A gas filter with a filter element that is easy to replace

By designing an easy-to-replace snap-fit ​​structure and a combination of fan blades and scrapers, the problem of complex replacement of existing gas filter elements has been solved, enabling rapid replacement of filter elements and cleaning of the inner wall, thus improving the convenience of equipment maintenance.

CN224485347UActive Publication Date: 2026-07-14SHANDONG LANQINGYUAN PURIFICATION TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANDONG LANQINGYUAN PURIFICATION TECH CO LTD
Filing Date
2025-07-15
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

The replacement process for existing gas filter cartridges is complex and requires multiple tools, making operation inconvenient.

Method used

A gas filter with easy filter element replacement was designed. The filter element can be quickly disassembled and installed through the cooperation of the buckle and the top cover. Combined with the fan blade and scraper structure, the replacement process is simplified and dust is removed during replacement.

Benefits of technology

It enables quick filter replacement and simplifies operation, reduces reliance on tools, and effectively cleans the inner wall of the filter during replacement, improving replacement efficiency and equipment maintenance convenience.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224485347U_ABST
    Figure CN224485347U_ABST
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Abstract

The utility model relates to the field of gas filter discloses a gas filter convenient to replace filter core, including the shell, the both sides of shell top portion outside all are fixedly connected with the rotating shaft, the rotating shaft outside rotation is connected with the buckle, the buckle inside fixedly connected with the spring, the limiting board top fixedly connected with the baffle, the shell top is provided with the top, the top top fixedly connected with the fixed block, the fixed block top fixedly connected with the rotating link, the rotating link outside rotation is connected with the baffle, the top bottom fixedly connected with the screw plate, the screw plate outside thread connection has the fixed ring. In the utility model, through the baffle is not locked by the baffle down pressure, the buckle can rotate to make, both sides buckle all loosen after, take up the filter core with the top and lift, rotate the filter core and unload the filter core and replace, put back the top in the shell again, lock the buckle, realize the effect that the filter core is replaced fast.
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Description

Technical Field

[0001] This utility model relates to the field of gas filters, and more particularly to a gas filter with an easy-to-replace filter element. Background Technology

[0002] Gas filters play a vital role in many fields, including industrial production, environmental protection, and air purification. For example, in the chemical and pharmaceutical industries, they are used to remove harmful substances from exhaust gases, ensuring a safe production environment and product quality; in indoor air purification, they remove air pollutants and improve air quality.

[0003] In terms of equipment structure, cylindrical filters are a common type of gas filtration equipment. When gas enters the cylindrical filter from the inlet, it is first guided by the inner cylinder and then passes through the filter element. During this process, impurities such as particulate matter, dust, and harmful gases in the gas are intercepted and adsorbed by the filter element, thereby purifying the gas, which is then discharged from the outlet.

[0004] The filter element needs to be replaced in time after a period of use. Current gas filters use an integrated design or are fixed with bolts and nuts, which makes replacement very complicated and troublesome, requiring the use of a variety of tools. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a gas filter with an easy-to-replace filter element, aiming to improve the problem of inconvenient filter element replacement in the prior art.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a gas filter that facilitates filter element replacement, comprising a housing, an air outlet fixedly connected to the outside of the housing, rotating shafts fixedly connected to both sides of the top of the housing, a buckle rotatably connected to the outside of the rotating shaft, a limit block fixedly connected to the top of the buckle, a spring fixedly connected inside the buckle, a limit plate fixedly connected to the top of the spring, a stop block fixedly connected to the top of the limit plate, a top cover provided on the top of the housing, a fixing block fixedly connected to the top of the top cover, a rotating rod fixedly connected to the top of the fixing block, a baffle rotatably connected to the outside of the rotating rod, a threaded plate fixedly connected to the bottom of the top cover, a fixing ring threadedly connected to the outside of the threaded plate, and a filter element fixedly connected to the bottom of the fixing ring.

[0007] As a further description of the above technical solution: a rotating ring is rotatably connected inside the threaded plate, a fixed rod is fixedly connected inside the rotating ring, a rotating column is fixedly connected in the middle of the fixed rod, multiple fan blades are fixedly connected to the outside of the rotating column near the rotating ring, and multiple scrapers are alternately fixedly connected to both sides of the rotating column.

[0008] As a further description of the above technical solution: the limiting plate is slidably connected inside the buckle, and the buckle abuts against the outside of the fixing block.

[0009] As a further description of the above technical solution: the baffle abuts against the left side of the limiting block, and the baffle abuts against the right side of the blocking block.

[0010] As a further description of the above technical solution: the filter element abuts against the bottom wall inside the housing, and the top cover is fixedly connected to an air inlet.

[0011] As a further description of the above technical solution: the top cover abuts against the bottom of the buckle.

[0012] As a further description of the above technical solution: the scraper is slidably connected inside the filter element.

[0013] As a further description of the above technical solution: the rotating column is rotatably connected to the bottom wall inside the outer shell.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, when the filter element needs to be replaced, the baffle is pressed down, the baffle is no longer locked, the baffle is rotated so that the buckle can be rotated, after the buckles on both sides are fully released, the top cover is lifted to lift the filter element, the filter element is rotated to remove and replace the filter element, and then the replaced filter element and the top cover are put back into the outer shell and the buckle is locked, achieving the effect of quick filter element replacement without the need for the assistance of tools, which is relatively fast;

[0016] 2. In this utility model, air enters the filter element through the air inlet. When the air passes through the fan blades, it drives the rotating column to rotate. The rotation of the rotating column drives the scraper fixed on the rotating column to rotate. The scraper rotates with the rotation and is slidably connected to the inner wall of the filter element. Therefore, when the scraper rotates, it can achieve the effect of dust removal from the inner wall of the filter element. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of a gas filter with an easy-to-replace filter element proposed in this utility model;

[0018] Figure 2 This is a schematic diagram of the internal cross-section of a gas filter that facilitates filter element replacement, as proposed in this utility model.

[0019] Figure 3 This is a schematic diagram of the fan blade structure of a gas filter that facilitates filter element replacement, as proposed in this utility model.

[0020] Figure 4 This is a schematic diagram of the snap-fit ​​structure of a gas filter that facilitates filter element replacement, as proposed in this utility model.

[0021] Figure 5 This is a schematic diagram of the spring structure of a gas filter that facilitates filter element replacement, as proposed in this utility model.

[0022] Legend: 1. Outer shell; 2. Air outlet; 3. Top cover; 4. Rotating shaft; 5. Buckle; 6. Air inlet; 7. Rotating rod; 8. Baffle; 9. Filter element; 10. Fixing ring; 11. Rotating column; 12. Scraper; 13. Fan blade; 14. Fixing rod; 15. Rotating ring; 16. Threaded plate; 17. Stop block; 18. Limiting plate; 19. Spring; 20. Fixing block; 21. Limiting block. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Reference Figure 1 , Figure 4 , Figure 5 This utility model provides an embodiment of a gas filter that facilitates filter element replacement, comprising a housing 1, an air outlet 2 fixedly connected to the outside of the housing 1, rotating shafts 4 fixedly connected to both sides of the top of the housing 1, buckles 5 rotatably connected to the outside of the rotating shafts 4, a limiting block 21 fixedly connected to the top of the buckles 5, a spring 19 fixedly connected inside the buckles 5, a limiting plate 18 fixedly connected to the top of the spring 19, a stop block 17 fixedly connected to the top of the limiting plate 18, a top cover 3 provided on the top of the housing 1, a fixing block 20 fixedly connected to the top of the top cover 3, and a fixing block 20 fixedly connected to the top of the fixing block 20. A rotating rod 7 is connected to a baffle 8, which is rotatably connected to the outside of the rotating rod 7. A threaded plate 16 is fixedly connected to the bottom of the top cover 3. A fixing ring 10 is threadedly connected to the outside of the threaded plate 16. A filter element 9 is fixedly connected to the bottom of the fixing ring 10. When the filter element 9 needs to be replaced, the stop block 17 is pressed down, and the baffle 8 is no longer locked. The baffle 8 is rotated so that the buckle 5 can rotate. After both buckles 5 are fully released, the top cover 3 is lifted to lift the filter element 9. The filter element 9 is rotated to remove and replace it. The replaced filter element 9 and the top cover 3 are then put back into the outer shell 1, and the buckle 5 is locked, achieving the effect of quickly replacing the filter element 9.

[0025] Reference Figure 2 , Figure 3A rotating ring 15 is rotatably connected inside the threaded plate 16. A fixed rod 14 is fixedly connected inside the rotating ring 15. A rotating column 11 is fixedly connected in the middle of the fixed rod 14. Multiple fan blades 13 are fixedly connected to the outside of the rotating column 11 near the rotating ring 15. Multiple scrapers 12 are alternately fixedly connected to both sides of the rotating column 11. Air enters the filter element 9 through the air inlet 6. When the air passes through the fan blades 13, it drives the rotating column 11 to rotate. The rotation of the rotating column 11 drives the scrapers 12 fixed on the rotating column 11 to rotate. The scrapers 12 follow the rotation. The scrapers 12 are slidably connected to the inner wall of the filter element 9. Therefore, when the scrapers 12 rotate, the dust removal effect on the inner wall of the filter element 9 can be achieved.

[0026] Reference Figure 2 , Figure 3 , Figure 4 The limiting plate 18 is slidably connected inside the buckle 5. The buckle 5 is made of alloy material, providing good locking strength. The buckle 5 abuts against the outside of the fixing block 20. The baffle 8 abuts against the left side of the limiting block 21. The baffle 8 is made of alloy material, providing good strength. The baffle 8 abuts against the right side of the stop block 17. The filter element 9 abuts against the bottom wall inside the outer shell 1. The bottom wall of the outer shell 1 is made of rubber material, protecting the filter element 9 from being damaged. The top cover 3 is fixedly connected to the air inlet 6. The top cover 3 abuts against the bottom of the buckle 5. The scraper 12 is slidably connected inside the filter element 9. The scraper 12 is made of rubber material, protecting the inner wall of the filter element 9 from being damaged. The rotating column 11 is rotatably connected to the bottom wall inside the outer shell 1.

[0027] Working principle: When the filter element 9 needs to be replaced, press down the stop block 17, and the baffle 8 will no longer be locked. Rotate the baffle 8 to align with the fixing block 20, so that the buckle 5 can rotate. After both buckles 5 are fully released, lift the top cover 3. The top cover 3 is fixedly connected to the threaded plate 16, and the fixing ring 10 is threadedly connected to the threaded plate 16. Therefore, the filter element 9 can be lifted. Rotate the filter element 9 to remove and replace it. Then put the replaced filter element 9 and the top cover 3 back into the outer shell 1 and lock the buckle 5 to achieve the effect of quickly replacing the filter element 9.

[0028] When dust removal is required for filter element 9, air enters the interior of housing 1 through air inlet 6. When the air passes through fan blade 13, it causes fan blade 13 to rotate. Fan blade 13 is fixedly connected to rotating column 11, so fan blade 13 drives rotating column 11 to rotate. Rotation of rotating column 11 drives scraper 12 fixed on rotating column 11. Scraper 12 rotates with it. Scraper 12 is slidably connected to the inner wall of filter element 9, so when scraper 12 rotates, it can achieve the effect of dust removal from the inner wall of filter element 9.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A gas filter with an easy-to-replace filter element, comprising a housing (1), characterized in that: An air outlet (2) is fixedly connected to the outside of the outer shell (1). Rotating shafts (4) are fixedly connected to both sides of the top of the outer shell (1). A buckle (5) is rotatably connected to the outside of the rotating shaft (4). A limit block (21) is fixedly connected to the top of the buckle (5). A spring (19) is fixedly connected inside the buckle (5). A limit plate (18) is fixedly connected to the top of the spring (19). A stop block (17) is fixedly connected to the top of the limit plate (18). A top cover (3) is provided on the top of the outer shell (1). A fixing block (20) is fixedly connected to the top of the top cover (3). A rotating rod (7) is fixedly connected to the top of the fixing block (20). A baffle (8) is rotatably connected to the outside of the rotating rod (7). A threaded plate (16) is fixedly connected to the bottom of the top cover (3). A fixing ring (10) is threadedly connected to the outside of the threaded plate (16). A filter element (9) is fixedly connected to the bottom of the fixing ring (10).

2. A gas filter with an easily replaceable filter element according to claim 1, characterized in that: The threaded plate (16) is rotatably connected to a rotating ring (15), and a fixed rod (14) is fixedly connected inside the rotating ring (15). A rotating column (11) is fixedly connected in the middle of the fixed rod (14). Multiple fan blades (13) are fixedly connected to the outside of the rotating column (11) near the rotating ring (15). Multiple scrapers (12) are alternately fixedly connected to both sides of the rotating column (11).

3. A gas filter with an easily replaceable filter element according to claim 1, characterized in that: The limiting plate (18) is slidably connected inside the buckle (5), and the buckle (5) abuts against the outside of the fixing block (20).

4. A gas filter with an easily replaceable filter element according to claim 1, characterized in that: The baffle (8) abuts against the left side of the limiting block (21) and the baffle (8) abuts against the right side of the stop block (17).

5. A gas filter with an easily replaceable filter element according to claim 1, characterized in that: The filter element (9) abuts against the bottom wall inside the outer shell (1), and the top cover (3) is fixedly connected to the air inlet (6).

6. A gas filter with an easily replaceable filter element according to claim 1, characterized in that: The top cover (3) abuts against the bottom of the buckle (5).

7. A gas filter with an easily replaceable filter element according to claim 2, characterized in that: The scraper (12) is slidably connected inside the filter element (9).

8. A gas filter with an easily replaceable filter element according to claim 2, characterized in that: The rotating column (11) is rotatably connected to the bottom wall inside the outer shell (1).