High-reliability oxygen production valve

Abstract

The utility model discloses a high-reliability oxygen production valve which comprises a valve seat and a pair of electromagnetic valves arranged on the valve seat. The electromagnetic valve is provided with an electromagnetic valve air inlet channel and an electromagnetic valve air outlet channel; the valve seat comprises a confluence plate, a valve body and a valve cover; a pair of diaphragm cavities is formed in the valve body and used for installing a diaphragm assembly. A confluence plate air inlet channel and a confluence plate air outlet channel are arranged in the confluence plate; the confluence plate air inlet channel comprises a vertical channel A and a transverse channel, and a vertical channel B is arranged on the transverse channel; the valve body is provided with a valve body air inlet channel, and the valve body air inlet channel comprises a longitudinal channel and a vertical channel C; one end of the longitudinal channel is connected with an inclined channel; a valve body air outlet channel is arranged in the middle of the diaphragm cavity, and a valve body exhaust channel is arranged on the upper portion of the diaphragm cavity. According to the high-reliability oxygen generation valve disclosed by the utility model, a channel of the valve port is easy to open through a specific structure, so that normal oxygen generation can be ensured in environments with thin air, such as plateau and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to solenoid valve technical field, concretely relates to a kind of high reliability oxygen production valve. BACKGROUND

[0002] Oxygen generator is a kind of machine for making oxygen, its principle is to extract oxygen in air by air separation technology, for household or medical use.Molecular sieve oxygen generator is to adopt physical pressure swing adsorption oxygen production technology, its oxygen production principle is mainly through air compressor, oxygen and nitrogen in air pass through molecular sieve, utilize the difference of the adsorption capacity of molecular sieve to oxygen and nitrogen in air to separate oxygen and nitrogen, to obtain high concentration oxygen.The maximum oxygen production pressure of molecular sieve oxygen generator is 0.2-0.3MPa, there is no high pressure flammable and explosive danger.And support long time operation oxygen production, it is the most popular household oxygen generator at present.

[0003] As China patent CN207921397U discloses an oxygen production valve, including valve seat, fixed on the valve seat's busbar and a pair of fixed on the busbar micro solenoid valve;The valve seat inside symmetry is equipped with a pair of I-shaped chamber, the upper and lower parts of I-shaped chamber are equipped with upper elastic diaphragm and lower elastic diaphragm connected by valve stem respectively, the lower elastic diaphragm has first through hole, the lower elastic diaphragm below is equipped with membrane cover;The valve seat is equipped with valve seat exhaust port and valve seat gas inlet port communicated with the upper part of the I-shaped chamber and a pair of valve seat gas outlet ports communicated with the middle part of the pair of I-shaped chamber respectively;The valve seat inside is also equipped with gas inlet channel with one end communicated with the gas inlet port and the other end located at the top of the valve seat;The busbar is equipped with busbar gas inlet port, a pair of busbar gas outlet ports communicated with the busbar gas inlet port and a pair of second through holes located above the pair of I-shaped chamber respectively;The busbar gas inlet port is communicated with the gas inlet channel;The busbar gas outlet port is communicated with the electromagnetic valve inlet of micro solenoid valve, and the second through hole is communicated with the electromagnetic valve outlet of micro solenoid valve;The side of micro solenoid valve has electromagnetic valve exhaust port.

[0004] In the above prior art, oxygen production valve needs high pressure gas to extrude elastic diaphragm, so that it deforms to open the channel of valve port, so that gas enters molecular sieve to produce oxygen;However, places where oxygen generator needs to be used frequently are mostly in high altitude and other air thin environment, and in high altitude and other air thin environment, the air pressure output by compressor becomes small, elastic diaphragm cannot be deformed fully, the channel of valve port cannot be opened or opened small, thereby leading to the situation that oxygen production system cannot produce oxygen normally. UTILITY MODEL CONTENTS

[0005] In response to the shortcomings of the prior art, the present application provides a highly reliable oxygen-generating valve. The highly reliable oxygen-generating valve of the present application utilizes a specific structure to facilitate the opening of the valve port, thereby ensuring normal oxygen production even in thin air environments such as plateaus.

[0006] The technical solution of this application is:

[0007] 1. The oxygen-generating valve with high reliability comprises a valve seat and a pair of solenoid valves arranged on the valve seat; the solenoid valve is provided with a solenoid valve inlet channel and a solenoid valve outlet channel in sequence; the valve seat comprises a manifold, a valve body and a valve cover in sequence, the top surface of the manifold abuts against the solenoid valve; a pair of diaphragm cavities are provided inside the valve body for installing a diaphragm assembly; a manifold inlet channel and a pair of manifold outlet channels are provided inside the manifold; the manifold inlet channel comprises two vertical channels A and one transverse channel, one end of the vertical channel A is connected to one end of the solenoid valve inlet channel, and the other end is connected to the transverse channel, and a vertical channel B is provided on the transverse channel that passes downward through the manifold; one end of the manifold outlet channel is connected to the solenoid valve outlet channel, and the other end is connected to the diaphragm cavity; the valve body is provided with a valve body inlet channel, the valve body inlet channel comprises a longitudinal channel and a vertical channel C, one end of the vertical channel C is connected to the longitudinal channel, and the other end is connected to the vertical channel B; the longitudinal channel One end is connected to the outside world, and the other end is connected to a pair of oblique channels, the other end of the oblique channel is connected to the lower part of the diaphragm cavity; the middle of the diaphragm cavity is provided with a valve body air outlet channel connected to the outside world, and the upper part of the diaphragm cavity is provided with a valve body exhaust channel connected to the outside world; the diaphragm assembly includes diaphragm A, connecting rod and diaphragm B in sequence; the diaphragm cavity includes a first cavity connected to the manifold outlet channel, a second cavity connected to the valve body outlet channel and a third cavity connected to the oblique channel in sequence. cavity; when the oxygen-generating valve is closed, the upper end of the A diaphragm abuts against the manifold, so as to block the communication between the manifold outlet channel and the first cavity, and a gap is left between the lower end of the A diaphragm and the second cavity, and the upper end of the B diaphragm abuts against the lower end of the second cavity, so as to block the communication between the second cavity and the third cavity; when the oxygen-generating valve is opened, the A diaphragm drives the diaphragm assembly downward under the action of air pressure, and the upper end of the B diaphragm is separated from the lower end of the second cavity, and the second cavity and the third cavity are connected.

[0008] Compared with the prior art, the high-reliability oxygen-generating valve of the present application has a gap between the lower end of diaphragm A and the second cavity. The diaphragm A of the diaphragm assembly does not need to be deformed, so that the diaphragm assembly can move downward, thereby enabling the oxygen-generating valve to work normally even in a lower air pressure environment.

[0009] As an optimization, in the aforementioned high-reliability oxygen-generating valve, the gap between the lower end of the A diaphragm and the second cavity is 0.5-1 mm. This gap size not only makes the internal structure of the oxygen-generating valve compact and stable, but also facilitates the movement of the diaphragm assembly.

[0010] As an optimization, a compression spring is installed between the diaphragm assembly and the manifold in the aforementioned high-reliability oxygen concentrator. This structure provides a certain amount of force when the oxygen concentrator valve opens and diaphragm A is subjected to air pressure, allowing the diaphragm assembly to move easily. This further reduces the starting air pressure of the oxygen concentrator valve, further expanding the applicability of the oxygen concentrator valve.

[0011] As an optimization, in the aforementioned high-reliability oxygen-generating valve, the upper and lower ends of the second cavity are tapered. This structure reduces the contact area between the second cavity and diaphragms A and B, thereby lowering the machining precision requirements for the end surfaces of the second cavity.

[0012] As an optimization, in the aforementioned high-reliability oxygen concentrator, the transverse channel is a cylindrical structure with one end extending through the manifold. A plug is provided near the end of the transverse channel near the manifold. This structure can be directly machined, is relatively easy to manufacture, and helps reduce production costs.

[0013] Furthermore, in the aforementioned high-reliability oxygen-generating valve, the blocking member is a steel ball that is interference-fitted with the transverse channel. The steel ball can be directly purchased and is easy to assemble.

[0014] As an optimization, in the aforementioned high-reliability oxygen-generating valve, adapters are provided at the connection points between the longitudinal channel of the valve body's air inlet passage and the outside world, as well as at the connection points between the valve body's air outlet passage and the outside world. This structure facilitates connection of the oxygen-generating valve to external components such as an air compressor and molecular sieves.

[0015] As an optimization, in the aforementioned high-reliability oxygen-generating valve, a sealing gasket is provided at the joint between the airway opening of the solenoid valve and the manifold. The provision of the sealing gasket can improve the sealing effect of the joint and prevent air leakage.

[0016] As an optimization, in the aforementioned high-reliability oxygen-generating valve, the manifold is provided with a set of threaded holes, and the solenoid valve is connected to the manifold by screws. This connection method is convenient for assembly and disassembly.

[0017] As an optimization, in the aforementioned high-reliability oxygen-generating valve, the valve seat is made of aluminum. Using this material makes the oxygen-generating valve have better oxidation resistance and corrosion resistance, is easy to process, has a longer service life, is overall lighter, and has a lower manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the high-reliability oxygen-generating valve in this application;

[0019] Figure 2 yes Figure 1 sectional view of ;

[0020] Figure 3 This is the structural diagram of the valve seat in this application Figure 1 ;

[0021] Figure 4 This is the structural diagram of the valve seat in this application Figure 2 ;

[0022] Figure 5 It is a top view of the valve seat with the adapter installed in this application;

[0023] Figure 6 yes Figure 5 Middle AA section;

[0024] Figure 7 yes Figure 5 Middle BB cross section;

[0025] Figure 8 yes Figure 5 Schematic diagram of the structure with the oxygen valve closed;

[0026] Figure 9 yes Figure 5 Mid-CC cross-section;

[0027] Figure 10 It is a structural diagram of the valve body in this application;

[0028] Figure 11 It is a structural schematic diagram of the diaphragm assembly in this application.

[0029] The marks in the accompanying drawings are: 1-valve seat, 11-manifold, 111-manifold air inlet channel, 1111-A vertical channel, 1112-transverse channel, 1113-B vertical channel, 112-manifold air outlet channel, 113-threaded hole, 12-valve body, 121-diaphragm cavity, 1211-first cavity, 1212-second cavity, 1213-third cavity, 122-valve body air inlet channel, 1221-longitudinal channel, 1222-C vertical channel, 1223-oblique channel, 123-valve body air outlet channel, 124-valve body exhaust channel, 13-valve cover; 2-solenoid valve, 21-solenoid valve air inlet channel, 22-solenoid valve air outlet channel; 3-diaphragm assembly, 31-A diaphragm, 32-connecting rod, 33-B diaphragm; 4-compression spring; 5-blocking piece; 6-adapter; 7-sealing gasket. DETAILED DESCRIPTION

[0030] The application will be further described below in conjunction with the accompanying drawings and examples, but not as a limitation to the application. The contents not described in detail in the following examples or not shown in detail in the drawings are all the technical common sense in the art.

[0031] Examples (see Figures 1-11 ):

[0032] The high-reliability oxygen production valve comprises a valve seat 1 and a pair of electromagnetic valves 2 arranged on the valve seat 1; the electromagnetic valves 2 are sequentially provided with electromagnetic valve air inlet channels 21 and electromagnetic valve air outlet channels 22; the valve seat 1 sequentially comprises a busbar plate 11, a valve body 12 and a valve cover 13, the top surface of the busbar plate 11 is in abutment with the electromagnetic valves 2; the inside of the valve body 12 is provided with a pair of diaphragm cavities 121 for installing a diaphragm assembly 3; the inside of the busbar plate 11 is provided with a busbar plate air inlet channel 111 and a pair of busbar plate air outlet channels 112; the busbar plate air inlet channel 111 comprises two A vertical channels 1111 and a horizontal channel 1112, one end of the A vertical channel 1111 is in communication with one end of the electromagnetic valve air inlet channel 21, the other end is in communication with the horizontal channel 1112, the horizontal channel 1112 is provided with a B vertical channel 1113 penetrating downward through the busbar plate 11; one end of the busbar plate air outlet channel 112 is in communication with the electromagnetic valve air outlet channel 22, the other end is in communication with the diaphragm cavity 121; the valve body 12 is provided with a valve body air inlet channel 122, the valve body air inlet channel 122 comprises a longitudinal channel 1221 and a C vertical channel 1222, one end of the C vertical channel 1222 is in communication with the longitudinal channel 1221, the other end is in communication with the B vertical channel 1113; one end of the longitudinal channel 1221 is in communication with the outside, the other end is connected with a pair of inclined channels 1223, the other end of the inclined channel 1223 is in communication with the lower part of the diaphragm cavity 121; the middle part of the diaphragm cavity 121 is provided with a valve body air outlet channel 123 in communication with the outside, the upper part of the diaphragm cavity 121 is provided with a valve body exhaust channel 124 in communication with the outside; the diaphragm assembly 3 sequentially comprises an A diaphragm 31, a connecting rod 32 and a B diaphragm 33; the diaphragm cavity 121 sequentially comprises a first cavity 1211 in communication with the busbar plate air outlet channel 112, a second cavity 1212 in communication with the valve body air outlet channel 123 and a third cavity 1213 in communication with the inclined channel 1223; when the oxygen production valve is closed, the upper end of the A diaphragm 31 is in abutment with the busbar plate 11, for blocking the communication between the busbar plate air outlet channel 112 and the first cavity 1211, the lower end of the A diaphragm 31 leaves a gap with the second cavity 1212, the upper end of the B diaphragm 33 is in abutment with the lower end of the second cavity 1212, for blocking the communication between the second cavity 1212 and the third cavity 1213; when the oxygen production valve is opened, the A diaphragm 31 drives the diaphragm assembly 3 to move downward under the action of air pressure, the upper end of the B diaphragm 33 is separated from the lower end of the second cavity 1212, the second cavity 1212 and the third cavity 1213 are in communication.

[0033] In the embodiment, the gap between the lower end of the A diaphragm 31 and the second cavity 1212 is 0.6 mm. The size of the gap makes the internal structure of the oxygen production valve compact and stable, and facilitates the movement of the diaphragm assembly 3.

[0034] In this embodiment, a compression spring 4 is provided between the diaphragm assembly 3 and the manifold 11. This structure provides a certain amount of force when the oxygen generator valve is opened and diaphragm A 31 is subjected to air pressure, allowing the diaphragm assembly 3 to move easily. This further reduces the air pressure required to activate the oxygen generator valve, thereby further expanding the applicability of the oxygen generator valve.

[0035] In this embodiment, the upper and lower ends of the second cavity 1212 are tapered structures. This structure reduces the contact area between the second cavity 1212 and the A diaphragm 31 and the B diaphragm 33, thereby reducing the machining accuracy requirements of the two end surfaces of the second cavity 1212.

[0036] In this embodiment, the transverse channel 1112 is a cylindrical structure with one end passing through the manifold 11. The transverse channel 1112 is provided with a blocking member 5 at the end surface thereof close to the manifold 11. This structure can be directly obtained by machining, has low manufacturing difficulty, and is conducive to reducing production costs.

[0037] In this embodiment, the blocking member 5 is a steel ball that is interference-fitted with the transverse channel 1112. The steel ball can be directly purchased and is easy to assemble.

[0038] In this embodiment, the connection between the longitudinal channel 1221 of the valve body air inlet channel 122 and the outside world and the connection between the valve body air outlet channel 123 and the outside world are both provided with adapters 6. This structure facilitates the connection of the oxygen valve with external air compressors, molecular sieves and other components.

[0039] In this embodiment, a sealing gasket 7 is provided at the joint between the airway opening of the solenoid valve 2 and the manifold 11. The provision of the sealing gasket 7 can improve the sealing effect of the joint and prevent air leakage.

[0040] In this embodiment, a group of threaded holes 113 are provided on the manifold 11, and the solenoid valve 2 is connected to the manifold 11 by screws. This connection method is convenient for assembly and disassembly.

[0041] In this embodiment, the valve seat 1 is made of aluminum. Using this material, the oxygen valve has good oxidation resistance and corrosion resistance, is easy to process, has a long service life, is relatively light overall, and has a low manufacturing cost.

[0042] When the high-reliability oxygen-generating valve of this embodiment is opened, the gas in the air compressor passes through the longitudinal channel 1221, the C vertical channel 1222, the B vertical channel 1113, the transverse channel 1112, the A vertical channel 1111, the solenoid valve air inlet channel 21, the solenoid valve air outlet channel 22 and the manifold air outlet channel 112 in sequence, and applies pressure to the A diaphragm 31 of the diaphragm assembly 3. The B diaphragm 33 is deformed under the combined action of the air pressure and the compression spring 4, causing the diaphragm assembly 3 to move downward, and the upper end of the B diaphragm 33 to move away from the second cavity 1212, thereby connecting the second cavity 1212 and the third cavity 1213; at this time, the gas passes through the longitudinal channel 1221, the oblique channel 1223, the third cavity 1213, the second cavity 1212, and the valve body air outlet channel 123 in sequence and enters the molecular sieve for oxygen production.

[0043] The above general description of the utility model and the description of its specific embodiments involved in this application should not be understood as limiting the technical solutions of the utility model. Based on the disclosure of this application, those skilled in the art may, without violating the constituent elements of the utility model involved, add, subtract or combine the disclosed technical features in the above general description and / or specific embodiments (including examples) to form other technical solutions within the scope of protection of this application.

Claims

1. A high-reliability oxygen-generating valve, comprising a valve seat (1) and a pair of solenoid valves (2) disposed on the valve seat (1); the solenoid valves (2) are sequentially provided with a solenoid valve air inlet channel (21) and a solenoid valve air outlet channel (22); Its characteristics are: The valve seat (1) comprises a manifold (11), a valve body (12) and a valve cover (13) in sequence. The top surface of the manifold (11) is in contact with the solenoid valve (2). A pair of diaphragm cavities (121) are provided inside the valve body (12) for installing the diaphragm assembly (3). A manifold air inlet channel (111) and a pair of manifold air outlet channels (112) are provided inside the manifold (11). The manifold air inlet channel (111) comprises two A vertical channels (112). 11) and a transverse channel (1112), one end of the A vertical channel (1111) is connected to one end of the electromagnetic valve air inlet channel (21), and the other end is connected to the transverse channel (1112), and the transverse channel (1112) is provided with a B vertical channel (1113) that passes through the manifold (11) downward; one end of the manifold outlet channel (112) is connected to the electromagnetic valve outlet channel (22), and the other end is connected to the diaphragm cavity (121); The valve body (12) is provided with a valve body air inlet channel (122), and the valve body air inlet channel (122) includes a longitudinal channel (1221) and a C vertical channel (1222), one end of the C vertical channel (1222) is connected to the longitudinal channel (1221), and the other end is connected to the B vertical channel (1113); one end of the longitudinal channel (1221) is connected to the outside world, and the other end is connected to a pair of oblique channels (1223), and the other end of the oblique channels (1223) is connected to the lower part of the diaphragm cavity (121); the middle of the diaphragm cavity (121) is provided with a valve body air outlet channel (123) connected to the outside world, and the upper part of the diaphragm cavity (121) is provided with a valve body exhaust channel (124) connected to the outside world; The diaphragm assembly (3) sequentially comprises an A diaphragm (31), a connecting rod (32), and a B diaphragm (33); the diaphragm cavity (121) sequentially comprises a first cavity (1211) connected to the manifold gas outlet channel (112), a second cavity (1212) connected to the valve body gas outlet channel (123), and a third cavity (1213) connected to the oblique channel (1223); When the oxygen-generating valve is closed, the upper end of the A diaphragm (31) abuts against the manifold (11), thereby blocking the communication between the manifold outlet passage (112) and the first cavity (1211); a gap is left between the lower end of the A diaphragm (31) and the second cavity (1212); and the upper end of the B diaphragm (33) abuts against the lower end of the second cavity (1212), thereby blocking the communication between the second cavity (1212) and the third cavity (1213); When the oxygen production valve is opened, the A diaphragm (31) drives the diaphragm assembly (3) downward under the action of air pressure, and the upper end of the B diaphragm (33) is separated from the lower end of the second cavity (1212), and the second cavity (1212) and the third cavity (1213) are connected.

2. The high-reliability oxygen-generating valve according to claim 1, characterized in that: The gap between the lower end of the A diaphragm (31) and the second cavity (1212) is 0.5-1 mm.

3. The high-reliability oxygen-generating valve according to claim 2, characterized in that: A compression spring (4) is provided between the diaphragm assembly (3) and the manifold (11).

4. The high-reliability oxygen-generating valve according to claim 3, characterized in that: The upper and lower ends of the second cavity (1212) are conical structures.

5. The high-reliability oxygen-generating valve according to claim 4, characterized in that: The transverse channel (1112) is a cylindrical structure with one end penetrating the busbar (11), and a blocking member (5) is provided at the end surface of the transverse channel (1112) close to the busbar (11).

6. The high-reliability oxygen-generating valve according to claim 5, characterized in that: The blocking member (5) is a steel ball that is interference-fitted with the transverse channel (1112).

7. The high-reliability oxygen-generating valve according to claim 6, characterized in that: A connecting joint (6) is provided at the connection point between the longitudinal channel (1221) of the valve body air inlet channel (122) and the outside world, and at the connection point between the valve body air outlet channel (123) and the outside world.

8. The high-reliability oxygen-generating valve according to any one of claims 1 to 7, characterized in that: A sealing gasket (7) is provided at the abutment point between the airway opening of the solenoid valve (2) and the manifold (11).

9. The high-reliability oxygen-generating valve according to claim 8, characterized in that: A group of threaded holes (113) are provided on the manifold (11), and the solenoid valve (2) is connected to the manifold (11) via screws.

10. The high-reliability oxygen-generating valve according to claim 9, characterized in that: The material of the valve seat (1) is aluminum.

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