Diaphragm type oxygen generation valve

Abstract

The utility model provides a diaphragm type oxygen generation valve which comprises a valve body, a left valve rod assembly and a right valve rod assembly, the left valve rod assembly and the right valve rod assembly are installed in the valve body in a sliding mode, the upper end of the left valve rod assembly is sleeved with a left diaphragm, a left gland is installed on the portion, located on the upper side of the left diaphragm, of the valve body, and the left gland presses and fixes the outer edge of the left diaphragm; a left control cavity is formed between the left gland and the left diaphragm, and a left miniature electromagnetic valve communicated with the left control cavity is mounted on the valve body; the upper end of the right valve rod assembly is sleeved with a right diaphragm, a right gland is fixed to the valve body, and the outer edge of the right diaphragm is fixed through the right gland. A right control cavity is formed between the right gland and the right diaphragm, and a right miniature electromagnetic valve communicated with the right control cavity is installed on the valve body. The diaphragm type oxygen generation valve overcomes the defects that an existing oxygen generation valve is driven by a piston, so that the anti-pollution capacity is poor, and the service life is short.

Description

Technical Field

[0001] The utility model relates to the field of oxygen-generating valves, in particular to a diaphragm-type oxygen-generating valve. Background Art

[0002] Oxygen plays a vital role in numerous fields, including medicine, industry, and scientific research. Molecular sieve oxygen concentrators utilize physical pressure swing adsorption (PSA) technology. Their principle involves using an air compressor to force oxygen and nitrogen from the air through a molecular sieve. The molecular sieve's differential adsorption capacity for oxygen and nitrogen in the air separates the two gases, resulting in a high-concentration oxygen. As a key component in oxygen concentrators, the performance and quality of the oxygen concentrator valve directly impact the efficiency and stability of oxygen production.

[0003] For example, Patent No. CN220351725U discloses a silent oxygen generator valve. The other end of the valve stem assembly is fixedly connected to a piston holder body. The piston holder body is installed in the internal hole of the valve body. The piston holder body has an O-ring inserted into the mouth groove of the piston holder body. The piston holder body contains a piston body and a Y-ring. The Y-ring is inserted into the piston body, and the piston body abuts one end of the valve stem assembly. In this structure, the valve stem assembly is driven by the piston, which has poor anti-fouling ability and is prone to jamming when dirty, resulting in a short service life. Utility Model Content

[0004] (1) Technical issues to be resolved

[0005] The problem to be solved by the utility model is to provide a diaphragm type oxygen-generating valve to overcome the defects of the existing oxygen-generating valves that are piston-driven and result in poor anti-fouling ability and short service life.

[0006] (2) Technical solution

[0007] In order to solve the technical problem, the utility model provides a diaphragm-type oxygen-generating valve, comprising a valve body and a left valve stem assembly and a right valve stem assembly slidably mounted in the valve body, the upper end of the left valve stem assembly being sleeved with a left diaphragm, and the valve body being mounted with a left pressure cover on the upper side of the left diaphragm, the left pressure cover pressing and fixing the outer edge of the left diaphragm; a left control chamber is formed between the left pressure cover and the left diaphragm, and a left micro-solenoid valve communicating with the left control chamber is mounted on the valve body; a right diaphragm is sleeved on the upper end of the right valve stem assembly, and a right pressure cover is fixed on the valve body, the outer edge of the right diaphragm being fixed by the right pressure cover; a right control chamber is formed between the right pressure cover and the right diaphragm, and a right micro-solenoid valve communicating with the right control chamber is mounted on the valve body.

[0008] In some embodiments, a bottom plate is fixed to the bottom of the valve body, and a left air inlet cavity and a right air inlet cavity are formed between the bottom plate and the valve body. The left air inlet cavity corresponds to the left valve stem assembly, and the right air inlet cavity corresponds to the right valve stem assembly; a P port is provided on the valve body, and the P port is connected to the left air inlet cavity and the right air inlet cavity, respectively.

[0009] In some embodiments, a left exhaust cavity is formed between the left diaphragm and the valve body, a right exhaust cavity is formed between the right diaphragm and the valve body, and an R port is provided on the valve body, and the R port connects the left exhaust cavity and the right exhaust cavity respectively.

[0010] In some embodiments, a first spring is installed between the left valve stem assembly and the base plate, and the first spring always causes the left valve stem assembly to tend to move upward; a second spring is installed between the right valve stem assembly and the base plate, and the second spring always causes the right valve stem assembly to tend to move upward.

[0011] In some embodiments, the left valve stem assembly and the right valve stem assembly have the same structure, both including a slidable movable rod, a diaphragm seat fixed to the upper end of the movable rod, and sealing gaskets respectively mounted on the upper and lower sides of the movable rod.

[0012] In some embodiments, the valve body is provided with a port A and a port B, the port A is located between the two sealing gaskets of the left valve stem assembly, and the port B is located between the two sealing gaskets of the right valve stem assembly.

[0013] In some embodiments, a first sealing ring is installed between the bottom plate and the valve body. An upper cover is fixed to the upper end of the valve body, and a second sealing ring is installed between the upper cover and the left gland and between the upper cover and the right gland.

[0014] In some embodiments, the left diaphragm and the right diaphragm have the same structure, the left pressure cover and the right pressure cover have the same structure, and the left micro solenoid valve and the right micro solenoid valve have the same structure.

[0015] (3) Beneficial effects

[0016] The utility model provides a diaphragm-type oxygen-generating valve, which is provided with a left diaphragm and a right diaphragm. A left control chamber is formed between the left diaphragm and the left pressure cover, and a right control chamber is formed between the right diaphragm and the right pressure cover. The left control chamber can be controlled to expand or contract by a left micro-solenoid valve, thereby driving the movement of a left valve stem assembly. The right control chamber can be controlled to expand or contract by a right micro-solenoid valve, thereby driving the movement of a right valve stem assembly. The diaphragm-type drive structure is adopted to replace the traditional piston-type structure, thereby enhancing the anti-fouling ability of the oxygen-generating valve, making it less likely to get stuck, and effectively extending its service life. The utility model overcomes the defects of the existing oxygen-generating valve that adopts a piston drive, resulting in poor anti-fouling ability and short service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0018] Figure 1 This is a structural diagram of a diaphragm type oxygen making valve of the utility model;

[0019] Figure 2 This is a structural diagram of the P port, A port, B port and R port of a diaphragm type oxygen making valve of the utility model;

[0020] Figure 3 This is a structural diagram of the left valve stem assembly of a diaphragm type oxygen-generating valve of the utility model;

[0021] Figure 4 This is a structural diagram of a diaphragm-type oxygen-making valve of the utility model, in which the P port is connected to the B port, and the A port is connected to the R port;

[0022] Figure 5 This is a structural diagram of a diaphragm-type oxygen-making valve of the utility model, in which port P is connected to port A, and port B is connected to port R;

[0023] The names of the components corresponding to the various figure marks in the figure are: 1. valve body; 2. left valve stem assembly; 3. right valve stem assembly; 4. left diaphragm; 5. left pressure cover; 6. left micro solenoid valve; 7. right diaphragm; 8. right pressure cover; 9. right micro solenoid valve; 10. bottom plate; 11. first spring; 12. second spring; 13. first sealing ring; 14. upper cover; 15. second sealing ring; 21. movable rod; 22. diaphragm seat; 23. sealing gasket; 101. left air inlet chamber; 102. right air inlet chamber; 103. left exhaust chamber; 104. right exhaust chamber; 401. left control chamber; 701. right control chamber. DETAILED DESCRIPTION

[0024] The present application is described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] The following describes the embodiments of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the features in the following embodiments and embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative work are within the scope of protection of this application.

[0026] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on this application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement an apparatus and / or practice a method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this apparatus and / or practice this method.

[0027] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The illustrations only show components related to the present application and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0028] Additionally, in the following description, specific details are provided to provide a thorough understanding of the examples, however, one skilled in the art will appreciate that the examples can be practiced without these specific details.

[0029] The following describes the technical solutions provided by various embodiments of the present application in conjunction with the accompanying drawings.

[0030] See Figures 1 to 5 The utility model provides a diaphragm oxygen-generating valve, comprising a valve body 1 and a left valve stem assembly 2 and a right valve stem assembly 3 slidably mounted in the valve body 1. The left valve stem assembly 2 and the right valve stem assembly 3 are arranged in parallel, and a cavity is provided in the valve body 1 for the left valve stem assembly 2 and the right valve stem assembly 3 to slide.

[0031] See Figure 1The left valve stem assembly 2 has a left diaphragm 4 mounted on its upper end. The left diaphragm 4 can be made of rubber and has a certain degree of deformability. A left gland 5 is mounted on the upper side of the valve body 1. The left gland 5 has an annular flange facing the left diaphragm 4. The annular flange of the left gland 5 presses against the outer edge of the left diaphragm 4, thereby securing the left diaphragm 4 between the gland 5 and the valve body 1. A left control chamber 401 is formed between the left gland 5 and the left diaphragm 4. The valve body 1 has a left micro-solenoid valve 6 mounted on its upper end, communicating with the left control chamber 401. The left micro-solenoid valve 6 is conventional and will not be described in detail in this embodiment. The right valve stem assembly 3 has a right diaphragm 7 mounted on its upper end. A right gland 8 is mounted on the valve body 1. The right gland 8 has an annular flange facing the right diaphragm 7. The annular flange of the right gland 8 presses against the outer edge of the right diaphragm 7, thereby securing the right diaphragm 7 between the gland 8 and the valve body 1. A right control chamber 701 is formed between the right gland 8 and the right diaphragm 7. A right micro-solenoid valve 9, communicating with the right control chamber 701, is mounted on the valve body 1. The right micro-solenoid valve 9 is conventional and will not be described in detail in this embodiment. This structure, which utilizes a diaphragm-type drive mechanism instead of a traditional piston-type mechanism, enhances the oxygen valve's anti-fouling capabilities, resists jamming, and effectively extends its service life.

[0032] In some embodiments, as Figure 1 and Figure 2 As shown, a base plate 10 is fixed to the bottom of the valve body 1. A left air inlet chamber 101 and a right air inlet chamber 102 are formed between the base plate 10 and the valve body 1. The left air inlet chamber 101 corresponds to the left valve stem assembly 2, and the right air inlet chamber 102 corresponds to the right valve stem assembly 3. A P port is provided on the valve body 1, connecting the left air inlet chamber 101 and the right air inlet chamber 102, respectively. For convenient control, the P port connects the left micro-solenoid valve 6 and the right micro-solenoid valve 9 through a channel inside the valve body. A left exhaust chamber 103 is formed between the left diaphragm 4 and the valve body 1, and a right exhaust chamber 104 is formed between the right diaphragm 7 and the valve body 1. The valve body 1 is provided with an R port, connecting the left exhaust chamber 103 and the right exhaust chamber 104, respectively.

[0033] In some embodiments, as Figures 1 to 3 As shown, to simplify the structure, the left valve stem assembly 2 and the right valve stem assembly 3 have the same structure. Both include a slidable movable rod 21, a diaphragm seat 22 fixed to the upper end of the movable rod 21, and sealing gaskets 23 respectively mounted on the upper and lower sides of the movable rod 21. The left and right diaphragms are mounted on the corresponding diaphragm seats 22. The valve body 1 is provided with port A and port B. Port A is located between the two sealing gaskets 23 of the left valve stem assembly 2, and port B is located between the two sealing gaskets 23 of the right valve stem assembly 3.

[0034] In some embodiments, as Figure 1 and Figure 2As shown, a first spring 11 is installed between the left valve stem assembly 2 and the base plate 10, which constantly forces the left valve stem assembly 2 to move upward. A second spring 12 is installed between the right valve stem assembly 3 and the base plate 10, which constantly forces the right valve stem assembly 3 to move upward. Under normal conditions, the left and right micro-solenoid valves 6 and 9 are de-energized. Under the action of the first and second springs 11 and 12, both the left and right valve stem assemblies 2 and 3 are in their upper limit positions. At this point, ports A and B are connected to port R, respectively, and port P is isolated from ports A and B.

[0035] In some embodiments, as Figure 1 and Figure 2 As shown, a first sealing ring 13 is installed between the base plate 10 and the valve body 1. A top cover 14 is fixed to the upper end of the valve body 1. Second sealing rings 15 are installed between the top cover 14 and the left gland 5 and between the top cover 14 and the right gland 8, respectively. The addition of the first sealing ring 13 and the second sealing ring 15 helps ensure a tight seal.

[0036] In some embodiments, as Figure 1 As shown, in order to simplify the structure, the left diaphragm 4 and the right diaphragm 7 have the same structure, the left pressure cover 5 and the right pressure cover 8 have the same structure, and the left micro solenoid valve 6 and the right micro solenoid valve 9 have the same structure.

[0037] The use process of this oxygen valve is as follows:

[0038] When in use, the P port of the oxygen valve is connected to the gas source, the AB port is connected to the molecular sieve AB respectively, and the R port is connected to the equipment exhaust system. Figure 4 When the left micro solenoid valve 6 is powered off and the right micro solenoid valve 9 is powered on, the left valve stem assembly 2 is in the upper limit position under the action of the first spring 11. At this time, PA is closed and AR is opened; when the right micro solenoid valve 9 is powered on, the gas at the P port directly enters the right control chamber 701, thereby causing the right valve stem assembly 3 to overcome the spring force of the second spring 12 and move downward. At this time, PB is open, and the gas at the P port directly enters the B cylinder molecular sieve, and BR is closed; when AR is opened, the nitrogen and other gases in the molecular sieve A are discharged from the R port through the exhaust muffler.

[0039] See Figure 5 When the left micro solenoid valve 6 is energized and the right micro solenoid valve 9 is de-energized, the right valve stem assembly 3 is in the upper limit position under the action of the second spring 12. At this time, PB is closed and BR is opened; when the left micro solenoid valve 6 is energized, the gas at the P port directly enters the left control chamber 401, thereby causing the left valve stem assembly 2 to overcome the spring force of the first spring 11 and move downward. At this time, PA is open, and the gas at the P port directly enters the A cylinder molecular sieve, and AR is closed; when BR is opened, the nitrogen and other gases in the molecular sieve B are discharged from the R port through the exhaust muffler.

[0040] The same or similar parts between the various embodiments in this specification can be referred to each other, and each embodiment focuses on the differences from other embodiments.

[0041] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A diaphragm oxygen valve, characterized by: The invention comprises a valve body (1) and a left valve stem assembly (2) and a right valve stem assembly (3) which are slidably mounted in the valve body (1); the upper end of the left valve stem assembly (2) is provided with a left diaphragm (4); the valve body (1) is provided with a left pressure cover (5) on the upper side of the left diaphragm (4); the left pressure cover (5) presses and fixes the outer edge of the left diaphragm (4); a left control chamber (401) is formed between the left pressure cover (5) and the left diaphragm (4); a valve body (1) is provided with a left pressure cover (5) on the upper side of ... A left micro-electromagnetic valve (6) connected to the left control chamber (401) is installed; a right diaphragm (7) is sleeved on the upper end of the right valve stem assembly (3); a right pressure cover (8) is fixed on the valve body (1), and the outer edge of the right diaphragm (7) is fixed by the right pressure cover (8); a right control chamber (701) is formed between the right pressure cover (8) and the right diaphragm (7), and a right micro-electromagnetic valve (9) connected to the right control chamber (701) is installed on the valve body (1).

2. The diaphragm oxygen valve according to claim 1, characterized in that: A bottom plate (10) is fixed to the bottom of the valve body (1), and a left air inlet cavity (101) and a right air inlet cavity (102) are formed between the bottom plate (10) and the valve body (1), wherein the left air inlet cavity (101) corresponds to the left valve stem assembly (2), and the right air inlet cavity (102) corresponds to the right valve stem assembly (3); a P port is provided on the valve body (1), and the P port is connected to the left air inlet cavity (101) and the right air inlet cavity (102), respectively.

3. The diaphragm oxygen valve according to claim 1, characterized in that: A left exhaust chamber (103) is formed between the left diaphragm (4) and the valve body (1), and a right exhaust chamber (104) is formed between the right diaphragm (7) and the valve body (1). An R port is provided on the valve body (1), and the R port is connected to the left exhaust chamber (103) and the right exhaust chamber (104).

4. The diaphragm oxygen valve according to claim 2, characterized in that: A first spring (11) is installed between the left valve stem assembly (2) and the base plate (10), and the first spring (11) always causes the left valve stem assembly (2) to have an upward movement tendency; a second spring (12) is installed between the right valve stem assembly (3) and the base plate (10), and the second spring (12) always causes the right valve stem assembly (3) to have an upward movement tendency.

5. The diaphragm oxygen valve according to claim 1, characterized in that: The left valve stem assembly (2) and the right valve stem assembly (3) have the same structure, both comprising a slidable movable rod (21), a diaphragm seat (22) fixed to the upper end of the movable rod (21), and sealing gaskets (23) respectively mounted on the upper and lower sides of the movable rod (21).

6. The diaphragm oxygen valve according to claim 5, characterized in that: The valve body (1) is provided with an A port and a B port, wherein the A port is located between the two sealing gaskets (23) of the left valve stem assembly (2), and the B port is located between the two sealing gaskets (23) of the right valve stem assembly (3).

7. The diaphragm oxygen valve according to claim 2, characterized in that: A first sealing ring (13) is installed between the bottom plate (10) and the valve body (1).

8. The diaphragm oxygen valve according to claim 1, characterized in that: An upper cover (14) is fixed to the upper end of the valve body (1), and a second sealing ring (15) is installed between the upper cover (14) and the left gland (5) and between the upper cover (14) and the right gland (8), respectively.

9. The diaphragm oxygen valve according to claim 1, characterized in that: The left diaphragm (4) and the right diaphragm (7) have the same structure, the left pressure cover (5) and the right pressure cover (8) have the same structure, and the left micro solenoid valve (6) and the right micro solenoid valve (9) have the same structure.

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