Unpowered seawater desalination cup

Abstract

The unpowered seawater desalination cup comprises an inner shell, an outer shell, an RO membrane assembly and a top cover assembly, a plurality of water passing holes are formed in the side walls of the inner shell and the outer shell, the RO membrane assembly is tightly arranged on the periphery of the inner shell in a sleeving mode and covers the water passing holes in the side wall of the inner shell, a water purification cavity is formed in the inner shell, and a water outlet is formed in the top cover assembly. The inner shell and the RO membrane assembly are arranged in the outer shell, the top of the inner shell and the top of the outer shell are both connected with the top cover assembly in a sealed mode, the top cover assembly is provided with a water purification cavity exhaust pipe, and the water purification cavity exhaust pipe is communicated with the water purification cavity and the exterior of the desalination cup; the overall density of the desalination cup is larger than that of seawater, the desalination cup automatically sinks in the seawater through the gravity of the desalination cup to achieve seawater desalination, and the seawater desalination device can achieve seawater desalination without using manpower or other power sources to compress the seawater.

Description

[0001] This case applies for Chinese priority, priority numbers: 202311351822X, 2023227967342, priority date: 2023-10-18 Technical Field

[0002] The utility model belongs to the technical field of seawater desalination, and particularly relates to a non-powered seawater desalination cup. Background Art

[0003] At present, with the increase of people's diverse marine adventure sports, it is inconvenient to carry fresh water with you for adventure sports, which increases the weight. In the process of marine fishing activities, fishing activities at sea generally take a long time and have many uncertain factors. There is always a possibility of lack of drinking fresh water, but seawater cannot be directly drunk, which brings a great difficulty to people's drinking fresh water. Therefore, using local materials to desalinate seawater is the most convenient and effective way. However, the existing seawater desalination cups filter seawater through RO membranes (reverse osmosis membranes). When used, manpower or other power sources are needed to compress seawater to pass through the RO membrane. The use of manpower is laborious, the speed of obtaining fresh water is slow, and it is difficult to cope with emergency situations. Setting up other power source devices will increase the cost and volume of the desalination cup, and it is inconvenient to carry. Utility Model Content

[0004] The utility model aims to provide a non-powered seawater desalination cup, which overcomes the defect of the background technology that requires manpower or other power sources to compress seawater.

[0005] To achieve the above-mentioned purpose, the solution of the utility model is: a non-powered seawater desalination cup, comprising an inner shell, an outer shell, an RO membrane assembly and a top cover assembly, the side walls of the inner shell and the outer shell are provided with a plurality of water holes, the RO membrane assembly is tightly sleeved on the outer periphery of the inner shell and covers the water holes on the side walls of the inner shell, a clean water cavity is formed inside the inner shell, the inner shell and the RO membrane assembly are arranged inside the outer shell, the tops of the inner shell and the outer shell are both sealed and connected with the top cover assembly, a clean water cavity exhaust pipe is provided on the top cover assembly, the clean water cavity exhaust pipe connects the clean water cavity and the outside of the desalination cup; the overall density of the desalination cup is greater than the density of seawater, and the desalination cup automatically sinks in the seawater by its own gravity to achieve seawater desalination.

[0006] Furthermore, a water hole is provided at the lower part of the side wall of the shell, a sealing ring is provided between the middle part of the shell and the RO module assembly, a wastewater cavity is formed on the upper part of the sealing ring, and a wastewater cavity exhaust pipe is also provided on the top cover assembly, and the wastewater cavity exhaust pipe connects the wastewater cavity and the outside of the desalination cup.

[0007] Furthermore, the RO membrane assembly includes an RO membrane and PP cotton, the RO membrane is in the shape of a circular tube with openings at the top and bottom, the inner shell and the PP cotton are both in the shape of a cylinder with a closed bottom and an open top, the RO membrane is sleeved on the outer periphery of the inner shell, the PP cotton is sleeved on the lower part of the inner shell and the RO membrane, and the top of the PP cotton abuts against the sealing ring, and the bottom of the PP cotton abuts against the bottom of the inner shell.

[0008] Furthermore, the top cover assembly includes a sealing cover and a pressure cover, the pressure cover is threadedly connected to the top of the outer shell and abuts against the top of the inner shell, and the bottom of the PP cotton abuts against the bottom of the outer shell; a water outlet channel connected to the water purification chamber is opened inside the pressure cover, and the top of the water outlet channel is an opening, and the sealing cover is threadedly connected to the top of the pressure cover to seal the opening.

[0009] Furthermore, a gap is left between the top end of the RO membrane and the pressure cover, and the bottom end of the RO membrane abuts against the PP cotton or a gap is left between the bottom end of the RO membrane and the PP cotton.

[0010] Furthermore, a circle of convex edges is radially protruded on the inner wall of the water outlet channel. When the pressure cover is threadedly connected to the top of the outer shell, the convex edge abuts against the top of the inner shell. Sealing rings are provided between the pressure cover and the outer shell, between the sealing cover and the pressure cover, and between the water outlet channel and the inner shell.

[0011] Furthermore, an activated carbon layer is provided on the inner wall of the inner shell, and the activated carbon layer covers the water holes on the side wall of the inner shell.

[0012] Furthermore, the sealing cover and the pressure cover are both provided with exhaust ports, and the bottoms of the clean water chamber exhaust pipe and the waste water chamber exhaust pipe are respectively plugged and fixed in the exhaust ports of the sealing cover and the pressure cover.

[0013] Furthermore, the exhaust pipe of the clean water chamber and the exhaust pipe of the waste water chamber are fiber tubes or food-grade plastic tubes.

[0014] Furthermore, the shell is made of metal material, or a counterweight is fixed to the bottom of the shell.

[0015] After adopting the above scheme, the beneficial effects of the utility model are:

[0016] The utility model is provided with a double-layer shell of an inner shell and an outer shell, and the side walls of the inner shell and the outer shell are provided with water holes. The RO membrane assembly is tightly sleeved on the outer periphery of the inner shell and covers the water holes on the side wall of the inner shell, and a clean water cavity is formed inside the inner shell; the overall density of the desalination cup is greater than the density of seawater, and the desalination cup is placed in the seawater as a whole. After the desalination cup is released, the desalination cup will sink to the sea bottom by its own gravity, and after the seawater passes through the water holes of the outer shell, it will squeeze the RO membrane assembly by its own underwater pressure, thereby passing through the RO membrane assembly for filtration, and the filtered fresh water enters the clean water cavity from the water holes on the side wall of the inner shell. During the sinking process, the top of the exhaust pipe always extends out of the sea surface, and the air inside the clean water cavity can be discharged to maintain the pressure balance in the clean water cavity, so that the seawater can pass through the RO membrane assembly into the clean water cavity to complete the desalination of seawater. The utility model is mainly used for emergency use. After filtering a part of the seawater, the desalination cup is quickly lifted out of the sea surface. During the rising process of the desalination cup, the change of water pressure has little effect on the RO membrane assembly.

[0017] Therefore, the desalination cup designed by the utility model does not need to use manpower to compress seawater, is easy to use and labor-saving, does not need to set up other power sources, saves costs, is small in size, easy to carry, and can quickly filter seawater, which is suitable for emergency use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a cross-sectional view of the utility model;

[0019] Figure 2 It is an exploded view of the utility model;

[0020] Figure 3 A three-dimensional diagram of an embodiment of the utility model;

[0021] Figure 4 It is a three-dimensional diagram of another embodiment of the utility model.

[0022] Description of labels:

[0023] 1. Outer shell; 11. Wastewater chamber; 12. Wastewater chamber exhaust pipe; 2. RO membrane assembly; 21. RO membrane; 22. PP cotton; 3. Top cover assembly; 31. Sealing cover; 311. Hand ring; 32. Pressure cover; 321. Water outlet channel; 322. Convex edge; 4. Clean water chamber exhaust pipe; 5. Counterweight; 6. Clean water chamber; 7. Inner shell; 8. Water hole; 9. Sealing ring; 10. Activated carbon layer. DETAILED DESCRIPTION

[0024] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] like Figure 1-4As shown, the utility model provides a non-powered seawater desalination cup, including an inner shell 7, an outer shell 1, an RO membrane assembly 2, and a top cover assembly 3. The side walls of the inner shell 7 and the outer shell 1 are both provided with a plurality of water holes 8. The RO membrane assembly 2 is tightly sleeved on the outer periphery of the inner shell 7 and covers the water holes 8 on the side walls of the inner shell 7. A clean water cavity 6 is formed inside the inner shell 7. The inner shell 7 and the RO membrane assembly 2 are arranged inside the outer shell 1. The tops of the inner shell 7 and the outer shell 1 are both sealed and connected with the top cover assembly 3. A clean water cavity exhaust pipe 4 is provided on the top cover assembly 3. The clean water cavity exhaust pipe 4 connects the clean water cavity 6 and the outside of the desalination cup.

[0026] Specifically, the shell 1 has a water hole 8 at the lower part of its side wall, a sealing ring 9 is provided between the middle part of the shell 1 and the RO membrane assembly 2, and the water hole 8 of the shell 1 is arranged below the sealing ring 9, so that a water inlet cavity is formed below the sealing ring 9 for entering seawater, while the side wall of the shell 1 has no water hole 8 above the sealing ring 9, and a wastewater cavity 11 is formed at the upper part of the sealing ring 9 for containing filtered wastewater, and a wastewater cavity exhaust pipe 12 is also provided on the top cover assembly 3, and the wastewater cavity exhaust pipe 12 connects the wastewater cavity 11 and the outside of the desalination cup.

[0027] The overall density of the desalination cup is set to be greater than the density of seawater. The desalination cup is placed in the seawater as a whole. The desalination cup will sink to the bottom of the sea due to its own gravity. After the seawater passes through the water hole 8 of the outer shell 1, it will use its own underwater pressure to squeeze the bottom of the RO membrane assembly 2, thereby entering from the bottom of the RO membrane assembly 2 for filtration. The filtered fresh water flows out from the water hole 8 on the side wall of the inner shell 7 into the clean water chamber 6, and the filtered waste water flows out from the top of the RO membrane assembly 2 into the waste water chamber 11. In addition, during the sinking process, the tops of the clean water chamber exhaust pipe 4 and the waste water chamber exhaust pipe 12 always extend out of the sea surface, and the air inside the clean water chamber 6 and the waste water chamber 11 can be discharged respectively to maintain the pressure balance inside the clean water chamber 6 and the waste water chamber 11. Therefore, through the squeezing of the seawater's own pressure, the seawater can pass through the RO membrane assembly 2 into the clean water chamber 6, and the waste water can flow into the waste water chamber 11, thereby completing the desalination of seawater. The flow direction of the seawater is as follows: Figure 1 As shown, since the RO membrane assembly 2 is tightly mounted on the outer periphery of the outer shell 1 and covers the water holes 8 on the side wall of the inner shell 7, seawater will not flow directly into the clean water chamber 6, but must be filtered by the RO membrane assembly 2 before entering the clean water chamber 6 through the water holes 8.

[0028] Due to the reverse osmosis effect of the RO membrane 21, the water in the water purification chamber 6 will not pass through the RO membrane assembly 2 and flow out. Moreover, the utility model is mainly used in emergency situations. After filtering a part of the seawater, the desalination cup is raised out of the seawater. During the rising process of the desalination cup, the change in the seawater pressure has little effect on the RO membrane assembly 2.

[0029] The overall density of the desalination cup vessel must be greater than the density of seawater in order to automatically sink in the seawater. The shell 1 and the top cover assembly 3 can be made of high-density materials to make the overall density of the desalination cup greater than the density of seawater. Preferably, a metal material is used to make the shell 1. In addition, a counterweight 5 can also be set at the bottom of the shell 1. The counterweight 5 has a large density and can also drive the entire desalination cup to sink. The material of the shell 1 is not limited. Of course, in order to ensure that the desalination cup can automatically sink, the shell 1 can be made of a metal material and a counterweight 5 can be set at the bottom of the shell 1.

[0030] Key References Figure 1 The RO membrane assembly 2 includes a RO membrane 21 and a PP cotton 22. The RO membrane 21 is tightly sleeved on the outer periphery of the inner shell 7, and the PP cotton 22 is arranged on the outer periphery of the RO membrane 21. The seawater first passes through the PP cotton 22 and then enters the RO membrane 21 for filtration. The PP cotton 22 can filter particulate matter in the seawater, such as sediment and suspended matter, so that the seawater filtration is cleaner, and it can also prevent particulate matter from clogging the RO membrane 21, thereby increasing the service life of the RO membrane 21.

[0031] Specifically, the RO membrane 21 is in the shape of a circular tube with openings at the top and bottom, and the inner shell 7 and the PP cotton 22 are both in the shape of a cylinder with a closed bottom and an open top. The PP cotton 22 is sleeved on the lower part of the inner shell 7 and the RO membrane 21, and the top of the PP cotton 22 abuts against the sealing ring 9, and the bottom of the PP cotton 22 abuts against the bottom of the inner shell 7. The PP cotton 22 can cover the bottom end of the RO membrane 21, and seawater must pass through the PP cotton 22 and then enter the RO membrane 21 from the bottom end of the RO membrane 21.

[0032] The top cover assembly 3 includes a sealing cover 31 and a pressure cover 32. The pressure cover 32 is threadedly connected to the top of the outer shell 1 and abuts against the top of the inner shell 7. The bottom of the PP cotton 22 abuts against the bottom of the outer shell 1, thereby pressing the inner shell 7 inside the outer shell 1 so that the top of the inner shell 7 is sealed and connected to the outer shell 1; the interior of the pressure cover 32 is provided with a water outlet channel 321 connected to the clean water chamber 6, and the top of the water outlet channel 321 is an opening. The sealing cover 31 is threadedly connected to the top of the pressure cover 32 so that the sealing cover 31 is opened. After removing the sealing cover 31, the water in the clean water chamber 6 can be drunk through the water outlet channel 321, and the waste water in the waste water chamber 11 can be poured out by removing the pressure cover 32, which is convenient to use.

[0033] like Figure 1As shown, there is a gap between the top of the RO membrane 21 and the pressure cover 32, and the wastewater can flow out from the top of the RO membrane 21 to the wastewater chamber 11. The bottom of the RO membrane 21 is in contact with the PP cotton 22, and the seawater can first enter the PP cotton 22 from the periphery, and then enter the bottom of the RO membrane 21 from the bottom of the PP cotton 22; or there is a gap between the bottom of the RO membrane 21 and the PP cotton 22, and the seawater flows into the gap after passing through the PP cotton 22, and then flows in from the bottom of the RO membrane 21. Both of these settings can achieve seawater desalination.

[0034] As a preferred embodiment, an activated carbon layer 10 is provided on the inner wall of the inner shell 7, and the activated carbon layer 10 covers the water holes 8 on the side wall of the inner shell 7. The activated carbon layer 10 can further filter the seawater desalinated by the RO membrane 21, remove odor and harmful substances in the water, improve the water quality, and improve the taste of the water.

[0035] The inner wall of the water outlet channel 321 is radially protruded with a circle of flange 322. When the pressure cover 32 is threadedly connected to the top of the outer shell 1, the flange 322 abuts against the top of the inner shell 7, so that the water outlet channel 321 can be connected to the water purification chamber 6. The interior of the desalination cup is a cup-shaped structure, which is highly applicable and convenient to use.

[0036] As a preferred embodiment, sealing rings 9 are provided between the gland 32 and the outer shell 1 , between the sealing cover 31 and the gland 32 , and between the water outlet channel 321 and the inner shell 7 , so as to achieve a good sealing effect.

[0037] As a preferred embodiment, after the counterweight 5 is provided, the material of the housing 1 may not be metal with high density, so as to reduce the processing cost. In addition, the counterweight 5 may be cylindrical or truncated cone-shaped, and may be used as a base, so as to increase the center of gravity of the desalination cup, so that the desalination cup can stand on the seabed without tipping over, thereby making the water pressure around the RO membrane assembly 2 uniform, and preventing the sand on the seabed from being lifted up and passing through the water hole to affect the RO membrane assembly 2.

[0038] The sealing cover 31 and the pressure cover 32 are both provided with exhaust ports, and the bottoms of the clean water chamber exhaust pipe 4 and the waste water chamber exhaust pipe 12 are respectively plugged and fixed in the exhaust ports on the sealing cover 31 and the pressure cover 32. The clean water chamber exhaust pipe 4 and the waste water chamber exhaust pipe 12 are both slender fiber tubes or food-grade plastic tubes with good flexibility. When not in use, the clean water chamber exhaust pipe 4 and / or the waste water chamber exhaust pipe 12 can be wrapped around the hand for several times and used as a pulling rope to facilitate lifting and carrying the desalination cup; when storage is required, the clean water chamber exhaust pipe 4 and the waste water chamber exhaust pipe 12 can also be wrapped around the top of the sealing cover 31 for several times to reduce the occupied space; when in use, the clean water chamber exhaust pipe 4 and the waste water chamber exhaust pipe 12 need to be straightened so that they can extend out of the sea when the desalination cup sinks.

[0039] Key References Figure 1 and Figure 2 The top of the sealing cover 31 is convexly provided with a carrying ring 311 which is integrally formed with the sealing cover 31 , which is convenient for carrying and has a good carrying feel. The clean water chamber exhaust pipe 4 and the waste water chamber exhaust pipe 12 can be wrapped around the carrying ring 311 .

[0040] Key References Figure 3 and Figure 4 In one embodiment, the shell 1 is a cylindrical structure, so that the desalination cup has a cup-shaped appearance, which is convenient to hold; in another embodiment, the shell 1 is a spherical structure, so that the water pressure of the seawater entering the shell 1 is more uniform. Of course, the shell 1 can also be a container of other shapes, which is not limited here.

[0041] The use process of the utility model is as follows: first, the desalination cup is immersed in seawater, and the desalination cup sinks to the bottom of the sea due to its own gravity. During the sinking process, the seawater passes through the water hole 8 of the outer shell 1, and squeezes the bottom of the RO membrane assembly 2 by its own water pressure, so that it enters from the bottom of the RO membrane assembly 2 for filtration, specifically passing through the PP cotton 22 first, and then entering the RO membrane 21 from the bottom to complete the filtration. The filtered fresh water flows out from the water hole on the side wall of the inner shell 7 into the water purification chamber 6, and the filtered waste water flows out from the RO membrane assembly 2. The top of the clean water chamber 6 flows out from the top of the RO membrane assembly 2 into the waste water chamber 11, and at the same time, the tops of the clean water chamber exhaust pipe 4 and the waste water chamber exhaust pipe 12 always extend out of the sea surface to discharge the air inside the clean water chamber 6 and the waste water chamber 11 respectively, and maintain the atmospheric pressure balance in the clean water chamber 6 and the waste water chamber 11, so that seawater can pass through the RO membrane assembly 2 into the clean water chamber 6, and wastewater can flow into the waste water chamber 11, completing the desalination of seawater; after filtering a part of the seawater, quickly lift the desalination cup out of the sea surface, remove the sealing cover 31, and then you can drink the fresh water in the clean water chamber 6.

[0042] The desalination cup of the utility model sinks by its own gravity, uses the water pressure of seawater to squeeze the RO membrane assembly 2, and arranges a clean water chamber exhaust pipe 4 and a waste water chamber exhaust pipe 12 to respectively exhaust the air inside the clean water chamber 6 and the waste water chamber 11, so as to maintain the atmospheric pressure balance inside the clean water chamber 6 and the waste water chamber 11, so that seawater can pass through the RO membrane assembly 2 and enter the clean water chamber 6, and wastewater can flow out from the top of the RO membrane 21 and enter the waste water chamber 11. Therefore, the utility model does not need to compress seawater by manpower or other power sources, and can make seawater pass through the RO membrane 21 to complete the desalination of seawater, which is convenient and labor-saving to use.

[0043] The above description is only a preferred embodiment of the present utility model and is not a limitation on the design of the present case. Any equivalent changes made based on the key design of the present case shall fall within the protection scope of the present case.

Claims

1. A non-powered seawater desalination cup, characterized by: It comprises an inner shell, an outer shell, an RO membrane assembly and a top cover assembly, wherein the side walls of the inner shell and the outer shell are both provided with a plurality of water holes, the RO membrane assembly is tightly sleeved on the outer periphery of the inner shell and covers the water holes on the side walls of the inner shell, a clean water cavity is formed inside the inner shell, the inner shell and the RO membrane assembly are arranged inside the outer shell, the tops of the inner shell and the outer shell are both sealed and connected with the top cover assembly, an exhaust pipe of the clean water cavity is arranged on the top cover assembly, and the exhaust pipe of the clean water cavity connects the clean water cavity and the outside of the desalination cup; the overall density of the desalination cup is greater than the density of seawater, and the desalination cup automatically sinks in the seawater by its own gravity to realize seawater desalination.

2. The unpowered seawater desalination cup according to claim 1, characterized in that: A water hole is provided at the lower part of the side wall of the shell, a sealing ring is provided between the middle part of the shell and the RO module assembly, a wastewater cavity is formed on the upper part of the sealing ring, and a wastewater cavity exhaust pipe is also provided on the top cover assembly, and the wastewater cavity exhaust pipe communicates with the wastewater cavity and the outside of the desalination cup.

3. The unpowered seawater desalination cup according to claim 2, characterized in that: The RO membrane assembly includes an RO membrane and PP cotton. The RO membrane is in a circular tube shape with upper and lower openings. The inner shell and the PP cotton are both in a cylindrical shape with a closed bottom and an open top. The RO membrane is sleeved on the outer periphery of the inner shell, and the PP cotton is sleeved on the lower part of the inner shell and the RO membrane. The top of the PP cotton abuts against the sealing ring, and the bottom of the PP cotton abuts against the bottom of the inner shell.

4. The unpowered seawater desalination cup according to claim 3, characterized in that: The top cover assembly includes a sealing cover and a pressure cover, the pressure cover is threadedly connected to the top of the outer shell and abuts against the top of the inner shell, and the bottom of the PP cotton abuts against the bottom of the outer shell; a water outlet channel connected to the water purification chamber is opened inside the pressure cover, and the top of the water outlet channel is an opening, and the sealing cover is threadedly connected to the top of the pressure cover to seal the opening.

5. The unpowered seawater desalination cup according to claim 4, characterized in that: A gap is left between the top end of the RO membrane and the pressure cover, and the bottom end of the RO membrane abuts against the PP cotton or a gap is left between the bottom end of the RO membrane and the PP cotton.

6. The unpowered seawater desalination cup according to claim 4, characterized in that: The inner side wall of the water outlet channel is radially protruded with a circle of convex edges. When the pressure cover is threadedly connected to the top of the outer shell, the convex edge abuts against the top of the inner shell. Sealing rings are provided between the pressure cover and the outer shell, between the sealing cover and the pressure cover, and between the water outlet channel and the inner shell.

7. A non-powered seawater desalination cup as claimed in any one of claims 1 to 6, characterized in that: An activated carbon layer is arranged on the inner side wall of the inner shell, and the activated carbon layer covers the water holes on the side wall of the inner shell.

8. The unpowered seawater desalination cup according to claim 4, characterized in that: The sealing cover and the pressure cover are both provided with exhaust ports, and the bottoms of the clean water chamber exhaust pipe and the waste water chamber exhaust pipe are respectively plugged and fixed in the exhaust ports of the sealing cover and the pressure cover.

9. The unpowered seawater desalination cup according to claim 8, characterized in that: The exhaust pipe of the clean water chamber and the exhaust pipe of the waste water chamber are fiber pipes or food-grade plastic pipes.

10. The unpowered seawater desalination cup according to claim 1, characterized in that: The shell is made of metal material, or a counterweight is fixed on the bottom of the shell.

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