Oxygen pressure-equalizing distribution device of molecular sieve oxygen generator

Abstract

The utility model discloses an oxygen pressure equalizing distribution device of a molecular sieve oxygenerator, which relates to the technical field of molecular sieve oxygenerators, and comprises an air inlet mechanism, the air inlet mechanism comprises an air inlet cover, the inner wall of the air inlet cover is fixedly connected with an inner flow guide cover, the inner flow guide cover is trumpet-shaped, the inner wall of the inner flow guide cover is fixedly connected with a low-pressure cone, and the low-pressure cone is fixedly connected with the air inlet cover. The position, close to the bottom end, of the inner wall of the inner flow guide cover is fixedly connected with a flow dividing skirt, the low-pressure cone is sleeved with the flow dividing skirt, and the position, close to the bottom end, of the inner wall of the air inlet cover is fixedly sleeved with a hole plate. By means of the coanda effect, airflow evenly diffuses all around after passing through the surfaces of the inner flow guide cover and the flow dividing skirt, part of the airflow flows along the outer wall of the low-pressure cone through the low-pressure cone, flow is guided to the middle position to a certain degree, a low-pressure area is avoided, and the service life of the low-pressure cone is prolonged. Therefore, the air can be in full contact with the molecular sieve.

Description

Technical Field

[0001] This utility model relates to the field of molecular sieve oxygen generator technology, specifically to an oxygen pressure equalization and distribution device for a molecular sieve oxygen generator. Background Technology

[0002] Molecular sieve oxygen generators use air as raw material and molecular sieves as adsorbents to purify oxygen using the pressure swing adsorption principle. Specifically, they utilize the selective adsorption of oxygen and nitrogen by molecular sieves to separate oxygen and nitrogen and extract high-purity oxygen.

[0003] An existing patent (publication number: CN221514019U) discloses an oxygen pressure equalization and distribution device for a molecular sieve oxygen generator, including an adsorption tower. The bottom of the adsorption tower is provided with a bottom cover, the top of the adsorption tower is provided with a top cover, and the bottom of the top cover is provided with an air inlet mechanism. A pressure consolidation mechanism is provided inside the adsorption tower, and a molecular sieve is provided between the pressure consolidation mechanism and the adsorption tower. By providing an air inlet mechanism, during use, due to the Coanda effect, some air diffuses outward, improving the uniformity of gas distribution and ensuring that the molecular sieves at the same level are in contact with the same amount of air, thereby ensuring the effectiveness of the molecular sieve. At the same time, it avoids the situation where the molecular sieves at the same level have different degrees of aging, which leads to a decrease in oxygen purity, thus ensuring the overall service life of the molecular sieve.

[0004] However, the above technical solution still has certain defects. In the above technical solution, through the Coanda effect, the airflow changes from vertical downward to diffuse in all directions during the process of airflow passing through the first, second, and third horn tubes, thus making the air distribution more uniform. However, during the above process, when the airflow passes through the inside of the third horn tube, according to the Coanda effect, the airflow diffuses in all directions along the inner surface of the third horn tube, which will reduce the airflow flowing directly below the center of the bottom of the third horn. A low-pressure area will appear directly below the center of the third horn, resulting in less air contact for the molecular sieve located directly below the third horn. Therefore, an oxygen pressure equalization distribution device for a molecular sieve oxygen generator is proposed. Utility Model Content

[0005] Based on this, the purpose of this utility model is to provide an oxygen pressure equalization and distribution device for a molecular sieve oxygen generator, so as to solve the technical problems mentioned in the background.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an oxygen pressure equalization and distribution device for a molecular sieve oxygen generator, comprising an air intake mechanism, wherein the air intake mechanism includes an air intake hood, an inner guide hood is fixedly connected to the inner wall of the air intake hood, the inner guide hood is funnel-shaped, a low-pressure cone is fixedly connected to the inner wall of the inner guide hood, a flow divider skirt is fixedly connected to the bottom position of the inner wall of the inner guide hood, the flow divider skirt is fitted around the outside of the low-pressure cone, and a perforated plate is fixedly fitted to the bottom position of the inner wall of the air intake hood.

[0007] As a preferred technical solution of the oxygen pressure equalization and distribution device of the molecular sieve oxygen generator of this utility model, the outer wall of the air inlet hood is provided with a flow control mechanism, the flow control mechanism includes a rotating plate, the rotating plate is attached to the top of the perforated plate, and the top of the rotating plate is provided with multiple sets of ventilation holes.

[0008] As a preferred technical solution of the oxygen equalization and distribution device for a molecular sieve oxygen generator according to the present invention, the outer wall of the air inlet hood is rotatably fitted with an adjusting ring, the inner wall of the adjusting ring is fixedly connected to the outer wall of the rotating plate, and a set of rubber rings are fixedly connected to the top and bottom ends of the adjusting ring, with the inner wall of the rubber rings fitting against the outer wall of the air inlet hood.

[0009] As a preferred technical solution of the oxygen equalization and distribution device for a molecular sieve oxygen generator according to the present invention, a metal elastic ring is fixedly sleeved on the inner wall of the rubber ring, and a contraction spring is sleeved on the inner wall of the rubber ring near the bottom.

[0010] As a preferred technical solution of the oxygen equalization and distribution device for a molecular sieve oxygen generator according to the present invention, the bottom end of the air inlet hood is threadedly connected to an adsorption tower, the adsorption tower includes a tower body, and a filter chamber is slidably sleeved at the bottom end of the tower body.

[0011] As a preferred technical solution of the oxygen equalization and distribution device for a molecular sieve oxygen generator according to the present invention, a filter plate is fixedly sleeved on the inner wall of the filter chamber, and an air outlet is connected to the side wall of the filter chamber.

[0012] As a preferred technical solution of the oxygen equalization and distribution device for a molecular sieve oxygen generator according to this utility model, two sets of spring plates are fixedly connected to the inner wall of the tower body, and two sets of grooves that match the spring plates are opened on the outer wall of the filter chamber, with the spring plates extending into the grooves.

[0013] In summary, the present invention has the following main advantages:

[0014] 1. This utility model utilizes the Coanda effect to ensure that after the airflow passes through the surfaces of the inner guide shroud and the flow divider skirt, the airflow diffuses evenly in all directions. Furthermore, by using a low-pressure cone, some of the airflow flows along the outer wall of the low-pressure cone, thereby guiding the airflow towards the center to a certain extent, avoiding the formation of a low-pressure zone, and allowing the air to come into more full contact with the molecular sieve.

[0015] 2. This utility model controls the overlap between the opening on the rotating plate and the hole on the perforated plate by rotating the adjusting ring, thereby changing the smoothness of airflow through the perforated plate and the rotating ring, and thus controlling the airflow speed. Moreover, in the above adjustment process, only the adjusting ring needs to be rotated, without much operation, which improves the convenience of use. Attached Figure Description

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

[0017] Figure 2 This is a schematic cross-sectional view of the air intake mechanism of this utility model;

[0018] Figure 3 This is a schematic diagram showing the airflow direction during the process of the air intake mechanism according to this utility model.

[0019] Figure 4 This is an exploded view of the flow control mechanism of this utility model;

[0020] Figure 5 This is a schematic diagram of the cross-sectional structure of the rubber ring of this utility model;

[0021] Figure 6 This is a schematic diagram of the cross-sectional structure of the bottom of the tower body of this utility model.

[0022] In the diagram: 1. Air intake mechanism; 2. Flow control mechanism; 3. Adsorption tower;

[0023] 101. Air intake shroud; 102. Inner fairing; 103. Low-pressure cone; 104. Flow divider skirt; 105. Perforated plate;

[0024] 201. Rotating plate; 202. Adjusting ring; 203. Rubber ring; 204. Metal elastic ring; 205. Contraction spring;

[0025] 301. Tower body; 302. Filter chamber; 303. Air outlet; 304. Filter plate; 305. Spring plate. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0027] The embodiments of this utility model will be described below based on its overall structure.

[0028] An oxygen pressure equalization and distribution device for a molecular sieve oxygen generator, such as Figures 1 to 6 As shown, the system includes an intake mechanism 1, which includes an intake shroud 101. An inner guide shroud 102 is fixedly connected to the inner wall of the intake shroud 101. The inner guide shroud 102 is flared, and a low-pressure cone 103 is fixedly connected to the inner wall of the inner guide shroud 102. A flow divider skirt 104 is fixedly connected to the bottom of the inner wall of the inner guide shroud 102 and fits onto the outside of the low-pressure cone 103. A perforated plate 105 is fixedly fitted onto the bottom of the inner wall of the intake shroud 101. An adsorption tower 3 is threadedly connected to the bottom end of the air intake shroud 101. The adsorption tower 3 includes a tower body 301. A filter chamber 302 is slidably sleeved at the bottom end of the tower body 301. A filter plate 304 is fixedly sleeved on the inner wall of the filter chamber 302. An air outlet 303 is connected to the side wall of the filter chamber 302. Two sets of spring plates 305 are fixedly connected to the inner wall of the tower body 301. Two sets of grooves that match the spring plates 305 are opened on the outer wall of the filter chamber 302. The spring plates 305 extend into the grooves.

[0029] Through the Coanda effect, the airflow diffuses evenly in all directions after passing over the surfaces of the inner guide shroud 102 and the flow divider skirt 104. Furthermore, the low-pressure cone 103 directs some airflow along its outer wall, guiding it towards the center and preventing the formation of low-pressure zones. This allows for more thorough contact between the air and the molecular sieve. After passing through the tower body 301, the airflow enters the filter chamber 302, where it is filtered by the filter plate 304, further improving its purity. The filter chamber 302 is secured by two sets of spring plates 305. When the filter plate 304 needs replacement, simply pull the outlet nozzle 303 to move the filter plate. The filter chamber 302 slides out of the tower body 301, and then the filter plate 304 inside the filter chamber 302 can be replaced. Then, push the filter chamber 302 into the tower body 301 to complete the connection between the filter chamber 302 and the tower body 301. During the process of the filter chamber 302 sliding out or into the tower body 301, the spring plate 305 is compressed and undergoes elastic deformation. When the filter chamber 302 is completely slid out of the tower body 301, or when the groove is aligned with the spring plate 305, the spring plate 305 rebounds and returns to its original state. Therefore, during the sliding process of the filter chamber 302, it is necessary to overcome the elastic force of the spring plate 305 so that the filter chamber 302 will not slide out of the tower body 301 without human pulling.

[0030] Please refer to this carefully. Figure 2 , Figure 3 , Figure 4 and Figure 5 The outer wall of the air intake hood 101 is fitted with a flow control mechanism 2. The flow control mechanism 2 includes a rotating plate 201, which is attached to the top of the perforated plate 105. The top of the rotating plate 201 has multiple sets of ventilation holes. The outer wall of the air intake hood 101 is rotatably fitted with an adjusting ring 202. The inner wall of the adjusting ring 202 is fixedly connected to the outer wall of the rotating plate 201. A set of rubber rings 203 are fixedly connected to the top and bottom of the adjusting ring 202 respectively. The inner wall of the rubber rings 203 is attached to the outer wall of the air intake hood 101. A metal elastic ring 204 is fixedly fitted on the inner wall of the rubber rings 203. A compression spring 205 is fitted on the inner wall of the rubber rings 203 near the bottom.

[0031] By pushing the regulating ring 202 to rotate, the regulating ring 202 drives the rotating plate 201 to rotate, thereby controlling the alignment between the openings on the surface of the rotating plate 201 and the holes on the perforated plate 105, thereby controlling the resistance encountered by the airflow as it passes through the rotating plate 201 and the perforated plate 105, and thus controlling the speed at which the airflow enters the adsorption tower 3.

[0032] In use, through the Coanda effect, the airflow diffuses evenly in all directions after passing through the surfaces of the inner guide shroud 102 and the flow divider skirt 104. Furthermore, the low-pressure cone 103 allows some of the airflow to flow along the outer wall of the low-pressure cone 103, thereby guiding the airflow towards the center to a certain extent and preventing the formation of a low-pressure zone. This allows the air to come into more full contact with the molecular sieve. All parts of the device not mentioned herein are the same as or can be implemented using existing technologies.

[0033] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. An oxygen pressure equalization and distribution device for a molecular sieve oxygen generator, comprising an air intake mechanism (1), characterized in that: The air intake mechanism (1) includes an air intake hood (101), an inner guide hood (102) is fixedly connected to the inner wall of the air intake hood (101), the inner guide hood (102) is horn-shaped, a low-pressure cone (103) is fixedly connected to the inner wall of the inner guide hood (102), a flow divider skirt (104) is fixedly connected to the bottom of the inner wall of the inner guide hood (102), the flow divider skirt (104) is fitted on the outside of the low-pressure cone (103), and a perforated plate (105) is fixedly fitted to the bottom of the inner wall of the air intake hood (101).

2. The oxygen pressure equalization and distribution device for a molecular sieve oxygen generator according to claim 1, characterized in that: The outer wall of the air intake hood (101) is fitted with a flow control mechanism (2), which includes a rotating plate (201). The rotating plate (201) is attached to the top of the perforated plate (105), and multiple sets of ventilation holes are opened at the top of the rotating plate (201).

3. The oxygen pressure equalization and distribution device for a molecular sieve oxygen generator according to claim 2, characterized in that: An adjusting ring (202) is rotatably sleeved on the outer wall of the air intake hood (101). The inner wall of the adjusting ring (202) is fixedly connected to the outer wall of the rotating plate (201). A set of rubber rings (203) are fixedly connected to the top and bottom ends of the adjusting ring (202). The inner wall of the rubber rings (203) is attached to the outer wall of the air intake hood (101).

4. The oxygen pressure equalization and distribution device for a molecular sieve oxygen generator according to claim 3, characterized in that: A metal elastic ring (204) is fixedly sleeved on the inner wall of the rubber ring (203), and a contraction spring (205) is sleeved on the inner wall of the rubber ring (203) near the bottom.

5. The oxygen pressure equalization and distribution device for a molecular sieve oxygen generator according to claim 1, characterized in that: The bottom end of the air intake hood (101) is threadedly connected to an adsorption tower (3), the adsorption tower (3) includes a tower body (301), and a filter chamber (302) is slidably sleeved at the bottom end of the tower body (301).

6. The oxygen pressure equalization and distribution device for a molecular sieve oxygen generator according to claim 5, characterized in that: The filter chamber (302) has a filter plate (304) fixedly fitted on its inner wall, and the filter chamber (302) has an air outlet (303) connected to its side wall.

7. The oxygen pressure equalization and distribution device for a molecular sieve oxygen generator according to claim 5, characterized in that: Two sets of spring plates (305) are fixedly connected to the inner wall of the tower body (301), and two sets of grooves that match the spring plates (305) are opened on the outer wall of the filter chamber (302), with the spring plates (305) extending into the grooves.

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