Breathing nozzle valve of diving equipment

Abstract

The utility model belongs to the technical field of breathing nozzle valves, and discloses a breathing nozzle valve of diving equipment, and the lower end of a valve body of the breathing nozzle valve is provided with a mouthpiece connector connected with a mouthpiece; the valve element cylinder is rotationally connected into the breathing nozzle valve body, a handle part is arranged at the upper end of the valve element cylinder, and a valve element cylinder air inlet and outlet is formed in the lower end of the valve element cylinder. A one-way air inlet channel and a one-way air outlet channel are arranged on the two sides of the breathing nozzle valve body respectively, a valve element cylinder air inlet is formed in one side of the valve element cylinder, and a valve element cylinder air outlet is formed in the other side of the valve element cylinder. A drainage cover is connected to the back face of the breathing nozzle valve body, and a breathing nozzle valve body air inlet and outlet communicated with the drainage cover and the interior of the breathing nozzle valve body is formed in the portion, between the one-way air inlet channel and the one-way air outlet channel, of the breathing nozzle valve body. And a one-way drainage valve is arranged on the drainage cover. According to the utility model, the smooth underwater oxygen supply can be ensured; and meanwhile, internal water can be drained out and is prevented from entering the interior, so that the safety is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of breathing nozzle valve technology, specifically relating to a breathing nozzle valve for diving equipment. Background Technology

[0002] Originally, diving referred to activities involving entering the water below the surface with or without specialized tools for underwater exploration, salvage, repair, and underwater engineering. Later, diving gradually evolved into a recreational sport primarily focused on underwater activities, aiming to improve physical fitness and provide leisure and entertainment, and has become widely popular.

[0003] In the existing technology, when divers wear breathing apparatus underwater, water that enters through the mouthpiece can remain in the mouthpiece valve body. When divers inhale, they can easily suck the water from the mouthpiece valve body into their trachea, which can endanger their lives. Utility Model Content

[0004] The purpose of this invention is to provide a breathing valve for diving equipment to solve the aforementioned problems in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A breathing nozzle valve for a diving device includes a valve body, a valve core, and a mouthpiece. The lower end of the valve body has a mouthpiece connection port for connecting to the mouthpiece. The valve core is rotatably connected to the valve body, and its upper end has a handle extending from the upper end of the valve body to the outside of the valve body. The lower end of the valve core has a valve core inlet / outlet port communicating with the mouthpiece connection port. The valve body has a one-way inlet channel and a one-way outlet channel on each side. One side of the valve core has a valve core inlet for facilitating oxygen entry into the valve core through a one-way inlet channel, and the other side of the valve core has a valve core outlet for facilitating exhaled air exiting through a one-way outlet channel. A drain cover is connected to the back of the breath valve body. The breath valve body between the one-way inlet channel and the one-way outlet channel has a breath valve body inlet / outlet that connects the drain cover and the inside of the breath valve body. The drain cover is equipped with a one-way drain valve to drain water from the drain cover to the outside of the drain cover.

[0007] As a preferred technical solution of this utility model, a one-way water membrane is installed at the one-way drain valve to prevent water from flowing from the outside of the drain cover into the inside of the drain cover.

[0008] As a preferred technical solution of this utility model, the drainage cover is equipped with an automatic gas replenishment interface valve that is connected to the emergency oxygen tank.

[0009] As a preferred technical solution of this utility model, the automatic gas replenishment interface valve includes an interface valve body connected to the drain cover. The air inlet of the interface valve body is located outside the drain cover, and the air outlet of the interface valve body is located inside the drain cover. A ventilation component for controlling the ventilation of the automatic gas replenishment interface valve is provided between the air outlet of the interface valve body and the drain cover. This component controls the automatic gas replenishment interface valve to deliver oxygen into the drain cover when the air pressure inside the drain cover drops.

[0010] As a preferred technical solution of this utility model, the ventilation component includes an elastic cup, a sheet metal sheet, a T-shaped sealing rod, and a limiting nut. The air inlet channel of the automatic air replenishment valve includes a front air inlet channel near the air inlet and a rear air inlet channel near the air outlet. The rear air inlet channel is a T-shaped channel with its inner diameter gradually decreasing from the outside to the inside. The T-shaped head of the T-shaped sealing rod slides within the rear air inlet channel, and an airflow gap is provided between the T-shaped sealing rod and the inner wall of the rear air inlet channel. The rear air inlet channel is provided with a mechanism to hold the T-shaped sealing rod. A compression spring is positioned towards the front intake channel to press against the T-shaped sealing rod, thereby blocking the outlet of the front intake channel. The other end of the T-shaped sealing rod extends to the rear intake channel and is threadedly connected to the limit nut. One end of the sheet metal plate is clamped between the limit nut and the outlet of the interface valve body. The other end of the sheet metal plate is an arc-shaped adjustment part that abuts against the middle of the elastic cup. The elastic cup is installed on the drain cover, and the drain cover part corresponding to the elastic cup is threadedly connected to an end cap that presses the elastic cup against it and the sheet metal plate.

[0011] As a preferred technical solution of this utility model, a one-way air intake valve is installed in the one-way air intake channel, and a gas one-way membrane is installed on the one-way air intake valve to prevent gas from flowing from the body of the breather valve body through the one-way air intake channel to the body of the breather valve body.

[0012] As a preferred technical solution of this utility model, a one-way air outlet valve is installed in the one-way air outlet channel, and a one-way gas membrane is installed on the one-way air outlet valve to prevent gas from flowing from the body of the breathing nozzle valve body into the breathing nozzle valve body through the one-way air outlet channel.

[0013] As a preferred technical solution of this utility model, the outer wall of the one-way air inlet channel is provided with an external thread to facilitate connection with the oxygen inlet pipe thread, and the outer wall of the one-way air outlet channel is provided with an external thread to facilitate connection with the air outlet pipe thread.

[0014] As a preferred technical solution of this utility model, a limiting ring is installed at the upper end of the breathing nozzle valve body to press the valve core cylinder into the breathing nozzle valve body. The limiting ring is connected to the breathing nozzle valve body by bolts. An avoidance hole is opened in the middle of the limiting ring to facilitate the extension of the handle to the outside of the breathing nozzle valve body.

[0015] As a preferred technical solution of this utility model, the clearance hole is an arc-shaped hole. When the handle is rotated to one end of the arc-shaped hole, the valve core cylinder air inlet is correspondingly set with the one-way air inlet channel, and the valve core cylinder blocks the air inlet and outlet of the breather valve body. When the handle is rotated to the other end of the arc-shaped hole, the valve core cylinder air inlet or valve core cylinder air outlet is correspondingly set with the air inlet and outlet of the breather valve body.

[0016] Beneficial effects: This utility model features a one-way air inlet channel and a one-way air outlet channel on the breathing nozzle valve body. When the user inhales, oxygen enters the breathing nozzle valve body through the one-way air inlet channel, providing oxygen for the user's inhalation. Exhaled air is smoothly discharged through the one-way air outlet channel, ensuring a smooth oxygen supply. The user can rotate the valve core by turning the handle. When water needs to be drained from the breathing nozzle valve body, simply rotate the valve core to connect it to the drain cover, then blow air into the breathing nozzle valve body. The water inside the valve body will then be discharged through the one-way drain valve in the drain cover, preventing water from entering the interior. Turning the handle again resets the valve core, allowing normal underwater breathing using this breathing nozzle valve. Attached Figure Description

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

[0018] Figure 2 This is a top view of the present invention;

[0019] Figure 3 for Figure 2 Sectional view along axis AA;

[0020] Figure 4 for Figure 2 BB-direction sectional view;

[0021] Figure 5 This is an exploded view of the automatic air replenishment interface valve in this utility model.

[0022] In the diagram: 1-Breathing nozzle valve body; 101-Mouthpiece connection port; 102-One-way air intake channel; 103-One-way air outlet channel; 2-Valve core cylinder; 201-Handle; 3-Mouthpiece; 4-Drain cover; 401-End cap; 5-One-way drain valve; 6-Automatic air replenishment interface valve; 601-Interface valve body; 602-Elastic cup; 603-Sheet metal plate; 604-T-type sealing rod; 605-Limit nut; 7-One-way air intake valve; 8-One-way air outlet valve; 9-Oxygen inlet pipe; 10-Air outlet pipe; 11-Limit ring. Detailed Implementation

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the present utility model will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the accompanying drawings is only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. It should be noted that the description of these embodiments is used to help understand this utility model, but does not constitute a limitation on this utility model.

[0024] Example:

[0025] like Figures 1-4 As shown, this embodiment provides a breathing nozzle valve for a diving device, including a breathing nozzle valve body 1, a valve core cylinder 2, and a mouthpiece 3. The lower end of the breathing nozzle valve body 1 is provided with a mouthpiece connection port 101 for connecting to the mouthpiece 3, facilitating the installation and removal of the mouthpiece 3. The connection method can be snap-fit ​​or threaded connection, etc., and this embodiment does not impose specific limitations. The valve core cylinder 2 is rotatably connected inside the breathing nozzle valve body 1, and the upper end of the valve core cylinder 2 is provided with a handle portion 201 extending from the upper end of the breathing nozzle valve body 1 to the outside of the breathing nozzle valve body 1, facilitating the rotation of the valve core cylinder 2 via the handle portion 201 to change the engagement state between the valve core cylinder 2 and the breathing nozzle valve body 1. The lower end of the valve core cylinder 2 is provided with a valve core that communicates with the mouthpiece connection port 101. The valve body 1 of the breathing nozzle valve has an air inlet and outlet, which facilitates the user's inhalation and exhalation. One-way air inlet channel 102 and one-way air outlet channel 103 are respectively provided on both sides of the valve body 1. The one-way air inlet channel 102 is connected to the oxygen tank via a pipe, and the one-way air outlet channel 103 is connected to the air purification tank via a pipe. One side of the valve core cylinder 2 has an air inlet for oxygen to enter the valve core cylinder 2 through the one-way air inlet channel 102, and the other side of the valve core cylinder 2 has an air outlet for exhaled air to exit through the one-way air outlet channel 103. Thus, when the user inhales, oxygen from the oxygen tank can be drawn into the body, and then the stale air in the body can be exhaled, allowing the stale air to exit along the one-way air outlet channel 103, ensuring normal breathing for the user underwater.

[0026] The back of the breathing nozzle valve body 1 is connected to a drain cover 4. The breathing nozzle valve body 1 between the one-way air inlet channel 102 and the one-way air outlet channel 103 has a breathing nozzle valve body inlet / outlet port that connects the drain cover 4 and the inside of the breathing nozzle valve body 1. The drain cover 4 is provided with a one-way drain valve 5 that drains the water inside the drain cover 4 to the outside of the drain cover 4. When the user needs to drain the water inside the breathing nozzle valve body 1, he / she turns the handle 201 so that the valve core cylinder air inlet or air outlet is aligned with the breathing nozzle valve body inlet / outlet port. Then, he / she blows air into the breathing nozzle valve body 1 through the mouthpiece 3. The water inside the breathing nozzle valve body 1 can then be drained out through the one-way drain valve 5 in the drain cover 4. Then, he / she turns the handle 201 again so that the valve core cylinder 2 is reset. The user can then use this breathing nozzle valve to breathe normally underwater.

[0027] This invention features a one-way air intake channel 102 and a one-way air outlet channel 103 on the breather valve body 1. When the user inhales, oxygen enters the breather valve body 1 through the one-way air intake channel 102, providing oxygen for the user's inhalation. Exhaled air is smoothly discharged through the one-way air outlet channel 103, ensuring a smooth oxygen supply. The user can rotate the valve core cylinder 2 by turning the handle 201. When water needs to be drained from the breather valve body 1, simply rotate the valve core cylinder 2 to connect it to the drain cover 4. Then, the user blows air into the breather valve body 1, allowing the water inside to be drained through the one-way drain valve 5 in the drain cover 4, preventing water from entering the interior. Turning the handle 201 again resets the valve core cylinder 2, allowing normal underwater breathing using this breather valve.

[0028] As a preferred embodiment of this invention, it should be further explained that a one-way water membrane is installed at the one-way drain valve 5 to prevent water from flowing from the outside of the drain cover 4 into the inside of the drain cover 4. This installation structure is a conventional installation structure. When the pressure inside the drain cover 4 is greater than that outside, the one-way water membrane will open partly, allowing water to be discharged from the inside. Then, the external water pressure squeezes the one-way water membrane, causing the one-way water membrane to quickly seal the outlet, thereby preventing water from entering the drain cover 4.

[0029] As a preferred embodiment of this invention, it should be further noted that the drainage cover 4 is equipped with an automatic air replenishment interface valve 6 that is connected to the emergency oxygen tank, which can be used during semi-enclosed diving or in an emergency when the oxygen in the oxygen tank is insufficient.

[0030] As a preferred embodiment of this example, it should be further explained that the automatic air replenishment interface valve 6 includes an interface valve body 601 connected to the drain cover 4. The air inlet of the interface valve body 601 is located outside the drain cover 4 for easy connection to pipes, and the air outlet of the interface valve body 601 is located inside the drain cover 4 to isolate water. A ventilation component for controlling the air supply of the automatic air replenishment interface valve 6 is provided between the air outlet of the interface valve body 601 and the drain cover 4. This component controls the automatic air replenishment interface valve 6 to supply oxygen into the drain cover 4 when the air pressure inside the drain cover 4 drops. This makes it suitable for use during semi-enclosed diving or for emergency use when the oxygen in the oxygen cylinder is insufficient.

[0031] As a preferred embodiment of this invention, it should be further explained that the ventilation component includes an elastic cup 602, a sheet metal sheet 603, a T-shaped sealing rod 604, and a limiting nut 605. The air inlet channel of the automatic air replenishment valve 6 includes a front air inlet channel located near the air inlet and a rear air inlet channel located near the air outlet. The rear air inlet channel is a T-shaped channel with its inner diameter gradually decreasing from the outside to the inside. The T-shaped head of the T-shaped sealing rod 604 slides within the rear air inlet channel, and an air flow gap is provided between the T-shaped sealing rod 604 and the inner wall of the rear air inlet channel, allowing oxygen to enter the drain cover 4 through the air flow gap. A compression spring is provided in the rear air inlet channel to push the T-shaped sealing rod 604 against the front air inlet channel. Figure 3The compression spring has two ends that abut against the T-shaped head of the T-shaped sealing rod 604 and the inner wall of the rear air intake channel outlet, respectively. The compression spring presses against the T-shaped sealing rod 604 to block the outlet of the front air intake channel, ensuring a tight seal under normal conditions. The other end of the T-shaped sealing rod 604 extends to the outside of the rear air intake channel and is threadedly connected to the limit nut 605. One end of the sheet metal plate 603 is fitted onto the T-shaped sealing rod 604, and is clamped between the limit nut 605 and the air outlet of the interface valve body 601, ensuring the stability of one end of the sheet metal plate 603. The other end of the sheet metal plate 603 is an arc-shaped adjustment part that abuts against the middle of the elastic cup 602. When the internal air pressure of the drain cover 4... During descent, the elastic cup 602 presses the other end of the sheet metal sheet 603 into the drain cover 4, thereby causing one end of the sheet metal sheet 603 to have a flapping effect. The sheet metal sheet 603 then presses the limiting nut 605 away from the valve body 601 of the interface valve. The limiting nut 605 drives the T-shaped sealing rod 604 to compress the spring, causing the T-shaped sealing rod 604 to slide. This allows the front air intake channel to connect with the rear air intake channel, enabling oxygen to enter the drain cover 4. The elastic cup 602 is installed on the drain cover 4. The part of the drain cover 4 corresponding to the elastic cup 602 is threadedly connected to an end cap 401 that presses the elastic cup 602 against the sheet metal sheet 603, ensuring the stability of the elastic cup 602 and enabling quick installation and removal. It should be noted that, preferably, the end cap 401 is provided with a water leakage hole, and the elastic cup 602 is tightly fitted with the inner wall of the drain cover 4 to ensure sealing. In this way, when the air pressure inside the drain cover 4 drops, it is easier to form a pressure difference between the inside and outside, and the water pressure causes the middle part of the elastic cup 602 to squeeze the sheet metal sheet 603.

[0032] Preferred, such as Figure 3 As shown, an arc-shaped groove is provided in the middle of one end of the sheet metal sheet 603, which is sleeved on the T-shaped sealing rod 604. Limiting grooves are provided on both sides of the air outlet end of the air supply valve body 601. The two sides of one end of the sheet metal sheet 603 are respectively set in the two limiting grooves, which can enhance the stability of the sheet metal sheet 603. Of course, there is a gap between the two sides of one end of the sheet metal sheet 603 and the limiting groove, allowing one end of the sheet metal sheet 603 to be tilted up, thereby prying the limiting nut 605.

[0033] As a preferred embodiment of this invention, it should be further explained that a one-way air intake valve 7 is installed in the one-way air intake channel 102. The one-way air intake valve 7 is equipped with a gas one-way membrane to prevent gas from flowing from inside the breathing nozzle valve body 1 through the one-way air intake channel 102 to outside the breathing nozzle valve body 1. This can prevent turbid air from flowing towards the oxygen tank when the user exhales turbid air.

[0034] As a preferred embodiment of this example, it should be further explained that a one-way air outlet valve 8 is installed in the one-way air outlet channel 103. The one-way air outlet valve 8 is equipped with a gas one-way membrane to prevent gas from flowing from outside the breathing nozzle valve body 1 into the breathing nozzle valve body 1 through the one-way air outlet channel 103. This can ensure that the airflow can be stably discharged when the user exhales stale air, while also preventing stale air from accumulating in the valve core cylinder 2.

[0035] As a preferred embodiment of this invention, it should be further noted that the outer wall of the one-way air intake channel 102 is provided with an external thread to facilitate threaded connection with the oxygen intake pipe 9, and the outer wall of the one-way air outlet channel 103 is provided with an external thread to facilitate threaded connection with the air outlet pipe 10, which can achieve rapid installation.

[0036] As a preferred embodiment of this example, it should be further explained that a limiting ring 11 is installed at the upper end of the breathing nozzle valve body 1 to press the valve core cylinder 2 into the breathing nozzle valve body 1. The limiting ring 11 is connected to the breathing nozzle valve body 1 by bolts. By pressing the valve core cylinder 2 with the limiting ring 11, the stability of the valve core cylinder 2 can be ensured, and it can also be installed and removed, improving flexibility. The limiting ring 11 has an avoidance hole in the middle to facilitate the extension of the handle part 201 to the outside of the breathing nozzle valve body 1, without affecting the rotation of the valve core cylinder 2 through the handle part 201.

[0037] As a preferred embodiment of this invention, it should be further explained that the clearance hole is an arc-shaped hole. When the handle 201 is rotated to one end of the arc-shaped hole, the valve core cylinder air inlet is correspondingly set with the one-way air inlet channel 102, and the valve core cylinder 2 blocks the air inlet and outlet of the breather valve body, so that no oxygen will enter and affect the drainage during drainage. When the handle 201 is rotated to the other end of the arc-shaped hole, the valve core cylinder air inlet or valve core cylinder air outlet is correspondingly set with the air inlet and outlet of the breather valve body, so that the water in the valve core cylinder 2 can be discharged smoothly.

[0038] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A breathing nozzle valve for a diving device, characterized in that, The device includes a breathing nozzle valve body (1), a valve core cylinder (2), and a mouthpiece (3). The lower end of the breathing nozzle valve body (1) is provided with a mouthpiece connection port (101) for connecting to the mouthpiece (3). The valve core cylinder (2) is rotatably connected inside the breathing nozzle valve body (1), and the upper end of the valve core cylinder (2) is provided with a handle (201) extending from the upper end of the breathing nozzle valve body (1) to the outside of the breathing nozzle valve body (1). The lower end of the valve core cylinder (2) is provided with a mouthpiece connection port (101) for connecting to the mouthpiece (3). The valve core cylinder is connected to the valve core cylinder inlet and outlet ports via the connection port (101); the valve body (1) of the breathing nozzle valve is provided with a one-way inlet channel (102) and a one-way outlet channel (103) on both sides respectively; the valve core cylinder (2) is provided with a valve core cylinder inlet port on one side to facilitate oxygen entering the valve core cylinder (2) from the one-way inlet channel (102); the valve core cylinder (2) is provided with a valve core cylinder outlet port on the other side to facilitate exhaled air being discharged from the one-way outlet channel (103); The back of the breathing nozzle valve body (1) is connected to a drain cover (4). The breathing nozzle valve body (1) between the one-way air inlet channel (102) and the one-way air outlet channel (103) is provided with a breathing nozzle valve body inlet and outlet port that connects the drain cover (4) and the inside of the breathing nozzle valve body (1). The drain cover (4) is provided with a one-way drain valve (5) that drains the water inside the drain cover (4) to the outside of the drain cover (4).

2. The breathing nozzle valve of a diving device according to claim 1, characterized in that, A one-way water membrane is installed at the one-way drain valve (5) to prevent water from flowing from the outside of the drain cover (4) into the inside of the drain cover (4).

3. A breathing nozzle valve for a diving device according to claim 1 or 2, characterized in that, The drain cover (4) is equipped with an automatic gas replenishment interface valve (6) that is connected to the emergency oxygen tank.

4. The breathing nozzle valve of a diving device according to claim 3, characterized in that, The automatic gas replenishment interface valve (6) includes an interface valve body (601) connected to the drain cover (4). The air inlet of the interface valve body (601) is located outside the drain cover (4), and the air outlet of the interface valve body (601) is located inside the drain cover (4). A ventilation component for controlling the ventilation of the automatic gas replenishment interface valve (6) is provided between the air outlet of the interface valve body (601) and the drain cover (4). This component controls the automatic gas replenishment interface valve (6) to supply oxygen to the drain cover (4) when the air pressure inside the drain cover (4) drops.

5. The breathing nozzle valve of a diving device according to claim 4, characterized in that, The ventilation assembly includes an elastic cup (602), a sheet metal sheet (603), a T-shaped sealing rod (604), and a limiting nut (605). The air intake channel of the automatic air replenishment interface valve (6) includes a front air intake channel located near the air inlet and a rear air intake channel located near the air outlet. The rear air intake channel is a T-shaped channel with an inner diameter that gradually decreases from the outside to the inside. The T-shaped head of the T-shaped sealing rod (604) slides within the rear air intake channel, and an airflow gap is provided between the T-shaped sealing rod (604) and the inner wall of the rear air intake channel. A compression spring is provided in the rear air intake channel to push the T-shaped sealing rod (604) against the front air intake channel, so as to compress the T-shaped sealing rod (604) by means of the compression spring. The pressure of the plug rod (604) causes the T-shaped plug rod (604) to block the outlet of the front air intake channel; the other end of the T-shaped plug rod (604) extends to the outside of the rear air intake channel and is threadedly connected to the limit nut (605); one end of the sheet metal plate (603) is clamped between the limit nut (605) and the air outlet of the interface valve body (601); the other end of the sheet metal plate (603) is an arc-shaped adjustment part that abuts against the middle of the elastic cup (602); the elastic cup (602) is installed on the drain cover (4); the part of the drain cover (4) corresponding to the elastic cup (602) is threadedly connected to an end cap (401) that presses the elastic cup (602) against it and the sheet metal plate (603).

6. The breathing nozzle valve of a diving device according to claim 1, characterized in that, A one-way air intake valve (7) is installed in the one-way air intake channel (102), and a gas one-way membrane is installed on the one-way air intake valve (7) to prevent gas from flowing from inside the breath valve body (1) through the one-way air intake channel (102) to outside the breath valve body (1).

7. The breathing nozzle valve of a diving device according to claim 1, characterized in that, A one-way air outlet valve (8) is installed in the one-way air outlet channel (103), and a gas one-way membrane is installed on the one-way air outlet valve (8) to prevent gas from flowing from outside the breathing nozzle valve body (1) into the breathing nozzle valve body (1) through the one-way air outlet channel (103).

8. A breathing nozzle valve for a diving device according to claim 1, 6, or 7, characterized in that, The outer wall of the one-way air intake channel (102) is provided with an external thread to facilitate threaded connection with the oxygen intake pipe (9), and the outer wall of the one-way air outlet channel (103) is provided with an external thread to facilitate threaded connection with the air outlet pipe (10).

9. The breathing nozzle valve of a diving device according to claim 1, characterized in that, The upper end of the breathing nozzle valve body (1) is equipped with a limiting ring (11) that presses the valve core cylinder (2) into the breathing nozzle valve body (1). The limiting ring (11) is connected to the breathing nozzle valve body (1) by bolts. The middle part of the limiting ring (11) is provided with a clearance hole to facilitate the extension of the handle part (201) to the outside of the breathing nozzle valve body (1).

10. A breathing nozzle valve for a diving device according to claim 9, characterized in that, The clearance hole is an arc-shaped hole. When the handle (201) is rotated to one end of the arc-shaped hole, the valve core cylinder air inlet is correspondingly set with the one-way air inlet channel (102), and the valve core cylinder (2) blocks the air inlet and outlet of the breathing nozzle valve body. When the handle (201) is rotated to the other end of the arc-shaped hole, the valve core cylinder air inlet or valve core cylinder air outlet is correspondingly set with the air inlet and outlet of the breathing nozzle valve body.

Images