Multi-cavity molecular sieve

Abstract

The utility model provides a multi-cavity molecular sieve, which belongs to the technical field of oxygen production equipment and comprises an aluminum middle frame, an oxygen bin cavity is formed in the aluminum middle frame, two groups of zeolite bin cavities are formed in the aluminum middle frame, and filter components are arranged at the top and the bottom of the aluminum middle frame and used for filtering nitrogen in air to complete preparation of oxygen. The filter assembly comprises a plastic upper cover, a plurality of groups of first locking screws are mounted in the plastic upper cover in a penetrating manner, two groups of air inlets are formed in the top of the plastic upper cover, an air outlet is formed in the top of the plastic upper cover, a one-way valve is arranged in the air outlet, and sealing caps are mounted outside the air inlets and the air outlet in a sleeving manner. According to the utility model, the filter assembly is arranged, so that nitrogen can be filtered, oxygen can be stored, meanwhile, the sealing performance is good, the performance of zeolite can be effectively maintained, the stability of oxygen concentration and pulse quantity is provided, and the service life of the molecular sieve is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of oxygen production equipment technology, and in particular to a multi-cavity molecular sieve. Background Technology

[0002] Oxygen concentrators, as an important oxygen supply device, are widely used in medical, industrial, high-altitude, home healthcare, and scientific research fields. Molecular sieves are the core components of oxygen concentrators. Molecular sieves utilize their microporous structure with specific pore sizes to preferentially adsorb nitrogen molecules from the air under pressure, while oxygen molecules, due to their smaller size, pass through easily, thus achieving the separation of nitrogen and oxygen. The adsorbed nitrogen is released, and the molecular sieve is regenerated. This cycle continues, continuously producing high-purity oxygen.

[0003] While existing oxygen generator molecular sieves can separate nitrogen and oxygen, traditional oxygen generator molecular sieves use a single-cavity structure. Nitrogen needs to diffuse to the deep pore adsorption sites of the particles, which results in a long path, slow movement of the adsorption front, and high molecular diffusion resistance, affecting the oxygen production rate. At the same time, the entire cavity needs to be heated and purged during desorption, resulting in low thermal energy utilization. Furthermore, the PSA cycle pressure fluctuates frequently. Single-cavity molecular sieves are prone to pulverization due to stress concentration, leading to a high wear rate and affecting the service life of the molecular sieve. Utility Model Content

[0004] To address the aforementioned problems, this invention proposes a multi-cavity molecular sieve, which more precisely solves the problems of slow oxygen generation rate and poor resistance to compressive fatigue in existing molecular sieves.

[0005] This utility model is achieved through the following technical solution:

[0006] This invention proposes a multi-cavity molecular sieve, comprising an aluminum frame, an oxygen chamber cavity within the aluminum frame, two sets of zeolite chamber cavities within the aluminum frame, and filter components at the top and bottom of the aluminum frame for filtering nitrogen from the air to prepare oxygen.

[0007] Furthermore, the filter assembly includes a plastic cover, with multiple sets of first locking screws installed inside the plastic cover. The top of the plastic cover has two sets of air inlets and an air outlet. A one-way valve is installed inside the air outlet, and sealing caps are fitted over the air inlets and air outlet.

[0008] Furthermore, the first locking screw is screwed together with the aluminum frame by threads, the air inlet is correspondingly set with the zeolite chamber cavity, the air outlet is correspondingly set with the oxygen chamber cavity, and sealing rings are fitted around the air inlet and air outlet.

[0009] Furthermore, a silicone sealing gasket is provided at the bottom of the plastic cover, a spring is provided below the air inlet, a first screen is provided below the spring, and a first filter pad is provided at the bottom of the first screen.

[0010] Furthermore, the silicone sealing gasket of the upper cover is sleeved outside the first screen, and the surface of the first filter pad has numerous tiny pores. The first filter pad is located at the top of the zeolite chamber cavity.

[0011] Furthermore, the filter assembly also includes a plastic lower cover, inside which are installed two sets of oxygen chamber throttling valves, inside which are installed a zeolite chamber throttling valve, inside which are installed multiple sets of nylon balls, inside which are installed multiple sets of second locking screws, and at the bottom of the plastic lower cover, an auxiliary handle is rotatably installed, and a handle screw is installed through the side wall of the auxiliary handle.

[0012] Furthermore, the plastic lower cover is provided with a lower cover silicone sealing gasket on the top, the lower cover silicone sealing gasket is provided with a second screen on the top, the second screen is provided with a second filter pad on the top, and the second filter pad is located at the bottom of the zeolite chamber cavity.

[0013] Furthermore, a flow channel is provided inside the plastic lower cover, the zeolite chamber throttle valve is located between the two sets of zeolite chamber cavities, and the second locking screw aluminum frame is screwed together by threads.

[0014] The beneficial effects of this utility model are:

[0015] This invention proposes a multi-cavity molecular sieve, comprising an oxygen chamber cavity, two sets of zeolite chamber cavities, a one-way valve, a first screen, a first filter pad, a second screen, a second filter pad, an oxygen chamber throttling valve, and a zeolite chamber throttling valve. This design can filter nitrogen and store oxygen, providing stability in oxygen concentration and pulse quantity, improving oxygen production rate, and extending the service life of the molecular sieve. With the upper and lower silicone sealing gaskets, the oxygen chamber cavity and the zeolite chamber cavity are independently separated, achieving both lateral and vertical compression sealing for excellent airtightness. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is an exploded top view of the entire utility model;

[0018] Figure 3 This is an exploded view of the overall bottom of this utility model;

[0019] Figure 4 This is a cross-sectional view of the plastic lower cover portion of this utility model.

[0020] The attached figures are labeled as follows:

[0021] In the diagram: 1. Aluminum frame; 2. Plastic top cover; 3. Plastic bottom cover; 4. Oxygen chamber cavity; 5. Zeolite chamber cavity; 6. First locking screw; 7. Air inlet; 8. Air outlet; 9. One-way valve; 10. Sealing cap; 11. Silicone sealing gasket for top cover; 12. Spring; 13. First screen; 14. First filter pad; 15. Oxygen chamber throttle valve; 16. Zeolite chamber throttle valve; 17. Nylon ball; 18. Second locking screw; 19. Auxiliary handle; 20. Handle screw; 21. Silicone sealing gasket for bottom cover; 22. Second screen; 23. Second filter pad. Detailed Implementation

[0022] To more clearly and completely illustrate the technical solution of this utility model, the following description, in conjunction with the accompanying drawings, will further explain this utility model.

[0023] Please refer to Figures 1-4 This invention proposes a multi-cavity molecular sieve, comprising an aluminum frame 1, an oxygen chamber 4 for storing oxygen, and two sets of zeolite chambers 5 for filtering nitrogen. Filter components are located at the top and bottom of the aluminum frame 1 to filter nitrogen from the air, thus preparing oxygen. Air is compressed by the compressor and PSA valve in the oxygen generator and then released into the two zeolite chambers 5 of the molecular sieve. The zeolite in the zeolite chambers 5 adsorbs nitrogen, producing high-purity oxygen, which then enters the oxygen chamber 4 at a balanced pressure through the oxygen chamber throttle valve 15. The oxygen in the oxygen chamber 4 is then delivered to the nasal cannula under certain pressure through the PSA valve in the oxygen generator for the user to inhale oxygen. This design filters nitrogen and stores oxygen, ensuring the stability of oxygen concentration and pulse rate, and extending the service life of the molecular sieve.

[0024] The filter assembly includes a plastic cover 2, with multiple sets of first locking screws 6 installed inside the plastic cover 2 for fixing the plastic cover 2 to the aluminum frame 1. The top of the plastic cover 2 has two air inlets 7 for air intake and an air outlet 8 for oxygen exhaust. A one-way valve 9 is installed inside the air outlet 8 to prevent air from entering the oxygen chamber cavity 4. Sealing caps 10 are fitted over the air inlets 7 and outlet 8. The first locking screws 6 are threaded onto the aluminum frame 1. The air inlets 7 correspond to the zeolite chamber cavity 5, and the air outlet 8 corresponds to the oxygen chamber cavity 4. Sealing rings are fitted over the air inlets 7 and outlet 8. A silicone sealant is installed at the bottom of the plastic cover 2. The sealing gasket 11 can achieve good sealing performance by both side compression and top and bottom compression. A spring 12 is provided below the air inlet 7 to press the first filter screen and ensure the sealing performance of the first filter screen and the first filter pad 14. A first screen 13 is provided below the spring 12, and a first filter pad 14 is provided at the bottom of the first screen 13 for filtering air. The silicone sealing gasket 11 of the upper cover is sleeved on the outside of the first screen 13. The surface of the first filter pad 14 has many small pores. The first filter pad 14 is located at the top of the zeolite chamber cavity 5. Air enters the zeolite chamber cavity 5 through the air inlet 7 and is filtered after passing through the first filter screen and the first filter pad 14. After the zeolite in the zeolite chamber cavity 5 adsorbs nitrogen, oxygen enters the oxygen chamber cavity 4 and is finally discharged through the air outlet 8.

[0025] The filter assembly also includes a plastic lower cover 3, which contains two sets of oxygen chamber throttling valves 15 for controlling airflow pressure, pulse, and oxygen concentration. The plastic lower cover 3 also contains a zeolite chamber throttling valve 16 for regulating the air pressure in the two zeolite chamber cavities 5, controlling the pulse and oxygen concentration. The plastic lower cover 3 contains multiple sets of nylon balls 17 for sealing the flow channel ports. Multiple sets of second locking screws 18 are installed inside the plastic lower cover 3 for securing it to the aluminum frame 1. An auxiliary handle 19 is rotatably mounted on the bottom of the plastic lower cover 3, and the auxiliary handle 19 can rotate 90 degrees for easy handling from the oxygen generator. The molecular sieve is removed from the container. A handle screw 20 is installed through the side wall of the auxiliary handle 19 for installing the auxiliary handle 19. The top of the plastic lower cover 3 is provided with a lower cover silicone sealing gasket 21, which can be squeezed and sealed from both sides and from top and bottom to achieve good sealing performance. The top of the lower cover silicone sealing gasket 21 is provided with a second screen 22, and the top of the second screen 22 is provided with a second filter pad 23 for filtering the gas. The second filter pad 23 is located at the bottom of the zeolite chamber cavity 5. A flow channel is opened in the plastic lower cover 3. The zeolite chamber throttle valve 16 is located between the two sets of zeolite chamber cavities 5. The second locking screw 18 is screwed together with the aluminum frame 1 by threads.

[0026] Of course, there may be other implementations of this utility model. Based on this implementation, other implementations obtained by those skilled in the art without any creative effort are all within the scope of protection of this utility model.

Claims

1. A multi-cavity molecular sieve, characterized in that, The device includes an aluminum frame, within which an oxygen chamber cavity is formed. The aluminum frame also contains two sets of zeolite chamber cavities. Filter components are installed at the top and bottom of the aluminum frame to filter nitrogen from the air, thereby completing the preparation of oxygen.

2. The multi-cavity molecular sieve according to claim 1, characterized in that, The filter assembly includes a plastic cover, with multiple sets of first locking screws installed inside the plastic cover. The top of the plastic cover has two sets of air inlets and an air outlet. A one-way valve is installed inside the air outlet, and sealing caps are fitted over the air inlets and air outlet.

3. The multi-cavity molecular sieve according to claim 2, characterized in that, The first locking screw is screwed together with the aluminum frame by threads. The air inlet is correspondingly set with the zeolite chamber cavity, and the air outlet is correspondingly set with the oxygen chamber cavity. Sealing rings are fitted around the air inlet and the air outlet.

4. The multi-cavity molecular sieve according to claim 2, characterized in that, The bottom of the plastic cover is provided with a silicone sealing gasket, a spring is provided below the air inlet, a first screen is provided below the spring, and a first filter pad is provided at the bottom of the first screen.

5. A multi-cavity molecular sieve according to claim 4, characterized in that, The silicone sealing gasket of the upper cover is sleeved on the outside of the first screen, and the surface of the first filter pad has numerous small pores. The first filter pad is located at the top of the zeolite chamber cavity.

6. The multi-cavity molecular sieve according to claim 1, characterized in that, The filter assembly also includes a plastic bottom cover, inside which are installed two sets of oxygen chamber throttling valves, inside which are installed a zeolite chamber throttling valve, inside which are installed multiple sets of nylon balls, inside which are installed multiple sets of second locking screws, and at the bottom of the plastic bottom cover, an auxiliary handle is rotatably installed, and a handle screw is installed through the side wall of the auxiliary handle.

7. A multi-cavity molecular sieve according to claim 6, characterized in that, The plastic lower cover is provided with a silicone sealing gasket on the top, and a second screen is provided on the top of the silicone sealing gasket. A second filter pad is provided on the top of the second screen, and the second filter pad is located at the bottom of the zeolite chamber cavity.

8. A multi-cavity molecular sieve according to claim 6, characterized in that, The plastic lower cover has a flow channel, the zeolite chamber throttle valve is located between the two zeolite chamber cavities, and the second locking screw aluminum frame is screwed together by threads.

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