A seawater desalination filtration membrane

Abstract

This invention relates to the field of filtration membrane technology, and in particular to a seawater desalination filtration membrane, comprising a reverse osmosis membrane and two side panels. Each side of the side panel has a connecting groove, and a sealing portion is connected to each of the connecting grooves. Each sealing portion has a limiting groove; the limiting groove includes an insertion groove and a retaining groove. The inner diameter of the insertion groove is smaller than the inner diameter of the retaining groove. The sealing portion prevents gaps from appearing at the connection between the reverse osmosis membrane and the side panel, thus preventing leakage. The sealing portion is made of silicone. When the filtration membrane is wound around the outlet pipe, the sealing portion is located at both ends of the outlet pipe, thereby contacting the end caps to achieve a sealing effect, preventing seawater from contaminating the freshwater in the outlet pipe. An insertion component that mates with the limiting groove is provided on the outer wall of the outlet pipe, forming a sealed structure to prevent seawater from entering the outlet pipe along the folds and gaps at the connection between the filtration membrane and the outer wall of the outlet pipe, thus preventing contamination of the freshwater in the outlet pipe.

Description

Technical Field

[0001] This invention relates to the field of filtration membrane technology, and more particularly to a seawater desalination filtration membrane. Background Technology

[0002] Reverse osmosis, also known as reverse osmosis, is a membrane separation process that uses pressure difference as the driving force to separate the solvent from the solution. When pressure is applied to the feed solution on one side of the reverse osmosis membrane, the solvent will permeate in the opposite direction of natural osmosis when the pressure exceeds its osmotic pressure. Thus, the permeated solvent, i.e., the permeate, is obtained on the low-pressure side of the membrane, while the concentrated solution, i.e., the concentrate, is obtained on the high-pressure side. If reverse osmosis is used to treat seawater, fresh water is obtained on the low-pressure side of the membrane, and brine is obtained on the high-pressure side.

[0003] Existing seawater desalination filtration membranes generally adopt a multi-layer structure composed of several parts, including a microporous membrane, a reverse osmosis membrane, and an antifouling membrane. For example, Chinese patent CN220034141U discloses "a seawater desalination filtration membrane", which, by adding a first frame and support between the reverse osmosis membrane and the microporous membrane, can effectively separate the reverse osmosis membrane and the microporous membrane and form a filtration chamber. When filtering seawater, if the front side of the microporous membrane becomes blocked, seawater enters the filtration chamber through other pores of the microporous membrane and can still pass through the reverse osmosis membrane for filtration. Therefore, it is not easy to form filtration blind spots and the filtration efficiency is higher.

[0004] In practical use, when installing the filter membrane, it is usually wrapped around the outer wall of the water outlet pipe of the equipment. For example, Chinese patent CN208413934U discloses "a water purification component based on reverse osmosis". In this process, due to the lack of a connecting structure, wrinkles and gaps are likely to exist at the connection between the filter membrane and the outer wall of the water outlet pipe. After being pressurized, seawater seeps directly into the water outlet pipe along the end cap and gaps, which not only corrodes the water outlet pipe and reduces its service life, but also results in insufficient filtration. The filtered fresh water is polluted by seawater, resulting in defective products. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies, such as the lack of a connecting structure during filter membrane installation, gaps at the connection between the filter membrane and the outer wall of the outlet pipe, which allow seawater to seep into the outlet pipe. This invention provides a seawater desalination filter membrane.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Design a seawater desalination filtration membrane, including a reverse osmosis membrane and two side membranes. Both sides of the side membranes are provided with connecting grooves, and sealing portions are connected through the connecting grooves. Limiting grooves are provided on the sealing portions.

[0008] The limiting groove includes a plug groove and a card slot, wherein the inner diameter of the plug groove is smaller than the inner diameter of the card slot.

[0009] Furthermore, the sealing part is provided with multiple sealing grooves, which cooperate with the water outlet pipe of the equipment to increase the sealing performance of the sealing part.

[0010] Furthermore, the edge sealing portion is also provided with a shaping component, which fixes the bending angle of the edge sealing portion.

[0011] Furthermore, the shaping component is made of iron wire or aluminum wire.

[0012] Furthermore, the edge sealing part is a silicone edge sealing part, which cooperates with the end cover of the equipment to increase the sealing performance of the edge sealing part, and the slot is a circular slot.

[0013] Furthermore, the connection between the insertion slot and the card slot is rounded.

[0014] Furthermore, two limiting parts that contact the face mask are fixedly provided on the sealing part, and the limiting parts are arc-shaped.

[0015] Furthermore, the centers of the two slots and the circles of the two limiting portions are on the same central axis.

[0016] The seawater desalination filtration membrane proposed in this invention has the following advantages:

[0017] In this invention, a sealing part is provided to prevent gaps from appearing at the connection between the reverse osmosis membrane and the face mask, thus preventing leakage. The sealing part is a silicone sealing part. When the filter membrane is wrapped around the water outlet pipe, the sealing part is set at both ends of the water outlet pipe, thereby contacting the end cap to play a sealing role and preventing seawater from contaminating the fresh water in the water outlet pipe.

[0018] Secondly, in this invention, a plug-in component that cooperates with the limiting groove can be provided on the outer wall of the outlet pipe to form a sealing structure, preventing seawater from entering the outlet pipe along the folds and gaps at the connection between the filter membrane and the outer wall of the outlet pipe, thus contaminating the fresh water in the outlet pipe. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a seawater desalination filtration membrane proposed in this invention;

[0020] Figure 2 This is a schematic diagram of the reverse osmosis membrane of the present invention;

[0021] Figure 3 This is a schematic diagram of the edge sealing part of the present invention.

[0022] In the diagram: 1. Reverse osmosis membrane; 2. Facing membrane; 3. Connecting groove; 4. Sealing part; 41. Limiting part; 5. Limiting groove; 51. Insertion groove; 52. Card groove; 6. Sealing groove; 7. Shaping part. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0024] Reference Figure 1-3 A seawater desalination filtration membrane includes a reverse osmosis membrane 1 and two side membranes 2. Both sides of the side membranes 2 are provided with connecting grooves 3 and are connected to sealing portions 4 through the connecting grooves 3. Each sealing portion 4 is provided with a limiting groove 5.

[0025] The limiting groove 5 includes a plug groove 51 and a card slot 52, wherein the inner diameter of the plug groove 51 is smaller than the inner diameter of the card slot 52.

[0026] In this invention, the sealing part 4 is set to prevent gaps from appearing at the connection between the reverse osmosis membrane 1 and the face film 2, thus preventing leakage. When the filter membrane is wrapped around the water outlet pipe, the sealing part 4 is set at both ends of the water outlet pipe, thereby contacting the end cap to play a sealing role and preventing seawater from contaminating the fresh water in the water outlet pipe. In addition, a plug-in component that cooperates with the limiting groove 5 can be fixedly set on the outer wall of the water outlet pipe and plugged into the limiting groove 5 to form a sealing structure, preventing seawater from entering the water outlet pipe along the folds and gaps at the connection between the filter membrane and the outer wall of the water outlet pipe and contaminating the fresh water in the water outlet pipe. The plug-in component is preferably a silicone strip.

[0027] Furthermore, in this embodiment, the sealing part 4 is also provided with a plurality of sealing grooves 6. The sealing grooves 6 cooperate with the water outlet pipe of the equipment to increase the sealing performance of the sealing part 4. A positioning component that cooperates with the sealing groove 6 can be provided on the outer wall of the water outlet pipe and inserted into the sealing groove to form a sealing structure to improve the sealing performance. The positioning component is preferably a silicone part.

[0028] Furthermore, in this embodiment, the sealing part 4 is also provided with a shaping part 7. The shaping part 7 fixes the bending angle of the sealing part 4. During installation, after the filter membrane is deformed by wrapping around the outer wall of the water outlet pipe, it can maintain the deformed state, thereby fixing the state of the filter membrane and facilitating installation.

[0029] In some embodiments, the shaping component 7 is an iron wire or an aluminum wire, or it may be a copper wire, etc.

[0030] It should be noted that in some embodiments, the sealing part 4 is a silicone sealing part, which contacts the end cover of the equipment to play a sealing role, and the slot 52 is a circular slot, which combines with the plug-in component on the outer wall of the water outlet pipe to play a sealing role, while preventing the limiting slot 5 from separating from the plug-in component.

[0031] In some embodiments, the connection between the insertion slot 51 and the card slot 52 is rounded to better fit the insertion parts on the water outlet pipe, reduce gaps, and increase sealing.

[0032] Furthermore, in this embodiment, two limiting parts 41 that contact the mask 2 are also fixedly provided on the sealing part 4. The limiting parts 41 have an arc-shaped structure, which increases the contact area between the sealing part 4 and the mask 2, increases the friction, and prevents the sealing part 4 from falling off.

[0033] More specifically, in some embodiments, the centers of the two slots 52 and the circles of the two limiting portions 41 are on the same central axis, so as to avoid the edge sealing portion 4 from aging faster after curling and deformation due to the decrease in strength of the edge sealing portion 4 after the limiting slots 5 are opened.

[0034] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A seawater desalination filtration membrane, comprising a reverse osmosis membrane (1) and two side films (2), characterized in that, The face mask (2) has connecting grooves (3) on both sides, and sealing parts (4) are connected through the connecting grooves (3). Limiting grooves (5) are provided on the sealing parts (4). The limiting groove (5) includes a plug groove (51) and a card slot (52), wherein the inner diameter of the plug groove (51) is smaller than the inner diameter of the card slot (52); The sealing part (4) is also provided with multiple sealing grooves (6), which cooperate with the water outlet pipe of the equipment to increase the sealing performance of the sealing part (4); The edge sealing part (4) is also provided with a shaping part (7), which fixes the bending angle of the edge sealing part (4).

2. The seawater desalination filtration membrane according to claim 1, characterized in that: The shaping component (7) is made of iron wire or aluminum wire.

3. The seawater desalination filtration membrane according to claim 1, characterized in that: The edge sealing part (4) is a silicone edge sealing part. The edge sealing part (4) cooperates with the equipment end cover to increase the sealing performance of the edge sealing part (4). The slot (52) is a circular slot.

4. The seawater desalination filtration membrane according to claim 1, characterized in that: The connection between the insertion slot (51) and the card slot (52) is rounded.

5. The seawater desalination filtration membrane according to claim 1, characterized in that: The sealing part (4) is also fixedly provided with two limiting parts (41) that contact the face mask (2), and the limiting parts (41) are arc-shaped.

6. The seawater desalination filtration membrane according to claim 5, characterized in that: The centers of the two slots (52) and the circles of the two limiting parts (41) are on the same central axis.

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