Adsorption tower for preventing molecular sieve pulverization of medical oxygen generator

Abstract

The invention discloses an adsorption tower for preventing molecular sieve pulverization of a medical oxygen generator, and belongs to the technical field of oxygen generators, the adsorption tower comprises an adsorption tower shell, two molecular sieve bed plates and a hollow column are arranged in the adsorption tower shell, and spiral heating pipes are laid in the side walls of the hollow column and the adsorption tower shell; a pressing assembly, a temperature control assembly and a pressure equalizing assembly are arranged in the adsorption tower shell. By arranging the pressing assembly, a plurality of pressing springs are used for pushing a plurality of layers of pressing plates downwards to stably press a molecular sieve, so that the pulverization phenomenon caused by movement of the molecular sieve is avoided; through cooperative arrangement of the spiral heating pipe and the temperature control assembly, the molecular sieve can be heated and dehumidified, the stability of the mechanical strength of the molecular sieve is guaranteed, and the anti-pulverization effect is improved; and by arranging the uniform pressure assembly, the gas can be uniformly dispersed to reduce the impact on the molecular sieve below, so that the pulverization prevention effect on the molecular sieve is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of oxygen generators, and specifically to an adsorption tower for preventing molecular sieve pulverization in a medical oxygen generator. Background Technique

[0002] A medical oxygen generator is a medical device that extracts oxygen from the air using technologies such as pressure swing adsorption. It is applicable to medical institutions and families for oxygen therapy and healthcare. In the adsorption tower of the medical oxygen generator, a molecular sieve is filled. By using the physical adsorption and desorption technologies of the molecular sieve, nitrogen and carbon dioxide in the air are adsorbed, and the unadsorbed oxygen is collected and purified to obtain relatively high-purity oxygen for patients to use.

[0003] The prior art has the following defects: First, when most adsorption towers are in use, the air flow usually penetrates the inside of the adsorption tower from bottom to top. After long-term use, the molecular sieve is prone to pulverization, resulting in a low filtration and separation effect of the molecular sieve, making the use of the adsorption tower inconvenient. Second, at the initial operation stage of the adsorption tower, the instantaneous impact of air acts on the molecular sieve, causing the pulverization of the internal particle structure of the molecular sieve. These powders will block the gas channels in the adsorption tower and hinder the normal flow of gas, not only reducing the oxygen production efficiency but also affecting the oxygen production quality as the air flows. To overcome the first defect, the prior art (Chinese patent with application number 202322655197.X and application date September 28, 2023) discloses a gravity elastic pressing adsorption tower for preventing the pulverization of the molecular sieve in the adsorption tower. By rotating the rotating handwheel, the bevel gear set rotates, and then the threaded rod rotates. The threaded rod continues to displace the push rod, enabling the push rod to push the coconut shell pad, and the coconut shell pad can squeeze the molecular sieve body, so that the molecular sieve body can avoid pulverization after long-term use, solving the first defect mentioned above. To overcome the second defect, the prior art (Chinese patent with application number 202411746297.6 and application date December 2, 2024) discloses an adsorption tower for an oxygen-making host to prevent the pulverization of the molecular sieve. The pressure dividing plate is installed inside the bottom cover through the reset mechanism. When air enters, it first pushes the pressure dividing plate to move, reducing the intake air impact. Subsequently, the air is shunted through multiple filter seats, ensuring that the shunted air acts on the molecular sieve body evenly, avoiding premature pulverization due to local long-term impact, and enabling the air to pass through the molecular sieve body evenly to achieve gas separation, improving the oxygen production quality and efficiency, solving the second defect mentioned above. Although the prior art 1 and the prior art 2 can overcome the above defects, in the actual use of medical oxygen generators, if the molecular sieve absorbs moisture and water, its mechanical strength will decrease. At the same time, if the molecular sieve bed layer is not effectively compacted, the molecular sieve will move during the operation of the equipment. These two situations will also cause the pulverization of the molecular sieve. However, the above two technical solutions can only inhibit the pulverization of the molecular sieve caused by uneven intake air impact and cannot prevent the pulverization of the molecular sieve caused by other reasons, resulting in an insufficiently comprehensive and powerful anti-pulverization effect on the molecular sieve.

[0004] In view of the above problems, it is urgent to innovate and design on the basis of the original equipment. Therefore, we propose an adsorption tower for preventing the pulverization of the molecular sieve in a medical oxygen generator, which can well solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide an adsorption tower for preventing molecular sieve pulverization in a medical oxygen generator, so as to solve the problem proposed in the above background technology that in the actual use process of the current medical oxygen generators on the market, if the molecular sieve is affected by moisture and absorbs water, its mechanical strength will decrease. At the same time, if the molecular sieve bed layer is not effectively compacted, it will cause the molecular sieve to move during the operation of the equipment. These two situations will also cause the pulverization of the molecular sieve. However, the above two technical solutions can only inhibit the pulverization of the molecular sieve caused by uneven intake air impact, but cannot prevent the pulverization of the molecular sieve caused by other reasons, resulting in an insufficiently comprehensive and powerful anti-pulverization effect on the molecular sieve.

[0006] To achieve the above purpose, the present invention provides the following technical solution: An adsorption tower for preventing molecular sieve pulverization in a medical oxygen generator, comprising: an adsorption tower housing, an air inlet pipe and an air outlet pipe are respectively arranged at the bottom end and the top end of the adsorption tower housing, and two molecular sieve bed plates are fixedly connected to the inner wall of the adsorption tower housing, and the space between the two molecular sieve bed plates is used to hold and press the molecular sieve; a hollow column is fixedly connected to the inside of the two molecular sieve bed plates, a pressing assembly is arranged outside the hollow column, the pressing assembly includes a plurality of pressing plates vertically sliding between the two molecular sieve bed plates, and a plurality of connecting vertical rods are fixedly connected between the pressing plates. The top ends of the pressing plates at the uppermost position are fixedly connected with a plurality of connecting rods, and the top ends of the connecting rods penetrate above the molecular sieve bed plate and are fixedly connected together with a top plate, and a pressing spring is fixedly connected to the outside of each connecting rod between the top plate and the upper molecular sieve bed plate; spiral heating tubes are laid on the inner side walls of the hollow column and the adsorption tower housing, and a temperature control assembly for turning on and controlling the temperature of the spiral heating tubes is arranged at the top end inside the hollow column to perform heating and moisture removal operations on the molecular sieve; a pressure equalizing assembly is arranged at the bottom end inside the adsorption tower housing to evenly disperse the gas entering from the air inlet pipe to reduce its impact on the lower molecular sieve bed plate and the molecular sieve.

[0007] Preferably, the pressing plate is integrally hollowed out, the connecting vertical rods are distributed on its inner and outer sides, and there is a moving gap between the lowermost pressing plate and the lower molecular sieve bed plate.

[0008] Preferably, the temperature control assembly includes a pressing block fixedly connected to the bottom inside of the top plate, a fixed seat is fixedly connected to the top inner wall of the hollow column, a moving block is limited and slidably connected to the inner side of the top end of the fixed seat, a rack is fixedly connected to the bottom end of the moving block, a temperature control knob is rotatably connected to the inner wall of the fixed seat, and the temperature control knob is electrically connected to the spiral heating tube. A plurality of protruding teeth are formed on the outer wall of the temperature control knob in a circumferentially uniform distribution, and the rack can be engaged with a plurality of protruding teeth. A control panel is fixedly installed on the outer side wall of the adsorption tower housing, and the control panel is used to monitor the temperature and humidity conditions inside the adsorption tower housing and can intelligently control the temperature of the spiral heating tube.

[0009] Preferably, a limiting rotating block is fixedly connected to the end wall of the temperature control knob, and the limiting rotating block is rotatably connected to the inner wall of the fixed seat. A torsion spring is fixedly connected between the protruding teeth and the inner wall of the fixed seat on the outer side of the limiting rotating block.

[0010] Preferably, the pressure equalizing assembly includes a threaded seat fixedly connected to the bottom of the inner wall of the hollow column. A threaded rod is threadedly connected to the inside of the threaded seat. Among them, thread protrusions are formed on the outer wall of only the part of the threaded rod threadedly connected to the threaded seat. The top of the threaded rod is fixedly connected to a piston plate, and the piston plate seals and slides inside the hollow column. The bottom of the threaded rod is fixedly connected to a mounting seat, and evenly distributed pressure equalizing fan blades are fixedly connected to the outer wall of the mounting seat. A driving mechanism is arranged below the pressure equalizing fan blades.

[0011] Preferably, the driving mechanism includes a motor fixedly installed on the outer side wall of the adsorption tower housing. The output shaft on one side of the motor penetrates to the inside of the adsorption tower housing and is fixedly connected to a rotating shaft. A first bevel gear is fixedly connected to one side of the rotating shaft. A second bevel gear is fixedly connected to the bottom end of the mounting seat. When the threaded rod moves down to the limit, the first bevel gear meshes with the second bevel gear, and the control panel can control the operation of the motor.

[0012] Preferably, a sealing bearing is installed at the penetrating and rotating part of the rotating shaft and the side wall of the adsorption tower housing to reduce the friction between the two and can also ensure the sealing effect of the adsorption tower housing.

[0013] Preferably, flow guiding covers are fixedly connected to the ends of the air inlet pipe and the air outlet pipe. The flow guiding covers are of an outwardly expanding structure and cover the outside of the molecular sieve bed plate. The flow guiding covers are fixedly connected to the inner side wall of the adsorption tower housing through a plurality of support rods around the outside.

[0014] Preferably, a plurality of outer support frames are fixedly connected to the outer wall of the adsorption tower housing, and a connecting base is fixedly connected to the bottom ends of the outer support frames together.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: The adsorption tower for preventing molecular sieve pulverization in this medical oxygen generator stabilizes and compresses the molecular sieve by setting a pressing assembly and using multiple pressing springs to push down multiple pressing plates, thereby avoiding the pulverization phenomenon caused by the molecular sieve moving around. Through the combined setting of the spiral heating tube and the temperature control component, the molecular sieve can be heated and dehumidified to ensure the stability of its mechanical strength and improve the anti-pulverization effect. By setting a pressure equalizing assembly, the gas can be evenly dispersed to reduce its impact on the molecular sieve below, thereby further enhancing the anti-pulverization effect on the molecular sieve. The specific content is as follows: 1. By setting a pressing assembly, if voids occur in the molecular sieve during the operation of the device and it moves around, the multiple pressing plates between the molecular sieves will have room to move. At this time, using multiple pressing springs to forcefully push down, the multiple pressing plates can move downward synchronously to firmly compress on the molecular sieve bedplate and between the molecular sieves, and then flatten the moving voids, thus effectively avoiding the pulverization phenomenon of the molecular sieve caused by the ineffective compression of the molecular sieve bed layer and the movement of the molecular sieve during the operation of the device; 2. Through the combined setting of the spiral heating tube and the temperature control component, when the pressing plate moves downward, the top plate and the lower pressing block will also move downward synchronously. The lower pressing block will squeeze the moving block to slide downward, the rack will move downward synchronously, and drive the temperature control knob to rotate through the meshing action with the protruding teeth, thereby controlling the spiral heating tube to turn on and heat up to dry the damp molecular sieve. At the same time, if the control panel monitors that the humidity inside the adsorption tower housing exceeds the threshold value, it can also directly and intelligently control the spiral heating tube to heat up to achieve the effect of high-temperature moisture absorption, so as to ensure the comprehensiveness and strength of the anti-pulverization of the molecular sieve; 3. By setting a pressure equalizing assembly, when the spiral heating tube heats up and the air pressure inside the hollow column becomes larger, it will squeeze the piston plate to move downward. The threaded rod will rotate spirally along the threaded seat, and the mounting seat and the pressure equalizing fan blades will rotate synchronously. The airflow generated by the rotation of the pressure equalizing fan blades can initially slow down and equalize the incoming gas pressure. When the mounting seat drops to a certain height, the pressure equalizing fan blades can continue to be driven to rotate through the driving mechanism, thereby achieving a subsequent stable pressure equalizing effect and avoiding the pulverization caused by the airflow concentrating on the molecular sieve below; 4. By setting a driving mechanism, when the mounting seat drops to the point where the second bevel gear meshes with the first bevel gear, the motor starts to drive the rotating shaft to rotate, the first bevel gear rotates synchronously, and then drives the meshing second bevel gear to rotate, so that the pressure equalizing fan blades can achieve the effect of blowing and equalizing pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is the sectional structural schematic diagram of the present invention; Figure 3 is the sectional structural schematic diagram of the adsorption tower housing of the present invention; Figure 4 It is a schematic structural diagram of the pressing component of the present invention; Figure 5 For the present invention Figure 2 The enlarged structural diagram at position A in; Figure 6 It is a partial structural diagram of the temperature control component of the present invention; Figure 7 For the present invention Figure 2 The enlarged structural diagram at position B in; Figure 8 It is a schematic structural diagram when the pressure equalizing component of the present invention operates.

[0017] In the figure: 1. Adsorption tower shell; 2. Inlet pipe; 3. Outlet pipe; 4. Molecular sieve bed plate; 5. Hollow column; 6. Pressing plate; 7. Connecting vertical rod; 8. Top plate; 9. Pressing spring; 10. Spiral heating tube; 11. Lower pressing block; 12. Fixed seat; 13. Moving block; 14. Rack; 15. Temperature control knob; 16. Protruding tooth; 17. Limit rotating block; 18. Torsion spring; 19. Threaded seat; 20. Threaded rod; 21. Piston plate; 22. Mounting seat; 23. Pressure equalizing fan blade; 24. Motor; 25. Rotating shaft; 26. First bevel gear; 27. Second bevel gear; 28. Flow guiding cover; 29. Support rod; 30. Sealing bearing; 31. Outer support frame; 32. Connecting base; 33. Control panel. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] Embodiment 1: Please refer to Figures 1 - 8 As shown, in the actual use process of the existing medical oxygen generator, if the molecular sieve bed layer is not firmly pressed, it will cause the molecular sieve to move during the operation of the device. At the same time, if the molecular sieve absorbs moisture, its mechanical strength will decrease. These two situations will also cause the pulverization of the molecular sieve, resulting in an insufficiently comprehensive and powerful anti-pulverization effect on the molecular sieve. To solve this technical problem, the following technical content is disclosed in this embodiment: The adsorption tower housing 1 is provided with an air inlet pipe 2 and an air outlet pipe 3 at its bottom end and top end respectively. Two molecular sieve bed plates 4 are fixedly connected to the inner wall of the adsorption tower housing 1. The space between the two molecular sieve bed plates 4 is used to hold the pressed molecular sieves. Among them, the ends of the air inlet pipe 2 and the air outlet pipe 3 are fixedly connected with flow guide covers 28. The flow guide covers 28 are of an outward-expanded structure and cover the outside of the molecular sieve bed plates 4. And the flow guide covers 28 are fixedly connected to the inner side wall of the adsorption tower housing 1 through a plurality of support rods 29 around the outside to improve the installation stability of the flow guide covers 28. And a plurality of outer support frames 31 are fixedly connected to the outer wall of the adsorption tower housing 1, and the bottom ends of the outer support frames 31 are fixedly connected together with a connection base 32. The adsorption tower housing 1 can be stably installed on the platform through the connection base 32 and bolt connectors.

[0020] A hollow column 5 is fixedly connected between the inner sides of the two molecular sieve bed plates 4. A pressing assembly is arranged on the outside of the hollow column 5. The pressing assembly includes a plurality of pressing plates 6 that slide vertically between the two molecular sieve bed plates 4. And a plurality of connecting vertical rods 7 are fixedly connected between the pressing plates 6. The top ends of the plurality of connecting rods are fixedly connected to the top end of the pressing plate 6 located at the uppermost part. And the top ends of the connecting rods penetrate above the molecular sieve bed plate 4 and are fixedly connected together with a top plate 8. And a pressing spring 9 is fixedly connected between the top plate 8 and the upper molecular sieve bed plate 4 on the outside of each connecting rod.

[0021] During use, if voids occur in the molecular sieves during equipment operation and the molecular sieves move around, there will be space for movement for the multiple layers of pressing plates 6 between the molecular sieves. At this time, the multiple pressing springs 9 are used to push downward forcefully, and the multiple layers of pressing plates 6 can move downward synchronously to firmly press on the molecular sieve bed plates 4 and between the molecular sieves, and then flatten the voids caused by the movement, thus effectively avoiding the phenomenon of molecular sieve pulverization caused by the ineffective pressing of the molecular sieve bed layer and the resulting movement of the molecular sieves during equipment operation. Among them, the pressing plates 6 are integrally hollowed out, and the connecting vertical rods 7 are distributed on the inside and outside of them. In this way, while ensuring the synchronous movement of the whole pressing plates 6, it can effectively achieve uniform pressing of the molecular sieves. And there is a movement gap between the pressing plate 6 located at the lowermost part and the lower molecular sieve bed plate 4 to leave room for the movement of the pressing plates 6.

[0022] Meanwhile, spiral heating tubes 10 are laid on the inner walls of the side walls of both the hollow column 5 and the adsorption tower housing 1, and a temperature control component for turning on and controlling the temperature of the spiral heating tubes 10 is provided at the inner top of the hollow column 5 to heat and dehumidify the molecular sieve, ensuring the stability of its mechanical strength, thereby enhancing the anti-pulverization effect. The temperature control component includes a pressing block 11 fixedly connected to the inner bottom of the top plate 8. The inner top of the inner wall of the hollow column 5 is fixedly connected with a fixed seat 12, and a moving block 13 is slidably limited inside the top end of the fixed seat 12. The bottom end of the moving block 13 is fixedly connected with a rack 14. A temperature control knob 15 is rotatably connected to the inner wall of the fixed seat 12, and the temperature control knob 15 is electrically connected to the spiral heating tubes 10. The outer wall of the temperature control knob 15 is formed with protruding teeth 16 evenly distributed in a circle, and the rack 14 can be engaged with a plurality of protruding teeth 16. A control panel 33 is fixedly installed on the outer side wall of the adsorption tower housing 1, and the control panel 33 is used to monitor the temperature and humidity inside the adsorption tower housing 1 and can intelligently control the temperature of the spiral heating tubes 10.

[0023] By adopting the above technical solution, when the pressing plate 6 moves downward as a whole under the push of the pressing spring 9, the top plate 8 and the pressing block 11 therebetween will also move downward synchronously. During the downward movement of the pressing block 11, it will squeeze the moving block 13, causing the moving block 13 to slide downward along the fixed seat 12. The rack 14 moves downward synchronously and drives the temperature control knob 15 to rotate through the meshing action with the protruding teeth 16, thus controlling the spiral heating tubes 10 to turn on. The greater the rotation amplitude of the temperature control knob 15, the higher the temperature rise of the spiral heating tubes 10 will be. Therefore, while the molecular sieve is being pressed, it is automatically heated and dried. At the same time, if the control panel 33 detects that the humidity inside the adsorption tower housing 1 exceeds the threshold value, it can also directly and intelligently control the spiral heating tubes 10 to increase the temperature when the pressing component is not started to achieve the high-temperature moisture absorption effect, so as to ensure the comprehensiveness and strength of the anti-pulverization of the molecular sieve. When the humidity drops back to the normal range, the control panel 33 automatically controls the spiral heating tubes 10 to turn off. At this time, the position of the temperature control knob 15 is automatically reset to the initial position for rotating to control the start of the spiral heating tubes 10. Moreover, a limiting rotating block 17 is fixedly connected to the end wall of the temperature control knob 15, and the limiting rotating block 17 is rotatably connected to the inner wall of the fixed seat 12. A torsion spring 18 is fixedly connected between the protruding teeth 16 and the inner wall of the fixed seat 12 on the outer side of the limiting rotating block 17. Through the settings of the limiting rotating block 17 and the torsion spring 18, the stability of the temperature control knob 15 when being driven to rotate can be ensured to achieve precise temperature control.

[0024] Embodiment 2: The technical content disclosed in this embodiment is a further improvement based on Embodiment 1 above, such as Figures 1 - 8 shown, in order to further enhance the anti-pulverization effect on the molecular sieve, the following technical content is disclosed in this embodiment: At the inner bottom end of the adsorption tower shell 1, a pressure equalizing component is provided, and the pressure equalizing component can be automatically started with the start of the temperature control component to uniformly disperse the gas entering from the intake pipe 2, thereby reducing its impact on the molecular sieve bed plate 4 and molecular sieves below, and further improving the anti-pulverization effect on the molecular sieves. The pressure equalizing component includes a threaded seat 19 fixedly connected to the bottom of the inner wall of the hollow column 5, and a threaded rod 20 is threadedly connected to the inside of the threaded seat 19. Among them, thread protrusions are formed on the outer wall of only the part of the threaded rod 20 that is threadedly connected to the threaded seat 19. The top end of the threaded rod 20 is fixedly connected to a piston plate 21, and the piston plate 21 is hermetically slidable inside the hollow column 5. The bottom end of the threaded rod 20 is fixedly connected to a mounting seat 22, and evenly distributed pressure equalizing fan blades 23 are fixedly connected to the outer wall of the mounting seat 22. A driving mechanism is provided below the pressure equalizing fan blades 23.

[0025] By adopting the above technical solution, when the spiral heating tube 10 heats up, the gas inside the hollow column 5 will expand and the air pressure will increase. The air pressure will then squeeze the piston plate 21 to move downward, and the threaded rod 20 will rotate spirally along the threaded seat 19. The mounting seat 22 and the pressure equalizing fan blades 23 will rotate synchronously in a spiral manner. The airflow generated by the rotation of the pressure equalizing fan blades 23 can initially reduce the speed and equalize the pressure of the gas entering from the intake pipe 2. When the mounting seat 22 descends to a certain height, the threaded rod 20 disengages from the threaded connection with the threaded seat 19. At this time, the driving mechanism can continue to drive the rotation of the pressure equalizing fan blades 23, thereby achieving a subsequent stable pressure equalizing effect and avoiding the pulverization caused by the airflow concentrating on impacting some of the molecular sieves located below.

[0026] In addition, the driving mechanism includes a motor 24 fixedly installed on the outer side wall of the adsorption tower shell 1. The output shaft on one side of the motor 24 penetrates to the inside of the adsorption tower shell 1 and is fixedly connected to a rotating shaft 25. A sealing bearing 30 is installed at the penetrating and rotating part of the rotating shaft 25 and the side wall of the adsorption tower shell 1 to reduce the friction between the two and also ensure the sealing effect of the adsorption tower shell 1. A first bevel gear 26 is fixedly connected to one side of the rotating shaft 25, and a second bevel gear 27 is fixedly connected to the bottom end of the mounting seat 22. When the threaded rod 20 moves down to the limit, the first bevel gear 26 meshes with the second bevel gear 27, and the control panel 33 can control the operation of the motor 24. By adopting the above technical solution, when the mounting seat 22 descends to the point where the second bevel gear 27 meshes with the first bevel gear 26, the motor 24 starts to drive the rotating shaft 25 to rotate, and the first bevel gear 26 rotates synchronously, and then drives the engaged second bevel gear 27 to rotate. In this way, the pressure equalizing fan blades 23 can achieve the effect of blowing and equalizing pressure.

[0027] The content not described in detail in this specification belongs to the well-known prior art of those skilled in the art.

[0028] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An adsorption tower for preventing molecular sieve pulverization in a medical oxygen generator, comprising an adsorption tower shell (1), wherein an air inlet pipe (2) and an air outlet pipe (3) are respectively arranged at the bottom and top of the adsorption tower shell (1), and two molecular sieve bed plates (4) are connected to the inner wall of the adsorption tower shell (1); It is characterized in that The inner sides of the two molecular sieve bed plates (4) are connected to a hollow column (5), and the outer sides of the hollow column (5) are provided with a clamping assembly, wherein the clamping assembly comprises a plurality of clamping plates (6) sliding between the two molecular sieve bed plates (4), and a plurality of connecting vertical rods (7) are connected between the clamping plates (6), and the top end of the clamping plate (6) located at the top is connected to a top plate (8) via a connecting rod, and a clamping spring (9) is connected between the top plate (8) and the molecular sieve bed plate (4) above; The inner walls of the side walls of the hollow column (5) and the adsorption tower shell (1) are both provided with spiral heating tubes (10), and the top end of the hollow column (5) is provided with a temperature control component for turning on and controlling the temperature of the spiral heating tubes (10) so as to heat and dehumidify the molecular sieve; A pressure equalizing assembly is provided at the bottom of the inner part of the adsorption tower shell (1) to evenly disperse the gas entering from the air inlet pipe (2) to reduce the impact of the gas on the molecular sieve bed plate (4) and the molecular sieve below.

2. The adsorption tower for preventing molecular sieve pulverization in a medical oxygen concentrator according to claim 1, characterized in that: The clamping plate (6) is hollowed out as a whole, and the connecting vertical rods (7) are distributed on the inner and outer sides thereof, and a movable gap exists between the clamping plate (6) located at the bottom and the molecular sieve bed plate (4) below.

3. The adsorption tower for preventing molecular sieve pulverization in a medical oxygen concentrator according to claim 1, characterized in that: The temperature control component comprises a lower pressing block (11) fixedly connected to the bottom inner side of the top plate (8); a fixing seat (12) is fixedly connected to the top of the inner wall of the hollow column (5); a moving block (13) is slidingly limited on the inner side of the top end of the fixing seat (12); a rack (14) is fixedly connected to the bottom end of the moving block (13); a temperature control knob (15) is rotatably connected to the inner wall of the fixing seat (12); the temperature control knob (15) is electrically connected to the spiral heating tube (10); the outer wall of the temperature control knob (15) is formed with protruding teeth (16) evenly distributed around the circumference; and the rack (14) can mesh with a plurality of protruding teeth (16); a control panel (33) is fixedly installed on the outer wall of the adsorption tower shell (1); and the control panel (33) is used to monitor the temperature and humidity conditions inside the adsorption tower shell (1) and can intelligently control the temperature of the spiral heating tube (10).

4. The adsorption tower for preventing molecular sieve from pulverizing in a medical oxygen concentrator according to claim 3, characterized in that: The end wall of the temperature control knob (15) is fixedly connected to a limit rotation block (17), and the limit rotation block (17) is rotatably connected to the inner wall of the fixed seat (12), and a torsion spring (18) is fixedly connected to the outer side of the limit rotation block (17) between the protruding teeth (16) and the inner wall of the fixed seat (12).

5. The adsorption tower for preventing molecular sieve pulverization in a medical oxygen concentrator according to claim 3, characterized in that: The pressure-equalizing assembly comprises a threaded seat (19) fixedly connected to the bottom of the inner wall of the hollow column (5), and the inner side of the threaded seat (19) is threadedly connected to a threaded rod (20), wherein only a portion of the outer wall of the threaded rod (20) that is threadedly connected to the threaded seat (19) is formed with a threaded protrusion, the top end of the threaded rod (20) is fixedly connected to a piston plate (21), and the piston plate (21) slides sealingly on the inner side of the hollow column (5), the bottom end of the threaded rod (20) is fixedly connected to a mounting seat (22), and the outer wall of the mounting seat (22) is fixedly connected to pressure-equalizing blades (23) evenly distributed around the circumference, and a driving mechanism is provided below the pressure-equalizing blades (23).

6. The adsorption tower for preventing molecular sieve from pulverizing in a medical oxygen concentrator according to claim 5, characterized in that: The driving mechanism comprises a motor (24) fixedly mounted on the outer wall of the adsorption tower housing (1), and an output shaft on one side of the motor (24) penetrates the inner side of the adsorption tower housing (1) and is fixedly connected to a rotating shaft (25), one side of the rotating shaft (25) is fixedly connected to a first bevel gear (26), and the bottom end of the mounting seat (22) is fixedly connected to a second bevel gear (27), and when the threaded rod (20) moves downward to a limit, the first bevel gear (26) meshes with the second bevel gear (27), and the control panel (33) can control the operation of the motor (24).

7. The adsorption tower for preventing molecular sieve pulverization in a medical oxygen concentrator according to claim 6, characterized in that: A sealed bearing (30) is installed at the rotation point where the rotating shaft (25) and the side wall of the adsorption tower shell (1) penetrate and rotate, thereby reducing friction between the two.

8. The adsorption tower for preventing molecular sieve from pulverizing in a medical oxygen concentrator according to claim 7, characterized in that: The ends of the air inlet pipe (2) and the air outlet pipe (3) are both fixedly connected with a flow guide cover (28), the flow guide cover (28) is an outwardly expanded structure and covers the outside of the molecular sieve bed plate (4), and the flow guide cover (28) is fixedly connected to the inner side wall of the adsorption tower shell (1) through a plurality of support rods (29) around the outside.

9. The adsorption tower for preventing molecular sieve pulverization in a medical oxygen concentrator according to claim 1, characterized in that: A plurality of external support frames (31) are fixedly connected to the outer wall of the adsorption tower shell (1), and the bottom ends of the external support frames (31) are commonly fixedly connected to a connection base (32).

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