34results about How to "Good air filtration" patented technology

The invention discloses an air filtration glass fiber cotton composite material of series F5-F9. The air filtration glass fiber cotton composite material comprises non-woven cloth and a glass fiber cotton layer combined on the surface of the non-woven cloth through an adhesive material, wherein the non-woven cloth is 0.05-0.1mm thick; the glass fiber cotton layer is 0.25-1.5 mm thick and consists of glass fiber cotton with the diameter of 0.75-1.25 microns; the adhesive material is acrylic resin. A method for preparing the composite material comprises the steps of mixing and smelting proper amount of zinc oxide, borax, white sand, potash feldspar powder, pure alkaline, calcite, potassium carbonate and barium carbonate, performing primary fiber forming and then dragging the fibers through high-temperature and high-speed air flow to obtain the glass fiber cotton; dispersing the glass fiber cotton on the surface of the non-woven cloth, spraying glue, and drying to obtain the product. The air filtration glass fiber cotton composite material disclosed by the invention is high in intensity and high in filtration performance and has wide application prospects; due to the preparation method, the performance of the air filtration glass fiber cotton composite material can be further guaranteed.

The invention relates to an air filter for breathing and a filter element thereof, belonging to the field of health protection. By adopting the bionic principle simulating the nasal cavity of human body, the filter element is formed by stacking a filtering layer and a liquid absorbing layer at intervals, and is positioned between an air inlet channel and an air outlet channel which are arranged inside a shell of a filtering component; and the liquid absorbing layer of the filter element extends into filtrate inside a liquid storage cavity, and the air outlet channel of the filtering component is connected with a breathing mask. The air filter has good filtering effect and convenient use, is suitable for staff working in the environment of dust, smoke and waste gas, and can be taken as fire control preparation article for standby application.

The invention discloses an air filtering device with a self-cleaning function. The provided air filtering device comprises an air cleaning device and a filtering strip cleaning device. The air cleaning device comprises a dirty air inlet, an air compressor, an air input pipe, an air mixer and left and right filters. The filtering strip cleaning device comprises a clean air inlet, an air sterilizer, a fan and a dust box. The air compressor blows dirty air from the dirty air inlet into the air input pipe. The air mixer shunts the dirty air to the left and right filters for filtering and purifying. When the air compressor detects that the air pressure in the air compressor is larger than the preset air pressure, the fan blows clean air from the clean air inlet to the air sterilizer for sterilization, the clean air after sterilization blows the air filtering strip in the dust box through strong force and self-cleaning of the filters is carried out. The air filtering device can carry out self cleaning of filters, and achieves an effect of keeping the filters clean without replacing of the filters.

The invention discloses a rotary water curtain forming mechanism. The rotary water curtain forming mechanism comprises a first water spraying pipe and a plurality of water curtain generators which are installed at the upper end of the first water spraying pipe and connected in series in the longitudinal direction. When the rotary water curtain forming mechanism works, water flows into the first water spraying pipe, flows into lower pipe portions of the water curtain generators in sequence, and flows out of an upper portion of each water curtain generator to enter the next adjacent water curtain generator. Part of the water is sprayed out from an annular water discharging seam when flowing to the next water curtain generator, the sprayed water can flow onto an inwardly concave inverted-cone-shaped water curtain forming wall along the outer wall of each lower pipe portion, and a small part of water is sprayed out of flow guide spouts along flow guide grooves to form water curtains with wrinkles. In addition, when water passes through middle pipe portions, a small part of water is sprayed out of water spraying nozzles to drive the water curtain generators to rotate clockwise, and thus the multiple layers of rotary water curtains with the wrinkles are formed between the upper edge of a flow guide barrel and an annular air inlet channel.

The invention discloses a method for preparing photocatalytic air purification rod-like titanium dioxide particle composite fibrofelt. The method comprises the following steps: preparing a titanium dioxide precursor solution; dispersing the photocatalytic nanoparticles with deionized water, carrying out ultrasonic oscillation to obtain a dispersion liquid, impregnating the fibrofelt in the dispersion liquid for ultrasonic treatment, and performing drying; and putting the fibrofelt into a titanium dioxide precursor solution, and then putting the fibrofelt into a microwave rapid reaction synthesizer for annealing to obtain the composite fibrofelt of which the fiber surface is uniformly coated with the rod-like photocatalytic composite nanoparticles. The titanium dioxide particles in a form of precursor mixed liquid are dispersed and attached to the surfaces of fibers, and photocatalytic particles are uniformly loaded and tightly coated with a special three-dimensional network structure of the composite fibrofelt, so that the specific surface area of original single superfine fibers is increased; and the contact area of the catalyst and bacteria and microorganisms and the number of active sites participating in oxidation-reduction reaction are increased, microbial particles in air are captured more efficiently to achieve rapid photocatalytic response, and photocatalytic antibacterial inactivation is achieved.

A method for preparing composite nanofibers includes the following steps: providing an electrospinning solution which includes polymethyl methacrylate or its derivatives, chitosan, oligomer adsorbent and a solvent, and the solvent including formic acid; and forming a plurality of nanofibers by performing electrospinning on the electrospinning solution. The invention also provides the nnaofibers with the diameter less than 250nm prepared by the method. The nanofibers prepared by the invention method have thinner diameter, and a mask with a good air filtration effect can be prepared without additionally applying electrostatic treatment to a basic layer or adding active carbon, and the preparation cost is saved.

The invention discloses an air conditioner purification filter screen and an air conditioner; the air conditioner purification filter screen comprises a filter main body and a frame for fixing the filter main body, the filter main body is formed by superposing, compounding and pleating an antibacterial and antiviral non-woven fabric and electret melt-blown non-woven fabric, the antibacterial and antiviral non-woven fabric is formed by polymer fibers with the surfaces loaded with silver-loaded copper zeolite. Therefore, the air conditioner purification filter screen has antibacterial and antiviral performance and fine particulate matter filtering performance, the air filtering quality can be remarkably improved; meanwhile, breeding of microorganisms on the filter screen can be effectively avoided, the service life of the filter screen is prolonged, secondary pollution to indoor air is avoided, indoor air quality is destroyed, and human health is affected.

The invention discloses a formula of a polyurethane foaming product with a good air filtering effect. The formula comprises isocyanate, polyether, glycerol, a catalyst, a flame retardant, a modified reinforced fiber net, an auxiliary additive, isopropanol, a binder, palygorskite and sepiolite. Bamboo fibers, carbon fibers and a filter screen pipe are interwoven to form a mixed weaving fiber net structure. A plant leaf and stem extracting solution in the soaking solution enters pores of the mixed woven fibers; air entering the mixed weaving fiber net structure is purified and deodorized; a composite salt solution is used as a cosolvent, so that the plant leaf and stem extracting solution can be accelerated to enter pores of the mixed woven fibers, the modification speed is increased, alkaline metal ions contained in the composite salt solution can play a role in sterilization and disinfection, and the filtering effect is optimized; palygorskite and sepiolite are added into a finished polyurethane foaming product, impurities in air are adsorbed by means of the unique layer chain structure characteristic and the nano scale hole channel microstructure of palygorskite and sepiolite, andthe filtering effect is better.

The invention discloses an improved filter gauze mask which comprises a gauze mask main body and ear hooks. A soft gasket is fixed at the edge of the gauze mask main body, and the inner side and the outer side of the gauze mask main body are provided with a first filter sheet and a second filter sheet respectively; the first filter sheet comprises a first non-woven fabric layer, a first HEPA filter screen layer, a first silver woven mesh layer, a Chinese herbal medicine layer, a second silver woven mesh layer, a second HEPA filter screen layer and a second non-woven fabric layer which are sequentially fixed, wherein the Chinese herbal medicine layer can prevent a cold and comprises a gauze bag and granular Chinese herbal medicines placed in the gauze bag; the second filter sheet comprises an aerogel plate, first bamboo fiber and second bamboo fiber cloth, wherein the first bamboo fiber and the second bamboo fiber cloth are fixed to the obverse side and the reverse side of the aerogel plate respectively; the outer side of the first filter sheet and the outer side of the second filter sheet are both fixed with the gauze mask main body through hook and loop fasteners, the first filter sheet and the second filter sheet are each shaped like a bowl, a bowl-shaped groove used for being connected with the mouth of a human body in a butt-joint mode is formed in the inner side of the filter gauze mask, and the soft gasket is located at the edge of the bowl-shaped groove. The improved filter gauze mask is very easy and convenient to disassemble and assemble and has the excellent filter effect.

The invention discloses a water curtain forming device. The water curtain forming device comprises a first spray pipe and a plurality of water curtain generators which are connected to the upper end of the first spray pipe in series in the longitudinal direction. When the water curtain forming device operates, water flows into the first spray pipe, sequentially flows into the lower pipe portion of each water curtain generator and flows out of the upper pipe portion of the water curtain generator to the next adjacent water curtain generator; and a part of the water is sprayed out of an annular water outlet gap when the water flows to the next water curtain generator, and the sprayed water can flow to an inward-concave inverted-cone-shaped water curtain forming wall along the outer wall surface of the lower pipe portion and is sprayed out through the water curtain forming wall to form a water curtain.

The invention discloses an air filter of an engine. The air filter comprises an upper casing and a lower casing, wherein a filtering element is arranged in the middle part of a filtering cavity; the periphery of the filtering element is fixedly arranged in the filtering cavity through a fixing device; the fixing device comprises a vibration bin and an elastic skirt; a hollow dust dropping plate is arranged in the filtering cavity and is positioned under the filtering element; one end of the dust dropping plate is fixedly connected with the wall surface of one side of the lower casing to form a support end, and a gap is reserved between the other end of the dust dropping plate and the wall surface of the other side of the lower casing to form a free end of the dust dropping plate. The air filter has the advantages that by designing the vibration bin, dust and impurities adhered onto the filtering element can fall down, and the problem of blockage of the filtering element by the dust is solved; by arranging the dust dropping plate, when the noise is reduced, the dust falling from the filtering element due to vibration can be collected, the use cycle of the filtering element is prolonged, and the filtering element does not need to be frequently replaced; the self-cleaning capacity of the air filter is improved, and the air filter gas good air filtering capacity.

The invention discloses a low-cost and environment-friendly type meltblown polypropylene electret air filter material. The low-cost and environment-friendly type meltblown polypropylene electret air filter material comprises raw material components in parts by weight as follows: 50-60 parts of polypropylene, 9-16 parts of silicon monoxide, 11-17 parts of powdered activated carbon, 1-4 parts of a 3-aminopropyltriethoxysilane coupling agent, 0.6-1.3 parts of glacial acetic acid, a proper amount of deionized water, 1-2.5 parts of low-density polyethylene wax, 0.5-2 parts of antioxidant 1010, 0.7-1.4 parts of a titanate coupling agent, 2-5 parts of peanut hulls, 3-5 parts of zeolite powder, a proper amount of petroleum ether and a proper amount of absolute ethyl alcohol. Silicon nanowires containing alpha-quartz are prepared and added to a meltblown polypropylene electret material, so that the material has excellent filter efficiency and a bacterial reproduction inhibiting function; the silicon nanowires treated with the silane coupling agent are supported by the activated carbon, the silicon nanowire supporting quantity of the activated carbon is increased, and the adsorption of hazardous substances in the air by the filter material is improved effectively.

The invention discloses an air filtering window. The air filtering window comprises a ventilation opening formed in a wall, wherein a window frame is fixed to the ventilation opening, multiple supporting columns are vertically fixed to the interior of the window frame side by side, each supporting column is sleeved with a supporting sleeve, and each supporting sleeve and the corresponding supporting column are connected through a rotating device; a ventilation column is arranged between each two adjacent supporting sleeves, a ventilation channel of a Y-shaped structure is arranged in each ventilation column, an air inlet and two air outlets are formed in each ventilation column, a filtering screen is fixed to the center of each ventilation channel, and filtering materials are stored in thefiltering screens; and multiple air bags are arranged in each ventilation channel, multiple air outlet holes are formed in each air bag, and the air outlet holes face the filtering screens. Comparedwith a traditional screen window, the air filtering window has fewer dead angles, so that cleaning is more convenient; the air filtering window has a good air purifying effect, and the device can be automatically cleaned, so that operation is more energy-saving; two effects of ventilation and sealing can be achieved at the same time; and no glass needs to be used, so that the structural strength is higher, and the air filtering window is not liable to be damaged.

The invention discloses a dust removing device for an air purifier. The device comprises a shell; the shell is provided with an intake end and an exhaust end; an electrostatic dust removing layer is arranged in the shell; a dust collecting net is arranged at the exhaust end; the dust collecting net is corrugated; folding lines of corrugations are perpendicular to a mounting surface of the dust collecting net; an absorbing material is sprayed to a corrugated surface of the dust collecting net; the absorbing material is prepared by mixing the following raw materials in parts by weight: 5-10 parts of oxidized graphene, 1-3 parts of carbon nanotube, 2-5 parts of titanium dioxide chromium phosphate compound, and 0.1-2 parts of silver oxide; the electrostatic dust removing layer comprises a fixed electric conducting plate and a high-pressure dust removing device; multiple through holes are arranged on the fixed electric conducting plate; electric conducting rods are arranged between adjacent through holes, and are perpendicular to the fixed electric conducting plate; the diameters of the electric conducting rods are gradually reduced; the end parts of the electric conducting rods are needle-shaped; threads are arranged on the electric conducting rods; the high-pressure dust removing device is provided with multiple columnar ventilation channels; the center lines of the columnar ventilation channels are overlapped with the center lines of the electric conducting rods; and the electric conducting rods are positioned in the columnar ventilation channels.