A nano-atomization device for low-temperature plasma activated water disinfection

Abstract

The present invention discloses a nano-atomization device for low-temperature plasma activated water disinfection, comprising a water atomization component, a water vapor introduction component and a nano-atomization component, wherein the water atomization component comprises a first housing, a water storage tank, an atomizer and a first fan, the water vapor introduction component comprises a gas-liquid mixing box, a second fan, an air inlet pipe and an air outlet pipe, and the nano-atomization component comprises a plasma generator, a porous catalytic net and a plurality of injection heads. In the present invention, water is first atomized, the atomized water is mixed with air, and then plasmatized to obtain low-temperature plasma activated water, which is then ejected through the injection head to achieve a good nano-atomization effect, which is convenient for subsequent uniform spraying, and thus achieves a good disinfection effect.

Description

Technical Field

[0001] The invention relates to the technical field of activated water disinfection, in particular to a nano atomization device for low-temperature plasma activated water disinfection. Background Art

[0002] Plasma sterilization technology is also an efficient disinfection solution. However, air discharge plasma will synthesize a large amount of harmful substances such as ozone and nitrogen oxides, which will cause secondary pollution. It is not suitable for scenarios where people are present, such as vehicles, nor for application scenarios with food.

[0003] Plasma-activated water is rich in reactive oxygen species (ROS). ROS is a strong oxidant that has a strong disinfecting effect on bacteria and viruses. ROS has a short lifespan and is inactivated after reacting with bacteria, viruses or air molecules, turning into stable oxygen molecules. It is one of the main components of the air and does not produce secondary pollutants. It is a safe and environmentally friendly disinfectant that can replace chemical disinfectants.

[0004] The current plasma activated water disinfection generally involves directly plasma activating the water, and then spraying the plasma activated water through a blowing device to achieve subsequent disinfection.

[0005] However, the above-mentioned disinfection method directly performs plasma activation on water, and the activation effect is poor. In addition, the plasma-activated water sprayed out is prone to uneven spraying, which affects subsequent disinfection. Summary of the invention

[0006] 1. Technical issues to be resolved

[0007] The present invention can solve the problem that the existing plasma activated water generally directly performs nano-atomization on water, which has a poor atomization effect, causes uneven subsequent spraying of nano-atomized water, and affects subsequent disinfection.

[0008] (II) Technical solution

[0009] In order to achieve the above object, the present invention adopts the following technical scheme, a nano-atomization device for low-temperature plasma activated water disinfection, comprising:

[0010] A water atomization assembly, the water atomization assembly comprising a first shell, a water storage tank, an atomizer and a first fan, the water storage tank, the atomizer and the first fan are respectively installed inside the first shell, a water pipe is connected to the side of the water storage tank, a water outlet end of the water pipe is connected to the water inlet end of the atomizer, the outlet of the atomizer is connected to the feed end of the first fan, an air outlet end of the first fan is connected to an air pipe, and the air pipe extends from the side of the first shell;

[0011] A water vapor introduction component, the water vapor introduction component comprises a gas-liquid mixing box, a second fan, an air inlet pipe and an air outlet pipe, the gas-liquid mixing box is connected to the air outlet end of the air guide pipe, the air inlet pipe is connected to the air inlet end of the second fan, two air outlet pipes are provided, the two air outlet pipes are respectively installed on both sides of the second fan, the air outlet ends of the two air outlet pipes are respectively connected to both sides of the gas-liquid mixing box, the air outlet end of one air outlet pipe is adjacent to the air outlet end of the air guide pipe, and the air outlet end of the other air outlet pipe is opposite to the air outlet end of the air guide pipe;

[0012] The nano-atomization component comprises a plasma generator, a porous catalytic net and a plurality of injection heads. The plasma generator is installed at the gas outlet end of the gas-liquid mixing box, the porous catalytic net is connected to the discharge end of the plasma generator, and the plurality of injection heads are respectively connected to the discharge ends of the porous catalytic net.

[0013] As a preferred technical solution of the present invention, the water atomization assembly further includes an air water maker, and a liquid outlet end of the air water maker is connected to the water storage tank.

[0014] As a preferred technical solution of the present invention, a water volume sensor is connected to the side of the water tank, and a water filter is connected to the middle of the water tank.

[0015] As a preferred technical solution of the present invention, a metering valve is connected to the middle of the water pipe, a first sealing ring is arranged between the water inlet end of the water pipe and the water storage tank, and a second sealing ring is arranged between the water outlet end of the water pipe and the water inlet end of the atomizer.

[0016] As a preferred technical solution of the present invention, a plurality of equal flow channels are installed inside the gas-liquid mixing box, and a plurality of material guide holes cooperating with the plasma generator are opened at the lower part of the gas-liquid mixing box.

[0017] As a preferred technical solution of the present invention, the plasma generator includes an insulating frame and a plurality of quartz glass tubes, the insulating frame is installed at the discharge end of the gas-liquid mixing box, the plurality of quartz glass tubes are respectively installed on the inner side of the insulating frame, the inner sides of the plurality of quartz glass tubes are sheathed with metal tubes, and one end of the plurality of metal tubes is welded by metal wires to form a high voltage electrode and a grounding electrode.

[0018] As a preferred technical solution of the present invention, the spacing between the plurality of quartz glass tubes is 2 mm-4 mm, and the wall thickness of the plurality of quartz glass tubes is 0.8 mm-1.2 mm.

[0019] As a preferred technical solution of the present invention, the porous catalytic net is prepared by loading nano-TiO2 and MnO2 on a single-layer nickel foam porous plate respectively.

[0020] As a preferred technical solution of the present invention, protective covers are respectively arranged on the outer sides of the plurality of injection heads, and the protective covers separate the plurality of injection heads.

[0021] (III) Beneficial effects

[0022] 1. The nano-atomization device for low-temperature plasma activated water disinfection provided by the present invention comprises a first housing, a water storage tank, an atomizer and a first fan. The water to be used is stored in the water storage tank. After the water enters the atomizer, it is atomized by the atomizer and pressurized by the first fan and discharged from the first housing, thereby realizing water atomization in a simple manner.

[0023] 2. The nano-atomization device for low-temperature plasma activated water disinfection provided by the present invention has a water vapor introduction component including a gas-liquid mixing box, a second fan, an air inlet pipe and an air outlet pipe. The atomized water enters the gas-liquid mixing box, and the second fan is operated to introduce air into the gas-liquid mixing box, so that the gas and the atomized water are evenly mixed, which is convenient for subsequent plasma treatment;

[0024] 3. The nano-atomization device for low-temperature plasma activated water disinfection provided by the present invention comprises a plasma generator, a porous catalytic net and a plurality of injection heads. After the gas and the atomized water are evenly mixed, they enter the plasma generator. After being treated by the plasma generator, low-temperature plasma activated water is obtained. The water is then passed through the porous catalytic net to promote the complete oxidation and ozone decomposition reaction of the by-products generated by the plasma, thereby eliminating secondary pollution. The water is then ejected through a plurality of injection heads, thereby effectively realizing nano-ization, facilitating the subsequent uniform ejection, and further facilitating subsequent disinfection. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 is a front cross-sectional schematic diagram of the present invention;

[0027] Figure 2 It is a schematic diagram of a front cross-section of a partial structure of a water atomization assembly of the present invention;

[0028] Figure 3 It is a schematic diagram of the structure of the insulating frame part of the present invention;

[0029] Figure 4 It is a partial structural schematic diagram of the quartz glass tube of the present invention;

[0030] Figure 5 It is a schematic diagram of power supply of the plasma generator of the present invention.

[0031] In the figure: 100, water atomization assembly; 110, first shell; 120, water storage tank; 121, water volume sensor; 122, water filter; 130, atomizer; 140, first fan; 150, water guide pipe; 151, metering valve; 152, first sealing ring; 153, second sealing ring; 160, air guide pipe; 170, air water maker; 200, water vapor introduction assembly; 210, gas-liquid mixing box; 211, flow equalization channel; 212, material guide hole; 220, second fan; 230, air inlet pipe; 240, air outlet pipe; 300, nano atomization assembly; 310, plasma generator; 311, insulating frame; 312, quartz glass tube; 313, metal tube; 320, porous catalytic mesh; 330, injection head; 331, protective cover.

[0032] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0036] In the description of the present invention, it is necessary to understand that the orientations or positional relationships indicated by terms such as “longitudinal”, “up”, “down”, “left”, “right”, “top”, “bottom”, “inside” and “outside” are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0038] like Figures 1 to 5 As shown, a nano-atomization device for low-temperature plasma activated water disinfection includes a water atomization component 100, a water vapor introduction component 200 and a nano-atomization component 300, wherein the water atomization component 100 is connected to the water vapor introduction component 200, and the nano-atomization component 300 is connected to the discharge end of the water vapor introduction component, wherein: the water atomization component 100 is used for preliminary atomization of water, the water vapor introduction component 200 is used for mixing the atomized water with air, and the nano-atomization component 300 is used for nano-atomization to obtain low-temperature plasma activated water.

[0039] The water atomization assembly 100 includes a first housing 110, a water storage tank 120, an atomizer 130 and a first fan 140. The water storage tank 120, the atomizer 130 and the first fan 140 are respectively installed in the interior of the first housing 110 by bolts. In the specific setting, in order to facilitate the detection of the water volume of the water storage tank 120, a water volume sensor 121 is connected to the side of the water storage tank 120. In order to ensure the quality of the supplied water, a water filter 122 is connected to the middle of the water storage tank 120; a water pipe 150 is connected to the side of the water storage tank 120, and the water outlet end of the water pipe 150 is connected to the atomizer The water pipe 150 is connected to the water inlet end of the atomizer 130. In the specific setting, in order to control the amount of atomized water obtained, a metering valve 151 is connected to the middle of the water pipe 150; in order to achieve a good sealing effect, a first sealing ring 152 is arranged between the water inlet end of the water pipe 150 and the water storage tank 120, and a second sealing ring 153 is arranged between the water outlet end of the water pipe 150 and the water inlet end of the atomizer 130; the outlet of the atomizer 130 is connected to the feed end of the first fan 140, and the air outlet end of the first fan 140 is connected to the air pipe 160, and the air pipe 160 extends from the side of the first shell 110.

[0040] The water vapor introduction component 200 includes a gas-liquid mixing box 210, a second fan 220, an air inlet pipe 230 and an air outlet pipe 240. The gas-liquid mixing box 210 is connected to the air outlet end of the air duct 160. In the specific setting, in order to better mix, a plurality of flow equalization channels 211 are installed inside the gas-liquid mixing box 210; the air inlet pipe 230 is connected to the air inlet end of the second fan 220, and two air outlet pipes 240 are provided. The two air outlet pipes 240 are respectively installed on both sides of the second fan 220, and the air outlet ends of the two air outlet pipes 240 are respectively connected to the two sides of the gas-liquid mixing box 210, the air outlet end of one air outlet pipe 240 is adjacent to the air outlet end of the air duct 160, and the air outlet end of the other air outlet pipe 240 is opposite to the air outlet end of the air duct 160.

[0041] The nano-atomization assembly 300 includes a plasma generator 310, a porous catalytic mesh 320 and a plurality of injection heads 330. The plasma generator 310 is installed at the gas outlet end of the gas-liquid mixing box 210. In a specific setting, in order to facilitate the mixed water mist and air to enter the plasma generator 310, a plurality of guide holes 212 cooperating with the plasma generator 310 are opened at the lower part of the gas-liquid mixing box 210; the porous catalytic mesh 320 is connected to the discharge end of the plasma generator 310. In a specific setting, the porous catalytic mesh 320 is prepared by respectively loading nano-TiO2 and MnO2 on a single-layer nickel foam porous plate; the plurality of injection heads 330 are respectively connected to the discharge end of the porous catalytic mesh 320. In a specific setting, protective covers 331 are respectively arranged on the outer sides of the plurality of injection heads 330, and the protective covers 331 separate the plurality of injection heads 330 respectively.

[0042] It should be noted that nickel foam is a good catalyst carrier. It has the strength and characteristics of metal, a sponge-like three-dimensional porous structure, a large specific surface area, can load more catalysts, has uniform pore size, stable pore shape, high separation efficiency; high porosity and excellent permeability, small filtration resistance, small pressure loss, large flow rate; good chemical stability, acid and alkali corrosion resistance (pH value 2-12), antioxidant properties, and can be used for a long time in an environment with a temperature below 600°C; can be folded to increase the filtration area, and can be welded and processed; can be cleaned and regenerated, and can be reused many times; especially suitable for occasions with high uniformity requirements such as fluid distribution and homogenization treatment;

[0043] The role of the filter screen loaded with nano-catalysts TiO2 and MnO2 is to introduce the catalyst into the low-temperature plasma, and there is a synergistic strengthening effect between the low-temperature plasma and the catalytic reaction. A large number of extremely active particles, such as ions, electrons, excited atoms, molecules and free radicals, and other highly active species containing huge energy are enriched in the low-temperature plasma space. The active particles activate the reaction molecules on the one hand and the catalyst center on the other. Therefore, the catalytic reaction that requires very high activation energy (heating to above 300°C) under normal conditions can be carried out smoothly at room temperature, greatly reducing energy consumption. In addition, the presence of the catalyst can also promote the complete oxidation of the by-products produced by the plasma and the ozone decomposition reaction, eliminating secondary pollution.

[0044] In this embodiment, the water atomization assembly 100 also includes an air water maker 170, the liquid outlet of the air water maker 170 is connected to the water storage tank 120, and water is produced by the air water maker 170, avoiding external water pipes and facilitating use in a variety of environments.

[0045] In this embodiment, the plasma generator 310 includes an insulating frame 311 and a plurality of quartz glass tubes 312. The insulating frame 311 is installed at the discharge end of the gas-liquid mixing box 210. The plurality of quartz glass tubes 312 are respectively installed on the inner side of the insulating frame 311. The inner side of the plurality of quartz glass tubes 312 is sheathed with metal tubes 313. One end of the plurality of metal tubes 313 is welded by metal wires to form a high voltage electrode and a grounding electrode. In the specific setting, the spacing between the plurality of quartz glass tubes 312 is 2 mm-4 mm, and the wall thickness of the plurality of quartz glass tubes 312 is 0.8 mm-1.2 mm.

[0046] It should be noted that a wire is welded to one end of each metal tube 313, and both ends are sealed with two-component silicone. The tube openings with metal wires are welded together in an alternating manner to form two electrodes: a high voltage electrode and a ground electrode. The gap between the tubes is 2-4 mm, and both ends are fixed by an insulating medium (such as dielectric materials such as polytetrafluoroethylene, ceramics, epoxy insulation boards, etc.). The upper and lower sides are also formed with the same insulating material to form a fixed frame, and the outer periphery is wrapped by a metal sheet metal frame (the material is stainless steel or aluminum alloy). The quartz tube wall thickness is 1 mm: a special glass tube made of a single component of silicon dioxide. This glass has high hardness, high temperature resistance, low expansion coefficient, thermal shock resistance, chemical stability and good electrical insulation performance, and can transmit ultraviolet and infrared rays. In addition to hydrofluoric acid and hot phosphoric acid, it has good acid resistance to general acids.

[0047] Specifically, the working principle of the nano-atomization device for low-temperature plasma activated water disinfection is that when in use, water to be used is stored in the water storage tank 120. After the water enters the atomizer 130, it is atomized by the atomizer 130 and is pressurized by the first fan 140 and discharged from the first shell 110, thereby simply realizing the atomization of the water; the atomized water enters the gas-liquid mixing box 210, and through the operation of the second fan 220, air is introduced into the interior of the gas-liquid mixing box 210, so that the gas and the atomized water are evenly mixed, which is convenient for subsequent plasma treatment; after the gas and the atomized water are evenly mixed, they enter the plasma generator 310, and after being treated by the plasma generator 310, low-temperature plasma activated water is obtained, and then the water passes through the porous catalytic net 320 to promote the complete oxidation and ozone decomposition reaction of the by-products generated by the plasma, eliminate secondary pollution, and then is sprayed out through a plurality of spray heads 330, effectively realizing nano-ization, which is convenient for the uniformity of subsequent spraying, and then convenient for subsequent disinfection.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A nano-atomization device for low-temperature plasma activated water disinfection, characterized in that: include: A water atomization assembly (100), the water atomization assembly (100) comprising a first housing (110), a water storage tank (120), an atomizer (130) and a first fan (140), the water storage tank (120), the atomizer (130) and the first fan (140) being respectively installed inside the first housing (110), a water guide pipe (150) being connected to the side of the water storage tank (120), a water outlet end of the water guide pipe (150) being connected to a water inlet end of the atomizer (130), an outlet of the atomizer (130) being connected to a feed end of the first fan (140), an air outlet end of the first fan (140) being connected to an air guide pipe (160), the air guide pipe (160) being connected from the first housing to the water outlet end of the atomizer (130) (110); a water vapor introduction component (200), the water vapor introduction component (200) comprising a gas-liquid mixing box (210), a second fan (220), an air inlet pipe (230) and an air outlet pipe (240), the gas-liquid mixing box (210) being connected to the air outlet end of the air guide pipe (160), the air inlet pipe (230) being connected to the air inlet end of the second fan (220), two air outlet pipes (240) being provided, the two air outlet pipes (240) being respectively installed on both sides of the second fan (220), the air outlet ends of the two air outlet pipes (240) being respectively connected to both sides of the gas-liquid mixing box (210), the air outlet end of one air outlet pipe (240) being connected to the air guide pipe (160), and the air outlet end of the other air outlet pipe (240) being connected to the air outlet end of the second fan (220). The air outlet end is adjacent to the air outlet end, and the air outlet end of another air outlet pipe (240) is opposite to the air outlet end of the air guide pipe (160); a nano atomization component (300), the nano atomization component (300) includes a plasma generator (310), a porous catalytic net (320) and a plurality of injection heads (330), the plasma generator (310) is installed at the air outlet end of the gas-liquid mixing box (210), the porous catalytic net (320) is connected to the discharge end of the plasma generator (310), and the plurality of injection heads (330) are respectively connected to the discharge ends of the porous catalytic net (320); the water atomization component (100) also includes an air water maker (170), the liquid outlet end of the air water maker (170) is adjacent to the air outlet end of the gas-liquid mixing box (210), and the liquid outlet end of the air water maker (170) is adjacent to the air outlet end of the gas-liquid mixing box (210). The water tank (120) is connected to a water volume sensor (121) at the side of the water tank (120), and a water filter (122) is connected to the middle of the water tank (120); a quantitative valve (151) is connected to the middle of the water guide pipe (150), a first sealing ring (152) is provided between the water inlet end of the water guide pipe (150) and the water tank (120), and a second sealing ring (153) is provided between the water outlet end of the water guide pipe (150) and the water inlet end of the atomizer (130); a plurality of equal flow channels (211) are installed inside the gas-liquid mixing box (210), and a plurality of material guide holes (212) cooperating with the plasma generator (310) are provided at the lower part of the gas-liquid mixing box (210);The plasma generator (310) comprises an insulating frame (311) and a plurality of quartz glass tubes (312), wherein the insulating frame (311) is installed at the discharge end of the gas-liquid mixing box (210), and the plurality of quartz glass tubes (312) are respectively installed on the inner side of the insulating frame (311), and a metal tube (313) is sheathed on the inner side of the plurality of quartz glass tubes (312), and one end of the plurality of metal tubes (313) is welded by metal wires to form a high voltage electrode and a grounding electrode. ; 2. A nano-atomization device for low-temperature plasma activated water disinfection according to claim 1, characterized in that: The spacing between the plurality of quartz glass tubes (312) is 2 mm to 4 mm, and the wall thickness of the plurality of quartz glass tubes (312) is 0.8 mm to 1.2 mm.

3. A nano-atomization device for low-temperature plasma activated water disinfection according to claim 1, characterized in that: The porous catalytic net (320) is prepared by loading nano-TiO2 and MnO2 on a single-layer nickel foam porous plate.

4. A nano-atomization device for low-temperature plasma activated water disinfection according to claim 1, characterized in that: Protective covers (331) are respectively arranged on the outer sides of the plurality of injection heads (330), and the protective covers (331) respectively separate the plurality of injection heads (330).

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