Reverse osmosis membrane assembly and water purification equipment
By setting a folded fold on the front of the reverse osmosis diaphragm at the free end of the reverse osmosis diaphragm and glueing and sealing on the back, the problem of glueing the front of the reverse osmosis diaphragm in the prior art destroying the membrane structure, improving the water purification efficiency and service life.
Patent Information
- Application Number
- CN202323271359.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-11-30
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2033-11-30
AI Technical Summary
The front of the reverse osmosis diaphragm of existing water purification equipment destroys the membrane structure and affects the water purification efficiency.
By setting the folded folded portion on the two free ends of the reverse osmosis diaphragm, avoid glueing on the front of the diaphragm and instead glueing on the back seal.
It effectively avoids the damage to the diaphragm structure, improves the water purification efficiency of the reverse osmosis membrane module, and extends the service life.
Smart Images
Figure CN222700080U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of water treatment, and specifically provides a reverse osmosis membrane component and water purification equipment. Background Art
[0002] The common application form of reverse osmosis technology in water treatment is to make a spiral wound reverse osmosis membrane module, also known as a spiral wound reverse osmosis membrane module, which has a central tube with multiple holes and alternately stacked multi-layer reverse osmosis membranes and flow guide nets wound on the central tube. It generally has a cylindrical pressure vessel as a shell, and the central tube is connected to the shell at both ends through connectors.
[0003] In order to continuously improve the water purification effect of the wound reverse osmosis membrane assembly, people have made many improvements to it. Among them, the most common practice in the prior art is: raw water enters from the end face of the membrane assembly, fresh water flows out from the central tube, and concentrated water flows out from the other end face or side of the membrane assembly. In the above-mentioned method of concentrated water flowing out from the other end face or side of the membrane assembly, it is necessary to apply glue on the front of the membrane sheet located at the free end of the membrane assembly to fully or partially seal the side of the membrane assembly. Applying glue on the front of the membrane sheet will cause pollution and damage to the structure of the membrane sheet, affecting the reverse osmosis capacity of the membrane assembly, and further affecting the water purification efficiency of the reverse osmosis membrane assembly.
[0004] Therefore, this field needs a new technical solution to solve the above problems. Utility Model Content
[0005] The utility model aims to solve the above technical problem, that is, to solve the problem that the reverse osmosis membrane of the existing water purification equipment is damaged by glue on the front side of the membrane.
[0006] In a first aspect, the utility model provides a reverse osmosis membrane assembly, comprising a central tube and a reverse osmosis membrane group wound on the central tube, the first end face of the reverse osmosis membrane group having a raw water inlet, the reverse osmosis membrane group comprising at least one reverse osmosis membrane folded in half on the front side, the folded end of the reverse osmosis membrane being fixedly connected to the central tube, both free ends of the reverse osmosis membrane having a folded portion folded toward the front side of the reverse osmosis membrane, the two folded portions being arranged opposite to each other and at least a portion of the two folded portions being sealed and connected.
[0007] When adopting the above technical scheme, the reverse osmosis membrane assembly of the utility model is provided with a folding portion with a front fold at the two free ends of the reverse osmosis membrane, so that when the two free ends of the reverse osmosis membrane are sealed with glue, the two free ends of the reverse osmosis membrane can be sealed with glue on the back side of the reverse osmosis membrane, thereby avoiding damage to the reverse osmosis membrane by gluing on the front side of the reverse osmosis membrane, thereby improving the water purification efficiency of the reverse osmosis membrane assembly.
[0008] In the preferred technical solution of the above reverse osmosis membrane assembly, the second end surface of the reverse osmosis membrane group is completely sealed, a part of the two folded parts are sealed and connected, and the unsealed parts of the two folded parts form a concentrated water outlet.
[0009] When adopting the above technical solution, the utility model completely seals the second end face of the reverse osmosis membrane group, and the concentrate can only flow out from the side of the reverse osmosis membrane group, thereby extending the length of the raw water flow channel, thereby improving the water purification efficiency of the reverse osmosis membrane assembly, and by sealing and connecting a part of the two folded parts, the concentrate outlet can be reduced, thereby increasing the flow rate of the concentrate, making it difficult for impurities to be deposited on the front side of the reverse osmosis membrane, thereby extending the service life of the reverse osmosis membrane assembly.
[0010] In the preferred technical solution of the above reverse osmosis membrane assembly, the first end surface portion of the reverse osmosis membrane group is sealed.
[0011] When adopting the above technical solution, the utility model seals the first end surface portion of the reverse osmosis membrane group to reduce the raw water inlet, thereby increasing the flow rate of the raw water, making it difficult for impurities to deposit on the front side of the reverse osmosis membrane, and extending the service life of the reverse osmosis membrane assembly.
[0012] In the preferred technical solution of the above reverse osmosis membrane assembly, the area of the sealed region of the first end face accounts for 2 / 3 of the total area of the first end face.
[0013] When adopting the above technical solution, the utility model sets the area of the sealed region of the first end face to 2 / 3 of the total area of the first end face, which greatly improves the flow rate of raw water, not only improves the water purification efficiency of the reverse osmosis membrane assembly, but also reduces the deposition of impurities on the front side of the reverse osmosis membrane, thereby extending the service life of the reverse osmosis membrane assembly.
[0014] In a preferred technical solution of the above reverse osmosis membrane assembly, at least a portion of the two folded portions are sealed and connected by a waterproof tape.
[0015] When the above technical solution is adopted, at least a part of the two folding parts of the utility model is sealed and connected by a waterproof tape, which is convenient and simple to operate and has a better sealing effect.
[0016] In a preferred technical solution of the above reverse osmosis membrane assembly, parts of the two folded portions close to the first end surface are sealed and connected.
[0017] When adopting the above technical solution, the utility model sets the two folding sealing connections at the part close to the first end face of the reverse osmosis membrane group, so that the raw water can flow more smoothly on the front side of the reverse osmosis membrane, so that the reverse osmosis membrane assembly can produce more purified water, thereby improving the water purification efficiency of the reverse osmosis membrane assembly.
[0018] In the preferred technical solution of the above reverse osmosis membrane assembly, the reverse osmosis membrane assembly further comprises a concentrate water guide net, and the concentrate water guide net is arranged on the front side of the reverse osmosis membrane.
[0019] When the above technical solution is adopted, the utility model can accelerate the discharge of concentrated water from the concentrated water outlet by arranging a concentrated water guide net on the front side of the reverse osmosis membrane, thereby reducing the pollution to the reverse osmosis membrane.
[0020] In the preferred technical solution of the above reverse osmosis membrane assembly, the reverse osmosis membrane assembly further comprises a pure water guide net, which is arranged on the back of the reverse osmosis membrane sheet, and a first end of the pure water guide net is connected to the central tube.
[0021] When the above technical solution is adopted, the utility model arranges the pure water guide net on the back of the reverse osmosis membrane and connects it to the central tube, so that the pure water can be collected to the central tube and discharged more quickly, thereby improving the water purification efficiency of the reverse osmosis membrane assembly.
[0022] In the preferred technical solution of the above reverse osmosis membrane assembly, the reverse osmosis membrane assembly further comprises a sealing tape, one end of which is connected to the second end of the pure water guide net, and the sealing tape is provided with a water outlet at a position corresponding to the concentrated water outlet.
[0023] When the above technical solution is adopted, the utility model can enhance the sealing effect of the reverse osmosis membrane assembly by providing a sealing tape, and can guide the concentrated water to be discharged from the side of the reverse osmosis membrane assembly by providing a water outlet hole at a position corresponding to the concentrated water outlet of the sealing tape.
[0024] In a second aspect, the utility model further provides a water purification device, which includes the above-mentioned reverse osmosis membrane assembly.
[0025] When adopting the above technical scheme, the water purification equipment of the utility model includes the above reverse osmosis membrane assembly, and thus has the beneficial effects of the above reverse osmosis membrane assembly. Compared with the water purification equipment before the improvement, the water purification equipment of the utility model reduces the damage to the membrane caused by glue on the front side of the reverse osmosis membrane, improves the water purification efficiency of the reverse osmosis membrane assembly, and extends the service life of the reverse osmosis membrane assembly. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:
[0027] Figure 1 It is a structural schematic diagram of the reverse osmosis membrane assembly of the utility model;
[0028] Figure 2 It is a schematic diagram of the structure of the reverse osmosis membrane assembly of the utility model after unfolding;
[0029] Figure 3 It is a schematic diagram of folding the reverse osmosis membrane sheet of the reverse osmosis membrane assembly of the utility model.
[0030] List of reference numerals:
[0031] 1. Center tube;
[0032] 2. Reverse osmosis membrane group; 21. Reverse osmosis membrane; 22. Raw water inlet; 211. Folding part; 21A. Front side; 21B. Back side;
[0033] 3. Waterproof tape;
[0034] 4. Concentrated water diversion net;
[0035] 5. Pure water diversion net;
[0036] 6. Sealing tape; 61. Water outlet. DETAILED DESCRIPTION
[0037] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.
[0038] It should be noted that in the description of the present invention, the terms "inside", "outside", "upper", "lower", "left", "right" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0039] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "set", "connect", and "install" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0040] Based on the problem pointed out in the background technology that the glue applied on the front side of the reverse osmosis membrane of the existing water purification equipment damages the membrane structure, the utility model provides a reverse osmosis membrane assembly and a water purification equipment, which aims to provide a front-folded folded portion at the two free ends of the reverse osmosis membrane, so that when the two free ends of the reverse osmosis membrane are glued and sealed, the two free ends of the reverse osmosis membrane can be sealed by glueing on the back side of the reverse osmosis membrane, thereby avoiding damage to the reverse osmosis membrane due to glue applied on the front side of the reverse osmosis membrane, thereby improving the water purification efficiency of the reverse osmosis membrane assembly.
[0041] Specifically, see first Figures 1 to 3 , Figure 1 It is a structural schematic diagram of the reverse osmosis membrane assembly of the utility model; Figure 2 It is a schematic diagram of the structure of the reverse osmosis membrane assembly of the utility model after unfolding; Figure 3 It is a schematic diagram of folding the reverse osmosis membrane sheet of the reverse osmosis membrane assembly of the utility model.
[0042] like Figures 1 to 3 As shown, the reverse osmosis membrane assembly of the utility model includes a central tube 1 and a reverse osmosis membrane group 2 wound on the central tube 1, the first end face of the reverse osmosis membrane group 2 has a raw water inlet 22, the reverse osmosis membrane group 2 includes at least one reverse osmosis membrane 21 with a front side 21A folded in half, the folded end of the reverse osmosis membrane 21 is fixedly connected to the central tube 1, and both free ends of the reverse osmosis membrane 21 have a folded portion 211 folded toward the front side 21A of the reverse osmosis membrane 21, the two folded portions 211 are arranged opposite to each other and at least a portion of the two folded portions 211 are sealed and connected.
[0043] For example, Figures 1 to 3 As shown, the reverse osmosis membrane assembly of the utility model comprises a central tube 1 and a reverse osmosis membrane group 2 wound on the central tube 1, and a first end surface ( Figure 1 The left end face in the middle) is provided with a raw water inlet 22, and one end of the central tube 1 ( Figure 1 The other end of the central tube 1 ( Figure 1 The reverse osmosis membrane group 2 includes a reverse osmosis membrane, the front side 21A of the reverse osmosis membrane 21 is folded in half, the folded end on the left side of the reverse osmosis membrane 21 is fixedly connected to the central tube 1, and the two free ends on the right side of the reverse osmosis membrane 21 are folded toward the front side 21A of the reverse osmosis membrane 21 to form two corresponding folded parts 211, at least a part of the two folded parts 211 are sealed and connected, and the back side 21B of the reverse osmosis membrane 21 is provided with sealant along the circumferential direction, and the sealant and the central tube 1 are surrounded by a rectangle so that pure water flows toward the central tube 1, and the reverse osmosis membrane 21 is wound on the central tube 1 in a clockwise direction to form a reverse osmosis membrane assembly, and the two back sides 21B of the reverse osmosis membrane 21 are sealed and connected to form a pure water flow channel, and a raw water flow channel is formed between the two front sides 21A of the reverse osmosis membrane 21.
[0044] The working principle of the reverse osmosis membrane assembly of the present invention is as follows: raw water flows in from the raw water inlet 22 of the first end face of the reverse osmosis membrane group 2, and flows along the raw water flow channel between the two front faces 21A of the reverse osmosis membrane 21; pure water penetrates through the reverse osmosis membrane into the pure water flow channel between the two back faces 21B of the reverse osmosis membrane 21; pure water is collected into the central tube 1 along the pure water flow channel and is discharged through the pure water outlet of the central tube 1; concentrated water is discharged through the second end face or side face of the reverse osmosis membrane group 2.
[0045] It should be noted that the present invention does not limit the number of reverse osmosis membranes 21. For example, those skilled in the art may also set the number of reverse osmosis membranes 21 to two or three, etc. Such adjustment and change to the specific number of reverse osmosis membranes 21 does not deviate from the principle and scope of the present invention and should be limited within the protection scope of the present invention.
[0046] It should also be noted that the present invention does not limit the location of the pure water outlet. For example, a person skilled in the art may also set the pure water outlet at the same end of the central tube 1 as the raw water inlet 22, and so on. Such adjustment and change of the specific location of the pure water outlet does not deviate from the principle and scope of the present invention and shall be limited within the protection scope of the present invention.
[0047] It should be further explained that the present invention does not limit the setting position of the concentrate outlet. For example, a person skilled in the art may seal and connect all the two folded parts 211, that is, seal the side of the reverse osmosis membrane group 2, and set the second end face of the reverse osmosis membrane group 2 as the concentrate outlet. Alternatively, the second end face of the reverse osmosis membrane group 2 may be sealed, and the two folded parts 211 may be partially sealed and connected, that is, the unsealed portion may be set as the concentrate outlet, etc. Such adjustments and changes to the specific setting position of the concentrate outlet do not deviate from the principle and scope of the present invention, and should be limited within the protection scope of the present invention.
[0048] Preferably, if Figures 1 to 3 As shown, the second end surface of the reverse osmosis membrane group 2 of the utility model is completely sealed, a part of the two folded parts 211 is sealed and connected, and the part of the two folded parts 211 that is not sealed and connected forms a concentrated water outlet.
[0049] For example, Figures 1 to 3 As shown, the second end surface ( Figure 1 The right end face in the middle) is completely sealed, and the two folded portions 211 close to the first end face ( Figure 2The lower part of the folded part 211 in the middle is sealed and connected, and the part of the folded part 211 that is not sealed and connected forms a concentrated water outlet.
[0050] It should be noted that the present invention does not limit the location of the folding portion 211 to be sealed and connected. For example, those skilled in the art may also seal the portion of the folding portion 211 close to the second end surface ( Figure 2 The upper part of the folding portion 211 in the folding part 210 can be sealed and connected, or the middle part of the folding portion 211 can be sealed and connected, or multiple positions of the folding portion 211 can be sealed and connected at intervals, etc. Correspondingly, the position of the concentrate outlet can be set at the upper end, lower end or middle of the folding portion 211, etc., and the concentrate outlet can be set to 1, 2 or more, etc. at the position of the folding portion 211 that is not sealed and connected. Such adjustments and changes to the specific parts of the sealed connection of the folding portion 211 do not deviate from the principle and scope of the present utility model, and should be limited within the protection scope of the present utility model.
[0051] Preferably, if Figure 2 and Figure 3 As shown, the parts of the two folded portions 211 of the present invention close to the first end surface are sealed and connected.
[0052] That is to say, the parts of the two folded parts 211 close to the raw water inlet 22 are sealed and connected, so that the raw water can flow more smoothly on the front side 21A of the reverse osmosis membrane 21, so that the reverse osmosis membrane assembly can produce more purified water, thereby improving the water purification efficiency of the reverse osmosis membrane assembly.
[0053] Preferably, if Figure 2 and Figure 3 As shown, at least a portion of the two folding portions 211 of the present invention is sealed and connected by a waterproof tape 3 .
[0054] For example, Figure 2 and Figure 3 As shown, the waterproof tape 3 is installed on one of the two folded parts 211 ( Figure 2 The waterproof tape 3 has double-sided adhesiveness, and the two folded portions 211 can be sealed and connected by pressing the two folded portions 211 tightly.
[0055] It should be noted that the present invention does not limit the installation position of the waterproof tape 3. For example, those skilled in the art may also install the waterproof tape 3 on another folding portion 211 ( Figure 2 The above folding portion 211), or, it is installed on two folding portions 211 at the same time, etc. Such adjustment and change of the specific installation position of the waterproof tape 3 does not deviate from the principle and scope of the utility model, and should be limited within the protection scope of the utility model.
[0056] Preferably, if Figure 1 As shown, the first end surface portion of the reverse osmosis membrane group 2 of the present invention is sealed.
[0057] For example, Figure 1 As shown, the left end face of the reverse osmosis membrane group 2 of the present invention is annular, the outer annular portion of the left end face away from the central tube 1 is sealed radially, and the inner annular portion close to the central tube 1 serves as a raw water inlet 22.
[0058] It should be noted that the present invention does not limit the specific position and size of the seal of the first end face portion. For example, those skilled in the art may also seal the inner ring, or seal the ring in segments, etc. Those skilled in the art may set the area of the sealing area to 1 / 3 or 2 / 3 of the total area of the first end face, etc. Such adjustments and changes to the specific position and size of the seal of the first end face portion do not deviate from the principle and scope of the present invention, and should be limited within the protection scope of the present invention.
[0059] Of course, the utility model preferably seals the outer ring of the first end face. After sealing, the raw water inlet 22 is far away from the concentrated water outlet, which extends the length of the raw water flow channel and improves the water purification efficiency of the reverse osmosis membrane assembly.
[0060] Preferably, if Figure 1 As shown, the area of the sealed region of the first end surface of the utility model accounts for 2 / 3 of the total area of the first end surface.
[0061] That is to say, the area of the sealed outer ring accounts for 2 / 3 of the total area of the first end face, and the area of the raw water inlet 22 accounts for 1 / 3 of the total area of the first end face. By reducing the area of the raw water inlet 22, the flow rate of the raw water is correspondingly increased, thereby improving the water purification efficiency of the reverse osmosis membrane assembly, and reducing the deposition of impurities on the front side 21A of the reverse osmosis membrane 21, thereby extending the service life of the reverse osmosis membrane assembly.
[0062] Preferably, if Figure 2 As shown, the reverse osmosis membrane assembly of the present invention further includes a concentrate water guide net 4 , and the concentrate water guide net 4 is arranged on the front side 21A of the reverse osmosis membrane 21 .
[0063] For example, Figure 2 As shown, the concentrate guide net 4 is installed between the two front sides 21A of the reverse osmosis membrane 21 , which can accelerate the discharge of concentrate from the concentrate outlet and reduce the pollution to the reverse osmosis membrane 21 .
[0064] Preferably, if Figure 2As shown, the reverse osmosis membrane assembly of the present invention further comprises a pure water guide net 5 , which is disposed on the back side 21B of the reverse osmosis membrane sheet 21 , and a first end of the pure water guide net 5 is connected to the central tube 1 .
[0065] For example, Figure 2 As shown, the pure water guide net 5 is installed between the two back sides 21B of the reverse osmosis membrane 21, and the left end of the pure water guide net 5 is connected to the central tube 1, which can make the pure water gather into the central tube 1 and be discharged more quickly, thereby improving the water purification efficiency of the reverse osmosis membrane assembly.
[0066] Preferably, if Figure 1 and Figure 2 As shown, the reverse osmosis membrane assembly of the present invention further comprises a sealing tape 6, one end of which is connected to the second end of the pure water guide net 5, and a water outlet hole 61 is provided at a position of the sealing tape 6 corresponding to the concentrated water outlet.
[0067] For example, Figure 1 and Figure 2 As shown, the left end of the sealing tape 6 is connected to the right end of the pure water guide net 5. When the reverse osmosis membrane group 2 is wound on the central tube 1 in a clockwise direction, the pure water guide net 5 can wrap the central tube 1, which is more conducive to the collection of pure water into the central tube 1. The sealing tape 6 seals and wraps the entire reverse osmosis membrane group 2, thereby enhancing the sealing effect of the reverse osmosis membrane assembly. The sealing tape 6 is close to the concentrated water outlet ( Figure 2 The upper part of the sealing tape 6 (in the middle) is provided with a plurality of water outlet holes 61, which can guide the concentrated water to be discharged from the side of the reverse osmosis membrane assembly.
[0068] In a second aspect, the utility model also provides a water purification device, comprising the above-mentioned reverse osmosis membrane assembly.
[0069] Those skilled in the art will appreciate that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present application and form different embodiments. For example, in the claims of the present application, any one of the claimed embodiments may be used in any combination.
[0070] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.
Claims
1. A reverse osmosis membrane assembly, characterized in that: It comprises a central tube and a reverse osmosis membrane group wound on the central tube, wherein the first end face of the reverse osmosis membrane group has a raw water inlet, the reverse osmosis membrane group comprises at least one reverse osmosis membrane folded in front, the folded end of the reverse osmosis membrane is fixedly connected to the central tube, and both free ends of the reverse osmosis membrane have a folded portion folded toward the front of the reverse osmosis membrane, the two folded portions are arranged opposite to each other and at least a part of the two folded portions is sealed and connected; The second end surface of the reverse osmosis membrane group is completely sealed, a part of the two folded parts are sealed and connected, and the part of the two folded parts that are not sealed and connected forms a concentrated water outlet.
2. The reverse osmosis membrane assembly according to claim 1, characterized in that: The first end surface portion of the reverse osmosis membrane group is sealed.
3. The reverse osmosis membrane assembly according to claim 2, characterized in that: The area of the sealed region of the first end surface accounts for 2 / 3 of the total area of the first end surface.
4. The reverse osmosis membrane assembly according to claim 1, characterized in that: At least a portion of the two folded portions are sealed and connected by a waterproof tape.
5. The reverse osmosis membrane assembly according to claim 1, characterized in that: Parts of the two folded portions close to the first end surface are sealed and connected.
6. The reverse osmosis membrane assembly according to claim 1, characterized in that: The reverse osmosis membrane assembly further comprises a concentrated water guide net, and the concentrated water guide net is arranged on the front side of the reverse osmosis membrane.
7. The reverse osmosis membrane assembly according to claim 1, characterized in that: The reverse osmosis membrane assembly further comprises a pure water guide net, which is arranged on the back side of the reverse osmosis membrane sheet, and a first end of the pure water guide net is connected to the central tube.
8. The reverse osmosis membrane assembly according to claim 7, characterized in that: The reverse osmosis membrane assembly further comprises a sealing tape, one end of which is connected to the second end of the pure water guide net, and the sealing tape is provided with a water outlet at a position corresponding to the concentrated water outlet.
9. A water purification device, characterized in that: The invention comprises the reverse osmosis membrane assembly according to any one of claims 1 to 8.