A self-contained breathing apparatus with a gauge bottle valve

Abstract

This utility model relates to a self-contained breathing apparatus (SCBA) valve with a pressure gauge. The pressure gauge features a double-sided display structure, with arc-shaped pressure plates at both ends clearly marked with pressure values, allowing users to intuitively read the pressure inside the cylinder from different angles. The other two ends of the pressure gauge have symmetrically arranged arc-shaped grooves, with a sealing ring on the lower side that closely matches the outer contour of the pressure gauge. The upper side is equipped with a transparent cover that also matches the outer contour of the pressure gauge. The transparent cover is fixed to the base by a circular pressure plate and bolts. The base and valve body are integrally formed, enhancing the overall structural stability. Furthermore, the two arc-shaped pressure plates of the pressure gauge share a single integrated pressure indicator needle. The entire valve structure is compact, and through optimized design, the overall weight is effectively reduced, improving operational convenience and safety. It provides users with a lighter and more reliable breathing guarantee and is suitable for the field of self-contained breathing apparatus.

Description

Technical Field

[0001] This utility model relates to a self-contained air respirator with a gauge valve, belonging to the technical field of self-contained air respirators. Background Technology

[0002] Existing self-contained breathing apparatuses (SCBAs) require a pressure gauge to display the cylinder pressure in real time so that users can monitor the remaining air volume. However, traditional SCBAs and their associated cylinder valves are complex and heavy, placing a significant physical burden on users. Especially during prolonged use or high-intensity work, the excessive weight significantly increases user fatigue, impacting work efficiency and user experience.

[0003] Furthermore, traditional bottle valve designs have certain limitations in terms of airflow control and pressure monitoring. For example, the pressure gauges on some bottle valves are not intuitive enough, requiring users to view the pressure from a specific angle to accurately read the value, which may delay judgment in emergency situations. Additionally, the airflow control of some bottle valves is not flexible enough, making adjustments to the airflow rate cumbersome and unable to quickly adapt to different usage needs.

[0004] Therefore, optimizing the valve structure to reduce overall weight and improve operational convenience and safety while ensuring the functionality of self-contained breathing apparatus (SCBA) has always been a key research focus for those skilled in the art. This invention addresses these shortcomings of existing technologies by proposing a novel gauge-equipped valve for SCBAs. The aim is to effectively reduce overall weight and improve user experience through optimized valve structure, while simultaneously ensuring the safety and reliability of the equipment. Utility Model Content

[0005] This invention overcomes the shortcomings of existing technologies and provides a self-contained air respirator with a dial bottle valve. By optimizing the valve structure, the overall weight is effectively reduced, saving the user's physical strength.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a self-contained air breathing apparatus with a gauge cylinder valve, including a valve body, an air guide tube at the lower end of the valve body for connecting to an air cylinder, a pressure gauge at the upper end of the valve body, the pressure gauge having a double-sided display structure, a pressure regulator connection interface and a rotary switch respectively provided on the side of the valve body, the pressure regulator connection interface and the rotary switch being vertically arranged, the rotary switch being used to open and close the valve body and adjust the airflow within the valve body, the pressure regulator connection interface being used to connect to the pressure regulator, the rotary switch being used to control the airflow interruption and flow rate of the valve body, the two ends of the pressure gauge having arc-shaped pressure indication plates, the other two ends of the pressure gauge having symmetrically arranged arc-shaped groove structures, a sealing ring consistent with the outer contour of the pressure gauge being provided on the lower side of the pressure gauge, and a transparent cover consistent with the outer contour of the pressure gauge being provided on the upper side of the pressure gauge, completely covering the pressure gauge.

[0007] Furthermore, the lower end of the pressure gauge is mounted on the valve body via a base. The base is vertically mounted on the valve body at the position of the arc-shaped groove structure of the pressure gauge. The base, the mounting seat, and the valve body are integrally formed. A circular pressure plate is provided on the upper side of the transparent cover. A recessed groove is provided on the top side of the circular pressure plate at the position of the pressure gauge. Bolts are provided on both sides of the recessed groove, which are connected to the mounting seat to fix the circular pressure plate and the base together.

[0008] Furthermore, the arc-shaped pressure indicator plate is marked with pressure value scales, and the two pressure indicator plates share a single integrated pressure indicator needle.

[0009] Furthermore, a safety valve is provided on the valve body.

[0010] Furthermore, the rotary switch may or may not have a self-locking function. The advantages of this invention compared to existing technologies are: by using an irregularly shaped design for the pressure gauge, the overall material usage is reduced, effectively lowering the overall weight without affecting usability; the rotary switch is connected via an adjusting shaft and adjusting screw in a movable, press-fitting manner, making it easy to turn and further reducing the overall weight. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings.

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 This is a front view structural diagram of the present invention.

[0014] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0015] Figure 4 This is a schematic diagram of the exploded structure of this utility model.

[0016] Figure 5 This is a schematic diagram showing the connection between this utility model and a gas cylinder.

[0017] Figure 6 This is a schematic diagram of the existing technology.

[0018] In the diagram: 1. Valve body; 2. Air guide pipe; 3. Pressure gauge; 4. Connection interface with pressure reducer; 5. Rotary switch; 51. Adjusting screw; 52. Adjusting shaft; 53. Tightening screw; 54. Knob support; 55. Pressure regulating knob; 56. Sealing plug; 57. Anti-loosening nut; 6. Sealing ring; 7. Transparent cover; 8. Base; 9. Mounting seat; 10. Circular pressure plate; 11. Recessed groove; 12. Bolt; 13. Integrated pressure indicator needle; 14. Safety valve. Detailed Implementation

[0019] The present invention will be further described below with reference to specific embodiments.

[0020] like Figures 1-6As shown, this utility model discloses a self-contained air breathing apparatus with a gauge cylinder valve, comprising a valve body 1, an air guide tube 2 at the lower end of the valve body 1 for connecting to an air cylinder, a pressure gauge 3 at the upper end of the valve body 1, the pressure gauge 3 having a double-sided display structure, a pressure regulator connection interface 4 and a rotary switch 5 respectively provided on the side of the valve body 1, the pressure regulator connection interface 4 and the rotary switch 5 being vertically arranged, the rotary switch 5 being used to switch the valve body 1 on and off and adjust the airflow within the valve body 1, the pressure regulator connection interface 4 being used to connect to the pressure regulator, and the rotary switch 5 being used to control the airflow interruption and flow rate of the valve body 1, the pressure gauge 3 having arc-shaped pressure indicators at both ends, and arc-shaped groove structures symmetrically provided at the other two ends of the pressure gauge 3, a sealing ring 6 consistent with the outer contour of the pressure gauge 3 being provided on the lower side of the pressure gauge 3, and a transparent cover 7 consistent with the outer contour of the pressure gauge 3 being provided on the upper side of the pressure gauge 3, completely covering the pressure gauge 3. The pressure gauge 3 is mounted on the valve body 1 via a base 8 at its lower end. A mounting seat 9 is vertically positioned on the base 8 corresponding to the arc-shaped groove of the pressure gauge 3. The base 8, mounting seat 9, and valve body 1 are integrally formed. A circular pressure plate 10 is positioned on the upper side of the transparent cover 7. A recessed groove 11 is positioned on the top side of the circular pressure plate 10 corresponding to the pressure gauge 3. Bolts 12 are positioned on both sides of the recessed groove 11, connecting it to the mounting seat 9 and fixing the circular pressure plate 10 to the base 8. The arc-shaped pressure indicator plate is marked with pressure value graduations, and both pressure indicator plates share a single integrated pressure indicator needle 13. A safety valve 14 is positioned on the side of the valve body 1, with its axis perpendicular to the axis of the valve body 1. Alternatively, the safety valve 14 can be positioned on the front of the valve body 1.

[0021] In this embodiment, the rotary switch 5 may or may not have a self-locking function. Its structure includes: an adjusting screw 51, an adjusting shaft 52, a clamping screw 53, a knob support 54, and a pressure regulating knob 55. The adjusting screw 51 is pressed against the air intake channel of the valve body 1 by a sealing plug 56 at its bottom, and the adjusting screw 51 is threadedly connected to the side of the valve body 1. The adjusting shaft 52 is movably connected to the upper end of the adjusting screw 51, and clamping screws 53 are provided at the outer ends of the adjusting screw 51 and the adjusting shaft 52. A knob support 54 is provided on the outer side of the clamping screw 53. The pressure regulating knob 55 is fixedly mounted on the adjusting shaft 52 by an anti-loosening nut 57 at its top. When the self-locking function is present, the anti-loosening groove at the bottom of the anti-loosening nut 57 matches and engages with the anti-loosening groove at the top of the adjusting shaft 52 to prevent loosening. In this embodiment, the rotary switch 5 controls the airflow through the adjusting screw 51 and the adjusting shaft 52. The adjusting screw 51 is pressed against the air inlet channel of the valve body 1 by the sealing plug 56 at the bottom, and the adjusting shaft 52 is movably connected to the upper end of the adjusting screw 51. By turning the pressure regulating knob 55, the airflow rate can be adjusted to achieve airflow on / off control. The pressure reducing interface 4 is connected to the pressure reducing device, and the air in the gas cylinder is delivered to the breathing mask through the pressure reducing device by the control of the knob switch 5 for the user to breathe.

[0022] In this embodiment, the pressure gauge 3 has a double-sided display structure with arc-shaped pressure indicator plates at both ends, marked with pressure value scales. The pressure gauge 3 is fixed to the valve body 1 by the base 8, and a transparent cover 7 is provided on its upper side to completely cover the pressure gauge 3 and protect it from external interference. The two arc-shaped pressure indicator plates share an integrated pressure indicator needle 13, which can display the pressure in the gas cylinder in real time, ensuring that the user can know the remaining gas volume in the cylinder at any time.

[0023] In this embodiment, a safety valve 14 is provided on the side of the valve body 1 opposite to the rotary switch 5. When the pressure inside the gas cylinder exceeds the set value, the safety valve 14 will automatically open to release the excess pressure and ensure safe use.

[0024] In this embodiment, by designing the pressure gauge 3 with an irregular shape, the overall material usage of the pressure gauge is reduced, effectively lowering the overall weight. The design of the transparent cover 7 and the sealing ring 6 not only protects the pressure gauge but also further optimizes the structure and reduces weight. The rotary switch 5 is connected by an adjustable shaft 52 and an adjusting screw 51 through a movable clamping connection, making it easy to turn and further reducing the overall weight.

[0025] In this embodiment, the structural design of the rotary switch 5 makes airflow on / off and flow rate adjustment more convenient. The movable connection between the adjusting screw 51 and the adjusting shaft 52, along with the clamping screw 53 and the knob support 54, ensures the stability and reliability of the rotary switch. The double-sided pressure gauge 3 allows users to clearly read the pressure value from different angles, improving ease of use. The safety valve 14 ensures that excess pressure is automatically released when the gas cylinder pressure is too high, avoiding safety hazards caused by excessive pressure. The design of the transparent cover 7 and sealing ring 6 of the pressure gauge 3 not only protects the pressure gauge but also improves its dustproof and waterproof performance, extending its service life.

[0026] In this embodiment, the entire bottle valve structure is compact, and the various components are fixed together by bolts 12, clamping screws 53, and other connecting parts, ensuring overall stability and reliability. The design of the circular pressure plate 10 and the base 8 further optimizes the structure, making it more compact.

[0027] Through the above design, the self-contained air respirator with gauge bottle valve of this utility model not only effectively reduces the overall weight and improves the convenience and safety of operation, but also optimizes the structure, making it more compact and reliable.

[0028] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A self-contained breathing apparatus with a gauge cylinder valve, comprising a valve body (1), wherein an air guide tube (2) is provided at the lower end of the valve body (1) for connecting to a gas cylinder, and a pressure gauge (3) is provided at the upper end of the valve body (1), the pressure gauge (3) having a double-sided display structure, and a pressure regulator connection interface (4) and a rotary switch (5) are respectively provided on the side of the valve body (1), the pressure regulator connection interface (4) and the rotary switch (5) being vertically arranged, the rotary switch (5) being used to switch the valve body (1) on and off and to regulate the airflow within the valve body (1), the pressure regulator connection interface (4) being used to connect to the pressure regulator, and the rotary switch (5) being used to control the airflow interruption and flow rate of the valve body (1), characterized in that, The pressure gauge (3) has arc-shaped pressure indication plates at both ends, and arc-shaped groove structures are symmetrically arranged at the other two ends of the pressure gauge (3). A sealing ring (6) with the same outer contour as the pressure gauge (3) is arranged on the lower side of the pressure gauge (3), and a transparent cover (7) with the same outer contour as the pressure gauge (3) is arranged on the upper side of the pressure gauge (3) to completely cover the pressure gauge (3).

2. A self-contained breathing apparatus belt-mounted bottle valve according to claim 1, wherein, The lower end of the pressure gauge (3) is mounted on the valve body (1) via a base (8). The base (8) is vertically mounted with a mounting seat (9) corresponding to the arc-shaped groove structure of the pressure gauge (3). The base (8), mounting seat (9) and valve body (1) are integrally formed. A circular pressure plate (10) is provided on the upper side of the transparent cover (7). A recessed groove (11) is provided on the top side of the circular pressure plate (10) corresponding to the position of the pressure gauge (3). Bolts (12) are provided on both sides of the recessed groove (11). The bolts (12) are connected to the mounting seat (9) to fix the circular pressure plate (10) and the base (8) together.

3. A self-contained breathing apparatus belt-mounted bottle valve according to claim 1 or 2, wherein, The arc-shaped pressure indicator plate is marked with pressure value scale, and the two pressure indicator plates share an integrated pressure indicator needle (13).

4. A self-contained breathing apparatus belt-mounted bottle valve according to claim 3, wherein, A safety valve (14) is provided on the valve body (1).

5. A self-contained breathing apparatus belt-mounted bottle valve according to claim 4, wherein, The rotary switch (5) may or may not have a self-locking function.

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