Folding life raft special for fire fighting

Abstract

The invention relates to the technical field of fire protection life rafts, in particular to a special folding type life raft for fire protection, which comprises a life raft main body, L-shaped reaction tubes are fixedly connected to four corners in the life raft main body, and one side of the outer surface of each of the four L-shaped reaction tubes is fixedly communicated with an air inlet hose; one end of each of the four air inlet hoses fixedly communicates with the life raft main body, the inner wall of the feeding end of each L-shaped reaction tube is fixedly connected with a threaded cylinder, and a material storage barrel is arranged in the threaded cylinder. According to the invention, the sealing cover is screwed, water is added into the L-shaped reaction tubes, the sealing cover is screwed down again after adding, and the other L-shaped reaction tubes are operated in the same way; when water is in contact with a mixture of citric acid and sodium bicarbonate placed in the storage barrel, the water reacts to generate carbon dioxide, and the carbon dioxide enters the life raft main body from the air inlet hose to inflate the life raft main body, so that queuing inflation of the life raft is avoided, rescue force can be quickly expanded, and trapped people can be timely rescued.

Description

Technical Field

[0001] This invention relates to the field of fire-fighting life raft technology, specifically a foldable life raft for firefighting. Background Technology

[0002] Firefighting life rafts are high-performance emergency rescue equipment designed for disaster sites such as fires and floods. They are mainly used to quickly transfer trapped people, cross obstacles, or provide temporary shelter platforms. Compared with ordinary life rafts, they place greater emphasis on fire resistance, rapid deployment, and adaptability to multiple environments.

[0003] Currently, fire rafts on the market are designed for easy folding and storage. They typically have the gas inside vented. When in use, a high-pressure gas cylinder is used. After the valve is opened, the liquid carbon dioxide inside the high-pressure gas cylinder instantly vaporizes and expands, filling the raft. Firefighters then use the raft for rescue operations.

[0004] When conducting rescue operations at emergency rescue sites such as fires and floods, multiple life rafts are usually required. Therefore, high-pressure gas cylinders need to inflate multiple life rafts. However, the gas flow rate of high-pressure gas cylinders is limited, and they can only inflate 1 to 2 life rafts at the same time. This makes it impossible to inflate multiple life rafts simultaneously, causing subsequent life rafts to have to wait in line. Since the golden rescue time in emergency rescue is extremely short, waiting for inflating life rafts prevents trapped people from being rescued in time and hinders the rapid deployment of rescue forces, making life rafts inconvenient to use. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a fire-fighting foldable life raft with the advantage that each life raft can inflate itself, eliminating the need for queuing for inflation, enabling rescue forces to deploy quickly, greatly improving the efficiency of rescue operations during the golden rescue time, and ensuring that trapped personnel are rescued in a timely manner.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a fire-fighting folding life raft, comprising a life raft body, with L-shaped reaction tubes fixedly connected to the four corners of the life raft body, and air inlet hoses fixedly connected to one side of the outer surface of the four L-shaped reaction tubes, with one end of each air inlet hose fixedly connected to the life raft body, a threaded cylinder fixedly connected to the inner wall of the feed end of the L-shaped reaction tube, a storage tank provided inside the threaded cylinder, a through hole opened through the outer surface of the storage tank, the storage tank extending into the L-shaped reaction tube, and a mixture of citric acid and sodium bicarbonate placed inside the storage tank, with a sealing cap threadedly connected to the outer surface of the threaded cylinder.

[0007] Preferably, the bottom of the L-shaped reaction tube is fixedly connected to a ramp.

[0008] Preferably, the inner walls of the inlet of the storage hopper are symmetrically and fixedly connected with extension ears on both sides, the center of the sealing cover is rotatably connected with a rotating disk, the lower ends of the rotating disk are symmetrically and fixedly connected with locking blocks, the extension ears are slidably connected in the locking blocks, the upper center of the rotating disk is fixedly connected with a rotating rod, the rotating rod extends into the sealing cover, and one end of the rotating rod is fixedly connected with a rotating cap.

[0009] Preferably, a sealing plate is fixedly connected to the lower end of the rotating cap, a sealing ring is fixedly connected to the lower end of the sealing plate, and a rotating groove is provided at the upper end of the sealing cover, with the sealing ring inside the rotating groove.

[0010] Preferably, a sealing box is fixedly connected to the outer surface of the air intake hose, and a cavity is opened inside the sealing box. A toothed plate is slidably connected to the inner wall of the cavity, and a toothed plate is fixedly connected to one side of the inner wall of the cavity. The air intake hose is located between the toothed plate and the toothed plate.

[0011] Preferably, a threaded hole is provided on one side of the sealing box, and a screw is threadedly connected to the inner wall of the threaded hole. One end of the screw is rotatably connected to one side of the rack plate.

[0012] Preferably, a protective layer is fixedly connected to the outer surface of the life raft body, and a connecting block is fixedly connected to one side of the protective layer.

[0013] Preferably, handles are fixedly connected to the four corners of the upper end of the life raft body, and the four handles are distributed in a rectangular array.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention opens the inlet of the L-shaped reaction tube by unscrewing the sealing cap, adds water into the L-shaped reaction tube, and then tightens the sealing cap again. The other L-shaped reaction tubes are operated in the same way. When the water comes into contact with the citric acid and sodium bicarbonate mixture placed in the storage tank, a reaction occurs to produce carbon dioxide. The carbon dioxide enters the life raft body through the air inlet hose, thus inflating the life raft. This structure is simple and easy to operate, avoiding the need for life rafts to be inflated in a queue, allowing rescue forces to deploy quickly and improving the timely rescue of trapped personnel.

[0015] 2. This invention, through the structural design of a rotating cap, an extended lug, and a locking block, allows the operator to rotate the rotating cap after water is added to the L-shaped reaction tube. The rotating disc rotates within the sealed cover, and because the extended lug is within the locking block, the storage tank rotates together with the rotating disc, causing the citric acid and sodium bicarbonate mixture in the storage tank to come into rapid contact with the water, thus improving the reaction efficiency. This allows for the rapid generation of carbon dioxide to inflate the main body of the life raft, thereby increasing the inflation speed of the life raft.

[0016] 3. This invention utilizes a structural design of a sealing box, a screw, a rack plate 1, and a rack plate 2. Rotating the screw moves it along the threaded hole in the sealing box, pushing rack plate 1 to slide within the box's cavity. This causes rack plate 2 to approach rack plate 1. When the teeth on rack plate 1 engage with the grooves on rack plate 2, the air inlet hose is compressed and sealed, preventing gas from the life raft body from entering the L-shaped reaction tube. Simultaneously, the sealing cap seals the inlet of the L-shaped reaction tube. This combined structure achieves a double seal, preventing air leakage during use. Attached Figure Description

[0017] Figure 1 This is a first-view structural schematic diagram of the device of the present invention.

[0018] Figure 2 This is a second-view structural schematic diagram of the device of the present invention.

[0019] Figure 3 This is a schematic diagram showing the connection relationship between the L-shaped reaction tube, the air inlet hose, the sealing cap, and the sealing box in the device of the present invention.

[0020] Figure 4 This is a schematic cross-sectional view of the L-shaped reaction tube in the device of the present invention.

[0021] Figure 5 This is a schematic diagram showing the connection relationship between the storage tank, the sealing cover, and the rotating disk in the device of the present invention.

[0022] Figure 6 This is a cross-sectional structural diagram of the sealing cap in the device of the present invention.

[0023] Figure 7 This is a cross-sectional structural diagram of the sealing box in the device of the present invention.

[0024] In the diagram: 1. Life raft body; 11. Handle; 12. Connecting block; 13. Protective layer; 2. L-shaped reaction tube; 21. Air inlet hose; 22. Sealing cap; 23. Ramp; 24. Storage tank; 25. Threaded cylinder; 26. Through hole; 3. Rotating cap; 31. Extension lug; 32. Rotating disc; 33. Locking block; 34. Sealing plate; 35. Sealing ring; 4. Sealing box; 41. Screw; 42. Rack plate one; 43. Rack plate two. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Example 1 Please see Figures 1 to 4 This invention provides a first embodiment of a technical solution: a fire-fighting folding life raft, comprising a life raft body 1, with L-shaped reaction tubes 2 fixedly connected to the four corners of the life raft body 1, and air inlet hoses 21 fixedly connected to one side of the outer surface of each of the four L-shaped reaction tubes 2. One end of each of the four air inlet hoses 21 is fixedly connected to the life raft body 1. A threaded cylinder 25 is fixedly connected to the inner wall of the feed end of each L-shaped reaction tube 2, and a storage tank 24 is provided inside the threaded cylinder 25. A through hole 26 is provided through the outer surface of the storage tank 24. The L-shaped reaction tube 2 is inserted into the storage tank 24, which contains a mixture of citric acid and sodium bicarbonate. The outer surface of the threaded cylinder 25 is threaded with a sealing cap 22. The bottom of the L-shaped reaction tube 2 is fixedly connected with a ramp 23, which is used to facilitate the concentration of added water at the lower end of the storage tank 24, thereby improving the reaction efficiency. The outer surface of the life raft body 1 is fixedly connected with a protective layer 13. A connecting block 12 is fixedly connected to one side of the protective layer 13. Handles 11 are fixedly connected to the four corners of the upper end of the life raft body 1, and the four handles 11 are arranged in a rectangular array.

[0027] By turning the sealing cap 22, the inlet of the L-shaped reaction tube 2 is opened, and water is added into the L-shaped reaction tube 2. After adding water, the sealing cap 22 is tightened again. The other L-shaped reaction tubes 2 are operated in the same way. When the water comes into contact with the citric acid and sodium bicarbonate mixture placed in the storage tank 24, a reaction occurs to generate carbon dioxide. The carbon dioxide enters the life raft body 1 along the air inlet hose 21, thus inflating the life raft body 1. This structure is simple and easy to operate, avoiding the need for life rafts to be inflated in a queue, allowing rescue forces to be deployed quickly and improving the timely rescue of trapped personnel.

[0028] It is important to note that after the gas is expelled from the main body 1 of the life raft, it can be folded into a block for easy carrying by firefighters. The gas filling the main body 1 of the life raft is five liters in volume. The total amount of the citric acid and sodium bicarbonate mixture in the four L-shaped reaction tubes 2 is 30 grams, with 13 grams of citric acid and 17 grams of sodium bicarbonate. A small amount of water will be produced during the reaction. After the main body 1 of the life raft is fully inflated, the air inlet hose 21 is closed through the internal structure of the sealing box 4, and the sealing cover 22 is rotated to pour out the water and remaining reagents produced after the reaction. The storage tank 24 is made of titanium alloy, which has strong corrosion resistance and prevents damage to the storage tank 24 after prolonged use.

[0029] During rescue operations, the protective layer 13 is used to protect the surface of the life raft body 1, preventing it from being scratched and improving the overall strength of the life raft body 1; the connecting block 12 is used to facilitate the passage of ropes to connect several life raft bodies 1 together, and also allows people on the shore to easily pull the ropes to pull the life raft body 1 back to the shore; the handle 11 is used to facilitate trapped people to grab the life raft body 1, preventing people from falling into the water when the life raft body 1 shakes.

[0030] Example 2 Please see Figures 1 to 6 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that: the inner walls of the inlet of the storage tank 24 are symmetrically and fixedly connected with extension ears 31; the inner center of the sealing cover 22 is rotatably connected with a rotating disk 32; the lower ends of the rotating disk 32 are symmetrically and fixedly connected with locking blocks 33; the extension ears 31 are slidably connected in the locking blocks 33; the upper center of the rotating disk 32 is fixedly connected with a rotating rod; the rotating rod extends into the sealing cover 22; one end of the rotating rod is fixedly connected with a rotating cap 3; the lower end of the rotating cap 3 is fixedly connected with a sealing plate 34; the lower end of the sealing plate 34 is fixedly connected with a sealing ring 35; the upper end of the sealing cover 22 is provided with a rotating groove; and the sealing ring 35 is in the rotating groove.

[0031] Through the structural design of the rotating cap 3, the extended ear 31, and the locking block 33, when water is added to the L-shaped reaction tube 2, the operator rotates the rotating cap 3, and the rotating disk 32 rotates inside the sealing cover 22. Due to the locking block 33 inside the extended ear 31, the storage tank 24 rotates together with the rotating disk 32, so that the citric acid and sodium bicarbonate mixture in the storage tank 24 comes into rapid contact with water, improving the reaction efficiency and quickly generating carbon dioxide to inflate the life raft body 1, thereby increasing the inflation speed of the life raft body 1.

[0032] Gas generated during use may escape from the gap between the rotating disk 32 and the sealing cover 22. The structural design of the sealing plate 34 and the sealing ring 35 improves the sealing performance of the gap between the rotating disk 32 and the sealing cover 22, prevents gas from escaping, ensures the inflation speed, and this structure can also provide a secondary seal for the air inlet hose 21. The extension ear 31 also makes it convenient for the staff to take the storage bucket 24, thereby facilitating the addition of water to the L-shaped reaction tube 2.

[0033] It is important to note that when tightening the sealing cap 22 onto the L-shaped reaction tube 2, you should first align the locking block 33 with the extension lug 31, and then rotate the sealing cap 22 to tighten it onto the L-shaped reaction tube 2 and seal it.

[0034] The remaining structure is the same as that in Example 1.

[0035] Example 3 Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 7 This is the third embodiment of the present invention. The difference between this embodiment and the first and second embodiments is that: a sealing box 4 is fixedly connected to the outer surface of the air intake hose 21, a cavity is opened inside the sealing box 4, a rack plate 42 is slidably connected to the inner wall of the cavity, a rack plate 43 is fixedly connected to one side of the inner wall of the cavity, the air intake hose 21 is located between the rack plate 43 and the rack plate 42, a threaded hole is opened on one side of the sealing box 4, a screw 41 is threadedly connected to the inner wall of the threaded hole, and one end of the screw 41 is rotatably connected to one side of the rack plate 42.

[0036] Through the structural design of the sealing box 4, screw 41, rack plate one 42 and rack plate two 43, rotating the screw 41 moves along the threaded hole on the sealing box 4, pushing rack plate one 42 to slide in the cavity of the sealing box 4, so that rack plate two 43 and rack plate one 42 approach each other. When the toothed block on rack plate one 42 is engaged in the tooth groove of rack plate two 43, the air inlet hose 21 is squeezed and sealed to prevent gas in the life raft body 1 from running into the L-shaped reaction tube 2. At the same time, the sealing cover 22 seals the inlet of the L-shaped reaction tube 2. This structure works together to achieve double sealing and prevent air leakage during use.

[0037] It should be noted that the racks on rack plate 2 43 and rack plate 1 42 are interlocked. When rack plate 2 43 and rack plate 1 42 are joined together, the intake hose 21 is clamped between rack plate 2 43 and rack plate 1 42, which squeezes the intake hose 21 into a wavy shape, thereby improving the sealing performance.

[0038] The remaining structures are the same as those in Examples 1 and 2.

[0039] This invention provides a foldable life raft specifically for firefighting, the specific working principle of which is as follows: When inflating the life raft body 1, first unscrew the sealing cap 22 to open the inlet of the L-shaped reaction tube 2 and add water into it. After adding water, tighten the sealing cap 22 again. Repeat the same operation for the other L-shaped reaction tubes 2. When the water comes into contact with the citric acid and sodium bicarbonate mixture in the storage tank 24, a reaction occurs to generate carbon dioxide. The carbon dioxide enters the life raft body 1 along the air intake hose 21. At the same time, the operator rotates the rotating cap 3, and the rotating disc 32 rotates inside the sealing cap 22. Due to the locking block 33 inside the extension ear 31, the storage tank 24 rotates together with the rotating disc 32, causing the citric acid in the storage tank 24 to react with the sodium bicarbonate mixture in the storage tank 24. The sodium bicarbonate mixture comes into rapid contact with water, improving reaction efficiency and quickly generating carbon dioxide to inflate the life raft body 1. After inflation, screw 41 is rotated, moving along the threaded hole on the sealing box 4, pushing rack plate 42 to slide within the cavity of the sealing box 4. This causes rack plate 43 to move closer to rack plate 42. When the teeth on rack plate 42 engage with the grooves of rack plate 43, the air inlet hose 21 is squeezed and sealed. Then, the sealing cap 22 is rotated to pour out the water and remaining reagents produced after the reaction. After pouring out the water and remaining reagents, the sealing cap 22 is tightened, and the rescuers can then use the life raft body 1 for rescue operations.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fire-fighting folding life raft, characterized in that: The life raft body (1) has L-shaped reaction tubes (2) fixedly connected to the four corners inside. One side of the outer surface of the four L-shaped reaction tubes (2) is fixedly connected to an air inlet hose (21). One end of the four air inlet hoses (21) is fixedly connected to the life raft body (1). A threaded cylinder (25) is fixedly connected to the inner wall of the feed end of the L-shaped reaction tube (2). A storage tank (24) is provided inside the threaded cylinder (25). A through hole (26) is opened through the outer surface of the storage tank (24). The storage tank (24) extends into the L-shaped reaction tube (2). A mixture of citric acid and sodium bicarbonate is placed inside the storage tank (24). A sealing cap (22) is threadedly connected to the outer surface of the threaded cylinder (25).

2. The fire-fighting folding life raft according to claim 1, characterized in that: The bottom of the L-shaped reaction tube (2) is fixedly connected to a ramp (23).

3. The fire-fighting folding life raft according to claim 1, characterized in that: The storage tank (24) has extension ears (31) symmetrically fixedly connected to both sides of the inner wall of the inlet. The sealing cover (22) has a rotating disk (32) rotatably connected to the middle of its interior. The rotating disk (32) has locking blocks (33) symmetrically fixedly connected to both sides of its lower end. The extension ears (31) are slidably connected to the locking blocks (33). The rotating disk (32) has a rotating rod fixedly connected to the middle of its upper end. The rotating rod extends into the sealing cover (22), and a rotating cap (3) is fixedly connected to one end of the rotating rod.

4. A fire-fighting folding life raft according to claim 3, characterized in that: The lower end of the rotating cap (3) is fixedly connected to a sealing plate (34), and the lower end of the sealing plate (34) is fixedly connected to a sealing ring (35). The upper end of the sealing cover (22) is provided with a rotating groove, and the sealing ring (35) is in the rotating groove.

5. A fire-fighting folding life raft according to claim 1, characterized in that: The outer surface of the air intake hose (21) is fixedly connected to a sealing box (4), and the inside of the sealing box (4) is provided with a cavity. The inner wall of the cavity is slidably connected to a rack plate one (42), and a rack plate two (43) is fixedly connected to one side of the inner wall of the cavity. The air intake hose (21) is located between the rack plate two (43) and the rack plate one (42).

6. A fire-fighting folding life raft according to claim 5, characterized in that: The sealing box (4) has a threaded hole on one side, and a screw (41) is threadedly connected to the inner wall of the threaded hole. One end of the screw (41) is rotatably connected to one side of the rack plate (42).

7. A fire-fighting folding life raft according to claim 1, characterized in that: A protective layer (13) is fixedly connected to the outer surface of the life raft body (1), and a connecting block (12) is fixedly connected to one side of the protective layer (13).

8. A fire-fighting folding life raft according to claim 1, characterized in that: The life raft body (1) is fixedly connected to four handles (11) at the upper corners, and the four handles (11) are arranged in a rectangular array.

Images