Breathing air supply valve and air supply device

Abstract

The utility model provides a breathing air supply valve and an air supply device, and belongs to the technical field of air supply. Comprising a valve body provided with a containing space, an air supply pipe and a breath sensing pipe are arranged on the valve body, an air control channel and an air supply channel are formed in the valve body, and the air control channel and the air supply channel communicate with an air outlet of a flow and pressure stabilizing assembly; the respiration sensing assembly is arranged in the containing space, when the respiration sensing pipe senses that the user inhales, the air control channel is opened, and when the respiration sensing pipe senses that the user stops inhaling, the air control channel is closed; the air supply on-off assembly is arranged in the containing space, after the air control channel is opened, the air supply channel is opened to supply air through the air supply pipe, and after the air control channel is closed, the air supply channel is closed to stop air supply through the air supply pipe; the flow and pressure stabilizing assembly is arranged in the containing space and used for adjusting the flow and pressure of gas entering the breathing gas supply valve. According to the scheme, the structure is simple, air supply is conducted only when an inspirator is in an inspiration state, air supply is stable, air waste can be reduced, and the air supply time is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of gas supply, and particularly relates to a breathing gas supply valve and a gas supply device. Background Art

[0002] In the prior art, in an oxygen-deficient environment such as on the plateau, it is necessary to supplement gas through a portable gas cylinder. However, in the prior art, usually a pressure reducing valve is used to reduce the high-pressure gas in the gas cylinder, and then the gas is continuously supplied through a pipeline. With this supply method, whether the inhaler is in the inhalation state or not, the gas is continuously supplied, and a large amount of gas will be wasted during this process, resulting in a greatly shortened inhalation time; or a manual pressing and jetting method is used for gas supply. Because the pressing and jetting requires the coordination of breathing and pressing actions, it is very difficult for oxygen-deficient people to control and effectively use, and it is not convenient enough. Summary of the Utility Model

[0003] The purpose of the embodiment of the utility model is to provide a breathing gas supply valve and a gas supply device to solve the problems that, regardless of whether the inhaler is in the inhalation state or not, the gas is continuously supplied through a pipeline, resulting in gas waste, or a manual pressing and jetting method is used for gas supply, which is very difficult for oxygen-deficient people to control and effectively use, and is not convenient enough.

[0004] To achieve the above purpose, the embodiment of the utility model provides a breathing gas supply valve, which comprises:

[0005] A valve body, in which a plurality of accommodating spaces are arranged. A gas supply pipe and a breathing sensing pipe are arranged on the valve body, and a gas control channel and a gas supply channel are opened in the valve body. The gas control channel and the gas supply channel are both communicated with the air outlet of a flow and pressure stabilizing component;

[0006] A breathing sensing component, which is arranged in the corresponding accommodating space in the valve body, and is used for generating a displacement to conduct the gas control channel when the user's inhalation is sensed through the breathing sensing pipe, and resetting to close the gas control channel when the user stops inhaling;

[0007] A gas supply on-off component, which is arranged in the corresponding accommodating space in the valve body, below the breathing sensing component, and is used for generating a displacement to conduct the gas supply channel to start supplying gas through the gas supply pipe after the gas control channel is conducted, and resetting to close the gas supply channel to stop supplying gas through the gas supply pipe after the gas control channel is closed;

[0008] A flow and pressure stabilizing component, which is arranged in the corresponding accommodating space in the valve body, below the gas supply on-off component. The air inlet of the flow and pressure stabilizing component is communicated with the air inlet of the breathing gas supply valve, and is used for adjusting the gas flow and gas pressure entering the breathing gas supply valve.

[0009] Optionally, the valve body includes:

[0010] A valve cover, a first valve body, a second valve body, and a valve seat arranged in sequence from top to bottom;

[0011] A first channel, a second channel, and a third channel are provided on the first valve body;

[0012] A fourth channel and a fifth channel are provided on the second valve body;

[0013] The first channel, the second channel, the third channel, and the fourth channel together constitute the air control channel;

[0014] The fifth channel serves as the air supply channel;

[0015] A first air inlet channel is provided on the valve seat, serving as the air inlet of the breathing air supply valve.

[0016] Optionally, the breathing sensing component includes:

[0017] A sensing diaphragm, arranged in the accommodation space between the valve cover and the first valve body, and covering the first channel; when the user inhales, a negative pressure is formed on the upper surface of the sensing diaphragm, causing the sensing diaphragm to generate an upward displacement to conduct the air control channel; when the user stops inhaling, the negative pressure on the upper surface of the sensing diaphragm disappears, causing the sensing diaphragm to reset and close the air control channel.

[0018] Optionally, the breathing sensing component further includes:

[0019] A first spring, arranged between the valve cover and the sensing diaphragm, for assisting the sensing diaphragm to reset when the user stops inhaling.

[0020] Optionally, the sensing diaphragm includes:

[0021] A plastic layer and a silica gel layer arranged on the upper surface of the plastic layer;

[0022] The Rockwell hardness range of the plastic layer is 80 - 110.

[0023] Optionally, the breathing sensing tube is arranged on the valve cover, and the tube orifice is communicated with the accommodation space between the valve cover and the first valve body, and is located above the sensing diaphragm.

[0024] Optionally, a flow limiting member is arranged in the fifth channel.

[0025] Optionally, the air supply on-off component includes:

[0026] The air supply diaphragm is arranged in the accommodating space between the first valve body and the second valve body, and covers the fifth channel; when the air control channel is opened, the air pressure on the upper surface of the air supply diaphragm decreases, causing the air supply diaphragm to move upward to open the air supply channel; when the air control channel is closed, the air pressure on the upper surface of the air supply diaphragm increases, and the air supply diaphragm resets under the action of pressure to close the air supply channel.

[0027] Optionally, the gas supply on-off component further includes:

[0028] The second spring is arranged between the air supply diaphragm and the second valve body, and is used to assist the air supply diaphragm to generate an upward displacement to open the air supply channel.

[0029] Optionally, the air supply pipe is arranged on the second valve body, the pipe mouth is communicated with the accommodating space between the first valve body and the second valve body, and is located below the air supply diaphragm.

[0030] Optionally, the current and voltage stabilizing component includes:

[0031] a valve core, slidably disposed in the accommodation space between the second valve body and the valve seat, the valve core being provided with a second air inlet passage, the large end of the valve core being connected to the inner wall of the second valve body via a sealing ring, the small end of the valve core being connected to the inner wall of the valve seat via a sealing ring, and the small end of the valve core being provided with a plug for blocking the first air inlet passage;

[0032] The third spring is arranged between the valve core and the valve seat.

[0033] On the other hand, the utility model provides an air supply device, the air supply device comprising:

[0034] The above-mentioned breathing air supply valve;

[0035] A gas cylinder is used to store gas, and the breathing gas supply valve is arranged on the gas cylinder.

[0036] Optionally, the air supply device further comprises:

[0037] An inhalation mask, wherein two through holes are arranged on the inhalation mask, the inhalation mask has a concave accommodating space, and the inhalation mask is detachably arranged on the breathing air supply valve;

[0038] The inhalation mask is arranged on the breathing air supply valve so that the breathing air supply valve is located in the accommodation space of the inhalation mask;

[0039] When the inhalation mask is removed from the breathing air supply valve, the air supply pipe and the breathing sensing tube can be inserted into the corresponding through holes on the inhalation mask, so that the ends of the air supply pipe and the breathing sensing tube are located in the accommodating space of the inhalation mask to perform air supply operations.

[0040] Optionally, an external thread and at least one limiting protrusion are provided on the outer wall of the bottom end of the valve seat;

[0041] An installation seat is fixedly arranged on the gas cylinder, and an internal thread and at least one limiting groove are arranged on the inner wall of the installation seat;

[0042] The breathing air supply valve is rotatably connected to the installation seat. When the breathing air supply valve rotates relative to the installation seat to a first preset stroke, the external thread engages with the corresponding internal thread, and the limiting protrusion engages with the corresponding limiting groove to realize the fastening connection between the breathing air supply valve and the installation seat.

[0043] Optionally, at least one first tooth is provided on the outer wall of the valve seat;

[0044] A plurality of second teeth are arranged at intervals on the outer wall of the installation seat;

[0045] After the breathing air supply valve rotates relative to the installation seat by more than a second preset stroke, the first tooth touches the corresponding second tooth to generate a prompt sound.

[0046] The overall structure of the breathing air supply valve in this technical solution is simple and easy to use. It supplies air only when the inhaler is in the inhalation state, stops supplying air when the inhaler stops inhaling, and the gas flow is stable during the air supply process, which can effectively reduce gas waste and increase the air supply time.

[0047] Other features and advantages of the embodiments of the present invention will be described in detail in the subsequent specific implementation part. Brief Description of the Drawings

[0048] The drawings are used to provide a further understanding of the embodiments of the present invention, and constitute a part of the specification. They are used together with the following specific implementation to explain the embodiments of the present invention, but do not constitute a limitation to the embodiments of the present invention. In the drawings:

[0049] Figure 1 is the first cross-sectional structure schematic diagram of the breathing air supply valve provided by the present invention;

[0050] Figure 2 is the second cross-sectional structure schematic diagram of the breathing air supply valve provided by the present invention;

[0051] Figure 3 is the structure schematic diagram of the air supply device provided by the present invention;

[0052] Figure 4 is the cross-sectional structure schematic diagram when the first valve seat is connected to the installation seat provided by the present invention;

[0053] Figure 5 It is a schematic cross-sectional structure diagram when the second valve seat is connected to the mounting seat provided by the present utility model;

[0054] Figure 6 It is a schematic diagram of the usage process of the air supply device provided by the present utility model.

[0055] Explanation of the reference numerals in the drawings

[0056] 1 - Breathing air supply valve; 2 - Gas cylinder; 3 - Inspiratory mask;

[0057] 11 - Valve body; 12 - Air supply pipe; 13 - Breathing sensing pipe;

[0058] 14 - Breathing sensing component; 15 - Air supply on-off component; 16 - Flow and pressure stabilizing component;

[0059] 21 - Mounting seat; 101 - First channel; 102 - Second channel;

[0060] 103 - Third channel; 104 - Fourth channel; 105 - Fifth channel;

[0061] 106 - First air intake channel; 107 - Flow limiting part; 108 - Second air intake channel;

[0062] 111 - Valve cover; 112 - First valve body; 113 - Second valve body;

[0063] 114 - Valve seat; 141 - Inductive diaphragm; 142 - First spring;

[0064] 151 - Air supply diaphragm; 152 - Second spring; 161 - Valve core;

[0065] 162 - First sealing ring; 163 - Second sealing ring; 164 - Plug;

[0066] 165 - Third spring; 211 - Internal thread; 212 - Limiting groove;

[0067] 213 - Second engaging tooth; 1141 - External thread; 1142 - Limiting protrusion;

[0068] 1143 - First engaging tooth. Detailed implementation manners

[0069] The following will detail the specific implementation manners of the embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the specific implementation manners described herein are only used to illustrate and explain the embodiments of the present utility model, and are not used to limit the embodiments of the present utility model.

[0070] In the embodiments of the present utility model, unless otherwise stated, the orientation terms such as "upper", "lower", "left", and "right" generally refer to the orientation or positional relationship based on the drawings, or the orientation or positional relationship in which the products of the present utility model are usually placed during use.

[0071] The terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0072] The terms "parallel", "perpendicular", etc. do not mean that the components are required to be absolutely parallel or perpendicular, but can be slightly inclined. For example, "parallel" only means that its direction is more parallel relative to "perpendicular", and does not mean that the structure must be completely parallel, but can be slightly inclined.

[0073] The terms "horizontal", "vertical", "hanging", etc. do not mean that the components are required to be absolutely horizontal, vertical or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0074] In addition, terms such as "substantially", "basically", etc. are intended to indicate that the relevant content does not require absolute precision, but can have a certain deviation. For example: "substantially equal" does not only mean absolute equality. Since it is difficult to achieve absolute "equality" during actual production and operation processes, there is generally a certain deviation. Therefore, in addition to absolute equality, "substantially equal" also includes the above-mentioned situations with a certain deviation. Taking this as an example, in other cases, unless otherwise specified, terms such as "substantially" and "basically" have meanings similar to the above.

[0075] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0076] Figure 1 is the first cross-sectional structure schematic diagram of the breathing air supply valve provided by the present utility model; Figure 2 is the second cross-sectional structure schematic diagram of the breathing air supply valve provided by the present utility model; Figure 3 is the structure schematic diagram of the air supply device provided by the present utility model; Figure 4 is the cross-sectional structure schematic diagram when the first valve seat is connected to the mounting seat provided by the present utility model; Figure 5It is a schematic cross-sectional structure diagram when the second valve seat is connected to the mounting seat provided by the present utility model; Figure 6 It is a schematic diagram of the usage process of the air supply device provided by the present utility model.

[0077] As Figure 1-2 shown, this embodiment provides a breathing air supply valve. The breathing air supply valve can supply air such as oxygen, other types of gases, or a mixed gas of oxygen and other types of gases. The breathing air supply valve includes:

[0078] A valve body 11, in which a plurality of accommodating spaces are provided. A gas supply pipe 12 and a breathing sensing pipe 13 are provided on the valve body 11. A gas control channel and a gas supply channel are opened in the valve body 11, and both the gas control channel and the gas supply channel are communicated with the air outlet of the flow and pressure stabilizing assembly 16;

[0079] A breathing sensing assembly 14, which is arranged in the corresponding accommodating space in the valve body 11, is used to generate a displacement to conduct the gas control channel when the user's inhalation is sensed through the breathing sensing pipe 13, and to reset to close the gas control channel when the user stops inhaling and is sensed through the breathing sensing pipe 13;

[0080] A gas supply on-off assembly 15, which is arranged in the corresponding accommodating space in the valve body 11, is located below the breathing sensing assembly 14, and is used to generate a displacement to conduct the gas supply channel to start supplying gas through the gas supply pipe 12 after the gas control channel is conducted, and to reset to close the gas supply channel to stop supplying gas through the gas supply pipe 12 after the gas control channel is closed;

[0081] A flow and pressure stabilizing assembly 16, which is arranged in the corresponding accommodating space in the valve body 11, is located below the gas supply on-off assembly 15. The air inlet of the flow and pressure stabilizing assembly 16 is communicated with the air inlet of the breathing air supply valve 1, and is used to adjust the gas flow rate and gas pressure entering the breathing air supply valve 1.

[0082] Specifically, in this embodiment, a gas supply pipe 12 and a breathing sensing pipe 13 are provided on the valve body 11. The fixed ends of the gas supply pipe 12 and the breathing sensing pipe 13 are located inside the valve body 11, and the connecting ends of the gas supply pipe 12 and the breathing sensing pipe 13 pass through the valve body 11 and are located outside the valve body 11. In order to achieve the function of supplying gas only when the inhaler is in the inhalation state and not supplying gas when in the stopped inhalation state, the valve body 11 is provided with a plurality of accommodating spaces, and a gas control channel and a gas supply channel are correspondingly opened in the valve body 11;

[0083] To control the air control passage, a breathing sensing component 14 is provided. The breathing sensing component 14 is arranged in a corresponding accommodation space and is used to generate a displacement to conduct the air control passage when the user's inhalation is sensed through the breathing sensing tube 13, and reset to close the air control passage when the user stops inhaling as sensed through the breathing sensing tube 13;

[0084] To control the air supply passage, an air supply on-off component 15 is provided. It is arranged in a corresponding accommodation space and is located below the breathing sensing component 14. It is used to generate a displacement to conduct the air supply passage after the air control passage is conducted, start supplying air through the air supply tube 12, and reset to close the air supply passage and stop supplying air through the air supply tube 12 after the air control passage is closed;

[0085] And since, in order to store as much gas as possible, the gas is usually stored after being compressed, the gas provided by the gas source is generally compressed gas. Therefore, in this embodiment, a flow and pressure stabilizing component 16 is provided to regulate the gas flow rate and gas pressure entering the breathing air supply valve 1, so that the gas pressure and flow rate are relatively stable. The flow and pressure stabilizing component 16 is arranged in a corresponding accommodation space and is located below the air supply on-off component 15. The air inlet of the flow and pressure stabilizing component 16 is communicated with the air inlet of the breathing air supply valve 1, and both the air control passage and the air supply passage are communicated with the air outlet of the flow and pressure stabilizing component 16.

[0086] Further, as Figure 1-2 shown, the valve body 11 includes:

[0087] a valve cover 111, a first valve body 112, a second valve body 113, and a valve seat 114 arranged in sequence from top to bottom;

[0088] a first passage 101, a second passage 102, and a third passage 103 are formed on the first valve body 112;

[0089] a fourth passage 104 and a fifth passage 105 are formed on the second valve body 113;

[0090] the first passage 101, the second passage 102, the third passage 103, and the fourth passage 104 together constitute the air control passage;

[0091] the fifth passage 105 serves as the air supply passage;

[0092] a first air inlet passage 106 is formed on the valve seat 114, serving as the air inlet of the breathing air supply valve 1.

[0093] Specifically, in this embodiment, the valve body 11 is successively provided with a valve cover 111, a first valve body 112, a second valve body 113, and a valve seat 114 from top to bottom. In this way, the manufacturing and assembly costs can be greatly reduced, thereby significantly reducing the usage cost of the breathing air supply valve 1. The air control channel and the air supply channel are controlled relatively independently, thus ensuring the control accuracy.

[0094] Further, as Figure 1-2 shown, the breathing sensing assembly 14 includes:

[0095] A sensing diaphragm 141, disposed in the accommodation space between the valve cover 111 and the first valve body 112, and covering the first channel 101. A first spring 142 is disposed between the valve cover 111 and the sensing diaphragm 141; when the user inhales, a negative pressure is formed on the upper surface of the sensing diaphragm 141, causing the sensing diaphragm 141 to generate an upward displacement to conduct the air control channel; when the user stops inhaling, the negative pressure on the upper surface of the sensing diaphragm 141 disappears, causing the sensing diaphragm 141 to reset and close the air control channel.

[0096] Specifically, in this embodiment, the sensing diaphragm 141 is disposed in the accommodation space between the valve cover 111 and the first valve body 112, and when there is no air supply, and during use, but when the inhaler is in a state of stopping inhalation, the sensing diaphragm 141 blocks the first channel 101. When the user inhales, the gas in the breathing sensing tube 13 moves outwards. At this time, the gas on the upper surface of the sensing diaphragm 141 will move, forming a negative pressure, thereby generating an upward force, causing the sensing diaphragm 141 to move upwards, opening the first channel 101, and thus conducting the air control channel; when the user stops inhaling, the gas in the breathing sensing tube 13 moves inwards, the negative pressure disappears, and the upward force disappears synchronously. The sensing diaphragm 141 moves downwards to reset, closing the first channel 101 and closing the air control channel.

[0097] In another embodiment, a first spring 142 is disposed between the valve cover 111 and the sensing diaphragm 141 to assist the sensing diaphragm 141 to quickly reset when the user stops inhaling. When there is no air supply, and during use, but when the inhaler is in a state of stopping inhalation, the first spring 142 is in a slightly compressed state. At this time, the first spring 142 generates a small acting force; when the user inhales, the gas on the upper surface of the sensing diaphragm 141 will move, forming a negative pressure, and the negative pressure is sufficient to cause the sensing diaphragm 141 to generate an upward displacement and compress the first spring 142 into a compressed state. When the user stops inhaling, the negative pressure on the upper surface of the sensing diaphragm 141 disappears, and the negative pressure also disappears. At this time, the first spring 142 generates an elastic force to cause the sensing diaphragm 141 to reset and quickly close the air control channel.

[0098] Further, the sensing diaphragm 141 includes:

[0099] A plastic layer, and a silicone layer disposed on an upper surface of the plastic layer;

[0100] The Rockwell hardness of the plastic layer is in the range of 80-110.

[0101] Preferably, in this embodiment, the plastic layer can be made of materials such as PVC or PC, and the Rockwell hardness range of the plastic layer is set to 80-110HRC, and the thickness range is between 0.05 and 0.4mm, to ensure that it has the ability to deform after being wrapped by the silicone layer and to ensure air tightness, so as to open or close the first channel 101.

[0102] Furthermore, if Figure 1-2 As shown, the breathing sensing tube 13 is arranged on the valve cover 111 , the tube mouth is communicated with the accommodating space between the valve cover 111 and the first valve body 112 , and is located above the sensing diaphragm 141 .

[0103] Specifically, in this embodiment, the breathing sensing tube 13 is disposed on the valve cover 111 and is located above the sensing diaphragm 141 in this manner, so that the effect of negative pressure generation above the sensing diaphragm 141 can be ensured.

[0104] Furthermore, if Figure 1 As shown, a flow limiting member 107 is disposed in the fifth channel 105 .

[0105] Specifically, in this embodiment, the flow limiter 107 disposed in the fifth channel 105 is an annular structure, and a small hole is disposed in the middle thereof for gas to pass through. When the gas volume and pressure value of the gas source are already low, the flow limiter 107 can limit the maximum flow rate of the gas, thereby making the gas output more stable.

[0106] Furthermore, if Figure 1-2 As shown, the air supply on-off assembly 15 includes:

[0107] The air supply diaphragm 151 is arranged in the accommodating space between the first valve body 112 and the second valve body 113, and covers the fifth channel 105. A second spring 152 is arranged between the air supply diaphragm 151 and the second valve body 113. When the air control channel is opened, the air pressure on the upper surface of the air supply diaphragm 151 decreases, causing the air supply diaphragm 151 to move upward, thereby opening the air supply channel. When the air control channel is closed, the air pressure on the upper surface of the air supply diaphragm 151 increases, and the air supply diaphragm 151 is reset under the action of pressure to close the air supply channel.

[0108] Specifically, in this embodiment, when there is no gas supply and during use, but when the inhaler is in a state of stopping inhalation, the sensing diaphragm 141 blocks the first channel 101. Since both the air control channel and the gas supply channel are connected to the air outlet of the flow stabilizing and pressure regulating component 16, at this time, the air pressure value on the upper surface of the gas supply diaphragm 151 is greater than the air pressure value on the lower surface (air pressure value). Therefore, the gas supply diaphragm 151 blocks the fifth channel 105 under the action of the pressure, making the gas supply channel in a closed state. When the pressure is too high, the gas supply diaphragm 151 automatically ruptures, thus realizing the release of the safety pressure and avoiding accidents.

[0109] When the user inhales, the gas in the breathing sensing tube 13 moves outwards. At this time, gas movement will occur on the upper surface of the sensing diaphragm 141, creating a negative pressure and generating an upward force that counteracts the elastic force of the first spring 142, causing the sensing diaphragm 141 to move upwards and open the first channel 101, thereby making the air control channel conductive. At this time, the gas in the air control channel flows outwards, making the air pressure on the upper surface of the gas supply diaphragm 151 less than the air pressure on the lower surface. The gas supply diaphragm 151 generates an upward displacement and opens the fifth channel 105, thereby making the gas supply channel in a conductive state, and gas can be supplied through the gas supply pipe 12.

[0110] In another embodiment, a second spring 152 is provided between the gas supply diaphragm 151 and the second valve body 113. When the user stops inhaling, it assists the gas supply diaphragm 151 to move upwards quickly to conduct the gas supply channel. When there is no gas supply and during use, but when the inhaler is in a state of stopping inhalation, the second spring 152 is in a compressed state and generates an elastic force. However, since the air pressure value on the upper surface of the gas supply diaphragm 151 is greater than the air pressure value on the lower surface, the elastic force generated by the second spring 152 is not sufficient to counteract the downward air pressure, and the sensing diaphragm 141 will not generate an upward displacement. When the user starts to inhale, the gas in the air control channel flows outwards, making the air pressure on the upper surface of the gas supply diaphragm 151 less than the air pressure on the lower surface. At this time, the first spring 142 generates an elastic force that enables the sensing diaphragm 141 to move upwards quickly, thereby quickly opening the gas supply channel.

[0111] In addition, since the gas supply diaphragm 151 is an elastic diaphragm with sealing performance, excessive deformation will cause self-destruction. Therefore, the second spring 152 provided is also used to balance the excessive deformation generated by the gas supply diaphragm 151 when the gas supply diaphragm 151 is under different pressures, so that the deformation amount of the gas supply diaphragm 151 is within a set range, in order to protect the gas supply diaphragm 151 and improve its service life.

[0112] When the air supply diaphragm 151 covers the fifth channel 105 , the internal accommodation space where the air supply diaphragm 151 is located is divided into a closed upper cavity and a lower cavity by the air supply diaphragm 151 , the air supply pipe 12 is interconnected with the lower cavity, and the upper cavity is interconnected with the first channel 101 and the second channel 102 .

[0113] Furthermore, the ratio of the diameter of the air supply membrane 151 to the inner diameter of the first channel 101 is 20:1-80:1.

[0114] Preferably, in this embodiment, the ratio of the diameter of the air supply diaphragm 151 to the inner diameter of the first channel 101 is set to 20:1-80:1, forming an air cavity torque structure, amplifying the force generated by breathing induction by means of a compressed cross-sectional area, thereby achieving effective displacement of the air supply diaphragm 151 under negative pressure.

[0115] Furthermore, the air supply pipe 12 is disposed on the second valve body 113 , the pipe opening is communicated with the accommodation space between the first valve body 112 and the second valve body 113 , and is located below the air supply diaphragm 151 .

[0116] Specifically, in this embodiment, the air supply pipe 12 is disposed on the second valve body 113 and below the air supply diaphragm 151 , which can ensure that after the air supply channel is opened, the air supply pipe 12 can provide stable air supply.

[0117] Furthermore, if Figure 1-2 As shown, the current and voltage stabilizing component 16 includes:

[0118] The valve core 161 is slidably disposed in the accommodation space between the second valve body 113 and the valve seat 114. The second air inlet passage 108 is disposed on the valve core 161. The large end of the valve core 161 is connected to the inner wall of the second valve body 113 through a first sealing ring 162. The small end of the valve core 161 is connected to the inner wall of the valve seat 114 through a second sealing ring 163. The small end of the valve core 161 is provided with a plug 164 for blocking the first air inlet passage.

[0119] The third spring 165 is disposed between the valve core 161 and the valve seat 114 .

[0120] Specifically, in this embodiment, the valve core 161 includes a large end and a small end, and the large end of the valve core 161 is located above the small end of the valve core 161. The large end of the valve core 161 is connected to the inner wall of the second valve body 113 through a first sealing ring 162, and the small end of the valve core 161 is connected to the inner wall of the valve seat 114 through a second sealing ring 163, so as to ensure that there is no air leakage or ventilation between the large end and the small end. The gas can only move through the second air inlet channel 108, so that a large cavity is formed between the large end of the valve core 161 and the second valve body 113, and a small cavity is formed between the small end of the valve core 161 and the valve seat 114. In order to control the pressure through the valve core 161, a plug 164 for blocking the first air inlet channel 106 is provided at the end of the small end of the valve core 161. When the plug 164 blocks the first air inlet channel 106, the gas cannot flow in. When the plug 164 opens the first air inlet channel 106, the gas flows in.

[0121] More specifically, in this embodiment, the pressure of each part is controlled by the area ratio of the large end to the small end of the valve core 161. Among them, the product of pressure and area is force. The forces at both ends of the valve core 161 are the same, but the pressures are different due to different areas. Under different pressures, the valve core 161 will move. The area of the small end of the valve core 161 is small, but the pressure is high. The area of the large end of the valve core 161 is large, but the pressure is low. When the forces on both sides are inconsistent, the plug at the small end of the valve core 161 blocks the first air inlet channel 106 to prevent the gas from flowing out, and at this time, the pressure balance is achieved. When the gas is sucked away, the pressure at the large end of the valve core 161 decreases, and the valve core 161 moves towards the large end. At this time, the high-pressure gas at the plug 164 flows out, and the missing gas is supplemented to the large end of the valve core 161 through the second air inlet channel 108 to make the pressure reach balance again. Thus, by repeatedly opening and closing the plug 164 and the first air inlet channel 106, the pressure control is realized to ensure the constancy of the pressure.

[0122] Among them, the provided third spring 165 can assist in pushing the valve core 161 towards the large-area end when the gas pressure of the gas source decreases, reducing the pressure fluctuation caused by the decrease of the gas source pressure, so that the pressure remains stable. The valve core 161 can adopt a T-shaped structure, and the second air inlet channel 108 adopts an inverted T-shaped hole.

[0123] Further, the ratio of the length to the inner diameter of the air supply pipe 12 is 5:1 - 30:1.

[0124] Specifically, in this embodiment, the ratio of the length to the inner diameter of the air supply pipe 12 is set to 5:1 - 30:1, so that when the air is supplied through the air supply pipe 12, the gas flow will generate an airflow feedback sound to prompt the user that the gas has been inhaled.

[0125] As Figure 3 shown, this embodiment also provides a gas supply device, and the gas supply device includes:

[0126] The above-mentioned breathing air supply valve 1;

[0127] An air cylinder 2 for storing gas, and the breathing air supply valve 1 is arranged on the air cylinder 2.

[0128] Specifically, in this embodiment, in addition to being installed on the air cylinder 2, the breathing air supply valve 1 can also be connected to the air outlet of the air cylinder 2 through a gas transmission pipeline to achieve long-distance gas transmission. For example, the air cylinder 2 is placed in a gas backpack, and then the air inlet of the breathing air supply valve 1 is connected to the air outlet of the air cylinder 2 through a gas transmission pipeline. By adopting this method, the gas storage capacity can be further increased and the air supply duration can be improved. The air cylinder 2 stores compressed oxygen, other types of gas, or a mixed gas of oxygen and other types of gas.

[0129] Furthermore, the air supply device further includes:

[0130] An inhalation mask 3, on which there are two through holes 31, the inhalation mask 3 has a concave accommodation space, and the inhalation mask 3 is detachably arranged on the breathing air supply valve 1;

[0131] When the inhalation mask 3 is arranged on the breathing air supply valve 1, the inhalation mask 3 is arranged on the breathing air supply valve 1, and the breathing air supply valve 1 is located in the accommodation space of the inhalation mask 3;

[0132] When the inhalation mask 3 is detached from the breathing air supply valve 1, the air supply pipe 12 and the breathing sensing pipe 13 can be inserted into the corresponding through holes 31, and the ends of the air supply pipe 12 and the breathing sensing pipe 13 are located in the accommodation space of the inhalation mask 3 to perform an air supply operation.

[0133] Specifically, the inhalation mask 3 can adopt an arc-shaped structure, which can match the facial features of most people. And, in order to ensure the comfort during the inhalation process, the inhalation mask 3 is made of rubber material or plastic material. And, for the convenience of installation, there are two through holes 31 on the convex surface of the inhalation mask 3. When the air supply device is not used for air supply, the inhalation mask 3 is inserted on the breathing air supply valve 1, so that the breathing air supply valve 1 is located in the accommodation space of the inhalation mask 3 to protect the breathing air supply valve 1 and achieve dust prevention; when the air supply device is used for air supply, the air supply pipe 12 and the breathing sensing pipe 13 are inserted into the corresponding through holes 31, and the ends of the air supply pipe 12 and the breathing sensing pipe 13 are located in the accommodation space of the inhalation mask 3, and the inhalation mask 3 is covered on the face, then inhalation can be achieved. The steps of installing the inhalation mask 3 on the breathing air supply valve 1 and connecting the air path between the air cylinder 2 and the breathing air supply valve 1 are as Figure 6 shown.

[0134] Furthermore, asFigure 4-5 As shown, an external thread 1141 and at least one limiting protrusion 1142 are provided on the outer wall of the bottom end of the valve seat 114;

[0135] An installation seat 21 is fixedly provided on the gas cylinder 2, and an internal thread 211 and at least one limiting groove 212 are provided on the inner wall of the installation seat 21;

[0136] The breathing air supply valve 1 is rotatably connected to the installation seat 21. When the breathing air supply valve 1 rotates relative to the installation seat 21 to a first preset stroke, the external thread 1141 engages with the corresponding internal thread 211, and the limiting protrusion 1142 engages with the corresponding limiting groove 212 to realize the fastening connection between the breathing air supply valve and the installation seat 21.

[0137] Specifically, in this embodiment, the breathing air supply valve 1 and the gas cylinder 2 can be transported separately and assembled during use, or can be transported after being connected as a whole.

[0138] When transported after being connected as a whole, there may be extrusion and trampling during transportation, resulting in air leakage. Therefore, by providing an external thread 1141 and at least one limiting protrusion 1142 on the outer wall of the bottom end of the valve seat 114, and the external thread 1141 is arranged below the limiting protrusion 1142, an internal thread 211 and at least one limiting groove 212 (in this embodiment, the limiting groove 212 includes a first limiting groove and a second limiting groove arranged in sequence from top to bottom) are provided on the inner wall of the installation seat 21, and the internal thread 211 is arranged below the limiting groove 212. Among them, the internal thread 211 matches the external thread 1141, and the limiting protrusion 1142 matches the corresponding limiting groove 212. When the bottom end of the valve seat 114 is rotated into the installation seat 21, when the valve seat 114 just enters the stroke and reaches the first preset stroke, the external thread 1141 engages with the corresponding internal thread 211 (only the external thread 1141 at the bottom end and the internal thread 211 at the top end engage with each other), and the limiting protrusion 1142 engages with the corresponding limiting groove 212 (the first limiting groove). With the double-layer structure of the external thread 1141 and the internal thread 211 and the limiting protrusion 1142 and the limiting groove 212, the pressure bearing after being extruded and trampled is realized, and the occurrence of air leakage is reduced as much as possible.

[0139] In another embodiment, the internal thread 211 and the external thread 1141 can adopt conventional threads, and only need to be rotated in the reverse direction to be unscrewed again; they can also be made into one-way threads, which can only be opened and cannot be closed.

[0140] Furthermore, as Figure 3 shown, at least one first tooth 1143 is provided on the outer wall of the valve seat 114;

[0141] A plurality of second teeth 213 are arranged at intervals on the outer wall of the mounting base 21;

[0142] After the breathing air supply valve 1 rotates relative to the mounting base 21 by more than a second preset stroke, the first tooth 1143 and the corresponding second tooth 213 touch each other, generating a prompt sound.

[0143] Specifically, in this embodiment, for example, when a one-way thread is used, since it can only rotate in one direction, the user cannot accurately determine whether the rotation is in place. Therefore, at least one first tooth 1143 is provided on the outer wall of the valve seat 114, and a plurality of second teeth 213 are arranged at intervals on the outer wall of the mounting base 21. After the breathing air supply valve 1 rotates relative to the mounting base 21 by more than a second preset stroke (at this time, the air path has been connected), the first tooth 1143 and the corresponding second tooth 213 will touch each other, thereby generating a prompt sound to indicate that the air path between the gas cylinder 2 and the breathing air supply valve 1 has been connected. At this time, inhalation can be performed through the inhalation mask 3. At this time, the external thread 1141 and the corresponding internal thread 211 are engaged with each other (the external thread 1141 and the internal thread 211 are all engaged with each other), and the limit protrusion 1142 and the corresponding limit groove 212 (the second limit groove 212) are engaged with each other to realize the firm connection between the breathing air supply valve and the mounting base 21. When a plurality of first teeth 1143 are provided, the first teeth 1143 are arranged at intervals.

[0144] More specifically, by changing the sizes and shapes of the first tooth 1143 and the second tooth 213, the timbre of the prompt sound can be changed.

[0145] Further, the gas pressure value in the gas cylinder 2 is 0 - 1000 kPa.

[0146] Specifically, the gas cylinder 2 is used to store gas, and the gas pressure in the gas cylinder 2 can be 0 - 1000 kPa, thereby increasing the gas storage capacity in a single gas cylinder 2.

[0147] The optional embodiments of the embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the embodiments of the present invention are not limited to the specific details in the above embodiments. Within the scope of the technical concept of the embodiments of the present invention, various simple modifications can be made to the technical solutions of the embodiments of the present invention, and these simple modifications all fall within the protection scope of the embodiments of the present invention.

[0148] In addition, it should be noted that, in the above specific embodiments, the various specific technical features described can be combined in any suitable manner without conflict. To avoid unnecessary repetition, the embodiments of the present invention will not separately describe various possible combination manners.

[0149] In addition, any combination can be made among various different embodiments of the present utility model embodiment, as long as it does not violate the idea of the present utility model embodiment, and it should also be regarded as the content disclosed by the present utility model embodiment.

Claims

1. A breathing air supply valve, characterized in that: The breathing air supply valve comprises: A valve body (11), wherein a plurality of accommodating spaces are arranged in the valve body (11), an air supply pipe (12) and a breathing sensing pipe (13) are arranged on the valve body (11), and an air control channel and an air supply channel are opened in the valve body (11), and the air control channel and the air supply channel are both connected to the air outlet of the flow and pressure stabilizing component (16); A breathing sensing component (14) is arranged in a corresponding accommodation space in the valve body (11), and is used to generate displacement to open the air control channel when the breathing sensing tube (13) senses that the user has inhaled, and to reset to close the air control channel when the breathing sensing tube (13) senses that the user has stopped inhaling; an air supply on-off assembly (15), arranged in a corresponding accommodation space in the valve body (11), located below the breathing sensing assembly (14), and used to generate displacement to open the air supply passage after the air control passage is opened, start supplying air through the air supply pipe (12), and reset to close the air supply passage after the air control passage is closed, and stop supplying air through the air supply pipe (12); The flow and pressure stabilizing component (16) is arranged in the corresponding accommodation space in the valve body (11) and is located below the air supply on-off component (15). The air inlet of the flow and pressure stabilizing component (16) is connected to the air inlet of the breathing air supply valve and is used to adjust the gas flow and gas pressure entering the breathing air supply valve.

2. The breathing air supply valve according to claim 1, characterized in that: The valve body (11) comprises: A valve cover (111), a first valve body (112), a second valve body (113) and a valve seat (114) are arranged in sequence from top to bottom; The first valve body (112) is provided with a first channel (101), a second channel (102) and a third channel (103); The second valve body (113) is provided with a fourth channel (104) and a fifth channel (105); The first channel (101), the second channel (102), the third channel (103) and the fourth channel (104) together constitute the air control channel; The fifth channel (105) serves as the air supply channel; The valve seat (114) is provided with a first air inlet channel (106) serving as an air inlet of the breathing air supply valve.

3. The breathing air supply valve according to claim 2, characterized in that: The breathing sensing component (14) comprises: The sensing diaphragm (141) is arranged in the accommodation space between the valve cover (111) and the first valve body (112), and covers the first channel (101); when the user inhales, negative pressure is formed on the upper surface of the sensing diaphragm (141), so that the sensing diaphragm (141) is displaced upward to open the air control channel; when the user stops inhaling, the negative pressure on the upper surface of the sensing diaphragm (141) disappears, so that the sensing diaphragm (141) is reset to close the air control channel.

4. The breathing air supply valve according to claim 3, characterized in that: The breathing sensing component (14) further comprises: The first spring (142) is arranged between the valve cover (111) and the sensing diaphragm (141) and is used to assist the sensing diaphragm (141) in returning to its original position when the user stops inhaling.

5. The breathing air supply valve according to claim 3, characterized in that: The sensing diaphragm (141) comprises: A plastic layer, and a silicone layer disposed on an upper surface of the plastic layer; The Rockwell hardness of the plastic layer is in the range of 80-110.

6. The breathing air supply valve according to claim 3, characterized in that: The breathing sensing tube (13) is arranged on the valve cover (111), the tube mouth is communicated with the accommodation space between the valve cover (111) and the first valve body (112), and is located above the sensing diaphragm (141).

7. The breathing air supply valve according to claim 2, characterized in that: A flow limiting member (107) is disposed in the fifth channel (105).

8. The breathing air supply valve according to claim 2, characterized in that: The air supply on-off assembly (15) comprises: The air supply diaphragm (151) is arranged in the accommodating space between the first valve body (112) and the second valve body (113), and covers the fifth channel (105); when the air control channel is opened, the air pressure on the upper surface of the air supply diaphragm (151) decreases, so that the air supply diaphragm (151) is displaced upward to open the air supply channel; when the air control channel is closed, the air pressure on the upper surface of the air supply diaphragm (151) increases, and the air supply diaphragm (151) is reset under the action of pressure to close the air supply channel.

9. The breathing air supply valve according to claim 8, characterized in that: The air supply on-off assembly (15) further comprises: The second spring (152) is arranged between the air supply diaphragm (151) and the second valve body (113) and is used to assist the air supply diaphragm (151) to generate an upward displacement to open the air supply channel.

10. The breathing air supply valve according to claim 8, characterized in that: The air supply pipe (12) is arranged on the second valve body (113), the pipe mouth is communicated with the accommodation space between the first valve body (112) and the second valve body (113), and is located below the air supply diaphragm (151).

11. The breathing air supply valve according to claim 2, characterized in that: The current and voltage stabilizing component (16) comprises: A valve core (161) is slidably disposed in the accommodation space between the second valve body (113) and the valve seat (114); a second air inlet passage (108) is disposed on the valve core (161); a large end of the valve core (161) is connected to the inner wall of the second valve body (113) via a first sealing ring (162); a small end of the valve core (161) is connected to the inner wall of the valve seat (114) via a second sealing ring (163); a plug (164) for blocking the first air inlet passage (106) is disposed at the small end of the valve core (161); The third spring (165) is arranged between the valve core (161) and the valve seat (114).

12. An air supply device, characterized in that: The gas supply device comprises: The breathing air supply valve according to any one of claims 1 to 11; A gas cylinder (2) is used to store gas, and the breathing gas supply valve is arranged on the gas cylinder (2).

13. The air supply device according to claim 12, characterized in that: The air supply device also includes: An inhalation mask (3), wherein two through holes (31) are arranged on the inhalation mask (3), the inhalation mask (3) has a concave accommodating space, and the inhalation mask (3) is detachably arranged on the breathing air supply valve; The inhalation mask (3) is arranged on the breathing air supply valve so that the breathing air supply valve is located in the accommodation space of the inhalation mask (3); When the inhalation mask (3) is removed from the breathing air supply valve, the air supply pipe (12) and the breathing sensing pipe (13) can be inserted into corresponding through holes (31) on the inhalation mask (3), so that the ends of the air supply pipe (12) and the breathing sensing pipe (13) are located in the accommodating space of the inhalation mask (3) to perform air supply operation.

14. The air supply device according to claim 13, characterized in that: The outer wall of the bottom end of the valve seat (114) is provided with an external thread (1141) and at least one limiting protrusion (1142); A mounting seat (21) is fixedly arranged on the gas cylinder (2), and an inner wall of the mounting seat (21) is provided with an internal thread (211) and at least one limiting groove (212); The breathing air supply valve is rotatably connected to the mounting seat (21). When the breathing air supply valve is rotated to a first preset stroke relative to the mounting seat (21), the external thread (1141) and the corresponding internal thread (211) engage with each other, and the limiting protrusion (1142) and the corresponding limiting groove (212) engage with each other, so as to achieve a tight connection between the breathing air supply valve and the mounting seat (21).

15. The air supply device according to claim 14, characterized in that: At least one first latching tooth (1143) is provided on the outer wall of the valve seat (114); A plurality of second latching teeth (213) are arranged at intervals on the outer wall of the mounting seat (21); After the breathing air supply valve rotates relative to the mounting seat (21) beyond a second preset stroke, the first latching tooth (1143) and the corresponding second latching tooth (213) touch each other, generating a prompt sound.

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