A detachable molecular sieve adsorption device

Abstract

The application discloses a detachable molecular sieve adsorption device, which comprises a rack, a molecular sieve and a locking assembly. The rack is provided with a mounting frame, and the mounting frame is provided with a mounting groove. The molecular sieve is detachably arranged in the mounting groove. The locking assembly comprises a limiting part and an auxiliary part. The molecular sieve is provided with a limiting structure matched with the limiting part. The limiting part is provided with a locking position matched with the limiting structure and an unlocking position separated from the limiting structure. The limiting part can be maintained in the locking position under the action of the auxiliary part to lock the molecular sieve in the mounting groove, and can be switched from the locking position to the unlocking position under the action of external force to release the locking of the molecular sieve. When the performance of the molecular sieve is reduced due to long-term use and adsorption of impurities, the user only needs to operate the auxiliary part to unlock or directly operate the limiting part to separate from the limiting structure through pressing or the like, so that the old molecular sieve can be taken out and the new molecular sieve can be inserted. The operation is simple and intuitive.

Description

Technical Field

[0001] This application belongs to the technical field of respiratory therapy equipment, specifically relating to a portable molecular sieve adsorption device. Background Technology

[0002] Molecular sieve adsorption devices are important medical structures that separate oxygen from the air through the principle of physical adsorption. Their core components typically include two alternating molecular sieve adsorption towers and an oxygen storage chamber for storing oxygen-enriched gas. As a core component of oxygen generation equipment, the performance stability of the molecular sieve adsorption device directly affects the oxygen separation efficiency and purity.

[0003] During long-term operation, molecular sieves inevitably face multiple deterioration factors: dust, oil, and other impurities in the air continuously adsorb into the pore structure of the molecular sieve, occupying effective adsorption sites and weakening the selective adsorption capacity of the molecular sieve for gases such as nitrogen; water molecules in the environment, due to their strong affinity for the molecular sieve, may occupy adsorption sites, creating a occupancy effect and hindering the normal adsorption process of target gas molecules; frequent pressurization and depressurization cycles of the oxygen generator cause continuous friction and collision between molecular sieve particles, leading to particle breakage and pulverization, and a sharp reduction in the effective adsorption area; secondly, the crystal structure of the molecular sieve gradually changes with the duration of use, and its adsorption performance exhibits irreversible degradation. The combined effects of these factors ultimately result in a significant decrease in the oxygen production concentration of the molecular sieve adsorption device, therefore, the molecular sieve needs to be replaced periodically to maintain equipment efficiency.

[0004] In existing technologies, molecular sieves are generally rigidly fixed to the frame by bolts or installed using a pin-type snap-fit ​​structure. These traditional connection methods have significant drawbacks: disassembly and replacement require specialized tools to gradually loosen multiple mechanical fasteners, making the process cumbersome, time-consuming, and inefficient; the complex disassembly and assembly structure demands a high level of operator expertise, significantly increasing equipment downtime and labor maintenance costs; especially when the internal space of the equipment is confined, conventional locking mechanisms such as threaded connections and embedded snap-fits are difficult to unlock quickly with one hand, severely compromising operational convenience. These problems make it difficult for users to replace molecular sieves independently, causing inconvenience. Summary of the Invention

[0005] This application provides a detachable molecular sieve adsorption device to solve the technical problems of complex disassembly and assembly of molecular sieve adsorption devices in traditional oxygen production equipment.

[0006] The technical solution adopted in this application is as follows:

[0007] A detachable molecular sieve adsorption device includes a frame, a molecular sieve, and a locking assembly. The frame has a mounting frame with a mounting groove, and the molecular sieve is removably installed in the mounting groove. The locking assembly includes a limiting part and an auxiliary part. The molecular sieve has a limiting structure adapted to the limiting part. The limiting part has a locking position that engages with the limiting structure and an unlocking position that disengages from the limiting structure. The limiting part can be maintained in the locking position by the auxiliary part to lock the molecular sieve in the mounting groove, and can be switched from the locking position to the unlocking position by external force to release the locking of the molecular sieve.

[0008] The molecular sieve adsorption device described in this application also includes the following additional technical features:

[0009] The molecular sieve adsorption device also includes a flexible lifting member installed on the molecular sieve. When the limiting part is in the locked position, the lifting member is sandwiched between the limiting part and the molecular sieve. When the molecular sieve is lifted, the lifting member can drive the limiting part to switch from the locked position to the unlocked position.

[0010] The limiting structure is configured as a limiting platform located at the end of the molecular sieve. When the limiting part is in the locked position, the limiting part is engaged with the limiting platform.

[0011] The frame has a limiting groove, the auxiliary part is located in the limiting groove and has a pressing surface, the auxiliary part can be moved along the direction of the limiting groove by the force applied to the pressing surface, thereby driving the limiting part to switch from the locked position to the unlocked position.

[0012] The locking assembly further includes a rotating plate, which has a rotating shaft and a first end and a second end located at both ends of the rotating shaft. The limiting part is located at the first end, and the auxiliary part is movably connected to the second end. The frame has a rotating slot, and the rotating shaft is located in the rotating slot and can rotate in the rotating slot. The auxiliary part can push the second end to rotate around the rotating shaft, so as to drive the limiting part to move from the locked position to the unlocked position.

[0013] The locking assembly further includes an elastic reset member connected to the second end and the frame respectively. The elastic reset member can drive the second end to rotate around the rotating shaft, so as to drive the limiting part to move from the unlocked position to the locked position.

[0014] The elastic reset component is a spring. The frame and the auxiliary part are respectively provided with a first limiting ring groove and a second limiting ring groove. The two ends of the spring are respectively engaged with the first limiting ring groove and the second limiting ring groove.

[0015] The auxiliary part has a sliding groove, and the second end has a guide slider located in the sliding groove. When the auxiliary part pushes the second end to move, the guide slider moves in the sliding groove to guide the second end to move relative to the auxiliary part.

[0016] The frame is provided with a rotating seat, the rotating seat having a rotating arc surface that abuts against the rotating shaft, the rotating arc surface abutting against the rotating shaft.

[0017] The frame is provided with a limiting protrusion. When the limiting part moves to the unlocked position, the second end abuts against the limiting protrusion to restrict the movement of the second end.

[0018] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0019] 1. The molecular sieve adsorption device of this application includes a frame and a molecular sieve. The frame is equipped with a mounting frame specifically for installing the molecular sieve. The mounting frame has a mounting groove adapted to the shape of the molecular sieve. By allowing the molecular sieve to be pulled out and installed in the mounting groove, the efficiency of molecular sieve replacement and the ease of operation are significantly improved. When the molecular sieve adsorption device is in normal working condition, the limiting part and the limiting structure of the molecular sieve are tightly locked together. The auxiliary part maintains the limiting part in the locked position through its own force, ensuring that the molecular sieve can be stably fixed in the mounting groove during normal operation. For example, when a medical oxygen concentrator is running continuously, the reliable locking of the molecular sieve by the limiting part can prevent it from shifting due to vibration, ensuring the stability of oxygen separation efficiency. When it is necessary to replace the molecular sieve, the user only needs to apply external force (such as pressing or flicking) to the auxiliary part, and the limiting part can switch from the locked position to the unlocked position, releasing the constraint on the molecular sieve. Alternatively, users can directly apply force to the limiting part, moving it to the unlocked position where it separates from the limiting structure. At this point, the locking assembly releases the molecular sieve, allowing it to be extracted from the mounting slot. This tool-free operation is particularly crucial in emergency situations, enabling medical personnel to replace the molecular sieve within seconds, ensuring continuous oxygen supply.

[0020] In home care settings, elderly users or non-professionals can easily unlock the molecular sieve by operating the auxiliary part or directly applying pressure to the limiting part, without the need for disassembly tools such as screwdrivers. For example, when the molecular sieve's performance deteriorates due to long-term adsorption of impurities, users can simply unlock it by pressing the auxiliary part or directly separating the limiting part from the limiting structure to remove the old molecular sieve and insert the new one—the operation is simple and intuitive. Furthermore, for built-in oxygen generators, the pull-out design avoids the cumbersome steps of disassembling the entire casing. For devices like car oxygen concentrators or portable oxygen concentrators with limited internal space, this device allows for molecular sieve replacement via top pull-out, side pull-out, or other methods, without disassembling the complex internal structure.

[0021] 2. In a preferred embodiment of this application, when the molecular sieve is in operation, the lifting member is clamped between the limiting part and the molecular sieve, which does not affect the locking stability of the molecular sieve. When the molecular sieve needs to be replaced, the user directly pulls the flexible lifting member. The flexible lifting member deforms and gradually straightens, while simultaneously driving the limiting part to move and unlock from the limiting structure, thus switching it from the locked position to the unlocked position. In this way, the difficulty of disassembling the molecular sieve is further reduced. When the user needs to replace the molecular sieve, only one hand needs to act on the frame or other place, and the other hand needs to operate the flexible lifting member to pull it up. As the lifting member lifts the molecular sieve, the limiting part moves to the unlocked position, and the molecular sieve is pulled out of the mounting slot under the action of the flexible lifting member.

[0022] 3. In a preferred embodiment of this application, the interlocking structure between the limiting platform and the limiting part provides a reliable locking force through planar contact. When the molecular sieve is in operation, the limiting part interlocks with the limiting platform at the end of the molecular sieve, forming a large contact area, uniformly distributing pressure, and effectively reducing the probability of displacement of the molecular sieve due to vibration or airflow impact. For example, in the high-pressure adsorption stage, the tight fit between the limiting platform and the limiting part can withstand pressure changes inside the molecular sieve, ensuring that the molecular sieve is stably placed in the installation groove. In addition, the interlocking structure composed of the limiting platform and the limiting part can also resist some of the lateral impact force of the molecular sieve, ensuring the stability of the molecular sieve installation when the equipment moves or is subjected to accidental collisions.

[0023] 4. As a preferred embodiment of this application, the design of the pressing surface further enhances the user's ease of unlocking the limiting part. When the molecular sieve is in normal working condition, the auxiliary part is located within the limiting groove, and the pressing surface is flush with or slightly recessed with the frame surface, preventing accidental unlocking. For example, during the transportation of the oxygen concentrator, this design prevents the auxiliary part from being triggered by bumps and collisions, ensuring that the molecular sieve remains locked. When the molecular sieve needs to be replaced, the user only needs to press the pressing surface of the auxiliary part, which moves along the limiting groove and unlocks the limiting part. This external operation method is particularly suitable for portable oxygen concentrators with compact layouts, where the locking components require less working space, and only a small operating space is needed to unlock the limiting part. In addition, the guiding effect of the limiting groove on the auxiliary part ensures the accuracy of the unlocking action. During frequent operations, the auxiliary part always moves along a fixed trajectory, avoiding unlocking failure due to deviation. This stability is particularly important for elderly users or those with poor hand dexterity, significantly reducing the operational difficulty for such users.

[0024] 5. As a preferred embodiment of this application, the linkage design between the rotating plate and the rotating shaft converts the linear motion of the auxiliary part into the rotational motion of the rotating plate around the rotating shaft, achieving force amplification and precise control. Specifically, when the auxiliary part is unlocked, it slides along the extension direction of the limiting groove. Since the auxiliary part is movably connected to the second end, its movement causes the second end to rotate around the rotating shaft, while simultaneously causing the first end to rotate in the opposite direction around the rotating shaft, thereby moving the limiting part installed at the first end to the unlocked position. This lever arm amplification effect reduces operating resistance, allowing users to unlock with only a small pressing force, making it particularly suitable for the elderly, those with weak constitutions, or those recovering from surgery. Furthermore, the constraint effect of the rotating slot on the rotating shaft ensures the accuracy of the rotation trajectory. During frequent rotations, the rotating shaft always rotates smoothly within the slot, avoiding unlocking difficulties due to shaking and significantly improving the working stability of the locking assembly.

[0025] 6. In a preferred embodiment of this application, the introduction of the elastic reset member enables the locking assembly to have an automatic locking function, improving operational convenience and safety. When the molecular sieve is in normal working condition, the elastic force provided by the elastic reset member keeps the rotating plate in the position that holds the limiting part in the locked position, ensuring that the limiting part and the limiting structure of the molecular sieve are tightly engaged. Even when the equipment vibrates or is subjected to external impact, the preload of the elastic reset member can prevent the limiting part from being accidentally unlocked. For example, during the operation of a vehicle-mounted oxygen concentrator, frequent bumps and vibrations may cause the traditional locking structure to loosen, while this design maintains the stability of the lock through the continuous action of the elastic reset member.

[0026] When replacing the molecular sieve, the user pushes the new molecular sieve into the installation slot. The limiting structure of the molecular sieve pushes the limiting part to overcome the resistance of the elastic reset element and move to the unlocked position. Once the limiting structure is fully in place, the elastic reset element immediately drives the limiting part back to the locked position, achieving automatic locking. This "push-in-lock" design is particularly practical in scenarios where both hands are busy. For example, at an emergency scene, medical personnel can quickly insert the new molecular sieve and lock it without any additional operation, saving valuable rescue time. Attached Figure Description

[0027] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0028] Figure 1 This is a schematic diagram of the frame structure according to one embodiment of this application;

[0029] Figure 2 This is a schematic diagram of the molecular sieve adsorption device according to one embodiment of this application;

[0030] Figure 3 This is a schematic diagram of a portion of the molecular sieve adsorption device according to one embodiment of this application;

[0031] Figure 4 for Figure 3 Enlarged view of part A;

[0032] Figure 5 This application presents a schematic diagram of the structure of a locking component according to one embodiment;

[0033] Figure 6 This is a cross-sectional view of a molecular sieve adsorption device according to one embodiment of this application;

[0034] Figure 7 for Figure 6 Enlarged view of part B;

[0035] Figure 8 This is a structural schematic diagram of the frame portion structure according to one embodiment of this application;

[0036] Figure 9 for Figure 8 Enlarged view of part C;

[0037] Figure 10 This is a schematic diagram of the auxiliary part according to one embodiment of this application;

[0038] Figure 11 This is a schematic diagram of the structure of the lower limiting part according to one embodiment of this application.

[0039] List of components and reference numerals:

[0040] 1. Frame, 11. Mounting frame, 111. Mounting slot, 12. Limiting slot, 13. Rotating slot, 14. First limiting ring slot, 15. Rotating seat, 16. Limiting protrusion;

[0041] 2 molecular sieves, 21 confined structure;

[0042] 3 Locking assembly, 31 Limiting part, 32 Auxiliary part, 321 Pressing surface, 322 Second limiting ring groove, 323 Sliding groove, 33 Rotating plate, 331 Rotating shaft, 332 First end, 333 Second end, 34 Elastic reset member;

[0043] 4. Flexible lifting components;

[0044] 5. Guide slider. Detailed Implementation

[0045] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0046] Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below. It should be noted that, unless otherwise specified, the embodiments of this application and the features thereof can be combined with each other.

[0047] Furthermore, it should be understood in the description of this application that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0048] In this application, unless otherwise expressly 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 application according to the specific circumstances.

[0049] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0050] like Figures 1 to 5As shown, a detachable molecular sieve adsorption device includes a frame 1, a molecular sieve 2, and a locking assembly 3. The frame 1 has a mounting frame 11 with a mounting groove 111, and the molecular sieve 2 is removably installed in the mounting groove 111. The locking assembly 3 includes a limiting part 31 and an auxiliary part 32. The molecular sieve 2 has a limiting structure 21 adapted to the limiting part 31. The limiting part 31 has a locking position that engages with the limiting structure 21 and an unlocking position that separates from the limiting structure 21. The limiting part 31 can be maintained in the locking position under the action of the auxiliary part 32 to lock the molecular sieve 2 in the mounting groove 111, and can be switched from the locking position to the unlocking position under the action of external force to release the locking of the molecular sieve 2.

[0051] The molecular sieve adsorption device of this application includes a frame 1 and a molecular sieve 2. The frame 1 is equipped with a mounting frame 11 specifically for mounting the molecular sieve 2. The mounting frame 11 has a mounting groove 111 adapted to the shape of the molecular sieve 2. By removably mounting the molecular sieve 2 into the mounting groove 111, the replacement efficiency and ease of operation of the molecular sieve 2 are significantly improved. When the molecular sieve adsorption device is in normal working condition, the limiting part 31 is tightly locked with the limiting structure 21 of the molecular sieve 2. The auxiliary part 32 maintains the limiting part 31 in the locked position by its own force, ensuring that the molecular sieve 2 can be stably fixed in the mounting groove 111 during normal operation. For example, when a medical oxygen concentrator is running continuously, the reliable locking of the molecular sieve 2 by the limiting part 31 can prevent it from shifting due to vibration, ensuring the stability of oxygen separation efficiency. When it is necessary to replace the molecular sieve 2, the user only needs to apply external force (such as pressing or flicking) to the auxiliary part 32, and the limiting part 31 can switch from the locked position to the unlocked position, releasing the constraint on the molecular sieve 2. Alternatively, the user can directly apply force to the limiting part 31, moving it to the unlocked position where it is separated from the limiting structure 21. At this point, the locking component 3 releases the lock on the molecular sieve 2, allowing the molecular sieve 2 to be extracted from the mounting slot 111. This tool-free operation is particularly crucial in emergency situations, allowing medical personnel to replace the molecular sieve 2 within seconds, ensuring continuous oxygen supply.

[0052] In home care settings, elderly users or non-professionals can easily unlock the molecular sieve 2 by operating the auxiliary part 32 or directly applying the limiting part 31, without the need for disassembly tools such as screwdrivers. For example, when the performance of the molecular sieve 2 deteriorates due to long-term adsorption of impurities, the user can simply unlock it by pressing the auxiliary part 32 or directly separating the limiting part 31 from the limiting structure 21 to remove the old molecular sieve 2 and insert the new one. The operation is simple and intuitive. Furthermore, for built-in oxygen generators, the pull-out design avoids the cumbersome steps of disassembling the entire casing. For example, in car oxygen concentrators or portable oxygen concentrators, where the internal space is limited, this device allows for the replacement of the molecular sieve 2 by top pulling, side pulling, or other methods, without disassembling the complex internal structure.

[0053] As a preferred embodiment of this application, such as Figures 2 to 4 As shown, the molecular sieve adsorption device also includes a flexible lifting member 4 installed on the molecular sieve 2. When the limiting part 31 is in the locked position, the lifting member is clamped between the limiting part 31 and the molecular sieve 2. The lifting member can drive the limiting part 31 to switch from the locked position to the unlocked position when lifting the molecular sieve 2.

[0054] When the molecular sieve 2 is in operation, the lifting member is clamped between the limiting part 31 and the molecular sieve 2, which will not affect the locking stability of the molecular sieve 2. When the molecular sieve 2 needs to be replaced, the user directly pulls the flexible lifting member 4. The flexible lifting member 4 deforms and gradually straightens, while driving the limiting part 31 to move to unlock it from the limiting structure 21, thus switching it from the locked position to the unlocked position. In this way, the difficulty of disassembling the molecular sieve 2 is further reduced. When the user needs to replace the molecular sieve 2, only one hand needs to act on the frame 1 or other places, and the other hand needs to operate the flexible lifting member 4 to pull it up. As the flexible lifting member 4 lifts the molecular sieve 2, the limiting part 31 moves to the unlocked position, and the molecular sieve 2 is pulled out of the mounting groove 111 under the action of the flexible lifting member 4.

[0055] Specifically, the flexible lifting component 4 is a nylon component made of nylon material. The top of the flexible lifting component 4 has a lifting opening for the user to put their hand through and hold it.

[0056] This application does not limit the locking method of the limiting part 31 and the limiting structure 21, nor their structural form; they can adopt any of the following embodiments:

[0057] Implementation method one: such as Figure 4 As shown, the limiting structure 21 is constructed as a limiting platform located at the end of the molecular sieve 2. When the limiting part 31 is in the locking position, the limiting part 31 is engaged with the limiting platform.

[0058] The interlocking structure between the limiting platform and the limiting part 31 provides a reliable locking force through planar contact. When the molecular sieve 2 is in operation, the limiting part 31 interlocks with the limiting platform at the end of the molecular sieve 2, forming a large contact area, uniformly distributing pressure, and effectively reducing the probability of displacement of the molecular sieve 2 due to vibration or airflow impact. For example, during the high-pressure adsorption stage, the tight fit between the limiting platform and the limiting part 31 can withstand the pressure changes inside the molecular sieve 2, ensuring that the molecular sieve 2 is stably placed in the mounting groove 111. In addition, the interlocking structure composed of the limiting platform and the limiting part 31 can also resist some of the lateral impact force of the molecular sieve 2, ensuring the stable installation of the molecular sieve 2 when the equipment moves or is subjected to accidental collisions.

[0059] Implementation method 2: The limiting structure is constructed as a groove opened on the molecular sieve, and the limiting part is an elastic element. When the limiting part is in the locked position, the limiting part is located in the groove and is interference-fitted with the groove.

[0060] In this embodiment, the limiting part is locked to the limiting structure by an interference fit, and relies on its own elastic preload to achieve locking with the groove. When the user needs to unlock the molecular sieve, the limiting part can be manually pulled out of the groove or the auxiliary part can be moved to drive the limiting part out of the groove.

[0061] Implementation Method 3: The limiting part is a magnetic component, and the limiting structure is a mating part fixed to the molecular sieve. When the limiting part is in the locked position, the limiting part and the limiting structure lock the molecular sieve through magnetic attraction. When it is necessary to unlock the molecular sieve, the movement of the auxiliary part can be controlled, which drives the movement of the limiting part to overcome the magnetic attraction between it and the limiting structure. Alternatively, the user can directly act on the limiting part to overcome the magnetic attraction and unlock the molecular sieve.

[0062] As a preferred embodiment of this application, such as Figure 1 , Figure 2 As shown, the frame 1 has a limiting groove 12, the auxiliary part 32 is located in the limiting groove 12 and has a pressing surface 321. The auxiliary part 32 can be moved along the direction of the limiting groove 12 by the force applied to the pressing surface 321, thereby driving the limiting part 31 to switch from the locked position to the unlocked position.

[0063] The design of the pressing surface 321 further enhances the user's ease of unlocking the limiting part 31. When the molecular sieve 2 is in normal working condition, the auxiliary part 32 is located within the limiting groove 12, and the pressing surface 321 is flush with or slightly recessed from the surface of the frame 1, preventing accidental unlocking. For example, during the transportation of the oxygen concentrator, this design prevents the auxiliary part 32 from being triggered by bumps and collisions, ensuring that the molecular sieve 2 is always in a locked state. When the molecular sieve 2 needs to be replaced, the user only needs to press the pressing surface 321 of the auxiliary part 32, and the auxiliary part 32 moves along the direction of the limiting groove 12, thereby unlocking the limiting part 31. This external operation method is particularly suitable for portable oxygen concentrators with compact space layouts, where the locking assembly 3 requires little working space, and only a small operating space is needed to unlock the limiting part 31. In addition, the guiding effect of the limiting groove 12 on the auxiliary part 32 ensures the accuracy of the unlocking action. During frequent operations, the auxiliary part 32 always moves along a fixed trajectory, avoiding unlocking failure due to deviation. This stability is especially important for elderly users or those with poor hand dexterity, significantly reducing the difficulty of operation for such users.

[0064] Specifically, the limiting groove 12 is exposed outside the frame 1. When the limiting part 31 is in the locked position, the pressing surface 321 is located inside the limiting groove 12. The user can easily touch the pressing surface 321 located inside the limiting groove 12, but the pressing surface 321 is not easily touched by external components. Moreover, the size of the limiting groove 12 is adapted to the size of the auxiliary part 32, and the auxiliary part 32 can slide along the extension direction of the limiting groove 12 without deflection.

[0065] As a preferred embodiment of this implementation, such as Figure 5 As shown, the locking assembly 3 also includes a rotating plate 33. The rotating plate 33 is provided with a rotating shaft 331, and a first end 332 and a second end 333 located at both ends of the rotating shaft 331. The limiting part 31 is located at the first end 332, and the auxiliary part 32 is movably connected to the second end 333. The frame 1 is provided with a rotating slot 13. The rotating shaft 331 is located in the rotating slot 13 and can rotate in the rotating slot 13. The auxiliary part 32 can push the second end 333 to rotate around the rotating shaft 331, so as to drive the limiting part 31 to move from the locked position to the unlocked position.

[0066] The linkage design between the rotating plate 33 and the rotating shaft 331 transforms the linear motion of the auxiliary part 32 into the rotational motion of the rotating plate 33 around the rotating shaft 331, achieving force amplification and precise control. Specifically, when the auxiliary part 32 is operated to unlock, it slides along the extension direction of the limiting groove 12. Since the auxiliary part 32 is movably connected to the second end 333, its movement causes the second end 333 to rotate around the rotating shaft 331, while simultaneously causing the first end 332 to rotate in the opposite direction around the rotating shaft 331, thereby moving the limiting part 31 installed on the first end 332 to the unlock position. This lever arm amplification effect reduces operating resistance, allowing users to unlock with only a small amount of pressure, making it particularly suitable for the elderly, those with weak constitutions, or those recovering from surgery. Furthermore, the constraint effect of the rotating slot 13 on the rotating shaft 331 ensures the accuracy of the rotation trajectory. During frequent rotations, the rotating shaft 331 always rotates smoothly within the slot, preventing unlocking difficulties due to shaking and significantly improving the working stability of the locking assembly 3.

[0067] Specifically, the rotating slot 13 is closed, and the rotating plate 33 is connected to the frame 1 through the rotating shaft 331 located in the rotating slot 13.

[0068] As a preferred example in this embodiment, such as Figure 4 , Figure 5 As shown, the locking assembly 3 also includes an elastic reset member 34 that is connected to the second end 333 and the frame 1 respectively. The elastic reset member 34 can drive the second end 333 to rotate around the rotating shaft 331 so as to drive the limiting part 31 to move from the unlocked position to the locked position.

[0069] The introduction of the elastic reset member 34 enables the locking assembly 3 to have an automatic locking function, improving operational convenience and safety. When the molecular sieve 2 is in normal working condition, the elastic force provided by the elastic reset member 34 keeps the rotating plate 33 in the position that holds the limiting part 31 in the locked position, ensuring that the limiting part 31 is tightly engaged with the limiting structure 21 of the molecular sieve 2. Even when the equipment vibrates or is subjected to external impact, the preload of the elastic reset member 34 can prevent the limiting part 31 from being accidentally unlocked. For example, during the operation of a vehicle-mounted oxygen concentrator, frequent bumps and vibrations may cause the traditional locking structure to loosen, but this design maintains the stability of the lock through the continuous action of the elastic reset member 34.

[0070] When replacing molecular sieve 2, the user pushes the new molecular sieve 2 into the installation slot 111. The limiting structure 21 of molecular sieve 2 pushes the limiting part 31 to overcome the resistance of the elastic reset member 34 and move to the unlocked position. Once the limiting structure 21 is fully in place, the elastic reset member 34 immediately drives the limiting part 31 back to the locked position, achieving automatic locking. This "push-in lock" design is particularly practical in scenarios where both hands are busy. For example, at an emergency scene, medical personnel can quickly insert the new molecular sieve 2 and lock it without additional operation, saving valuable rescue time.

[0071] As a preferred method in this example, such as Figure 4 , Figure 6 , Figure 7 As shown, the elastic reset member 34 is a spring. The frame 1 and the auxiliary part 32 are respectively provided with a first limiting ring groove 14 and a second limiting ring groove 322. The two ends of the spring are respectively engaged with the first limiting ring groove 14 and the second limiting ring groove 322.

[0072] The optimized design of the spring in conjunction with the first limiting ring groove 14 and the second limiting ring groove 322 improves the stability and ease of installation of the elastic reset component 34. During normal operation, the spring is fixed to the first limiting ring groove 14 of the frame 1 and the second limiting ring groove 322 of the auxiliary part 32 via snap-fit ​​connections at both ends, providing stable elastic force. The annular structure of the first limiting ring groove 14 and the second limiting ring groove 322 ensures that the spring will not deflect radially during force application, maintaining stable operation even in environments with frequent vibrations. For example, during the operation of the molecular sieve 2, some vibration may occur; the first limiting ring groove 14 and the second limiting ring groove 322 of this design effectively reduce the probability of the spring shifting due to vibration, ensuring the reliability of the elastic reset function.

[0073] During installation, the spring's snap-fit ​​mechanism requires no tools; simply align the two ends of the spring with the first limiting ring groove 14 and the second limiting ring groove 322 and press to complete the installation. This design significantly shortens the replacement time when changing the molecular sieve 2.

[0074] As another preferred method in this example, such as Figure 10 , Figure 11 As shown, the auxiliary part 32 has a sliding groove 323, and the second end 333 has a guide slider 5 located in the sliding groove 323. When the auxiliary part 32 pushes the second end 333 to move, the guide slider 5 moves in the sliding groove 323 to guide the second end 333 to move relative to the auxiliary part 32.

[0075] The optimized force transmission path of the sliding groove 323 and the guide slider 5 ensures the smoothness and accuracy of the unlocking action. When the user presses the auxiliary part 32, the linear motion of the auxiliary part 32 is converted into the rotational motion of the rotating plate 33 through the cooperation of the sliding groove 323 and the guide slider 5. The shape design of the sliding groove 323 can be precisely customized according to the motion trajectory required for unlocking, ensuring that the limiting part 31 can accurately reach the unlocking position.

[0076] As another preferred method in this example, such as Figure 4 As shown, the frame 1 is provided with a rotating seat 15, which has a rotating arc surface that abuts against the rotating shaft 331.

[0077] The rotating arc surface design of the rotating base 15 provides stable support and a base for the rotation of the rotating shaft 331. The rotating shaft 331 fits tightly against the rotating arc surface, and the radius of curvature of the rotating arc surface is precisely matched with the outer diameter of the rotating shaft 331, ensuring stability during rotation. Furthermore, the smooth surface of the rotating arc surface reduces frictional resistance during rotation, making the unlocking operation smoother. Users only need to apply a small force to drive the rotating plate 33 to rotate, reducing the difficulty of operation, making it especially suitable for elderly users or those recovering from surgery who have weaker hand strength.

[0078] As another preferred method in this example, such as Figure 4 As shown, the frame 1 is provided with a limiting protrusion 16. When the limiting part 31 moves to the unlocking position, the second end 333 abuts against the limiting protrusion 16 to restrict the movement of the second end 333.

[0079] The design of the limiting protrusion 16 provides precise stroke control for the unlocking process. When the user presses the auxiliary part 32 to unlock, the rotating plate 33 rotates around the rotating shaft 331, and the second end 333 moves towards the limiting protrusion 16. When the limiting part 31 is completely disengaged from the limiting structure 21 of the molecular sieve 2, the second end 333 just abuts against the limiting protrusion 16, restricting further rotation of the rotating plate 33. Furthermore, the user can obtain unlocking feedback from the limiting part 31 based on the contact sensation between the second end 333 and the limiting protrusion 16, preventing excessive rotation of the rotating plate 33 due to excessive pressing, thereby preventing damage to components caused by excessive rotation.

[0080] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0081] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0082] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A detachable molecular sieve adsorption device, characterized in that, Includes the frame, molecular sieve, and locking assembly; The frame has a mounting frame, the mounting frame is provided with a mounting groove, and the molecular sieve is removably installed in the mounting groove; The locking assembly includes a limiting part and an auxiliary part. The molecular sieve has a limiting structure adapted to the limiting part. The limiting part has a locking position that engages with the limiting structure and an unlocking position that separates from the limiting structure. The limiting part can be maintained in the locking position under the action of the auxiliary part to lock the molecular sieve in the mounting groove, and can be switched from the locking position to the unlocking position under the action of external force to release the locking of the molecular sieve.

2. The molecular sieve adsorption device according to claim 1, characterized in that, The molecular sieve adsorption device also includes a flexible lifting member installed on the molecular sieve. When the limiting part is in the locked position, the lifting member is sandwiched between the limiting part and the molecular sieve. When the molecular sieve is lifted, the lifting member can drive the limiting part to switch from the locked position to the unlocked position.

3. The molecular sieve adsorption device according to claim 1, characterized in that, The limiting structure is configured as a limiting platform located at the end of the molecular sieve. When the limiting part is in the locked position, the limiting part is engaged with the limiting platform.

4. The molecular sieve adsorption device according to claim 1, characterized in that, The frame has a limiting groove, the auxiliary part is located in the limiting groove and has a pressing surface, the auxiliary part can be moved along the direction of the limiting groove by the force applied to the pressing surface, thereby driving the limiting part to switch from the locked position to the unlocked position.

5. The molecular sieve adsorption device according to claim 4, characterized in that, The locking assembly further includes a rotating plate, which has a rotating shaft and a first end and a second end located at both ends of the rotating shaft. The limiting part is located at the first end, and the auxiliary part is movably connected to the second end. The frame has a rotating slot, and the rotating shaft is located in the rotating slot and can rotate in the rotating slot. The auxiliary part can push the second end to rotate around the rotating shaft, so as to drive the limiting part to move from the locked position to the unlocked position.

6. The molecular sieve adsorption device according to claim 5, characterized in that, The locking assembly further includes an elastic reset member connected to the second end and the frame respectively. The elastic reset member can drive the second end to rotate around the rotating shaft, so as to drive the limiting part to move from the unlocked position to the locked position.

7. The molecular sieve adsorption device according to claim 6, characterized in that, The elastic reset component is a spring. The frame and the auxiliary part are respectively provided with a first limiting ring groove and a second limiting ring groove. The two ends of the spring are respectively engaged with the first limiting ring groove and the second limiting ring groove.

8. The molecular sieve adsorption device according to claim 5, characterized in that, The auxiliary part has a sliding groove, and the second end has a guide slider located in the sliding groove. When the auxiliary part pushes the second end to move, the guide slider moves in the sliding groove to guide the second end to move relative to the auxiliary part.

9. The molecular sieve adsorption device according to claim 5, characterized in that, The frame is provided with a rotating seat, the rotating seat having a rotating arc surface that abuts against the rotating shaft, the rotating arc surface abutting against the rotating shaft.

10. The molecular sieve adsorption device according to claim 5, characterized in that, The frame is provided with a limiting protrusion. When the limiting part moves to the unlocked position, the second end abuts against the limiting protrusion to restrict the movement of the second end.

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