Water distribution runner for electrodialysis

Abstract

The utility model discloses a water distribution runner for electrodialysis, which is applied between two ion exchange membranes and comprises a runner main body, a plurality of first fluid channels are arranged on one side surface of the runner main body, the first fluid channels are arranged at intervals, and a runner supporting layer is arranged between every two adjacent first fluid channels; a plurality of first fluid channels are formed in one side face of the flow channel body, a plurality of second fluid channels are formed in the other side face of the flow channel body, the second fluid channels are arranged at intervals, and a flow channel supporting layer is arranged between every two adjacent second fluid channels. The phenomenon of local collapse or rupture of the ion exchange membrane can be prevented, so that the feed liquid is uniformly distributed in the runner main body, no dead angle is generated, and the situation that the ion exchange membrane and the partition plate are damaged due to local temperature rise of a membrane stack can be prevented, and the first fluid channel and the second fluid channel are fully sealed with the ion exchange membrane; and mutual permeation of feed liquid in the dialysis device is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of dialysis, in particular to a water distribution channel used for electrodialysis. Background Art

[0002] Dialysis is a membrane process technology that uses concentration difference or potential difference as a driving force, and utilizes the difference in diffusion rate between anions and metal ions in a selective ion exchange membrane to achieve separation, thereby achieving material separation and recycling. The partition is one of the necessary components of the dialysis device. Its function is to form a certain gap between the ion exchange membranes as a compartment for the solution, providing water flow conduction for the normal operation of the dialysis device. The water distribution channel on the partition is a channel for the external flow of the membrane stack to enter the membrane stack through the compression position.

[0003] However, when the current water distribution channel is in use, the supporting surface in contact with the membrane surface is uneven. When the membrane and the water distribution channel are pressed tightly, the diaphragm is easily damaged or crushed, causing the diaphragm to collapse or rupture, and the liquid is easily leaked. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a water distribution channel for electrodialysis, which is applied between two ion exchange membranes, and includes a channel body, a side of which is provided with a plurality of first fluid channels, each of which is arranged at intervals, and a channel support layer is arranged between two adjacent first fluid channels;

[0005] A plurality of second fluid channels are arranged on the other side of the channel body, each second fluid channel is arranged at intervals, a channel support layer is arranged between two adjacent second fluid channels, and the ion exchange membrane and the first fluid channel or the second fluid channel form a cavity for fluid circulation.

[0006] Preferably, the surface of the flow channel support layer is a smooth plane, which supports the ion exchange membrane.

[0007] Preferably, the number of the first fluid channels is 4-6, and each first fluid channel is connected to a fluid diversion channel.

[0008] Preferably, the number of the second fluid channels is 4-6, and each second fluid channel is connected to a fluid diversion channel.

[0009] Preferably, the cross section of the fluid diversion channel is funnel-shaped.

[0010] Preferably, the width of the first fluid channel and the second fluid channel is 0.4-1.2 mm, and the depth of the first fluid channel and the second fluid channel is 0.3-0.6 mm.

[0011] Preferably, the thickness of the flow channel support layer is 0.1-0.3 mm.

[0012] Preferably, a plurality of fixing blocks are arranged on both side walls of the flow channel body.

[0013] Preferably, the distance between two adjacent fixing blocks is 3 mm-6 mm.

[0014] Preferably, the fixing block has a length of 3-5 mm, a width of 4-8 mm, and a thickness of 0.1-0.3 mm.

[0015] Technical effects and advantages of the utility model:

[0016] In the utility model, the ion exchange membrane and the first fluid channel or the second fluid channel form a cavity for fluid circulation, which can prevent the local collapse or rupture of the ion exchange membrane, so that the feed liquid is evenly distributed in the flow channel body without dead corners, and can prevent the local temperature of the membrane stack from rising and damaging the ion exchange membrane and the partition. The first fluid channel and the second fluid channel are fully sealed from the ion exchange membrane to prevent the feed liquid from seeping into each other in the dialysis device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of a water distribution channel for electrodialysis provided in an embodiment of the present application;

[0018] Figure 2 is a front view of a water distribution channel for electrodialysis provided in an embodiment of the present application;

[0019] Figure 3 It is a structural schematic diagram of the coating state of the water distribution channel for electrodialysis provided in an embodiment of the present application when in use.

[0020] In the figure: 1. flow channel body; 2. first fluid channel; 3. second fluid channel; 4. flow channel support layer; 5. fixing block; 6. fluid diversion channel; 7. ion exchange membrane; 8. partition. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes.

[0022] See also Figures 1 to 3In this embodiment, a water distribution channel for electrodialysis is provided, including a channel body 1, a plurality of first fluid channels 2 are arranged on one side of the channel body 1, each first fluid channel 2 is arranged at intervals, and a channel support layer 4 is arranged between two adjacent first fluid channels 2, and a plurality of second fluid channels 3 are arranged on the other side of the channel body 1, each second fluid channel 3 is arranged at intervals, and a channel support layer 4 is arranged between two adjacent second fluid channels 3. The surface of the channel support layer 4 is a smooth plane, which supports the ion exchange membrane 7. When the two ion exchange membranes 7 are respectively attached to the two side surfaces of the channel body 1, the ion exchange membrane 7 and the first fluid channel 2 or the second fluid channel 3 form a cavity for fluid circulation. Through this design, the phenomenon of local collapse or rupture of the ion exchange membrane 7 can be prevented, so that the feed liquid is evenly distributed in the channel body 1 without dead corners, and the local temperature rise of the membrane stack can be prevented to damage the ion exchange membrane and the partition. The first fluid channel 2 and the second fluid channel 3 are fully sealed from the ion exchange membrane 7 to prevent the feed liquid from seeping into each other in the dialysis device.

[0023] Furthermore, the number of first fluid channels 2 is 4-6, each first fluid channel 2 is connected to a fluid diversion channel 6, the cross-section of the fluid diversion channel 6 is funnel-shaped, and the width of the fluid diversion channel 6 extending outward from the connection with the first fluid channel 2 gradually increases.

[0024] Furthermore, the number of the second fluid channels 3 is 4-6, each second fluid channel 3 is connected to a fluid diversion channel 6, and the width of the fluid diversion channel 6 extending outward from the connection with the second fluid channel 3 gradually increases.

[0025] In this embodiment, the width of the first fluid channel 2 and the second fluid channel 3 is 0.4-1.2 mm, the depth of the first fluid channel 2 and the second fluid channel 3 is 0.3-0.6 mm, and the thickness of the flow channel support layer 4 is 0.1-0.3 mm.

[0026] In this embodiment, a plurality of fixing blocks 5 are arranged on both side walls of the flow channel body 1 , and the fixing blocks 5 are pressed or bonded together with the electrodialysis separator.

[0027] The length of the fixing block 5 is 3-5 mm, the width is 4-8 mm, the thickness is 0.1-0.3 mm, and the distance between two adjacent fixing blocks 5 is 3 mm-6 mm.

[0028] In this embodiment, the material of the flow channel body 1 is PE (polyethylene) or PVC (polyvinyl chloride) or one or a combination thereof.

[0029] In one embodiment, the width of the first fluid channel 2 and the second fluid channel 3 is 1 mm, the depth of the first fluid channel 2 and the second fluid channel 3 is 0.5 mm, and the thickness of the flow channel support layer 4 is 0.2 mm.

[0030] The length of the fixing block 5 is 4 mm, the width is 6 mm, the thickness is 0.2 mm, and the interval between two adjacent fixing blocks 5 is 5 mm.

[0031] In another embodiment, based on the above embodiment, the width of the first fluid channel 2 and the second fluid channel 3 is 0.8 mm, the depth of the first fluid channel 2 and the second fluid channel 3 is 0.5 mm, and the thickness of the flow channel support layer 4 is 0.2 mm.

[0032] The length of the fixing block 5 is 4 mm, the width is 6 mm, the thickness is 0.2 mm, and the interval between two adjacent fixing blocks 5 is 5 mm.

[0033] The working principle of the utility model is:

[0034] When in use, the ion exchange membrane 7 and the first fluid channel 2 or the second fluid channel 3 form a cavity for fluid circulation, which can prevent the local collapse or rupture of the ion exchange membrane 7, so that the feed liquid is evenly distributed in the flow channel body 1 without dead corners, and can prevent the local temperature of the membrane stack from rising and damaging the ion exchange membrane and the partition. The first fluid channel 2 and the second fluid channel 3 are fully sealed from the ion exchange membrane 7 to prevent the feed liquid from seeping into each other in the dialysis device.

[0035] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. A water distribution channel for electrodialysis, applied between two ion exchange membranes (7), characterized in that: It comprises a flow channel body (1), a side surface of which is provided with a plurality of first fluid channels (2), each of the first fluid channels (2) being arranged at intervals, and a flow channel support layer (4) being arranged between two adjacent first fluid channels (2); A plurality of second fluid channels (3) are arranged on the other side of the flow channel body (1), each second fluid channel (3) is arranged at intervals, a flow channel support layer (4) is arranged between two adjacent second fluid channels (3), and the ion exchange membrane (7) and the first fluid channel (2) or the second fluid channel (3) form a cavity for fluid circulation.

2. A water distribution channel for electrodialysis according to claim 1, characterized in that: The surface of the flow channel support layer (4) is a smooth plane, which supports the ion exchange membrane (7).

3. A water distribution channel for electrodialysis according to claim 1, characterized in that: The number of the first fluid channels (2) is 4-6, and each first fluid channel (2) is connected to a fluid diversion channel (6).

4. A water distribution channel for electrodialysis according to claim 1, characterized in that: The number of the second fluid channels (3) is 4-6, and each second fluid channel (3) is connected to a fluid diversion channel (6).

5. A water distribution channel for electrodialysis according to claim 4, characterized in that: The cross section of the fluid diversion channel (6) is funnel-shaped.

6. The water distribution channel for electrodialysis according to claim 1, characterized in that: The width of the first fluid channel (2) and the second fluid channel (3) is 0.4-1.2 mm, and the depth of the first fluid channel (2) and the second fluid channel (3) is 0.3-0.6 mm.

7. The water distribution channel for electrodialysis according to claim 1, characterized in that: The thickness of the flow channel support layer (4) is 0.1-0.3 mm.

8. The water distribution channel for electrodialysis according to claim 1, characterized in that: A plurality of fixing blocks (5) are arranged in an array on both side walls of the flow channel body (1).

9. A water distribution channel for electrodialysis according to claim 8, characterized in that: The distance between two adjacent fixing blocks (5) is 3 mm to 6 mm.

10. A water distribution channel for electrodialysis according to claim 9, characterized in that: The fixing block (5) has a length of 3-5 mm, a width of 4-8 mm, and a thickness of 0.1-0.3 mm.

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