Molecular sieve water removal structure
By designing a molecular sieve dehydration structure in an oxygen generator, and utilizing heated and dried air dehydration and rotary switching technology, the problem of moisture accumulation inside the molecular sieve was solved, enabling the zeolite molecular sieve to be reused multiple times and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING YINUOJI MEDICAL TECH CO LTD
- Filing Date
- 2025-07-23
- Publication Date
- 2026-06-26
AI Technical Summary
Existing oxygen generators use molecular sieves that adsorb water molecules along with nitrogen molecules, causing moisture to accumulate inside the sieve, which affects nitrogen-oxygen separation efficiency. Furthermore, the molecular sieves need to be replaced frequently, increasing operating costs.
A molecular sieve dewatering structure is designed. The zeolite molecular sieve is dried by supplying heated and dry air into the outer shell, water vapor is discharged by an exhaust valve, and the molecular sieve can be switched between oxygen production and dewatering by rotating a turntable, thereby improving the practicality and reusability of the molecular sieve.
It effectively removes moisture from the inside of zeolite molecular sieves, extends the service life of molecular sieves, reduces replacement frequency and operating costs, and improves the nitrogen and oxygen separation efficiency and practicality of molecular sieves.
Smart Images
Figure CN224405152U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of oxygen generator technology, and specifically relates to a molecular sieve water removal structure. Background Technology
[0002] Existing oxygen generators typically achieve effective separation of nitrogen and oxygen by selectively adsorbing nitrogen molecules through molecular sieves and allowing oxygen molecules to pass through.
[0003] Currently, Chinese utility model patent CN209430784U discloses an electrolyte molecular sieve dewatering device. However, because the molecular sieve selectively adsorbs nitrogen molecules, it also adsorbs water molecules. Over time, a large amount of moisture accumulates inside the molecular sieve, affecting its nitrogen-oxygen separation efficiency. Therefore, the zeolite in the molecular sieve needs to be replaced periodically. However, existing molecular sieves lack corresponding dewatering structures, resulting in frequent zeolite replacements due to increased moisture inside the molecular sieve. This is not only troublesome but also increases operating costs because the zeolite can only be reused a limited number of times. Utility Model Content
[0004] The purpose of this invention is to provide a molecular sieve dewatering structure, which has the advantages of effectively removing water from the molecular sieve, allowing the zeolite molecular sieve to be reused multiple times, and enabling the molecular sieve to switch between dewatering during normal oxygen production.
[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a molecular sieve dewatering structure, including an outer shell, a side cover welded to one side of the outer shell, a suction fan bolted to the side of the side cover away from the outer shell, an air supply pipe fixedly connected to the output end of the suction fan, a drying heating wire fixedly sleeved on the surface of the air supply pipe, the output end of the suction fan connected to the outside, filter screens bolted to both sides inside the outer shell, zeolite molecular sieves filled between the two filter screens, and an exhaust valve bolted to the top of the outer shell near the side cover.
[0006] By employing the above technical solution, heated and dried air is supplied to the interior of the outer shell. As this air passes through the zeolite molecular sieve, it dries the moisture inside the sieve, and the moisture-containing steam is discharged through an exhaust valve. This effectively removes water from the zeolite molecular sieve, allowing it to be reused multiple times and reducing costs. Rotating the turntable connects the passageway to the gas supply pipe and exhaust valve, or the oxygen production outlet valve and oxygen production inlet valve. This allows the molecular sieve to switch between water removal during normal oxygen production operations, improving its practicality.
[0007] The present invention is further configured such that: a circular block is provided on the side of the two filters that are far apart from each other, which is rotatably connected to the outer shell; the interior of the two circular blocks is respectively provided with a through groove that communicates with the air supply pipe and the exhaust valve; a connecting rod that is rotatably connected to the filters is bolted between the two through grooves; and a turntable that is bolted to the circular block is rotatably connected to the top of the outer shell.
[0008] By adopting the above technical solution, the molecular sieve can be switched between water removal and normal oxygen production, thereby improving the practicality of the molecular sieve.
[0009] The present invention is further configured such that: the top and bottom of the outer shell away from the side cover are respectively bolted with an oxygen-generating outlet valve and an oxygen-generating inlet valve connected to the same through groove.
[0010] Using the above technical solution, when the through groove inside the rotating circular block is connected to the oxygen supply valve and the oxygen inlet valve respectively, the zeolite molecular sieve adsorbs nitrogen molecules entering the air, while allowing oxygen molecules to pass through, thereby achieving the separation of nitrogen and oxygen.
[0011] The present invention is further configured such that: a gas collection hood that works in conjunction with a through groove is bolted to one side of each of the two circular blocks that are close to each other.
[0012] By adopting the above technical solution, air can be concentrated and enter the interior of the channel, thereby improving air transport efficiency.
[0013] The present invention is further configured such that: a limiting bolt that is threaded through one side of the inside of the turntable and engages with the outer shell is connected, and a guide pointer is bolted to the top of the turntable on the side away from the limiting bolt.
[0014] Using the above technical solution, the turntable is locked by tightening the limiting bolt, thereby limiting the circular block. At the same time, the guide pointer and the through groove are parallel to each other. By passing through the guide pointer, the through groove can be adjusted so that the through groove is connected to the gas supply pipe and exhaust valve or the oxygen production outlet valve and oxygen production inlet valve respectively.
[0015] The present invention is further configured such that: the surfaces of the two circular blocks are each fixedly fitted with a sealing ring that is slidably connected to the outer shell.
[0016] By adopting the above technical solution, the sealing between the circular block and the outer shell is improved, preventing gas from leaking out from the inside of the channel.
[0017] The present invention is further configured such that a support block welded to the outer shell is slidably connected to the surface of the circular block.
[0018] By adopting the above technical solution, the rotation of the circular block is supported and limited from top to bottom, thereby improving rotational stability.
[0019] In summary, this utility model has the following beneficial effects:
[0020] 1. By supplying heated and dried air into the interior of the outer shell, the heated and dried air passes through the zeolite molecular sieve, drying the moisture inside the zeolite molecular sieve, and then expelling the moisture-containing steam through the exhaust valve. This effectively removes water from the zeolite molecular sieve, allowing it to be reused multiple times and reducing costs.
[0021] 2. By rotating the turntable, the through-channels are connected to the gas supply pipe and exhaust valve, or the oxygen production outlet valve and oxygen production inlet valve, respectively. This allows the molecular sieve to switch between water removal and normal oxygen production operations, improving its practicality. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the structure of this utility model;
[0023] Figure 2 This is a cross-sectional view of the structure of this utility model;
[0024] Figure 3 This is a top sectional view of a partial structure of this utility model;
[0025] Figure 4 This is a utility model Figure 2 Enlarged view of point A in the image.
[0026] Reference numerals: 1. Outer shell; 2. Side cover; 3. Exhaust fan; 4. Gas supply pipe; 5. Drying heating wire; 6. Exhaust valve; 7. Filter screen; 8. Zeolite molecular sieve; 9. Circular block; 10. Through groove; 11. Connecting rod; 12. Turntable; 13. Support block; 14. Oxygen generator exhaust valve; 15. Oxygen generator inlet valve; 16. Gas collection hood; 17. Limit bolt; 18. Guide pointer; 19. Sealing ring. Detailed Implementation
[0027] The present invention will be further described in detail below with reference to the accompanying drawings.
[0028] Example 1:
[0029] refer to Figure 1 , Figure 2 , Figure 4A molecular sieve dehydration structure includes an outer shell 1, a side cover 2 welded to one side of the outer shell 1, and a suction fan 3 bolted to the side of the side cover 2 away from the outer shell 1. The output end of the suction fan 3 is fixedly connected to an air supply pipe 4, and a drying heating wire 5 is fixedly sleeved on the surface of the air supply pipe 4. The output end of the suction fan 3 is connected to the outside. Filter screens 7 are bolted to both sides inside the outer shell 1, and zeolite molecular sieves 8 are filled between the two filter screens 7. An exhaust valve 6 is bolted to the top of the outer shell 1 near the side cover 2. By supplying heated and dried air into the interior of the outer shell 1, the heated and dried air passes through the zeolite molecular sieves 8, drying the moisture inside the zeolite molecular sieves 8, and the moisture-containing steam is discharged through the exhaust valve 6. This effectively dehydrates the zeolite molecular sieves 8, allowing them to be reused multiple times and reducing costs.
[0030] Brief description of usage: Air is drawn into the air supply pipe 4 by turning on the suction fan 3, and then...
[0031] The drying heating wire 5 heats and dries the air inside the gas supply pipe 4, allowing the heated and dried air to enter the outer shell 1. When the heated and dried air passes through the zeolite molecular sieve 8, it dries the moisture inside the zeolite molecular sieve 8. Finally, the moisture-containing steam is discharged from the outer shell 1 through the exhaust valve 6 at the top, thus removing water from the zeolite molecular sieve 8.
[0032] Example 2:
[0033] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 A molecular sieve dewatering structure includes two filter screens 7 with circular blocks 9 rotatably connected to an outer shell 1 on opposite sides. The interiors of the two circular blocks 9 each have channels 10 communicating with a gas supply pipe 4 and an exhaust valve 6. A connecting rod 11, rotatably connected to the filter screens 7, is bolted between the two channels 10. A turntable 12, bolted to the circular blocks 9, is rotatably connected to the top of the outer shell 1. Rotating the turntable 12 connects the channels 10 to the gas supply pipe 4 and exhaust valve 6, or to the oxygen supply valve 14 and oxygen inlet valve 15. This allows the molecular sieve to switch between dewatering and normal oxygen production operations, improving its practicality.
[0034] refer to Figure 1 , Figure 2 The top and bottom of the outer shell 1, away from the side cover 2, are respectively connected to an oxygen-generating outlet valve 14 and an oxygen-generating inlet valve 15, which are connected to the through groove 10. When the through groove 10 inside the circular block 9 is rotated to connect with the oxygen-generating outlet valve 14 and the oxygen-generating inlet valve 15, the zeolite molecular sieve 8 adsorbs nitrogen molecules entering the air, while allowing oxygen molecules to pass through, thereby achieving the separation of nitrogen and oxygen.
[0035] refer to Figure 2 Each of the two circular blocks 9 has an air collection hood 16 attached to one side of the block that is close to the other. This allows air to be concentrated and enter the interior of the channel 10, improving air transport efficiency.
[0036] refer to Figure 1 , Figure 2 A limiting bolt 17, which engages with the outer casing 1, is threaded through one side of the turntable 12. A guide pointer 18 is bolted to the top of the turntable 12 away from the limiting bolt 17. By tightening the limiting bolt 17, the turntable 12 is locked, thereby limiting the circular block 9. At the same time, the guide pointer 18 is parallel to the through groove 10. By passing through the guide pointer 18, the through groove 10 can be adjusted so that the through groove 10 is connected to the gas supply pipe 4 and the exhaust valve 6 or the oxygen supply valve 14 and the oxygen supply valve 15.
[0037] refer to Figure 3 Both circular blocks 9 have sealing rings 19 fixedly fitted onto their surfaces, which are slidably connected to the outer casing 1. This improves the sealing between the circular blocks 9 and the outer casing 1, preventing gas from leaking out of the through groove 10.
[0038] refer to Figure 3 A support block 13, welded to the outer shell 1, is slidably connected to the surface of the circular block 9. This provides vertical support and limits the rotation of the circular block 9, while also improving rotational stability.
[0039] Brief description of the operation: By rotating the turntable 12, the two circular blocks 9 rotate synchronously inside the outer shell 1 via the connecting rod 11. This causes the circular blocks 9 to drive the through grooves 10 to connect with the gas supply pipe 4 and the exhaust valve 6, or the oxygen supply valve 14 and the oxygen intake valve 15, respectively. The circular blocks 9 are then secured by the torsion limit bolts 17. When the through grooves 10 inside the circular blocks 9 are connected to the gas supply pipe 4 and the exhaust valve 6, water can be removed from the zeolite molecular sieve 8 inside the outer shell 1. When the through grooves 10 inside the circular blocks 9 are connected to the oxygen supply valve 14 and the oxygen intake valve 15, the zeolite molecular sieve 8 adsorbs nitrogen molecules entering the air, while allowing oxygen molecules to pass through, thus achieving the separation of nitrogen and oxygen.
[0040] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.
Claims
1. A molecular sieve water removal structure, comprising an outer shell (1), characterized in that: A side cover (2) is welded to one side of the outer shell (1). A suction fan (3) is bolted to the side of the side cover (2) away from the outer shell (1). The output end of the suction fan (3) is fixedly connected to a gas supply pipe (4). A drying heating wire (5) is fixedly sleeved on the surface of the gas supply pipe (4). The output end of the suction fan (3) is connected to the outside. Filter screens (7) are bolted to both sides inside the outer shell (1). Zeolite molecular sieves (8) are filled between the two filter screens (7). An exhaust valve (6) is bolted to the top of the outer shell (1) near the side cover (2).
2. The molecular sieve water removal structure according to claim 1, characterized in that: On the side of the two filters (7) that are far apart from each other, there is a circular block (9) that is rotatably connected to the outer shell (1). The interior of the two circular blocks (9) is provided with a through groove (10) that is connected to the air supply pipe (4) and the exhaust valve (6). A connecting rod (11) that is rotatably connected to the filter (7) is bolted between the two through grooves (10). A turntable (12) that is bolted to the circular block (9) is rotatably connected to the top of the outer shell (1).
3. The molecular sieve water removal structure according to claim 2, characterized in that: The top and bottom of the outer shell (1) away from the side cover (2) are respectively bolted with an oxygen-generating outlet valve (14) and an oxygen-generating inlet valve (15) connected to the through groove (10).
4. The molecular sieve water removal structure according to claim 2, characterized in that: Both of the two circular blocks (9) are bolted with gas collection hoods (16) that work in conjunction with the through grooves (10) on the side that are close to each other.
5. The molecular sieve water removal structure according to claim 2, characterized in that: The turntable (12) has a threaded connection on one side inside, which is connected to the outer shell (1) by a limiting bolt (17). A guide pointer (18) is bolted to the top of the turntable (12) away from the limiting bolt (17).
6. The molecular sieve water removal structure according to claim 2, characterized in that: Both circular blocks (9) have sealing rings (19) that are slidably connected to the outer shell (1) on their surfaces.
7. The molecular sieve water removal structure according to claim 2, characterized in that: The circular block (9) has a support block (13) that is welded to the outer shell (1) and is slidably connected to its surface.