An oxygen removal machine based on pressure swing adsorption technology
By applying pressure swing adsorption technology and lithium-based zeolite molecular sieves, the oxygen removal machine has achieved efficient and economical operation, solving the problems of increased costs and difficulty in detecting the effects of chemical reactions, and improving the controllability of the equipment operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YANTAI CHENGDAQI TECHNOLOGY CO LTD
- Filing Date
- 2025-06-23
- Publication Date
- 2026-06-26
AI Technical Summary
Existing oxygen removal machines require the use of chemical solutions for reaction, which increases production costs and makes it difficult to detect the oxygen removal effect, thus affecting the equipment's performance.
The system employs pressure swing adsorption (PSA) technology, where air is filtered by an air supply mechanism and then adsorbed by a separation mechanism. Lithium-based zeolite molecular sieves are used for oxygen adsorption, a detection mechanism measures the oxygen content, and a vacuum mechanism reduces the air pressure to desorb the adsorption, thus achieving efficient oxygen removal.
It eliminates the need for chemical solutions, reduces production costs, and enables real-time monitoring of oxygen removal, thus improving the equipment's efficiency and reliability.
Smart Images
Figure CN224404772U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of oxygen removal machines, and in particular to an oxygen removal machine based on pressure swing adsorption technology. Background Technology
[0002] An oxygen removal machine is a device specifically designed to remove oxygen from an oxygen-rich environment. It can effectively reduce the oxygen content and provide a cleaner, safer air environment. The use of a high-efficiency oxygen removal machine has advantages such as high efficiency, safety, stability, and ease of operation.
[0003] Existing oxygen removal machines, such as the high-efficiency oxygen removal machine disclosed in utility model patent application number 202323169211.1, mainly include a housing with an internal chamber. An oxygen removal assembly is mounted on the housing, comprising a reaction cylinder fixedly installed on the bottom wall of the internal chamber. An air inlet pipe is fixedly installed on the reaction cylinder, and a vertical pipe is fixedly installed at the end of the air inlet pipe. A distribution plate is fixedly installed at the bottom end of the vertical pipe. In use, an appropriate amount of chemical solution is added to the reaction cylinder through the addition pipe. After the solution is added, the threaded cap is tightened. Then, the air inlet pipe is connected to an external pipe equipped with a fan, allowing the external fan to deliver air to the air inlet pipe. As the air enters through the air inlet pipe, it is ejected from the gas nozzle and reacts with the chemical solution in the reaction cylinder, thus removing oxygen from the air.
[0004] However, most existing oxygen removal machines require the use of chemical solutions for reaction, which increases production costs and makes it difficult to detect the oxygen removal effect, resulting in difficulty in timely detection of equipment failures and affecting work efficiency. Utility Model Content
[0005] To solve the above-mentioned technical problems, this utility model provides an oxygen removal machine based on pressure swing adsorption technology that not only eliminates the need for chemical solutions and removes oxygen by adsorbing it using pressure swing adsorption technology, thus saving production costs, but also allows for the detection of oxygen removal efficiency, facilitating the monitoring of equipment operation.
[0006] This utility model discloses an oxygen removal machine based on pressure swing adsorption (PSA) technology, comprising an air supply mechanism; it also includes two sets of separation mechanisms, a detection mechanism, and a vacuum mechanism. Both sets of separation mechanisms are installed on the air supply mechanism to adsorb oxygen, the detection mechanism is installed on the separation mechanisms to detect the oxygen content, and the vacuum mechanism is installed on the separation mechanisms to discharge oxygen. The air supply mechanism filters air and delivers it to the first set of separation mechanisms, where the pressure is increased to adsorb oxygen. Other gases enter the detection mechanism for oxygen content detection, facilitating monitoring of equipment operation. When oxygen accumulates in the first set of separation mechanisms, the air supply mechanism delivers air to the second set of separation mechanisms, and the vacuum mechanism is activated to lower the pressure in the first set of separation mechanisms, releasing the adsorbed oxygen.
[0007] Preferably, the air supply mechanism includes a housing, an extraction pipe, a Roots blower, a connecting pipe, a filter box, and a main air supply pipe. The housing is mounted on the working surface and has an internal cavity. The extraction pipe is installed inside the cavity of the housing, and the Roots blower is installed inside the cavity of the housing. The inlet of the Roots blower is connected to the inside of the extraction pipe, and the connecting pipe is connected to the inside of the exhaust port at the end of the Roots blower. The filter box is installed inside the cavity of the housing and is connected to the inside of the connecting pipe. The main air supply pipe is connected to the inside of the filter box. When the Roots blower is started, it draws in outside air through the extraction pipe. The Roots blower compresses and pressurizes the air and then delivers it to the filter box through the connecting pipe. The filter box filters the air, and the compressed air is delivered to the two sets of separation mechanisms through the main air supply pipe.
[0008] Preferably, the filter box also contains activated carbon; activated carbon can not only adsorb dust in the air, but also adsorb moisture in the air, improve the purity of the air, and facilitate the removal of oxygen by the subsequent separation mechanism.
[0009] Preferably, the separation mechanism includes a separation tank, an air supply branch pipe, a first solenoid valve, a pressure gauge, and a molecular sieve. The separation tank is installed in the cavity of the housing, and the separation tank has an internal cavity. The air supply branch pipe is connected and installed between the separation tank and the main air supply pipe. The first solenoid valve is installed on the air supply branch pipe, the pressure gauge is installed on the separation tank, and the molecular sieve is installed in the internal cavity of the separation tank. The first set of first solenoid valves is opened and the second set of first solenoid valves is closed. Air in the main air supply pipe is delivered to the first set of separation tanks through the air supply branch pipe. The pressure gauge detects the pressure in the separation tank. The molecular sieve adsorbs oxygen in the air. When oxygen is enriched, the first set of first solenoid valves is closed and the second set of first solenoid valves is opened, so that the two sets of separation mechanisms adsorb oxygen in turn, thereby improving working efficiency.
[0010] Preferably, the molecular sieve is made of lithium-based zeolite. Lithium-based zeolite molecular sieves have high charge density, generate strong electrostatic attraction for highly polar oxygen molecules, and have a weak effect on nitrogen. Under the same pressure, the amount of oxygen adsorbed is more than three times that of nitrogen. Moreover, it has strong low-pressure adsorption capacity, which can reduce the amount of adsorbent used and reduce the size of the equipment.
[0011] Preferably, the detection mechanism includes two sets of exhaust branch pipes, two sets of second solenoid valves, an exhaust main pipe, a buffer tank, an electrochemical sensor, and a first exhaust pipe. The top ends of the two sets of exhaust branch pipes are respectively connected to the bottom ends of the two sets of molecular sieves. The two sets of second solenoid valves are respectively installed on the two sets of exhaust branch pipes. The exhaust main pipe is connected between the two sets of exhaust branch pipes. The buffer tank is installed in the cavity of the housing, and the exhaust main pipe is connected to the interior of the buffer tank. The electrochemical sensor is installed on the buffer tank, and the first exhaust pipe is installed on the electrochemical sensor. During the enrichment of oxygen on the molecular sieve, the corresponding second solenoid valve is opened, and other gases not adsorbed by the molecular sieve enter the buffer tank through the exhaust branch pipe and the exhaust main pipe for buffering and pressure reduction. The electrochemical sensor detects the remaining oxygen content in the air to facilitate the judgment of the enrichment effect of the molecular sieve. Finally, other gases are discharged through the first exhaust pipe.
[0012] Preferably, the vacuum mechanism includes two sets of oxygen extraction branch pipes, two sets of third solenoid valves, an oxygen extraction main pipe, a vacuum pump, and a second exhaust pipe. The top ends of the two sets of oxygen extraction branch pipes are respectively connected to the bottom ends of the two sets of separation tanks. The two sets of third solenoid valves are respectively installed on the two sets of oxygen extraction branch pipes. The oxygen extraction main pipe is connected and installed between the two sets of oxygen extraction branch pipes. The vacuum pump is installed in the cavity of the housing and is connected to the inside of the oxygen extraction main pipe. The second exhaust pipe is installed on the oxygen extraction main pipe. When oxygen is enriched on the molecular sieve, the third solenoid valve on the corresponding oxygen extraction branch pipe is opened, and the vacuum pump is started at the same time. The vacuum pump extracts the air in the separation tank through the oxygen extraction main pipe and the oxygen extraction branch pipe, causing its pressure to drop. After the pressure drops, the oxygen falls off the molecular sieve, and the vacuum pump discharges the oxygen through the second exhaust pipe.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: the air supply mechanism filters the air and delivers it to the first set of separation mechanisms. The first set of separation mechanisms pressurizes and adsorbs oxygen, while other gases enter the detection mechanism to detect the oxygen content, which facilitates the monitoring of the equipment operation. When the oxygen in the first set of separation mechanisms is enriched, the air supply mechanism delivers the air to the second set of separation mechanisms. The vacuum mechanism is activated to reduce the air pressure in the first set of separation mechanisms, and the oxygen is released after being de-adsorbed. Attached Figure Description
[0014] Figure 1 This is a front view structural diagram of the present invention;
[0015] Figure 2 This is a partially enlarged cross-sectional isometric structural schematic diagram of the air delivery mechanism of this utility model;
[0016] Figure 3 This is a cross-sectional isometric structural diagram of the separation mechanism of this utility model;
[0017] Figure 4 This is a partially enlarged front view schematic diagram of the testing mechanism of this utility model;
[0018] Figure 5 This is a cross-sectional isometric structural diagram of the vacuum mechanism of this utility model.
[0019] The attached diagram is labeled as follows: 01, Gas supply mechanism; 11, Housing; 12, Extraction pipe; 13, Roots blower; 14, Connecting pipe; 15, Filter box; 16, Main gas supply pipe; 02, Separation mechanism; 21, Separation tank; 22, Gas supply branch pipe; 23, First solenoid valve; 24, Pressure gauge; 25, Molecular sieve; 03, Detection mechanism; 31, Exhaust branch pipe; 32, Second solenoid valve; 33, Main exhaust pipe; 34, Buffer tank; 35, Electrochemical sensor; 36, First exhaust pipe; 04, Vacuum mechanism; 41, Oxygen extraction branch pipe; 42, Third solenoid valve; 43, Main oxygen extraction pipe; 44, Vacuum pump; 45, Second exhaust pipe. Detailed Implementation
[0020] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete. Example 1
[0021] This utility model discloses an oxygen removal machine based on pressure swing adsorption (PSA) technology, comprising an air supply mechanism 01; it also includes two sets of separation mechanisms 02, a detection mechanism 03, and a vacuum mechanism 04. The two sets of separation mechanisms 02 are both installed on the air supply mechanism 01 and adsorb oxygen. The detection mechanism 03 is installed on the separation mechanism 02 and detects the oxygen content. The vacuum mechanism 04 is installed on the separation mechanism 02 and discharges oxygen. The air supply mechanism 01 includes a housing 11, an extraction pipe 12, a Roots blower 13, a connecting pipe 14, a filter box 15, and a main air supply pipe 16. The housing 11 is installed on a working surface, and a cavity is provided inside the housing 11. The extraction pipe 12 is installed on the housing 11. Inside the cavity, a Roots blower 13 is installed within the cavity of the housing 11, and the inlet of the Roots blower 13 is connected to the inside of the extraction pipe 12. A connecting pipe 14 is connected to the inside of the exhaust port at the end of the Roots blower 13. A filter box 15 is installed within the cavity of the housing 11 and is connected to the inside of the connecting pipe 14. A main air supply pipe 16 is connected to the inside of the filter box 15. The filter box 15 also contains activated carbon. The separation mechanism 02 includes a separation tank 21, an air supply branch pipe 22, a first solenoid valve 23, a pressure gauge 24, and a molecular sieve 25. The separation tank 21 is installed within the cavity of the housing 11, and an inner cavity is provided inside the separation tank 21. The air supply branch pipe 22 is connected to the air supply branch pipe 22. Between the main pipe 16, the first solenoid valve 23 is installed on the air supply branch pipe 22, the pressure gauge 24 is installed on the separator 21, and the molecular sieve 25 is installed inside the separator 21; the molecular sieve 25 is also made of lithium-based zeolite; during operation, firstly, the Roots blower 13 is started, and the Roots blower 13 draws in outside air through the air extraction pipe 12. The Roots blower 13 compresses and pressurizes the air and then delivers it to the filter box 15 through the connecting pipe 14. The filter box 15 filters the air. The activated carbon can not only adsorb dust in the air, but also adsorb moisture in the air, improving the purity of the air and facilitating the subsequent oxygen removal by the separation mechanism 02. The first set of first solenoid valves 23 is then opened. 3. Close the first solenoid valve 23 of the second group. The air in the main gas supply pipe 16 is delivered to the first separation tank 21 through the gas supply branch pipe 22. The pressure gauge 24 detects the pressure in the separation tank 21. The molecular sieve 25 adsorbs oxygen in the air. The lithium-based zeolite molecular sieve has a high charge density and generates a strong electrostatic attraction for highly polar oxygen molecules, while having a weak effect on nitrogen. Under the same pressure, the amount of oxygen adsorbed is more than three times that of nitrogen. Moreover, it has a strong low-pressure adsorption capacity, which can reduce the amount of adsorbent used and reduce the size of the equipment. When the oxygen is enriched, close the first solenoid valve 23 of the first group and open the first solenoid valve 23 of the second group, so that the two separation mechanisms 02 adsorb oxygen in turn, thereby improving the working efficiency. Example 2
[0022] like Figures 1 to 5As shown, this utility model discloses an oxygen removal machine based on pressure swing adsorption technology, which is based on Example 1. The detection mechanism 03 includes two sets of exhaust branch pipes 31, two sets of second solenoid valves 32, an exhaust main pipe 33, a buffer tank 34, an electrochemical sensor 35, and a first exhaust pipe 36. The top ends of the two sets of exhaust branch pipes 31 are respectively connected to the bottom ends of the two sets of molecular sieves 25. The two sets of second solenoid valves 32 are respectively installed on the two sets of exhaust branch pipes 31. The exhaust main pipe 33 is connected and installed between the two sets of exhaust branch pipes 31. The buffer tank 34 is installed in the cavity of the housing 11, and the exhaust main pipe 33 is connected to the interior of the buffer tank 34. The electrochemical sensor 35 is installed on the buffer tank 34, and the first exhaust pipe 36 is installed on the electrochemical sensor 35. The vacuum mechanism 04 includes... The system includes two sets of oxygen extraction branch pipes 41, two sets of third solenoid valves 42, an oxygen extraction main pipe 43, a vacuum pump 44, and a second exhaust pipe 45. The top ends of the two sets of oxygen extraction branch pipes 41 are respectively connected to the bottom ends of the two sets of separation tanks 21. The two sets of third solenoid valves 42 are respectively installed on the two sets of oxygen extraction branch pipes 41. The oxygen extraction main pipe 43 is connected and installed between the two sets of oxygen extraction branch pipes 41. The vacuum pump 44 is installed in the cavity of the housing 11 and is connected to the inside of the oxygen extraction main pipe 43. The second exhaust pipe 45 is installed on the oxygen extraction main pipe 43. When it is working, firstly, the Roots blower 13 is started. The Roots blower 13 draws in outside air through the extraction pipe 12. The Roots blower 13 compresses and pressurizes the air and then delivers it to the filter box 15 through the connecting pipe 14. The filter box 15 filters the air and activates the carbon. Not only can it adsorb dust from the air, but it can also adsorb moisture from the air, improving air purity and facilitating oxygen removal by the subsequent separation mechanism 02. The first solenoid valve 23 of the first group is opened, and the first solenoid valve 23 of the second group is closed. Air in the main air supply pipe 16 is delivered to the first separation tank 21 through the branch air supply pipe 22. Pressure gauge 24 detects the pressure inside the separation tank 21. Molecular sieve 25 adsorbs oxygen from the air. Lithium-based zeolite molecular sieves have high charge density, generating strong electrostatic attraction for highly polar oxygen molecules, while having a weak effect on nitrogen. Under the same pressure, the oxygen adsorption capacity is more than three times that of nitrogen, and it has strong low-pressure adsorption capacity, which can reduce the amount of adsorbent used and reduce the equipment size. The corresponding second solenoid valve 32 is opened, and other substances not adsorbed by molecular sieve 25 are removed. Gas enters the buffer tank 34 through the exhaust branch pipe 31 and the exhaust main pipe 33 for buffering and pressure reduction. The electrochemical sensor 35 detects the remaining oxygen content in the air to facilitate the assessment of the enrichment effect of the molecular sieve 25. Finally, other gases are discharged through the first exhaust pipe 36. When oxygen is enriched, the first set of first solenoid valves 23 is closed and the second set of first solenoid valves 23 is opened, so that the two sets of separation mechanisms 02 take turns adsorbing oxygen to improve working efficiency. At the same time, the third solenoid valve 42 on the corresponding oxygen extraction branch pipe 41 is opened, and the vacuum pump 44 is started. The vacuum pump 44 extracts the air in the separation tank 21 through the oxygen extraction main pipe 43 and the oxygen extraction branch pipe 41, causing its pressure to drop. After the pressure is reduced, oxygen falls off the molecular sieve 25, and the vacuum pump 44 discharges the oxygen through the second exhaust pipe 45.
[0023] The Roots blower 13 and vacuum pump 44 of this utility model are commercially available. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.
[0024] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. An oxygen removal machine based on pressure swing adsorption technology, comprising an air supply mechanism (01); characterized in that, It also includes two sets of separation mechanisms (02), a detection mechanism (03) and a vacuum mechanism (04). The two sets of separation mechanisms (02) are installed on the gas supply mechanism (01) and adsorb oxygen. The detection mechanism (03) is installed on the separation mechanism (02) and detects the oxygen content. The vacuum mechanism (04) is installed on the separation mechanism (02) and discharges oxygen.
2. An oxygen removal machine based on pressure swing adsorption technology as described in claim 1, characterized in that, The air supply mechanism (01) includes a housing (11), an exhaust pipe (12), a Roots blower (13), a connecting pipe (14), a filter box (15), and an air supply main pipe (16). The housing (11) is installed on the working surface and has a cavity inside. The exhaust pipe (12) is installed in the cavity of the housing (11). The Roots blower (13) is installed in the cavity of the housing (11), and the air inlet of the Roots blower (13) is connected to the inside of the exhaust pipe (12). The connecting pipe (14) is connected to the inside of the exhaust port at the end of the Roots blower (13). The filter box (15) is installed in the cavity of the housing (11) and is connected to the inside of the connecting pipe (14). The air supply main pipe (16) is connected to the inside of the filter box (15).
3. An oxygen removal machine based on pressure swing adsorption technology as described in claim 2, characterized in that, It also includes activated carbon installed inside the filter box (15).
4. An oxygen removal machine based on pressure swing adsorption technology as described in claim 2, characterized in that, The separation mechanism (02) includes a separation tank (21), a gas supply branch pipe (22), a first solenoid valve (23), a pressure gauge (24), and a molecular sieve (25). The separation tank (21) is installed in the cavity of the housing (11). The separation tank (21) has an inner cavity. The gas supply branch pipe (22) is connected between the separation tank (21) and the gas supply main pipe (16). The first solenoid valve (23) is installed on the gas supply branch pipe (22). The pressure gauge (24) is installed on the separation tank (21). The molecular sieve (25) is installed in the inner cavity of the separation tank (21).
5. An oxygen removal machine based on pressure swing adsorption technology as described in claim 4, characterized in that, It also includes molecular sieves (25) made of lithium-based zeolite.
6. An oxygen removal machine based on pressure swing adsorption technology as described in claim 4, characterized in that, The testing mechanism (03) includes two sets of exhaust branch pipes (31), two sets of second solenoid valves (32), an exhaust main pipe (33), a buffer tank (34), an electrochemical sensor (35), and a first exhaust pipe (36). The top ends of the two sets of exhaust branch pipes (31) are respectively connected to the bottom ends of the two sets of molecular sieves (25). The two sets of second solenoid valves (32) are respectively installed on the two sets of exhaust branch pipes (31). The exhaust main pipe (33) is connected and installed between the two sets of exhaust branch pipes (31). The buffer tank (34) is installed in the cavity of the housing (11), and the exhaust main pipe (33) is connected to the interior of the buffer tank (34). The electrochemical sensor (35) is installed on the buffer tank (34), and the first exhaust pipe (36) is installed on the electrochemical sensor (35).
7. An oxygen removal machine based on pressure swing adsorption technology as described in claim 4, characterized in that, The vacuum mechanism (04) includes two sets of oxygen extraction branch pipes (41), two sets of third solenoid valves (42), an oxygen extraction main pipe (43), a vacuum pump (44), and a second exhaust pipe (45). The top ends of the two sets of oxygen extraction branch pipes (41) are respectively connected to the bottom ends of the two sets of separation tanks (21). The two sets of third solenoid valves (42) are respectively installed on the two sets of oxygen extraction branch pipes (41). The oxygen extraction main pipe (43) is connected and installed between the two sets of oxygen extraction branch pipes (41). The vacuum pump (44) is installed in the cavity of the housing (11) and connected to the inside of the oxygen extraction main pipe (43). The second exhaust pipe (45) is installed on the oxygen extraction main pipe (43).