Direct current oxygen cylinder valve
By designing a direct-flow oxygen supply valve for oxygen cylinders, and using orifices of different diameters and a rotating regulating plate, the problem of inaccurate flow control in traditional oxygen supply valves has been solved, achieving precise regulation and stable output of oxygen flow, and improving the safety and convenience of oxygen supply.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 四川新一程科技有限公司
- Filing Date
- 2025-09-26
- Publication Date
- 2026-07-21
AI Technical Summary
Traditional oxygen supply valves mostly use float flow meters to regulate flow, relying on manual observation and experience. This can easily lead to inaccurate flow control due to perspective deviation or operational errors.
A direct-flow oxygen supply valve for oxygen cylinders was designed, comprising a valve body, a constant pressure chamber, an adjustment chamber, and a pressure reducing mechanism. By setting orifices of different diameters and rotating the adjustment plate, the oxygen flow rate can be automatically adjusted. Combined with a sealing ring and a one-way valve, stable output is ensured.
It achieves precise regulation and stable output of oxygen flow, avoiding errors caused by manual operation and improving the safety and convenience of oxygen supply.
Smart Images
Figure CN224534050U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of oxygen supply valve technology, specifically to a direct-flow oxygen supply valve for oxygen cylinders. Background Technology
[0002] With the increasing demand for oxygen supply equipment in scenarios such as medical emergency, high-altitude operations, diving activities, and home oxygen therapy, oxygen cylinders are widely used as portable oxygen sources. The oxygen supply valve, as the core control component of an oxygen cylinder, directly affects the safety, stability, and convenience of oxygen supply.
[0003] Traditional oxygen supply valves mostly lack flow regulation functions or use float flow meters to regulate flow. When adjusting, they rely on manual observation and experience, which can easily lead to inaccurate flow control due to perspective deviation or operational errors. Utility Model Content
[0004] The purpose of this utility model is to provide a direct-flow oxygen supply valve for oxygen cylinders, which solves the problem that traditional oxygen supply valves mostly use float flow meters to regulate flow, rely on manual observation and experience, and are prone to inaccurate flow control due to perspective deviation or operational errors.
[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A direct-flow oxygen supply valve for an oxygen cylinder includes a valve body with a vertically arranged air inlet channel. The lower end of the air inlet channel is connected to the lower end of the valve body to form a connection port. The upper end of the air inlet channel is connected to a constant pressure chamber. A pressure reducing mechanism is provided at the connection between the constant pressure chamber and the air inlet channel. An adjustment chamber is provided above the constant pressure chamber on the valve body. The top of the constant pressure chamber is connected to the bottom of the adjustment chamber through several first air holes of different diameters. An adjustment plate is rotatably arranged at the bottom of the adjustment chamber along the vertical axis. A second air hole is provided on the adjustment plate, which is connected to the upper and lower sides. The second air hole can be rotated to be aligned and connected with the first air hole. An oxygen supply nozzle is provided on the side of the valve body. The oxygen supply nozzle is connected to the adjustment chamber above the adjustment plate through an oxygen supply hole.
[0006] A further technical solution is that the pressure reducing mechanism includes a valve stem and a first spring. An intake ring is provided in the middle of the intake channel. The diameter of the upper part of the valve stem matches the inner diameter of the intake channel, and the diameter of the lower part of the valve stem is smaller than the diameter of the intake channel but larger than the inner diameter of the intake ring. A third air hole is horizontally provided at the lower part of the valve stem, penetrating both sides. A fourth air hole is provided at the upper end of the valve stem, communicating with the third air hole. An elastic ring groove is provided around the bottom of the constant pressure chamber, and the first spring is installed in the elastic ring groove. A constant pressure plate is provided on the outer wall of the upper end of the valve stem. The outer wall of the constant pressure plate slides against the cavity wall of the constant pressure chamber. The lower end of the first spring is connected to the bottom of the elastic ring groove, and the upper end is connected to the lower side of the constant pressure plate.
[0007] A further technical solution is to provide a first sealing ring on the outer wall surrounding the upper part of the valve stem, with the outer wall of the first sealing ring slidingly and sealingly fitting against the inner wall of the air intake channel; and to provide a second sealing ring on the outer wall surrounding the constant pressure plate, with the outer wall of the second sealing ring slidingly and sealingly fitting against the cavity wall of the constant pressure chamber.
[0008] A further technical solution is that the upper side of the valve body is provided with a rotating hole that communicates with the regulating chamber, and a rotating rod is rotatably installed in the rotating hole. The lower end of the rotating rod is coaxially connected to the regulating plate, and the upper end is connected to a knob cover on the upper side of the valve body.
[0009] A further technical solution is that a sealing ring groove is provided around the first air hole at the bottom of the regulating cavity, and a third sealing ring is installed in the sealing ring groove. The upper side of the third sealing ring slides and seals against the lower side of the regulating plate. A fourth sealing ring is provided around the outer wall of the rotating rod, and the outer side of the fourth sealing ring slides and seals against the wall of the rotating hole.
[0010] A further technical solution is that the upper side of the valve body is provided with several positioning slots around the rotating hole, and the lower side of the knob cover is recessed with an elastic hole. A second spring is provided in the elastic hole, the upper end of the second spring is connected to the bottom of the elastic hole, and the lower end is connected to a positioning bead. When the positioning bead rotates to the positioning slot as the knob cover rotates, a part of the lower end of the positioning bead is locked in the positioning slot, and the second air hole is aligned and connected with the first air hole.
[0011] A further technical solution is to provide an inflation channel on the side of the valve body that is connected to the air intake channel, and to provide a one-way valve that allows unidirectional flow from the outside to the inside within the inflation channel.
[0012] A further technical solution is to have an exhaust passage connected to the intake passage on the side of the valve body, and a sealing plug for blocking the exhaust passage on the side of the valve body.
[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. By setting a pressure reducing mechanism, the oxygen in the oxygen cylinder can be reduced to a low-pressure state after entering the constant pressure chamber of the valve body, so that the valve body can supply low-pressure oxygen to the user through the oxygen supply nozzle, avoiding excessive airflow impact on the user; 2. By setting several first air holes with different diameters, different flow rates of oxygen can be provided to the oxygen supply nozzle when different first air holes and second air holes are aligned, thereby adapting to different oxygen supply needs. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of a DC oxygen supply valve for an oxygen cylinder according to the present invention.
[0015] Figure 2 This is a cross-sectional schematic diagram of a DC oxygen supply valve for an oxygen cylinder according to the present invention.
[0016] Figure 3 This is a schematic diagram of the internal structure of a DC oxygen supply valve for an oxygen cylinder according to this utility model. Figure 1 .
[0017] Figure 4 This is a schematic diagram of the internal structure of a DC oxygen supply valve for an oxygen cylinder according to this utility model. Figure 2 .
[0018] Icons: 1-Valve body, 2-Inlet channel, 3-Connection port, 4-Constant pressure chamber, 5-Adjustment chamber, 6-First air hole, 7-Adjustment plate, 8-Second air hole, 9-Oxygen supply nozzle, 10-Oxygen supply hole, 11-Valve stem, 12-First spring, 13-Inlet ring, 14-Third air hole, 15-Fourth air hole, 16-Elastic ring groove, 17-Constant pressure plate, 18-First sealing ring, 19-Second sealing ring, 20-Rotation hole, 21-Rotation rod, 22-Knob cover, 23-Sealing ring groove, 24-Third sealing ring, 25-Fourth sealing ring, 26-Positioning slot, 27-Elastic hole, 28-Second spring, 29-Positioning bead, 30-Inflation channel, 31-One-way valve, 32-Exhaust channel, 33-Sealing plug. Detailed Implementation
[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0020] Figures 1 to 4 The following is an embodiment of the present invention.
[0021] Example: A direct-flow oxygen supply valve for an oxygen cylinder includes a valve body 1. An air inlet channel 2 is vertically arranged inside the valve body 1. The lower end of the air inlet channel 2 connects to the lower end of the valve body 1 to form a connection port 3. A constant pressure chamber 4 connects to the upper end of the air inlet channel 2. A pressure reducing mechanism is provided at the connection between the constant pressure chamber 4 and the air inlet channel 2. An adjusting chamber 5 is provided above the constant pressure chamber 4 on the valve body 1. The top of the constant pressure chamber 4 is connected to the bottom of the adjusting chamber 5 through several first air holes 6 of different diameters. An adjusting plate 7 is rotatably arranged at the bottom of the adjusting chamber 5 along a vertical axis. A second air hole 8 is provided on the adjusting plate 7, penetrating both the upper and lower sides. The second air hole 8 can be rotated to align and connect with the first air holes 6. An oxygen supply nozzle 9 is provided on the side of the valve body 1. The oxygen supply nozzle 9 connects to the adjusting chamber 5 above the adjusting plate 7 through an oxygen supply hole 10. By setting a pressure-reducing mechanism, the oxygen in the oxygen cylinder can be reduced to a low-pressure state after entering the constant-pressure chamber 4 in the valve body 1. This allows the valve body 1 to supply low-pressure oxygen to the user through the oxygen supply nozzle 9, avoiding excessive airflow impact on the user. By setting several first air holes 6 with different orifice diameters, different flow rates of oxygen can be provided to the oxygen supply nozzle 9 when different first air holes 6 and second air holes 8 are aligned, thus adapting to different oxygen supply needs. The second air hole 8 can be aligned with different first air holes 6 by rotating the adjusting plate 7.
[0022] The pressure reducing mechanism includes a valve stem 11 and a first spring 12. An intake ring 13 is provided in the middle of the intake channel 2. The upper diameter of the valve stem 11 matches the inner diameter of the intake channel 2. The lower diameter of the valve stem 11 is smaller than the diameter of the intake channel 2 but larger than the inner diameter of the intake ring 13. A third air hole 14 is horizontally provided at the lower part of the valve stem 11, penetrating both sides. A fourth air hole 15 is provided at the upper end of the valve stem 11, communicating with the third air hole 14. An elastic ring groove 16 is provided around the bottom of the constant pressure chamber 4, surrounding the intake channel 2. The first spring 12 is installed in the elastic ring groove 16. A constant pressure plate 17 is provided on the outer wall of the upper end of the valve stem 11. The outer wall of the constant pressure plate 17 slides against the wall of the constant pressure chamber 4. The lower end of the first spring 12 is connected to the bottom of the elastic ring groove 16, and the upper end is connected to the lower side of the constant pressure plate 17. With this setup, when oxygen is supplied through valve body 1, the high-pressure oxygen in the oxygen cylinder impacts the lower end of valve stem 11, causing the lower end of valve stem 11 to separate from the air inlet ring 13. This allows the oxygen in the oxygen cylinder to pass sequentially along the inner wall of the air inlet channel 2 through the third air hole 14 and the fourth air hole 15 before entering the constant pressure chamber 4. The constant pressure chamber 4 controls the output pressure of the oxygen. When the pressure in the constant pressure chamber 4 is insufficient, the oxygen in the oxygen cylinder pushes the valve stem 11 upwards, allowing oxygen to enter the constant pressure chamber 4. When the pressure in the constant pressure chamber 4 is sufficient, the oxygen in the constant pressure chamber 4 exerts downward pressure on the valve stem 11, working in conjunction with the first spring 12 to block the air inlet ring 13. This maintains a constant oxygen pressure in the constant pressure chamber 4 above the constant pressure plate 17, which is beneficial for stable and pressure-controlled oxygen output.
[0023] A first sealing ring 18 is provided on the outer wall surrounding the upper part of the valve stem 11, and the outer wall of the first sealing ring 18 slides and seals against the inner wall of the air intake channel 2; a second sealing ring 19 is provided on the outer wall surrounding the constant pressure plate 17, and the outer wall of the second sealing ring 19 slides and seals against the cavity wall of the constant pressure chamber 4. By providing the first sealing ring 18, oxygen can be prevented from entering the constant pressure chamber 4 through the gap between the valve stem 11 and the air intake channel 2. By providing the second sealing ring 19, gas exchange between the upper and lower sides of the constant pressure plate 17 can be prevented, thus preventing the pressure above the constant pressure plate 17 from becoming unstable.
[0024] A rotating hole 20 communicating with the regulating chamber 5 is provided on the upper side of the valve body 1. A rotating rod 21 is rotatably mounted inside the rotating hole 20. The lower end of the rotating rod 21 is coaxially connected to the regulating plate 7, and the upper end is connected to a knob cover 22 on the upper side of the valve body 1. By setting the rotating rod 21 and the knob cover 22, the regulating plate 7 can be driven to rotate, so that the second air hole 8 on the regulating plate 7 can communicate with different first air holes 6, thereby controlling the output flow of oxygen.
[0025] A sealing ring groove 23 is provided around the bottom of the regulating chamber 5, surrounding the first air hole 6. A third sealing ring 24 is installed inside the sealing ring groove 23, and the upper side of the third sealing ring 24 slides and seals against the lower side of the regulating plate 7. A fourth sealing ring 25 is provided around the outer wall of the rotating rod 21, and the outer side of the fourth sealing ring 25 slides and seals against the wall of the rotating hole 20. By providing the third sealing ring 24, the edge at the connection between the first air hole 6 and the second air hole 8 can be sealed when the first air hole 6 and the second air hole 8 are aligned, preventing oxygen leakage during oxygen supply and affecting the adjusted oxygen supply flow rate. By providing the fourth sealing ring 25, the gap between the rotating rod 21 and the rotating hole 20 can be sealed, ensuring the stable rotation of the rotating rod 21 while preventing oxygen leakage.
[0026] The valve body 1 has several positioning slots 26 arranged around the rotating hole 20 on its upper side. The lower side of the knob cover 22 has a recessed elastic hole 27, within which a second spring 28 is installed. The upper end of the second spring 28 is connected to the bottom of the elastic hole 27, and the lower end is connected to a positioning bead 29. When the knob cover 22 rotates to the positioning slot 26, a portion of the lower end of the positioning bead 29 is engaged within the positioning slot 26, and the second air hole 8 is aligned and connected to the first air hole 6. This arrangement allows for positioning by using a positioning pin to engage with the positioning slot 26 when adjusting the alignment of the second air hole 8 with the first air hole 6. The number of positioning slots 26 is the same as the number of first air holes 6, and they are distributed in the same way, ensuring that when the positioning bead 29 rotates to the positioning slot 26, the first air hole 6 is perfectly aligned with the second air hole 8.
[0027] The valve body 1 has an inflation channel 30 connected to the air inlet channel 2 on its side. A one-way valve 31, which allows unidirectional flow from the outside to the inside, is installed within the inflation channel 30. The inflation channel 30 allows oxygen to be added to the oxygen cylinder, enabling its reuse. The one-way valve 31 prevents oxygen from leaking out of the inflation channel 30.
[0028] The valve body 1 has an exhaust passage 32 connected to the air intake passage 2 on its side, and a sealing plug 33 for sealing the exhaust passage 32 is also provided on the side of the valve body 1. By providing the exhaust passage 32, oxygen in the oxygen cylinder can be quickly discharged when necessary. By providing the sealing plug 33, the exhaust passage 32 can be sealed.
[0029] Although the present invention has been described herein with reference to several illustrative embodiments, it should be understood that many other modifications and implementations can be devised by those skilled in the art, which will fall within the scope and spirit of the principles disclosed herein. More specifically, various variations and modifications can be made to the components and / or layout of the subject matter combination within the scope of the disclosure, drawings, and claims. Besides variations and modifications to the components and / or layout, other uses will be apparent to those skilled in the art.
Claims
1. A direct-flow oxygen supply valve for oxygen cylinders, characterized in that, The system includes a valve body (1), in which an air intake channel (2) is vertically arranged. The lower end of the air intake channel (2) is connected to the lower end of the valve body (1) to form a connection port (3). The upper end of the air intake channel (2) is connected to a constant pressure chamber (4). A pressure reducing mechanism is provided at the connection between the constant pressure chamber (4) and the air intake channel (2). An adjusting chamber (5) is provided above the constant pressure chamber (4) in the valve body (1). The top of the constant pressure chamber (4) is vented by several first air intakes with different diameters. The hole (6) is connected to the bottom of the regulating cavity (5). The bottom of the regulating cavity (5) is provided with an adjusting plate (7) that rotates along the vertical axis. The adjusting plate (7) is provided with a second air hole (8) that runs through the upper and lower sides. The second air hole (8) can be rotated to be aligned and connected with the first air hole (6). The side of the valve body (1) is provided with an oxygen supply nozzle (9). The oxygen supply nozzle (9) is connected to the regulating cavity (5) above the adjusting plate (7) through an oxygen supply hole (10).
2. The oxygen cylinder direct-flow oxygen supply valve according to claim 1, characterized in that: The pressure reducing mechanism includes a valve stem (11) and a first spring (12). An intake ring (13) is provided in the middle of the intake channel (2). The upper diameter of the valve stem (11) matches the inner diameter of the intake channel (2). The lower diameter of the valve stem (11) is smaller than the diameter of the intake channel (2) but larger than the inner diameter of the intake ring (13). A third air hole (14) is horizontally provided at the lower part of the valve stem (11) and extends through both sides. The upper end of the valve stem (11) is provided with a third air hole (14) that extends through both sides. 4) A fourth air hole (15) is connected; the bottom of the constant pressure chamber (4) is provided with an elastic ring groove (16) around the air inlet channel (2), the first spring (12) is installed in the elastic ring groove (16), the outer wall of the upper end of the valve stem (11) is provided with a constant pressure plate (17), the outer wall of the constant pressure plate (17) slides against the wall of the constant pressure chamber (4), the lower end of the first spring (12) is connected to the bottom of the elastic ring groove (16), and the upper end is connected to the lower side of the constant pressure plate (17).
3. The oxygen cylinder direct-flow oxygen supply valve according to claim 2, characterized in that: A first sealing ring (18) is provided around the outer wall of the upper part of the valve stem (11), and the outer wall of the first sealing ring (18) slides and seals against the inner wall of the air intake channel (2); a second sealing ring (19) is provided around the outer wall of the constant pressure plate (17), and the outer wall of the second sealing ring (19) slides and seals against the cavity wall of the constant pressure chamber (4).
4. The oxygen cylinder direct-flow oxygen supply valve according to claim 1, characterized in that: The valve body (1) has a rotating hole (20) on its upper side that communicates with the regulating cavity (5). A rotating rod (21) is rotatably installed in the rotating hole (20). The lower end of the rotating rod (21) is coaxially connected to the regulating plate (7), and the upper end is connected to a knob cover (22) on the upper side of the valve body (1).
5. The oxygen cylinder direct-flow oxygen supply valve according to claim 4, characterized in that: The bottom of the adjustment chamber (5) is provided with a sealing ring groove (23) around the first air hole (6), and a third sealing ring (24) is installed in the sealing ring groove (23). The upper side of the third sealing ring (24) is slidably and sealingly fitted with the lower side of the adjustment plate (7). A fourth sealing ring (25) is provided around the outer wall of the rotating rod (21), and the outer side of the fourth sealing ring (25) is slidably and sealingly fitted with the hole wall of the rotating hole (20).
6. The oxygen cylinder direct-flow oxygen supply valve according to claim 4, characterized in that: The valve body (1) has several positioning slots (26) arranged around the rotating hole (20) on its upper side. The knob cover (22) has an elastic hole (27) recessed on its lower side. A second spring (28) is arranged in the elastic hole (27). The upper end of the second spring (28) is connected to the bottom of the elastic hole (27), and the lower end is connected to a positioning bead (29). When the positioning bead (29) rotates to the positioning slot (26) with the knob cover (22), a portion of the lower end of the positioning bead (29) is locked in the positioning slot (26), and the second air hole (8) is aligned and connected with the first air hole (6).
7. The oxygen cylinder direct-flow oxygen supply valve according to claim 1, characterized in that: The valve body (1) has an inflation channel (30) connected to the air intake channel (2) on its side, and a one-way valve (31) that flows unidirectionally from the outside to the inside is provided in the inflation channel (30).
8. The oxygen cylinder direct-flow oxygen supply valve according to claim 1, characterized in that: The valve body (1) has an exhaust passage (32) connected to the air intake passage (2) on its side, and a sealing plug (33) for sealing the exhaust passage (32) is provided on the side of the valve body (1).