Automatic replacement mechanism of activated carbon adsorption net of air purifier

Abstract

This invention discloses an automatic activated carbon adsorption filter replacement mechanism for an air purifier, comprising a filter housing and a filter screen. The filter housing has a strip-shaped groove inside, and air inlets and outlets are fixedly installed on both sides of the filter housing. Side storage boxes communicating with the filter housing are fixedly installed on both sides of the filter housing, and the side storage boxes contain a translational automatic replacement unit for automatically moving and replacing the filter screen. This invention effectively solves the technical problems of existing air purifiers where manual replacement of activated carbon filters requires machine downtime, and untimely replacement can easily lead to purification failure. Through a drive motor and a gear and rack transmission structure, the filter screen can be precisely driven to move the frame, achieving fully automatic alignment and replacement of the filter screen. The entire process requires no manual disassembly or assembly, and does not interrupt the equipment's purification operation, ensuring continuous purification operation in industrial settings.

Description

Technical Field

[0001] This invention relates to the field of air purifier technology, and in particular to an automatic replacement mechanism for the activated carbon adsorption screen of an air purifier. Background Technology

[0002] Activated carbon adsorption meshes in air purifiers are typically used as the core filtration unit for removing gaseous pollutants such as formaldehyde, volatile organic compounds (VOCs), and odors. Current activated carbon adsorption meshes mostly consist of granular activated carbon or activated carbon fiber felt filled within a plastic or metal mesh frame, forming a flat or cylindrical structure, and are fixedly installed in the purifier's filter layer. Box-type air purifiers are widely used to remove VOCs, odors, and other gaseous pollutants generated in production workshops, painting workshops, chemical industrial parks, and other similar locations. Activated carbon adsorption meshes, as the core filtration component of these purifiers, are typically made of granular activated carbon... Carbon or activated carbon fiber felt is used as the adsorption medium and is encapsulated in a stainless steel or plastic frame with a multi-layer mesh structure. It is installed in the purifier box via slots or guide rails. During operation, the activated carbon adsorption mesh uses its rich microporous structure to physically or chemically adsorb harmful components in the exhaust gas, thereby effectively intercepting and purifying gaseous pollutants. This type of adsorption mesh has various structural forms, commonly including flat plate, folded and cylindrical types. It can be selected and combined according to the processing air volume and pollutant concentration to meet the continuous purification needs of different industrial scenarios.

[0003] However, activated carbon adsorption nets gradually reach adsorption saturation during use, at which point their adsorption capacity decreases significantly, necessitating replacement to maintain purification efficiency. Under current technological conditions, replacing activated carbon adsorption nets mainly relies on manual periodic operations: maintenance personnel need to first stop the machine and open the purifier housing, remove the saturated adsorption nets one by one, and then install new adsorption nets. The entire process is time-consuming and requires interruption of production or purification operations. More importantly, if the saturated adsorption nets are not detected and replaced in time, the adsorbed pollutants may desorb or penetrate, leading to a sharp decrease in purification efficiency, and even causing the pollutant concentration at the purifier outlet to be higher than the inlet concentration, seriously affecting the air purification quality and environmental safety of industrial sites. Although some purifiers are now equipped with differential pressure gauges or concentration sensors to indicate adsorption saturation, these solutions can only issue alarm signals, and the final replacement action still needs to be performed manually. There is a lack of a mechanism that can automatically detect adsorption saturation and automatically perform adsorption net replacement.

[0004] Therefore, how to provide an automatic replacement mechanism for the activated carbon adsorption screen of an air purifier is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] One object of the present invention is to provide an automatic replacement mechanism for the activated carbon adsorption screen of an air purifier, which solves the problems mentioned in the background art.

[0006] An automatic activated carbon adsorption screen replacement mechanism for an air purifier according to an embodiment of the present invention includes a filter box and a filter screen plate. The filter box has a strip-shaped groove inside, and air inlets and outlets are fixedly installed on both sides of the filter box. Side storage boxes communicating with the filter box are fixedly installed on both sides of the filter box. The side storage boxes are provided with a translation automatic replacement unit for automatically moving and replacing the filter screen plate. The filter screen plate is movably engaged with the translation automatic replacement unit from bottom to top.

[0007] The automatic translation replacement unit includes a drive motor, a drive gear, a drive rod, and a screen drive frame. The drive motor is fixedly installed at the bottom of the filter box, and the drive gear is fixedly installed at the output shaft end of the drive motor. The screen drive frame is movably installed inside the filter box and the side storage box and moves along the strip groove. One end of the drive rod is fixedly installed on one side of the screen drive frame, and the other end of the drive rod passes through the side storage box on one side and extends to the side storage box on the other side. After passing through the side storage box, it is fixedly connected to the other side of the screen drive frame. A row of toothed grooves is opened on the surface of the drive rod, and the drive gear and the drive rod mesh with each other.

[0008] The drive rod is located on the surface of the drive motor near its lower part, and a guide seat is fixedly installed on the surface of the filter box, with the guide seat movably sleeved on the surface of the drive rod.

[0009] The filter screen drive frame includes push side plates, inner positioning grooves, and top fixing rods. There are three sets of push side plates and two sets of top fixing rods. The three sets of push side plates are arranged in a linear array. The two sets of top fixing rods are fixedly installed on the top of the three sets of push side plates. The inner positioning groove is opened on the opposite side of the three sets of push side plates. The filter screen is movably engaged inside the inner positioning groove.

[0010] A rubber positioning clip for positioning the filter screen is fixedly installed at the bottom of the inner wall of the inner positioning groove.

[0011] A guide rod is fixedly installed on the side of the push side plate closest to the outermost of the three sets of push side plates. The other end of the guide rod passes through the side storage box and extends to the outside of the side storage box.

[0012] A dust collection box is fixedly installed at the bottom of the side storage box, and an opening and closing door is rotatably installed on one side of the dust collection box.

[0013] A top cleaning box is fixedly installed on the top of the side storage box, and a cleaning component that moves up and down to clean the surface of the filter screen is fixedly installed on the top cleaning box.

[0014] The cleaning assembly includes a cleaning motor, a drive screw, a movable frame, a suspension rod, a damping wheel, and a rotating cleaning roller. The cleaning motor is fixedly installed on the top of the top cleaning box. The drive screw is rotatably installed inside the top cleaning box in a vertical configuration, with its top end extending above the top cleaning box and fixedly connected to the output shaft of the cleaning motor. The movable frame is movably installed inside the top cleaning box and threaded onto the surface of the drive screw. The suspension rod is fixedly installed at the bottom of the movable frame, and the damping wheel is rotatably installed on the inner side of the suspension rod. The inner side of the damping wheel is fixedly connected to the end face of the rotating cleaning roller. When the suspension rod and the damping wheel descend, they contact and connect with the surface of the filter screen, and the suspension rod is tightly abutted against the surface of the filter screen. As the suspension rod moves downward and contacts the surface of the filter screen, its rotation drives the damping wheel to rotate synchronously.

[0015] The beneficial effects of this invention are:

[0016] This invention effectively solves the technical problems of existing air purifiers' activated carbon filter replacement relying on manual operation requiring machine downtime and untimely replacement easily leading to purification failure by integrating the automatic translation replacement unit, dual-side storage boxes and cleaning components. Through the integrated linkage design of the automatic translation replacement unit, dual-side storage boxes and cleaning components, the invention can accurately drive the filter plate to move the frame, realize the fully automatic alignment and replacement of the filter plate, and eliminate the need for manual disassembly and assembly operations throughout the process. It does not interrupt the equipment's purification operation and ensures continuous purification operation in industrial scenarios.

[0017] The cleaning unit in the top cleaning box can automatically clean and remove dust and impurities from idle filter screens, effectively removing dust blockages on the filter screen surface, restoring the filter screen's permeability, and extending its service life. The alternating storage and replacement structure on both sides completely avoids the problems of downtime and purification interruption caused by traditional filter screen replacement. This device can autonomously distinguish between two fault states: filter screen dust blockage and adsorption saturation, and perform targeted cleaning or replacement operations, significantly reducing filter screen consumable consumption and the frequency of manual maintenance. It is energy-efficient and suitable for various harsh industrial purification scenarios such as chemical and spraying industries. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of an automatic activated carbon adsorption mesh replacement mechanism for an air purifier proposed in this invention.

[0020] Figure 2 This is a schematic diagram of the other side of the overall three-dimensional structure of the automatic replacement mechanism for the activated carbon adsorption mesh in an air purifier proposed in this invention.

[0021] Figure 3This is a three-dimensional cross-sectional view of the filter box and side storage box in the automatic activated carbon adsorption mesh replacement mechanism of an air purifier proposed in this invention.

[0022] Figure 4 This is a three-dimensional structural diagram of the filter box in the automatic replacement mechanism of the activated carbon adsorption screen of an air purifier proposed in this invention.

[0023] Figure 5 This is a three-dimensional structural diagram of the translational automatic replacement unit in the automatic replacement mechanism of the activated carbon adsorption mesh of an air purifier proposed in this invention.

[0024] Figure 6 This is a three-dimensional structural diagram of the automatic replacement unit in the disassembled state of the automatic replacement mechanism for the activated carbon adsorption mesh of an air purifier proposed in this invention.

[0025] Figure 7 This is a three-dimensional structural diagram of the cleaning component in the automatic replacement mechanism of the activated carbon adsorption screen of an air purifier proposed in this invention.

[0026] Figure 8 The present invention provides an automatic activated carbon adsorption mesh replacement mechanism for an air purifier. Figure 6 A magnified structural diagram of point A in the middle.

[0027] The attached diagram shows: 1. Filter box; 2. Air inlet and outlet; 3. Side storage box; 4. Automatic shifting replacement unit; 5. Filter screen; 6. Strip groove; 7. Built-in sealing strip; 8. Drive motor; 9. Drive gear; 10. Drive rod; 11. Linked toothed groove; 12. Guide seat; 13. Push side plate; 14. Inner positioning groove; 15. Rubber positioning clip; 16. Guide rod; 17. Dust collection box; 18. Opening and closing door; 19. Top cleaning box; 20. Cleaning motor; 21. Drive screw; 22. Movable frame; 23. Hanging rod; 24. Damping wheel; 25. Rotary cleaning roller; 26. Top fixed connecting rod; 27. Cleaning assembly. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0029] Example 1

[0030] refer to Figures 1-8In this embodiment, a filter housing 1 and a filter screen 5 are included. A strip-shaped groove 6 is provided inside the filter housing 1. Air inlets and outlets 2 are fixedly installed on both sides of the filter housing 1. Side storage boxes 3, communicating with the filter housing 1, are fixedly installed on both sides of the filter housing 1. An automatic translation replacement unit 4 for automatically moving and replacing the filter screen 5 is provided inside the side storage box 3. The filter screen 5 is movably engaged with the automatic translation replacement unit 4 from bottom to top. The automatic translation replacement unit 4 includes a drive motor 8, a drive gear 9, a drive rod 10, and a screen drive frame. The drive motor 8 is fixedly installed... At the bottom of the filter housing 1, the drive gear 9 is fixedly installed at the output shaft end of the drive motor 8. The screen drive frame is movably installed inside the filter housing 1 and the side storage box 3 and moves along the strip groove 6. One end of the drive rod 10 is fixedly installed on one side of the screen drive frame. The other end of the drive rod 10 passes through the side storage box 3 on one side and extends to the other side storage box 3. After passing through the side storage box 3, it is fixedly connected to the other side of the screen drive frame. The row of toothed grooves 11 is opened on the surface of the drive rod 10. The drive gear 9 and the drive rod 10 mesh with each other.

[0031] In practice, the drive motor 8, drive gear 9, and drive rod 10 with connected toothed grooves 11 form a stable gear and rack transmission structure with high transmission accuracy and smooth power output. The strip groove 6 can accurately limit and guide the translational movement of the screen drive frame, effectively preventing the filter from shifting or getting stuck during the movement of the filter. The side storage boxes 3, which are symmetrically arranged on both sides, are connected to the filter box 1 and can store spare filters and filters to be replaced respectively, providing structural support for fully automatic alternating replacement. The overall structure is compact and adaptable to the installation structure of industrial air purifier boxes, ensuring that filter replacement and air purification operations are carried out simultaneously without interference.

[0032] Example 2

[0033] refer to Figures 1-8 In this embodiment, the driving rod 10 is located on the surface of the drive motor 8 near its lower part, and a guide seat 12 is fixedly installed on the surface of the filter box 1. The guide seat 12 is movably sleeved on the surface of the driving rod 10.

[0034] In practice, the drive rod 10 is positioned below the drive motor 8, which effectively prevents dust from falling and affecting its normal operation. This ensures stable meshing force between the drive gear 9 and the row of toothed grooves 11. Furthermore, the drive rod 10 is stably guided by the guide seat 12, preventing problems such as gear tooth loss, rod deformation, and transmission jamming that may occur during long-term operation. This significantly improves the stability and service life of the transmission structure. At the same time, this layout makes full use of the unused space at the bottom of the filter box 1, optimizes the internal structure layout, avoids interference between the transmission components and the filter structure, and ensures smooth operation of the equipment.

[0035] Example 3

[0036] refer to Figures 1-8 In this embodiment, the mesh plate drive frame includes a push side plate 13, an inner positioning groove 14, and a top fixing link 26. There are three sets of push side plates 13 and two sets of top fixing links 26. The three sets of push side plates 13 are arranged in a linear array. The two sets of top fixing links 26 are fixedly installed on the top of the three sets of push side plates 13. The inner positioning groove 14 is opened on the opposite side of the three sets of push side plates 13. The filter mesh plate 5 is movably engaged inside the inner positioning groove 14. A rubber positioning clip 15 for positioning the filter mesh plate 5 is fixedly installed at the bottom of the inner wall of the inner positioning groove 14.

[0037] In practice, the three sets of linear array push side plates 13, together with the two sets of top fixing rods 26, are spliced ​​into an integrated screen plate drive frame. The overall structure is rigid and has uniform load-bearing capacity, which can stably clamp the filter screen plate 5 and move it synchronously. The inner positioning groove 14 opened on the opposite side can limit and store the filter screen plate 5 in all directions. The rubber positioning card 15 at the bottom of the groove has the functions of elastic buffering and anti-slip positioning, which can firmly fix the filter screen and effectively prevent the filter screen from loosening, falling off, or shifting during the filter screen replacement process, ensuring the accuracy of filter screen alignment and replacement and improving the reliability of equipment operation.

[0038] Example 4

[0039] refer to Figures 1-8 In this embodiment, a guide rod 16 is fixedly installed on the side of the push side plate 13 closest to the outermost of the three sets of push side plates 13. The other end of the guide rod 16 passes through the side storage box 3 and extends to the outside of the side storage box 3.

[0040] In practice, the guide rod 16 connected to the outer push side plate 13 extends through the side storage box 3 to the outside, forming a double guide and limiting structure with the strip groove 6. This further improves the straightness of the screen plate driving the frame to move horizontally, completely eliminating the problems of screen movement jamming and deviation. At the same time, the guide rod 16 can share the transmission tension of the drive rod 10, reduce the operating load of the rod and gear, reduce component wear, effectively extend the overall service life of the horizontal automatic replacement unit 4, and ensure long-term stable operation.

[0041] Example 5

[0042] refer to Figures 1-8 In this embodiment, a dust collection box 17 is fixedly installed at the bottom of the side storage box 3, and an opening and closing door 18 is rotatably installed on one side of the dust collection box 17.

[0043] In practice, the dust collection box 17 integrated at the bottom of the side storage box 3 can centrally collect the dust and impurities that the cleaning components 27 have dropped, preventing impurities from scattering and accumulating inside the equipment, thus preventing secondary air pollution and ensuring the cleanliness of the equipment. The rotatable opening and closing door 18 has a simple structure and is easy to operate. Staff can directly open the opening and closing door 18 to clean the accumulated dust without disassembling the entire machine structure, which greatly reduces the difficulty of daily maintenance and operation and maintenance costs of the equipment and improves the practicality of the equipment.

[0044] Example 6

[0045] refer to Figures 1-8 In this embodiment, a top cleaning box 19 is fixedly installed on the top of the side storage box 3. A cleaning component 27 that moves up and down to clean the surface of the filter screen 5 is fixedly installed on the top cleaning box 19. Here, the number of top cleaning boxes 19 and cleaning components 27 is the same as the number of side storage boxes 3, both being two sets. When one set of filter screens 5 is located inside the filter box 1, the other set of filter screens 5 is located inside one set of side storage boxes 3. At this time, component 27 moves to clean the surface of the filter screen 5. The cleaned filter screen 5 can still be used. This is suitable for situations where the surface is clogged (5). A pressure detector is needed for monitoring. If the pressure reaches a threshold, the automatic replacement unit 4 is activated to move and automatically replace the filter screen 5 inside the filter housing 1. Once the filter screen 5 inside the filter housing 1 is saturated, the automatic replacement unit 4 moves the cleaned filter screen 5 back into the filter housing 1. The original filter screen 5 inside the filter housing 1 then moves with the automatic replacement unit 4 to another set of side storage boxes 3. If the filter screen 5 is still saturated after cleaning... If that doesn't work, then it's necessary to open 18 pairs of dust filters, clean them, and then manually replace the filter screen 5 by removing it from the opening below the side storage box 3. This allows for replacement without stopping the machine. The cleaning assembly 27 includes a cleaning motor 20, a drive screw 21, a movable frame 22, a hanging rod 23, a damping wheel 24, and a rotating cleaning roller 25. The cleaning motor 20 is fixedly installed on the top of the top cleaning box 19. The drive screw 21 is rotatably installed inside the top cleaning box 19 in a vertical position. The top end of the drive screw 21 extends to the top of the top cleaning box 19 and is connected to the cleaning motor 20. The output shaft is fixedly connected, the movable frame 22 is movably installed inside the top cleaning box 19 and threaded onto the surface of the drive screw 21, the hanging rod 23 is fixedly installed at the bottom of the movable frame 22, and the damping wheel 24 is rotatably installed on the inner side of the hanging rod 23. The inner side of the damping wheel 24 is fixedly connected to the end face of the rotating cleaning roller 25. When the hanging rod 23 and the damping wheel 24 descend, they contact the surface of the filter screen plate 5, and the hanging rod 23 is tightly abutted against the surface of the filter screen plate 5. When the hanging rod 23 moves downward and contacts the surface of the filter screen plate 5, its rotation drives the damping wheel 24 to rotate synchronously.

[0046] In practice, the two symmetrically arranged top cleaning boxes 19 and cleaning components 27 can independently clean the filter screens 5 stored in the side storage boxes 3 on both sides. It should be noted that when the automatic replacement unit 4 is working, the entire cleaning component 27 is stored inside the top cleaning box 19 to avoid affecting the normal operation of the automatic replacement unit 4. The side storage box 3 is equipped with an infrared sensor to detect the filter screens 5. After detecting the filter screens 5, the cleaning component 27 at that position is activated. The cleaning motor 20 starts and drives the drive screw 21 to rotate, which drives the threaded movable frame 22 to rise and fall vertically, realizing the up-and-down reciprocating cleaning of the rotating cleaning roller 25. The damping wheel 24 can buffer the contact force. The rotating cleaning roller 25 flexibly adheres to the filter screen surface for dust removal. The surface of the rotating cleaning roller 25 is a soft cleaning sponge, which avoids rigid friction damage to the activated carbon filter screen. It can effectively remove dust and debris attached to the filter screen surface, solving the problems of filter screen pore blockage and increased air resistance. With the help of a pressure detector, it can realize intelligent start-stop cleaning and replacement, accurately distinguish between filter screen blockage and adsorption saturation faults, realize filter screen recycling, reduce consumable waste, and ensure continuous purification without stopping the machine. Saturation detection is based on the time interval of the pressure detector. If the filter screen 5 reaches saturation within a short period of time after cleaning and replacement, the automatic replacement will be restarted. The replaced filter screen 5 needs to be removed and replaced with a new filter screen 5.

[0047] The working principle of this invention is:

[0048] During equipment operation, the pressure detector monitors the internal air pressure resistance of the filter housing 1 in real time to determine the working status of the filter screen 5. When dust blockage on the filter screen surface is detected, causing excessive air pressure, the automatic translation and replacement unit 4 is automatically activated. The drive motor 8 drives the drive gear 9 to mesh with the row of toothed grooves 11 of the drive rod 10, driving the filter screen to move smoothly along the strip groove 6. The cleaned spare filter screen 5 in the side storage box 3 is moved into the working position of the filter housing 1, and the saturated filter screen is moved into the other side storage box 3 for storage. This achieves fully automatic filter screen replacement without stopping the machine, thus completely solving the problems of traditional manual replacement requiring machine shutdown, cumbersome operation, and purification failure due to untimely replacement. The saturated filter screen can be surface cleaned. After the filter screen 5 is moved into the side storage box 3, the corresponding cleaning component 27 on the side storage box 3 is activated. The cleaning motor 20 drives the drive screw 21 to rotate, driving the movable frame 22 and the hanging rod 23 to move the rotating cleaning roller 25 vertically downward and roll it against the filter screen surface. The damping wheel 24 ensures even cleaning and no filter damage. As the damping wheel 24 moves downwards, it rotates, causing the rotating cleaning roller 25 to clean the surface of the filter plate 5, preparing it for future replacement. This quickly removes dust clogging the filter surface, effectively restoring its permeability and ventilation performance without requiring direct filter replacement, reducing consumable costs. When the filter plate 5 is detected to be saturated and the air pressure still fails to meet standards after cleaning, it is considered completely ineffective. The filter plate 5 is then automatically replaced again in the same manner. The replacement can be taken out from the side port of the dust collection box 17 by opening the opening door 18. The new filter plate 5 is then inserted from bottom to top into the inner positioning groove 14 and positioned using the rubber positioning clip 15. The unmentioned effect is that the entire mechanism automates the entire process of filter detection, cleaning, replacement, and storage, requiring no manual intervention. This significantly improves the intelligence of the air purifier and its adaptability to industrial scenarios, ensuring long-term stable and efficient purification.

[0049] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An automatic activated carbon adsorption mesh replacement mechanism for an air purifier, characterized in that, It includes a filter box (1) and a filter screen (5). The filter box (1) has a strip groove (6) inside. The filter box (1) has an air inlet and outlet (2) fixedly installed on both sides. The filter box (1) is fixedly installed on both sides of the filter box (1) and has a side storage box (3) communicating with the filter box (1). The side storage box (3) is equipped with a translation automatic replacement unit (4) for automatically moving and replacing the filter screen (5). The filter screen (5) is moved from bottom to top and snapped onto the translation automatic replacement unit (4).

2. The automatic activated carbon adsorption screen replacement mechanism for an air purifier according to claim 1, characterized in that, The automatic translation replacement unit (4) includes a drive motor (8), a drive gear (9), a drive rod (10), and a screen drive frame. The drive motor (8) is fixedly installed at the bottom of the filter box (1). The drive gear (9) is fixedly installed at the output shaft end of the drive motor (8). The screen drive frame is movably installed inside the filter box (1) and the side storage box (3) and moves along the strip groove (6). One end of the drive rod (10) is fixedly installed on one side of the screen drive frame. The other end of the drive rod (10) passes through the side storage box (3) on one side and extends to the side storage box (3) on the other side. It passes through the side storage box (3) and is fixedly connected to the other side of the screen drive frame. The row of toothed grooves (11) is opened on the surface of the drive rod (10). The drive gear (9) and the drive rod (10) mesh with each other.

3. The automatic activated carbon adsorption screen replacement mechanism for an air purifier according to claim 2, characterized in that, The drive rod (10) is located on the surface of the drive motor (8) near the bottom. A guide seat (12) is fixedly installed on the surface of the filter box (1). The guide seat (12) is movably sleeved on the surface of the drive rod (10).

4. The automatic activated carbon adsorption screen replacement mechanism for an air purifier according to claim 3, characterized in that, The mesh plate drive frame includes a push side plate (13), an inner positioning groove (14), and a top fixing rod (26). There are three sets of push side plates (13) and two sets of top fixing rods (26). The three sets of push side plates (13) are arranged in a linear array. The two sets of top fixing rods (26) are fixedly installed on the top of the three sets of push side plates (13). The inner positioning groove (14) is opened on the opposite side of the three sets of push side plates (13). The filter mesh plate (5) is movably engaged inside the inner positioning groove (14).

5. The automatic activated carbon adsorption mesh replacement mechanism for an air purifier according to claim 4, characterized in that, The bottom of the inner wall of the inner positioning groove (14) is fixedly installed with a rubber positioning clip (15) for positioning the filter screen (5).

6. The automatic activated carbon adsorption screen replacement mechanism for an air purifier according to claim 5, characterized in that, A guide rod (16) is fixedly installed on the side of the outermost push side plate (13) among the three sets of push side plates (13). The other end of the guide rod (16) passes through the side storage box (3) and extends to the outside of the side storage box (3).

7. The automatic activated carbon adsorption screen replacement mechanism for an air purifier according to claim 6, characterized in that, A dust collection box (17) is fixedly installed at the bottom of the side storage box (3), and an opening and closing door (18) is rotatably installed on one side of the dust collection box (17).

8. The automatic activated carbon adsorption screen replacement mechanism for an air purifier according to claim 7, characterized in that, A top cleaning box (19) is fixedly installed on the top of the side storage box (3), and a cleaning component (27) that moves up and down to clean the surface of the filter screen (5) is fixedly installed on the top cleaning box (19).

9. The automatic activated carbon adsorption screen replacement mechanism for an air purifier according to claim 8, characterized in that, The cleaning assembly (27) includes a cleaning motor (20), a drive screw (21), a movable frame (22), a hanging rod (23), a damping wheel (24), and a rotating cleaning roller (25). The cleaning motor (20) is fixedly installed on the top of the top cleaning box (19). The drive screw (21) is rotatably installed inside the top cleaning box (19) and is vertically arranged. The top end of the drive screw (21) extends above the top cleaning box (19) and is fixedly connected to the output shaft of the cleaning motor (20). The movable frame (22) is movably installed inside the top cleaning box (19). The threaded sleeve is connected to the surface of the drive screw (21). The suspension rod (23) is fixedly installed at the bottom of the movable frame (22). The damping wheel (24) is rotatably installed on the inner side of the suspension rod (23). The inner side of the damping wheel (24) is fixedly connected to the end face of the rotating cleaning roller (25). When the suspension rod (23) and the damping wheel (24) descend, they contact the surface of the filter screen (5). The suspension rod (23) is tightly connected to the surface of the filter screen (5). When the suspension rod (23) moves downward and contacts the surface of the filter screen (5), the rotation drives the damping wheel (24) to rotate synchronously.

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