A respiratory protective device for use in high-altitude environments and its usage method

Abstract

This invention discloses a respiratory protective device and its usage method for high-altitude environments, belonging to the field of respiratory protective masks. The respiratory protective device for high-altitude environments includes a mask with an exhalation valve and an inhalation valve connected to it. It also includes an oxygen generator, an oxygen storage cylinder, a respiratory detection sensor module, a solenoid valve, and a main control module. The respiratory detection sensor module includes an oxygen sensor and a breathing pressure sensor installed inside the mask to monitor the oxygen concentration within the mask. The oxygen sensor feeds back the detected oxygen concentration to the oxygen generator, increasing or decreasing the oxygen supply to achieve a preset oxygen concentration in the breathing zone of the mask. The main control module receives real-time breathing signals from the oxygen sensor and the breathing pressure sensor, determines the user's breathing condition, and outputs corresponding control signals to control the solenoid valve's on / off state, thus shutting off oxygen storage during exhalation and opening oxygen supply during inhalation.

Description

Technical Field

[0001] This invention relates to the field of respiratory protective mask technology, and in particular to a respiratory protective device and its usage method for use in high-altitude environments. Background Technology

[0002] With the adjustment of the layout of mineral resource development, high-altitude mining areas generally have the objective conditions of thin air and low oxygen environment. As the altitude increases, the oxygen partial pressure in the air will continue to decrease. For every 1,000m increase in altitude, the human working capacity will decrease by about 10%. The low oxygen environment will continuously damage the human cardiopulmonary function and the body's energy metabolism.

[0003] Blood oxygen saturation is a key physiological parameter for assessing the degree of hypoxia in the human body at high altitudes. In healthy individuals at low altitudes, blood oxygen saturation ranges from 97% to 100%. Blood oxygen saturation below 90% is diagnosed as hypoxemia. According to the physiological threshold analysis of the human body, the partial pressure of oxygen in the air required to maintain 90% blood oxygen is about 14.7 kPa, which corresponds to a natural altitude of about 3000m. In mining areas at altitudes above 3000m, the human body cannot maintain normal blood oxygen levels through its own compensation, which can easily lead to acute altitude sickness such as dizziness, chest tightness, and fatigue. Long-term work can also induce critical illnesses such as pulmonary hypertension and high-altitude pulmonary edema, threatening the personal safety of miners underground.

[0004] Existing conventional high-altitude respiratory protection equipment is divided into two categories: self-priming filter masks and fixed oxygen supply masks. Existing portable oxygen concentrators are limited by size, power, and battery life, making it difficult to achieve high-flow, high-concentration continuous oxygen supply. In conventional continuous oxygen supply mode, the device outputs oxygen throughout the entire process, and oxygen is directly wasted during the user's exhalation phase. This not only significantly reduces oxygen utilization but also requires the device to operate at high power continuously, resulting in high power consumption, short battery life, and large overall size. It is impossible to balance portability and the need for high-concentration oxygen supply. At the same time, traditional portable oxygen concentrators are difficult to match with the human breathing rhythm, resulting in a disconnect between oxygen supply and breathing actions. The partial pressure of oxygen inhaled by the user is unstable, leading to a poor oxygen supply experience and effect.

[0005] In addition, conventional self-priming masks can only filter dust and harmful gases, but cannot change the oxygen content of the inhaled air. Therefore, they cannot improve the hypoxia problem in high-altitude areas above 3000m. Traditional oxygen supply masks are mostly single fixed opening oxygen supply structures, and the oxygen intake flow rate is not adjustable. They cannot flexibly adjust the air and high-purity oxygen intake according to altitude and individual tolerance. Either the oxygen supply is too much, causing oxygen waste and increasing the cost of use, or the oxygen supply is insufficient, making it impossible to control the physiological equivalent altitude within the 3000m safety line. Summary of the Invention

[0006] The purpose of this invention is to provide a respiratory protection device and its usage method for use in high-altitude environments, which can simultaneously regulate the intake of oxygen and natural air, and adjust the oxygen concentration of the mixed gas.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A respiratory protection device for high-altitude environments includes a face mask with an exhalation valve and an inhalation valve connected to it. It also includes an oxygen generator, an oxygen storage cylinder, a respiratory detection sensor module, a solenoid valve, and a main control module. The respiratory detection sensor module includes an oxygen sensor and a breathing pressure sensor installed inside the face mask to monitor the oxygen concentration within the mask. The solenoid valve is connected to the oxygen supply line between the oxygen storage cylinder and the face mask. The oxygen sensor and breathing pressure sensor identify the user's breathing state at the start and end of inhalation and upload this information to the main control module in real time. The main control module receives the real-time respiratory signals from the oxygen sensor and breathing pressure sensor, determines the user's breathing condition, and outputs corresponding control signals to control the on / off state of the solenoid valve and its opening degree, thereby achieving oxygen storage shutdown during exhalation, oxygen supply activation during inhalation, and adjustment of the oxygen supply concentration.

[0008] The inhalation valve is connected to a connector for connecting an oxygen tube. The connector has a conical oxygen inlet hole that communicates with the inhalation valve. A conical adjusting plate is slidably connected to the conical oxygen inlet hole. A traction adjusting rope is connected to the conical adjusting plate. The connector head has an air hole that communicates with the intake valve. An air inlet diaphragm is connected to the end of the air hole that communicates with the intake valve. In a specific implementation, multiple air holes are provided and evenly distributed on the connector head. A conical block with a conical hole is fixedly connected to the air hole. A conical plate is connected in the conical block. The upper end of the conical plate is connected to the traction adjustment rope through a traction auxiliary rope.

[0009] To facilitate the sliding of the conical adjusting plate, preferably, a groove is provided on the conical oxygen inlet, and a sliding rod matching the groove is fixedly connected to the conical adjusting plate, and the traction adjusting rope is connected to the sliding rod.

[0010] To facilitate resetting, a reset spring is further connected to the conical adjusting plate, and the reset spring is connected to the connector head.

[0011] For ease of resetting, preferably, the conical plate is connected to the conical block by a tension spring.

[0012] To further facilitate the pulling of the traction adjustment rope, the air intake valve is connected to a protective cover, which is fitted onto the connector head. An adjustment ring is rotatably connected to the protective cover, which is connected to the traction adjustment rope. A threaded locking bolt is attached to the adjustment ring, and the locking end of the threaded locking bolt abuts against the protective cover.

[0013] Furthermore, the protective cover has multiple triangular air intake channels.

[0014] Furthermore, the protective cover has a square air intake channel, and a blocking adjustment plate is slidably connected to the square air intake channel. The blocking adjustment plate is connected to the traction rope via a pull rope. A return spring connects the blocking adjustment plate and the square air intake channel; when a large air intake is required, the pull rope pulls the blocking adjustment plate, widening the opening of the square air intake channel to facilitate air intake; when a small air intake is required, the blocking adjustment plate returns to its original position, narrowing the opening of the square air intake channel to prevent larger debris from entering between the connector and the protective cover.

[0015] Furthermore, the oxygen pipe is threaded into the connector and communicates with the tapered oxygen inlet hole.

[0016] A method for using a respiratory protective device in high-altitude environments includes the following steps: S1. Put on the mask, put on the oxygen generator and oxygen storage cylinder on your back, and connect the oxygen tube of the oxygen storage cylinder to the connector. S2, the oxygen sensor and the breathing pressure sensor collect the user's breathing airflow / pressure signals in real time, collect oxygen concentration and oxygen supply flow data and transmit them to the main control module, the main control module determines the user's current breathing status in real time; S3. If the user finishes exhaling and enters the inhalation phase, the main control module controls the pipeline solenoid valve to open the oxygen supply pipeline, and the oxygen storage cylinder releases the reserve oxygen at the corresponding level to supply oxygen to the user. When it is necessary to adjust the oxygen supply parameters, the main control module simultaneously controls and corrects the working parameters of the oxygen generator, and synchronously adjusts the opening degree of the control solenoid valve to increase or decrease the oxygen supply. Combined with sensor feedback data, the control is calibrated to ensure that the air in the breathing zone inside the mask reaches the preset oxygen concentration. S4. Repeat the above process repeatedly, and the oxygen generator will work in a steady state. Only the oxygen supply line will be intermittently opened and closed according to the breathing rhythm, so as to achieve the effect of energy saving and long-lasting synchronous oxygen supply.

[0017] Compared with the prior art, the present invention provides a respiratory protection device and its usage method for high-altitude environments, which has the following beneficial effects: 1. The oxygen cylinder operates continuously and steadily without frequent start-stop losses. It stops oxygen supply during the exhalation phase to reduce oxygen waste. At the same time, the oxygen supply can be flexibly reduced according to actual needs to reduce idle and redundant power consumption. The oxygen supply can be flexibly increased or decreased according to the usage scenario. It is also matched with closed-loop detection of oxygen concentration to ensure stable concentration under different oxygen supply levels.

[0018] 2. No need for large-volume, high-power oxygen generating components. By using an oxygen storage cylinder and adjustable oxygen supply, it solves the problems of portable devices being unable to achieve high-concentration, high-flow oxygen supply and having single parameters. It uses oxygen sensors and respiratory pressure sensors to detect in real time, and the oxygen supply action is synchronized with the human breathing rhythm. With closed-loop regulation and calibration of oxygen supply, concentrated oxygen supply during inhalation ensures stable oxygen partial pressure.

[0019] 3. An oxygen sensor is installed inside the mask to monitor the oxygen concentration inside the mask. The oxygen sensor feeds back the detected oxygen concentration to the oxygen generator to increase or decrease the oxygen supply so that the air in the breathing area inside the mask reaches a preset oxygen concentration.

[0020] 4. While automatically adjusting the oxygen supply concentration, the equipment can be pre-adjusted. By pulling the adjusting rope, the conical adjusting plate and the conical plate can be moved to achieve reverse synchronous adjustment of the oxygen supply path and the natural air intake path. Increasing the oxygen intake will automatically reduce the air intake, and decreasing the oxygen intake will simultaneously increase the air intake. The oxygen and air intake can be adjusted according to the altitude and individual blood oxygen status to flexibly increase the oxygen partial pressure of the inhaled gas and keep the user's physiological equivalent altitude stably below the 3000m safety line, effectively avoiding hypoxemia, high-altitude pulmonary edema and other diseases.

[0021] 5. The sealing adjustment plate on the square air intake channel changes the size of the channel opening synchronously with the traction rope. It can not only adjust the total air intake volume as needed, but also reduce the channel gap when the opening is small to prevent gravel and large pieces of slag from entering the protective cover. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the rear structure of a respiratory protective device; Figure 2 This is a schematic diagram of the structure of a respiratory protective device; Figure 3 This is a schematic cross-sectional view of a respiratory protective device. Figure 4 For respiratory protective devices Figure 3 Schematic diagram of the structure at point A; Figure 5 For respiratory protective devices Figure 4 Schematic diagram of the structure at point B; Figure 6 A schematic diagram of the square air intake channel structure on the protective cover of a respiratory protective device; Figure 7 For respiratory protective devices Figure 6 A schematic diagram of the cross-sectional structure; Figure 8 For respiratory protective devices Figure 7 A schematic diagram of the structure at point C.

[0023] In the diagram: 1. Mask; 3. Exhalation valve; 300. Exhalation diaphragm; 4. Inhalation valve; 101. Inhalation diaphragm; 2. Connector; 6. Oxygen tubing; 201. Conical oxygen inlet; 7. Conical adjusting plate; 8. Traction adjusting rope; 9. Air hole; 901. Inlet diaphragm; 902. Conical block; 903. Conical plate; 905. Traction auxiliary rope; 202. Slide groove; 701. Return spring; 702. Slide rod; 904. Spring; 5. Protective cover; 10. Adjusting ring; 11. Locking bolt; 501. Triangular air inlet channel; 503. Square air inlet channel; 504. Blocking adjusting plate; 506. Pull rope; 505. Return spring; 502. Conical sleeve; 601. Conical block. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0025] Example 1: Refer to Figure 1-5 A respiratory protection device for high-altitude environments includes a mask 1, with an exhalation valve 3 having an exhalation diaphragm 300 and an inhalation valve 4 having an inhalation diaphragm 101 connected to the mask 1. It also includes an oxygen generator, an oxygen storage cylinder, a respiratory detection sensor module, a solenoid valve, and a main control module. The respiratory detection sensor module includes an oxygen sensor and a respiratory pressure sensor installed inside the mask 1 to monitor the oxygen concentration within the mask. The solenoid valve is connected to the oxygen supply line between the oxygen storage cylinder and the mask 1. The oxygen sensor and respiratory pressure sensor identify the user's breathing state at the start and end of inhalation and upload the data to the main control module in real time. The main control module receives the real-time respiratory signals from the oxygen sensor and respiratory pressure sensor, determines the user's breathing condition, and outputs corresponding control signals to control the on / off state of the solenoid valve and the opening degree of the solenoid valve, thereby achieving oxygen storage shutdown during exhalation, oxygen supply activation during inhalation, and adjustment of the oxygen supply concentration.

[0026] The inhalation valve 4 is connected to a connector 2 for connecting to the oxygen tube 6. The connector 2 has a conical oxygen inlet 201 that communicates with the inhalation valve 4. A conical adjusting plate 7 is slidably connected in the conical oxygen inlet 201. A traction adjusting rope 8 is connected to the conical adjusting plate 7. After the operator wears the mask 1, when exhaling, the gas pushes open the exhalation diaphragm 300 at the exhalation valve 3 to discharge waste gas. When inhaling, the exhalation diaphragm closes and the inhalation diaphragm 101 opens, and the mixed gas enters the mask.

[0027] The connector 2 has an air hole 9 that communicates with the intake valve 4. An air inlet diaphragm 901 is connected to the end of the air hole 9 that communicates with the intake valve 4. In specific implementation, multiple air holes 9 are provided and are evenly distributed on the connector 2. A conical block 902 with a conical hole is fixedly connected to the air hole 9. A conical plate 903 is connected in the conical block 902. The upper end of the conical plate 903 is connected to the traction adjustment rope 8 through the traction auxiliary rope 905.

[0028] like Figure 3 and Figure 4 As shown, the high-purity oxygen output from the oxygen generator is introduced into the conical oxygen inlet 201 of the connector 2 through the oxygen pipe 6, and natural air enters through the air hole 9.

[0029] like Figure 4 Pulling the traction adjustment rope 8 causes the conical adjustment plate 7 to slide within the conical oxygen inlet hole 201, changing the flow cross-sectional area of ​​the conical oxygen inlet hole to control the oxygen flow rate. Simultaneously, the traction adjustment rope drives the conical plate 903 through the traction auxiliary rope 905. The conical plate moves within the conical hole of the conical block 902, simultaneously changing the ventilation opening of the air hole 9, achieving reverse regulation of oxygen intake and natural air intake: when the oxygen passage is widened, the air passage is narrowed, and when the oxygen passage is narrowed, the air passage is widened. After the two gases are mixed inside the connector, they are sent into the mask for breathing through the inhalation valve 4. The air inlet membrane 901 inside the air hole closes during the exhalation phase to prevent exhaust gas inside the mask from flowing back out of the air hole.

[0030] Reference Figure 3 and Figure 4 A groove 202 is provided on the conical oxygen inlet 201. A sliding rod 701 matching the groove 202 is fixedly connected to the conical adjusting plate 7. The traction adjusting rope 8 is connected to the sliding rod 702. The groove 202 is arranged along the axial direction of the conical oxygen inlet 201. The sliding rod 701 slides inside the groove 202. The traction adjusting rope 8 pulls the sliding rod 701 to slide along the groove in a directional manner, thereby driving the conical adjusting plate 7 to move.

[0031] Reference Figure 3 A reset spring 701 is connected to the conical adjusting plate 7. The reset spring 701 is connected to the connector 2. After the traction adjusting rope 8 is released, the reset spring 702 pulls the conical adjusting plate 7 to automatically reset by its own rebound force.

[0032] Reference Figure 5 The conical plate 903 is connected to the conical block 902 via the tension spring 904. When the traction auxiliary rope 905 is tightened by the traction adjustment rope, it overcomes the elastic force of the tension spring 904 to pull the conical plate 903 to block the conical hole of the conical block 902 and reduce the air intake. After the traction auxiliary rope 905 is relaxed, the tension spring 904 contracts and pulls the conical plate 903 downward, increasing the flow cross section of the conical hole and the air intake.

[0033] Reference Figure 2 , Figure 3 and Figure 4 The intake valve 4 is connected to a protective cover 5, which is fitted onto the connector 2. An adjusting ring 10 is rotatably connected to the protective cover 5. The adjusting ring 10 is connected to the traction adjusting rope 8. A threaded locking bolt 11 is on the adjusting ring 10, and the locking end of the threaded locking bolt 11 abuts against the protective cover 5. The protective cover 5 covers the outside of the connector 2 to prevent mine gravel from hitting the connector 2. Rotating the adjusting ring 10 can pull the traction adjusting rope 8, and tightening the locking bolt 11 can lock it.

[0034] The protective cover 5 has multiple triangular air intake channels 501.

[0035] Example 2: Refer to Figure 6 , Figure 7 and Figure 8 The respiratory protection device for high-altitude environments is basically the same as in Example 1, except that the structure of the protective cover 5 is different. The protective cover 5 has a square air intake channel 503, and a blocking adjustment plate 504 is slidably connected to the square air intake channel 503. The blocking adjustment plate 504 is connected to the traction rope 8 through a pull rope 506. A return spring 505 is connected between the blocking adjustment plate 504 and the square air intake channel 503. When a large air intake is required, the pull rope 506 pulls the blocking adjustment plate 504, the opening of the square air intake channel 503 becomes larger, and the air intake is increased to facilitate air intake. When a small air intake is required, the blocking adjustment plate 504 returns to its original position, the opening of the square air intake channel 503 becomes smaller, and larger debris is prevented from entering between the connector 2 and the protective cover 5.

[0036] Example 3: Reference Figure 3 The respiratory protection device used in high-altitude environments is basically the same as that in Example 1. However, the oxygen tube 6 is threaded into the connector 2 and communicates with the conical oxygen inlet 201. The end of the oxygen tube is provided with an external thread, and the oxygen inlet interface of the connector 2 is provided with a matching internal thread. The oxygen tube 6 is screwed and locked inside the connector, and the end of the tube is precisely aligned with the conical oxygen inlet 201.

[0037] Example 4: Reference Figure 3 The respiratory protection device used in high-altitude environments is basically the same as in Example 1. The oxygen tube 6 is inserted into the connector 2 and communicates with the conical oxygen inlet 201. The protective cover 5 is threaded with a conical sleeve 502, which is fitted onto the oxygen tube 6. A conical block 601 that fits the conical sleeve 502 is fixedly fitted onto the oxygen tube 6. The oxygen tube 6 is directly inserted into the oxygen inlet of the connector to achieve quick connection. The conical sleeve 502 is screwed onto the outside of the protective cover. During the tightening of the conical sleeve, the inner wall of the conical sleeve squeezes the conical block 601 on the oxygen tube, and the oxygen tube 6 is held and fixed by the pressure of the conical surface.

[0038] A method for using a respiratory protective device in high-altitude environments includes the following steps: S1. Put on the mask 1, put on the oxygen generator and oxygen storage cylinder on your back, and connect the oxygen tube 6 of the oxygen storage cylinder to the connector 2. S2, the oxygen sensor and the breathing pressure sensor collect the user's breathing airflow / pressure signals in real time, collect oxygen concentration and oxygen supply flow data and transmit them to the main control module, the main control module determines the user's current breathing status in real time; S3. If the user finishes exhaling and enters the inhalation phase, the main control module controls the pipeline solenoid valve to open the oxygen supply pipeline, and the oxygen storage cylinder releases the reserve oxygen at the corresponding level to supply oxygen to the user. When it is necessary to adjust the oxygen supply parameters, the main control module simultaneously controls and corrects the working parameters of the oxygen generator, and synchronously adjusts the opening degree of the control solenoid valve to increase or decrease the oxygen supply. Combined with sensor feedback data, the control is calibrated to ensure that the air in the breathing zone inside the mask reaches the preset oxygen concentration. S4. Repeat the above process repeatedly, and the oxygen generator will work in a steady state. Only the oxygen supply line will be intermittently opened and closed according to the breathing rhythm, so as to achieve the effect of energy saving and long-lasting synchronous oxygen supply.

[0039] S5. While automatically adjusting the oxygen supply concentration, the equipment can be pre-adjusted. When it is necessary to reduce the oxygen intake and increase the air intake, by pulling the traction adjustment rope 8, the conical adjustment plate 7 moves to the narrow end of the conical oxygen inlet hole 201 to reduce the oxygen intake. At the same time, the traction auxiliary rope 905 loosens and the conical plate 903 moves to the wide end of the conical hole to increase the air intake. When it is necessary to increase the oxygen intake or decrease the air intake, loosen the traction adjustment rope 8, and the conical adjustment plate 7 moves towards the wide end of the conical oxygen intake hole 201 to increase the oxygen intake. At the same time, the traction auxiliary rope 905 is pulled by the traction adjustment rope 8, and the conical plate 903 moves towards the narrow end of the conical hole to decrease the air intake.

[0040] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A respiratory protection device for use in high-altitude environments, comprising a face mask (1), wherein the face mask (1) is connected to an exhalation valve (3) with an exhalation diaphragm (300) and an inhalation valve (4) with an inhalation diaphragm (101), and further comprising an oxygen generator, an oxygen storage cylinder, a respiratory detection sensor module, a solenoid valve, and a main control module, characterized in that, The respiratory detection sensing module includes an oxygen sensor and a respiratory pressure sensor installed inside the mask (1) to monitor the oxygen concentration inside the mask. The solenoid valve is connected to the oxygen supply pipeline between the oxygen storage cylinder and the mask (1). The oxygen sensor and the respiratory pressure sensor identify the user's breathing state at the beginning and end of inhalation and upload it to the main control module in real time. The main control module receives the real-time respiratory signals from the oxygen sensor and the respiratory pressure sensor, determines the user's breathing condition, outputs corresponding control signals, controls the opening and closing of the solenoid valve, and controls the opening degree of the solenoid valve to realize the deactivation of oxygen storage during exhalation, the activation of oxygen supply during inhalation, and the adjustment of oxygen supply concentration. The inhalation valve (4) is connected to a connector (2) for connecting an oxygen tube (6). The connector (2) has a conical oxygen inlet hole (201) that communicates with the inhalation valve (4). A conical adjusting plate (7) is slidably connected in the conical oxygen inlet hole (201). A traction adjusting rope (8) is connected to the conical adjusting plate (7). The connector (2) has an air hole (9) that communicates with the intake valve (4). An air inlet diaphragm (901) is connected to the end of the air hole (9) that communicates with the intake valve (4). A conical block (902) with a conical hole is fixedly connected to the air hole (9). A conical plate (903) is connected in the conical block (902). The upper end of the conical plate (903) is connected to the traction adjustment rope (8) through the traction auxiliary rope (905).

2. The respiratory protective device for high-altitude environments according to claim 1, characterized in that, The conical oxygen inlet (201) is provided with a sliding groove (202), and a sliding rod (701) matching the sliding groove (202) is fixedly connected to the conical adjusting plate (7). The traction adjusting rope (8) is connected to the sliding rod (702).

3. The respiratory protective device for high-altitude environments according to claim 2, characterized in that, A reset spring (701) is connected to the conical adjusting plate (7), and the reset spring (701) is connected to the connector (2).

4. The respiratory protective device for high-altitude environments according to claim 1, characterized in that, The conical plate (903) is connected to the conical block (902) by a tension spring (904).

5. The respiratory protective device for high-altitude environments according to any one of claims 1-4, characterized in that, The air intake valve (4) is connected to a protective cover (5), which is fitted onto the connector (2). An adjusting ring (10) is rotatably connected to the protective cover (5), and the adjusting ring (10) is connected to the traction adjusting rope (8).

6. The respiratory protective device for high-altitude environments according to claim 5, characterized in that, The protective cover (5) has multiple triangular air intake channels (501).

7. The respiratory protective device for high-altitude environments according to claim 5, characterized in that, The protective cover (5) has a square air intake channel (503), and a blocking adjustment plate (504) is slidably connected to the square air intake channel (503). The blocking adjustment plate (504) is connected to the traction rope (8) through a pull rope (506). A return spring (505) is connected between the blocking adjustment plate (504) and the square air intake channel (503).

8. The respiratory protective device for high-altitude environments according to claim 5, characterized in that, The oxygen tube (6) is threaded into the connector (2) and communicates with the conical oxygen inlet (201).

9. The respiratory protective device for high-altitude environments according to claim 5, characterized in that, The oxygen tube (6) is inserted into the connector (2) and communicates with the conical oxygen inlet (201). The protective cover (5) is threaded with a conical sleeve (502). The conical sleeve (502) is fitted onto the oxygen tube (6). A conical block (601) that fits into the conical sleeve (502) is fixedly fitted onto the oxygen tube (6).

10. A method of using the respiratory protective device for high-altitude environments as described in claim 5, characterized in that, Includes the following steps: S1. Put on the mask (1), put on the oxygen generator and oxygen storage cylinder on your back, and connect the oxygen tube (6) of the oxygen storage cylinder to the connector (2). S2, the oxygen sensor and the breathing pressure sensor collect the user's breathing airflow / pressure signals in real time, collect oxygen concentration and oxygen supply flow data and transmit them to the main control module, the main control module determines the user's current breathing status in real time; S3. If the user finishes exhaling and enters the inhalation phase, the main control module controls the pipeline solenoid valve to open the oxygen supply pipeline, and the oxygen storage cylinder releases the reserve oxygen at the corresponding level to supply oxygen to the user. When it is necessary to adjust the oxygen supply parameters, the main control module simultaneously controls and corrects the working parameters of the oxygen generator, and synchronously adjusts the opening degree of the control solenoid valve to increase or decrease the oxygen supply. Combined with sensor feedback data, the control is calibrated to ensure that the air in the breathing zone inside the mask reaches the preset oxygen concentration. S4. Repeat the above process repeatedly, and the oxygen generator will work in a steady state. Only the oxygen supply line will be intermittently opened and closed according to the breathing rhythm, so as to achieve the effect of energy saving and long-lasting synchronous oxygen supply.

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