Activated carbon fiber device for switching adsorption of formaldehyde

Abstract

This utility model discloses an activated carbon fiber device for switching formaldehyde adsorption, relating to the field of filtration equipment technology. It includes a filter cartridge housing, with a water inlet pipe connected to the upper end of the housing via a disassembly mechanism. The water inlet pipe branches to a first and a second sight glass, with a water distribution pipe connected to the lower ends of both. A spiral tube is fixed inside the water distribution pipe extending to the outer side of the filter cartridge housing. The potassium permanganate modified activated carbon fiber layer of this utility model converts adsorbed formaldehyde into carbon dioxide and water through strong oxidation, enhancing the stability of formaldehyde adsorption and avoiding secondary pollution caused by formaldehyde desorption in traditional activated carbon filters. Simultaneously, the addition of a polyester fiber nonwoven fabric layer further improves the uniformity of fluid distribution, and a protective steel wire mesh layer is provided on the outside of the potassium permanganate modified activated carbon fiber filter layer, enhancing the structural stability of the filter layer.

Description

Technical Field

[0001] This utility model relates to the field of filtration equipment technology, specifically to an activated carbon fiber device for switching formaldehyde adsorption. Background Technology

[0002] Activated carbon fiber filter cartridges, thanks to the high specific surface area and abundant functional groups of activated carbon fiber materials, exhibit superior performance in the treatment of solid-liquid-gas three-phase pollutants. They can simultaneously trap solid particulate matter and adsorb complex components such as volatile organic compounds, acid and alkaline gases, radioactive substances, liquid organic pollutants, heavy metal ions, residual chlorine, and microorganisms. This filter cartridge uses a composite yarn of textile fiber substrate and activated carbon fiber as raw material. Through multi-axis winding technology, a porosity gradient structure (45% on the outer layer decreasing to 18% inwards) is constructed on a porous stainless steel skeleton, forming a synergistic mechanism of mechanical trapping and chemical adsorption. It is particularly suitable for the deep purification of fluids with low viscosity and low solid content.

[0003] In the prior art, the distribution of fluid in the water distribution pipe may not be uniform, leading to local scouring damage to the filter layer, affecting the filtration effect. In addition, the protective structure of the filter layer may not be perfect, and structural damage is prone to occur under high pressure conditions, affecting the service life of the equipment. Therefore, this utility model provides an activated carbon fiber device for switching formaldehyde adsorption. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides an activated carbon fiber device for switching formaldehyde adsorption, which solves the problems of uneven fluid distribution in the water distribution pipe, leading to localized scouring damage to the filter layer and affecting the filtration effect, and the imperfect protective structure of the filter layer, which is prone to structural damage under high pressure conditions, affecting the service life of the equipment.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an activated carbon fiber device for switching formaldehyde adsorption, comprising a filter cartridge shell, an inlet pipe connected to the upper end of the filter cartridge shell via a disassembly mechanism, a first sight glass and a second sight glass branching off from the filter cartridge shell, a water distribution pipe connected to the lower ends of the first and second sight glasses, a spiral tube fixed inside the water distribution pipe extending to the outer side of the filter cartridge shell, a plurality of water outlet holes on the inner wall of the water distribution pipe, a polyester fiber nonwoven fabric layer on the outer side of the water outlet holes, a potassium permanganate modified activated carbon fiber filter layer on the outer side of the polyester fiber nonwoven fabric layer, and a protective steel wire mesh layer on the outer side of the potassium permanganate modified activated carbon fiber filter layer.

[0006] Preferably, the filter cartridge housing is made of stainless steel, the water distribution pipe is made of stainless steel, and the surface of the water distribution pipe is provided with a circular hole with a diameter of 8 mm.

[0007] Preferably, the steel wire mesh is provided with mounting grooves at the top and bottom, and a fastening rubber ring is provided in the mounting groove.

[0008] Preferably, the bottom of the filter element housing is provided with a first air outlet, the first air outlet is connected to a first valve and a second valve, and a second air outlet is provided at the control connection between the first valve and the second valve.

[0009] Preferably, the first water inlet at the bottom of the water distribution pipe is in an open state, and a second water inlet for potassium permanganate solution is provided at one end of the first water inlet. The first water inlet and the second water inlet for potassium permanganate solution are controlled by a third valve and a fourth valve. The first water inlet pipe is detachable, and a rubber pad is provided on the outside of the first water inlet for connection.

[0010] Preferably, the disassembly mechanism includes a mounting base made of iron material fixed to the top of the filter element housing, a magnetic ring fixed to the outer wall of the connection between the water inlet pipe and the filter element housing, a first slot on the outer wall of the mounting base, a second slot on the outer wall of the water inlet pipe above the magnetic ring, a locking seat fitted to the mounting base and the outer wall of the water inlet pipe, and a second locking bolt and a first locking bolt respectively engaged with the first slot and the second slot inside the locking seat, and the locking seat is configured as two sets for locking by bolts.

[0011] Beneficial effects

[0012] This invention provides an activated carbon fiber device for switching formaldehyde adsorption. Compared with the prior art, it has the following advantages:

[0013] Firstly, the potassium permanganate modified activated carbon fiber layer of this invention converts adsorbed formaldehyde into carbon dioxide and water through strong oxidation, which not only enhances the stability of formaldehyde adsorption but also avoids the secondary pollution problem caused by formaldehyde desorption in traditional activated carbon filter cartridges. At the same time, the addition of a polyester fiber nonwoven fabric layer further improves the uniformity of fluid distribution, and the addition of a protective steel wire mesh layer on the outside of the potassium permanganate modified activated carbon fiber filter layer enhances the structural stability of the filter layer.

[0014] Secondly, this utility model has a spiral tube fixed inside the end of the water distribution pipe that extends to the outside of the filter element shell. The spiral can generate centrifugal force to make the water flow spread evenly along the pipe wall, increase the residence time of the fluid in the water distribution pipe, reduce the local high pressure zone near the water outlet, further improve the fluid distribution uniformity of the polyester fiber nonwoven fabric layer, avoid local scouring damage to the fiber layer, and thus make the filtration effect more stable and efficient. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the fastening rubber ring structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the disassembly mechanism of this utility model;

[0018] Figure 4 This is a schematic diagram of the bolted pipe structure of this utility model.

[0019] In the diagram: 1. Inlet pipe; 2. Distribution pipe; 201. Spiral pipe; 3. Outlet hole; 4. Polyester fiber non-woven fabric layer; 5. Potassium permanganate modified activated carbon fiber filter layer; 6. Steel wire mesh; 7. Mounting groove; 8. First air outlet; 9. First water inlet; 10. Fastening rubber ring; 11. Filter element housing; 12. First sight glass; 13. Second sight glass; 14. First valve; 15. Second valve; 16. Third valve; 17. Fourth valve; 18. Second water inlet; 19. Second air outlet; 20. Rubber pad; 21. Disassembly mechanism; 2101. Mounting base; 2102. Magnet ring; 2103. First slot; 2104. Second slot; 2105. Locking seat; 2106. First locking bolt; 2107. Second locking bolt. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-4 This utility model provides a technical solution: an activated carbon fiber device for switching formaldehyde adsorption, including a filter element shell 11. The upper end of the filter element shell 11 is provided with a water inlet pipe 1 connected by a disassembly mechanism 21. The water inlet pipe 1 is branched and connected with a first sight mirror 12 and a second sight mirror 13. The lower ends of the first sight mirror 12 and the second sight mirror 13 are connected to a water distribution pipe 2. The water distribution pipe 2 extends to the outer side of the filter element shell 11 and has a spiral tube 201 fixed inside. The inner wall of the water distribution pipe 2 is provided with a plurality of water outlet holes 3. The outer side of the water outlet holes 3 is provided with a polyester fiber non-woven fabric layer 4. The outer side of the polyester fiber non-woven fabric layer 4 is provided with a potassium permanganate modified activated carbon fiber filter layer 5. The outer side of the potassium permanganate modified activated carbon fiber filter layer 5 is provided with a protective layer of steel wire mesh 6.

[0022] The fluid to be treated flows in from the inlet pipe 1 and enters the equipment through the disassembly mechanism 21. The fluid splits into two streams at the fork of the inlet pipe 1. The flow rate and status are observed through the first sight glass 12 and the second sight glass 13, respectively. After the two streams merge, they enter the water distribution pipe 2 and flow out evenly through the water outlet 3 on the inner wall of the water distribution pipe 2. The outflowing fluid passes through the polyester fiber non-woven fabric layer 4, the potassium permanganate modified activated carbon fiber filter layer 5, and the protective steel wire mesh layer 6 in sequence to complete the adsorption and filtration of formaldehyde. The treated gas is discharged from the air outlet 8 at the bottom of the filter element shell 11.

[0023] Potassium permanganate modified activated carbon fiber essentially utilizes the strong oxidizing properties of potassium permanganate, which reacts with formaldehyde to produce carbon dioxide and water, thereby enhancing the adsorption capacity and stability of formaldehyde.

[0024] The flow rate and status of the fluid can be observed in real time through the first sight glass 12 and the second sight glass 13, which facilitates the monitoring and adjustment of the equipment operation. Then, the water distribution pipe 2 extends to the spiral tube 201 fixed inside the outer end of the filter element shell 11, which can increase the residence time of the fluid in the water distribution pipe and make the fluid distribution more uniform. The centrifugal force generated by the spiral flow guide makes the water flow spread evenly along the pipe wall, reducing the local high pressure zone near the water outlet 3, further improving the uniformity of fluid distribution in the polyester fiber non-woven fabric layer 4, and avoiding local scouring damage to the fiber layer. At the same time, the design of the multi-layer filter structure of polyester fiber non-woven fabric layer 4, potassium permanganate modified activated carbon fiber filter layer 5, and protective steel wire mesh 6 can effectively adsorb and filter pollutants such as formaldehyde, improving the purification efficiency.

[0025] In a preferred embodiment, the filter cartridge housing 11 is made of stainless steel, and the water distribution pipe 2 is also made of stainless steel. The surface of the water distribution pipe 2 is provided with a circular hole with a diameter of 8 mm. After the fluid enters the water distribution pipe 2, it flows out evenly through the circular hole with a diameter of 8 mm. The outflowing fluid is purified by passing through each filter layer. The filter cartridge housing 11 and the water distribution pipe 2 are made of stainless steel, which has the characteristics of corrosion resistance and high strength, and can extend the service life of the equipment. The circular hole design with a diameter of 8 mm on the surface of the water distribution pipe 2 can make the fluid flow out evenly and ensure the consistency of the filtration effect.

[0026] In a preferred embodiment, the wire mesh 6 is provided with mounting grooves 7 on the top and bottom, and a fastening rubber ring 10 is provided in the mounting grooves 7. The protective layer wire mesh 6 is fixed in the filter element housing 11 by the mounting grooves 7 and the fastening rubber ring 10. During the operation of the equipment, the fastening rubber ring 10 can ensure the sealing performance of the wire mesh 6 and prevent fluid leakage.

[0027] By installing the groove 7 and fastening rubber ring 10, the wire mesh 6 can be firmly installed inside the filter element housing 11, enhancing the structural stability of the equipment. The fastening rubber ring 10 can play a sealing role, preventing fluid leakage and ensuring the normal operation of the equipment.

[0028] In a preferred embodiment, the bottom of the filter element housing 11 is provided with a first air outlet 8, which is connected to a first valve 14 and a second valve 15. A second air outlet 19 is provided at the control connection between the first valve 14 and the second valve 15. The treated gas is discharged from the first air outlet 8 at the bottom of the filter element housing 11. During the discharge process, the flow rate and on / off state of the gas are controlled by the first valve 14 and the second valve 15. The second air outlet 19 at the control connection between the first valve 14 and the second valve 15 can discharge excess gas during valve control. The arrangement of the first valve 14 and the second valve 15 allows for flexible control of the gas discharge flow rate and on / off state, facilitating equipment operation and adjustment. The second air outlet 19 ensures the normal operation of the valve by discharging excess gas during valve control.

[0029] In a preferred embodiment, the first inlet 9 at the bottom of the water distribution pipe 2 is open. A second inlet 18 for potassium permanganate solution is located at one end of the first inlet 9. The connection between the first inlet 9 and the second inlet 18 is controlled by a third valve 16 and a fourth valve 17. The first inlet 9 is detachable, and a rubber pad 20 is provided on its outer side. When filter element regeneration is required, the third valve 16 and the fourth valve 17 are opened, allowing the potassium permanganate solution to enter the first inlet 9 from the second inlet 18. The water outlet holes 3 of the water distribution pipe 2 are evenly distributed to each filter layer to regenerate the potassium permanganate modified activated carbon fiber filter layer 5. After regeneration, the third valve 16 and the fourth valve 17 are closed. The detachable first inlet pipe 9 facilitates maintenance and replacement. The inflow of potassium permanganate solution can be controlled by the setting of the third valve 16 and the fourth valve 17 to achieve in-situ chemical regeneration of the filter element without disassembling the filter element. The operation is convenient. The detachable first inlet pipe 9 and the rubber gasket 20 connection design facilitate the maintenance and replacement of the inlet pipe and improve the maintainability of the equipment.

[0030] In a preferred embodiment, the disassembly mechanism 21 includes a mounting base 2101 made of iron material fixed to the top of the filter cartridge housing 11. A magnetic ring 2102 is fixed to the outer wall of the connection between the water inlet pipe 1 and the filter cartridge housing 11. A first slot 2103 is provided on the outer wall of the mounting base 2101, and a second slot 2104 is provided on the outer wall of the water inlet pipe 1 above the magnetic ring 2102. A locking seat 2105 is fitted between the mounting base 2101 and the outer wall of the water inlet pipe 1. A second locking bolt 2107 and a first locking bolt 2106 are respectively provided inside the locking seat 2105 to engage with the first slot 2103 and the second slot 2104. The locking seat 2105 is configured as two sets that are locked by bolts. During installation, the water inlet pipe is connected to the filter cartridge housing 11. The magnetic ring 2102 of pipe 1 is aligned with the mounting base 2101 on the top of the filter element housing 11 and initially fixed by the attraction of the magnet. The locking seat 2105 is then placed on the mounting base 2101 and the outer wall of the water inlet pipe 1, so that the first locking bolt 2106 and the second locking bolt 2107 are respectively engaged in the second slot 2104 and the first slot 2103. The two sets of locking seats 2105 are locked by bolts, thus completing the connection between the water inlet pipe 1 and the filter element housing 11. When disassembling, the bolts are loosened and the locking seat 2105 is removed to separate the water inlet pipe 1 from the filter element housing 11. The disassembly mechanism 21 adopts a combination design of magnetic ring 2102 and locking seat 2105, which makes installation and disassembly convenient and quick, and can improve the maintenance efficiency of the equipment.

[0031] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0032] During operation, the fluid to be treated flows in from the inlet pipe 1, enters the equipment through the disassembly mechanism 21, and splits into two paths at the fork of the inlet pipe 1. After observing the flow rate and status through the first sight mirror 12 and the second sight mirror 13, the two paths merge and enter the distribution pipe 2. The fluid flows out evenly through the outlet hole 3 on the inner wall of the distribution pipe 2, and passes sequentially through the polyester fiber non-woven fabric layer 4, the potassium permanganate modified activated carbon fiber filter layer 5, and the protective steel wire mesh 6 outside the outlet hole 3, thus completing the adsorption and filtration of formaldehyde. The treated gas is discharged from the air outlet 8 at the bottom of the filter element shell 11. The spiral tube 201 extending from the outer end of the distribution pipe 2 to the inner side of the filter element shell 11 generates centrifugal force through spiral flow guidance, increasing the residence time of the fluid in the distribution pipe, making the fluid diffuse evenly along the pipe wall, reducing the local high pressure zone near the outlet hole 3, improving the fluid distribution uniformity of the polyester fiber non-woven fabric layer 4, and avoiding local erosion damage to the fiber layer.

[0033] When filter element regeneration is required, open the third valve 16 and the fourth valve 17 between the first inlet 9 at the bottom of the water distribution pipe 2 and the second inlet 18 of the potassium permanganate solution. This allows the potassium permanganate solution to enter the first inlet 9 from the second inlet 18 and be evenly distributed to each filter layer through the outlet 3 of the water distribution pipe 2, regenerating the potassium permanganate modified activated carbon fiber filter layer 5. After regeneration, close the valves. The detachable first inlet 9 pipe is connected via rubber gaskets 20 for easy maintenance and replacement. The filter element housing 11 and the water distribution pipe 2 are made of stainless steel. The 8mm diameter holes on the surface of the water distribution pipe 2 ensure even fluid flow. The protective steel wire mesh 6 is secured by fastening rubber rings within the upper and lower mounting grooves 7. 10 is fixed inside the filter element housing 11 to ensure sealing performance. The first valve 14 and the second valve 15 connected to the first air outlet 8 at the bottom of the filter element housing 11 can control the gas discharge flow and on / off. The second air outlet 19 at the control connection between the two can discharge excess gas during the valve control process. The disassembly mechanism 21 is initially fixed by the magnetic force of the iron mounting base 2101 on the top of the filter element housing 11 and the magnetic ring 2102 on the outer wall of the water inlet pipe 1. Then, the first locking bolt 2106 and the second locking bolt 2107 in the locking seat 2105 are engaged with the second slot 2104 on the outer wall of the water inlet pipe 1 and the first slot 2103 on the outer wall of the mounting base 2101, respectively, and bolts are used to lock them, so as to realize the convenient installation and disassembly of the water inlet pipe 1 and the filter element housing 11.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An activated carbon fiber device for switching formaldehyde adsorption, comprising a filter cartridge housing (11), characterized in that: The upper end of the filter element housing (11) is provided with a water inlet pipe (1) connected by a disassembly mechanism (21). The water inlet pipe (1) is bifurcated and connected with a first sight glass (12) and a second sight glass (13). The lower ends of the first sight glass (12) and the second sight glass (13) are connected to a water distribution pipe (2). The water distribution pipe (2) extends to the outer side of the filter element housing (11) and is fixed with a spiral tube (201). The inner wall of the water distribution pipe (2) is provided with several water outlet holes (3). The outer side of the water outlet holes (3) is provided with a polyester fiber non-woven fabric layer (4). The outer side of the polyester fiber non-woven fabric layer (4) is provided with a potassium permanganate modified activated carbon fiber filter layer (5). The outer side of the potassium permanganate modified activated carbon fiber filter layer (5) is provided with a protective layer of steel wire mesh (6).

2. The activated carbon fiber device for switching formaldehyde adsorption according to claim 1, characterized in that: The filter housing (11) is made of stainless steel, the water distribution pipe (2) is made of stainless steel, and the surface of the water distribution pipe (2) is provided with a round hole with a diameter of 8 mm.

3. The activated carbon fiber device for switching formaldehyde adsorption according to claim 1, characterized in that: The wire mesh (6) is provided with mounting grooves (7) on the top and bottom, and a fastening rubber ring (10) is provided in the mounting groove (7).

4. The activated carbon fiber device for switching formaldehyde adsorption according to claim 1, characterized in that: The filter housing (11) has a first air outlet (8) at the bottom. The first air outlet (8) is connected to a first valve (14) and a second valve (15), and a second air outlet (19) is provided at the control connection between the first valve (14) and the second valve (15).

5. The activated carbon fiber device for switching formaldehyde adsorption according to claim 1, characterized in that: The first inlet (9) at the bottom of the water distribution pipe (2) is in an open state. A second inlet (18) for potassium permanganate solution is provided at one end of the first inlet (9). The first inlet (9) and the second inlet (18) for potassium permanganate solution are controlled by a third valve (16) and a fourth valve (17). The pipe of the first inlet (9) is detachable. A rubber pad (20) is provided on the outside of the first inlet (9) for connection.

6. The activated carbon fiber device for switching formaldehyde adsorption according to claim 1, characterized in that: The disassembly mechanism (21) includes a mounting base (2101) made of iron material fixed to the top of the filter element housing (11). A magnetic ring (2102) is fixed to the outer wall of the connection between the water inlet pipe (1) and the filter element housing (11). A first slot (2103) is opened on the outer wall of the mounting base (2101). A second slot (2104) is opened on the outer wall of the water inlet pipe (1) above the magnetic ring (2102). A locking seat (2105) is attached to the outer wall of the mounting base (2101) and the water inlet pipe (1). A second locking bolt (2107) and a first locking bolt (2106) are opened inside the locking seat (2105) respectively, which are engaged with the first slot (2103) and the second slot (2104). The locking seat (2105) is configured as two sets that are locked by bolts.

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