CN114073894A - Electrodialysis water distribution flow channel, forming method and partition board - Google Patents
Electrodialysis water distribution flow channel, forming method and partition board Download PDFInfo
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- CN114073894A CN114073894A CN202010820484.XA CN202010820484A CN114073894A CN 114073894 A CN114073894 A CN 114073894A CN 202010820484 A CN202010820484 A CN 202010820484A CN 114073894 A CN114073894 A CN 114073894A
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- electrodialysis
- flow channel
- water flow
- water distribution
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/42—Electrodialysis; Electro-osmosis ; Electro-ultrafiltration; Membrane capacitive deionization
- B01D61/422—Electrodialysis
Abstract
The invention discloses an electrodialysis water distribution flow channel, a forming method and a partition plate, belonging to the technical field of electrodialysis. The electrodialysis water distribution flow channel, the forming method and the partition plate have good sealing performance.
Description
Technical Field
The invention belongs to the technical field of electrodialysis, and particularly relates to an electrodialysis water distribution flow channel, a forming method and a partition plate.
Background
The process of separating different solute particles by the selective permeability of a semi-permeable membrane is called dialysis. When dialysis is performed under the action of an electric field, the phenomenon in which charged solute particles in a solution migrate through a membrane is called electrodialysis. The technology of purifying and separating substances by electrodialysis is called electrodialysis method, is a new technology developed in the 50 s of the 20 th century, is originally used for seawater desalination, is widely used in chemical industry, light industry, metallurgy, paper making and medical industry at present, and is particularly used for preparing pure water and treating three wastes in environmental protection, such as acid and alkali recovery, electroplating waste liquid treatment and useful substance recovery from industrial waste water.
The partition board is an important structure in the electrodialysis technology, an electrodialysis water distribution flow channel and a plate frame in the prior art are integrally formed, a water flow channel can only be arranged on the surface of the electrodialysis water distribution flow channel and is easy to collapse under pressure, and most of the electrodialysis water distribution flow channels are of single-layer structures, so that the water flow channel is easy to deform, poor in sealing performance and easy to leak; the overlong water flow channel arranged on the surface of the electrodialysis water distribution flow channel easily causes the membrane to be embedded into the water flow channel, thereby causing the blockage problem.
Disclosure of Invention
The invention aims to provide an electrodialysis water distribution flow channel, a forming method and a partition plate, which have good sealing performance.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides an electrodialysis water distribution flow channel which comprises a flow channel body, wherein a plurality of water flow grooves are formed in one side face of the flow channel body, the water flow grooves penetrate through two side walls in the height direction of the flow channel body, a blocking layer is fixed on an opening in the thickness direction of each water flow groove, the blocking layer blocks the water flow grooves to form water flow holes, and the outer surface of the blocking layer and the outer surface of the flow channel body are positioned on the same horizontal plane.
Preferably, the cross-section of each of the plurality of water flow holes is one of circular, oval or regular polygon.
Preferably, the shortest distance between adjacent water flow holes is D, when the cross sections of the water flow holes are all circular, the diameter of the water flow hole is D, when the cross sections of the water flow holes are all elliptical, the major axis of the water flow hole is D, when the cross sections of the water flow holes are all regular polygons, the diameter of an inscribed circle of the water flow hole is D, and D satisfy the following formula: D/D is more than or equal to 0.5 and less than or equal to 2.
Preferably, the opening in the thickness direction of the water flow channel has a stepped wall surface.
Preferably, the flow channel body comprises a support layer, a first sealing layer and a second sealing layer, and at least one first sealing layer and at least one second sealing layer are compounded on two surfaces in the thickness direction of the support layer respectively.
Preferably, the material of the supporting layer is PP, and the materials of the first sealing layer and the second sealing layer are both EPDM.
Preferably, the thickness of the support layer is 0.3 to 0.8mm, and the thickness of each of the first sealant layer and the second sealant layer is 0.1 to 0.3 mm.
Preferably, the shore C hardness of the support layer is from 85 ° to 95 °, and the shore C hardness of each of the first and second sealant layers is from 50 ° to 70 °.
The invention also provides an electrodialysis water distribution flow channel forming method, which comprises the steps of excavating a plurality of water flow channels on one side surface of the flow channel body, enabling the water flow channels to penetrate through two side walls in the height direction of the flow channel body, then welding or gluing a blocking layer on an opening in the thickness direction of the water flow channels, blocking the water flow channels to form water flow holes, and enabling the outer surfaces of the blocking layer and the flow channel body to be in the same horizontal plane.
The invention also provides an electrodialysis partition plate which comprises a plate frame, liquid guide holes, a separation net and the electrodialysis water distribution flow channel, wherein the liquid guide holes are formed in two ends of the plate frame, the middle part of the plate frame is provided with a cavity, the liquid guide holes are communicated with the cavity through the electrodialysis water distribution flow channel, the separation net is arranged in the cavity, and the electrodialysis water distribution flow channel and the plate frame are integrally formed.
The invention has the beneficial effects that:
1. through the setting of shutoff layer, form the rivers hole with the shutoff of rivers groove for the rivers hole is located the inside of runner body and not the surface, can effectively avoid the collapse or the jam problem that the pressurized caused, improves the leakproofness.
2. The water flow holes can not deform and the flow rate is sufficient through the requirement on the distance between the adjacent water flow holes.
3. Through the composite design of the supporting layer, the first sealing layer and the second sealing layer, the composite sealing layer has good strength, stiffness and sealing performance, good processing performance, suitability for various welding processing technologies, difficulty in delamination and good overall sealing performance.
4. Through the setting of stairstepping wall, the fixed of the shutoff layer of being convenient for improves and connects the face, and then improves the connection stability on shutoff layer.
Drawings
Fig. 1 is a schematic bottom view of an electrodialysis water distribution channel according to an embodiment of the present invention.
Fig. 2 is a schematic front view of an electrodialysis spacer according to an embodiment of the present invention.
Fig. 3 is a schematic bottom view of an electrodialysis water distribution channel according to an embodiment of the present invention.
Fig. 4 is a schematic bottom view of a water distribution channel for electrodialysis in accordance with an embodiment of the present invention.
FIG. 5 is a schematic bottom view of the three-channel body according to the embodiment of the present invention.
Fig. 6 is a schematic bottom view of a water distribution channel for four electrodialysis according to an embodiment of the present invention.
Fig. 7 is a schematic bottom view of a water distribution channel for five electrodialysis in accordance with an embodiment of the present invention.
The labels in the figures are: the flow channel comprises a flow channel body 1, a support layer 11, a first sealing layer 12, a second sealing layer 13, a water flow groove 2, a blocking layer 3, a water flow hole 4, a stepped wall surface 5, a plate frame 6, a liquid guide hole 7, a separation net 8 and a cavity 9.
Detailed Description
The invention will now be further described with reference to the accompanying drawings and detailed description.
Those not described in detail in this specification are within the skill of the art. In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
The first embodiment is as follows:
as shown in fig. 1, the electrodialysis water distribution flow channel provided in this embodiment includes a flow channel body 1, 10 water flow grooves 2 have been seted up to the front side of flow channel body 1, 10 water flow grooves 2 are set up from left to right equidistant interval, water flow grooves 2 run through two upper and lower sidewalls of flow channel body 1, the opening of water flow groove 2 front side is fixed with blocking layer 3, blocking layer 3 forms water flow hole 4 with the shutoff of water flow groove 2, the front surface of blocking layer 3 is in the same horizontal plane with the front surface of flow channel body 1 to ensure the leakproofness. Through the setting of blocking layer 3, form rivers hole 4 with the shutoff of rivers groove 2 for rivers hole 4 is located the inside of runner body 1 and not the surface, can effectively avoid the collapse or the jam problem that the pressurized caused, improves the leakproofness.
Further, the cross sections of the 10 water flow holes 4 are all circular, the shortest distance between the adjacent water flow holes 4 is D, the diameter of each water flow hole 4 is D, and D and D satisfy the following formula: D/D is more than or equal to 0.5 and less than or equal to 2. The water flow holes 4 are not deformed and the flow rate is sufficient by the requirement of the distance between the adjacent water flow holes 4.
The embodiment also provides an electrodialysis water distribution flow channel forming method, 10 water flow grooves 2 are dug on the front side surface of the flow channel body 1, so that the water flow grooves 2 penetrate through the upper side wall and the lower side wall of the flow channel body 1, then the sealing layer 3 is welded or glued at the opening on the front side of the water flow grooves 2, the water flow grooves 2 are sealed to form water flow holes 4, and the front surface of the sealing layer 3 and the front surface of the flow channel body 1 are located on the same horizontal plane.
As shown in fig. 2, this embodiment further provides an electrodialysis partition board, which includes a plate frame 6, liquid guide holes 7, a partition net 8, and an electrodialysis water distribution flow channel as mentioned above, wherein the liquid guide holes 7 are formed at both the upper and lower ends of the plate frame 6, a cavity 9 is formed in the middle of the plate frame 6, the liquid guide holes 7 are communicated with the cavity 9 through the electrodialysis water distribution flow channel, the partition net 8 is disposed in the cavity 9, and the electrodialysis water distribution flow channel and the plate frame 6 are integrally formed.
Example two:
as shown in fig. 3, the present embodiment is different from the first embodiment in that: the flow channel body 1 comprises a supporting layer 11, a first sealing layer 12 and a second sealing layer 13, wherein the first sealing layer 12 is compounded on the rear side surface of the supporting layer 11, and the second sealing layer 13 is compounded on the front side surface of the supporting layer 11. The supporting layer 11 is made of PP, the first sealing layer 12 and the second sealing layer 13 are made of EPDM, the PP is high in strength, and the EPDM has good temperature resistance. Through the composite design of the supporting layer 11, the first sealing layer 12 and the second sealing layer 13, the composite sealing layer has good strength, stiffness and sealing performance, good processing performance, suitability for various welding processing technologies, difficulty in delamination and good overall sealing performance.
Further, the thickness of the support layer 11 is 0.5mm, and the thickness of each of the first sealant 12 and the second sealant 13 is 0.1 mm. The shore C hardness of the support layer 11 is 90 °, and the shore C hardness of the first sealant 12 and the shore C hardness of the second sealant 13 are both 60 °, so that sufficient strength and softness are ensured, and good sealing performance is achieved.
Example three:
as shown in fig. 4 to 5, the present embodiment is different from the first embodiment in that: the opening in 2 front sides in rivers grooves has stairstepping wall 5, through stairstepping wall 5's setting, the face is connected in the fixing of the shutoff layer 3 of being convenient for, and then improves the connection stability of shutoff layer 3.
Example four:
as shown in fig. 6, the present embodiment is different from the first embodiment in that: the cross sections of the 10 water flow holes 42 are all oval, the long axis of the water flow hole 43 is D, and D and D satisfy the following formula: D/D is more than or equal to 0.5 and less than or equal to 2.
Example five:
as shown in fig. 7, the present embodiment is different from the first embodiment in that: the cross sections of the 10 water flow holes 42 are all square, the diameter of an inscribed circle of the water flow hole 4 is D, and D and D satisfy the following formula: D/D is more than or equal to 0.5 and less than or equal to 2.
The invention can be used for common electrodialysis, bipolar membrane electrodialysis, diffusion electrodialysis and the like.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art; the technical solutions described in the foregoing embodiments may be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the corresponding technical spirit depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. An electrodialysis water distribution runner which is characterized in that:
the runner comprises a runner body, wherein a plurality of water flow grooves are formed in one side surface of the runner body, and the water flow grooves penetrate through two side walls in the height direction of the runner body;
the opening on the water flow groove thickness direction is fixed with the shutoff layer, the shutoff layer will the water flow groove shutoff forms the rivers hole, the surface on shutoff layer with the surface of runner body is in same horizontal plane.
2. An electrodialysis water distribution flow channel as claimed in claim 1, wherein:
the cross section of each of the water flow holes is one of a circle, an ellipse or a regular polygon.
3. An electrodialysis water distribution flow channel as claimed in claim 2, wherein:
the shortest distance between the adjacent water flow holes is D;
when the cross sections of the water flow holes are all circular, the diameter of each water flow hole is d;
when the cross section of the water flow hole is elliptical, the long axis of the water flow hole is d;
when the cross sections of the water flow holes are all regular polygons, the diameter of an inscribed circle of the water flow hole is d;
the D and D satisfy the following formula:
0.5≤d/D≤2。
4. an electrodialysis water distribution flow channel as claimed in claim 1, wherein:
the opening in the thickness direction of the water flow groove is provided with a stepped wall surface.
5. An electrodialysis water distribution flow channel as claimed in claim 1, wherein:
the flow channel body comprises a supporting layer, a first sealing layer and a second sealing layer;
at least one first sealing layer and at least one second sealing layer are compounded on two surfaces in the thickness direction of the supporting layer respectively.
6. An electrodialysis water distribution flow channel as claimed in claim 5, wherein:
the supporting layer is made of PP;
the first sealing layer and the second sealing layer are both made of EPDM.
7. An electrodialysis water distribution flow channel as claimed in claim 5, wherein:
the thickness of the supporting layer is 0.3-0.8 mm;
the thickness of the first sealing layer and the second sealing layer is 0.1-0.3 mm.
8. An electrodialysis water distribution flow channel as claimed in claim 5, wherein:
the Shore C hardness of the supporting layer is 85-95 degrees;
the Shore C hardness of the first sealing layer and the Shore C hardness of the second sealing layer are both 50-70 degrees.
9. An electrodialysis water distribution flow channel forming method as claimed in any one of claims 1 to 8, characterized in that:
a plurality of rivers grooves are excavated in a side face of the runner body, so that the rivers grooves penetrate through two side walls in the height direction of the runner body, then the openings in the thickness direction of the rivers grooves are welded or glued to form water flow holes, and the outer surface of the blocking layer and the outer surface of the runner body are located on the same horizontal plane.
10. An electrodialysis separator, comprising:
comprises a plate frame, a liquid guide hole, a separation net and an electrodialysis water distribution flow channel as claimed in any one of claims 1-8;
both ends of the plate frame are provided with liquid guide holes;
the middle part of the plate frame is provided with a cavity;
the liquid guide hole is communicated with the cavity through the electrodialysis water distribution flow passage;
the separation net is arranged in the cavity;
the electrodialysis water distribution flow channel and the plate frame are integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010820484.XA CN114073894A (en) | 2020-08-14 | 2020-08-14 | Electrodialysis water distribution flow channel, forming method and partition board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010820484.XA CN114073894A (en) | 2020-08-14 | 2020-08-14 | Electrodialysis water distribution flow channel, forming method and partition board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114073894A true CN114073894A (en) | 2022-02-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010820484.XA Pending CN114073894A (en) | 2020-08-14 | 2020-08-14 | Electrodialysis water distribution flow channel, forming method and partition board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114073894A (en) |
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2020
- 2020-08-14 CN CN202010820484.XA patent/CN114073894A/en active Pending
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