Molecular sieve oxygen generation separation balancing device of oxygen generator
By optimizing the gas flow structure of the molecular sieve adsorption tower and using zeolite molecular sieve for gas separation and filtration, the problem of unbalanced gas flow is solved and the efficiency and oxygen purity of the oxygen concentrator are improved.
Patent Information
- Application Number
- CN202422480558.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-14
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-10-14
AI Technical Summary
In the prior art, the gas flow in the molecular sieve adsorption tower is unbalanced, resulting in low reaction efficiency and reduced oxygen production efficiency.
By setting up components such as an air inlet pipe, an air outlet pipe, an air return pipe, a filter exhaust pipe and a solenoid valve in the molecular sieve adsorption tower, and combining a servo motor to drive the fan and vacuum pump, the gas flow is optimized and zeolite molecular sieve is used for gas separation and filtration.
It improves the gas flow rate and separation efficiency, improves the working efficiency and oxygen purity of the oxygen concentrator, and extends the service life of the molecular sieve.
Smart Images
Figure CN223351361U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of molecular sieve oxygen production separation and balancing, in particular to a molecular sieve oxygen production separation and balancing device for an oxygen generator. Background Art
[0002] Medical oxygen concentrators, a common type of which is a pressure swing adsorption oxygen concentrator, use pressure swing adsorption technology to produce oxygen and can extract oxygen from the air. Molecular sieves are installed in the medical oxygen concentrator. Under pressurized conditions, the physical adsorption and desorption technologies of the molecular sieves are used to adsorb nitrogen from the air, and the unabsorbed oxygen will be collected and purified to obtain oxygen with relatively high purity.
[0003] At present, in the prior art, the working efficiency is accelerated by increasing the friction between the gas and the filter dust-collecting material in the molecular sieve adsorption tower. However, in the above comparative example, the flow of the gas cannot be guided, which will reduce the reaction efficiency of the gas and the adsorption material in the adsorption tower, thereby reducing the nitrogen production efficiency. Therefore, a molecular sieve oxygen production separation and balancing device for an oxygen generator is proposed. Summary of the Invention
[0004] The purpose of the utility model is to provide an oxygen generator molecular sieve oxygen separation and balancing device to solve the existing problems.
[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:
[0006] The utility model is an oxygen generator molecular sieve oxygen separation and balancing device, comprising a molecular sieve adsorption tower, an inner cavity is opened in the molecular sieve adsorption tower, an air inlet pipe is arranged on the side surface of the molecular sieve adsorption tower, a first solenoid valve is installed at one end of the air inlet pipe, an air compressor is arranged at one end of the air inlet pipe, the air inlet pipe is communicated with the inner cavity, an air outlet pipe is arranged on the side surface of the molecular sieve adsorption tower, an oxygen analyzer is installed on the side surface of the air outlet pipe, a return pipe is arranged on one side of the oxygen analyzer, a fourth solenoid valve is installed on the side surface of the return pipe, and one end of the return pipe is connected to the molecular sieve adsorption tower. The side surfaces of the sieve adsorption tower are fixedly connected, the return air pipe is communicated with the inner cavity, a second vacuum pump is provided at one end of the outlet pipe, a third solenoid valve is installed at one end of the outlet pipe, a filter exhaust pipe is provided on the upper surface of the molecular sieve adsorption tower, a first vacuum pump is provided at one end of the filter exhaust pipe, one end of the filter exhaust pipe is communicated with the inner cavity, a second solenoid valve is provided on one side of the first vacuum pump, a servo motor is provided on the bottom surface of the molecular sieve adsorption tower, the output end of the servo motor passes through the bottom surface of the molecular sieve adsorption tower and extends to the interior, and a fan is provided at the output end of the servo motor.
[0007] A molecular sieve shell is arranged in the inner cavity, a zeolite molecular sieve is arranged in the molecular sieve shell, and a plurality of groups of supporting legs are arranged on the bottom surface of the molecular sieve adsorption tower.
[0008] The molecular sieve shell has micropores on its surface, and the pore size thereof is comparable to the size of general molecules. The pore size of the molecular sieve shell can sieve various molecules in the air.
[0009] The zeolite molecular sieve is an inorganic crystalline material, which is widely used in the fields of catalysis, adsorption and ion exchange due to its regular pore structure and high stability.
[0010] The air inlet end of the air compressor is connected to the external air filtering mechanism. At this time, the first vacuum pump and the second solenoid valve are in the closed state. The air compressor compresses the gas from the air filtering mechanism into the inner cavity. At this time, the servo motor is started to drive the fan to rotate, increasing the air flow speed in the inner cavity.
[0011] The utility model has the following beneficial effects:
[0012] When the utility model is used, the device is first placed at a designated position, and then the air inlet end of the air compressor is connected to the external air filtering mechanism. At this time, the first vacuum pump and the second solenoid valve are in a closed state, and the air compressor compresses the gas from the air filtering mechanism into the inner cavity. At this time, the servo motor is started to drive the fan to rotate, thereby increasing the air flow speed in the inner cavity. The gas will naturally float up and pass through the zeolite molecular sieve. The zeolite molecular sieve will separate impurities such as nitrogen in the filtered compressed air from oxygen. The second vacuum pump is started to suck out the oxygen through the air outlet pipe. The concentration of the sucked out oxygen is detected by an oxygen analyzer. Unqualified gas can enter the inner cavity and be re-filtered by opening the fourth solenoid valve and closing the third solenoid valve.
[0013] After a period of use, nitrogen and other impurities accumulate in the zeolite molecular sieve. At this time, the first vacuum pump is started. Since the adsorption capacity of the zeolite molecular sieve is low at low pressure, the zeolite molecular sieve can be effectively desorbed by adjusting the first vacuum pump.
[0014] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0016] Figure 1 This is a schematic diagram of the overall structure of an oxygen generator molecular sieve oxygen separation and balancing device;
[0017] Figure 2This is a schematic diagram of the structure of one side of a molecular sieve oxygen separation and equalization device for an oxygen generator;
[0018] Figure 3 This is a diagram of the internal structure of a molecular sieve oxygen separation and equalization device for an oxygen generator.
[0019] In the accompanying drawings, the list of components represented by each reference number is as follows: 1. Molecular sieve adsorption tower; 11. Inner cavity; 12. Support foot; 13. Filter exhaust pipe; 14. Outlet pipe; 15. Inlet pipe; 2. Air compressor; 3. First solenoid valve; 31. Second solenoid valve; 32. Third solenoid valve; 33. Fourth solenoid valve; 4. First vacuum pump; 5. Oxygen analyzer; 6. Molecular sieve shell; 61. Zeolite molecular sieve; 7. Servo motor; 71. Fan; 8. Second vacuum pump. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0021] In the description of the present invention, it should be understood that the terms "upper", "middle", "outer", "inner" and the like indicating directions or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.
[0022] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc., should be understood in a broad sense. For example, "connected" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a mechanical connection or an electrical connection; it may refer to a direct connection or an indirect connection through an intermediate medium; it may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on the specific circumstances.
[0023] See also Figure 1-Figure 3As shown, the utility model is an oxygen generator molecular sieve oxygen separation and balancing device, including a molecular sieve adsorption tower 1, an inner cavity 11 is opened in the molecular sieve adsorption tower 1, an air inlet pipe 15 is arranged on the side of the molecular sieve adsorption tower 1, a first solenoid valve 3 is installed at one end of the air inlet pipe 15, an air compressor 2 is arranged at one end of the air inlet pipe 15, the air inlet pipe 15 is communicated with the inner cavity 11, an air outlet pipe 14 is arranged on the side of the molecular sieve adsorption tower 1, an oxygen analyzer 5 is installed on the side of the air outlet pipe 14, a return air pipe is arranged on one side of the oxygen analyzer 5, a fourth solenoid valve 33 is installed on the side of the return air pipe, and one end of the return air pipe is connected to the molecular sieve The sides of the adsorption tower 1 are fixedly connected, the return air pipe is communicated with the inner cavity 11, a second vacuum pump 8 is provided at one end of the outlet pipe 14, and a third solenoid valve 32 is installed at one end of the outlet pipe 14. A filter exhaust pipe 13 is provided on the upper surface of the molecular sieve adsorption tower 1, a first vacuum pump 4 is provided at one end of the filter exhaust pipe 13, and one end of the filter exhaust pipe 13 is communicated with the inner cavity 11. A second solenoid valve 31 is provided on one side of the first vacuum pump 4, and a servo motor 7 is provided on the bottom surface of the molecular sieve adsorption tower 1. The output end of the servo motor 7 passes through the bottom surface of the molecular sieve adsorption tower 1 and extends to the interior, and a fan 71 is provided at the output end of the servo motor 7.
[0024] Furthermore, a molecular sieve shell 6 is provided in the inner cavity 11 , a zeolite molecular sieve 61 is provided in the molecular sieve shell 6 , and a plurality of supporting legs 12 are provided on the bottom surface of the molecular sieve adsorption tower 1 .
[0025] Furthermore, the surface of the molecular sieve shell 6 has micropores whose pore size is comparable to the size of general molecules. The pore size of the molecular sieve shell 6 can sieve various molecules in the air.
[0026] Furthermore, the zeolite molecular sieve 61 is an inorganic crystal material of this embodiment, which is widely used in the fields of catalysis, adsorption, and ion exchange due to its regular pore structure and high stability.
[0027] Furthermore, the adsorption of zeolite molecular sieve 61 is a physical change process. The main reason for adsorption is a "surface force" generated by the molecular attraction acting on the solid surface. When the gas passes through, some molecules in the gas collide with the adsorbent surface due to irregular movement, and the number of molecules is reduced, achieving the purpose of separation and removal. Since adsorption does not cause chemical changes, as long as the molecules concentrated on the surface are driven away, the zeolite molecular sieve 61 will have adsorption capacity again. This process is the reverse process of adsorption, called desorption or regeneration.
[0028] It should be noted that when the present invention is used, the device is first placed in a designated position, and then the air inlet end of the air compressor 2 is connected to the external air filtering mechanism. At this time, the first vacuum pump 4 and the second solenoid valve 31 are in a closed state, and the air compressor 2 compresses the gas from the air filtering mechanism into the inner cavity 11. At this time, the servo motor 7 is started to drive the fan 71 to rotate, increasing the air flow rate in the inner cavity 11. The gas will naturally float up and pass through the zeolite molecular sieve 61. The zeolite molecular sieve 61 will separate impurities such as nitrogen in the filtered compressed air from oxygen. The second vacuum pump 8 is started to suck out the oxygen through the outlet pipe 14. The oxygen after being sucked out is tested for its concentration by the oxygen analyzer 5. Unqualified gas can open the fourth solenoid valve 33 and close the third solenoid valve 32 to enter the inner cavity 11 for re-filtration.
[0029] After a period of use, nitrogen and other impurities accumulate in the zeolite molecular sieve 61. At this time, the first vacuum pump 4 is started. Since the adsorption capacity of the zeolite molecular sieve 61 is low at low pressure, the zeolite molecular sieve 61 can be effectively desorbed by adjusting the first vacuum pump 4.
[0030] Throughout this specification, references to terms such as "one embodiment," "example," and "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
[0031] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims
1. An oxygen generator molecular sieve oxygen separation and equalization device, comprising a molecular sieve adsorption tower (1), characterized in that: An inner cavity (11) is provided in the molecular sieve adsorption tower (1), an air inlet pipe (15) is provided on the side surface of the molecular sieve adsorption tower (1), a first electromagnetic valve (3) is installed at one end of the air inlet pipe (15), an air compressor (2) is provided at one end of the air inlet pipe (15), the air inlet pipe (15) is communicated with the inner cavity (11), an air outlet pipe (14) is provided on the side surface of the molecular sieve adsorption tower (1), an oxygen analyzer (5) is installed on the side surface of the air outlet pipe (14), a return air pipe is provided on one side surface of the oxygen analyzer (5), a fourth electromagnetic valve (33) is installed on the side surface of the return air pipe, one end of the return air pipe is fixedly connected to the side surface of the molecular sieve adsorption tower (1), and the return air pipe is connected to the inner cavity. (11), a second vacuum pump (8) is provided at one end of the outlet pipe (14), a third solenoid valve (32) is installed at one end of the outlet pipe (14), a filter exhaust pipe (13) is provided on the upper surface of the molecular sieve adsorption tower (1), a first vacuum pump (4) is provided at one end of the filter exhaust pipe (13), one end of the filter exhaust pipe (13) is communicated with the inner cavity (11), a second solenoid valve (31) is provided on one side of the first vacuum pump (4), a servo motor (7) is provided on the bottom surface of the molecular sieve adsorption tower (1), an output end of the servo motor (7) passes through the bottom surface of the molecular sieve adsorption tower (1) and extends to the interior, and a fan (71) is provided at the output end of the servo motor (7).
2. The molecular sieve oxygen separation and balancing device for an oxygen concentrator according to claim 1, characterized in that: A molecular sieve shell (6) is provided in the inner cavity (11), a zeolite molecular sieve (61) is provided in the molecular sieve shell (6), and a plurality of groups of supporting legs (12) are provided on the bottom surface of the molecular sieve adsorption tower (1).
3. The molecular sieve oxygen separation and equalization device for an oxygen concentrator according to claim 2, characterized in that: The surface of the molecular sieve shell (6) has micropores whose pore diameters are comparable to the size of general molecules. The pore diameters of the molecular sieve shell (6) are capable of screening various molecules in the air.