Low-gas-consumption energy-saving device for adsorption tower of oxygen generator

Abstract

The utility model relates to a low-gas-consumption energy-saving device for an oxygen generator adsorption tower, and belongs to the technical field of oxygen generator production. Comprising a first adsorption tower, a second adsorption tower and a control cabinet which are distributed in a triangular mode, the first adsorption tower, the second adsorption tower and the control cabinet are all installed on the same base, a cabinet door is installed at the position of a front side door opening of the control cabinet, an electric cabinet is detachably installed in the middle of the interior of the control cabinet, and an oxygen outlet control valve set installation cavity is formed in the upper portion of the interior of the control cabinet; an air inlet control valve group mounting cavity is formed in the inner bottom of the control cabinet, an oxygen outlet control valve group is mounted in the oxygen outlet control valve group mounting cavity, and an air inlet control valve group is mounted in the air inlet control valve group mounting cavity. The device has the following beneficial effects that air is taken as a raw material, nitrogen and oxygen in the air are separated by utilizing the selective adsorption performance of a solid adsorbent on nitrogen and oxygen, and the two towers are connected in parallel to alternately perform pressurized adsorption and decompressed regeneration, so that continuous oxygen flow is obtained, and the device has the advantages of low gas consumption and energy conservation.

Description

Technical Field

[0001] This utility model relates to a low-gas-consumption and energy-saving device for an oxygen generator adsorption tower, belonging to the field of oxygen generator production technology. Background Technology

[0002] With the increasing prevalence of oxygen therapy, the growing oxygen consumption in large hospitals, and the inconvenience of oxygen use in high-altitude areas, the solution to these problems is the large-scale molecular sieve oxygen concentrator. The molecular sieve oxygen concentrator is the only mature oxygen concentrator that meets both international and national standards. Medical molecular sieve oxygen concentrators have no special safety requirements, can extract high concentrations of oxygen from the air, reduce the use of liquid oxygen in hospitals, lower oxygen costs, and provide oxygen on demand, operating continuously 24 hours a day.

[0003] Utility model patent number 202221756504.2 discloses an oxygen-enriched combustion aid device for a smelting furnace, comprising an activated carbon adsorber, a first adsorption tower, a second adsorption tower, an oxygen process tank, and a control cabinet. The activated carbon adsorber has an air inlet at the top and an air inlet pipe connected to its lower side. The air inlet pipe is connected to a bottom pipe and a middle pipe, both of which are connected to the first and second adsorption towers. The tops of the first and second adsorption towers are connected to an outlet pipe via flanges. The outlet pipe is connected to the oxygen process tank. The lower side of the oxygen process tank has an outlet pipe. The rear end of the outlet pipe is equipped with a dust filter, a regulating valve, and a flow meter, and has an oxygen outlet at the end.

[0004] The current technology is not comprehensive and has the following drawbacks: the layout of various components is unreasonable, it is not possible to centrally manage various equipment and components in the electrical control system, and operators cannot easily control the operation of the entire system.

[0005] To solve one of the above problems, there is an urgent need for a low-gas-consumption and energy-saving device for oxygen generator adsorption towers. Utility Model Content

[0006] Based on the shortcomings of the existing technology, the technical problem to be solved by this utility model is: how to make reasonable arrangements of various components to achieve centralized management of various equipment and components in the electrical control system, so that operators can not easily control the operation of the entire system. Therefore, this utility model provides a low gas consumption and energy-saving device for oxygen generator adsorption tower, which uses two towers in parallel to alternately perform pressurized adsorption and depressurized regeneration, thereby obtaining a continuous oxygen flow, with the advantages of low gas consumption and energy saving.

[0007] The oxygen generator adsorption tower low-gas-consumption energy-saving device of this utility model includes a first adsorption tower, a second adsorption tower, and a control cabinet arranged in a triangular pattern. The first adsorption tower, the second adsorption tower, and the control cabinet are all installed on the same base. A cabinet door is installed at the front door opening of the control cabinet. The device is characterized in that: an electrical control box is detachably installed in the middle of the control cabinet; the upper inner part of the control cabinet is an oxygen outlet control valve assembly installation cavity; the bottom inner part of the control cabinet is an air inlet control valve assembly installation cavity; an oxygen outlet control valve assembly is installed in the oxygen outlet control valve assembly installation cavity; and an air inlet control valve assembly is installed in the air inlet control valve assembly installation cavity.

[0008] By installing a control cabinet and setting up an electrical control box within it, various devices and components in the electrical control system can be centrally managed. Operators can easily control the operation of the entire system, including functions such as starting, stopping, and adjusting. This centralized control method greatly improves work efficiency and reduces operational complexity.

[0009] Preferably, the intake control valve assembly includes intake valve A, intake valve B, equalizing valve C, equalizing valve D, and a three-way connector A located in the intake control valve assembly mounting cavity. The second and third ports of the three-way connector A are connected to the supply branch pipe A and the supply branch pipe B, respectively. The other end of the supply branch pipe A is connected to the first port of the three-way connector B. The second and third ports of the three-way connector B are connected to the intake pipe and the lower connecting pipe of the first adsorption tower, respectively. The other end of the supply branch pipe B is connected to the first port of the three-way connector C. The second and third ports of the three-way connector C are connected to the intake pipe and the lower connecting pipe of the second adsorption tower, respectively. Intake valve A and intake valve B are installed on the supply branch pipe A and the supply branch pipe B, respectively. The two ends of the lower connecting pipe are installed with equalizing valve C and equalizing valve D, respectively. The first port of the three-way connector A is connected to the supply tank through the main supply pipe. The main supply pipe is equipped with a supply valve.

[0010] The intake valve A, intake valve B, equalizing valve C, equalizing valve D, and three-way pipe joint A are all centrally installed in the system pipeline within the intake control valve assembly mounting cavity, facilitating the disassembly and assembly of multiple control valves for future maintenance and replacement.

[0011] Preferably, the oxygen outlet control valve assembly includes a four-way connector, control valve E, control valve F, and flow regulating valve located in the gas outlet control valve assembly mounting cavity. The first interface of the four-way connector is connected to a vertical connecting pipe, and the other end of the vertical connecting pipe is connected to the middle of the lower connecting pipe. The second interface of the four-way connector is connected to an oxygen outlet extension pipe A, and the other end of the oxygen outlet extension pipe A is connected to the oxygen outlet main pipe of the first adsorption tower. The third interface of the four-way connector is connected to an oxygen outlet extension pipe B, and the other end of the oxygen outlet extension pipe B is connected to the oxygen outlet main pipe of the second adsorption tower. The fourth interface of the four-way connector is connected to an oxygen outlet main pipe, and the other end of the oxygen outlet main pipe is connected to an oxygen storage tank. Control valve E and control valve F are respectively installed on oxygen outlet extension pipe A and oxygen outlet extension pipe B. Flow regulating valve and gas outlet valve G are installed on the oxygen outlet main pipe.

[0012] The four-way pipe joint, control valve E, control valve F, and flow regulating valve are all centrally installed in the system pipeline within the outlet control valve assembly mounting cavity, facilitating the disassembly and assembly of multiple control valves for future maintenance and replacement.

[0013] Preferably, the vertical connecting pipe is located at the rear of the electrical control box, the upper end of the vertical connecting pipe is provided with an upper bend pipe connected to a four-way pipe connector, and the lower end of the vertical connecting pipe is provided with a lower bend pipe connected to the lower connecting pipe.

[0014] The working principle of an oxygen concentrator is as follows:

[0015] Inlet valves A and B, pressure equalizing valves C and D are all normally closed. After opening the supply valve on the main supply pipe, inlet valve A, control valve E, and pressure equalizing valve D are opened first. Compressed air supplied by the air tank can sequentially enter the inlet pipe of the first adsorption tower through tee connector A, supply branch pipe A, and tee connector B, and finally enter the bottom of the first adsorption tower. In the adsorption tower, nitrogen and other gases in the air are adsorbed by the molecular sieve, resulting in oxygen enrichment in the gas phase, which flows out from the outlet. Then, the flow regulating valve and outlet valve G are opened, and the oxygen-enriched air flows through the oxygen outlet extension pipe A and control valve. E. The four-way pipe joint, gas outlet valve G, and oxygen outlet main pipe supply gas to the gas storage tank. When the oxygen production of the first adsorption tower is about to end, the gas outlet valve G should be closed and the control valve F should be opened. The oxygen-enriched air in the first adsorption tower enters the upper part of the second adsorption tower through the pipeline to complete the upper pressure equalization of the second adsorption tower. Then, the control valve F should be closed and the pressure equalization valve D should be opened. The oxygen-enriched air in the first adsorption tower enters the lower part of the second adsorption tower through the pipeline to complete the lower pressure equalization of the second adsorption tower. Then, the pressure equalization valve D10, the gas inlet valve A, and the control valve E should be closed. The nitrogen venting valve at the bottom of the first adsorption tower should be opened to vent nitrogen.

[0016] While the first adsorption tower discharges nitrogen, inlet valve B is opened, and the other adsorption tower begins a new adsorption cycle using the same process. The first and second adsorption towers form an alternating cycle. Using air as raw material, this method utilizes the selective adsorption performance of a high-efficiency, highly selective solid adsorbent to separate nitrogen and oxygen from the air. By using two towers in parallel, alternating pressure adsorption and depressurization regeneration, a continuous oxygen flow is obtained, which has the advantages of low gas consumption and energy saving.

[0017] Preferably, the intake valve A, intake valve B, pressure equalizing valve C, pressure equalizing valve D, control valve E, and control valve F are all pneumatic angle seat valves.

[0018] Preferably, the pneumatic valve includes a valve body, and a pneumatic actuator is mounted on the upper part of the valve body. The pneumatic actuator controls the closing of the valve body. The pneumatic actuator has an air inlet and an air outlet. The air inlet and air outlet of the pneumatic actuator are respectively connected to a solenoid valve through corresponding air pipes. By controlling the reversal of the solenoid valve, compressed air controls the closing or opening of the valve body through the pneumatic actuator, so as to achieve the purpose of controlling the pipeline opening and closing through the pneumatic valve.

[0019] Preferably, the control cabinet includes two sets of side panels A, the tops of the two sets of side panels A are connected by a top plate A, and the bottoms of the two sets of side panels A are connected by a bottom plate A, forming a frame structure with openings at both the front and back.

[0020] Preferably, the electrical control box has an internal cavity for accommodating electrical components, and the front end of the cavity is open.

[0021] Preferably, the bottom plate B of the electrical control box is provided with a pull-out bracket connected to the side plate A. The pull-out bracket includes a left fixed slide beam and a right fixed slide beam that are parallel to each other and spaced apart. A fixed platform is connected between the left fixed slide beam and the right fixed slide beam. A central longitudinal beam parallel to the left fixed slide beam is provided in the middle of the fixed platform. The left fixed slide beam and the right fixed slide beam are respectively fixed to the inner walls of the two sets of side plates A of the control cabinet. A sliding side rail A that slides along its length is provided in the left fixed slide beam. A sliding side rail B that slides along its length is provided in the right fixed slide beam. An upper slide table is connected between the sliding side rail A and the sliding side rail B. A nylon slide strip that slides in cooperation with the central longitudinal beam is provided on the lower surface of the upper slide table. The upper slide table is integrally formed with the bottom surface of the electrical control box.

[0022] The electrical control box has an internal cavity for accommodating electrical components and has an open front end. The pull-out design allows the electrical control box to be removed from the control cabinet, making it easy to disassemble and maintain.

[0023] Preferably, both sliding rail A and sliding rail B are square steel tubes, and wear-resistant strips are respectively provided at the bottom of sliding rail A and sliding rail B along their length direction, which slide in cooperation with the inner surfaces of the left fixed slide beam and the right fixed slide beam.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The oxygen generator adsorption tower low gas consumption energy-saving device of this utility model, by adding a control cabinet and setting an electrical control box in the control cabinet, can centrally manage various equipment and components in the electrical control system. Operators can conveniently control the operation of the entire system, including functions such as start, stop, and adjustment. This centralized control method greatly improves work efficiency and reduces operational complexity.

[0026] The oxygen generator adsorption tower low-gas-consumption and energy-saving device of this utility model uses air as raw material and utilizes the selective adsorption performance of a high-efficiency and highly selective solid adsorbent to separate nitrogen and oxygen from the air. It uses two towers in parallel to alternately perform pressurized adsorption and depressurization regeneration, thereby obtaining a continuous oxygen flow, which has the advantages of low gas consumption and energy saving. Attached Figure Description

[0027] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0028] Figure 1 This is a schematic diagram of the structure of this utility model;

[0029] Figure 2 This is a schematic diagram of the internal structure of the control cabinet of this utility model;

[0030] Figure 3 This is a connection diagram of the oxygen outlet control valve assembly and the air inlet control valve assembly.

[0031] Figure 4 This is a structural diagram of the electrical control box.

[0032] In the diagram: 1. First adsorption tower; 2. Second adsorption tower; 3. Main gas supply pipe; 4. Branch gas supply pipe A; 5. Branch gas supply pipe B; 6. Lower connecting pipe; 7. Inlet valve A; 8. Inlet valve B; 9. Pressure equalizing valve C; 10. Pressure equalizing valve D; 11. Four-way pipe connector; 12. T-way pipe connector A; 13. T-way pipe connector B; 14. T-way pipe connector C; 15. Vertical connecting pipe; 16. Main oxygen outlet pipe; 17. Control valve E; 18. Control valve F; 19. Flow regulating valve; 20. Outlet valve G; 21. Control cabinet; 22. Cabinet door; 23. Outlet valve assembly mounting cavity; 24. Inlet valve assembly mounting cavity; 25. Electrical control box; 26. Left fixed slide beam; 27. Right fixed slide beam; 28. Sliding side rail A; 29. ​​Sliding side rail B; 30. Upper slide table; 31. Fixed platform; 32. Nylon slide strip; 33. Middle longitudinal beam; 34. Base. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings: The present invention will be further described below through specific embodiments, but it is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0034] Example 1, such as Figure 1-2 As shown, the oxygen generator adsorption tower low gas consumption energy-saving device includes a first adsorption tower 1, a second adsorption tower 2, and a control cabinet 21 arranged in a triangular pattern. The first adsorption tower 1, the second adsorption tower 2, and the control cabinet 21 are all mounted on the same base 34. A cabinet door 22 is installed at the front door opening of the control cabinet 21. The device is characterized in that: an electrical control box 25 is detachably installed in the middle of the control cabinet 21; the upper inner part of the control cabinet 21 is an oxygen outlet control valve assembly mounting cavity; the bottom inner part of the control cabinet 21 is an air inlet control valve assembly mounting cavity; an oxygen outlet control valve assembly is installed in the oxygen outlet control valve assembly mounting cavity; and an air inlet control valve assembly is installed in the air inlet control valve assembly mounting cavity.

[0035] By adding a control cabinet 21 and installing an electrical control box 25 within it, various devices and components in the electrical control system can be centrally managed. Operators can easily control the operation of the entire system, including functions such as starting, stopping, and adjusting. This centralized control method greatly improves work efficiency and reduces operational complexity.

[0036] Example 2, as Figure 1-4As shown, the oxygen generator adsorption tower low gas consumption energy-saving device includes a first adsorption tower 1, a second adsorption tower 2, and a control cabinet 21 arranged in a triangular pattern. The first adsorption tower 1, the second adsorption tower 2, and the control cabinet 21 are all mounted on the same base 34. A cabinet door 22 is installed at the front door opening of the control cabinet 21. The device is characterized in that: an electrical control box 25 is detachably installed in the middle of the control cabinet 21; the upper inner part of the control cabinet 21 is an oxygen outlet control valve assembly mounting cavity; the bottom inner part of the control cabinet 21 is an air inlet control valve assembly mounting cavity; an oxygen outlet control valve assembly is installed in the oxygen outlet control valve assembly mounting cavity; and an air inlet control valve assembly is installed in the air inlet control valve assembly mounting cavity.

[0037] Further, the intake control valve assembly includes intake valve A7, intake valve B8, pressure equalizing valve C9, pressure equalizing valve D10, and a three-way connector A12 located in the intake control valve assembly mounting cavity. The second and third ports of the three-way connector A12 are connected to the supply branch pipe A4 and the supply branch pipe B5, respectively. The other end of the supply branch pipe A4 is connected to the first port of the three-way connector B13. The second and third ports of the three-way connector B13 are connected to the intake pipe of the first adsorption tower 1 and the lower connecting pipe 6, respectively. The other end of the gas supply branch pipe B5 is connected to the first interface of the three-way pipe connector C14. The second and third interfaces of the three-way pipe connector C14 are connected to the gas inlet pipe of the second adsorption tower 2 and the lower connecting pipe 6, respectively. Gas inlet valves A7 and B8 are installed on the gas supply branch pipes A4 and B5, respectively. Pressure equalization valves C9 and D10 are installed at both ends of the lower connecting pipe 6, respectively. The first interface of the three-way pipe connector A12 is connected to the gas supply tank through the gas supply main pipe 3. A gas supply valve is installed on the gas supply main pipe 3.

[0038] The intake valve A7, intake valve B8, equalizing valve C9, equalizing valve D10, and three-way pipe joint A12 are all centrally installed in the system pipeline within the intake control valve assembly mounting cavity, facilitating the disassembly and assembly of multiple control valves for future maintenance and replacement.

[0039] Furthermore, the oxygen outlet control valve assembly includes a four-way connector 11, control valve E17, control valve F18, and flow regulating valve 19 located in the gas outlet control valve assembly installation cavity. The first interface of the four-way connector 11 is connected to a vertical connecting pipe 15, and the other end of the vertical connecting pipe 15 is connected to the middle of the lower connecting pipe 6. The second interface of the four-way connector 11 is connected to an oxygen outlet extension pipe A, and the other end of the oxygen outlet extension pipe A is connected to the oxygen outlet main pipe of the first adsorption tower 1. The third interface of the four-way connector 11 is connected to an oxygen outlet extension pipe B, and the other end of the oxygen outlet extension pipe B is connected to the oxygen outlet main pipe of the second adsorption tower 2. The fourth interface of the four-way connector 11 is connected to an oxygen outlet main pipe 16, and the other end of the oxygen outlet main pipe 16 is connected to an oxygen storage tank. Control valve E17 and control valve F18 are respectively installed on the oxygen outlet extension pipe A and oxygen outlet extension pipe B. Flow regulating valve 19 and gas outlet valve G20 are installed on the oxygen outlet main pipe 16.

[0040] The four-way pipe joint 11, control valve E17, control valve F18 and flow regulating valve 19 are all centrally installed in the system pipeline in the gas outlet control valve assembly mounting cavity, which facilitates the disassembly and assembly of multiple control valves, and makes it easier to inspect and replace the control valves later.

[0041] Furthermore, the vertical connecting pipe 15 is located on the rear side of the electrical control box 25. The upper end of the vertical connecting pipe 15 is provided with an upper bend pipe connected to the four-way pipe connector 11, and the lower end of the vertical connecting pipe 15 is provided with a lower bend pipe connected to the lower connecting pipe 6.

[0042] The working principle of an oxygen concentrator is as follows:

[0043] Inlet valves A7, B8, C9, and D10 are normally closed. After opening the supply valve on the main supply pipe 3, inlet valve A7, control valve E17, and pressure equalization valve D10 are opened first. Compressed air supplied by the air tank enters the inlet pipe of the first adsorption tower 1 through the three-way connector A12, supply branch pipe A4, and three-way connector B13, and finally enters the bottom of the first adsorption tower 1. In the adsorption tower, nitrogen and other gases in the air are adsorbed by the molecular sieve, which enriches oxygen in the gas phase and flows out from the outlet. Then, flow regulating valve 19 and outlet valve G20 are opened, and oxygen-enriched air flows through oxygen outlet extension pipe A and control valve E1. 7. The four-way pipe joint 11, the gas outlet valve G20, and the oxygen outlet main pipe 16 supply gas to the gas storage tank. When the oxygen production of the first adsorption tower 1 is about to end, the gas outlet valve G20 should be closed and the control valve F18 should be opened. The oxygen-enriched air in the first adsorption tower 1 enters the upper part of the second adsorption tower 2 through the pipeline to complete the upper pressure equalization of the second adsorption tower 2. Then, the control valve F18 should be closed and the pressure equalization valve D10 should be opened. The oxygen-enriched air in the first adsorption tower 1 enters the lower part of the second adsorption tower 2 through the pipeline to complete the lower pressure equalization of the second adsorption tower 2. Then, the pressure equalization valve D10, the gas inlet valve A7, and the control valve E17 should be closed, and the nitrogen venting valve at the bottom of the first adsorption tower 1 should be opened to vent nitrogen.

[0044] While the first adsorption tower 1 discharges nitrogen, the inlet valve B8 is opened, and the other adsorption tower starts a new adsorption cycle using the same process. The first adsorption tower 1 and the second adsorption tower 2 form an alternating cycle. Using air as raw material, the nitrogen and oxygen in the air are separated by utilizing the selective adsorption performance of a high-efficiency, highly selective solid adsorbent. By using two towers in parallel, alternating pressure adsorption and depressurization regeneration, a continuous oxygen flow is obtained, which has the advantages of low gas consumption and energy saving.

[0045] Furthermore, the intake valve A7, intake valve B8, pressure equalizing valve C9, pressure equalizing valve D10, control valve E17, and control valve F18 are all pneumatic angle seat valves.

[0046] Furthermore, the pneumatic valve includes a valve body, and a pneumatic actuator is mounted on the upper part of the valve body. The pneumatic actuator controls the closing of the valve body. The pneumatic actuator has an air inlet and an air outlet inside. The air inlet and air outlet of the pneumatic actuator are respectively connected to a solenoid valve through corresponding air pipes. By controlling the reversal of the solenoid valve, compressed air controls the closing or opening of the valve body through the pneumatic actuator, so as to achieve the purpose of controlling the pipeline opening and closing through the pneumatic valve.

[0047] Furthermore, the control cabinet 21 includes two sets of side panels A, the tops of the two sets of side panels A are connected by a top plate A, and the bottoms of the two sets of side panels A are connected by a bottom plate A, forming a frame structure with openings at both the front and back.

[0048] Furthermore, the electrical control box 25 has an internal cavity for accommodating electrical components, and the front end is an open end.

[0049] Furthermore, the bottom plate B of the electrical control box 25 is provided with a pull-out bracket connected to the side plate A. The pull-out bracket includes a left fixed slide beam 26 and a right fixed slide beam 27 that are parallel to each other and spaced apart. A fixed platform 31 is connected between the left fixed slide beam 26 and the right fixed slide beam 27. A central longitudinal beam 33 parallel to the left fixed slide beam 26 is provided in the middle of the fixed platform 31. The left fixed slide beam 26 and the right fixed slide beam 27 are respectively fixed to the control box. On the inner walls of the two sets of side panels A of the cabinet 21, a sliding side rail A28 that slides along its length is provided in the left fixed slide beam 26, and a sliding side rail B29 that slides along its length is provided in the right fixed slide beam 27. An upper slide table 30 is connected between the sliding side rail A28 and the sliding side rail B29. A nylon slide strip 32 that slides in cooperation with the middle longitudinal beam 33 is provided on the lower surface of the upper slide table 30. The upper slide table 30 is integrally formed with the bottom surface of the electrical control box 25.

[0050] The electrical control box 25 has an internal cavity for accommodating electrical components and has an open front end. The design of the pull-out bracket allows the electrical control box 25 to be removed from the control cabinet 21, making the electrical control box 25 easy to disassemble and maintain and accessible for maintenance.

[0051] Furthermore, both sliding rail A28 and sliding rail B29 are square steel tubes, and wear-resistant strips are respectively provided on the bottom of sliding rail A28 and sliding rail B29 along their length direction, which cooperate with the inner surface of the left fixed slide beam 26 and the right fixed slide beam 27 to slide.

[0052] The oxygen generator adsorption tower low gas consumption energy-saving device of this utility model, by adding a control cabinet and setting an electrical control box in the control cabinet, can centrally manage various equipment and components in the electrical control system. Operators can conveniently control the operation of the entire system, including functions such as start, stop, and adjustment. This centralized control method greatly improves work efficiency and reduces operational complexity.

[0053] The oxygen generator adsorption tower low-gas-consumption and energy-saving device of this utility model uses air as raw material and utilizes the selective adsorption performance of a high-efficiency and highly selective solid adsorbent to separate nitrogen and oxygen from the air. It uses two towers in parallel to alternately perform pressurized adsorption and depressurization regeneration, thereby obtaining a continuous oxygen flow, which has the advantages of low gas consumption and energy saving.

[0054] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

[0055] Any aspects of this invention not described in detail are well-known to those skilled in the art.

Claims

1. A low-gas-consumption and energy-saving device for an oxygen generator adsorption tower, comprising a first adsorption tower, a second adsorption tower, and a control cabinet arranged in a triangular pattern, wherein the first adsorption tower, the second adsorption tower, and the control cabinet are all mounted on the same base, and a cabinet door is installed at the front door opening of the control cabinet, characterized in that: An electrical control box is detachably installed in the middle of the control cabinet. The upper part of the control cabinet is the oxygen outlet control valve assembly mounting cavity, and the bottom of the control cabinet is the air intake control valve assembly mounting cavity. An oxygen outlet control valve assembly is installed in the oxygen outlet control valve assembly mounting cavity, and an air intake control valve assembly is installed in the air intake control valve assembly mounting cavity.

2. The low-gas-consumption and energy-saving device for the oxygen generator adsorption tower according to claim 1, characterized in that, The intake control valve assembly includes intake valve A, intake valve B, equalizing valve C, equalizing valve D, and a three-way connector A, all located in the intake control valve assembly mounting cavity. The second and third ports of the three-way connector A are connected to the supply branch pipe A and supply branch pipe B, respectively. The other end of the supply branch pipe A is connected to the first port of the three-way connector B. The second and third ports of the three-way connector B are connected to the intake pipe and lower connecting pipe of the first adsorption tower, respectively. The other end of the supply branch pipe B is connected to the first port of the three-way connector C. The second and third ports of the three-way connector C are connected to the intake pipe and lower connecting pipe of the second adsorption tower, respectively. Intake valve A and intake valve B are installed on the supply branch pipe A and supply branch pipe B, respectively. Equalizing valve C and equalizing valve D are installed at both ends of the lower connecting pipe, respectively. The first port of the three-way connector A is connected to the supply tank through the main supply pipe, and a supply valve is installed on the main supply pipe.

3. The low-gas-consumption and energy-saving device for the oxygen generator adsorption tower according to claim 2, characterized in that, The oxygen outlet control valve assembly includes a four-way connector, control valve E, control valve F, and flow regulating valve, all located in the gas outlet control valve assembly mounting cavity. The first port of the four-way connector is connected to a vertical connecting pipe, the other end of which is connected to the middle of a lower connecting pipe. The second port of the four-way connector is connected to an oxygen outlet extension pipe A, the other end of which is connected to the main oxygen outlet pipe of the first adsorption tower. The third port of the four-way connector is connected to an oxygen outlet extension pipe B, the other end of which is connected to the main oxygen outlet pipe of the second adsorption tower. The fourth port of the four-way connector is connected to a main oxygen outlet pipe, the other end of which is connected to an oxygen storage tank. Control valve E and control valve F are respectively installed on oxygen outlet extension pipes A and B. A flow regulating valve and a gas outlet valve G are installed on the main oxygen outlet pipe.

4. The low gas consumption and energy-saving device for the oxygen generator adsorption tower according to claim 3, characterized in that, The vertical connecting pipe is located at the rear of the electrical control box. The upper end of the vertical connecting pipe is provided with an upper bend pipe that connects to a four-way pipe connector, and the lower end of the vertical connecting pipe is provided with a lower bend pipe that connects to the lower connecting pipe.

5. The low-gas-consumption and energy-saving device for the oxygen generator adsorption tower according to claim 4, characterized in that, The intake valve A, intake valve B, pressure equalizing valve C, pressure equalizing valve D, control valve E, and control valve F are all pneumatic angle seat valves.

6. The low gas consumption and energy-saving device for the oxygen generator adsorption tower according to claim 5, characterized in that, The pneumatic valve includes a valve body, and a pneumatic actuator is mounted on the top of the valve body. The pneumatic actuator controls the closing of the valve body. The pneumatic actuator has an air inlet and an air outlet. The air inlet and air outlet of the pneumatic actuator are respectively connected to a solenoid valve through corresponding air pipes. By controlling the reversal of the solenoid valve, compressed air is used to control the closing or opening of the valve body through the pneumatic actuator, so as to achieve the purpose of controlling the pipeline opening and closing through the pneumatic valve.

7. The low-gas-consumption and energy-saving device for the oxygen generator adsorption tower according to claim 6, characterized in that, The control cabinet includes two sets of side panels A. The tops of the two sets of side panels A are connected by a top plate A, and the bottoms of the two sets of side panels A are connected by a bottom plate A, forming a frame structure with openings at both the front and back.

8. The low gas consumption and energy-saving device for the oxygen generator adsorption tower according to claim 7, characterized in that, The electrical control box has an internal cavity for accommodating electrical components, and the front end of the cavity is open.

9. The low-gas-consumption and energy-saving device for the oxygen generator adsorption tower according to claim 8, characterized in that, The bottom plate B of the electrical control box is equipped with a pull-out bracket connected to the side plate A. The pull-out bracket includes a left fixed slide beam and a right fixed slide beam that are parallel to each other and spaced apart. A fixed platform is connected between the left fixed slide beam and the right fixed slide beam. A central longitudinal beam parallel to the left fixed slide beam is provided in the middle of the fixed platform. The left fixed slide beam and the right fixed slide beam are respectively fixed to the inner walls of the two sets of side plates A of the control cabinet. A sliding side rail A that slides along its length is provided in the left fixed slide beam. A sliding side rail B that slides along its length is provided in the right fixed slide beam. An upper slide table is connected between the sliding side rail A and the sliding side rail B. A nylon slide strip that slides in cooperation with the central longitudinal beam is provided on the lower surface of the upper slide table. The upper slide table is integrally formed with the bottom surface of the electrical control box.

10. The low-gas-consumption and energy-saving device for the oxygen generator adsorption tower according to claim 9, characterized in that, Both sliding rail A and sliding rail B are square steel tubes. The bottom of sliding rail A and sliding rail B are respectively provided with wear-resistant strips that slide in cooperation with the inner surfaces of the left fixed slide beam and the right fixed slide beam.

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