Inlet air flow uniform distribution device of adsorption tower for molecular sieve oxygen generation and oxygen generation adsorption tower

Abstract

The oxygen production adsorption tower comprises a flow guide section and an air flow uniform distribution section, the flow guide section is provided with a flow guide cavity, the air flow uniform distribution section comprises a flow guide uniform distribution body and a flow disturbing body, the flow guide uniform distribution body is provided with two openings to form the flow guide uniform distribution cavity, and the flow disturbing body is arranged in the flow guide uniform distribution cavity. Two opening ends of the flow guide body are fixedly connected with the flow guide section and the flow disturbing body respectively to form a structure that the flow guide cavity is communicated with the flow guide uniform distribution cavity, and a plurality of flow disturbing holes are formed in the flow disturbing body and are communicated with the flow guide uniform distribution cavity. The flow guide uniform distribution body plays a role in flow guide and also plays a role in dispersing and uniformly distributing airflow, the turbulent flow bodies and the turbulent flow holes can realize dispersion and uniform distribution of the airflow, and the situation that pulverization of the molecular sieve is accelerated due to the fact that the airflow directionally and directly impacts the molecular sieve at the bottom of the adsorption tower can be avoided; meanwhile, the turbulent flow bodies and the turbulent flow holes can reduce the gas flow speed, and the phenomenon that the oxygen concentration is reduced due to the fact that high-speed impact penetrates through a bed layer is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of oxygen production adsorption, in particular to an air inlet air flow uniform distribution device for an adsorption tower for molecular sieve oxygen production and an oxygen production adsorption tower. Background Art

[0002] Molecular sieve oxygen production equipment is widely used in the market and has become the main source of oxygen in hospitals and other places. The oxygen production efficiency of molecular sieve oxygen production equipment is an important indicator for evaluating the performance of the equipment.

[0003] The key to improving the oxygen production efficiency of molecular sieve oxygen generators is that the incoming air can be adsorbed and separated by the molecular sieve as much as possible. In traditional oxygen generators, air enters the adsorption tower through the bottom air inlet pipe. The airflow is not treated, and the incoming high-speed airflow will directly impact the molecular sieve at the bottom of the adsorption tower, which will accelerate the pulverization of the molecular sieve. In addition, for the entire adsorption tower, the flow velocity at the airflow impact part is high, which is easy to penetrate the bed layer, causing a decrease in oxygen concentration.

[0004] In view of this, this patent application is filed. Utility Model Content

[0005] The utility model aims to provide an air flow distribution device for an adsorption tower for molecular sieve oxygen production and an oxygen production adsorption tower, so as to solve the above-mentioned problems that the air flow in the existing adsorption tower directly impacts the adsorption tower, causing the analysis sieve to pulverize quickly, and the air flow quickly impacts and penetrates the bed layer, causing the oxygen concentration to decrease.

[0006] The utility model is realized by the following technical solutions:

[0007] The first object of the utility model is to provide an air flow distribution device for an adsorption tower for molecular sieve oxygen production, comprising a guide section and an air flow distribution section, wherein the guide section has a guide cavity, the air flow distribution section comprises a guide body and a disruptor body, the guide body has two openings to form a guide cavity, the two open ends of the guide body are respectively fixedly connected to the guide section and the disruptor body to form a structure in which the guide cavity is connected to the guide cavity, a plurality of disruptor holes are opened on the disruptor body, and the disruptor holes are connected to the guide cavity.

[0008] In some optional embodiments, the apertures of the two openings of the flow-guiding uniform distribution body are different, and the aperture of the opening close to the flow-guiding section is smaller than the aperture of the opening close to the disrupting body.

[0009] In some optional embodiments, the disruptor body is a plate structure.

[0010] In some optional embodiments, the spoiler body is an arc-shaped plate body, and the arc-shaped spoiler plate protrudes toward the middle of the flow guide section.

[0011] In some optional embodiments, the aperture of the spoiler holes near the edge of the spoiler is larger than the aperture of the spoiler holes near the center of the spoiler.

[0012] In some optional embodiments, the spoiler holes include a first spoiler hole, a second spoiler hole, and a third spoiler hole. A plurality of first spoiler holes are located at the edge of the spoiler plate to form a first spoiler ring area. A plurality of third spoiler holes are located at the center of the spoiler plate. A plurality of second spoiler holes are located between the first spoiler holes and the third spoiler holes to form a second spoiler ring area.

[0013] In some optional embodiments, the apertures of the first spoiler hole, the second spoiler hole, and the third spoiler hole decrease in sequence.

[0014] In some optional embodiments, the flow guide uniform distribution body includes a first flow guide cover, a second flow guide cover, and a third flow guide cover. The two open ends of each flow guide cover are one large and one small. The second flow guide cover is located inside the first flow guide cover, and the third flow guide cover is located inside the second flow guide cover. One end of each of the flow guide covers is fixedly connected to the spoiler, and the end of the first flow guide cover is fixedly connected to the flow guide section. The first spoiler hole is connected to the cavity formed between the first flow guide cover and the second flow guide cover, the second spoiler hole is connected to the cavity formed between the second flow guide cover and the third flow guide cover, and the third spoiler hole is connected to the cavity of the third flow guide cover.

[0015] In some optional embodiments, two support rods are fixedly provided at the end of the guide section, both sides of the third air guide cover are fixedly connected to the support rods, both sides of the support rods are fixedly provided with support half rings, an open end of the third air guide cover away from the spoiler is between the two support half rings, and the end of the second air guide cover is fixedly connected to the support half rings.

[0016] The second object of the utility model is to provide an adsorption tower for molecular sieve oxygen production, comprising an air intake air flow uniform distribution device for the adsorption tower for molecular sieve oxygen production as described in any of the above items, and the air intake pipe of the adsorption tower is fixedly connected to the guide section of the uniform distribution device.

[0017] The advantages and beneficial effects of the utility model compared to the prior art are:

[0018] The utility model provides a molecular sieve oxygen production adsorption tower intake air flow uniform distribution device, the flow guide uniform distribution body provided plays the role of both guiding and dispersing the airflow, and the setting of the turbulent body and the turbulent hole can also play the role of dispersing and distributing the airflow, so that the flow guide uniform distribution body and the turbulent hole can prevent the directional airflow from directly impacting the molecular sieve at the bottom of the adsorption tower, thereby accelerating the pulverization of the molecular sieve. At the same time, the setting of the turbulent body and the turbulent hole can also reduce the gas flow rate, avoid the high-speed impact from penetrating the bed layer, and cause the phenomenon of a decrease in oxygen concentration. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present utility model, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work. In the drawings:

[0020] Figure 1 A schematic diagram of the structure of an air flow distribution device for an adsorption tower for molecular sieve oxygen production provided in one embodiment of the utility model;

[0021] Figure 2 A cross-sectional view of an air flow distribution device for an adsorption tower for molecular sieve oxygen production provided by one embodiment of the utility model;

[0022] Figure 3 for Figure 2 A magnified view of the local structure at point A in the middle;

[0023] Figure 4 A top view of an air flow distribution device for an adsorption tower for molecular sieve oxygen production provided in one embodiment of the utility model;

[0024] Figure 5 A schematic structural diagram of the cooperation between a support rod and a support half ring in an air flow distribution device for an adsorption tower for molecular sieve oxygen production provided in one embodiment of the utility model.

[0025] Marks and corresponding parts names in the attached drawings:

[0026] 1-flow guide section, 2-flow guide uniform distribution body, 201-first flow guide cover, 202-second flow guide cover, 203-third flow guide cover, 3-spoiler body, 4-spoiler hole, 401-first spoiler hole, 402-second spoiler hole, 403-third spoiler hole, 5-support rod, 6-support semi-ring, 7-intake pipe. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation manner of the utility model and its description are only used to explain the utility model and are not intended to limit the utility model.

[0028] In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present invention. However, it is apparent to those skilled in the art that these specific details are not necessary to implement the present invention. In other embodiments, in order to avoid confusing the present invention, well-known structures, circuits, materials or methods are not specifically described.

[0029] Throughout the specification, references to "one embodiment," "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment of the present invention. Therefore, the phrases "one embodiment," "an embodiment," "an example," or "an example" appearing in various places throughout the specification do not necessarily all refer to the same embodiment or example. In addition, particular features, structures, or characteristics may be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. In addition, it will be appreciated by those of ordinary skill in the art that the figures provided herein are for illustrative purposes and that the figures are not necessarily drawn to scale. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] In the description of the present invention, the terms "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the scope of protection of the present invention.

[0031] like Figures 1 to 5 As shown in, an air flow distribution device for an adsorption tower for molecular sieve oxygen production includes a guide section 1 and an air flow distribution section. The guide section 1 can be a guide tube with a guide cavity inside. The guide section 1 is fixedly connected to the air inlet pipe 7 of the adsorption tower. The air flow distribution section includes a guide uniform distribution body 2 and a disturbing body 3. The guide uniform distribution body 2 has two openings to form a guide uniform distribution cavity inside. The two open ends of the guide uniform distribution body 2 are respectively fixedly connected to the guide section 1 and the disturbing body 3 to form a structure in which the guide cavity is connected to the guide uniform distribution cavity. A plurality of disturbing holes 4 arranged at intervals are provided on the disturbing body 3, and the disturbing holes 4 are connected to the guide uniform distribution cavity. Thus, the gas can enter the guide uniform distribution cavity through the guide cavity, and then flow out through the disturbing holes 4 to contact with the molecular sieve.

[0032] In this embodiment, the flow-guiding uniform distribution body 2 is provided to play the role of both guiding and dispersing the airflow, and the setting of the flow-dispersing body 3 and the flow-dispersing hole 4 can also play the role of dispersing and distributing the airflow, so that the flow-guiding uniform distribution body 2 and the flow-dispersing hole 4 can prevent the directional airflow from directly impacting the molecular sieve at the bottom of the adsorption tower, thereby accelerating the pulverization of the molecular sieve. At the same time, the setting of the flow-dispersing body 3 and the flow-dispersing hole 4 can also reduce the gas flow rate, avoid the high-speed impact from penetrating the bed layer, and cause the phenomenon of a decrease in oxygen concentration.

[0033] Furthermore, the apertures of the two openings of the flow-guiding uniform distribution body 2 are not equal, and the aperture of the opening close to the flow-guiding section 1 is smaller than the aperture of the opening close to the disturbing body 3. In this way, the flow-guiding uniform distribution body 2 forms a trumpet-shaped structure, which can evenly distribute the airflow to the periphery, avoiding the waste of the molecular sieve in the peripheral part due to the failure to contact the airflow. This embodiment can improve the adsorption efficiency of the adsorption tower and improve the oxygen production rate of the oxygen production equipment.

[0034] Furthermore, the spoiler body 3 is a plate structure. It is best to set the spoiler body 3 as an arc-shaped plate body, and the arc-shaped spoiler protrudes toward the middle of the flow guide section 1. In this way, the airflow dispersion and uniform distribution effect can be improved, and the flow rate of the airflow in the peripheral and central areas can be balanced to ensure that the airflow is evenly distributed in the surrounding directions. Better, the aperture of the spoiler hole 4 near the edge of the spoiler is set to be larger than the aperture of the spoiler hole 4 near the center of the spoiler. Thus, after the orifice plates with different apertures and numbers are used for spoiler flow, the flow rate of each area is basically equal, and the airflow is ensured to be evenly distributed in the surrounding directions. The uniform distribution effect of the airflow is better.

[0035] Embodiment 2:

[0036] On the basis of Example 1, in this embodiment, the spoiler holes 4 are provided to include the first spoiler holes 401, the second spoiler holes 402, and the third spoiler holes 403, and the plurality of first spoiler holes 401 are located at the edge of the spoiler plate to form the first spoiler ring area, and the plurality of third spoiler holes 403 are located at the center of the spoiler plate, and the plurality of second spoiler holes 402 are located between the first spoiler holes 401 and the third spoiler holes 403 to form the second spoiler ring area, and the apertures of the first spoiler holes 401, the second spoiler holes 402, and the third spoiler holes 403 are successively reduced. In this way, a layer of spoiler ring areas with an aperture gradient are formed, and the spoiler holes 4 in each spoiler ring area are evenly spaced and arrayed, and the number of spoiler holes 4 in each spoiler ring area is not equal. This setting can further optimize the effect of airflow dispersion and uniform distribution, and the airflow is basically realized after the airflow is disturbed by orifices of different apertures and numbers. The flow velocity of each area is equal, ensuring that the airflow is evenly distributed in the four directions, and the uniform distribution effect is better. At the same time, the equal flow rate in each area can make the airflow and molecular sieve in each area more equal, and the oxygen concentration in different areas more uniform. It also further buffers the airflow speed and reduces the pulverization speed of the molecular sieve.

[0037] Furthermore, the flow guide uniform distribution body 2 includes a first flow guide cover 201, a second flow guide cover 202, and a third flow guide cover 203. The two opening ends of each flow guide cover are one large and one small, and the opening aperture near one end of the flow guide section 1 is smaller, forming a trumpet shape. The second flow guide cover 202 is located inside the first flow guide cover 201, and the third flow guide cover 203 is located inside the second flow guide cover 202. One end of each flow guide cover is fixedly connected to the spoiler, and the end of the first flow guide cover 201 away from the spoiler is fixedly connected to the flow guide section 1. The first spoiler hole 401 is connected to the cavity formed between the first flow guide cover 201 and the second flow guide cover 202, the second spoiler hole 402 is connected to the cavity formed between the second flow guide cover 202 and the third flow guide cover 203, and the third spoiler hole 403 is connected to the cavity of the third flow guide cover 203. In this way, the gas can be guided into different cavities and flow out from different turbulent ring areas, which makes it easier to better control the flow direction of the gas, achieve equal flow velocity in each area, and ensure that the airflow is evenly distributed in all directions, with the best distribution effect.

[0038] Preferably, two support rods 5 are fixedly arranged on the inner wall of the air guide tube, with a spacing between the two support rods 5, and the third air guide cover 203 is fixedly connected between the two support rods 5. Support semi-rings 6 are fixedly arranged on both sides of the support rods 5, and the two support semi-rings 6 are outside the third air guide cover 203, and the end of the second air guide cover 202 is fixedly connected to the support semi-rings 6. Thus, the ends of the second air guide cover 202 and the third air guide cover 203 close to the spoiler are fixed, so as to realize the stable connection of each cover body.

[0039] The above specific implementation methods further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above are only specific implementation methods of the utility model and are not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A molecular sieve oxygen production adsorption tower inlet air flow uniform distribution device, characterized in that: The invention comprises a flow guide section (1) and an airflow uniform distribution section, wherein the flow guide section (1) has a flow guide cavity, the airflow uniform distribution section comprises a flow guide uniform distribution body (2) and a flow disturbance body (3), the flow guide uniform distribution body (2) has two openings to form the flow guide uniform distribution cavity, the two open ends of the flow guide uniform distribution body are respectively fixedly connected to the flow guide section (1) and the flow disturbance body (3), forming a structure in which the flow guide cavity is connected to the flow guide uniform distribution cavity, and the flow disturbance body (3) is provided with a plurality of flow disturbance holes (4), and the flow disturbance holes (4) are connected to the flow guide uniform distribution cavity.

2. The device for uniformly distributing air flow in an adsorption tower for producing oxygen using molecular sieve according to claim 1, characterized in that: The apertures of the two openings of the flow-guiding uniform distribution body (2) are different, and the aperture of the opening close to the flow-guiding section (1) is smaller than the aperture of the opening close to the disrupting body (3).

3. The device for uniformly distributing inlet airflow of an adsorption tower for molecular sieve oxygen production according to claim 1, characterized in that: The disrupting body (3) is a plate structure.

4. The device for distributing air flow uniformly in an adsorption tower for producing oxygen using a molecular sieve according to any one of claims 1 to 3, characterized in that: The spoiler body (3) is an arc-shaped plate body, and the arc-shaped spoiler plate protrudes toward the middle of the flow guide section (1).

5. The device for uniformly distributing inlet airflow of an adsorption tower for molecular sieve oxygen production according to claim 4, characterized in that: The diameter of the spoiler hole (4) near the edge of the spoiler plate is larger than the diameter of the spoiler hole (4) near the center of the spoiler plate.

6. The device for uniformly distributing inlet airflow of an adsorption tower for molecular sieve oxygen production according to claim 5, characterized in that: The spoiler holes (4) comprise a first spoiler hole (401), a second spoiler hole (402), and a third spoiler hole (403); a plurality of first spoiler holes (401) are located at the edge of the spoiler plate to form a first spoiler ring area; a plurality of third spoiler holes (403) are located at the center of the spoiler plate; and a plurality of second spoiler holes (402) are located between the first spoiler holes (401) and the third spoiler holes (403) to form a second spoiler ring area.

7. The device for uniformly distributing inlet airflow of an adsorption tower for molecular sieve oxygen production according to claim 6, characterized in that: The apertures of the first spoiler hole (401), the second spoiler hole (402), and the third spoiler hole (403) decrease in sequence.

8. The device for uniformly distributing inlet airflow of an adsorption tower for molecular sieve oxygen production according to claim 7, characterized in that: The flow guide uniform distribution body (2) comprises a first flow guide cover (201), a second flow guide cover (202), and a third flow guide cover (203), wherein the two opening ends of each flow guide cover are one large and one small, the second flow guide cover (202) is located inside the first flow guide cover (201), and the third flow guide cover (203) is located inside the second flow guide cover (202), one end of each of the flow guide covers is fixedly connected to the spoiler, the end of the first flow guide cover (201) is fixedly connected to the flow guide section (1), the first flow spoiler hole (401) is connected to a cavity formed between the first flow guide cover (201) and the second flow guide cover (202), the second flow spoiler hole (402) is connected to a cavity formed between the second flow guide cover (202) and the third flow guide cover (203), and the third flow spoiler hole (403) is connected to the cavity of the third flow guide cover (203).

9. The device for uniformly distributing inlet airflow of an adsorption tower for molecular sieve oxygen production according to claim 8, characterized in that: Two support rods (5) are fixedly provided at the end of the guide section (1), the two sides of the third guide cover (203) are fixedly connected to the support rods (5), and support half rings (6) are fixedly provided on the two sides of the support rods (5), an open end of the third guide cover (203) away from the spoiler is between the two support half rings (6), and the end of the second guide cover (202) is fixedly connected to the support half ring (6).

10. A molecular sieve oxygen production adsorption tower, characterized in that: It comprises the inlet air flow uniform distribution device for the molecular sieve oxygen production adsorption tower as claimed in any one of claims 1 to 9, wherein the air inlet pipe (7) of the adsorption tower is fixedly connected to the guide section (1) of the uniform distribution device.

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