Integrated pressure reducing valve and oxygen generating device

Abstract

The embodiment of the application relates to the technical field of oxygen production equipment, and particularly discloses an integrated pressure reducing valve and oxygen production equipment, which comprises a valve body provided with a first cavity and a second cavity, an air inlet channel and an air outlet channel are arranged on the valve body, the air inlet channel is communicated with the first cavity, and the air outlet channel is communicated with the second cavity; a pressure reducing valve assembly is arranged in the valve body, the pressure reducing valve assembly is arranged at a communication position between the first cavity and the second cavity, and the pressure reducing valve assembly can be used for reducing the gas pressure difference between the first cavity and the second cavity; a flow regulating valve assembly is partially arranged in the air outlet channel, and the flow regulating valve assembly can be used for regulating the gas flow rate flowing out of the air outlet channel; the gas flowing into the first cavity from the air inlet channel flows through the pressure reducing valve assembly into the second cavity, and flows out through the flow regulating valve assembly from the air outlet channel. Through the above mode, the application embodiment can reduce the use of pipelines to reduce the internal space of the oxygen production machine occupied by the pipelines.

Description

Technical Field

[0001] This application relates to the field of oxygen generation equipment technology, and in particular to an integrated pressure reducing valve and oxygen generation equipment. Background Technology

[0002] Molecular sieves are an important component in medical and home oxygen concentrators. They utilize pressure swing adsorption (PSA) technology to separate oxygen and nitrogen from the air, obtaining a high concentration of oxygen for patients to inhale. Oxygen concentrators typically also include pressure reducing valves and flow control valves; in related technologies, the pressure reducing valve is connected to the flow control valve via a pipeline.

[0003] The inventors of this application have discovered that the pressure reducing valve and the flow control valve are connected by a pipe. However, the pipe tends to occupy the internal space of the oxygen generator, which can reduce the utilization rate of the internal space and cause inconvenience. Utility Model Content

[0004] In view of the above problems, the present application provides an integrated pressure reducing valve and oxygen generating device, which overcomes or at least partially solves the above problems.

[0005] According to one aspect of this application, an integrated pressure reducing valve is provided, comprising: a valve body having a first cavity and a second cavity, the valve body having an inlet channel and an outlet channel, the inlet channel communicating with the first cavity and the outlet channel communicating with the second cavity; a pressure reducing valve assembly disposed within the valve body, the pressure reducing valve assembly being disposed at the communication point between the first cavity and the second cavity, the pressure reducing valve assembly being used to reduce the gas pressure difference between the first cavity and the second cavity; and a flow regulating valve assembly partially disposed within the outlet channel, the flow regulating valve assembly being used to regulate the gas flow rate from the outlet channel; wherein gas entering the first cavity from the inlet channel flows through the pressure reducing valve assembly into the second cavity, and flows out from the outlet channel through the flow regulating valve assembly.

[0006] In one optional embodiment, a mounting post is provided within the valve body, and the first cavity is located within the mounting post; a limiting post is provided within the valve body, located within the first cavity, and extending upward along the axial direction of the mounting post; the pressure reducing valve assembly includes a pressure reducing valve seat, a moving rod, a plug, a pressure reducing diaphragm, a first elastic element, and a second elastic element; the pressure reducing diaphragm is disposed at the bottom of the second cavity; the pressure reducing valve seat is connected to the mounting post; the pressure reducing valve seat and the pressure reducing diaphragm are spaced upward along the axial direction of the mounting post; one end of the moving rod is connected to the plug; the other end of the moving rod... An airflow channel passing through the pressure-reducing valve seat is connected to the pressure-reducing diaphragm. The airflow channel connects the first cavity and the second cavity. The first elastic element is sleeved on the limiting post. One end of the first elastic element abuts against the inner wall of the valve body, and the other end of the first elastic element abuts against the plug. One end of the second elastic element abuts against the side of the pressure-reducing diaphragm away from the pressure-reducing valve seat, and the other end of the second elastic element is grounded against the inner wall of the valve body. The moving rod can move up and down in the airflow channel to adjust the distance between the plug and the air inlet of the airflow channel.

[0007] In one alternative embodiment, the elastic force of the second elastic element is greater than the elastic force of the first elastic element.

[0008] In one alternative approach, when the sum of the gas pressure in the first cavity and the rebound force of the first elastic element is greater than the rebound force of the second elastic element, the plug and the moving rod move toward the pressure-reducing diaphragm, the moving rod pushes the pressure-reducing diaphragm downward, and the distance between the plug and the air inlet of the airflow channel gradually decreases. When the sum of the gas pressure in the first cavity and the rebound force of the second elastic element is less than the rebound force of the second elastic element, the plug and the moving rod move away from the pressure-reducing diaphragm, the second elastic element pushes the pressure-reducing diaphragm upward, and the distance between the plug and the air inlet of the airflow channel gradually increases.

[0009] In one alternative embodiment, the valve body is further provided with a third cavity and an adjustment hole communicating with the third cavity, and the second elastic element is located in the third cavity; the pressure reducing valve assembly further includes an adjustment nut, the adjustment nut being screwed into the adjustment hole, and one end of the adjustment nut abutting against the end of the second elastic element away from the pressure reducing diaphragm.

[0010] In one alternative embodiment, the flow control valve assembly includes a flow control valve core and a flow control motor, the flow control valve core and the flow control motor being electrically connected, the flow control valve core being at least partially disposed within the gas outlet channel, and the flow control valve core being capable of adjusting the gas flow rate from the gas outlet channel.

[0011] According to another aspect of this application, an oxygen generating device is provided, comprising a molecular sieve assembly, a connecting end cap, a four-way valve assembly, and an integrated pressure reducing valve as described above. The molecular sieve assembly is provided with a first vent and a second vent that are interconnected. The connecting end cap is detachably installed on the molecular sieve assembly and is provided with a gas channel that is connected to the first vent. The four-way valve assembly is detachably installed on the connecting end cap and is internally connected to the gas channel. The integrated pressure reducing valve is detachably installed on the connecting end cap, and the air inlet channel is connected to the second vent. External air can flow through the four-way valve assembly and the connecting end cap and enter the interior of the molecular sieve assembly through the first vent. The oxygen-enriched air obtained by sieving can flow into the air inlet channel of the integrated pressure reducing valve through the second vent.

[0012] In one alternative embodiment, the molecular sieve assembly includes a first sieve cylinder and a second sieve cylinder that are interconnected. The first pore is connected to the first sieve cylinder. The molecular sieve assembly is also provided with a third pore, which is connected to the second sieve cylinder and the gas channel. A gas collecting chamber is spaced between the first sieve cylinder and the second sieve cylinder. The bottom of the gas collecting chamber is connected to the first sieve cylinder and the second sieve cylinder. The gas collecting chamber is connected to the second pore. The gas sieved in the first sieve cylinder and the second sieve cylinder can enter the gas collecting chamber and flow out from the second pore.

[0013] In one optional embodiment, the gas channel includes a first gas channel and a second gas channel, the second gas channel being independent of the first gas channel; the connecting end cap is provided with a first connecting post and a second connecting post on the side near the molecular sieve assembly, the first connecting post being connected to the first gas channel, the second connecting post being connected to the second gas channel, the first connecting post being inserted into the first gas hole, and the second connecting post being inserted into the third gas hole; the four-way valve assembly is provided with a first gas outlet and a second gas outlet, the first gas outlet being connected to the first gas channel, and the second gas outlet being connected to the second gas channel.

[0014] In one alternative embodiment, the connecting end cap is further provided with a first sealing ring and a second sealing ring, the first sealing ring being sleeved on the first connecting post and the second sealing ring being sleeved on the second connecting post, the first sealing ring being located between the first connecting post and the wall of the first air hole, and the second sealing ring being located between the second connecting post and the wall of the third air hole.

[0015] The beneficial effects of this application embodiment are: unlike the prior art, this application embodiment is provided with a valve body, a pressure reducing valve assembly, and a flow regulating valve assembly. The valve body comprises a first chamber and a second chamber, with an inlet channel and an outlet channel. The inlet channel connects to the first chamber, and the outlet channel connects to the second chamber. A pressure reducing valve assembly is disposed within the valve body at the connection point between the first and second chambers. The pressure reducing valve assembly reduces the gas pressure difference between the first and second chambers. A flow regulating valve assembly is partially disposed within the outlet channel, regulating the flow rate of the gas exiting the outlet channel. Gas entering the first chamber from the inlet channel flows through the pressure reducing valve assembly into the second chamber and exits through the outlet channel via the flow regulating valve assembly. Compared to related technologies where the pressure reducing valve and flow control valve are connected via pipes, this application integrates the flow regulating valve assembly and the pressure reducing valve assembly by providing an outlet channel on the valve body, thereby reducing the use of pipes and minimizing the space occupied by pipes within the oxygen concentrator, thus improving the utilization rate of the oxygen concentrator's internal space. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the specific embodiments of this application or 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.

[0017] Figure 1 This is a partial structural schematic diagram of the oxygen generating equipment according to an embodiment of this application;

[0018] Figure 2 This is a partial exploded view of the oxygen generating equipment according to an embodiment of this application;

[0019] Figure 3 This is a side cross-sectional view of the molecular sieve assembly of the oxygen generating device according to an embodiment of this application;

[0020] Figure 4 This is a schematic diagram of the connection end cap structure of the oxygen generator according to an embodiment of this application from an angle.

[0021] Figure 5 This is a schematic diagram of the integrated pressure reducing valve structure of the oxygen generating equipment according to an embodiment of this application;

[0022] Figure 6 This is a side sectional view of the integrated pressure reducing valve structure of the oxygen generating device according to an embodiment of this application;

[0023] Figure 7 This is a cross-sectional view of another side of the integrated pressure reducing valve structure of the oxygen generating device according to an embodiment of this application;

[0024] Figure 8 yes Figure 6 Enlarged schematic diagram of the structure at point A in the middle. Detailed Implementation

[0025] To facilitate understanding of this application, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this specification are for illustrative purposes only.

[0026] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of this application. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0027] Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0028] It should be noted that: This application uses the integrated pressure reducing valve 20 applied to the oxygen generating equipment 1000 as an example for illustration. It can be understood that the integrated pressure reducing valve 20 in this application is not limited to the oxygen generating equipment 1000, but can also be applied to other equipment, such as gas systems, steam systems, etc.

[0029] Please see Figure 1 and Figure 2 The oxygen generator 1000 includes a molecular sieve assembly 10, an integrated pressure reducing valve 20, a connecting end cap 30, and a four-way valve assembly 40. The connecting end cap 30 is detachably installed on the molecular sieve assembly 10, the four-way valve assembly 40 is detachably installed on the connecting end cap 30, and the integrated pressure reducing valve 20 is detachably installed on the connecting end cap 30. The four-way valve assembly 40 and the connecting end cap 30 are interconnected. The connecting end cap 30 is connected to the air inlet of the molecular sieve assembly 10, and the integrated pressure reducing valve 20 is connected to the air outlet of the molecular sieve assembly 10. The molecular sieve assembly 10, the integrated pressure reducing valve 20, the connecting end cap 30, and the four-way valve assembly 40 are described in detail below.

[0030] For the aforementioned molecular sieve assembly 10, connecting end cap 30, and four-way valve assembly 40, such as Figures 2-4As shown, the molecular sieve assembly 10 is provided with a first vent 10a and a second vent 10b that are interconnected. The connecting end cap 30 is provided with a gas channel 30a, which is connected to the first vent 10a. The interior of the four-way valve assembly 40 is interconnected with the gas channel 30a. The integrated pressure reducing valve 20 is connected to the second vent 10b. External air can flow through the four-way valve assembly 40 and the connecting end cap 30 and flow into the interior of the molecular sieve assembly 10 from the first vent 10a. The oxygen-enriched air obtained by sieving can flow into the integrated pressure reducing valve 20 from the second vent 10b.

[0031] In some embodiments, the molecular sieve assembly 10 includes a first sieve cylinder 101 and a second sieve cylinder 102 that are interconnected. A first vent 10a is connected to the first sieve cylinder 101. The molecular sieve assembly 10 is also provided with a third vent 10c, which is connected to the second sieve cylinder 102 and a gas channel 30a. A gas collecting chamber 103 is spaced between the first sieve cylinder 101 and the second sieve cylinder 102. The bottom of the gas collecting chamber 103 is connected to the first sieve cylinder 101 and the second sieve cylinder 102. The gas collecting chamber 103 is connected to a second vent 10b. The gas sieved in the first sieve cylinder 101 and the second sieve cylinder 102 can enter the gas collecting chamber 103 and flow out from the second vent 10b. Gas flowing from the four-way valve assembly 40 into the gas channel 30a of the connecting end cover 30 can enter the first sieve cylinder 101 and the second sieve cylinder 102 through the first vent 10a and the third vent 10c respectively for gas sieving. The sieved gas enters the gas collecting chamber 103 from the bottom of the first sieve cylinder 101 and the second sieve cylinder 102. Since the gas collecting chamber 103 is connected to the second vent 10b, the gas in the gas collecting chamber 103 can flow out from the second vent 10b and enter the integrated pressure reducing valve 20.

[0032] In some embodiments, the gas channel 30a includes a first gas channel 30aa and a second gas channel 30ab, which are independent of each other. A first connecting post 301 and a second connecting post 302 are provided on the side of the connecting end cap 30 near the molecular sieve assembly 10. The first connecting post 301 is connected to the first gas channel 30aa, and the second connecting post 302 is connected to the second gas channel 30ab. The first connecting post 301 is inserted into the first vent 10a, and the second connecting post 302 is connected to the second gas channel 30ab. 302 is inserted into the third vent 10c. The four-way valve assembly 40 is provided with a first vent 41 and a second vent 42. The first vent 41 is connected to the first gas channel 30aa, and the second vent 42 is connected to the second gas channel 30ab. The gas flowing out from the first vent 41 flows into the first gas channel 30aa and through the first connecting post 301 into the first vent 10a. The gas flowing out from the second vent 42 flows into the second gas channel 30ab and through the second connecting post 302 into the third vent 10c.

[0033] In some embodiments, the connecting end cap 30 is further provided with a first sealing ring 3011 and a second sealing ring 3021. The first sealing ring 3011 is sleeved on the first connecting post 301, and the second sealing ring 3021 is sleeved on the second connecting post 302. The first sealing ring 3011 is located between the first connecting post 301 and the wall of the first vent 10a, and the second sealing ring 3021 is located between the second connecting post 302 and the wall of the third vent 10c. The first sealing ring 3011 can improve the airtightness between the first connecting post 301 and the first vent 10a to reduce air leakage, and the second sealing ring 3021 can improve the airtightness between the second connecting post 302 and the third vent 10c to reduce air leakage.

[0034] For the aforementioned integrated pressure reducing valve 20, such as Figure 2 , Figure 5 and Figure 6 As shown, the integrated pressure reducing valve 20 includes a valve body 21, a pressure reducing valve assembly 22, and a flow regulating valve assembly 23. The valve body 21 has a first chamber 21a and a second chamber 21b. An inlet channel 21c and an outlet channel 21d are provided on the valve body 21. The inlet channel 21c connects to the first chamber 21a, and the outlet channel 21d connects to the second chamber 21b. The pressure reducing valve assembly 22 is disposed within the valve body 21, at the connection point between the first chamber 21a and the second chamber 21b. The pressure reducing valve assembly 22 can be used to reduce the gas pressure difference between the first chamber 21a and the second chamber 21b. The flow regulating valve assembly 23 is partially disposed within the outlet channel 21d, and can be used to regulate the gas flow rate from the outlet channel 21d. In this configuration, gas flowing out from the second pore 10b of the molecular sieve assembly 10 flows into the inlet channel 21c of the integrated pressure reducing valve 20. Gas entering the first chamber 21a from the inlet channel 21c flows through the pressure reducing valve assembly 22 into the second chamber 21b, and then flows out from the outlet channel 21d through the flow regulating valve assembly 23. In some embodiments, the volume of the second chamber 21b is larger than the volume of the first chamber 21a.

[0035] In some embodiments, please refer to the following: Figure 7 The second cavity 21b is connected to the air outlet channel 21d through the air outlet 21f.

[0036] In some embodiments, a mounting post 211 is provided within the valve body 21, and a first cavity 21a is located within the mounting post 211. The mounting post 211 is used for mounting components in the pressure reducing valve assembly 22. The mounting post 211 is a hollow post, and the first cavity 21a is located in the middle of the mounting post 211. In some embodiments, the mounting post 211 extends from the inner wall of the valve body 21.

[0037] In some embodiments, a limiting post 212 is provided in the valve body 21. The limiting post 212 is located in the first cavity 21a and extends upward along the mounting post 211. The limiting post 212 is used for the installation of components in the pressure reducing valve assembly 22.

[0038] In some embodiments, please refer to the following: Figure 6 and Figure 8 The pressure reducing valve assembly 22 includes a pressure reducing valve seat 221, a moving rod 222, a plug 223, a pressure reducing diaphragm 224, a first elastic element 225, and a second elastic element 226. The pressure reducing diaphragm 224 is disposed at the bottom of the second cavity 21b. The pressure reducing valve seat 221 is connected to the mounting post 211. The pressure reducing valve seat 221 and the pressure reducing diaphragm 224 are spaced upward along the axial direction of the mounting post 211. One end of the moving rod 222 is connected to the plug 223, and the other end of the moving rod 222 passes through the airflow channel 221a on the pressure reducing valve seat 221 and is connected to the pressure reducing diaphragm 224. The airflow channel 221a... The first cavity 21a and the second cavity 21b are connected. The first elastic element 225 is sleeved on the limiting post 212. One end of the first elastic element 225 abuts against the inner wall of the valve body 21, and the other end of the first elastic element 225 abuts against the plug 223. One end of the second elastic element 226 abuts against the side of the pressure reducing diaphragm 224 away from the pressure reducing valve seat 221, and the other end of the second elastic element 226 is grounded against the inner wall of the valve body 21. The moving rod 222 can move up and down in the airflow channel 221a to adjust the distance between the plug 223 and the air inlet of the airflow channel 221a. When the moving rod 222 moves downward in the airflow channel 221a, the distance between the plug 223 and the air inlet of the airflow channel 221a gradually decreases, the gas throttling effect is enhanced, the moving rod 222 pushes the pressure-reducing diaphragm 224 downward, the volume of the second cavity 21b increases, which means that the gas density in the second cavity 21b decreases and the pressure decreases, so as to achieve the purpose of pressure reduction. When the moving rod 222 moves upward in the airflow channel 221a, the distance between the plug 223 and the air inlet of the airflow channel 221a gradually increases, the gas throttling effect weakens, the second elastic element 226 pushes the pressure-reducing diaphragm 224 upward, the volume of the second cavity 21b decreases, so as to achieve the purpose of pressure stabilization.

[0039] In some embodiments, the plug 223 is made of materials including, but not limited to, rubber.

[0040] In some embodiments, the elastic force of the second elastic member 226 is greater than the elastic force of the first elastic member 225.

[0041] In some embodiments, when the sum of the gas pressure in the first cavity 21a and the rebound force of the first elastic member 225 is greater than the rebound force of the second elastic member 226, the plug 223 and the moving rod 222 move toward the pressure-reducing diaphragm 224. The moving rod 222 pushes the pressure-reducing diaphragm 224 downward, and the distance between the plug 223 and the air inlet of the airflow channel 221a gradually decreases, the gas throttling effect is enhanced, and the moving rod 222 pushes the pressure-reducing diaphragm 224 downward, the volume of the second cavity 21b increases, which means that the gas density in the second cavity 21b decreases and the pressure decreases, so as to achieve the purpose of pressure reduction.

[0042] In some embodiments, when the sum of the gas pressure in the first cavity 21a and the rebound force of the second elastic member 226 is less than the rebound force of the second elastic member 226, the plug 223 and the moving rod 222 move away from the pressure-reducing diaphragm 224, the second elastic member 226 pushes the pressure-reducing diaphragm 224 upward, the gap between the plug 223 and the air inlet of the airflow channel 221a gradually increases, the gas throttling effect weakens, the second elastic member 226 pushes the pressure-reducing diaphragm 224 upward, and the volume of the second cavity 21b decreases, so as to achieve the purpose of stabilizing the pressure.

[0043] In some embodiments, the valve body 21 is further provided with a third cavity 21e and an adjustment hole 21ee communicating with the third cavity 21e. The second elastic member 226 is located in the third cavity 21e. The pressure reducing valve assembly 22 also includes an adjustment nut 227, which is screwed into the adjustment hole 21ee. One end of the adjustment nut 227 abuts against the end of the second elastic member 226 away from the pressure reducing diaphragm 224. The tightness of the second elastic member 226 can be adjusted by rotating the adjustment nut 227, so as to adjust the rebound force of the second elastic member 226.

[0044] In some embodiments, the flow control valve assembly 23 includes a flow control valve core 231 and a flow control motor 232, which are electrically connected. The flow control valve core 231 is at least partially disposed within the outlet passage 21d, and the flow control valve core 231 can regulate the gas flow rate from the outlet passage 21d. The flow control motor 232 can drive the flow control valve core 231 to move toward or away from the outlet of the outlet passage 21d. When the flow control valve core 231 moves toward the outlet of the outlet passage 21d and the gap between it and the outlet gradually decreases, the gas flow rate from the outlet passage 21d decreases. When the flow control valve core 231 moves away from the outlet of the outlet passage 21d and the gap between it and the outlet gradually increases, the gas flow rate from the outlet passage 21d increases.

[0045] In this embodiment, a valve body 21, a pressure reducing valve assembly 22, and a flow regulating valve assembly 23 are provided. The valve body 21 has a first cavity 21a and a second cavity 21b. An inlet channel 21c and an outlet channel 21d are provided on the valve body 21. The inlet channel 21c connects to the first cavity 21a, and the outlet channel 21d connects to the second cavity 21b. The pressure reducing valve assembly 22 is disposed within the valve body 21, at the connection point between the first cavity 21a and the second cavity 21b. The pressure reducing valve assembly 22 can reduce the gas pressure difference between the first cavity 21a and the second cavity 21b. The flow regulating valve assembly 23 is partially disposed within the outlet channel 21d, and can be used to regulate the flow of gas exiting from the outlet channel 21d. The gas flow rate is such that the gas entering the first chamber 21a from the inlet channel 21c flows through the pressure reducing valve assembly 22 into the second chamber 21b, and flows out from the outlet channel 21d through the flow regulating valve assembly 23. Compared with the related technology, where the pressure reducing valve and the flow control valve are connected by a pipeline, in this application, by setting the outlet channel 21d on the valve body 21, part of the flow regulating valve assembly 23 is set in the outlet channel 21d, thereby integrating the flow regulating valve assembly 23 and the pressure reducing valve assembly 22 into one unit, thereby reducing the use of pipelines, reducing the space occupied by pipelines in the oxygen generator, and thus improving the utilization rate of the internal space of the oxygen generator.

[0046] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. An integrated pressure reducing valve, characterized in that, include: The valve body is provided with a first cavity and a second cavity. The valve body is provided with an air inlet channel and an air outlet channel. The air inlet channel is connected to the first cavity, and the air outlet channel is connected to the second cavity. A pressure reducing valve assembly is disposed within the valve body, and the pressure reducing valve assembly is disposed at the communication point between the first cavity and the second cavity. The pressure reducing valve assembly can be used to reduce the gas pressure difference between the first cavity and the second cavity. A flow control valve assembly is partially disposed within the gas outlet channel, and the flow control valve assembly can be used to regulate the gas flow rate from the gas outlet channel. Gas entering the first cavity through the intake channel flows through the pressure reducing valve assembly into the second cavity, and exits through the outlet channel via the flow regulating valve assembly.

2. The integrated pressure reducing valve according to claim 1, characterized in that, The valve body is provided with a mounting post, and the first cavity is located inside the mounting post; A limiting post is provided in the valve body, the limiting post is located in the first cavity, and the limiting post extends upward along the mounting post axis; The pressure reducing valve assembly includes a pressure reducing valve seat, a moving rod, a plug, a pressure reducing diaphragm, a first elastic element, and a second elastic element. The pressure reducing diaphragm is disposed at the bottom of the second cavity. The pressure reducing valve seat is connected to the mounting post. The pressure reducing valve seat and the pressure reducing diaphragm are spaced upward along the axial direction of the mounting post. One end of the moving rod is connected to the plug, and the other end of the moving rod passes through an airflow channel on the pressure reducing valve seat and connects to the pressure reducing diaphragm. The airflow channel connects the first cavity and the second cavity. The first elastic element is sleeved on the limiting post. One end of the first elastic element abuts against the inner wall of the valve body, and the other end of the first elastic element abuts against the plug. One end of the second elastic element abuts against the side of the pressure reducing diaphragm away from the pressure reducing valve seat, and the other end of the second elastic element abuts against the inner wall of the valve body. The moving rod can move up and down within the airflow channel to adjust the distance between the plug and the air inlet of the airflow channel.

3. The integrated pressure reducing valve according to claim 2, characterized in that, The elastic force of the second elastic element is greater than that of the first elastic element.

4. The integrated pressure reducing valve according to claim 3, characterized in that, When the sum of the gas pressure in the first cavity and the rebound force of the first elastic element is greater than the rebound force of the second elastic element, the plug and the moving rod move toward the pressure-reducing diaphragm, the moving rod pushes the pressure-reducing diaphragm downward, and the distance between the plug and the air inlet of the airflow channel gradually decreases. When the sum of the gas pressure in the first cavity and the rebound force of the second elastic element is less than the rebound force of the second elastic element, the plug and the moving rod move away from the pressure-reducing diaphragm, the second elastic element pushes the pressure-reducing diaphragm upward, and the distance between the plug and the air inlet of the airflow channel gradually increases.

5. The integrated pressure reducing valve according to claim 2, characterized in that, The valve body is also provided with a third cavity and an adjustment hole communicating with the third cavity, and the second elastic element is located in the third cavity; The pressure reducing valve assembly also includes an adjusting nut, which is screwed into the adjusting hole, and one end of the adjusting nut abuts against the end of the second elastic element away from the pressure reducing diaphragm.

6. The integrated pressure reducing valve according to claim 1, characterized in that, The flow regulating valve assembly includes a flow regulating valve core and a flow regulating motor. The flow regulating valve core and the flow regulating motor are electrically connected. The flow regulating valve core is at least partially disposed in the gas outlet channel. The flow regulating valve core can regulate the gas flow rate from the gas outlet channel.

7. An oxygen generating device, characterized in that, The invention includes a molecular sieve assembly, a connecting end cap, a four-way valve assembly, and an integrated pressure reducing valve as described in any one of claims 1-6. The molecular sieve assembly is provided with a first vent and a second vent that are interconnected. The connecting end cap is detachably installed on the molecular sieve assembly and is provided with a gas channel that is connected to the first vent. The four-way valve assembly is detachably installed on the connecting end cap and is internally connected to the gas channel. The integrated pressure reducing valve is detachably installed on the connecting end cap. The air inlet channel is connected to the second vent. External air can flow through the four-way valve assembly and the connecting end cap and enter the interior of the molecular sieve assembly through the first vent. The oxygen-enriched air obtained by sieving can flow into the air inlet channel of the integrated pressure reducing valve through the second vent.

8. The oxygen generating equipment according to claim 7, characterized in that, The molecular sieve assembly includes a first sieve cylinder and a second sieve cylinder that are interconnected. The first pore is connected to the first sieve cylinder. The molecular sieve assembly is also provided with a third pore, which is connected to the second sieve cylinder and the gas channel. A gas collecting chamber is spaced between the first sieve cylinder and the second sieve cylinder. The bottom of the gas collecting chamber is connected to the first sieve cylinder and the second sieve cylinder. The gas collecting chamber is connected to the second pore. The gas sieved in the first sieve cylinder and the second sieve cylinder can enter the gas collecting chamber and flow out from the second pore.

9. The oxygen generating equipment according to claim 8, characterized in that, The gas channel includes a first gas channel and a second gas channel, and the second gas channel and the first gas channel are independent of each other; The connecting end cap is provided with a first connecting post and a second connecting post on the side near the molecular sieve assembly. The first connecting post is connected to the first gas channel, and the second connecting post is connected to the second gas channel. The first connecting post is inserted into the first gas hole, and the second connecting post is inserted into the third gas hole. The four-way valve assembly is provided with a first air outlet and a second air outlet, the first air outlet being connected to the first gas channel and the second air outlet being connected to the second gas channel.

10. The oxygen generating equipment according to claim 9, characterized in that, The connecting end cap is also provided with a first sealing ring and a second sealing ring. The first sealing ring is sleeved on the first connecting post, and the second sealing ring is sleeved on the second connecting post. The first sealing ring is located between the first connecting post and the wall of the first air hole, and the second sealing ring is located between the second connecting post and the wall of the third air hole.

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