257results about How to "Play the role of purifying the air" patented technology

The invention relates to a preparation method for environment-friendly type tile stocks. The preparation method is characterized in that: besides wood pulp fibers, a plurality of different fibrous raw materials and functional additives are added in the stuff of the tile stocks in the preparation process; and the environment-friendly type tile stocks are prepared through the operations of beating, paper making, squeezing, drying and reeling. Compared to common wallpaper, the tile stocks provided in the invention have the following advantages: the tile stocks have the functions of energy saving and heat insulation and can release negative ions and far infrared rays at the same time, thereby purifying air as well as benefiting health of human bodies.

A heat pump coupling contraflow type liquid-desiccant central ventilation system and control method thereof comprise a heat pump system and a liquid-desiccant and fresh air regeneration processing system, wherein the heat pump system comprises a compressor, a four-way directional control valve, a condenser, an evaporator and a throttle member; the liquid-desiccant and fresh air regeneration processing system comprises a fresh air processing module, a liquid regeneration module, a heat exchanger and a liquid pump; both the fresh air processing module and the liquid regeneration module are serially connected with the pipes by the two liquid heat exchangers through a liquid pool. The fresh air processing module is arranged in an indoor air inlet; the liquid regeneration module is arranged in an indoor air outlet to recycle the energy of the indoor exhaust wind. The invention adopts liquid-desiccant to process the fresh air of the air conditioner and removes the dust and the bacteria in the air through spraying the liquid so as to purify the air. The system can recycle the energy of the indoor exhaust wind, which reduces the energy for processing the fresh air; the heat pump is used for providing energy for the liquid to make use of the low-grade heat source.

The invention discloses a coating containing tea dust and tea polyphenol. The coating is composed of water, waterborne emulsion, titanium dioxide, a mildew preventive, a dispersing agent, a deforming agent, a pH regulator, a coalescing agent, a thickening agent, the tea dust and the tea polyphenol. Preferably, the coating is composed of 20-45% of water, 20-50% of waterborne emulsion, 10-25% of titanium dioxide, 1-5% of tea dust, 1-5% of tea polyphenol, 0.1-0.5% of deforming agent, 0.2-0.6% of dispersing agent, 0.1-0.4% of pH regulator, 0-3% of coalescing agent, 0-2% of thickening agent and 0-0.1% of mildew preventive. The tea dust and the tea polyphenol are added into the coating, so that the waste tea dust is reused on the one hand, and environment pollution can be prevented on the other hand; the coating prepared by the invention not only can be used for killing bacteria of the coating and bacteria generated in the preparation process, but also can be used for inhibiting and killing indoor bacteria when being applied to indoor decoration; and in addition, the coating can also be used for removing formaldehyde in wood and indoor formaldehyde so as to play a role of purifying air.

The invention discloses a dust preventing agent, which includes components of water or deionized water, acrylic acid, methacrylate, acrylamide and initiator, wherein proportion of each component is: 90-120 quotient of water or deionized water; 7-12 quotient of acrylic acid or 2-4 quotient of methyl methacrylate, ethyl methacrylate or propyl methacrylate; 2-4 quotient of acrylamide; 0.05-0.1 quotient of persulfate initiator; 0.03-0.05 quotient of crosslinking agent and 5-10 quotient of neutralizer which are also added. The dust preventing agent is thick liquid and is used after diluting, when being sprayed, the dust preventing agent can adsorb dust in air and combine with granule on ground surface to form film structure, and the dust preventing agent also possesses water-absorbing quality and water-retention property to prevent dust flying and clean air.

The invention discloses an ice-storage cold-heat pump coupled multi-stage total-heat recovery fresh air processor, belonging to the energy source utilization technology and the air adjusting field. The processor consists of an air exhaust part, a fresh air processing part, a total-heat recoverer and a heat pump system. The heat pump system comprises a compressor, a condenser, a condensation heat recoverer, an evaporator and an expansion valve. The indoor low-temperature low-humidity exhaust air is used for exhausting the condensation heat quantity of a refrigerating system in summer; and the indoor high-temperature high-humidity exhaust air is used for exhausting the evaporation cold quantity of the refrigerating system in winter. The total-heat recoverer performs multi-stage total-heat recovery of fresh air and exhaust air so as to improve the heat recovery efficiency. The heat pump system provides necessary cold quantity and heat quantity to a fresh air processing system. The ice-storage cold provides the low-temperature frozen water to completely dehumidify the fresh air so as to achieve lower moisture content.

The invention discloses an artificial board with added tea dust and tea polyphenol and a manufacturing method thereof. The artificial board with the added tea dust and the tea polyphenol is composed of wood raw materials, the tea dust, the tea polyphenol, adhesive, fire retardant and antiseptic agents. Preferentially, the artificial board with the added tea dust and the tea polyphenol is composed of the wood raw materials 1 m3, the tea dust 0.05-0.3 m3, the tea polyphenol 0.5-3Kg, the adhesive 5-20 Kg, the fire retardant 0-3 Kg and the antiseptic agents 0-3 Kg. The manufacturing method of the artificial board with the added tea dust and the tea polyphenol comprises the steps of processing the wood raw materials, pre-steaming, drying, mixing the materials, and forming of the artificial board. The artificial board manufactured with the method can not only kill bacteria of the artificial board and bacteria produced in a manufacturing process, but also can inhibit and kill indoor bacteria when the artificial board is applied to interior trim and furniture, and meanwhile, the artificial board with the added tea dust and the tea polyphenol can play a role in purifying air due to the fact that the artificial board can clear methanal in wood and in a room.

The invention discloses an air purification humidifier, which comprises a casing and a base, wherein an air purification device, an air purification channel and a motor are arranged in the casing; an air inlet and an air outlet are arranged on the casing; a fan is arranged between the air inlet and the air purification channel; an output shaft of the motor is in driving connection with a power input end of the fan; the air purification device comprises a box body, an air purification water storage cavity, a water delivering mechanism and a water sprinkling mechanism; the box body is detachably connected with the casing; the air purification water storage cavity is arranged at the lower part of the box body; the water delivering mechanism and the water sprinkling mechanism are respectivelyarranged in the air purification channel and are fixedly connected with the box body; a water inlet of the water delivering mechanism is communicated with the air purification water storage cavity; and a water outlet of the water delivering mechanism is communicated with the water sprinkling mechanism. The air purification humidifier also comprises a rotating shaft; the upper part of the rotatingshaft is fixedly connected with a center hole of the fan; and the lower end of the rotating shaft is connected with a power input end of the water delivering mechanism.

The invention relates to an air purifier used for deeply purifying indoor air. The air purifier is simple in structure and capable of deeply and effectively purifying the indoor air. The air purifier comprises an outer shell (1), an air inlet (2), an air outlet (3) and a fan (7) arranged in the outer shell (1), the air inlet (2) and the air outlet (3) are formed in the outer shell (1), nano-photocatalyst coatings (15) are arranged on blades of the fan (7), a nano-photocatalyst coating (15) is arranged on the inner wall of the outer shell (1), a plurality of ultraviolet lamp tubes (16) are arranged in the inner wall of the outer shell (1), and the ultraviolet lamp tubes (16) are arranged at the positions close to the air inlet (2). The whole air purifier is simple in structure and easy to mount and dismount, can achieve the purification function, and meanwhile can achieve the function of humidifying and heating the air.

The invention provides a graphene modified composite mesoporous carbon microsphere air purifying preparation. A certain amount of beta-cyclodextrin is added to thin-layered nano-SiO2 particles covering the surfaces of obtained micro-SiO2 particles, a certain quantity of obtained RGO / TiO2 nanoparticles is added simultaneously, -OH, -COOH, C-O-C and C=O oxygen-containing functional groups rich on the surface of graphene are adsorbed by and bonded with the RGO / TiO2 nanoparticles on the basis of the molecular recognition characteristic of beta-cyclodextrin, then a certain amount of CTAB (cetyltrimethylammonium bromide) surfactant is added, CTAB serving as a micelle stabilizer can stop the RGO / TiO2 nanoparticles from further hydrolysis and growth, and finally, the novel air purifying preparation adopting RGO / TiO2 supported by carbon microspheres with a mesoporous shell structure is obtained. With adoption of the scheme, the purity is high, RGO / TiO2 supported by the carbon microspheres with the mesoporous shell structure in powder is better in bonding performance, uniform in distribution and controllable in dimension at mesopores, and the air purifying preparation can be used for purifying polluted air and removing dust in a haze environment as well as photo-catalytically degrading and separating nitric oxide, sulfide or other organic pollutants in the polluted air.

The invention provides an air purifying street lamp with a prominent air purifying effect. The air purifying street lamp comprises a power supply, a light source and a lamp post, wherein the light source is connected to the top of the lamp post, and is connected with the power supply. The air purifying street lamp is characterized by further comprising an air purifying device; the air purifying device is connected to and surrounds the bottom of the lamp post, and is connected with the power supply; the air purifying device comprises a shell, an air extracting pump, a plurality of filter screens and a plurality of negative ion filters; the plurality of filter screens are detachably connected to the inner wall of the shell; the negative ion filters are arranged between the adjacent filter screens; and the air extracting pump is arranged below the plurality of filter screens, and is connected to the inner wall of the shell. The air purifying street lamp largely reduces the energy consumption, and the service life of the air purifying device is prolonged. The air purifying street lamp has a delicate structure, and also effectively solves the problem of larger floor area of a large air device.

The invention discloses a negative oxygen ion dry powder paint, belonging to the technical field of paints. The paint comprises the following components in percentage by mass: 25-35% of ash calcium powder, 6.2-8.0% of diatomite, 4.5-6.5% of negative ion additive, 1.5-5.0% of antimicrobial agent, 0.15-0.80% of talcum powder, 0.15-0.80% of kaolin, 0.15-0.50% of wollastonite, 0.05-0.15% of surfactant, 0.55-1.5% of redispersible latex powder, 1.2-1.8% of light calcium carbonate powder, 0.15-0.50% of lithopone and the balance of heavy calcium carbonate powder. The paint is capable of efficiently absorbing formaldehyde and other harmful gases and naturally and enduringly releasing negative ions, has the characteristics of high mildew resistance, high bactericidal capacity and favorable air permeability, and can adjust the humidity of indoor air. The coating has the characteristics of favorable strength, favorable toughness, favorable scrubbing resistance and the like.

The invention discloses an energy recovery double-cold-source high-enthalpy-difference energy storage fresh air handling unit. The unit comprises an air conditioning system, a heat pump system and an energy storage system; the air conditioning system includes a fresh air machine, an exhaust fan and an air total-heat recoverer; the heat pump system includes an annular close-connected compressor, a condensation heat recoverer, a condenser, an expansion valve, a direct expansion evaporator and an energy storage evaporator; the energy storage system includes an energy storage tank and a high-entralpy-difference surface cooler connected with each other; and the condensation heat recoverer, the direct expansion evaporator and the high-entralpy-difference surface cooler are respectively arranged on a fresh air channel. The unit largely reduces the operation cost by using the peak-valley price, provides low-temperature frozen water needed by deep dehumidification, increases the energy-efficiency ratio of the heat pump system through recovering the condensation heat, can improve the quality of indoor air through low-temperature cold sources and increment of the fresh air quantity, reduces the fresh air conditioning energy consumption by exhausting and heat recovery, and facilitates to save the energy and reduce the environmental pollution.

The invention relates to a heat pump regeneration rotating wheel type total heat recovery humidity-adjusting and temperature-controlling fresh air handling unit and a control method of the fresh air handling unit, belonging to the field of energy utilization technology and air conditioning. The fresh air handling unit consists of an air-air heat recovery unit, a dehumidification rotating wheel, an air exhaust part, a fresh air processing part and a heat pump system, wherein the heat pump system comprises a compressor, a condenser, a four-way reversing valve, a condenser, a condensation heat recoverer, an evaporator and a throttling part; the air-air heat recovery unit is utilized to carry out preliminary full heat recovery on new exhaust air, the condensation heat quantity of the heat pump system is utilized to carry out regeneration on the dehumidification rotating wheel, and an exhaust fan brings away the moisture adsorbed by the dehumidification rotating wheel; the evaporator of the heat pump system is utilized to carry out forecooling dehumidification on the fresh air so as to further carry out adsorption type dehumidification on the fresh air through the dehumidification rotating wheel; and a humidifier of the fresh air processing part is utilized to carry out humidification on the dry fresh air. The heat pump system provides the required cold quantity and regenerated heat quantity for a dehumidification system.

The invention relates to the technical field of total heat recovery, in particular to a rotating wheel type total-heat-recovery fresh air unit which comprises a unit shell. The unit shell is provided with a fresh air inlet cavity, a recovery cavity, an air supply cavity, an air return cavity and an exhaust cavity. A primary filter and a medium-efficiency filter are sequentially arranged in the fresh air inlet cavity from outside to inside. An energy recovery rotating wheel is arranged in the recovery cavity. A second heat exchanger, a condensation heat recoverer, a humidifier and a blower are sequentially arranged in the air supply cavity from inside to outside. A compressor and a four-way reversing valve are sequentially arranged in the air return cavity from outside to inside. A first heat exchanger and an exhaust fan are arranged in the exhaust cavity. The rotating wheel type total-heat-recovery fresh air unit has the beneficial effects that fresh air and exhausted air are subjected to total heat recovery firstly through a rotating wheel heat recovery device, then an evaporator of a heat pump system is used for cooling and dehumidifying the fresh air, a condenser of the heat pump system is then used for carrying out proper heating treatment, and therefore the risk of moisture condensation caused by the too low air outlet temperature is avoided. In addition, the structure is simple, design is reasonable, and manufacturing cost is low.

The invention discloses a diatom mud negative ion dry powder coating material, and belongs to the technical field of coating materials. The diatom mud negative ion dry powder coating material comprises the following components by mass: 22.8-28.9% of ash-calcium powder, 12.2-14.2% of diatom mud, 5.5-7.2% of a negative ion additive, 3.1-4.8% of an antibacterial agent, 0.8-1.5% of anatase type titanium dioxide, 0.76-0.92% of talc powder, 0.76-0.92% of aluminum silicate, 0.37-0.52% of kaolin, 0.37-0.52% of wollastonite, 0.18-0.32% of a surfactant, 0.76-0.92% of redispersible latex powder, 0.0030-0.0055% of modified seaweed glue powder, and the balance of heavy calcium powder. The diatom mud negative ion dry powder coating material of the present invention has characteristics of efficient absorption of formaldehyde and other harmful gases, natural and long-lasting release of negative ions, strong anti-mildew and bactericidal ability, good gas permeation, indoor air humidity adjusting, good coating strength, good coating toughness, good washing resistance, and the like.

The invention discloses a twin-stage heat recovery large enthalpy difference dehumidification fresh air conditioner, and belongs to the field of energy utilization technology and air conditioning. The twin-stage heat recovery large enthalpy difference dehumidification fresh air conditioner comprises a fresh air ventilator, an exhaust fan, an air-air heat recovery device and a large enthalpy difference surface air cooler. A unit is divided into a fresh air channel and an exhaust channel, the large enthalpy difference surface air cooler in the fresh air channel is used for cooling and more thoroughly dehumidifying fresh air, a total heat recovery device is used for recovering total heat of the fresh air and exhaust air, and the fresh air is pre-cooled. A sensible heat recovery device is used for heating the fresh air with low dew point temperature and passing the large enthalpy difference surface air cooler and reducing relative humidity relative to the high-temperature exhaust air, and the cooled exhaust air is beneficial to pre-cooling the fresh air. An energy storage water cooling system provides low-temperature chilled water, and the fresh air is more thoroughly dehumidified. By the aid of the dehumidification fresh air conditioner, the treated fresh air can reach low moisture content needed by an independent temperature and humidity control system, and the total load of the fresh air, total latent heat load and part of sensible heat load of indoor air can be borne.

The invention discloses a building construction site dust removal device convenient to move. The device comprises a device body and universal wheels. The left side of the device body is provided with a dust entrance, the left side of the dust entrance is connected to a dust suction inlet, the inside of the dust suction inlet is provided with a static electricity adsorption ring, the universal wheels are installed on the lower side of the device body, the right side of the dust entrance is connected to a dust collecting device, the inside of the dust collecting device is provided with a filter screen, the dust collecting device and an adsorption device are connected through a first connecting pipeline, the inside of the adsorption device is provided with an adsorption layer, the right upper side of the adsorption layer is connected to a gas outlet pipeline, the right side of the inside of the device body is provided with a water tank, the right side of the water tank is connected to a second connecting pipeline, the right side of the second connecting pipeline is provided with a spray header, and the center of the right part of the device body is provided with a lighting device. The building construction site dust removal device convenient to move is simple in structure and reasonable in design, and the device can be convenient to move through the universal wheels.

The invention discloses a negative ion-released antibacterial powdery paint, which comprises the following raw materials by mass percentage: 20-45% of epoxy resin, 20-45% of polyester resin, 0.7-1.2% of negative ion additive, 0.3-1.5% of nano silver antiseptic; 1.8-3% of functional auxiliary agent, 0-5% of promoter, 5-30% of filling material and 0.8-25% of pigment, wherein the sum mass percentage of the raw material is 100%. The prepared negative ion-released antibacterial powdery paint has the advantages that according to the characteristics of a base material, low solidification temperature can be realized, surface coating of a metal material and a non-metallic material can be satisfied, application scope is wide, negative ions can be effectively released, negative ion effect has long and effective unit function, sterilization effect is obvious, and each performance is excellent.

The invention provides an efficient fine-water-mist fire extinguishing aviation bomb used for forest surface fire. The efficient fine-water-mist fire extinguishing aviation bomb comprises a bomb body (2) and a bomb tail (6). The bomb body (2) is in threaded connection with the bomb tail (6). The bomb body (2) comprises a gas generator (1) and a water system fire extinguishing containing part (4), and the gas generator (1) and the water system fire extinguishing containing part (4) are both arranged in the bomb body (2). The gas generator (1) is in threaded connection with the head end of the bomb body (2). The bomb tail (6) is provided with a fine-water-mist spray head assembly (5) comprising a liquid guide pipe (3) and a spray head (12) provided with a pressure valve (11). One end of the liquid guide pipe (3) is connected with the spray head. The opening end of the liquid guide pipe (3) is arranged at the head end of the bomb body. According to the efficient fine-water-mist fire extinguishing aviation bomb used for the forest surface fire, a helicopter or aircraft release mode is adopted, so that a large number of the fire extinguishing aviation bombs are carried without the limitation of release altitude and fall in target fire areas accurately.

The invention provides an intelligent building indoor environment monitoring system and a monitoring method. The intelligent building indoor environment monitoring system comprises an indoor air environment monitoring cabinet, a push handle, a push rod, a dustproof cover, an alarm, an indoor air dehumidifying purifying box device, an air purifying heating box structure, a portable sampling test tube frame structure, a rotary air sterilizing lamp structure, a monitoring plate structure, movable wheels, a rubber block, a hoop, a sterilizing chamber, a humidifying chamber, a purifying chamber, astorage chamber and an installation bottom plate. The indoor air environment monitoring cabinet is connected to the middle position of the upper surface of the installation bottom plate through bolts.According to the intelligent building indoor environment monitoring system, by means of the arrangement of an activated carbon filtering net, an HEPA filtering net and a formaldehyde filtering net, harmful gas and peculiar smell in air are advantageously purified, a role of purifying the air is achieved, and the using function of the air environment monitoring system is also added; and by means of the arrangement of a handle, a test tube frame is advantageously and conveniently carried, the convenience of operation is improved, and indoor decoration materials are conveniently sampled.

The invention relates to an antibiosis healthy coating which is used as various paints and internal and external wall coatings. The coating is prepared through adding antibiosis material with a mass percent of 0.5-15 percent and tourmaline material with a mass percent of 1-25 percent into the prior coating. The invention has the functions of effectively preventing various bacteria from breeding on public occasions, killing bacteria falling onto the coating, simultaneously emitting negative ions benefiting human body much and purifying air. The invention has simple working procedure, convenient operation and low cost.

The invention discloses an aerated concrete block capable of adsorbing toxic and harmful gases and a preparation method of the aerated concrete block. The aerated concrete block is prepared from the following raw materials in parts by weight: 42-68 parts of yellow sands, 10-15 parts of nano black stones, 12-16 parts of a zeolite molecular sieve, 18-26 parts of allophone, 22-28 parts of wood dust, 15-20 parts of ground calcium carbonate powder, 26-34 parts of sea mud, 16-22 parts of attapulgite, 10-15 parts of alpha type semi-hydrated gypsum, 3-6 parts of carbomer resin, 1-2 parts of modified aluminum powder, 2-3 parts of sodium thiosulfate, 2-3 parts of zinc sulfate and 1-2 parts of azodiisobutyronitrile. The substances including the nano black stones, the zeolite molecular sieve and the like with outstanding physical adsorption functions are added into the aerated concrete block disclosed by the invention, so that the aerated concrete bock can adsorb harmful gases of formaldehyde, benzene compounds, sulfur oxide, nitrogen oxide, carbon monoxide, hydrogen sulfide, ammonia, isovaleric acid, methyl mercaptan, trimethylamine (fishy), TVOC (total volatile organic compounds) and the like to achieve a function of purifying air; and meanwhile, the aerated concrete block has the characteristics of high strength, good heat insulation and heat preservation properties, good sound isolation effect, heat resistance, moisture resistance, acid and alkali corrosion resistance and the like, and has a broad market prospect.

The invention discloses chicken manure fermented biological organic fertilizer. The chicken manure fermented biological organic fertilizer comprises the following components in parts by weight: 150 to200 parts of chicken manure, 20 to 27 parts of shrimp shells, 25 to 32 parts of crab shells, 80 to 120 parts of fermented base materials, 30 to 55 parts of wormwood ash, 18 to 29 parts of composite fungicide, 40 to 55 parts of gleditsia sinensis branches and leaves, and 12 to 18 parts of deodorizing fungicide. The invention also provides a preparation method of the chicken manure fermented organic fertilizer. The preparation method includes the following steps: pretreating materials, performing anaerobic fermentation, performing aerobic fermentation, mixing, drying, crushing, and preparing into a finished product. By the chicken manure fermented biological organic fertilizer, not only can the soil structure and the soil permeability be improved, but also heavy metal ions in the soil can be degraded, and the insect harm resistance of crops can also be improved; the odor and harmful bacteria in the chicken manure are removed by virtue of microorganism bacteria in the preparation process; the preparation method can shorten the fermentation period and improve the fermentation efficiency. The invention also provides an organic fertilizer fermentation apparatus, which can switch the material fermentation between an anaerobic environment and an aerobic environment at any time.

The invention relates to a photocatalytic multifunctional fiber material and a preparation method thereof, belonging to the technical field of materials. The invention mainly solves the technical problems that the decomposition rate of organic matters of the exiting fiber materials is low, the sterilizing and bacteriostatic effect is not obvious and the like. The fiber material is formed by polypropylene master batches and polypropylene slices. The preparation method comprises the following steps: converting tungstate into colloid; using rare earth oxide to prepare rare earth nitrate mixed solution; adding the colloid into the rare earth nitrate mixed solution and dripping dilute acid to form sol; adding catalyst promoter material in the sol to obtain wet gel; after drying and sintering the wet gel, conducting ultrasonic dispersion to obtain powder; adding dried polypropylene matrix, dispersing agent, coupling agent and defoaming agent in the powder and preparing polypropylene master batches through a screw extruder; and adding polypropylene slices in the polypropylene master batches and preparing the photocatalytic multifunctional fiber material through the screw extruder, a melt spinning technology and a deformation technology. The invention has the advantages of high organic matter decomposition rate, good sterilizing effect and the like.

The invention provides waterborne anti-corrosion and fireproof integrated paint and relates to building paint. The waterborne anti-corrosion and fireproof integrated paint comprises, by weight, 20-25 parts of waterborne epoxy resin emulsion, 25-30 parts of waterborne acrylic resin emulsion, 5-10 parts of flame-retardant filler, 3-5 parts of anti-corrosion filler, 10-13 parts of curing agent, 0.5-2 parts of dispersing agent, 0.5-0.8 part of defoaming agent and 10-15 parts of water. The waterborne epoxy resin emulsion and the waterborne acrylic resin emulsion serve as base body emulsion, so the paint has good corrosion resistance and high adhesion performance of the waterborne epoxy resin emulsion and also has good acid resistance, alkali resistance and ultraviolet resistance of the waterborne acrylic resin emulsion. The flame-retardant filler is free of toxin and harm, water serves as a solvent of the paint, the paint is nonflammable, easy to store and environmentally friendly, and the paint has dual effects of corrosion resistance and fireproofing.

The invention provides a negative ion mineral wool board and a preparation method thereof. The negative ion mineral wool board includes negative ion mineral powder which is loaded on attapulgite clayas the raw material for preparation of the mineral wool board. The method includes the following steps that the raw materials are weighed; the negative ion mineral powder is loaded on the attapulgiteclay; the attapulgite clay is calcined, activated, and ground; the negative ion mineral powder and the activated attapulgite clay powder are dissolved in water, mixed evenly and then subjected to ultrasound dispersion; the attapulgite clay loaded with negative ion mineral powder is filtered, dried and ground; a flocculant is diluted to a 10-40 mass% solution with water; the attapulgite clay loadedwith negative ion mineral powder, the flocculant aqueous solution, mineral wool fiber and starch are added into water and stirred evenly to obtain mixture slurry; the mixture slurry is formed, cut into large plates and dried to obtain semi-finished products; the semi-finished products are subjected to post-processing to obtain the finished products. The negative ion mineral wool board can releasenegative ions and play the role of purifying air.

The invention belongs to the field of non-woven fabric processing, and in particular relates to a piece of environment-friendly stock wallpaper which is characterized by being made of the following raw materials in parts by mass: 50-70 parts of bamboo pulp fiber, 10-25 parts of wood pulp cellulose, 15-25 parts of modacrylic fiber with chloride, 3-5 parts of sodium carboxymethylcellulose, 3-7 parts of nano bamboo charcoal fiber and 5-15 parts of inorganic packing. Compared with conventional ordinary wallpaper, the stock wallpaper has functions of flame retardancy and acid / alkali resistance, meets the low-carbon idea, has a function of purifying air, and is beneficial for health of human bodies.

The invention relates to a fresh air ventilation system. The fresh air ventilation system comprises a peripheral ventilation pipe, an intermediate ventilation pipe and fans, wherein the intermediate ventilation pipe is arranged in the peripheral ventilation pipe; and the fans are arranged at one end of the peripheral ventilation pipe and one end of the intermediate ventilation pipe, and are used for blasting air and exhausting the air. By the optimized design and the structure provided by the invention, indoor and outdoor two-way ventilation can be realized; heat exchange can be performed on the blast air and the exhaust air through the wall of the intermediate ventilation pipe; heat recovery can be realized; and energy consumption can be reduced.

The invention discloses a plant functional vehicle carpet and a preparation method thereof. The plant functional vehicle carpet contains plant functional polyester fibers, wherein the plant functionalpolyester fiber contains 0.1 to 1.5 percent of plant extract; wherein the plant extract is one or a combination of more of mint, valerian, lavender, wormwood and seaweed; the plant functional vehiclecarpet surface layer and the lining layer are both made of plant functional polyester fibers. The plant functional polyester filament yarn has high mechanical strength of the polyester fiber and miteand bacterium inhibiting performance of the plant extract, is good in bacterium inhibiting, deodorizing and abrasion resisting performance, has high elasticity, is not prone to pilling and contamination, does not carry static electricity or be stained with dust, and solves the problem that an existing carpet is not easy to clean. The carpet surface layer is soft and comfortable, the substrate layer is good in wear resistance, skid resistance and supporting effect, edge curling is not likely to happen, and practicability is higher.

The invention discloses a wall-surface paint for projection and a preparation method. The wall-surface paint comprises the following components of: polyurethane resin, graphene, nano titanium dioxide, silica sol, diatomite, white carbon black, nano calcium carbonate, talcum powder, attapulgite clay, defoaming agent, cosolvent and proper amount of water. The preparation method comprises the following steps of: weighing the polyurethane resin and the graphene, adding into a reaction kettle, and reacting to prepare graphene-modified polyurethane resin; then adding the nano titanium dioxide, the silica sol, the attapulgite clay, the defoaming agent, the cosolvent and the proper amount of water, stirring uniformly, and grinding till the particle size is below 20mum; and then adding the diatomite, the white carbon black, the nano calcium carbonate and the talcum powder, and after shearing, obtaining the wall-surface paint for projection. The wall-surface paint disclosed by the invention not only can provide better picture degree and viewing comfort level for projection, but also can provide places for writing and marking of speakers, can be easy for handwriting erasing, and has better application value.