A double-layer filter element air purification device

Abstract

The utility model discloses a double -deck filter element air purification device relates to air purification technical field. This double -deck filter element air purification device, including purifier shell, the upper end and the lower end of purifier shell are respectively clamped with purifier top shell and purifier bottom shell, the fixed assembly of filter core includes spacing ring, and the upper end of first support plate is provided with second support plate, and the inner side of corresponding first limit slot of first support plate and second support plate surface all are clamped with first air filter core, and the upper end of first support plate is clamped with the connecting cover, the inner side of multiple second limit slots all are clamped with second air filter core, and only need to pull second limit rod to separate first limit rod and second limit rod, do not need to remove first support plate, the handle fixed on second support plate and connecting cover upper end simultaneously, take out first air filter core and second air filter core fast, reduce the dismounting step, and greatly shorten the time of replacement, avoid the device long -time shutdown because of maintenance, improve work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of air purification technology, and in particular to a dual-layer filter air purification device. Background Technology

[0002] Air purifiers, also known as "air cleaners," "air fresheners," or "purifiers," are products that can adsorb, decompose, or transform various air pollutants, effectively improving air cleanliness. They are mainly divided into household, commercial, industrial, and building types. A Chinese utility model patent, authorized announcement number "CN213492528U," discloses an air purification device that facilitates filter replacement, including a main body shell, with a touch screen fixedly connected to the front outer surface of the main body shell.

[0003] The above-mentioned technical solution, through the design of an adaptive support, allows the movable rack to move upward by stepping on the foot pedal during use. This drives the rotation of gears one and two, enabling the inner frame to be raised and lowered, ultimately allowing the suction cup to better adhere to the ground. However, the above-mentioned technical solution still has certain drawbacks. When replacing the filter of the air purifier, a large number of parts on the air purifier need to be disassembled to remove and replace the filter. This replacement process consumes a lot of time, significantly affecting the working efficiency of the air purifier and reducing its practicality. Therefore, this utility model proposes a new solution. Utility Model Content

[0004] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide a double-layer filter air purification device. This solves the problem that when replacing the filter of an air purification device, a large number of parts need to be removed before the filter can be taken out and replaced, which takes a lot of time and affects the working efficiency of the air purification device.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a double-layer filter air purification device, comprising a purifier shell, wherein a top shell and a bottom shell are respectively snapped onto the upper and lower ends of the purifier shell; The filter element fixing assembly is disposed between the outer shell and the top shell of the purifier. The filter element fixing assembly includes a limiting ring, a first support plate is snapped onto the upper end of the limiting ring, a second support plate is disposed on the upper end of the first support plate, and multiple first limiting grooves are opened on the surface of the first support plate and the second support plate. The first air filter element is snapped into the inner side of the first limiting groove corresponding to the surface of the first support plate and the second support plate, and a connecting cover is snapped into the upper end of the first support plate. The surface of the connecting cover is provided with multiple second limiting grooves, and the inner side of each of the multiple second limiting grooves is engaged with a second air filter element.

[0006] Preferably, the plurality of second air filters extend into the interior of the corresponding first air filter.

[0007] Preferably, a second filter screen is provided on the opposite surfaces of the purifier outer shell and the purifier bottom shell, and a first limiting rod is snapped into the inner side of the second filter screen, and the surface of the first limiting rod is threaded. The surface of the first limiting rod is threaded with a nut, and the first limiting rod is fixed to the second filter screen by the nut.

[0008] Preferably, a second limiting rod is provided at the upper end of the first limiting rod, the second limiting rod can be fixedly connected to the first limiting rod, and the upper end of the second limiting rod passes through the first support plate; The surface of the second limiting rod is threaded with a nut, and the second limiting rod and the first support plate are fixed together by the nut.

[0009] Preferably, a fan is installed inside the bottom shell of the purifier.

[0010] Preferably, both the top shell and the bottom shell of the purifier are fixedly connected to the front side of the vent pipe, and the inner wall of the vent pipe on the front side of both the top shell and the bottom shell of the purifier is fitted with a first filter screen.

[0011] Preferably, the outer sides of the two ventilation pipes are tangent to the edges of the corresponding top and bottom shells of the purifier.

[0012] Preferably, the second limiting rod can be engaged with the upper end of the first limiting rod.

[0013] Preferably, both the upper ends of the second support plate and the connecting cover can be fixedly connected with multiple handles.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. This dual-layer filter air purifier solves the problem of traditional devices requiring the removal of numerous parts when replacing filters. Both the top and bottom shells of the purifier are snapped into the outer casing, allowing for direct disassembly without tools. The second limiting rod can be engaged with the upper end of the first limiting rod; when replacing the second filter, simply pull the second limiting rod to separate the first and second limiting rods without removing the first support plate. Simultaneously, the handles fixed to the upper end of the second support plate and connecting cover allow users to directly apply force to separate the components and quickly remove the first and second air filters. The entire maintenance process eliminates the need to disassemble complex structures, reducing disassembly steps, significantly shortening replacement time, avoiding prolonged downtime due to maintenance, and improving work efficiency. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the structure of a double-layer filter air purification device according to the present invention; Figure 2 This is a schematic diagram of the second filter screen of this utility model; Figure 3 This is a schematic diagram of the air purifier casing of this utility model; Figure 4 This is a schematic diagram showing the connection between the first support plate and the connecting cover of this utility model; Figure 5 This is a schematic diagram of the first air filter element of this utility model; Figure 6 This is a schematic diagram of the handle of this utility model; Figure 7 This is a schematic diagram showing the connection between the first limiting rod and the second limiting rod of this utility model; Figure 8 This is a schematic diagram of the second air filter element of this utility model; Figure 9 This is a schematic diagram showing the connection between the first air filter element and the second air filter element of this utility model.

[0016] Reference numerals in the attached drawings: 1. Purifier outer shell; 2. Purifier top shell; 3. Purifier bottom shell; 4. Limiting ring; 5. First support plate; 6. Second support plate; 7. First air filter; 8. Connecting cover; 9. Second air filter; 10. First limiting groove; 11. Second limiting groove; 12. Fan; 13. First limiting rod; 14. Second limiting rod; 15. Handle; 16. First filter screen; 17. Second filter screen. Detailed Implementation

[0017] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0018] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0020] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0021] Please see Figure 1-9 This utility model provides a technical solution: a double-layer filter air purification device, wherein the upper end of the purifier shell 1 is snapped into the top shell 2 of the purifier, and the lower end is snapped into the bottom shell 3 of the purifier, which can be directly disassembled without tools, solving the problem of cumbersome disassembly of traditional devices; both the top shell 2 and the bottom shell 3 of the purifier are fixedly connected to the front side of the purifier shell 2 and the purifier bottom shell 3, and the first filter screen 16 snapped into the inner wall of the purifier shell 1 can perform preliminary coarse filtration on the incoming air, blocking large dust, hair and other impurities, and preventing them from clogging the subsequent filter element; and the outer side of the purifier shell 1 is tangent to the edge of the shell, which can expand the air intake range, improve the air intake efficiency, and ensure the purification air volume.

[0022] The limiting ring 4 on the inner side of the purifier housing 1 is engaged with the first support plate 5 to provide stable support for the filter element fixing assembly; the first limiting groove 10 on the surface of the first support plate 5 and the second support plate 6 is used to fix the first air filter element 7, and the second limiting groove 11 on the surface of the connecting cover 8 is used to fix the second air filter element 9, and the second air filter element 9 extends into the interior of the first air filter element 7 to form an "inner and outer nested" structure; the air first passes through the first air filter element 7 to intercept medium-sized pollutants such as PM2.5 and pollen, and then passes through the second air filter element 9 to deeply adsorb tiny pollutants such as formaldehyde and bacteria, achieving graded purification of "coarse filtration and fine filtration". Compared with traditional single-layer filtration, the purification accuracy is significantly improved.

[0023] The second filter screen 17 on the opposite side of the purifier outer shell 1 and the purifier bottom shell 3 can perform a final filtration before the air is discharged to prevent the residue of tiny impurities; the first limiting rod 13 snapped into the inner side of the second filter screen 17 is fixed by a nut, and the second limiting rod 14 at the upper end of the first limiting rod 13 passes through the first support plate 5 and is fixed by a nut. The double fixing structure can prevent the vibration of the fan 12 during operation from causing the components to loosen, and ensure the stable operation of the device.

[0024] The diameter of the second limiting rod 14 is smaller than that of the first limiting rod 13. When the nut on the surface of the first limiting rod 13 is unscrewed, the nut can be easily detached from the second limiting rod 14. The handle 15 fixed to the upper end of the second support plate 6 and the connecting cover 8 has anti-slip texture on its surface. The operator can directly hold the handle 15 and pull to quickly separate the second support plate 6 from the first support plate 5 and the connecting cover 8 from the first support plate 5 without the need for prying with tools, thus avoiding wear on the parts. At the same time, the first air filter 7 and the second air filter 9 can be quickly removed, greatly shortening the replacement time.

[0025] After the fan 12 inside the bottom shell 3 of the purifier is started, a stable negative pressure will be formed inside the device, guiding the air to flow along the path of "air intake of the top shell 2 of the purifier → coarse filtration of the first filter screen 16 → filtration of the first air filter element 7 → filtration of the second air filter element 9 → auxiliary filtration of the second filter screen 17 → air outlet of the bottom shell 3 of the purifier", thus completing a highly efficient purification cycle. Moreover, the detachable top shell 2 and bottom shell 3 of the purifier, as well as the snap-fit ​​limit rod and filter element assembly, together achieve "fewer parts disassembly and quick maintenance", solving the problems of long maintenance time and reduced work efficiency of traditional devices.

[0026] Working principle: When the device is started, outside air first enters the device through the vent pipe on the front side of the top shell 2 of the purifier, which is snapped into the outer shell 1 of the purifier. At this time, the first filter screen 16 snapped into the inner wall of the vent pipe will perform preliminary coarse filtration on the incoming air, directly blocking large dust, hair and other large particulate impurities in the air, preventing them from entering the device and clogging the filter element or damaging the core components, thus laying the foundation for subsequent fine filtration. In addition, the outer sides of the two vent pipes are tangent to the edges of the corresponding top shell 2 and bottom shell 3 of the purifier, respectively. This design can expand the air intake and exhaust range and improve the air intake efficiency.

[0027] The air that has passed through the first filter screen 16 will flow to the filter element fixing assembly located between the purifier housing 1 and the purifier top housing 2. The first support plate 5 and the second support plate 6 in the filter element fixing assembly are provided with multiple first limiting grooves 10. The first air filter element 7 is snapped into the inner side of the corresponding first limiting groove 10. When the air passes through the first air filter element 7, it will be intercepted by medium-sized pollutants (such as pollen and PM2.5), completing the first layer of fine filtration.

[0028] The air that has completed the first layer of filtration continues to enter the connecting cover 8 that is snapped into the upper end of the first support plate 5; the surface of the connecting cover 8 is provided with multiple second limiting grooves 11, and the second air filter element 9 is snapped into the inner side of the second limiting groove 11, and the multiple second air filter elements 9 extend into the corresponding first air filter element 7, forming a "nested" filtration structure; the air further contacts the second air filter element 9 here, and is intercepted to intercept pollutants with smaller particle size (such as formaldehyde and bacteria), achieving deep purification and greatly improving air cleanliness.

[0029] The air filtered by the double-layer filter will flow downwards to the second filter 17 set on the opposite side of the purifier outer shell 1 and the purifier bottom shell 3. The second filter 17 will intercept the air one last time to prevent the residue of tiny impurities and further ensure the cleanliness of the air outlet.

[0030] After the fan 12 installed inside the bottom shell 3 of the purifier is started, it will create a stable negative pressure environment inside the device, guiding the air to flow in an orderly manner along the path of "air intake of the top shell 2 of the purifier → coarse filtration of the first filter screen 16 → double-layer fine filtration of the first air filter element 7 and the second air filter element 9 → auxiliary filtration of the second filter screen 17", and finally the clean air is discharged from the ventilation pipe on one side of the bottom shell 3 of the purifier, completing the entire air purification cycle.

[0031] The inner side of the second filter screen 17 is snapped with a first limiting rod 13. The surface of the first limiting rod 13 is threaded, and the second filter screen 17 can be firmly fixed to the first limiting rod 13 by a nut. A second limiting rod 14 is provided at the upper end of the first limiting rod 13. The second limiting rod 14 passes through the first support plate 5. The first support plate 5 is also fixed to the second limiting rod 14 by a nut, ensuring that the filter element fixing assembly, the second filter screen 17 and the main body of the device are stably connected, and preventing the components from loosening due to vibration when the fan 12 is working.

[0032] The diameter of the second limiting rod 14 is smaller than that of the first limiting rod 13. When the nut on the surface of the first limiting rod 13 is unscrewed, the nut can be easily disengaged from the second limiting rod 14. At the same time, the independent setting of the second support plate 6 and the connecting cover 8 facilitates individual or overall disassembly, thereby quickly removing the first air filter 7 and the second air filter 9 that are snapped onto the inner wall. Furthermore, the top shell 2 and the bottom shell 3 of the purifier are snapped onto the outer shell 1 of the purifier and can be directly disassembled without removing a large number of parts, which greatly shortens the time for filter replacement and component maintenance, and ensures the continuous and efficient operation of the device.

[0033] Furthermore, the device solves the problem of traditional devices requiring the removal of numerous parts when replacing filters; both the top shell 2 and bottom shell 3 of the purifier are snapped into the outer shell 1 of the purifier, allowing for direct disassembly without tools; the second limiting rod 14 can be snapped into the upper end of the first limiting rod 13, so when replacing the second filter 17, only the second limiting rod 14 needs to be pulled to separate the first limiting rod 13 and the second limiting rod 14, without removing the first support plate 5; at the same time, the handle 15 fixed to the upper end of the second support plate 6 and the connecting cover 8 allows the user to directly apply force to separate the components and quickly remove the first air filter 7 and the second air filter 9; the entire maintenance process does not require disassembling complex structures, reducing disassembly steps, significantly shortening replacement time, avoiding prolonged downtime due to maintenance, and improving work efficiency.

[0034] The device adopts a double-layer nested structure of "first air filter 7 and second air filter 9". The second air filter 9 extends into the corresponding first air filter 7, so that the air first passes through 7 to intercept medium-sized pollutants such as PM2.5 and pollen, and then passes through the second air filter 9 to deeply adsorb tiny pollutants such as formaldehyde and bacteria, realizing graded purification of "coarse filtration and fine filtration". Compared with the traditional single-layer filtration solution, the purification accuracy is improved.

[0035] Example 1: The second limiting rod 14 uses a snap-fit ​​connection, improving the ease of component separation. The original structure of "the second limiting rod 14 is fixedly connected to the upper end of the first limiting rod 13" is replaced with "the second limiting rod 14 can be snapped into the upper end of the first limiting rod 13". Specifically, an annular groove is opened at the top of the first limiting rod 13, and a locking block matching the groove is set at the bottom of the second limiting rod 14. During assembly, the locking block at the bottom of the second limiting rod 14 is aligned with the groove at the top of the first limiting rod 13 and pressed to achieve the snapping and fixing of the two.

[0036] When the user needs to replace the second filter 17, there is no need to remove the first support plate 5 first, as is the case with traditional fixed connection structures. Simply unscrew the nut that fixes the first support plate 5 on the surface of the second limiting rod 14, pull the second limiting rod 14 upward to separate it from the first limiting rod 13, and then you can directly remove the first support plate 5 to expose the second filter 17 underneath. Next, unscrew the nut that fixes the second filter 17 on the surface of the first limiting rod 13 to quickly replace the second filter 17. After the replacement is completed, follow the reverse steps to snap the first limiting rod 13 and the second limiting rod 14 together, and fix the second filter 17 and the first support plate 5.

[0037] Without the need for tools to disassemble the fixed connection between the first limiting rod 13 and the second limiting rod 14, the two can be separated by simply pulling them apart. This greatly reduces the disassembly steps when replacing the second filter screen 17, shortens maintenance time, avoids affecting the working efficiency of the device due to complex disassembly, and improves practicality.

[0038] Example 2: A handle 15 is added to the second support plate 6 and the connecting cover 8 to optimize the filter element disassembly operation. Three symmetrically distributed handles 15 are evenly fixedly connected to the upper edge of the second support plate 6; three symmetrically distributed handles 15 are also evenly fixedly connected to the upper edge of the connecting cover 8, and the handles 15 are all made of high temperature resistant and non-slip plastic material with concave and convex textures on the surface.

[0039] When only the first air filter element 7 needs to be replaced, the user can hold the handle 15 at the upper end of the second support plate 6 and pull upwards to separate the second support plate 6 from the first support plate 5 (the original snap-fit ​​structure remains unchanged). At this time, the first air filter element 7 in the first limiting groove 10 on the surface of the first support plate 5 and the second support plate 6 is fully exposed. After removing the old filter element and replacing it with a new one, the second support plate 6 can be snapped back into its original position using the handle 15. When the second air filter element 9 needs to be replaced, the user can hold the handle 15 at the upper end of the connecting cover 8 and pull upwards to quickly separate the connecting cover 8 from the first support plate 5. The second air filter element 9 in the second limiting groove 11 on the surface of the connecting cover 8 will then be exposed. After replacement, the connecting cover 8 can be snapped back into the upper end of the first support plate 5 using the handle 15.

[0040] When disassembling the second support plate 6 and connecting cover 8 using the traditional device, the lack of a force-bearing point means that users need to use tools to pry or pull them by hand, which can easily lead to wear on the edges of the parts and low disassembly efficiency. With the addition of handle 15, users can apply force directly through handle 15 without the need for additional tools, thus avoiding wear on the parts and quickly separating the corresponding parts. This further simplifies the replacement process of the first air filter 7 and the second air filter 9. When used in conjunction with the snap-fit ​​limiting rod of Embodiment 1, it can achieve efficient maintenance without disassembling a large number of parts or borrowing tools, solving the problems of time-consuming maintenance and reduced work efficiency of the traditional device.

[0041] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A dual-layer filter air purification device, characterized in that: Includes an air purifier housing (1), with an air purifier top shell (2) and an air purifier bottom shell (3) respectively attached to the upper and lower ends of the air purifier housing (1). The filter element fixing assembly is located between the purifier housing (1) and the purifier top housing (2). The filter element fixing assembly includes a limiting ring (4), the upper end of the limiting ring (4) is snapped with a first support plate (5), the upper end of the first support plate (5) is provided with a second support plate (6), and the surfaces of the first support plate (5) and the second support plate (6) are provided with multiple first limiting grooves (10). The first air filter element (7) is snapped into the inner side of the first limiting groove (10) corresponding to the surface of the first support plate (5) and the second support plate (6), and the connecting cover (8) is snapped into the upper end of the first support plate (5). The surface of the connecting cover (8) is provided with multiple second limiting grooves (11), and the inner side of each of the multiple second limiting grooves (11) is fitted with a second air filter element (9).

2. The dual-layer filter air purification device according to claim 1, characterized in that: Multiple second air filters (9) extend into the interior of their respective first air filters (7).

3. The dual-layer filter air purification device according to claim 1, characterized in that: The purifier housing (1) and the purifier bottom shell (3) are provided with a second filter screen (17) on their opposite sides. A first limiting rod (13) is snapped into the inner side of the second filter screen (17). The surface of the first limiting rod (13) is threaded. The surface of the first limiting rod (13) is threaded with a nut, and the first limiting rod (13) is fixed to the second filter screen (17) by the nut.

4. The dual-layer filter air purification device according to claim 3, characterized in that: The upper end of the first limiting rod (13) is provided with a second limiting rod (14), which can be fixedly connected to the first limiting rod (13). The upper end of the second limiting rod (14) passes through the first support plate (5). The second limiting rod (14) has a nut threaded onto its surface, and the second limiting rod (14) and the first support plate (5) are fixed together by the nut.

5. The dual-layer filter air purification device according to claim 1, characterized in that: A fan (12) is installed inside the bottom shell (3) of the purifier.

6. The dual-layer filter air purification device according to claim 1, characterized in that: The front sides of the top shell (2) and bottom shell (3) of the purifier are both fixedly connected with vent pipes, and the inner walls of the vent pipes on the front sides of the top shell (2) and bottom shell (3) of the purifier are both fitted with first filter screens (16).

7. The dual-layer filter air purification device according to claim 6, characterized in that: The outer sides of the two ventilation pipes are tangent to the edges of the corresponding top shell (2) and bottom shell (3) of the purifier, respectively.

8. The dual-layer filter air purification device according to claim 4, characterized in that: The second limiting rod (14) can be engaged with the upper end of the first limiting rod (13).

9. The dual-layer filter air purification device according to claim 1, characterized in that: Multiple handles (15) can be fixedly connected to the upper ends of the second support plate (6) and the connecting cover (8).

Images