtering equipment box body, a primary filter, a chemical filtering segment A, a blower, a chemical filtering segment B and a medium efficiency filter; the filtering equipment box body is of a vertical square structure, and the air inlet segment is composed of an air inlet shutter; the primary segment is formed by the primary filter, and the medium efficiency segment is formed by the medium efficiency filter; the air outlet segment is composed of an air outlet shutter; the chemical filtering segment A is welded and fixed above the primary segment, a blower segment is welded and fixed above the chemical filtering segment A, and the blower and a blower base are arranged in the blower segment; access doors are arranged at parts corresponding to the functional segments on the facade of the filtering equipment box body; the filtering equipment disclosed by the invention can be independently arranged indoors, the manufacturing cost is low, the installation is simple, and PM10 and PM2.5 granules and such chemical gases as SO2, NOx, formaldehyde, VOC can be effectively removed; the self-circulation air quantity is large enough to solve the problem that a fresh air filtering system cannot effectively purify indoor air.

The invention relates to the technical field of grinding oil processing equipment, and discloses an environment-friendly and energy-saving grinding oil filtering device. The environment-friendly and energy-saving grinding oil filtering device comprises a device body, wherein a deck is fixedly connected to the top of the device body, a clamp board is connected to the inner side of the deck, and a leak hole is formed in an inner cavity of the clamp board; a filter screen is fixedly connected with the inner side of the leak hole, and both sides of the top of the clamp board are fixedly connectedwith two sides of the bottom of a processing funnel; material inlets are formed in both sides of the top of the processing funnel, a motor is fixedly connected with the middle of the top of the processing funnel, and the bottom of an output shaft of the motor is fixedly connected with a stirring shaft; one end of the bottom of the stirring shaft runs through the processing funnel and is fixedly connected with the middle of the top of the clamp board. According to the environment-friendly and energy-saving grinding oil filtering device, the stirring shaft and stirring blades are driven to rotate by the motor, so that grinding oil in the processing funnel can be stirred so as to precipitate impurities in the grinding oil, and then the grinding oil is filtered through the leak hole and a sieve.

The invention discloses an energy-saving and environment-friendly municipal sewage treatment device, which belongs to the technical field of municipal sewage treatment, and comprises a body, a supportframe, a second electric telescopic rod, a sludge discharge chamber, a stirring blade, a biological purification film, a confluence cover and a spiral heat exchange pipe; a support plate is arrangedin the body, and the sludge discharge chamber is arranged above the support plate and between the support plate and the body; a second electric telescopic rod is mounted on the inner wall of the rightside of the sludge discharge chamber, and a sludge pressing plate is mounted on the left side of the second electric telescopic rod; a stirring chamber is arranged below the supporting plate, a motoris installed on the left side of the stirring chamber, and a rotating shaft is installed on the right side of the motor; a purification chamber is arranged on the lower portion of the interior of thebody, a plurality of biological purification films are evenly distributed in the purification chamber, a spiral heat exchange pipe is arranged in the purification chamber, the feeding pipe is connected with the left side of the spiral heat exchange pipe, and the right side of the spiral heat exchange pipe is connected with a discharging pipe. Waste heat of sewage can be recycled through the arranged spiral heat exchange pipe, and more energy is saved and more environment is protected.

The invention discloses a spiral type low elevation greenbelt capable of efficiently reducing runoff pollutants,belonging to the field of rainwater pollution control. The spiral type low elevation greenbelt capable of efficiently reducing runoff pollutants mainly comprises the spiral type low elevation greenbelt and a reverse cone-shaped water retaining filtering wall, wherein the spiral type low elevation greenbelt is composed of a spiral type plant zone and a low elevation greenbelt bottom plant zone; the water retaining filtering wall is composed of 2-3 layers of stone grains made from different materials from outside to inside. The reverse cone-shaped water retaining filtering wall in the spiral type low elevation greenbelt can preliminarily intercept and filter the runoff pollutants seeped from the periphery; in combination of the design for the shape and slope of the spiral type plant zone, under the effect of gravity, the rainwater and the upstream direct surface runoff water entering the low elevation greenbelt all spirally flow and infiltrate, so that the seepage time and the seepage path of the incoming water can be greatly prolonged and the capability of the low elevation greenbelt to reduce the upstream runoff pollutants can be promoted. According to the spiral type low elevation greenbelt, the hydraulic load caused by initial rainwater runoff pollution can be effectively relieved, the downstream water-draining pressure can be reduced, and the spiral type low elevation greenbelt has obvious social, environmental and economic benefits.

The invention relates to the technical field of sewage treatment, and discloses a split-flow sewage treatment equipment with a buffer function, which includes a casing, a water inlet is opened on the top of the casing, and a connecting rod is fixedly connected to the inner wall of the casing. Both the front and the back of the housing are fixedly connected with bearings, and a rotating rod is fixedly connected between the inner rings of the two bearings. The surface of the rotating rod is sleeved with a shunt roller, and the bottom of the shunt roller is in contact with the connecting rod. The inner wall of the casing is symmetrically provided with a splitter plate with the vertical center line of the casing as the center of symmetry, and the top of the splitter plate has a hole. The split-flow sewage treatment equipment with buffer function has a simple structure and is easy to use. It divides the sewage flow into and out of the treatment, which greatly improves the efficiency of sewage treatment, and can also minimize the impact of sewage water flow. Because the impact force is too large to cause damage to the equipment, the sewage treatment machine works more stably.

The invention discloses an air micro-nano particles-filtering and purifying device. The device comprises an upper cover, a housing body, a filtration device arranged in the housing body, an air blower, a rotating air-outlet device and a base, wherein the housing body adopts a cylindrical form; the upper cover is arranged at the upper part of the housing body; an air inlet zone is arranged at the lower part of the housing body; the filtration device is arranged inside the housing body; a purification chamber is arranged inside the filtration device; the base is arranged at the bottom of the purification chamber; the air blower is arranged on the inner side of the purification chamber; a groove is formed in the lower surface of the base; a foldable handle is arranged inside the groove; the foldable handle is fixedly connected with the rotating air-outlet device arranged above the upper cover through a rotating shaft on the air blower. The device is simple and compact in structure and easy to operate and can effectively remove the pollutants in air; the device is low in power consumption and saves electric energy; with high purification efficiency, the device can realize air purification without using various catalysts, so as to significantly reduce production cost; the device is wide in application range.