Reverse osmosis membrane emergency seawater desalination device
By combining a seawater desalination device with a rescue airbag, the pressure difference created by the stretching of the airbag is used for seawater desalination. The device also employs an automatic inflation and dewatering structure, which solves the problem of cumbersome operation in existing technologies and achieves efficient seawater desalination and convenient freshwater access.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- GUANGZHOU POTONG MEMBRANE TECH CO LTD
- Filing Date
- 2026-04-16
- Publication Date
- 2026-06-05
AI Technical Summary
The existing seawater desalination equipment and rescue airbags are separate products, which require the person falling into the water to operate them separately. This is cumbersome and not conducive to a rapid response in emergency situations.
By combining seawater desalination with a rescue airbag, the system desalinates seawater by creating a pressure difference through stretching the waterbag, and employs an automatic trigger valve and an automatic shut-off structure to achieve automatic airbag inflation and automatic freshwater discharge.
It improves desalination efficiency, provides fresh water in a timely manner, and increases the survival probability and ease of operation for people who fall into the water.
Smart Images
Figure CN122144848A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of seawater desalination technology, specifically to an emergency seawater desalination device using a reverse osmosis membrane. Background Technology
[0002] Existing technologies include devices for rapid seawater desalination using reverse osmosis membrane technology, such as the emergency seawater desalination device using reverse osmosis membrane disclosed in Chinese Patent CN202123069478.4. This device does not rely on solar or tidal energy and can quickly produce fresh water in emergencies (such as maritime disasters), demonstrating good practicality. However, in actual maritime disaster scenarios, those who fall into the water not only urgently need fresh water but also often rely on rescue airbags to maintain their buoyancy. Without rescue airbags, it is difficult for those in the water to stably operate the seawater desalination device, thus affecting its usability. Currently, most common seawater desalination devices and rescue airbags are independent products, and their functions cannot work together. Those in the water must operate two separate sets of equipment, which is cumbersome and hinders rapid response in emergencies. To address these problems, this invention proposes an emergency seawater desalination device using reverse osmosis membrane. Summary of the Invention
[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide an emergency seawater desalination device with a reverse osmosis membrane, which organically combines the seawater desalination function with the rescue airbag function, thereby improving the survival probability and ease of operation for people who fall into the water.
[0004] This invention is achieved through the following technical solution: An emergency seawater desalination device using a reverse osmosis membrane includes a water bladder and an air bladder. The water bladder has a first fixed end and a second fixed end, which are compressible along the arrangement direction of the two fixed ends. The first fixed end of the water bladder is provided with a grip for a user's hand to hold, or a fixing part suitable for fixing to a user's body. The water bladder has a freshwater inlet and a freshwater outlet. The freshwater inlet is covered with a reverse osmosis membrane, and the freshwater outlet is equipped with a first one-way valve. The air bladder is fixedly connected to the second fixed end of the water bladder through a connecting structure.
[0005] Optionally, the reverse osmosis membrane emergency seawater desalination device further includes a double-layered outer container, with a water passage between the inner and outer layers of the outer container. The water bladder is installed inside the inner layer of the outer container and connected to the water passage. An inlet is provided through the outer layer of the outer container, and the reverse osmosis membrane covers the inlet. The inlet and the water passage constitute the freshwater inlet.
[0006] Optionally, the outer container has a container opening, the water bladder is installed at a position away from the container opening, and the outer container is provided with a first compression spring for compressing the water bladder; the reverse osmosis membrane emergency seawater desalination device also includes a gas cylinder, the gas cylinder is fixed to the second fixed end of the water bladder, the connection structure is a connecting pipe connecting the gas inlet of the gas bladder and the mouth of the gas cylinder, and the mouth of the gas cylinder is provided with a valve structure.
[0007] Optionally, the valve structure includes a sealing membrane, a top plate, a puncture needle, a second compression spring, a trigger box, a compression cotton, and a locking pin. The sealing membrane seals the mouth of the gas cylinder, the top plate is elastically disposed inside the mouth of the gas cylinder by the second compression spring, the puncture needle is fixed to the top plate, the trigger box is fixed relative to the mouth of the gas cylinder and has a water passage hole, the compression cotton is installed inside the trigger box, and the locking pin is movably disposed between the top plate and the compression cotton.
[0008] Optionally, the outer container further includes a sealing cap covering the container opening, with one end of the airbag away from the water bladder fixed to the inside of the sealing cap.
[0009] Optionally, the airbag's inflation nozzle is equipped with a second one-way valve and an automatic cut-off structure. The automatic cut-off structure includes a pull rod, a third compression spring, a cutter, a connecting rod, and a pull rope. The pull rod is elastically connected to the airbag's inflation nozzle via the third compression spring. The cutter is movably connected to the airbag's inflation nozzle in a direction perpendicular to the connecting tube. The connecting rod is movably connected between the pull rod and the cutter. One end of the pull rope is fixed to the pull rod, and the other end is fixed to the outer container.
[0010] Optionally, the automatic cutting structure is provided in two sets, with the cutters of the two sets of automatic cutting structures symmetrically arranged on both sides of the connecting pipe.
[0011] Optionally, the freshwater outlet is a flexible long straw, and the first one-way valve is installed on the flexible long straw.
[0012] Optionally, a float is fixed to the end of the flexible long straw away from the water bladder.
[0013] Optionally, the grip portion is a pull ring.
[0014] Compared with the prior art, the present invention provides an emergency seawater desalination device using a reverse osmosis membrane, which has the following beneficial effects: 1. This invention organically combines the seawater desalination function with the rescue airbag function, so that while the airbag provides buoyancy for people who have fallen into the water, it also provides power for the seawater desalination process of the reverse osmosis membrane by stretching the waterbag to form a pressure difference, effectively improving the desalination efficiency, providing fresh water to people who have fallen into the water in a timely manner, and improving the survival probability and ease of operation of people who have fallen into the water. 2. By setting an automatic trigger valve structure, the present invention can automatically and promptly open the cylinder opening to inflate the airbag after a user falls into the water, without requiring manual operation by the user, thus further improving the survival probability and ease of operation for people who fall into the water. 3. By setting a second one-way valve and an automatic shut-off structure that work in conjunction with the first compression spring, the present invention can automatically cut off the connecting pipe between the water bladder and the air bladder when the water bladder has stored a certain amount of fresh water, so that the tension of the air bladder no longer acts on the second fixed end of the water bladder, and the rebound force of the first compression spring is used to quickly squeeze the water out of the water bladder so that the person who fell into the water can drink it. Attached Figure Description
[0015] Figure 1 A schematic diagram of the structure of an emergency seawater desalination unit using a reverse osmosis membrane in operation; Figure 2 A schematic diagram of the structure of an emergency seawater desalination unit with reverse osmosis membrane in standby mode; Figure 3 This is a schematic diagram showing the structure of the automatic cutting mechanism; Figure 4 This is a structural diagram mainly showing the valve structure; Figure 5 A schematic diagram of the structure of an emergency seawater desalination device using a reverse osmosis membrane in the inflated state. Figure 6 for Figure 5 A partial structural diagram.
[0016] In the diagram: 100, water bladder; 101, water passage hole; 110, first fixed end; 120, second fixed end; 130, first one-way valve; 200, air bladder; 210, air injection nozzle; 220, second one-way valve; 230, automatic cutting structure; 231, pull rod; 232, third compression spring; 233, cutter; 234, connecting rod; 235, pull rope; 240, flexible long straw; 241, float; 300, grip. 400. Reverse osmosis membrane; 500. External container; 510. Water passage; 520. First compression spring; 630. Sealing cap; 600. Gas cylinder; 610. Bottle mouth; 620. Valve structure; 621. Sealing membrane; 622. Top plate; 623. Puncture needle; 624. Second compression spring; 625. Trigger box; 6250. Water inlet; 626. Compressed cotton; 627. Locking pin; 700. Connecting pipe; 800. Pull ring. Detailed Implementation
[0017] 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.
[0018] As described in the background section, most common seawater desalination devices and rescue airbags are currently independent products. They cannot work together, and people who fall into the water need to operate two separate sets of equipment, which is cumbersome and not conducive to rapid response in emergency situations.
[0019] To address the above issues, please refer to the following implementation example: Figures 1 to 6 According to an embodiment of the present invention, an emergency seawater desalination device using a reverse osmosis membrane is provided, mainly comprising a water bladder 100 and an air bladder 200. The water bladder 100 has a first fixed end 110 and a second fixed end 120, which are opposite to each other. The water bladder 100 can be compressed along the arrangement direction of the two fixed ends. The first fixed end 110 of the water bladder 100 is provided with a gripping part 300 for the user's hand to hold, or a fixing part suitable for fixing to the user's body. The water bladder 100 is provided with a freshwater inlet and a freshwater outlet. The freshwater inlet is covered with a reverse osmosis membrane 400, through which water molecules in the seawater can enter the water bladder 100. A first one-way valve 130 is installed at the freshwater outlet to prevent seawater from entering the water bladder 100 through the freshwater outlet. The air bladder 200 is fixedly connected to the second fixed end 120 of the water bladder 100 through a connecting structure.
[0020] In this embodiment, before use, the water bladder 100 is kept in a compressed state. When the user falls into the water, the person in the water can apply a downward pulling force to the water bladder 100 through the grip part 300 or the fixing part. At this time, the air bladder 200 provides the user with an upward buoyancy to ensure that he floats on the sea surface. At the same time, the water bladder 100 is below the water surface and is gradually stretched. The air pressure in the water bladder 100 decreases accordingly. Under the action of pressure difference, water molecules in the seawater pass through the reverse osmosis membrane 400 of the fresh water inlet and quickly enter the water bladder 100 for storage. The person in the water can drink the fresh water stored in the water bladder 100 by holding the fresh water outlet in their mouth and sucking hard. It is evident that this reverse osmosis membrane 400 emergency seawater desalination device organically combines the seawater desalination function with the rescue airbag 200 function. While providing buoyancy for people who have fallen into the water, the airbag 200 also creates a pressure difference by stretching the waterbag 100, which provides power for the seawater desalination process of the reverse osmosis membrane 400. This effectively improves the desalination efficiency, provides fresh water to people who have fallen into the water in a timely manner, and increases the survival probability and ease of operation for people who have fallen into the water.
[0021] like Figure 2As shown, in some embodiments, the emergency seawater desalination device with reverse osmosis membrane 400 further includes a double-layered outer container 500. A water passage 510 is formed between the inner and outer layers of the outer container 500. A water bladder 100 is installed inside the inner layer of the outer container 500 and communicates with the water passage 510. The first fixed end 110 of the water bladder 100 has a water passage hole 101, which communicates with the water passage 510. An inlet is provided through the outer layer of the outer container 500, and the reverse osmosis membrane 400 covers the inlet. The inlet and the water passage 510 constitute a freshwater inlet. The outer container 500 can be made of a rigid material, such as rigid plastic, to provide protection for the water bladder 100. By using the water passage 510 and the inlet of the outer container 500 as the freshwater inlet of the water bladder 100, the inflow rate of the freshwater inlet can be increased, thereby improving the seawater desalination rate.
[0022] In some embodiments, the outer container 500 has a container opening, the water bladder 100 is installed at a position away from the container opening, and a first compression spring 520 for compressing the water bladder 100 is provided inside the outer container 500; the reverse osmosis membrane 400 emergency seawater desalination device also includes a gas cylinder 600, which is fixed to the second fixed end 120 of the water bladder 100. The connection structure is a connecting pipe 700 connecting the air inlet 210 of the gas bladder 200 and the bottle mouth 610 of the gas cylinder 600. The bottle mouth 610 of the gas cylinder 600 is provided with a valve structure 620. It is understood that the gas cylinder 600 can be filled with high-pressure gas (such as carbon dioxide). Before use, the gas bladder 200 is in a pre-compressed state without gas and is stored in the outer container 500 through the container opening, so that the overall device maintains a compact size for easy carrying. When in use, the valve structure 620 of the bottle mouth 610 of the gas cylinder 600 is opened, and the high-pressure gas is released instantly and fills the gas bladder 200. At this time, the gas bladder 200 provides buoyancy support for the user. Under the pulling force of the airbag 200, the waterbag 100 is stretched and the first compression spring 520 is compressed simultaneously, allowing water molecules in the seawater to permeate into the waterbag 100 through the freshwater inlet. It is evident that this design allows the emergency seawater desalination device using the reverse osmosis membrane 400 to have a very small volume before use, making it easy to carry.
[0023] In the above embodiment, if the valve structure 620 adopts a common manually operated mechanical valve, the panic experienced by a person falling into the water will make it difficult for them to quickly operate the valve structure 620, resulting in the airbag 200 not inflating in time, leading to a poor user experience. To solve this problem... Figure 4As shown, in some embodiments, the valve structure 620 adopts an automatic trigger valve structure 620. The valve structure 620 includes a sealing membrane 621, a top plate 622, a puncture needle 623, a second compression spring 624, a trigger box 625, a compression cotton 626, and a locking pin 627. The sealing membrane 621 seals the mouth 610 of the gas cylinder 600. The top plate 622 is elastically disposed inside the mouth 610 of the gas cylinder 600 by the second compression spring 624. The puncture needle 623 is fixed to the top plate 622. The trigger box 625 is fixed relative to the mouth 610 of the gas cylinder 600 and has a water passage hole 6250. The compression cotton 626 is installed inside the trigger box 625. The locking pin 627 is movably disposed between the top plate 622 and the compression cotton 626. With this setup, when the reverse osmosis membrane 400 emergency seawater desalination device is not in use, the gas cylinder 600 is filled with high-pressure gas. The sealing membrane 621 seals the opening 610 of the gas cylinder 600 to prevent gas from escaping. The compression cotton 626 is in a dry compressed state. The locking pin 627 locks the top plate 622 in position, the second compression spring 624 is compressed, and the piercing needle 623 on the top plate 622 is aligned with the sealing membrane 621. In the event of an accidental fall into the water, the outer container 500 is submerged in seawater. Seawater can enter the interior of the outer container 500 through the container opening, and then trigger... Water enters the trigger box 625 through the water inlet 6250. The compressed cotton 626 absorbs water and expands upon contact with seawater. The expanded compressed cotton 626 pushes the locking pin 627 to move, releasing the locking pin 627 from locking the top plate 622. Once released, the top plate 622 moves towards the sealing membrane 621 under the elastic force of the second compression spring 624. The piercing needle 623 on the top plate 622 punctures the sealing membrane 621, and air from the gas cylinder 600 enters the connecting tube 700 through the internal channel of the piercing needle 623, and then enters the airbag 200 through the connecting tube 700, instantly inflating the airbag 200. Therefore, by using the valve structure 620 described above, the airbag 200 can be automatically and promptly inflated after a user falls into the water, without requiring manual operation by the user, further improving the survival probability and ease of operation for those who fall into the water.
[0024] like Figure 2 and Figure 5 As shown, in some embodiments, the outer container 500 also includes a sealing cap 630 covering the container opening, with the end of the airbag 200 away from the water bladder 100 fixed to the inside of the sealing cap 630. By providing the sealing cap 630, when the emergency seawater desalination device of the reverse osmosis membrane 400 is not in use, the sealing cap 630 can be used to seal the container opening of the outer container 500, preventing external moisture from entering the outer container 500 and affecting the state of the compressed cotton 626 in the valve structure 620, thus extending the service life of the emergency seawater desalination device of the reverse osmosis membrane 400. By fixing the end of the airbag 200 away from the water bladder 100 to the inside of the sealing cap 630, the airbag 200 can be easily stored, and the probability of the sealing cap 630 being lost is also reduced.
[0025] In the above embodiment, because the water bladder 100 is constantly held by the air bladder 200, the person who has fallen into the water needs to exert a lot of force to suck the water out of the freshwater outlet from the water bladder 100. This is very inconvenient for a weak person who has fallen into the water. To make it easier for the person who has fallen into the water to drink the water in the water bladder 100, such as... Figure 2 and Figure 3 As shown, in some embodiments, the air inlet 210 of the airbag 200 is provided with a second one-way valve 220 and an automatic cutting structure 230. The automatic cutting structure 230 includes a pull rod 231, a third compression spring 232, a cutter 233, a connecting rod 234, and a pull rope 235. The pull rod 231 is elastically connected to the air inlet 210 of the airbag 200 through the third compression spring 232. The cutter 233 is movably connected to the air inlet 210 of the airbag 200 in a direction perpendicular to the connecting tube 700. The connecting rod 234 is movably connected between the pull rod 231 and the cutter 233. The two ends of the connecting rod 234 are rotatably connected to the pull rod 231 and the cutter 233 respectively through a rotating shaft. One end of the pull rope 235 is fixed to the pull rod 231, and the other end is fixed to the outer container 500. By setting a second one-way valve 220 and an automatic shut-off structure 230 that work in conjunction with the first compression spring 520, the connecting pipe 700 between the water bladder 100 and the air bladder 200 can be automatically shut off when the water bladder 100 stores a certain amount of fresh water. This prevents the tension of the air bladder 200 from acting on the second fixed end 120 of the water bladder 100, and the rebound force of the first compression spring 520 is used to quickly squeeze the water out of the water bladder 100 for easy drinking by people who have fallen into the water. Specifically: Before use, the air bladder 200 is in a pre-compressed state without air and is stored in the external container 500 through the container opening. When in use, the valve structure 620 of the gas cylinder 600 opening 610 is opened, and the high-pressure gas is released instantly and fills the air bladder 200. At this time, the air bladder 200 provides buoyancy support for the user. Under the tension of the air bladder 200, the water bladder 100 is stretched and the first compression spring 520 is compressed simultaneously. Water molecules in the seawater permeate into the interior of the water bladder 100 through the fresh water inlet. As the water bladder 100 is stretched, the pull rope 235 is gradually straightened. The pull rope 235 pulls the pull rod 231 to move. The pull rod 231 drives the cutter 233 to move through the connecting rod 234. The cutter 233 cuts the connecting tube 700 connecting the water bladder 100 and the air bladder 200. After the connecting tube 700 is cut off, the return force of the first compression spring 520 can automatically press out the fresh water in the water bladder 100 through the fresh water outlet to achieve convenient drinking.
[0026] like Figure 3 As shown, in some embodiments, the automatic cutting structure 230 is provided in two sets, and the cutters 233 of the two sets of automatic cutting structures 230 are symmetrically arranged on both sides of the connecting pipe 700. By providing two sets of automatic cutting structures 230 and symmetrically arranging the cutters 233 of the two sets of automatic cutting structures 230, the connecting pipe 700 can be cut more effectively by the two oppositely moving cutters 233.
[0027] like Figure 2 As shown, in some embodiments, the freshwater outlet is a flexible long suction tube 240, and a first one-way valve 130 is disposed on the flexible long suction tube 240. The flexible long suction tube 240 can lead the freshwater outlet to the water surface, making it convenient for people who have fallen into the water to obtain the freshwater collected in the water bag 100.
[0028] like Figure 2 As shown, in some embodiments, a float 241 is fixed to the end of the flexible long straw 240 away from the water bladder 100. The float 241 can make the end of the flexible long straw 240 away from the water bladder 100 float on the water surface, making it easier for people who have fallen into the water to quickly find the flexible long straw 240 and drink water.
[0029] like Figure 2 As shown, in some embodiments, the grip 300 is a pull ring 800, which can be fixed to the outside of the outer container 500. In other embodiments, the grip 300 can also be other shapes that are convenient for a person falling into the water to grasp.
[0030] In some embodiments, the fixing part suitable for fixing to the user's body is a strap, which is provided with Velcro or buckles, and the water bag 100 can be fixed to the user's arm by the strap with Velcro or buckles.
[0031] 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. An emergency seawater desalination device using a reverse osmosis membrane, characterized in that, The device includes a water bladder (100) and an air bladder (200). The water bladder (100) has a first fixed end (110) and a second fixed end (120) opposite to each other. The water bladder (100) can be compressed along the arrangement direction of the two fixed ends. The first fixed end (110) of the water bladder (100) is provided with a gripping part (300) for the user to hold, or a fixing part suitable for fixing to the user's body. The water bladder (100) is provided with a fresh water inlet and a fresh water outlet. The fresh water inlet is covered with a reverse osmosis membrane (400), and the fresh water outlet is equipped with a first one-way valve (130). The air bladder (200) is fixedly connected to the second fixed end (120) of the water bladder (100) through a connecting structure.
2. The emergency seawater desalination device using a reverse osmosis membrane according to claim 1, characterized in that: It also includes a double-layered outer container (500), with a water passage (510) between the inner and outer layers of the outer container (500). The water bladder (100) is installed inside the inner layer of the outer container (500) and is connected to the water passage (510). An inlet is provided through the outer layer of the outer container (500), and the reverse osmosis membrane (400) covers the inlet. The inlet and the water passage (510) constitute the freshwater inlet.
3. The emergency seawater desalination device using a reverse osmosis membrane according to claim 2, characterized in that: The outer container (500) has a container opening, and the water bladder (100) is installed at a position away from the container opening. The outer container (500) is provided with a first compression spring (520) for compressing the water bladder (100). The reverse osmosis membrane (400) emergency seawater desalination device also includes a gas cylinder (600). The gas cylinder (600) is fixed to the second fixed end (120) of the water bladder (100). The connection structure is a connecting pipe (700) connecting the air injection nozzle (210) of the gas bladder (200) and the bottle mouth (610) of the gas cylinder (600). The bottle mouth (610) of the gas cylinder (600) is provided with a valve structure (620).
4. The emergency seawater desalination device using a reverse osmosis membrane according to claim 3, characterized in that: The valve structure (620) includes a sealing membrane (621), a top plate (622), a puncture needle (623), a second compression spring (624), a trigger box (625), a compression cotton (626), and a locking pin (627). The sealing membrane (621) seals the mouth (610) of the gas cylinder (600). The top plate (622) is elastically disposed inside the mouth (610) of the gas cylinder (600) by the second compression spring (624). The puncture needle (623) is fixed to the top plate (622). The trigger box (625) is fixed relative to the mouth (610) of the gas cylinder (600) and has a water passage hole (6250). The compression cotton (626) is installed inside the trigger box (625). The locking pin (627) is movably disposed between the top plate (622) and the compression cotton (626).
5. The emergency seawater desalination device using a reverse osmosis membrane according to claim 4, characterized in that: The outer container (500) also includes a sealing cap (630) covering the container opening, and one end of the airbag (200) away from the water bag (100) is fixed to the inside of the sealing cap (630).
6. The emergency seawater desalination device using a reverse osmosis membrane according to claim 3, characterized in that: The air inlet (210) of the airbag (200) is provided with a second one-way valve (220) and an automatic cutting structure (230). The automatic cutting structure (230) includes a pull rod (231), a third compression spring (232), a cutter (233), a connecting rod (234), and a pull rope (235). The pull rod (231) is elastically connected to the air inlet (210) of the airbag (200) through the third compression spring (232). The cutter (233) is movably connected to the air inlet (210) of the airbag (200) in a direction perpendicular to the connecting tube (700). The connecting rod (234) is movably connected between the pull rod (231) and the cutter (233). One end of the pull rope (235) is fixed to the pull rod (231), and the other end is fixed to the outer container (500).
7. The emergency seawater desalination device using a reverse osmosis membrane according to claim 6, characterized in that: The automatic cutting structure (230) is provided in two sets, and the cutters (233) of the two sets of automatic cutting structures (230) are symmetrically arranged on both sides of the connecting pipe (700).
8. The emergency seawater desalination device using a reverse osmosis membrane according to claim 1, characterized in that: The freshwater outlet is a flexible long straw (240), and the first one-way valve (130) is installed on the flexible long straw (240).
9. The emergency seawater desalination device using a reverse osmosis membrane according to claim 8, characterized in that: A float (241) is fixed to one end of the flexible long straw (240) away from the water bladder (100).
10. The emergency seawater desalination device using a reverse osmosis membrane according to claim 1, characterized in that: The grip (300) is a pull ring (800).