Reverse osmosis membrane group

Abstract

The utility model discloses a reverse osmosis membrane module which comprises a shell, an end cover is detachably mounted at the top of the shell, a water inlet pipe is arranged in the middle of the end cover, and a fresh water outlet pipe and a concentrated water outlet pipe are arranged at the bottom of the shell; a central pipe is arranged in the middle of the shell, a filtering assembly is arranged on the outer side of the central pipe, a retainer for limiting the filtering assembly is arranged in the shell, and the outer side of the retainer is sleeved with a limiting ring and a sealing piece; the filtering assembly is composed of a first permeable membrane, a grid filtering layer, a second permeable membrane and a grid separating layer, the first permeable membrane, the grid filtering layer, the second permeable membrane and the grid separating layer are sequentially attached to one another from inside to outside, and the first permeable membrane, the grid filtering layer, the second permeable membrane and the grid separating layer are wound on the central pipe after being attached to one another. According to the utility model, the limiting ring and the sealing element ensure the sealing effect of the filtering assembly and the shell, and water is prevented from being directly discharged without treatment; the filtering effect is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of reverse osmosis membranes, in particular to a reverse osmosis membrane group. Background Art

[0002] Reverse osmosis technology works by separating substances from water at a pressure higher than the solution's osmotic pressure, based on the inability of other substances to pass through a semipermeable membrane. The reverse osmosis membrane's very small pore size effectively removes dissolved salts, colloids, microorganisms, and organic matter from water. The system offers advantages such as high water quality, low energy consumption, zero pollution, simple process, and easy operation.

[0003] The sealing performance between the filter assembly and the shell of the existing reverse osmosis membrane group is poor, which results in some liquids being unable to be filtered, resulting in poor filtering effect. Therefore, we propose a reverse osmosis membrane group. Utility Model Content

[0004] The purpose of the utility model is to provide a reverse osmosis membrane group to solve the problems in the prior art.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a reverse osmosis membrane group, comprising a shell, a top of which is detachably mounted an end cap, a middle portion of which is provided with a water inlet pipe, and a bottom portion of which is provided with a fresh water outlet pipe and a concentrated water outlet pipe; a middle portion of the shell is provided with a center tube, an outer side of the center tube is provided with a filter assembly, a retaining frame for limiting the filter assembly is provided inside the shell, and a limit ring and a seal are sleeved on the outer side of the retaining frame; the filter assembly is composed of a first permeable membrane, a grid filter layer, a second permeable membrane and a grid separation layer, the first permeable membrane, the grid filter layer, the second permeable membrane and the grid separation layer being sequentially bonded from the inside to the outside, and the first permeable membrane, the grid filter layer, the second permeable membrane and the grid separation layer being bonded and wound around the center tube.

[0006] Preferably, a partition is provided inside the central tube, a plurality of through holes are provided at equal intervals below the partition in the central tube, and a notch is provided at the top of the central tube.

[0007] Preferably, a slot is provided at the bottom of the central tube, a sealing ring is installed at the slot of the central tube, and the bottom of the central tube is connected to the fresh water outlet pipe.

[0008] Preferably, the limiting ring comprises a lower limiting ring and an upper limiting ring, and the inner diameter of the lower limiting ring is smaller than the inner diameter of the upper limiting ring.

[0009] Preferably, the seal includes a lower sealing part and an upper sealing part, the lower sealing part and the upper sealing part are an integrated structure, the seal is a funnel-shaped structure, the upper sealing part is located at the lower sealing part and a groove is provided; the upper sealing part is located on the inner side of the upper limiting ring.

[0010] Preferably, a threaded head is provided on the top of the shell, the end cover and the shell are connected by threads, and a sealing gasket is provided between the end cover and the shell.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. The limiting ring includes a lower limiting ring and an upper limiting ring. The inner diameter of the lower limiting ring is smaller than that of the upper limiting ring. The sealing member includes a lower sealing portion and an upper sealing portion. The lower sealing portion and the upper sealing portion are an integrated structure. The sealing member is a funnel-shaped structure. The upper sealing portion is located at the lower sealing portion and has a groove. The upper sealing portion is located on the inner side of the upper limiting ring. The limiting ring and the sealing member ensure the sealing effect between the filter assembly and the outer shell, preventing water from being discharged directly without treatment, and ensuring the filtering effect.

[0013] 2. The first permeable membrane, mesh filter layer, second permeable membrane and mesh separation layer are laminated and wound around the central tube. The first permeable membrane, mesh filter layer, second permeable membrane and mesh separation layer improve the filtration effect. Compared with a single permeable membrane, the filtration effect of this application is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the utility model when the outer shell is removed;

[0017] Figure 3 This is a schematic diagram of the structure of the filter assembly and the central tube of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the utility model when the end cover is removed;

[0019] Figure 5 This is a structural diagram of the central tube of the utility model;

[0020] Figure 6 It is a cross-sectional view of the center tube of the utility model;

[0021] Figure 7This is a schematic structural diagram of the limit ring and seal of the utility model;

[0022] Figure 8 This utility model Figure 7 sectional view of

[0023] Figure 9 It is a structural diagram of the filter assembly of the utility model.

[0024] In the figure: 1. outer shell; 2. end cover; 3. water inlet pipe; 4. fresh water outlet pipe; 5. concentrated water outlet pipe; 6. limiting ring; 7. sealing element; 8. retaining frame; 9. filter assembly; 10. center tube; 11. threaded head; 12. sealing ring; 61. lower limiting ring; 62. upper limiting ring; 71. lower sealing part; 72. upper sealing part; 73. groove; 91. first permeable membrane; 92. mesh filter layer; 93. second permeable membrane; 94. mesh separation layer; 101. slot; 102. through hole; 103. notch; 104. partition. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the utility model for which protection is claimed, but merely represents selected embodiments of the present invention.

[0026] See also Figure 1-4 and Figure 9In the embodiment of the present utility model, a reverse osmosis membrane group includes a shell 1, an end cover 2 is detachably installed on the top of the shell 1, a threaded head 11 is provided on the top of the shell 1, the end cover 2 and the shell 1 are connected by threads, and a sealing gasket is provided between the end cover 2 and the shell 1; a water inlet pipe 3 is provided in the middle of the end cover 2, and a fresh water outlet pipe 4 and a concentrated water outlet pipe 5 are provided at the bottom of the shell 1; a central tube 10 is provided in the middle of the shell 1, a filter assembly 9 is provided on the outside of the central tube 10, a retaining frame 8 for limiting the filter assembly 9 is provided in the shell 1, and a limiting ring 6 and a sealing member 7 are sleeved on the outside of the retaining frame 8. Liquid is added through the water inlet pipe 3, and the filter assembly 9 is removed through the filter assembly 9. After treatment by the filter assembly 9, the treated fresh water is discharged through the fresh water outlet pipe 4, and the treated concentrated water is discharged through the concentrated water outlet pipe 5; the filter assembly 9 is composed of a first permeable membrane 91, a mesh filter layer 92, a second permeable membrane 93 and a mesh separation layer 94. The first permeable membrane 91, the mesh filter layer 92, the second permeable membrane 93 and the mesh separation layer 94 are sequentially bonded from the inside to the outside. The first permeable membrane 91, the mesh filter layer 92, the second permeable membrane 93 and the mesh separation layer 94 are bonded and then wound around the central tube 10. The first permeable membrane 91, the mesh filter layer 92, the second permeable membrane 93 and the mesh separation layer 94 improve the filtering effect. Compared with a single permeable membrane, the filtering effect of the present application is better.

[0027] like Figure 5 and 6 ; A partition 104 is provided inside the central tube 10. The setting of the partition ensures that the through hole 102 is at a sufficient distance from the upper part to ensure that the water can be fully filtered. The central tube 10 is located below the partition 104 and has multiple through holes 102 at equal intervals. The through holes 102 are used to introduce the filtered fresh water into the central tube 10 and into the fresh water outlet pipe 4. A notch 103 is provided at the top of the central tube 10; a slot 101 is provided at the bottom of the central tube 10. A sealing ring 12 is installed at the slot 101 of the central tube 10, which improves the sealing performance of the connection between the central tube 10 and the fresh water outlet pipe 4. The bottom of the central tube 10 is connected to the fresh water outlet pipe 4.

[0028] like Figure 7 and 8 ; The limiting ring 6 includes a lower limiting ring 61 and an upper limiting ring 62, and the inner diameter of the lower limiting ring 61 is smaller than the inner diameter of the upper limiting ring 62; the sealing member 7 includes a lower sealing portion 71 and an upper sealing portion 72, and the lower sealing portion 71 and the upper sealing portion 72 are an integrated structure. The sealing member 7 is a funnel-shaped structure, and the upper sealing portion 72 is located at the lower sealing portion 71 and is provided with a groove 73; the upper sealing portion 72 is located on the inner side of the upper limiting ring 62; the limiting ring 6 and the sealing member 7 ensure the sealing effect of the filter assembly 9 and the outer shell 1, and avoid the water being directly discharged without treatment, thereby ensuring the filtering effect.

[0029] The working principle of the utility model is: liquid is added through the water inlet pipe 3, after being processed by the filter component 9, the treated fresh water is discharged through the fresh water outlet pipe 4, and the treated concentrated water is discharged through the concentrated water outlet pipe 5.

[0030] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A reverse osmosis membrane assembly, comprising a housing (1), characterized in that: The top of the housing (1) is detachably mounted with an end cover (2), the middle of the end cover (2) is provided with a water inlet pipe (3), and the bottom of the housing (1) is provided with a fresh water outlet pipe (4) and a concentrated water outlet pipe (5); the middle of the housing (1) is provided with a central tube (10), the outer side of the central tube (10) is provided with a filter assembly (9), and the housing (1) is provided with a retaining frame (8) for limiting the filter assembly (9), and the outer side of the retaining frame (8) is provided with a limiting ring (6). and a sealing member (7); the filter assembly (9) is composed of a first permeable membrane (91), a mesh filter layer (92), a second permeable membrane (93) and a mesh separation layer (94); the first permeable membrane (91), the mesh filter layer (92), the second permeable membrane (93) and the mesh separation layer (94) are sequentially attached from the inside to the outside; and the first permeable membrane (91), the mesh filter layer (92), the second permeable membrane (93) and the mesh separation layer (94) are attached and then wound on the central tube (10).

2. A reverse osmosis membrane assembly according to claim 1, characterized in that: A partition (104) is provided inside the central tube (10), a plurality of through holes (102) are provided at equal intervals below the partition (104) in the central tube (10), and a notch (103) is provided at the top of the central tube (10).

3. A reverse osmosis membrane group according to claim 2, characterized in that: A slot (101) is provided at the bottom of the central tube (10), a sealing ring (12) is installed at the slot (101) of the central tube (10), and the bottom of the central tube (10) is connected to the fresh water outlet pipe (4).

4. A reverse osmosis membrane group according to claim 1, characterized in that: The limiting ring (6) comprises a lower limiting ring (61) and an upper limiting ring (62), and the inner diameter of the lower limiting ring (61) is smaller than the inner diameter of the upper limiting ring (62).

5. A reverse osmosis membrane assembly according to claim 4, characterized in that: The sealing member (7) comprises a lower sealing portion (71) and an upper sealing portion (72), wherein the lower sealing portion (71) and the upper sealing portion (72) are an integrated structure. The sealing member (7) is a funnel-shaped structure, and the upper sealing portion (72) is located at the lower sealing portion (71) and is provided with a groove (73); the upper sealing portion (72) is located on the inner side of the upper limiting ring (62).

6. A reverse osmosis membrane assembly according to claim 1, characterized in that: A threaded head (11) is provided on the top of the shell (1), the end cover (2) and the shell (1) are connected via threads, and a sealing gasket is provided between the end cover (2) and the shell (1).

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