A quicklime heating life jacket and its use method

Abstract

The invention discloses a quicklime heating life jacket and a method for using the same. The life jacket comprises a life jacket body, wherein a buoyancy device and a heating device are sequentially arranged inside the life jacket body from outside to inside, a water inlet button is arranged at the lower part of the outer side of the life jacket body, a reflector is arranged at the two shoulders, and a survival whistle is hung at the chest position, the heating device comprises an inner wall and an outer wall, the outer wall is fitted with the buoyancy device, the inner wall is in contact with the human body, a bag of quicklime and air are arranged inside the heating device, a water inlet is arranged below the front of the outer wall, the water inlet is connected to the water inlet button through a water inlet channel, a waterproof protective film tightly wraps the water inlet button, and a pressure valve is arranged above the back of the outer wall. The quicklime heating life jacket of the invention has low economic cost, is easy to wear, and is simple to operate, and can be mass-produced and equipped in a short period of time, while ensuring that stable and continuous heat is provided for a long time for people who accidentally fall into the water, so that the people who fall into the water can greatly increase their survival time in low-temperature water while waiting for rescue, thereby increasing the survival rate.

Description

Technical Field

[0001] The invention belongs to the technical field of life jackets, and in particular relates to a quicklime heating life jacket and a use method thereof. Background Art

[0002] The risk of shipwreck cannot be avoided when sailing on the water. The Titanic hit an iceberg and sank. In recent years, there have been frequent shipwrecks, such as the Eastern Star. Studies have shown that a person can survive less than 15 minutes in 0°C seawater. If a shipwreck occurs at night or in the open sea and rescue ships cannot arrive quickly, the water temperature is low in certain seasons at higher latitudes. Even if the drowning person wears a life jacket to avoid drowning, he or she will still die from the low temperature effect of the water.

[0003] Therefore, designing a life jacket with a heating function will effectively prolong the time that the drowning person has to wait for rescue, thereby increasing the probability of survival. In the prior art, thermal life jackets (patent number: 201420629866.4), luminous automatic thermal life jackets (patent number: 201720183487.0), and automatic heating sweater-style life jackets (201910139354.7) all have heating functions, but they have the disadvantages of complex operation, high cost, and high uncertainty. Summary of the invention

[0004] The object of the present invention is to provide a quicklime heating life jacket and a method of using the same, so as to solve the problems of complicated operation, high cost and high uncertainty in the existing heating life jackets.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A quicklime heating life jacket of the present invention comprises a life jacket main body, wherein a buoyancy device and a heating device are sequentially arranged inside the life jacket main body from the outside to the inside, reflective plates are arranged at the two shoulders on the outside of the life jacket main body, specifically a red fabric made of nylon or chloroprene rubber is adopted, the buoyancy device is composed of a plurality of buoyancy sheets, and an EVA foam material is adopted, and the buoyancy standard is 12kg / 24 hours for adults and 9.5kg / 24 hours for children, and a survival whistle is arranged at the chest outside the life jacket main body. This section of content is the configuration of a conventional life jacket, but considering that the total mass of the quicklime and the heating device is 4.5 kg, the buoyancy standard of the buoyancy device is improved. The heating device is located below the cuff of the life jacket body; the heating device includes an inner wall made of silica gel or PVC with a thickness of 0.5 cm and an outer wall with a thickness of 1 cm, the inner wall and the outer wall constitute an easily deformable closed system, and the closed system is provided with bagged quicklime and a small amount of air, the bagged quicklime is fixed on the inner side of the outer wall in sequence at a set interval of 4 to 6 cm and is higher than the set height of the bottom of the outer wall, and the thickness is compressed within 2 cm when no water enters, and the space occupied is small; the cross-sections of the inner wall and the outer wall are both elliptical, the outer wall is tightly fitted with the buoyancy device, the inner wall is in direct contact with the human body, and the heating device will not fall off when a reaction occurs inside;

[0007] A water inlet is provided above the front side of the outer wall, and a water inlet button for controlling the closing and opening of the water inlet is provided below the cuff on the outside of the life jacket body. The water inlet is connected to the water inlet button via a water inlet channel, and the water inlet button is wrapped with a waterproof protective film. A pressure valve is provided above the back side of the outer wall.

[0008] Before water entered, the circumferences of the outer wall and inner wall were 133-139 cm and 106-110 cm respectively, and the height was 24-26 cm; after water entered, the volume of the heating device expanded, the corresponding water level height was 19-21 cm, the thickness was 7-8 cm, and seawater occupied 75%-85% of its space.

[0009] The water inlet button is located 5 cm below the outer cuff of the life jacket body and to the right of the front center; the water inlet is located at a height of 20 cm set by the heating device; the water inlet channel has a diameter of 4 cm, one end of which is directly connected to the heating device without passing through the buoyancy device, and the other end is connected to the water inlet button; the water inlet is in a closed state. After tearing off the waterproof protective film, rotate the water inlet button clockwise to open the water inlet, and rotate the water inlet button counterclockwise to close the water inlet. Under normal circumstances, the waterproof protective film tightly wraps the water inlet button to prevent dangerous misoperation caused by the heating device that should not be activated.

[0010] After the water inlet is opened, seawater rapidly flows into the heating device through the water inlet channel under pressure, and reacts violently with the bagged quicklime, raising the temperature of the seawater inside the heating device to 75-80°C but not boiling.

[0011] The heating device is made of silica gel or PVC, so that the maximum temperature felt by the drowning person is 45-55° C. Since the outer wall is 0.5 cm thicker than the inner wall, when the bag of quicklime attached to the outer wall reacts violently, the outer wall has stronger high temperature resistance and damage resistance.

[0012] The pressure valve is a one-way valve that can only flow out but not in. The one-way valve is located in the middle of the back of the heating device and is set at a height of 20 cm. It does not pass through the buoyancy device but passes through the back of the life jacket body, so that the air expanded by heat can be discharged without burning the person who falls into the water. At the same time, it prevents the heating device from being damaged due to rapid expansion of volume and the buoyancy device from being damaged by high-temperature steam.

[0013] The method for using the quicklime heating life jacket comprises the following steps:

[0014] Step 1: When someone falls into the water and the surrounding seawater temperature is above 25°C, do not operate the water inlet button and wait patiently for rescue; when the seawater temperature is lower than 25°C, quickly tear off the waterproof protective film and rotate the water inlet button clockwise;

[0015] Step 2: Under the action of seawater pressure, 10-14 kg of seawater will quickly flow into and fill the heating device. The volume of the heating device is filled with 75%-85% of seawater. At this time, the water inlet button is rotated counterclockwise so that seawater no longer flows in.

[0016] Step 3: The bagged quicklime contained in the heating device reacts chemically with water, releasing heat to quickly raise the temperature of the seawater to 75-80°C. When the air pressure in the heating device is too high, the gas will be discharged through the pressure valve, so that people can feel a maximum temperature of 45-55°C, thereby achieving safe heat within 0.5-4 hours.

[0017] While absorbing heat, the person who falls into the water should cross his hands and hold the front part of the life jacket, breathe more relaxedly and reduce unnecessary heat loss.

[0018] When storing the quicklime heating life jacket on a daily basis, it needs to be placed in a dry and enclosed space and strictly prevent moisture and humidity.

[0019] The technical effects and advantages of the present invention are as follows: the quicklime heating life jacket has low economic cost, is easy to wear, and is simple to operate. It can be mass-produced and equipped in a short period of time, and at the same time ensures that stable and continuous heat is provided for people who accidentally fall into the water for a long time, so that the people who fall into the water can greatly increase their survival time in low-temperature water while waiting for rescue, thereby improving the survival rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the structure of the present invention (a in the figure is the cuff line);

[0021] Figure 2 It is a front view of the heating device of the present invention;

[0022] Figure 3 It is a rear view of the heating device of the present invention.

[0023] In the figure: 1-life jacket body, 2-buoyancy device, 3-heating device, 4-water inlet button, 5-bag of quicklime, 6-inner wall, 7-outer wall, 8-water inlet, 9-pressure valve, 10-reflecting plate, 11-life whistle, 12-waterproof protective film, 13-water inlet channel. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See also Figure 1-Figure 3 The present invention provides a quicklime heating life jacket, comprising a life jacket body 1, wherein the life jacket body 1 is provided with a reflector 10 at both shoulders, and a life whistle 11 is provided at the chest of the life jacket body 1. The interior of the life jacket body 1 is provided with a buoyancy device 2 and a heating device 3 from the outside to the inside, and the heating device 3 includes an inner wall 6 and an outer wall 7. The cross-sections of the inner wall 6 and the outer wall 7 are both elliptical arcs, the outer wall 7 is closely fitted with the buoyancy device 2, and the inner wall 6 is in direct contact with the human body. The interior of the heating device 3 is provided with bagged quicklime 5 and a small amount of air, and the bagged quicklime 5 is fixed on the inner side of the outer wall 7 at a certain interval and is 4 cm higher than the bottom of the heating device 3. A water inlet button 4 is provided at the lower part of the outer side of the life jacket body 1, and a water inlet 8 is provided above the front of the outer wall 7, and the water inlet 8 is connected to the water inlet button 4 by means of a water inlet channel 13, and a pressure valve 9 is provided above the back of the outer wall 7.

[0026] The circumference of the heating device 3 is designed to be close to the chest circumference of an adult, the circumferences of the outer wall 7 and the inner wall 6 are 136±3cm and 108±2cm respectively, and the height is 25±1cm. The heating device 3 is relatively thin before water is filled in. After water is filled in, the water level of the heating device 3 is 20±1cm, the thickness is 7.5±0.5cm, and seawater occupies 80%±5% of its volume.

[0027] The water inlet button 4 controls the closing and opening of the water inlet 8. Under normal circumstances, it is tightly wrapped by the waterproof protective film 12, and the water inlet 8 is in a closed state. After tearing off the waterproof protective film 12, the water inlet button 4 is rotated clockwise to open the water inlet 8, and then the water inlet button 4 is rotated counterclockwise to close the water inlet 8. After the water inlet 8 is opened, under the action of pressure, about 12L of seawater quickly flows into the heating device 3 and reacts violently with the 4kg of bagged quicklime 5, raising the seawater inside the heating device 3 to 75~80℃ without boiling. The material of the heating device 3 is silica gel or PVC, so that the maximum perceptible temperature range of the drowning person is 45~55℃. The pressure valve 9 is a one-way valve that can only output but not input, so that the air expanded by heat can be discharged.

[0028] The method for using the quicklime heating life jacket of the present invention comprises the following steps:

[0029] Step 1: When someone falls into the water and the surrounding seawater temperature is above 25°C, do not operate the water inlet button (4) and wait patiently for rescue; when the seawater temperature is below 25°C, quickly tear off the waterproof protective film (12) and rotate the water inlet button (4) clockwise;

[0030] Step 2: Under the action of the seawater pressure, 10 to 14 kg of seawater will quickly flow into and fill the heating device (3). The volume of the heating device (3) is filled with 75% to 85% of the seawater. At this time, the water inlet button (4) is rotated counterclockwise so that the seawater no longer flows in.

[0031] Step 3: The bagged quicklime (5) contained in the heating device (3) produces a chemical reaction when in contact with water, releasing heat to rapidly raise the temperature of the seawater to 75-80°C. When the air pressure in the heating device (3) is too high, the gas will be discharged through the pressure valve (9), so that people can feel a maximum temperature of 45-55°C, thereby achieving safe heat within 0.5-4 hours.

[0032] In the process of receiving heat, the person who falls into the water crosses his hands and hugs the front part of the life jacket body (1), relaxes and breathes, and reduces unnecessary heat loss.

[0033] When storing the quicklime heating life jacket on a daily basis, it needs to be placed in a dry and enclosed space and strictly prevent moisture and humidity.

[0034] According to the "Relationship between Survival Time and Water Temperature of a Person Falling into Water" experiment conducted in the United States and Germany, the survival time of a person falling into water at 25 and 20℃ is 24 and 14 hours respectively. Therefore, we take 20℃ as the reference temperature and take the time from the start of the reaction of the heating device 3 to the internal water temperature dropping to 20℃ as the continuous heating time.

[0035]

[0036] In the experiment, the heating device 3 was placed in an experimental pool with water temperatures of 0, 2.5, 5, 15, and 20°C, and the water inlet button 4 was turned on to allow a large amount of water to enter, and then the water inlet channel was closed. The time taken for the water temperature inside the heating device 3 to drop to 20°C was then recorded, which is called the continuous heating time. The experimental record results and comparison table are as follows:

[0037]

[0038] Columns 1 to 4 represent the water temperature, the survival time of the corresponding drowning person, the continuous heating time of the heating device 3, and the total time after extension, respectively.

[0039] It can be seen that the heating life jacket can provide continuous heating time of 0.5-4 hours for the drowning person. Under the water temperature of 0-2.5℃, the survival time of the drowning person is extended by 1-2 times, and the survival probability is improved if the drowning person persists for more than 45 minutes in cold water; under the water temperature of 5-10℃, the survival time of the drowning person is extended by 48-90 minutes, and the drowning person can persist for 2 hours to 4.5 hours, and the survival probability is relatively high; especially under the water temperature of 10-20℃, due to the longer survival time of the drowning person, plus the continuous heating time of at least 1.5 hours, his survival probability is extremely high.

[0040] Working principle: When the quicklime heating life jacket is used, after tearing off the waterproof protective film 12, first rotate the water inlet button 4 clockwise to allow a large amount of seawater to enter the heating device 3 through the water inlet 8, and then rotate the water inlet button 4 counterclockwise to prevent the seawater from continuing to enter. The seawater and the bagged quicklime 5 undergo a violent chemical reaction to heat the seawater. The heated seawater continuously transfers heat to the human body through the inner wall 6, and the excess heat generated during heating is discharged from the pressure valve 9.

[0041] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A quicklime heating life jacket, comprising a life jacket body (1), characterized in that: The interior of the life jacket body (1) is provided with a buoyancy device (2) and a heating device (3) in sequence from the outside to the inside, and the heating device (3) is located below the cuff of the life jacket body (1); Reflection plates (10) are installed at the two shoulders of the outer side of the life jacket body (1); the buoyancy device (2) is composed of a plurality of buoyancy sheets, and the buoyancy standard is 12 kg / 24 hours for adults and 9.5 kg / 24 hours for children; a survival whistle (11) is provided at the chest of the outer side of the life jacket body (1); The heating device (3) comprises an inner wall (6) with a thickness of 0.5 cm and an outer wall (7) with a thickness of 1 cm. The inner wall (6) and the outer wall (7) constitute a closed system that is easily deformed. Bags of quicklime (5) and a set amount of air are arranged in the closed system. The bags of quicklime (5) are fixed on the inner side of the outer wall (7) at intervals of 4 to 6 cm in sequence and are higher than a set height of the bottom of the outer wall (7). When no water enters, the thickness is compressed to less than 2 cm. The cross-sections of the inner wall (6) and the outer wall (7) are both elliptical. The outer wall (7) is tightly fitted with the buoyancy device (2). The inner wall (6) is in direct contact with the human body. When a reaction occurs inside, the heating device (3) will not fall off. A water inlet (8) is provided above the front surface of the outer wall (7); a water inlet button (4) for controlling the closing and opening of the water inlet (8) is provided below the cuff on the outside of the life jacket body (1); the water inlet (8) is connected to the water inlet button (4) via a water inlet channel (13); the water inlet button (4) is wrapped with a waterproof protective film (12); and a pressure valve (9) is provided above the back surface of the outer wall (7); Before water enters, the perimeters of the outer wall (7) and the inner wall (6) are 133 to 139 centimeters and 106 to 110 centimeters respectively, and the height is 24 to 26 centimeters; after water enters, the volume of the heating device (3) expands, the corresponding water level height is 19 to 21 centimeters, the thickness is 7 to 8 centimeters, and the seawater occupies 75% to 85% of its space; The heating device (3) is made of silica gel or PVC, so that the person who falls into the water can sense a maximum temperature of 45 to 55°C; The pressure valve (9) is a one-way valve that can only flow out but not in. The one-way valve is located in the middle of the back of the heating device (3) and is set at a height of 20 cm. It does not pass through the buoyancy device (2) but passes through the back of the life jacket body (1), so that the air expanded by heat can be discharged without burning the person who falls into the water. At the same time, it prevents the heating device (3) from being damaged due to rapid volume expansion and high-temperature steam from damaging the buoyancy device (2).

2. The quicklime heating life jacket according to claim 1, characterized in that: The water inlet button (4) is located 5 cm below the outer cuff of the life jacket body (1) and to the right of the front center; the water inlet (8) is located at a height of 20 cm set above the heating device (3); the water inlet channel (13) has a diameter of 4 cm, one end of which does not pass through the buoyancy device (2) but is directly connected to the heating device (3), and the other end is connected to the water inlet button (4); the water inlet (8) is in a closed state, and after the waterproof protective film (12) is torn off, the water inlet button (4) is rotated clockwise to open the water inlet (8), and the water inlet button (4) is rotated counterclockwise to close the water inlet (8).

3. The quicklime heating life jacket according to claim 2, characterized in that: After the water inlet (8) is opened, under the action of pressure, seawater quickly flows into the heating device (3) through the water inlet channel (13) and undergoes a violent chemical reaction with the bagged quicklime (5), raising the temperature of the seawater inside the heating device (3) to 75-80°C.

4. The method for using the quicklime heating life jacket according to any one of claims 1 to 3, characterized in that: The following steps are involved: Step 1: When someone falls into the water and the surrounding seawater temperature is above 25°C, do not operate the water inlet button (4) and wait patiently for rescue; when the seawater temperature is below 25°C, quickly tear off the waterproof protective film (12) and rotate the water inlet button (4) clockwise; Step 2: Under the action of the seawater pressure, 10-14 kg of seawater will quickly flow into and fill the heating device (3), and the volume of the heating device (3) is filled with 75%-85% of the seawater. At this time, the water inlet button (4) is rotated counterclockwise so that the seawater no longer flows in; Step 3: The bagged quicklime (5) contained in the heating device (3) produces a chemical reaction when in contact with water, releasing heat to rapidly raise the temperature of the seawater to 75-80°C. When the air pressure in the heating device (3) is too high, the gas will be discharged through the pressure valve (9), so that people can feel a maximum temperature of 45-55°C, thereby achieving safe heat acquisition within 0.5-4 hours.

5. The method for using the quicklime heating life jacket according to claim 4, characterized in that: In the process of receiving heat, the drowning person crosses his hands and hugs the front of the life jacket body (1), relaxes and breathes, and reduces unnecessary heat loss.

6. The method for using the quicklime heating life jacket according to claim 4, characterized in that: When storing the quicklime heating life jacket on a daily basis, it needs to be placed in a dry and enclosed space and strictly prevent moisture and humidity.

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