35results 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 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 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 a mask capable of preventing fog on glasses. According to the technical scheme, the mask is characterized in that independent inhaling and exhaling flow passages are provided so that exhaled gas flows along the designed pass without flowing above the nose, and fogging of glasses is avoided accordingly; in order to prevent increase in inhalation resistance due to the designof the independent flow passages, a special breath assist is provided which comprises a chamber, an elastic balloon is arranged in the chamber and is connected with an exhaling tube, the chamber is connected with an inhaling tube, the exhaling tube is connected with an exhaling tube control device, the balloon enlarges when exhaling is performed via the exhaling tube, air in the chamber may be discharged into the inhaling tube for a user to breathe, the exhaling tube control device discharges the gas in the balloon after single breathing, external air enters the chamber under the action of pressure difference since the balloon diminishes, and assisted breathing is achieved accordingly. The mask of the invention can prevent fogging of glasses to maximum extent and can assist in breathing.

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 relates to the technical field of non-woven fabrics, and provides a method for preparing an antibacterial melt-blown non-woven fabric, comprising the following steps: (1) performing oxygen plasma treatment on a polypropylene non-woven fabric, and then grafting and modifying it to obtain Modified polypropylene non-woven fabric; (2) using propylene diamine and methyl methacrylate as raw materials, polymerized into an amino-terminated hyperbranched polymer, and then through the polycondensation reaction of carboxymethyl chitosan and amino-terminated hyperbranched polymer The prepared modified hyperbranched polymer; (3) adding the cupric chloride solution to the modified hyperbranched polymer aqueous solution, dripping the sodium borohydride solution under nitrogen protection and ice bath conditions, and adding the modified polymer solution after the reaction. The propylene non-woven fabric is immersed in the modified hyperbranched polymer aqueous solution, and dried to obtain an antibacterial melt-blown non-woven fabric. The present invention solves the problem that the prior art melt-blown non-woven fabric has only high-efficiency filtering effect and no antibacterial property.

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.