Adsorption tower and medical pressure swing adsorption oxygen production equipment comprising same

By improving the adsorption tower design and program control system, the problems of high noise, high failure rate and high cost of PSA oxygen generation systems in ICUs have been solved, achieving efficient and stable oxygen supply and meeting the demand for high-concentration oxygen.

CN223586873UActive Publication Date: 2025-11-25HEBEI JINZHIKANG MEDICAL TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202423128153.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-18
Publication Date
2025-11-25
Estimated Expiration
2034-12-18

AI Technical Summary

Technical Problem

Existing PSA oxygen generation systems in intensive care units (ICUs) are noisy, have a high failure rate, are costly, and have low oxygen generation efficiency, failing to meet the demand for high-concentration oxygen.

Method used

An improved adsorption tower design, including an upper and lower splitter, is adopted. Oxygen is evenly delivered through the upper splitter, and the adsorbent is compressed. Combined with a programmable control system and a multi-channel rotary valve, the adsorbent is utilized efficiently.

Benefits of technology

It improves oxygen adsorption efficiency and delivery uniformity, reduces noise, extends equipment life, reduces failure rate and operating costs, and meets the continuous supply demand for high-concentration oxygen.

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Abstract

The utility model discloses an adsorption tower and medical pressure swing adsorption oxygen production equipment comprising the adsorption tower, and belongs to the technical field of pressure swing adsorption oxygen production, the adsorption tower comprises an upper flow divider which is located in an adsorption tower body, is arranged corresponding to a gas outlet of the adsorption tower body and is installed on the adsorption tower body, and a lower flow divider which is located in the adsorption tower body and is arranged corresponding to a gas outlet of the adsorption tower body; a plurality of air passing holes are formed in the upper flow divider; the lower flow divider is positioned in the adsorption tower body and is arranged corresponding to the air inlet of the adsorption tower body; the lower flow divider is a hollow cylinder with an opening in one end, and the opening end of the hollow cylinder is fixedly connected with the adsorption tower body; a plurality of air inlet holes are formed in the hollow cylinder; and an adsorbent is filled between the upper flow divider and the lower flow divider. According to the utility model, air entering from the lower air inlet is fully contacted with an adsorbent in the adsorption tower through the small holes in the lower flow divider, so that the adsorption effect is better; the upper flow divider can evenly send oxygen obtained after adsorption out of the adsorption tower, and the upper flow divider and the lower flow divider further have the effect of compressing the adsorbent.
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Description

TECHNICAL FIELD

[0001] The utility model belongs to pressure swing adsorption oxygen production technical field, especially, relate to an adsorption tower and contain medical pressure swing adsorption oxygen production equipment of the adsorption tower. BACKGROUND

[0002] Pressure swing adsorption oxygen production technology is a gas separation method based on physical adsorption principle. This technology uses a specific adsorbent (such as zeolite molecular sieve) to adsorb nitrogen and other impurities under pressure, which is much greater than that of oxygen, so as to realize the separation and purification of oxygen. In the adsorption process, with the change of pressure, the adsorption capacity of nitrogen on the adsorbent will also change, so as to realize the continuous production of oxygen. Pressure swing adsorption oxygen production technology is widely used in many fields, including medical, chemical, steel, aerospace, etc. In the medical field, high-purity oxygen is of great significance for first aid and treatment. With the increasing demand for oxygen supply in hospitals, the traditional cylinder oxygen supply system is gradually replaced by pressure swing adsorption oxygen production system. PSA oxygen production system can produce oxygen on site in the hospital, providing continuous and stable oxygen supply, reducing the dependence on oxygen cylinders and transportation costs. Modern PSA oxygen production system can produce high-purity medical oxygen, usually between 90% and 95%, which can meet the needs of most medical purposes. For patients who need high-concentration oxygen, hospitals may also have other oxygen concentration equipment.

[0003] At the same time, the following scenarios are also applied:

[0004] Ward oxygen supply: PSA oxygen production system can be directly connected to the ward and treatment room to provide continuous oxygen therapy for hospitalized patients. At the same time, the hospital can quickly increase the oxygen supply through this system when needed.

[0005] Operating room oxygen supply: stable oxygen supply is needed during surgery, and PSA system provides reliable oxygen guarantee for the operating room.

[0006] Intensive care unit (ICU): in the ICU, there are often multiple patients who need high-concentration oxygen, and the continuous oxygen supply function of the PSA device can ensure that patients have sufficient oxygen supply at any time. The amount does not meet the demand, the oxygen production efficiency is low, and the frequent operation of the compressor and the valve will produce a lot of noise, which will also cause the valve and the rotary valve to have a high failure rate, resulting in a high cost of the entire device. INVENTION CONTENTS

[0007] In order to solve the above problems, the utility model adopts the following technical scheme:

[0008] An adsorption tower, comprising:

[0009] An adsorption tower body;

[0010] An upper flow distributor is arranged in the adsorption tower body and is fixedly installed on the adsorption tower body, and a plurality of air passing holes are arranged on the upper flow distributor;

[0011] A lower flow distributor is arranged in the adsorption tower body and is arranged corresponding to the air inlet of the adsorption tower body; the lower flow distributor is a hollow cylinder with one open end, and the open end of the hollow cylinder is fixedly connected with the adsorption tower body; a plurality of air inlets are arranged on the hollow cylinder and are in communication with the hollow cavity; and the upper flow distributor and the lower flow distributor are filled with adsorbents.

[0012] Further, the upper flow distributor comprises a fixed seat and a circular upper flow plate, the upper flow plate is fixedly connected with the fixed seat, and a plurality of air passing holes are arranged on the upper flow plate in an array.

[0013] Further, the diameter of the air passing hole is 3.5mm-5.5mm.

[0014] Further, a plurality of grooves are uniformly arranged on the side of the fixed seat away from the air outlet, a plurality of protrusions are arranged on the inner wall of the adsorption tower body, the plurality of protrusions are arranged corresponding to the plurality of grooves, a plurality of positioning sleeves are arranged on the upper flow plate, a reset spring is arranged in each positioning sleeve, one end of the reset spring is in abutment with the upper flow plate, and the other end is in abutment with the inner wall of the top of the adsorption tower body.

[0015] Further, a cone is arranged on the closed end of the hollow cylinder, and the tip of the cone is located on the side away from the air inlet.

[0016] Further, the diameter of the air inlet is 3.5mm-5.5mm.

[0017] A medical pressure swing adsorption oxygen generating device at least comprises the adsorption tower.

[0018] Beneficial effects:

[0019] The adsorption tower can make the air entering from the lower air inlet pass through the small holes on the lower flow distributor and fully contact with the adsorbents in the adsorption tower, so that the adsorption effect is better; the oxygen obtained after adsorption can be uniformly sent out of the adsorption tower by the upper flow distributor, and the upper flow distributor and the lower flow distributor also have the function of compacting the adsorbents. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a sectional structure schematic view of the adsorption tower;

[0021] Figure 2 It is a structure schematic view of the upper flow distributor;

[0022] Figure 3 is a front view of the upper flow distributor;

[0023] Figure 4 is a bottom view of the upper flow distributor;

[0024] Figure 5 is a structural schematic view of the lower flow distributor;

[0025] Figure 6 is another view of the lower flow distributor;

[0026] Figure 7 is a structural schematic view of the medical pressure swing adsorption oxygen generating device;

[0027] wherein 1, an adsorption tower body; 2, an upper flow distributor; 21, a positioning sleeve; 22, an upper flow distribution plate; 23, a gas passing hole; 24, a groove; 3, a lower flow distributor; 31, a hollow cylinder; 32, an air inlet hole; 33, a cone; 4, an upper air outlet; 5, a lower air inlet; 6, a plug; 7, a supporting leg; 8, a rotary valve; 9, an air buffer tank; 10, an oxygen buffer tank. DETAILED DESCRIPTION

[0028] Example 1

[0029] Reference Figures 1-6 An adsorption tower, comprising:

[0030] an adsorption tower body 1, the lower end of the adsorption tower body 1 is provided with three uniformly arranged supporting legs 7;

[0031] an upper flow distributor 2, the upper flow distributor 2 is located in the adsorption tower body 1, is correspondingly arranged with the air outlet of the adsorption tower body 1, and is installed on the adsorption tower body 1; a plurality of gas passing holes 23 are arranged on the upper flow distributor 2 in an array;

[0032] a lower flow distributor 3, the lower flow distributor 3 is located in the adsorption tower body 1 and is correspondingly arranged with the air inlet of the adsorption tower body 1; the lower flow distributor 3 is a hollow cylinder 31 with an open end, the open end of the hollow cylinder 31 is fixedly connected with the adsorption tower body 1; a plurality of air inlet holes 32 are arranged on the hollow cylinder 31 and communicate with the hollow cavity; wherein the upper flow distributor 2 and the lower flow distributor 3 are filled with an adsorbent.

[0033] In this embodiment, the upper flow distributor 2 comprises a fixed seat and a circular upper flow distribution plate 22, the upper flow distribution plate 22 is fixedly connected with the fixed seat, and a plurality of gas passing holes 23 are arranged on the upper flow distribution plate 22 in an array.

[0034] In this embodiment, the diameter of the gas passing hole 23 is 3.5mm-5.5mm.

[0035] In the embodiment, the fixing seat is uniformly provided with a plurality of grooves 24 on the side away from the air outlet, and the inner wall of the adsorption tower body 1 is provided with a plurality of protrusions, which are correspondingly and matchingly arranged with the plurality of grooves 24; the upper flow divider 22 is provided with a plurality of positioning sleeves 21, and each positioning sleeve 21 is provided with a reset spring, one end of the reset spring is in abutment with the upper flow divider 22, and the other end is in abutment with the top inner wall of the adsorption tower body 1; when the gas flows upward, the upper flow divider 22 and the fixing seat can be driven to slide, and due to the existence of the reset spring, the upper flow divider 2 returns to the matching state with the protrusions, so that the upper flow divider 2 is installed on the inner wall of the adsorption tower body 1 in a floating manner.

[0036] In the embodiment, the closed end of the hollow cylinder 31 is provided with a cone 33, and the tip of the cone 33 is located away from the air inlet.

[0037] In the embodiment, the diameter of the air inlet hole 32 is 3.5mm-5.5mm.

[0038] Specifically, the adsorption tower body 1 is provided with an upper flow divider 2 and a lower flow divider 3, the fixing seat of the upper flow divider 2 is provided with a circular hole plate (upper flow divider 22), and the gas passing hole 23 with a diameter of 3.5-5.5mm is arranged in an array on the upper flow divider 22; the fixing seat of the upper flow divider 2 is provided with a groove 24 at the lower part, and the upper flow divider 2 is installed below the upper air outlet 4 of the adsorption tower body.

[0039] The upper part of the lower flow divider 3 is a cone 33, the lower part is a hollow cylinder 31, and the side surface is uniformly arranged with a hole (air inlet hole 32) with a diameter of 3.5-5.5mm in an array, and the lower flow divider 3 is arranged above the lower air inlet 5 of the adsorption tower body 1. Through the above arrangement, the air entering from the lower air inlet 5 can first enter the hollow cavity of the lower flow divider 3, then enter the adsorption tower body 1 through the air inlet hole 32 on the lower flow divider, so that the air can fully contact with the adsorbent in the adsorption tower, and the adsorption effect is better; the upper flow divider 2 is used to uniformly send the obtained oxygen out of the adsorption tower, and the upper flow divider 2 and the lower flow divider 3 also play a role of compacting the adsorbent.

[0040] Embodiment 2

[0041] Reference Figure 7 A medical pressure swing adsorption oxygen generating equipment, comprising four adsorption towers provided in embodiment 1.

[0042] The medical pressure swing adsorption oxygen production equipment provided by the embodiment further comprises a pry block and a rotary valve 8, the rotary valve 8 is composed of a top valve and a bottom valve, the bottom valve is oppositely provided with a bottom valve dynamic valve plate and a bottom valve static valve plate, the top valve is oppositely provided with a top valve dynamic valve plate and a top valve static valve plate, a cylinder drives a ratchet wheel to rotate the rotary valve, an air buffer tank 9 is located at the rear of the rotary valve and is close to the rotary valve, an oxygen buffer tank 10 is located at the rear of the rotary valve and is far from the rotary valve, four adsorption towers are arranged beside the rotary valve, and the four adsorption towers are respectively set as an adsorption tower A, an adsorption tower B, an adsorption tower C and an adsorption tower D, and pipelines connected between various devices are communication pipelines.

[0043] Specifically, the medical pressure swing adsorption oxygen production equipment provided by the embodiment further comprises a program control system, the program control system is controlled by a PLC (programmable logic controller), the control system automatically controls pneumatic valves according to input programs, gas entering the pneumatic valves after the pneumatic valves are opened drives a cylinder to operate and thus drives a ratchet wheel, the control system controls an adsorption time of 22s, a desorption time of 22s and an equalization time of 3s.

[0044] Under the distribution of the multi-channel rotary bottom valve, raw air enters the adsorption tower A to be adsorbed and separated, product oxygen is discharged from the upper end of the adsorption tower A, and under the distribution of the multi-channel rotary top valve, the exhaust ends of the adsorption tower B and the adsorption tower C are connected to perform an equalization process; under the distribution of the multi-channel rotary bottom valve, the gas inlet ends of the adsorption tower D are connected to the desorption silencer to perform a pressure reduction and desorption process. Part of the product oxygen discharged from the upper end of the adsorption tower A is used for back flushing and cleaning of the adsorption tower D, and most of the product oxygen is discharged through a throttle valve and a check valve and then discharged after the rotary valve.

[0045] With the rotation of the multi-channel rotary bottom valve and the top valve, the adsorption tower A sequentially performs an equalization process, a pressure reduction process and a back flushing process, the adsorption tower B sequentially performs a pressure reduction process and a back flushing process, an equalization process and an adsorption process, the adsorption tower C sequentially performs an adsorption process, an equalization process, a pressure reduction process and a back flushing process, and the adsorption tower D sequentially performs an equalization process, an adsorption process, a pressure reduction process and a back flushing process, so that the four adsorption tower groups experience a pressure swing adsorption cycle to realize air separation and oxygen production.

[0046] The above is only a preferred embodiment of the present application, and does not limit the technical scope of the present application, so any slight modification, equivalent change and modification made according to the technical essence of the present application still belong to the scope of the technical solution of the present application.

Claims

1. An adsorption column, characterized by, The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower.

2. The adsorption column according to claim 1, characterized in that The application relates to an adsorption tower.

3. The adsorption column of claim 2, wherein, The application relates to an adsorption tower.

4. The adsorption column of claim 2, wherein, The application relates to an adsorption tower.

5. The adsorption column of claim 1, wherein, The application relates to an adsorption tower.

6. The adsorption column of claim 1, wherein, The application relates to an adsorption tower.

7. A medical pressure swing adsorption oxygen generating apparatus, characterized by comprising: The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application relates to an adsorption tower. The application