Swivel type pressure reducing valve of compressed oxygen self-rescuer

Abstract

The utility model discloses a rotating ring type pressure reducing valve of a compressed oxygen self-rescuer, which comprises an outer shell, an inner shell, a piston, a touch control component and a rotating ring component, and the rotating ring component consists of a rotating ring, a ball body, an ejector rod and an elastic reset piece. The bottom of the sealing hole is communicated with the inner cavity; the ejector rod, the ball and the elastic reset piece are arranged in the mounting hole, the elastic reset piece provides reset elastic force, and friction is reduced. The rotating ring is rotationally connected with the shell, the inner wall is provided with a downward pressing action wall and a reset action wall, when the rotating ring is rotated, the downward pressing action wall overcomes elastic force to push the ejector rod to block the sealing hole, and when the rotating ring is rotated to the reset action wall, the ejector rod opens the sealing hole under the elastic force, and gas on-off control is achieved. The operation is simple and labor-saving, the reliability is high, and the risk of misoperation in emergency is reduced; the limitation of the traditional mounting direction is broken through, the valve can be axially mounted at any angle, and the adaptability and design flexibility of the self-rescuer under different working conditions are enhanced.

Description

Technical Field

[0001] This utility model relates to the technical field of compressed oxygen self-rescue device components, specifically a rotary pressure reducing valve for a compressed oxygen self-rescue device. Background Technology

[0002] In the existing field of compressed oxygen self-rescue devices, the pressure reducing valve is a key component, and its design and performance directly affect the safety and reliability of the equipment. Traditional pressure reducing valves typically employ complex mechanical structures, which not only increases manufacturing costs but may also affect the ease of operation and maintenance difficulty of the device. Especially in emergency situations, the rapid and reliable operation of the pressure reducing valve to ensure that users can obtain the necessary oxygen supply in a timely manner is of paramount importance.

[0003] Traditional pressure reducing valves often require specific installation orientations or postures, such as having the switch facing upwards for ease of operation, which limits their application scenarios and flexibility. Furthermore, valve control requires manual button pressing, which may become impossible to press in emergencies due to high internal stress. The need for installation in a specific direction also restricts the portability and adaptability of self-rescue devices to various working conditions.

[0004] To address the aforementioned problems, this invention proposes an improved rotary pressure reducing valve. Utility Model Content

[0005] In view of the shortcomings in the prior art, this utility model provides a rotary pressure reducing valve for a compressed oxygen self-rescue device.

[0006] The technical solution adopted by this utility model is: a rotary pressure reducing valve for a compressed oxygen self-rescue device, including a shell, an inner shell, a piston and a touch control assembly, and also including a rotary assembly, wherein the rotary assembly includes a rotary ring, a push rod, an elastic reset member and a ball integrally formed on the push rod;

[0007] The outer shell is provided with mounting holes, and the bottom of the mounting holes is provided with sealing holes that communicate with the inner cavity;

[0008] The push rod, ball, and elastic reset member are installed in the mounting hole, and the elastic reset member provides the push rod and ball with a reset force away from the sealing hole;

[0009] The rotating ring is rotatably connected to the outer shell. The inner wall of the rotating ring is provided with a pressing wall and a resetting wall. When the rotating ring rotates to the pressing wall, the pressing wall overcomes the elastic force of the elastic resetting member and pushes the top rod towards the sealing hole to seal and block the sealing hole. When the rotating ring rotates to the resetting wall, under the elastic force of the elastic resetting member, the top of the top rod disengages from the sealing hole and opens the sealing hole.

[0010] Furthermore, the elastic reset element is a helical spring, with one end abutting against the bottom wall of the mounting hole and the other end acting on the spring step of the top rod.

[0011] Furthermore, a sealing ring 1 is provided on the outer wall of the top rod to seal against the inner wall of the mounting hole, and a sealing ring 2 is provided on the top of the top rod to seal against the sealing hole.

[0012] Furthermore, it also includes a limiting component, which includes a positioning screw that is threadedly connected to the screw hole of the swivel ring, and an arc-shaped groove is provided on the outer wall of the housing.

[0013] The beneficial effects of this utility model are:

[0014] 1. The rotary pressure reducing valve uses a rotary control mechanism to seal or open the sealing hole, completely changing the traditional manual button operation. The valve can be easily opened and closed with a simple rotary rotation, making it convenient and labor-saving. This operation method is not only simple and intuitive but also highly reliable, greatly reducing the risk of rescue failure due to operational errors and buying valuable survival time for users in crisis situations.

[0015] 2. The design of the rotating assembly makes the pressure reducing valve no longer dependent on the specific orientation of the switch. Users do not need to consider the installation direction, allowing the valve to be installed at any angle in the axial direction. This breaks through the limitation of traditional pressure reducing valves that require fixed-direction installation and improves the overall design flexibility of the self-rescue device.

[0016] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The utility model will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the axial cross-section of this utility model.

[0019] Figure 3 Schematic diagram of the cross-section of the rotating part of this utility model. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0022] This utility model provides a rotary pressure reducing valve for a compressed oxygen self-rescue device.

[0023] In this embodiment, refer to Figure 1-3 The rotary pressure reducing valve of the compressed oxygen self-rescue device includes a shell 1, an inner shell 2, a piston 3 and a touch control component 4, and also includes a rotary ring assembly, which includes a rotary ring 5, a push rod 7, an elastic reset component 8 and a ball 6 integrally formed on the push rod.

[0024] The outer shell is provided with a mounting hole 9, and the bottom of the mounting hole 9 is provided with a sealing hole 11 that communicates with the inner cavity 10;

[0025] The push rod, ball, and elastic reset member are installed in the mounting hole, and the elastic reset member provides the push rod and ball with a reset force away from the sealing hole;

[0026] The rotating ring is rotatably connected to the outer shell. The inner wall of the rotating ring is provided with a pressing wall 13 and a resetting wall 14. When the rotating ring rotates to the pressing wall, the pressing wall overcomes the elastic force of the elastic resetting member and pushes the top rod towards the sealing hole to seal and block the sealing hole. When the rotating ring rotates to the resetting wall, under the elastic force of the elastic resetting member, the top of the top rod disengages from the sealing hole and opens the sealing hole.

[0027] In this embodiment, a rotating ring assembly is added to the traditional pressure reducing valve. This assembly consists of a rotating ring, a ball, a push rod, and a resilient reset element. The mounting hole on the outer casing and the sealing hole form a gas flow control channel. The push rod, ball, and resilient reset element are installed within the mounting hole. The resilient reset element provides elastic force to move the push rod and ball away from the sealing hole. The downward pressure wall and the reset wall on the inner wall of the rotating ring cooperate with the push rod. When the rotating ring is rotated, the downward pressure wall overcomes the elastic force of the resilient reset element, pushing the push rod to block the sealing hole and obstructing gas flow. When rotated to the reset wall, the push rod disengages from the sealing hole under the elastic force of the resilient reset element, opening the gas passage and achieving gas control.

[0028] Specifically, the elastic reset component is a helical spring, one end of which abuts against the bottom wall of the mounting hole, and the other end acts on the spring step 15 of the top rod.

[0029] In this embodiment, a helical spring is used as the elastic reset element. One end of the helical spring abuts against the bottom wall of the mounting hole, and the other end acts on the spring step of the push rod. When the downward pressure of the rotating ring pushes the push rod towards the sealing hole, the helical spring is compressed, storing elastic potential energy. When the rotating ring rotates to the reset wall and loses its downward pressure, the helical spring releases its elastic potential energy, pushing the push rod away from the sealing hole, thus achieving the reset action. The helical spring has a simple structure, stable elastic performance, and can continuously provide a stable reset force for the push rod.

[0030] Specifically, the outer wall of the top rod is provided with a sealing ring 16 that seals with the inner wall of the mounting hole, and the top of the top rod is provided with a sealing ring 17 that seals with the sealing hole.

[0031] In this embodiment, sealing performance is improved by setting sealing ring one and sealing ring two.

[0032] Specifically, it also includes a limiting component, which includes a positioning screw 19 that is threadedly connected to the screw hole of the rotating ring, and an arc groove 20 is provided on the outer wall of the housing.

[0033] In this embodiment, the positioning screw in the limiting assembly is threadedly connected to the screw hole of the rotating ring. By adjusting the position of the positioning screw in the screw hole, the rotation angle of the rotating ring can be limited. The arc groove on the outer wall of the outer shell provides a movement track for the positioning screw, so that the positioning screw can move relative to the rotating ring along the arc groove during rotation, and at the same time play a limiting role, ensuring that the rotating ring can only rotate within the specified angle range, thereby precisely controlling the movement stroke of the push rod and ensuring that the push rod can accurately seal and open the sealing hole.

[0034] Attention all technical personnel: Although this utility model has been described according to the specific embodiments above, the concept of this utility model is not limited to this utility model. Any modification that utilizes the concept of this utility model will be included within the scope of protection of this patent right.

Claims

1. A rotary pressure reducing valve for a compressed oxygen self-rescue device, comprising a housing, an inner housing, a piston, and a touch control assembly, characterized in that: It also includes a rotating ring assembly, which includes a rotating ring, a push rod, an elastic reset member, and a ball integrally formed on the push rod; The outer shell is provided with mounting holes, and the bottom of the mounting holes is provided with sealing holes that communicate with the inner cavity; The push rod, ball, and elastic reset member are installed in the mounting hole, and the elastic reset member provides the push rod and ball with a reset force away from the sealing hole; The rotating ring is rotatably connected to the outer shell. The inner wall of the rotating ring is provided with a pressing wall and a resetting wall. When the rotating ring rotates to the pressing wall, the pressing wall overcomes the elastic force of the elastic resetting member and pushes the top rod towards the sealing hole to seal and block the sealing hole. When the rotating ring rotates to the resetting wall, under the elastic force of the elastic resetting member, the top of the top rod disengages from the sealing hole and opens the sealing hole.

2. The rotary pressure reducing valve of the compressed oxygen self-rescue device according to claim 1, characterized in that: The elastic reset component is a helical spring, with one end abutting against the bottom wall of the mounting hole and the other end acting on the spring step of the top rod.

3. The rotary pressure reducing valve of the compressed oxygen self-rescue device according to claim 1, characterized in that: The outer wall of the top rod is provided with a sealing ring one that seals with the inner wall of the mounting hole, and the top of the top rod is provided with a sealing ring two that seals with the sealing hole.

4. The rotary pressure reducing valve of the compressed oxygen self-rescue device according to claim 1, characterized in that: It also includes a limiting component, which includes a positioning screw that is threadedly connected to the screw hole of the swivel ring, and an arc-shaped groove is provided on the outer wall of the housing.

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