CN215439786U

CN215439786U - Cartridge-type electrodialysis unit and module comprising same

Info

Publication number: CN215439786U
Application number: CN202120559047.7U
Authority: CN
Inventors: 蔡翼泽; 林冠佑; 杨欣茹
Original assignee: Industrial Technology Research Institute ITRI
Current assignee: Industrial Technology Research Institute ITRI
Priority date: 2020-12-30
Filing date: 2021-03-18
Publication date: 2022-01-07
Anticipated expiration: 2031-03-18
Also published as: TWM611767U

Abstract

The cartridge type electrodialysis unit comprises a containing box body, a filtering membrane set and a cover body. The accommodating box body comprises a diaphragm bearing seat, a diaphragm limiting wall and an accommodating opening. The diaphragm limiting wall is arranged on the diaphragm bearing seat in a surrounding mode to form an accommodating opening. The filtering membrane group is arranged on the membrane bearing seat and abuts against the inner side of the membrane limiting wall. The filtering membrane group comprises a first ion exchange membrane, a second ion exchange membrane and a flow passage clapboard arranged between the first ion exchange membrane and the second ion exchange membrane. The cover body component is arranged on the accommodating box body and comprises an opening, a body part and a pressing part, the opening penetrates through the body part, the first side, adjacent to the filtering membrane group, of the body part is provided with a peripheral area and an inner area, the inner area is more adjacent to the opening than the peripheral area, and the pressing part is formed on the inner area.

Description

Cartridge-type electrodialysis unit and module comprising same

Technical Field

The present invention relates to an electrodialysis unit and a module including the electrodialysis unit, and more particularly, to a cassette electrodialysis unit and a module including the cassette electrodialysis unit.

Background

The Electrodialysis (ED) technique is a membrane separation technique driven by an electric field and is used for various purposes such as Desalination, concentration and purification, and is also called Electrochemical Desalination (ED). The electric dialysis system makes water flow through the alternately arranged anion and cation exchange membranes, and under the action of the DC electric field of the electrode plates, the anion and cation exchange membranes are driven to move so as to selectively permeate the anion and cation exchange membranes, so that the anion and cation can be removed or concentrated in another water channel, thereby achieving the purpose of water quality purification.

The common electrodialysis technology utilizes screws to penetrate all anion and cation exchange membranes and electrode plates to press the anion and cation exchange membranes to prevent water from leaking out, but the pressing mode only generates point-shaped pressing stress at the penetration position of the screws, and each screw needs to be locked respectively, so that the problems of different locking tightness of each screw are easy to occur, the locking strength of the screws is difficult to control and unify, the condition that the overlapping quantity of the anion and cation exchange membranes is limited due to the stress difference, the water tightness between the anion and cation exchange membranes at the central part is insufficient is more likely to occur, the mixing of purified water and sewage is caused, and the electrodialysis effect cannot be exerted.

The common electrodialysis technology is also provided with a pressing plate additionally arranged on the outermost side, and a screw only penetrates through the pressing plate, so that the problem of uneven pressing stress is solved, but the problem of superposition of anion and cation exchange membranes is caused because the anion and cation exchange membranes are not fixed by the screw. For example, when the size of the anion and cation exchange membranes is as large as 80cm × 160cm, deviation is easily generated during the lamination process, resulting in an increased risk of mixing of the internal clean water and the sewage. Or, when the number of the anion and cation exchange membranes is large, the overlapping action is time-consuming, even the hoisting by the crown block is needed, and the assembly efficiency is very poor. If water leakage or assembly error is found after assembly is completed, all the components can be disassembled and checked, and then the assembly operation is repeated once.

Therefore, there is still a need to develop an improved electrodialysis apparatus to solve the above-mentioned problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a cassette type electrodialysis unit and a module comprising the cassette type electrodialysis unit, wherein the cassette type electrodialysis unit is assembled more time-saving and labor-saving, and the first ion exchange membrane, the second ion exchange membrane and the flow channel partition plate can be aligned more accurately, so that the problem of internal water leakage caused by the position deviation of the membrane can be effectively reduced, and the risk of mixing purified water and sewage is eliminated. In addition to improving the problem of uneven stress when compressing the filtering membrane group, the leakage-proof effect is more excellent.

In order to achieve the above object, the present invention provides a cartridge type electrodialysis unit, which includes a housing box, a filtering membrane set and a cover, wherein the housing box includes: a diaphragm bearing seat; the diaphragm limiting wall is arranged on the diaphragm bearing seat in a surrounding manner; and a containing opening formed between the diaphragm bearing seat and the diaphragm limiting wall; wherein this filtration diaphragm group sets up on this diaphragm bears the seat and contradicts the inboard of this diaphragm spacing wall, and this filtration diaphragm group includes: a plurality of first ion exchange membranes and a plurality of second ion exchange membranes which are alternately arranged; and a plurality of flow channel separators disposed between the plurality of first ion exchange membranes and the plurality of second ion exchange membranes; and the cover body is arranged on the accommodating box body and comprises at least one opening, a body part and a pressing part, wherein the at least one opening penetrates through the body part, a first side of the body part, which is adjacent to the filtering membrane group, is provided with a peripheral area and an inner area, the inner area is more adjacent to the at least one opening than the peripheral area, and the pressing part is formed on the inner area.

A cartridge-style electrodialysis module, comprising: a plurality of card casket-like electrodialysis unit and a locating component, each this card casket-like electrodialysis unit includes an accommodation box body, a filter membrane group and a lid spare, and wherein this accommodation box body includes: a diaphragm bearing seat; the diaphragm limiting wall is arranged on the diaphragm bearing seat in a surrounding manner; and a containing opening formed between the diaphragm bearing seat and the diaphragm limiting wall; wherein this filtration diaphragm group sets up on this diaphragm bears the seat and contradicts the inboard of this diaphragm spacing wall, and this filtration diaphragm group includes: a plurality of first ion exchange membranes and a plurality of second ion exchange membranes which are alternately arranged; and a plurality of flow channel separators disposed between the plurality of first ion exchange membranes and the plurality of second ion exchange membranes; the cover body is arranged on the accommodating box body and comprises at least one opening, a body part and a pressing part, wherein the at least one opening penetrates through the body part, a first side of the body part, which is adjacent to the filtering membrane group, is provided with a peripheral area and an inner area, the inner area is more adjacent to the at least one opening than the peripheral area, and the pressing part is formed on the inner area; wherein the positioning component is arranged outside the diaphragm limiting wall, so that the plurality of cartridge type electrodialysis units are aligned with each other.

A cartridge-style electrodialysis module, comprising: a plurality of card casket-like electrodialysis unit and a locating component, each this card casket-like electrodialysis unit includes an accommodation box body, a filter membrane group and a lid spare, and wherein this accommodation box body includes: a diaphragm bearing seat; the diaphragm limiting wall is arranged on the diaphragm bearing seat in a surrounding manner; and a containing opening formed between the diaphragm bearing seat and the diaphragm limiting wall; wherein this filtration diaphragm group sets up on this diaphragm bears the seat and contradicts the inboard of this diaphragm spacing wall, and this filtration diaphragm group includes: a plurality of first ion exchange membranes and a plurality of second ion exchange membranes which are alternately arranged; and a plurality of flow channel separators disposed between the plurality of first ion exchange membranes and the plurality of second ion exchange membranes; the cover body is arranged on the accommodating box body and comprises at least one opening, a body part and a pressing part, wherein the at least one opening penetrates through the body part, a first side of the body part, which is adjacent to the filtering membrane group, is provided with a peripheral area and an inner area, the inner area is more adjacent to the at least one opening than the peripheral area, and the pressing part is formed on the inner area; the positioning component is disposed on a first side and a second side of each cartridge type electrodialysis unit, and the first side of each cartridge type electrodialysis unit is opposite to the second side of each cartridge type electrodialysis unit.

The utility model has the beneficial effects that: compared with the comparative example of the dialysis unit without the membrane limiting wall, the cartridge type electrodialysis unit provided by the utility model has the membrane limiting wall, so that the first ion exchange membrane, the second ion exchange membrane and the flow channel partition plate can be easily aligned and fixed on the membrane bearing seat in the process of stacking the filter membrane groups, the first ion exchange membrane, the second ion exchange membrane and the flow channel partition plate can be easily assembled even if the filter membrane groups with large sizes are still easily assembled without consuming extra manpower, the time and labor are saved in assembling the cartridge type electrodialysis unit, the first ion exchange membrane, the second ion exchange membrane and the flow channel partition plate can be more accurately aligned, the problem of internal water leakage caused by the position deviation of the membranes can be effectively reduced, and the risk of mixing purified water and sewage is eliminated. In addition, compared with the comparative example without the pressing part, the cassette type electrodialysis unit provided by the utility model has the pressing part arranged on the cover part, so that the cover part is combined with the accommodating box body, and meanwhile, the pressing stress is uniformly applied to the filtering membrane group, the filtering membrane group can achieve the required compression ratio of the membrane by a simple mode, the problem of uneven stress during the compression of the filtering membrane group is solved, and the more excellent leakage-proof effect can be provided.

The utility model is described in detail below with reference to the drawings and specific examples, but the utility model is not limited thereto.

Drawings

FIG. 1 is a perspective view of a cartridge-type electrodialysis unit according to an embodiment of the present invention;

FIG. 2 is an exploded view of a cartridge-type electrodialysis unit according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view of a cartridge-type electrodialysis unit according to an embodiment of the present invention;

FIGS. 4-6 are schematic views illustrating an assembly process of a cartridge type electrodialysis unit according to an embodiment of the present invention;

FIG. 7 is an exploded view of a cartridge-type electrodialysis module according to an embodiment of the present invention;

FIG. 8 is a perspective view of a cartridge-type electrodialysis module according to an embodiment of the present invention;

FIG. 9 is a side view of a cartridge electrodialysis module according to another embodiment of the utility model;

FIG. 10A is a perspective view of a second side of a cartridge-type electrodialysis unit according to another embodiment of the present invention;

FIG. 10B is a perspective view of a first side of a cartridge-type electrodialysis unit according to another embodiment of the present invention;

FIG. 11A is a perspective view of a second side of a cartridge-type electrodialysis unit according to another embodiment of the present invention;

FIG. 11B is a perspective view of a first side of a cartridge-type electrodialysis unit according to another embodiment of the present invention;

FIG. 12 is a perspective view of a cartridge-type electrodialysis module according to another embodiment of the present invention; and

fig. 13 is a perspective view of a cartridge-type electrodialysis module according to another embodiment of the utility model.

Wherein, the reference numbers:

1,1A,1B, a containing box body

2: filtering membrane group

3,3A,3B cover member

3S inner surface

5b clamping assembly

7b,7c,7d positioning assembly

10,10A,10B,10C,10D,20,30 cartridge type electrodialysis unit

10M,10N,20M,30M cartridge type electrodialysis module

11 diaphragm bearing seat

12 diaphragm limiting wall

13, an accommodating port

17c,17d,72b first positioning portion

27c,27d,73b a second positioning part

21 first ion exchange Membrane

21a upper surface

22 flow passage partition plate

23 second ion exchange Membrane

31 pressing part

32 main body part

33 opening of the container

41 first seal

42 second seal

42a first part

42b second part

43 third seal

44a,44b,44c,44d a fourth seal

51b,51 b', 51b ": first electrode cartridge

52b,52 b', a second electrode cartridge

53b third electrode Cartridge

54b screw member

71b limiting slide rail

71c,72d,73c,74d, recesses

72c,71d,73d,74c projections

121 upper edge of

301 hole

302 extended hole

321 peripheral region

322 inner region

511b first bonding part

521b second joint part

1100 large hole

1102 small hole

2101,2201,2301,3011 first group of holes

2102,2202,2302,3012 points of the second group of holes A, A

D1 first direction

D2 second direction

D3 third Direction

G is plane

L1, L2, L3 Length

S1 first side

S2 second side

T1, T2 thickness

T3 first thickness

T4 second thickness

W1, W2, W3 Width

Detailed Description

The utility model will be described in detail with reference to the following drawings, which are provided for illustration purposes and the like:

fig. 1 is a perspective view of a cartridge-type electrodialysis unit 10 according to an embodiment of the present invention. Fig. 2 is an exploded view of a cartridge-type electrodialysis unit 10 according to an embodiment of the present invention. Fig. 3 is a cross-sectional view of a cartridge-type electrodialysis unit 10 according to an embodiment of the present invention.

Referring to fig. 1 and fig. 2, the cartridge-type electrodialysis unit 10 includes a housing box 1, a filtering membrane set 2, and a cover 3. The filtering membrane group 2 is arranged between the accommodating box body 1 and the cover body component 3. As shown in fig. 1, the outer side of the receiving box 1 has a thickness in the first direction D1, a length L1 in the second direction D2, and a width W1 in the third direction D3. The first direction D1, the second direction D2 and the third direction D3 are perpendicular to each other, for example. The outer side of the cover element 3 has a length L2 in the second direction D2 and a width W2 in the third direction D3. Length L1 may be equal to length L2 and width W1 may be equal to width W2, but is not limited thereto. Unless otherwise specified, all the elements are defined as having a thickness formed in a first direction, a length formed in a second direction, and a width formed in a third direction. In fig. 1, the cartridge type electrodialysis unit 10 of the present invention is vertically disposed, for example, the length direction (i.e. the second direction D2) of the receiving box 1 is perpendicular to the plane G (e.g. the plane formed by the first direction D1 and the third direction D3 in fig. 1) on which the cartridge type electrodialysis unit 10 is disposed, but the present invention is not limited thereto, and the cartridge type electrodialysis unit 10 can also be horizontally disposed, for example, the length direction (i.e. the second direction D2) of the receiving box 1 is parallel to the plane G, as shown in fig. 4-6.

Referring to fig. 2, the accommodating box 1 includes a film bearing seat 11, a film limiting wall 12 and an accommodating opening 13. The diaphragm limiting wall 12 is arranged on the diaphragm bearing seat 11 in a surrounding manner. The accommodating opening 13 is formed between the diaphragm bearing seat 11 and the diaphragm limiting wall 12. The accommodating case 1 is, for example, a rectangular box-shaped structure, but the present invention is not limited thereto.

The filtering membrane group 2 is arranged on the membrane bearing seat 11 and abuts against the inner side of the membrane limiting wall 12. That is, the filtering membrane group 2 is disposed in the accommodating opening 13. The filtering membrane group 2 comprises a plurality of first ion exchange membranes 21 and a plurality of second ion exchange membranes 23 which are alternately arranged, and comprises a plurality of flow channel partition plates 22, wherein the flow channel partition plates 22 are arranged between the first ion exchange membranes 21 and the second ion exchange membranes 23. The first ion exchange membrane 21, the second ion exchange membrane 23 and the flow channel partition plate 22 can be regarded as a plurality of membrane sheets in the filtration membrane group 2. In one embodiment, the first ion exchange membrane 21 is an anion exchange membrane and the second ion exchange membrane 23 is a cation exchange membrane. In another embodiment, the first ion exchange membrane 21 is a cation exchange membrane and the second ion exchange membrane 23 is an anion exchange membrane. The dimensions (such as length and width) of each first ion exchange membrane 21, each second ion exchange membrane 23 and each flow channel partition 22 in the filter membrane stack 2 may be the same as each other, and may correspond to the dimensions (such as length and width) of the receiving opening 13 (or the exposed area of the membrane carrier seat 11 defined by the membrane limiting wall 12), but are not limited thereto. The user can select the filter membrane units 2 with different sizes or different numbers of membranes according to the requirements (such as the conditions of membrane compression and water purification standards in the filter membrane units 2). In some embodiments, the length L3 of the receiving opening 13 may be between 40 cm and 160cm, and the width W3 of the receiving opening 13 may be between 20 cm and 80cm, but the utility model is not limited thereto.

Because the size of the accommodating opening 13 surrounded by the membrane limiting wall 12 corresponds to the size of the first ion exchange membrane 21, the second ion exchange membrane 23 and the flow channel partition plate 22, when the first ion exchange membrane 21, the second ion exchange membrane 23 and the flow channel partition plate 22 are placed into the accommodating opening 13 one by one, the inner side of the membrane limiting wall 12 can enable the first ion exchange membrane 21, the second ion exchange membrane 23 and the flow channel partition plate 22 to be aligned with each other and fixed on the membrane bearing seat 11, the first ion exchange membrane 21, the second ion exchange membrane 23 and the flow channel partition plate 22 do not need to be fixed by using viscose glue, extra manpower is not needed to be consumed to align the first ion exchange membrane 21, the second ion exchange membrane 23 and the flow channel partition plate 22 with each other, and even if the large-sized filtering membrane group 2 can be easily assembled. Compared with the comparative example of the electrodialysis unit without the membrane limiting wall, the cassette electrodialysis unit 10 can be assembled in a time-saving and labor-saving manner due to the membrane limiting wall 12, and the first ion exchange membrane 21, the second ion exchange membrane 23 and the flow channel partition plate 22 can be aligned more accurately, so that the internal water leakage problem caused by the position deviation of the membrane can be effectively reduced, and the risk of mixing purified water and sewage can be eliminated. In some embodiments, the thickness of membrane limiting wall 12 in first direction D1 may be equal to or greater than the thickness of filter membrane group 2 in first direction D1.

After the filtering membrane group 2 is disposed on the membrane bearing seat 11, the cover member 3 may be disposed on the accommodating box 1 and the filtering membrane group 2. That is, the cover member 3 is detachably combined with the accommodating box 1, and the filtering membrane group 2 is disposed between the accommodating box 1 and the cover member 3. Cover member 3 includes at least one opening 33, a body portion 32 and a pressing portion 31, wherein opening 33 penetrates body portion 32, and body portion 32 has a first side S1 adjacent to filter membrane group 2 and a second side S2 away from filter membrane group 2, and first side S1 and second side S2 are located at two opposite sides of body portion 32. The first side S1 of the main body 32 has a peripheral region 321 and an inner region 322, the inner region 322 is closer to the opening 33 than the peripheral region 321, and the pressing portion 31 is formed on the inner region 322, for example, surrounding the opening 33. That is, the pressing portion 31 is a protruding portion on the first side S1 of the body portion 32. In the embodiment, the central portion of the cover member 3 has an opening 33, but the utility model is not limited thereto, and in other embodiments, the central portion of the cover member 3 may have a plurality of openings. The dimensions (e.g., length and width) of pressing portion 31 may correspond to (e.g., be equal to, slightly larger than, or slightly smaller than) the dimensions (e.g., length and width) of filtering membrane group 2. After the cover member 3 is detachably combined with the accommodating box 1, the pressing portion 31 can provide a planar pressing stress to uniformly press the filtering membrane set 2, so that the thickness of the filtering membrane set 2 is reduced (as shown in fig. 3), and compared with a comparative example in which the filtering membrane set is pressed by a point-like pressing stress, the pressing portion 31 of the present invention solves the problem of non-uniform stress of the filtering membrane set 2, and provides a more excellent leakage-proof effect.

Referring to fig. 2, in some embodiments, the cartridge type electrodialysis unit 10 further includes a first sealing member 41 and a second sealing member 42. The first sealing member 41 is disposed between the membrane bearing seat 11 and the filtering membrane group 2. For example, the first sealing member 41 is conformal to the contour of the inner surface of the film carrier 11, and is attached to the inner surface of the film carrier 11, and has a size corresponding to the receiving opening 13. The second sealing member 42 is provided between the pressing portion 31 and the filter membrane group 2 and between the peripheral region 321 and the membrane stopper wall 12. Further, the second seal 42 includes a first portion 42a and a second portion 42 b. The cover member 3 has an inner surface 3S corresponding to the first side S1. The first portion 42a of the second sealing member 42 is disposed on the inner surface 3S corresponding to the pressing portion 31, conforms to the contour of the inner surface 3S corresponding to the pressing portion 31, and is attached to the inner surface 3S corresponding to the pressing portion 31. The second portion 42b of the second sealing member 42 is disposed on the inner surface 3S corresponding to the peripheral region 321, conforms to the contour of the inner surface 3S corresponding to the peripheral region 321, and is attached to the inner surface 3S corresponding to the peripheral region 321. The peripheral region 321 of the cover element 3 and the second portion 42b of the second sealing element 42 arranged thereon are intended for detachable connection to the upper edge 121 of the diaphragm limiting wall 12. The pressing portion 31 of the cover member 3 and the first portion 42a of the second seal member 42 provided thereon are for detachably connecting to the filtering membrane group 2 (see fig. 3). The pressing portion 31 of the cover member 3 can be used to compress the filter membrane sheet group 2 (shown in fig. 3). In some embodiments, the first sealing member 41 and the second sealing member 42 can be any soft cushion material, such as silicon rubber, Polyethylene (PE) or other suitable materials. The first sealing member 41 can provide water tightness between the first ion exchange membrane (e.g. the first ion exchange membrane 21 or the second ion exchange membrane 23) closest to the membrane carrier seat 11 and the membrane carrier seat 11. The second seal 42 may provide water tightness between the first sheet of ion exchange membrane 21 (in the present embodiment, the first ion exchange membrane 21, but may be the second ion exchange membrane 23 in other embodiments) closest to the cover member 3 and the cover member 3.

Referring to fig. 1 and 2, the cover member 3 further has a plurality of holes 301 respectively extending along a first direction D1 and a plurality of extending holes 302 respectively extending along a second direction D2, wherein the first direction D1 is parallel to the normal direction of the inner surface 3S, and the second direction D2 is perpendicular to the normal direction of the inner surface 3S. The holes 301 of the cover member 3 pass through the pressing portion 31 and the body portion 32, and the extending holes 302 communicate the corresponding holes 301 with the opening 33. Wherein the holes 301 of the cover member 3 include a first group of holes 3011 and a second group of holes 3012, the first group of holes 3011 and the second group of holes 3012 are formed on the opposite sides (e.g., upper side and lower side) of the opening 33, the holes 301 in the first group of holes 3011 are separated from each other along a third direction D3, and the holes 301 in the second group of holes 3012 are separated from each other along the third direction D3. In the second direction D2, the extended holes 302 of the holes 301 in the first group of holes 3011 are separated from the extended holes 302 of the holes 301 in the second group of holes 3012. In other words, the extending holes 302 on the upper side and the extending holes 302 on the lower side are respectively communicated with the first group of holes 3011 and the second group of holes 3012 that do not overlap with each other in the second direction D2.

Also, each first ion exchange membrane 21 includes a first group of holes 2101 and a second group of holes 2102 disposed on the opposite 2 sides (e.g., upper and lower sides), each second ion exchange membrane 23 includes a first group of holes 2301 and a second group of holes 2302 disposed on the opposite 2 sides (e.g., upper and lower sides), and each flow channel partition 22 includes a first group of holes 2201 and a second group of holes 2202 disposed on the opposite 2 sides (e.g., upper and lower sides). The membrane holder 11 includes a plurality of large holes 1100 and a plurality of small holes 1102, wherein the small holes 1102 are disposed on the opposite sides (e.g., upper side and lower side) of the large holes 1100, and the small holes 1102 include a first group of holes (not shown) disposed on the upper side of the large holes 1100 and a second group of holes 1102 disposed on the lower side of the large holes 1100.

With the aid of the membrane limiting walls 12, the first group of holes (not shown) of the membrane holder 11, the first group of holes 3011 of the cover member 3, the first group of holes 2101 of each first ion exchange membrane 21, the first group of holes 2301 of each second ion exchange membrane 23, and the first group of holes 2201 of each flow channel partition 22 may correspond to each other; the second group holes 1102 of the membrane carrier 11, the second group holes 3012 of the cover member 3, the second group holes 2102 of the first ion exchange membranes 21, the second group holes 2302 of the second ion exchange membranes 23, and the second group holes 2202 of the flow channel partitions 22 may correspond to each other.

Referring to fig. 3, the cover member 3 has an inner surface 3S corresponding to the first side S1, and a thickness T1 formed by the pressing portion 31 and the main body portion 32 located in the inner region 322 in a normal direction F3 of the inner surface 3S is greater than a thickness T2 formed by the main body portion 32 in the peripheral region 321. Before the filter membrane group 2 is compressed by the pressing portion 31, the filter membrane group 2 has a first thickness T3. In the present embodiment, the upper surface 21a of the first ion exchange membrane 21 of the filter membrane group 2 farthest from the membrane supporting seat 11 may be coplanar with the upper edge 121 of the membrane limiting wall 12 before the filter membrane group 2 is compressed by the pressing portion 31, but the present invention is not limited thereto. After the filter membrane group 2 is compressed by the pressing portion 31, the filter membrane group 2 has a second thickness T4, wherein the second thickness T4 is smaller than the first thickness T3. The second thickness T4 has a compression percentage R for the first thickness T3 (first thickness T3-second thickness T4)/first thickness T3, and the compression percentage R may range from 3% to 15%, for example, from 7% to 10%. Therefore, as long as the thickness formed by the pressing portion 31 and the body portion 32 located in the inner region 322, the thickness of the diaphragm limiting wall 12 and the thickness of the filtering membrane group 2 are designed, and the cover member 3 is completely covered on the accommodating box body 1, the required compression percentage R of the filtering membrane group 2 can be obtained, and the required pressing degree of the filtering membrane group 2 can be satisfied.

In some embodiments, the number of membrane pairs formed by the first ion exchange membrane 21 and the second ion exchange membrane 23 in the filter membrane set 2 may be between 20 pairs and 50 pairs, the compression percentage R of the filter membrane set 2 may range from 3% to 15%, the water production flow rate of a single cartridge type electrodialysis unit 10 may range from 10LPM to 100LPM, and the desalination efficiency may range from 10% to 40%, but the utility model is not limited thereto. It can be seen that the cartridge-type electrodialysis unit 10 according to an embodiment of the present invention can be assembled easily, aligned accurately, and water-tight, and can maintain a good water flow rate and desalination efficiency.

Fig. 4-6 are schematic diagrams illustrating an assembly process of the cartridge-type electrodialysis unit 10 according to an embodiment of the present invention.

Referring to fig. 4, firstly, a containing box 1 is provided, and then the second ion exchange membrane 23, the flow channel partition 22, the first ion exchange membrane 21 and the flow channel partition 22 in the filtering membrane group 2 are sequentially placed in the containing opening 13. In the present embodiment, the uppermost membrane (i.e. the membrane farthest from the membrane support base 11) in the filtration membrane stack 2 is the first ion exchange membrane 21, and the lowermost membrane is the second ion exchange membrane 23, but the utility model is not limited thereto.

Referring to fig. 5, when any one of the membranes of the first ion exchange membrane 21, the flow channel partition 22, or the second ion exchange membrane 23 is inserted into the receiving opening 13, since the size of the membrane bearing seat 11 is equal to that of the filtering membrane group 2, the membrane can be automatically modified and arranged to fall to the angular position of the membrane bearing seat 11 by the membrane limiting wall 12 in the process of sliding into the receiving box 1, so that the filtering membrane group 2 is placed on the membrane bearing seat 11 in order, and the position of each membrane is adjusted one by one without manpower to align the membranes, even if the size of the filtering membrane group 2 is large, the operation can be simply and quickly performed in the same way, thereby greatly improving the assembly efficiency, and ensuring the position relationship of each membrane, thereby effectively reducing the problem of internal water leakage caused by the position deviation of the membrane, and further eliminating the risk of mixing clean water and sewage.

Referring to fig. 6, after the filtering membrane group 2 is placed in the receiving opening 13, the pressing portion 31 of the cover member 3 faces the filtering membrane group 2, and the cover member 3 is detachably combined with the filtering membrane group 2 and the receiving box 1, the upper edge 121 of the receiving box 1 is tightly sealed with the peripheral region 321 of the main body 32 of the cover member 3 and the first portion 42a (not shown) of the second sealing member 42 thereon, so that the filtering membrane group 2 is compressed by the pressing portion 31, as shown in fig. 3.

Fig. 7 is an exploded view of a cartridge-type electrodialysis module 10M according to an embodiment of the utility model. Fig. 8 is a perspective view of a cartridge-type electrodialysis module 10M according to an embodiment of the utility model.

Referring to fig. 7 and 8, the cartridge-type electrodialysis module 10M includes a first electrode cartridge 51B, a second electrode cartridge 52B, a plurality of cartridge-

type electrodialysis units

10A and 10B, a

third sealing member

43, 2 fourth sealing members 44a and 44B, a clamping member 5B, and a positioning member 7B. The cartridge

type electrodialysis units

10A and 10B are disposed between the first electrode cartridge 51B and the second electrode cartridge 52B. The first electrode cartridge 51b and the second electrode cartridge 52b can be used for operating an electric field and can be used as a positive electrode or a negative electrode, respectively.

Each cartridge

type electrodialysis unit

10A and 10B in fig. 7 and 8 is the same as the cartridge type electrodialysis unit 10 shown in fig. 1 and 2, and the description thereof will not be repeated. In the present embodiment, only 2 cartridge

type electrodialysis units

10A and 10B are illustrated for example, but the present invention is not limited thereto, and the cartridge type electrodialysis module 10M of the present invention can include any number of cartridge type electrodialysis units, depending on the membrane number of anion exchange membranes and cation exchange membranes. Generally speaking, in the comparative example where only screws are used to fix all the anion and cation exchange membranes and electrode plates or the comparative example where only screws are used to penetrate through the pressing plate to tightly press the anion and cation exchange membranes and the electrode plates, the number of membrane pairs of the anion and cation exchange membranes can only be 400 at most, otherwise the pressing stress at the center of the anion and cation membrane stack is too small, and the membrane layer in the middle will slide down. In contrast, the cartridge-type electrodialysis module 10M of the present invention can include any number of cartridge-

type electrodialysis units

10A,10B …, and each of the cartridge-

type electrodialysis units

10A,10B … can have enough compressive stress for the anion exchange membrane and the cation exchange membrane to achieve the desired compression ratio, so that the cartridge-type electrodialysis module 10M can have any number of membrane pairs (i.e. greater than 400 pairs) of anion exchange membrane and cation exchange membrane. Furthermore, if an abnormality is detected in the

cartridge electrodialysis units

10A and 10B … during the electrodialysis process, the electrodialysis process does not need to be interrupted for a long time as the problem cartridge electrodialysis units are processed (e.g. one of the cartridge electrodialysis units is easily removed or replaced), which is more time-saving and labor-saving than the conventional electrodialysis module.

Also, a third sealing member 43 may be disposed between the adjacent cartridge

type electrodialysis units

10A and 10B to increase water tightness. In the present embodiment, the third sealing member 43 conforms to the contour of the surface of the first side (i.e. the side away from the filtering membrane group 2) of the membrane supporting seat 11 of the cartridge-type electrodialysis unit 10B and is attached to the first side (i.e. the side away from the filtering membrane group 2) of the membrane supporting seat 11 of the cartridge-type electrodialysis unit 10B, but the utility model is not limited thereto, and in other embodiments, the third sealing member 43 can conform to the contour of the surface of the second side (i.e. the side away from the filtering membrane group 2) of the cover member 3 of the cartridge-type electrodialysis unit 10A and is attached to the second side (i.e. the side away from the filtering membrane group 2) of the cover member 3 of the cartridge-type electrodialysis unit 10A. In addition, the number of the third sealing members 43 may depend on the number of cartridge type electrodialysis units, and when the number of the cartridge type electrodialysis units is N (N is a positive integer), the number of the third sealing members 43 may be N-1, as long as the third sealing member 43 is disposed between each adjacent cartridge type electrodialysis units.

In some embodiments, the 2 fourth seals 44 include fourth seals 44a and 44B, and the fourth seals 44a and 44B are respectively disposed between the first electrode cartridge 51B and the cartridge electrodialysis unit 10A of the

cartridge electrodialysis units

10A and 10B that is closest to the first electrode cartridge 51B, and between the second electrode cartridge 52B and the cartridge electrodialysis unit 10B of the

cartridge electrodialysis units

10A and 10B that is closest to the second electrode cartridge 52B. In the present embodiment, the fourth sealing element 44a is conformal to the contour of the surface of the first side (i.e. the side away from the filtering membrane set 2) of the membrane supporting seat 11 of the cartridge type electrodialysis unit 10A, and is attached to the first side (i.e. the side away from the filtering membrane set 2) of the membrane supporting seat 11 of the cartridge type electrodialysis unit 10A; the fourth sealing member 44B is conformal to the contour of the surface of the first side of the second electrode cartridge 52B (i.e., the side adjacent to the cartridge electrodialysis unit 10B) and attached to the first side of the second electrode cartridge 52B (i.e., the side adjacent to the cartridge electrodialysis unit 10B), however, the present invention is not limited thereto, and in other embodiments, the fourth sealing member 44a is conformal to the contour of the surface of the second side of the first electrode cartridge 51B (i.e., the side adjacent to the cartridge electrodialysis unit 10A) and attached to the second side of the first electrode cartridge 51B; the fourth sealing member 44B is conformal to the surface of the second side S2 (i.e. the side away from the filter membrane set 2) of the cover member 3 of the cartridge type electrodialysis unit 10B, and is attached to the second side S2 (i.e. the side away from the filter membrane set 2) of the cover member 3 of the cartridge type electrodialysis unit 10B. In the present embodiment, the shapes of the 2

fourth sealing members

44a and 44b may be different from each other. In other embodiments, the 2

fourth seals

44a and 44b may have the same shape as each other.

In some embodiments, the positioning component 7B is disposed outside the diaphragm retaining wall 12 of the cartridge

type electrodialysis units

10A and 10B and outside the first electrode cartridge 51B and the second electrode cartridge 52B, so that the cartridge

type electrodialysis units

10A and 10B, the first electrode cartridge 51B and the second electrode cartridge 52B are aligned with each other. For example, the positioning assembly 7b includes a plurality of stopper rails 71b, a plurality of first positioning portions 72b, and a plurality of second positioning portions 73 b. The limit slide rails 71B are disposed on the same side of the cartridge

type electrodialysis units

10A and 10B. The first positioning portion 72b is formed outside the diaphragm stopper wall 12 and is coupled to the stopper rail 71 b. The second positioning portion 73b is formed at the outer sides of the first electrode casing 51b and the second electrode casing 52b and is correspondingly combined with the limit slide rail 71 b. The first positioning portion 72b and the second positioning portion 73b are grooves, for example. By means of the combination of the position-limiting slide rail 71B and the first and second positioning portions 72B and 73B, the cartridge

type electrodialysis units

10A and 10B, the first and second electrode cartridges 51B and 52B can be easily aligned with each other. In other embodiments, the positioning component 7B may not be disposed outside the diaphragm retaining wall 12 of the cartridge-

type electrodialysis units

10A and 10B (described in detail later).

In some embodiments, the clamping assembly 5b includes a plurality of first coupling portions 511b, a plurality of second coupling portions 521b, and a plurality of screw members 54 b. The first coupling portion 511b is formed at the outer side of the first electrode cartridge 51 b. The second coupling portion 521b is formed at the outer side of the second electrode case 52 b. The screw members 54B are respectively connected to the first coupling portion 511B and the second coupling portion 521B, so that the first electrode cartridge 51B, the cartridge

type electrodialysis units

10A and 10B, and the second electrode cartridge 52B are fixed to each other. Since the filtering membrane set 2 in each cartridge

type electrodialysis unit

10A and 10B of the present invention achieves the desired compression ratio, the clamping component 5B only needs to apply a lower force to tightly press the first electrode cartridge 51B, the cartridge

type electrodialysis units

10A and 10B, and the second electrode cartridge 52B, so as to satisfy the requirement of water tightness of the cartridge type electrodialysis module 10M.

In some embodiments, the clamping assembly 5B may not include the first combining portion 511B, the second combining portion 521B and the screw member 54B, whereas the clamping assembly 5B may include fixing members (not shown) respectively disposed at an outer side of the first electrode cartridge 51B, an outer side of the second electrode cartridge 52B and an outer side of the cartridge

type electrodialysis units

10A and 10B, and the first electrode cartridge 51B, the second electrode cartridge 52B and the cartridge

type electrodialysis units

10A and 10B can be tightly pressed and fixed by the fixing members of any two adjacent first electrode cartridges 51B, cartridge

type electrodialysis units

10A and 10B and second electrode cartridge 52B being correspondingly combined with each other, so as to satisfy the requirement of the cartridge type electrodialysis module 10M for water tightness. The fasteners may be, for example, snaps, latches, or other suitable fasteners (not shown).

In some embodiments, rollers (not shown) may be disposed under the first electrode cartridge 51B, the second electrode cartridge 52B and the cartridge

type electrodialysis units

10A and 10B, respectively, so that the first electrode cartridge 51B, the second electrode cartridge 52B and the cartridge

type electrodialysis units

10A and 10B can be moved in a more convenient manner.

Fig. 9 is a side view of a cartridge-type electrodialysis module 10N according to another embodiment of the present invention. The cartridge type electrodialysis module 10N is different from the cartridge type electrodialysis module 10M in the number of cartridge type electrodialysis units and the number of electrode cartridges, and other parts that are the same or similar will not be described again.

Referring to fig. 9, the cartridge type electrodialysis module 10N includes a first electrode cartridge 51B, a second electrode cartridge 52B, a third electrode cartridge 53B, a plurality of cartridge

type electrodialysis units

10A,10B,10C,10D …, a plurality of third sealing members 43, 4 fourth sealing members 44a,44B,44C, and 44D, a clamping member 5B (shown in fig. 8), and a positioning member 7B (shown in fig. 8). However, the present invention is not limited thereto, and in other embodiments, the cartridge type electrodialysis module 10N may not include the holding member 5 b. Each

cartridge electrodialysis unit

10A,10B,10C,10D … is identical in structure to the cartridge electrodialysis unit 10. The third electrode cartridge 53B is disposed between the first electrode cartridge 51B and the second electrode cartridge 52B, and is inserted into the cartridge

type electrodialysis units

10A,10B,10C,10D …. For example, the third electrode cartridge 53b is disposed between the cartridge type electrodialysis units 10C and 10D. The first electrode cartridge 51b, the second electrode cartridge 52b and the third electrode cartridge 53b can be used for operating an electric field. As the number of cartridge

type electrodialysis units

10A,10B,10C,10D … increases, the distance between the first electrode cartridge 51B and the second electrode cartridge 52B also increases. If the distance between the first electrode cartridge 51b and the second electrode cartridge 52b is too long, the current efficiency (equivalent to desalination efficiency) may be reduced when the desalination reaction is performed. Therefore, when the amount of water to be treated is increased, so that the required number of

cartridge electrodialysis units

10A,10B,10C,10D … is increased, the third electrode cartridge 53B can be inserted into the

cartridge electrodialysis units

10A,10B,10C,10D …, so that the distance between the two electrodes is maintained in an optimum state, and thus good current efficiency and desalination efficiency can be maintained.

A third seal 43 is provided between each adjacent 2

cartridge electrodialysis units

10A,10B,10C,10D …. The 4 fourth seals include

fourth seals

44a,44b,44c, and 44 d. The fourth sealing members 44a,44B,44C and 44D are respectively disposed between the first electrode cartridge 51B and the cartridge type electrodialysis unit 10A, between the second electrode cartridge 52B and the cartridge type electrodialysis unit 10B, between the third electrode cartridge 53B and the cartridge type electrodialysis unit 10C, and between the third electrode cartridge 53B and the cartridge type electrodialysis unit 10D.

Fig. 10A is a perspective view of a second side of a cartridge type electrodialysis unit 20 according to another embodiment of the present invention. Fig. 10B is a perspective view of a first side of a cartridge-type electrodialysis unit 20 according to another embodiment of the present invention.

The cartridge electrodialysis unit 20 is similar to the cartridge electrodialysis unit 10A in structure, and the cartridge electrodialysis unit 20 is further provided with a first positioning portion 17c, the same and/or similar elements are provided with the same and/or similar reference numerals, and the repeated points will not be described in detail.

Referring to fig. 10A and 10B, the cartridge-type electrodialysis unit 20 includes a housing box 1A, a filtering membrane set 2 and a cover 3A. The first positioning portions 17c are disposed on the first side (corresponding to the first side S1) and the second side (corresponding to the second side S2) of the cartridge type electrodialysis unit 20. In the present embodiment, the first positioning portion 17c includes a recessed portion 71c provided on the second side and a protruding portion 72c provided on the first side. For example, the concave portion 71c is disposed on the second side of the cover member 3A, and penetrates through a portion of the cover member 3A from the second side of the cover member 3A toward the membrane carrier 11, surrounding the opening 33, the first group of holes 3011 and the second group of holes 3012; the protrusion 72c is disposed on the first side of the accommodating case 1A (i.e. the first side of the film carrier 11), and protrudes from the first side of the film carrier 11 toward the direction away from the cover 3A, surrounding the large hole 1100 and the small hole 1102 (viewed from the first side). The recessed portion 71c and the protruding portion 72c are closed rectangles, for example, respectively, but the present invention is not limited thereto. The concave portion 71c and the convex portion 72c disposed on the adjacent 2 cartridge type electrodialysis units 20 can be correspondingly engaged with each other (shown in fig. 12), so that a plurality of cartridge type electrodialysis units 20 can be positioned by the corresponding first positioning portions 17c (i.e. the concave portion 71c and the convex portion 72 c).

Fig. 11A is a perspective view of a second side of a cartridge type electrodialysis unit 30 according to another embodiment of the present invention. Fig. 11B is a perspective view of a first side of a cartridge-type electrodialysis unit 30 according to another embodiment of the present invention.

The cartridge electrodialysis unit 30 is similar to the cartridge electrodialysis unit 10A, and the first positioning portion 17d is further disposed on the cartridge electrodialysis unit 30, and the same and/or similar elements are the same and/or similar elements, and the description thereof will not be repeated.

Referring to fig. 11A and 11B, the cartridge-type electrodialysis unit 30 includes a housing box 1B, a filtering membrane set 2, and a cover 3B. The first positioning portions 17d are disposed on the first side (corresponding to the first side S1) and the second side (corresponding to the second side S2) of the cartridge type electrodialysis unit 30. In the present embodiment, the first positioning portion 17d includes a protruding portion 71d provided on the second side and a recessed portion 72d provided on the first side. For example, the protrusion 71d is disposed on the second side of the cover member 3B, protruding from the second side of the cover member 3B in a direction away from the film sheet loading seat 11, and surrounds the opening 33, the first group of holes 3011 and the second group of holes 3012 (viewed from the second side); the recess 72d is disposed on the first side of the accommodating case 1B (i.e. the first side of the film carrier 11), and penetrates a portion of the film carrier 11 from the first side of the film carrier 11 toward the cover 3B, surrounding the large hole 1100 and the small hole 1102. The recessed portion 72d and the protruding portion 71d are closed rectangles, for example, respectively, but the present invention is not limited thereto. The concave portion 72d and the convex portion 71d disposed on the adjacent 2 cartridge type electrodialysis units 30 can be correspondingly engaged with each other (shown in fig. 13), so that a plurality of cartridge type electrodialysis units 30 can be positioned by the corresponding first positioning portions 17d (i.e. the convex portion 71d and the concave portion 72 d).

Fig. 12 is a perspective view of a cartridge-type electrodialysis module 20M according to another embodiment of the utility model. In the present embodiment, the cartridge electrodialysis module 20M is different from the cartridge electrodialysis module 10M in that the cartridge electrodialysis module 20M may not have a clamping element, and the positioning element is different, and other similar elements will not be described again. In other embodiments, the cartridge electrodialysis module 20M can have a clamping component.

Referring to fig. 12, the cartridge-type electrodialysis module 20M includes a first electrode cartridge 51B ', a second electrode cartridge 52B', a plurality of cartridge-

type electrodialysis units

20A and 20B, and a positioning component 7 c. The cartridge

type electrodialysis units

20A and 20B are disposed between the first electrode cartridge 51B 'and the second electrode cartridge 52B'. The cartridge

type electrodialysis units

20A and 20B are the same as the cartridge type electrodialysis unit 20 shown in FIG. 10A and FIG. 10B, respectively. Cartridge electrodialysis module 20M can include any number of cartridge electrodialysis units.

The positioning element 7c is disposed on a first side (corresponding to the first side of the first electrode cartridge 51B ') and a second side (corresponding to the second side of the second electrode cartridge 52B') of each cartridge

type electrodialysis unit

20A and 20B, the first side of each cartridge

type electrodialysis unit

20A and 20B is opposite to the second side of each cartridge

type electrodialysis unit

20A and 20B, and the second side of the cartridge type electrodialysis unit 20A can be adjacent to the first side of the cartridge type electrodialysis unit 20B among 2 cartridge

type electrodialysis units

20A and 20B adjacent to each other. Further, the positioning component 7c includes a plurality of first positioning portions 17c disposed on the cartridge

type electrodialysis units

20A and 20B and a plurality of second positioning portions 27c disposed on the first electrode cartridge 51B 'and the second electrode cartridge 52B', so that the cartridge

type electrodialysis units

20A and 20B, the first electrode cartridge 51B 'and the second electrode cartridge 52B' are aligned with each other.

For example, the first positioning portion 17c includes a protrusion 72c disposed on a first side of each cartridge

type electrodialysis unit

20A and 20B and a recess 71c disposed on a second side of each cartridge

type electrodialysis unit

20A and 20B, and the protrusion 72c and the recess 71c of the adjacent cartridge

type electrodialysis units

20A and 20B are correspondingly combined. The second positioning portions 27c are disposed on a side of the first electrode cartridge 51B 'adjacent to the cartridge

type electrodialysis units

20A and 20B and a side of the second electrode cartridge 52B' adjacent to the cartridge

type electrodialysis units

20A and 20B, and the second positioning portions 27c and the corresponding first positioning portions 17c are correspondingly combined with each other. The second positioning portion 27c includes a concave portion 73c disposed on the first electrode cartridge 51b 'and a convex portion 74c disposed on the second electrode cartridge 52 b'.

In the present embodiment, the concave portion 73c of the first electrode cartridge 51 b' and the convex portion 72c of the cartridge type electrodialysis unit 20A are correspondingly engaged with each other; the concave part 71c of the cartridge type electrodialysis unit 20A and the convex part 72c of the cartridge type electrodialysis unit 20B are correspondingly clamped; the concave portion 71c of the cartridge type electrodialysis unit 20B is correspondingly engaged with the convex portion 74c of the second electrode cartridge 52B'.

Fig. 13 is a perspective view of a cartridge-type electrodialysis module 30M according to another embodiment of the utility model. In the present embodiment, the cartridge-type electrodialysis module 30M is different from the cartridge-type electrodialysis module 10M in that the cartridge-type electrodialysis module 30M may not have a clamping component, and the positioning component is different in style, and other similar components will not be described again. In other embodiments, the cartridge electrodialysis module 30M can have a clamping assembly.

Referring to fig. 13, the cartridge-type electrodialysis module 30M includes a first electrode cartridge 51B ", a second electrode cartridge 52B", a plurality of cartridge-

type electrodialysis units

30A and 30B, and a positioning component 7 d. The cartridge

type electrodialysis units

30A and 30B are disposed between the first electrode cartridge 51B 'and the second electrode cartridge 52B'. The cartridge

type electrodialysis units

30A and 30B are the same as the cartridge type electrodialysis unit 30 shown in FIG. 11A and FIG. 11B, respectively. Cartridge electrodialysis module 30M can include any number of cartridge electrodialysis units.

The positioning element 7d is disposed on a first side (corresponding to the first side of the first electrode cartridge 51B ") and a second side (corresponding to the second side of the second electrode cartridge 52B") of each cartridge

type electrodialysis unit

30A and 30B, the first side of each cartridge

type electrodialysis unit

30A and 30B is opposite to the second side of each cartridge

type electrodialysis unit

30A and 30B, and the second side of the cartridge type electrodialysis unit 30A can be adjacent to the first side of the cartridge type electrodialysis unit 30B among 2 cartridge

type electrodialysis units

30A and 30B adjacent to each other. Further, the positioning component 7d includes a plurality of first positioning portions 17d disposed on the cartridge

type electrodialysis units

30A and 30B and a plurality of second positioning portions 27d disposed on the first electrode cartridge 51B "and the second electrode cartridge 52B", so that the cartridge

type electrodialysis units

30A and 30B, the first electrode cartridge 51B ", and the second electrode cartridge 52B" are aligned with each other.

For example, the first positioning portion 17d includes a recess 72d disposed on a first side of each of the cartridge

type electrodialysis units

30A and 30B and a protrusion 71d disposed on a second side of each of the cartridge

type electrodialysis units

30A and 30B, and the protrusion 71d of the adjacent cartridge

type electrodialysis units

30A and 30B is correspondingly combined with the recess 72 d. The second positioning portions 27d are disposed on a side of the first electrode cartridge 51B ″ adjacent to the cartridge

type electrodialysis units

30A and 30B and a side of the second electrode cartridge 52B ″ adjacent to the cartridge

type electrodialysis units

30A and 30B, and the second positioning portions 27d and the corresponding first positioning portions 17d are correspondingly combined with each other. The second positioning portion 27d includes a protruding portion 73d disposed on the first electrode cartridge 51b "and a recessed portion 74d disposed on the second electrode cartridge 52 b".

In the present embodiment, the protrusion 73d of the first electrode cartridge 51b ″ and the recess 72d of the cartridge type electrodialysis unit 30A are correspondingly engaged with each other; the convex part 71d of the cartridge type electrodialysis unit 30A and the concave part 72d of the cartridge type electrodialysis unit 30B are correspondingly clamped; the protrusion 71d of the cartridge type electrodialysis unit 30B is correspondingly engaged with the recess 74d of the second electrode cartridge 52B ".

In some embodiments,

cartridge electrodialysis modules

20M and 30M may each include a third electrode cartridge.

It is to be understood that different features of the above-described embodiments of the utility model may be combined with each other.

The utility model provides a cartridge type electrodialysis unit and a cartridge type electrodialysis module. The cartridge type electrodialysis unit comprises a containing box body, a filtering membrane set and a cover body. The accommodating box body comprises a diaphragm bearing seat, a diaphragm limiting wall and an accommodating opening. The diaphragm limiting wall is arranged on the diaphragm bearing seat in a surrounding mode. The accommodating port is formed between the diaphragm bearing seat and the diaphragm limiting wall. The filtering membrane group is arranged on the membrane bearing seat and abuts against the inner side of the membrane limiting wall. The filtering membrane group comprises a plurality of first ion exchange membranes and a plurality of second ion exchange membranes which are alternately arranged; and a plurality of flow passage partition plates. The flow channel clapboard is arranged between the first ion exchange membrane and the second ion exchange membrane. The cover body is arranged on the accommodating box body and comprises at least one opening, a body part and a pressing part, wherein the at least one opening penetrates through the body part, a first side of the body part, which is adjacent to the filtering membrane group, is provided with a peripheral area and an inner area, the inner area is more adjacent to the opening than the peripheral area, and the pressing part is formed on the inner area.

Compared with the comparative example of the dialysis unit without the membrane limiting wall, the cartridge type electrodialysis unit provided by the utility model has the membrane limiting wall, so that the first ion exchange membrane, the second ion exchange membrane and the flow channel partition plate can be easily aligned and fixed on the membrane bearing seat in the process of stacking the filter membrane groups, the first ion exchange membrane, the second ion exchange membrane and the flow channel partition plate can be easily assembled even if the filter membrane groups with large sizes are still easily assembled without consuming extra manpower, the time and labor are saved in assembling the cartridge type electrodialysis unit, the first ion exchange membrane, the second ion exchange membrane and the flow channel partition plate can be more accurately aligned, the problem of internal water leakage caused by the position deviation of the membranes can be effectively reduced, and the risk of mixing purified water and sewage is eliminated. In addition, compared with the comparative example without the pressing part, the cassette type electrodialysis unit provided by the utility model has the pressing part arranged on the cover part, so that the cover part is combined with the accommodating box body, and meanwhile, the pressing stress is uniformly applied to the filtering membrane group, the filtering membrane group can achieve the required compression ratio of the membrane by a simple mode, the problem of uneven stress during the compression of the filtering membrane group is solved, and the more excellent leakage-proof effect can be provided.

The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be effected therein by one skilled in the art without departing from the spirit and scope of the utility model as defined in the appended claims.

Claims

1. A cartridge type electrodialysis unit comprises a containing box body, a filtering membrane set and a cover body,

wherein this holding box body includes:

a diaphragm bearing seat;

the diaphragm limiting wall is arranged on the diaphragm bearing seat in a surrounding manner; and

the accommodating port is formed between the diaphragm bearing seat and the diaphragm limiting wall;

wherein this filtration diaphragm group sets up on this diaphragm bears the seat and contradicts the inboard of this diaphragm spacing wall, and this filtration diaphragm group includes:

a plurality of first ion exchange membranes and a plurality of second ion exchange membranes which are alternately arranged; and

a plurality of flow channel separators disposed between the plurality of first ion exchange membranes and the plurality of second ion exchange membranes; and

the cover member is disposed on the accommodating box and includes at least one opening, a main body and a pressing portion, wherein the at least one opening passes through the main body, the main body has a peripheral region and an inner region adjacent to a first side of the filter membrane module, the inner region is closer to the at least one opening than the peripheral region, and the pressing portion is formed on the inner region.

2. The cartridge electrodialysis unit of claim 1, further comprising:

the first sealing element is arranged between the membrane bearing seat and the filtering membrane group; and

and the second sealing element is arranged between the pressing part and the filtering membrane group and between the peripheral area and the diaphragm limiting wall.

3. The cartridge electrodialysis unit of claim 1, wherein the cover member has an inner surface corresponding to the first side, and the pressing portion and the main portion located in the inner region together form a thickness greater than a thickness of the main portion formed in the outer region in a normal direction of the inner surface.

4. The cartridge electrodialysis unit of claim 1, wherein the pressing portion surrounds the at least one opening.

5. The cartridge electrodialysis unit of claim 1, wherein:

before the filtering membrane group is compressed by the pressing part, the filtering membrane group has a first thickness; and

after the filtering membrane group is compressed by the pressing part, the filtering membrane group has a second thickness, wherein the second thickness is smaller than the first thickness.

6. The cartridge electrodialysis unit of claim 5, wherein the second thickness has a compression percentage with respect to the first thickness, and the compression percentage is in a range of 3% -15%.

7. The cartridge-type electrodialysis unit of claim 1, wherein the cover member has an inner surface corresponding to the first side, a plurality of holes extending along a first direction and a plurality of extending holes extending along a second direction, the first direction is parallel to a normal direction of the inner surface, the second direction is perpendicular to the normal direction of the inner surface, the plurality of holes of the cover member pass through the pressing portion and the main body portion, and the plurality of extending holes connect the corresponding plurality of holes to the at least one opening.

8. The cartridge electrodialysis unit of claim 7, wherein the plurality of holes of the cover member comprise a first group of holes and a second group of holes formed on opposite sides 2 of the at least one opening, the plurality of holes of the first group of holes being separated from each other along a third direction, the plurality of holes of the second group of holes being separated from each other along the third direction, the third direction being perpendicular to the first direction and the second direction, wherein

In the second direction, the plurality of extended holes of the plurality of holes in the first group of holes are separated from the plurality of extended holes of the plurality of holes in the second group of holes.

9. The cartridge electrodialysis unit of claim 7, wherein the plurality of apertures of the cover member comprises a first group of apertures and a second group of apertures, the first group of apertures and the second group of apertures of the cover member being formed on opposite sides of the at least one opening,

wherein each first ion exchange membrane comprises a first group of holes and a second group of holes, each second ion exchange membrane comprises a first group of holes and a second group of holes, and each flow channel partition plate comprises a first group of holes and a second group of holes, an

Wherein the first group of holes of the cover member, the first group of holes of each first ion exchange membrane, the first group of holes of each second ion exchange membrane, and the first group of holes of each flow channel partition plate correspond to each other; the second group of holes of the cover, the second group of holes of each first ion exchange membrane, the second group of holes of each second ion exchange membrane and the second group of holes of each flow channel clapboard correspond to each other.

10. A cartridge-style electrodialysis module, comprising:

a plurality of cartridge type electrodialysis units and a positioning component,

each cartridge type electrodialysis unit comprises a containing box body, a filtering membrane set and a cover piece,

wherein this holding box body includes:

a diaphragm bearing seat;

the cover body is arranged on the accommodating box body and comprises at least one opening, a body part and a pressing part, wherein the at least one opening penetrates through the body part, a first side of the body part, which is adjacent to the filter membrane group, is provided with a peripheral area and an inner area, the inner area is more adjacent to the at least one opening than the peripheral area, and the pressing part is formed on the inner area;

wherein the positioning component is arranged outside the diaphragm limiting wall, so that the plurality of cartridge type electrodialysis units are aligned with each other.

11. The cartridge electrodialysis module of claim 10, wherein each cartridge electrodialysis unit further comprises:

12. The cartridge electrodialysis module of claim 11, further comprising a third seal disposed between the cartridge electrodialysis units.

13. The cartridge electrodialysis module of claim 10, wherein the positioning element further comprises:

the plurality of limiting slide rails are arranged at the same side of the plurality of cassette type electrodialysis units; and

and the first positioning parts are formed on the outer side of the diaphragm limiting wall and correspondingly combined with the limiting slide rails.

14. The cartridge-type electrodialysis module of claim 12, further comprising:

a first electrode cartridge and a second electrode cartridge, wherein the cartridge-type electrodialysis units are arranged between the first electrode cartridge and the second electrode cartridge; and

and 2 fourth sealing members respectively disposed between the first electrode cartridge and the cartridge type electrodialysis unit closest to the first electrode cartridge among the plurality of cartridge type electrodialysis units and between the second electrode cartridge and the cartridge type electrodialysis unit closest to the second electrode cartridge among the plurality of cartridge type electrodialysis units.

15. The cartridge electrodialysis module of claim 14, further comprising a third electrode cartridge disposed between the first electrode cartridge and the second electrode cartridge and inserted into the plurality of cartridge electrodialysis units.

16. The cartridge electrodialysis module of claim 14, wherein the positioning element further comprises:

the plurality of limiting slide rails are arranged at the same side of the plurality of cassette type electrodialysis units;

the first positioning parts are formed on the outer side of the diaphragm limiting wall and correspondingly combined with the limiting slide rails; and

and the second positioning parts are formed on the outer sides of the first electrode box and the second electrode box and correspondingly combined with the limiting slide rails.

17. The cartridge electrodialysis module of claim 14, further comprising a clamping assembly, the clamping assembly comprising:

a plurality of first coupling parts formed at an outer side of the first electrode cartridge;

a plurality of second combining parts formed at the outer side of the second electrode box; and

a plurality of screw members respectively connected to the plurality of first coupling portions and the plurality of second coupling portions, such that the first electrode cartridge, the plurality of cartridge type electrodialysis units, and the second electrode cartridge are fixed to each other.

18. A cartridge-style electrodialysis module, comprising:

wherein this holding box body includes:

a diaphragm bearing seat;

the positioning component is disposed on a first side and a second side of each cartridge type electrodialysis unit, and the first side of each cartridge type electrodialysis unit is opposite to the second side of each cartridge type electrodialysis unit.

19. The cartridge electrodialysis module of claim 18, wherein the positioning element further comprises a plurality of first positioning portions, each of the plurality of first positioning portions comprises a recess portion disposed on the first side of each of the cartridge electrodialysis units and a protrusion portion disposed on the second side of each of the cartridge electrodialysis units, and the recess portions and the protrusion portions of the adjacent cartridge electrodialysis units are correspondingly combined.

20. The cartridge electrodialysis module of claim 19, further comprising a first electrode cartridge and a second electrode cartridge, wherein the plurality of cartridge electrodialysis units are disposed between the first electrode cartridge and the second electrode cartridge;

the positioning assembly further comprises a plurality of second positioning portions, the second positioning portions are arranged on one side of the first electrode cartridge adjacent to the cartridge type electric dialysis units and one side of the second electrode cartridge adjacent to the cartridge type electric dialysis units, and the second positioning portions and the corresponding first positioning portions are correspondingly combined with each other.