CN217808834U - Plasma activated water preparation device - Google Patents
Plasma activated water preparation device Download PDFInfo
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- CN217808834U CN217808834U CN202221401509.3U CN202221401509U CN217808834U CN 217808834 U CN217808834 U CN 217808834U CN 202221401509 U CN202221401509 U CN 202221401509U CN 217808834 U CN217808834 U CN 217808834U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 86
- 238000002360 preparation method Methods 0.000 title claims abstract description 25
- 239000007788 liquid Substances 0.000 claims abstract description 127
- 238000005086 pumping Methods 0.000 claims description 33
- 238000007599 discharging Methods 0.000 claims description 17
- 239000012212 insulator Substances 0.000 claims description 4
- 210000002381 plasma Anatomy 0.000 abstract description 73
- 238000000034 method Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 10
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- 239000000243 solution Substances 0.000 description 74
- 229910052751 metal Inorganic materials 0.000 description 18
- 239000002184 metal Substances 0.000 description 18
- 239000007864 aqueous solution Substances 0.000 description 7
- 239000004575 stone Substances 0.000 description 7
- 239000012080 ambient air Substances 0.000 description 6
- 239000000919 ceramic Substances 0.000 description 6
- 238000004090 dissolution Methods 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 238000009413 insulation Methods 0.000 description 4
- 238000002679 ablation Methods 0.000 description 3
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- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 238000004659 sterilization and disinfection Methods 0.000 description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 3
- 229910052721 tungsten Inorganic materials 0.000 description 3
- 239000010937 tungsten Substances 0.000 description 3
- 230000000844 anti-bacterial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
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- 239000002253 acid Substances 0.000 description 1
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- 230000004888 barrier function Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
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Abstract
The application relates to a plasma activated water preparation device, which specifically comprises a gas-phase discharge assembly 100, a gas-liquid mixed-phase discharge assembly and a container, wherein a solution to be treated is contained in the container, the gas-phase discharge assembly 100 ionizes air to generate air plasmas, the air plasmas are transmitted to the solution to be treated, are gradually dissolved into the solution to be treated, and generate H in the solution to be treated + 、NO 2 ‑ And NO 3 ‑ (ii) a The gas-liquid mixed phase discharge assembly is ionized at a gas-liquid interface, and then a large amount of H is generated in the liquid at the gas-liquid interface 2 O 2 . The whole isIn the process, a large amount of gas plasma (including H) is generated simultaneously by a combined scheme of gas-phase discharge and gas-liquid mixed-phase discharge + 、NO 2 ‑ And NO 3 ‑ Etc.) and a large amount of H 2 O 2 The preparation efficiency of the plasma activated water can be obviously improved.
Description
Technical Field
The application relates to the technical field of activated water preparation, in particular to a plasma activated water preparation device.
Background
Plasma Activated Water (PAW) is a generic term for Plasma treated distilled Water, physiological saline, and tap Water. The plasma consisting of the interaction of these liquidsIn the process, on one hand, products such as O3, NO2 and the like generated in the self-discharge process are directly diffused and dissolved in water to generate H + 、NO 2 - 、NO 3 - On the other hand, water molecules also participate in the discharge reaction to generate short-lived, strongly oxidizing radicals, OH, which are ultimately converted to H 2 O 2 . The oxidizing particles in the PAW can further react to generate strong oxide substances such as ONOOH, so that the PAW has a strong application prospect in the field of sterilization and disinfection.
The surface PAW has been studied for H + 、NO 2 - And H 2 O 2 The higher the concentration of the three particles, the better the PAW bactericidal effect, so increasing the concentration of the three particles in the PAW is the key to increase the PAW bactericidal effect. Most of the existing PAW preparation devices generate plasma by discharging in air in a Dielectric Barrier Discharge (DBD) mode in a dielectric tube mode, and then a product after discharging is introduced into water by using an air exhaust piece. In order to improve the efficiency of the preparation of the PAW, many have proposed a method using a multi-tube discharge array.
However, the use of the multi-tube array in air can increase H in PAW + 、NO 2 - But for H 2 O 2 The function of concentration increase is very limited, the prepared PAW is mainly dependent on an acid environment for sterilization, the sterilization effect is limited, and the traditional PAW preparation efficiency is low, so that the current market demand is difficult to meet.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is necessary to provide an apparatus for efficiently preparing plasma-activated water, which is directed to the problem that the conventional plasma-activated water preparation cannot efficiently prepare plasma-activated water.
A plasma activated water preparation device comprises a gas-phase discharge assembly, a gas-liquid mixed-phase discharge assembly and a container, wherein the container is used for containing a solution to be treated; the gas-liquid mixed phase discharging assembly and the solution to be treated form a gas-liquid interface;
the gas-phase discharge assembly ionizes air to generate air plasma, and the air plasma is transmitted to the solution to be treated; and the gas-liquid mixed phase discharge assembly is ionized at the gas-liquid interface.
In one embodiment, the gas-phase discharge assembly comprises an air pumping piece, an insulating medium container and an electrode, wherein the insulating medium container is provided with an ionized gas outlet and an ionized gas inlet;
the electrode is inserted into the insulating medium container, the air inlet end of the air pumping piece is connected with the atmosphere, the air outlet end of the air pumping piece is connected with the air inlet of the insulating medium container, the electrode ionizes air to generate air plasma, and the air plasma is transmitted to the solution to be treated through the ionized air outlet.
In one embodiment, the gas phase discharge assembly further comprises a first driving power source connected to the electrode.
In one embodiment, the gas-phase discharge assembly further comprises a first porous bubble piece, and the first porous bubble piece is arranged at the ionized gas outlet of the insulating medium container.
In one embodiment, the gas-liquid mixed phase discharge assembly comprises an insulating piece and an electrode array, wherein the electrode array is arranged on the insulating piece, a gas-liquid interface is formed between the electrode array and the solution to be treated, and the electrode array is ionized at the gas-liquid interface.
In one embodiment, the gas-liquid mixed phase discharge assembly further comprises a second driving power supply, and the second driving power supply is connected with the electrode array.
In one embodiment, the gas-liquid mixed phase discharge assembly comprises a water pumping piece, a gas-liquid mixed phase ionization tank and a high-voltage electrode;
the water inlet of the water pumping part is connected with the container, the water outlet of the water pumping component is connected with the gas-liquid mixed phase ionization tank, and the gas-liquid mixed phase ionization tank is provided with a water outlet;
the water pumping assembly pumps the solution to be treated in the container to the gas-liquid mixed phase ionization tank, the high-voltage electrode and the solution to be treated in the gas-liquid mixed phase ionization tank form a gas-liquid interface, the high-voltage electrode is ionized at the gas-liquid interface, and the ionized solution flows back to the container through a water outlet of the gas-liquid mixed phase ionization tank.
In one embodiment, the plasma activated water preparation apparatus further comprises a container cover, a vent pipe and a baffle member, wherein the container cover is provided with a first air outlet and a second air outlet, one end of the baffle member is connected with the container cover, the other end of the baffle member is inserted into the container and is in contact with the solution to be treated, the first air outlet and the second air outlet are respectively arranged at two sides of the baffle member, the first air outlet is arranged at one side close to the gas-liquid mixed phase discharge assembly, and the second air outlet is arranged at one side far away from the gas-liquid mixed phase discharge assembly; one end of the breather pipe is connected with the first air outlet, and the other end of the breather pipe is inserted into the solution to be treated.
In one embodiment, the plasma activated water preparation apparatus further includes a second porous bubble member connected to an end of the aeration pipe into which the solution to be treated is inserted.
In one embodiment, the plasma-activated water preparation apparatus further comprises a ground electrode disposed at the bottom of the container.
The plasma activated water preparation device comprises a gas-phase discharge assembly, a gas-liquid mixed-phase discharge assembly and a container, wherein the container is filled with a solution to be treated, the gas-phase discharge assembly ionizes air to generate air plasmas, the air plasmas are transmitted to the solution to be treated and gradually dissolved in the solution to be treated, and H is generated in the solution to be treated + 、NO 2 - And NO 3 - (ii) a The gas-liquid mixed phase discharge assembly is ionized at a gas-liquid interface, and a large amount of H is generated in the liquid at the gas-liquid interface 2 O 2 . The scheme of combination of gas-phase discharge and gas-liquid mixed-phase discharge can simultaneously generate a large amount of gas plasma (including H) in the whole process + 、NO 2 - And NO 3 - Etc.) and a large amount of H 2 O 2 The preparation efficiency of the plasma activated water can be obviously improved.
Drawings
FIG. 1 is a schematic block diagram of a plasma-activated water production apparatus according to an embodiment;
FIG. 2 is a schematic view of a plasma activated water producing apparatus according to one embodiment;
FIG. 3 is a schematic diagram of a gas-liquid mixed-phase discharge module according to an embodiment;
FIG. 4 is a schematic view showing the construction of a plasma-activated water producing apparatus according to an example of application;
FIG. 5 is a schematic view showing the construction of a plasma-activated water producing apparatus according to another embodiment.
The reference numbers in the detailed description are as follows:
a gas-phase discharge module 100, a gas-liquid mixed-phase discharge module 200, and a container 300;
the device comprises a solution A to be treated, an air pumping piece 120, an insulating medium container 140, an electrode 160, a first driving power supply 170, a first porous bubble piece 180, an insulating piece 220, an electrode array 240, a water pumping piece 250, a gas-liquid mixed phase ionization tank 260, a high-voltage electrode 270, a second driving power supply 280, a container cover 400, a vent pipe 500 and a baffle piece 600;
the device comprises a first driving power supply 1, a second driving power supply 2, an air pump 3, a medium pipe 4, a high-voltage rod electrode 5, a high-voltage insulating plate 6, a metal needle electrode array 7, a first air outlet 8, a second air outlet 9, a bubble disc 10, a bubble stone 11, a baffle plate 12, a container 13, a solution to be treated 14, a first air plasma 15, a second air plasma 16, a medium-coated ground electrode 17, a water suction pump 18, a gas-liquid mixed phase ionization tank 19, a high-voltage rod electrode 20 and an insulating medium 21.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad application.
As shown in fig. 1, the plasma activated water preparation apparatus of the present application includes a gas-phase discharge assembly 100, a gas-liquid mixed-phase discharge assembly 200, and a container 300, wherein the container 300 is used for containing a solution a to be treated; the gas-liquid mixed phase discharge assembly 200 and the solution A to be treated form a gas-liquid interface; the gas-phase discharge assembly 100 ionizes air to generate air plasma, and the air plasma is transmitted to the solution A to be treated; the gas-liquid mixed phase discharge assembly 200 is ionized at the gas-liquid interface.
The container 300 is used for containing a solution a to be treated. The shape, size, etc. of the container 300 can be set according to the requirements of actual conditions, and the container 300 can be made of an insulating material, such as glass, ceramic, etc. Further, the container 300 may include a container cover 400 so that the ionized air plasma may remain in the container 300 for a longer time, thereby being further sufficiently dissolved into the solution a to be treated. The solution A to be treated is aqueous solution, and air plasma can be dissolved to generate H after entering the aqueous solution + 、NO 2 - And NO 3 - . Further, an insulating medium-wrapped ground electrode may be disposed at the bottom of the container 300.
The gas phase discharge assembly 100 is used to ionize air, particularly by high voltage ionization. Specifically, high voltage may be applied to a high voltage rod electrode placed in air, which punctures the surrounding air, creating an air plasma. While discharging O 3 NO and NO 2 Enters the solution A to be treated under the action of the gas flow, and the gas and air plasma generate H in the solution A to be treated + 、NO 2 - And NO 3 - 。
The gas-liquid mixed phase discharge assembly 200 and the solution a to be treated form a gas-liquid interface, which is the interface between air and liquid (the solution a to be treated), and can be simply understood as the contact interface between air and liquid. In practical applications, the gas-liquid mixed phase discharge assembly 200 may be very close to the solution a to be treated, but is not directly contacted with the solution a to be treated, i.e. there is a very fine gap between the gas-liquid mixed phase discharge assembly 200 and the solution a to be treated. Gas-liquid mixed phase dischargeThe assembly 200 is ionized at the gas-liquid interface, that is, the ionized air generates a large amount of air plasma, the air plasma is gathered in the gas-liquid interface area (the area between the gas-liquid mixed phase discharge assembly 200 and the solution A to be treated), and a large amount of H is generated in the solution A to be treated at the gas-liquid interface while discharging 2 O 2 . Further, the gas-liquid mixed phase discharging assembly 200 may include a discharging electrode array, and a plurality of electrodes are combined to form the electrode array, for example, a plurality of metal needle electrodes form the metal needle electrode array, and because the electrode array includes a plurality of electrodes, and the plurality of electrodes simultaneously perform an ionization reaction, the ionization efficiency may be improved, and a large amount of air plasma may be ionized and released in a short time.
The plasma activated water preparation device comprises a gas-phase discharge assembly 100, a gas-liquid mixed-phase discharge assembly 200 and a container 300, wherein the container 300 is filled with a solution A to be treated, the gas-phase discharge assembly 100 ionizes air to generate air plasmas, the air plasmas are transmitted to the solution A to be treated and gradually dissolved into the solution A to be treated, and H is generated in the solution A to be treated + 、NO 2 - And NO 3 - (ii) a The gas-liquid mixed phase discharge assembly 200 is ionized at the gas-liquid interface, and a large amount of H is generated in the liquid at the gas-liquid interface 2 O 2 . The scheme of combination of gas-phase discharge and gas-liquid mixed-phase discharge can simultaneously generate a large amount of gas plasma (including H) in the whole process + 、NO 2 - And NO 3 - Etc.) and a large amount of H 2 O 2 The preparation efficiency of the plasma activated water can be obviously improved.
As shown in fig. 2, in one embodiment, the gas phase discharge assembly 100 includes an air extracting member 120, an insulating medium container 140 and an electrode 160, wherein the insulating medium container 140 is provided with an ionized gas outlet and an ionized gas inlet; the electrode is inserted into the insulating medium container 140, the air inlet end of the air pumping piece 120 is connected with the atmosphere, the air outlet end of the air pumping piece 120 is connected with the air inlet of the insulating medium container 140, the electrode ionizes air to generate air plasma, and the air plasma is transmitted to the solution A to be treated through the ionized air outlet of the insulating medium container 140.
The air pumping member 120 is used for pumping air into the insulation medium container 140, and the air pumping member 120 may be an air pump, which may be an electric air pump or a manual air pump, and pumps air from the outside into the insulation medium container 140. The insulating medium container 140 is a container 300 made of an insulating material, such as quartz glass or ceramic, which may be embodied as a quartz glass tube or a ceramic tube; the insulating medium container 140 is used for providing a high-voltage ionization place, the insulating medium container 140 is provided with an ionized gas outlet and an ionized gas inlet, wherein the gas inlet is connected with the air pumping piece 120 and is used for receiving air conveyed by the air pumping piece 120, the ionized gas outlet is used for releasing ionized air plasma, when the device is applied, the ionized gas outlet is inserted into the solution A to be treated, and the air plasma is directly transmitted into the solution A to be treated. The electrode 160 is a metal electrode, for example, a metal high-voltage rod electrode, and the metal high-voltage rod electrode may be a corrosion-resistant and ablation-resistant metal rod such as a stainless steel rod or a tungsten rod; the electrode 160 is inserted into the insulating dielectric container 140, and when a high voltage is applied to the electrode, a high voltage ionization phenomenon occurs in the insulating dielectric container 140, and an air gap between the electrode and the inner wall of the insulating dielectric container 140 is broken down to generate air plasma and O is also generated at the same time of discharge 3 NO and NO 2 Enters the solution A to be treated under the action of the airflow, and the gas and air plasma generate H in the solution A to be treated + 、NO 2 - And NO 3 - 。
Further, the gas phase discharge assembly 100 further includes a first driving power source 170, and the first driving power source 170 is connected to the electrode 160. The first driving power source 170 is used to apply high voltage to the electrodes, and specifically, the first driving power source 170 is an ac high voltage power source or a pulse dc high voltage power source having an output frequency in a range of kHZ to tens of kHZ and an output voltage amplitude in a range of kV to tens of kV. In practical applications, the output voltage of the first driving power source 170 is selected in relation to the width of the air gap between the electrode 160 and the insulating dielectric container 140, which needs to be selected to satisfy the breakdown voltage of the air gap. Generally, the air gap is about several millimeters, and the larger the air gap is, the higher the voltage required for starting discharge is.
In one embodiment, the air pumping element 120 is an air pump, the insulating medium container 140 is a medium tube made of insulating materials such as quartz glass or ceramic, the electrode is a high-pressure rod electrode, and the air pump sucks ambient air into the medium tube and introduces the ambient air into the solution a to be treated through an ion gas outlet. The high voltage rod electrode is connected with the high voltage output end of the first driving power supply 170, when a high enough AC high voltage or a pulse DC high voltage is applied to the high voltage rod electrode, the annular air gap between the high voltage rod electrode and the medium tube is broken down to generate air plasma, and O is generated while discharging 3 NO and NO 2 Enters the solution A to be treated under the action of air flow to generate H in water + 、NO 2 - And NO 3 - 。
As shown in fig. 2, in one embodiment, the gas-phase discharge assembly 100 further comprises a first porous bubble member 180, and the first porous bubble member 180 is disposed at the ionized gas outlet of the insulating medium container 140.
The first porous bubble member 180 is used for increasing the contact area of air and the solution a to be treated, so as to accelerate and enhance the dissolution of plasma gas in the solution a to be treated. Specifically, when gas (including plasma) emerges through the porous bubble member, a large number of bubbles are formed, and the gas in the bubbles is sufficiently contacted with and dissolved in the solution a to be treated. The first porous bubble piece 180 may be a bubblestone.
As shown in fig. 2, in one embodiment, the gas-liquid mixed discharge assembly 200 includes an insulator 220 and an electrode array 240, the electrode array 240 is disposed on the insulator 220, and the electrode array 240 is ionized at a gas-liquid interface.
The insulating member 220 is used to realize high voltage electrical insulation, thereby preventing accidents. The electrode array 240 is used for ionizing a gas-liquid interface in a high-voltage environment, the electrode array 240 may be a metal needle electrode array, high voltage is applied to the metal needle electrode array 240, air plasma is generated in a region (gas-liquid interface region) between a needle point of the metal needle electrode array and a liquid level of the solution A to be treated, and a large amount of discharge can be generated in liquid at the gas-liquid interface simultaneouslyH 2 O 2 . Further, the electrode array 240 may be fixed to the insulating member 220.
As shown in fig. 2, in one embodiment, the gas-liquid mixed phase discharging assembly 200 further includes a second driving power source 280, and the second driving power source 280 is connected to the electrode array 240. The second driving power supply 280 is used to apply high voltage to the electrode array 240, and specifically, the second driving power supply 280 is an alternating current high voltage power supply or a pulse direct current high voltage power supply having an output frequency in a kHZ to tens of kHZ range and an output voltage amplitude in a kV to tens of kV range.
As shown in fig. 3, in one embodiment, the gas-liquid mixed phase discharging assembly 200 includes a water pumping member 250, a gas-liquid mixed phase ionization tank 260, and a high voltage electrode 270; a water inlet of the water pumping part 250 is connected with the container 300, a water outlet of the water pumping component is connected with the gas-liquid mixed phase ionization tank 260, and a water outlet is formed in the gas-liquid mixed phase ionization tank 260; the water pumping assembly pumps the solution A to be treated in the container 300 to the gas-liquid mixed phase ionization tank 260, the high-voltage electrode 270 and the solution A to be treated in the gas-liquid mixed phase ionization tank 260 form a gas-liquid interface, the high-voltage electrode 270 is ionized at the gas-liquid interface, and the ionized solution flows back to the container 300 through a water outlet of the gas-liquid mixed phase ionization tank 260.
In this embodiment, the gas-liquid mixed phase discharge assembly 200 adopts another structure, which specifically includes a water pumping member 250, a gas-liquid mixed phase ionization tank 260 and a high voltage electrode 270, wherein the water pumping member 250 is used for pumping the solution a to be treated in the container 300 into the gas-liquid mixed phase ionization tank 260, the high voltage electrode 270 and the solution a to be treated in the gas-liquid mixed phase ionization tank 260 form a gas-liquid interface, the high voltage electrode 270 is ionized on the gas-liquid interface under a high voltage environment to generate gas plasma, and discharge generates a large amount of H in the liquid at the gas-liquid interface at the same time 2 O 2 The ionized solution flows back to the container 300 through the water outlet of the gas-liquid mixed phase ionization tank 260. Specifically, the water pumping member 250 may be a water pump, the gas-liquid mixed phase ionization tank 260 may be a water tank having a water outlet at the bottom of the side far from the water inlet, the high voltage electrode 270 may be a high voltage rod electrode wrapped by an insulating medium, and the water pump is powered on to pump the solution a to be treated in the container 300 to waterIn the tank, the water inflow is controlled to ensure that the distance between the page and the lower edge of the high-voltage rod electrode is within a range of several millimeters, after proper voltage is applied to the high-voltage rod electrode, air plasma is generated on the liquid level (gas-liquid interface) of the water tank, and a large amount of H is generated in the liquid on the liquid level of the water tank 2 O 2 The ionized solution is discharged into the container 300 through the drain.
As shown in fig. 2, in one embodiment, the plasma activated water preparation apparatus further includes a container cover 400, a vent pipe 500, and a baffle 600, the container cover 400 is provided with a first air outlet and a second air outlet, one end of the baffle 600 is connected to the container cover 400, the other end of the baffle 600 is inserted into the container 300 and is in contact with the solution a to be treated, the first air outlet and the second air outlet are respectively disposed at two sides of the baffle 600, the first air outlet is located at a side close to the gas-liquid mixed phase discharge assembly 200, and the second air outlet is located at a side far from the gas-liquid mixed phase discharge assembly 200; one end of the vent pipe 500 is connected to the first outlet, and the other end of the vent pipe 500 is inserted into the solution a to be treated.
The container cover 400 is a cover disposed at an upper end of the container 300 and is opened, and may form a relatively sealed environment with the container 300, so as to retain the air plasma generated by ionization in the container 300, to increase the contact and dissolution time of the air plasma with the solution a to be treated, and further to improve the activated water preparation efficiency. The snorkel 500 is used to form a "backflow" loop to re-flow the air plasma generated by ionization back into the solution a to be treated in the container 300 for secondary dissolution. The baffle member 600 is used for blocking the air plasma generated by ionization from being directly discharged to the atmosphere through the second air outlet, one end of the baffle member 600 is connected, specifically fixedly connected, with the container cover 400, and the other end of the baffle member 600 is inserted (submerged) into the solution A to be treated (specifically, at a position 1-2 cm away from the bottom of the container 300), so that part of the air (containing a large amount of air plasma) on the container 300 is blocked from being directly discharged to the atmosphere through the second air outlet. Further, a second porous bubble member 700 is further disposed at an end of the vent pipe 500 inserted into the solution a to be treated, and the function of the second porous bubble member 700 is similar to that of the first porous bubble member, which is not described herein again, and may also be a bubbled stone.
In practical application, in the discharging process, the gas introduced into the solution A to be treated and the gas generated above the liquid surface enter the air stone again through the first gas outlet → the pipeline → the second gas outlet for secondary dissolution, and finally the second gas outlet is discharged into the external environment. The baffle plate in the container 300 is used for reducing the direct discharge of the gas introduced into the solution A to be treated by the gas pump from the second gas outlet.
In order to explain the technical scheme of the plasma activated water preparation device in detail, the composition and the working function of the whole device are described in detail by using specific application examples.
As shown in fig. 4, the plasma activated water preparation device of the present application includes a first driving power supply 1, a second driving power supply 2, an air pump 3, a medium pipe 4, a high-voltage rod electrode 5, a bubble disk 10, a medium-wrapped ground electrode 17, a container 13, a solution to be treated 14, a high-voltage insulation board 6, a metal needle electrode array 7, a vent pipe, a baffle 12, a bubbled stone 11, a container cover, and a container cover, wherein a first air outlet 8 and a second air outlet 9 are provided, the first air outlet 8 is provided near a gas-liquid mixed phase discharge assembly, and the solution to be treated 14 is an aqueous solution. The whole working process is as follows:
the air pump 3 sucks ambient air into the medium pipe 4 and then leads the ambient air into the solution 14 to be treated through the bubble disk 10. The high-voltage rod electrode 5 is connected with the high-voltage output end of the first driving power supply 1, when enough high alternating-current high voltage or pulse direct-current high voltage is applied to the high-voltage rod electrode 5, an annular air gap between the high-voltage rod electrode 5 and the medium tube 4 is broken down, a first part of air plasma 15 is generated, and O is generated during discharging 3 NO and NO 2 The gas flow enters the water solution through the bubble tray 10, and H +, NO 2-and NO 3-are generated in the water. Preferably, the first driving power supply 1 outputs an alternating current high-voltage power supply or a pulse direct current high-voltage power supply with the frequency ranging from kHZ to tens of kHZ and the amplitude ranging from kV to tens of kV; preferably, the medium tube 4 is a quartz glass tube or a ceramic tube; preferably, the high-voltage rod electrode 5 is a corrosion-resistant and ablation-resistant metal rod such as a stainless steel rod and a tungsten rod; second driveThe power supply 2, the high-voltage insulating plate 6, the metal needle electrode array 7 and the medium-wrapped ground electrode 17 jointly form a gas-liquid mixed phase discharge system. Specifically, the high-voltage output end of the second driving power supply 2 is connected with a metal needle electrode array 7, the metal needle electrode array 7 is fixed on the upper cover plate of the water tank through a high-voltage insulation plate 6, when a sufficiently high voltage is applied to the metal needle electrode array 7, a second part of air plasma 16 is generated in the region between the needle point and the liquid level, and a large amount of H is generated in the liquid at the gas-liquid interface during discharging 2 O 2 . In the discharging process, the gas introduced into the aqueous solution and the gas generated above the liquid level enter the air bubble stone 11 again through the first gas outlet 8 through the pipeline for secondary dissolution, and finally the gas is discharged into the external environment through the second gas outlet 9. A baffle 12 in the water tank is used to reduce the direct discharge of gas from the second gas outlet 9 from the gas pump 3 into the aqueous solution.
As shown in fig. 5, the plasma activated water preparation device of the present application includes a first driving power supply 1, a second driving power supply 2, an air pump 3, a medium pipe 4, a high-voltage rod electrode 5, a bubble disk 10, a medium-wrapped ground electrode 17, a container 13, a solution to be treated 14, a water pumping piece 18, a gas-liquid mixed phase ionization tank 19, a high-voltage rod electrode 20 wrapped by an insulating medium 21, a vent pipe, a baffle 12, a bubble stone 11, a container cover, and a container cover, wherein a first air outlet 8 and a second air outlet 9 are provided on the container cover, the first air outlet 8 is disposed near the gas-liquid mixed phase discharge assembly, and the solution to be treated 14 is an aqueous solution. The whole working process is as follows:
the air pump 3 sucks ambient air into the medium pipe 4 and then leads the ambient air into the solution 14 to be treated through the bubble disk 10. The high-voltage rod electrode 5 is connected with the high-voltage output end of the first driving power supply 1, when enough high alternating-current high voltage or pulse direct-current high voltage is applied to the high-voltage rod electrode 5, an annular air gap between the high-voltage rod electrode 5 and the medium tube 4 is broken down to generate air plasma, and O is generated during discharging 3 NO and NO 2 The gas flow enters the water solution through the bubble tray 10, and H +, NO 2-and NO 3-are generated in the water. Preferably, the first driving power supply 1 outputs an alternating current high voltage power supply or a pulse direct current high voltage power supply having an output frequency in the range of kHZ to several tens of kHZ and an output voltage amplitude in the range of several kV to several tens of kV(ii) a Preferably, the medium tube 4 is a quartz glass tube or a ceramic tube; preferably, the high-voltage rod electrode 5 is a corrosion-resistant and ablation-resistant metal rod such as a stainless steel rod and a tungsten rod; the second driving power supply 2, the high-voltage insulating plate 6, the metal pin electrode array 7 and the medium-wrapped ground electrode 17 jointly form a gas-liquid mixed phase discharge system. Specifically, the high-voltage output end of the second driving power supply 2 is connected with a high-voltage rod electrode 20 wrapped by an insulating medium 32, a water pump 18 is started to pump the high-voltage rod electrode 20 wrapped by the insulating medium 21 from the position above the water solution level in the container 13, in the gas-liquid mixed phase ionization tank 19 and above the gas-liquid mixed phase ionization tank 19, the water inflow is controlled to ensure that the distance between the water level and the lower edge of the high-voltage rod electrode 20 is within a range of several millimeters, after a proper voltage is applied, a second part of air plasma 16 is generated above the water tank liquid level, and the discharged liquid flows back into the container 13 below. In the discharging process, gas introduced into the water solution and gas generated above the liquid level enter the air bubble stone 11 again through the first gas outlet 8 through the pipeline for secondary dissolution, and finally the gas is discharged into the external environment through the second gas outlet 9. A baffle 12 in the water tank is used to reduce the direct discharge of gas from the second gas outlet 9 that is introduced into the aqueous solution by the gas pump 3.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A plasma activated water preparation device is characterized by comprising a gas-phase discharge assembly, a gas-liquid mixed-phase discharge assembly and a container, wherein the container is used for containing a solution to be treated; the gas-liquid mixed phase discharging assembly and the solution to be treated form a gas-liquid interface;
the gas-phase discharge assembly ionizes air to generate air plasma, and the air plasma is transmitted to the solution to be treated; and the gas-liquid mixed phase discharge assembly is ionized at the gas-liquid interface.
2. The device of claim 1, wherein the gas-phase discharge assembly comprises a gas pumping member, an insulating medium container and an electrode, wherein the insulating medium container is provided with an ionized gas outlet and an ionized gas inlet;
the electrode is inserted into the insulating medium container, the air inlet end of the air pumping piece is connected with the atmosphere, the air outlet end of the air pumping piece is connected with the air inlet of the insulating medium container, the electrode ionizes air to generate air plasma, and the air plasma is transmitted to the solution to be treated through the ionized air outlet.
3. The apparatus of claim 2, wherein the gas phase discharge assembly further comprises a first driving power source connected to the electrode.
4. The apparatus of claim 2 or 3, wherein the gas-phase discharge assembly further comprises a first porous bubble member disposed at the ionized gas outlet port of the insulating medium vessel.
5. The apparatus of claim 1, wherein the gas-liquid mixed discharge assembly comprises an insulator and an electrode array disposed on the insulator, the electrode array forming a gas-liquid interface with the solution to be treated, the electrode array ionizing at the gas-liquid interface.
6. The apparatus of claim 5, wherein the gas-liquid mixed phase discharge assembly further comprises a second driving power source, and the second driving power source is connected with the electrode array.
7. The device of claim 1, wherein the gas-liquid mixed phase discharge assembly comprises a water pumping piece, a gas-liquid mixed phase ionization tank and a high-voltage electrode;
the water inlet of the water pumping piece is connected with the container, the water outlet of the water pumping piece is connected with the gas-liquid mixed phase ionization tank, and the gas-liquid mixed phase ionization tank is provided with a water outlet;
the water pumping piece pumps the solution to be treated in the container to the gas-liquid mixed phase ionization groove, the high-voltage electrode and the solution to be treated in the gas-liquid mixed phase ionization groove form a gas-liquid interface, the high-voltage electrode is ionized at the gas-liquid interface, and the ionized solution flows back to the container through a water outlet of the gas-liquid mixed phase ionization groove.
8. The apparatus of claim 2, 5 or 7, further comprising a container cover, a vent pipe and a baffle member, wherein the container cover is provided with a first air outlet and a second air outlet, one end of the baffle member is connected with the container cover, the other end of the baffle member is inserted into the container and is in contact with the solution to be treated, the first air outlet and the second air outlet are respectively arranged at two sides of the baffle member, the first air outlet is arranged at one side close to the gas-liquid mixed phase discharge assembly, and the second air outlet is arranged at one side far away from the gas-liquid mixed phase discharge assembly; one end of the breather pipe is connected with the first air outlet, and the other end of the breather pipe is inserted into the solution to be treated.
9. The apparatus of claim 8, further comprising a second porous bubble member connected to an end of the vent tube into which the solution to be treated is inserted.
10. The apparatus of claim 1, further comprising a ground electrode disposed at a bottom of the container.
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| CN114890499A (en) * | 2022-06-07 | 2022-08-12 | 珠海格力电器股份有限公司 | Plasma activated water preparation device |
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| CN114890499A (en) * | 2022-06-07 | 2022-08-12 | 珠海格力电器股份有限公司 | Plasma activated water preparation device |
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