An adsorption tower applied to a plateau oxygen production system

Abstract

The utility model belongs to the technical field of adsorption tower, provide an adsorption tower for the oxygen system of plateau application, including tower body, tower cover, be equipped with lower screen cloth pressure plate combination, middle layer screen cloth, upper screen cloth pressure plate combination in the tower body, lower screen cloth pressure plate combination and middle layer screen cloth between fill in drying agent, middle layer screen cloth and upper screen cloth pressure plate combination between fill in molecular sieve, upper screen cloth pressure plate combination and tower cover between fill in counterweight ball, lower screen cloth pressure plate combination from below to above include mesh plate, lower screen cloth layer, lower pressure plate in proper order, upper screen cloth pressure plate combination from below to above include upper fixed ring, upper pressure plate, upper screen cloth layer, molecular sieve pressure plate in proper order. This adsorption tower can adsorb the moisture in the air by setting drying agent inside, avoid molecular sieve adsorption a large number of water molecules, can prevent equipment corrosion aging simultaneously. Through setting upper screen cloth layer, middle layer screen cloth, lower screen cloth layer can play the effect of multiple filtration. Through setting counterweight ball, can promote the stability of drying agent and molecular sieve.

Description

Technical Field

[0001] This utility model belongs to the field of adsorption tower technology, specifically relating to an adsorption tower used in high-altitude oxygen production systems. Background Technology

[0002] High-altitude oxygen production systems typically employ pressure swing adsorption (PSA) technology. This technology utilizes the selective adsorption characteristics of molecular sieves for different gaseous components in the air. Specifically, when pressurized, the molecular sieve preferentially adsorbs impurities such as nitrogen and carbon dioxide, while its adsorption capacity for oxygen is relatively weak, resulting in oxygen-enriched gas being output from the adsorption tower outlet. When the pressure decreases, the adsorbed impurities, such as nitrogen, desorb from the molecular sieve, regenerating it for repeated oxygen production.

[0003] However, when the air is humid or contains many impurities, the equipment is prone to corrosion and aging, increasing the maintenance costs and operational risks of the adsorption tower, and also leading to a decrease in the purity of the output oxygen. Secondly, molecular sieves may adsorb a large number of water molecules, which are difficult to remove during subsequent desorption. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides an adsorption tower for use in high-altitude oxygen production systems, which can solve the aforementioned problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an adsorption tower for use in a high-altitude oxygen production system, comprising a tower body and a tower cover installed at the opening at the top of the tower body; An air inlet pipe is provided at the bottom of the tower body; The tower body is provided with a lower mesh pressing plate assembly, a middle mesh, and an upper mesh pressing plate assembly from bottom to top. A desiccant is filled between the lower mesh pressing plate assembly and the middle mesh, a molecular sieve is filled between the middle mesh and the upper mesh pressing plate assembly, and a counterweight ball is filled between the upper mesh pressing plate assembly and the tower cover. The lower mesh pressing plate assembly includes, from bottom to top, a perforated plate, a lower mesh layer, and a lower pressing plate. The upper mesh pressing plate assembly includes, from bottom to top, an upper fixing ring, an upper pressing plate, an upper mesh layer, and a molecular sieve pressing plate. The tower cover is equipped with an air outlet pipe and an inspection port.

[0006] Preferably, the perforated plate is fixed to the inner wall of the tower body, and the perforated plate is provided with a lower bolt. The lower mesh layer and the lower pressure plate are both provided with through holes for the lower bolt to pass through. The lower bolt is screwed with a lower nut, and the lower nut is used to press the lower pressure plate.

[0007] Preferably, the upper fixing ring is an annular structure, the upper fixing ring is fixed to the inner wall of the tower body, the upper fixing ring is provided with an upper bolt, the upper pressure plate, the upper mesh layer, and the molecular sieve pressure plate are all provided with through holes for the upper bolt to pass through, the upper bolt is screwed with an upper nut, and the upper nut is used to press the molecular sieve pressure plate.

[0008] Preferably, the air intake pipe is connected to an air extraction pipe.

[0009] Preferably, a support plate is provided between the air inlet pipe and the tower body.

[0010] Preferably, the tower cover is provided with a collector, which is a tubular structure. The top of the collector is connected to the gas outlet pipe, the bottom of the collector is closed, and the side wall of the collector is provided with a gas outlet hole.

[0011] Preferably, a mesh ring is fitted onto the side wall of the collector by means of a clamp.

[0012] Preferably, the adsorption tower further includes a support for supporting the tower body.

[0013] Preferably, the support includes four legs, each leg including a base plate, a stiffening plate, and a pad. The stiffening plate is fixed to the base plate, the pad is fixed to the top of the stiffening plate, and the pad is fixed to the tower body.

[0014] Preferably, the bracket further includes a connecting plate, which is fixed to two adjacent legs.

[0015] Compared with the prior art, the present invention has the following beneficial effects: This invention provides an adsorption tower for use in high-altitude oxygen production systems. By placing a desiccant at the bottom of the tower, it can adsorb moisture in the air, preventing the molecular sieve from adsorbing large amounts of water molecules and simultaneously preventing equipment corrosion and aging. The use of upper, middle, and lower mesh layers provides a multi-layered filtration effect, effectively improving the purity of the output oxygen. The addition of counterweights enhances the stability of the desiccant and molecular sieve, thereby extending the equipment's service life. Attached Figure Description

[0016] Figure 1 A three-dimensional structural diagram of an adsorption tower applied to a high-altitude oxygen production system, provided for an embodiment of this utility model; Figure 2 A front view schematic diagram of an adsorption tower applied to a high-altitude oxygen production system, provided as an embodiment of this utility model; Figure 3A front view schematic diagram of a molecular sieve and related parts of an adsorption tower used in a high-altitude oxygen production system, provided for an embodiment of this utility model; Figure 4 A front view structural schematic diagram of the lower mesh pressure plate assembly and related parts of an adsorption tower used in a plateau oxygen production system, provided for an embodiment of this utility model; Figure 5 A front view structural schematic diagram of an adsorption tower upper mesh pressure plate assembly and related parts used in a plateau oxygen production system, provided for an embodiment of this utility model; Figure 6 A front view structural diagram of the tower body and related parts of an adsorption tower applied to a high-altitude oxygen production system, provided for an embodiment of this utility model; Figure 7 A top view of the upper fixing ring of an adsorption tower used in a high-altitude oxygen production system, provided as an embodiment of this utility model; Figure 8 A top view of the mesh plate of an adsorption tower used in a high-altitude oxygen production system, provided as an embodiment of this utility model; Figure 9 A front view structural diagram of the lower bolt and related parts of an adsorption tower used in a high-altitude oxygen production system, provided for an embodiment of this utility model; Figure 10 A top view of the lower pressure plate of an adsorption tower used in a high-altitude oxygen production system, provided as an embodiment of this utility model; Figure 11 A front view structural schematic diagram of the tower cover and related parts of an adsorption tower used in a high-altitude oxygen production system, provided for an embodiment of this utility model; Figure 12 This is a three-dimensional structural diagram of an adsorption tower support and related parts for use in a high-altitude oxygen production system, provided as an embodiment of the present invention.

[0017] The attached diagram lists the components represented by each number as follows: 1. Tower body; 2. Tower cover; 3. Bracket; 301. Base plate; 302. Stiffening plate; 303. Pad; 304. Connecting plate; 4. Lower mesh pressing plate assembly; 401. Mesh plate; 402. Lower mesh layer; 403. Lower pressing plate; 404. Lower bolt; 405. Lower nut; 5. Middle layer mesh; 6. Upper mesh pressing plate assembly; 601. Upper fixing ring; 602. Upper pressing plate; 603. Upper mesh layer; 604. Molecular sieve pressing plate; 605. Upper bolt; 606. Upper nut; 7. Desiccant; 8. Molecular sieves; 9. Counterweight ball; 10. Air intake pipe; 11. Air outlet pipe; 12. Inspection port; 13. Evacuation pipe; 14. Collector; 15. Vent; 16. Support plate. Detailed Implementation

[0018] To make the technical solutions and advantages of the embodiments of this application clearer, the exemplary embodiments of this application will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not an exhaustive list of all embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0019] This embodiment provides an adsorption tower for use in a high-altitude oxygen production system, including a tower body 1 and a tower cover 2 covering the opening at the top of the tower body 1.

[0020] An air inlet pipe 10 is provided at the bottom of the tower body 1; For example, see Figure 1-2 The tower body 1 has an opening at the top, and the tower cover 2 is placed over the opening at the top of the tower body 1. The bottom of the tower body 1 has a funnel-shaped structure. The air inlet pipe 10 is connected to the bottom of the tower body 1, allowing air to enter the tower body 1 through the air inlet pipe 10.

[0021] For example, an extraction pipe 13 is connected to the air inlet pipe 10, and the extraction pipe 13 is connected to a negative pressure device. When desorption is required, a vacuum can be drawn into the tower body 1 through the extraction pipe 13, thereby reducing the pressure inside the tower body 1.

[0022] For example, a support plate 16 is provided between the air inlet pipe 10 and the tower body 1. The two ends of the support plate 16 are fixedly connected to the air inlet pipe 10 and the tower body 1, respectively. The support plate 16 can improve the stability of the air inlet pipe 10.

[0023] The tower body 1 is provided with a lower mesh pressing plate assembly 4, a middle mesh 5, and an upper mesh pressing plate assembly 6 from bottom to top. A desiccant 7 is filled between the lower mesh pressing plate assembly 4 and the middle mesh 5. A molecular sieve 8 is filled between the middle mesh 5 and the upper mesh pressing plate assembly 6. A counterweight ball 9 is filled between the upper mesh pressing plate assembly 6 and the tower cover 2. The lower mesh pressing plate assembly 4 includes a mesh plate 401, a lower mesh layer 402, and a lower pressing plate 403 from bottom to top. The upper mesh pressing plate assembly 6 includes an upper fixing ring 601, an upper pressing plate 602, an upper mesh layer 603, and a molecular sieve pressing plate 604 from bottom to top. For example, see Figure 2-3The lower mesh pressure plate assembly 4 is fixedly installed at the bottom of the tower body 1. The lower mesh layer 402 is made of stainless steel mesh with a mesh count of 24. The lower mesh layer 402 serves a filtering function. The perforated plate 401 and the lower pressure plate 403 are used to clamp and fix the lower mesh layer 402. The perforated plate 401 also provides support.

[0024] For example, desiccant 7 is laid flat on the lower mesh pressing plate assembly 4. Desiccant 7 can be aluminum oxide, and it can absorb water molecules in the air, thus drying the air.

[0025] For example, the middle layer of mesh 5 is laid flat on the desiccant 7. The middle layer of mesh 5 is made of stainless steel and has a mesh count of 24. The middle layer of mesh 5 can function as a filter.

[0026] For example, molecular sieve 8 is laid flat on the middle layer of mesh 5. Molecular sieve 8 can be lithium-based molecular sieve, etc., which has the characteristics of high selectivity and high adsorption capacity, and can efficiently adsorb impurity gases such as nitrogen, thereby achieving oxygen enrichment.

[0027] For example, the upper mesh pressing plate assembly 6 is fixedly installed in the upper region of the tower body 1, and the upper mesh pressing plate assembly 6 covers the molecular sieve 8. The upper fixing ring 601 provides support. The upper mesh layer 603 is made of stainless steel mesh with a mesh count of 24. The upper mesh layer 603 serves a filtering function. The upper pressing plate 602 and the molecular sieve pressing plate 604 are used to clamp and fix the upper mesh layer 603, and also to press down the molecular sieve 8.

[0028] For example, the counterweight balls 9 are laid flat on the upper mesh pressing plate assembly 6. The counterweight balls 9 can be steel balls with a diameter of 15mm-22mm. The counterweight balls 9 can act as a counterweight to prevent the molecular sieve bed 8 from loosening, surging, or even fluidizing under the impact of periodic airflow.

[0029] The tower cover 2 is equipped with an air outlet pipe 11 and an inspection port 12.

[0030] For example, see Figure 1 , Figure 11 The tower cover 2 is equipped with a collector 14. The collector 14 has a tubular structure, with its top end connected to the gas outlet pipe 11 and its bottom end closed. Multiple gas outlet holes 15 are evenly distributed on the side wall of the collector 14. The gas inside the tower cover 2 can enter the collector 14 through the gas outlet holes 15 and finally enter the gas outlet pipe 11 for discharge.

[0031] For example, a mesh ring is fitted onto the side wall of collector 14 via clamps. The mesh ring is made of stainless steel mesh with a mesh count of 24. The mesh ring serves as a filter.

[0032] For example, a manhole access port 12 is provided near the top of the tower cover 2, allowing personnel to easily enter for maintenance. It is worth noting that a counterweight ball 9 is filled between the upper mesh pressure plate assembly 6 and the tower cover 2, and the upper counterweight ball 9 is higher than the connection point between the tower cover 2 and the tower body 1. If the tower cover 2 is opened directly during maintenance, the counterweight balls 9 above the connection point will scatter to the ground. To avoid this, the counterweight balls 9 above the connection point can be removed beforehand by opening the access port 12, allowing the tower cover 2 to be opened normally, making operation more convenient.

[0033] Based on the above structure, in the adsorption tower provided in this embodiment, air enters the tower body 1 from the inlet pipe 10, passes upward in sequence through the lower mesh pressing plate assembly 4, desiccant 7, middle mesh 5, molecular sieve 8, upper mesh pressing plate assembly 6, and counterweight ball 9, and finally exits from the outlet pipe 11, thus completing the enrichment of oxygen.

[0034] The desiccant 7, placed at the bottom of the tower, adsorbs moisture from the air, preventing the molecular sieve 8 from absorbing large amounts of water molecules and also preventing equipment corrosion and aging. The upper mesh layer 603, middle mesh layer 5, and lower mesh layer 402 provide multiple filtration layers, effectively improving the purity of the output oxygen. The addition of counterweight balls 9 enhances the stability of the desiccant 7 and molecular sieve 8, thereby extending the equipment's service life.

[0035] Based on the above technical solution, in the technical solution provided in this embodiment, the perforated plate 401 is fixed on the inner wall of the tower body 1, the perforated plate 401 is provided with a lower bolt 404, the lower mesh layer 402 and the lower pressure plate 403 are both provided with through holes for the lower bolt 404 to pass through, the lower bolt 404 is screwed with a lower nut 405, and the lower nut 405 is used to press the lower pressure plate 403.

[0036] For example, see Figure 2-4 The perforated plate 401 is located at the bottom inside the tower body 1, and is coaxially welded and fixed to the inner wall of the tower body 1. (See also...) Figure 8 The perforated plate 401 has multiple air inlets evenly arranged on it. The perforated plate 401 also has multiple lower bolts 404. (See also...) Figure 9 The lower bolt 404 penetrates through the perforated plate 401, and the bottom end of the lower bolt 404 is welded to the perforated plate 401. This ensures the flatness of the top end of the perforated plate 401.

[0037] For example, see Figure 4 The lower mesh layer 402 is provided with through holes for the lower bolt 404 to pass through, so that the lower mesh layer 402 can be laid flat on the perforated plate 401. The lower mesh layer 402 may include two layers of mesh, the lower layer being a coarse mesh and the upper layer being a fine mesh.

[0038] For example, see Figure 10The lower pressure plate 403 is provided with a through hole for the lower bolt 404 to pass through, so that the lower pressure plate 403 can be laid flat on the lower mesh layer 402.

[0039] For example, the lower pressure plate 403 can consist of an outer ring and an inner ring. The outer ring is composed of four arc-shaped rods joined together, with gaps between adjacent arc-shaped rods to prevent them from being squeezed and deformed. The arc-shaped rods are fixedly connected to the inner ring by connecting rods. In this way, the lower pressure plate 403 can exert a uniform and stable pressing effect on the lower yarn mesh layer 402, ensuring the stability of the lower yarn mesh layer 402.

[0040] In the technical solution provided in this embodiment, the upper fixing ring 601 is an annular structure. The upper fixing ring 601 is fixed on the inner wall of the tower body 1. The upper fixing ring 601 is provided with an upper bolt 605. The upper pressure plate 602, the upper mesh layer 603, and the molecular sieve pressure plate 604 are all provided with through holes for the upper bolt 605 to pass through. The upper bolt 605 is screwed with an upper nut 606, which is used to press the molecular sieve pressure plate 604.

[0041] For example, see Figure 5-7 The upper fixing ring 601 is coaxially welded and fixed to the inner wall of the tower body 1. Multiple upper bolts 605 are evenly spaced along the extension direction of the upper fixing ring 601. The upper bolts 605 pass through the upper fixing ring 601, and the bottom end of the upper bolt 605 is welded to the upper fixing ring 601, which can ensure the flatness of the top end of the upper fixing ring 601.

[0042] For example, see Figure 5 The upper pressure plate 602 is provided with a through hole for the upper bolt 605 to pass through, so that the upper pressure plate 602 can be laid flat on the upper fixing ring 601. The structure of the upper pressure plate 602 can be the same as that of the lower pressure plate 403, and will not be described in detail here.

[0043] For example, the upper mesh layer 603 is provided with through holes for the upper bolt 605 to pass through, so that the upper mesh layer 603 can be laid flat on the upper pressure plate 602.

[0044] For example, the molecular sieve plate 604 has through holes for the upper bolts 605 to pass through, so that the molecular sieve plate 604 can be laid flat on the upper mesh layer 603. The structure of the molecular sieve plate 604 can be the same as that of the mesh plate 401, which will not be described in detail here.

[0045] In the technical solution provided in this embodiment, the adsorption tower also includes a support 3 for supporting the tower body 1.

[0046] For example, see Figure 1 , Figure 12 The support 3 includes four legs, each leg including a foot plate 301, two stiffening plates 302, and a pad 303.

[0047] For example, the base plate 301 is fixed to the ground by bolts.

[0048] For example, the stiffening plate 302 is set vertically and is welded and fixed to the base plate 301.

[0049] For example, the pad 303 is fixed to the top of both stiffening plates 302. The pad 303 is adapted to the bottom of the tower body 1, and the pad 303 is attached to the bottom of the tower body 1 and welded for fixation.

[0050] For example, the support frame 3 also includes a connecting plate 304. The connecting plate 304 is welded and fixed to the base plate 301, stiffening plate 302, and pad 303 of one support leg. Simultaneously, the connecting plate 304 is also welded and fixed to the base plate 301, stiffening plate 302, and pad 303 of the other support leg. This effectively improves the stability of the support leg, thereby enhancing the stability of the support frame 3.

[0051] The adsorption tower provided in this embodiment may include the following steps in assembling the molecular sieve: 1. Once the entire system is assembled, the molecular sieve can be loaded into the adsorption tower. The molecular sieve loading is carried out according to the following steps.

[0052] 2. First, disassemble the tower top cover and auxiliary pipes. Mark the pressure rings at the bottom and top of the tower, then remove the pressure rings. After opening the tower cover, secure two rings of fine mesh to the tower cover collector with clamps. Remove debris, slag, and rust from inside the tower. After thorough cleaning, proceed with the adsorption tower filling process.

[0053] 3. Cut the mesh into 1m x 1m blocks, lay them vertically downwards on the perforated plate at the bottom of the adsorption tower, using two layers: a coarse mesh on the bottom and a fine mesh on the top. When laying, ensure the folds of the mesh face downwards and that the cross-sections of the mesh are staggered to ensure a seamless mesh coverage. Then, fix the mesh to the perforated plate at the bottom of the tower using the pressure plate.

[0054] 4. Cut the fine mesh into 0.5m x 3.5m strips, then roll them into two tubes. Overlap the tubes with the seams staggered by 180 degrees. Secure the lower edge to the upper fixing ring of the tower using the upper pressure plate. After fixing, the mesh should extend at least 0.4m above the flange surface of the adsorption tower.

[0055] 5. Inspect the molecular sieve and activated alumina, and confirm their type, dosage, and adsorption tower volume. Also, ensure the bolts on the bottom pressure plate of the tower are tightened. Proceed to the next step after confirmation.

[0056] 6. Fill with activated alumina. Hoist the alumina to the top of the tower and pour it into the tower, taking care not to press down on the top mesh (cylindrical mesh). The filling amount of activated alumina is 7 bags (175Kg). During filling, the tower body needs to be tapped to compact the alumina, and the alumina should be smoothed with a wooden board or iron plate. Finally, lay a 1m x 1m fine mesh on top of the alumina.

[0057] 7. Fill with molecular sieve. Lift the molecular sieve buckets to the top of the tower, cut open the bag opening, and pour the molecular sieve into the tower through a chute or funnel. When pouring, prevent the molecular sieve from falling outside the upper mesh and damaging it. During filling, tap the adsorption tower to compact the molecular sieve and smooth it out. Fill 4 buckets (500 kg each). Proceed to the next step after filling.

[0058] 8. Hoist the upper pressure plate, mesh, and molecular sieve pressure plate assembly to the top of the tower. Place it flat on top of the molecular sieve, ensuring the pressure plate is level and does not press down on the upper mesh. After the pressure plate is in place, fold the mesh tube from step 4 towards the center of the tower to cover the edge of the pressure plate (or cut it off directly), and secure it to the pre-installed threaded rod on the pressure plate using nuts. After tightening, proceed to the next step.

[0059] 9. Hoist the prepared adsorption tower top cover to the top of the tower for installation. When connecting the flange faces, the bolts must be installed diagonally in turn. After installation, tighten them diagonally in turn with a torque wrench or pneumatic wrench. After completion, proceed to the next step.

[0060] 10. Seal the DN65 flange at the top of the adsorption tower with a blind flange, open the DN200 manhole cover, hoist the weighted steel balls, and pour them into the adsorption tower through the manhole using tools such as a funnel. During the process, use a long push rod to evenly deliver the steel balls into all directions inside the cover until all 600KG steel balls are loaded into the adsorption tower.

[0061] 11. Close the manhole cover, open the blind flange, and install the auxiliary piping. Installation complete.

[0062] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", 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.

[0063] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0064] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0065] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. An adsorption tower for use in high-altitude oxygen production systems, characterized in that, Includes a tower body (1) and a tower cover (2) installed at the top opening of the tower body (1); The bottom end of the tower body (1) is provided with an air inlet pipe (10). The tower body (1) is provided with a lower mesh pressing plate assembly (4), a middle mesh (5), and an upper mesh pressing plate assembly (6) from bottom to top. A desiccant (7) is filled between the lower mesh pressing plate assembly (4) and the middle mesh (5). A molecular sieve (8) is filled between the middle mesh (5) and the upper mesh pressing plate assembly (6). A counterweight ball (9) is filled between the upper mesh pressing plate assembly (6) and the tower cover (2). The lower mesh pressing plate assembly (4) includes a mesh plate (401), a lower mesh layer (402), and a lower pressing plate (403) from bottom to top. The upper mesh pressing plate assembly (6) includes an upper fixing ring (601), an upper pressing plate (602), an upper mesh layer (603), and a molecular sieve pressing plate (604) from bottom to top. The tower cover (2) is provided with an air outlet (11) and an inspection port (12).

2. The adsorption tower for use in a high-altitude oxygen production system according to claim 1, characterized in that, The perforated plate (401) is fixed on the inner wall of the tower body (1). The perforated plate (401) is provided with a lower bolt (404). The lower mesh layer (402) and the lower pressure plate (403) are both provided with through holes for the lower bolt (404) to pass through. The lower bolt (404) is screwed with a lower nut (405). The lower nut (405) is used to press the lower pressure plate (403).

3. An adsorption tower for use in a high-altitude oxygen production system according to claim 1, characterized in that, The upper fixing ring (601) is an annular structure. The upper fixing ring (601) is fixed on the inner wall of the tower body (1). The upper fixing ring (601) is provided with an upper bolt (605). The upper pressure plate (602), the upper mesh layer (603), and the molecular sieve pressure plate (604) are all provided with through holes for the upper bolt (605) to pass through. The upper bolt (605) is screwed with an upper nut (606). The upper nut (606) is used to press the molecular sieve pressure plate (604).

4. An adsorption tower for use in a high-altitude oxygen production system according to claim 1, characterized in that, The intake pipe (10) is connected to the exhaust pipe (13).

5. An adsorption tower for use in a high-altitude oxygen production system according to claim 1, characterized in that, A support plate (16) is provided between the air inlet pipe (10) and the tower body (1).

6. An adsorption tower for use in a high-altitude oxygen production system according to claim 1, characterized in that, The tower cover (2) is provided with a collector (14), which is a tubular structure. The top of the collector (14) is connected to the air outlet pipe (11), the bottom of the collector (14) is closed, and the side wall of the collector (14) is provided with an air outlet hole (15).

7. An adsorption tower for use in a high-altitude oxygen production system according to claim 6, characterized in that, A mesh ring is fitted on the side wall of the collector (14) by means of a clamp.

8. An adsorption tower for use in a high-altitude oxygen production system according to claim 1, characterized in that, The adsorption tower also includes a support (3) for supporting the tower body (1).

9. An adsorption tower for use in a high-altitude oxygen production system according to claim 8, characterized in that, The support (3) includes four legs, each leg including a foot plate (301), a stiffening plate (302), and a pad (303). The stiffening plate (302) is fixed on the base plate (301), the pad (303) is fixed on the top of the stiffening plate (302), and the pad (303) is fixed to the tower body (1).

10. An adsorption tower for use in a high-altitude oxygen production system according to claim 9, characterized in that, The bracket (3) also includes a connecting plate (304), which is fixed to the two adjacent legs.

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