Air inlet device for protecting molecular sieve of oxygen generator
By using a combination of a double-layer ore screen tube structure and alumina molecular sieve in the intake device of the oxygen generator, the oxygen-generating molecular sieve is solved due to direct airflow impact and water absorption problems, and the protection and purity of the molecular sieve are improved.
Patent Information
- Application Number
- CN202421804298.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-29
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-07-29
AI Technical Summary
In the air intake device of the adsorption tower of the existing oxygen generator, the ore screen tube is directly in contact with the oxygen-generating molecular sieve. The impact of compressed air causes the molecular sieve to decrease, which makes it difficult to analyze after absorbing water, resulting in reduced performance and reduced purity.
A double-layer ore sieve tube structure is adopted, and the middle is filled with alumina molecular sieve. The airflow impact is first absorbed through the alumina molecular sieve, protecting the oxygen-generating molecular sieve, preventing direct impact, and further purifying the air.
Effectively protect the oxygen-generating molecular sieve, prevent performance reduction, prolong life, and improve oxygen-generating purity.
Smart Images
Figure CN223170639U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of protecting oxygen-making molecular sieves, and more specifically, to an air inlet device for protecting the molecular sieves of an oxygen generator. Background Technique
[0002] At present, the air inlet device of the adsorption tower of a pressure swing adsorption oxygen generator uses a mineral sieve tube as the air inlet device. The mineral sieve tube is in direct contact with the oxygen-making molecular sieve. Compressed air with a pressure of 0.6 Mpa - 0.7 Mpa directly acts on the oxygen-making molecular sieve. The impact of the air flow on the oxygen-making molecular sieve is very large. Moreover, the oxygen-making molecular sieve has a certain adsorption performance for moisture in the compressed air. After the oxygen-making molecular sieve absorbs water, it is very difficult to precipitate, resulting in a decrease in the strength of the oxygen-making molecular sieve. The direct impact of the air flow will cause the oxygen-making molecular sieve near the mineral sieve tube to be damaged, such as pulverization and other problems. Finally, the performance of the oxygen-making molecular sieve near the mineral sieve tube decreases, and the oxygen production purity decreases. Content of the Utility Model
[0003] In view of the above technical problems in the related art, the utility model provides an air inlet device for protecting the molecular sieves of an oxygen generator, which can solve the above problems.
[0004] To achieve the above technical purpose, the technical solution of the utility model is realized as follows:
[0005] An air inlet device for protecting the molecular sieves of an oxygen generator, characterized in that: it includes a stainless steel flange. A first stainless steel pipe and a third stainless steel pipe are installed below the stainless steel flange. A first mineral sieve tube and a second mineral sieve tube are respectively installed below the first stainless steel pipe and the third stainless steel pipe. Alumina molecular sieve is filled between the first mineral sieve tube and the second mineral sieve tube. A second stainless steel pipe is connected below the first mineral sieve tube. A fourth stainless steel pipe is connected below the second mineral sieve tube. A first stainless steel plug is installed below the second stainless steel pipe. A hole is opened in the center of the first stainless steel plug, and a nut is arranged below the hole. A second stainless steel plug is installed at the bottom end of the fourth stainless steel pipe. A hole is opened in the center of the second stainless steel plug, and a bolt is arranged above the hole. The first stainless steel plug and the second stainless steel plug are connected by a bolt and a nut.
[0006] Further, the outer diameter of the second stainless steel pipe is larger than that of the fourth stainless steel pipe, the outer diameter of the first stainless steel pipe is larger than that of the third stainless steel pipe, and the outer diameter of the first mineral sieve tube is larger than that of the second mineral sieve tube.
[0007] Further, the first stainless steel pipe and the third stainless steel pipe, and the second stainless steel pipe and the fourth stainless steel pipe are both filled with alumina molecular sieve inside.
[0008] Further, the first mineral sieve tube and the second mineral sieve tube and the gaps therein are filled with alumina molecular sieve.
[0009] Advantages of the present utility model: The device of the present application has a simple structure, small volume, is convenient for processing and installation, has a low cost, and is convenient for maintenance. The ore sieve tube is made into a double-layer ore sieve tube structure, and alumina molecular sieve is filled in the middle. In this way, the air flow first directly acts on the alumina molecular sieve and then enters the oxygen-making molecular sieve. The alumina molecular sieve has good resistance to air flow impact and also has certain water absorption and water desorption performance. It not only prevents the air flow from directly acting on the oxygen-making molecular sieve, protects the oxygen-making molecular sieve, but also further purifies the compressed air entering the adsorption tower of the oxygen generator, thereby protecting the oxygen-making molecular sieve, preventing the performance of the oxygen-making molecular sieve from decreasing and causing the oxygen production purity to drop, and also extending the service life of the oxygen-making molecular sieve to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0011] The following further details the present utility model according to the drawings.
[0012] Figure 1 is a schematic structural diagram of an air inlet device for protecting the molecular sieve of an oxygen generator according to an embodiment of the present utility model;
[0013] Figure 2 is a sectional view taken along the AA direction of an air inlet device for protecting the molecular sieve of an oxygen generator according to an embodiment of the present utility model;
[0014] In the figure:
[0015] 1, stainless steel flange; 2, first stainless steel pipe; 3, first ore sieve tube; 4, second stainless steel pipe; 5, first stainless steel plug; 6, third stainless steel pipe; 7, second ore sieve tube; 8, alumina molecular sieve; 9, fourth stainless steel pipe; 10, second stainless steel plug. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present utility model.
[0017] As Figure 1-2As shown in the figure, according to the present utility model, an air inlet device for protecting the molecular sieve of an oxygen generator is disclosed, which includes a stainless steel flange 1. A first stainless steel pipe 2 and a third stainless steel pipe 6 are installed below the stainless steel flange 1. A first ore sieve pipe 3 is installed below the first stainless steel pipe 2. An alumina molecular sieve 8 is filled between the first ore sieve pipe 3 and the second ore sieve pipe 7. The first ore sieve pipe 3 is connected to a second stainless steel pipe 4 below. The third stainless steel pipe 6 is connected to the second ore sieve pipe 7 below. A first stainless steel plug 5 is installed below the second stainless steel pipe 4. A hole is opened in the center of the first stainless steel plug 5, and a nut is arranged below the opening. A second stainless steel plug 10 is installed at the bottom end of the fourth stainless steel pipe 9. A hole is opened in the center of the second stainless steel plug 10, and a bolt is arranged above the opening. The first stainless steel plug 5 and the second stainless steel plug 10 are connected by a bolt and a nut.
[0018] In one embodiment of the present utility model, the outer diameter of the second stainless steel pipe (4) is greater than that of the fourth stainless steel pipe (9), the outer diameter of the first stainless steel pipe (2) is greater than that of the third stainless steel pipe (6), and the outer diameter of the first ore sieve pipe (3) is greater than that of the second ore sieve pipe (7). The first stainless steel pipe 2 and the third stainless steel pipe 6, and the second stainless steel pipe 4 and the fourth stainless steel pipe 9 are all filled with alumina molecular sieve 8 inside. The first ore sieve pipe 3 and the second ore sieve pipe 7 and the gaps therein are filled with alumina molecular sieve 8.
[0019] During actual installation, the stainless steel flange is welded to two stainless steel pipes with different outer diameters respectively. The two stainless steel pipes with different outer diameters are welded to two ore sieve pipes with different outer diameters respectively. A hole is opened in the small plug and a bolt is welded. The small plug is welded to the stainless steel pipe with a smaller outer diameter. A hole is opened in the center of the second stainless steel plug. The alumina molecular sieve is filled into the gap between the two ore sieve pipes. After filling, it is covered with the second stainless steel plug and tightened with a nut.
[0020] The air inlet device of the adsorption tower of the pressure swing adsorption oxygen generator uses an ore sieve pipe as the air inlet device. To protect the oxygen-making molecular sieve and prevent the air flow from directly acting on the oxygen-making molecular sieve, the ore sieve pipe is made into a double-layer ore sieve pipe structure, and alumina molecular sieve is filled in the middle. In this way, the air flow first directly acts on the alumina molecular sieve and then enters the oxygen-making molecular sieve. The alumina molecular sieve has good resistance to air flow impact, and also has certain water absorption and the ability to desorb water. It not only prevents the air flow from directly acting on the oxygen-making molecular sieve and protects the oxygen-making molecular sieve, but also further purifies the compressed air entering the adsorption tower of the oxygen generator, thereby protecting the oxygen-making molecular sieve, preventing the performance of the oxygen-making molecular sieve from decreasing and causing the oxygen-making purity to drop, and also extending the service life of the oxygen-making molecular sieve to a certain extent.
[0021] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. An air inlet device for protecting the molecular sieve of an oxygen generator, characterized in that: It includes a stainless-steel flange (1). Below the stainless-steel flange (1), a first stainless-steel pipe (2) and a third stainless-steel pipe (6) are installed. A first ore sieve pipe (3) is installed between the first stainless-steel pipe (2) and the second stainless-steel pipe (4). Alumina molecular sieve (8) is filled between the first ore sieve pipe (3) and the second ore sieve pipe (7). The first stainless-steel pipe (2) is connected to the first ore sieve pipe (3) below. The third stainless-steel pipe (6) is connected to the second ore sieve pipe (7) below. A first stainless-steel plug (5) is installed below the second stainless-steel pipe (4). The center of the first stainless-steel plug (5) is perforated, and a nut is provided below the perforation. The bottom end of a fourth stainless-steel pipe (9) is installed with a second stainless-steel plug (10). The center of the second stainless-steel plug (10) is perforated, and a bolt is provided above the perforation. The first stainless-steel plug (5) and the second stainless-steel plug (10) are connected by a bolt and a nut; Alumina molecular sieve (8) is filled in the first ore sieve pipe (3), the second ore sieve pipe (7) and the gaps between them.
2. The air inlet device for protecting the molecular sieve of an oxygen generator according to claim 1, wherein: The outer diameter of the second stainless-steel pipe (4) is greater than that of the fourth stainless-steel pipe (9). The outer diameter of the first stainless-steel pipe (2) is greater than that of the third stainless-steel pipe (6). The outer diameter of the first ore sieve pipe (3) is greater than that of the second ore sieve pipe (7).
3. The intake device for protecting the molecular sieve of an oxygen generator according to claim 1, characterized in that: Alumina molecular sieve (8) is filled inside the first stainless-steel pipe (2) and the third stainless-steel pipe (6), and inside the second stainless-steel pipe (4) and the fourth stainless-steel pipe (9).