Molecular sieve adsorption device convenient to disassemble

Abstract

The invention discloses a molecular sieve adsorption device convenient to disassemble. The molecular sieve adsorption device comprises a rack, a molecular sieve and a locking assembly, the rack is provided with a mounting frame, the mounting frame is provided with a mounting groove, and the molecular sieve is arranged in the mounting groove in a drawable manner; 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 locked with the limiting structure and an unlocking position separated from the limiting structure, and the limiting part can be maintained at the locking position under the action of the auxiliary part so as to lock the molecular sieve in the mounting groove; and the locking device can be switched from the locking position to the unlocking position under the action of external force so as to unlock the molecular sieve. When the performance of the molecular sieve is reduced due to long-term use and impurity adsorption, a user can extract an old molecular sieve and insert a new molecular sieve only by operating the auxiliary part to unlock or directly operating the limiting part to be separated from the limiting structure in manners such as pressing, and the operation is simple and visual.

Description

Technical Field

[0001] The present application belongs to the technical field of respiratory therapy equipment, and specifically relates to a detachable molecular sieve adsorption device. Background Art

[0002] A molecular sieve adsorption unit is a critical medical device that separates oxygen from air through physical adsorption. Its core components typically include two alternating molecular sieve adsorption towers and an oxygen storage chamber for oxygen-enriched gas. As a core component of oxygen production equipment, the performance and stability of the molecular sieve adsorption unit directly impacts the efficiency and purity of oxygen separation.

[0003] During long-term operation, molecular sieves inevitably face multiple deterioration factors: dust, oil and other impurities in the air are continuously adsorbed in the molecular sieve pore structure, occupying the effective adsorption sites of the molecular sieve, weakening the molecular sieve's selective adsorption capacity for gases such as nitrogen; water molecules in the environment have a strong affinity with the molecular sieve and may occupy the adsorption sites to form a space effect, hindering the normal adsorption process of the target gas molecules; the frequent pressurization and decompression cycles of the oxygen generator cause continuous friction and collision between the molecular sieve particles, resulting in particle breakage and pulverization, and a sharp decrease in the effective adsorption area; secondly, the molecular sieve crystal structure gradually changes with the length of use, and its adsorption performance shows irreversible attenuation. The above combined effects ultimately lead to a significant decrease in the oxygen output concentration of the molecular sieve adsorption device, so the molecular sieve needs to be replaced regularly to maintain the performance of the equipment.

[0004] In the prior art, molecular sieves are generally installed on the frame by rigid bolt fixation or latch-type snap-on structure. This traditional connection method has significant defects: the disassembly and replacement process requires the use of special tools to release multiple mechanical fasteners step by step, the operation process is cumbersome and time-consuming, and the maintenance efficiency is low; the complex disassembly and assembly structure requires high professional expertise from the operator, which greatly increases the equipment downtime and labor maintenance costs; especially when the internal space of the equipment is narrow, conventional locking mechanisms such as threaded connections and embedded snaps are difficult to achieve quick unlocking with one hand, and the operational convenience is seriously insufficient. The above problems make it difficult for users to replace molecular sieves independently, causing inconvenience to users. Summary of the Invention

[0005] The present application provides a detachable molecular sieve adsorption device to solve the technical problem of the molecular sieve adsorption device in traditional oxygen production equipment having a complex disassembly and assembly structure and being difficult to assemble and disassemble.

[0006] The technical solutions adopted in this application are:

[0007] A detachable molecular sieve adsorption device comprises a frame, a molecular sieve and a locking assembly; the frame has a mounting frame provided with a mounting slot, and the molecular sieve can be pulled out and installed in the mounting slot; the locking assembly comprises a limiting portion and an auxiliary portion, the molecular sieve has a limiting structure adapted to the limiting portion, the limiting portion has a locking position locked with the limiting structure and an unlocking position separated from the limiting structure, the limiting portion can be maintained in the locking position under the action of the auxiliary portion to lock the molecular sieve in the mounting slot, and can be switched from the locking position to the unlocking position under the action of an external force to release the lock 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 pulling member installed on the molecular sieve. When the limiting part is in the locking position, the pulling member is clamped between the limiting part and the molecular sieve. The pulling member can drive the limiting part to switch from the locking position to the unlocking position when lifting the molecular sieve.

[0010] The limiting structure is constructed as a limiting platform located at the end of the molecular sieve. When the limiting portion is in the locking position, the limiting portion is buckled with the limiting platform.

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

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

[0013] The locking assembly further includes an elastic return member connected to the second end and the frame respectively, and the elastic return member can drive the second end to rotate around the rotation axis to drive the limiting portion to move from the unlocking position to the locking position.

[0014] The elastic return member is a spring, and the frame and the auxiliary part are respectively provided with a first limiting ring groove and a second limiting ring groove, and both ends of the spring are respectively engaged with the first limiting ring groove and the second limiting ring groove.

[0015] The auxiliary part is provided with a sliding groove, and the second end is provided with 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, and the rotating seat has a rotating arc surface abutting against the rotating shaft, and the rotating arc surface abuts against the rotating shaft.

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

[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 the present application includes a frame and a molecular sieve, wherein the frame is provided with a mounting frame specifically for mounting the molecular sieve, and the mounting frame is provided with a mounting groove adapted to the shape of the molecular sieve. By installing the molecular sieve in a retractable manner in the mounting groove, the efficiency of replacing the molecular sieve and the convenience of operation are significantly improved. When the molecular sieve adsorption device is in normal working state, the limiting part is tightly locked with the limiting structure of the molecular sieve, and the auxiliary part maintains the limiting part in the locked position through its own force, ensuring that the molecular sieve can be firmly fixed in the mounting groove when it is working normally. For example, when the medical oxygen concentrator is in continuous operation, the reliable locking of the molecular sieve by the limiting part can prevent it from being displaced due to vibration, thereby ensuring the stability of the oxygen separation efficiency. When the molecular sieve needs to be replaced, the user only needs to apply external force (such as pressing or dialing) to the auxiliary part, and the limiting part can be switched from the locked position to the unlocked position, releasing the constraint on the molecular sieve. Alternatively, the user can directly apply pressure to the limiter, moving it to the unlocked position, where it separates from the retaining structure. This releases the locking assembly from the molecular sieve, allowing it to be removed from the mounting slot. This tool-free operation is crucial in emergency situations, allowing medical staff to replace the molecular sieve in seconds, ensuring continuous oxygen supply.

[0020] In home care scenarios, elderly users or non-professionals can easily operate the auxiliary part or directly act on the limiting part to unlock the molecular sieve without the help of disassembly tools such as screwdrivers. For example, when the molecular sieve's performance deteriorates due to long-term use and adsorption of impurities, the user only needs to operate the auxiliary part to unlock it by pressing or directly operate the limiting part to separate from the limiting structure to pull out the old molecular sieve and insert a new one. The operation is simple and intuitive. In addition, for built-in oxygen concentrators, the pull-out design avoids the tedious steps of traditional disassembly of the entire outer shell. For example, vehicle-mounted oxygen concentrators or portable oxygen concentrators have narrow internal space. This device can replace the molecular sieve by pulling out from the top, pulling out from the side, or other methods without disassembling the complex internal structure.

[0021] 2. As a preferred embodiment of the present application, when the molecular sieve is in operation, the lifting member is sandwiched between the limiting portion 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, which deforms and gradually straightens, while driving the limiting portion to move and unlock with the limiting structure, switching it from a locked position to an unlocked position. This further reduces the difficulty of removing the molecular sieve for the user. When the user needs to replace the molecular sieve, they only need to use one hand on the frame or other place, and use the other hand to pull up the flexible lifting member. When the lifting member lifts the molecular sieve, the limiting portion moves to the unlocked position, and the molecular sieve is pulled out of the installation slot under the action of the flexible lifting member.

[0022] 3. As a preferred embodiment of the present application, the snap-fit structure of the limit table and the limit part provides a reliable locking force through planar contact. When the molecular sieve is in working condition, the limit part snaps into the limit table at the end of the molecular sieve to form a larger contact area, evenly disperse the pressure, and effectively reduce the probability of displacement of the molecular sieve due to vibration or airflow impact. For example, in the high-pressure adsorption stage, the close fit between the limit table and the limit part can withstand the pressure changes inside the molecular sieve and ensure that the molecular sieve is stably placed in the installation groove. In addition, the snap-fit structure composed of the limit table and the limit part can also withstand part of the lateral impact force of the molecular sieve, ensuring the stable installation of the molecular sieve when the equipment moves or is accidentally bumped.

[0023] 4. As a preferred embodiment of this application, the design of the pressing surface further enhances the user's ease of unlocking the stopper. When the molecular sieve is in normal operation, the auxiliary part is located within the stopper groove, with the pressing surface flush with or slightly recessed from the frame surface, preventing accidental unlocking. For example, during 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 simply presses the pressing surface of the auxiliary part, which moves along the stopper groove and unlocks the stopper. This external operation method is particularly suitable for portable oxygen concentrators with compact layouts. The locking assembly requires a small working space, and only a small operating space is required to unlock the stopper. In addition, the stopper groove guides the auxiliary part, ensuring the accuracy of the unlocking action. During frequent operation, the auxiliary part always moves along a fixed trajectory, preventing unlocking failures due to deviation. This stability is particularly important for elderly users or those with poor manual dexterity, significantly reducing the operational difficulty for such users.

[0024] 5. As a preferred embodiment of the present application, the linkage design of 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, thereby achieving force amplification and precise control. Specifically, when the auxiliary part is unlocked, the auxiliary part slides along the extension direction of the limit slot. Since the auxiliary part is movably connected to the second end, the auxiliary part drives the second end to rotate around the rotating shaft when it moves, and at the same time causes the first end to rotate in the opposite direction around the rotating shaft, thereby driving the limit part installed on the first end to move to the unlocked position. This force arm amplification effect reduces the operating resistance, and the user only needs a small pressing force to achieve unlocking, which is particularly suitable for the elderly and weak or people recovering from surgery. In addition, the restraining effect of the rotating slot on the rotating shaft ensures the accuracy of the rotation trajectory. During frequent rotation, the rotating shaft always rotates smoothly in the slot, avoiding poor unlocking due to shaking, which greatly improves the working stability of the locking assembly.

[0025] 6. As a preferred embodiment of the present application, the introduction of the elastic reset member enables the locking assembly to have an automatic locking function, thereby improving the convenience and safety of operation. When the molecular sieve is in normal working condition, the elastic force provided by the elastic reset member keeps the rotating plate in a position to maintain the limit part in the locking position, ensuring that the limit part and the limit structure of the molecular sieve are tightly fastened. Even when the equipment vibrates or is impacted by external forces, the pre-tightening force of the elastic reset member can prevent the limit part from being accidentally unlocked. For example, during the driving of the 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 molecular sieve's limiting structure pushes the limiting part to overcome the resistance of the elastic reset member and move to the unlocked position. Once the limiting structure is fully in place, the elastic reset member immediately drives the limiting part back to the locked position, achieving automatic locking. This "push-to-lock" design is particularly practical in scenarios where both hands are busy. For example, at the emergency scene, medical staff can quickly insert the new molecular sieve and complete the locking without additional operation, saving valuable rescue time. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0028] Figure 1 This is a structural diagram of a lower rack in one embodiment of the present application;

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

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

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

[0032] Figure 5 A schematic structural diagram of a locking assembly according to an embodiment of the present application;

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

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

[0035] Figure 8 This is a structural diagram of the lower frame structure according to an embodiment of the present application;

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

[0037] Figure 10 This is a structural diagram of the auxiliary part in one embodiment of the present application;

[0038] Figure 11 This is a structural schematic diagram of the lower limit portion of an embodiment of the present application.

[0039] List of parts 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 limiting structures;

[0042] 3 locking assembly, 31 limiting portion, 32 auxiliary portion, 321 pressing surface, 322 second limiting ring groove, 323 sliding groove, 33 rotating plate, 331 rotating shaft, 332 first end portion, 333 second end portion, 34 elastic reset member;

[0043] 4 flexible lifting parts;

[0044] 5 guide sliders. DETAILED DESCRIPTION

[0045] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0046] The following description sets forth many specific details to facilitate a thorough understanding of the present application. However, the present application may also be implemented in other ways than those described herein, and therefore, the scope of protection of the present application is not limited by the specific embodiments disclosed below. It should be noted that the embodiments of the present application and the features of each embodiment may be combined with each other unless there is a conflict.

[0047] In addition, in the description of the present application, it should be understood that the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present application.

[0048] In this application, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0049] In this application, unless otherwise expressly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any 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, the mounting frame 11 is provided with a mounting groove 111, and the molecular sieve 2 can be pulled out and installed in the mounting groove 111; the locking assembly 3 includes a limiting portion 31 and an auxiliary portion 32, the molecular sieve 2 has a limiting structure 21 adapted to the limiting portion 31, the limiting portion 31 has a locking position locked with the limiting structure 21 and an unlocking position separated from the limiting structure 21, the limiting portion 31 can be maintained in the locking position under the action of the auxiliary portion 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 an external force to release the lock of the molecular sieve 2.

[0051] The molecular sieve adsorption device of the present application includes a frame 1 and a molecular sieve 2, wherein the frame 1 is provided with a mounting frame 11 specifically for mounting the molecular sieve 2, and the mounting frame 11 is provided with a mounting groove 111 adapted to the shape of the molecular sieve 2. By pulling the molecular sieve 2 into the mounting groove 111, the replacement efficiency and operational convenience of the molecular sieve 2 are significantly improved. When the molecular sieve adsorption device is in normal working state, the limiting portion 31 is tightly locked with the limiting structure 21 of the molecular sieve 2, and the auxiliary portion 32 maintains the limiting portion 31 in the locked position through its own force, ensuring that the molecular sieve 2 can be firmly fixed in the mounting groove 111 when it is working normally. For example, when the medical oxygen concentrator is continuously running, the reliable locking of the molecular sieve 2 by the limiting portion 31 can prevent it from being displaced due to vibration, thereby ensuring the stability of the oxygen separation efficiency. When the molecular sieve 2 needs to be replaced, the user only needs to apply external force (such as pressing or toggling) to the auxiliary portion 32, and the limiting portion 31 can be switched 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 limiter 31, moving it to an unlocked position separated from the limiter structure 21. At this point, the locking assembly 3 releases the lock on the molecular sieve 2, allowing the molecular sieve 2 to be removed from the mounting slot 111. This tool-free operation is particularly critical in emergency situations, allowing medical staff to replace the molecular sieve 2 in seconds, ensuring continuous oxygen supply.

[0052] In a home care scenario, elderly users or non-professionals can easily operate the auxiliary part 32 or directly act on the limiting part 31 to unlock the molecular sieve 2 without the need for disassembly tools such as screwdrivers. For example, when the performance of the molecular sieve 2 deteriorates due to long-term use of adsorbed impurities, the user only needs to operate the auxiliary part 32 to unlock it by pressing or directly operate the limiting part 31 to separate from the limiting structure 21, and then the old molecular sieve 2 can be pulled out and the new molecular sieve 2 can be inserted. The operation is simple and intuitive. In addition, for built-in oxygen concentrators, the pull-out design avoids the tedious steps of traditional disassembly of the entire shell. For example, vehicle-mounted oxygen concentrators or portable oxygen concentrators have narrow internal space. The device can replace the molecular sieve 2 by pulling out from the top, pulling out from the side or other methods without disassembling the complex internal structure.

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

[0054] When the molecular sieve 2 is in operation, the lifting member is sandwiched between the limiting portion 31 and the molecular sieve 2, and does 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, which deforms and gradually straightens, while driving the limiting portion 31 to move and unlock with the limiting structure 21, switching it from the locked position to the unlocked position. In this way, the difficulty of the user removing the molecular sieve 2 is further reduced. When the user needs to replace the molecular sieve 2, only one hand is required to act on the frame 1 or other places, and the other hand is required to operate the flexible lifting member 4 to pull up. The flexible lifting member 4 lifts the molecular sieve 2 while the limiting portion 31 moves to the unlocked position. The molecular sieve 2 is pulled out of the installation slot 111 under the action of the flexible lifting member 4.

[0055] Specifically, the flexible lifting member 4 is a nylon member made of nylon material. The top of the flexible lifting member 4 is provided with a lifting opening for the user to pass through and hold.

[0056] The present application does not limit the locking method of the limiting portion 31 and the limiting structure 21 and their structural forms, and they may adopt any of the following embodiments:

[0057] Implementation method 1: 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 portion 31 is in the locking position, the limiting portion 31 is buckled with the limiting platform.

[0058] The snap-fit structure of the limit table and the limit portion 31 provides a reliable locking force through planar contact. When the molecular sieve 2 is in working condition, the limit portion 31 snaps onto the limit table at the end of the molecular sieve 2 to form a larger contact area, evenly disperse the pressure, and effectively reduce the probability of displacement of the molecular sieve 2 due to vibration or airflow impact. For example, in the high-pressure adsorption stage, the close fit between the limit table and the limit portion 31 can withstand the pressure changes inside the molecular sieve 2, ensuring that the molecular sieve 2 is stably placed in the installation groove 111. In addition, the snap-fit structure composed of the limit table and the limit portion 31 can also withstand part 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 accidentally bumped.

[0059] Embodiment 2: The limiting structure is a groove provided on the molecular sieve, and the limiting portion is an elastic member. When the limiting portion is in the locked position, the limiting portion is located in the groove and has an interference fit with the groove.

[0060] In this embodiment, the stopper is locked with the stopper structure by an interference fit and is locked with the groove by its own elastic preload. When the user needs to unlock the molecular sieve, they can manually remove the stopper from the groove or control the movement of the auxiliary part to drive the stopper out of the groove.

[0061] Implementation method three: 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 cooperate through magnetic attraction to lock the molecular sieve. When the molecular sieve needs to be unlocked, the auxiliary part can be controlled to move, which drives the limiting part to overcome the magnetic attraction between it and the limiting structure. Alternatively, the user can directly apply pressure to the limiting part to overcome the magnetic attraction and unlock the molecular sieve.

[0062] As a preferred embodiment of the present application, Figure 1 、 Figure 2 As shown, the frame 1 is provided with a limiting slot 12, the auxiliary portion 32 is located in the limiting slot 12 and is provided with a pressing surface 321, and the auxiliary portion 32 can be acted upon by the force applied to the pressing surface 321 to move along the direction of the limiting slot 12, thereby driving the limiting portion 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 stopper 31. When the molecular sieve 2 is in normal operation, the auxiliary portion 32 is located within the stopper groove 12, with the pressing surface 321 flush with or slightly recessed from the surface of the frame 1, preventing accidental unlocking. For example, during transportation of the oxygen concentrator, this design prevents the auxiliary portion 32 from being triggered by bumps and collisions, ensuring that the molecular sieve 2 remains locked. When the molecular sieve 2 needs to be replaced, the user simply presses the pressing surface 321 of the auxiliary portion 32, causing the auxiliary portion 32 to move along the stopper groove 12 and unlock the stopper 31. This external operation method is particularly suitable for portable oxygen concentrators with compact spatial layouts. The working space required for the locking assembly 3 is relatively small, and only a small operating space is required to unlock the stopper 31. In addition, the guiding effect of the stopper groove 12 on the auxiliary portion 32 ensures the accuracy of the unlocking action. During frequent operation, the auxiliary portion 32 always moves along a fixed trajectory, preventing unlocking failures due to deviation. This stability is particularly important for elderly users or people with poor hand dexterity, greatly reducing the operating difficulty for such users.

[0064] Specifically, the retaining groove 12 is exposed to the exterior of the frame 1. When the retaining portion 31 is in the locked position, the pressing surface 321 is located within the retaining groove 12. The user can easily touch the pressing surface 321 within the retaining groove 12, but the pressing surface 321 is not easily touched by external components. Furthermore, the size of the retaining groove 12 is compatible with the size of the auxiliary portion 32, allowing the auxiliary portion 32 to slide along the extension direction of the retaining groove 12 without deflection.

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

[0066] The linkage between the rotating plate 33 and the rotating shaft 331 converts the linear motion of the auxiliary portion 32 into rotational motion of the rotating plate 333 about the rotating shaft 331, achieving force amplification and precise control. Specifically, when the auxiliary portion 32 is unlocked, it slides along the extension of the retaining slot 12. Because the auxiliary portion 32 is movably connected to the second end portion 333, the movement of the auxiliary portion 32 causes the second end portion 333 to rotate about the rotating shaft 331, while simultaneously causing the first end portion 332 to rotate in the opposite direction about the rotating shaft 331, thereby driving the retaining portion 31 mounted on the first end portion 332 to the unlocked position. This force-arm amplification effect reduces operational resistance, allowing users to unlock the lock with minimal pressure, making it particularly suitable for the elderly, frail, or those recovering from surgery. Furthermore, the restraining effect of the rotating slot 13 on the rotating shaft 331 ensures a precise rotation trajectory. Even during frequent rotation, the rotating shaft 331 rotates smoothly within the slot, preventing loose unlocking due to shaking and significantly improving the operational stability of the locking assembly 3.

[0067] Specifically, the rotating slot 13 is closed, and the rotating plate 33 is hung on the frame 1 via a rotating shaft 331 located in the rotating slot 13 .

[0068] As a preferred example under this embodiment, Figure 4 、 Figure 5 As shown, the locking assembly 3 also includes an elastic return member 34 connected to the second end 333 and the frame 1 respectively. The elastic return member 34 can drive the second end 333 to rotate around the rotation axis 331 to drive the limiting portion 31 to move from the unlocking position to the locking position.

[0069] The introduction of the elastic reset member 34 enables the locking assembly 3 to have an automatic locking function, which improves the convenience and safety of operation. 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 a position to maintain the limit part 31 in the locked position, ensuring that the limit part 31 is tightly fastened to the limit structure 21 of the molecular sieve 2. Even when the equipment vibrates or is impacted by external forces, the pre-tightening force of the elastic reset member 34 can prevent the limit part 31 from being accidentally unlocked. For example, during the driving of the 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 34.

[0070] When replacing the molecular sieve 2, the user pushes the new molecular sieve 2 into the installation slot 111, and the limiting structure 21 of the molecular sieve 2 pushes the limiting portion 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 portion 31 back to the locked position, achieving automatic locking. This "push-in and lock" design is particularly practical in scenarios where both hands are busy. For example, at the emergency scene, medical staff can quickly insert a new molecular sieve 2 and complete the locking without additional operation, saving valuable rescue time.

[0071] As a preferred method in this example, Figure 4 、 Figure 6 、 Figure 7 As shown, the elastic return member 34 is a spring, and 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, and 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 matching design of the spring and the first limiting ring groove 14 and the second limiting ring groove 322 optimizes the stability and installation convenience of the elastic reset member 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 by snap-fitting at both ends, providing a 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 be radially offset during the force-bearing process, and can maintain stable operation even in an environment with frequent vibrations. For example, when the molecular sieve 2 is working, a certain vibration may be generated, and the first limiting ring groove 14 and the second limiting ring groove 322 of the present design can effectively reduce the probability of the spring being displaced by the vibration, thereby ensuring the reliability of the elastic reset function.

[0073] During installation, the spring's snap-fitting design requires no tools, and installation can be completed simply by aligning the two ends of the spring with the first limiting ring groove 14 and the second limiting ring groove 322. This design significantly shortens the replacement time when the molecular sieve 2 is replaced.

[0074] As another preferred method in this example, Figure 10 、 Figure 11 As shown, the auxiliary part 32 is provided with a sliding groove 323, and the second end 333 is provided with 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 coordinated structure of the sliding groove 323 and the guide slider 5 optimizes the force transmission path, ensuring smooth and precise unlocking. When the user presses the auxiliary portion 32, the linear motion of the auxiliary portion 32 is converted into rotational motion of the rotating plate 33 through the coordination of the sliding groove 323 and the guide slider 5. The shape of the sliding groove 323 can be precisely customized to the desired unlocking motion trajectory, ensuring that the stopper 31 accurately reaches the unlocking position.

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

[0077] The curved rotating surface of the rotating base 15 provides stable support and rotational support for the rotating shaft 331. The rotating shaft 331 fits snugly against the curved surface, and the radius of curvature of the curved surface precisely matches the outer diameter of the rotating shaft 331, ensuring stability during rotation. The smooth surface of the curved surface also reduces frictional resistance during rotation, making the unlocking operation smoother. The user only needs to apply minimal force to rotate the rotating plate 33, reducing operational difficulty. This is particularly suitable for those with reduced hand strength, such as the elderly or those recovering from surgery.

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

[0079] The design of the limiting protrusion 16 provides precise travel control during the unlocking process. When the user presses the auxiliary portion 32 to unlock, the rotating plate 33 rotates about the rotating axis 331, and the second end 333 moves toward the limiting protrusion 16. When the limiting portion 31 is completely separated from the limiting structure 21 of the molecular sieve 2, the second end 333 contacts the limiting protrusion 16, limiting further rotation of the rotating plate 33. The user can also obtain unlocking feedback from the contact between the second end 333 and the limiting protrusion 16, preventing the user from over-pressing the rotating plate 33, which could cause excessive rotation of the rotating plate 33 and thus prevent component damage caused by excessive rotation.

[0080] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

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

[0082] The foregoing is merely an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should all be included within the scope of the claims of the present application.

Claims

1. A detachable molecular sieve adsorption device, characterized in that: Including a frame, molecular sieve and locking components; The rack has a mounting frame, the mounting frame is provided with a mounting slot, and the molecular sieve can be pulled out and installed in the mounting slot; The locking assembly includes a limiting portion and an auxiliary portion. The molecular sieve has a limiting structure adapted to the limiting portion. The limiting portion has a locking position locked with the limiting structure and an unlocking position separated from the limiting structure. The limiting portion can be maintained in the locking position under the action of the auxiliary portion to lock the molecular sieve in the installation groove, and can be switched from the locking position to the unlocking position under the action of external force to release the lock 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 pulling member installed on the molecular sieve. When the limiting part is in the locking position, the pulling member is clamped between the limiting part and the molecular sieve. The pulling member can drive the limiting part to switch from the locking position to the unlocking position when lifting the molecular sieve.

3. The molecular sieve adsorption device according to claim 1, characterized in that: The limiting structure is constructed as a limiting platform located at the end of the molecular sieve. When the limiting portion is in the locking position, the limiting portion is buckled with the limiting platform.

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

5. The molecular sieve adsorption device according to claim 4, characterized in that: The locking assembly also includes a rotating plate, which is provided with a rotating shaft, and a first end and a second end respectively located at both ends of the rotating shaft, the limiting portion is located at the first end, the auxiliary portion is movably connected to the second end, the frame is provided with a rotating slot, the rotating shaft is located in the rotating slot and can rotate in the rotating slot, the auxiliary portion can push the second end to rotate around the rotating shaft, so as to drive the limiting portion 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 return member connected to the second end and the frame respectively, and the elastic return member can drive the second end to rotate around the rotation axis to drive the limiting portion to move from the unlocking position to the locking position.

7. The molecular sieve adsorption device according to claim 6, characterized in that: The elastic return member is a spring, and the frame and the auxiliary part are respectively provided with a first limiting ring groove and a second limiting ring groove, and both 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 is provided with a sliding groove, and the second end is provided with 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, and the rotating seat has a rotating arc surface abutting against the rotating shaft, and the rotating arc surface abuts 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 portion moves to the unlocking position, the second end portion abuts against the limiting protrusion to limit the movement of the second end portion.

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