Scale blocking structure for reverse osmosis membrane

Abstract

The utility model discloses a scale blocking structure for a reverse osmosis membrane, which relates to the technical field of reverse osmosis membranes, and comprises a central pipe and a water outlet end cover, the outer side of the central pipe used for conveying clear water is sleeved with a plurality of layers of reverse osmosis membranes, a water inlet grid is adhered between every two layers of reverse osmosis membranes, and the plurality of layers of reverse osmosis membranes and the central pipe are arranged in a concentric circle; according to the reverse osmosis membrane, sewage firstly passes through the blocking end cover, the blocking end cover can block impurities with large sizes in the sewage, meanwhile, the blocking end cover also plays a role in supporting the water passing pipe, and meanwhile, the reverse osmosis membrane can be connected with other parts; after entering the water pipe, sewage sequentially passes through the first-stage blocking net, the second-stage blocking net and the third-stage blocking net, and the diameters of filtering holes of the third-stage blocking net are sequentially reduced, so that scale doped in the sewage can be filtered step by step, and the content of the scale doped in the sewage entering the multi-layer reverse osmosis membrane is greatly reduced; and the probability that the reverse osmosis membrane is blocked by incrustation scale is effectively reduced.

Description

Technical Field

[0001] The utility model specifically relates to the technical field of reverse osmosis membranes, in particular to a scale blocking structure for reverse osmosis membranes. Background Art

[0002] Reverse osmosis membrane is an artificial semipermeable membrane with certain characteristics made by simulating biological semipermeable membrane. It is the core component of reverse osmosis technology. The principle of reverse osmosis technology is to separate these substances and water under the action of higher osmotic pressure than the solution, based on the fact that other substances cannot pass through the semipermeable membrane. The pore size of the reverse osmosis membrane is very small, so it can effectively remove dissolved salts, colloids, microorganisms, organic matter, etc. in water. The system has the advantages of good water quality, low energy consumption, no pollution, simple process and easy operation.

[0003] Chinese patent publication number CN 205650090 U discloses a reverse osmosis membrane shell assembly, the technical solution of which is as follows: comprising a reverse osmosis membrane shell and an end cover, the end cover comprising a plug inserted into the reverse osmosis membrane shell and a flange abutting against the end surface of the reverse osmosis membrane shell, a card slot is provided on the outer circumferential surface of the plug, and a card block capable of being inserted into the card slot is slidably provided on the reverse osmosis membrane shell;

[0004] Although the above-mentioned reverse osmosis membrane has a simplified structure and makes the installation process more convenient, its working principle has not changed. It still uses the reverse osmosis membrane and the central tube to filter and purify the sewage. However, in the process of purifying the sewage using the osmosis principle, part of the scale mixed in the sewage will enter the sewage discharge pipe with the water flow, and part of it will remain between the multiple layers of reverse osmosis membranes. As more and more scale accumulates between the multiple layers of reverse osmosis membranes, these scales will block the reverse osmosis membranes, resulting in the inability of sewage to flow normally between the multiple layers of reverse osmosis membranes, and will also cause the osmosis effect of the reverse osmosis membrane to decrease. The former will cause the sewage to be retained in the reverse osmosis membrane and increase the pressure inside the reverse osmosis membrane. When the pressure exceeds the critical value, the reverse osmosis membrane will be damaged, and the latter will cause the osmosis purification effect of the reverse osmosis membrane to decrease. Utility Model Content

[0005] The purpose of the utility model is to provide a scale barrier structure for a reverse osmosis membrane. Before sewage enters the multi-layer reverse osmosis membrane, it will first pass through a plurality of barrier nets, which can filter out most of the scale in the sewage. The water pipes where the plurality of barrier nets are located are easy to disassemble, convenient for cleaning and maintenance, so as to solve the technical problems raised by the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A scale blocking structure for a reverse osmosis membrane comprises a central tube and a water outlet end cover, wherein a plurality of reverse osmosis membranes are sleeved on the outer side of the central tube for conveying clean water, and a water inlet grid is bonded between each layer of the reverse osmosis membranes, and the plurality of reverse osmosis membranes and the central tube are arranged in a concentric circle;

[0008] The middle of the water outlet end cover at one end of the central tube is fixedly connected to the central tube; the end of the central tube away from the water outlet end cover is fixedly connected to the water inlet end cover;

[0009] The side of the water inlet end cover away from the water outlet end cover is provided with a third-level blocking net, the side of the third-level blocking net away from the water inlet end cover is provided with a second-level blocking net, and the side of the second-level blocking net away from the third-level blocking net is provided with a first-level blocking net.

[0010] As a further technical solution of the utility model, the water outlet end cover is arranged concentrically with the central tube and the water inlet end cover, and a plurality of support plates are evenly arranged on the water outlet end cover and the water inlet end cover.

[0011] As a further technical solution of the utility model, the outer side of the outermost reverse osmosis membrane in the multi-layer reverse osmosis membrane is sleeved with a fiberglass layer, which is circular and has two ends fixedly connected to the outer sides of the water outlet end cover and the water inlet end cover respectively.

[0012] As a further technical solution of the utility model, the three-level barrier net, the two-level barrier net and the one-level barrier net are all circular, and the spacing between the three-level barrier net, the two-level barrier net and the one-level barrier net is the same; the diameter of the filter hole on the three-level barrier net is smaller than the diameter of the filter hole of the two-level barrier net, and the diameter of the filter hole of the two-level barrier net is smaller than the diameter of the filter hole of the one-level barrier net.

[0013] As a further technical solution of the utility model, the third-level barrier net, the second-level barrier net and the first-level barrier net are all located on the inner side of the water pipe and are fixedly connected to the inner wall of the water pipe.

[0014] As a further technical solution of the utility model, one end of the water pipe away from the three-level blocking net is fixedly connected to a blocking end cover, and a plurality of support plates are evenly arranged on the blocking end cover; one end of the water pipe away from the blocking end cover is socketed with a sealing ring, and one end of the sealing ring away from the water pipe is socketed with the water inlet end cover.

[0015] As a further technical solution of the utility model, the cross section of the sealing ring is an I-shape, and both ends of the sealing ring are fixedly connected to the water inlet end cover and the water pipe by a plurality of bolts.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. In the utility model, when the sewage is used, it first enters the water pipe. In the process of entering the water pipe, the sewage first passes through the blocking end cover, which can block the larger debris in the sewage. At the same time, the blocking end cover also plays a role in supporting the water pipe, and can connect the reverse osmosis membrane with other components; after the sewage enters the water pipe, it passes through the primary blocking net, the secondary blocking net and the tertiary blocking net in sequence. The diameter of the filter holes of the tertiary blocking net is reduced in sequence, and the scale mixed in the sewage can be filtered out step by step, thereby ensuring that the content of scale mixed in the sewage entering the multi-layer reverse osmosis membrane is greatly reduced, effectively reducing the probability of the reverse osmosis membrane being blocked by scale, extending the service life of the reverse osmosis membrane, and also ensuring the efficiency of the reverse osmosis membrane in filtering clean water;

[0018] 2. In the utility model, the sealing collar serves to connect the water pipe and the water inlet end cover. The sealing collar is in an I-shape, and the parts where the water pipe and the water inlet end cover are connected to the sealing collar are all located in the groove of the sealing collar, so that the sealing collar can not only connect the water pipe and the water inlet end cover, but also prevent the sewage in the water pipe and the water inlet end cover from leaking from the sealing collar, thereby ensuring the sealing of the connection between the water pipe and the water inlet end cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0020] Figure 2 This utility model Figure 1 Another perspective of the picture.

[0021] Figure 3 This utility model Figure 1 main view.

[0022] Figure 4 This utility model Figure 3 AA section view.

[0023] Figure 5 This utility model Figure 1 Schematic diagram of the internal structure.

[0024] Figure 6 This utility model Figure 5 A partial enlarged view of .

[0025] In the figure: 1-central tube, 2-water inlet hole, 3-reverse osmosis membrane, 4-glass fiber reinforced plastic layer, 5-water outlet end cover, 6-water inlet end cover, 7-sealing ring, 8-water pipe, 9-third-level barrier net, 10-second-level barrier net, 11-first-level barrier net, 12-barrier end cover. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-6 In the embodiment of the utility model, a scale blocking structure for a reverse osmosis membrane comprises a central tube 1 and a water outlet end cover 5, a multi-layer reverse osmosis membrane 3 is sleeved on the outer side of the central tube 1 for conveying clean water, and a water inlet grid is bonded between each layer of the reverse osmosis membrane 3, and the multi-layer reverse osmosis membrane 3 is arranged concentrically with the central tube 1;

[0028] The middle of the water outlet end cover 5 located at one end of the central tube 1 is fixedly connected to the central tube 1; the end of the central tube 1 away from the water outlet end cover 5 is fixedly connected to the water inlet end cover 6;

[0029] The side of the water inlet end cover 6 away from the water outlet end cover 5 is provided with a third-level blocking net 9, the side of the third-level blocking net 9 away from the water inlet end cover 6 is provided with a second-level blocking net 10, and the side of the second-level blocking net 10 away from the third-level blocking net 9 is provided with a first-level blocking net 11;

[0030] The outlet end cover 5 is arranged concentrically with the central tube 1 and the inlet end cover 6, and a plurality of support plates are evenly arranged on the outlet end cover 5 and the inlet end cover 6;

[0031] The outer side of the outermost reverse osmosis membrane 3 in the multi-layer reverse osmosis membrane 3 is sleeved with a glass fiber reinforced plastic layer 4, which is circular, and the two ends of the glass fiber reinforced plastic layer 4 are fixedly connected to the outer sides of the water outlet end cover 5 and the water inlet end cover 6 respectively.

[0032] By adopting the above technical solution, when in use, the sewage first enters the water pipe 8. In the process of entering the water pipe 8, the sewage first passes through the blocking end cover 12. The blocking end cover 12 can block larger debris in the sewage. At the same time, the blocking end cover 12 also plays a role in supporting the water pipe 8, and at the same time, the reverse osmosis membrane can be connected with other components; after the sewage enters the water pipe 8, it passes through the first-level blocking net 11, the second-level blocking net 10 and the third-level blocking net 9 in turn. The diameter of the filter holes of the third-level blocking net is reduced in turn, and the scale mixed in the sewage can be filtered out step by step, thereby ensuring that the scale content mixed in the sewage entering the multi-layer reverse osmosis membrane 3 is greatly reduced, effectively reducing the probability of the reverse osmosis membrane 3 being blocked by scale, extending the service life of the reverse osmosis membrane 3, and also ensuring the efficiency of the reverse osmosis membrane 3 in filtering clean water.

[0033] In this embodiment, the three-level blocking net 9, the two-level blocking net 10 and the one-level blocking net 11 are all circular, and the spacing between the three-level blocking net 9, the two-level blocking net 10 and the one-level blocking net 11 is the same; the diameter of the filter hole on the three-level blocking net 9 is smaller than the diameter of the filter hole of the two-level blocking net 10, and the diameter of the filter hole of the two-level blocking net 10 is smaller than the diameter of the filter hole of the one-level blocking net 11;

[0034] The third-level barrier net 9, the second-level barrier net 10 and the first-level barrier net 11 are all located inside the water pipe 8 and are fixedly connected to the inner wall of the water pipe 8;

[0035] The end of the water pipe 8 away from the third-level blocking net 9 is fixedly connected to the blocking end cover 12, and a plurality of support plates are evenly arranged on the blocking end cover 12; the end of the water pipe 8 away from the blocking end cover 12 is sleeved with the sealing collar 7, and the end of the sealing collar 7 away from the water pipe 8 is sleeved with the water inlet end cover 6;

[0036] The cross section of the sealing collar 7 is an I-shape, and both ends of the sealing collar 7 are fixedly connected to the water inlet end cover 6 and the water pipe 8 respectively by a plurality of bolts.

[0037] By adopting the above technical solution, the sealing ring 7 plays the role of connecting the water pipe 8 and the water inlet end cover 6. The sealing ring 7 is in an I-shape, and the parts where the water pipe 8 and the water inlet end cover 6 are connected to the sealing ring 7 are all located in the groove of the sealing ring 7, so that the sealing ring 7 can not only connect the water pipe 8 and the water inlet end cover 6, but also prevent the sewage in the water pipe 8 and the water inlet end cover 6 from leaking from the sealing ring 7, thereby ensuring the sealing of the connection between the water pipe 8 and the water inlet end cover 6.

[0038] The working principle of the utility model is as follows: when in use, the sewage first enters the water pipe 8, and in the process of entering the water pipe 8, the sewage first passes through the blocking end cover 12, and the blocking end cover 12 can block the larger debris in the sewage, and at the same time, the blocking end cover 12 also plays the role of supporting the water pipe 8, and at the same time, the reverse osmosis membrane can be connected with other components; after the sewage enters the water pipe 8, it passes through the primary blocking net 11, the secondary blocking net 10 and the tertiary blocking net 9 in sequence, and the diameter of the filter holes of the three-stage blocking net is reduced in sequence, which can filter out the scale mixed in the sewage step by step, thereby ensuring that the content of scale mixed in the sewage entering the multi-layer reverse osmosis membrane 3 is greatly reduced, effectively reducing the probability of the reverse osmosis membrane 3 being blocked by scale, extending the service life of the reverse osmosis membrane 3, and also ensuring the efficiency of the reverse osmosis membrane 3 in filtering clean water;

[0039] The sealing collar 7 serves to connect the water pipe 8 and the water inlet end cover 6. The sealing collar 7 is in an I-shape, and the parts where the water pipe 8 and the water inlet end cover 6 are connected to the sealing collar 7 are all located in the groove of the sealing collar 7, so that the sealing collar 7 can not only connect the water pipe 8 and the water inlet end cover 6, but also prevent the sewage in the water pipe 8 and the water inlet end cover 6 from leaking from the sealing collar 7, thereby ensuring the sealing of the connection between the water pipe 8 and the water inlet end cover 6.

[0040] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A scale blocking structure for a reverse osmosis membrane, characterized in that: include A central tube (1) for conveying clean water, wherein the outer side of the central tube (1) is sleeved with a plurality of reverse osmosis membranes (3), and a water inlet grid is bonded between each layer of the reverse osmosis membranes (3), and the plurality of reverse osmosis membranes (3) and the central tube (1) are arranged in a concentric circle; A water outlet end cover (5), the middle of the water outlet end cover (5) located at one end of the central tube (1) is fixedly connected to the central tube (1); an end of the central tube (1) away from the water outlet end cover (5) is fixedly connected to a water inlet end cover (6); A third-level blocking net (9) is provided on the side of the water inlet end cover (6) away from the water outlet end cover (5), a second-level blocking net (10) is provided on the side of the third-level blocking net (9) away from the water inlet end cover (6), and a first-level blocking net (11) is provided on the side of the second-level blocking net (10) away from the third-level blocking net (9).

2. The scale blocking structure for reverse osmosis membrane according to claim 1, characterized in that: The water outlet end cover (5) is arranged concentrically with the central tube (1) and the water inlet end cover (6), and a plurality of support plates are evenly arranged on the water outlet end cover (5) and the water inlet end cover (6).

3. The scale blocking structure for reverse osmosis membrane according to claim 2, characterized in that: The outer side of the outermost reverse osmosis membrane (3) in the multi-layer reverse osmosis membrane (3) is sleeved with a glass fiber reinforced plastic layer (4), the glass fiber reinforced plastic layer (4) is circular, and the two ends of the glass fiber reinforced plastic layer (4) are respectively fixedly connected to the outer sides of the water outlet end cover (5) and the water inlet end cover (6).

4. The scale blocking structure for reverse osmosis membrane according to claim 3, characterized in that: The three-level blocking net (9), the two-level blocking net (10) and the one-level blocking net (11) are all circular, and the spacing between the three-level blocking net (9), the two-level blocking net (10) and the one-level blocking net (11) is the same; the diameter of the filter hole on the three-level blocking net (9) is smaller than the diameter of the filter hole of the two-level blocking net (10), and the diameter of the filter hole of the two-level blocking net (10) is smaller than the diameter of the filter hole of the one-level blocking net (11).

5. The scale blocking structure for reverse osmosis membrane according to claim 4, characterized in that: The third-level barrier net (9), the second-level barrier net (10) and the first-level barrier net (11) are all located on the inner side of the water pipe (8) and are fixedly connected to the inner wall of the water pipe (8).

6. The scale blocking structure for reverse osmosis membrane according to claim 5, characterized in that: One end of the water pipe (8) away from the third-level blocking net (9) is fixedly connected to a blocking end cover (12), and a plurality of support plates are evenly arranged on the blocking end cover (12); one end of the water pipe (8) away from the blocking end cover (12) is sleeved with a sealing ring (7), and one end of the sealing ring (7) away from the water pipe (8) is sleeved with a water inlet end cover (6).

7. The scale blocking structure for reverse osmosis membrane according to claim 6, characterized in that: The cross section of the sealing collar (7) is an I-shape, and the two ends of the sealing collar (7) are fixedly connected to the water inlet end cover (6) and the water pipe (8) respectively by a plurality of bolts.

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