Breathing pressure control valve
By designing a breathing pressure control valve with valve body, valve core, and spring in the airflow valve, the problems of excessive and unstable air pressure at the outlet of the airflow valve are solved, and the stability and full utilization of the air source output are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-19
- Publication Date
- 2026-03-27
AI Technical Summary
When the air pressure in the air source container is high, the outlet air pressure of the traditional air flow valve is too high and the air pressure stability is poor, resulting in unstable air source consumption.
The valve body consists of a valve body, a valve core, a second spring fitted onto the valve core, a connector at the bottom of the valve body, and a valve cover at the top of the valve body. The valve body has an airflow channel and a bypass channel at its upper and lower ends, respectively. The valve core moves up and down to adjust the airflow. The spring and piston assembly work together to stabilize the output air pressure of the airflow channel.
It achieves relatively stable gas supply output, avoids excessive gas consumption, makes full use of gas supply, and improves the problem of gas pressure fluctuation.
Smart Images
Figure CN224050155U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a breathing pressure control valve technical field, concretely relates to a breathing pressure control valve. BACKGROUND
[0002] The gas source container usually comprises a bottle body, a sealing cover arranged at the bottle opening end of the bottle body, a sealing ring arranged between the bottle body and the sealing cover, and a press-out gas valve nozzle arranged on the sealing cover. The gas source container is filled with compressed gas, and the press-out gas valve nozzle can be pressed to allow the gas source to be discharged from the valve nozzle. The gas source is, for example, oxygen required for breathing, and the gas source container is, for example, a portable oxygen cylinder.
[0003] The conventional airflow valve is fixedly installed on the sealing cover by means of the base and is used to press the valve nozzle, so that the valve nozzle continuously outputs the gas source to the airflow valve. However, the gas source container filled with compressed gas has sufficient gas amount and large gas pressure when in use. If the outlet of the airflow valve is blocked or the outlet airflow is too large, the outlet gas pressure of the airflow valve is likely to be too large, and the gas pressure stability is poor. SUMMARY
[0004] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the utility model is to provide a breathing pressure control valve.
[0005] The utility model discloses a breathing pressure control valve, including valve body, valve core, the second spring of the needle end of casing of valve core, the connecting head connected to the bottom of valve body and the gas valve cover of cover of valve body top, the valve body is opened gas flow passage and bypass channel, the upper and lower ends of valve body are opened first cavity and second cavity respectively, the connecting head, second cavity and gas flow passage are communicated in proper order along the conveying direction of gas source, the both ends of bypass channel are communicated with the top side of first cavity and gas flow passage respectively, the both ends of second spring are respectively abutted on valve core and connecting head, valve core is set up in first cavity and penetrates the bottom of first cavity and is driven to descend, the needle end of valve core is used for temporarily blocking the gas source to enter second cavity, when the gas source is connected into connecting head, the gas pressure of gas flow passage is too large, a part of the gas source enters first cavity along bypass channel and is used for driving valve core to descend, and the needle end of valve core is temporarily blocked to enter second cavity.
[0006] The top of connecting head is opened and has a piston cavity, the breathing pressure control valve further includes a first spring, and a piston assembly which is movably arranged in the piston cavity and communicates the connecting head and the second cavity, the both ends of the first spring are respectively abutted on the top of the second cavity and the top of the piston assembly, the second spring is clamped between the valve core and the piston assembly, the needle end of the valve core penetrates the bottom of the first cavity and is used for temporarily blocking the piston assembly to form an airflow adjusting group for adjusting the flow of the gas source.
[0007] The breathing pressure control valve further comprises a third spring arranged in the first cavity, and two ends of the third spring abut against the top of the valve core and the bottom of the valve cover respectively.
[0008] The piston assembly comprises a piston body movably arranged in the piston cavity and communicated with the connecting head, and a first sealing ring sleeved on the piston body, and an outer side wall of the first sealing ring movably abuts against an inner side wall of the piston cavity.
[0009] The piston assembly further comprises a first perforated gasket attached to the top of the piston body and communicated with the piston body, and the top pin end of the valve core cooperates with the first perforated gasket for adjusting the flow of the air source.
[0010] The second cavity is provided with a first annular groove, and a second sealing ring is clamped between the first annular groove and the connecting head; the top of the second cavity is further provided with a second annular groove, and a second perforated gasket is attached to the top of the second cavity, a third sealing ring is clamped between the second perforated gasket and the second annular groove, an inner side wall of the third sealing ring movably abuts against an outer side wall of the top pin end of the valve core, and the first spring is clamped between the second perforated gasket and the piston assembly.
[0011] An outer side wall of the valve body is provided with a balance hole communicated with the bottom of the first cavity, and the balance hole is used for balancing the air pressure gap between the valve head of the valve core and the bottom of the first cavity when the valve core moves up and down.
[0012] An annular sealing gasket is clamped between the valve body and the valve cover; a fourth sealing ring is sleeved on the valve head of the valve core, and an outer side wall of the fourth sealing ring movably abuts against an inner side wall of the first cavity.
[0013] An outer side wall of the connecting head is provided with an outer thread, and an inner side wall of the second cavity is provided with an inner thread threadedly matched with the outer thread; the connecting head is threadedly connected to the bottom of the valve body and protrudes from the bottom of the valve body.
[0014] The bottom of the connecting head is provided with an embedding cavity, and an air source pressing head is embedded in the embedding cavity, and the air source pressing head is provided with a pressing air inlet hole communicated with the connecting head.
[0015] The beneficial effects of this utility model are as follows: The breathing pressure control valve of this utility model adopts a valve body, a valve core, a second spring sleeved on the pin end of the valve core, a connector connected to the bottom of the valve body, and a valve cover on the top of the valve body. The valve body has an airflow channel and a bypass channel. The upper and lower ends of the valve body have a first cavity and a second cavity, respectively. The connector, the second cavity, and the airflow channel are connected sequentially along the air supply direction. The two ends of the bypass channel are connected to the top side of the first cavity and the airflow channel, respectively. The two ends of the second spring abut against the valve core and the connector, respectively. The valve core is movably mounted in the first cavity and penetrates the bottom of the first cavity. The pin end of the valve core is used to temporarily block the air source from entering the second cavity. When the air source is introduced into the connector, the air pressure of the air source in the airflow channel... When the pressure is too high, a portion of the air source enters the first cavity through the bypass channel and drives the valve core to press down. When the air source pressure on the upper surface of the valve core in the first cavity is greater than the sum of the air source pressure on the lower surface and the reaction force of the second spring, the valve core's pin end will block the air source from entering the second cavity. When the air source pressure on the upper surface of the valve core in the first cavity is less than the sum of the air source pressure on the lower surface and the reaction force of the second spring, the valve core's pin end is pushed upward by the reset force of the second spring, thus releasing the blockage of the air source from entering the second cavity. This achieves a temporary blockage of the air source from entering the second cavity by the valve core's pin end to stabilize the air pressure output of the airflow channel. This helps maintain a relatively stable air source volume released from the breathing pressure control valve, avoiding excessive air source consumption and facilitating full utilization of the air source. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of this utility model;
[0017] Figure 2 This is a cross-sectional schematic diagram of the present invention;
[0018] Figure 3 This is an exploded view of the present invention;
[0019] Figure 4 This is an exploded schematic diagram from another perspective of this utility model.
[0020] The attached figures are labeled as follows: 1. Valve body; 2. Valve core; 3. First spring; 4. Second spring; 5. Connector; 6. Piston assembly; 61. Piston body; 62. First sealing ring; 63. First perforated gasket; 7. Valve cover; 8. Airflow channel; 9. First cavity; 10. Second cavity; 11. Bypass channel; 12. Third spring; 13. Piston chamber; 14. First annular groove; 15. Second sealing ring; 16. Second annular groove; 17. Second perforated gasket; 18. Third sealing ring; 19. Annular sealing gasket; 20. Fourth sealing ring; 21. External thread; 22. Embedded cavity; 23. Air source pressure head; 24. Pressure inlet port; 25. Internal thread; 26. Balance air hole. DETAILED DESCRIPTION
[0021] For the convenience of those skilled in the art to understand, the utility model is further explained below in combination with examples and drawings, and the content mentioned in the implementation is not a limitation of the utility model.
[0022] As Figures 1-4 shown, a breathing pressure control valve, comprising a valve body 1, a valve core 2, a second spring 4 sleeved on the top needle end of the valve core 2, a connecting head 5 connected to the bottom of the valve body 1, and a gas valve cover 7 covered on the top of the valve body 1, the valve body 1 is provided with an airflow channel 8 and a bypass channel 11, the upper and lower ends of the valve body 1 are respectively provided with a first cavity 9 and a second cavity 10, the connecting head 5, the second cavity 10 and the airflow channel 8 are sequentially communicated along the conveying direction of the gas source, the two ends of the bypass channel 11 are respectively communicated with the top side of the first cavity 9 and the airflow channel 8, the two ends of the second spring 4 are respectively abutted on the valve core 2 and the connecting head 5, the valve core 2 is movably arranged in the first cavity 9 and penetrates the bottom of the first cavity 9, and the top needle end of the valve core 2 is used to temporarily block the gas source from entering the second cavity 10; when the connecting head 5 is connected to the gas source, the gas pressure of the airflow channel 8 is too large, and a part of the gas source enters the first cavity 9 along the bypass channel 11 to drive the valve core 2 to move downward, and the top needle end of the valve core 2 temporarily blocks the gas source from entering the second cavity 10.
[0023] When the connecting head 5 is connected to the gas source and the gas pressure of the airflow channel 8 is too large, a part of the gas source enters the first cavity 9 along the bypass channel 11 and drives the valve core 2 to move downward when the breathing pressure control valve is used, when the gas pressure on the upper surface of the valve core 2 in the first cavity 9 is greater than the sum of the gas pressure on the lower surface and the reaction force of the second spring 4, the top needle end of the valve core 2 blocks the gas source from entering the second cavity 10; when the gas pressure on the upper surface of the valve core 2 in the first cavity 9 is less than the sum of the gas pressure on the lower surface and the reaction force of the second spring 4, the top needle end of the valve core 2 is pushed upward by the resetting force of the second spring 4, that is, the blocking of the gas source from entering the second cavity 10 is removed, so that the top needle end of the valve core 2 temporarily blocks the gas source from entering the second cavity 10 to relatively stabilize the gas pressure output by the airflow channel 8, which is beneficial to the gas source as a whole to maintain a relatively stable gas source amount released from the breathing pressure control valve, avoids the gas source from being consumed too fast, and is beneficial to fully utilizing the gas source.
[0024] Further, the top of the connector 5 is provided with a piston cavity 13, the breathing pressure control valve further comprises a first spring 3, and a piston assembly 6 which is movably arranged in the piston cavity 13 and communicates the connector 5 and the second cavity 10, two ends of the first spring 3 are respectively abutted against the top of the second cavity 10 and the top of the piston assembly 6, the second spring 4 is clamped between the valve core 2 and the piston assembly 6, the top pin end of the valve core 2 penetrates the bottom of the first cavity 9 and is used for temporarily blocking the piston assembly 6 to form an air flow adjusting group for adjusting the air source flow.
[0025] Further, the breathing pressure control valve further comprises a third spring 12 which is arranged in the first cavity 9, two ends of the third spring 12 are respectively abutted against the top of the valve core 2 and the bottom of the air valve cover 7. In actual use, when the traditional compressed air source container supplies air to the connector 5, the air pressure fluctuation of the air source is very large, which causes the air pressure fluctuation of the air flow channel 8; in order to optimize the above-mentioned air pressure fluctuation problem, the first spring 3, the second spring 4, the piston assembly 6, the third spring 12 and the valve core 2 are cooperated; when there is no air source supplied to the connector 5, the height of the first spring 3 is at the maximum value, the piston assembly 6 is located at the bottom of the piston cavity 13, the height of the third spring 12 is also at the maximum value, the valve head of the valve core 2 is close to the bottom of the first cavity 9, with the increase of the air pressure of the supplied air source, the piston assembly 6 is pushed to the top of the piston cavity 13 by the air pressure and gradually presses the first spring 3, in the process of the upward movement of the piston assembly 6, the second spring 4 and the valve core 2 are driven to move upward and compress the third spring 12, the reaction force generated by the third spring 12 offsets the air flow reaction force generated by the bottom of the valve core 2 due to the increase of the air pressure, thereby improving the influence of the increase of the inlet air pressure on the output end; when the inlet air pressure decreases, the piston assembly 6 is downwardly moved by the reset return force of the first spring 3, the valve core 2 also moves downwardly, the surface of the valve core 2 is gradually reduced by the return force of the third spring 12, which plays a reverse pressure stabilizing role and a relatively constant pressure role.
[0026] It should be noted that the first spring 3, the second spring 4 and the third spring 12 are all compression springs.
[0027] Further, the piston assembly 6 comprises a piston body 61 which is movably arranged in the piston cavity 13 and communicates the connector 5, and a first sealing ring 62 which is sleeved on the piston body 61, the outer side wall of the first sealing ring 62 movably abuts against the inner side wall of the piston cavity 13. The leakage of the air source from the gap between the piston cavity 13 and the piston body 61 is avoided.
[0028] Further, the piston assembly 6 further comprises a first perforated gasket 63 attached to the top of the piston body 61 and communicated with the piston body 61; the top needle end of the valve core 2 cooperates with the first perforated gasket 63 for adjusting the flow of the gas source. In use, when the gas pressure of the gas flow channel 8 is too large, under the joint action of the gas pressure of the gas source, the first spring 3, the second spring 4 and the third spring 12, the valve core 2 is pressed down and temporarily blocks the first perforated gasket 63, so that the top needle end of the valve core 2 blocks the gas source and the gas source cannot enter the second cavity 10 from the connector 5; after the gas pressure of the gas flow channel 8 is reduced, the valve core 2 unblocks the gas source to enter the second cavity 10, thereby relatively stabilizing the gas pressure of the output of the gas flow channel 8.
[0029] Further, the second cavity 10 is provided with a first annular groove 14, and a second sealing ring 15 is clamped between the first annular groove 14 and the connector 5; the top of the second cavity 10 is also provided with a second annular groove 16, and a second perforated gasket 17 is attached to the top of the second cavity 10; a third sealing ring 18 is clamped between the second perforated gasket 17 and the second annular groove 16, the inner side wall of the third sealing ring 18 movably abuts against the outer side wall of the top needle end of the valve core 2, and the first spring 3 is clamped between the second perforated gasket 17 and the piston assembly 6. This is conducive to avoiding leakage of the gas source from the gap between the first annular groove 14 and the connector 5 and the gap between the top of the second cavity 10 and the valve core 2. The second perforated gasket 17 and the second annular groove 16 are used to fix the third sealing ring 18.
[0030] Further, the outer side wall of the valve body 1 is provided with a balance hole 26 communicated with the bottom of the first cavity 9, which is used to balance the gap pressure between the valve head of the valve core 2 and the bottom of the first cavity 9 and the ambient pressure when the valve core 2 moves up and down; when the valve core 2 descends, the gas in the gap between the valve head of the valve core 2 and the bottom of the first cavity 9 is discharged along the balance hole 26; when the valve core 2 rises, the ambient air is sucked into the gap between the valve head of the valve core 2 and the bottom of the first cavity 9 along the balance hole 26; this also avoids the gap between the valve head of the valve core 2 and the bottom of the first cavity 9 from being infiltrated when the valve core 2 moves up and down, which affects the lifting of the valve core 2.
[0031] Further, the annular sealing gasket 19 is clamped between the valve body 1 and the air valve cover 7; the valve head of the valve core 2 is provided with a fourth sealing ring 20, and the outer side wall of the fourth sealing ring 20 movably abuts against the inner side wall of the first cavity 9. This is conducive to avoiding leakage of the gas source from the gap between the valve body 1 and the air valve cover 7 and the gap between the valve head of the valve core 2 and the first cavity 9.
[0032] Further, the outer side wall of the connecting head 5 is provided with external threads 21, and the inner side wall of the second cavity 10 is provided with internal threads 25 which are threadedly matched with the external threads 21; the connecting head 5 is threadedly connected to the bottom of the valve body 1 and protrudes from the bottom of the valve body 1. The upper half of the connecting head 5 is threadedly connected to the bottom of the valve body 1, and the lower half of the connecting head 5 can be threadedly matched with a thread base of an existing adapter to be fixedly installed.
[0033] Further, the bottom of the connecting head 5 is provided with an embedded cavity 22, and the embedded cavity 22 is embedded with a gas source pressing head 23 which is provided with a pressing air inlet through hole 24 which is communicated with the connecting head 5. When the breathing pressure control valve is applied to a gas source container, the pressing air outlet valve nozzle of the gas source container is inserted into and presses the air inlet through hole 24, and the gas source of the gas source container is discharged from the pressing air outlet valve nozzle and enters the connecting head 5.
[0034] The above embodiment is a preferred implementation scheme of the present application, in addition to this, the present application can also be implemented in other ways, and any obvious replacement without departing from the concept of the present application is within the protection scope of the present application.
Claims
1. A respiratory pressure control valve characterized by: The valve body, the valve core, the second spring, the connecting head, and the air valve cover, the valve body is provided with an airflow channel and a bypass channel, the upper and lower ends of the valve body are respectively provided with a first cavity and a second cavity, the connecting head, the second cavity and the airflow channel are sequentially communicated along the conveying direction of the air source, the two ends of the bypass channel are respectively communicated with the top side of the first cavity and the airflow channel, the two ends of the second spring are respectively abutted against the valve core and the connecting head, the valve core is movably arranged in the first cavity and penetrates the bottom of the first cavity, and the top needle end of the valve core is used for temporarily blocking the air source into the second cavity.
2. A respiratory pressure control valve according to claim 1, wherein: The top of the connecting head is provided with a piston cavity, the breathing pressure control valve further comprises a first spring, and a piston assembly movably arranged in the piston cavity and communicated with the connecting head and the second cavity, the two ends of the first spring are respectively abutted against the top of the second cavity and the top of the piston assembly, the second spring is clamped between the valve core and the piston assembly, and the top needle end of the valve core penetrates the bottom of the first cavity and is used for temporarily blocking the piston assembly to form an airflow adjusting group for adjusting the air source flow.
3. A respiratory pressure control valve according to claim 2, wherein: The breathing pressure control valve further comprises a third spring arranged in the first cavity, and the two ends of the third spring are respectively abutted against the top of the valve core and the bottom of the air valve cover.
4. A respiratory pressure control valve according to claim 2, wherein: The piston assembly comprises a piston body movably arranged in the piston cavity and communicated with the connecting head, and a first sealing ring sleeved on the piston body, and the outer side wall of the first sealing ring movably abuts against the inner side wall of the piston cavity.
5. A respiratory pressure control valve according to claim 4, wherein: The piston assembly further comprises a first perforated gasket attached to the top of the piston body and communicated with the piston body, and the top needle end of the valve core cooperates with the first perforated gasket to adjust the air source flow.
6. A respiratory pressure control valve according to claim 2, wherein: The second cavity is provided with a first annular groove, and the second sealing ring is clamped between the first annular groove and the connecting head; the top of the second cavity is further provided with a second annular groove, the second cavity is attached with a second perforated gasket, the third sealing ring is clamped between the second annular groove and the second perforated gasket, the inner side wall of the third sealing ring movably abuts against the outer side wall of the top needle end of the valve core, and the first spring is clamped between the second perforated gasket and the piston assembly.
7. A respiratory pressure control valve according to claim 6, wherein: The outer side wall of the valve body is provided with a balance hole communicated with the bottom of the first cavity, and the balance hole is used for balancing the gap pressure between the valve head of the valve core and the bottom of the first cavity and the external air pressure when the valve core moves up and down.
8. A respiratory pressure control valve according to claim 1, wherein: The valve body and the air valve cover are clamped with an annular sealing gasket, the valve head of the valve core is sleeved with a fourth sealing ring, and the outer side wall of the fourth sealing ring movably abuts against the inner side wall of the first cavity.
9. A respiratory pressure control valve according to claim 1, wherein: The outer side wall of the connecting head is provided with an external thread, the inner side wall of the second cavity is provided with an internal thread threadedly matched with the external thread, and the connecting head is threadedly connected to the bottom of the valve body and protrudes from the bottom of the valve body.
10. A respiratory pressure control valve according to claim 1, wherein: The bottom of the connecting head is provided with an embedded cavity, and the embedded cavity is embedded with an air source pressing head. The air source pressing head is provided with a pressing air inlet hole communicated with the connecting head.