Lateral flow membrane assembly and water purification equipment with same

Abstract

The utility model provides a side flow membrane assembly and water purification equipment with the same, and belongs to the field of water purification equipment, the side flow membrane assembly comprises a second membrane unit, a first membrane unit and a central pipe, the second membrane unit and the first membrane unit are wound on the central pipe, a first wastewater outlet and a concentrated water inlet which are communicated are formed in the first raw water side of the second membrane unit, and a second wastewater outlet and a concentrated water inlet are formed in the second raw water side of the second membrane unit; the second raw water side of the first membrane unit is provided with a concentrated water outlet and a second raw water inlet which are communicated with each other, and the concentrated water outlet is communicated with the concentrated water inlet. The central pipe comprises a first chamber for collecting purified water produced by the second membrane unit and the first membrane unit and a second chamber for collecting wastewater produced by the second membrane unit, and the second chamber is communicated with the first wastewater outlet. According to the technical scheme, the two sections of membrane units are connected in series and are rolled on the same central pipe, two sections of side flow channels can be connected in series, only two sealing points are arranged, and the volume and the qualified rate of a filter element can be optimized according to the technical scheme.

Description

Technical Field

[0001] The utility model belongs to the field of water purification equipment, and in particular relates to a lateral flow membrane component and water purification equipment having the same. Background Art

[0002] In existing technologies, raw water can be filtered through membrane filters to produce drinking water that meets the required standards. However, improving the recovery rate is a hot topic for researchers in this field. Furthermore, for optimal application, other factors must be considered, such as size, ease of installation, and pollution resistance.

[0003] A membrane element and a filter element are currently disclosed (patent application number: CN201721046780.9), which include: a first filter assembly, the first filter assembly includes a first central tube and a first membrane unit rolled on the outside of the first central tube; a second filter assembly, the second filter assembly includes a second central tube, a second membrane unit rolled on the outside of the second central tube, the first filter assembly is arranged on the inner side of the second central tube, the second central tube is provided with a second pure water guide channel connected to the pure water outlet of the second membrane unit, and the second pure water guide channel is isolated from the inner side of the second central tube; the wastewater outlet of the second membrane unit is connected to the raw water inlet of the first membrane unit.

[0004] This public solution connects two independent side-flow membrane modules in series, which improves the desalination rate to a certain extent. However, the solution includes two central tubes, 7 sealing points, two independent raw water areas, and filtration areas. Compared with traditional membrane filter elements, the filter element volume and pass rate are not ideal. Utility Model Content

[0005] The present application provides a lateral flow membrane assembly and a water purification device having the same, aiming to solve the problem of unsatisfactory filter element volume and qualified rate of the above-mentioned membrane elements.

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

[0007] A lateral flow membrane assembly comprises a second membrane unit, a first membrane unit and a central tube, the second membrane unit and the first membrane unit are wound around the central tube, the first raw water side of the second membrane unit is provided with a connected first wastewater outlet and a concentrated water inlet, the second raw water side of the first membrane unit is provided with a connected concentrated water outlet and a second raw water inlet, the concentrated water outlet is connected to the concentrated water inlet, the central tube comprises a first chamber for collecting purified water produced by the second membrane unit and the first membrane unit and a second chamber for collecting wastewater produced by the second membrane unit, the second chamber is connected to the first wastewater outlet.

[0008] Preferably, the first chamber is provided with a first collecting hole, the second chamber is provided with a second collecting hole, and the second chamber is connected to the first wastewater outlet through the second collecting hole.

[0009] Preferably, the first clean water side of the second membrane unit and the second clean water side of the first membrane unit are respectively provided with clean water flow channels formed by tape sealing, and the water outlet of the clean water flow channel is connected with the first chamber through the first collecting hole. The first clean water side is located on the back of the second membrane unit, and the second clean water side is located on the back of the first membrane unit.

[0010] Preferably, the central tube further comprises a first sealing ring and an isolation plate, wherein the first sealing ring is sleeved on the purified water outlet of the central tube, and the isolation plate is located at the bottom of the central tube.

[0011] Preferably, the volume of the first chamber is greater than the volume of the second chamber.

[0012] Preferably, the upper sides of the second membrane unit and the first membrane unit perpendicular to the central tube are fully sealed by end face gluing, and the lower sides corresponding to the upper sides of the second membrane unit and the first membrane unit are partially sealed by end face gluing. The lower side of the first raw water side of the second membrane unit is also provided with a first raw water inlet and a front gluing area. The first raw water inlet is formed by an area not sealed with glue. The front gluing area is between the first raw water inlet and the lower side end face sealing area, and the area not sealed with glue on the lower side of the first membrane unit forms the second raw water inlet.

[0013] Preferably, the second membrane unit is a unit closer to the roll guide and is wound inside the first membrane unit. The number of the second membrane unit and the number of the first membrane unit are at least one, and the first raw water side and the second raw water side are respectively provided with a grid layer for forming a raw water flow channel.

[0014] A water purification device having a lateral flow membrane assembly as described above, further comprising a lower end cover, an upper end cover and a non-porous tape, wherein the lower end cover is installed at the bottom of the lateral flow membrane assembly, the upper end cover is installed at the top of the lateral flow membrane assembly, and the non-porous tape is wrapped around the outside of the lateral flow membrane assembly.

[0015] Preferably, the lower end cover is provided with a raw water inlet, the upper end cover is provided with a second wastewater outlet, a second sealing ring is sleeved on the outer side of the upper end cover, the raw water inlet is connected to the first raw water inlet and the second raw water inlet, and the second wastewater outlet is connected to the second chamber.

[0016] The utility model has the following beneficial effects:

[0017] The membrane assembly of this solution consists of two membrane units connected in series and wound on the same central tube. Through unique process and flow channel design, the membrane assembly of this solution can realize two sections of side flow channels connected in series, with only two sealing points. The overall membrane assembly volume and qualified rate are consistent with those of existing conventional RO, achieving an ideal state. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the raw water flow path principle when the second membrane unit and the first membrane unit are in the expanded state in the present invention;

[0019] Figure 2 This is a schematic structural diagram of the central tube in the present utility model;

[0020] Figure 3 This is a schematic diagram of the water purification flow path principle in the utility model when the second membrane unit and the first membrane unit are in the expanded state;

[0021] Figure 4 This is a schematic diagram of the water channel direction of the lateral flow membrane component in the utility model.

[0022] Among them, 1-second membrane unit, 11-first raw water side, 111-first wastewater outlet, 112-concentrated water inlet, 113-first raw water inlet, 12-first clean water side, 2-first membrane unit, 21-second raw water side, 211-concentrated water outlet, 212-second raw water inlet, 22-second clean water side, 3-center tube, 31-first chamber, 311-first collecting hole, 32-second chamber, 321-second collecting hole, 33-first sealing ring, 34-isolation plate, 35-clean water outlet, 4-front gluing area, 5-end cover gluing area, 6-tape, 7-lower end cover, 71-raw water inlet, 8-upper end cover, 81-second sealing ring, 82-second wastewater outlet, 9-holeless tape. DETAILED DESCRIPTION

[0023] Example 1

[0024] like Figure 1-3 As shown, a lateral flow membrane assembly includes a second membrane unit 1, a first membrane unit 2 and a central tube 3. The second membrane unit 1 and the first membrane unit 2 are wound on the central tube 3. The first raw water side 11 of the second membrane unit 1 is provided with a first wastewater outlet 111 and a concentrated water inlet 112 that are connected. The second raw water side 21 of the first membrane unit 2 is provided with a concentrated water outlet 211 and a second raw water inlet 212 that are connected. The concentrated water outlet 211 is connected to the concentrated water inlet 112. The central tube 3 includes a first chamber 31 for collecting the clean water produced by the second membrane unit 1 and the first membrane unit 2, and a second chamber 32 for collecting the wastewater produced by the second membrane unit 1. The second chamber 32 is connected to the first wastewater outlet 111.

[0025] Raw water enters from the first raw water inlet 113 and the second raw water inlet 212, and is filtered by the second membrane unit 1 and the first membrane unit 2. The clean water in the raw water flows into the first chamber 31 from the first clean water side 12 and the second clean water side 22 on the back and is collected, and then flows out from the clean water outlet 35; the waste water in the raw water flows out from the first waste water outlet 111 of the second membrane unit 1 to the second chamber 32 and is collected, and then flows out from the second chamber 32.

[0026] The first chamber 31 is provided with a first collecting hole 311 , and the second chamber 32 is provided with a second collecting hole 321 . The second chamber 32 is communicated with the first wastewater outlet 111 through the second collecting hole 321 .

[0027] The first clean water side 12 of the second membrane unit 1 and the second clean water side 22 of the first membrane unit 2 are respectively provided with clean water flow channels formed by sealing with tape 6. The water outlet of the clean water flow channel is connected with the first chamber 31 through the first collecting hole 311. The first clean water side 12 is located on the back of the second membrane unit 1, and the second clean water side 22 is located on the back of the first membrane unit 2.

[0028] The adhesive tape 6 of the clean water flow channel is formed by sealing glue on the clean water side.

[0029] The central tube 3 further includes a first sealing ring 33 and an isolation piece 34 . The first sealing ring 33 is sleeved on the purified water outlet 35 of the central tube 3 , and the isolation piece 34 is located at the bottom of the central tube 3 .

[0030] The volume of the first chamber 31 is greater than the volume of the second chamber 32 .

[0031] The upper sides of the second membrane unit 1 and the first membrane unit 2 perpendicular to the central tube 3 are fully sealed by gluing the end covers, and the lower sides corresponding to the upper sides of the second membrane unit 1 and the first membrane unit 2 are partially sealed by gluing the end covers. The lower side of the first raw water side 11 of the second membrane unit 1 is also provided with a first raw water inlet 113 and a front gluing area 4. The first raw water inlet 113 is formed by an area that is not glued and sealed. The front gluing area 4 is between the first raw water inlet 113 and the glued area 5 of the lower side end cover, and the area on the lower side of the first membrane unit 2 that is not glued and sealed forms the second raw water inlet 212.

[0032] like Figure 1 As shown, the upper and lower sides of the membrane unit are the first and third sides, respectively, and the left and right sides of the membrane unit are the second and fourth sides, respectively. The upper sides of the second membrane unit 1 and the first membrane unit 2 are completely sealed by the end cap glue area 5, which is formed by the glue on the end cap sealing the end face of the membrane unit. The lower side of the second membrane unit 1 is partially sealed by the end cap glue area 5 and the front glue area 4. The lower side of the first membrane unit 2 is partially sealed by the end cap glue area 5, and the front glue area 4 is formed by the glue on the front face of the membrane of the second unit 1.

[0033] The second membrane unit 1 is a unit closer to the roll guide cloth and is wound inside the first membrane unit 2. The number of the second membrane unit 1 and the number of the first membrane unit 2 are respectively one. The first raw water side 11 and the second raw water side 21 are respectively provided with a grid layer for forming a raw water flow channel.

[0034] Example 2

[0035] The difference between this embodiment and embodiment 1 is that: Figure 4 As shown, a water purification device having the lateral flow membrane assembly also includes a lower end cover 7, an upper end cover 8 and a non-porous tape 9, the lower end cover 7 is installed at the bottom of the lateral flow membrane assembly, the upper end cover 8 is installed at the top of the lateral flow membrane assembly, and the non-porous tape 9 is wrapped around the outside of the lateral flow membrane assembly.

[0036] The lower end cover 7 is provided with a raw water inlet 71, the upper end cover 8 is provided with a second waste water outlet 82, and a second sealing ring 81 is sleeved on the outer side of the upper end cover 8. The raw water inlet 71 is connected to the first raw water inlet 113 and the second raw water inlet 212, and the second waste water outlet 82 is connected to the second chamber 32.

[0037] After the raw water enters the membrane assembly from the raw water inlet 71 , it is filtered by the membrane assembly, and the clean water flows out from the clean water outlet 35 of the central tube 3 . The waste water flows out from the second waste water outlet 82 after passing through the second chamber 32 of the central tube 3 .

[0038] Example 3

[0039] The difference between this embodiment and embodiment 1 is that the number of the second membrane units 1 and the number of the first membrane units 2 are two or more.

[0040] The above description is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any changes or modifications made by any technician in this field within the scope of the present invention are included in the patent scope of the present invention.

Claims

1. A lateral flow membrane module, comprising a second membrane unit (1), a first membrane unit (2) and a central tube (3), wherein the second membrane unit (1) and the first membrane unit (2) are wound around the central tube (3), characterized in that: The first raw water side (11) of the second membrane unit (1) is provided with a first wastewater outlet (111) and a concentrated water inlet (112) that are connected to each other. The second raw water side (21) of the first membrane unit (2) is provided with a concentrated water outlet (211) and a second raw water inlet (212) that are connected to each other. The concentrated water outlet (211) is connected to the concentrated water inlet (112). The central tube (3) includes a first chamber (31) for collecting purified water produced by the second membrane unit (1) and the first membrane unit (2) and a second chamber (32) for collecting wastewater produced by the second membrane unit (1). The second chamber (32) is connected to the first wastewater outlet (111).

2. A lateral flow membrane module according to claim 1, characterized in that: The first chamber (31) is provided with a first collecting hole (311), the second chamber (32) is provided with a second collecting hole (321), and the second chamber (32) is communicated with the first wastewater outlet (111) through the second collecting hole (321).

3. A lateral flow membrane module according to claim 2, characterized in that: The first clean water side (12) of the second membrane unit (1) and the second clean water side (22) of the first membrane unit (2) are respectively provided with clean water flow channels formed by sealing with adhesive tape (6); the water outlets of the clean water flow channels are connected to the first chamber (31) through the first collecting hole (311); the first clean water side (12) is located on the back side of the second membrane unit (1), and the second clean water side (22) is located on the back side of the first membrane unit (2).

4. A lateral flow membrane module according to claim 3, characterized in that: The central tube (3) further comprises a first sealing ring (33) and an isolation plate (34). The first sealing ring (33) is sleeved on the clean water outlet (35) of the central tube (3), and the isolation plate (34) is located at the bottom of the central tube (3).

5. A lateral flow membrane module according to claim 1, characterized in that: The volume of the first chamber (31) is greater than the volume of the second chamber (32).

6. A lateral flow membrane module according to claim 1, characterized in that: The upper sides of the second membrane unit (1) and the first membrane unit (2) perpendicular to the central tube (3) are fully sealed by end face glue, and the lower sides corresponding to the upper sides of the second membrane unit (1) and the first membrane unit (2) are partially sealed by end face glue. The lower side of the first raw water side (11) of the second membrane unit (1) is also provided with a first raw water inlet (113) and a front glue area (4). The first raw water inlet (113) is formed by an area not sealed by glue. The front glue area (4) is between the first raw water inlet (113) and the lower side end face sealing area (5). The area not sealed by glue on the lower side of the first membrane unit (2) forms a second raw water inlet (212).

7. A lateral flow membrane module according to claim 1, characterized in that: The second membrane unit (1) is a unit closer to the roll guide cloth and is wound inside the first membrane unit (2). The number of the second membrane unit (1) and the number of the first membrane unit (2) are at least one, respectively. The first raw water side (11) and the second raw water side (21) are respectively provided with a grid layer for forming a raw water flow channel.

8. A water purification device having a lateral flow membrane module according to any one of claims 1 to 7, characterized in that: The device further comprises a lower end cover (7), an upper end cover (8) and a non-porous adhesive tape (9), wherein the lower end cover (7) is mounted on the bottom of the lateral flow membrane assembly, the upper end cover (8) is mounted on the top of the lateral flow membrane assembly, and the non-porous adhesive tape (9) is wound around the outside of the lateral flow membrane assembly.

9. A water purification device according to claim 8, characterized in that: The lower end cover (7) is provided with a raw water inlet (71), the upper end cover (8) is provided with a second waste water outlet (82), a second sealing ring (81) is sleeved on the outer side of the upper end cover (8), the raw water inlet (71) is communicated with the first raw water inlet (113) and the second raw water inlet (212), and the second waste water outlet (82) is communicated with the second chamber (32).

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