Balanced structure and noise reduction structure of oxygen generation valve, oxygen generation valve and oxygen generation valve group

Abstract

The utility model discloses a balanced structure and a silencing structure of an oxygen generation valve, the oxygen generation valve and an oxygen generation valve group, and belongs to the technical field of oxygen generation valves. The balanced structure of the oxygen production valve comprises a valve body, a valve core, a valve rod and a valve rod, a valve cavity of the valve body comprises a first cavity body, a second cavity body and a third cavity body which have the same aperture to form a balanced structure, so that the valve body does not influence the starting performance and the response time of the coil assembly due to the change of air pressure; the noise reduction structure of the oxygen generation valve comprises a coil assembly, wherein a static iron core and a movable iron core are arranged in the coil assembly; a housing; the static iron core is in threaded connection with the housing, and noise generated by collision when the movable iron core and the static iron core are attracted is eliminated by adjusting the position of the static iron core. The oxygen production valve is provided with the balance type structure and / or the noise reduction structure. The oxygen production valve group comprises: a base provided with a gas channel; the plurality of mounting base bodies are integrated on the base, and the oxygen production valves are mounted in the mounting base bodies to form a valve group structure.

Description

Technical Field

[0001] The utility model belongs to the technical field of oxygen-generating valves, and specifically relates to a balanced structure of an oxygen-generating valve, a silencer structure of an oxygen-generating valve, an oxygen-generating valve with a balanced structure and / or a silencer structure, and an oxygen-generating valve group with a plurality of oxygen-generating valves. Background Art

[0002] Oxygen generator is a type of machine that produces oxygen. Its principle is to use air separation technology to extract oxygen from the air for home or medical use. Molecular sieve oxygen generator uses physical pressure swing adsorption oxygen production technology. Its oxygen production principle is mainly to use an air compressor to make oxygen and nitrogen in the air pass through a molecular sieve, and use the difference in the molecular sieve's adsorption capacity for oxygen and nitrogen in the air to separate oxygen and nitrogen, thereby obtaining high-concentration oxygen.

[0003] Among them, the compressor, oxygen-making valve and molecular sieve are the core components of the molecular sieve oxygen generator. The oxygen-making valve is provided with an air inlet, an air outlet and an exhaust port. When the air outlet is connected to the air inlet, when the high-pressure gas passes through the molecular sieve, the nitrogen will be adsorbed by the molecular sieve, thereby obtaining high-concentration oxygen. When the air outlet is connected to the exhaust port, the nitrogen adsorbed in the molecular sieve is discharged through the air outlet and the exhaust port in turn, so that the molecular sieve can be reused for a long time.

[0004] The current oxygen valve has the following problems:

[0005] 1. When the solenoid valve is started, the static iron core and the moving iron core collide and produce noise;

[0006] 2. When the solenoid valve is started and closed, the change in air pressure in the valve cavity of the valve body affects the starting performance and response time of the solenoid valve. Summary of the invention

[0007] The utility model aims at the above-mentioned problems existing in the prior art and proposes a balanced structure of an oxygen-generating valve which does not affect the starting performance and response time of a coil assembly, a silencer structure which eliminates the noise generated by the collision when a static iron core and a moving iron core are attracted, an oxygen-generating valve having the above-mentioned balanced structure and / or silencer structure, and an oxygen-generating valve group having a plurality of oxygen-generating valves.

[0008] The utility model can be realized through the following technical solutions:

[0009] A balanced structure of an oxygen-generating valve, comprising:

[0010] A valve body having an air inlet, an air outlet and an exhaust port;

[0011] A valve core is movably disposed in a valve cavity of the valve body, wherein the valve cavity of the valve body comprises a first cavity, a second cavity and a third cavity, wherein the apertures of the first cavity, the second cavity and the third cavity are the same;

[0012] When the valve core moves to the working position, the air inlet is connected to the air outlet and the air outlet is closed to the exhaust port. At this time, the third cavity is not pressurized and the air pressures of the first cavity and the second cavity are the same;

[0013] When the valve core moves to the exhaust position, the air outlet is connected to the exhaust port and the air inlet is closed to the air outlet. At this time, the first cavity is not pressurized and the air pressures of the second cavity and the third cavity are the same.

[0014] As a further improvement of the utility model, the valve core includes a first sealing portion, a second sealing portion and a third sealing portion, wherein:

[0015] The first sealing portion is located in the first cavity and is sealed and connected to the first cavity;

[0016] The third sealing portion is located in the third cavity and is sealed and connected to the third cavity;

[0017] The second sealing portion is located between the second cavity and the third cavity.

[0018] As a further improvement of the present invention, the valve port of the second cavity is an air outlet valve port, and the air inlet and the air outlet are connected or closed via the air outlet valve port.

[0019] As a further improvement of the present invention, the valve port of the third cavity is an exhaust valve port, and the air outlet and the exhaust port are connected or closed via the exhaust valve port.

[0020] As a further improvement of the present invention, through the movement of the valve core, the second sealing portion opens the air outlet valve port and closes the exhaust valve port, or the second sealing portion opens the exhaust valve port and closes the air outlet valve port.

[0021] A silencing structure for an oxygen-making valve, comprising:

[0022] The coil assembly has a static iron core and a moving iron core in its valve cavity, the static iron core and the moving iron core are split structures and there is a fixed gap between them;

[0023] a cover shell mounted on the coil assembly;

[0024] The static iron core is threadedly connected to the cover shell, and the fixed gap between the static iron core and the moving iron core is adjusted by rotating the static iron core to eliminate noise caused by collision when the moving iron core and the static iron core are attracted after the coil assembly is energized.

[0025] As a further improvement of the present invention, the static iron core can be directly connected to the housing by threads, or can be connected to the static iron core by threads by installing a fitting inside the housing.

[0026] An oxygen-generating valve having the above-mentioned balanced structure and / or the above-mentioned muffler structure, wherein:

[0027] The valve core is connected to the moving iron core or forms an integrated structure (it is okay to write it like this here, including both split and integrated situations), and the movement of the moving iron core is achieved by energizing and de-energizing the coil assembly, and drives the valve core to move synchronously.

[0028] An oxygen production valve group, comprising:

[0029] A base having a plurality of gas passages;

[0030] The number of the mounting bases is the same as the number of the gas channels, and the plurality of mounting bases are integrated on the base. The mounting base has an inner cavity and is used to mount the oxygen-generating valve.

[0031] As a further improvement of the present invention, a single group of gas channels comprises an air inlet channel, an air outlet channel and an exhaust channel which are respectively connected to the air inlet, the air outlet and the exhaust port of a single valve body.

[0032] Compared with the prior art, the utility model has the following beneficial effects:

[0033] 1. The apertures of the first cavity, the second cavity and the third cavity in the valve body are the same, forming a balanced structure, so that when the valve body is in the two states of air intake at the outlet and exhaust at the exhaust port, the starting performance and response time of the coil assembly will not be affected by the change of air pressure;

[0034] 2. The valve body with balanced structure can interchange the air inlet and the exhaust port without changing any configuration and achieve the effect of normally open and normally closed;

[0035] 3. The static iron core of the coil assembly is threadedly connected to the cover. The fixed gap between the static iron core and the moving iron core is adjusted by rotating the static iron core to eliminate the noise caused by collision when the moving iron core and the static iron core are attracted after the coil assembly is energized, thus achieving the purpose of silencing.

[0036] 4. Multiple oxygen-generating valves can be installed on the same base to form an oxygen-generating valve group. In this case, each oxygen-generating valve is arranged in parallel on the base. The valve group structure formed thereby can be directly connected to the oxygen concentrator. After the connection, since each oxygen-generating valve has a separate gas channel, the oxygen-generating valves do not interfere with each other and can be used separately.

[0037] 5. This structure of the oxygen-generating valve group is more convenient for the installation of multiple oxygen-generating valves, improves the convenience during installation, reduces the occupied space after installation, and is more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a cross-sectional view of the oxygen-generating valve group with a balanced structure and a muffler structure of the utility model;

[0039] Figure 2 It is a cross-sectional view of the oxygen-generating valve group with a balanced structure and a muffler structure of the utility model from another direction;

[0040] Figure 3 It is a structural schematic diagram of the oxygen production valve group of the utility model;

[0041] Figure 4 It is a structural schematic diagram of the bottom of the oxygen-making valve group of the utility model.

[0042] In the figure, 100, valve body; 110, air inlet; 120, air outlet; 130, exhaust port; 140, valve core; 141, first sealing part; 142, second sealing part; 143, third sealing part; 150, first cavity; 160, second cavity; 161, air outlet valve port; 170, third cavity; 171, exhaust valve port;

[0043] 200, coil assembly; 210, static iron core; 220, moving iron core; 230, cover; 240, matching part;

[0044] 300, base; 310, mounting base. DETAILED DESCRIPTION

[0045] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical method of the present invention, but the present invention is not limited to these embodiments.

[0046] like Figure 1-4 As shown, the utility model provides a balanced structure of an oxygen production valve, comprising:

[0047] The valve body 100 has an air inlet 110, an air outlet 120 and an exhaust port 130;

[0048] The valve core 140 is movably disposed in the valve cavity of the valve body 100. The valve cavity of the valve body 100 includes a first cavity 150, a second cavity 160 and a third cavity 170, wherein the apertures of the first cavity 150, the second cavity 160 and the third cavity 170 are the same;

[0049] When the valve core moves to the working position, the air inlet 110 is connected to the air outlet 120 and the air outlet 120 is closed to the exhaust port 130, the third cavity 170 is not pressurized, and the air pressure of the first cavity 150 and the second cavity 160 is the same. At this time, the valve body 100 is in working state and supplies air to the molecular sieve;

[0050] When the valve core moves to the exhaust position, when the air outlet 120 is connected to the exhaust port 130 and the air inlet 110 is closed to the air outlet 120, the first cavity 150 is not pressurized and the air pressures of the second cavity 160 and the third cavity 170 are the same. At this time, the valve body 100 is in the exhaust state.

[0051] It should be noted here that the valve body 100 needs to be connected to the coil assembly 200, and the movement of the valve core 140 is controlled by the on and off of the coil assembly 200. Because the apertures of the first cavity 150, the second cavity 160, and the third cavity 170 are the same, the starting performance and response time of the coil assembly 200 will not be affected by changes in air pressure when the air outlet 120 is in the two states of air intake and the exhaust port 130 is in the two states of exhaust.

[0052] In addition, the valve body 100 of the balanced structure can also interchange the air inlet 110 and the air outlet 130 to achieve a normally open and normally closed effect without changing any configuration.

[0053] Preferably, the valve core 140 includes a first sealing portion 141, a second sealing portion 142 and a third sealing portion 143, wherein:

[0054] The first sealing portion 141 is located in the first cavity 150 and is sealed and connected to the first cavity 150;

[0055] The third sealing portion 143 is located in the third cavity 170 and is sealed and connected to the third cavity 170;

[0056] The second sealing portion 142 is located between the second cavity 160 and the third cavity 170 .

[0057] The valve port of the second cavity 160 is an outlet valve port 161, and the air inlet 110 and the air outlet 120 are connected or closed via the outlet valve port 161;

[0058] The valve port of the third cavity 170 is an exhaust valve port 171 , and the gas outlet 120 and the exhaust port 130 are connected or closed via the exhaust valve port 171 .

[0059] Specifically, the movement of the valve core 140 causes the second sealing portion 142 to open the gas outlet valve port 161 and close the gas exhaust valve port 171. At this time, the gas inlet 110 is connected with the gas outlet 120, and the gas outlet 120 is closed with the gas exhaust port 130. The gas enters the molecular sieve from the gas outlet 120 to provide oxygen for the oxygen generator.

[0060] Or the second sealing portion 142 opens the exhaust valve port 171 and closes the outlet valve port 161 by moving the valve core 140. At this time, the outlet port 120 is connected to the exhaust port 130, and the nitrogen in the molecular sieve is discharged outward through the outlet port 120 and the exhaust port 130 in turn.

[0061] In addition, a first sealing seat and a second sealing seat are installed in the valve body 100 in this embodiment, and the first sealing seat and the second sealing seat both have through holes. The valve core 140 passes through the first sealing seat and the second sealing seat, and the through hole of the first sealing seat forms a first cavity 150, and the through hole of the second sealing seat forms a second cavity 160.

[0062] like Figure 1-2 As shown, the utility model also provides a muffler structure of an oxygen production valve, comprising:

[0063] The coil assembly 200 has a stationary iron core 210 and a moving iron core 220 in its valve cavity. The stationary iron core 210 and the moving iron core 220 are split structures with a fixed gap between them.

[0064] A cover 230 mounted on the coil assembly 200;

[0065] The static iron core 210 is threadedly connected to the cover shell 230. The fixed gap between the static iron core 210 and the moving iron core 220 is adjusted by rotating the static iron core 210 to eliminate the noise generated by collision when the moving iron core 220 and the static iron core 210 are attracted after the coil assembly 200 is energized, thereby achieving the purpose of silencing.

[0066] That is to say, by adjusting the position of the static iron core 210, it can be controlled to attract the moving iron core 220, and the moving iron core 220 moves to a preset position without colliding with the static iron core 210, thereby achieving the purpose of noise reduction without affecting the starting performance and response time of the coil assembly 200.

[0067] It should also be noted that a coil assembly is provided inside the coil assembly 200 so that the static iron core 210 and the moving iron core 220 can be attracted to each other after the coil assembly 200 is energized. Since the coil assembly is a common technical means, it will not be described in detail.

[0068] Preferably, the static iron core 210 can be directly threadedly connected to the cover shell 230, or the cover shell 230 can be threadedly connected to the static iron core 210 by installing a fitting 240 inside the cover shell 230.

[0069] like Figure 1-2 As shown, the utility model also provides an oxygen-generating valve having the above-mentioned balanced structure and / or the above-mentioned silencer structure, wherein the valve core 140 and the moving iron core 220 are interference-fitted or form an integrated structure, and the moving iron core 220 is moved by energizing and de-energizing the coil assembly 200, and drives the valve core 140 to move synchronously, so as to achieve the purpose of air intake at the air outlet 120 and air supply to the molecular sieve and exhaust at the exhaust port 130.

[0070] like Figure 1-4 As shown, the utility model also provides an oxygen production valve group, including:

[0071] A base 300 is provided with a plurality of gas channels;

[0072] The number of the mounting bases 310 is the same as the number of the gas channels, and the multiple mounting bases 310 are integrated on the base 300. The mounting base 310 has an inner cavity and is used to mount the above-mentioned oxygen-generating valve.

[0073] When the above-mentioned oxygen-generating valve is installed in the mounting base 310 to form an oxygen-generating valve group, the outer shell of the valve body 100 is the mounting base 310, and the number of mounting bases 310 arranged on the base 300 can be adjusted according to actual needs, thereby the required number of oxygen-generating valves can be integrated on the same base 300 to form an oxygen-generating valve group.

[0074] Preferably, a single group of gas channels has an air inlet channel, an air outlet channel and an exhaust channel respectively connected to the air inlet 110, the air outlet 120 and the exhaust port 130 of a single valve body 100, that is, each oxygen-making valve is arranged in parallel on the base 300, and the valve group structure thus formed can be directly connected to the oxygen concentrator. After the connection, since each oxygen-making valve has a separate gas channel, the oxygen-making valves do not interfere with each other and can be used separately.

[0075] In addition, this valve group structure is also easier to install the oxygen generator, improves the convenience during installation, reduces the occupied space after installation, and is easier to use.

[0076] The technical means disclosed in the scheme of the utility model are not limited to the technical means disclosed by the above technical means, but also include technical solutions composed of any combination of the above technical features. The above is a specific implementation method of the utility model. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

[0077] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0078] In addition, in the present invention, the descriptions of "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0079] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0080] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A balanced structure of an oxygen production valve, characterized in that: include: A valve body having an air inlet, an air outlet and an exhaust port; A valve core is movably disposed in a valve cavity of the valve body, wherein the valve cavity of the valve body comprises a first cavity, a second cavity and a third cavity, wherein the apertures of the first cavity, the second cavity and the third cavity are the same; When the valve core moves to the working position, the air inlet is connected to the air outlet and the air outlet is closed to the exhaust port. At this time, the third cavity is not pressurized and the air pressures of the first cavity and the second cavity are the same; When the valve core moves to the exhaust position, the air outlet is connected to the exhaust port and the air inlet is closed to the air outlet. At this time, the first cavity is not pressurized and the air pressures of the second cavity and the third cavity are the same.

2. The balanced structure of an oxygen production valve according to claim 1, characterized in that: The valve core includes a first sealing portion, a second sealing portion and a third sealing portion, wherein: The first sealing portion is located in the first cavity and is sealed and connected to the first cavity; The third sealing portion is located in the third cavity and is sealed and connected to the third cavity; The second sealing portion is located between the second cavity and the third cavity.

3. The balanced structure of an oxygen production valve according to claim 2, characterized in that: The valve port of the second cavity is an air outlet valve port, and the air inlet and the air outlet are connected or closed via the air outlet valve port.

4. The balanced structure of an oxygen production valve according to claim 3, characterized in that: The valve port of the third cavity is an exhaust valve port, and the air outlet and the exhaust port are connected or closed via the exhaust valve port.

5. The balanced structure of an oxygen production valve according to claim 4, characterized in that: Through the movement of the valve core, the second sealing portion opens the air outlet valve port and closes the exhaust valve port, or the second sealing portion opens the exhaust valve port and closes the air outlet valve port.

6. A silencing structure for an oxygen production valve, characterized in that: include: The coil assembly includes a static iron core and a moving iron core, wherein the static iron core and the moving iron core are split structures and a fixed gap exists between the two; a cover shell mounted on the coil assembly; The static iron core is threadedly connected to the cover shell, and the fixed gap between the static iron core and the moving iron core is adjusted by rotating the static iron core to eliminate noise caused by collision when the moving iron core and the static iron core are attracted after the coil assembly is energized.

7. The silencing structure of an oxygen production valve according to claim 6, characterized in that: The static iron core can be directly connected to the housing by threads, or can be connected to the static iron core by threads by installing a matching piece in the housing.

8. An oxygen production valve, characterized in that: It has a balanced structure as described in any one of claims 1 to 5 and a noise reduction structure as described in any one of claims 6 to 7, wherein: The valve core is connected to the moving iron core or forms an integrated structure. The moving iron core is moved by energizing and de-energizing the coil assembly, and the valve core is driven to move synchronously.

9. An oxygen production valve group, characterized in that: include: A base having a plurality of gas passages; The number of the mounting bases is the same as the number of the gas channels, and the plurality of the mounting bases are integrated on the base, the mounting bases have an inner cavity and are used to mount the oxygen-generating valve according to claim 8.

10. The oxygen production valve assembly according to claim 9, characterized in that: The single gas channel has an inlet channel, an outlet channel, and an exhaust channel respectively connected to the inlet port, the outlet port, and the exhaust port of the single valve body.

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