An electrolytic cell

Abstract

The present invention discloses an electrolytic cell, comprising a cell body (1) having an electrode chamber (110), wherein a pair of spaced electrode sheets (3) are provided in the electrode chamber (110), and wherein the electrolytic cell is characterized in that an insulating screen (4) is provided in the electrode chamber (110), wherein the insulating screen (4) comprises a first screen portion (41) and a second screen portion (42) spaced apart along its extension direction, wherein the first screen portion (41) and the second screen portion (42) are respectively selected from screens having different degrees of ion obstruction, and wherein the insulating screen (4) can be moved along its extension direction under the action of an external force and enter and exit between the two electrode sheets (3). Compared with the prior art, the electrolytic cell of the present invention facilitates the control of a constant current.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen equipment, in particular to an electrolytic cell. Background Art

[0002] An electrolytic cell consists of a cell body, an anode, and a cathode. Most electrolytic cells are separated by an ion exchange membrane (also called a diaphragm). Depending on the electrolyte, they are classified into three categories: aqueous solution electrolytic cells, molten salt electrolytic cells, and non-aqueous solution electrolytic cells. When direct current passes through the electrolytic cell, an oxidation reaction occurs at the anode-solution interface, and a reduction reaction occurs at the cathode-solution interface, producing electrolyzed water.

[0003] For example, the Chinese invention patent "A Method for Preparing Acidic Water and Alkaline Water" with patent application number CN201810264395.4 (publication number CN108609693A) uses electrolysis of salt water to form cations and anions, which move toward the two poles of the electrolysis electrode respectively. Hydrogen ions and highly active chlorine gas are generated from the anode. The chlorine gas dissolves in water to generate hypochlorous acid and hydrochloric acid solution as acidic water, and hydroxide ions and hydrogen gas are generated from the cathode to form sodium hydroxide solution as alkaline water.

[0004] The following problems exist in the existing electrolyzed water preparation process:

[0005] First, the ion exchange membrane is a unique polymer membrane containing ionic groups that has the ability to selectively transmit cations or anions in the solution. It has a certain degree of flexibility. Over time, it will be affected by air pressure and water pressure, and will deform. It may even contact the electrode and cause dry burning, affecting the water output and the life of the electrolytic cell. This problem is particularly serious in small electrolytic cells.

[0006] Second, during the electrolysis process, a large number of bubbles are generated on the cathode and anode sheets. These bubbles accumulate on the electrode sheets, ion exchange membranes, and the water channels within the electrolytic cell, resulting in high voltage and energy consumption for the electrolysis system. This also reduces the effective electrolysis area, lowering the electrolysis reaction efficiency, leading to low effluent pH, and obstructing the flow of water, making the pH and voltage extremely unstable. Furthermore, the air pressure can exacerbate the deformation of the ion exchange membrane in the middle. This problem is particularly severe in small electrolytic cells.

[0007] Third, during the electrolysis process, the OH- generated at the cathode (negative electrode) will react with the Ca 2+ Mg 2+ The reaction generates scale, which is deposited on the cathode and ion exchange membrane, affecting the electrolysis effect and the life of the electrolytic cell;

[0008] Fourth, during the electrolysis process, ions need to first pass through the ion exchange membrane from the anode chamber into the cathode chamber before they can promote the entire electrolysis reaction. However, during the electrolysis reaction, ions and products tend to gather around the electrode sheet, which is not conducive to the diffusion and transfer of ions and the uniformity of products, thereby affecting the electrolysis efficiency and pH stability.

[0009] In addition, the Chinese invention patent application number CN202080012097.1 (publication number CN113474492A) "Electrolyte Manufacturing Device and Electrolyte Manufacturing Method" discloses that a mesh is set between the diaphragm and the electrode sheet to separate the diaphragm and the electrode sheet to prevent the diaphragm from contacting the electrode sheet and causing dry burning. Although the water flow can form local micro-turbulence in the process of passing through the mesh, its turbulence effect is limited and it cannot effectively accelerate exhaust, inhibit scale deposition, and accelerate ion transfer.

[0010] In addition, during the electrolysis process, if the current is too high, the overall temperature of the electrolytic cell will rise too high, and a polarization effect may be formed. The current density per unit area is too high and no reaction occurs. If the current is too low, the system will not react or will react very slowly, and the effluent will have difficulty reaching the target pH. Therefore, it is generally necessary to control the current to be constant to stabilize the effluent pH. However, during the electrolysis process, as the electrolyte concentration decreases, the resistance of the entire system will increase. In order to control the current to be constant, the voltage needs to be continuously increased, so a constant current power supply is required. However, constant current power supplies are expensive and difficult to develop. Summary of the Invention

[0011] The first technical problem to be solved by the present invention is to provide an electrolytic cell which is convenient for controlling the constant current in view of the current status of the prior art.

[0012] The second technical problem to be solved by the present invention is to provide an electrolytic cell that can improve the turbulence effect and thus accelerate exhaust.

[0013] The third technical problem to be solved by the present invention is to provide an electrolytic cell that can improve the flow disturbance effect and thus inhibit scale deposition.

[0014] The fourth technical problem to be solved by the present invention is to provide an electrolytic cell that can improve the turbulence effect and thus accelerate ion transfer.

[0015] The present invention solves the first, second, third, and fourth technical problems described above by adopting a technical solution: an electrolytic cell comprising a cell body having an electrode chamber, wherein a pair of spaced-apart electrode sheets are disposed within the electrode chamber, and wherein an insulating screen is disposed within the electrode chamber, the insulating screen comprising a first screen portion and a second screen portion spaced-apart along its extension direction, wherein the first screen portion and the second screen portion are respectively selected from screens having different degrees of ion obstruction, and wherein the insulating screen can move along its extension direction under the action of an external force to enter and exit between the two electrode sheets, and has at least two states:

[0016] In the first state, the first partition is partially separated between the two electrode sheets;

[0017] In the second state, the second partition is partially separated between the two electrode sheets.

[0018] In order to make the first and second partitions have different degrees of ion obstruction, the following scheme is provided:

[0019] In solution 1, the flow areas of the first partition part and the second partition part are different.

[0020] In order to achieve different flow areas, the surfaces of the first partition mesh part and the second partition mesh part are both provided with a plurality of mesh holes for fluid to pass through, and the mesh holes of the first partition mesh part and the second partition mesh part have different apertures.

[0021] In order to achieve the isolation protection function of the diaphragm, a diaphragm is provided in the tank body, which divides the inner cavity of the tank body into at least two electrode chambers. The two electrode sheets are respectively arranged in the two electrode chambers, and the insulating screen corresponds to the electrode sheets.

[0022] In the first state, the first partition is partially separated between the diaphragm and the corresponding electrode sheet;

[0023] In the second state, the second separator is partially separated between the diaphragm and the corresponding electrode sheet.

[0024] In the second solution, a plurality of spaced-apart bristles are arranged only on the surface of the first partition.

[0025] In order to achieve the isolation protection function of the diaphragm, a diaphragm is provided in the tank body, which divides the inner cavity of the tank body into at least two electrode chambers. The two electrode sheets are respectively arranged in the two electrode chambers, and the insulating screen corresponds to the electrode sheets.

[0026] In the first state, the first partition is partially separated between the diaphragm and the corresponding electrode sheet;

[0027] In the second state, the second separator is partially separated between the diaphragm and the corresponding electrode sheet.

[0028] In order to achieve the scraping and descaling function, the surfaces of both sides of the first partition part are arranged with the aforementioned bristles, which are respectively used for friction contact with the diaphragm and the corresponding electrode sheet.

[0029] In solution three, only the cross section of the first partition portion is a corrugated structure.

[0030] In order to achieve the isolation protection function of the diaphragm, a diaphragm is provided in the tank body, which divides the inner cavity of the tank body into at least two electrode chambers. The two electrode sheets are respectively arranged in the two electrode chambers, and the insulating screen corresponds to the electrode sheets.

[0031] In the first state, the first partition is partially separated between the diaphragm and the corresponding electrode sheet;

[0032] In the second state, the second separator is partially separated between the diaphragm and the corresponding electrode sheet.

[0033] In order to achieve the scraping and descaling function, scraping parts capable of frictionally contacting the diaphragm and the corresponding electrode sheet are respectively formed at the crests and troughs of the first separator.

[0034] In order to provide all-round protection for the electrode sheet, the insulating screen is flexible and corresponds to the electrode sheet. The first screen portion and the second screen portion are connected end to end to form a closed loop structure and surround the outer periphery of the corresponding electrode sheet.

[0035] In order to realize the driving of the insulating screen, a driving mechanism for driving the insulating screen to move along its closed loop is also included.

[0036] In order to drive the insulating screen to move along its closed loop, the driving mechanism includes

[0037] A driving wheel rotatably connected to the tank body;

[0038] A driven wheel is spaced apart from the driving wheel and rotatably connected to the tank body;

[0039] a transmission belt, which surrounds the outer circumference of the transmission belt, is wound around the peripheral walls of the driving wheel and the driven wheel, and is in driving connection with the driving wheel and the driven wheel, and the insulating screen extends along the forward direction of the corresponding transmission belt and is connected to the transmission belt; and

[0040] The driving member is arranged on the outside of the tank body, and its power output shaft is connected to the driving wheel to drive the driving wheel to rotate around its own axis and drive the insulating screen to move along its closed loop through the transmission belt.

[0041] Compared with the prior art, the advantages of the present invention are:

[0042] (1) By forming an insulating screen with a first screen portion and a second screen portion having different ion blocking degrees, the insulating screen can be moved along its extension direction to separate the first screen portion and the second screen portion between two electrode sheets to adjust the system resistance, thereby facilitating the constant current when the electrolyte concentration decreases, thereby stabilizing the pH of the effluent water;

[0043] (2) The movement of the insulating screen forms a dynamic turbulence, which accelerates exhaust, inhibits scale deposition, and accelerates ion transfer. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 This is a schematic diagram of the three-dimensional structure of Example 1 of the electrolytic cell of the present invention when the insulating screen is in a first state;

[0045] Figure 2 for Figure 1 Schematic diagram of the three-dimensional exploded view of the electrolytic cell;

[0046] Figure 3 for Figure 2 Schematic diagram of the three-dimensional structure of the middle insulating screen and the driving mechanism;

[0047] Figure 4 for Figure 1 A longitudinal cross-sectional view of the electrolytic cell;

[0048] Figure 5 for Figure 4 Enlarged view of part I;

[0049] Figure 6 FIG1 is a longitudinal cross-sectional view of Example 1 of the electrolytic cell of the present invention with the insulating screen in a second state;

[0050] Figure 7 Schematic diagram of the three-dimensional structure of the insulating screen and the driving mechanism in Example 2 of the electrolytic cell of the present invention;

[0051] Figure 8 FIG1 is a longitudinal cross-sectional view of Example 2 of the electrolytic cell of the present invention, with the insulating screen in a first state;

[0052] Figure 9 for Figure 8 Enlarged view of part II;

[0053] Figure 10 FIG4 is a longitudinal cross-sectional view of Example 2 of the electrolytic cell of the present invention, with the insulating screen in a second state;

[0054] Figure 11 Schematic diagram of the three-dimensional structure of the insulating screen and the driving mechanism in Example 3 of the electrolytic cell of the present invention;

[0055] Figure 12 FIG4 is a longitudinal cross-sectional view of Example 3 of the electrolytic cell of the present invention, with the insulating screen in a first state;

[0056] Figure 13 for Figure 12 Enlarged view of part III;

[0057] Figure 14 This is a longitudinal cross-sectional view of Example 3 of the electrolytic cell of the present invention when the insulating screen is in the second state. DETAILED DESCRIPTION

[0058] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0059] In the present specification and claims, directional terms such as "front," "back," "up," "down," "left," "right," "side," "top," and "bottom" are used to describe various exemplary structural parts and components of the present invention. However, these terms are used herein for convenience of description only and are based on the exemplary orientations shown in the accompanying drawings. Because the embodiments disclosed herein can be arranged in various orientations, these directional terms are intended for illustrative purposes only and should not be construed as limiting. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0060] Example 1:

[0061] like Figures 1 to 6 FIG. 1 shows a first preferred embodiment of an electrolytic cell according to the present invention. The electrolytic cell comprises a cell body 1, a diaphragm 2, an electrode sheet 3, an insulating screen 4, and a drive mechanism 5. The electrolytic cell in this embodiment is a single-diaphragm cell, but can also be designed as a dual-diaphragm cell or a diaphragm-free cell as needed.

[0062] The tank body 1 is formed by two covers 11 assembled front and back by fasteners, and a closed inner cavity is formed between the two covers 11; two annular sealing gaskets 12 arranged in sequence front and back are sandwiched between the two opposite end faces of the two covers 11.

[0063] The diaphragm 2 is a cation exchange membrane, arranged vertically in the inner cavity of the above-mentioned tank body 1, and the periphery of the diaphragm 2 is sandwiched between the above-mentioned two annular sealing gaskets 12. The above-mentioned diaphragm 2 is in one piece and divides the inner cavity of the tank body 1 into two electrode chambers 110. The electrode chamber 110 located between the front cover body 11 and the diaphragm 2 is denoted as the cathode chamber 110a, and the electrode chamber 110 located between the rear cover body 11 and the diaphragm 2 is denoted as the anode chamber 110b. The lower and upper portions of each cover body 11 are respectively provided with a liquid inlet 111 and a liquid outlet 112 that penetrate the corresponding electrode chamber 110. Therefore, the water in each electrode chamber 110 flows from bottom to top.

[0064] The electrode sheets 3 are a pair, designated as a cathode sheet 3a and an anode sheet 3b. The cathode sheet 3a is vertically positioned substantially in the center of the cathode chamber 110a, while the anode sheet 3b is vertically positioned substantially in the center of the anode chamber 110b. Each electrode sheet 3 has a conductive post 31 on its side, extending through the corresponding housing 11 and exposed on the sidewall of the housing 11. The conductive posts 31 on the cathode sheet 3a and anode sheet 3b are respectively configured to electrically connect to the negative and positive electrodes of an external power source.

[0065] There are two insulating screens 4, one corresponding to each of the two electrode chambers 110, and each located within the corresponding electrode chamber 110. Each insulating screen 4 is flexible and designed in a crawler-like manner. Specifically, the insulating screen 4 includes a first screen portion 41 and a second screen portion 42 spaced apart along its extension direction. The first screen portion 41 and the second screen portion 42 are connected end to end to form a closed loop structure, which surrounds the outer periphery of the corresponding electrode sheet 3.

[0066] In this embodiment, the first and second screen sections 41, 42 have different flow areas and therefore different degrees of ion obstruction. Specifically, the surfaces of the first and second screen sections 41, 42 are each provided with a plurality of mesh holes 40 for fluid passage. The first and second screen sections 41, 42 have the same number of mesh holes 40, but different pore sizes.

[0067] The above-mentioned insulating screen 4 has the following functions: first, the insulating screen 4 surrounds the outer periphery of the corresponding electrode sheet 3, which can effectively prevent the diaphragm 2 from contacting the electrode sheet 3 and causing dry burning; second, the water flow can form local micro-turbine flow in the process of passing through the mesh 40, accelerating exhaust, inhibiting scale deposition, and accelerating ion transfer.

[0068] In this embodiment, the insulating screen 4 is made of a material (food grade) that is resistant to high and low temperatures, strong acids and alkalis, and has good insulation properties, preferably food grade Teflon; the porosity of the insulating screen 4 is greater than 1%, preferably 50%, the thickness of the insulating screen 4 is greater than 0.1 mm, preferably 0.4 mm, the shape of the mesh 40 of the insulating screen 4 is preferably a square hole, the side length of the square hole of the first screen part 41 is preferably 1 mm, and the side length of the square hole of the second screen part 42 is preferably 2 mm, so as to maximize the micro-turbulence formed when the water flow passes through the mesh 40.

[0069] There are two sets of driving mechanisms 5 , one corresponding to each of the above-mentioned insulating screens 4 . Each driving mechanism 5 is used to drive the corresponding insulating screen 4 to move along its extension direction, and includes a driving wheel 51 , a driven wheel 52 , a conveyor belt 53 and a driving member 54 . Specifically, the two ends of the driving wheel 51 are rotatably connected to the corresponding cover body 11 through a rotating shaft and are located directly below the corresponding electrode sheet 3; the two ends of the driven wheel 52 are rotatably connected to the corresponding cover body 11 through a rotating shaft and are located directly above the corresponding electrode sheet 3; the transmission belt 53 is wrapped around the outer circumference of the transmission belt 53, wound around the peripheral walls of the driving wheel 51 and the driven wheel 52, and is transmission-connected to the driving wheel 51 and the driven wheel 52. The above-mentioned insulating screen 4 extends along the forward direction of the corresponding transmission belt 53 and is connected to the transmission belt 53. In this embodiment, the transmission belt 53 and the wall surface of the insulating screen 4 are an integral part and are located in the middle position of the insulating screen 4; the driving member 54 is a motor, which is installed on the outside of the corresponding cover body 11. Its power output shaft passes through the cover body 11 and extends into the corresponding electrode chamber 110 and is connected to the corresponding driving wheel 51, so as to drive the driving wheel 51 to rotate around its own axis and drive the insulating screen 4 to move along its closed loop through the transmission belt 53.

[0070] During the cyclic movement of the insulating screen 4, it can enter and exit between the diaphragm 2 and the corresponding electrode sheet 3 and has at least two states:

[0071] In the first state, the first partition 41 is separated between the diaphragm 2 and the corresponding electrode sheet 3;

[0072] In the second state, the second partition 42 is separated between the diaphragm 2 and the corresponding electrode sheet 3 .

[0073] Example 2:

[0074] like Figures 7 to 10 FIG. 2 is a second preferred embodiment of the electrolytic cell of the present invention. The difference from Example 1 is that:

[0075] In this embodiment, the first mesh portion 41 and the second mesh portion 42 have the same number of mesh holes 40 and the same aperture, but only the surfaces on both sides of the first mesh portion 41 are arranged with multiple spaced bristles 411. On the one hand, due to the design of the bristles 411, the first mesh portion 41 has a greater degree of ion obstruction than the second mesh portion 42; on the other hand, the bristles 411 can come into frictional contact with the diaphragm 2 or the corresponding electrode sheet 3 during the circulating movement with the insulating mesh 3, thereby cleaning and scraping scale.

[0076] In this embodiment, the mesh 40 of the insulating screen 4 is preferably in the shape of a square hole, and the side length of the square hole is preferably 1 mm; the diameter of the bristles 411 is greater than 0.1 mm, and is preferably 0.2 mm.

[0077] In this embodiment, the plane passing through the axis of the driving wheel 51 and the axis of the driven wheel 52 is in the same plane as the corresponding electrode sheet 3, so that the bristles 411 on the inner side of the first screen portion 41 can frictionally contact the surfaces on both sides of the electrode sheet 3 in turn during the circular movement of the insulating screen 4.

[0078] Example 3:

[0079] like Figures 11 to 14 FIG. 3 is a third preferred embodiment of the electrolytic cell of the present invention. The difference from Example 1 is that:

[0080] In this embodiment, the first mesh portion 41 and the second mesh portion 42 have the same number of mesh holes 40 and the same aperture, but only the cross-section of the first mesh portion 41 is a triangular wave structure. On the one hand, since the first mesh portion 41 is a folded mesh and the second mesh portion 42 is a flat mesh, the ion transfer path can be shortened (from a zigzag to a straight path) during the process of switching from a folded mesh to a flat mesh, so the first mesh portion 41 has a greater degree of obstruction to ions than the second mesh portion 42; on the other hand, scraping portions 412 are formed at the crests and troughs of the first mesh portion 41 respectively, which can frictionally contact the diaphragm 2 and the corresponding electrode sheet 3, thereby achieving scraping and descaling.

[0081] In this embodiment, the width of the transmission belt 53 is 2 mm; the folding angle of the first screen portion 41 is 0-180°, preferably 135°; the mesh 40 of the insulating screen 4 is preferably square, and the side length of the square is preferably 1 mm.

[0082] In this embodiment, the plane passing through the axis of the driving wheel 51 and the axis of the driven wheel 52 is in the same plane as the corresponding electrode sheet 3, so that the scraping portion 412 formed at the peaks and valleys of the first screen portion 41 can frictionally contact the surfaces on both sides of the electrode sheet 3 in sequence during the cyclic movement of the insulating screen 4.

[0083] Taking Example 3 as an example, the working principle of the present invention is as follows:

[0084] (1) In the initial state, if Figure 12 and Figure 13 As shown, the insulating screen 4 is in the first state, and the first screen portion 41 is separated between the diaphragm 2 and the corresponding electrode sheet 3;

[0085] Electrolyte and soft water are introduced into the cathode chamber 110a and the anode chamber 110b, respectively. A reduction reaction occurs at the interface between the cathode sheet 3a and the solution, and an oxidation reaction occurs at the interface between the anode sheet 3b and the solution, to produce electrolyzed water. The produced alkaline electrolyzed water is discharged from the anode chamber 110b. During the electrolysis process, first, the insulating screen 4 surrounds the outer periphery of the corresponding electrode sheet 3, which can effectively prevent the diaphragm 2 from contacting the electrode sheet 3 and causing dry burning. Second, the water flow can form local micro-turbulence in the process of passing through the mesh 40, accelerating exhaust, inhibiting scale deposition, and accelerating ion transfer.

[0086] (2) During the electrolysis process, as the electrolyte concentration decreases, the system resistance increases. The driving member 54 can be started to drive the active wheel 51 to rotate, thereby driving the insulating screen 4 to move along its closed loop through the transmission belt 53, so that the first screen portion 41 gradually leaves the space between the diaphragm 2 and the corresponding electrode sheet 3, and the second screen portion 42 gradually enters the space between the diaphragm 2 and the corresponding electrode sheet 3. Since the second screen portion 42 has a lower degree of ion obstruction than the first screen portion 41, the system resistance decreases accordingly, eliminating the change in system resistance caused by the decrease in electrolyte concentration, thereby maintaining the current unchanged when the voltage is constant, extending the electrolyte's available electrolysis time, and reducing the frequency of electrolyte replacement (pH stability can still be maintained at low concentrations);

[0087] In addition, during the cyclic movement of the insulating screen 4, on the one hand, the movement of the insulating screen 4 forms a dynamic turbulence, which can accelerate exhaust, inhibit scale deposition, and accelerate ion transfer; on the other hand, the scraping portion 412 of the insulating screen 4 is in frictional contact with the diaphragm 2 or the corresponding electrode sheet 3 during the cyclic movement, playing the role of cleaning and scraping scale;

[0088] (3) until the second mesh portion 42 completely enters between the diaphragm 2 and the corresponding electrode sheet 3. Figure 14 As shown, in the second state, the second partition 42 is separated between the diaphragm 2 and the corresponding electrode sheet 3, and the electrolysis is completed.

Claims

1. An electrolytic cell comprising a cell body (1) having an electrode chamber (110), wherein a pair of spaced-apart electrode sheets (3) are provided in the electrode chamber (110), characterized in that: An insulating screen (4) is provided in the electrode chamber (110), and the insulating screen (4) includes a first screen portion (41) and a second screen portion (42) arranged at intervals along its extension direction. The surfaces of the first screen portion (41) and the second screen portion (42) are both provided with a plurality of mesh holes (40) for fluid to pass through, and the first screen portion (41) and the second screen portion (42) are respectively selected from screens with different degrees of ion obstruction. The insulating screen (4) is flexible and corresponds to the electrode sheet (3). The first screen portion (41) and the second screen portion (42) are connected end to end to form a closed loop structure and surround the outer periphery of the corresponding electrode sheet (3). The insulating screen (4) can move along its extension direction under the action of an external force and enter and exit between the two electrode sheets (3), and has at least two states: In the first state, the first partition portion (41) is separated between the two electrode sheets (3); In the second state, the second partition portion (42) is separated between the two electrode sheets (3).

2. The electrolytic cell according to claim 1, wherein: The first screen portion (41) and the second screen portion (42) have different flow areas.

3. The electrolytic cell according to claim 2, wherein: The mesh holes (40) of the first partition net portion (41) and the second partition net portion (42) have different pore sizes.

4. The electrolytic cell according to claim 2, wherein: A diaphragm (2) is provided in the tank body (1), and the diaphragm (2) divides the inner cavity of the tank body (1) into at least two electrode chambers (110). The two electrode sheets (3) are respectively provided in the two electrode chambers (110), and the insulating screen (4) corresponds to the electrode sheets (3); In the first state, the first partition portion (41) is separated between the diaphragm (2) and the corresponding electrode sheet (3); In the second state, the second partition portion (42) is separated between the diaphragm (2) and the corresponding electrode sheet (3).

5. The electrolytic cell according to claim 1, wherein: A plurality of brush bristles (411) arranged at intervals are arranged only on the surface of the first partition net portion (41).

6. The electrolytic cell according to claim 5, characterized in that: A diaphragm (2) is provided in the tank body (1), and the diaphragm (2) divides the inner cavity of the tank body (1) into at least two electrode chambers (110). The two electrode sheets (3) are respectively provided in the two electrode chambers (110), and the insulating screen (4) corresponds to the electrode sheets (3); In the first state, the first partition portion (41) is separated between the diaphragm (2) and the corresponding electrode sheet (3); In the second state, the second partition portion (42) is separated between the diaphragm (2) and the corresponding electrode sheet (3).

7. The electrolytic cell according to claim 6, characterized in that: The surfaces on both sides of the first screen portion (41) are provided with the brush bristles (411), which are used for frictional contact with the diaphragm (2) and the corresponding electrode sheet (3), respectively.

8. The electrolytic cell according to claim 1, wherein: Only the cross section of the first partition part (41) is a wave-shaped structure.

9. The electrolytic cell according to claim 8, characterized in that: A diaphragm (2) is provided in the tank body (1), and the diaphragm (2) divides the inner cavity of the tank body (1) into at least two electrode chambers (110). The two electrode sheets (3) are respectively provided in the two electrode chambers (110), and the insulating screen (4) corresponds to the electrode sheets (3); In the first state, the first partition portion (41) is separated between the diaphragm (2) and the corresponding electrode sheet (3); In the second state, the second partition portion (42) is separated between the diaphragm (2) and the corresponding electrode sheet (3).

10. The electrolytic cell according to claim 9, characterized in that: Scraping portions (412) capable of frictionally contacting the diaphragm (2) and the corresponding electrode sheet (3) are respectively formed at the wave crests and wave troughs of the first separation mesh portion (41).

11. The electrolytic cell according to any one of claims 1 to 10, characterized in that: It also includes a driving mechanism (5) for driving the insulating screen (4) to move along its closed loop.

12. The electrolytic cell according to claim 11, characterized in that: The driving mechanism (5) includes A driving wheel (51) is rotatably connected to the tank body (1); A driven wheel (52) is spaced apart from the driving wheel (51) and is rotatably connected to the tank body (1); A transmission belt (53) is wound around the outer periphery of the transmission belt (53), around the peripheral walls of the driving wheel (51) and the driven wheel (52), and is transmission-connected to the driving wheel (51) and the driven wheel (52); the insulating screen (4) extends along the forward direction of the corresponding transmission belt (53) and is connected to the transmission belt (53); and A driving member (54) is arranged outside the tank body (1), and its power output shaft is connected to the driving wheel (51) to drive the driving wheel (51) to rotate around its own axis and drive the insulating screen (4) to move along its closed loop through the transmission belt (53).

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