CN113941203A

CN113941203A - Air purification device for treating pollutants by activating water based on plasma generation

Info

Publication number: CN113941203A
Application number: CN202111174375.6A
Authority: CN
Inventors: 孔惟正
Original assignee: Dalian University of Technology
Current assignee: Dalian University of Technology
Priority date: 2021-10-09
Filing date: 2021-10-09
Publication date: 2022-01-18

Abstract

The invention discloses an air purification device for treating pollutants by activating water based on plasma generation, which comprises an air inlet fan, a purification water tank, a drain tank, a low-temperature plasma generator, an air inlet pipe, a middle pipe, a return pipe, an air outlet pipe and a water replenishing pipe, wherein the air inlet pipe is connected into the purification water tank, the air inlet fan is installed on the air inlet pipe, the purification water tank is connected with the drain tank through the middle pipe, the bottom of the drain tank is connected back to the purification water tank through the return pipe, the top of the drain tank is connected with the air outlet pipe to discharge air outwards, the side wall of the purification water tank is also connected with the water replenishing pipe, and the low-temperature plasma generator is connected into the purification water tank and injects plasma into the purification water tank. The number of the purified water tanks is two, the tail end of the return pipe, which is far away from the drain tank, is divided into two parts, which are respectively connected with the bottoms of the two purified water tanks, and the return pipe is only communicated with one purified water tank at the same time.

Description

Air purification device for treating pollutants by activating water based on plasma generation

Technical Field

The invention relates to the technical field of air purification, in particular to an air purification device for treating pollutants by generating activated water based on plasma.

Background

With the improvement of living standard, people pay more and more attention to air quality, air purification devices in various occasions respectively clean pollutants in the air, and the pollutants in the air mainly comprise dust particles PM10/2.5, bacteria, carbon monoxide, nitrogen oxides and the like.

Aiming at the elimination of bacteria, generally ultraviolet sterilization or oxidant sterilization, and aiming at the elimination of dust particles, a filtering mode is generally adopted, but if a filter screen is too thin in the traditional filtering mode, the filter screen is easy to block and needs to be replaced in time, and if the filter screen is too thick, dust of PM2.5 grade can not be eliminated, so the filtering effect is not good, some structures using water to filter dust slowly appear, air is injected into a water body, clean gas overflows in a bubble form, dust is trapped in the water body, and the water body is replaced regularly, however, the mode also has certain problems, for example, when the gas flow is large, the bubbles are large, the dust is retained in the center of the bubbles and is not contacted with the water body, the filtering effect is not stable, and if the water body is used for a period of time, the replacement is needed, the trapping effect of slightly dirty and thick water bodies on the dust is reduced, therefore, the water consumption is large.

Disclosure of Invention

The present invention aims at providing an air purification device based on plasma generation and activated water treatment of pollutants, so as to solve the problems in the background art.

In order to solve the technical problems, the invention provides the following technical scheme:

air purification device based on water treatment pollutant is activated in plasma production, purifier includes air intake fan, purified water tank, the drain tank, low temperature plasma generator, the air-supply line, the intermediate pipe, the back flow, go out the tuber pipe, the moisturizing pipe, the air-supply line is connected to in the purified water tank, install air intake fan on the air-supply line, be connected through the intermediate pipe between purified water tank and the drain tank, drain tank bottom is connected back purified water tank through the back flow, the drain tank top is connected out the tuber pipe and is given vent to the sun, still be connected with the moisturizing pipe on the purified water tank lateral wall, low temperature plasma generator is connected to in the purified water tank and toward the purified water tank in pour into plasma.

Air to be purified is extracted from an air inlet pipe by an air inlet fan and enters a purified water tank, a water body is stored in the purified water tank, low-temperature plasma is injected into the water body, a large number of free radical radicals are stored in the water body, a large number of bacteria can be killed by a high oxidation-reduction potential, dust particles can be trapped by the water body and are stored in the purified water tank when the air passes through the water body, the purified air overflows from the water body and is gathered to the upper part of the purified water tank and then enters a drainage tank through an intermediate pipe, the arrangement of the drainage tank considers that ascending air wraps part of water vapor or fog drops, liquid water is gathered in the drainage tank and then returns to the purified water tank through a return pipe, the gas discharged from a gas outlet pipe at the top of the drainage tank is the purified gas, and a water replenishing pipe replenishes when the water in the purified water tank is less or the water is stored with a large number of dust particles to become dirty, When thick, the water is replaced and supplemented with new water.

Furthermore, the purified water tank comprises a tank body and baffle plates, the baffle plates are arranged on the inner wall of the tank body in a crossed mode according to the height, and the air inlet pipe is inserted into the bottom in the tank body. The baffle plate shields the gas entering from the air inlet pipe and bends to rise, and contacts with more water bodies in the rising process, so that the dust filtering effect is increased, the overflowing time of bacteria in the plasma activated water is prolonged, and the sterilization rate is improved.

Furthermore, the baffle plates are arranged in an inclined mode, and the lower position of the single baffle plate in the inclined direction is one end connected with the inner wall of the box body. The inclined baffle plate guides the bubbles to prevent gas from being accumulated at the corner of the baffle plate.

Furthermore, gauze is attached to the lower surface of the baffle plate. The lower surface of baffling board is the position that rising gas passed through, and gauze can cut big group's gas, makes it become individual microbubble, and the composition of wrapping up in the microbubble contacts with surrounding liquid more easily, and the dust granule is also held back by the water more easily, and large-scale bubble is then wrapped up in easily and is taken some dust and directly spill over from the aquatic, and dust removal effect is not good.

Furthermore, purifier still includes booster fan, and booster fan sets up on the intermediate pipe, increases the fan and extracts the gas in purified water tank top and annotate toward the drain tank, sets up the pressure regulating on-off valve on the play tuber pipe, also sets up the pressure regulating on-off valve on the back flow. The arrangement of the booster fan on the middle pipe can change the relative magnitude of the pressure difference between the purified water tank and the drain tank, the pressure state is changed into that the pressure in the purified water tank is small, the pressure in the drain tank is large, the small pressure state in the purified water tank enables the water in the purified water tank to be more easily gasified, a large amount of water vapor mixed with the air to be purified and the dust which is not filtered by the liquid water in the purified water tank passes through the middle pipe and enters the drain tank, the high pressure state in the drain tank enables the water vapor to be liquefied into a water body again, and the attachment position of the gaseous water is needed in the pressurizing and liquefying process, so that the dust which is suspended in the mixed gas and is not intercepted by the purified water tank can become condensation points one by one, the gaseous water is preferentially separated out on dust particles, after the particles are wrapped by a liquefaction layer, the weight is increased and is not easily wrapped by the gas any more, and the dust falls in the drain tank, the pressure regulating on-off valve is used for adjusting the relative size of the pressure, the opening of the pressure regulating on-off valve is reduced, the flow resistance is increased, the pressure in the drain tank is higher, and more water is analyzed.

Furthermore, the number of the purification water tanks is two, the air inlet pipe is divided into two parts after passing through the air inlet fan and then respectively enters the bottoms of the two purification water tanks, the middle pipe is also connected with the tops of the two purification water tanks in a branch pipe mode, the tail end of the return pipe, far away from the drain tank, is divided into two parts and respectively connected with the bottoms of the two purification water tanks, pressure regulating on-off valves are respectively arranged on the branch pipes connected with the return pipe and the two purification water tanks, and the water supplementing pipe and the low-temperature plasma generator are also respectively connected with the two purification water tanks;

at the same time, the return pipe is only communicated with one purified water tank.

When the two purified water tanks are used, only one purified water tank is connected with the drain tank through the return pipe, air is respectively introduced into the two purified water tanks through the drainage of the air inlet fan, the air overflows the two purified water tanks after primary dust filtration and sterilization, a dust particle, water vapor, air and polluted gas mixture is pressurized and input into the drain tank by the booster fan, the water vapor is condensed, the dust particle becomes a water drop core and is also intercepted in a large proportion, water intercepted from the drain tank returns to one purified water tank through the return pipe, the other purified water tank is removed from the water supplementing pipe and is not supplemented with water, so that the water in the tank is less and becomes thick, the dust water in the purified water tank without water is concentrated and then is discharged through the discharge pipe or cleaned by maintenance personnel, then the purified water is supplemented into the clean water through the water supplementing pipe, and the traditional water filtering type purification structure, all need in time change inside water, the purification performance who prevents dirty water descends excessively, and under the structure of two water purification tank and drain box in this application, even there is not the water in the water purification tank of make-up water dirty and thick, can not cause the purification performance of integrated device to descend yet, because the dust that the water tank failed to filter down can be in drain box department by a large amount of condensate water parcel interception, deposit the water purification tank of thick dirty water and change the water after, another water purification tank of next cycle carries out dirty water concentration, the dirty water that the device whole exhaust then is concentrated dirty water always, the consumption of saving water.

Furthermore, the inner walls of the middle pipe and the drain tank are coated with films so that the roughness is less than 1.6. The middle pipe and the inner wall of the drain tank are smooth, so that the condensation position of the gaseous water is prevented from being the condensation position of the gaseous water, the condensation position of the gaseous water is all dust particles which are not filtered by the purified water tank, and all particles entering the drain tank become water cores.

Furthermore, the drain tank is in an inverted cone shape. The conical inner wall guides the condensed water.

Further, the intermediate pipe connects the side wall of the drain tank in a tangential direction. The mixture entering the drainage tank through the middle pipe flows in tangentially, the separation effect with clean air is increased, centrifugally separated water drops cling to the inner wall of the drainage tank, and the clean air flows out from the middle position of the top of the drainage tank and is exhausted out of the device through the air outlet pipe.

Compared with the prior art, the invention has the following beneficial effects: the invention uses plasma to activate water, primarily filters dust particles in air and oxidizes and eliminates bacteria in gas, when water is passed, particles carried by insoluble gas bubbles enter a hydrophobic tank, at the moment, the gas contains a large amount of gaseous water, after pressurization, the water is liquefied, the liquid water is separated out by taking the particles as cores, the particles are respectively wrapped by water films to increase weight, and are intercepted at the hydrophobic tank and return to a purified water tank through a return pipe to wait for cleaning, the two purified water tanks respectively carry out primary filtering operation, but only one water tank has water backflow, the other water tank concentrates dirty water and alternately concentrates the dirty water, the device integrally discharges the concentrated dirty water, and the water resource consumption is saved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic of the basic flow diagram of the present invention;

FIG. 2 is a schematic of the complete flow of the present invention;

FIG. 3 is a schematic view showing the construction of a purified water tank according to the present invention;

FIG. 4 is a schematic view of the construction of the trap of the present invention;

in the figure: 1-air inlet fan, 2-purified water tank, 21-box, 22-baffle, 3-booster fan, 4-drain tank, 5-low temperature plasma generator, 61-air inlet pipe, 62-middle pipe, 63-return pipe, 64-air outlet pipe, 65-water replenishing pipe, and 7-pressure regulating on-off valve.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides the following technical solutions:

air purification device based on water treatment pollutant is activated in plasma production, purifier includes air intake fan 1, purifying water tank 2, drain tank 4, low temperature plasma generator 5, air-supply line 61, intermediate pipe 62, back flow 63, go out tuber pipe 64, moisturizing pipe 65, air-supply line 61 is connected to in the purifying water tank 2, install air intake fan 1 on the air-supply line 61, connect through intermediate pipe 62 between purifying water tank 2 and the drain tank 4, drain tank 4 bottom is connected back purifying water tank 2 through back flow 63, drain tank 4 top is connected out tuber pipe 64 and is given vent to the sun, still be connected with moisturizing pipe 65 on the purifying water tank 2 lateral wall, low temperature plasma generator 5 is connected to in the purifying water tank 2 and pours into plasma into purifying water tank 2 into.

Air to be purified is extracted from the air inlet pipe 61 by the air inlet fan 1 and enters the purified water tank 2, water is stored in the purified water tank 2, low-temperature plasma is injected into the water, a large amount of radical radicals are stored in the water, most bacteria can be killed by a high oxidation-reduction potential, moreover, when the air passes through the water, dust particles can be intercepted by the water and are stored in the purified water tank 2, the purified air overflows from the water and is converged to the upper part of the purified water tank 2, then the air enters the drain tank 4 through the middle pipe 62, the arrangement of the drain tank 4 considers that the ascending air carries part of water vapor or fog drops, liquid water is converged in the drain tank 4 and then returns to the purified water tank 2 through the return pipe 63, the gas discharged from the air outlet pipe 64 at the top of the drain tank 4 is the purified gas, and the water replenishing pipe 65 replenishes when the water in the purified water tank 2 is less or a large amount of dust particles are stored in the purified water tank to become dirty, When thick, the water is replaced and supplemented with new water.

The purified water tank 2 includes a tank body 21 and a baffle plate 22, the baffle plate 22 is arranged on the inner wall of the tank body 21 in a height-crossing manner, and an air inlet pipe 61 is inserted into the bottom of the tank body 21. The baffle plate 22 shields the gas entering from the air inlet pipe 61 and bends and rises, and contacts with more water bodies in the rising process, so that the dust filtering effect is improved, the overflowing time of bacteria in the plasma activated water is prolonged, and the sterilization rate is improved.

The baffle 22 is arranged obliquely, and the lower part of the single baffle 22 in the oblique direction is one end connected with the inner wall of the box body 21. The inclined baffle 22 directs the gas bubbles to prevent gas from accumulating at the corners of the baffle 22.

Gauze is attached to the lower surface of the baffle 22. The lower surface of the baffle plate 22 is a position through which the rising gas passes, the gauze can cut large gas clusters to form individual micro bubbles, components wrapped in the micro bubbles are more easily contacted with surrounding liquid, dust particles are more easily intercepted by a water body, and large bubbles are easy to wrap a part of dust and directly overflow from water, so that the dust removal effect is poor.

The purification device further comprises a booster fan 3, the booster fan 3 is arranged on the middle pipe 62, the booster fan 3 is added to extract gas at the top of the purified water tank 2 and inject the gas into the drain tank 4, the pressure regulating on-off valve 7 is arranged on the air outlet pipe 64, and the pressure regulating on-off valve 7 is also arranged on the return pipe 63. As shown in fig. 1, the arrangement of the booster fan 3 on the middle pipe 62 can change the relative magnitude of the pressure difference between the purified water tank 2 and the drain tank 4, the pressure state is changed to be that the pressure in the purified water tank 2 is small, the pressure in the drain tank 3 is large, the moisture in the purified water tank 2 is more easily gasified due to the smaller pressure state, a large amount of water vapor mixed with the air to be purified and the dust not filtered by the liquid water in the purified water tank 2 pass through the middle pipe 62 and enter the drain tank 4, the high pressure state in the drain tank 4 causes the water vapor to be re-liquefied into water, the gaseous water needs to have an attachment position in the pressurization and liquefaction process, so that the dust suspended in the mixed gas and not retained by the purified water tank 2 becomes a condensation point, the gaseous water preferentially precipitates on dust particles, and the particles are wrapped by a liquefaction layer, the weight is increased, and is not easily wrapped by the gas, thereby falling in the trap 4, returning to the purified water tank 2 via the return pipe 63, the pressure regulating on-off valve 7 is used for adjusting the relative magnitude of the pressure, when the opening of the pressure regulating on-off valve 7 is reduced and the flow resistance is increased, the pressure in the trap 4 is higher, thereby more water is analyzed.

The number of the purification water tanks 2 is two, the air inlet pipe 61 is divided into two parts after passing through the air inlet fan 1 and then respectively enters the bottoms of the two purification water tanks 2, the middle pipe 62 is also connected with the tops of the two purification water tanks 2 in a branch pipe form, the tail end of the return pipe 63, which is far away from the drain tank 4, is divided into two parts and respectively connected with the bottoms of the two purification water tanks 2, the branch pipes connected with the return pipe 63 and the two purification water tanks 2 are respectively provided with a pressure regulating on-off valve 7, and the water supplementing pipe 65 and the low-temperature plasma generator 5 are also respectively connected with the two purification water tanks 2;

at the same time, the return pipe 63 communicates with only one purified water tank 2.

As shown in fig. 2, when two purified water tanks 2 are used, only one purified water tank 2 is connected to the drain tank 4 via the return pipe 63, and the analysis is performed by taking as an example that the pressure-regulating on-off valve 7 of the lower part of the purified water tank 2 on the left side in fig. 2 is closed and the pressure-regulating on-off valve 7 of the lower part of the purified water tank 2 on the right side is opened, that is, the purified water tank 2 on the right side is connected to the drain tank 4:

air is guided by an air inlet fan 1 to respectively enter two purified water tanks 2, the air overflows the two purified water tanks 2 after primary dust filtration and sterilization, dust particles, steam, air and pollution gas mixture is pressurized and input into a drain tank 4 by a booster fan 3, the steam condenses, the dust particles become water drop cores and are intercepted in a large proportion, water intercepted from the drain tank 4 returns to the right purified water tank 2 through a return pipe 63, the left purified water tank 2 is not supplemented with water except a water supplementing pipe 65, so that the water in the tank is less and becomes thick, the dust water in the left purified water tank 2 is concentrated and then drained through a drain pipe or cleaned by maintenance personnel, the concentrated dirty water is then supplemented into a clean water body through the water supplementing pipe 65, the traditional purification structure of the water body needs to be replaced with the internal water body in time, and the purification capacity of the dirty water is prevented from being reduced too much, and under two purified water tank 2 and drain tank 4's structure in this application, even the water is dirty and dense in left purified water tank 2, can not arouse overall installation's purification performance to descend yet, because the left side water tank fails the dust that filters down and can locate to be wrapped up by a large amount of condensate water at drain tank 4 and stop, left purified water tank 2 is changed behind the water, next cycle right side purified water tank 2 carries out dirty water and concentrates, namely, let left side purified water tank 2 pass through back flow 63 and connect drain tank 4, cut off right side purified water tank 2 and pass through back flow 63 and drain tank 4's being connected, the dirty water of the whole exhaust of device then is concentrated dirty water always, the consumption of sparingly water.

The inner walls of the intermediate pipe 62 and the drain tank 4 are coated so that the roughness is less than 1.6. The middle pipe 62 and the inner wall of the steam trap 4 are smooth so as to prevent the condensation position of the gaseous water, the condensation position of the gaseous water is all dust particles which are not filtered by the purified water tank 2, and all the particles entering the steam trap 4 become water cores.

The drain tank 4 is in an inverted cone shape. The conical inner wall guides the condensed water.

The intermediate pipe 62 connects the side wall of the trap 4 in a tangential direction. The mixture entering the steam trap 4 through the middle pipe 62 flows in tangentially, the separation effect with the clean air is increased, the centrifugally separated water drops cling to the inner wall of the steam trap 4, and the clean air flows out from the middle position of the top of the steam trap 4 and is discharged out of the device through the air outlet pipe 64.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Air purification device based on water treatment pollutant is activated in plasma production, its characterized in that: the purification device comprises an air inlet fan (1), a purification water tank (2), a drain tank (4), a low-temperature plasma generator (5), an air inlet pipe (61), an intermediate pipe (62), a return pipe (63), an air outlet pipe (64) and a water supplementing pipe (65), the air inlet pipe (61) is connected into the purified water tank (2), the air inlet fan (1) is arranged on the air inlet pipe (61), the purified water tank (2) is connected with the drain tank (4) through a middle pipe (62), the bottom of the drain tank (4) is connected with the purified water tank (2) through a return pipe (63), the top of the drain tank (4) is connected with an air outlet pipe (64) to discharge air outwards, the side wall of the purified water tank (2) is also connected with a water replenishing pipe (65), the low-temperature plasma generator (5) is connected into the purification water tank (2) and injects plasma into the purification water tank (2).

2. The plasma-based activated water pollutant air purification device of claim 1, wherein: the purification water tank (2) comprises a tank body (21) and baffle plates (22), the baffle plates (22) are arranged on the inner wall of the tank body (21) in a crossed mode according to the height, and the air inlet pipe (61) is inserted into the bottom of the tank body (21).

3. The plasma-based activated water pollutant air purification device of claim 2, wherein: the baffle plates (22) are obliquely arranged, and the lower part of the single baffle plate (22) in the oblique direction is one end connected with the inner wall of the box body (21).

4. The plasma-based activated water pollutant air purification device of claim 3, wherein: gauze is attached to the lower surface of the baffle plate (22).

5. The plasma-based activated water pollutant air purification device of claim 1, wherein: purifier still includes booster fan (3), booster fan (3) set up on intermediate pipe (62), increase fan (3) and extract during purified water tank (2) top gas is annotated toward drain tank (4), it sets up pressure regulating on-off valve (7) to go out on tuber pipe (64), also set up pressure regulating on-off valve (7) on back flow (63).

6. The plasma-based activated water pollutant air purification device of claim 5, wherein: the device comprises two purification water tanks (2), an air inlet pipe (61) is divided into two parts after passing through an air inlet fan (1) and then respectively enters the bottoms of the two purification water tanks (2), a middle pipe (62) is also connected with the tops of the two purification water tanks (2) in a branch pipe manner, the tail end of a return pipe (63) far away from a drain tank (4) is divided into two parts and respectively connected with the bottoms of the two purification water tanks (2), pressure regulating on-off valves (7) are respectively arranged on the branch pipes connecting the return pipe (63) and the two purification water tanks (2), and a water supplementing pipe (65) and a low-temperature plasma generator (5) are also respectively connected with the two purification water tanks (2);

at the same time, the return pipe (63) is communicated with only one purified water tank (2).

7. The plasma-based activated water pollutant air purification device of claim 5, wherein: the inner walls of the middle pipe (62) and the drain tank (4) are coated with films to ensure that the roughness is less than 1.6.

8. The plasma-based activated water pollutant air purification device of claim 5, wherein: the drain tank (4) is in an inverted cone shape.

9. The plasma-based activated water pollutant air purification device of claim 8, wherein: the central pipe (62) is connected tangentially to the side wall of the steam trap (4).