WO2005037641A1

WO2005037641A1 - Impermeable body life suit in water

Info

Publication number: WO2005037641A1
Application number: PCT/CN2004/000915
Authority: WO
Inventors: Liren Guan
Original assignee: Liren Guan
Priority date: 2003-09-23
Filing date: 2004-08-09
Publication date: 2005-04-28

Abstract

Impermeable body life suit in water comprises a hood, a cover, a waterproof garment with a zip, the hood hermetically tied in with the waterproof garment to protect the wearer; the cover mantles the hood or a float, that forming a chamber between the cover and the hood, a separator separates the chamber into a supplying air part and an exhausting air part; an aerophore is provided in the hood, said aerophore has a supplying valve and an exhausting valve, a supplying pipe connects the supplying valve to the supplying air part, an exhausting pipe connects the exhausting valve to the exhausting air part, that forming a respiration device provided with supplying unit and exhausting unit thereby. The means of the cover mantling the float can be using diving suit. Simultaneously, if the interior structure or interior stuffing of the cover possesses property of reflecting radar wave, that it can be used for searching and bailout by a radar in all-weather.

Description

TECHNICAL FIELD

The present invention relates to the field of life-saving, is an underwater life-saving device, and can be widely used in various waters, especially focusing on marine applications. ' Background technique

Of the various single-person lifesaving equipment currently on board, life jackets and lifebuoys are the most common. However, these two can only provide buoyancy and cannot provide other protection. People who stay in the water for a long time often cause injuries or death due to low temperature. The lower the water temperature, the faster the process. At present, the ship is also equipped with a cold-proof thermal insulation clothing. Although it has thermal insulation function, the head and face are exposed, and it is not watertight. Once a person is immersed in water, the body temperature will be difficult to maintain, and the irrigating and impact of the wind and waves on the nose of the population cannot be avoided. . A marine life jacket, such as a closed life jacket announced by the State Intellectual Property Office of China on March 25, 1992, with the Shen Qian number 912113200, which discloses a life jacket with a waterproof sealed zipper, an observation window and a breathing device However, it does not provide enough head protection, requires energy, and is not conducive to long-term use and storage. Nor does it have a complete breathing device that can separate air supply and exhaust, which prevents the launcher or offshore operator from performing smoothly. Breathing is not conducive to drifting in the water for a long time to be rescued and self-rescue, and it is difficult to ensure personal safety. Summary of the invention

The technical problem to be solved by the present invention is to provide an aquatic life jacket capable of sealingly protecting the whole body of the human body. The sealed aquatic life jacket completely isolates people from water, And it is protected from the low temperature injury caused by human immersion in water, and also protects the user's head and face from the direct attack of wind and waves; Allows users to breathe smoothly while floating on the water.

Another technical problem to be solved by the present invention is to provide a sealed aquatic life jacket equipped with a radar reflection device, which is conducive to the development of search and rescue work, and thereby improves the survival chance of a fallen person. '

In order to achieve the above object, the present invention provides a sealed aquatic life jacket, which includes a helmet, a cover, and a watertight suit, wherein the helmet and the watertight suit are combined into a watertight whole that can seal the entire body of the human body; Air-tight and air-tight supply and exhaust chambers; the helmet is provided with an air-supply valve and an exhaust vent with an exhaust function; The air breathing tube and the exhaust breathing tube form a breathing device with separate air supply and exhaust systems.

A further preferred solution of the present invention is that a mezzanine space is formed between the outer cover of the sealed aquatic life jacket and the helmet, and a separation band is provided in the mezzanine space to separate the air supply chamber and the exhaust chamber.

Another preferred solution of the present invention is: The sealed water life jacket further includes a floating body, and the outer cover is fastened to the floating body to form a sandwich space therebetween. A partition is provided in the sandwich space to separate Out of the air supply cavity and the exhaust cavity.

A still further preferred solution of the present invention is: a radar reflection device is provided in the outer cover. The radar reflection device refers to the principle of a radar corner reflector, which can selectively breathe, including a partition, a rib, a helmet, or a floating body, without affecting other functions. The components of the device have radar reflection performance; or the radar reflection material is arranged in the outer cover in combination with the functions and shapes of the above components.

By combining the helmet and the watertight suit in a watertight manner, the sealed aquatic life jacket of the present invention achieves protection of the user's body from cold and water, and also protects the user's head from the impact of sea waves and immersion in seawater. At the same time, a mezzanine space is formed through the combination of the outer cover and the helmet or the floating body, and the mezzanine space is separated from the air supply chamber and the exhaust chamber by a separation belt, and the air supply chamber and the exhaust chamber are airtight and watertight with each other. They are not connected to each other. The air supply snorkel and the exhaust snorkel are connected to the air supply chamber and the exhaust chamber respectively through the air supply breathing tube and the exhaust breathing tube in the helmet, so as to achieve independent air supply and exhaust systems, enabling marine personnel. Breathing is smoother and meets the breathing needs of users when they drift on the water for a long time, so that users can drift on the sea for a longer time, waiting for rescue or long-term offshore operations. The combination of the cover and the floating body also has diving performance. The invention also enables radar reflection performance of the components constituting the breathing device in the outer cover to be selectively provided in the outer cover so as to form a radar having a structure consistent with the characteristics of the radar angle reflector. Reflective device, this kind of radar reflecting device has simple structure and is combined with the components inside the cover, which saves space, reduces costs, and requires no energy. The use time is unlimited. Rescue personnel can use radar for all-weather search and rescue work, which overcomes The effects of the night make hope for rescuers even greater. BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a front view of a first embodiment of a sealed water life jacket of the present invention. FIG. 2 is a schematic cross-sectional structural diagram of a head according to the first embodiment. FIG. 3 is a schematic plan view of a head structure according to the first embodiment.

Figure 4 is a schematic cross-sectional view of a vent valve of a sealed water life jacket according to the present invention.

Fig. 5 is a front view of a second embodiment of the sealed water life jacket of the present invention. detailed description

FIG. 1 shows a sealed water life jacket according to a first embodiment of the present invention. The lower tube is called a life jacket. Including: helmet 1, outer cover 2 and watertight suit 3; the helmet 1 and watertight suit 3 are combined to form a watertight whole that can protect the whole body of the body in a sealed manner; the outer cover 2 is a circular shape having resistance to wind and wave impact and water pressure Rigid watertight housing with smooth outer sides to reduce drag.

Referring to FIG. 5, the helmet 1 is also a rigid watertight shell that is resistant to wind and wave impact and water pressure. It is worn on the user's head to cover the entire head to the neck, protecting the head, and watertight clothing 3 Tightly connected at the neck. The helmet 1 is provided with an openable and closable observation window 6 at a position corresponding to the eyes of the user. When necessary, the elastic card 32 can be pressed to open, and from here, breathe directly, look or contact, and call for help. When the observation window 6 is closed, the elastic card 32 is fastened and the watertight state is restored. The observation window 6 is made of transparent material and is suitable for use in various environments.

Referring to FIG. ² and FIG. 3, the outer cover 2 covers the outside of the helmet 1 and forms a sandwich space between the helmet 1 and the partition belt I ⁸ divides the air supply chamber 20 and the exhaust chamber 21 in the sandwich space. The partition belt I ⁸ itself is water-tight and air-tight, so the air supply chamber 20 and the exhaust chamber 21 are isolated from each other, so that the supply and exhaust are not confused with each other, and the chambers with the same function can communicate with each other. Air supply cavity

20 and the lower part of the exhaust cavity n, a vent valve ^{5 is} installed at the opening of the joint of the outer cover 2 and the helmet 1 to ensure that the mezzanine space exchanges with the outside air and prevent water from entering the mezzanine space Inside the air cavity. Watertight floating cavities 22 are separated on both sides of the vent valve 5 by a separation belt 18 to increase buoyancy and enhance watertightness. The upper edge of the watertight floating cavity 22 is higher than the upper edge of the vent valve 5 to ensure that water in the interlayer space can flow out of the vent valve 5. There are ribbed plates 19 between the partitions 18, and a plurality of ventilation and drainage holes are dug on the ribbed plates 19. In the event that water enters the mezzanine space, the speed of entry can be delayed. It can flow out naturally from the vent valve 5. In general, the rib 19 can filter the moisture in the air and play a role of connection, support and reinforcement between the outer cover 2 and the helmet 1 together with the partition 18.

There is an adjustable elastic washer 10 inside the helmet 1 for adjusting the head. The helmet 1 is provided with a breathing mask at the mouth and nose of the user and according to the contour of the face. 4. It covers the mouth and nose of the person and is protected by the helmet 1. An air supply system and an exhaust system are installed on it. In this embodiment, the air supply system and the exhaust system are installed on both sides of the breathing mask 4, respectively. The air supply system includes a one-way air supply valve 12, the air supply breathing tube 16 is led out from the one-way air supply valve 12, and passes through the helmet 1 into the upper part of the mezzanine space, and is connected to the air supply chamber 20; the exhaust system includes a one-way exhaust The air valve 13, which leads to the exhaust breathing tube 17 from the one-way exhaust valve 13, passes upward through the helmet 1 and enters the upper part of the mezzanine space, and is connected to the exhaust cavity 21. The air supply breathing tube 16 and the exhaust breathing tube 17 are: hose.

In this embodiment, opening protection devices 43 and 44 are provided on the top of the mezzanine space. These are two horizontal pipes that cross each other, and both of them have the same structure. After the breathing tubes 16, 17 in the helmet 1 pass through the helmet 1 and enter the top of the mezzanine space, they are respectively connected with the opening protection devices 43, 44 in the middle, and the protection device 43 connected with the air supply breathing tube 16 is on it. The opening protection devices 4 ³ and ⁴⁴ are formed into several branch pipes at their ends. The branch pipes of the opening protection device 43 enter the air supply chamber and connect the air supply chambers together. Similarly, the opening protection device 44 enters the exhaust pipe. Air cavity, connecting exhaust cavity together. The branch pipes respectively enter the corresponding air supply chamber 20 and exhaust chamber 21 and fold back downward to form a hook-shaped opening so that the opening is as close to the top as possible so that water cannot easily enter; in case water enters the nozzle, when the head recovers When standing upright, water can flow naturally according to the shape of the opening. Actually this situation does not happen because there is a vent valve .5 below. The middle portions of the opening protection devices 43 and 44 can be made swollen, and the mouthpieces of the breathing tubes 16 and 17 are connected downwards. A drainage branch pipe can also be provided at each of the expansion positions of the opening protection devices 43, 44 and inserted. In the corresponding air cavity, the waterproof effect is better.

The division of the supply and exhaust functions of each air chamber is controlled by the air valve connected to it, which is consistent with the supply and exhaust functions of the air chamber. Both the air supply chamber 20 and the exhaust chamber 21 have larger volumes. When a person inhales, first obtain air supply from the air supply chamber 20, and enter the breathing mask 4 through the opening protection device 43, the air supply breathing tube 16, and the one-way air supply valve 12, and the air supply chamber 20 can be accessed from the air supply valve 5 at any time. The air is obtained there; the air passes through the one-way exhaust valve 1 3, the exhaust breathing tube 17, the opening protection device 44, enters the exhaust chamber 21, and is discharged to the outside through the vent valve 5 to form a complete breathing device. . The supply and exhaust capacity of the present invention is greater than the actual demand, so that it can still meet the breathing needs when affected by wind and waves.

In the above-mentioned breathing system, the air supply breathing tube 16 and the exhaust breathing tube 17 on the one-way air supply frame 12 and the one-way air supply frame 13 both protrude upward, and the water in the breathing mask 4 cannot be discharged. Therefore, as an improvement to the first embodiment, a forward-extending exhaust hose (not shown) may be provided below the middle portion of the breathing mask 4 to pass through the helmet 1 and the hard tube directly through the helmet 1 (Figure (Not shown) connected, the hard pipe is provided with a one-way exhaust and drainage valve 15 which is always open to the outside, and is provided with a safety cover 45, which can be screwed at any time to stop using the one-way exhaust and drainage valve 15 to seal the hard pipe nozzle to protect internal. The one-way exhaust and drainage valve 15 can not only directly exhaust the air, It is also possible to drain the moisture liquid in the breathing mask 4.

As a further improvement to the first embodiment, when the exhaust and drainage valve 15 is used, the original one-way exhaust valve 13 may be dispensed with, and a part of gas may be leaked, so that the exhaust and drainage valve 15 cannot work normally. For this purpose, the one-way exhaust valve 13 can be designed as a rotatable type to become a multifunctional valve. Function switch 14 on the multifunction valve. When the function conversion handle 14 is rotated 180 degrees, the one-way exhaust valve 13 becomes an air supply valve, which is not only equivalent to closing the exhaust valve, but also strengthens the air supply effect, making all the original vent valves and The air chambers belong to the air supply system, which supplies air to the helmet 1 at the same time, and the function of the exhaust system is solely borne by the exhaust drain valve 15; when it rotates 90 degrees, it becomes a normally open valve. The air cavity 21 becomes an air storage cavity. This is because when the ventilation hole 5 is condensed or blocked, and the workpiece is not normal, as an emergency measure, it can still be used for breathing. In this way, the one-way exhaust valve 13 becomes a multi-function valve, and the functions of the original exhaust chamber 21 and the exhaust breathing tube 17 are also switched with its function conversion, which increases the user's choice opportunities. Conducive to adapting to a variety of different environments. '

The breathing mask 4 is provided with an adjustable elastic strap 11 to fasten the breathing mask 4 from the back of the brain. Try on helmet 1 before use, adjust the tightness of breathing mask 4 and adjustable pad 圏 10, and then wear the whole suit.

Looking again at FIG. 4, the vent valve 5 is composed of a shield 33, a float 34, a floating chamber 35, a lower vent hole 36, an upper vent hole 37, an upper tangent plane 38 and a bracket 39 thereof. The shield 33 itself is ventilated. The float 34 is located in the floating chamber 35. There is a vertical fixing rod 40 in the middle, which passes through the cross-shaped fixing hole 41 in the middle of the upper tangent bracket 39, and the bottom passes through the center of the shield 33. The floating chamber 35 moves up and down in the middle. Float 34 is A hollow closed floating body, the upper surface of which is an arc tangent plane. When the water enters from the shield 33, the float 34 floats up and is tangent to the lower vent hole 36, blocking the lower vent hole 36, so that ice cannot enter the interior, and the air is temporarily unable to circulate. When the water is removed, the ventilation function is restored. . The shield 33 and the floating chamber 35, the lower vent hole 36, the upper tangent plane bracket 39, and the upper tangent plane 38 are an integral part. When the impact of water is too large, all of this on the shield 33 together with the shield 33 They all move upward together, blocking the upper vent hole 37, completely preventing the entry of water. When exhausting, air passes through the upper vent hole 37, bypasses the upper tangent plane 38, enters from the gap between the upper tangent plane bracket 39 and enters the lower vent hole 36, and then passes through the gap between the float 34 and the floating chamber 35, through the protective The hood 33 is connected to the outside atmosphere; otherwise, it is reversed during air intake. In order to prevent the direct impact of wind and waves on the vent valve, the opening (not shown) of the cover 2 under the vent 5 can have various wave-proof designs. The upper vent hole 37 is located on the outer wall 42. This outer wall 42 may be a container made for the vent valve 5 or the outer cover 2 itself. The above-mentioned ventilating valve 5 is a ventilating valve having a double structure, and has a double-layer waterproof function, even if the function of one layer is lost, the other layer is not affected. If only the shield 33, the float 34, the floating chamber 35, and the lower vent hole 36 are used, a single-type vent valve can also be constructed.

Looking again at FIG. 1, the watertight suit 3 can protect a part below the user's head. It is made of a waterproof material and is completely watertight. There is only an opening at the chest and abdomen, and a watertight zipper 8 is provided on it. After this zipper is closed, the garment returns to a watertight state, forming a watertight whole that can protect the entire body of the human body, and isolates the human body from water. The watertight suit 3 is relatively loose and lightweight, and is fast and convenient to wear. It has a certain cold protection effect, but it pays attention to the waterproof effect and strength, and the cold protection mainly relies on people's dry clothes. Because people ’s daily clothing corresponds to the season and weather, and the water temperature is also related to the season and weather. Corresponding relationship, wear more when the weather is cold. Properly add clothes or other insulation materials before entering the water to prevent low temperature damage to people.

When the inside of the helmet 1 is adjusted, put on the watertight suit 3 and pull on the watertight zipper 8. At this time, the person enters the watertight state. A watertight waistband 9 is also provided on the watertight suit 3, and a length adjustment strap 24 is provided on the crotch. The length adjustment strap 24 can pull down the upper garment and the lower trouser legs. When the watertight suit is too long, It can be shortened by tightening it. In order to fit people of different heights, this life jacket should be provided with various models of different sizes. The watertight belt 9 has sufficient strength by itself to lift a person from here during lifesaving, and to fasten a life jacket in peacetime. The watertight suit 3 is provided with a buoyancy device 7 on the shoulder and chest, which can provide sufficient buoyancy, and is provided with an adjustable part that can adjust the buoyancy. The adjustable part is a container made of plastic. When the buoyancy is too large, it can be filled with water to offset the buoyancy; when the buoyancy is small, the water is poured out. There is also a weight bag 23 at the calf, which is filled with sand and gravel and other worthless objects to offset the excess buoyancy, so as to prevent the body from being exposed to the water too much and being exposed to the impact of wind and waves. It can be discarded if it is too small, and it is used in conjunction with the buoyancy device 7. A waterproof glove 26 and a cuff zipper 27 inside the cuff are provided at the cuff. The waterproof gloves 26 of the watertight suit 3 are made of rubber coated on the fabric, are thin and elastic, and can flexibly perform various actions. You can usually retract your hands into the sleeves and pull on the cuff zip 27 inside the sleeves to prevent your hands from being frozen. The length of the opening of the upper part of the sleeve at the shoulder and armpit allows the user to easily extend the arm into the sleeve or retract it again to control, adjust the air valve, or retract the arm to the chest to keep warm. The watertight suit 3 is also provided with a watertight bag 25 on the front chest, which can be filled with various spare items such as compressed biscuits, fresh water, whistle, reflectors, waterproof flashlights, etc. In addition, a police department can be set up in the watertight suit 3 Convenient bag for excretion when drifting in the water for too long, so the performance is more perfect.

Please refer to FIG. 5, which is a second embodiment of the sealed water life jacket of the present invention. In this second embodiment, the outer cover 2 and the helmet 1 are separated. At this time, the helmet 1 is exposed, and the outer cover 2 is fastened to a floating body 29 to form a more regular shape space in the interior. The partition 18 and the ribs 19 in the mezzanine space, like the first embodiment, the air supply chamber 20 and the exhaust chamber 21 are also isolated, and a vent valve 5 is also installed below. The floating body 29 is provided with a counterweight 30 to ensure that the floating body 29 has a good stability. The air supply breathing tube 16 and the exhaust breathing tube 17 are put out of the helmet and applied with a protective layer to form a pressure-resistant breathing tube 31. It passes through the center of the floating body 29 and enters the inside of the outer cover 1 to make the air supplying breathing tube inside it. 16 and the exhaust breathing tube 17 are respectively connected to the opening protection devices 43 and 44 at the top of the mezzanine space, and enter the corresponding air chambers to form a complete cover floating body 28. The pressure-resistant breathing tube 31 may be drawn from the upper part of the helmet 1, or may be drawn from the front or other parts of the helmet 1 according to the actual situation. The other structures are the same as those of the first embodiment. During use, the pressure-resistant breathing tube 31 and the water-tight belt 9 can be tightly connected together, so as to avoid excessive drag on the helmet 1 when being impacted by wind and waves. The second embodiment of the present invention has a certain diving performance because the cover floating body 28 is separated from the helmet 1. After adding a weight to the watertight suit 3, you can dive to a certain depth underwater. It can be used for underwater operations with small depth when accidents such as propeller entanglement occur in the ship. So equipped with it on the ship gives the crew an additional means of self-rescue.

In the present invention, a radar reflection device is also installed in the housing 2. Radar corner reflectors used in marine applications are angle reflectors made of metal materials whose planes are perpendicular to each other. They have the characteristic of reflecting electromagnetic waves in the original emission direction, which can greatly enhance the effect of radar detection. And in the outer cover 2, between the partition 18 and the partition 18, and between it and the rib 19, Many crossing angles are close to vertical or vertical, and there is still a lot of room for adjustment; and they are perpendicular to the surface of the helmet. These are consistent with some characteristics of the radar corner reflector. Therefore, according to the principle of the radar corner reflector, without prejudice to other functions, the partitions 18, ribs 19, helmets 1 or floating bodies 29 of the breathing device formed in the outer cover 2 are selected to have radar reflection performance. Its shape or position can also be adjusted; or the radar reflection material 46 is arranged in the outer cover 2 and combined with the functions and shapes of the above-mentioned components, the combination of them becomes a radar reflection device. It is a radar reflection device that does not require energy and is organically integrated with the breathing device. It has some functions of a radar corner reflector and can be embodied by different manufacturing methods and forms. In the second embodiment, since there is no limitation of the helmet 1, the radar reflection device can be made more perfect.

The helmet 1, the outer cover 2 and the vent valve 5 in the present invention can be made of plastic, that is, light, strong, and easy to form.

The sealed aquatic life jacket of the present invention is made into internationally prescribed colors to facilitate identification. The sealed aquatic life jacket of the present invention may have various structural forms, and the above schematic diagrams are only two of them. The outer cover 1 in FIG. 2 covers almost all parts other than the face of the helmet 1, so that the structural strength is strong, the breathing device is effective, and the connection with the watertight garment 3 is also good; however, it can also be made to cover only a part. The air supply chamber 20 and the exhaust chamber 21 in FIG. 3 may also be made to have a large air supply chamber, a small exhaust chamber, or other types; and their numbers may be different. A vent valve 5 can be installed at the lower part of each air cavity; a plurality of vent valves can also be installed to enhance the ventilation effect; in addition, the air supply valve 12 can also be made into a multifunctional switchable gas cylinder. These changes in the shape of the structure do not exceed the technical characteristics of the life jacket, and are still in the present invention. Within the scope of protection.

The above is only a preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principles of the present invention, several improvements and retouches can be made. These improvements and retouches should also be made. It is regarded as the protection scope of the present invention.

Claims

Rights request

1. A sealed water life jacket comprising a watertight suit (3), characterized in that the sealed water life jacket further comprises a helmet (1) and an outer cover (2), wherein the helmet (1) and the watertight suit (3) Combined into a water-tight whole that can protect the whole body of the body; the outer cover (2) is provided with a water-tight and air-tight air supply chamber (20) and an exhaust chamber (21); the helmet (1) is provided with The air supply valve (12) and the air discharge valve (13) with an exhaust function, and the air supply valve (12) and the air discharge valve (13) are connected to the air supply chamber (20) and the air discharge chamber (21), respectively. The air supply breathing tube (16) and the exhaust breathing tube (17) form a breathing device with separate air supply and exhaust systems.

2. The sealed aquatic life jacket according to claim 1, characterized in that the outer cover (2) is provided with a radar reflection device.

3. The sealed aquatic life jacket according to claim 2, characterized in that: a sandwich space is formed between the outer cover (2) and the helmet (1), and a partition band (18) is provided in the sandwich space to separate out The air supply chamber (20) and the exhaust chamber (21).

4. The sealed aquatic life jacket according to claim 2, further comprising a floating body (29), the outer cover ( ² ) being fastened to the floating body U9), forming a sandwich space therebetween. A partition belt (18) is provided in the mezzanine space to separate the air supply chamber (2G) and the exhaust chamber (21).

5. The sealed aquatic life jacket according to claim 3 or 4, characterized in that: the partition (18) itself is watertight and airtight, so the air supply chamber ( ²⁰ ) and the exhaust chamber (2) are isolated from each other, and the interior The air is not confused with each other, and the air cavities with the same function can communicate.

6. The sealed aquatic life jacket according to claim 5, wherein: A plurality of ribs (19) are arranged between the adjacent partitions (18), and the ribs (19) are provided with a plurality of ventilation and drainage holes.

7. The sealed aquatic life jacket according to claim 6, characterized in that: the radar reflection device is based on the principle of a radar angle reflector, and selectively includes a separation belt without affecting other functions. (18), a rib (19) and a helmet (1) or a floating body (29), the components in the outer cover (2) have radar reflection performance; or the radar reflective material (46) is set on the outer cover in combination with the function and shape of the above components In (2), the combination of them forms a radar reflection device.

8. The sealed aquatic life jacket according to claim 7, characterized in that: according to the requirements of the radar reflection device, the shape and position of the components inside the outer cover (2) can be adjusted accordingly; the partition (18) Corresponding adjustments can also be made between the angles between and between the divider (18) and the ribs (19).

9. The sealed aquatic life jacket according to any one of claims 1 to 4, characterized in that: a vent valve (at a lower opening of the air supply chamber (20) and the exhaust chamber (21) is installed 5), the upper part is provided with opening protection devices (43) and (44) connected to each of them.

The sealed aquatic life jacket according to claim 9, characterized in that the ventilation valve (5) is composed of a shield (33), a float (34), a floating chamber (35), a lower vent hole ( ³⁾ 6) A single-type ventilation valve configured, wherein the float (34) can float up and down in the floating chamber (35) so as to be tangentially matched with the lower ventilation hole (36).

11. The sealed aquatic life jacket according to claim 10, characterized in that the ventilation valve (5) further comprises an upper tangent plane (38) and its bracket (39) and an upper vent hole (37), wherein Upper tangent plane (38) and bracket (39) with guard (33), floating chamber (35) and lower channel The air hole (36) is a whole, and the whole can float up and down, so that the upper tangent plane (38) and the upper air hole (37) can be tangently matched.

12. The sealed aquatic life jacket according to claim 9, characterized in that the opening protection devices (43), (44) are located in the upper part of the mezzanine space, and are respectively connected with the air-supply breathing tube (16) and The exhaust breathing tube (17) is connected, and the end portions of the opening protection devices (43), (44) are formed into several branch tubes, and the branch tubes enter the phase corresponding to the air supply breathing tube (16) and the exhaust breathing tube (17). The corresponding air supply chamber '(20) and exhaust chamber (21) are folded back into a hook-shaped opening.

13. The sealed aquatic life jacket according to claim 12, characterized in that: the middle portions of the opening protection devices (43), (44) are made swollen, an air supply breathing tube (16) and an exhaust breathing tube ( 17), the nozzles of the opening protection devices are connected to the pipes downwardly, and one of the pipes arranged downwards in each of the opening protection devices (43) and (44) enters into the air chambers connected to them.

14. The sealed aquatic life jacket according to any one of claims 1 to 4, characterized in that: the helmet (1) is provided with a breathing mask (4), the air supply valve (12) and an exhaust valve. An air valve (13) is provided on the breathing mask (4), and the air supply valve (12) is a one-way air supply valve.

15. The sealed aquatic life jacket according to claim 14, characterized in that: an exhaust hose is provided above and below the breathing mask (4), and the helmet (1) is provided in phase with the exhaust hose The hard pipe is connected with a one-way exhaust and drain valve (15) that is always open to the outside, and a safety cover (45) that can seal the hard pipe nozzle.

16. The sealed aquatic life jacket according to claim 15, wherein: The exhaust valve (13) of the exhaust function is provided with a function conversion handle (14) for controlling the exhaust width (13). When the function conversion handle (14) rotates 180 degrees, the exhaust valve (13) is discharged by the exhaust The air is converted into air supply, and the functions of the exhaust chamber (21) and the exhaust breathing tube (17) connected to it are also switched as its function is switched. At this time, the exhaust is drained by the exhaust water (15 ) Alone; when the function conversion handle (14) rotates 90 degrees, the exhaust valve (13) is a normally open valve, and the corresponding exhaust chamber (21) becomes an air storage chamber.

17. The sealed aquatic life jacket according to any one of claims 1 to 4, characterized in that: the helmet (1) covers the user's head to the entire neck, and it includes one located at the user's eyes The observation window (6) that can be opened and closed is in a watertight state when the observation window (6) is closed.

18. The sealed aquatic life jacket according to claim 1 or 2 or 4, characterized in that: the air-supply breathing tube (16) and the exhaust breathing tube (17) are applied with a protective layer after passing through the helmet (1). A pressure-resistant breathing tube is provided with a counterweight (30) on the floating body (29).

19. The sealed aquatic life jacket according to any one of claims 1 to 4, characterized in that the watertight suit (3) is provided with a watertight zipper (8), a buoyancy device (7), and a weight bag ( ² 3), length adjustment belt (M), watertight bag (25), waterproof gloves (26), and cuff zipper (27) on the wrist that opens and closes inside the cuff; the sleeve allows the user to put on this After the immersion suit, you can still retract your arms from your sleeves to your chest or extend them in.