Air purification filter element and preparation method thereof

Abstract

The present invention relates to the field of filter elements, and in particular to an air purification filter element and a preparation method thereof, an air purification filter element, comprising a filter assembly, a skeleton bonded to an activated carbon filter layer is provided on the inner side of the filter assembly, a mesh cover for air circulation is provided between the top edge and the bottom edge, an opening and closing assembly capable of blocking air circulation is provided on the mesh cover, an electric fan for discharging the air passing through the inside of the filter assembly to the outside is provided on the top of the mesh cover, and a linkage assembly capable of causing the skeleton to vibrate in the mesh cover is provided between the skeleton and the electric fan; when the opening and closing assembly closes the mesh holes on the mesh cover, the rotational motion of the electric fan is transmitted to the skeleton through the linkage assembly, so that the skeleton drives the filter assembly to vibrate in the mesh cover. The mesh cover is blocked by the mesh sleeve through the opening of the opening and closing assembly, ensuring that air no longer flows into the mesh cover, so that the dust dropped by the filter assembly during vibration is confined in the mesh cover.

Description

Technical Field

[0001] The invention relates to the field of filter elements, in particular to an air purification filter element, and also to a preparation method of the air purification filter element. Background Art

[0002] An air purification filter is generally composed of multiple filter layers. Through the multi-layer filtering effect, dust particles and toxic gas substances in the air are filtered and adsorbed, thereby improving the quality of the air. The existing air purification filter is composed of a primary filter layer, a high-efficiency filter layer and an activated carbon filter layer. Since the filter element needs to be replaced frequently after a period of use, and the existing filter element is inconvenient to remove during replacement, and the primary filter layer mainly realizes one-level filtration. During filtration, large particles of dust, hair, cotton wool and other substances directly adhere to the primary filter layer and need to be replaced frequently, otherwise the purification function cannot be achieved.

[0003] The currently disclosed Chinese patent CN109758839B discloses an air purification filter element based on a modified glass fiber skeleton and a preparation method thereof, comprising a vibration sealing base, on which a coarse filter element, an activated carbon filter element and a HEPA high-efficiency filter element are sequentially installed and fixed from the outside to the inside of the vibration sealing base, and the top ends of the coarse filter element, the activated carbon filter element and the HEPA high-efficiency filter element are installed on a top pressure seat, and the vibration sealing base and the top pressure seat are connected and fixed by a positioning connection and fixing mechanism, and the vibration sealing base comprises a bottom plate, and the surface of the bottom plate is sequentially provided with a first bottom ring groove, a second bottom ring groove from the outside to the inside and the third bottom ring groove, the surface of the bottom plate is located inside the third bottom ring groove and is integrally connected and fixed with a plurality of bottom fixing blocks, the bottom fixing blocks are arranged at equal angles, and the side walls of the bottom fixing blocks are provided with a first fixing strip hole, the top pressure seat includes a top pressure plate, the bottom surface of the top pressure plate is sequentially provided with a first top ring groove, a second top ring groove and a third top ring groove from the outside to the inside, a through hole concentrically arranged with the first top ring groove is provided at the center of the surface of the top pressure plate, the bottom surface of the top pressure plate is located between the third top ring groove and the through hole and is integrally connected and fixed with a plurality of top fixing blocks, the top fixing blocks are arranged at equal angles, and the side walls of the top fixing blocks are provided with a second fixing strip hole.

[0004] According to the above patent, when the air is sucked into the filter element by the motor, the coarse filter element applies pressure to the bottom pressure spring and the top pressure spring back and forth due to the effect of wind force when passing through the coarse filter element. The top pressure spring and the bottom pressure spring generate vibrations in the process of relieving pressure, so that the side wall of the coarse filter element blocks the adsorbed dust, hair and other materials from vibrating off, and does not cause the rapid accumulation of dust on the outside of the coarse filter element, thereby reducing the number of cleaning times of the coarse filter element. However, this method easily causes dust to float in the air during vibration, causing secondary pollution. Therefore, there is a need for an air purification filter element that can automatically clean the dust on the primary filter layer without scattering it while being easy to disassemble. Summary of the invention

[0005] In view of the problems existing in the prior art, an air purification filter element is provided. The present invention ensures that air does not circulate in the mesh cover by opening the opening and closing components, so that dust dropped by the filter component during vibration is confined in the mesh cover, preventing dust shaken off the upper half of the primary filter layer from drifting outward. Under normal filtration, closing the opening and closing components ensures timely cessation of the vibration function, avoiding the dust from drifting outward through the mesh cover due to skeleton vibration, thereby preventing secondary pollution.

[0006] To solve the problems of the prior art, the present invention provides an air purification filter element, comprising a filter assembly, wherein the filter assembly is composed of a primary filter layer, a high-efficiency filter layer and an activated carbon filter layer arranged in sequence from the outside to the inside; a skeleton bonded to the activated carbon filter layer is provided on the inner side of the filter assembly, the skeleton is used to maintain the shape of the filter assembly, the skeleton has a top edge and a bottom edge for limiting the filter assembly therein, a mesh cover for air circulation is provided between the top edge and the bottom edge, an opening and closing assembly capable of blocking air circulation is provided on the mesh cover, the skeleton can move in the mesh cover along its axial direction, an electric fan for discharging air passing through the inside of the filter assembly to the outside is provided on the top of the mesh cover, and a linkage assembly capable of causing the skeleton to vibrate in the mesh cover is provided between the skeleton and the electric fan; when the opening and closing assembly closes the mesh holes on the mesh cover, the rotational motion of the electric fan is transmitted to the skeleton through the linkage assembly, so that the skeleton drives the filter assembly to vibrate in the mesh cover.

[0007] Preferably, the upper and lower ends of the mesh cover are respectively provided with a top seat and a base coaxially arranged around the top edge and the bottom edge, and the top seat and the base are respectively provided with grooves for the upper and lower ends of the frame to be embedded therein and able to move therein, a vibration connecting piece is provided between the bottom edge of the frame and the base, and the linkage assembly is provided between the top edge of the frame and the electric fan.

[0008] Preferably, the lower end of the mesh cover is fixedly connected to the base, and the upper end of the mesh cover is detachably connected to the top seat. There are magnetic suction parts between the upper end of the mesh cover and the top seat that can attract each other. When the filter assembly needs to be removed from the mesh cover, only force needs to be applied to separate the top seat from the mesh cover, and the filter assembly can be directly removed upwards.

[0009] Preferably, the opening and closing assembly includes a mesh sleeve mounted on the outside of the mesh cover, the mesh sleeve can move along the axial direction of the mesh cover, the base has a bottom bracket extending downward to provide support for the filter assembly as a whole, the bottom bracket is provided with a linear driver for driving the mesh sleeve to move vertically, when the filter assembly is filtering normally, the mesh holes on the mesh sleeve are in communication with the mesh holes on the mesh cover.

[0010] Preferably, the vibration connector has a vibration ring that can be adsorbed with the bottom edge of the frame, and a vibration spring fixedly connected between the vibration ring and the base, and the vibration ring is slidably engaged in the groove of the base.

[0011] Preferably, the vibration ring has a guide rod extending downward vertically through the base, the lower end of the mesh sleeve has an inner edge extending inward, the inner edge has a slot that can maintain a sliding engagement state with the guide rod, and the cooperation between the slot and the guide rod is used to limit the rotation of the mesh sleeve relative to the mesh cover.

[0012] Preferably, the lower end of the guide rod is fixed with an end sleeve located below the inner edge. When the mesh sleeve is driven to move downward, the vibration ring is driven downward through the contact between the inner edge and the end sleeve. At this time, the mesh holes on the mesh sleeve are connected with the mesh holes on the mesh cover, and at the same time, the linkage assembly between the frame and the electric fan is disconnected.

[0013] Preferably, the linear drive has an upper electromagnetic ring fixedly connected to the inner edge, and a lower electromagnetic ring fixedly connected to the base, and a compression spring is fixedly connected between the inner edge and the base, and when the mesh sleeve and the mesh holes on the mesh cover are in a connected state, the compression spring is in a state of not being acted upon by external force.

[0014] Preferably, the linkage assembly includes a pressure ring that can be adsorbed with the top edge of the frame, and a rotating body fixedly connected to the rotating shaft of the electric fan, the pressure ring has a plurality of protrusions extending upward through the top seat, the top seat is provided with a movable opening for the protrusions to slide therein, the rotating body has a gasket that can pass through the protrusions during rotation, the surface where the protrusions contact the gasket is an arc surface, and each time the gasket passes through the protrusion, the frame is put into a vibrating state with the cooperation of the vibration spring.

[0015] The present invention also provides a method for preparing an air purification filter element, which is applied to the processing of a filter assembly and comprises the following steps:

[0016] S1. Prepare primary filter layer materials, high efficiency filter layer materials and activated carbon filter layer materials;

[0017] S2, preparing a primary filter layer material, a high-efficiency filter layer material and an activated carbon filter layer material to form a primary filter layer, a high-efficiency filter layer and an activated carbon filter layer respectively;

[0018] S3, stacking the prepared primary filter layer, high-efficiency filter layer and activated carbon filter layer in order, using bonding technology or mechanical fixing methods to ensure that the layers are tightly combined;

[0019] S4. Roll the combined primary filter layer, high-efficiency filter layer and activated carbon filter layer on the frame to form a cylindrical structure, and finally form it.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The invention blocks the mesh cover by opening the opening and closing component, ensuring that the air no longer flows into the mesh cover, so that the dust dropped by the filter component during the vibration process is confined in the mesh cover, preventing the dust dropped by the primary filter layer from scattering outward, avoiding the dust from scattering outward through the mesh cover due to the vibration of the frame, protecting the purity of the indoor air and preventing secondary pollution;

[0022] 2. The dust shaken off by vibration is collected inside the mesh cover. Multiple cleaning and vibration operations can be performed, and the dust shaken off is collected in the mesh cover. The dust accumulated in the mesh cover for a period of time is then uniformly disassembled and cleaned, which reduces the frequency of disassembling the filter element for maintenance, making the filter element more convenient to use and reducing the number of maintenance times;

[0023] 3. While the mesh sleeve is blocking the holes of the mesh cover, the linkage component is used to drive the filter assembly to vibrate, shaking off the dust on the surface of the primary filter layer outside the filter assembly; when the dust is not being cleaned, the mesh sleeve moves to align the mesh holes, allowing the outside air to enter the interior to achieve air filtration. After the mesh sleeve moves, the linkage component is also separated from the filter assembly, losing the vibration effect on the filter assembly, making the filter element run safely and stably, ensuring smooth air filtration;

[0024] 4. The present invention reduces the risk of physical damage to the filter assembly during the disassembly and assembly process through a magnetically detachable manner, improves the long-term use effect, simplifies the process of replacing and cleaning the filter assembly, reduces downtime, and improves the overall use efficiency and maintenance efficiency of the air purification filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional structural schematic diagram of an air purification filter element.

[0026] Figure 2 It is a partial plan cross-sectional view of an air purification filter element.

[0027] Figure 3 It is a partial three-dimensional structural cross-sectional view of an air purification filter element.

[0028] Figure 4 The present invention is a three-dimensional structural schematic diagram of a filter component of an air purification filter element.

[0029] Figure 5 It is a schematic diagram of the three-dimensional structure decomposition of the filter component of an air purification filter element.

[0030] Figure 6 yes Figure 2 A cross-sectional view of the three-dimensional structure at AA.

[0031] Figure 7 yes Figure 2 An enlarged schematic diagram of point B.

[0032] Figure 8 It is a schematic diagram of the vibration cleaning status of an air purification filter.

[0033] Fig. 9 It is a three-dimensional structural schematic diagram of the linkage components of an air purification filter element.

[0034] Fig.10 It is a schematic diagram of the three-dimensional structural decomposition of the linkage components of an air purification filter element.

[0035] The numbers in the figure are: 1-filter assembly; 11-primary filter layer; 12-high-efficiency filter layer; 13-activated carbon filter layer; 2-skeleton; 21-top edge; 22-bottom edge; 3-net cover; 31-top seat; 311-magnetic suction part; 32-base; 33-vibration connector; 331-vibration ring; 3311-guide rod; 3312-end sleeve; 332-vibration spring; 4-opening and closing assembly; 41-net sleeve; 411-inner edge; 4111-slot; 42-bottom support; 43-linear drive; 431-upper electromagnetic ring; 432-lower electromagnetic ring; 433-compression spring; 5-electric fan; 6-linkage assembly; 61-pressure ring; 611-bump; 62-rotating body; 621-gasket. DETAILED DESCRIPTION

[0036] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0037] See also Figure 1-Figure 6 As shown, an air purification filter element comprises a filter assembly 1, wherein the filter assembly 1 is composed of a primary filter layer 11, a high-efficiency filter layer 12 and an activated carbon filter layer 13 arranged in sequence from the outside to the inside, a skeleton 2 bonded to the activated carbon filter layer 13 is provided on the inner side of the filter assembly 1, the skeleton 2 is used to maintain the shape of the filter assembly 1, the skeleton 2 has a top edge 21 and a bottom edge 22 for limiting the filter assembly 1 therein, a mesh cover 3 for air circulation is provided between the top edge 21 and the bottom edge 22, an opening and closing assembly 4 capable of blocking air circulation is provided on the mesh cover 3, the skeleton 2 can move in the mesh cover 3 along its axial direction, an electric fan 5 for discharging the air passing through the inside of the filter assembly 1 to the outside is provided on the top of the mesh cover 3, a linkage assembly 6 capable of causing the skeleton 2 to vibrate in the mesh cover 3 is provided between the skeleton 2 and the electric fan 5, when the opening and closing assembly 4 closes the mesh on the mesh cover 3, the rotational motion of the electric fan 5 is transmitted to the skeleton 2 through the linkage assembly 6, so that the skeleton 2 drives the filter assembly 1 to vibrate in the mesh cover 3.

[0038] When the opening and closing component 4 opens the mesh holes on the mesh cover 3, the electric fan 5 still rotates. At this time, the rotational motion of the electric fan 5 cannot be transmitted to the skeleton 2 through the linkage component 6, so that the filter component 1 performs air filtration normally to avoid the filter component 1 generating vibrations in the process, which causes the dust adhered to the surface of the primary filter layer 11 to float outward through the mesh cover 3; when it is necessary to clean the dust accumulated on the primary filter layer 11, the operator starts the opening and closing component 4, the mesh holes on the mesh cover 3 are blocked, and the electric fan 5 is controlled to start at the same time, and the rotational motion of the electric fan 5 is transmitted to the skeleton 2 through the linkage component 6, so that the skeleton 2 reciprocates along the axial direction inside the mesh cover 3. This vibration acts on the primary filter layer 11, so that the dust adhered to the surface of the filter layer falls off due to the vibration, and then is restricted by the mesh cover 3 inside and falls to the bottom thereof, waiting for subsequent cleaning; the filtering accuracy of the primary filter layer 11, the high-efficiency filter layer 12 and the activated carbon filter layer 13 for dust in the air gradually increases, that is, the primary filter layer 11 can filter the largest dust particles, and the activated carbon filter layer 13 can filter the smallest dust particles.

[0039] See also Figure 2 , Figure 3 and Figure 8 As shown, the upper and lower ends of the mesh cover 3 are respectively provided with a top seat 31 and a base 32 coaxially arranged around the top edge 21 and the bottom edge 22, and the top seat 31 and the base 32 are respectively provided with grooves for the upper and lower ends of the frame 2 to be embedded and move therein, a vibration connecting piece 33 is provided between the bottom edge 22 on the frame 2 and the base 32, and the linkage assembly 6 is provided between the top edge 21 on the frame 2 and the electric fan 5.

[0040] When cleaning is required, the electric fan 5 is started by controlling the linkage component 6 to drive the frame 2 to vibrate, and the vibration is transmitted to the primary filter layer 11 through the frame 2, so that the dust adhering to the surface of the primary filter layer 11 is detached due to the vibration and falls into the mesh cover 3. The vibration connector 33 ensures the effective transmission of vibration in this process. During daily air purification operations, the linkage component 6 is not activated, and the electric fan 5 directly drives the air to pass through the mesh cover 3 and the filter component 1 in turn to perform normal air purification. At this time, the frame 2 remains stationary, avoiding the dust on the primary filter layer 11 from being scattered outward due to vibration, thereby ensuring the high efficiency of the air filtration process.

[0041] See also Figure 2 , Figure 3 and Figure 8As shown, the lower end of the mesh cover 3 is fixedly connected to the base 32, and the upper end of the mesh cover 3 is detachably connected to the top seat 31. There is a magnetic attraction portion 311 between the upper end of the mesh cover 3 and the top seat 31 that can adsorb each other. When the filter component 1 needs to be removed from the mesh cover 3, it is only necessary to apply force to separate the top seat 31 from the mesh cover 3, and the filter component 1 can be directly removed upwards.

[0042] When the filter assembly 1 needs to be cleaned or replaced, the user only needs to apply force upwards gently and use the detachable property of the magnetic suction part 311 to easily separate the top seat 31 from the upper end of the mesh cover 3. Since the top seat 31 is connected to the linkage assembly 6 at the top of the skeleton 2, the separation of the top seat 31 simultaneously releases the connection state between the skeleton 2 and the linkage assembly 6, so that the entire filter assembly 1 can be taken out directly from the top of the mesh cover 3 as a unit without any obstacles, and no complicated disassembly steps are required. After completing the cleaning or replacement of the filter assembly 1 and cleaning the dust at the bottom of the mesh cover 3, the user can replace the filter assembly 1 back into the mesh cover 3, and through a simple alignment operation, use the natural attraction of the magnetic suction part 311 to re-adsorb and fix the top seat 31 and the upper end of the mesh cover 3, and quickly complete the reset installation of the filter assembly 1, thereby simplifying the maintenance process and improving the convenience and efficiency of the maintenance of the filter assembly 1.

[0043] See also Figure 2-Figure 8 As shown, the opening and closing component 4 includes a mesh sleeve 41 mounted on the outside of the mesh cover 3, and the mesh sleeve 41 can move along the axial direction of the mesh cover 3. The base 32 has a bottom bracket 42 extending downward to provide overall support for the filter component 1. The bottom bracket 42 is provided with a linear driver 43 for driving the mesh sleeve 41 to move vertically. When the filter component 1 is filtering normally, the mesh holes on the mesh sleeve 41 are in communication with the mesh holes on the mesh cover 3.

[0044] When the filter component 1 performs conventional air filtering operations, the linear drive 43 positions the mesh sleeve 41 at a specific height so that the mesh holes on the mesh sleeve 41 are completely aligned with and connected to the mesh holes on the mesh cover 3. In this way, the air can smoothly pass through the primary filter layer 11, the high-efficiency filter layer 12 and the activated carbon filter layer 13, thereby achieving air purification and ensuring unimpeded air circulation. When the filter component 1 is cleaned, the linear drive 43 positions the mesh sleeve 41 at a specific height so that the mesh holes on the mesh sleeve 41 and the mesh holes on the mesh cover 3 are staggered and closed. When the mesh holes on the mesh sleeve 41 and the mesh cover 3 are closed, the filter component 1 is vibrated for dust removal. Compared with directly vibrating the filter component 1 for dust removal, this avoids the dispersion of dust and protects the surrounding environment from being affected.

[0045] See also Figure 2 , Figure 3 and Figure 8As shown, the vibration connector 33 has a vibration ring 331 that can be adsorbed with the bottom edge 22 on the frame 2, and a vibration spring 332 fixedly connected between the vibration ring 331 and the base 32, and the vibration ring 331 is slidably engaged in the groove of the base 32.

[0046] The bottom edge 22 and the vibration ring 331 are both magnet structures. When cleaning is required, the electric fan 5 is started and transmits power to the skeleton 2 through the linkage assembly 6. The vibration ring 331 is adsorbed together with the bottom edge 22 of the skeleton 2 due to the action of magnetic force. Therefore, the skeleton 2 is subjected to the vibration force and drives the vibration ring 331 to vibrate in the groove. The vibration spring 332 not only transmits vibration energy in this process, but also can quickly return to the original position after the skeleton 2 vibrates to maintain the continuity of vibration. During the vibration process, the dust on the surface of the primary filter layer 11 is detached due to the vibration and falls into the bottom of the mesh cover 3, waiting to be cleaned.

[0047] See also Figure 2 , Figure 3 and Figure 8 As shown, the vibration ring 331 has a guide rod 3311 that vertically passes through the base 32 and extends downward. The lower end of the mesh sleeve 41 has an inner edge 411 that extends inward. The inner edge 411 has a slot 4111 that can maintain a sliding engagement state with the guide rod 3311. The cooperation between the slot 4111 and the guide rod 3311 is used to limit the rotation of the mesh sleeve 41 relative to the mesh cover 3.

[0048] Before cleaning the filter assembly 1, the linear drive 43 is controlled to move the mesh sleeve 41 along the axial direction of the mesh cover 3, so that the mesh holes between the mesh sleeve 41 and the mesh cover 3 are closed. At this time, the filter assembly 1 can be vibrated for dust removal. In the process of moving the mesh sleeve 41, the slot 4111 on the inner edge 411 of the mesh sleeve 41 is tightly matched with the guide rod 3311, guiding the up and down sliding of the mesh sleeve 41, ensuring the directional stability of the mesh sleeve 41 during movement, and preventing the mesh alignment relationship between the mesh sleeve 41 and the mesh cover 3 from being affected by accidental rotation, or causing a jamming problem, thereby avoiding a decrease in purification efficiency or poor maintenance caused by mesh misalignment.

[0049] See also Figure 2 , Figure 3 and Figure 8 As shown, the lower end of the guide rod 3311 is fixed with an end sleeve 3312 located below the inner edge 411. When the mesh sleeve 41 is driven to move downward, the contact between the inner edge 411 and the end sleeve 3312 drives the vibration ring 331 to move downward. At this time, the mesh holes on the mesh sleeve 41 are connected with the mesh holes on the mesh cover 3, and at the same time, the linkage assembly 6 between the frame 2 and the electric fan 5 is in a disconnected state.

[0050] The end sleeve 3312 fixedly installed at the lower end of the guide rod 3311 is located directly below the inner edge 411 of the mesh sleeve 41. The mesh sleeve 41 moves downward under the action of the linear drive 43. As the mesh sleeve 41 descends, its inner edge 411 contacts the end sleeve 3312 and pushes it downward. Through the connection between the end sleeve 3312 and the vibration ring 331, the vibration ring 331 is indirectly moved downward synchronously. Since the bottom edge 22 of the skeleton 2 is adsorbed together with the vibration ring 331, the skeleton 2 also moves downward relative to the top seat 31. When the mesh sleeve 41 descends to a certain position, the mesh holes thereon are aligned with the mesh holes on the mesh cover 3, so that the air passage is connected, which means that the filter component 1 performs the filtering operation normally. At the same time, the downward movement of the skeleton 2 disconnects the linkage component 6 between it and the electric fan 5, ensuring that during normal filtering, the skeleton 2 will not generate unnecessary vibration due to the operation of the electric fan 5, thereby avoiding the dust on the surface of the primary filter layer 11 from floating outward due to vibration when the mesh holes are open.

[0051] See also Figure 2 , Figure 3 and Figure 8 As shown, the linear drive 43 has an upper electromagnetic ring 431 fixedly connected to the inner edge 411, and a lower electromagnetic ring 432 fixedly connected to the base 42, and a compression spring 433 is fixedly connected between the inner edge 411 and the base 42. When the mesh sleeve 41 and the mesh holes on the mesh cover 3 are in a connected state, the compression spring 433 is in a state of not being acted upon by external force.

[0052] The process of the linear drive 43 driving the mesh sleeve 41 is as follows: when the upper electromagnetic ring 431 and the lower electromagnetic ring 432 are powered off, the compression spring 433 is in a state of not being acted upon by external force, and the contact between the inner edge 411 and the end sleeve 3312 pulls the vibration ring 331 downward. This action not only connects the mesh holes on the mesh sleeve 41 with the mesh holes of the mesh cover 3 to facilitate normal air circulation and filtration, but also ensures that the linkage assembly 6 between the skeleton 2 and the electric fan 5 is disconnected to avoid unnecessary vibration during normal filtration; when the upper electromagnetic ring 431 and the lower electromagnetic ring 432 are powered on, the upper electromagnetic ring 431 and the lower electromagnetic ring 432 repel each other, pushing the inner edge 411 to move upward, so that the mesh holes on the mesh sleeve 41 are staggered with the mesh holes of the mesh cover 3, and the linkage assembly 6 between the skeleton 2 and the electric fan 5 is connected to perform a cleaning operation.

[0053] See also Figure 2 , Figure 3 and Figure 8-Figure 10As shown, the linkage assembly 6 includes a pressure ring 61 that can be adsorbed with the top edge 21 on the skeleton 2, and a rotating body 62 fixedly connected to the rotating shaft of the electric fan 5, the pressure ring 61 has a plurality of protrusions 611 extending upward through the top seat 31, the top seat 31 is provided with a movable opening for the protrusions 611 to slide therein, the rotating body 62 has a gasket 621 that can pass through the protrusion 611 during rotation, the surface where the protrusion 611 contacts the gasket 621 is an arc surface, and each time the gasket 621 passes through the protrusion 611, the skeleton 2 is put into a vibrating state with the cooperation of the vibration spring 332.

[0054] The top edge 21 and the pressure ring 61 are both magnet structures. When the electric fan 5 starts and rotates, the rotating body 62 rotates accordingly. During the rotation process, the gasket 621 periodically contacts and slides over the protrusion 611 on the pressure ring 61. Since the contact surface of the protrusion 611 is an arc surface and protrudes from the top surface of the top seat 31, the gasket 621 generates a downward thrust on the protrusion 611 at the moment of contact with the protrusion 611. The thrust is transmitted to the top edge 21 of the skeleton 2 through the pressure ring 61, and then transmitted to the entire filter assembly 1 through the skeleton 2. Through the cooperation of the vibration spring 332, a continuous vibration state is formed, so that the dust slightly attached to the surface of the primary filter layer 11 is shaken off, which is beneficial to maintaining the performance of the primary filter layer 11. Regular vibration cleaning reduces the accumulation of dust on the primary filter layer 11 and reduces the replacement frequency. However, after long-term use, the dust attached to the surface of the primary filter layer 11 is too firm or aged due to long-term use. At this time, the filter assembly 1 needs to be taken out as a whole and thoroughly cleaned or replaced.

[0055] A method for preparing an air purification filter element, which is applied to the processing of a filter assembly 1, comprises the following steps:

[0056] S1, prepare the primary filter layer 11 material, the high efficiency filter layer 12 material and the activated carbon filter layer 13 material;

[0057] S2, preparing the primary filter layer 11 material, the high-efficiency filter layer 12 material and the activated carbon filter layer 13 material to form the primary filter layer 11, the high-efficiency filter layer 12 and the activated carbon filter layer 13 respectively;

[0058] S3, stacking the prepared primary filter layer 11, high-efficiency filter layer 12 and activated carbon filter layer 13 in order, using bonding technology or mechanical fixing method to ensure that the layers are tightly combined;

[0059] S4, rolling the combined primary filter layer 11, high efficiency filter layer 12 and activated carbon filter layer 13 on the skeleton 2 to form a cylindrical structure, and finally forming it.

[0060] The present invention can effectively remove dust and impurities on the primary filter layer 11 by means of vibration cleaning. The opening of the opening and closing component 4 ensures that air does not flow through the mesh cover 3, so that the dust dropped by the filter component 1 during the vibration process is confined in the mesh cover 3, preventing the dust shaken off the upper half of the primary filter layer 11 from floating outward. Under normal air filtration conditions, the closing of the opening and closing component 4 ensures that the vibration function stops in a timely manner, avoiding the dust caused by the vibration of the frame 2 from floating outward through the mesh cover 3, protecting the purity of the indoor air and preventing secondary pollution.

[0061] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. An air purification filter element, comprising a filter assembly (1), the filter assembly (1) comprising a primary filter layer (11), a high-efficiency filter layer (12) and an activated carbon filter layer (13) arranged in sequence from the outside to the inside; It is characterized in that The filter assembly (1) has a frame (2) bonded to the activated carbon filter layer (13) therein on its inner side, the frame (2) being used to maintain the shape of the filter assembly (1), the frame (2) having a top edge (21) and a bottom edge (22) for confining the filter assembly (1) therein, a mesh cover (3) for air circulation being provided between the top edge (21) and the bottom edge (22), an opening and closing component (4) capable of blocking air circulation being provided on the mesh cover (3), the frame (2) being able to move in the mesh cover (3) along its axial direction, an electric fan (5) for discharging air passing through the filter assembly (1) to the outside being provided at the top of the mesh cover (3), and a linkage component (6) capable of causing the frame (2) to vibrate in the mesh cover (3) being provided between the frame (2) and the electric fan (5); The upper and lower ends of the mesh cover (3) are respectively provided with a top seat (31) and a base (32) coaxially arranged around the top edge (21) and the bottom edge (22); the top seat (31) and the base (32) are respectively provided with grooves for the upper and lower ends of the frame (2) to be embedded therein and to be able to move therein; a vibration connecting piece (33) is provided between the bottom edge (22) on the frame (2) and the base (32); and the linkage assembly (6) is provided between the top edge (21) on the frame (2) and the electric fan (5); The linkage assembly (6) comprises a pressure ring (61) capable of being mutually attracted to a top edge (21) on the frame (2), and a rotating body (62) fixedly connected to the rotating shaft of the electric fan (5), the pressure ring (61) having a plurality of protrusions (611) extending upward through the top seat (31), the top seat (31) having a movable opening for the protrusions (611) to slide therein, the rotating body (62) having a gasket (621) capable of passing through the protrusions (611) during rotation, the surface where the protrusions (611) and the gasket (621) contact each other is an arc surface, and each time the gasket (621) passes through the protrusions (611), the frame (2) is placed in a vibrating state with the cooperation of the vibration spring (332); When the opening and closing component (4) closes the mesh holes on the mesh cover (3), the rotational motion of the electric fan (5) is transmitted to the frame (2) through the linkage component (6), so that the frame (2) drives the filter component (1) to vibrate in the mesh cover (3).

2. An air purification filter element according to claim 1, characterized in that: The lower end of the mesh cover (3) is fixedly connected to the base (32), and the upper end of the mesh cover (3) is detachably connected to the top seat (31). A magnetic attraction portion (311) capable of attracting each other is provided between the upper end of the mesh cover (3) and the top seat (31). When it is necessary to remove the filter assembly (1) from the mesh cover (3), force is only required to separate the top seat (31) from the mesh cover (3), and the filter assembly (1) can be directly removed upwards.

3. An air purification filter element according to claim 1, characterized in that: The opening and closing assembly (4) comprises a mesh sleeve (41) sleeved on the outside of the mesh cover (3), the mesh sleeve (41) being movable along the axial direction of the mesh cover (3), the base (32) being provided with a bottom bracket (42) extending downwards for supporting the filter assembly (1) as a whole, the bottom bracket (42) being provided with a linear drive (43) for driving the mesh sleeve (41) to move vertically, and when the filter assembly (1) is filtering normally, the mesh holes on the mesh sleeve (41) are in communication with the mesh holes on the mesh cover (3).

4. An air purification filter element according to claim 3, characterized in that: The vibration connecting member (33) comprises a vibration ring (331) capable of being mutually adsorbed with a bottom edge (22) on the frame (2), and a vibration spring (332) fixedly connected between the vibration ring (331) and the base (32); the vibration ring (331) is slidably engaged in a groove of the base (32).

5. An air purification filter element according to claim 4, characterized in that: The vibration ring (331) is provided with a guide rod (3311) which vertically passes through the base (32) and extends downward. The lower end of the mesh sleeve (41) is provided with an inner edge (411) which extends inward. The inner edge (411) is provided with a slot (4111) which can maintain a sliding engagement state with the guide rod (3311). The cooperation between the slot (4111) and the guide rod (3311) is used to limit the rotation of the mesh sleeve (41) relative to the mesh cover (3).

6. An air purification filter element according to claim 5, characterized in that: The lower end of the guide rod (3311) is fixedly provided with an end sleeve (3312) located below the inner edge (411). When the mesh sleeve (41) is driven to move downward, the contact between the inner edge (411) and the end sleeve (3312) drives the vibration ring (331) to move downward. At this time, the mesh holes on the mesh sleeve (41) are connected to the mesh holes on the mesh cover (3), and at the same time, the linkage component (6) between the frame (2) and the electric fan (5) is caused to be in a disconnected state.

7. An air purification filter element according to claim 6, characterized in that: The linear drive (43) comprises an upper electromagnetic ring (431) fixedly connected to the inner edge (411), and a lower electromagnetic ring (432) fixedly connected to the bottom bracket (42); a compression spring (433) is fixedly connected between the inner edge (411) and the bottom bracket (42); when the mesh sleeve (41) and the mesh holes on the mesh cover (3) are in a connected state, the compression spring (433) is in a state not subjected to external force.

8. A method for preparing an air purification filter element, applied to the processing of a filter component (1) of an air purification filter element according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1, preparing materials for a primary filter layer (11), a high efficiency filter layer (12) and an activated carbon filter layer (13); S2, preparing the primary filter layer (11) material, the high-efficiency filter layer (12) material and the activated carbon filter layer (13) material to form the primary filter layer (11), the high-efficiency filter layer (12) and the activated carbon filter layer (13) respectively; S3, stacking the prepared primary filter layer (11), high-efficiency filter layer (12) and activated carbon filter layer (13) in order, using bonding technology or mechanical fixing methods to ensure that the layers are tightly bonded; S4, rolling the combined primary filter layer (11), high efficiency filter layer (12) and activated carbon filter layer (13) on the skeleton (2) to form a cylindrical structure, and finally forming it.

Images