A filter element sealing structure

Abstract

This utility model provides a filter element sealing structure, including a housing. An air outlet is formed at the center of the inner top wall of the housing. An upper sealing groove is formed on the outer side of the inner top wall of the housing near the air outlet. A limiting ring is fixedly connected to the outer side of the inner top wall of the housing near the upper sealing groove. The filter element body is fitted to the inner side wall of the limiting ring. This utility model uses the continuous elastic force of a limiting spring to push the limiting seat tightly against the filter element body. Combined with the tight fit of the elastic sealing ring with the upper and lower sealing grooves and the auxiliary sealing of the annular sealing ring, a multi-seal structure is formed, effectively preventing the filter element body from failing to seal due to vibration and loosening, thus ensuring the filtration effect. The threaded connection between the limiting cover and the mounting hole, along with a cross-shaped knob, allows the installation and removal of the filter element body to be completed simply by rotating the limiting cover, simplifying the operation process, reducing the cost of filter element body replacement and maintenance, and improving convenience in practical applications.

Description

Technical Field

[0001] This utility model relates to the field of filter element sealing technology, and in particular to a filter element sealing structure. Background Technology

[0002] The air filter in an air purifier is the core component for purifying indoor air, primarily functioning to intercept and adsorb pollutants. Common types include HEPA filters and activated carbon filters. HEPA filters are highly effective at filtering fine particulate matter such as PM2.5, dust, pollen, and smoke; activated carbon filters excel at adsorbing harmful gases and odors such as formaldehyde and benzene. Some purifiers use composite filters, integrating multiple filtration functions. Regularly replacing the filter is crucial to ensuring purification effectiveness; if it is not replaced for a long time, the filter can easily become saturated and may even become a source of pollution.

[0003] Existing filter element sealing structures are relatively simple in sealing method. During equipment handling and transportation, the filter element is easily loosened by vibration, which leads to seal failure, resulting in poor filtration effect and affecting the normal operation of the equipment. In addition, the existing filter element sealing structure is relatively cumbersome to install and disassemble, which increases the cost of filter element replacement and maintenance and is not conducive to convenient operation in practical applications. Therefore, a new filter element sealing structure is proposed. Utility Model Content

[0004] In view of this, the present invention aims to provide a filter element sealing structure to solve or alleviate the technical problems existing in the prior art, or at least provide a beneficial alternative.

[0005] The technical solution of this utility model embodiment is implemented as follows: A filter element sealing structure includes a housing. An air outlet is formed at the center of the inner top wall of the housing. An upper sealing groove is formed on the outer side of the inner top wall of the housing near the air outlet. A limiting ring is fixedly connected to the outer side of the inner top wall of the housing near the upper sealing groove. A filter element body is fitted to the inner side wall of the limiting ring. An installation hole is formed at the center of the lower surface of the housing. A limiting cover is threadedly connected to the inner side wall of the installation hole. A limiting groove is formed on the outer side of the upper surface of the limiting cover. A limiting spring is rotatably connected to the inner wall of the limiting groove, and a limiting seat is fixedly connected to the top of the limiting spring. The outer wall of the limiting seat is fitted to the upper part of the inner wall of the mounting hole. A lower sealing groove is provided on the outer side of the inner bottom wall of the limiting seat. The lower part of the outer wall of the filter element body is fitted to the inner wall of the limiting seat. Elastic sealing rings are fixedly connected to the outer sides of both the upper and lower surfaces of the filter element body. The outer sides of the two elastic sealing rings that are far apart are respectively fitted to the inner walls of the upper sealing groove and the lower sealing groove.

[0006] More preferably, the upper and lower parts of the outer sidewall of the filter element body are provided with annular grooves, and the inner sidewalls of the two annular grooves are fixedly connected with annular sealing rings. The outer sidewalls of the two annular sealing rings are respectively attached to the middle of the inner bottom wall of the limiting ring and the limiting seat.

[0007] More preferably, a cross knob is fixedly connected to the center of the lower surface of the limiting cover.

[0008] More preferably, multiple air inlets are provided on both sides of the housing.

[0009] More preferably, an air outlet pipe is provided on the outer side of the upper surface of the housing near the air outlet, and a fan is fixedly connected to the outer wall of the air outlet pipe.

[0010] More preferably, a protective shell is fixedly connected to the outer side of the upper surface of the housing, and an air outlet is provided at the center of the front surface of the protective shell, with the air outlet of the fan connected to the air outlet.

[0011] More preferably, the inner wall of the air outlet is provided with an adjustable louvered grille.

[0012] More preferably, a plurality of support feet are fixedly connected to the outer side of the lower surface of the housing, and the bottom of each of the plurality of support feet is fixedly connected to an anti-slip pad.

[0013] The present invention has the following advantages due to the adoption of the above technical solution:

[0014] 1. This utility model uses the continuous elastic force of the limiting spring to push the limiting seat to tighten the filter element body. Combined with the tight fit of the elastic sealing ring with the upper and lower sealing grooves and the auxiliary sealing of the annular sealing ring, a multi-seal structure is formed, which effectively avoids the sealing failure caused by the filter element body loosening due to vibration and ensures the filtration effect.

[0015] 2. This utility model uses a threaded connection between the limiting cover and the mounting hole, along with a cross knob, to allow the filter element body to be installed and removed simply by rotating the limiting cover. This simplifies the operation process, reduces the cost of replacing and maintaining the filter element body, and improves the convenience in practical applications.

[0016] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is an overall structural diagram of the present invention;

[0019] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0020] Figure 3 This is a structural diagram of the filter element body and the limiting seat of this utility model;

[0021] Figure 4 For the present utility model Figure 3 Another perspective on the structure diagram;

[0022] Figure 5 For the present utility model Figure 2 Enlarged view of area A.

[0023] Reference numerals: 11. Housing; 12. Air outlet; 13. Upper sealing groove; 14. Limiting ring; 15. Filter element body; 16. Mounting hole; 17. Limiting cover; 18. Limiting groove; 19. Limiting spring; 20. Limiting seat; 21. Lower sealing groove; 22. Elastic sealing ring; 23. Annular groove; 24. Annular sealing ring; 25. Cross knob; 26. Air inlet; 27. Air outlet duct; 28. Fan; 29. ​​Protective shell; 30. Air outlet; 31. Adjustable louvered grille; 32. Support foot; 33. Anti-slip pad. Detailed Implementation

[0024] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0025] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0026] like Figures 1-5As shown, this utility model embodiment provides a filter element sealing structure, including a housing 11. An air outlet 12 is provided at the center of the inner top wall of the housing 11. An upper sealing groove 13 is provided on the outer side of the inner top wall of the housing 11 near the air outlet 12. A limiting ring 14 is fixedly connected to the outer side of the inner top wall of the housing 11 near the upper sealing groove 13. A filter element body 15 is fitted to the inner side wall of the limiting ring 14. An installation hole 16 is provided at the center of the lower surface of the housing 11. A limiting cover 17 is threadedly connected to the inner side wall of the installation hole 16. A limiting groove 18 is provided on the outer side of the upper surface of the limiting cover 17. A limiting spring 19 is rotatably connected to the inner side wall of the limiting groove 18. A limiting seat 20 is fixedly connected to the top of the limiting spring 19. The outer side wall of the limiting seat 20 is fitted to... The upper part of the inner sidewall of the mounting hole 16 is connected to the upper part of the inner sidewall of the limiting seat 20. The lower part of the outer sidewall of the filter element body 15 is attached to the inner sidewall of the limiting seat 20. The upper and lower outer sides of the filter element body 15 are fixedly connected with elastic sealing rings 22. The outer sides of the outer walls of the two elastic sealing rings 22 that are far apart are attached to the inner sidewalls of the upper sealing groove 13 and the lower sealing groove 21, respectively. After the limiting spring 19 is deformed by force, it pushes the limiting seat 20 upward, so that the limiting seat 20 tightly presses against the lower part of the filter element body 15. Finally, the continuous elastic force of the limiting spring 19 ensures that the elastic sealing rings 22 on the upper and lower sides of the filter element body 15 are always in a compressed state, forming a seal and preventing unfiltered air from leaking from the gaps.

[0027] In one embodiment, specifically: the upper and lower parts of the outer sidewall of the filter element body 15 are provided with annular grooves 23, and the inner sidewalls of the two annular grooves 23 are fixedly connected with annular sealing rings 24. The outer sidewalls of the two annular sealing rings 24 are respectively attached to the middle of the inner bottom wall of the limiting ring 14 and the limiting seat 20. The annular sealing rings 24 seal the connection between the filter element body 15 and the limiting ring 14 and the limiting seat 20, thereby forming a multi-layer sealing structure.

[0028] In one embodiment, specifically: a cross knob 25 is fixedly connected to the center of the lower surface of the limiting cover 17, and the limiting cover 17 can be easily rotated for disassembly and assembly operations via the cross knob 25.

[0029] In one embodiment, specifically: multiple air inlets 26 are provided on both sides of the housing 11, through which external air can easily enter the interior of the housing 11.

[0030] In one embodiment, specifically: an air outlet pipe 27 is provided on the outer side of the upper surface of the housing 11 near the air outlet 12, and a fan 28 is fixedly connected to the outer wall of the air outlet pipe 27. The fan 28 creates a negative pressure at the air outlet pipe 27, driving air flow, so that outside air enters the interior of the housing 11 from multiple air inlets 26 on both sides of the housing 11 for filtration.

[0031] In one embodiment, specifically: a protective shell 29 is fixedly connected to the outer side of the upper surface of the housing 11, and an air outlet 30 is provided at the center of the front surface of the protective shell 29. The air outlet end of the fan 28 is connected to the air outlet 30. The protective shell 29 not only facilitates the protection of the fan 28, but also increases the aesthetics.

[0032] In one embodiment, specifically: the inner wall of the air outlet 30 is provided with an adjustable louver grille 31, and the direction of clean air discharge can be easily controlled by adjusting the adjustable louver grille 31 on the inner side of the air outlet 30.

[0033] In one embodiment, specifically: a plurality of support feet 32 ​​are fixedly connected to the outer side of the lower surface of the housing 11, and anti-slip pads 33 are fixedly connected to the bottom of the plurality of support feet 32. Through the support feet 32 ​​and anti-slip pads 33 at the bottom of the housing 11, the stability of the entire device is ensured and slippage is prevented during operation.

[0034] In operation: When the device is stationary, the housing 11 is stably positioned by the support feet 32 ​​and anti-slip pads 33 at the bottom, preventing slippage during operation; the filter element body 15 is pre-installed inside the housing 11, with its upper outer wall abutting the inner wall of the limiting ring 14 and its lower outer wall abutting the inner wall of the limiting seat 20; the elastic sealing rings 22 on the upper and lower surfaces of the filter element body 15 are respectively embedded in the upper sealing groove 13 of the housing 11 and the lower sealing groove 21 of the limiting seat 20, while the annular sealing rings 24 in the upper and lower annular grooves 23 of the filter element body 15 are tightly fitted with the middle of the inner bottom wall of the limiting ring 14 and the limiting seat 20; by rotating the cross knob 25, the limiting cover 17 is driven upward along the inner wall of the mounting hole 16. When screwed in, the limiting cover 17 compresses the limiting spring 19. The limiting spring 19 deforms under force and pushes the limiting seat 20 upwards, causing the limiting seat 20 to tightly press against the lower part of the filter element body 15. Ultimately, the continuous elastic force of the limiting spring 19 ensures that the elastic sealing rings 22 at the top and bottom of the filter element body 15 are always in a compressed state, forming a seal and preventing unfiltered air from leaking out. When the equipment starts, the fan 28 is powered on and runs, creating negative pressure at the air outlet 27, driving airflow. Outside air enters the interior of the housing 11 through multiple air inlets 26 on both sides of the housing 11. Because the filter element body 15 is sealed with the limiting ring 14 and the limiting seat 20 by annular sealing rings 24, and the upper and lower ends of the filter element body 15 are sealed by elastic sealing rings 24... The sealing ring 22 seals with the upper sealing groove 13 and the lower sealing groove 21, preventing air from flowing directly through the gap between the filter element body 15 and the housing 11. Instead, air flows towards the outer wall of the filter element body 15, forcing it to pass through the filter material (such as the HEPA layer and activated carbon layer) of the filter element body 15. Particulate matter, harmful gases, and other pollutants are intercepted or adsorbed, achieving air purification. The filtered clean air flows upward from the inside of the filter element body 15, enters the air outlet 27 through the air outlet 12 at the top of the housing 11, and is finally discharged through the air outlet 30 on the front surface of the protective housing 29 under the drive of the fan 28. During equipment handling or transportation, if subjected to vibration, the filter element body 15 may experience slight displacement. However, the elastic deformation of the limiting spring 19 can compensate for the displacement in real time. The limiting spring 19 continuously applies an upward preload to the filter element body 15 through the limiting seat 20, ensuring that the elastic sealing ring 22 is always tightly fitted with the corresponding sealing groove, avoiding the appearance of sealing gaps due to vibration, preventing unfiltered air leakage, and ensuring stable filtration effect. When the filter element needs to be replaced, rotate the cross knob 25 in the opposite direction to drive the limiting cover 17 to rotate downward along the mounting hole 16. The pressure of the limiting spring 19 is released, and the limiting seat 20 moves down accordingly, releasing the top clamping force on the filter element body 15. Take out the old filter element from the mounting hole 16, and put the new filter element in the original position, so that the upper part of the filter element is aligned with the limiting ring 14 and the lower part is aligned with the limiting seat 20.Rotate the cross knob 25 clockwise. The limiting cover 17 moves upward and compresses the limiting spring 19 again, pressing the new filter element against the limiting seat 20 until the elastic sealing ring 22 and the annular sealing ring 24 are fully embedded in the corresponding sealing structure, restoring the multi-seal state and completing the replacement.

[0035] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A filter cartridge seal structure, characterized by: The housing includes a shell (11), with an air outlet (12) at the center of the inner top wall of the shell (11). An upper sealing groove (13) is formed on the outer side of the inner top wall of the shell (11) near the air outlet (12). A limiting ring (14) is fixedly connected to the outer side of the inner top wall of the shell (11) near the upper sealing groove (13). A filter element body (15) is attached to the inner side wall of the limiting ring (14). An installation hole (16) is formed at the center of the lower surface of the shell (11). A limiting cover (17) is threaded to the inner side wall of the installation hole (16). A limiting groove (18) is formed on the outer side of the upper surface of the limiting cover (17). A limiting spring (19) is rotatably connected to the inner sidewall of the filter element body (15). A limiting seat (20) is fixedly connected to the top of the limiting spring (19). The outer sidewall of the limiting seat (20) is attached to the upper part of the inner sidewall of the mounting hole (16). A lower sealing groove (21) is provided on the outer side of the inner bottom wall of the limiting seat (20). The lower part of the outer sidewall of the filter element body (15) is attached to the inner sidewall of the limiting seat (20). An elastic sealing ring (22) is fixedly connected to the outer side of both the upper and lower surfaces of the filter element body (15). The outer sides of the two elastic sealing rings (22) that are far apart are attached to the inner sidewalls of the upper sealing groove (13) and the lower sealing groove (21), respectively.

2. The filter cartridge seal arrangement of claim 1, wherein: The filter element body (15) has an annular groove (23) on the upper and lower parts of its outer sidewall. The inner sidewalls of the two annular grooves (23) are fixedly connected with an annular sealing ring (24). The outer sidewalls of the two annular sealing rings (24) are respectively attached to the middle of the inner bottom wall of the limiting ring (14) and the limiting seat (20).

3. The filter cartridge seal arrangement of claim 1 wherein: A cross knob (25) is fixedly connected to the center of the lower surface of the limiting cover (17).

4. The filter cartridge seal arrangement of claim 1 wherein: Multiple air inlets (26) are provided on both sides of the housing (11).

5. The filter cartridge seal arrangement of claim 4 wherein: An air outlet pipe (27) is provided on the outer side of the upper surface of the housing (11) near the air outlet (12), and a fan (28) is fixedly connected to the outer wall of the air outlet pipe (27).

6. The filter cartridge seal arrangement of claim 5 wherein: A protective shell (29) is fixedly connected to the outer side of the upper surface of the housing (11). An air outlet (30) is provided at the center of the front surface of the protective shell (29). The air outlet of the fan (28) is connected to the air outlet (30).

7. The filter cartridge seal arrangement of claim 6 wherein: The inner wall of the air outlet (30) is provided with an adjustable louvered grille (31).

8. The filter cartridge seal arrangement of claim 1 wherein: Multiple support feet (32) are fixedly connected to the outer side of the lower surface of the housing (11), and anti-slip pads (33) are fixedly connected to the bottom of each of the multiple support feet (32).

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