A pressurized filling oxygen cylinder and respirator structure

Abstract

The present application relates to the technical field of medical respirator, especially to a pressurized filling oxygen cylinder and respirator structure, which comprises a connecting pipe, the front end of the connecting pipe is fixedly connected with a bottle connecting pipe, the front end of the bottle connecting pipe is connected with the port of an oxygen cylinder, the outer surface of the connecting pipe is connected with an air outlet pipe, the lower end of the connecting pipe is inserted with a humidification bottle, a regulating valve mechanism is arranged between the connecting pipe and the humidification bottle, the lower end surface of the humidification bottle is provided with an inner recessed section, the inner side of the inner recessed section is threadedly inserted with an inner plug, the upper surface of the inner plug is rotatably embedded with a clamping ball in the middle, the inner side of the clamping ball is provided with a cylindrical through hole, and the upper surface of the inner plug is connected with a curved cover through a pulling mechanism, the present application can supplement sterile distilled water during use, does not need to pause oxygen supply, is convenient to use, is efficient in water supplement, and can avoid water leakage during water supplement.

Description

Technical Field

[0001] This invention relates to the field of medical respirator technology, and more particularly to a pressurized oxygen cylinder and respirator structure. Background Technology

[0002] The buoy-type oxygen inhaler is a device used in the medical field to provide stable oxygen to patients with hypoxia. Its background is closely related to the treatment needs of respiratory diseases and the optimization of the practicality of medical equipment: it realizes the visual adjustment of flow rate based on the buoy balance principle, and is lightweight and easy to operate. It is suitable for hospital emergency and ward treatment scenarios, and can also meet the long-term oxygen therapy needs of families.

[0003] Pressurized oxygen cylinders used in conjunction with buoy-type oxygen inhalers are high-pressure containers filled after oxygen has been pressurized to 150-200 atmospheres using a multi-stage compression filling machine. In existing technology, because the humidification bottle is connected to the oxygen tubing and the pressurized oxygen cylinder, improper operation when adding water midway can lead to water backflow into the oxygen tubing, clogging the airway, or introducing bacteria that contaminate the humidification solution. Therefore, the current operating procedure is typically: first, turn off the oxygen cylinder's gas supply switch, disconnect the humidification bottle from the oxygen tubing, then add sterile distilled water, then reconnect the tubing and turn the gas supply back on, while simultaneously checking for leaks and blockages. This entire process is cumbersome and inconvenient.

[0004] An existing Chinese utility model patent for an oxygen humidification bottle with easy water addition (application number CN201820341592.7) includes a bottle body, a water inlet tube, a water inlet tube cap, and a tube clamp. The tube clamp is connected to the bottle body. The water inlet tube includes a flexible section and a rigid section connected to each other. The flexible section is connected to the upper part of the bottle body, and the rigid section is secured in the tube clamp and can be removed. The water inlet tube cap is placed on the end of the rigid section. By removing the rigid section from the tube clamp, then pointing the rigid section upwards and removing the cap, water can be added to the oxygen humidification bottle from the end of the rigid section. Because of the flexible section, the direction of the water inlet tube can be freely changed, allowing the rigid section to avoid obstruction from the oxygen inhaler body, thus providing the advantage of convenient water addition. Although it has a water-adding solution, it cannot be used to add water during use. It still requires operations such as shutting off the oxygen cylinder, which is inconvenient. Therefore, a pressurized filling oxygen cylinder and respirator structure is proposed. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of the prior art by proposing a pressurized filling oxygen cylinder and respirator structure.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a pressurized oxygen cylinder and respirator structure, including a connecting pipe, a receiving pipe fixedly connected to the front end of the connecting pipe, the front end of the receiving pipe being connected to the port of the oxygen cylinder, an outlet pipe connected to the outer surface of the connecting pipe, a humidification bottle inserted into the lower end of the connecting pipe, a regulating valve mechanism provided between the connecting pipe and the humidification bottle, a concave section provided on the lower end face of the humidification bottle, an inner plug block threaded into the inner side of the concave section, a locking ball rotatably embedded in the middle of the upper surface of the inner plug block, a cylindrical through hole opened on the inner side of the locking ball, a curved cover connected to the upper surface of the inner plug block by a pulling mechanism, and a curved top that is in contact with the upper surface of the locking ball on the lower surface of the curved cover;

[0007] The upper end of the syringe passes vertically through the inserted ball. After tilting, water is injected into the humidification bottle. When removing the syringe, rotate it to a vertical position and then pull it out.

[0008] Preferably, the lower end of the inner plug is provided with a limiting edge, and the lower end of the inner surface of the inner plug is provided with anti-slip texture.

[0009] Preferably, the pulling mechanism includes a plurality of sliding grooves formed on the upper surface of the inner plug, and a plurality of L-shaped blocks are fixedly connected to the lower surface of the curved cover. The L-shaped blocks are slidably inserted into the inner side of the sliding grooves, and magnetic blocks are fixedly embedded on the lower surface of the L-shaped blocks and the inner bottom surface of the sliding grooves, respectively.

[0010] Preferably, a rotating shaft is fixedly connected to each of the two sides of the inserted ball, a rotating plate is fixedly connected to the front surface of the rotating shaft, a sealing plate is fixedly installed on the inner top surface of the inner plug, a plurality of locking bolts slide through the lower surface of the sealing plate, the upper end of the locking bolts is threaded into the inner top surface of the inner plug, the rotating shaft is rotatably fitted between the sealing plate and the inner top surface of the inner plug, an arc-shaped groove is formed between the sealing plate and the inner plug, the rotating plate is embedded in the inner side of the arc-shaped groove, a return spring is fixedly connected to the inner top surface of the arc-shaped groove, and the lower end of the return spring is in contact with the rotating plate.

[0011] Preferably, the control valve mechanism includes a spherical shell fixedly connected to the rear end of the bottle inlet tube, a ball valve stem rotatably inserted into the inner side of the spherical shell, a three-way port opened on the inner side of the ball valve stem, an upper through pipe and a vent pipe fixedly connected to the upper and lower surfaces of the spherical shell respectively, and a flow metering mechanism provided at the upper end of the upper through pipe.

[0012] Preferably, the upper end of the humidification bottle is fixedly connected to a connector, the connector is threaded into the lower port of the connecting tube, a fixing plug is inserted into the inner side of the connector, an air outlet is opened through one side of the upper surface of the fixing plug, a vent tube is fixedly embedded in the lower surface of the fixing plug, a humidification head is provided at the lower end of the vent tube, and the lower end of the vent tube is slidably inserted into the upper port of the vent tube.

[0013] Preferably, the flow metering mechanism includes a flow meter fixedly embedded in the upper end of the connecting pipe, a float is provided inside the flow meter, and the lower end of the flow meter is connected to the upper end of the upper pipe.

[0014] Preferably, a fixed cylinder is fixedly connected to the rear surface of the connecting pipe, the rear end of the ball valve stem rotatably passes through the inner side of the fixed cylinder, and a rotating head is fixedly connected to the rear end of the ball valve stem.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In use, the present invention involves filling the humidification bottle with an appropriate amount of water. When water needs to be replenished, sterile distilled water is added using a syringe. The end of the syringe is vertically inserted into the retaining ball, which will lift the curved cover. Since the syringe is inserted into the retaining ball, leakage is prevented. The user then slightly rotates the syringe, causing the retaining ball to rotate relative to the pivot. The rotating plate rotates along the inner side of the arc groove and squeezes the return spring. After rotation, the upper end of the syringe slides out from the inner side of the curved cover, so the upper end is no longer blocked. Then, squeezing the syringe will replenish the distilled water into the humidification bottle. Therefore, sterile distilled water can be replenished during use without interrupting oxygen supply, making it convenient to use and highly efficient in replenishing water.

[0017] 2. After water replenishment is completed, the syringe is rotated back to the vertical position. At this time, the upper port of the syringe contacts the inner wall of the curved top, thus sealing the syringe port. Then, the syringe is slowly moved down and pulled out. During this process, the curved top covers the surface of the inserted ball again, achieving a sealing effect and preventing water in the humidification bottle from leaking out of the inserted ball. Since the upper port of the syringe contacts the inner wall of the curved top during this process, water will not accumulate at the contact point, thus avoiding leakage. Attached Figure Description

[0018] Figure 1 This is a partial structural diagram of an oxygen cylinder and respirator structure for pressurized filling according to the present invention;

[0019] Figure 2 This is a cross-sectional view of the structure of a pressurized oxygen cylinder and respirator according to the present invention;

[0020] Figure 3This invention relates to a pressurized oxygen cylinder and respirator structure. Figure 2 Enlarged view of point A in the middle;

[0021] Figure 4 This is a cross-sectional view of the inner plug of a pressurized oxygen cylinder and respirator structure according to the present invention.

[0022] Figure 5 This is a cross-sectional view of the sealing plate of a pressurized oxygen cylinder and respirator structure according to the present invention;

[0023] Figure 6 This invention relates to a pressurized oxygen cylinder and respirator structure. Figure 5 Enlarged view at point B in the middle;

[0024] Figure 7 This is a schematic diagram of the insertion point of the pressurized oxygen cylinder and respirator structure according to the present invention.

[0025] Figure 8 This is a schematic diagram of the curved cap of a pressurized oxygen cylinder and respirator structure according to the present invention.

[0026] Figure 9 This is a partial cross-sectional view of the humidification bottle during use of the pressurized oxygen cylinder and respirator structure of the present invention.

[0027] Figure 10 This is a schematic diagram of the overall structure of an oxygen cylinder and respirator for pressurized filling according to the present invention.

[0028] The components are as follows: 1. Connecting pipe; 2. Bottle receiving pipe; 3. Gas outlet pipe; 4. Humidification bottle; 5. Concave section; 6. Inner stopper block; 7. Anti-slip texture; 8. Limiting edge; 9. Curved cover; 10. Sliding groove; 11. L-shaped block; 12. Magnetic block; 13. Snap-in ball; 14. Rotating shaft; 15. Rotating plate; 16. Return spring; 17. Arc groove; 18. Sealing plate; 19. Locking bolt; 20. Curved top; 21. Flow meter; 22. Spherical shell; 23. Top passage pipe; 24. Buoy; 25. Ball head valve stem; 26. Rotating head; 27. T-port; 28. Fixed cylinder; 29. ​​Plug connector; 30. Fixed plug; 31. Gas outlet; 32. Vent pipe; 33. Gas guide pipe; 34. Humidification head; 35. Oxygen cylinder; 36. Syringe. Detailed Implementation

[0029] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0030] like Figures 1-10As shown, a pressurized oxygen cylinder and respirator structure includes a connecting pipe 1, a receiving pipe 2 fixedly connected to the front end of the connecting pipe 1, the front end of the receiving pipe 2 being connected to the port of the oxygen cylinder 35, an outlet pipe 3 connected to the outer surface of the connecting pipe 1, a humidification bottle 4 inserted into the lower end of the connecting pipe 1, a regulating valve mechanism provided between the connecting pipe 1 and the humidification bottle 4, a concave section 5 provided on the lower end face of the humidification bottle 4, an inner plug 6 threadedly inserted into the inner side of the concave section 5, a locking ball 13 rotatably embedded in the middle of the upper surface of the inner plug 6, a cylindrical through hole opened on the inner side of the locking ball 13, a curved cover 9 connected to the upper surface of the inner plug 6 by a pulling mechanism, and a curved top 20 that is in contact with the upper surface of the locking ball 13 on the lower surface of the curved cover 9.

[0031] The upper end of the syringe 36 passes vertically through the inserted ball 13, and after tilting, water is injected into the humidification bottle 4. When removing it, the syringe 36 is rotated to a vertical position and then pulled out.

[0032] like Figure 4 , Figure 5 As shown, the lower end of the inner stopper 6 is provided with a limiting edge 8, and the lower end of the inner surface of the inner stopper 6 is provided with anti-slip texture 7. The limiting edge 8 acts as a barrier, preventing excessive upward movement when rotating the inner stopper 6, while the anti-slip texture 7 facilitates the user's rotation of the inner stopper 6. In high-risk scenarios, after each oxygen inhalation use, the water needs to be changed and disinfected. Unscrew the inner stopper 6 from the humidification bottle 4, empty the old solution, soak the humidification bottle 4 and the inner stopper 6 in a chlorine-containing disinfectant for about 30 minutes, then rinse thoroughly with sterile distilled water, drain, and refill with new sterile distilled water. In home scenarios, disinfection is not necessary after each water change; disinfection can be performed once or twice a week. Disinfection methods include boiling or wiping the inner wall with medical alcohol and then air drying. Avoid using strong cleaning agents.

[0033] like Figure 4 As shown, the pulling mechanism includes several sliding grooves 10 formed on the upper surface of the inner plug block 6. Several L-shaped blocks 11 are fixedly connected to the lower surface of the curved cover 9. The L-shaped blocks 11 are slidably inserted into the inner side of the sliding grooves 10. Magnetic blocks 12 are fixedly embedded in the lower surface of the L-shaped blocks 11 and the inner bottom surface of the sliding grooves 10, respectively. The opposite poles of the upper and lower magnetic blocks 12 attract each other, so that the L-shaped blocks 11 always have a downward tendency. When the curved cover 9 is not pushed up, it can be moved downward by magnetic attraction. The upper surface of the curved cover 9 is curved, which guides oxygen to disperse in all directions, thereby ensuring that oxygen and water are in full contact and achieving the purpose of full wetting.

[0034] like Figure 5 , Figure 6 , Figure 7As shown, rotating shafts 14 are fixedly connected to both sides of the inserted ball 13. A rotating plate 15 is fixedly connected to the front surface of the rotating shaft 14. A sealing plate 18 is fixedly installed on the inner top surface of the inner plug 6. Several locking bolts 19 slide through the lower surface of the sealing plate 18. The upper end of the locking bolt 19 is threaded into the inner top surface of the inner plug 6. The rotating shaft 14 is rotatably fitted between the sealing plate 18 and the inner top surface of the inner plug 6. An arc-shaped groove 17 is opened between the sealing plate 18 and the inner plug 6. The rotating plate 15 is embedded in the inner side of the arc-shaped groove 17. A return spring 16 is fixedly connected to the inner top surface of the arc-shaped groove 17. The lower end of the return spring 16 is in contact with the rotating plate 15. During assembly, the upper end of the return spring 16 is first fixedly connected to the inner top surface of the arc-shaped groove 17. Then, the locking ball 13 is inserted into the inner top surface of the inner plug block 6, and the rotating plate 15 is inserted into the inner side of the arc-shaped groove 17. After that, the sealing plate 18 is closed, and the locking bolt 19 is tightened to cover the locking ball 13 and the rotating plate 15, thus completing the assembly of this part of the mechanism. When the locking ball 13 rotates, the rotating shaft 14 and the rotating plate 15 rotate simultaneously, compressing the return spring 16. The elastic force of the return spring 16 can guide the locking ball 13 to return to its original position, so that the axial direction of the through hole of the locking ball 13 remains vertical.

[0035] like Figure 2 , Figure 3 As shown, the control valve mechanism includes a spherical shell 22 fixedly connected to the rear end of the inlet pipe 2. A ball valve stem 25 is rotatably inserted into the inner side of the spherical shell 22. A three-way port 27 is opened on the inner side of the ball valve stem 25. An upper passage pipe 23 and a vent pipe 32 are fixedly connected to the upper and lower surfaces of the spherical shell 22, respectively. A flow metering mechanism is provided at the upper end of the upper passage pipe 23. By rotating the ball valve stem 25, the degree of overlap between the upper and lower ends of the three-way port 27 and the upper passage pipe 23 and the vent pipe 32 changes, thereby achieving the purpose of regulating the flow rate. It should be noted that the port diameters of the upper passage pipe 23 and the vent pipe 32 are the same to ensure that the air flow rate is consistent when the ball valve stem 25 is rotated.

[0036] like Figure 2 , Figure 3 As shown, a connector 29 is fixedly connected to the upper end of the humidification bottle 4. The connector 29 is threaded into the lower port of the connecting tube 1. A fixing plug 30 is inserted into the inner side of the connector 29. An air outlet 31 is opened through one side of the upper surface of the fixing plug 30. A gas guide tube 33 is fixedly embedded in the lower surface of the fixing plug 30. A humidification head 34 is provided at the lower end of the gas guide tube 33. Several air holes are arrayed on the lower surface of the humidification head 34 to ensure that oxygen can be evenly dispersed into the inner side of the humidification bottle 4. The lower end of the vent tube 32 is slidably inserted into the upper port of the gas guide tube 33. The fixing plug 30 is made of rubber. When a certain external force is applied, the fixing plug 30 can be pulled out for easy subsequent disinfection and maintenance operations.

[0037] like Figure 1 , Figure 2 , Figure 3 As shown, the flow metering mechanism includes a flow meter 21 fixedly embedded in the upper end of the connecting pipe 1. A float 24 is provided inside the flow meter 21, and the lower end of the flow meter 21 is connected to the upper end of the upper pipe 23. In the oxygen inhalation scenario, the flow rate of the outlet pipe 3 can be directly correlated with the reading of the flow meter 21. Oxygen is introduced into the upper pipe 23, and a certain air pressure lifts the float 24. The dynamic pressure generated by the gas flow velocity, the gravity of the float 24, and the buoyancy are in balance. The dynamic pressure generated by the gas flow velocity indirectly affects the equilibrium position by changing the gas density. Therefore, the flow meter 21 can read the gas flow rate through simple position indication. As a common mechanism in respirators, it will not be described in detail here.

[0038] A fixed cylinder 28 is fixedly connected to the rear surface of the connecting pipe 1. The rear end of the ball valve stem 25 rotates through the inner side of the fixed cylinder 28, and a rotating head 26 is fixedly connected to the rear end of the ball valve stem 25. The rotating head 26 facilitates the user to rotate the ball valve stem 25, and the fixed cylinder 28 wraps around the surface of the ball valve stem 25 to prevent air leakage.

[0039] During use, an appropriate amount of water is filled into the humidification bottle 4. When water needs to be added, sterile distilled water is added through the syringe 36. The end of the syringe 36 is vertically inserted into the retaining ball 13, which will lift the curved cover 9. Since the syringe 36 is inserted into the retaining ball 13, leakage is prevented. Then, the user slightly rotates the syringe 36, causing the retaining ball 13 to rotate relative to the rotating shaft 14. The rotating plate 15 rotates along the inner side of the arc groove 17 and squeezes the return spring 16. After rotation, the upper end of the syringe 36 slides out from the inner side of the curved cover 9, so the upper end is no longer blocked. This is the actual state. Figure 9 As shown, squeezing the syringe 36 will then replenish the distilled water into the humidification bottle 4. Therefore, sterile distilled water can be replenished during use without interrupting oxygen supply, making it convenient to use and highly efficient in hydration.

[0040] After water replenishment is completed, rotate the syringe 36 back to a vertical position. At this time, the upper port of the syringe 36 contacts the inner wall of the curved top 20, thus sealing the port of the syringe 36. Then, slowly move the syringe 36 down and pull it out. During this process, the curved top 20 covers the surface of the insert ball 13 again, achieving a sealing effect and preventing water in the humidification bottle 4 from leaking out of the insert ball 13. Since the upper port of the syringe 36 contacts the inner wall of the curved top 20 during this process, water will not accumulate at the contact point, thus avoiding leakage.

[0041] During use, oxygen from oxygen cylinder 35 enters through inlet tube 2 and then through three-way port 27 into upper tube 23 and ventilation tube 32 respectively. Oxygen from ventilation tube 32 reaches humidification head 34 through air guide tube 33 and is released. After being moistened by water in humidification bottle 4, oxygen is discharged through air outlet 31 and then through air outlet tube 3 for users to inhale oxygen.

[0042] During oxygen inhalation, the flow rate of the outlet pipe 3 can be directly correlated with the reading of the flow meter 21. Oxygen is introduced into the upper pipe 23, and a certain air pressure lifts the float 24. The dynamic pressure generated by the gas flow rate, the gravity of the float 24, and the buoyancy are in balance. The dynamic pressure generated by the gas flow rate indirectly affects the equilibrium position by changing the gas density. The user can read the gas flow rate through the position indicator on the flow meter 21.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A pressurized oxygen cylinder and respirator structure, comprising a connecting pipe (1), characterized in that: The front end of the connecting pipe (1) is fixedly connected to the bottle receiving pipe (2), the front end of the bottle receiving pipe (2) is connected to the port of the oxygen cylinder (35), the outer surface of the connecting pipe (1) is connected to the gas outlet pipe (3), the lower end of the connecting pipe (1) is inserted with a humidification bottle (4), a control valve mechanism is provided between the connecting pipe (1) and the humidification bottle (4), the lower end face of the humidification bottle (4) is provided with a concave section (5), the inner side of the concave section (5) is threaded with an inner plug (6), the middle of the upper surface of the inner plug (6) is rotatably fitted with a locking ball (13), the inner side of the locking ball (13) is provided with a cylindrical through hole, the upper surface of the inner plug (6) is connected with a curved cover (9) through a pulling mechanism, the lower surface of the curved cover (9) is provided with a curved top (20) that is in contact with the upper surface of the locking ball (13). The upper end of the syringe (36) passes vertically through the inserted ball (13), and after tilting, water is injected into the humidification bottle (4). When taking it out, the syringe (36) is rotated to a vertical position and then pulled out.

2. The oxygen cylinder and respirator structure for pressurized filling according to claim 1, characterized in that: The lower end of the inner plug (6) is provided with a limiting edge (8), and the lower end of the inner surface of the inner plug (6) is provided with anti-slip texture (7).

3. The oxygen cylinder and respirator structure for pressurized filling according to claim 1, characterized in that: The pulling mechanism includes several sliding grooves (10) formed on the upper surface of the inner plug (6), and several L-shaped blocks (11) are fixedly connected to the lower surface of the curved cover (9). The L-shaped blocks (11) are slidably inserted into the inner side of the sliding grooves (10), and magnetic blocks (12) are fixedly embedded on the lower surface of the L-shaped blocks (11) and the inner bottom surface of the sliding grooves (10).

4. The structure of a pressurized oxygen cylinder and respirator according to claim 1, characterized in that: The two sides of the insert ball (13) are respectively fixedly connected to a rotating shaft (14). The front surface of the rotating shaft (14) is fixedly connected to a rotating plate (15). The inner top surface of the inner plug (6) is fixedly installed with a sealing plate (18). Several locking bolts (19) slide through the lower surface of the sealing plate (18). The upper end of the locking bolt (19) is threaded into the inner top surface of the inner plug (6). The rotating shaft (14) is rotatably fitted between the sealing plate (18) and the inner top surface of the inner plug (6). The sealing plate (18) and the inner plug (6) are provided with an arc groove (17). The rotating plate (15) is embedded in the inner side of the arc groove (17). The inner top surface of the arc groove (17) is fixedly connected to a return spring (16). The lower end of the return spring (16) is in contact with the rotating plate (15).

5. The structure of a pressurized oxygen cylinder and respirator according to claim 1, characterized in that: The regulating valve mechanism includes a spherical shell (22) fixedly connected to the rear end of the bottle inlet tube (2). A ball valve stem (25) is rotatably inserted into the inner side of the spherical shell (22). A three-way port (27) is opened on the inner side of the ball valve stem (25). An upper pipe (23) and a vent pipe (32) are fixedly connected to the upper and lower surfaces of the spherical shell (22), respectively. A flow metering mechanism is provided at the upper end of the upper pipe (23).

6. The structure of a pressurized oxygen cylinder and respirator according to claim 5, characterized in that: The upper end of the humidification bottle (4) is fixedly connected to a connector (29). The connector (29) is threaded into the lower port of the connecting tube (1). A fixing plug (30) is inserted into the inner side of the connector (29). An air outlet (31) is opened through one side of the upper surface of the fixing plug (30). A gas guide tube (33) is fixedly embedded on the lower surface of the fixing plug (30). A humidification head (34) is provided at the lower end of the gas guide tube (33). The lower end of the vent tube (32) is slidably inserted into the upper port of the gas guide tube (33).

7. The oxygen cylinder and respirator structure for pressurized filling according to claim 5, characterized in that: The flow metering mechanism includes a flow meter (21) fixedly embedded in the upper end of the connecting pipe (1), a float (24) is provided on the inner side of the flow meter (21), and the lower end of the flow meter (21) is connected to the upper end of the upper pipe (23).

8. The structure of a pressurized oxygen cylinder and respirator according to claim 5, characterized in that: A fixed cylinder (28) is fixedly connected to the rear surface of the connecting pipe (1), and the rear end of the ball valve stem (25) rotates through the inner side of the fixed cylinder (28). A rotating head (26) is fixedly connected to the rear end of the ball valve stem (25).

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