A bipolar membrane device with flexible compartment switching

Abstract

The present invention relates to the field of ion exchange technology, and in particular to a bipolar membrane device capable of flexibly switching compartments. The present invention provides a compartment switching disk having the same number of groups as the compartments and a connecting seat connecting the compartments and the compartment switching disk. By operating the switching assembly and moving the switching block to the corresponding position, each group of compartment switching disks can be driven to rotate independently, so that its only liquid inlet channel rotates to the corresponding connecting channel on the connecting seat, thereby connecting a specific compartment. Flexible switching of compartments is achieved to meet the ion exchange requirements of different solutions. There is no need to interrupt the normal operation of the bipolar membrane assembly, thereby ensuring the working efficiency of the device.

Description

Technical Field

[0001] The present invention relates to the technical field of ion exchange, and in particular to a bipolar membrane device with flexibly switchable compartments. Background Art

[0002] The bipolar membrane is a composite membrane made of a positive membrane and a negative membrane. Under the action of the DC electric field, the H20 between the positive and negative membrane composite layers dissociates into H + and OH - , and through the anion membrane and cation membrane respectively, they are widely used in the fields of chemical product production and sewage treatment.

[0003] Existing bipolar membrane devices feature a fixed, one-to-one correspondence between compartments and liquid inlets, requiring solutions to flow from fixed locations into fixed compartments for ion exchange, with no ability to switch compartments midway. Failure of the bipolar membrane during ion exchange requires shutting down the device for maintenance. Switching compartments also requires shutting down the liquid inlet and changing the inlet, further limiting ion exchange performance. Summary of the Invention

[0004] To address the challenges of the prior art, a bipolar membrane device with flexible compartment switching is proposed. This allows for flexible compartment switching to meet the ion exchange requirements of different solutions. This process eliminates the need to interrupt the normal operation of the bipolar membrane assembly, ensuring device efficiency.

[0005] The present invention provides a bipolar membrane device with flexibly switchable compartments, comprising an operating box, a compartment switching disk, a connecting seat, a switching assembly and a bipolar membrane assembly.

[0006] A partition is provided inside the operating box, which is divided into a compartment switching chamber and a bipolar membrane working chamber. An opening connected to the compartment switching chamber is provided at the front end, and a liquid outlet pipe connected to the bipolar membrane working chamber is provided at the rear end. Through holes are arranged in a matrix shape on the partition.

[0007] The number of groups of compartment switching disks is consistent with the number of rows of through holes, and they are stacked up and down in sequence in the compartment switching chamber. At the same time, adjacent compartment switching disks are coaxially connected. Each group of compartment switching disks is provided with a group of liquid inlet channels with both ends open, and the front end is provided with a feed pipe that is connected to the head end of the liquid inlet channel in a one-to-one manner and is located in the opening.

[0008] The connecting seat is fitted between the partition and the compartment switching disk, and multiple groups of connecting channels are arranged inside; the liquid outlet ends of the multiple groups of connecting channels are connected to the through holes one by one, and the liquid inlet ends rotate with the compartment switching disk and selectively connect with the head end of the liquid inlet channel.

[0009] The switching components are arranged on both sides of the compartment switching disk and are used to independently adjust the rotation angle of each group of compartment switching disks so that the liquid inlet channel is connected with the required connecting channel and through hole.

[0010] The bipolar membrane components are detachable and arranged in multiple groups at intervals within the bipolar membrane working chamber, with compartments formed between adjacent bipolar membrane components; the number of compartments is consistent with the number of through-hole columns, and each column of through-holes is connected to the water inlet end of the compartment in a one-to-one correspondence; the liquid outlet pipe is connected to the water outlet end of the compartment.

[0011] An anode and a cathode are respectively provided on both sides of the bipolar membrane working chamber.

[0012] Preferably, a heat exchange layer is provided on the inner wall of the liquid inlet channel, and a heat collector cooperating with the heat exchange layer is provided on the outer side.

[0013] Preferably, the switching components are arranged in a mirror-image manner on both sides of the compartment switching disk, and each group of switching components includes a semi-annular rack, a gear, a linear rack, a rotating shaft and a switching block; the semi-annular rack is arranged on the side wall of the compartment switching disk; the linear rack is slidingly arranged on the inner wall of the compartment switching chamber, and the number and position correspond one-to-one to the semi-annular rack, and is connected to the switching block at the same time; the rotating shaft is arranged on both sides of the opening; the gear is arranged axially along the rotating shaft and is rotatably connected to it, and each group of gears is located between each pair of linear racks and semi-annular racks, and is engaged with both of them at the same time.

[0014] Preferably, a sliding opening is provided on the operating box; the switching block passes through the sliding opening and slides along its track; compartment switching indicating scales are provided on both sides of the sliding opening.

[0015] Preferably, the connecting seat is of approximately trapezoidal structure, the small head end is provided with an arc groove for rotationally connecting with the compartment switching disk, and has a liquid inlet, and the large head end is provided with a liquid outlet that is connected to the through hole in a one-to-one correspondence; the connecting channel is located between the liquid inlet and the liquid outlet.

[0016] Preferably, the bipolar membrane assembly includes a mounting frame; the mounting frame is detachably arranged in the bipolar membrane working chamber, the bipolar membrane is arranged in the frame, and a sealing strip is arranged on the outer wall of the frame.

[0017] Preferably, a mounting groove is provided on the inner wall of the bipolar membrane working chamber, and a mounting opening is provided on the top; the mounting frame is installed by passing through the mounting opening and snapping into the mounting groove, and a mounting plate covering the mounting opening is provided on the top; the mounting plate is fixed to the outside of the operating box by fixing nails.

[0018] Preferably, the sealing strip has a V-shaped cross section, is disposed between the mounting groove and the mounting frame, and has an opening facing the inner wall of the bipolar membrane working chamber.

[0019] The present invention further proposes a method for operating a bipolar membrane device including the above-mentioned flexibly switchable compartments, wherein the switching steps are as follows:

[0020] S1. Select the compartment to be switched and the corresponding feed pipe;

[0021] S2. Slide the two sets of switching blocks that cooperate with the compartment switching disk in opposite directions. By reading the compartment switching indicator scale, the switching blocks move to the corresponding positions. During the movement, the linear rack moves synchronously, and the gear drives the semi-annular rack to rotate, realizing the rotation of the compartment switching disk, and finally adjusting the liquid outlet end of the liquid inlet channel to communicate with a specific connecting channel of the connecting seat;

[0022] S3. The solution is input through the feeding tube, and the solution enters the corresponding compartment along the liquid inlet channel and the connecting channel;

[0023] S4. Continue to operate the switching block to drive the switching disks of other compartments to rotate, and switch the compartments respectively.

[0024] Compared with the prior art, the present invention has the following beneficial technical effects:

[0025] The present invention features a switching disk with the same number of compartments as the number of groups, and a docking station that connects the compartments to the switching disks. By operating the switching assembly and moving the switching block to the corresponding position, each group of compartment switching disks can be driven to rotate independently, allowing its single liquid inlet channel to rotate to the corresponding docking station on the docking station, thereby connecting the specific compartment. This allows for flexible switching between compartments, meeting the ion exchange requirements of different solutions. This eliminates the need to interrupt the normal operation of the bipolar membrane assembly, ensuring the device's operating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A front view of an embodiment of the present invention;

[0027] Figure 2 A rear view of an embodiment of the present invention;

[0028] Figure 3 A cross-sectional view of an embodiment of the present invention (viewing angle 1);

[0029] Figure 4 A cross-sectional view of an embodiment of the present invention (viewing angle 2);

[0030] Figure 5 for Figure 3 A partial secondary cross-sectional view of

[0031] Figure 6 A schematic diagram of the structure of a switching block in an embodiment of the present invention;

[0032] Figure 7 A schematic diagram of a bipolar membrane assembly in one embodiment of the present invention;

[0033] Figure 8 for Figure 4 Enlarged view of point A in the middle;

[0034] Figure 9 for Figure 7Enlarged view of point B in the middle.

[0035] Figure markings: 1. Operation box; 101. Opening; 102. Liquid outlet pipe; 103. Feed pipe; 104. Partition; 1041. Through hole; 105. Slide; 106. Compartment switching indicator scale; 107. Mounting port; 3. Compartment switching disk; 301. Heat exchange layer; 302. Heat collector; 303. Liquid inlet channel; 4. Bipolar membrane assembly; 401. Mounting frame; 402. Bipolar membrane; 403. Sealing strip; 404. Mounting plate; 5. Switching assembly; 501. Semi-annular rack; 502. Gear; 503. Rotating shaft; 504. Linear rack; 505. Switching block; 6. Bipolar membrane working room; 601. Compartment; 6011. Mounting groove; 7. Compartment switching chamber; 8. Connecting seat; 801. Connecting channel; 9. Anode; 10. Cathode. DETAILED DESCRIPTION

[0036] Example 1

[0037] like Figure 1-Figure 5 As shown, the bipolar membrane device with flexible compartment switching proposed by the present invention includes an operation box 1, a compartment switching disk 3, a connecting seat 8, a switching assembly 5 and a bipolar membrane assembly 4.

[0038] A partition 104 is provided inside the operating box 1, which is divided into a compartment switching chamber 7 and a bipolar membrane working chamber 6. An opening 101 connected to the compartment switching chamber 7 is provided at the front end, and a liquid outlet pipe 102 connected to the bipolar membrane working chamber 6 is provided at the rear; a matrix of through holes 1041 is arranged on the partition 104.

[0039] The number of groups of compartment switching disks 3 is consistent with the number of rows of through holes 1041, and they are stacked up and down in sequence in the compartment switching chamber 7. At the same time, adjacent compartment switching disks 3 are coaxially connected. A group of liquid inlet channels 303 with open ends are provided inside each group of compartment switching disks 3, and a feed pipe 103 is provided at the front end, which is connected one-to-one with the head end of the liquid inlet channel 303 and is located in the opening 101.

[0040] The connecting seat 8 is fitted between the partition 104 and the compartment switching disk 3, and multiple groups of connecting channels 801 are arranged inside; the liquid outlet ends of the multiple groups of connecting channels 801 are connected to the through holes 1041 one by one, and the liquid inlet ends rotate with the compartment switching disk 3 and are selectively connected to the head end of the liquid inlet channel 303.

[0041] The switching components 5 are arranged on both sides of the compartment switching disk 3 for independently adjusting the rotation angle of each group of compartment switching disks 3 so that the liquid inlet channel 303 is connected with the required connecting channel 801 and through hole 1041.

[0042] The bipolar membrane assemblies 4 are detachable and arranged in multiple groups at intervals in the bipolar membrane working chamber 6, and compartments 601 are formed between adjacent bipolar membrane assemblies 4; the number of compartments 601 is consistent with the number of columns of through holes 1041, and each column of through holes 1041 is connected to the water inlet end of the compartment 601 in a one-to-one correspondence; the liquid outlet pipe 102 is connected to the water outlet end of the compartment 601.

[0043] An anode 9 and a cathode 10 are respectively provided on both sides of the bipolar membrane working chamber 6 .

[0044] It should be further explained that a heat exchange layer 301 is provided on the inner wall of the liquid inlet channel 303, and a heat collector 302 is provided on the outer side thereof to cooperate with the heat exchange layer 301. When the input solution is high-temperature waste liquid, the heat exchange layer 301 can be used for heat exchange to cool the solution and collect heat energy at the same time.

[0045] In this embodiment, a number of compartment switching disks 3, the same as the number of compartments 601, and a connecting seat 8 connecting the compartments 601 and the compartment switching disks 3 are provided. By operating the switching assembly 5, each group of compartment switching disks 3 can be driven to rotate independently, so that its unique liquid inlet channel 303 rotates to the corresponding connecting channel 801 on the connecting seat 8, thereby connecting a specific compartment 601. This enables flexible switching of the compartments 601 to meet the ion exchange requirements of different solutions. This also eliminates the need to interrupt the normal operation of the bipolar membrane assembly 4, thereby ensuring the operating efficiency of the device.

[0046] Example 2

[0047] like Figure 1-Figure 5 As shown, the bipolar membrane device with flexible compartment switching proposed by the present invention includes an operation box 1, a compartment switching disk 3, a connecting seat 8, a switching assembly 5 and a bipolar membrane assembly 4.

[0048] A partition 104 is provided inside the operating box 1, which is divided into a compartment switching chamber 7 and a bipolar membrane working chamber 6. An opening 101 connected to the compartment switching chamber 7 is provided at the front end, and a liquid outlet pipe 102 connected to the bipolar membrane working chamber 6 is provided at the rear; a matrix of through holes 1041 is arranged on the partition 104.

[0049] The number of groups of compartment switching disks 3 is consistent with the number of rows of through holes 1041, and they are stacked up and down in sequence in the compartment switching chamber 7. At the same time, adjacent compartment switching disks 3 are coaxially connected. A group of liquid inlet channels 303 with open ends are provided inside each group of compartment switching disks 3, and a feed pipe 103 is provided at the front end, which is connected one-to-one with the head end of the liquid inlet channel 303 and is located in the opening 101.

[0050] The connecting seat 8 is fitted between the partition 104 and the compartment switching disk 3, and multiple groups of connecting channels 801 are arranged inside; the liquid outlet ends of the multiple groups of connecting channels 801 are connected to the through holes 1041 one by one, and the liquid inlet ends rotate with the compartment switching disk 3 and are selectively connected to the head end of the liquid inlet channel 303.

[0051] The switching components 5 are arranged on both sides of the compartment switching disk 3 for independently adjusting the rotation angle of each group of compartment switching disks 3 so that the liquid inlet channel 303 is connected with the required connecting channel 801 and through hole 1041.

[0052] The bipolar membrane assemblies 4 are detachable and arranged in multiple groups at intervals in the bipolar membrane working chamber 6, and compartments 601 are formed between adjacent bipolar membrane assemblies 4; the number of compartments 601 is consistent with the number of columns of through holes 1041, and each column of through holes 1041 is connected to the water inlet end of the compartment 601 in a one-to-one correspondence; the liquid outlet pipe 102 is connected to the water outlet end of the compartment 601.

[0053] An anode 9 and a cathode 10 are respectively provided on both sides of the bipolar membrane working chamber 6 .

[0054] Figure 3-Figure 5 As shown, the switching components 5 are arranged in a mirror image on both sides of the compartment switching disk 3. Each set of switching components 5 includes a semi-annular rack 501, a gear 502, a linear rack 504, a rotating shaft 503 and a switching block 505. The semi-annular rack 501 is set on the side wall of the compartment switching disk 3. The linear rack 504 is slidably set on the inner wall of the compartment switching chamber 7, and the number and position correspond to the semi-annular rack 501 one-to-one, and is connected to the switching block 505. The rotating shaft 503 is set on both sides of the opening 101. The gear 502 is axially arranged along the rotating shaft 503 and is connected to it for rotation. Each set of gears 502 is located between each pair of linear racks 504 and semi-annular racks 501, and is meshed with both at the same time. When it is necessary to switch the compartment 601, first slide the two sets of switching blocks 505 that cooperate with the compartment switching disk 3 in opposite directions. During the movement, the linear rack 504 moves synchronously, and the gear 502 drives the semi-annular rack 501 to rotate, and the compartment switching disk 3 rotates. The liquid inlet channel 303 can be connected to a specific connecting channel 801 of the connecting seat 8 to achieve the switching of the compartment 601. The switching operation is simple, fast and flexible.

[0055] Figure 6 As shown, the operating box 1 is provided with a sliding opening 105; the switching block 505 passes through the sliding opening 105 and slides along its track; and compartment switching indicator scales 106 are provided on both sides of the sliding opening 105. The compartment switching indicator scales 106 can accurately connect the liquid inlet channel 303 and the connecting channel 801.

[0056] Figure 3-Figure 5 As shown, the adapter 8 has a roughly trapezoidal structure. Its smaller end is rotatably connected to the compartment switching disk 3 and includes an arcuate groove for the liquid inlet. Its larger end is provided with a liquid outlet that corresponds one-to-one with the through-hole 1041. The connecting channel 801 is located between the liquid inlet and outlet. The adapter 8 serves as a buffer and connection between the liquid inlet channel 303 and the compartment 601, enabling switching between compartments 601.

[0057] Example 3

[0058] like Figure 1-Figure 5 As shown, the bipolar membrane device with flexible compartment switching proposed by the present invention includes an operation box 1, a compartment switching disk 3, a connecting seat 8, a switching assembly 5 and a bipolar membrane assembly 4.

[0059] A partition 104 is provided inside the operating box 1, which is divided into a compartment switching chamber 7 and a bipolar membrane working chamber 6. An opening 101 connected to the compartment switching chamber 7 is provided at the front end, and a liquid outlet pipe 102 connected to the bipolar membrane working chamber 6 is provided at the rear; a matrix of through holes 1041 is arranged on the partition 104.

[0060] The number of groups of compartment switching disks 3 is consistent with the number of rows of through holes 1041, and they are stacked up and down in sequence in the compartment switching chamber 7. At the same time, adjacent compartment switching disks 3 are coaxially connected. A group of liquid inlet channels 303 with open ends are provided inside each group of compartment switching disks 3, and a feed pipe 103 is provided at the front end, which is connected one-to-one with the head end of the liquid inlet channel 303 and is located in the opening 101.

[0061] The connecting seat 8 is fitted between the partition 104 and the compartment switching disk 3, and multiple groups of connecting channels 801 are arranged inside; the liquid outlet ends of the multiple groups of connecting channels 801 are connected to the through holes 1041 one by one, and the liquid inlet ends rotate with the compartment switching disk 3 and are selectively connected to the head end of the liquid inlet channel 303.

[0062] The switching components 5 are arranged on both sides of the compartment switching disk 3 for independently adjusting the rotation angle of each group of compartment switching disks 3 so that the liquid inlet channel 303 is connected with the required connecting channel 801 and through hole 1041.

[0063] The bipolar membrane assemblies 4 are detachable and arranged in multiple groups at intervals in the bipolar membrane working chamber 6, and compartments 601 are formed between adjacent bipolar membrane assemblies 4; the number of compartments 601 is consistent with the number of columns of through holes 1041, and each column of through holes 1041 is connected to the water inlet end of the compartment 601 in a one-to-one correspondence; the liquid outlet pipe 102 is connected to the water outlet end of the compartment 601.

[0064] An anode 9 and a cathode 10 are respectively provided on both sides of the bipolar membrane working chamber 6 .

[0065] Figure 3-Figure 5As shown, the switching components 5 are arranged in a mirror image on both sides of the compartment switching disk 3. Each set of switching components 5 includes a semi-annular rack 501, a gear 502, a linear rack 504, a rotating shaft 503 and a switching block 505. The semi-annular rack 501 is set on the side wall of the compartment switching disk 3. The linear rack 504 is slidably set on the inner wall of the compartment switching chamber 7, and the number and position correspond to the semi-annular rack 501 one-to-one, and is connected to the switching block 505. The rotating shaft 503 is set on both sides of the opening 101. The gear 502 is axially arranged along the rotating shaft 503 and is connected to it for rotation. Each set of gears 502 is located between each pair of linear racks 504 and semi-annular racks 501, and is meshed with both at the same time. When it is necessary to switch the compartment 601, first slide the two sets of switching blocks 505 that cooperate with the compartment switching disk 3 in opposite directions. During the movement, the linear rack 504 moves synchronously, and the gear 502 drives the semi-annular rack 501 to rotate, and the compartment switching disk 3 rotates. The liquid inlet channel 303 can be connected to a specific connecting channel 801 of the connecting seat 8 to achieve the switching of the compartment 601. The switching operation is simple, fast and flexible.

[0066] Figure 6 As shown, the operating box 1 is provided with a sliding opening 105; the switching block 505 passes through the sliding opening 105 and slides along its track; and compartment switching indicator scales 106 are provided on both sides of the sliding opening 105. The compartment switching indicator scales 106 can accurately connect the liquid inlet channel 303 and the connecting channel 801.

[0067] Figure 3-Figure 5 As shown, the adapter 8 has a roughly trapezoidal structure. Its smaller end is rotatably connected to the compartment switching disk 3 and includes an arcuate groove for the liquid inlet. Its larger end is provided with a liquid outlet that corresponds one-to-one with the through-hole 1041. The connecting channel 801 is located between the liquid inlet and outlet. The adapter 8 serves as a buffer and connection between the liquid inlet channel 303 and the compartment 601, enabling switching between compartments 601.

[0068] Figure 7 As shown, the bipolar membrane assembly 4 includes a mounting frame 401 ; the mounting frame 401 is detachably arranged in the bipolar membrane working chamber 6 , a bipolar membrane 402 is arranged in the frame, and a sealing strip 403 is arranged on the outer wall of the frame.

[0069] Figure 8 As shown, a mounting groove 6011 is provided on the inner wall of the bipolar membrane working chamber 6, and a mounting opening 107 is provided on the top; the mounting frame 401 is installed by passing through the mounting opening 107 and snapping into the mounting groove 6011, and a mounting plate 404 covering the mounting opening 107 is provided on the top; the mounting plate 404 is fixed to the outside of the operating box 1 by fixing nails.

[0070] Figure 9 As shown, the sealing strip 403 has a V-shaped cross section, is disposed between the mounting groove 6011 and the mounting frame 401 , and opens toward the inner wall of the bipolar membrane working chamber 6 .

[0071] The specific structure of the bipolar membrane assembly 4 in this embodiment is configured by inserting the mounting frame 401 through the mounting opening 107 and snapping it into the mounting groove 6011 for installation. The mounting plate 404 is then secured to the exterior of the operating box 1 using fixing pins. This facilitates replacement and maintenance of the bipolar membrane 402, ensuring efficient and effective ion exchange. During installation, the sealing strip 403 enters the mounting groove 6011 along with the mounting frame 401, where it is squeezed and deformed, blocking the space between the mounting groove 6011 and the mounting frame 401, thereby improving the leak-proofness of the compartment 601.

[0072] Example 4

[0073] The present invention further proposes a method for operating a bipolar membrane device including the above-mentioned flexibly switchable compartments, wherein the switching steps are as follows:

[0074] S1, select the compartment 601 that needs to be switched and the corresponding feed pipe 103;

[0075] S2. Slide the two sets of switching blocks 505 cooperating with the compartment switching disk 3 in the opposite direction, and move the switching blocks 505 to the corresponding positions by reading the compartment switching indicator scale 106; during the movement, the linear rack 504 moves synchronously, and the gear 502 drives the semi-annular rack 501 to rotate, realizing the rotation of the compartment switching disk 3, and finally adjusting the liquid outlet end of the liquid inlet channel 303 to communicate with a specific connecting channel 801 of the connecting seat 8;

[0076] S3. The solution is fed through the feeding tube 103 and flows through the liquid inlet channel 303 and the connecting channel 801 into the corresponding compartment 601;

[0077] S4. Continue to operate the switching block 505 to drive the other compartment switching disks 3 to rotate, and switch the compartments 601 respectively.

[0078] The bipolar membrane device in this embodiment can flexibly, independently, and quickly switch the compartments 601 according to the ion exchange requirements. The operation is simple and flexible, and the ion exchange requirements of different solutions are met, thereby improving the working efficiency of the device.

[0079] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A bipolar membrane device with flexible compartment switching, characterized in that: include: An operating box (1) is provided with a partition (104) inside and is divided into a compartment switching chamber (7) and a bipolar membrane working chamber (6). An opening (101) communicating with the compartment switching chamber (7) is provided at the front end, and a liquid outlet pipe (102) communicating with the bipolar membrane working chamber (6) is provided at the rear end. Through holes (1041) are arranged in a matrix on the partition (104). The compartment switching disks (3) are arranged in groups in the same number as the number of rows of the through holes (1041), and are stacked up and down in sequence in the compartment switching chamber (7). At the same time, adjacent compartment switching disks (3) are coaxially connected. Each group of compartment switching disks (3) is provided with a group of liquid inlet channels (303) with two ends open, and a feed pipe (103) is provided at the front end, which is connected to the head end of the liquid inlet channel (303) in a one-to-one correspondence and is located in the opening (101); The connecting seat (8) is arranged between the partition (104) and the compartment switching disk (3), and multiple groups of connecting channels (801) are arranged inside; the liquid outlet ends of the multiple groups of connecting channels (801) are connected to the through holes (1041) in a one-to-one correspondence, and the liquid inlet ends rotate with the compartment switching disk (3) and selectively connect to the head end of the liquid inlet channel (303); The switching assembly (5) is arranged on both sides of the compartment switching disk (3) and is used to independently adjust the rotation angle of each group of compartment switching disks (3) so that the liquid inlet channel (303) is connected with the required connecting channel (801) and the through hole (1041); The bipolar membrane assembly (4) is detachable and spaced apart in a plurality of groups within the bipolar membrane working chamber (6), with adjacent bipolar membrane assemblies (4) forming compartments (601); the number of compartments (601) is consistent with the number of rows of through holes (1041), and each row of through holes (1041) is connected to the water inlet end of the compartment (601) in a one-to-one correspondence; and the liquid outlet pipe (102) is connected to the water outlet end of the compartment (601); An anode (9) and a cathode (10) are respectively provided on both sides of the bipolar membrane working chamber (6).

2. A bipolar membrane device with flexibly switchable compartments according to claim 1, characterized in that: A heat exchange layer (301) is provided on the inner wall of the liquid inlet channel (303), and a heat collector (302) matched with the heat exchange layer (301) is provided on the outer side.

3. A bipolar membrane device with flexibly switchable compartments according to claim 1, characterized in that: The switching components (5) are arranged in a mirror image on both sides of the compartment switching disk (3), and each group of switching components (5) includes a semi-annular rack (501), a gear (502), a linear rack (504), a rotating shaft (503) and a switching block (505); the semi-annular rack (501) is arranged on the side wall of the compartment switching disk (3); the linear rack (504) is slidably arranged on the inner wall of the compartment switching chamber (7), and the number and position correspond to the semi-annular rack (501) one by one, and is connected to the switching block (505); the rotating shaft (503) is arranged on both sides of the opening (101); the gear (502) is axially arranged along the rotating shaft (503) and is rotatably connected thereto, and each group of gears (502) is located between each pair of linear racks (504) and the semi-annular rack (501), and is meshed with both at the same time.

4. A bipolar membrane device with flexibly switchable compartments according to claim 3, characterized in that: A sliding opening (105) is provided on the operating box (1); the switching block (505) passes through the sliding opening (105) and slides along its track.

5. A bipolar membrane device with flexibly switchable compartments according to claim 4, characterized in that: Compartment switching indicating scales (106) are provided on both sides of the sliding opening (105).

6. A bipolar membrane device with flexibly switchable compartments according to claim 1, characterized in that: The connecting seat (8) is of approximately trapezoidal structure, with a small end provided with an arc groove for rotationally connecting with the compartment switching disk (3) and a liquid inlet, and a large end provided with a liquid outlet corresponding to and connected to the through hole (1041); the connecting channel (801) is located between the liquid inlet and the liquid outlet.

7. A bipolar membrane device with flexibly switchable compartments according to claim 1, characterized in that: The bipolar membrane assembly (4) comprises a mounting frame (401); the mounting frame (401) is detachably arranged in a bipolar membrane working chamber (6), a bipolar membrane (402) is arranged in the frame, and a sealing strip (403) is arranged on the outer wall of the frame.

8. A bipolar membrane device with flexibly switchable compartments according to claim 7, characterized in that: A mounting groove (6011) is provided on the inner wall of the bipolar membrane working chamber (6), and a mounting opening (107) is provided on the top; the mounting frame (401) is installed by passing through the mounting opening (107) and snapping into the mounting groove (6011); a mounting plate (404) covering the mounting opening (107) is provided on the top; the mounting plate (404) is fixed to the outside of the operating box (1) by fixing nails.

9. A bipolar membrane device with flexibly switchable compartments according to claim 7, characterized in that: The sealing strip (403) has a V-shaped cross section and is disposed between the mounting groove (6011) and the mounting frame (401), with its opening facing the inner wall of the bipolar membrane working chamber (6).

10. A method for operating a bipolar membrane device comprising a flexibly switchable compartment according to any one of claims 1 to 9, characterized in that: The switching steps are as follows: S1. Select the compartment (601) to be switched and the corresponding feed pipe (103); S2, the two groups of switching blocks (505) cooperating with the compartment switching disk (3) are slid in opposite directions, and the switching blocks (505) are moved to corresponding positions by reading the compartment switching indication scale (106); during the movement, the linear rack (504) moves synchronously, and the gear (502) drives the semi-annular rack (501) to rotate, thereby realizing the rotation of the compartment switching disk (3), and finally adjusting the liquid outlet end of the liquid inlet channel (303) to communicate with a specific connecting channel (801) of the connecting seat (8); S3, the solution is input through the feeding tube (103), and the solution enters the corresponding compartment (601) along the liquid inlet channel (303) and the connecting channel (801); S4. Continue to operate the switching block (505) to drive the other compartment switching disks (3) to rotate, and switch the compartments (601) respectively.

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