46results about How to "Anti-mosquito" patented technology

The invention discloses a production method of multi-functional composite fabric and belongs to the technical field of production methods and technologies of special clothes processed fabric. To solve the technical problem above, the following technical scheme is adopted. Provided is the production method of composite multi-functional fabric. The method comprises the steps of A, spinning and weaving; B, dyeing and conducting ultraviolet-proof arrangement; C; conducting flame-retardant arrangement; D, conducting antibacterial and anti-mosquito treatment; E, conducting three-anti treatment, namely oil-proof, waterproof and soil resistant treatment. The multi-functional composite fabric meanwhile has all the following 8 functions: flame retardancy, destaticization, oilproofness, soil resistance, waterproofness, antibacterial and mosquito repellence. Actual demands are basically met, and a safe and reliable guarantee for users of special environment is provided.

The invention relates to a sun-shading and anti-burglary curtain and scroll screen integrated aluminum alloy casement window. The aluminum alloy casement window is characterized in that: the upper end of the aluminum alloy casement window (9) is provided with an aluminum alloy shutter box (1); a first scroll motor (3), a second scroll motor (5) and an anti-burglary aluminum alloy winding drum (4) are arranged in the aluminum alloy shutter box (1); an anti-burglary aluminum alloy louver (7) is wound on the first scroll motor (3), and a fiberglass window screen (6) is wound on the second scroll motor (5); the lower end face of the aluminum alloy shutter box (1) is fixedly connected with the upper end face of the aluminum alloy casement window; and the first scroll motor (3) and the second scroll motor (5) are connected with both end walls of the aluminum alloy shutter box (1) through a scroll respectively. The invention has the advantages that: the aluminum alloy casement window has various functions of prevention of burglary, strong wind resistance, sun shading and prevention of mosquitoes and flies, has a compact structure, is convenient to decorate, can be manually operated and is not limited by power failure; and the aluminum alloy shutter box is filled with a heat insulating material, has the functions of insulating heat and reducing noise, has a good energy saving effect and meets the national energy saving requirements.

The invention discloses anti-mosquito environment-friendly wallpaper, made from, by weight, 20-30 parts of used clothes, 10-20 parts of waste wood, 10-20 parts of straws, 2-5 parts of nano zinc oxide, 1-2 parts of chitosan, 2-8 parts of sodium sulfate, 10-25 parts of sodium hydroxide, 5-10 parts of cassava starch, 2-5 parts of butyl acetate, 1-2 parts of titanate coupling agent, 1-3 parts of cationic polyacrylamide, 1-2 parts of sodium cocoyl glycinate, 1-2 parts of azodiisobutyronitrile, 60-100 parts of deionized water, 20-30 parts of ethyl acetate, and 5-10 parts of Chinese herbal powder; the anti-mosquito environment-friendly wallpaper employs the used clothes, waste wood and straws as fiber bases, resources are effectively utilized, resource waste is avoided, and environment protection is achieved; the anti-mosquito environment-friendly wallpaper using the Chinese herbal powder as a plant material can dispel mosquitoes but is harmless to human bodies, and can soothe body and mind and calm the mind since containing nerve-soothing ingredients.

The invention discloses a folding type air filtering screen window / screen door which comprises a window door frame. A singly opened or oppositely opened foldable honeycomb type air filtering screen is installed on the window door frame. The honeycomb type air filtering screen comprises two layers of filtering surfaces, the joint of the two layers of filtering surfaces is provided with a plurality of hexagonal honeycomb connecting channels, and the filtering surfaces are formed by compounding an outer plane framework material layer and an inner efficient low-resistance air filtering material layer; or the filtering surfaces are formed by compounding an outer plane framework material layer, a middle efficient low-resistance air filtering material layer and an inner plane framework material layer. The folding type air filtering screen window / screen door is made by adopting the honeycomb type air filtering screen, can efficiently intercept fine particles such as PM2.5 without affecting air circulation, have multiple functions such as energy saving, noise prevention, heat insulation, purification and mosquito prevention, can replace a conventional screen window / screen door, filter outdoor polluted air and then introduce the air indoors, and maintain indoor air circulation.

This invention relates to photoelectron air purifying and antisepsis fan, which in detail makes air pass active carbon net for filtering and sends the ultraviolet by extreme ultraviolet tube to kill virus and mildew and adds the anion quantity in air. The fan structure comprises air draft wheel, electric motor, transformer, circuit board, control switch, and indication lamp. The machine gas-in mouth is located with active carbon filter net, air accumulation rack and extreme ultraviolet tube and the gas-out mouth is located with negative electrode high voltage carbonization fiber wire.

The invention discloses a technology preparing method for keeping the original color of a bamboo chip and preventing mosquitoes, and relates to the field of the bamboo preparing technology. The problems that in existing bamboo weaving, when manufacturing is conducted after weaving, immersing or moth preventing and corrosion preventing treatment needs to be conducted, meanwhile, the original color of the bamboo cannot be kept, and a woven bed mat and the like cannot prevent the mosquitoes or corrosion or the like for a long time are solved. Through selection of a solid copper sulfate solution and an initiating agent, the bamboo chip is helped to keep the primary color, the strength and tenacity of the bamboo chip can be improved, the bamboo chip is immersed in the traditional Chinese medicine formed through decocting of cablin patchouli, golden larch barks, fructus toosendan, alumen, camphor, tomato leaves and tomato stems, so that the bamboo chip prevents the mosquitoes and corrosion and prevents the body disease. According to the technology preparing method, the color of the bamboo chip can be kept for a long time, and when the bamboo chip is woven into bedding articles, the mosquito preventing and corrosion preventing effects can be achieved effectively.

The invention discloses a door and window ventilation mullion. The door and window ventilation mullion comprises a ventilation mullion main body, wherein a reinforced lining is arranged in the ventilation mullion main body; an air inlet cavity, a first middle cavity, a second middle cavity, an air filtering material cavity, a first ventilation grid, a second ventilation grid and a third ventilation grid are arranged in the ventilation mullion main body; an outdoor air outlet is formed in the outer side of the air inlet cavity; a vertical rainproof louver is arranged in the air inlet cavity; sound-insulating cotton is arranged in the first middle cavity; a sliding grid sealing plate is arranged in the second middle cavity; a control switch is arranged in the air filtering material cavity; an indoor decorative cover is arranged on the outer side of the air filtering material cavity; an indoor air inlet is formed in the indoor decorative cover; an air filtering material is arranged on the inner side of the indoor air inlet; and a glass stop block and a glass stop are arranged on the two outer sides of the ventilation mullion main body respectively. The door and window ventilation mullion serving as a ventilation mullion is applied to doors and windows, can achieve the bearing, reinforcing, grid dividing and decorative effects of the door and window mullion, and also can realize micro-ventilation, fog and haze resistant, rainwater-proof, anti-mosquito and noise-reducing functions.

The invention discloses nutritional soil for pot culture. The nutritional soil is prepared from the following raw materials in parts by weight: 10 to 20 parts of vineyard pruned branches, 8 to 15 parts of grape peels, 13 to 21 parts of dry cow dung, 6 to 9 parts of modified tree ash, 3 to 8 parts of kelp ash, 4 to 7 parts of coconut shell, 7 to 12 parts of corncob, 20 to 30 parts of needle-point leaf soil, 15 to 27 parts of bentonite, 6 to 13 parts of inorganic fertilizer, 2 to 4 parts of a plant extracting solution and 0.3 to 0.6 part of compound microorganism bacterium agent. The nutritionalsoil for the pot culture, disclosed by the invention, has the advantages that a formula is scientific and reasonable and a prepared product has abundant nutrients; the nutrient requirements on growthof flowers can be met for a long period; the nutritional soil for the pot culture has the functions of purifying air and preventing mosquitoes.

The invention discloses a preparation method of a knitted fabric containing Aiwei fibers. The preparation method comprises the steps that firstly, knitting needles are arranged, specifically, the knitting needles of a needle cylinder of a knitting machine are sequentially and circularly arranged with AB as a circulation unit; then threading is carried out, specifically, forward-twisted Aiwei threads correspondingly penetrate through the knitting needles of the needle cylinders of a first path and a third path; the reverse-twisted Aivwei threads correspondingly penetrate through knitting needles of the needle cylinders of a second path and a fourth path; and finally, knitting is carried out, specifically, circularly knitting is carried out by the knitting machine according to the needle cylinder with two needle paths in four paths to obtain the weft-knitted cotton and linen fabric. The knitted fabric is prepared by single-sided weft knitting, and the knitted fabric with high-grade handfeeling and style is prepared through the arrangement number and stitching method of stitches; according to the method, the forward-twisted Aiwei threads and the reverse-twisted Aiwei threads are obtained by blending the Aiwei fibers and the cotton fibers, and the two threads are combined with a stitching method, so that the prepared fabric solves the problem of high distortion rate of ready-madeclothes after being washed with water; the Aiwei fibers can be applied to knitted fabrics, and the anti-mosquito and anti-bacterial functions are achieved; and a thought is provided for spinning and application of the Aiwei fibers in the future.

The invention discloses an air purifying composition, relates to an air purifying composition adsorbing harmful substances in air, and belongs to the environment cleaning field. The composition adsorbs harmful substances in the indoor environment, releases a delicate fragrance specifically possessed by plants, can sterilize, inhibit bacteria and decompose the harmful gases, and causes no pollution to air. The composition is characterized in that the composition concretely comprises 50-90wt% of a main active component, 15-45wt% of active carbon, 15-45wt% of shaddock peel, 2-10wt% of Gleditsia sinensis Lam, 2-10wt% of Fortune Eupatorium Herb, 2-10wt% of pine needle, 0.1-0.3wt% of inorganic antibiotic powder, 2-5wt% of Syzygium aromaticum, 0.3-1wt% of Manchurian wildginger, 0.5-5wt% of a surfactant, 5-40wt% of a binder, and 5-10wt% of an assistant, wherein the binder is bentonite, and the assistant comprises a plasticizer and a pore enlarging agent.

The invention discloses a Chinese herbal medicine bactericide which is prepared from the following raw materials by weight: 12-30 percent of traditional Chinese medicine extracting solution, 20-25 percent of polyethylene glycol, 5-12 percent of mint oil, 1-3 percent of borneol and the balance of ionized water, wherein the traditional Chinese medicine extracting solution is prepared from the following components in parts by weight: 8-15 parts of honeysuckle, 15-30 parts of cyrtomium fortunei, 12-30 parts of lithospermum, 20-40 parts of aloe, 12-35 parts of radix clematidis, 10-20 parts of nux vomica, 11-25 parts of paniculate swallowwort root, 10-15 parts of cortex acanthopanacis, 5-12 parts of grifola and 15-30 parts of serrate rabdosia herb. Compared with common spray for repelling and avoiding mosquitoes in the conventional market, the Chinese herbal medicine bactericide disclosed by the invention has the characteristics of good mosquito preventing and repelling effects, non-irritation to human skin, long drug efficiency, convenience in use and low price.

A light type container room suitable for being used in islands and reefs in the South China Sea is formed by assembling and connecting of height-adjustable vertical columns, beams, keel frames, temperature-and-air adjusting side face plates with doors and windows, various-type roofs, a human-and-object carrying base plate, zippers, a mesh cover, ropes and tightening bands, wherein the zippers, the mesh cover, the ropes and the tightening bands are used for strengthening. The light type container room is characterized in that light materials meeting the South China Sea climate characteristic requirements are selected for all assemblies; the assembling and strengthening modes of a mortise-and-tenon joint, the zipper and the mesh cover are adopted; first, the vertical columns, the beams and the keel frames are assembled into room frames with different shapes, and the high foot level degree with the ground is adjusted through the height-adjustable vertical columns; then the temperature-and-air adjusting side face plates with the doors and the windows are assembled in the vertical columns of the room frames and mortise grooves of the beams to be combined into a container room enclosure; then the various-type roofs cover the room frame enclosure; next, a layer of soft base plate suitable for human living is laid on the bottom keel frame; and finally the upper and lower parts and the periphery of the room frame enclosure are subjected to binding and firm fixing through the zippers and the tightening bands, and so that the light type container room suitable for being used in the islands and reefs in the South China Sea is constructed.

The invention relates to the technical field of bags and suitcases, in particular to a detachable multifunctional travel draw-bar box. An outer box is symmetrically provided with four hinge devices through the bottom, the outer box is unfolded to form a bed frame, all connections adopt the limiting plug and elastic positioning mode, an inner box can contain food, clothes, living goods and the likeduring a trip, three pulleys are installed at the bottom, the total load carrying capacity of the box is 200 kilograms, after the box is unfolded, a tent can be built, the front face of the plastic tent is hinged to a square cloth mattress, a tent pull rope is fixed to the ground through a ground pile with the fixed tail, the ground level of the bed frame is 265 mm, the square cloth mattress is made from hard square cloth materials, the total weight is 9.4 kilograms, and the problems that an existing draw-bar box only has the functions of carrying objects and sliding, a draw bar cannot be detached and can also not be adopted as the bed frame in which a person can lie and have a rest, a person can only have a rest after multiple draw-bar boxes are arranged in parallel, and the draw-bar boxcannot resist rain, cold, sun, moisture and mosquitos are solved.

The invention discloses environment-friendly noctilucent anti-mosquito wallpaper. The environment-friendly noctilucent anti-mosquito wallpaper is prepared from, by weight, 20-30 parts of old clothes, 10-20 parts of waste wood, 10-20 parts of straw, 2-5 parts of nano-zinc oxide, 1-2 parts of chitosan, 2-8 parts of sodium sulfide, 10-25 parts of sodium hydroxide, 5-10 parts of cassava starch, 2-5 parts of butyl acrylate, 1-2 parts of a titanate coupling agent, 1-3 parts of cationic polyacrylamide, 1-2 parts of sodium N-cocoyl glycinate, 1-2 parts of azodiisobutyronitrile, 60-100 parts of deionized water, 20-30 parts of ethyl acetate, 3-6 parts of fluorescent powder and 5-10 parts of traditional Chinese medicine powder. According to the environment-friendly noctilucent anti-mosquito wallpaper, the old clothes, the waste wood and the straw are adopted as fiber base materials, resources are effectively utilized, resource waste is avoided, and the environment-friendly effect is achieved; the traditional Chinese medicine powder contained in the wallpaper achieve the killing effect, the fluorescent powder contained in the wallpaper can attract mosquitoes, and through mutual cooperation of the fluorescent powder and the traditional Chinese medicine powder, the mosquito dispelling effect is significant.

The invention relates to the technical field of floral water preparation, and further discloses a children floral water prepared by utilizing plant active ingredient degreasing extraction technology.The children floral water is prepared from the following raw materials in parts by weight: 5 to 8 parts of tea tree oil, 3 to 5 parts of borneol, 1 to 3 parts of menthol, 0.5 to 1 part of tween-80, 300 to 600 parts of an aldehyde-removed ethanol solution of shaddock peel extract, 40 to 60 parts of glycerol, 30 to 60 parts of aloe extract and 200 to 300 parts of distilled water. The preparation method comprises the following steps: fully dissolving tea tree oil, borneol, menthol and tween-80 in the aldehyde-removed ethanol solution of shaddock peel extract to obtain a system I; fully dissolvingglycerin and aloe extract in distilled water to obtain a system II; slowly adding the system II into the system I, standing for 3-5 days, filtering, and taking a filtrate, so as to obtain the floralwater for children. The floral water can solve the technical problem that the existing floral water for children only has the effects of removing miliaria, relieving itching and repelling mosquitoes,but cannot moisten the skin of children.

The invention provides a multifunctional decoration rope and a manufacturing method thereof. A flat ribbon comprises flat ribbon bodies 1, a fixing structure 2, a coating 3 and suspension rings 4, wherein at least two flat ribbon bodies 1 are fixedly connected through the fixing structure 2; the coating 3 is arranged on the flat ribbon bodies 1 and used for emitting smell; the suspension rings 4 are fixed to the flat ribbon bodies 1 and used for suspending the decoration rope. The invention provides the multifunctional decoration rope which has the advantages of resisting bacteria, eliminatingsmell, repelling mosquitos and the like, and the durability is good; due to the special coating design, the smell is durable, the rope is not affected by washing, and the rope is suitable for home decoration.

The invention relates to a gauze fabric prepared from fibers with a mosquito repelling function and a preparation process thereof. The gauze fabric is formed by weaving warp yarns and weft yarns; thewarp yarns are obtained by spinning the fibers with the mosquito repelling function; the weft yarns are obtained by blending polyurethane fibers and cotton fibers; and the fibers with the mosquito repelling function are prepared by taking polyester fibers as a framework material, polyhydroxyalkanoate microspheres as a reinforcing material and a plant extract as a functional material. According tothe gauze fabric prepared from the fibers with the mosquito repelling function and the preparation process thereof provided by the invention, the fibers with the mosquito repelling function is particularly added, so that the fabric not only has a mosquito preventing or decorating effect, but also has a relatively strong mosquito repelling effect. The gauze fabric provided by the invention adopts non-toxic and pollution-free materials, and is easy to prepare and suitable for being widely used indoors; and the preparation process is simple and convenient, easy to operate and suitable for popularization and application.

The invention provides a wood insect-proof essential oil. Raw materials comprise a plant compound extract and a solvent, wherein the plant compound extract is a mixture of a chinaberry leaf extract, achinaberry flower extract, a celastrus angulatus leaf extract and platycaryae extract, and an extract is a mixture of an ethyl acetate extract and an ethanol extract in a mass ratio of 1 to 2. The wood insect-proof essential oil does not contain chemical insecticidal ingredients and preservatives, and the ingredients are all plant materials, environmentally friendly, non-polluting, non-toxic andharmless. The essential oil is capable of purifying air and not damaging clothes, can prevent frogs and eliminate odor, is also suitable for infants and young children, and can be used not only for plant pest control, but also for pest control in daily life at home.

The invention provides an intelligent design scheme for a screen window. The screen window comprises a plurality of drainage wires (1), water tanks (2), water pumps (3), filter screen differential pressure systems (4), supercharging devices (5) and a window frame (6), and is characterized in that the water tanks (2) are arranged on the upper, lower, left and right surfaces of the window frame (6), water flows into each water tank via two channels, one channel of the water flows into each water tank from top to bottom, another channel of the water flows into each water tank from right to left, the water pumps (3) are mounted in the water tanks (2), and the filter screen differential pressure systems (4) are mounted at outlets of the water tanks (3) and are used for detecting blockage conditions of a filter screen.

The invention discloses a novel electric welding factory building. The electric welding factory building comprises a cuboid-shaped workshop, wherein the cuboid-shaped workshop is airtight; one end of the cuboid-shaped workshop is provided with a sealing door; an air feeding device is arranged on the lower portion of one of two opposite walls of the workshop; an air discharging device is arranged on the upper portion of the other one of the two opposite walls of the workshop; the air feeding device comprises a plurality of elongated air inlets; the inside of each air inlet is detachably connected with an air guiding plate; a dustproof gauze covers the air feeding device; the air discharging device consists of a plurality of exhaust fans and an air guiding tank; and the air guiding tank is positioned outside the workshop, collects air extracted by the exhaust fans and discharges the air upwards. The workshop is airtight, the circumstance that wind enters the workshop from all directions is avoided, an air channel can be formed, dust is prevented from diffusing in the workshop, and an effect of preventing dust, rats, mosquitoes and the like can be achieved.

This invention relates to photoelectron air purifying and antisepsis fan, which in detail makes air pass active carbon net for filtering and sends the ultraviolet by extreme ultraviolet tube to kill virus and mildew and adds the anion quantity in air. The fan structure comprises air draft wheel, electric motor, transformer, circuit board, control switch, and indication lamp. The machine gas-in mouth is located with active carbon filter net, air accumulation rack and extreme ultraviolet tube and the gas-out mouth is located with negative electrode high voltage carbonization fiber wire.

The present invention discloses a honeycomb-type air filtration yarn for doors and windows. The air filtration yarn comprises two layers of filtering faces, a plurality of orthohexagonal honeycomb-type connection passages are disposed at a connection part of the two layers of filtering faces, and each filtering face is formed by compounding a plane framework material layer at an outer layer and a high-efficiency and low-resistance air filtering material layer at an inner layer, or by compounding a plane framework material layer at an outer layer, a high-efficiency and low-resistance air filtering material layer in the middle, and another plane framework material layer at an inner layer. The honeycomb-type air filtration yarn for doors and windows is high in strength and stiffness, small in air resistance, high in air filtering efficiency, and capable of high-efficiency interception of fine particulate matters such as PM2.5 without impacting ventilation, has various functions such as energy conservation, noise prevention, thermal isolation, purification and mosquito prevention, can be used for replacing conventional screen windows and screen doors, and can be used for filtering the outdoor polluted air and then guiding the filtered air indoors, thereby maintaining good indoor ventilation.

The invention relates to the technical field of glass products, and particularly relates to a novel patch glass window. The novel patch glass window comprises a window frame, a transom window assemblyis installed on the upper end part of the window frame, a patch glass window assembly is installed on the lower end part of the window frame, and a transverse rod is arranged between the transom window assembly and the patch glass window assembly; the patch glass window assembly comprises a glass window and a rolling pipe horizontally arranged on the upper end part of the inner side of the glasswindow, an eccentric shaft is connected to the interior of the inner side of the rolling pipe, a soft patch is connected to the outer side of the rolling pipe in a sleeved mode, a first rod is connected to one end of the soft patch, and a second rod is connected to the other end of the soft patch; the patch glass window assembly comprises the soft patch or hollow patches transversely or verticallyarranged on the inner side of the glass window, and has functions of heat-resistance in summer, cold-resistance in winter and the like; the transom window assembly arranged on the upper part of the patch glass window assembly has functions of water-resistance, mosquito-resistance and the like, and has good ventilation and a lighting performance.

The invention discloses a conveniently folded air-filtering screen door window, which comprises a door frame, an air-filtering screen door window, a rail and a box; a honeycomb connecting channel is arranged in the air-filtering screen door window; an air filter screen and a netted skeleton layer are successively arranged on the exterior of the honeycomb connecting channel; a foldable bulge on oneside of the air-filtering screen door window is penetrated through a fixing skeleton; the lower end of the fixing skeleton is penetrated through a fastener arranged at the axis of a pulley; the pulley is arranged in a mounting rack; the mounting rack is blocked in the rail; the upper end of the air-filtering screen door window is serially connected with a hanging rod through a windproof holder; the two ends of the hanging rod are fixed in the box; the lower end of the air-filtering screen door window is connected with the rail through the mounting rack; the door frame is fixedly connected with the rail and the box through connectors. Due to the design of honeycomb type air-filtering screen door window, the invention achieves high strength, high stiffness, low air resistance and high air filtering efficiency of the conveniently folded air-filtering screen door window.

A reel gauze window with high-rise building anti-theft, protecting and anti-falling functions is provided with a rolling box assembly arranged on an upper window frame and connected with the upper endedge of a gauze element or sunshade fabric, and two groove channels fixed to two symmetrical side window frames through first straight type inner locks; the lower end of the gauze element or the sunshade fabric is connected with a straining beam assembly; a bottom beam is arranged on a lower window frame through a second straight type inner lock; the two ends of the bottom beam are connected withthe corresponding groove channels through groove channel inserting bases; the straining beam assembly is provided with a yarn rolling plate with the upper end connected with the lower end edge of thegauze element or the sunshade fabric, and a straining beam body with the lower end hooked to the bottom beam; the straining beam body is provided with a movable hook lock, and the movable hook lock is used for firmly locking the straining beam body and the bottom beam when the gauze element or the sunshade fabric is in an unfolded state, so that it is prevented that the straining beam body drivesthe gauze element or the sunshade fabric to perform mistaken rolling. The reel gauze window with the high-rise building anti-theft, protecting and anti-falling functions is a revolutionary new product further having various functions of preventing a theft, mistaken opening by children and falling while ventilation, mosquito preventing, automatic hiding, lighting, attractiveness, and no occupyingof a space are achieved.

The invention discloses a traditional Chinese medicine deodorizing mint emulsifiable paste, which comprises by weight 1.6-2% of menthol, 0.8-1.2% of mint oil, 1.6-2% of camphor, 0.8-1.2% of a Platycladus orientalis leaf extract, 4-6% of a sophora flower extract, 25-35% of a spine date seed extract, 4-8% of glycerin, 0.5-1.5% of triethanolamine, 0.8-1.2% of vitamin C, 2-4% of monoglyceride stearate, 5-7% of octadecanol, 0.5-1.5% of beeswax, 3-5% of liquid wax, 0.1-0.3% of ethylparaben, 0.1-0.3% of butylparaben and the balance of deionized water. The invention has the advantage that the paste is prepared from traditional Chinese medicines, has little side effect and high safety, can be fully absorbed by the human body, achieves the effect of deodorizing, refreshing and cooling by reducing sweat and inhibiting the reproduction of bacteria, and also has the effects of preventing mosquito, dizziness, headache and cold and promoting.

A multifunctional window is of a square structure and mainly comprises a window frame, a linear bearing, a sliding rod, a glass casement and a drum type invisible screen. Limit movement of the glass casement, left and right openable technology and invisible screen technology are combined, the multifunctional window has indoor ventilation, heat insulation, thievery prevention, mosquito repelling and potential safety hazard elimination functions, and glass is conveniently cleaned. The multifunctional window is simple in structure, stable and reliable in connection and convenient to use.

The invention discloses a PCB (Printed Circuit Board) printing ink printing device, which comprises a PCB and a printing ink layer, wherein the PCB is provided with a welding wire region; and the printing ink layer is arranged at a region beyond the welding wire region on the PCB, so that fluorescence glue can be filled conveniently in the PCB packaging process. The PCB printing ink printing device has the characteristics of simple structure, mosquito prevention, low cost and the like; and materials for the printing device are industrially common materials.

The invention relates to a multi-functional mouth mask, belonging to the field of sanitation supplies. The multi-functional mouth mask comprises a mask body of the mouth mask and fixing ropes. The mask body of the mouth mask comprises a rectangular cotton yarn cover sheet, an active carbon filter cover sheet, an argy wormwood cover sheet, a honeysuckle flower cover sheet and a non-woven fabric filter cotton cover sheet. Upper and lower parts of the rectangular cotton yarn cover sheet are both equipped with first and second connection ropes. The active carbon filter cover sheet and the non-woven fabric filter cotton cover sheet are arranged between the first connection ropes. End parts of the active carbon filter cover sheet and the non-woven fabric filter cotton cover sheet are provided with first rope-threading hole channels. The argy wormwood cover sheet and the honeysuckle flower cover sheet are arranged between the two second connection ropes. End parts of the argy wormwood cover sheet and the honeysuckle flower cover sheet are equipped with second rope hole channels. The multi-functional mouth mask has the following beneficial effects of filtering air, preventing mosquitoes, eliminating peculiar smell and refreshing air.