Circulating type toxic and harmful gas purifier

Abstract

The utility model is applicable to the technical field of air purifiers, and discloses a circulating type toxic gas purifier which is applicable to purification of one or more gases such as radioactive gases, acid gases, alkaline gases, hydrogen sulfide, mercury vapor and the like. The modified activated carbon or the modified nano carbon fiber is used as an adsorption purification material of the purification module, so that the new purification module has higher adsorption capacity and adsorption selectivity, the purification efficiency of the purification machine can be improved, and the purification module can stably play a purification role when the purification machine is used for a long time in a high-humidity environment. The pulse discharge mechanism is arranged above the first air outlet of the air inlet fan, and the pulse discharge mechanism can be periodically started, so that air entering the machine shell can be ionized before entering the purification module, and when the ionized air enters the purification module, the air can be purified by the pulse discharge mechanism. The germs adsorbed on the modified activated carbon and the modified nano carbon fiber can be killed.

Description

Technical Field

[0001] This utility model relates to the field of air purifier technology, and in particular to a circulating toxic gas purifier. Background Technology

[0002] A circulating toxic gas purifier is a device specifically designed to continuously treat and purify toxic gases in the air, enabling air recirculation. It is widely used in medical, environmental, and biological laboratory fields. For example, in hospital wards, especially respiratory and infectious disease wards, patients exhale gases containing pathogens, and there may also be harmful gases produced by residual chemicals such as disinfectants. The continuous operation of a circulating toxic gas purifier effectively removes these harmful components, creating a healthy air environment for patients and medical staff and reducing the risk of cross-infection.

[0003] Existing circulating toxic gas purifiers typically include multiple functional modules such as air intake, purification, filtration, and exhaust. Specifically, the purification module usually consists of an activated carbon adsorption filter layer (such as the activated carbon filter layer disclosed in Chinese patent document CN210220074U). However, activated carbon adsorption filters suffer from relatively low adsorption capacity and their adsorption and purification efficiency is greatly affected by humidity, significantly reducing the air purification effect of circulating toxic gas purifiers. Furthermore, after adsorbing pathogens from the air, the activated carbon adsorption filter layer does not eliminate them. Under suitable conditions, pathogens may desorb from the activated carbon surface and re-enter the air, causing secondary pollution. Simultaneously, the survival and reproduction of pathogens on the activated carbon adsorption filter layer can clog its pore structure, leading to a decline in the activated carbon's adsorption performance.

[0004] It is evident that existing technologies still need improvement and enhancement. Utility Model Content

[0005] The present invention provides a circulating toxic gas purifier, which aims to solve the problems that the environment affects the adsorption and purification effect and that pathogens cannot be eliminated on the activated carbon adsorption filter layer when the purification module of the circulating toxic gas purifier uses an activated carbon adsorption filter layer.

[0006] To achieve the above objectives, the solution provided by this utility model is as follows:

[0007] A circulating toxic gas purifier includes a housing with an air inlet channel on its bottom side, an air intake fan disposed inside the housing and connected to the air inlet channel, a pulse discharge mechanism, and a purification module; the air intake fan has a first air outlet; the pulse discharge mechanism is located above the first air outlet; the purification module is located above the pulse discharge mechanism, and the purification module is a modified activated carbon purification module or a modified carbon nanofiber purification module; the housing has a second air outlet, which is located above the purification module.

[0008] Optionally, the modified activated carbon purification module includes a first outer shell, a grid frame horizontally disposed within the first outer shell, filter screens disposed on the top and bottom surfaces of the grid frame, and modified activated carbon filled in each cell of the grid frame; the first outer shell has a first opening at both the bottom and top.

[0009] Optionally, the modified carbon nanofiber purification module includes a second outer shell, a support component disposed inside the second outer shell and connected to the inner wall of the second outer shell, and a carbon fiber felt disposed on the support component. The bottom and top of the second outer shell are provided with second openings, and the support component has ventilation holes or a first air duct is formed between the support component and the carbon fiber felt.

[0010] Optionally, the pulse discharge mechanism includes an insulating shell, a mesh electrode disposed within the insulating shell, and a needle-shaped high-voltage electrode disposed within the insulating shell. The needle-shaped high-voltage electrode is connected to the positive terminal of the high-voltage pulse power supply, and the tip of the needle-shaped high-voltage electrode faces the upward-facing mesh electrode. The mesh electrode is connected to the negative terminal of the high-voltage pulse power supply. The bottom surface of the insulating shell is provided with an air inlet, and the top surface of the insulating shell is provided with an air outlet.

[0011] Optionally, both the air inlet and the air outlet are grille holes.

[0012] Optionally, the insulating housing includes a housing body and a detachable air outlet grille on the top of the housing body; the inner wall of the housing body is provided with an L-shaped insulating support frame, and the mesh electrode is disposed on the L-shaped insulating support frame.

[0013] Optionally, the bottom of the outer casing is vertically provided with a rod assembly, which includes two parallel insulating rods. The upper part of the insulating rods is provided with a U-shaped slot, and the needle-shaped high-voltage electrode is horizontally placed in the U-shaped slot.

[0014] Optionally, the first air outlet is connected to an air outlet cover, which covers the air inlet.

[0015] Beneficial effects:

[0016] This utility model provides a circulating toxic gas purifier, which is suitable for purifying one or more gases such as radioactive gases, acidic gases, alkaline gases, hydrogen sulfide, and mercury vapor. By using modified activated carbon or modified carbon nanofibers as the adsorption and purification material of the purification module, the new purification module has a higher adsorption capacity and adsorption selectivity than ordinary activated carbon purification modules, thereby improving the purification efficiency of the purifier. Furthermore, the purification module can stably perform its purification function when the purifier is used for a long time in a high humidity environment.

[0017] In addition, by setting a pulse discharge mechanism above the first air outlet of the air inlet, the pulse discharge mechanism can be turned on periodically, so that the air entering the casing can be ionized before entering the purification module. The ionized air can flow upward to the purification module under the action of the electric field and the propulsion of the airflow. When the ionized air enters the purification module, it can kill the bacteria adsorbed on the modified activated carbon and modified carbon nanofibers, preventing the bacteria from desorbing from the purification module and re-entering the air, causing secondary pollution. At the same time, the adsorption performance and purification efficiency of the purification module will not decrease. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the circulating toxic gas purifier provided by this utility model when using the modified activated carbon purification module.

[0019] Figure 2 This is a schematic diagram of the structure of the circulating toxic gas purifier provided by this utility model when using the modified nano-carbon fiber purification module.

[0020] Figure 3 This is a schematic diagram of the modified activated carbon purification module.

[0021] Figure 4 yes Figure 3 Enlarged view of part A in the middle.

[0022] Figure 5 This is a schematic diagram of the modified carbon nanofiber purification module in the first implementation method.

[0023] Figure 6 This is a schematic diagram of the pulse discharge mechanism.

[0024] Figure 7 This is a schematic diagram of the structure of the insulating plug.

[0025] Figure 8 This is a simplified structural diagram of a corrugated steel mesh.

[0026] Figure 9 yes Figure 8 Enlarged view of section B.

[0027] Figure 10 This is a schematic diagram of a structure where corrugated support steel mesh is spliced ​​together.

[0028] Figure 11 yes Figure 10 Enlarged view of section C.

[0029] Figure 12 This is a schematic diagram of the modified carbon nanofiber purification module in the second implementation method.

[0030] Figure 13 This is a schematic diagram of the structure of the carbon fiber felt.

[0031] Figure 14 This is a top view of the modified carbon nanofiber purification module in the second implementation.

[0032] Figure 15 yes Figure 14 Sectional view along the DD direction.

[0033] Figure 16 This is a diagram showing the relative positions of the first and second corrugated plates.

[0034] Explanation of icon numbers:

[0035] 1-Casing; 101-Second air outlet;

[0036] 2-Intake passage;

[0037] 3-Inlet fan; 301-First outlet;

[0038] 4-Pulse discharge mechanism; 41-Insulating shell; 411-Shell body; 4111-Air inlet; 412-Air outlet grille; 4121-Air outlet; 413-L-shaped insulating bracket; 414-Insulating rod; 4141-U-shaped slot; 42-Mesh electrode; 43-Needle-shaped high-voltage electrode;

[0039] 5-Purification module; 51-First outer shell; 511-First opening; 52-Grate frame; 53-Filter screen; 54-Support assembly; 541-Insertion part; 542-Insertion block; 5421-Insertion groove; 55-Carbon fiber felt; 56-Second outer shell; 561-Second opening; 57-Support plate; 58-Second corrugated plate; 59-Modified activated carbon;

[0040] 6-Air vent cover;

[0041] 7-First air duct; 8-Second air duct; 9-Upper concave part; 10-Lower concave part. Detailed Implementation

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0043] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this utility model are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0044] It should also be noted that when a component is referred to as "fixed to" or "attached to" another component, it can be directly on the other component or may have an intervening component present. When a component is referred to as "connected to" another component, it can be directly connected to the other component or may have an intervening component present.

[0045] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0046] Please see Figures 1 to 6 This utility model provides a circulating toxic gas purifier, including a housing 1 with an air inlet channel 2 on the bottom side, an air intake fan 3 located inside the housing 1 and connected to the air inlet channel 2, a pulse discharge mechanism 4 located above a first air outlet 301 of the air intake fan 3, and a purification module 5 located above the pulse discharge mechanism 4. The housing 1 has a second air outlet 101, which is located above the purification module 5, thereby allowing air purified by the purification module 5 to be discharged to the outside of the purifier.

[0047] Specifically, the air intake fan 3 is used to draw air (which may be toxic gas) from outside the circulating toxic gas purifier into the purifier's interior, i.e., the casing 1, and to allow the air to pass sequentially from bottom to top through the pulse discharge mechanism 4 and the purification module 5. The purification module 5 can be a modified activated carbon purification module. Compared to ordinary activated carbon purification modules, modified activated carbon purification modules can use modified activated carbon modified with impregnating agents as the adsorption and purification material. The surface of the modified activated carbon obtained through impregnation agent modification can generate or increase various oxygen-containing functional groups (such as hydroxyl groups), and the specific surface area and pore number of the modified activated carbon can be significantly increased. Therefore, the adsorption capacity of the modified activated carbon can be improved, the adsorption selectivity can be enhanced, and it can preferentially adsorb toxic gases. At the same time, the modified activated carbon has strong anti-interference ability and can stably exert its purification effect when used for a long time in a high-humidity environment.

[0048] Specifically, the purification module 5 can also be a modified carbon nanofiber purification module. This module uses modified carbon nanofiber as the adsorption and purification material. Through modification treatment, the carbon nanofiber acquires a large number of oxygen-containing functional groups capable of adsorbing and purifying specific gaseous pollutants. Therefore, it can be used for the purification of toxic gas molecules, viruses, bacteria, incense smoke, cooking fumes, and other gaseous pollutants. Compared to ordinary activated carbon, carbon nanofiber has an extremely well-developed microporous structure, with a specific surface area reaching 1000-2000 m². 2 / g, after modification, the nanofibers exhibit high purification efficiency, at least an order of magnitude higher than ordinary granular activated carbon. Furthermore, during activation, different oxygen-containing groups are generated on the surface of the nanofibers. Under the influence of water, some of these groups can be oxidized to hydroxyl groups, increasing the surface redox capacity and making the nanofibers suitable for high-humidity environments, demonstrating excellent high-humidity resistance. Moreover, the number of 2nm micropores suitable for adsorbing gaseous pollutants in the same weight of nanofibers is more than 1000 times that of granular activated carbon, and its adsorption capacity is more than 10 times that of granular activated carbon. Therefore, when modified nanofibers are used as the adsorption and purification material in purification module 5, the purification module 5 exhibits high purification efficiency and can stably perform its purification function during long-term use in high-humidity environments.

[0049] Furthermore, this invention provides a pulse discharge mechanism 4 above the first air outlet 301 of the air inlet 3. The pulse discharge mechanism 4 can be activated periodically, allowing the air entering the housing 1 to be ionized before entering the purification module 5. The ionized air then flows upwards towards the purification module 5 under the influence of the electric field and airflow. This allows the ionized air to eliminate bacteria adsorbed on the modified activated carbon and modified carbon nanofibers when it enters the purification module 5, preventing bacteria from desorbing from the purification module 5 and re-entering the air, thus preventing secondary pollution. At the same time, the adsorption performance and purification efficiency of the purification module 5 will not decrease.

[0050] like Figure 3 and Figure 4 As shown, optionally, when the purification module 5 is a modified activated carbon purification module, the modified activated carbon purification module may include a first outer shell 51, a grid frame 52 horizontally disposed within the first outer shell 51, filter screens 53 disposed on the top and bottom surfaces of the grid frame 52, and modified activated carbon filled in each frame of the grid frame 52. Specifically, the first outer shell 51 may be disposed close to the interior of the housing 1; the grid frame 52 is horizontally installed within the first outer shell 51, and the modified activated carbon is filled in each frame of the grid frame 52; the filter screens 53 are disposed on the top and bottom surfaces of the grid frame 52, and the filter screens 53, while supporting the modified activated carbon, also prevent the modified activated carbon from leaking out from above the grid frame 52.

[0051] Understandably, the mesh size of the filter 53 should be chosen to ensure that the modified activated carbon does not easily leak out from the filter 53 at the bottom of the grille frame 52, while allowing air to rise through the filter 53 and the modified activated carbon. Furthermore, to improve the adsorption and purification effect of the purification module 5, the grille frame 52 can have more than one layer, thus allowing multiple layers of modified activated carbon to be placed within the purification module 5 simultaneously.

[0052] In order to allow air to rise through the purification module 5, the first housing 51 has a first opening 511 at both the bottom and top.

[0053] like Figure 5 or Figure 12As shown, optionally, when the purification module 5 is a modified carbon nanofiber purification module, the modified carbon nanofiber purification module includes a second outer shell 56, a support component 54 disposed inside the second outer shell 56 and connected to the inner wall of the second outer shell 56, and a carbon fiber felt 55 disposed on the support component 54. The second outer shell 56 has second openings 561 at both its bottom and top to allow air to pass upward through the modified carbon nanofiber purification module. Like the first outer shell 51, the second outer shell 56 can also be disposed close to the interior of the housing 1. The support component 54 supports the carbon fiber felt 55 containing modified carbon nanofibers. When the carbon fiber felt 55 is placed on the support component 54, it should be in contact with all the inner walls of the second outer shell 56. Therefore, when air flows upward through the modified carbon nanofiber purification module, the air can contact the modified carbon nanofibers in the carbon fiber felt maximally, allowing bacteria and harmful substances in the air to be effectively adsorbed by the modified carbon nanofibers.

[0054] In order to allow air to pass upward through the carbon fiber felt 55, and thus allow the modified nanofibers to effectively adsorb germs and harmful substances in the air, the support component 54 has ventilation holes so that air can enter the carbon fiber felt 55 upward through the ventilation holes, or a first air duct 7 is formed between the support component 54 and the carbon fiber felt 55 so that air can first enter the first air duct 7 and then flow into the carbon fiber felt 55.

[0055] Optionally, the carbon fiber felt 55 includes a modified carbon nanofiber layer and a nonwoven fabric wrapped around the modified carbon nanofiber layer. The modified carbon nanofiber layer is formed by stacking modified carbon nanofibers together; however, modified carbon nanofibers are brittle and easily scatter, making them inconvenient to clean. Therefore, to prevent the modified carbon nanofibers from scattering, this embodiment wraps a nonwoven fabric around the modified carbon nanofiber layer, thereby preventing the modified carbon nanofibers from scattering and allowing the carbon fiber felt 55 to be used normally. Simultaneously, the nonwoven fabric has a porous structure, allowing air to circulate within the modified carbon nanofibers.

[0056] like Figure 5 As shown, optionally, when the support component 54 is provided with ventilation holes, the support component 54 is a corrugated support steel mesh, and the carbon fiber felt 55 is placed on the support component 54 in a corrugated form. Compared with the method of laying the carbon fiber felt 55 flat inside the second shell 56, when the carbon fiber felt 55 is placed on the support component 54 in a corrugated form, the carbon fiber felt 55 can cover a larger area. Under the same air volume, the increased coverage area of ​​the carbon fiber felt 55 will reduce the air velocity flowing through the second shell 56. After the air velocity is reduced, the time it takes to pass through the carbon fiber felt 55 of the same thickness will be longer (more than 10 seconds), giving the air more opportunities to come into contact with the modified nanofibers in the carbon fiber felt 55, thereby improving the adsorption and purification effect of the purification module 5 on toxic gases, viruses, bacteria, etc.

[0057] like Figures 8 to 11 As shown, optionally, the two sides of the supporting steel mesh are respectively provided with a horizontal insertion part 541 and an insertion block 542. The insertion block 542 is provided with an insertion groove 5421 that cooperates with the insertion part 541. Two adjacent supporting steel meshes are spliced ​​together through the insertion part 541 and the insertion block 542, thereby realizing the arrangement of carbon fiber felt 55 of different lengths to meet the air purification needs of different places.

[0058] like Figure 5 As shown, optionally, the inner wall of the second housing 56 is provided with a support plate 57 for supporting the support steel mesh, and the support steel mesh can be fixed to the support plate 57 by threaded connectors (such as screws). In order to fix the carbon fiber felt 55 to the support steel mesh, the non-woven fabric can be fixed to the support steel mesh by needle and thread sewing.

[0059] like Figures 12 to 16 As shown, optionally, when a first air duct 7 is formed between the support component 54 and the carbon fiber felt 55, the carbon fiber felt 55 is disposed in the second outer shell 56 in an inverted S-shape, and the carbon fiber felt 55 has spaced-apart lower recesses 10 and spaced-apart upper recesses 9, the upper recesses 9 and lower recesses 10 being arranged adjacent to each other; the support component 54 is placed in the lower recesses 10 and is used to support the carbon fiber felt 55, and a first air duct 7 is formed between the support component 54 and the carbon fiber felt 55, so that air can flow into the carbon fiber felt 55 through the first air duct 7, or can flow directly into the carbon fiber felt 55. Moreover, compared with the way the carbon fiber felt 55 is laid flat in the second outer shell 56, the carbon fiber felt 55 is disposed in the second outer shell 56 in an inverted S-shape, the laying area of ​​the carbon fiber felt 55 is increased several times, which reduces the air velocity passing through the carbon fiber felt 55, increases the reaction time between the air and the modified nano-carbon fiber 32 in the carbon fiber felt 55, thereby improving the adsorption and purification effect of the purification module 5 on toxic gases, viruses and bacteria.

[0060] In addition, when the support component 54 is placed in the recess 10 and forms a first air duct 7 with the carbon fiber felt 55, the air will be evenly distributed in different channels during the flow process, avoiding the problem of insufficient air purification caused by the airflow being concentrated in certain areas.

[0061] Optionally, the support component 54 is a vertically arranged first corrugated plate, the first corrugated plate having a wave-shaped cross-section in the horizontal direction. Using a corrugated plate as the support component 54 not only supports the carbon fiber felt 55, but also allows for the formation of a complex first air duct 7 between the corrugated plate and the carbon fiber felt 55.

[0062] like Figure 16As shown, optionally, a second corrugated plate 58 is vertically placed inside the upper recess 9 (both the first corrugated plate and the second corrugated plate 58 can be connected to the inner wall of the second outer shell 56 through threaded connectors); the cross section of the second corrugated plate 58 in the horizontal direction is wavy, and a second air duct 8 is formed between the second corrugated plate 58 and the carbon fiber felt 55. The crest of the second corrugated plate 58 corresponds to the crest of the first corrugated plate to jointly clamp the carbon fiber felt 55 so that the carbon fiber felt 55 can maintain an inverted S-shaped form and the carbon fiber felt 55 will not deform or wrinkle, thereby allowing the purified air to flow smoothly out of the carbon fiber felt 55.

[0063] The design of the second air duct 8 makes the airflow path more complex and tortuous, allowing for a longer contact time between the air and the modified carbon nanofibers.

[0064] like Figure 6 As shown, optionally, the pulse discharge mechanism 4 includes an insulating shell 41, a mesh electrode 42 disposed within the insulating shell 41, and a needle-shaped high-voltage electrode 43 disposed within the insulating shell 41. Specifically, the insulating shell 41 can be disposed close to the interior of the housing 1, and the bottom surface of the insulating shell 41 is provided with an air inlet 4111, and the top surface of the insulating shell 41 is provided with an air outlet 4121. The needle-shaped high-voltage electrode 43 is connected to the positive terminal of the high-voltage pulse power supply, and the needle tip of the needle-shaped high-voltage electrode 43 faces the upward mesh electrode 42; the mesh electrode 42 is connected to the negative terminal of the high-voltage pulse power supply.

[0065] When the needle-shaped high-voltage electrode 43 is connected to the high-voltage pulse power supply, the high-voltage pulse power supply releases high voltage to the needle-shaped high-voltage electrode 43 at a certain frequency. At this time, the needle tip of the needle-shaped high-voltage electrode 43 discharges to the mesh electrode 42, causing the air between the needle-shaped high-voltage electrode 43 and the mesh electrode 42 to ionize. The ionized air particles move directionally under the action of the electric field, forming an ion wind, which flows out through the air outlet 4121 under the continuous push of the airflow, and thus enters the purification module 5. This can eliminate the bacteria adsorbed on the modified activated carbon and modified carbon nanofibers, prevent the bacteria from desorbing from the purification module 5 and re-entering the air, causing secondary pollution, and at the same time, the adsorption performance and purification efficiency of the purification module 5 will not decrease.

[0066] It should be noted that this invention does not limit the number of needle-shaped high-voltage electrodes 43; there can be one or more. When multiple needle-shaped high-voltage electrodes 43 are provided, the discharge effect can be enhanced, thereby generating more ion wind, making it easier to eliminate bacteria adsorbed on modified activated carbon and modified carbon nanofibers.

[0067] like Figure 6As shown, optionally, both the air inlet 4111 and the air outlet 4121 are grille holes. The grille holes can increase the air inlet and outlet areas of the pulse discharge mechanism 4, thereby allowing more air to be ionized and used to eliminate bacteria adsorbed on the modified activated carbon and modified carbon nanofibers. At the same time, the grille holes can also play a certain filtering role, preventing large particulate impurities in the air from entering the insulating shell 41 and preventing impurities from causing wear, scratches, or short circuits to the needle-shaped high-voltage electrode 43, the mesh electrode 42, and the insulating material.

[0068] like Figure 6 As shown, optionally, the insulating shell 41 includes a shell body 411 and an air outlet grille 412 detachably disposed on the top of the shell body 411; the inner wall of the shell body 411 is provided with a plurality of L-shaped insulating support frames, and the mesh electrode 42 can be fixed on the L-shaped insulating support frames by means of threaded connectors.

[0069] like Figure 6 and Figure 7 As shown, optionally, the bottom of the outer shell 411 is vertically provided with a rod assembly, which includes two parallel insulating rods 414. The upper part of the insulating rods is provided with a U-shaped slot 4141, and the needle-shaped high-voltage electrode 43 is horizontally placed in the U-shaped slot 4141, so that the needle-shaped high-voltage electrode 43 is stably supported.

[0070] like Figure 1 and Figure 2 As shown, optionally, the first air outlet 301 of the air inlet fan 3 is connected to an air outlet shroud 6, which covers the air inlet hole 4111. By covering the air inlet hole 4111 with the air outlet shroud 6, other impurities at the bottom of the housing 1 can be prevented from entering the pulse discharge mechanism 4. In addition, the air outlet shroud 6 can guide the airflow blown out by the air inlet fan 3, making the airflow more concentrated and smoother into the air inlet hole 4111 of the pulse discharge mechanism 4, improving the efficiency and uniformity of airflow entry, thereby ensuring that more air can be fully ionized in the pulse discharge mechanism 4, enhancing the elimination effect of the ionized air on the bacteria in the purification module 5, and improving the purification efficiency and quality of the purifier.

[0071] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A circulating type toxic gas purifier comprising a casing (1) having an air inlet passage (2) formed on a bottom side thereof, and a fan (3) provided inside the casing (1) and connected to the air inlet passage (2), characterized in that, The air purifier also comprises a pulse discharge mechanism (4) and a purification module (5); the air inlet fan (3) has a first air outlet (301); the pulse discharge mechanism (4) is located above the first air outlet (301); the purification module (5) is located above the pulse discharge mechanism (4), and the purification module (5) is a modified activated carbon purification module or a modified nanometer carbon fiber purification module; the machine shell (1) is provided with a second air outlet (101), and the second air outlet (101) is located above the purification module (5).

2. The circulating-type toxic gas purifier according to claim 1, characterized by The modified activated carbon purification module comprises a first shell (51), a grid frame (52) horizontally arranged in the first shell (51), filter screens (53) arranged on the top surface and the bottom surface of the grid frame (52), and modified activated carbon filled in each frame of the grid frame (52). The bottom and the top of the first shell (51) are both provided with a first opening (511).

3. The circulating-type toxic gas purifier according to claim 1, characterized by The modified nanometer carbon fiber purification module comprises a second shell (56), a support assembly (54) arranged in the second shell (56) and connected with the inner wall of the second shell (56), and a carbon fiber felt (55) arranged on the support assembly (54); the bottom and the top of the second shell (56) are both provided with a second opening (561); the support assembly (54) has a ventilation hole or a first air duct (7) formed between the support assembly (54) and the carbon fiber felt (55).

4. The circulating-type toxic gas purifier according to claim 1, characterized by The pulse discharge mechanism (4) comprises an insulating shell (41), a mesh electrode (42) arranged in the insulating shell (41), and a needle-shaped high-voltage electrode (43) arranged in the insulating shell (41); the needle-shaped high-voltage electrode (43) is connected with the positive electrode end of a high-voltage pulse power supply, and the needle tip of the needle-shaped high-voltage electrode (43) faces the mesh electrode (42) upward; the mesh electrode (42) is connected with the negative electrode end of the high-voltage pulse power supply; the bottom surface of the insulating shell (41) is provided with an air inlet hole (4111), and the top surface of the insulating shell (41) is provided with an air outlet hole (4121).

5. The circulating-type toxic gas purifier according to claim 4, characterized by The air inlet hole (4111) and the air outlet hole (4121) are both grid holes.

6. The circulating-type toxic gas purifier according to claim 5, characterized by The insulating shell (41) comprises a shell main body (411) and an air outlet grid plate (412) detachably arranged on the top of the shell main body (411); the inner wall of the shell main body (411) is provided with an L-shaped insulating support frame (413), and the mesh electrode (42) is arranged on the L-shaped insulating support frame (413).

7. The circulating-type toxic gas purifier according to claim 6, characterized by The inner bottom of the shell main body (411) is vertically provided with a plug rod group, the plug rod group comprises two parallel arranged insulating plug rods (414), the upper part of the insulating plug rod (414) is provided with a U-shaped insertion slot (4141), and the needle-shaped high-voltage electrode (43) is horizontally placed in the U-shaped insertion slot (4141).

8. The circulating-type toxic gas purifier according to claim 4, characterized by The first air outlet (301) is connected with an air outlet cover (6), and the air outlet cover (6) covers the air inlet hole (4111).

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