Visualized filter rod of filter-filler composite and method for manufacturing the same

Abstract

This application relates to a visually-oriented composite filter rod, belonging to the field of cigarette holder technology. It includes an inlet filter rod and an outlet filter rod, which are connected to a filter element via a connector. The filter element is located between the inlet and outlet filter rods, and a transparent filter paper is disposed between them. The inner wall of the transparent filter paper, the two opposite end faces of the inlet and outlet filter rods, and together they seal to form a hollow chamber, within which the filter element is located. This application improves the filtration capacity of cigarettes with a hollow chamber while reducing the increase in draw resistance.

Description

Technical Field

[0001] This application relates to the field of cigarette holder technology, and in particular to a visual filter element composite filter rod and its preparation method. Background Technology

[0002] Traditional cigarette holders are usually cotton wick filters, which have limited tar filtration. Furthermore, the filters are usually wrapped inside paper, making it impossible to see the tar adsorption directly. Because the cigarette holder is constantly heated, the tar is at a high temperature and it is difficult for it to adhere to the cotton wick, resulting in a relatively poor tar adsorption effect. At the same time, the continuously heated smoke enters the mouth directly through the filter. The heat becomes more pronounced in the latter half of the cigarette's combustion, continuously irritating the mouth and affecting the taste.

[0003] Therefore, to solve the above problems, existing cigarettes on the market have been improved by dividing the cigarette filter into two sections. The two sections are connected by a transparent filter paper, which, together with the opposite ends of the two sections, forms a hollow cavity (for example, the existing product: Huanghelou Window cigarette). After the smoke enters the hollow cavity from the first section of the filter, the smoke velocity decreases and the cavity is filled. At the same time, the smoke exchanges heat with the outside environment, thus cooling down in the hollow cavity. The cooled smoke then passes through the second section of the filter and enters the mouth, allowing more e-liquid to be absorbed by the cotton wick of the filter. Furthermore, the cooled smoke reduces irritation to the hollow cavity when inhaled.

[0004] Regarding the aforementioned technologies, the filtration effect of a cigarette filter is always limited, and the hollow chamber in the middle of the filter reduces the length of the filtration section, ultimately resulting in an insignificant filtration effect. Therefore, in order to reduce the harm of cigarettes to themselves, some smokers will connect a filter to the mouthpiece. The smoke has to pass through the first mouthpiece, the hollow chamber, the second mouthpiece, and the filter in sequence before it can be delivered to the mouth. This will result in high suction resistance, making it difficult for the user to smoke and resulting in a poor smoking experience. Summary of the Invention

[0005] In order to improve the filtration capacity of cigarettes with hollow chambers and reduce the increase in draw resistance, this application provides a visual filter element composite filter rod and its preparation method.

[0006] The visual filter firmware composite filter rod provided in this application adopts the following technical solution: A visual filter element composite filter rod includes an inlet filter rod and an outlet filter rod. The inlet filter rod and the outlet filter rod are connected together by a filter element. The filter element is located between the inlet filter rod and the outlet filter rod. A transparent filter paper is disposed between the inlet filter rod and the outlet filter rod. The inner wall of the transparent filter paper and the two opposite end faces of the inlet filter rod and the outlet filter rod are sealed together to form a hollow chamber. The filter element is located inside the hollow chamber.

[0007] By adopting the above technical solution, the smoke enters the hollow chamber from the inlet filter rod. Due to the small hole jet effect, the smoke velocity decreases after entering the hollow chamber and fills the entire hollow chamber evenly. The smoke exchanges heat with the outside air in the hollow chamber, which lowers the temperature of the smoke. At the same time, the filter element can filter the smoke in the hollow chamber. Finally, the smoke is discharged from the outlet filter rod and enters the mouth. Compared to traditional window cigarette filters, this one improves the filtration capacity of the filter and has less impact from changes in draw resistance. At the same time, it retains the function of visualizing the smoke, allowing users to observe not only the smoke in the hollow chamber but also the filtration status of the filter element.

[0008] Optionally, the connector includes a first connecting plate and a second connecting plate; The first connecting plate is connected to the end face of the inlet filter rod facing the outlet filter rod, and the first connecting plate has an inlet channel; The second connecting plate is connected to the end face of the smoke outlet filter rod facing the smoke inlet filter rod, and the second connecting plate has a smoke outlet channel; Both the first connecting plate and the second connecting plate are connected to the filter element, and the filter element is located between the first connecting plate and the second connecting plate; Both the first connecting plate and the second connecting plate are fitted with sealing rings, and the transparent filter paper wraps around the first connecting plate and the second connecting plate, with the sealing rings adhering to the transparent filter paper; The first connecting plate, the second connecting plate, and the transparent filter paper together enclose the hollow chamber.

[0009] By adopting the above technical solution, the two ends of the transparent filter paper are respectively attached to the periphery of the first connecting plate and the periphery of the second connecting plate. The first connecting plate, the second connecting plate and the transparent filter paper form a hollow chamber, and the sealing ring increases the airtightness of the hollow chamber. Meanwhile, since transparent filter paper is a flexible and easily deformable object, the first connecting plate and the second connecting plate support one end of the paper tube formed by the transparent filter paper, which can reduce the situation of compression and deformation of the transparent filter paper during subsequent processing and packaging. Furthermore, after the transparent filter paper is attached to the first connecting plate and the second connecting plate, it is only necessary to fix the first connecting plate and the inlet filter rod, and fix the second connecting plate and the outlet filter rod to achieve splicing of the transparent filter paper with the filter paper of the inlet filter rod and the filter paper of the outlet filter rod. Unlike the traditional processing method, it is not necessary to reserve a part of the transparent filter paper to wrap the ends of the inlet filter rod and the outlet filter rod, thus saving transparent filter paper. Moreover, the inlet and outlet filter rods are filled with wire harnesses and packaged with filter paper, making it difficult to control their circumference. However, the processing of the first and second connecting plates makes it easier to accurately control their circumference. By splicing the first connecting plate with the inlet filter rod and the second connecting plate with the outlet filter rod, one can quickly determine whether the circumference of the inlet and outlet filter rods is up to standard by observing whether they can be completely spliced ​​and overlapped.

[0010] Optionally, the filter element includes a first filter section and a second filter section. The first filter section is connected to the first connecting plate, and the second filter section is connected to the second connecting plate. The orthographic projection area of ​​the second filter section on the first connecting plate is larger than the orthographic projection area of ​​the first filter section on the first connecting plate. Furthermore, the orthographic projection surface of the second filter section on the first connecting plate can completely cover the orthographic projection surface of the first filter section on the first connecting plate.

[0011] By adopting the above technical solution, the adhesion effect is introduced into the filter element. When smoke flows from the first filter section to the second filter section, more smoke will flow along the surface of the first filter section, thereby enabling the first filter section to filter out more harmful substances and improving the filtration effect of the filter element.

[0012] Optionally, the first filter section has a first channel, and the side wall of the first filter section has a plurality of first through holes. The first filter section covers the smoke inlet channel, and the first channel is connected to the smoke inlet channel and the first channel is connected to the first through holes. The second filter section has a second channel, and the side wall of the second filter section has a plurality of second through holes. The second filter section covers the smoke outlet channel, and the second channel is connected to the smoke outlet channel and the second channel is connected to the second through holes.

[0013] By adopting the above technical solution, the smoke enters the first channel from the smoke inlet channel, then enters the hollow chamber through the first through hole, then enters the second channel through the second through hole, and then enters the smoke outlet channel through the second channel. This achieves that the smoke can be filtered and adsorbed by the inner wall of the first filter section, the outer wall of the first filter section, the outside of the second filter section, and the inner wall of the second filter section in sequence, which improves the filtration effect while maintaining the visibility of the smoke. Furthermore, the smoke is simultaneously injected into the hollow chamber from multiple first through holes facing different directions, allowing the smoke to fill the hollow chamber more evenly. This, in turn, allows the smoke to come into more even contact with the first and second filter sections, further enhancing the filtration effect.

[0014] Optionally, the mass of the second filter section is greater than the mass of the first filter section.

[0015] By adopting the above technical solution, during the actual processing and transfer process, the filter element is clamped by two conveyor ropes moving in the same direction, thus transporting the filter element to the designated position. Therefore, when the mass of the second filter element is greater than the mass of the first filter element, the second filter element always faces downward, thereby keeping the orientation of several first and second filter elements consistent. When the workpieces are installed in sequence, there is no need to readjust the orientation of the first and second filter elements, which improves processing efficiency.

[0016] Optionally, the second filter section has a spiral channel along its circumference.

[0017] By adopting the above technical solution, the smoke can spiral upward along the spiral groove due to the wall adhesion effect, which makes the smoke flow along the second filter section for a longer distance, allowing the second filter section to absorb more harmful substances and further improve the filtration effect.

[0018] Optionally, both the first connecting plate and the second connecting plate are provided with plug-in members, wherein the plug-in member of the first connecting plate is inserted into the inlet filter rod, and the plug-in member of the second connecting plate is inserted into the outlet filter rod.

[0019] By adopting the above technical solution, the plug-in component is directly inserted into the inlet and outlet filter rods, which can quickly form the connection between the first connecting plate and the inlet filter rod, and the connection between the second connecting plate and the outlet filter rod. Compared with the traditional filter nozzle, which only uses hot melt adhesive to bond the various connection parts, the plug-in connection method is more stable and faster.

[0020] Optionally, the connector includes an annular support plate, and the filter paper of the inlet filter rod and the outlet filter rod is attached to the annular support plate; The annular support plate connected to the smoke inlet filter rod is filled with the filament bundle of the smoke inlet filter rod, and the annular support plate connected to the smoke inlet filter rod is connected to the first connecting plate; The annular support plate connected to the smoke filter rod is filled with the filament bundle of the smoke filter rod, and the annular support plate connected to the smoke filter rod is connected to the second connecting plate.

[0021] By adopting the above technical solution, the filter paper of some of the inlet and outlet filter rods is pasted on the annular support plate. This means that the annular support plate provides support for the inlet and outlet filter rods, further ensuring the circumference of the outlet and inlet filter rods.

[0022] Optionally, the annular support plate is connected to an elastic card, the elastic card has a first slot, the inner walls of the smoke inlet channel and the smoke outlet channel are provided with first blocks, the elastic card is provided with a second block, and the inner walls of the smoke inlet channel and the smoke outlet channel are provided with second slots. An elastic card near the smoke inlet filter rod is inserted into the smoke inlet channel, and an elastic card near the smoke outlet filter rod is inserted into the smoke outlet channel; The first card block is inserted into the corresponding first card slot, and the second card block is inserted into the corresponding second card slot. By adopting the above technical solution, the elastic card tightens the corresponding smoke inlet and smoke outlet channels, the first card block is inserted into the first card slot, and the second card block is inserted into the second card slot, so that the annular support plate can be quickly and stably connected to the first connecting plate and the second connecting plate.

[0023] This application provides a visual filter firmware composite filter rod for manufacturing the aforementioned visual filter firmware composite filter rod, employing the following technical solution: S1. Material preparation: Select appropriate filament bundles and filter paper to form the inlet and outlet filter rods. Select filter elements, connectors and transparent filter paper according to design requirements. S2. Introducing the wall adhesion effect technology into the filter element: Adding protrusions to the filter element to create a variable cross-section on its circumference. S3. Material sorting and installation: Sort and install the inlet filter rod, outlet filter rod, filter element, connector and transparent filter paper according to the assembly sequence; S4. Filter rod gap elimination: Calibrate the position of the inlet filter rod, outlet filter rod, connector and transparent filter paper; S5. Forming and sealing: The transparent filter paper, connectors, inlet filter rod and outlet filter rod are sealed and reinforced. S6. Finished Product Inspection: Conduct appearance and quality inspections on the prepared composite filter rods to ensure that they meet the requirements for appearance and adsorption performance.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. Compared to traditional window cigarette filters, this one improves the filter's filtration capacity and has less impact from changes in draw resistance. At the same time, it retains the function of visualizing the smoke, allowing users to observe not only the smoke in the hollow chamber but also the filtration status of the filter element. 2. Since transparent filter paper is a flexible and easily deformable object, the first connecting plate and the second connecting plate support one end of the paper tube formed by the transparent filter paper, which can reduce the situation of compression and deformation of the transparent filter paper during subsequent processing and packaging. 3. After the transparent filter paper is attached to the first connecting plate and the second connecting plate, it is only necessary to fix the first connecting plate and the inlet filter rod, and fix the second connecting plate and the outlet filter rod to achieve splicing of the transparent filter paper with the filter paper of the inlet filter rod and the filter paper of the outlet filter rod. Unlike the traditional processing method, it is not necessary to reserve a part of the transparent filter paper to wrap the ends of the inlet filter rod and the outlet filter rod, thus saving transparent filter paper. 4. The inlet and outlet filter rods are filled with wire harnesses and packaged with filter paper, making it difficult to control their circumference. However, the processing of the first and second connecting plates makes it easier to accurately control their circumference. By splicing the first connecting plate with the inlet filter rod and the second connecting plate with the outlet filter rod, you can quickly determine whether the circumference of the inlet and outlet filter rods is up to standard by observing whether they can be completely spliced ​​and overlapped. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0026] Figure 2 This is a schematic diagram illustrating the structure of the smoke inlet channel, smoke outlet channel, first channel, and second channel in the embodiments of this application.

[0027] Figure 3 yes Figure 2 An enlarged schematic diagram of part A in the middle.

[0028] Figure 4 This is a schematic diagram illustrating the structure of the raised ring in other embodiments of this application.

[0029] Figure 5 This is a schematic diagram illustrating the structure of the spiral ring channel in other embodiments of this application.

[0030] Figure 6 This is a schematic diagram of another embodiment of the present application illustrating the structure of transparent filter paper covering the inlet and outlet filter rods.

[0031] Figure 7 This is a schematic diagram illustrating the structure of the connecting rod in other embodiments of this application.

[0032] Figure 8 This is a schematic diagram illustrating the structure of the annular support plate and the elastic card in other embodiments of this application.

[0033] Figure 9 This is a schematic diagram illustrating the structure of the insert in other embodiments of this application.

[0034] Figure 10 This is a schematic diagram illustrating the structure of the insertion rod in other embodiments of this application.

[0035] Figure 11 This is a schematic diagram of another embodiment of the present application, illustrating that the filter element is provided with only a second filter section.

[0036] Explanation of reference numerals in the attached drawings: 1. Inlet filter rod; 2. Outlet filter rod; 3. Connector; 31. First connecting plate; 311. Inlet channel; 32. Second connecting plate; 321. Outlet channel; 33. Annular groove; 34. Sealing ring; 35. Hot melt adhesive layer; 36. Insert rod; 4. Filter element; 41. First filter section; 411. First channel; 412. First through hole; 42. Second filter section; 421. Second channel; 422. Second through hole; 43. Protruding ring; 44. Spiral annular channel; 45. Connecting rod; 5. Transparent filter paper; 6. Hollow chamber; 7. Insertion piece; 71. Annular support plate; 72. Elastic card; 73. First slot; 74. First block; 75. Second block; 76. Second slot; 77. Pin. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1-10 This application will be described in further detail.

[0038] This application discloses a visual filter firmware composite filter rod.

[0039] like Figure 1 , Figure 2 and Figure 3 The visual filter assembly includes an inlet filter rod 1 and an outlet filter rod 2. The inlet filter rod 1 and the outlet filter rod 2 are connected together by a connector 3 and a filter element 4 is provided. The filter element 4 is located between the inlet filter rod 1 and the outlet filter rod 2. A transparent filter paper 5 is provided between the inlet filter rod 1 and the outlet filter rod 2. The inner wall of the transparent filter paper 5 and the two opposite end faces of the inlet filter rod 1 and the outlet filter rod 2 together form a hollow chamber 6. The filter element 4 is located inside the hollow chamber 6.

[0040] Smoke enters the hollow chamber 6 from the inlet filter rod 1. Due to the small-hole jet effect, the smoke velocity decreases after entering the hollow chamber 6 and fills the entire hollow chamber 6 evenly. The smoke exchanges heat with the outside air in the hollow chamber 6, which lowers the temperature of the smoke. At the same time, the filter element 4 can filter the smoke in the hollow chamber 6. Finally, the smoke is discharged from the outlet filter rod 2 and enters the mouth. Compared to traditional window cigarette filters, this design improves the filter's filtration capacity and minimizes the impact of changes in draw resistance. At the same time, it retains the function of visualizing smoke, allowing users to observe not only the smoke in the hollow chamber 6 but also the filtration status of the filter element 4.

[0041] In this embodiment, the materials of the inlet filter rod 1 and the outlet filter rod 2 are fiber bundles and filter paper.

[0042] like Figure 1 and Figure 2 The filter element 4 includes a first filter section 41 and a second filter section 42. In this embodiment, both the first filter section 41 and the second filter section 42 are cylindrical blocks. The first filter section 41 and the second filter section 42 are integrally formed and coaxially arranged. The cross-sectional area of ​​the second filter section 42 is larger than that of the first filter section 41. Both the first filter section 41 and the second filter section 42 are connected to the connector 3.

[0043] like Figure 4 In other embodiments, the first filter section 41 and the second filter section 42 have the same cross-sectional area, and the second filter section 42 has a raised ring 43 integrally formed along its circumferential surface.

[0044] like Figure 5 In other embodiments, the second filter section 42 has a cross-sectional area larger than that of the first filter section 41, and the second filter section 42 has a spiral channel 44 along its circumference.

[0045] In other embodiments, the first filter section 41 and the second filter section 42 may be configured to have the same cross-sectional area. The first filter section 41 has a raised ring 43 integrally formed along its circumference, and both the raised ring 43 and the second filter section 42 are provided with a spiral ring channel 44.

[0046] All embodiments of this application ensure that the projected area of ​​the second filter section 42 on the end face of the smoke inlet filter rod 1 is greater than the projected area of ​​the first filter section 41 on the smoke inlet filter rod 1, and the projected surface of the second filter section 42 on the end face of the smoke inlet filter rod 1 completely covers the projected surface of the first filter section 41 on the smoke inlet filter rod 1, thereby introducing the wall adhesion effect to the filter element 4. When smoke flows from the first filter section 41 to the second filter section 42, more smoke will flow along the surface of the first filter section 41, so that the first filter section 41 can filter out more harmful substances and improve the filtering effect of the filter element 4.

[0047] In addition, both the first filter section 41 and the second filter section 42 are made of polymer porous materials. Polymer porous materials play an important role in cigarette filtration. They can be prepared by specific methods and modified according to the characteristics of harmful components to achieve selective removal of target harmful components.

[0048] For example, the first filter section 41 and the second filter section 42 can reduce HCN in flue gas by up to 74.7% using the prepared polymer material.

[0049] The first filter section 41 and the second filter section 42 use hydrogel microspheres, which can reduce HCN by 16%-48%.

[0050] Introducing amino-modified ion exchange resins into the first filter section 41 and the second filter section 42 can reduce HCN levels by up to 55%.

[0051] The first filter section 41 and the second filter section 42 use amino-rich polymer materials, which can reduce crotonaldehyde by more than 30% while ensuring the sensory quality of cigarettes.

[0052] The first filter section 41 and the second filter section 42 can also use polymethyl methacrylate interconnected porous materials or polysiloxane network polymer materials, which can also achieve good tar filtration effect.

[0053] In all embodiments, the mass of the second filter section 42 is always greater than the mass of the first filter section 41.

[0054] During the actual processing and transfer process, the filter element 4 is clamped by two conveyor ropes moving in the same direction, thus transporting the filter element 4 to the designated position. Therefore, when the mass of the second filter part 42 is greater than the mass of the first filter part 41, the second filter part 42 always faces downward, thereby keeping the orientation of several first filter parts 41 and second filter parts 42 consistent. When the workpieces are installed in sequence, there is no need to readjust the orientation of the first filter parts 41 and second filter parts 42, which improves processing efficiency.

[0055] like Figure 2 The connector 3 includes a first connecting plate 31 and a second connecting plate 32. Both the first connecting plate 31 and the second connecting plate 32 are cylindrical plates. The first connecting plate 31 has a smoke inlet channel 311, and the second connecting plate 32 has a smoke outlet channel 321. The radius of the first connecting plate 31 is slightly smaller than the radius of the smoke inlet filter rod 1. Furthermore, the radii of the smoke inlet filter rod 1 and the smoke outlet filter rod 2 are the same, and the radii of the first connecting plate 31 and the second connecting plate 32 are the same.

[0056] The first connecting plate 31 is connected to the end face of the inlet filter rod 1 facing the outlet filter rod 2, and the second connecting plate 32 is connected to the end face of the outlet filter rod 2 facing the inlet filter rod 1.

[0057] The first connecting plate 31 is connected to the first filter section 41, and the second connecting plate 32 is connected to the second filter section 42. Both the first connecting plate 31 and the second connecting plate 32 are provided with annular grooves 33. A sealing ring 34 is tightly fitted inside the annular groove 33. The outer side wall of the sealing ring 34 is flush with the outer side wall of the first connecting plate 31 and the outer side wall of the second connecting plate 32.

[0058] The inner wall of the transparent filter paper 5 is connected to the first connecting plate 31 and the second connecting plate 32 by hot melt adhesive. The sealing ring 34 is attached to the inner wall of the transparent filter paper 5. The two end faces of the first connecting plate 31 and the second connecting plate 32 facing each other and the transparent filter paper 5 together form a hollow chamber 6.

[0059] The two ends of the transparent filter paper 5 are respectively attached to the circumferential surfaces of the first connecting plate 31 and the second connecting plate 32. The first connecting plate 31, the second connecting plate 32 and the transparent filter paper 5 form a hollow chamber 6. The sealing ring 34 increases the sealing performance of the hollow chamber 6. Meanwhile, since the transparent filter paper 5 is a flexible and easily deformable object, the first connecting plate 31 and the second connecting plate 32 support one end of the paper tube formed by the transparent filter paper 5, which can reduce the situation of compression and deformation of the transparent filter paper 5 during subsequent processing and packaging.

[0060] The two ends of the transparent filter paper 5 are flush with the two opposite ends of the first connecting plate 31 and the second connecting plate 32, respectively. The first connecting plate 31 is connected to the inlet filter rod 1, and the second connecting plate 32 is connected to the outlet filter rod 2. The outer wall of the transparent filter paper 5 is flush with and connected to the outer wall of the inlet filter rod 1 and the outer wall of the outlet filter rod 2.

[0061] After the transparent filter paper 5 is attached to the first connecting plate 31 and the second connecting plate 32, it is only necessary to fix the first connecting plate 31 and the inlet filter rod 1, and fix the second connecting plate 32 and the outlet filter rod 2. This allows the transparent filter paper 5 to be spliced ​​with the filter paper of the inlet filter rod 1 and the filter paper of the outlet filter rod 2. Unlike the traditional processing method, it is not necessary to reserve a portion of the transparent filter paper 5 to wrap the ends of the inlet filter rod 1 and the outlet filter rod 2, thus saving the transparent filter paper 5.

[0062] like Figure 6 In other embodiments, the first connecting plate 31, the second connecting plate 32, the inlet filter rod 1 and the outlet filter rod 2 have the same radius. The transparent filter paper 5 extends from the opposite end faces of the inlet filter rod 1 and the outlet filter rod 2, and the transparent filter paper 5 is attached to and glued to the outer wall of the inlet filter rod 1 and the outer wall of the outlet filter rod 2.

[0063] The inlet filter rod 1 and the outlet filter rod 2 are filled with wire harnesses and packaged with filter paper. The circumference of both is not easy to control. However, the processing of the first connecting plate 31 and the second connecting plate 32 makes it easier to accurately control the circumference. Therefore, the first connecting plate 31, the second connecting plate 32, the inlet filter rod 1 and the outlet filter rod 2 are designed to have the same radius. After splicing the first connecting plate 31 and the inlet filter rod 1 and the second connecting plate 32 and the outlet filter rod 2, it is possible to quickly determine whether the circumference of the inlet filter rod 1 and the outlet filter rod 2 is qualified by observing whether they can be completely spliced ​​and overlapped.

[0064] like Figure 2In the embodiments of the application, the connection method between the first filter section 41 and the first connecting plate 31, and the connection method between the second filter section 42 and the second connecting plate 32 are as follows: The first filter section 41 is connected to the first connecting plate 31. The first filter section 41 completely covers the smoke inlet channel 311. The first filter section 41 has a first channel 411. The side wall of the first filter section 41 has several first through holes 412 equidistantly spaced along its circumference. The first channel 411 is connected to the smoke inlet channel 311. The several first through holes 412 are all connected to the first channel 411.

[0065] The second filter section 42 is connected to the second connecting plate 32. The second filter section 42 completely covers the smoke outlet channel 321. The second filter section 42 has a second channel 421. The side wall of the second filter section 42 has several second through holes 422 equidistantly spaced along its circumference. The second channel 421 is connected to the smoke outlet channel 321. The several second through holes 422 are all connected to the second channel 421.

[0066] Smoke enters the first channel 411 through the smoke inlet channel 311, then enters the hollow chamber 6 through the first through hole 412. Next, smoke enters the second channel 421 through the second through hole 422, and then enters the smoke outlet channel 321 through the second channel 421. This allows smoke to be filtered and adsorbed sequentially by the inner wall of the first filter section 41, the outer wall of the first filter section 41, the outer wall of the second filter section 42, and the inner wall of the second filter section 42. This improves the filtration effect while maintaining the visibility of smoke. Furthermore, the smoke is simultaneously injected into the hollow chamber 6 from multiple first through holes 412 facing different directions, allowing the smoke to fill the hollow chamber 6 more evenly, thereby allowing the smoke to contact the first filter section 41 and the second filter section 42 more evenly, further improving the filtration effect.

[0067] like Figure 7 In other embodiments, the connection method between the first filter section 41 and the first connecting plate 31, and the connection method between the second filter section 42 and the second connecting plate 32, may also be: One end of the first filter section 41 is connected to several connecting rods 45 and extends into the smoke inlet channel 311. The connecting rods 45 are all connected to the inner wall of the smoke inlet channel 311. There is space for smoke to pass through between the first filter section 41 and the smoke inlet channel 311.

[0068] The second filter section 42 is also connected to several connecting rods 45 at one end and extends into the smoke outlet channel 321. The connecting rods 45 are all connected to the inner wall of the smoke outlet channel 321. There is space for smoke to pass through between the second filter section 42 and the smoke outlet channel 321.

[0069] There is space between adjacent connecting rods 45 for smoke to pass through.

[0070] This connection method eliminates the need for opening holes in the first filter section 41 and the second filter section 42, making processing and production convenient.

[0071] like Figure 3 In this embodiment of the application, the connection method between the first connecting plate 31 and the inlet filter rod 1, and the connection method between the second connecting plate 32 and the outlet filter rod 2 are as follows: The first connecting plate 31 is coated with a hot melt adhesive layer 35 along its end face edge, and the hot melt adhesive layer 35 is connected to the end face of the smoke inlet filter rod 1. The second connecting plate 32 is also coated with a hot melt adhesive layer 35 along its end face edge, and the hot melt adhesive layer 35 is connected to the end face of the smoke filter rod 2.

[0072] like Figure 8 In other embodiments, the connection method between the first connecting plate 31 and the inlet filter rod 1, and the connection method between the second connecting plate 32 and the outlet filter rod 2 are as follows: The first connecting plate 31 and the inlet filter rod 1 are connected by a connector 7, and the second connecting plate 32 and the outlet filter rod 2 are also connected by a connector 7.

[0073] By directly inserting the connector 7 into the inlet filter rod 1 and the outlet filter rod 2, the connection between the first connecting plate 31 and the inlet filter rod 1 and the connection between the second connecting plate 32 and the outlet filter rod 2 can be quickly formed. Compared with the traditional filter nozzle, which only uses hot melt adhesive to bond the various connection parts, the plug-in connection method is more stable and faster.

[0074] like Figure 8 The connector 7 includes an annular support plate 71, the filter paper of the inlet filter rod 1 is pasted on the corresponding annular support plate 71, and the filter paper of the outlet filter rod 2 is pasted on the corresponding annular support plate 71. The annular support plate 71 connected to the smoke inlet filter rod 1 is filled with the filament bundle of the smoke inlet filter rod 1, and the annular support plate 71 connected to the smoke inlet filter rod 1 is connected to the first connecting plate 31. The annular support plate 71 connected to the smoke filter rod 2 is filled with the filament bundle of the smoke filter rod 2, and the annular support plate 71 connected to the smoke filter rod 2 is connected to the second connecting plate 32.

[0075] A number of elastic cards 72 are connected to the end face of the annular support plate 71 extending out of the filament bundle. The elastic cards 72 are provided with a first card slot 73. The inner walls of the smoke inlet channel 311 and the smoke outlet channel 321 are integrally formed with a first card block 74. The elastic cards 72 are connected with a second card block 75. The inner walls of the smoke inlet channel 311 and the smoke outlet channel 321 are provided with a second card slot 76. The elastic card 72 near the smoke inlet filter rod 1 is inserted into the smoke inlet channel 311, and the elastic card 72 near the smoke outlet filter rod 2 is inserted into the smoke outlet channel 321. The first card block 74 is inserted into the corresponding first card slot 73, and the second card block 75 is inserted into the corresponding second card slot 76.

[0076] The filter paper of some of the inlet filter rod 1 and outlet filter rod 2 is pasted on the annular support plate 71, which means that the annular support plate 71 provides support for the inlet filter rod 1 and outlet filter rod 2, further ensuring the circumference of the outlet filter rod 2 and the inlet filter rod 1. Furthermore, the elastic card 72 tightens the corresponding smoke inlet channel 311 and smoke outlet channel 321, the first card block 74 is inserted into the first card slot 73, and the second card block 75 is inserted into the second card slot 76, so that the annular support plate 71 can be quickly and stably connected to the first connecting plate 31 and the second connecting plate 32.

[0077] like Figure 9 In other embodiments, the connector 7 can also be a pin 77, which is directly inserted into the wire harness to complete the connection between the first connecting plate 31 and the inlet filter rod 1, and the connection between the second connecting plate 32 and the outlet filter rod 2.

[0078] like Figure 10 In other embodiments, the connector 3 can also be a rod 36. The end faces of the first filter part 41 and the second filter part 42 that are opposite to each other are connected to a plurality of rods 36. The rods 36 of the first filter part 41 are inserted into the wire harness of the smoke filter rod 1, and the rods 36 of the second filter part 42 are inserted into the wire harness of the smoke filter cloth.

[0079] In other embodiments, the connector 3 can also be hot melt adhesive. The hot melt adhesive is applied to the end face of the first filter part 41, and the first filter part 41 is attached to the end face of the smoke inlet filter rod 1. The hot melt adhesive is applied to the end face of the second filter part 42, and the second filter part 42 is attached to the end face of the smoke outlet filter rod 2.

[0080] like Figure 11 In other embodiments, the filter element 4 may only have a second filter part 42. The second filter part 42 has a spiral ring channel 44 along its circumference. The two ends of the second filter part 42 are connected to the inlet filter rod 1 and the outlet filter rod 2 respectively through the connector 3. In other embodiments, the filter element 4 may also be provided with only a second filter part 42, the second filter part 42 having protrusions along its circumference, and the two end faces of the second filter part 42 being connected to the inlet filter rod 1 and the outlet filter rod 2 respectively via connectors 3.

[0081] The implementation principle of this application embodiment is as follows: smoke enters the hollow chamber 6 from the smoke inlet filter rod 1. Due to the small hole jet effect, the smoke velocity decreases after entering the hollow chamber 6 and fills the entire hollow chamber 6 evenly. The smoke exchanges heat with the outside air in the hollow chamber 6, which lowers the temperature of the smoke. At the same time, the filter element 4 can filter the smoke in the hollow chamber 6. Finally, the smoke is discharged from the smoke outlet filter rod 2 and enters the mouth. Compared to traditional window cigarette filters, this design improves the filter's filtration capacity and minimizes the impact of changes in draw resistance. At the same time, it retains the function of visualizing smoke, allowing users to observe not only the smoke in the hollow chamber 6 but also the filtration status of the filter element 4.

[0082] This application also provides a method for preparing a visual filter firmware composite filter rod, used to produce the visual filter firmware composite filter rod of this application embodiment, including the following steps: S1. Material preparation: Select appropriate filament bundles and filter paper to form the inlet filter rod 1 and the outlet filter rod 2. Select filter element 4, connector 3 and transparent filter paper 5 according to design requirements. S2. Introducing the wall adhesion effect technology onto the filter element 4: Adding protrusions to the filter element 4 to form a variable cross-section on the periphery of the filter element 4; For example, the filter element 4 is divided into a first filter part 41 and a second filter part 42. The wall adhesion effect is achieved by designing the first filter part 41 and the second filter part 42 to be of different sizes and by setting protrusions on the first filter part 41. S3. Material sorting and installation: Sort and install the inlet filter rod 1, outlet filter rod 2, filter element 4, connector 3 and transparent filter paper 5 according to the assembly sequence; By utilizing the fact that the mass of the second filter section 42 is greater than that of the first filter section 41, the first filter section 41 is always directed toward the inlet filter rod 1 when it is conveyed to the mounting platform, and the second filter section 42 is always directed toward the outlet filter rod 2 when it is conveyed to the mounting platform. S4. Filter rod gap elimination: Calibrate the positions of the inlet filter rod 1, the outlet filter rod 2, the connector 3, and the transparent filter paper 5; The coaxiality of the inlet filter rod 1, the first connecting plate 31, the second connecting plate 32 and the outlet filter rod 2 can be improved by observing and adjusting the relative positions of the first connecting plate 31 and the inlet filter rod 1, and the second connecting plate 32 and the outlet filter rod 2. This ensures that the transparent filter paper 5 can be accurately connected to the inlet filter rod 1 and the outlet filter rod 2 when the transparent filter paper 5 is pasted.

[0083] S5. Molding and sealing: The connector 3, the inlet filter rod 1 and the outlet filter rod 2 are sealed and reinforced with hot melt adhesive, and the transparent paper is tightly wrapped around the first connecting plate 31 and the second connecting plate 32 with centerline adhesive.

[0084] S6. Finished Product Inspection: Conduct appearance and quality inspections on the prepared composite filter rods to ensure that they meet the requirements for appearance and adsorption performance.

[0085] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A visual filter element composite filter rod, characterized in that: It includes an inlet filter rod (1) and an outlet filter rod (2). The inlet filter rod (1) and the outlet filter rod (2) are connected together by a filter element (4) through a connector (3). The filter element (4) is located between the inlet filter rod (1) and the outlet filter rod (2). A transparent filter paper (5) is provided between the inlet filter rod (1) and the outlet filter rod (2). The inner wall of the transparent filter paper (5), the two opposite end faces of the inlet filter rod (1) and the outlet filter rod (2) are sealed together to form a hollow chamber (6). The filter element (4) is located inside the hollow chamber (6). The connector (3) includes a first connecting plate (31) and a second connecting plate (32); The first connecting plate (31) is connected to the end face of the smoke inlet filter rod (1) facing the smoke outlet filter rod (2), and the first connecting plate (31) has a smoke inlet channel (311); The second connecting plate (32) is connected to the end face of the smoke outlet filter rod (2) facing the smoke inlet filter rod (1), and the second connecting plate (32) is provided with a smoke outlet channel (321); The first connecting plate (31) and the second connecting plate (32) are both connected to the filter element (4), and the filter element (4) is located between the first connecting plate (31) and the second connecting plate (32); The first connecting plate (31), the second connecting plate (32), and the transparent filter paper (5) together enclose the hollow chamber (6); The filter element (4) includes a first filter section (41) and a second filter section (42), wherein the first filter section (41) is connected to the first connecting plate (31) and the second filter section (42) is connected to the second connecting plate (32); The first filter section (41) has a first channel (411), and the side wall of the first filter section (41) has a plurality of first through holes (412). The first filter section (41) covers the smoke inlet channel (311), and the first channel (411) is connected to the smoke inlet channel (311). The first channel (411) is connected to the first through holes (412). The second filter section (42) has a second channel (421), and the side wall of the second filter section (42) has a plurality of second through holes (422). The second filter section (42) covers the smoke outlet channel (321), the second channel (421) is connected to the smoke outlet channel (321), and the second channel (421) is connected to the second through holes (422). Both the first filter section (41) and the second filter section (42) are cylindrical blocks, and the first filter section (41) and the second filter section (42) are integrally formed and coaxially arranged; The connection between the first channel (411) and the second channel (421) is completely covered by the bottom surface of the second filter section (42); The projected area of ​​the second filter part (42) on the end face of the smoke inlet filter rod (1) is greater than the projected area of ​​the first filter part (41) on the smoke inlet filter rod (1), and the projected surface of the second filter part (42) on the end face of the smoke inlet filter rod (1) completely covers the projected surface of the first filter part (41) on the smoke inlet filter rod (1). Smoke enters the first channel (411) through the smoke inlet channel (311), then enters the hollow chamber (6) through the first through hole (412), then enters the second channel (421) through the second through hole (422), and then enters the smoke outlet channel (321) through the second channel (421). This allows smoke to be filtered and adsorbed sequentially by the inner wall of the first filter section (41), the outer wall of the first filter section (41), the outside of the second filter section (42), and the inner wall of the second filter section (42).

2. The visual filter firmware composite filter rod according to claim 1, characterized in that: Both the first connecting plate (31) and the second connecting plate (32) are fitted with sealing rings (34), and the transparent filter paper (5) wraps around the first connecting plate (31) and the second connecting plate (32), with the sealing ring (34) fitting against the transparent filter paper (5).

3. The visual filter firmware composite filter rod according to claim 2, characterized in that: The projected area of ​​the second filter part (42) on the first connecting plate (31) is greater than the projected area of ​​the first filter part (41) on the first connecting plate (31), and the projected surface of the second filter part (42) on the first connecting plate (31) can completely cover the projected surface of the first filter part (41) on the first connecting plate (31).

4. The visual filter firmware composite filter rod according to claim 3, characterized in that: The mass of the second filter section (42) is greater than the mass of the first filter section (41).

5. The visual filter firmware composite filter rod according to claim 3, characterized in that: The second filter section (42) has a spiral channel (44) along its circumference.

6. The visual filter firmware composite filter rod according to claim 2, characterized in that: Both the first connecting plate (31) and the second connecting plate (32) are provided with plugs (7). The plugs (7) of the first connecting plate (31) are inserted into the inlet filter rod (1), and the plugs (7) of the second connecting plate (32) are inserted into the outlet filter rod (2).

7. The visual filter firmware composite filter rod according to claim 6, characterized in that: The connector (7) includes an annular support plate (71), and the filter paper of the inlet filter rod (1) and the outlet filter rod (2) is pasted on the annular support plate (71); The annular support plate (71) connected to the smoke inlet filter rod (1) is filled with the filament bundle of the smoke inlet filter rod (1), and the annular support plate (71) connected to the smoke inlet filter rod (1) is connected to the first connecting plate (31); The annular support plate (71) connected to the smoke filter rod (2) is filled with the filament bundle of the smoke filter rod (2), and the annular support plate (71) connected to the smoke filter rod (2) is connected to the second connecting plate (32).

8. The visual filter firmware composite filter rod according to claim 7, characterized in that: The annular support plate (71) is connected to an elastic card (72), the elastic card (72) is provided with a first card slot (73), the inner walls of the smoke inlet channel (311) and the smoke outlet channel (321) are provided with a first card block (74), the elastic card (72) is provided with a second card block (75), and the inner walls of the smoke inlet channel (311) and the smoke outlet channel (321) are provided with a second card slot (76). The elastic card (72) near the smoke inlet filter rod (1) is inserted into the smoke inlet channel (311), and the elastic card (72) near the smoke outlet filter rod (2) is inserted into the smoke outlet channel (321); The first card block (74) is inserted into the corresponding first card slot (73), and the second card block (75) is inserted into the corresponding second card slot (76).

9. A method for preparing a visual filter element composite filter rod, characterized in that: To manufacture the visual filter firmware composite filter rod according to any one of claims 1-8, the following steps are included: S1. Material preparation: Select appropriate filament bundles and filter paper to form the inlet filter rod (1) and outlet filter rod (2). Select filter elements (4), connectors (3) and transparent filter paper (5) according to design requirements. S2. Introducing the wall adhesion effect technology onto the filter element (4): Adding protrusions to the filter element (4) to create a variable cross-section on the circumference of the filter element (4): S3. Material sorting and installation: Sort and install the inlet filter rod (1), outlet filter rod (2), filter element (4), connector (3) and transparent filter paper (5) according to the assembly sequence; S4. Filter rod gap elimination: Calibrate the positions of the inlet filter rod (1), outlet filter rod (2), connector (3) and transparent filter paper (5); S5. Forming and sealing: The transparent filter paper (5), connector (3), inlet filter rod (1) and outlet filter rod (2) are sealed and reinforced. S6. Finished Product Inspection: Conduct appearance and quality inspections on the prepared composite filter rods to ensure that they meet the appearance and adsorption performance requirements.

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