Efficient concentration membrane element

Abstract

The utility model discloses an efficient concentration membrane element, which relates to the technical field of concentration membrane elements and comprises a central tube and a shell, water inlet holes are evenly formed in the side wall of the central pipe, the outer end of the central pipe is sleeved with a shell, a first water inlet grid is arranged on the inner wall of the shell, a first nanofiltration membrane is arranged on the inner side of the first water inlet grid, end covers are symmetrically installed at the two ends of the shell, a connecting ring is arranged on one side of the left end cover, and a sealing ring is arranged on one side of the connecting ring. A plurality of membrane bags are formed by the first nanofiltration membranes with excellent high-pressure resistance, pollution resistance and compaction resistance and the high-density high-pressure-resistant water production runner cloth, the grid structure is optimized, and the water inlet pressure can be improved along with the increase of the concentration of concentrated water in the concentration and separation process, so that the concentration and the separation are continued, the concentration efficiency is high, and the concentration effect is good. The subsequent process is greatly simplified, and the pollution-resistant separation characteristic and the high-pressure structure are combined, so that the high-power concentration and high-pressure resistance of the membrane module are realized.

Description

Technical Field

[0001] The utility model relates to the technical field of concentrated membrane elements, in particular to a high-efficiency concentrated membrane element. Background Art

[0002] With the development and progress of science and technology, people have begun to concentrate and extract effective substances in animals and plants that are beneficial to humans. Membrane concentration devices can achieve efficient purification and concentration, and accelerate the concentration and extraction of effective substances.

[0003] With the widespread application of concentration technology, the pressure resistance of the concentration membrane element directly affects the concentration efficiency of the membrane component. At present, the operating pressure of the concentration membrane component is generally low, it cannot operate under high pressure conditions, the concentration ratio is low, and it cannot be used in the field of high-multiple concentration. For this reason, we propose a high-efficiency concentration membrane element. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a high-efficiency concentration membrane element that can operate under high pressure conditions and be applied in low concentration ratio and high concentration fields, has high practicality, and can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-efficiency concentration membrane element, comprising a central tube and a shell;

[0006] Water inlet holes are evenly opened on the side wall of the central tube, the outer end of the central tube is sleeved with a shell, a first water inlet grid is arranged on the inner wall of the shell, a first nanofiltration membrane is arranged inside the first water inlet grid, end caps are symmetrically installed at both ends of the shell, a connecting ring is arranged on one side of the left end cap, a sealing ring is arranged on one side of the connecting ring, and a disc is arranged inside the connecting ring;

[0007] The inner wall of the shell is fixedly connected to the first water inlet grid, the inner side of the first water inlet grid is fixedly connected to the first nanofiltration membrane, the inner side of the first nanofiltration membrane is fixedly connected to the flow channel cloth, the inner side of the flow channel cloth is fixedly connected to the second nanofiltration membrane, and the inner side of the second nanofiltration membrane is fixedly connected to the second water inlet grid. A plurality of membrane bags are formed by the first nanofiltration membrane with excellent high pressure resistance, pollution resistance and pressure tightness resistance and the high-density high-pressure resistant water production flow channel cloth, and the grid structure is optimized. During the concentration and separation process, as the concentration of concentrated water increases, the water inlet pressure can be increased, so that the concentration and separation can continue, and the concentration efficiency is high, which greatly simplifies the subsequent process. The pollution-resistant separation characteristics are combined with the high-pressure structure to achieve high-fold concentration and high-pressure resistance of the membrane assembly.

[0008] During use, when the concentration membrane element is in normal use, each first nanofiltration membrane sheet, the flow channel cloth and the second nanofiltration membrane sheet form a membrane bag, and there is a second water inlet grid between each adjacent membrane bag to form a concentrated water flow channel, and then the water-producing cloth on the opening side of the membrane bag is wrapped around the central tube along the axial direction of the central tube, and a plurality of water inlet holes are opened on the tube wall of the central tube, and the water inlet holes are evenly distributed around the tube wall of the central tube and connected with the inner cavity of the central tube, and the permeate is discharged through the central tube, and the outer layer surrounds the high-pressure resistant fiberglass shell, and the two end covers are fixed at the two ends of the central tube, and a plurality of grids are evenly distributed inside the end covers, and the concentrated water flows out from the gap between the grids through the grids, and then is wrapped around the central tube along the axial direction of the central tube, and the water inlet holes on the tube wall of the central tube are evenly distributed around the tube wall of the central tube and connected with the inner cavity of the central tube, and the permeate is discharged through the permeate outlet in the central tube, and the concentrated liquid passes through the concentrated water flow channel from the concentrated liquid outlet on the side of the sealing ring.

[0009] Furthermore, a disk is provided inside the connecting ring, and connecting plates are evenly installed on the outer wall of the disk. The connecting plates are fixedly connected to the inner wall of the connecting ring. A permeate outlet is opened at the center of the disk, and a concentrated liquid outlet is formed between adjacent connecting plates. The permeate is discharged through the permeate outlet in the central tube, and the concentrated liquid passes through the concentrated water channel and is discharged from the concentrated liquid outlet on the side of the sealing ring.

[0010] Furthermore, a plurality of first nanofiltration membranes, flow channel cloths and second nanofiltration membranes are arranged on the inner side of the first water inlet grid, and the second water inlet grid is fixedly connected between each group of first nanofiltration membranes, flow channel cloths and second nanofiltration membranes. The first nanofiltration membranes and the second nanofiltration membranes cooperate to form a membrane bag, which is then rolled into a membrane element that can operate under high pressure, thereby improving the stability of the element during use.

[0011] Furthermore, the thickness of the first water inlet grid, the first nanofiltration membrane, the flow channel cloth, the second nanofiltration membrane and the second water inlet grid are equal, and the width of the first water inlet grid, the first nanofiltration membrane, the flow channel cloth, the second nanofiltration membrane and the second water inlet grid are all equal to the width of the central tube, and the thickness and width are equal, ensuring that the membrane bag formed by the first nanofiltration membrane, the flow channel cloth and the second nanofiltration membrane can withstand the water inlet pressure, and the second water inlet grid is used to conveniently separate the membrane bags formed by each group to facilitate the outflow of the permeate.

[0012] Furthermore, one end of the connecting ring is fixedly connected to the sealing ring, a permeate outlet hole is provided in the center of the sealing ring, and concentrated liquid outlet holes are evenly provided on the outside of the sealing ring. The setting of the sealing ring improves the concentration efficiency, the permeate outlet hole is convenient for discharging the permeate in the central tube, and the concentrated liquid outlet hole is convenient for discharging the concentrated liquid in the central tube.

[0013] Furthermore, a water inlet pipe is provided on the right end cover, the water inlet pipe is connected with the end cover, and a valve is installed on the water inlet pipe. Through the setting of the valve, the flow rate of the solution can be freely controlled.

[0014] Compared with the prior art, the beneficial effects of the utility model are: the high-efficiency concentration membrane element has the following advantages:

[0015] 1. Multiple membrane bags are formed by the first nanofiltration membrane with excellent high-pressure resistance, pollution resistance and pressure-tightness resistance and high-density high-pressure resistant water production flow cloth, which optimizes the grid structure. During the concentration and separation process, as the concentration of concentrated water increases, the water inlet pressure can be increased, so that the concentration and separation can continue, and the concentration efficiency is high, which greatly simplifies the subsequent process. The pollution-resistant separation characteristics are combined with the high-pressure structure to achieve high-fold concentration and high-pressure resistance of the membrane component.

[0016] 2. The first nanofiltration membrane sheet and the second nanofiltration membrane sheet cooperate to form a membrane bag, which is then rolled into a membrane element that can operate under high pressure, thereby improving the stability of the element during use.

[0017] 3. The thickness and width are equal to ensure that the membrane bag formed by the first nanofiltration membrane, the flow channel cloth and the second nanofiltration membrane can withstand the water inlet pressure, and the membrane bags formed by each group are conveniently separated by the second water inlet grid to facilitate the outflow of the permeate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model.

[0019] Figure 2 It is a schematic side cross-sectional view of the structure of the utility model.

[0020] Figure 3 It is a schematic diagram of the structure of the utility model.

[0021] Figure 4 This is a schematic diagram of the sealing cover structure of the utility model.

[0022] Figure 5 This is a schematic diagram of the central tube structure of the utility model.

[0023] In the figure: 1 central tube, 2 water inlet hole, 3 outer shell, 4 first water inlet grid, 5 first nanofiltration membrane, 6 flow channel cloth, 7 second nanofiltration membrane, 8 second water inlet grid, 9 permeate outlet, 10 connecting plate, 11 concentrate outlet, 12 end cover, 13 connecting ring, 14 sealing ring, 15 permeate outlet hole, 16 concentrate outlet hole, 17 water inlet pipe, 18 valve. DETAILED DESCRIPTION

[0024] 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.

[0025] See also Figure 1-4 , This embodiment provides a technical solution: a high-efficiency concentration membrane element, including a central tube 1 and a shell 3;

[0026] Water inlet holes 2 are evenly opened on the side wall of the central tube 1, a shell 3 is sleeved on the outer end of the central tube 1, a first water inlet grid 4 is arranged on the inner wall of the shell 3, a first nanofiltration membrane 5 is arranged inside the first water inlet grid 4, end caps 12 are symmetrically installed at both ends of the shell 3, a connecting ring 13 is arranged on one side of the left end cap 12, a sealing ring 14 is arranged on one side of the connecting ring 13, and a disc is arranged inside the connecting ring 13;

[0027] The inner wall of the shell 3 is fixedly connected to the first water inlet grid 4, the inner side of the first water inlet grid 4 is fixedly connected to the first nanofiltration membrane 5, the inner side of the first nanofiltration membrane 5 is fixedly connected to the flow channel cloth 6, the inner side of the flow channel cloth 6 is fixedly connected to the second nanofiltration membrane 7, and the inner side of the second nanofiltration membrane 7 is fixedly connected to the second water inlet grid 8. A plurality of membrane bags are formed by the first nanofiltration membrane 5 with excellent high pressure resistance, pollution resistance and pressure tightness resistance and the high-density high-pressure resistant water production flow channel cloth, and the grid structure is optimized. During the concentration and separation process, as the concentration of concentrated water increases, the water inlet pressure can be increased, so that the concentration and separation can continue, and the concentration efficiency is high, which greatly simplifies the subsequent process. The pollution-resistant separation characteristics are combined with the high-pressure structure to achieve high-fold concentration and high-pressure resistance of the membrane assembly.

[0028] A disk is arranged inside the connecting ring 13, and connecting plates 10 are evenly installed on the outer wall of the disk. The connecting plates 10 are fixedly connected to the inner wall of the connecting ring 13. A permeate outlet 9 is opened at the center of the disk, and a concentrated liquid outlet 11 is formed between adjacent connecting plates 10. The permeate is discharged through the permeate outlet 9 in the central tube 1, and the concentrated liquid passes through the concentrated water channel and is discharged from the concentrated liquid outlet 10 on the side of the sealing ring 12.

[0029] A plurality of first nanofiltration membrane sheets 5, flow channel cloths 6 and second nanofiltration membrane sheets 7 are arranged on the inner side of the first water inlet grid 4. A second water inlet grid 8 is fixedly connected between each group of first nanofiltration membrane sheets 5, flow channel cloths 6 and second nanofiltration membrane sheets 7. The first nanofiltration membrane sheets 5 and the second nanofiltration membrane sheets 7 cooperate to form a membrane bag, which is then rolled into a membrane element that can operate under high pressure, thereby improving the stability of the element during use.

[0030] The thickness of the first water inlet grid 4, the first nanofiltration membrane 5, the flow channel cloth 6, the second nanofiltration membrane 7 and the second water inlet grid 8 are equal, and the width of the first water inlet grid 4, the first nanofiltration membrane 5, the flow channel cloth 6, the second nanofiltration membrane 7 and the second water inlet grid 8 are all equal to the width of the central tube 1, and the thickness and width are equal, ensuring that the membrane bag formed by the first nanofiltration membrane 5, the flow channel cloth 6 and the second nanofiltration membrane 7 can withstand the water inlet pressure, and the second water inlet grid 8 is used to conveniently separate the membrane bags formed by each group to facilitate the outflow of the permeate.

[0031] One end of the connecting ring 13 is fixedly connected to the sealing ring 14. A permeate outlet hole 15 is provided in the center of the sealing ring 14. Concentrate outlet holes 16 are evenly provided on the outside of the sealing ring 14. The setting of the sealing ring 14 improves the concentration efficiency. The permeate outlet hole 15 is convenient for discharging the permeate in the central tube 1, and the concentrate outlet hole 16 is convenient for discharging the concentrate in the central tube 1.

[0032] A water inlet pipe 17 is provided on the right end cover 12, and the water inlet pipe 17 is communicated with the end cover 12. A valve 18 is installed on the water inlet pipe 17. The flow rate of the solution can be freely controlled by setting the valve.

[0033] The working principle of a high-efficiency concentration membrane element provided by the utility model is as follows: when in use, when the concentration membrane element is in normal use, each first nanofiltration membrane sheet 5, flow channel cloth 6 and second nanofiltration membrane sheet 7 form a membrane bag, which is then rolled into a membrane element and can be operated under high pressure, thereby improving the stability of the element when in use. A second water inlet grid 8 is provided between each adjacent membrane bag to form a concentrated water flow channel, and then the water-producing cloth on one side of the membrane bag opening is axially wound around the central tube 1 on the central tube 1, and a plurality of water inlet holes 2 are provided on the tube wall of the central tube 1, and the water inlet holes 2 are evenly distributed around the tube wall of the central tube 1 and connected to the inner cavity of the central tube 1, and the permeate is discharged through the central tube 1, and the outer layer surrounds the high-pressure resistant glass fiber reinforced plastic shell 3, and two end covers 12 are fixed at both ends of the central tube 1, and a plurality of grids are evenly distributed inside the end covers 12, and the concentrated water flows out from the gap between the grids, and then is axially wound around the central tube 1 on the central tube 1, and the tube of the central tube 1 The water inlet holes 2 on the wall are evenly distributed around the wall of the central tube 1 and are connected to the inner cavity of the central tube 1. The permeate is discharged through the permeate outlet 9 in the central tube 1, and the concentrated liquid passes through the concentrated water channel from the concentrated liquid outlet 10 on the side of the sealing ring. A plurality of membrane bags are formed by the first nanofiltration membrane 5 with excellent high-pressure resistance, pollution resistance and pressure-tightness resistance and the high-density high-pressure resistant water production channel cloth, and the grid structure is optimized. During the concentration and separation process, as the concentration of concentrated water increases, the water inlet pressure can be increased, so that the concentration and separation can continue, and the concentration efficiency is high, which greatly simplifies the subsequent process. The pollution-resistant separation characteristics are combined with the high-pressure structure to achieve high-fold concentration and high-pressure resistance of the membrane assembly. The thickness and width are equal to ensure that the membrane bags formed by the first nanofiltration membrane 5, the channel cloth 6 and the second nanofiltration membrane 7 can withstand the water inlet pressure, and the membrane bags formed in each group are conveniently separated by the second water inlet grid 8, which facilitates the outflow of the permeate.

[0034] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A high-efficiency concentrating membrane element, characterized in that: It comprises a central tube (1) and an outer shell (3); Water inlet holes (2) are evenly arranged on the side wall of the central tube (1); the outer end of the central tube (1) is sleeved with an outer shell (3); a first water inlet grid (4) is arranged on the inner wall of the outer shell (3); a first nanofiltration membrane (5) is arranged inside the first water inlet grid (4); end caps (12) are symmetrically installed at both ends of the outer shell (3); a connecting ring (13) is arranged on one side of the left end cap (12); a sealing ring (14) is arranged on one side of the connecting ring (13); and a disk is arranged inside the connecting ring (13); The inner wall of the outer shell (3) is fixedly connected to the first water inlet grid (4), the inner side of the first water inlet grid (4) is fixedly connected to the first nanofiltration membrane (5), the inner side of the first nanofiltration membrane (5) is fixedly connected to the flow channel cloth (6), the inner side of the flow channel cloth (6) is fixedly connected to the second nanofiltration membrane (7), and the inner side of the second nanofiltration membrane (7) is fixedly connected to the second water inlet grid (8).

2. A high-efficiency concentrating membrane element according to claim 1, characterized in that: A disk is arranged inside the connecting ring (13), and connecting plates (10) are evenly installed on the outer wall of the disk. The connecting plates (10) are fixedly connected to the inner wall of the connecting ring (13). A permeate outlet (9) is opened at the center of the disk, and a concentrated liquid outlet (11) is formed between adjacent connecting plates (10).

3. The high-efficiency concentrating membrane element according to claim 1, characterized in that: A plurality of first nanofiltration membranes (5), flow channel fabrics (6) and second nanofiltration membranes (7) are arranged on the inner side of the first water inlet grid (4), and a second water inlet grid (8) is fixedly connected between each group of first nanofiltration membranes (5), flow channel fabrics (6) and second nanofiltration membranes (7).

4. The high-efficiency concentrating membrane element according to claim 1, characterized in that: The thickness of the first water inlet grid (4), the first nanofiltration membrane (5), the flow channel cloth (6), the second nanofiltration membrane (7) and the second water inlet grid (8) are equal, and the width of the first water inlet grid (4), the first nanofiltration membrane (5), the flow channel cloth (6), the second nanofiltration membrane (7) and the second water inlet grid (8) are all equal to the width of the central tube (1), and the thickness and width are equal.

5. The high-efficiency concentrating membrane element according to claim 1, characterized in that: One end of the connecting ring (13) is fixedly connected to the sealing ring (14); a permeate outlet hole (15) is provided at the center of the sealing ring (14); and concentrated liquid outlet holes (16) are evenly arranged on the outside of the sealing ring (14).

6. The high-efficiency concentrating membrane element according to claim 1, characterized in that: A water inlet pipe (17) is provided on the right end cover (12), the water inlet pipe (17) is communicated with the end cover (12), and a valve (18) is installed on the water inlet pipe (17).

Images