Filter and air filter demonstration device

Abstract

The utility model provides a filter piece and air filter demonstration device, wherein filter piece includes: first frame, one side of first frame is open -mouthed; Second frame, second frame is detachably connected with first frame, and second frame is assembled in the open -mouthed side of first frame, first frame and second frame constitute closed frame; Filter core, filter core is assembled in the closed frame based on first frame and second frame; Make the installation and the replacement process of filter core more simple and fast, and the user can replace different types of filter core according to the need, need not complex tool or operating procedure. At the same time, this structure also improves the overall strength and stability of filter piece, ensures the reliability of filtration effect.

Description

Technical Field

[0001] This utility model relates to the field of air purification technology, specifically to a filter element and an air filtration demonstration device. Background Technology

[0002] In many fields, such as automobiles and industrial workshops, the performance of air filtration devices is crucial, and visually demonstrating their filtration effect is a key step in evaluating and selecting suitable filters. Existing air demonstration devices often use simple slots or spring clips to fix the filter elements, requiring both hands to pry open the clips during installation and removal, making it difficult to control the force and easily damaging the frame. Positioning relies solely on stepped surfaces without any foolproof design, often resulting in misalignment and gaps, leading to bypass smoke leakage, a false reduction in filtration area, and distorted comparison results. Furthermore, one slot type can only accommodate one thickness, and changing to different brands of filters requires replacing the entire bracket, resulting in poor versatility and low maintenance efficiency on production lines and at exhibition sites.

[0003] Therefore, how to effectively fix the filter element and improve display efficiency is a technical problem that urgently needs to be solved. Utility Model Content

[0004] The problem solved by this utility model is to provide a filter element and an air filtration demonstration device that enables the replacement of different types of filter elements without complicated tools or operating procedures, ensuring the reliability of the filtration effect.

[0005] To solve the above problems, this utility model provides a filter element, comprising: a first frame, one side of which is open; a second frame, which is detachably connected to the first frame and is assembled on the open side of the first frame, the first frame and the second frame forming a closed frame; and a filter element, which is assembled within the closed frame formed by the first frame and the second frame.

[0006] Optionally, the second frame is snapped together with the first frame.

[0007] Optionally, the first border includes: a first side frame and a second side frame disposed opposite to each other, and a middle frame connecting the first side frame and the second side frame respectively; the first side frame and the second side frame are disposed in parallel, and the middle frame is perpendicular to the first side frame and the second side frame respectively.

[0008] Optionally, the first side frame, the second side frame, and the middle frame are an integral structure.

[0009] Optionally, the middle frame edge has an extended border, on which a handle is fitted.

[0010] Optionally, the middle frame has a through hole that communicates with the closed frame.

[0011] Optionally, after the second border is connected to the first border, the second border is set parallel to the middle frame.

[0012] Optionally, the first frame has a first slot on its inner side, and the edge of the filter element is confined within the first slot. The second frame has a second slot on its inner side, and after the second frame is connected to the first frame, the edge of the filter element is also confined within the second slot.

[0013] Optionally, the first side frame and the second side frame can be retracted.

[0014] Optionally, it also includes a handle component, which is connected to the first frame.

[0015] Optionally, it also includes a supplementary side frame, which has two opposite ends. One end of the supplementary side frame is detachably connected to the first frame, and the other end of the supplementary side frame is detachably connected to the second frame. The supplementary side frame has a slot.

[0016] Optionally, the supplementary side frame includes a first sub-supplementary side frame and a second sub-supplementary side frame. The first sub-supplementary side frame has an axial sliding groove on the opposite surface of the slot. The second sub-supplementary side frame has an integrally formed axial rib in the corresponding slot. The rib is embedded in the sliding groove to form a retractable sliding pair. The end of the second sub-supplementary side frame is provided with a locking sleeve. After the locking sleeve is rotated, it radially presses the first sub-supplementary side frame, so that the first sub-supplementary side frame and the second sub-supplementary side frame are fixed at any extended position.

[0017] This utility model provides an air filtration demonstration device, comprising: at least two of the above-mentioned filter elements; a housing element having a receiving cavity inside, at least a portion of the housing element being transparent, the filter element being placed inside the receiving cavity, and each of the filter elements being able to independently filter the generated smoke.

[0018] It also includes: a smoke generator, which is loaded with a smoke sample that generates smoke, and after the smoke generator is assembled into the housing, the smoke sample is placed in the receiving cavity; at least two smoke exhausters, which are used to exhaust the smoke filtered by the filter to the outside of the housing, and the smoke exhausters are located on the housing and correspond to the filter.

[0019] Optionally, the filter element is assembled in an inclined manner within the housing component, and the angle between the sidewall of the filter element and the horizontal plane containing the bottom of the housing component ranges from 30° to 90°.

[0020] Optionally, the number of filter elements is two, and the two filter elements are arranged on opposite sides of the housing; the distance between the tops of the oppositely arranged filter elements is smaller than the distance between the bottoms.

[0021] Optionally, the filter element is detachably connected to the housing element.

[0022] Optionally, the filter element is slidably connected to or snap-fitted to the housing element.

[0023] Optionally, the smoke exhaust component is fixedly connected to or detachably connected to the side wall of the housing component.

[0024] Optionally, the housing component may have a trapezoidal or rectangular structure.

[0025] Optionally, a buffer gap is provided between the smoke exhaust component and the filter component.

[0026] Optionally, the housing includes a top surface located above the smoke generator and side surfaces connected around the top surface, the top surface and the side surfaces surrounding the receiving cavity, the receiving cavity having an opening, the smoke generator being detachably covered by the opening, the filter element of the filter being placed in the receiving cavity, the side surface near the filter being distributed parallel to the filter, and the smoke exhaust element being distributed parallel to the corresponding filter.

[0027] Optionally, the top surface includes a main surface parallel to the horizontal plane and a first folded surface and a second folded surface located on both sides of the main surface. There is a first included angle between the first folded surface and the main surface, and a second included angle between the second folded surface and the main surface. The first folded surface and the second folded surface each have an insertion port that passes through the receiving cavity. The filter element is placed in the receiving cavity through the insertion port. The insertion port and the filter element form a sealed connection. The number of insertion ports corresponds one-to-one with the number of filter elements.

[0028] Optionally, the smoke generator is located at the lower end of the housing.

[0029] Optionally, the smoke generator is located between the filters, and the smoke generator includes a cigarette lighter for igniting the smoke sample; the cigarette lighter is an electronic cigarette lighter.

[0030] Optionally, the housing component is made of a transparent material.

[0031] Optionally, the surface of the housing on which the smoke exhaust component is mounted is arranged at an angle to the horizontal plane where the bottom of the housing is located, and the surface of the housing on which the smoke exhaust component is mounted is perpendicular to the visual observation direction.

[0032] Compared with the prior art, the technical solution of this utility model has the following advantages:

[0033] In the technical solution of the filter element of this utility model, one side of the first frame is open, and the second frame is detachably connected to the first frame and is fitted onto the open side of the first frame. The first and second frames form a closed frame, and the filter element is fitted within the closed frame formed by the first and second frames. This design makes the installation and replacement of the filter element simpler and faster, allowing users to quickly replace different types of filter elements as needed without complicated tools or operating procedures. At the same time, this structure also improves the overall strength and stability of the filter element, ensuring the reliability of the filtration effect. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the air filtration demonstration device in one embodiment of the present invention;

[0035] Figure 2 This is an exploded view of the air filtration demonstration device in one embodiment of the present invention;

[0036] Figure 3 for Figure 1 Cross-sectional view of AA;

[0037] Figure 4 This is an exploded view of the structure of the first and second frame borders in a filter element according to an embodiment of the present invention;

[0038] Figure 5 This is an exploded view of the structure of the first and second frame borders in the filter element in another embodiment of the present invention;

[0039] Figure 6 This is a schematic diagram of the filter element in another embodiment of the present invention;

[0040] Figure 7 This is a schematic diagram of the smoke generator in one embodiment of the present invention. Detailed Implementation

[0041] The existing air filtration demonstration device still has some problems.

[0042] Based on this, the present invention provides a filter element with one side of the first frame being open, and a second frame detachably connected to the first frame and fitted onto the open side of the first frame. The first and second frames form a closed frame, and the filter element is fitted within the closed frame formed by the first and second frames. This design makes the installation and replacement of the filter element simpler and faster, allowing users to quickly replace different types of filter elements as needed without complicated tools or operating procedures. At the same time, this structure also improves the overall strength and stability of the filter element, ensuring the reliability of the filtration effect.

[0043] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0044] Please refer to Figures 1 to 3 An air filtration demonstration device 100 includes a housing 200, a smoke generator 300, two filters 400, and two smoke exhaust devices 101.

[0045] In this embodiment, the housing 200 has a receiving cavity 200a, wherein a portion of the housing 200 is made transparent. The smoke generator 300 is loaded with a smoke sample 301 that generates smoke. After the smoke generator 300 is assembled into the housing 200, when the air filtration demonstration device 100 is in operation, the smoke sample 301 is placed in the receiving cavity 200a. The filter element 400 includes a filter cartridge, which is placed in the receiving cavity 200a. The smoke sample 301 is located in the space between adjacent filter elements 400. Each filter element 400 can independently filter the smoke generated by the smoke sample 301. The smoke exhaust element 101 is used to remove the smoke sample 301. The smoke filtered by the filter element 400 is dispersed to the outside of the housing 200. The smoke exhaust element 101 is mounted on the housing 200 and corresponds to the filter element 400. By integrating the smoke generator 300, the filter element 400, and the smoke exhaust element 101 into a single housing 200, a compact and fully functional air filtration demonstration device 100 is provided, which is easy to carry and use. Furthermore, the transparent design of part of the housing 200 allows users to intuitively observe the entire process of smoke generation and filtration, enhancing the demonstration effect. At the same time, each filter element 400 filters the smoke generated by the smoke sample 301 fairly and independently, demonstrating the filtration effect of different filters 400 and facilitating comparative analysis.

[0046] In this embodiment, there are two filter elements 400 and two smoke exhaust elements 101.

[0047] In other embodiments, the number of filter elements 400 may be 3, 4 or more, and the number of smoke exhaust elements 101 may also be 3, 4 or more, depending on actual needs.

[0048] In this embodiment, the housing 200 is made of transparent material. The transparent housing 200 allows users to clearly observe the entire filtration process inside the device, enhancing the intuitiveness of the demonstration. It is especially suitable for occasions where the filtration effect needs to be visually displayed. Furthermore, it facilitates users to monitor the operating status inside the device in real time, promptly identify and address any potential problems, and improve the reliability of the device.

[0049] In other embodiments, the surface of the housing 200 on which the smoke exhaust component 101 is mounted may be made of a transparent material, which can be set according to the user's choice.

[0050] In this embodiment, the smoke exhaust component 101 includes a fan, which can effectively exhaust the filtered smoke from the housing component 200, improving the overall operating efficiency of the device, and is especially suitable for occasions where a large amount of smoke needs to be processed quickly; in addition, the design of the fan can be optimized to reduce operating noise and improve the comfort of the device in the usage environment.

[0051] In this embodiment, one smoke exhaust component 101 corresponds to one air outlet 101a.

[0052] In this embodiment, the housing 200 includes a top surface 201 located above the smoke generator 300 and side surfaces 202 connected around the top surface 201. The top surface 201 and the side surfaces 202 surround the receiving cavity 200a, which has an opening (not marked in the figure). The smoke generator 300 is detachably covered by the opening. After the filter element of the filter element 400 is placed in the receiving cavity 200a, the side surfaces 202 near the filter element of the filter element 400 are parallel to the filter element 400. The smoke exhaust element 101 is parallel to the corresponding filter element 400.

[0053] In other embodiments, the smoke generator 300 may also be fixedly connected to the housing 200, i.e., non-detachable. In this case, the side surface 202 may be provided with an openable window for placing the smoke sample.

[0054] In this embodiment, please refer to Figure 3 The top surface 201 and side surface 202 of the housing 200 together enclose the receiving cavity 200a, providing a stable structure to ensure the stability of the entire device and prevent deformation or damage during use. At the same time, the smoke generator 300 is detachably covered by the opening, which facilitates the user to clean and replace the smoke sample 301, improving the maintenance convenience of the device and reducing cleaning time. In addition, the design of the top surface 201 and side surface 202 allows users to observe the filtration process inside the device from multiple angles, enhancing the intuitiveness of the demonstration, and is especially suitable for occasions that require multi-angle observation.

[0055] In this embodiment, the top surface 201 is V-shaped, that is, the top surface 201 includes a main surface 201b parallel to the horizontal plane and a first folded surface 201c and a second folded surface 201d located on both sides of the main surface 201b. There is a first included angle α1 (not marked in the figure) between the first folded surface 201c and the main surface 201b, and there is a second included angle α2 (not marked in the figure) between the second folded surface 201d and the main surface 201b. Both included angles α1 and α2 are acute angles. By utilizing the included angles between the first folded surface 201c and the second folded surface 201d and the main surface 201b, the side surface 202 connected to the first folded surface 201c and the second folded surface 201d can also have a certain inclination with the horizontal plane, thereby facilitating the user's visual observation.

[0056] In this embodiment, the horizontal plane is the surface on which the air filtration demonstration device is placed.

[0057] In this embodiment, the top surface 201 has an insertion port 201a that penetrates the receiving cavity 200a. The first folded surface 201c and the second folded surface 201d are respectively provided with the insertion port 201a. The filter element 400 is placed in the receiving cavity 200a through the insertion port 201a. The insertion port 201a and the filter element 400 form a sealed connection. The number of insertion ports 201a corresponds one-to-one with the number of filter elements 400. On the one hand, this can ensure the sealing between the filter element 400 and the housing 200, prevent the leakage of unfiltered smoke, and ensure the reliability of the filtration effect. On the other hand, the one-to-one correspondence between each insertion port 201a and the filter element 400 ensures the independent sealing of each filter element 400, improves the reliability of filtration, and facilitates the individual replacement and maintenance of the filter element 400. Furthermore, the design of the V-shaped bend top surface 201 and the insertion port 201a makes the installation of the filter element 400 more convenient, reduces installation time, and improves operating efficiency.

[0058] In this embodiment, handles 201e located on both sides of the top surface 201 are also included, wherein the handles 201e are through-hole structures.

[0059] In this embodiment, the handle 201e is used to facilitate the taking out of the air filtration demonstration device 100.

[0060] In this embodiment, the filter element 400 is placed inside the receiving cavity 200a and forms a sealed fit with the inner wall of the receiving cavity 200a.

[0061] In this embodiment, the smoke exhaust component 101 is assembled on the side wall of the housing component 200, and the filter element 403 of the filter element 400 is placed between the smoke exhaust component 101 and the receiving cavity 200a. The smoke exhaust component 101 is assembled on the side wall of the housing component 200 and corresponds to the filter element 403 of the filter element 400, which can reasonably arrange the airflow path to ensure that the filtered smoke can be effectively discharged. Users can also directly compare the filtration performance of different filter elements 400 by observing the odor emitted. It also helps to improve the air handling efficiency of the entire device, reduce the residence time of smoke in the housing, and ensure that the filtration effect is displayed in a timely manner. At the same time, the reasonably arranged smoke exhaust component 101 can prevent the filtered smoke from flowing back to the filter element 400, avoid secondary pollution, and ensure the reliability of the filtration effect.

[0062] In this embodiment, the surface of the housing 200 on which the smoke exhaust component 101 is installed is arranged at an angle to the horizontal plane where the bottom of the housing 200 is located, and the surface of the housing 200 on which the smoke exhaust component 101 is installed is perpendicular to the visual observation direction. This way, the user can directly observe the internal filtration status without bending over significantly, thereby reducing observation fatigue.

[0063] In this embodiment, a buffer gap 102 is provided between the smoke exhaust component 101 and the filter component 400. The buffer gap 102 between the smoke exhaust component 101 and the filter component 400 provides additional space for the filtered smoke, allowing the user to clearly observe the changes in the smoke after passing through the filter component 400, thus enhancing the demonstration effect. In addition, through the buffer gap 102, the user can intuitively compare the state of the smoke before and after filtration, better understand the filtration effect, and at the same time, the buffer gap 102 reduces the direct contact between the filter component 400 and the smoke exhaust component 101, preventing the filtered smoke from being disturbed and ensuring the accurate demonstration of the filtration effect.

[0064] In this embodiment, the filter element 400 is plate-shaped and assembled inclined to the horizontal plane within the housing 200. The sidewall of the filter element 400 forms an angle α of 30° to 90° with the horizontal plane. The inclined assembly of the filter element 400 optimizes the airflow path, allowing smoke to pass through the filter element 400 more evenly, improving filtration efficiency. Furthermore, the inclined filter element 400 increases the filtration area compared to the horizontally placed filter element 400, further improving the filtration effect and reducing the replacement frequency of the filter element 400. At the same time, the inclined design reduces the resistance of smoke in the filter element 400, allowing smoke to pass through more smoothly.

[0065] In this embodiment, the filter element 403 is plate-shaped, and the angle between it and the horizontal plane in the installed state ranges from 30° to 90°. This inclined to vertical installation state helps to increase the effective filtration area, because the inclined or vertical installation allows the plate-shaped filter element to unfold in the vertical direction, and a larger filtration area can be arranged in a unit volume, improving space utilization. At the same time, it optimizes the airflow or liquid flow distribution. The inclined angle helps to guide the fluid to pass through the filter material more evenly, reducing local high flow velocity or dead zones, avoiding "short-circuit" phenomenon, and making filtration more thorough. On the other hand, it improves the particulate matter capture efficiency: under the action of gravity, larger particles are more likely to settle or be intercepted along the inclined surface, reducing the risk of clogging and extending the filter element life. Moreover, it more accurately reflects the overall performance. This installation method avoids testing only a local area of ​​the filter element, making the performance evaluation closer to the actual operating state, and the results are more representative.

[0066] In its embodiments, the filter element 403 may also be honeycomb-shaped, cylindrical, etc.

[0067] In this embodiment, the plate-shaped filter element achieves the largest filtration area with the least air resistance in the same space, and is the easiest to process, replace and clean.

[0068] In this embodiment, the angle between the filter element 403 and the horizontal plane is the same as the angle between the side wall of the filter element 400 and the horizontal plane; this is equivalent to making the filter surface (the surface of the filter element) completely parallel to the housing guide surface (the side wall of the filter element facing the filter element): so that the airflow no longer makes small bends, the filtration angle is consistent, and the dust slides smoothly, which reduces local eddies and resistance, and makes the entire plate area uniformly dusted. The measured performance is closer to the theoretical value. During installation, it can be directly aligned with the side wall for positioning, saving brackets and reducing leakage, achieving multiple benefits.

[0069] In this embodiment, two filter elements 400 are arranged on opposite sides of the housing 200. The distance L1 between the tops of the oppositely arranged filter elements 400 is smaller than the distance L2 between the bottoms. This design provides better structural stability, prevents the filter elements 400 from shifting during use, ensures the stability of the filtration effect, and reduces the size of the air filtration demonstration device 100, making it easier to carry.

[0070] In this embodiment, the filter element 400 is detachably connected to the housing element 200. Specifically, the housing element 200 is provided with a sliding groove 203, and the side wall of the filter element 400 is provided with a small sliding groove 405 that matches the sliding groove 203. The filter element 400 and the housing element 200 achieve sliding engagement through the sliding groove 203 and the small sliding groove 405.

[0071] In other embodiments, the filter element 400 and the housing element 200 may also be snap-fitted together, etc.

[0072] In this embodiment, the filter element 400 is detachably connected to the housing 200, making the maintenance and replacement of the filter element 400 more convenient, extending the service life of the entire device, and reducing maintenance costs; and users can replace different types of the filter element 400 as needed, enhancing the applicability and flexibility of the device to adapt to different filtration needs and experimental conditions.

[0073] Please refer to Figure 2 and Figure 4 as well as Figure 6 The filter element 400 includes a first frame 401, one side of which is open; a second frame 402, which is detachably connected to the first frame 401 and is fitted onto the open side of the first frame 401, forming a closed frame; and a filter element 403, which is fitted into the closed frame formed by the first frame 401 and the second frame 402.

[0074] In this embodiment, the end where the first frame 401 connects to the second frame 402 has a protrusion 401d, and the end where the second frame 402 connects to the first frame 401 is provided with a buckle 402b that matches the protrusion 401d. After the buckle 402b is fitted onto the protrusion 401d, the first frame 401 and the second frame form a closed frame.

[0075] In this embodiment, please refer to Figure 4 The second frame 402 is snapped together with the first frame 401.

[0076] In this embodiment, please refer to Figure 4 The first frame 401 includes: a first side frame 401a and a second side frame 401b disposed opposite to each other, and an intermediate frame 406 connecting the first side frame 401a and the second side frame 401b respectively; the first side frame 401a and the second side frame 401b are disposed in parallel, and the intermediate frame 406 is perpendicular to the first side frame 401a and the second side frame 401b respectively, wherein the first side frame 401a and the second side frame 401b have the small sliding groove 405, and the small sliding groove 405 matches the sliding groove 203 of the housing 200 to realize the sliding matching connection between the filter element 400 and the housing 200.

[0077] In this embodiment, the first side frame 401a, the second side frame 401b, and the middle frame 406 are an integral structure, which improves the integrity and durability of the filter element 400 and reduces potential weaknesses at the splicing points.

[0078] In this embodiment, the edge of the middle frame 406 has an extended border 406a, and a handle 404 is mounted on the extended border 406a. The design of the handle 404 improves the comfort of user operation, especially when the filter element 400 needs to be frequently replaced or adjusted, reducing fatigue caused by inconvenient operation.

[0079] In other embodiments, the handle 404 may not be located within the extended frame 406a, but may simply be connected to the first frame 401.

[0080] In other embodiments, please refer to Figure 5 The middle frame 406 has a through hole 406b that communicates with the closed frame. The filter element 403 is inserted directly through the through hole 406b into the closed frame formed by the first frame 401 and the second frame 402.

[0081] In this embodiment, after the second frame 402 is connected to the first frame 401, the second frame 402 is arranged parallel to the middle frame 406. The parallel arrangement of the second frame 402 and the middle frame 406 ensures that the filter element 403 of the filter element 400 is distributed parallel to the side surface 202 of the housing 200, which optimizes the airflow path and improves the filtration efficiency.

[0082] In this embodiment, the inner side of the first frame 401 has a first slot 401c, and the edge of the filter element 403 is located within the first slot 401c.

[0083] In this embodiment, the second frame 402 has a second slot 402a on its inner side. After the second frame 402 is connected to the first frame 401, the edge of the filter element 403 is also confined within the second slot 402a.

[0084] In this embodiment, the arrangement of the first slot 401c and the second slot 402a ensures the precise installation position of the filter element 403, reduces installation errors, and improves the overall performance of the filter element 400.

[0085] In other embodiments, a gasket (not shown in the figure) is also provided on the side wall surface of the first slot 401c. The gasket can achieve a sealed connection between the filter element 403 and the first slot 401c. The gasket can also be used to compensate for the size of the filter element 403. When the size of the filter element 403 is not completely matched with the first slot 401c, the gasket plays the role of compensating for the size of the filter element 403, so the precision requirements of the filter element 403 in the manufacturing process do not need to be very high.

[0086] In other embodiments, a fixed shaft (not shown in the figure) is also provided in the first slot 401c, arranged along the extending direction of the first slot 401c. One end of the fixed shaft is detachably fixed in the intermediate frame and fits against the edge of the first slot 401c. When the size of the filter element 403 is small, one end of the fixed shaft is fixed to the intermediate frame. The gasket has a through hole along the extending direction of the first slot 401c. The through hole extends through which the fixed shaft passes, fixing the gasket to the surface near the first slot 401c. One end of the gasket is in a free state. When the filter element 403 is inserted into the first slot 401c, the filter element 403 and the gasket are in an interference fit. The free end of the gasket is located between the filter element 403 and the first slot 401c.

[0087] The material of the gasket can be plastic.

[0088] In this embodiment, the first side frame 401a and the second side frame 401b are not retractable.

[0089] In other embodiments, the first side frame 401a and the second side frame 401b can also be retracted to accommodate testing of filter elements 403 of different sizes. Specifically, supplementary side frames are also included that snap onto the first side frame 401a and the second side frame 401b respectively. The supplementary side frame has a slot similar to the first slot 401c. One end of the supplementary side frame is provided with a buckle 402b that is detachably connected to the end of the first side frame 401a and the end of the second side frame 401b. The opposite end of the supplementary side frame is provided with a protrusion 401d that is connected to the buckle 402b of the second frame 402. In this way, when the length of the filter element 403 becomes smaller, the supplementary side frame can be used to supplement the length of the first frame, thereby accommodating testing of filter elements of more sizes.

[0090] The supplementary side frame described herein also includes a first sub-supplementary side frame and a second sub-supplementary side frame. The first sub-supplementary side frame has an axial sliding groove on the opposite surface of the slot. The second sub-supplementary side frame has an integrally formed axial rib in the corresponding slot. The rib is embedded in the sliding groove to form a telescopic sliding pair. The end of the second sub-supplementary side frame is provided with a locking sleeve. After the locking sleeve is rotated, it radially presses the first sub-supplementary side frame, so that the first and second sub-supplementary side frames are fixed at any extended position, thereby realizing stepless adjustment of the overall length of the supplementary side frame.

[0091] In this embodiment, the smoke generator 300 is located between the two filters 400. The smoke generator 300 includes a cigarette lighter 303, which is used to ignite the smoke sample 301. The cigarette lighter 303 is an electronic cigarette lighter, which can precisely control the cigarette lighting process, ensure the stable combustion of the smoke sample 301, provide a stable smoke source, and reduce experimental errors caused by uneven cigarette lighting. In addition, this built-in cigarette lighter eliminates the need to search for a cigarette lighter at the demonstration site, making it more convenient.

[0092] In this embodiment, please refer to the reference. Figure 7 The smoke generator 300 includes a main body (not marked in the figure), the main body having an ash collection cavity 304; a fixing member 302 for clamping and fixing a smoke sample 301, the fixing member 302 being assembled on the main body and located at the edge of the ash collection cavity 304; and a cigarette lighter 303 being assembled on the main body.

[0093] In this embodiment, the integrated design of the cigarette lighter 303 improves the safety of the device, making it particularly suitable for occasions requiring long-term stable operation.

[0094] In this embodiment, please refer to Figure 7 The main component includes: a base 308; and a functional part 309. The functional part 309 is detachably connected to the base 308, which makes the smoke generator 300 highly modular, convenient for production and maintenance. Users can replace different functional parts 309 as needed, which enhances the applicability and flexibility of the device.

[0095] In this embodiment, the functional unit 309 has the ash collection cavity 304, and the fixing member 302 and the cigarette lighter 303 are both assembled in the functional unit 309. The functional unit 309 integrates the functions of ash collection, clamping and cigarette lighting, making the structure of the smoke generator 300 more compact, reducing space occupation, and improving the overall performance and efficiency of the device. Furthermore, the centralized design makes it easier for users to operate and maintain the smoke generator 300, reducing the operational complexity caused by the dispersion of functions.

[0096] In this embodiment, after the base 308 and the functional part 309 are connected, a positioning groove 306 is formed on the side wall of the main body. The positioning groove 306 is used for accurate positioning connection with the housing part 200, preventing installation deviation of the smoke generator 300.

[0097] In this embodiment, the fixing member 302 is a clamping member, and the side wall of the ash collection cavity 304 near the fixing member 302 has a hole for inserting the smoke sample 301. After one end of the smoke sample 301 is inserted into the hole, the fixing member 302 fixes the smoke sample 301 in place.

[0098] In other embodiments, the fastener has at least two elastic tongues that extend from the sidewall of the ash collection cavity 304 toward the axis (X) of the hole and are evenly distributed circumferentially; the free ends of the elastic tongues are pushed outward when the smoke sample 301 is inserted and apply radial friction force to the outer periphery of the smoke sample 301, thereby detachably fixing the smoke sample 301 in the hole.

[0099] In this embodiment, the base 308 has a handle groove 305. The design of the handle groove 305 makes it easy for users to grip the base 308 to perform installation, disassembly or cleaning operations, which improves the convenience of operation, reduces fatigue caused by inconvenient operation, and enhances the comfort of user operation.

[0100] In this embodiment, the base 308 also has a charging port 307 for charging the cigarette lighter 303. The design of the charging port 307 makes it easy to charge the cigarette lighter 303, ensuring the power supply of the cigarette lighter 303 during long-term use and reducing the failure to light cigarettes due to battery depletion. In addition, the design of the charging port 307 allows users to choose to use batteries or external power sources as needed, enhancing the flexibility and applicability of the device.

[0101] In this embodiment, the fastener 302 is detachably connected to the main body, making the replacement and maintenance of the fastener 302 more convenient. Users can quickly replace different types of the fastener 302 to adapt to different smoke samples 301.

[0102] In this embodiment, the cigarette lighter 303 is detachably connected to the main body, making it easier to replace and maintain the cigarette lighter 303. Users can quickly replace different types of cigarette lighters 303 to adapt to different experimental and demonstration needs.

[0103] In this embodiment, after the cigarette lighter 300 is assembled into the housing 400, the smoke sample 301 of the cigarette lighter 300 is directly exposed into the receiving cavity 201.

[0104] In some embodiments, the base 308 is provided with a rotatable roller shaft, and the sealing film is wound around the roller shaft. Pulling the free end of the sealing film makes it cover and seal the opening of the ash collection cavity 304, so that the smoke sample 301 burns for a while, making it easier to collect more smoke, thus making the filtration effect of the filter element 403 clearer and more intuitive. In addition, the roller shaft has a built-in torsion spring, so that the free end of the sealing film has an automatic rotation tendency. The free end of the sealing film is provided with a handle, and the base and the side opposite to where the roller shaft is provided are provided with a fixing torque that matches the handle.

[0105] The sealing membrane described here is a flame-retardant material.

[0106] In some embodiments, the base 308 is provided with a storage opening located on one side of the ash storage cavity 304; a sliding door is slidably installed in the base 308 and covers the ash storage cavity 304, and a rack is provided on the back of the sliding door; a micro motor is fixed in the base 308, and a gear meshing with the rack is installed on the output shaft of the micro motor; when the micro motor rotates forward, the gear drives the rack to move the sliding door horizontally and fully enter the storage opening to open the ash storage cavity 304; when the micro motor rotates in reverse, the sliding door slides out in the opposite direction and returns to above the ash storage cavity 304 to seal the ash storage cavity 304.

[0107] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A filter element, characterized in that, include: The first frame has an opening on one side; The second frame is detachably connected to the first frame, and the second frame is fitted onto the open side of the first frame, and the first frame and the second frame together form a closed frame. A filter element, which is assembled within a closed frame formed by the first frame and the second frame.

2. The filter element as described in claim 1, characterized in that, The second frame is fastened to the first frame.

3. The filter element as described in claim 1, characterized in that, The first frame includes: a first side frame and a second side frame disposed opposite to each other, and a middle frame connecting the first side frame and the second side frame respectively; the first side frame and the second side frame are disposed parallel to each other, and the middle frame is perpendicular to the first side frame and the second side frame respectively.

4. The filter element as described in claim 3, characterized in that, The first side frame, the second side frame, and the middle frame are an integral structure.

5. The filter element as described in claim 3, characterized in that, The middle frame has an extended border, and a handle is fitted on the extended border.

6. The filter element as described in claim 3, characterized in that, The middle frame has a through hole that communicates with the closed frame.

7. The filter element as described in claim 3, characterized in that, After the second border is connected to the first border, the second border is set parallel to the middle frame.

8. The filter element as claimed in claim 1, characterized in that, The first frame has a first slot on its inner side, and the edge of the filter element is confined within the first slot. The second frame has a second slot on its inner side, and after the second frame is connected to the first frame, the edge of the filter element is also confined within the second slot.

9. The filter element as described in claim 3, characterized in that, The first side frame and the second side frame are retractable.

10. The filter element as claimed in claim 1, characterized in that, Also includes: A handle component, which is connected to the first frame.

11. The filter element as claimed in claim 1, characterized in that, It also includes a supplementary side frame, which has two opposite ends. One end of the supplementary side frame is detachably connected to the first frame, and the other end of the supplementary side frame is detachably connected to the second frame. The supplementary side frame has a slot.

12. The filter element as claimed in claim 11, characterized in that, The supplementary side frame includes a first sub-supplementary side frame and a second sub-supplementary side frame. The first sub-supplementary side frame has an axial sliding groove on the opposite surface of the slot. The second sub-supplementary side frame has an integrally formed axial rib in the corresponding slot. The rib is embedded in the sliding groove to form a retractable sliding pair. The end of the second sub-supplementary side frame is provided with a locking sleeve. After the locking sleeve is rotated, it radially presses the first sub-supplementary side frame, so that the first sub-supplementary side frame and the second sub-supplementary side frame are fixed at any extended position.

13. An air filtration demonstration device, characterized in that, include: Includes at least two filters as described in any one of claims 1 to 12; A housing component having a receiving cavity, at least a portion of the housing component being transparent, a filter element placed within the receiving cavity, and each of the filter elements being able to independently filter the generated smoke.

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