Filtering structure for air detection

Abstract

The utility model discloses a filter structure for air detection, which comprises a filter cartridge, a flow guide block is fixedly connected in the filter cartridge, and the left side of the flow guide block is provided with a through hole. A flow guide block is arranged in the filter cartridge, and a plurality of uniformly distributed rectangular through holes are formed in the left side of the filter cartridge. According to the design, air entering the filter cartridge can be uniformly dispersed under the action of the flow guide block, so that the problem of overlarge local pressure caused by non-uniform air flow distribution of an existing filter structure is effectively solved, the resistance of the air passing through the filter structure is reduced, the air flow is increased, and the working efficiency of the detection equipment is further guaranteed. Meanwhile, the efficient filter plate in sliding connection with the interior of the filter cartridge can be conveniently and forwards pulled through a handle, the efficient filter plate can be rapidly mounted and dismounted without the help of tools in cooperation with a clamping frame rotationally connected to a fixing block and the elastic effect of a torsional spring, and the device has the advantage of being convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of air detection technology, specifically to a filter structure for air detection. Background Technology

[0002] With rapid industrial development and accelerated urbanization, air quality has become an increasingly important concern. Air quality testing is a crucial means of understanding air quality, and filtration is a vital component in this process. Its function is to remove impurities and pollutants from the air, ensuring that the air entering the testing equipment is representative, thereby guaranteeing the accuracy and reliability of the test results.

[0003] Existing air quality testing filters typically use filter plates for filtration, which are often secured with bolts. While this method is simple, in practice, operators need to use a screwdriver to remove the bolts, a cumbersome process that hinders quick cleaning of the filter plates. Furthermore, existing filters have deficiencies in airflow distribution. Uneven airflow after entering the filter can lead to excessive local pressure, increasing resistance to airflow and reducing air volume, thus affecting the efficiency of the testing equipment. Therefore, a redesign of the air quality testing filter structure is needed to effectively prevent these inconveniences. Utility Model Content

[0004] To address the problems mentioned in the background art, the purpose of this utility model is to provide an air detection filter structure that is easy to use.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an air detection filter structure, comprising a filter cylinder, a flow guide block fixedly connected inside the filter cylinder, a rectangular opening on the left side of the flow guide block, the openings being evenly distributed on the left side of the flow guide block, a high-efficiency filter plate slidably connected inside the filter cylinder, the front of the high-efficiency filter plate extending to the front of the filter cylinder and fixedly connected to a handle, locking frames fixedly connected to the top and bottom of the front of the high-efficiency filter plate, fixing blocks fixedly connected to both sides of the top and bottom of the filter cylinder, a snap-fit ​​frame rotatably connected inside the fixing block, the snap-fit ​​frame fitting against the locking frame, a torsion spring fixedly connected to the surface of the fixing block, the other end of the torsion spring fixedly connected to the snap-fit ​​frame, and docking mounting frames fixedly connected to both sides of the surface of the filter cylinder, the surface of the docking mounting frames having mounting openings, the number of mounting openings being evenly distributed.

[0006] As a preferred embodiment of the present invention, the top and bottom of the filter cylinder are provided with sliding grooves, and a limiting frame is slidably connected inside the sliding groove. The limiting frame is fitted with a locking frame, and a lever is fixedly connected to the surface of the limiting frame.

[0007] As a preferred embodiment of this utility model, a first magnet is fixedly connected to both the front and back of the limiting frame, a second magnet is fixedly connected to the surface of the filter cylinder, the second magnet is located to the left of the first magnet, and a third magnet is fixedly connected to the surface of the filter cylinder, the third magnet is located to the right of the first magnet.

[0008] As a preferred embodiment of this utility model, both sides of the inside of the filter cylinder are fixedly connected to limit frames, and a first sealing ring is fixedly connected to one side of each adjacent limit frame. The first sealing ring is in contact with the high-efficiency filter plate and is fixedly connected to the filter cylinder.

[0009] As a preferred embodiment of the present invention, the front side of the filter cylinder is provided with a groove, and a second sealing ring is fixedly connected inside the groove, the second sealing ring being in contact with the high-efficiency filter plate.

[0010] As a preferred embodiment of this utility model, a guide block is fixedly connected to the front of the filter cylinder, and the number of guide blocks is several. A protective frame is fixedly connected to the top and bottom of the filter cylinder, and the number of protective frames is several.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model employs a filter cylinder with an internal guide block and several evenly distributed rectangular openings on its left side. This design allows the air entering the filter cylinder to be evenly dispersed under the action of the guide block, effectively solving the problem of uneven airflow distribution leading to excessive local pressure in existing filter structures. It reduces the resistance of air passing through the filter structure, increases airflow, and thus ensures the working efficiency of the testing equipment. Simultaneously, the high-efficiency filter plate, which is slidably connected inside the filter cylinder, can be easily pulled forward using a handle. Combined with the rotating snap-fit ​​bracket on the fixing block and the elasticity of the torsion spring, the high-efficiency filter plate can be quickly installed and removed without tools, avoiding the cumbersome operation of traditional bolt fixing methods. This greatly facilitates the operator's rapid cleaning and maintenance of the filter plate, fully demonstrating the convenience advantage of the device. This device is easy to use.

[0013] 2. This utility model features a limiting frame that slides within grooves at the top and bottom of the filter cylinder. The limiting frame is in contact with the locking frame, and a lever is fixed to its surface. Moving the lever allows the limiting frame to slide within the grooves, thus limiting or releasing the locking frame. Once the high-efficiency filter plate is in place, sliding the limiting frame to engage with the locking frame effectively prevents accidental rotation of the locking frame due to vibration or other factors during equipment operation. This ensures the high-efficiency filter plate remains in a stable, fixed state, avoiding the potential decrease in filtration efficiency caused by loose filter plates. This further enhances the reliability and stability of the device during use. The operation is simple and intuitive, requiring no complex steps, thus increasing the device's practicality. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a front sectional view of the filter cartridge structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the limiting frame and the first sealing ring of this utility model;

[0017] Figure 4 This utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle.

[0018] In the diagram: 1. Filter cartridge; 2. Flow guide block; 3. Inlet; 4. High-efficiency filter plate; 5. Handle; 6. Locking frame; 7. Fixing block; 8. Snap-fit ​​frame; 9. Torsion spring; 10. Limiting frame; 11. Lever; 12. First magnet; 13. Second magnet; 14. Third magnet; 15. Connecting mounting frame; 16. Mounting port; 17. Limiting frame; 18. First sealing ring; 19. Protective frame; 20. Second sealing ring; 21. Guide block. Detailed Implementation

[0019] 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.

[0020] like Figures 1 to 4As shown, an air detection filter structure includes a filter cartridge 1. A guide block 2 is fixedly connected inside the filter cartridge 1. A rectangular opening 3 is provided on the left side of the guide block 2. The openings 3 are evenly distributed on the left side of the guide block 2. A high-efficiency filter plate 4 is slidably connected inside the filter cartridge 1. The front of the high-efficiency filter plate 4 extends to the front of the filter cartridge 1 and is fixedly connected to a handle 5. Locking frames 6 are fixedly connected to the top and bottom of the front of the high-efficiency filter plate 4. Fixing blocks 7 are fixedly connected to both sides of the top and bottom of the filter cartridge 1. A snap-fit ​​frame 8 is rotatably connected inside the fixing block 7. The snap-fit ​​frame 8 fits against the locking frame 6. A torsion spring 9 is fixedly connected to the surface of the fixing block 7. The other end of the torsion spring 9 is fixedly connected to the snap-fit ​​frame 8. A docking mounting frame 15 is fixedly connected to both sides of the surface of the filter cartridge 1. The surface of the docking mounting frame 15 has a mounting opening 16. The number of mounting openings 16 is several.

[0021] refer to Figure 2 The top and bottom of the filter cartridge 1 are provided with sliding grooves, and the inside of the sliding grooves is slidably connected to the limit frame 10. The limit frame 10 is in contact with the locking frame 6, and the surface of the limit frame 10 is fixedly connected to the lever 11.

[0022] As a technical optimization of this utility model, a limiting frame 10 is slidably connected within the sliding grooves provided at the top and bottom of the filter cylinder 1, and the limiting frame 10 is in contact with the locking frame 6. A lever 11 is also fixed to its surface. By moving the lever 11, the limiting frame 10 can slide within the sliding groove, thereby limiting or releasing the locking frame 6. When the high-efficiency filter plate 4 is installed in place, the sliding limiting frame 10 is made to fit against the locking frame 6, which can effectively prevent the locking frame 8 from rotating unexpectedly due to vibration or other factors during equipment operation, ensuring that the high-efficiency filter plate 4 is always in a stable fixed state. This avoids the problem of reduced filtration effect that may be caused by the filter plate loosening, further improving the reliability and stability of the device during use. The operation process is simple and intuitive, requiring no complicated steps, thus enhancing the practicality of the device.

[0023] refer to Figure 4 The front and back of the limiting frame 10 are fixedly connected to a first magnet 12, the surface of the filter cylinder 1 is fixedly connected to a second magnet 13, the second magnet 13 is located to the left of the first magnet 12, and the surface of the filter cylinder 1 is fixedly connected to a third magnet 14, the third magnet 14 is located to the right of the first magnet 12.

[0024] As a technical optimization of this utility model, a first magnet 12 is fixed to the front and back of the limiting frame 10, and a second magnet 13 and a third magnet 14 are fixed to corresponding positions on the surface of the filter cylinder 1. When the limiting frame 10 slides to different positions, the first magnet 12 will generate a magnetic attraction force with the second magnet 13 or the third magnet 14 respectively, thereby firmly fixing the limiting frame 10 in the corresponding position. This magnetic fixing method can effectively prevent the limiting frame 10 from shifting due to external forces during equipment operation, ensuring the continuous and stable limiting effect on the locking frame 6, and thus ensuring the installation stability of the high-efficiency filter plate 4. Even when used in environments with large vibrations, this structure can reliably maintain the fixed state of the filter plate, reducing the risk of equipment failure due to the failure of the limiting structure, and improving the overall durability and safety of the device.

[0025] refer to Figure 3 Both sides of the filter cartridge 1 are fixedly connected to limit frames 17, and a first sealing ring 18 is fixedly connected to the adjacent side of the two limit frames 17. The first sealing ring 18 is in contact with the high-efficiency filter plate 4 and is fixedly connected to the filter cartridge 1.

[0026] As a technical optimization of this utility model, the limiting frames 17 fixed on both sides inside the filter cylinder 1 can accurately position the high-efficiency filter plate 4, ensuring that the high-efficiency filter plate 4 is accurately positioned in the predetermined position of the filter cylinder 1 during installation, avoiding displacement or tilting, thereby ensuring the uniformity and effectiveness of the entire filtration process. Simultaneously, the first sealing ring 18 fixed on the limiting frame 17 fits tightly with the high-efficiency filter plate 4, effectively preventing unfiltered air from bypassing the connection between the filter plate and the filter cylinder 1, forming a good sealing effect, ensuring that all air to be tested must pass through the high-efficiency filter plate 4, thereby improving the accuracy and reliability of air detection. Furthermore, the elastic fit of the first sealing ring 18 can also reduce friction between the filter plate and the limiting frame 17 to a certain extent, extending the service life of both the filter plate and the limiting frame 17.

[0027] refer to Figure 1 The front of the filter cartridge 1 is provided with a groove, and a second sealing ring 20 is fixedly connected inside the groove. The second sealing ring 20 is in contact with the high-efficiency filter plate 4.

[0028] As a technical optimization of this utility model, a second sealing ring 20 is fixed in a groove on the front of the filter cylinder 1. This sealing ring fits tightly against the front of the high-efficiency filter plate 4, further enhancing the sealing performance between the filter cylinder 1 and the high-efficiency filter plate 4. Especially at the connection point on the front of the filter cylinder 1, it effectively prevents air leakage from this location, ensuring good sealing of the entire filter structure. Good sealing performance is an important prerequisite for ensuring accurate air detection results, avoiding interference from leakage of unfiltered external air or filtered internal air. At the same time, the groove design also provides guidance and positioning for the installation of the high-efficiency filter plate 4, allowing the filter plate to be more accurately aligned with the filter cylinder 1 during insertion, reducing adjustment time during installation, improving installation efficiency, and further demonstrating the rationality and practicality of the device's structural design.

[0029] refer to Figure 1 A guide block 21 is fixedly connected to the front of the filter cylinder 1. There are several guide blocks 21. A protective frame 19 is fixedly connected to the top and bottom of the filter cylinder 1. There are several protective frames 19.

[0030] As a technical optimization of this utility model, the guide blocks 21 fixed to the front of the filter cylinder 1 guide the high-efficiency filter plate 4 during insertion into the filter cylinder 1, ensuring that the filter plate slides smoothly in the correct direction and avoiding jamming or tilting caused by insertion angle deviation. This makes the installation process of the filter plate smoother and more convenient, reduces the installation difficulty for operators, and improves operating efficiency. Meanwhile, the protective frames 19 fixed to the top and bottom of the filter cylinder 1 protect the key parts of the filter cylinder 1 to a certain extent, effectively preventing collisions or compression from external objects, reducing the risk of deformation or damage to the filter cylinder 1 due to accidental impacts, and extending the overall service life of the device. Furthermore, the multiple guide blocks 21 and protective frames 19 enhance the structural strength and stability of the filter cylinder 1, enabling it to better adapt to different installation environments and usage conditions, thus improving the durability and reliability of the device.

[0031] The working principle and usage process of this utility model are as follows: When using this air detection filter structure, when installing the high-efficiency filter plate 4, hold the handle 5 and slowly insert it from the front of the filter cylinder 1. Guided by the limiting frames 17 on both sides inside the filter cylinder 1, slide the high-efficiency filter plate 4 into the predetermined position inside the filter cylinder 1. At this time, the locking frame 6 on the front of the high-efficiency filter plate 4 is aligned with the fixing blocks 7 on the top and bottom sides of the filter cylinder 1. Release the snap-fit ​​bracket 8, and under the action of the torsion spring 9, the snap-fit ​​bracket 8 rotates until the snap-fit ​​bracket 8 is in contact with the locking frame 6, thereby limiting the locking frame 6 to the front and back, preventing the high-efficiency filter plate 4 from sliding to the front. Utilizing the elasticity of the torsion spring 9 on the surface of the fixing block 7, the snap-fit ​​bracket 8 will automatically apply pressure to tightly fasten the locking frame 6, completing the initial fixation. To further ensure that the high-efficiency filter plate 4 will not loosen due to vibration or other factors during equipment operation, push the lever 11 on the surface of the limit frame 10 to move the limit frame 10 to the right, so that the limit frame 10 slides in the grooves at the top and bottom of the filter cylinder 1 until the limit frame 10 is in contact with the locking frame 6. At this time, the first magnet 12 on the front and back of the limit frame 10 will move away from the second magnet 13 and then move closer to the third magnet 14. When the first magnet 12 is close to the second magnet 13 or the third magnet 14, there is a magnetic attraction force, which firmly fixes the limit frame 10 in the limit position, forming a double limit protection for the locking frame 6.

[0032] During equipment operation and testing, the air to be tested enters from the left inlet of the filter cartridge 1. It first passes through the guide block 2, where evenly distributed rectangular openings 3 on the left side disperse the airflow, ensuring that the air enters the filter cartridge 1 uniformly from multiple openings 3. This prevents excessive local pressure, reduces air resistance, and ensures stable airflow. The evenly dispersed airflow then passes through the high-efficiency filter plate 4, where impurities and pollutants are filtered and intercepted. The filtered air then enters the testing equipment from the right outlet of the filter cartridge 1, ensuring that the air entering the testing equipment is representative and guaranteeing the accuracy and reliability of the test results. Through the connection of the mounting frame 15 and the mounting port 16, the operator can use bolts to connect the filter cartridge 1 to the external air inlet pipe and the inlet of the external air testing equipment. The aforementioned external air testing equipment is a common existing technology and is common knowledge to those skilled in the art; therefore, it will not be described in detail here. The external air testing equipment is not shown.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An air detection filter structure, comprising a filter cartridge (1), characterized in that: The filter cylinder (1) is fixedly connected to a flow guide block (2). The flow guide block (2) has an opening (3) on its left side. The opening (3) is rectangular and there are several openings (3). The openings (3) are evenly distributed on the left side of the flow guide block (2). The filter cylinder (1) is slidably connected to a high-efficiency filter plate (4). The front of the high-efficiency filter plate (4) extends to the front of the filter cylinder (1) and is fixedly connected to a handle (5). The top and bottom of the front of the high-efficiency filter plate (4) are fixedly connected to locking frames (6). The filter cylinder (1) has fixed blocks (7) on both sides of the top and bottom. The fixed blocks (7) are rotatably connected to the inside of the fixed blocks (7). The fixed blocks (7) are in contact with the locking frame (6). The surface of the fixed blocks (7) is fixedly connected to the torsion spring (9). The other end of the torsion spring (9) is fixedly connected to the fixed block (8). The filter cylinder (1) has docking mounting frames (15) on both sides of the surface. The surface of the docking mounting frames (15) is provided with mounting holes (16). The number of mounting holes (16) is several.

2. The air detection filter structure according to claim 1, characterized in that: The filter cylinder (1) is provided with a sliding groove at the top and bottom, and a limit frame (10) is slidably connected inside the sliding groove. The limit frame (10) is in contact with the locking frame (6), and a lever (11) is fixedly connected to the surface of the limit frame (10).

3. The air detection filter structure according to claim 2, characterized in that: The front and back of the limiting frame (10) are fixedly connected to a first magnet (12), the surface of the filter cylinder (1) is fixedly connected to a second magnet (13), the second magnet (13) is located to the left of the first magnet (12), and the surface of the filter cylinder (1) is fixedly connected to a third magnet (14), the third magnet (14) is located to the right of the first magnet (12).

4. The air detection filter structure according to claim 1, characterized in that: Both sides of the filter cylinder (1) are fixedly connected to limit frames (17), and a first sealing ring (18) is fixedly connected to the adjacent side of the two limit frames (17). The first sealing ring (18) is in contact with the high-efficiency filter plate (4), and the first sealing ring (18) is fixedly connected to the filter cylinder (1).

5. The air detection filter structure according to claim 1, characterized in that: The filter cylinder (1) has a groove on its front side, and a second sealing ring (20) is fixedly connected inside the groove. The second sealing ring (20) is in contact with the high-efficiency filter plate (4).

6. The air detection filter structure according to claim 1, characterized in that: The filter cylinder (1) is fixedly connected to a guide block (21) on the front side. There are several guide blocks (21). The top and bottom of the filter cylinder (1) are fixedly connected to a protective frame (19). There are several protective frames (19).

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