An oxygen inhalation system with intermittent function

Abstract

An oxygen inhalation system with intermittent function, comprising an oxygen supply valve body, a first pressure reduction chamber, a second pressure reduction chamber, a first pressure reduction channel and a second pressure reduction channel are arranged in the oxygen supply valve body, a pressure plate is fixedly arranged above the first pressure reduction chamber, a first valve core group is arranged in the first pressure reduction chamber, a second valve core group is arranged in the second pressure reduction chamber, a gland is arranged at the top end of the oxygen supply valve body, an oxygen supply chamber is formed between the gland and the pressure plate, a gas outlet channel is arranged on the outer wall of the oxygen supply valve body and communicates with the oxygen supply chamber, a flow limiting piece for adjusting the gas outlet pressure of the gas outlet channel is arranged in the oxygen supply chamber, and the intermittent control system comprises a control circuit board, an electromagnetic valve, a battery and an oxygen inhalation tube, and a micro-pressure sensor is electrically connected to the control circuit board, the oxygen gas output by the gas cylinder can be multi-stage reduced, the oxygen supply is more stable, and the intermittent oxygen supply can be realized when inhaling oxygen, so that the waste amount of oxygen and the oxygen inhalation cost are reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of valves, in particular to an oxygen inhalation system with intermittent function. BACKGROUND

[0002] The oxygen supply valve is installed on the gas cylinder for reducing the pressure of the oxygen in the gas cylinder. The oxygen supply valve on the market generally adopts a one-stage pressure reduction method for oxygen supply pressure reduction. Such an oxygen supply valve has large oxygen supply pressure fluctuation and unstable oxygen supply pressure in actual use, mainly manifested in that when the pressure of the gas cylinder is large, the oxygen outlet pressure is large, and when the pressure in the gas cylinder decreases with use, the oxygen outlet pressure of the oxygen supply valve decreases, which has poor use effect. Secondly, the existing oxygen supply valve has large resistance during opening or closing due to the pressure in the gas cylinder being much greater than the atmospheric pressure, thereby having certain use limitations. Thirdly, the existing oxygen supply valve generally directly inserts the oxygen inhalation pipe into the oxygen supply valve, and the oxygen is always in an output state without closing the oxygen supply valve, which causes a lot of oxygen waste (mainly manifested in that the user wastes a lot of oxygen when the gas is discharged). Therefore, how to solve the above technical problems is the research direction of those skilled in the art. SUMMARY

[0003] The present application aims to overcome the deficiencies of the prior art and provide an oxygen inhalation system with intermittent function to solve the problems raised in the technical background.

[0004] The purpose of the present application is achieved by the following technical solutions:

[0005] An oxygen inhalation system with intermittent function comprises an oxygen supply valve body, a first pressure reduction chamber, a second pressure reduction chamber, a first pressure reduction channel and a second pressure reduction channel are arranged inside the oxygen supply valve body, a pressure plate is fixedly arranged above the first pressure reduction chamber, a first valve core group is arranged in the first pressure reduction chamber, a second valve core group is arranged in the second pressure reduction chamber, a gland is arranged at the top end of the oxygen supply valve body, an oxygen supply chamber is formed between the gland and the pressure plate, an air inlet channel is arranged at the lower end of the oxygen supply valve body and communicates with the first pressure reduction chamber, the first pressure reduction chamber and the second pressure reduction chamber are communicated through the first pressure reduction channel, the second pressure reduction chamber and the oxygen supply chamber are communicated through the second pressure reduction channel, an air outlet channel is arranged on the outer wall of the oxygen supply valve body and communicates with the oxygen supply chamber, and a flow limiting piece for controlling the opening and closing of the oxygen supply valve is arranged in the oxygen supply chamber.

[0006] The intermittent control system comprises a control circuit board, an electromagnetic valve, a battery and an oxygen inhalation tube, the electromagnetic valve and the battery are electrically connected with the control circuit board respectively, a micro pressure sensor is further electrically connected with the control circuit board, one end of the electromagnetic valve is communicated with an air outlet channel, two ends of the oxygen inhalation tube are communicated with the micro pressure sensor and the other end of the electromagnetic valve respectively, and an oxygen inhalation head is arranged at the middle part of the oxygen inhalation tube.

[0007] In the above summary, further, the primary valve core group comprises a valve needle and a first spring, the valve needle comprises a ring-shaped part and a thimble part arranged on the lower surface of the ring-shaped part, the upper surface of the ring-shaped part is provided with a recessed part, the recessed part and the pressing plate form a gas containing cavity, the thimble part is oppositely arranged with the air inlet channel, the inside of the thimble part is provided with a valve needle channel communicated with the gas containing cavity, the first spring is sleeved in the first pressure reduction cavity and abuts against the lower surface of the ring-shaped part, the valve needle moves back and forth along the height direction of the first pressure reduction cavity under the action of the first spring, thereby controlling the opening and closing of the air inlet channel.

[0008] In the above summary, further, the secondary valve core group comprises an upper cover, a second spring, a secondary valve core rod, a secondary valve core and a secondary valve core seat, the upper cover is fixed on the outer wall of the oxygen supply valve body through an elastic diaphragm, the upper cover and the elastic diaphragm have a mounting cavity, the mounting cavity is provided with a spring sleeve at the upper end, the upper end of the second spring is sleeved in the spring sleeve, the lower end of the second spring abuts against the elastic diaphragm through a spring washer, the upper end of the secondary valve core rod passes through the elastic diaphragm and the spring washer vertically in sequence and is fixed on the spring washer through a locking nut, the secondary valve core seat is installed in the second pressure reduction cavity, the secondary valve core is installed at the lower end of the secondary valve core rod and forms a first air passing gap with the secondary valve core seat, the secondary valve core moves back and forth along the secondary valve core rod under the action of the second spring, thereby controlling the opening and closing of the first air passing gap.

[0009] In the above summary, further, the flow limiting piece comprises a flow limiting plate and a rotating shaft integrally formed on the flow limiting plate, the surface of the flow limiting plate is provided with a gas permeable hole, the gas permeable hole is provided with a flow limiting valve piece, the cover plate comprises a top plate and a boss integrally formed on the lower surface of the top plate, the center of the cover plate is provided with a through hole penetrating through the top plate and the boss, the lower surface of the boss is provided with an air passing hole, the sidewall of the boss is provided with an air outlet hole communicated with the air passing hole, the flow limiting piece is sleeved in the through hole through the rotating shaft and can rotate along the through hole, the air passing hole can be communicated with the gas permeable hole through the rotation of the flow limiting piece, the flow limiting plate and the upper surface of the pressing plate have a second air passing gap, the sidewall of the boss and the inner wall of the oxygen supply cavity have a third air passing gap, and the air outlet channel is communicated with the third air passing gap.

[0010] Further, the surface of the flow limiting plate is provided with a plurality of air permeable holes at equal intervals in the circumferential direction, and a flow limiting valve plate is arranged in each of the air permeable holes, and the air permeating amount of the flow limiting valve plate in each of the air permeable holes is different, and the air permeating hole is communicated with the air permeable holes one by one through the rotation of the flow limiting member.

[0011] Further, a pair of mounting holes are symmetrically arranged on the side wall of the boss, a corrugated steel ball is arranged in the mounting hole, a plurality of grooves matched with the steel ball of the corrugated steel ball are arranged at equal intervals in the circumferential direction of the rotating shaft, and the rotating positioning between the limiting member, the groove and the cover plate is realized.

[0012] Further, an identification plate is fixed on the upper surface of the top plate, a rotating handle fixed on the rotating shaft is arranged above the identification plate, an annular limiting groove is arranged on the lower surface of the rotating handle, a limiting protrusion is arranged on the upper surface of the top plate, and a compass is further nested on the upper surface of the rotating handle.

[0013] Further, an air outlet connected with the oxygen supply valve body is arranged on the air outlet channel, and an air charging channel communicated with the air inlet channel is further arranged in the oxygen supply valve body, and an air charging nozzle fixed on the oxygen supply valve body is arranged on the air charging channel.

[0014] Further, a pressure measuring channel communicated with the air inlet channel is further arranged in the oxygen supply valve body, a pressure gauge fixed on the oxygen supply valve body is arranged on the pressure measuring channel, and an explosion-proof valve fixed on the oxygen supply valve body is further connected with the pressure measuring channel.

[0015] Further, a perforation is arranged on the pressing plate, and the perforation is arranged opposite to the second pressure reducing channel, and the second pressure reducing channel is communicated with the oxygen supply chamber through the perforation.

[0016] Further, the gap type control system further comprises a control box, the control box comprises a box body and a box cover covering above the box body, a circuit board support for fixing a control circuit board, a solenoid valve support for fixing a solenoid valve and a battery support for fixing a battery are arranged in the box body respectively, an oxygen inlet, an oxygen outlet and a negative pressure port are further arranged on the outer wall of the box body, the oxygen inlet is communicated with the air inlet end of the solenoid valve through an air pipe, the air outlet end of the solenoid valve is communicated with the oxygen outlet through a pipeline, the negative pressure port is communicated with the micro pressure sensor through a pipeline, and the two ends of the oxygen inhalation pipe are connected with the oxygen outlet and the negative pressure port respectively.

[0017] Further, a switch and a USB charging port are further arranged on the outer wall of the box body, and the switch and the USB charging port are electrically connected with the control circuit board.

[0018] The beneficial effects of the present application are: the oxygen supply valve body is internally provided with a first pressure reduction chamber and a second pressure reduction chamber, a first valve core group and a second valve core group are respectively arranged in the first pressure reduction chamber and the second pressure reduction chamber, the gas outlet pressure is controlled in a multi-stage pressure reduction mode under the action of the first valve core group and the second valve core group, so that the pressure of the reduced oxygen will not fluctuate greatly with the size of the gas pressure in the gas cylinder, and the purpose of stable oxygen supply can be achieved, and secondly, the flow limiting piece for controlling the opening and closing of the oxygen supply valve is arranged in the oxygen supply chamber, since the pressure of the oxygen supply chamber is small, the resistance when the oxygen supply valve is opened or closed is small, and the use of the oxygen supply valve is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a perspective view of the present application;

[0020] Figure 2 It is a structure block diagram of the gap type control system of the present application;

[0021] Figure 3 It is a front view of the present application;

[0022] Figure 4 It is Figure 3 A-A sectional view of the present application;

[0023] Figure 5 It is a side view of the present application;

[0024] Figure 6 It is Figure 5 B-B sectional view of the present application;

[0025] Figure 7 It is a front view of the oxygen supply valve body of the present application;

[0026] Figure 8 It is Figure 7 C-C sectional view of the present application;

[0027] Figure 9 It is a side view of the oxygen supply valve body of the present application;

[0028] Figure 10 It is Figure 9 D-D sectional view of the present application;

[0029] Figure 11 It is a front view of the first valve core group of the present application;

[0030] Figure 12 It is Figure 11 E-E sectional view of the present application;

[0031] Figure 13 It is a front view of the first valve core group of the present application;

[0032] Figure 14 It is Figure 13F-F cross-sectional view of the application;

[0033] Figure 15 isometric view of the application;

[0034] Figure 16 isometric view of the application;

[0035] Figure 17 isometric view of the application control box structure.

[0036] In the figure, 1 - oxygen supply valve body; 1.1 - first pressure reduction chamber; 1.2 - second pressure reduction chamber; 1.3 - first pressure reduction channel; 1.4 - second pressure reduction channel; 1.5 - oxygen supply chamber; 1.6 - air inlet channel; 1.7 - air outlet channel; 1.8 - inflation channel; 1.9 - pressure measurement channel; 2 - pressure plate; 2.1 - perforation, 3 - primary valve core group; 3.1 - valve needle; 3.11 - annular part; 3.12 - thimble part; 3.13 - recessed part; 3.14 - air containing chamber; 3.15 - valve needle channel; 3.2 - first spring; 4 - secondary valve core group, 4.1 - upper cover; 4.2 - second spring; 4.3 - secondary valve core rod; 4.4 - secondary valve core; 4.5 - secondary valve core seat; 4.6 - elastic diaphragm; 4.7 - mounting cavity; 4.8 - spring sleeve; 4.9 - spring gasket; 4.10 - locking nut; 4.11 - first air passage gap; 5 - cover plate; 5.1 - top plate; 5.2 - boss; 5.3 - through hole; 5.4 - air passage hole; 5.5 - air outlet hole; 5.6 - mounting hole; 5.7 - limiting protrusion; 6 - flow limiting piece; 6.1 - flow limiting plate; 6.2 - rotating shaft; 6.3 - air permeable hole; 6.4 - flow limiting valve piece; 6.5 - groove, 7 - second air passage gap; 8 - third air passage gap; 9 - corrugated steel ball; 10 - identification plate; 11 - rotating handle; 11.1 - annular limiting groove 11.1; 12 - compass; 13 - air outlet nozzle, 14 - inflation nozzle; 15 - pressure gauge; 16 - explosion-proof valve; 17 - valve core pad; 18 - Teflon sealing pad, 19 - control circuit board; 20 - solenoid valve; 21 - battery; 22 - oxygen inhalation tube; 22.1 - oxygen inhalation head; 23 - control box; 23.1 - box body; 23.2 - box cover, 23.3 - circuit board support; 23.4 - solenoid valve support, 23.5 - battery support, 23.6 - oxygen inlet, 23.7 - oxygen outlet, 23.8 - negative pressure port, 23.9 - switch, 23.10 - USB charging port. DETAILED DESCRIPTION

[0037] Following make the specific concrete example explain the embodiment of the application, the person skilled in the art can be easily understood from the disclosure of the present application other advantages and efficacy.The present application can also be implemented or applied by another different specific implementation, the details in the specification can also be based on different views and applications, without departing from the spirit of the present application, various modifications or changes.The need to explain that, in the following examples and the features in the examples can be combined with each other without conflict.

[0038] Need to explain, the drawings provided in the following examples only in a schematic way illustrates the basic concept of the present application, and the drawings only show the relevant components in the present application is not drawn according to the actual implementation of the number of components, shape and size, the actual implementation of each component type, quantity and proportion can be a random change, and its component layout type can be more complex. Example 1:

[0039] An oxygen inhalation system with intermittent function, please refer to the attached Figure 1 -attached Figure 10 As shown, including oxygen supply valve body 1, the first pressure reducing chamber 1.1 is arranged in the oxygen supply valve body 1, the second pressure reducing chamber 1.2, the first pressure reducing channel 1.3 and the second pressure reducing channel 1.4, the first pressure reducing chamber 1.1 is fixedly provided with the pressing plate 2, the first pressure reducing chamber 1.1 is provided with a valve core group 3, the second pressure reducing chamber 1.2 is provided with a valve core group 4, the top end of the oxygen supply valve body 1 is provided with a gland 5, the oxygen supply chamber 1.5 is formed between the gland 5 and the pressing plate 2, the lower end of the oxygen supply valve body 1 is provided with the air inlet channel 1.6 communicated with the first pressure reducing chamber 1.1, the first pressure reducing chamber 1.1 and the second pressure reducing chamber 1.2 are communicated through the first pressure reducing channel 1.3, the second pressure reducing chamber 1.2 and the oxygen supply chamber 1.5 are communicated through the second pressure reducing channel 1.4, the outer wall of the oxygen supply valve body 1 is provided with the air outlet channel 1.7 communicated with the oxygen supply chamber 1.5, the intermittent control system comprises a control circuit board 19, an electromagnetic valve 20, a battery 21 and an oxygen inhalation tube 22, the electromagnetic valve 20 and the battery 21 are electrically connected with the control circuit board 19 respectively, the control circuit board 19 is further electrically connected with a micro pressure sensor 23, one end of the electromagnetic valve 20 is communicated with the air outlet channel 1.7, the two ends of the oxygen inhalation tube 22 are respectively communicated with the micro pressure sensor 23 and the other end of the electromagnetic valve 20, the middle part of the oxygen inhalation tube 22 is provided with an oxygen inhalation head 22.1.

[0040] In the use, high pressure oxygen enters the first decompression chamber 1.1 through the inlet channel 1.6, the first decompression chamber 1.1 is provided with the first valve core group 3 to decompress the high pressure oxygen, the decompressed oxygen enters the second decompression chamber 1.2 through the first decompression channel 1.3, the second decompression chamber 1.2 is provided with the second valve core group 4 to decompress the high pressure oxygen, the decompressed oxygen enters the oxygen supply chamber 1.5 through the second decompression channel 1.4, and finally is discharged through the outlet channel 1.7. When inhaling oxygen, the inlet end of the electromagnetic valve 20 is communicated with the outlet channel 1.7 through a trachea, the two ends of the oxygen inhalation tube 22 are connected to the outlet end of the electromagnetic valve 20 and the micro pressure sensor 23 respectively, and finally the oxygen inhalation head 22.1 is placed into the nasal cavity. When the user inhales, the oxygen inhalation tube on the side communicated with the micro pressure sensor 23 generates negative pressure, the micro pressure sensor 23 detects the negative pressure and controls the electromagnetic valve 20 to open through the control circuit board 19, and the oxygen inhalation process is completed. When the user exhales, the negative pressure disappears, the micro pressure sensor 23 controls the electromagnetic valve 20 to close through the control circuit board 19, and the oxygen cannot be output through the electromagnetic valve 20, so that the oxygen is not wasted when the user exhales, the use time of the gas cylinder is prolonged, and the oxygen inhalation cost of the user is reduced.

[0041] Please refer to the accompanying drawings Figure 11 and the accompanying drawings Figure 12As shown, the primary valve core group 3 comprises a valve needle 3.1 and a first spring 3.2, the valve needle 3.1 comprises a ring part 3.11 and a thimble part 3.12 arranged on the lower surface of the ring part 3.11, the upper surface of the ring part 3.11 is provided with a recessed part 3.13, the recessed part 3.13 and the pressing plate 2 form a gas containing chamber 3.14, the thimble part 3.12 is arranged opposite to the gas inlet channel 1.6, the thimble part 3.12 is internally provided with a valve needle channel 3.15 which is in communication with the gas containing chamber 3.14, the first spring 3.2 is sleeved in the first pressure reducing chamber 1.1 and abuts against the lower surface of the ring part 3.11, the valve needle 3.1 moves back and forth along the height direction of the first pressure reducing chamber 1.1 under the action of the first spring 3.2, thereby controlling the opening and closing of the gas inlet channel 1.6, specifically, the high-pressure oxygen in the oxygen cylinder enters the first pressure reducing chamber 1.1 through the gas inlet channel 1.6, then the high-pressure oxygen enters the gas containing chamber 3.14 formed by the recessed part 3.13 and the pressing plate 2 through the valve needle channel 3.15, when the pressure in the gas containing chamber 3.14 is greater than the pressure of the first spring 3.2, the pressure in the gas containing chamber 3.14 overcomes the pressure of the first spring 3.2 and pushes the valve needle 3.1 downward, the valve needle 3.1 blocks the gas inlet channel 1.6 downward, preferably, the bottom end of the valve needle 3.1 is nested with a valve core pad 17, which enhances the blocking effect of the valve needle 3.1 on the gas inlet channel 1.6, when the oxygen in the first pressure reducing chamber 1.1 is discharged through the first pressure reducing channel 1.3, the pressure in the first pressure reducing channel 1.3 decreases, the first spring 3.2 pushes the valve needle 3.1 upward again, the high-pressure oxygen in the oxygen cylinder flows into the first pressure reducing chamber 1.1 through the gas inlet channel 1.6 again, thereby achieving the effect of primary pressure reduction, the pressure of the oxygen after primary pressure reduction can be stabilized within a certain range, which is convenient for secondary pressure reduction.

[0042] Please refer to the accompanying drawings Figure 13 and the accompanying drawings Figure 14As shown, the second valve core group 4 includes an upper cover 4.1, a second spring 4.2, a second valve core rod 4.3, a second valve core 4.4, and a second valve core seat 4.5, the upper cover 4.1 is fixed on the outer wall of the oxygen supply valve body 1 by an elastic diaphragm 4.6, there is a mounting cavity 4.7 between the upper cover 4.1 and the elastic diaphragm 4.6, the upper end of the mounting cavity 4.7 is provided with a spring sleeve 4.8, the upper end of the second spring 4.2 is sleeved in the spring sleeve 4.8, the lower end of the second spring 4.2 abuts against the elastic diaphragm 4.6 through a spring washer 4.9, the upper end of the second valve core rod 4.3 passes through the elastic diaphragm 4.6 and the spring washer 4.9 in sequence and is fixed on the spring washer 4.9 by a locking nut 4.10, the second valve core seat 4.5 is installed in the second pressure reduction chamber 1.2, the second valve core 4.4 is installed at the lower end of the second valve core rod 4.3 and forms a first air passage gap 4.11 with the second valve core seat 4.5, the second valve core 4.4 moves back and forth along the second valve core rod 4.3 under the action of the second spring 4.2, thereby controlling the opening and closing of the first air passage gap 4.11, specifically, in the normal state, the second spring 4.2 is in a compressed state, the second spring 4.2 presses the elastic diaphragm 4.6 downward, the second valve core 4.4 moves downward under the push of the second valve core rod 4.3, at this time, the second valve core 4.4 does not contact the second valve core seat 4.5, the oxygen gas after the first pressure reduction enters the first air passage gap 4.11 through the first pressure reduction channel 1.3, since the second valve core 4.4 does not contact the second valve core seat 4.5, the oxygen gas can enter the cavity between the elastic diaphragm 4.6 and the second valve core seat 4.5 through the gap between the second valve core 4.4 and the second valve core seat 4.5, with the continuous entry of the oxygen gas, the pressure in the cavity between the elastic diaphragm 4.6 and the second valve core seat 4.5 will gradually increase, in the process of increasing, the elastic diaphragm 4.6 will be pressed upward, thereby driving the second valve core rod 4.3 to move upward, in the process of moving upward, the second valve core rod 4.3 drives the second valve core 4.4 to move upward and abut against the second valve core seat 4.5 (as shown in the attached Figure 14 As a preferred embodiment, a fluorine sealing gasket 18 is sleeved on the second valve core 4.4, which strengthens the sealing and closing effect between the second valve core 4.4 and the second valve core seat 4.5, after the oxygen gas in the cavity between the elastic diaphragm 4.6 and the second valve core seat 4.5 is discharged through the second pressure reduction channel 1.4, the pressure in the cavity decreases, the second spring 4.2 pushes the second valve core rod 4.3 downward again, and the second valve core 4.4 is separated from the second valve core seat 4.5, then the oxygen gas can enter the cavity between the elastic diaphragm 4.6 and the second valve core seat 4.5 through the first air passage gap 4.11, thereby achieving the purpose of the second pressure reduction, finally, the oxygen gas after the second pressure reduction enters the oxygen supply cavity 1.5 through the second pressure reduction channel 1.4, and is finally discharged through the air outlet channel 1.7.

[0043] Further explanation of the above embodiments is needed. Since the oxygen pressure in the oxygen cylinder is relatively high when it is first used, the first-stage valve core group 3 can first depressurize the oxygen in the cylinder, and then the second-stage valve core group 4 can depressurize it a second time. As the cylinder continues to be used, when the oxygen pressure in the cylinder decreases to below the depressurization pressure of the first-stage valve core group, the oxygen pressure in the cylinder is insufficient to push the valve needle 3.1, and the oxygen in the cylinder can directly enter the first depressurization channel 1.3 for depressurization by the second-stage valve core group. The advantage of this design is that the oxygen pressure after depressurization will always be maintained in a stable range, overcoming the disadvantage of the traditional depressurization valve that the oxygen pressure discharged at the beginning is relatively high and gradually decreases with use. Example 2:

[0044] In this implementation, the oxygen supply chamber 1.5 is equipped with a flow restrictor 6 for controlling the opening and closing of the oxygen supply valve. Please refer to the attached document for further details. Figure 4 Appendix Figure 5 , see attached Figure 15 and appendix Figure 16 As shown, the flow restrictor 6 includes a flow restrictor plate 6.1 and a rotating shaft 6.2 integrally formed on the flow restrictor plate 6.1. The surface of the flow restrictor plate 6.1 is provided with vent holes 6.3, and each vent hole 6.3 is provided with a flow restrictor valve plate 6.4. The cover plate 5 includes a top plate 5.1 and a boss 5.2 integrally formed on the lower surface of the top plate 5.1. A through hole 5.3 penetrating the top plate 5.1 and the boss 5.2 is provided at the center of the cover plate 5. The lower surface of the boss 5.2 is provided with an air passage hole 5.4, and the side wall of the boss 5.2 is provided with an air outlet hole 5.5 communicating with the air passage hole 5.4. The flow restrictor 6 is sleeved in the through hole 5.3 via the rotating shaft 6.2 and can rotate along the through hole 5.3. The air passage hole 5.4 can communicate with the vent hole 6.3 through the rotation of the flow restrictor 6. A second air passage gap 7 exists between the flow restrictor plate 6.1 and the upper surface of the pressure plate 2. (Continue to refer to the appendix...) Figure 3 and attached Figure 5 As shown, there is a third air passage 8 between the side wall of the boss 5.2 and the inner wall of the oxygen supply chamber 1.5, and the air outlet channel 1.7 is connected to the third air passage 8.

[0045] In this embodiment, the pressing plate 2 is also provided with a through hole 2.1, which is arranged opposite to the second pressure reduction channel 1.4 and communicates with the oxygen supply chamber 1.5 through the through hole 2.1. The oxygen gas passing through the second pressure reduction channel 1.4 enters the oxygen supply chamber 1.5, and then enters the air permeation hole 6.3 through the second air gap 7 between the flow limiting plate 6.1 and the pressing plate 2. The flow limiting valve piece 6.4 of the air permeation hole 6.3 further reduces the pressure of the oxygen gas entering the air permeation hole 6.3. When the air hole 5.4 on the lower surface of the boss 5.2 is aligned with the air permeation hole 6.3 by rotating the flow limiting plate 6.1, the air permeation hole 6.3 enters the air outlet hole 5.5 through the air hole 5.4, and the oxygen gas is discharged into the third air gap 8 between the side wall of the boss 5.2 and the inner wall of the oxygen supply chamber 1.5, and finally discharged through the air outlet nozzle 13 on the air outlet channel 1.7.

[0046] In this embodiment, by rotating the flow limiting piece 6 on the cover plate 5, the air permeation hole 6.3 on the flow limiting plate 6.1 of the flow limiting piece 6 is aligned with the air hole 5.4, and the oxygen gas can be discharged through the air outlet hole 5.5 to achieve the purpose of opening the oxygen supply valve. Correspondingly, when the air permeation hole 6.3 on the flow limiting plate 6.1 of the flow limiting piece 6 is misaligned with the air hole 5.4 by rotating the flow limiting piece 6, the oxygen gas in the air permeation hole 6.3 cannot be discharged through the air outlet hole 5.5, thereby achieving the purpose of closing the oxygen valve. Through the above scheme, the problem of large resistance in opening or closing the oxygen supply valve due to high oxygen pressure in the traditional oxygen supply valve is overcome. Embodiment 3:

[0047] In this embodiment, please continue to refer to the accompanying Figure 15 and the accompanying Figure 16 different from embodiment 2, the surface of the flow limiting plate 6.1 is provided with a plurality of air permeation holes 6.3 at equal intervals in the circumferential direction, and the plurality of air permeation holes 6.3 are each provided with a flow limiting valve piece 6.4. The air permeation amount of the flow limiting valve piece 6.4 in each air permeation hole 6.3 is different. The air hole 5.4 is in one-to-one correspondence with the plurality of air permeation holes 6.3 by rotating the flow limiting piece 6. Through the above scheme, when the flow limiting piece 6 is rotated, the air hole 5.4 on the lower surface of the boss 5.2 can be aligned with the plurality of air permeation holes 6.3 for air permeation, and because the air permeation amount of the flow limiting valve piece 6.4 in each air permeation hole 6.3 is different, the purpose of controlling different air outlet amounts can be achieved when the flow limiting piece 6 is rotated, so that the flow limiting piece 6 has a gear adjustment function.

[0048] In the above embodiments, as a more optimal scheme, a pair of mounting holes 5.6 are symmetrically arranged on the side wall of the boss 5.2, and please continue to refer to the accompanying Figure 5As shown, the mounting hole 5.6 is provided with corrugated steel ball 9, the circumference of the rotating shaft 6.2 is provided with multiple grooves 6.5 matched with the steel ball of the corrugated steel ball 9, the limiting piece 6 is positioned by the groove 6.5 and the corrugated steel ball 9 and the cover plate 5, more preferably, the circumference of the rotating shaft 6.2 is provided with six grooves 6.5, two symmetrical grooves 6.5 are a group, and the six grooves 6.5 include three groups, each group corresponds to a gear, thereby achieving the purpose of positioning each air outlet gear.

[0049] In the above embodiment, as a more preferred scheme, the upper surface of the top plate 5.1 is fixed with an identification plate 10, the upper surface of the identification plate 10 is provided with a rotating handle 11 fixed on the rotating shaft 6.2, the lower surface of the rotating handle 11 is provided with an annular limiting groove 11.1, the upper surface of the top plate 5.1 is provided with a limiting protrusion 5.7, and the upper surface of the rotating handle 11 is further nested with a compass 12. In this embodiment, the identification plate is respectively provided with four identification positions of "health", "exercise", "emergency" and "off", wherein "health", "exercise" and "emergency" correspond to three gears respectively, in use, the limiting piece 6 rotates with the rotating handle 11 and communicates with different air holes 6.3, thereby realizing the effect of different gears and different air outlet of the oxygen supply valve, and through the missing slot on the rotating handle 11, the current air outlet can be directly observed. The gear, when the limiting piece 6 is not communicated with multiple air holes 6.3, the oxygen valve is in the off state, the annular limiting groove 11.1 and the limiting protrusion 5.7 are matched with each other, so that the rotating handle 11 can only be switched between the four identification positions, so that the user can quickly rotate the oxygen supply valve to the desired air supply gear. Embodiment 4:

[0050] In the embodiment, the outlet channel 1.7 is connected with an outlet nozzle 13 fixed on the oxygen supply valve body 1, which facilitates the connection of the gas pipe with the oxygen supply valve. In addition, the oxygen supply valve body 1 is also provided with a charging channel 1.8 in communication with the inlet channel 1.6, and the charging channel 1.8 is connected with a charging nozzle 14 fixed on the oxygen supply valve body 1. In order to prevent the damage of the valve element in the oxygen supply valve caused by the external high-pressure oxygen, the conventional oxygen supply valve generally does not have the charging function. When the gas cylinder is charged, the conventional oxygen supply valve is first removed from the gas cylinder, and then a special charging accessory is connected to the gas cylinder for charging. In the invention, the charging channel 1.8 and the inlet channel 1.6 are in communication with each other. When charging, the high-pressure oxygen enters the charging channel 1.8 and the inlet channel 1.6 through the charging nozzle 14 in sequence. When the high-pressure oxygen enters the first pressure reduction chamber 1.1 upward through the inlet channel 1.6, the valve needle 3.1 will move downward under the pressure and close the inlet channel 1.6, so that the high-pressure oxygen cannot enter the second pressure reduction chamber 1.2 through the first pressure reduction chamber 1.1 to damage the secondary valve core set 4. The high-pressure oxygen can only be charged into the gas cylinder downward through the inlet channel 1.6. Therefore, the invention has stronger practicability compared with the conventional oxygen supply valve.

[0051] In the above embodiment, as a more optimal solution, the oxygen supply valve body 1 is also provided with a pressure measuring channel 1.9 in communication with the inlet channel 1.6, and the pressure measuring channel 1.9 is provided with a pressure gauge 15 fixed on the oxygen supply valve body 1. The pressure in the gas cylinder can be directly observed through the pressure gauge. The pressure measuring channel 1.9 is also connected with an explosion-proof valve 16 fixed on the oxygen supply valve body 1. When the valve core set in the oxygen supply valve fails and causes abnormal pressure in the oxygen supply valve, the explosion-proof valve 16 can be used for pressure relief and explosion prevention. Embodiment 5:

[0052] In the embodiment, please refer to the accompanying Figure 17As shown, the intermittent control system further comprises a control box 23, the control box 23 comprises a box body 23.1 and a box cover 23.2 covering the box body 23.1, the box body 23.1 is respectively provided with a circuit board support 23.3 for fixing the control circuit board 19, an electromagnetic valve support 23.4 for fixing the electromagnetic valve 20 and a battery support 23.5 for fixing the battery 21, the circuit board support 23.3, the electromagnetic valve support 23.4 and the battery support 23.5 are respectively used for mounting the control circuit board 19, the electromagnetic valve 20 and the battery 21, the outer wall of the box body 23.1 is further provided with an oxygen inlet 23.6, an oxygen outlet 23.7 and a negative pressure port 23.8, the oxygen inlet 23.6 is communicated with the gas inlet end of the electromagnetic valve 20 through a gas pipe, the gas outlet end of the electromagnetic valve 20 is communicated with the oxygen outlet 23.7 through a pipeline, the negative pressure port 233.8 is communicated with the micro pressure sensor 23 through a pipeline, the two ends of the oxygen inhalation pipe 22 are respectively connected to the oxygen outlet 23.7 and the negative pressure port 23.8, in the actual oxygen inhalation process, only the two ends of the oxygen inhalation pipe 22 are connected to the oxygen outlet 23.7 and the negative pressure port 23.8, the connection of the oxygen inhalation pipe 22 is convenient, secondly, the outer wall of the box body 23.1 is further provided with a switch 23.9 and a USB charging port 23.10, the switch 23.10 and the USB charging port 23.10 are electrically connected with the control circuit board 19, the intermittent control system can be turned on or turned off through the switch 23.9, and the battery 21 can be charged through the USB charging port 23.10, thereby enhancing the practicability of the intermittent control system.

[0053] The above-described embodiments only express the specific implementation of the present application, which is described in detail and specifically, but cannot be understood as the limitation of the patent scope of the present application. It should be noted that, for those skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are all within the protection scope of the present application.

Claims

1. An oxygen inhalation system having an intermittent function, characterized by comprising: The oxygen supply valve body and the gap control system, the first pressure reducing chamber, the second pressure reducing chamber, the first pressure reducing channel and the second pressure reducing channel are arranged inside the oxygen supply valve body, the pressure plate is fixed above the first pressure reducing chamber, the first pressure reducing chamber is provided with the first valve core group, the second pressure reducing chamber is provided with the second valve core group, the top end of the oxygen supply valve body is provided with the gland, the oxygen supply chamber is formed between the pressure plate and the gland, the bottom end of the oxygen supply valve body is provided with the air inlet channel communicated with the first pressure reducing chamber, the first pressure reducing channel is communicated between the first pressure reducing chamber and the second pressure reducing chamber, the second pressure reducing channel is communicated between the second pressure reducing chamber and the oxygen supply chamber, the air outlet channel communicated with the oxygen supply chamber is arranged on the outer wall of the oxygen supply valve body, the flow limiting piece for controlling the opening and closing of the oxygen supply valve is arranged in the oxygen supply chamber. The gap control system comprises a control circuit board, an electromagnetic valve, a battery and an oxygen inhalation tube, the electromagnetic valve and the battery are electrically connected with the control circuit board, the micro-pressure sensor is also electrically connected with the control circuit board, one end of the electromagnetic valve is communicated with the air outlet channel, the two ends of the oxygen inhalation tube are communicated with the micro-pressure sensor and the other end of the electromagnetic valve respectively, and the middle part of the oxygen inhalation tube is provided with the oxygen inhalation head.

2. The oxygen inhalation system with intermittent function according to claim 1, characterized in that, The first valve core group comprises a valve needle and a first spring, the valve needle comprises a ring-shaped part and a needle part arranged on the lower surface of the ring-shaped part, the upper surface of the ring-shaped part is provided with a recessed part, the recessed part and the pressure plate form the air containing chamber, the needle part is arranged opposite to the air inlet channel, the needle part is provided with the needle channel communicated with the air containing chamber, the first spring is sleeved in the first pressure reducing chamber and abuts against the lower surface of the ring-shaped part, the valve needle moves back and forth along the height direction of the first pressure reducing chamber under the action of the first spring, thereby controlling the opening and closing of the air inlet channel.

3. The oxygen inhalation system with intermittent function according to claim 2, characterized in that, The second valve core group comprises an upper cover, a second spring, a second valve core rod, a second valve core and a second valve core seat, the upper cover is fixed on the outer wall of the oxygen supply valve body through the elastic diaphragm, the upper cover and the elastic diaphragm have the mounting cavity, the spring sleeve is arranged on the upper end of the mounting cavity, the upper end of the second spring is sleeved in the spring sleeve, the lower end of the second spring abuts against the elastic diaphragm through the spring washer, the upper end of the second valve core rod passes through the elastic diaphragm and the spring washer vertically and is fixed on the spring washer through the locking nut, the second valve core seat is arranged in the second pressure reducing chamber, the second valve core is arranged on the lower end of the second valve core rod and forms the first air passing gap with the second valve core seat, the second valve core moves back and forth along the second valve core rod under the action of the second spring, thereby controlling the opening and closing of the first air passing gap.

4. The oxygen inhalation system with intermittent function according to claim 1, characterized in that, The flow limiting piece includes a flow limiting plate and a rotating shaft integrally formed on the flow limiting plate, the surface of the flow limiting plate is provided with air permeable holes, each of the air permeable holes is provided with a flow limiting valve piece, the cover plate includes a top plate and a boss integrally formed on the lower surface of the top plate, the center of the cover plate is provided with a through hole penetrating through the top plate and the boss, the lower surface of the boss is provided with an air passing hole, the sidewall of the boss is provided with an air outlet hole in communication with the air passing hole, the flow limiting piece is sleeved on the through hole through the rotating shaft and can rotate along the through hole, the air passing hole can be communicated with the air permeable hole through the rotation of the flow limiting piece, the second air passing gap is formed between the flow limiting plate and the upper surface of the pressing plate, the third air passing gap is formed between the sidewall of the boss and the inner wall of the oxygen supply chamber, and the air outlet channel is in communication with the third air passing gap.

5. The oxygen inhalation system with intermittent function according to claim 4, characterized in that, The surface of the flow limiting plate is provided with a plurality of air permeable holes at equal intervals in the circumferential direction, each of the air permeable holes is provided with a flow limiting valve piece, the air passing amount of the flow limiting valve piece in each air permeable hole is different, and the air passing hole is in one-to-one correspondence with the plurality of air permeable holes through the rotation of the flow limiting piece.

6. The oxygen inhalation system with intermittent function according to claim 5, characterized in that, A pair of mounting holes are symmetrically arranged on the sidewall of the boss, a corrugated steel ball is arranged in the mounting hole, a plurality of grooves matched with the steel ball of the corrugated steel ball are arranged at equal intervals in the circumferential direction of the rotating shaft, and the rotating positioning is realized between the cover plate and the corrugated steel ball through the grooves.

7. The oxygen inhalation system with intermittent function according to claim 6, characterized in that, The upper surface of the top plate is fixed with an identification plate, a rotating handle fixed on the rotating shaft is arranged above the identification plate, the lower surface of the rotating handle is provided with an annular limiting groove, the upper surface of the top plate is provided with a limiting protrusion, and the upper surface of the rotating handle is further nested with a compass.

8. The oxygen inhalation system with intermittent function according to claim 7, characterized in that, An air outlet nozzle fixed on the oxygen supply valve body is connected to the air outlet channel, and a gas charging channel in communication with the air inlet channel is further arranged in the oxygen supply valve body.

9. The oxygen inhalation system with intermittent function according to claim 8, characterized in that A gas charging nozzle fixed on the oxygen supply valve body is connected to the gas charging channel.

10. An oxygen inhalation system with intermittent function according to any one of claims 4-9, characterized in that, A pressure measuring channel in communication with the air inlet channel is further arranged in the oxygen supply valve body, a pressure gauge fixed on the oxygen supply valve body is arranged on the pressure measuring channel, and an explosion-proof valve fixed on the oxygen supply valve body is further connected to the pressure measuring channel.

11. The oxygen inhalation system with intermittent function according to claim 1, characterized in that, The pressing plate is provided with a through hole, the through hole is arranged opposite to the second pressure reducing channel in communication, and the second pressure reducing channel is in communication with the oxygen supply chamber through the through hole.

12. The oxygen inhalation system with intermittent function according to claim 11, characterized in that, The gap type control system further includes a control box, the control box includes a box body and a box cover covering the box body, the box body is respectively provided with a circuit board support for fixing a control circuit board, an electromagnetic valve support for fixing an electromagnetic valve and a battery support for fixing a battery, the outer wall of the box body is further provided with an oxygen inlet, an oxygen outlet and a negative pressure port, the oxygen inlet is in communication with the air inlet end of the electromagnetic valve through an air pipe, the air outlet end of the electromagnetic valve is in communication with the oxygen outlet through a pipeline, the negative pressure port is in communication with the micro pressure sensor through a pipeline, and the two ends of the oxygen inhalation pipe are respectively connected to the oxygen outlet and the negative pressure port. The outer wall of the box body is further provided with a switch and a USB charging port, and the switch and the USB charging port are electrically connected with the control circuit board.

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