Nitrogen recovery device for medical molecular sieve oxygen production equipment

Abstract

The utility model relates to the field of molecular sieve oxygen generators, in particular to a nitrogen recovery device of medical molecular sieve oxygen generating equipment, which comprises a bottom plate, the device further comprises an oil-water separation barrel, an oil-water separator, a second nitrogen conveying pipe, a filter barrel, a limiting groove, a sliding block and an activated carbon filter plate, a limiting ring is installed at the top of the bottom plate, the oil-water separation barrel is installed in the limiting ring, the oil-water separator is arranged in the oil-water separation barrel, and the second nitrogen conveying pipe is connected to the upper end of the right side of the oil-water separation barrel. The other end of the second nitrogen conveying pipe is connected with a filter cartridge, two limiting grooves are symmetrically formed in the inner side wall of the filter cartridge, and sliding blocks are arranged in the limiting grooves; according to the medical molecular sieve oxygen generating device, the nitrogen recycling and purifying structure is arranged, so that nitrogen can be purified and recycled, and the problems that common medical molecular sieve oxygen generating devices are lack of nitrogen recycling structures, nitrogen cannot be purified and recycled, resources are wasted, and the practicability of the oxygen generating devices is reduced are solved.

Description

Technical Field

[0001] The utility model relates to the field of molecular sieve oxygen generators, in particular to a nitrogen recovery device for medical molecular sieve oxygen generators. Background Art

[0002] Medical molecular sieve oxygen concentrator is a medical device based on pressure swing adsorption technology, which uses zeolite molecular sieve as adsorbent to separate oxygen and nitrogen in the air.

[0003] Common medical molecular sieve oxygen concentrators usually only separate pure oxygen, and nitrogen will be treated as waste gas. It can produce oxygen, but lacks a nitrogen recovery structure and cannot purify and recycle nitrogen, resulting in a waste of resources and reducing the practicality of the oxygen concentrator.

[0004] Therefore, in view of the fact that the above-mentioned medical molecular sieve oxygen generator lacks a nitrogen recovery structure and is unable to purify and recycle nitrogen, a nitrogen recovery device for medical molecular sieve oxygen generator can be designed. The oil-water separator inside the oil-water separation cylinder can be used to absorb the oil and water in the nitrogen, so that the clean nitrogen is transmitted to the inside of the filter cylinder through the second nitrogen delivery pipe. At the same time, the activated carbon filter plate inside the filter cylinder can be used to perform the final filtration of the nitrogen, thereby ensuring that the pure nitrogen can be recovered and stored through the nitrogen recovery pipe, thereby avoiding waste of resources and improving practicality. Utility Model Content

[0005] In order to overcome the problem that common medical molecular sieve oxygen concentrators lack a nitrogen recovery structure and are unable to purify and recycle nitrogen, thereby causing a waste of resources and reducing the practicality of the oxygen concentrator.

[0006] The technical solution of the utility model is as follows: a nitrogen recovery device for medical molecular sieve oxygen production equipment comprises a bottom plate; an oil-water separation cylinder, an oil-water separator, a second nitrogen delivery pipe, a filter cylinder, a limiting groove, a slider, and an activated carbon filter plate; a limiting ring is installed on the top of the bottom plate, an oil-water separation cylinder is installed inside the limiting ring, an oil-water separation cylinder is provided inside the oil-water separation cylinder, an oil-water separator is provided inside the oil-water separation cylinder, an upper right end of the oil-water separation cylinder is connected to the second nitrogen delivery pipe, the other end of the second nitrogen delivery pipe is connected to the filter cylinder, two limiting grooves are symmetrically provided on the inner side wall of the filter cylinder, a slider is provided inside the limiting groove, and an activated carbon filter plate is connected between the two sliders.

[0007] Preferably, a limiting ring can be used to limit the position of the oil-water separation cylinder, making it more stable during operation, and the oil-water separator inside the oil-water separation cylinder can be used to absorb the oil and water in the nitrogen, so that the clean nitrogen is transmitted to the interior of the filter cylinder through the second nitrogen delivery pipe. At the same time, the activated carbon filter plate inside the filter cylinder can be used to perform a final filtration on the nitrogen, thereby ensuring that the pure nitrogen can be recovered and stored through the nitrogen recovery pipe, thereby avoiding waste of resources and improving practicality.

[0008] Preferably, a slide rod is symmetrically installed inside the limiting groove, the top of the slide rod is connected with the slider, and two pull plates are symmetrically installed on the top of the activated carbon filter plate.

[0009] Preferably, a top cover is installed on the top of the filter cartridge, and a nitrogen recovery pipe is connected to the upper right end of the filter cartridge.

[0010] Preferably, an oxygen concentrator is provided on the top left side of the bottom plate, the top of the oxygen concentrator is connected to an air delivery pipe, a one-way valve is installed on the outside of the air delivery pipe, and the other end of the air delivery pipe is connected to a primary oxygen separation cylinder.

[0011] Preferably, a first molecular sieve is provided at the upper end of the interior of the primary oxygen separation cylinder, and a mounting bracket is provided at the top of the bottom plate corresponding to the left side of the filter cylinder, a secondary oxygen separation cylinder is provided on the inner side of the upper end of the mounting bracket, an oxygen interface is connected to the right side of the secondary oxygen separation cylinder, and the left side of the secondary oxygen separation cylinder is connected to the upper end of the right side of the primary oxygen separation cylinder, and a second molecular sieve is provided inside the secondary oxygen separation cylinder.

[0012] Preferably, a nitrogen flow pipe is provided at the bottom of the secondary oxygen separation cylinder, the top of the nitrogen flow pipe is communicated with the bottom of the secondary oxygen separation cylinder, and the bottom of the nitrogen flow pipe is connected to a pressure control valve.

[0013] Preferably, an air supply pipe is connected through the left side of the pressure control valve, the right end of the air supply pipe is connected to the oil-water separation cylinder, the other end of the air supply pipe is connected to a high-pressure blower, and the left side of the top of the high-pressure blower is connected to a first nitrogen delivery pipe, and the other end of the first nitrogen delivery pipe is connected to the lower right end of the primary oxygen separation cylinder.

[0014] Beneficial effects of the utility model:

[0015] 1. The limit ring can be used to limit the position of the oil-water separation cylinder, making it more stable during operation. The oil-water separator inside the oil-water separation cylinder can be used to absorb the oil and water in the nitrogen, so that the clean nitrogen is transmitted to the inside of the filter cylinder through the second nitrogen delivery pipe. At the same time, the activated carbon filter plate inside the filter cylinder can be used to perform the final filtration of the nitrogen, thereby ensuring that the pure nitrogen can be recovered and stored through the nitrogen recovery pipe, thereby avoiding the waste of resources and improving practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a schematic diagram of the three-dimensional structure of the nitrogen recovery device of the medical molecular sieve oxygen production equipment of the present utility model;

[0017] Figure 2 Shown is a side view schematic diagram of the nitrogen recovery device of the medical molecular sieve oxygen production equipment of the present utility model;

[0018] Figure 3 Shown is a schematic diagram of the cross-sectional structure of the nitrogen recovery device of the medical molecular sieve oxygen production equipment of the present utility model;

[0019] Figure 4 Shown is a schematic diagram of the high-pressure blower connection structure of the nitrogen recovery device of the medical molecular sieve oxygen production equipment of the utility model;

[0020] Figure 5 Shown is a schematic diagram of the explosion structure of the filter cartridge of the nitrogen recovery device of the medical molecular sieve oxygen production equipment of the present invention.

[0021] Explanation of the accompanying symbols: 1. Base plate; 2. Limiting ring; 3. Oil-water separation cylinder; 4. Oil-water separator; 5. Second nitrogen delivery pipe; 6. Filter cylinder; 7. Limiting groove; 8. Slider; 9. Activated carbon filter plate; 10. Sliding rod; 11. Pull plate; 12. Top cover; 13. Nitrogen recovery pipe; 14. Oxygen generator; 15. Air delivery pipe; 16. One-way valve; 17. Primary oxygen separation cylinder; 18. First molecular sieve; 19. Mounting bracket; 20. Secondary oxygen separation cylinder; 21. Oxygen interface; 22. Second molecular sieve; 23. Nitrogen guide pipe; 24. Pressure control valve; 25. Air supply pipe; 26. High-pressure blower; 27. First nitrogen delivery pipe. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] See also Figure 1-Figure 5The utility model provides an embodiment: a nitrogen recovery device for medical molecular sieve oxygen production equipment, comprising a bottom plate 1; an oil-water separation cylinder 3, an oil-water separator 4, a second nitrogen delivery pipe 5, a filter cylinder 6, a limiting groove 7, a slider 8, and an activated carbon filter plate 9. A limiting ring 2 is installed on the top of the bottom plate 1, an oil-water separation cylinder 3 is installed inside the limiting ring 2, an oil-water separation cylinder 3 is provided with an oil-water separator 4 inside the oil-water separation cylinder 3, an upper right end of the oil-water separation cylinder 3 is connected to the second nitrogen delivery pipe 5, the other end of the second nitrogen delivery pipe 5 is connected to the filter cylinder 6, and two limiting grooves 7 are symmetrically provided on the inner side wall of the filter cylinder 6. The limiting groove 7 A slider 8 is provided inside, and an activated carbon filter plate 9 is connected between the two sliders 8. The limit ring 2 can be used to limit the position of the oil-water separation cylinder 3, making it more stable during operation. The oil-water separator 4 inside the oil-water separation cylinder 3 can be used to absorb the oil and water in the nitrogen, so that the clean nitrogen is transmitted to the inside of the filter cylinder 6 through the second nitrogen delivery pipe 5. At the same time, the activated carbon filter plate 9 inside the filter cylinder 6 can be used to perform the final filtration of the nitrogen, thereby ensuring that the pure nitrogen can be recovered and stored through the nitrogen recovery pipe 13, thereby avoiding the waste of resources and improving practicality.

[0024] See also Figure 1-Figure 5 In this embodiment, a slide bar 10 is symmetrically installed inside the limiting groove 7. The top of the slide bar 10 is connected to the slider 8, and two pull plates 11 are symmetrically installed on the top of the activated carbon filter plate 9. The limiting groove 7 can be used to limit the position of the slider 8, and by pulling the pull plates 11, the activated carbon filter plate 9 can drive the slider 8 to move upward on the outside of the slide bar 10, thereby facilitating the removal of the activated carbon filter plate 9 from the inside of the filter cartridge 6, so as to facilitate the cleaning and replacement of the activated carbon filter plate 9. A top cover 12 is installed on the top of the filter cartridge 6, and a nitrogen recovery pipe 13 is connected to the upper right end of the filter cartridge 6. The top of the filter cartridge 6 can be sealed by the top cover 12 to prevent nitrogen leakage, and the pure nitrogen in the filter cartridge 6 can be connected to the storage equipment through the nitrogen recovery pipe 13. An oxygen generator 14 is provided on the top left side of the bottom plate 1. The top of the oxygen generator 14 is connected to an air delivery pipe 15. A one-way valve 16 is installed on the outside of the air delivery pipe 15, and the other end of the air delivery pipe 15 is connected to a primary oxygen separation cylinder 17. The mixed gas can be delivered to the primary oxygen separation cylinder 17 through the air delivery pipe 15 through the oxygen generator 14, and the one-way valve 16 can be used to control the flow rate of gas delivery.

[0025] See also Figure 1-Figure 5In this embodiment, a first molecular sieve 18 is provided at the upper end of the primary oxygen separation cylinder 17, and a mounting bracket 19 is provided on the top of the bottom plate 1 corresponding to the left side of the filter cylinder 6. A secondary oxygen separation cylinder 20 is provided on the inner side of the upper end of the mounting bracket 19. The right side of the secondary oxygen separation cylinder 20 is connected to an oxygen interface 21, and the left side of the secondary oxygen separation cylinder 20 is connected to the upper right end of the primary oxygen separation cylinder 17. A second molecular sieve 22 is provided inside the secondary oxygen separation cylinder 20. The nitrogen in the primary oxygen separation cylinder 17 can be absorbed by the first molecular sieve 18 to separate the oxygen and nitrogen. The separated oxygen will move upward and enter the secondary oxygen separation cylinder 20. The nitrogen in the oxygen can be absorbed again by the second molecular sieve 22 inside the secondary oxygen separation cylinder 20, so that the pure oxygen can be connected to the oxygen storage device through the oxygen interface 21. A nitrogen guide pipe 23 is provided at the bottom of the secondary oxygen separation cylinder 20. The top of the guide pipe 23 is connected to the bottom of the secondary oxygen separation cylinder 20, and the bottom of the nitrogen guide pipe 23 is connected to a pressure control valve 24. The nitrogen separated in the secondary oxygen separation cylinder 20 can be guided through the nitrogen guide pipe 23 to communicate with the air supply pipe 25 in the pressure control valve 24. The left side of the pressure control valve 24 is connected to the air supply pipe 25. The right end of the air supply pipe 25 is connected to the oil-water separation cylinder 3. The other end of the air supply pipe 25 is connected to a high-pressure blower 26. The left side of the top of the high-pressure blower 26 is connected to a first nitrogen delivery pipe 27. The other end of the first nitrogen delivery pipe 27 is connected to the lower right end of the primary oxygen separation cylinder 17. The nitrogen in the primary oxygen separation cylinder 17 can be delivered to the high-pressure blower 26 through the first nitrogen delivery pipe 27, and the nitrogen can be delivered to the air supply pipe 25 through the high-pressure blower 26. The nitrogen can be discharged into the filter cylinder 6 through the air supply pipe 25 to achieve the purpose of purifying and recovering the nitrogen.

[0026] During operation, the mixed gas is transported to the primary oxygen separation cylinder 17 through the air delivery pipe 15 by the oxygen concentrator 14, and the flow rate of the gas delivery can be controlled by the one-way valve 16. The nitrogen in the primary oxygen separation cylinder 17 can be absorbed by the first molecular sieve 18 to separate the oxygen and nitrogen. The separated oxygen will move upward and enter the secondary oxygen separation cylinder 20. The nitrogen in the oxygen can be absorbed again by the second molecular sieve 22 inside the secondary oxygen separation cylinder 20, so that the pure oxygen can be connected to the oxygen storage device through the oxygen interface 21. The nitrogen separated in the secondary oxygen separation cylinder 20 can be diverted through the nitrogen guide pipe 23 to connect it to the pressure control valve 2 4 is connected, and the nitrogen in the primary oxygen separation cylinder 17 can be transported to the high-pressure blower 26 through the first nitrogen delivery pipe 27, and the nitrogen can be transported to the air delivery pipe 25 through the high-pressure blower 26, and the nitrogen can be discharged into the oil-water separation cylinder 3 through the air delivery pipe 25, and the oil-water separator 4 inside the oil-water separation cylinder 3 can be used to absorb the oil and water in the nitrogen, so that the clean nitrogen is transmitted to the inside of the filter cylinder 6 through the second nitrogen delivery pipe 5, and at the same time, the activated carbon filter plate 9 inside the filter cylinder 6 can be used to perform the final filtration of the nitrogen, so as to ensure that the pure nitrogen can be recovered and stored through the nitrogen recovery pipe 13, thereby avoiding the waste of resources and improving practicality.

[0027] Through the above steps, by setting up a nitrogen recovery and purification structure, nitrogen can be purified and recycled, so as to solve the problem that common medical molecular sieve oxygen production equipment cannot purify and recycle nitrogen due to the lack of a nitrogen recovery structure, thereby causing waste of resources and reducing the practicality of the oxygen production equipment.

Claims

1. A nitrogen recovery device for a medical molecular sieve oxygen production equipment, comprising a bottom plate (1); characterized in that: The invention also includes an oil-water separation cylinder (3), an oil-water separator (4), a second nitrogen delivery pipe (5), a filter cylinder (6), a limiting groove (7), a slider (8), and an activated carbon filter plate (9). A limiting ring (2) is installed on the top of the bottom plate (1), an oil-water separation cylinder (3) is installed inside the limiting ring (2), an oil-water separator (4) is arranged inside the oil-water separation cylinder (3), a second nitrogen delivery pipe (5) is connected to the other end of the second nitrogen delivery pipe (5), and two limiting grooves (7) are symmetrically provided on the inner side wall of the filter cylinder (6). A slider (8) is arranged inside the limiting groove (7), and an activated carbon filter plate (9) is connected between the two sliders (8).

2. The nitrogen recovery device for medical molecular sieve oxygen production equipment according to claim 1, characterized in that: A slide bar (10) is symmetrically installed inside the limiting groove (7), the top of the slide bar (10) is connected to the slider (8), and two pull plates (11) are symmetrically installed on the top of the activated carbon filter plate (9).

3. The nitrogen recovery device for medical molecular sieve oxygen production equipment according to claim 1, characterized in that: A top cover (12) is installed on the top of the filter cartridge (6), and a nitrogen recovery pipe (13) is connected to the upper right end of the filter cartridge (6).

4. The nitrogen recovery device for medical molecular sieve oxygen production equipment according to claim 1, characterized in that: An oxygen concentrator (14) is provided on the left side of the top of the bottom plate (1), and an air delivery pipe (15) is connected to the top of the oxygen concentrator (14). A one-way valve (16) is installed on the outside of the air delivery pipe (15), and the other end of the air delivery pipe (15) is connected to a primary oxygen separation cylinder (17).

5. The nitrogen recovery device for medical molecular sieve oxygen production equipment according to claim 4, characterized in that: A first molecular sieve (18) is provided at the upper end of the primary oxygen separation cylinder (17), and a mounting frame (19) is provided on the top of the bottom plate (1) corresponding to the left side of the filter cylinder (6), a secondary oxygen separation cylinder (20) is provided on the inner side of the upper end of the mounting frame (19), an oxygen interface (21) is connected to the right side of the secondary oxygen separation cylinder (20), and the left side of the secondary oxygen separation cylinder (20) is communicated with the upper end of the right side of the primary oxygen separation cylinder (17), and a second molecular sieve (22) is provided inside the secondary oxygen separation cylinder (20).

6. The nitrogen recovery device for medical molecular sieve oxygen production equipment according to claim 5, characterized in that: A nitrogen flow conduit (23) is provided at the bottom of the secondary oxygen separation cylinder (20), the top of the nitrogen flow conduit (23) is communicated with the bottom of the secondary oxygen separation cylinder (20), and the bottom of the nitrogen flow conduit (23) is connected to a pressure control valve (24).

7. The nitrogen recovery device for medical molecular sieve oxygen production equipment according to claim 6, characterized in that: An air supply pipe (25) is connected to the left side of the pressure control valve (24), the right end of the air supply pipe (25) is connected to the oil-water separation cylinder (3), the other end of the air supply pipe (25) is connected to a high-pressure blower (26), and the left side of the top of the high-pressure blower (26) is connected to a first nitrogen delivery pipe (27), and the other end of the first nitrogen delivery pipe (27) is connected to the lower right end of the primary oxygen separation cylinder (17).

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