A pen container type filter
By designing a pen-tube style filter, the problem of existing pen-tube filters being incompatible with bottle openings of different diameters and having caps that are easily lost has been solved. This design achieves compatibility with bottle openings of different diameters and prevents cap loss, thus enhancing the versatility and convenience of the product.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUIZHOU YUANZHIKANG ENVIRONMENTAL PROTECTION TECH CO LTD
- Filing Date
- 2025-06-27
- Publication Date
- 2026-07-14
AI Technical Summary
Existing pen filters are not compatible with bottle openings of different diameters, the caps are easily lost, and their function is limited.
Designed as a pen holder-style filter, the diameter of the tube sidewall gradually increases to accommodate bottle mouths of different diameters. The cap is designed to prevent loss through a detachable connection and clamping structure, and also includes a functional slot and a compass.
It achieves compatibility with bottle mouths of different diameters, prevents cap loss, enhances functional versatility, and improves ease of use and practicality.
Smart Images

Figure CN224485145U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of water treatment technology, specifically to a pen holder-type filter. Background Technology
[0002] The outdoor pen-style water filter is a portable and practical water purification tool designed for outdoor enthusiasts. Its compact and lightweight pen-shaped design easily fits in a pocket or backpack, making it suitable for hiking, camping, and travel. Utilizing a high-efficiency filter cartridge, it effectively removes bacteria, sediment, odors, and other impurities from water, providing safe drinking water. Operation is simple: just place the filter into the water source and quickly filter the water by sucking or squeezing. Made of durable materials suitable for various outdoor environments, it is an ideal choice for wilderness survival and emergency drinking water, making outdoor drinking water safer and more convenient.
[0003] However, in existing products, pen filters usually have a uniform side wall diameter. They can only be inserted into the bottle with the same diameter as the middle part of the pen filter to lock the bottle opening. Otherwise, it is very inconvenient to operate by hand. In addition, the two caps of existing pen filters cannot be combined and are easy to lose. Existing pen filters usually have simple functions and can only filter dirty water. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a pen holder-style filter that can be clamped onto bottle openings of different widths, has a cap that is not easily lost, and offers a variety of functions, effectively solving the problems existing in the prior art.
[0005] The objective of this utility model is achieved through the following technical solution:
[0006] A pen-tube type filter includes a filter body with a pen-shaped tube for easy portability and outdoor use. One end of the tube is an inlet pipe, and the other end is an outlet pipe. The inlet pipe has an inlet, and the outlet pipe has an outlet. A cavity structure is located in the middle of the tube, within which a filter element is installed. Water entering the cavity is purified by the filter element and is then drinkable. Both the inlet and outlet pipes are equipped with caps to prevent soiling during transport. The diameter of the tube gradually increases from small to large. The sidewalls of the filter body are inclined, allowing them to be secured to bottle openings with diameters ranging from the maximum to the minimum, making it compatible with various types of mineral water bottles on the market. Both the inlet and outlet pipes are equipped with locking structures that form a detachable connection with the cap, ensuring that the caps do not easily detach during activity. One cap has a clamping element that can be held in a pocket, while the other cap has a functional slot that can provide the filter body with other functions. The two caps also have a connecting structure that forms a detachable and fixed connection, ensuring that the two caps are connected together and not easily lost.
[0007] In one embodiment, the cover is divided into an outlet pipe cover and an inlet pipe cover, so that both the outlet pipe and the inlet pipe can be covered and isolated from the outside. The side wall diameter of the outlet pipe and the inlet pipe is smaller than the diameter of the connection between the two and the pipe body, which facilitates the closing of the cover. The clamping member is a clamping piece, which is set on the outlet pipe cover to facilitate the storage of the outlet pipe cover and the inlet pipe cover. The functional slot is set on the inlet pipe cover, which can be given different functions.
[0008] In one embodiment, the connecting structure includes a locking post and a ring. The locking post is set on the water outlet cap and consists of a post and a card. The card is arranged circumferentially on the outside of the post. The ring is integral with the water inlet cap, that is, the water inlet cap can be closed on the locking post. The two can be combined to form a whole and clipped onto the pocket by a clip.
[0009] In one embodiment, the inlet pipe and the outlet pipe are stepped, wherein the diameter of the inlet pipe gradually increases from bottom to top to increase the contact area between the water flow and the filter element, which facilitates rapid filtration, and the diameter of the outlet pipe gradually decreases from bottom to top to better fit the shape of a person's mouth when sucking. The connection between the inlet pipe and the outlet pipe and the pipe body is provided with a cover surface for placing the cover.
[0010] In one embodiment, the water outlet pipe is also provided with a trumpet-shaped lip-fitting wall. When sucking, the lips can fit against the fitting wall to form a vacuum and increase the suction force. The lip-fitting wall gradually narrows its diameter towards the water outlet until it is the same as the water outlet, and is provided with a tubular extension that can be used for teeth to bite.
[0011] In one embodiment, the water outlet pipe and the pipe body are detachably connected to facilitate the installation of the filter element. The top of the pipe body is provided with a fixing groove, and the inner wall of the water outlet pipe is provided with a sealing ring that fits into the fixing groove. The two form a tight connection to prevent the filter element from falling off.
[0012] In one embodiment, the water inlet pipe and the pipe body are integrally formed, which improves structural strength and sealing performance. The side wall of the water inlet pipe can be completely fitted with the inner wall of the water inlet pipe cover to ensure a tight connection.
[0013] In one embodiment, a functional slot is located at the bottom of the water inlet cover, and a compass is provided inside the functional slot to help users identify directions and make reasonable use of the functional slot space.
[0014] In one embodiment, the locking structure consists of two parts: one part is a fitting wall provided on the water outlet pipe and the water inlet pipe, and the other part is the inner wall of the cover. The fitting wall fits against the inner wall of the cover to ensure the sealing effect. Beneficial effects
[0015] The side wall diameter of the filter body, i.e. the side wall diameter of the tube, gradually increases, allowing the tube to be secured to the bottle opening with a diameter between the maximum and minimum diameters of the tube. This makes it compatible with most water bottles on the market. The outlet cap and inlet cap can be interlocked to form a single unit. The outlet cap and inlet cap can be attached together to a pocket using clips to prevent loss. A compass is also provided in the functional slot, achieving a multi-purpose effect. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the structure of this utility model;
[0018] Figure 2 This is an exploded view of the structure of this utility model;
[0019] Figure 3 This is one of the schematic diagrams of the tube structure of this utility model;
[0020] Figure 4 This is the second schematic diagram of the tube structure of this utility model;
[0021] Figure 5 This is a top view of the present invention;
[0022] Figure 6 This utility model Figure 5 Sectional view at point AA;
[0023] Figure 7 This utility model Figure 6 Enlarged view of point A
[0024] Figure 8 This is a schematic diagram of the water inlet pipe cover structure of this utility model;
[0025] Figure 9 This is a schematic diagram of the separation structure of the pipe body and the outlet pipe of this utility model;
[0026] Figure 10 This is a schematic diagram of the water outlet pipe structure of this utility model;
[0027] Figure 11 This is a schematic diagram of the water inlet pipe cover structure of this utility model;
[0028] Figure 12 This is an exploded view of the water inlet pipe cover structure of this utility model.
[0029] In the diagram: Filter body 1, tube 2, inlet pipe 3, outlet pipe 4, inlet 5, outlet 6, cavity mechanism 7, filter element 8, functional groove 9, outlet pipe cover 10, inlet pipe cover 11, clip 12, locking post 13, ring 14, column 15, card 16, cover surface 17, lip-fitting wall 18, cover groove 19, sealing ring 20, compass 201, fitting wall 21. Detailed Implementation
[0030] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.
[0031] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0034] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.
[0035] Example
[0036] Please see Figure 1-12A pen-tube type filter includes a filter body 1, which has a pen-shaped tube 2. One end of the tube 2 is a water inlet pipe 3, and the other end is a water outlet pipe 4. The water inlet pipe 3 has a water inlet 5, and the water outlet pipe 4 has a water outlet 6. A cavity structure 7 is provided in the middle of the tube 2, and a filter element 8 is provided inside the cavity structure 7. In use, dirty water is poured into a container, and then the filter body 1 is placed on the bottle mouth, so that the water inlet pipe 3 is submerged in the dirty water. By sucking through the water inlet pipe 3 with the mouth, a negative pressure is generated, causing the dirty water to be drawn into the water inlet pipe 3, filtered by the filter element 8, and become drinkable water. The water flows into the water outlet pipe 4 and then through the water outlet 6 to reach the mouth for drinking. Both the tube 4 and the water inlet tube 3 are equipped with caps. When carrying, the caps cover the water inlet 5 and the water outlet 6 to prevent them from getting dirty. When in use, the caps can be removed. The diameter of the tube 2 gradually increases, making the side wall of the tube 2 inclined. The side wall of the tube 2 can be locked onto the bottle mouth with a diameter within the range of the maximum and minimum diameter of the tube, making it compatible with common beverage bottles on the market. Both the water inlet tube 3 and the water outlet tube 4 are equipped with locking structures that form a detachable connection with the caps. One of the caps is equipped with a clamping part, and the other cap is equipped with a functional groove 9. The two caps are also equipped with a connecting structure, so that the two caps form a detachable fixed connection. They can be attached to a pocket by the clamping part to prevent loss.
[0037] Preferably, the cover body is divided into an outlet pipe cover 10 and an inlet pipe cover 11. The side wall diameters of the outlet pipe 4 and the inlet pipe 3 are smaller than the diameters at the connection points between them and the pipe body 2. The clamping member is a clamping piece 12, which is disposed on the outlet pipe cover 10. The functional groove 9 is disposed on the inlet pipe cover 11.
[0038] By adopting the above technical solution, the side wall diameters of the water outlet pipe 4 and the water inlet pipe 3 are smaller than the diameter at the connection between the two and the pipe body 2, leaving space for the water supply pipe cover 10 and the water inlet pipe cover 11 to be closed. When the water pipe cover 10 and the water inlet pipe cover 11 are closed on the pipe body 2, the side wall of the filter body 1 is generally inclined and straight, and the clip 12 can make the water outlet pipe cover 10 clamped on the pocket.
[0039] Preferably, the connecting structure includes a locking post 13 and a ring 14. The locking post 13 is disposed on the water outlet cover 10. The locking post 13 is composed of a column 15 and a card 16. The card 16 is arranged circumferentially on the outside of the column 15. The ring 14 is integral with the water inlet cover 11, that is, the water inlet cover 11 can be closed on the locking post 13.
[0040] By adopting the above technical solution, after the water outlet cap 10 and the water inlet cap 11 are separated from the tube body 2, the lower end of the water inlet cap 11, i.e. the ring body 14, is aligned with the locking post 13 and inserted, so that the water inlet cap 11 can be installed on the water outlet cap 10, making the water outlet cap 10 and the water inlet cap 11 a whole. By clamping the clip 12 on the pocket, the water outlet cap 10 and the water inlet cap 11 can be prevented from being lost.
[0041] Preferably, the inlet pipe 3 and the outlet pipe 4 are stepped, wherein the diameter of the inlet pipe 3 gradually increases from bottom to top, and the diameter of the outlet pipe 4 gradually decreases from bottom to top, and a cover surface 17 is provided at the connection between the inlet pipe 3 and the outlet pipe 4 and the pipe body 2.
[0042] By adopting the above technical solution, the water inlet pipe 3 and the water outlet pipe 4 are stepped, leaving space for the water outlet pipe cover 10 and the water inlet pipe cover 11 to be closed, and when the water pipe cover 10 and the water inlet pipe cover 11 are closed, the bottom surfaces of the two are in contact with the cover surface 17.
[0043] Preferably, the water outlet pipe 4 is also provided with a trumpet-shaped lip-fitting wall 18, the lip-fitting wall 18 gradually narrows its diameter towards the water outlet 6 to be the same as the water outlet 6, and is provided with a tubular extension.
[0044] By adopting the above technical solution, when water needs to be absorbed, the pouting state of the lips is perfectly aligned with the lip-fitting wall 18, which better absorbs the negative pressure generated by the water outlet pipe 4. The tubular extension at the end of the water outlet pipe 4 can be used for teeth to bite. The filter body 1 can also be used when the hands are not used.
[0045] Preferably, the water outlet pipe 4 is detachably connected to the pipe body 2, the top of the pipe body 2 is provided with a fixed cover groove 19, and the inner wall of the water outlet pipe 4 is provided with a sealing ring 20 that is inserted into the fixed cover groove 19.
[0046] By adopting the above technical solution, during installation, first place the filter element 8 into the pipe body 2, then fasten the water outlet pipe 3 onto the pipe body 2, and let the sealing ring 20 slide into the fixed cover groove 19 to complete the installation of the pipe body 2.
[0047] Preferably, the water inlet pipe 3 and the pipe body 2 are integrally formed, and the side wall of the water inlet pipe 3 can be completely fitted with the inner wall of the water inlet pipe cover 11.
[0048] By adopting the above technical solution, the water inlet pipe 3 and the pipe body 2 are integrally formed, which improves the overall rigidity of the pipe body 2 and reduces the number of openings.
[0049] Preferably, the functional groove 9 is located at the bottom end of the water inlet pipe cover 11, and the functional groove 9 is provided with a compass 201.
[0050] By adopting the above technical solution, the water inlet cover 11 can be used independently and can be used as a compass 201.
[0051] Preferably, the locking structure consists of two parts, one part being the fitting wall 21 set on the water outlet pipe 4 and the water inlet pipe 3, and the other part being the inner wall of the cover.
[0052] By adopting the above technical solution, when closing the cover, simply press the water outlet cover 10 and the water inlet cover 11 onto the water outlet pipe 4 and the water inlet pipe 3, making the closing process simple and quick.
[0053] Working principle: The upper and lower diameters of the tube 2 are different, making the side wall of the tube 2 inclined. This allows the tube 2 to be clamped onto the bottle mouth with a diameter between the maximum and minimum diameters of the tube 2. By pressing the lips against the lip-fitting wall 18 and sucking on the water outlet tube 4, a negative pressure is generated, causing dirty water in the water bottle to be sucked into the water inlet tube 3 and enter the cavity structure 7. After being filtered by the filter element 8, the water enters the human body cavity through the water outlet tube 4. When using the filtration function, the lower end of the water inlet tube cap 11, i.e., the ring 14, is aligned with the locking post 13 and inserted, so that the water inlet tube cap 11 can be installed on the water outlet tube cap 10, making the water outlet tube cap 10 and the water inlet tube cap 11 a single unit. By clamping the clip 12 onto the pocket, the water inlet tube cap 10 and the water outlet tube cap 11 can be prevented from being lost. The water inlet tube cap 11 is also equipped with a compass 201 that can be used independently.
[0054] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A pen-tube type filter, comprising a filter body (1), characterized in that, The filter body (1) is provided with a pen-shaped tube (2), one end of which is a water inlet pipe (3) and the other end is a water outlet pipe (4). The water inlet pipe (3) is provided with a water inlet (5), and the water outlet pipe (4) is provided with a water outlet (6). A cavity structure (7) is provided in the middle of the tube body (2), and a filter element (8) is provided inside the cavity structure (7). Both the water outlet pipe (4) and the water inlet pipe (3) are provided with caps. The diameter of the pipe (2) increases from small to large, so that the side wall of the pipe (2) is inclined. The side wall of the pipe (2) can be clamped on the bottle mouth with a diameter within the range of the maximum and minimum diameter of the pipe. The inlet pipe (3) and outlet pipe (4) are provided with locking structures that can be detachably connected to the cap. One of the caps is provided with a clamping part, and the other cap is provided with a functional groove (9). The two caps are also provided with a connecting structure so that the two caps can be detachably fixedly connected.
2. A pen-tube type filter according to claim 1, characterized in that, The cover is divided into an outlet pipe cover (10) and an inlet pipe cover (11). The side wall diameters of the outlet pipe (4) and the inlet pipe (3) are smaller than the diameters at the connection points between them and the pipe body (2). The clamping member is a clamping piece (12). The clamping piece (12) is set on the outlet pipe cover (10). The functional groove (9) is set on the inlet pipe cover (11).
3. A pen-tube type filter according to claim 2, characterized in that, The connecting structure is provided with a locking post (13) and a ring (14). The locking post (13) is set on the water outlet cover (10). The locking post (13) is composed of a column (15) and a card (16). The card (16) is arranged circumferentially on the outside of the column (15). The ring (14) is integrated with the water inlet cover (11), that is, the water inlet cover (11) can be closed on the locking post (13).
4. A pen-tube type filter according to claim 3, characterized in that, The inlet pipe (3) and outlet pipe (4) are stepped, with the inlet pipe (3) having a gradually increasing diameter from bottom to top and the outlet pipe (4) having a gradually decreasing diameter from bottom to top. The connection between the inlet pipe (3) and outlet pipe (4) and the pipe body (2) is provided with a cover surface (17).
5. A pen-tube type filter according to claim 4, characterized in that, The water outlet pipe (4) is also provided with a trumpet-shaped lip-fitting wall (18), which gradually narrows its diameter towards the water outlet (6) to be the same as the water outlet (6), and is provided with a tubular extension.
6. A pen-tube type filter according to claim 5, characterized in that, The water outlet pipe (4) is detachably connected to the pipe body (2). The top of the pipe body (2) is provided with a fixed cover groove (19), and the inner wall of the water outlet pipe (4) is provided with a sealing ring (20) that is inserted into the fixed cover groove (19).
7. A pen-tube type filter according to claim 6, characterized in that, The water inlet pipe (3) and the pipe body (2) are integrally formed, and the side wall of the water inlet pipe (3) can be completely fitted with the inner wall of the water inlet pipe cover (11).
8. A pen-tube type filter according to claim 7, characterized in that, The functional slot (9) is located at the bottom of the water inlet cover (11), and a compass (201) is provided inside the functional slot (9).
9. A pen holder type filter according to claim 8, characterized in that, The locking structure consists of two parts, one part being the fitting wall (21) set on the water outlet pipe (4) and the water inlet pipe (3), and the other part being the inner wall of the cover.