Portable self-adjusting breathing air supply device

Abstract

The present invention discloses a portable breathing air supply device with adaptive adjustment. A lung valve is installed in the inner cavity of a first shell and the inner cavity is divided into an oxygen inlet cavity, an oxygen outlet cavity and an oxygen transfer cavity which are independent of each other. The oxygen inlet cavity is used to connect with an oxygen gas source, the oxygen outlet cavity is connected with the oxygen inlet in the suction pipe joint, the oxygen transfer cavity is connected with the mixed gas outlet in the suction pipe joint, and a bellows flow regulating mechanism is installed in the inner cavity of a second shell. The air inlet and the air outlet of the bellows flow regulating mechanism are respectively connected with the outside air and the air inlet in the suction pipe joint. The present invention has the advantages of being easy to adaptively adjust the oxygen and air flow, high integration, small size, light weight and easy to carry. It is suitable for providing oxygen supply protection for plateau workers and can be widely used in oxygen-demanding places such as plateaus and mountains, as well as teaching and experimental oxygen scenes.

Description

Technical Field

[0001] The invention relates to a breathing air supply device, in particular to a portable breathing air supply device with self-adaptive adjustment. Background Art

[0002] A breathing air supply device is used to provide oxygen or mixed gases with a high oxygen content to people who need oxygen. Traditional breathing air supply devices generally have the problems of being large in size, difficult to adaptively adjust the oxygen concentration, and having a large inhalation resistance.

[0003] Specifically, on the one hand, the traditional breathing air supply device does not integrate the automatic oxygen supply structure and the automatic air supply structure well. For example, high-concentration oxygen is directly inhaled through the respirator, and the user controls the respirator to determine whether to inhale a certain amount of outside air, or the respirator (such as a breathing mask or an inhalation tube) is directly connected to the outside air through an air pipe, but the air flow cannot be automatically adjusted. On the other hand, the valve of the automatic oxygen supply structure of the traditional breathing air supply device generally uses the axial elasticity of the spring, which leads to a large inhalation resistance, and the air supply structure cannot realize the function of automatically adjusting the flow rate, and cannot realize adaptive adjustment of the air flow in different altitudes. Therefore, it is impossible to realize adaptive adjustment of oxygen concentration according to different environments, such as different altitudes, which reduces the practicality of the product and user experience. Summary of the invention

[0004] The object of the present invention is to provide a portable breathing air supply device with adaptive adjustment in order to solve the above problems.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0006] A portable breathing air supply device with adaptive adjustment comprises a lung-type oxygen supply device, an air conditioning device and an inhalation pipe joint which are connected to each other, wherein an oxygen inlet, an air inlet and a mixed gas outlet are arranged in the inhalation pipe joint, wherein the oxygen inlet and the air inlet are connected to each other and then connected to the mixed gas outlet, wherein the mixed gas outlet is used to be connected to a breathing mask; the lung-type oxygen supply device comprises a first shell and a lung-type valve, wherein the lung-type valve comprising a breathing diaphragm is installed in an inner cavity of the first shell and divides the inner cavity into an oxygen inlet inner cavity, an oxygen outlet inner cavity and an oxygen transfer inner cavity which are independent of each other, wherein the oxygen inlet inner cavity is located on the inlet side of the switch of the lung-type valve and is used to be connected to an oxygen source, wherein the oxygen The air outlet cavity is located in the lung valve and on the switch outlet side of the lung valve and is connected to the oxygen inlet in the intake pipe joint through the oxygen channel. The oxygen transfer cavity is located on the switch control side of the lung valve and the breathing diaphragm is located in the oxygen transfer cavity. The oxygen transfer cavity is connected to the mixed gas outlet in the intake pipe joint through the diaphragm pressure channel. The air conditioning device includes a second shell and a bellows flow regulating mechanism. The bellows flow regulating mechanism is installed in the inner cavity of the second shell. The air inlet of the bellows flow regulating mechanism is connected to the outside air, and the air outlet of the bellows flow regulating mechanism is connected to the air inlet in the intake pipe joint through the air channel. The above-mentioned breathing diaphragm adopts a conventional diaphragm with a circular groove. The part of the diaphragm located on the outer periphery of the circular groove is used for connection and installation, and the part located inside the circular groove is used to form an elastic structure. When subjected to external force, it will bend to one side and return to its original shape after the external force is lost. Cooperating with the elastic component of the lung valve can achieve a better elastic effect and facilitate the adjustment of the pressure required for the diaphragm to bend. The elastic component is in contact with the part of the diaphragm located inside the circular groove.

[0007] Preferably, in order to facilitate the corresponding connection with the lung type oxygen supply device and the air conditioning device and form a concentrated mixed gas for the user to inhale, an oxygen nozzle and a mixed gas nozzle are provided in the intake pipe joint, the air inlet of the oxygen nozzle is the oxygen inlet in the intake pipe joint, the outlet of the oxygen nozzle is connected with the air inlet in the intake pipe joint and the air inlet of the mixed gas nozzle, and the air outlet of the mixed gas nozzle is the mixed gas outlet in the intake pipe joint.

[0008] Preferably, in order to reduce the impact force when the oxygen nozzle is impacted by high-pressure oxygen so as to protect the oxygen nozzle and extend its life, the oxygen nozzle is installed in the intake pipe joint through a nozzle mounting seat, the oxygen nozzle can move in the air flow direction, and a nozzle spring is installed between the oxygen nozzle and the mixed gas nozzle.

[0009] Preferably, in order to achieve better product stability and improve integration, the first shell and the second shell are formed in one piece, and the intake pipe joint is installed on the second shell.

[0010] Preferably, in order to reduce the inhalation resistance, improve the accuracy of adaptive flow control, save space, reduce volume and weight, the lung valve also includes an oxygen valve seat, an annular cone, a valve rod and a valve spring. A valve seat through hole is provided at the center of the oxygen valve seat. The oxygen valve seat is located between the oxygen inlet cavity and the oxygen outlet cavity. A plug is provided at the first end of the valve rod. The valve rod passes through the valve seat through hole and its plug is placed in the oxygen inlet cavity. The plug of the valve rod can close the valve seat through hole when the valve rod is perpendicular to the oxygen valve seat and open the valve seat through hole when the valve rod is tilted. The annular cone and the plug of the valve rod are respectively located at On both sides of the oxygen valve seat, the small end of the annular cone contacts with the plug of the valve rod, the valve rod passes through the central through hole of the annular cone, the space between the large end of the annular cone and the oxygen valve seat forms the oxygen outlet cavity, the second end of the valve rod is connected with or directly provided with a ball head, the valve spring is placed between the large end of the annular cone and the ball head and is sleeved on the outside of the valve rod, the ball head contacts or is rotationally connected with the middle part of one side of the breathing diaphragm located in the oxygen transfer cavity, the valve rod and the middle part of the breathing diaphragm have an angle of 15-60°, and the other side of the breathing diaphragm is located in a fixed pressure cavity with a fixed air pressure.

[0011] Preferably, in order to further reduce the air intake resistance, the valve spring is conical and its large end is connected to the large end of the annular cone and its small end is connected to the ball head.

[0012] Preferably, in order to facilitate processing and assembly, the solid pressure inner cavity is formed by connecting the first shell cover plate to the first shell, and a metal sheet is fixedly connected to one side of the breathing membrane located in the oxygen transfer inner cavity, and the ball head is in contact with or rotationally connected to the metal sheet.

[0013] Preferably, in order to maximize the degree of integration and reduce the volume and weight, an independent air transfer cavity is further provided in the first shell, the air transfer cavity is provided with an air inlet connected to the outside air, the air transfer cavity is connected to the air channel, an air filter and an air valve plate are provided in sequence on the inner side of the air inlet of the air transfer cavity, a valve plate spring is installed between the air valve plate and the corresponding cavity wall of the air transfer cavity, and the valve plate spring is used to press the air valve plate to the inner side of the air inlet of the air transfer cavity.

[0014] Preferably, in order to improve the sensitivity of adaptive air flow regulation and facilitate installation and improve integration, the bellows flow regulation mechanism includes an open cylinder, a vacuum bellows, a first valve shaft, a second valve shaft, a regulating valve seat and a regulating valve cover, the open cylinder is provided with at least a first opening and a second opening which serve as an air inlet and an air outlet of the bellows flow regulation mechanism respectively, the regulating valve seat is installed at the second opening, an air through hole is provided on the regulating valve seat and the air through hole is simultaneously connected to the interior of the open cylinder and the air channel, the first valve shaft is installed on the inner wall of the open cylinder opposite to the second opening, the first end of the vacuum bellows placed in the open cylinder is sealingly connected to the first valve shaft, the second end of the vacuum bellows is sealingly connected to the second valve shaft, the regulating valve cover is installed on the second valve shaft, a gap for air to pass through is provided between the regulating valve cover and the regulating valve seat and the two can form a seal when they contact each other.

[0015] Preferably, in order to avoid damage to parts caused by a large impact when the regulating valve cover and the regulating valve seat are sealed, the bellows flow regulating mechanism also includes a third valve shaft and an adjusting spring. The third valve shaft is installed on the second valve shaft. The regulating valve cover is installed on the third valve shaft and can move in the direction close to and away from the regulating valve seat and can be limited by the third valve shaft so that it cannot separate from the third valve shaft. The adjusting spring is installed between the regulating valve cover and the second valve shaft so that the regulating valve cover has the elasticity to move toward the regulating valve seat.

[0016] The beneficial effects of the present invention are:

[0017] The present invention integrates a lung-type oxygen supply device with an adaptive oxygen switch and flow rate, an air conditioning device with an adaptive air switch and flow rate, and an inhalation pipe joint for mixing oxygen and air to form a breathing air supply device with an integral structure. The present invention has the advantages of easy adaptive adjustment of oxygen and air flow rates, high integration, small size, light weight, and easy carrying. The present invention is suitable for providing oxygen supply protection for plateau workers to improve their comfort and weather resistance. The present invention can be widely used in oxygen-requiring places such as plateaus and mountains, as well as oxygen scenes for teaching experiments. The present invention can be connected with oxygen cylinders and respiratory masks to form a clothing-type breathing air supply device, which is more convenient to carry.

[0018] The present invention adopts a lung-type oxygen supply device with a unique structure, and utilizes a breathing diaphragm to drive an inclined valve rod to move radially. It only needs to overcome the radial elastic force of the valve spring, thereby greatly reducing the starting force required to open the oxygen switch, that is, greatly reducing the inhalation resistance, and at the same time will not reduce the accuracy of the oxygen switch and flow control; at the same time, by independently delivering oxygen to the inhalation pipe joint, and connecting the oxygen transfer inner cavity where the breathing diaphragm is located with the mixed gas outlet of the inhalation pipe joint, it can not only achieve the purpose of automatically opening the oxygen switch during inhalation, but also isolate the oxygen delivery channel from the inner cavity where the breathing diaphragm is located, thereby reducing the mutual influence between the oxygen supply and the oxygen switch control mechanism, reducing oxygen loss and improving control accuracy.

[0019] The present invention adopts a bellows flow regulating mechanism with a unique structure and utilizes the function of the vacuum bellows having different expansion and contraction amounts under different external pressures to realize the adaptive adjustment function of the distance between the regulating valve cover and the regulating valve seat. When the altitude is low and the atmospheric pressure is high, the user does not need to inhale too high a concentration of oxygen. At this time, the expansion length of the vacuum bellows is short, the distance between the regulating valve cover and the regulating valve seat is large, and the air flow is large, so that the oxygen concentration delivered to the breathing mask is low. Conversely, when the altitude is high and the atmospheric pressure is low, the user needs to inhale a higher concentration of oxygen. At this time, the expansion length of the vacuum bellows is long, the distance between the regulating valve cover and the regulating valve seat is small (or sealed), and the air flow is small (or cut-off), so that the oxygen concentration delivered to the breathing mask is high, thereby realizing the adaptive adjustment function of the air flow and oxygen concentration at different altitudes. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a front view of the portable self-adjustable breathing air supply device of the present invention;

[0021] Figure 2 is a top view of the portable self-adjustable breathing air supply device of the present invention;

[0022] Figure 3 yes Figure 1 AA section enlarged view in;

[0023] Figure 4 yes Figure 1 BB cross-section enlarged view in;

[0024] Figure 5 yes Figure 2 Magnified view of the CC section in . DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings:

[0026] like Figure 1-Figure 5As shown, the portable breathing air supply device with self-adjustment of the present invention comprises a lung-type oxygen supply device 2, an air conditioning device 1 and an inhalation pipe joint 3 which are connected to each other. The inhalation pipe joint 3 is provided with an oxygen inlet (i.e., an inlet of an oxygen nozzle 302, not marked in the figure), an air inlet (i.e., an inlet connected to an air channel 101, not marked in the figure) and a mixed gas outlet (i.e., an outlet of the mixed gas nozzle 300, not marked in the figure). The oxygen inlet is connected to the air inlet and then connected to the mixed gas outlet. The mixed gas outlet is connected to the breathing mask (not shown in the figure); the lung oxygen supply device 2 includes a first shell 201 and a lung valve, the lung valve including a breathing diaphragm 217 is installed in the inner cavity of the first shell 201 and divides the inner cavity into mutually independent oxygen inlet cavity 203, oxygen outlet cavity 206 and oxygen transfer cavity 217, the oxygen inlet cavity 203 is located on the switch inlet side of the lung valve and is used to connect to the oxygen source (not shown in the figure) through the oxygen connector 200, and the oxygen The air outlet cavity 206 is located in the lung valve and on the switch outlet side of the lung valve and is connected to the oxygen inlet in the inhalation pipe joint 3 through the oxygen passage 102 (Note: the oxygen passage 102 is arranged according to the position of the inhalation pipe joint 3, and does not have to be arranged in the air conditioning device 1. It is just because the inhalation pipe joint 3 in this example is installed on the air conditioning device 1, so the oxygen passage 102 is arranged in the air conditioning device 1). The oxygen transfer cavity 218 is located on the switch control side of the lung valve and on the inhalation pipe joint 3. The suction membrane sheet 217 is located in the oxygen transfer inner cavity 218, and the oxygen transfer inner cavity 218 is connected to the mixed gas outlet in the intake pipe joint 3 through the membrane pressure-inducing channel 103; the air conditioning device 1 includes a second shell 100 and a bellows flow regulating mechanism, and the bellows flow regulating mechanism is installed in the inner cavity of the second shell 100, the air inlet of the bellows flow regulating mechanism is connected to the outside air, and the air outlet of the bellows flow regulating mechanism is connected to the air inlet in the intake pipe joint 3 through the air channel 101.

[0027] like Figure 1-Figure 5 As shown, the basic working principle of the portable breathing air supply device with adaptive adjustment according to the present invention is as follows:

[0028] Before use, connect the inhalation pipe joint 3 to the breathing mask, and connect the joint corresponding to the oxygen inlet cavity 203 to the high-pressure oxygen source; high-pressure oxygen (such as high-concentration oxygen prepared by an oxygen concentrator) first enters the oxygen inlet cavity 203. If the user does not inhale oxygen, the air pressure of the oxygen transfer cavity 218 is consistent with the air pressure of the mixed gas outlet in the inhalation pipe joint 3 and neither is a negative pressure, then the breathing diaphragm 217 will not bend, the switch of the lung valve is in a closed state, and oxygen cannot enter the oxygen outlet cavity 206; if the user starts to inhale oxygen, the air pressure of the oxygen transfer cavity 218 is consistent with the air pressure of the mixed gas outlet in the inhalation pipe joint 3 and both become negative pressure, then the breathing diaphragm 217 will bend, and the switch of the lung valve is in an open state. In this state, oxygen enters the oxygen outlet cavity 206, and enters the oxygen inlet in the intake pipe connector 3 through the oxygen channel 102, and then enters the breathing mask from the mixed gas outlet in the intake pipe connector 3 after being mixed with air, and the user inhales it to realize the oxygen inhalation function; at the same time, the bellows flow regulating mechanism in the air conditioning device 1 adaptively changes the air flow entering the air inlet in the intake pipe connector 3 according to the different altitudes. When the altitude is low, the atmospheric pressure is high, so the air flow is large, and the oxygen concentration is low after mixing with oxygen. When the altitude is high, the atmospheric pressure is low, so the air flow is small, and the oxygen concentration is high after mixing with oxygen, which meets the user's demand for increased oxygen inhalation at high altitudes, thereby realizing the adaptive regulation function of oxygen concentration.

[0029] like Figure 1-Figure 5 As shown, a variety of more optimized structures of the present invention are also disclosed below. According to actual needs, one or more of the following structures can be superimposed and combined with the above structure to form a more optimized technical solution.

[0030] like Figure 3 and Figure 5 As shown, in order to facilitate the corresponding connection with the lung type oxygen supply device 2 and the air conditioning device 1 and form a concentrated mixed gas for the user to inhale, an oxygen nozzle 302 and a mixed gas nozzle 300 are provided in the intake pipe connector 3, the air inlet of the oxygen nozzle 302 is the oxygen inlet in the intake pipe connector 3, the outlet of the oxygen nozzle 302 is connected with the air inlet in the intake pipe connector 3 and the air inlet of the mixed gas nozzle 300, and the air outlet of the mixed gas nozzle 300 is the mixed gas outlet in the intake pipe connector 3.

[0031] like Figure 3 and Figure 5As shown, in order to reduce the impact force of the oxygen nozzle 302 when it is impacted by high-pressure oxygen so as to protect the oxygen nozzle 302 and extend its life, the oxygen nozzle 302 is installed in the air intake pipe joint 3 through the nozzle mounting seat 303, and the oxygen nozzle 302 can move in the air flow direction (up and down direction in the figure), and a nozzle spring 301 is installed between the oxygen nozzle 302 and the mixed gas nozzle 300. The nozzle spring 301 enables the oxygen nozzle 302 to have an elastic force away from the mixed gas nozzle 300. When the high-pressure oxygen enters the air inlet of the oxygen nozzle 302, the impact force causes the oxygen nozzle 302 to overcome the elastic force of the nozzle spring 301 and move toward the mixed gas nozzle 300, forming an elastic structure, thereby buffering the impact force of the high-pressure oxygen.

[0032] like Figure 1 , Figure 2 and Figure 5 As shown, in order to achieve better product stability and improve integration, the first shell 201 and the second shell 100 are integrally formed, and the air intake pipe connector 3 is installed on the second shell 100.

[0033] like Figure 4As shown, in order to reduce the inhalation resistance, improve the accuracy of adaptive flow control, save space, reduce volume and weight, the lung valve also includes an oxygen valve seat 204, an annular cone 207, a valve rod 208 and a valve spring 209. A valve seat through hole is provided at the center of the oxygen valve seat 204. The oxygen valve seat 204 is located between the oxygen inlet cavity 203 and the oxygen outlet cavity 206. A plug (not marked in the figure) is provided at the first end of the valve rod 208. The valve rod 208 passes through the valve seat through hole and its plug is placed in the oxygen inlet cavity 203. The plug of the valve rod 208 can close the valve seat through hole when the valve rod 208 is vertical to the oxygen valve seat 204 and open the valve seat through hole when the valve rod 208 is tilted. The annular cone 207 and the plug of the valve rod 208 are respectively located on both sides of the oxygen valve seat 204. The small end of the body 207 contacts with the plug of the valve rod 208, the valve rod 208 passes through the central through hole of the annular cone 207, the space between the large end of the annular cone 207 and the oxygen valve seat 204 forms an oxygen outlet cavity 206, the second end of the valve rod 208 is connected with or directly provided with a ball head 212, the valve spring 209 is placed between the large end of the annular cone 207 and the ball head 212 and is sleeved on the outside of the valve rod 208, the ball head 212 contacts (or is rotationally connected) with the middle part of one side of the breathing diaphragm 217 located in the oxygen transfer cavity 218, the valve rod 208 and the middle part of the breathing diaphragm 217 have an angle of 15-60° (30° in the figure), and the other side of the breathing diaphragm 217 is located in a fixed pressure cavity with a fixed air pressure (not marked in the figure, and its specific air pressure is determined according to actual needs). The lung-type valve of the above structure utilizes the elastic reset of the breathing diaphragm 217 itself and the pressure difference between the solid pressure cavity and the oxygen transfer cavity 218 to push the valve rod 208. After being pushed, the valve rod 208 will overcome the radial elasticity of the valve spring 209 and tilt, thereby opening the valve switch, that is, a channel is formed between the plug of the valve rod 208 and the valve seat through hole of the oxygen valve seat 204, and oxygen can enter the oxygen outlet cavity 206. The inclined valve rod 208 not only has the effect of reducing the oxygen absorption resistance, but also can reduce the volume and weight of the entire lung-type oxygen supply device 2.

[0034] like Figure 4 As shown, in order to further reduce the suction resistance, the valve spring 209 is conical and its large end is connected to the large end of the annular cone 207 and its small end is connected to the ball head 212.

[0035] like Figure 4 As shown, in order to facilitate processing and assembly, the solid pressure inner cavity is formed by connecting the first shell cover 202 with the first shell 201, and a metal sheet 215 is fixedly connected to one side of the breathing membrane 217 located in the oxygen transfer inner cavity 218, and the ball head 212 is in contact with the metal sheet 215 (or rotationally connected).

[0036] like Figure 4 As shown, in order to maximize the integration and reduce the volume and weight, the first housing 201 is further provided with an independent air transfer cavity 216, the air transfer cavity 216 is provided with an air inlet 210 connected to the outside air, and the air transfer cavity 216 is connected to the air channel 101 (see Figure 3 ) is connected, an air filter 211 and an air valve plate 213 are arranged on the inner side of the air inlet 210 of the air transfer inner cavity 216 in sequence, a valve plate spring 214 is installed between the air valve plate 213 and the corresponding cavity wall of the air transfer inner cavity 216, and the valve plate spring 214 is used to press the air valve plate 213 to the inner side of the air inlet 210 of the air transfer inner cavity 216. The air transfer inner cavity 216 is arranged in the first shell 201 because the inclined structure of the lung valve saves space, and the air conditioning device 1 itself does not have more free space, thus forming a more compact overall structure. When the user inhales oxygen, the air pressure in the air transfer inner cavity 216 is reduced to negative pressure, and the outside air pushes the air valve plate 213 and enters the air transfer inner cavity 216, and enters the inhalation pipe connector 3 through the air channel 101 to mix with oxygen.

[0037] like Figure 3 and Figure 5As shown, in order to improve the sensitivity of the air flow adaptive regulation and facilitate installation and improve the integration, the bellows flow regulation mechanism includes an open cylinder 112, a vacuum bellows 110, a first valve shaft 113, a second valve shaft 109, a regulating valve seat 104 and a regulating valve cover 107, the open cylinder 112 is provided with at least a first opening 111 (located on the side of the open cylinder 112 in the figure) and a second opening (located on the upper part of the open cylinder 112 in the figure, not marked in the figure) which serve as the air inlet and the air outlet of the bellows flow regulation mechanism respectively, the regulating valve seat 104 is installed at the second opening, and the regulating valve seat 104 is provided with an air through hole 105 and the air through hole 105 is provided with the air through hole 105. The hole 105 is connected to the interior of the open cylinder 112 and the air channel 102 at the same time. The first valve shaft 113 is installed on the inner wall of the open cylinder 112 opposite to the second opening through a locking nut 114. The first end of the vacuum bellows 110 placed in the open cylinder 112 is sealed with the first valve shaft 113, and the second end of the vacuum bellows 110 is sealed with the second valve shaft 109. The regulating valve cover 106 is installed on the second valve shaft 109. A gap for air to pass through is provided between the regulating valve cover 107 and the regulating valve seat 104, and the two can form a seal when they contact each other. The opening end of the first shell 201 is installed with the first shell cover plate 115. The vacuum bellows 110 itself has the following characteristics: its expansion and contraction amount is smaller when the external air pressure is larger, and its expansion and contraction amount is larger when the external air pressure is smaller. The present invention utilizes this characteristic to make the expansion and contraction amount of the vacuum bellows 110 inversely proportional to the external air pressure. Therefore, when the altitude is low and the air pressure is high, because the expansion and contraction amount of the vacuum bellows 110 is smaller, the gap between the regulating valve cover 107 and the regulating valve seat 104 is larger, more air enters the air channel 102, and the oxygen concentration of the gas after mixing with oxygen is lower. Conversely, when the altitude is high and the air pressure is low, because the expansion and contraction amount of the vacuum bellows 110 is larger, the gap between the regulating valve cover 107 and the regulating valve seat 104 is smaller, less air enters the air channel 102, and the oxygen concentration of the gas after mixing with oxygen is higher. In this way, the user's oxygen inhalation needs are met in an adaptive adjustment manner.

[0038] like Figure 3 As shown, in order to avoid damage to parts caused by a large impact when the regulating valve cover 107 is sealed with the regulating valve seat 104, the bellows flow regulating mechanism also includes a third valve shaft 106 and an adjusting spring 108. The third valve shaft 106 is installed on the second valve shaft 109. The regulating valve cover 107 is installed on the third valve shaft 106 and can move in the direction close to and away from the regulating valve seat 104 (the up and down directions in the figure) and can be limited by the third valve shaft 106 so that it cannot be separated from the third valve shaft 106. The adjusting spring 108 is installed between the regulating valve cover 107 and the second valve shaft 109 so that the regulating valve cover 107 has the elasticity to move in the direction close to the regulating valve seat 104.

[0039] The above embodiments are only preferred embodiments of the present invention and are not limitations of the technical solutions of the present invention. Any technical solution that can be implemented on the basis of the above embodiments without creative work should be deemed to fall within the scope of protection of the patent of the present invention.

Claims

1. A portable breathing air supply device with adaptive regulation, comprising a lung oxygen supply device, an air conditioning device and an inhalation pipe joint connected to each other, characterized in that: The inhalation pipe joint is provided with an oxygen inlet, an air inlet and a mixed gas outlet. The oxygen inlet is connected to the air inlet and then connected to the mixed gas outlet. The mixed gas outlet is used to connect to a breathing mask. The lung-type oxygen supply device comprises a first shell and a lung-type valve. The lung-type valve including a breathing diaphragm is installed in the inner cavity of the first shell and divides the inner cavity into mutually independent oxygen inlet inner cavity, oxygen outlet inner cavity and oxygen transfer inner cavity. The oxygen inlet inner cavity is located on the inlet side of the switch of the lung-type valve and is used to The air conditioning device is connected to an oxygen source, the oxygen outlet inner cavity is located in the lung valve and is located on the switch outlet side of the lung valve and is communicated with the oxygen inlet in the inhalation pipe joint through the oxygen channel, the oxygen transfer inner cavity is located on the switch control side of the lung valve and the breathing diaphragm is located in the oxygen transfer inner cavity, and the oxygen transfer inner cavity is communicated with the mixed gas outlet in the inhalation pipe joint through the diaphragm pressure guide channel; the air conditioning device includes a second shell and a bellows flow regulating mechanism, and the bellows flow regulating mechanism is installed on the second shell In the inner cavity of the body, the air inlet of the bellows flow regulating mechanism is communicated with the outside air, and the air outlet of the bellows flow regulating mechanism is communicated with the air inlet in the intake pipe joint through the air channel; an oxygen nozzle and a mixed gas nozzle are arranged in the intake pipe joint, the air inlet of the oxygen nozzle is the oxygen inlet in the intake pipe joint, the outlet of the oxygen nozzle is communicated with the air inlet in the intake pipe joint and the air inlet of the mixed gas nozzle, and the air outlet of the mixed gas nozzle is the mixed gas outlet in the intake pipe joint; A shell is integrally formed with the second shell, and the intake pipe joint is installed on the second shell; an independent air transfer inner cavity is also provided in the first shell, and the air transfer inner cavity is provided with an air inlet connected to the outside air, and the air transfer inner cavity is connected to the air channel, and an air filter and an air valve plate are provided on the inner side of the air inlet of the air transfer inner cavity in sequence, and a valve plate spring is installed between the air valve plate and the corresponding cavity wall of the air transfer inner cavity, and the valve plate spring is used to press the air valve plate to the inner side of the air inlet of the air transfer inner cavity.

2. The portable self-adjustable breathing air supply device according to claim 1, characterized in that: The oxygen nozzle is installed in the air intake pipe joint through a nozzle mounting seat. The oxygen nozzle can move in the air flow direction. A nozzle spring is installed between the oxygen nozzle and the mixed gas nozzle.

3. The portable self-adjustable breathing air supply device according to claim 1 or 2, characterized in that: The lung valve also includes an oxygen valve seat, an annular cone, a valve rod and a valve spring. A valve seat through hole is provided at the center of the oxygen valve seat. The oxygen valve seat is located between the oxygen inlet cavity and the oxygen outlet cavity. A plug is provided at the first end of the valve rod. The valve rod passes through the valve seat through hole and its plug is placed in the oxygen inlet cavity. The plug of the valve rod can close the valve seat through hole when the valve rod is vertical to the oxygen valve seat and open the valve seat through hole when the valve rod is tilted. The annular cone and the plug of the valve rod are respectively located on both sides of the oxygen valve seat. The small end of the annular cone is connected to the The valve rod is in contact with the plug, the valve rod passes through the central through hole of the annular cone, the space between the large end of the annular cone and the oxygen valve seat forms the oxygen outlet cavity, the second end of the valve rod is connected to or directly provided with a ball head, the valve spring is placed between the large end of the annular cone and the ball head and is sleeved on the outside of the valve rod, the ball head is in contact with or rotationally connected to the middle part of one side of the breathing diaphragm located in the oxygen transfer cavity, the valve rod and the middle part of the breathing diaphragm have an angle of 15-60°, and the other side of the breathing diaphragm is located in a fixed pressure cavity with a fixed air pressure.

4. The portable self-adjustable breathing air supply device according to claim 3, characterized in that: The valve spring is conical, and its large end is connected to the large end of the annular cone, and its small end is connected to the ball head.

5. The portable self-adjustable breathing air supply device according to claim 3, characterized in that: The solid pressure inner cavity is formed by connecting the first shell cover plate to the first shell, a metal sheet is fixedly connected to one side of the breathing membrane located in the oxygen transfer inner cavity, and the ball head is in contact with or rotationally connected to the metal sheet.

6. The portable self-adjustable breathing air supply device according to claim 1 or 2, characterized in that: The bellows flow regulating mechanism includes an open cylinder, a vacuum bellows, a first valve shaft, a second valve shaft, a regulating valve seat and a regulating valve cover. The open cylinder is provided with at least a first opening and a second opening which serve as an air inlet and an air outlet of the bellows flow regulating mechanism respectively. The regulating valve seat is installed at the second opening. An air through hole is provided on the regulating valve seat and the air through hole is communicated with the interior of the open cylinder and the air channel at the same time. The first valve shaft is installed on the inner wall of the open cylinder opposite to the second opening. The first end of the vacuum bellows placed in the open cylinder is sealingly connected to the first valve shaft, and the second end of the vacuum bellows is sealingly connected to the second valve shaft. The regulating valve cover is installed on the second valve shaft. A gap for air to pass through is provided between the regulating valve cover and the regulating valve seat and the two can form a seal when they contact each other.

7. The portable self-adjustable breathing air supply device according to claim 6, characterized in that: The bellows flow regulating mechanism also includes a third valve shaft and an adjusting spring, the third valve shaft is installed on the second valve shaft, the regulating valve cover is installed on the third valve shaft and can move in the direction close to and away from the regulating valve seat and can be limited by the third valve shaft so that it cannot separate from the third valve shaft, and the adjusting spring is installed between the regulating valve cover and the second valve shaft so that the regulating valve cover has the elasticity to move in the direction close to the regulating valve seat.

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