Integrated oxygen outlet with high-sensitivity lung valve mechanism

By designing a rocker arm transmission structure with efficient lever and a gas diversion channel, the problems of insufficient transmission of the diaphragm and valve stem in traditional comprehensive oxygen sockets are solved, and the diaphragm is not saved enough and the diaphragm is not reset in time, achieving improved oxygen absorption experience and effective utilization of oxygen.

CN113483134BActive Publication Date: 2025-03-18CHENGDU KANGTUO XINGYE TECH CO LTD
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Patent Information

Application Number
CN202110818575.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2021-07-20
Publication Date
2025-03-18
Estimated Expiration
2041-07-20

AI Technical Summary

Technical Problem

The transmission between the diaphragm and the valve stem of the traditional comprehensive oxygen socket is not labor-saving enough. Users need a large suction force to open the valve seat. The intake resistance is large, and the diaphragm is not reset in time, resulting in waste of oxygen.

Method used

A rocker arm transmission structure with efficient lever function is designed. By setting a transmission contact point and a rocker arm connection block, the contact area and friction between the valve stem and the rocker arm is reduced, and a gap is left between the diaphragm and the rocker arm for easy bending; at the same time, by designing a gas guide groove and drainage plate, a certain amount of oxygen is always retained in the induction cavity, which promotes the reset of the diaphragm and the timely closing of the valve seat.

Benefits of technology

It achieves a significant reduction in inhalation resistance and comfortable oxygen absorption experience. The valve seat is closed in time to avoid oxygen waste, especially when the user inhale deeply, which can close the valve seat in time to reduce oxygen waste.

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Abstract

The present invention discloses a comprehensive oxygen socket with a high-sensitivity lung valve mechanism, comprising a seat body, a diaphragm, a rocker arm, a valve rod and a valve seat, wherein a sensing inner cavity, a constant pressure inner cavity, an air inlet, an air outlet and a strip-shaped valve rod mounting hole are arranged in the seat body, the air outlet is connected with the sensing inner cavity through a control airway, the diaphragm is arranged between the sensing inner cavity and the constant pressure inner cavity, the valve rod is arranged in the valve rod mounting hole, the valve seat is installed in the seat body, the first end of the valve rod contacts with a position on the rocker arm close to the first end and forms a transmission contact point, the distance between the second end of the rocker arm and the transmission contact point is at least three times the distance between the pin shaft and the transmission contact point, and a gap is arranged between the second end of the rocker arm and the diaphragm in a normal state. The present invention realizes the purpose of significantly reducing the inhalation resistance, making the inhalation easier, and providing a comfortable oxygen inhalation experience by arranging a rocker arm transmission structure with an efficient lever function.
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Description

Technical Field

[0001] The invention relates to a comprehensive oxygen socket, in particular to a comprehensive oxygen socket with a high-sensitivity lung-type valve mechanism. Background Art

[0002] The integrated oxygen socket is a local device of the oxygen breathing system, also known as an oxygen flow automatic control device. In actual applications, it is often fixed on other carriers close to the user. The user only needs to connect the air inlet of the oxygen breathing device (such as a breathing mask) with the air outlet of the device to start breathing oxygen. It is like a socket, so it is figuratively called an integrated oxygen socket. Its main function is to use the characteristics of the diaphragm to realize automatic control of the oxygen flow, automatically delivering oxygen when the user inhales, and automatically shutting off the oxygen supply when the user does not inhale to avoid oxygen waste.

[0003] The basic structure of the integrated oxygen socket includes a seat body and a lung-type valve mechanism arranged in the seat body. The seat body is provided with a sensing cavity, a constant pressure cavity, an air inlet and an air outlet. The diaphragm is arranged between the sensing cavity and the constant pressure cavity. The valve seat is arranged between the air inlet and the air outlet and is controlled to open and close by a valve rod. The valve rod is driven by the diaphragm, and the air outlet is connected to the sensing cavity through a control airway. When the user inhales oxygen, the air pressure in the sensing cavity decreases, the diaphragm bends and pushes the rocker arm to move, thereby driving the valve rod to move and open the valve seat (also called opening the valve). The oxygen in the air inlet reaches the air outlet to supply oxygen to the user. When the user does not inhale oxygen, the air pressure in the sensing cavity is restored, the diaphragm is reset, and the valve seat is closed (also called valve closing) to avoid oxygen waste.

[0004] The traditional integrated oxygen socket has the following problems: the transmission between the diaphragm and the valve rod is not labor-saving enough, and the diaphragm is in direct contact or very close to the rocker arm. When the user inhales, the diaphragm is blocked as soon as it starts to bend, so the user needs a larger suction force to open the valve seat, that is, the inhalation resistance is large, it is more difficult to inhale, and the oxygen inhalation experience is poor; in addition, since the oxygen coming out of the air inlet cannot enter the sensing cavity through the control airway along the outlet direction, otherwise after the valve seat is opened, the oxygen will easily enter the sensing cavity and cause the erroneous operation of closing the valve seat by mistake. Therefore, when the user inhales, the gas in the sensing cavity flows out. When the user does not inhale, it is not easy for the oxygen at the air outlet to quickly enter the sensing cavity through the control airway, which results in the diaphragm failing to reset in time and the valve failing to close in time. Especially when the user takes a deep breath, more gas in the sensing cavity is sucked out, and the valve seat is more difficult to close, resulting in serious oxygen waste. Summary of the invention

[0005] The purpose of the present invention is to provide an integrated oxygen socket with a high-sensitivity lung valve mechanism that can open and close the valve seat in time and provide a good oxygen inhalation experience in order to solve the above problems.

[0006] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0007] A comprehensive oxygen socket with a high-sensitivity lung-type valve mechanism, comprising a seat body, a diaphragm, a rocker arm, a valve rod and a valve seat, wherein the seat body is provided with a sensing inner cavity, a constant pressure inner cavity, an air inlet, an air outlet and a strip-shaped valve rod mounting hole, wherein the air outlet is communicated with the sensing inner cavity through a control airway arranged in the seat body, wherein the diaphragm is arranged between the sensing inner cavity and the constant pressure inner cavity, wherein the valve rod is arranged in the valve rod mounting hole and can slide axially, wherein the first end of the two ends of the valve rod is arranged in the sensing inner cavity and can be driven by the rocker arm arranged in the sensing inner cavity, wherein the second end of the two ends of the valve rod is used to control the opening and closing of the valve seat, wherein the valve seat is installed in the The seat body is located between the air inlet and the air outlet, a rocker seat is installed on the wall of the sensing inner cavity near the first end of the valve rod, the first end of the rocker arm is provided with a rocker connecting block, the rocker connecting block is installed on the rocker seat through a pin shaft and can rotate, the first end of the valve rod contacts with a position on the rocker arm near the first end and forms a transmission contact point, the transmission contact point is located between the pin shaft and the second end of the rocker arm, the distance between the second end of the rocker arm and the transmission contact point is at least three times the distance between the pin shaft and the transmission contact point, and a gap is provided between the second end of the rocker arm and the diaphragm in normal state.

[0008] In the above structure, the valve seat is a conventional component of the valve mechanism; the 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, which will bend to one side when subjected to external force, and will return to its original state after the external force is lost, thereby driving the rocker arm to move; the internal structure of the seat body can be designed accordingly according to functional requirements; the rocker arm and the valve rod are both conventional component names, but the present invention aims to improve them; the sensing inner cavity, the constant pressure inner cavity, the air inlet, the air outlet and the valve rod mounting hole are all conventional structures, and their shapes and sizes are determined according to actual needs.

[0009] Preferably, in order to reduce the contact area and contact friction between the valve rod and the rocker arm, the first end of the valve rod is conical and the top of the cone contacts the rocker arm.

[0010] Preferably, in order to ensure the length of the rocker arm and reduce the volume of the sensing inner cavity, a bending portion is provided between the second end and the first end of the rocker arm.

[0011] Preferably, in order to ensure that the sensing cavity has a certain amount of oxygen after the user inhales so as to achieve the purpose of quickly closing the valve seat after the user stops inhaling, a strip-shaped gas guide groove is provided on the outer wall of the valve rod between its first end and the air inlet, or the gas guide groove is provided on the hole wall of the valve rod mounting hole, and the two ends of the gas guide groove are respectively connected to the sensing cavity and the air inlet.

[0012] As a preferred method, in order to avoid the problem that too much oxygen in the sensing cavity makes it difficult to open the valve seat in time and too little oxygen makes it difficult to close the valve seat in time, the radial cross-sectional area of ​​the gas guide groove is 1-3mm 2 .

[0013] Preferably, in order to make the structure of the valve mechanism more compact, the two ends of the valve rod mounting hole are respectively connected to the sensing inner cavity and the air outlet, the valve seat is installed at one end of the valve rod mounting hole close to the air outlet, the air inlet is located on the hole wall of the valve rod mounting hole close to the air outlet, a section of the valve rod close to its second end and corresponding to the air inlet has an outer diameter reduced to form a valve rod small diameter section, the valve rod small diameter section passes through the central through hole of the valve seat and an air flow channel for oxygen to pass through is left between the valve rod and the hole wall of the central through hole of the valve seat, the second end of the valve rod forms a sealing gasket mounting part, a sealing gasket is installed on the side of the sealing gasket mounting part close to the valve seat, and the sealing gasket can seal the central through hole of the valve seat and close the valve seat when it is close to the valve seat.

[0014] Preferably, in order to facilitate the adjustment of the opening and closing force of the valve seat and further increase the amount of oxygen in the sensing inner cavity after the user takes a deep breath so as to achieve the purpose of quickly closing the valve seat after the user stops inhaling, the integrated oxygen socket with a high-sensitivity lung-type valve mechanism also includes a threaded sleeve, an adjusting screw and an adjusting spring. The threaded sleeve is installed in the seat body and connected to the valve seat. The threaded sleeve is provided with a threaded sleeve inner cavity. The sealing gasket mounting portion is located in the threaded sleeve inner cavity. One end of the threaded sleeve inner cavity is connected to the central through hole of the valve seat. The threaded sleeve An internal thread is provided on the cavity wall at the other end of the sleeve cavity and is connected to the adjusting screw, the adjusting spring is placed in the inner cavity of the threaded sleeve and its two ends are respectively connected to the adjusting screw and the sealing gasket mounting portion, an air outlet hole communicating with the air outlet is provided on the cavity wall of the threaded sleeve cavity, a port on the control airway connected to the air outlet is located between the air outlet and the air outlet hole, and a guide plate for guiding part of the oxygen to the control airway is installed on the outer wall of the threaded sleeve near the port on the control airway connected to the air outlet.

[0015] Preferably, in order to minimize the influence of the guide plate on the oxygen flow rate during normal oxygen inhalation of the user, the end of the guide plate away from the air outlet is rotatably mounted on the outer wall of the threaded sleeve by a hinge or a rotating shaft, and the end of the guide plate close to the air outlet is connected to the outer wall of the threaded sleeve by an adaptive spring.

[0016] Preferably, in order to better balance the relationship between the user's normal oxygen inhalation function and the function of quickly closing the valve seat after stopping inhalation, the angle between the line between the two connection points on the outer wall of the threaded sleeve that are respectively connected to the guide plate and the adaptive spring and the guide plate is 10°-30°.

[0017] The beneficial effects of the present invention are:

[0018] The present invention provides a rocker arm transmission structure with an efficient lever function, which only requires a small thrust to push the valve rod to move through the rocker arm. At the same time, a gap is left between the diaphragm and the rocker arm. When the diaphragm bends, it is not subject to resistance at the beginning. After reaching a certain speed, the rocker arm is pushed, which can push the rocker arm to open the valve seat more quickly, thereby achieving the purpose of significantly reducing the inhalation resistance, making inhalation easier, and providing a comfortable oxygen inhalation experience; by designing the gas guide groove, a certain amount of oxygen is always retained in the sensing cavity. After the user stops inhaling, the air pressure in the sensing cavity can be increased as soon as possible, so that the diaphragm is reset as soon as possible to achieve the purpose of timely closing the valve seat and avoiding the waste of oxygen; By arranging a drainage plate on the threaded sleeve, and realizing the automatic angle adjustment function of the drainage plate through rotation installation and adaptive spring, when the user breathes oxygen normally, the adaptive spring is compressed due to the fast oxygen flow rate, and the drainage plate is closer to the outer wall of the threaded sleeve, which basically does not affect the user's oxygen intake and oxygen absorption feeling. When the user stops breathing oxygen, the adaptive spring is extended due to the rapid decrease of oxygen flow rate, and the drainage plate is further away from the outer wall of the threaded sleeve, which can more quickly guide oxygen into the control airway, so that the diaphragm can be reset more quickly to achieve the purpose of closing the valve seat more timely and avoiding the waste of oxygen, which is particularly beneficial to solve the problem that the valve seat cannot be closed in time due to deep inhalation of the user. The integrated oxygen socket with high-sensitivity lung valve mechanism of the present invention is particularly suitable for airborne oxygen production systems in the aviation field. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a partial front view cross-sectional structural schematic diagram of the integrated oxygen socket with a high-sensitivity lung valve mechanism according to the present invention. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings:

[0021] like Figure 1As shown, the integrated oxygen socket with a high-sensitivity lung-type valve mechanism of the present invention comprises a seat body 2, a diaphragm 16, a rocker arm 21, a valve rod 19 and a valve seat 12, wherein the seat body 2 is provided with a sensing inner cavity 18, a constant pressure inner cavity 17, an air inlet 13, an air outlet 1 and a strip-shaped valve rod mounting hole 14, the air outlet 1 is communicated with the sensing inner cavity 18 through a control airway 7 provided in the seat body 2, the diaphragm 16 is provided between the sensing inner cavity 18 and the constant pressure inner cavity 17, the valve rod 19 is disposed in the valve rod mounting hole 14 and can slide axially, the first end of the two ends of the valve rod 19 is disposed in the sensing inner cavity 18 and can be driven by the rocker arm 21 provided in the sensing inner cavity 18, the second end of the two ends of the valve rod 19 is used to control the opening and closing of the valve seat 12, the valve seat 12 is installed in the seat body 2 and Located between the air inlet 13 and the air outlet 1, a rocker seat 23 is installed on the wall of the sensing inner cavity 18 near the first end of the valve rod 19, and a rocker connecting block 24 is provided at the first end of the two ends of the rocker 21. The rocker connecting block 24 is installed on the rocker seat 23 through a pin 25 and can rotate. The first end of the valve rod 19 contacts the position near the first end of the rocker 21 and forms a transmission contact point (not marked in the figure), which is located between the pin 25 and the second end of the two ends of the rocker 21. The distance between the second end of the rocker 21 and the transmission contact point is at least three times the distance between the pin 25 and the transmission contact point, and is preferably 8-10 times. A gap of 5-10 mm is provided between the second end of the rocker 21 and the diaphragm 16 in normal state. The above-mentioned diaphragm 16, rocker 21, valve rod 19 and valve seat 12 and related structures together constitute a valve mechanism.

[0022] like Figure 1 As shown, the present invention also discloses the following multiple more optimized specific structures. According to actual needs, the above structure can be superimposed and combined with one or more of the following structures to form a more optimized technical solution.

[0023] In order to reduce the contact area and contact friction between the valve rod 19 and the rocker arm 21 , the first end of the valve rod 19 is conical and the top of the cone contacts the rocker arm 21 .

[0024] In order to ensure the length of the rocker arm 21 and reduce the volume of the sensing inner cavity 18 , a bending portion 22 is provided between the second end and the first end of the rocker arm 21 .

[0025] In order to ensure that the sensing cavity 18 has a certain amount of oxygen after the user inhales so as to achieve the purpose of quickly closing the valve seat 12 after the user stops inhaling, a strip-shaped gas guide groove 20 is provided on the outer wall of the valve rod 19 between its first end and the air inlet 13, or the gas guide groove 20 can also be provided on the hole wall of the valve rod mounting hole 14, and the two ends of the gas guide groove 20 are respectively connected to the sensing cavity 18 and the air inlet 13.

[0026] In order to avoid the problem that too much oxygen in the sensing cavity 18 makes it difficult to open the valve seat 12 in time and too little oxygen makes it difficult to close the valve seat 12 in time, the radial cross-sectional area of ​​the gas guide groove 20 is 1-3mm 2 .

[0027] In order to make the structure of the valve mechanism more compact, the two ends of the valve rod mounting hole 14 are respectively connected with the sensing inner cavity 18 and the air outlet 1, the valve seat 12 is installed at one end of the valve rod mounting hole 14 close to the air outlet 1, and the air inlet 13 is located on the hole wall of the valve rod mounting hole 14 close to the air outlet 1. A section of the valve rod 19 close to its second end and corresponding to the air inlet 13 has a reduced outer diameter to form a valve rod small diameter section 15. The valve rod small diameter section 15 passes through the central through hole of the valve seat 12 and an air flow channel for oxygen to pass through is left between the valve rod small diameter section 15 and the hole wall of the central through hole of the valve seat 12. The second end of the valve rod 19 forms a sealing gasket mounting part 10, and a sealing gasket 11 is installed on the side of the sealing gasket mounting part 10 close to the valve seat 12. When the sealing gasket 11 is close to the valve seat 12, the central through hole of the valve seat 12 can be sealed and closed by the sealing gasket 11.

[0028] In order to facilitate the adjustment of the opening and closing force of the valve seat 12 and further increase the amount of oxygen in the sensing cavity 18 after the user takes a deep breath so as to achieve the purpose of quickly closing the valve seat 12 after the user stops inhaling, the integrated oxygen socket with a high-sensitivity lung valve mechanism also includes a threaded sleeve 4, an adjusting screw 3 and an adjusting spring 8. The threaded sleeve 4 is installed in the seat body 2 and connected to the valve seat 12. The threaded sleeve 4 is provided with a threaded sleeve inner cavity. The sealing gasket mounting portion 10 is located in the threaded sleeve inner cavity. One end of the threaded sleeve inner cavity is connected to the central through hole of the valve seat 12. The other end of the inner cavity of the threaded sleeve is provided with an internal thread and connected to the adjusting screw 3, the adjusting spring 8 is placed in the inner cavity of the threaded sleeve and its two ends are respectively connected to the adjusting screw 3 and the sealing gasket mounting portion 10, the inner cavity wall of the threaded sleeve is provided with an outlet hole 9 communicated with the air outlet 1, the port connected to the air outlet 1 on the control airway 7 is located between the air outlet 1 and the outlet hole 9, and a guide plate 6 for guiding part of the oxygen to the control airway 7 is installed on the outer wall of the threaded sleeve 4 near the port connected to the air outlet 1 on the control airway 7.

[0029] In order to minimize the influence of the guide plate 6 on the oxygen flow rate during the user's normal oxygen inhalation, the end of the guide plate 6 away from the air outlet 1 is rotatably mounted on the outer wall of the threaded sleeve 4 through a hinge or a rotating shaft, and the end of the guide plate 6 close to the air outlet 1 is connected to the outer wall of the threaded sleeve 4 through an adaptive spring 5. The adaptive spring 5 is a spring with relatively low elasticity, which is both a compression spring and a tension spring for the guide plate 6, and its purpose is to control the rotation angle of the guide plate 6 within a certain range and form an adaptive change effect according to the pressure generated by the oxygen flow.

[0030] In order to better balance the relationship between the user's normal oxygen inhalation function and the function of quickly closing the valve seat 12 after stopping inhalation, the angle between the line between the two connection points on the outer wall of the threaded sleeve 4 that are respectively connected to the guide plate 6 and the adaptive spring 5 and the guide plate 6 is 10°-30°.

[0031] like Figure 1 As shown, the integrated oxygen socket with a high-sensitivity lung valve mechanism of the present invention has the following three states:

[0032] The first state: the user (such as the pilot) is not wearing a mask and the integrated oxygen socket is not working. Figure 1 , oxygen enters the valve rod mounting hole 14 from the air inlet 13. Since the valve rod 19 and the hole wall of the valve rod mounting hole 14 are precisely matched with each other, there is a trace amount of gas leakage between them. At this time, a small part of the oxygen flows into the sensing cavity 18 through the gap between the valve rod 19 and the valve rod mounting hole 14 and the gas guide groove 20. The valve rod 19 moves toward the direction close to the rocker arm seat 23 under the joint action of the adjusting spring 8 and the oxygen pressure, driving the sealing gasket 11 to completely seal the central through hole of the valve seat 12, and oxygen cannot reach the air outlet 1 through the valve seat 12; the first end of the valve rod 19 gives a thrust to the rocker arm 21 through the transmission contact point. Under the action of this thrust, the rocker arm 21 maintains balance under the limiting action of the rocker arm seat 23. At this time, there is still a certain distance between the second end of the rocker arm 21 and the diaphragm 16, which is in a non-contact state.

[0033] The second state: when the user (such as a pilot) puts on the breathing mask and starts to inhale, the air pressure of the air outlet 1 decreases, and the oxygen in the sensing cavity 18 enters the breathing mask through the control airway 7 and the air outlet 1. The air pressure in the sensing cavity 18 decreases instantly and is lower than the air pressure in the constant pressure cavity 17. The diaphragm 16 bends downward under the action of this pressure difference and pushes the rocker arm 21. The rocker arm 21 starts to rotate with the pin 25 as the center of the circle. The rocker arm 21 pushes the valve rod 19 through the transmission contact point to overcome the elastic force of the adjustment spring 8 and the oxygen pressure to move toward the valve seat 12. The sealing gasket 11 and the valve seat 12 are separated to form a gap. The valve seat 12 is in the open state. The oxygen in the air inlet 13 reaches the air outlet 1 through the air outlet hole 9 and is inhaled by the user, achieving the purpose of normal oxygen inhalation. At this time, the valve seat 12 is opened, and a small amount of oxygen enters the sensing cavity 18 under the action of the guide plate 6 on the threaded sleeve 4, so as to prepare for the timely closing of the valve seat 12 after the user stops inhaling oxygen.

[0034] The third state: when the user (such as a pilot) stops inhaling or exhaling, the guide plate 6 will introduce more oxygen into the sensing cavity 18, and the gas in the breathing mask will also be diverted into the sensing cavity 18, plus the oxygen flowing into the sensing cavity 18 from the gap between the valve rod 19 and the valve rod mounting hole 14 and the gas guide groove 20. Under the joint action of these gases, the air pressure in the sensing cavity 18 rises rapidly and is higher than the air pressure in the constant pressure cavity 17, and the diaphragm 16 quickly bends in the opposite direction until the air pressure in the sensing cavity 18 is equal to the air pressure in the constant pressure cavity 17, and the reset is completed. Under the action of the elastic force of the adjustment spring 8 and the oxygen pressure, the valve rod 19 moves in the direction close to the rocker seat 23, driving the rocker 21 to rotate in the opposite direction to reset and maintain balance, and the sealing pad 11 seals the central through hole of the valve seat 12 again to realize the timely closure of the valve seat 12, and timely shut off the oxygen to avoid oxygen waste. When the user inhales again, the second state process is repeated.

[0035] 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. An integrated oxygen socket with a high-sensitivity lung valve mechanism, comprising a seat body, a diaphragm, a rocker arm, a valve rod and a valve seat, wherein the seat body is provided with a sensing inner cavity, a constant pressure inner cavity, an air inlet, an air outlet and a strip-shaped valve rod mounting hole, wherein the air outlet is communicated with the sensing inner cavity through a control airway provided in the seat body, wherein the diaphragm is provided between the sensing inner cavity and the constant pressure inner cavity, wherein the valve rod is placed in the valve rod mounting hole and can slide axially, wherein the first end of the two ends of the valve rod is placed in the sensing inner cavity and can be driven by the rocker arm provided in the sensing inner cavity, wherein the second end of the two ends of the valve rod is used to control the opening and closing of the valve seat, wherein the valve seat is installed in the seat body and is located between the air inlet and the air outlet, wherein the valve seat is installed in the seat body and is located between the air inlet and the air outlet, wherein the valve seat is characterized in that: A rocker arm seat is installed on the cavity wall of the sensing cavity near the first end of the valve rod, and a rocker arm connecting block is provided at the first end of the two ends of the rocker arm. The rocker arm connecting block is installed on the rocker arm seat through a pin shaft and can rotate. The first end of the valve rod contacts the position of the rocker arm near the first end and forms a transmission contact point. The transmission contact point is located between the pin shaft and the second end of the two ends of the rocker arm, and the distance between the second end of the rocker arm and the transmission contact point is at least three times the distance between the pin shaft and the transmission contact point. , a gap is provided between the second end of the rocker arm and the diaphragm in a normal state; a strip-shaped gas guide groove is provided on the outer wall of the valve rod between the first end thereof and the air inlet, or the gas guide groove is provided on the hole wall of the valve rod mounting hole, and the two ends of the gas guide groove are respectively connected with the sensing inner cavity and the air inlet; the two ends of the valve rod mounting hole are respectively connected with the sensing inner cavity and the air outlet, the valve seat is installed at one end of the valve rod mounting hole close to the air outlet, and the air inlet is located at the valve The valve rod is provided with a sealing gasket installed on one side of the sealing gasket installation part close to the valve seat, and a section of the valve rod close to the second end thereof and corresponding to the air inlet has an outer diameter reduced to form a valve rod small diameter section, the valve rod small diameter section passes through the central through hole of the valve seat, and an air flow channel for oxygen to pass through is left between the valve rod small diameter section and the central through hole wall of the valve seat, the second end of the valve rod forms a sealing gasket installation part, and a sealing gasket is installed on the sealing gasket installation part close to the valve seat, and the sealing gasket can seal the central through hole of the valve seat and close the valve seat when the sealing gasket is close to the valve seat. Gate seat; the integrated oxygen socket with a high-sensitivity lung-type valve mechanism also includes a threaded sleeve, which is installed in the seat body and connected to the valve seat, and a guide plate for guiding part of the oxygen to the control airway is installed on the outer wall of the threaded sleeve near the port on the control airway connected to the air outlet, and one end of the guide plate away from the air outlet is rotatably installed on the outer wall of the threaded sleeve through a hinge or a rotating shaft, and one end of the guide plate close to the air outlet is connected to the outer wall of the threaded sleeve through an adaptive spring.

2. The integrated oxygen socket with a high-sensitivity lung valve mechanism according to claim 1, characterized in that: The first end of the valve rod is conical and the top of the cone contacts the rocker arm.

3. The integrated oxygen socket with a high-sensitivity lung valve mechanism according to claim 1, characterized in that: A bending portion is provided between the second end and the first end of the rocker arm.

4. The integrated oxygen socket with a high-sensitivity lung valve mechanism according to claim 1, characterized in that: The radial cross-sectional area of ​​the gas guide groove is 1-3 mm 2 .

5. The integrated oxygen socket with a high-sensitivity lung valve mechanism according to any one of claims 1 to 3, characterized in that: The integrated oxygen socket with a high-sensitivity lung-type valve mechanism also includes an adjusting screw and an adjusting spring. The threaded sleeve is provided with a threaded sleeve inner cavity, and the sealing gasket mounting portion is located in the threaded sleeve inner cavity. One end of the threaded sleeve inner cavity is communicated with the central through hole of the valve seat, and the other end of the threaded sleeve inner cavity is provided with an internal thread on the cavity wall and connected to the adjusting screw. The adjusting spring is placed in the threaded sleeve inner cavity and its two ends are respectively connected to the adjusting screw and the sealing gasket mounting portion. An air outlet hole communicating with the air outlet is provided on the cavity wall of the threaded sleeve inner cavity, and a port on the control airway connected to the air outlet is located between the air outlet and the air outlet hole.

6. The integrated oxygen socket with a high-sensitivity lung valve mechanism according to claim 5, characterized in that: The angle between the guide plate and the line connecting two connection points on the outer wall of the threaded sleeve respectively connected to the guide plate and the adaptive spring is 10°-30°.

Citation Information

Patent Citations

  • Integrated oxygen socket with high-sensitivity lung type valve mechanism

    CN215110750U