An apparatus for electrolysis

Abstract

The utility model discloses a device for electrolysis, include: electrolytic cell, its inside is equipped with diaphragm, and this diaphragm divides electrolytic cell into first cavity and second cavity, the lateral wall of electrolytic cell is equipped with the air hole for exhausting, the liquid injection hole for injecting liquid and the liquid discharge hole for discharging solution, the electrode stick is equipped on the electrolytic cell inner wall for connecting power supply, the cover plate is sealed in electrolytic cell, the cover plate inboard is equipped with the suspension pedestal, the drive mechanism is installed in the cover plate outside, and the drive mechanism includes motor, and the first magnet is installed on the motor working shaft, the stirring mechanism is set up in the cover plate inboard, and it includes: the second magnet of rotary installation in the suspension pedestal, the stirring unit is installed on the second magnet, and the stirring unit includes the suspension rod and the vane. In the utility model, the transmission is carried out between the first magnet of drive mechanism and the second magnet of stirring mechanism through the magnetic coupling, and the mechanical seal problem in the prior art is avoided.

Description

Technical Field

[0001] This utility model relates to the field of electrolysis technology, and in particular to a device for electrolysis. Background Technology

[0002] Electrolysis technology is a core branch of electrochemical engineering. Its essence is the process of using direct current to drive an electrolyte solution (or molten electrolyte) to undergo a redox reaction. When current passes through the electrodes and the electrolyte system, an oxidation reaction occurs at the anode (such as chloride ions generating chlorine gas), and a reduction reaction occurs at the cathode (such as hydrogen ions generating hydrogen gas), thereby achieving the decomposition, purification, or synthesis of substances.

[0003] Traditional electrolysis equipment commonly faces the challenge of mechanical sealing. The rotating shaft of the stirring mechanism needs to penetrate the electrolytic cell cover to transmit power. In highly corrosive solution environments, dynamic sealing elements are easily corroded and fail by chemical media, leading to solution leakage. This not only causes environmental pollution but may also trigger equipment short circuits. Furthermore, frequent replacement of seals significantly increases maintenance costs.

[0004] The bubble buildup effect during electrolysis limits efficiency to some extent. The gases continuously generated at the cathode and anode form attached bubbles on the electrode surfaces. These bubbles increase interfacial resistance and raise the cell voltage, while the accumulation of numerous bubbles on the liquid surface hinders gas escape. Conventional agitator blades are typically submerged deep in the solution, offering little to no breaking up of bubbles floating on the surface. Although adding a surface defoamer can alleviate this problem, an independent drive system complicates the structure, occupies limited cell space, and affects electrode layout. Utility Model Content

[0005] To address the above issues and overcome the shortcomings of existing technologies, this invention provides a fully sealed magnetically driven electrolysis device. In this invention, the external drive mechanism and the internal stirring mechanism of the electrolytic cell are not mechanically connected; instead, they are driven by magnetic coupling between the first magnet of the drive mechanism and the second magnet of the stirring mechanism. When the first magnet rotates, it drives the second magnet to rotate synchronously. Therefore, the electrolysis device provided by this invention maintains a fully sealed state during use, eliminating the risk of seal failure due to the rotating shaft penetrating the cover plate and avoiding the mechanical seal problems of existing technologies.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model provides a device for electrolysis, comprising:

[0008] An electrolytic cell has an internal diaphragm that divides the electrolytic cell into a first chamber and a second chamber.

[0009] The side wall of the first cavity is provided with a first vent hole for venting, a first injection hole for injecting liquid into the first cavity, and a first drain hole for discharging the solution.

[0010] The side wall of the second cavity is provided with a second vent hole for venting, a second injection hole for injecting liquid into the second cavity, and a second drain hole for discharging the solution.

[0011] Multiple cathode rods are disposed on the inner wall of the electrolytic cell and extend toward the first cavity;

[0012] Multiple anode rods are disposed on the inner wall of the electrolytic cell and extend into the second cavity;

[0013] A cover plate is sealed and installed on the electrolytic cell; a suspension base is provided on the side of the cover plate facing the electrolytic cell;

[0014] A drive mechanism is installed on the outside of the cover plate, the drive mechanism includes a motor, and a first magnet is installed on the working shaft of the motor.

[0015] A stirring mechanism, disposed on the cover plate, includes:

[0016] The second magnet is rotatably mounted on the suspension base via a bearing;

[0017] A stirring unit, which is mounted on the second magnet, the stirring unit includes a suspension rod and blades;

[0018] in,

[0019] When the first magnet rotates, the second magnet can rotate through non-contact magnetic coupling torque transmission, and is used to drive the stirring unit to perform stirring work.

[0020] Furthermore, the gap between the first magnet and the second magnet is 5~30mm.

[0021] Furthermore, the first magnet is an electromagnet.

[0022] Furthermore, the blades are spirally distributed along the axial direction of the suspension rod.

[0023] Furthermore, the angle between the normal of the blade and the axial direction of the suspension rod is 30 to 60 degrees.

[0024] Furthermore, the stirring unit further includes:

[0025] The defoaming rod is slidably connected to one end of the suspension rod near the second magnet;

[0026] in,

[0027] The defoaming rod can float on the surface of the solution;

[0028] When the defoaming rod rotates, it can break up air bubbles on the surface of the solution.

[0029] Furthermore, the defoaming rod is provided with a clearance cavity, and the clearance cavity is polygonal;

[0030] The suspension rod includes a guide portion and an extension portion; the guide portion is mounted on the second magnet, and the extension portion is fixedly connected to the end of the guide portion away from the second magnet; the blade is provided on the extension portion;

[0031] in,

[0032] The guide portion is polygonal;

[0033] When the guide portion is inserted into the clearance cavity of the defoaming rod, the defoaming rod can slide axially along the guide portion.

[0034] Furthermore, the clearance cavity is rectangular;

[0035] The guide section is rectangular.

[0036] in,

[0037] The defoaming rod can slide axially along the guide portion.

[0038] Furthermore, the defoaming rod is provided with protrusions for puncturing bubbles.

[0039] This utility model has at least the following advantages or beneficial effects:

[0040] This invention solves the mechanical seal leakage problem to some extent through non-contact magnetic coupling transmission. The drive mechanism is placed on the cover plate outside the electrolytic cell, and the motor transmits torque through magnetic coupling between the first magnet and the second magnet inside the electrolytic cell. This invention avoids the rotating shaft structure that penetrates the cover plate in conventional designs, reducing the risk of corrosion of dynamic sealing elements by strong acid and alkali media and ensuring the long-term sealing performance of the equipment.

[0041] The floating defoaming rod of this invention improves gas management efficiency to a certain extent. The defoaming rod forms a sliding pair with the suspension rod guide through a polygonal clearance cavity, thus ensuring the rod always floats on the liquid surface and rises and falls freely with the liquid level. When the defoaming rod rotates with the second magnet, it directly breaks up bubbles accumulated on the electrode surface and in the liquid, reducing the bubble coverage area and effectively promoting gas discharge.

[0042] The synergistic effect of the defoaming rod and blades in the stirring unit optimizes fluid control throughout the entire tank. The spirally distributed blades generate a strong axial flow field at an angle of 30-60 degrees, accelerating ion migration on the electrode surface; at the same time, the defoaming rod simultaneously treats air bubbles on the liquid surface, forming a three-dimensional stirring system. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1 This is a three-dimensional structural diagram of the equipment used for electrolysis;

[0045] Figure 2 This is a 3D view of the electrolytic cell structure;

[0046] Figure 3 This is a three-dimensional view of the cover plate;

[0047] Figure 4 This is a three-dimensional structural diagram of the cover plate, drive mechanism, and stirring mechanism.

[0048] Figure label:

[0049] 1-Electrolytic cell; 11-First cavity; 111-First gas vent; 112-First liquid injection hole; 113-First liquid discharge hole; 12-Second cavity; 121-Second gas vent; 122-Second liquid injection hole; 123-Second liquid discharge hole;

[0050] 2-Diaphragm; 3-Cathode rod; 4-Anode rod;

[0051] 5-Cover plate; 51-Suspension base;

[0052] 6-Drive mechanism; 61-Motor; 62-First magnet;

[0053] 7-Stirring mechanism; 71-Second magnet; 72-Stirring unit; 721-Suspension rod; 7211-Guide part; 7212-Extension part; 722-Blade; 723-Defoaming rod; 7231-Relief cavity; 7232-Protrusion. Detailed Implementation

[0054] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0055] It should be noted that the following detailed descriptions are exemplary and intended to provide further illustration of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0056] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0057] In this utility model, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of the structural relationship between the various parts or elements of this utility model and do not specifically refer to any part or element in this utility model. They should not be construed as limitations on this utility model.

[0058] In this utility model, terms such as "fixed", "connected", and "linked" should be interpreted broadly, indicating that it can be a fixed connection, an integral connection, or a detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. For relevant scientific researchers or technicians in this field, the specific meaning of the above terms in this utility model can be determined according to the specific circumstances, and should not be construed as a limitation of this utility model.

[0059] The embodiments of this utility model will be described in detail below.

[0060] This utility model discloses an electrolysis device, which in this embodiment is used to electrolyze potassium chloride solution to obtain potassium hydroxide solution.

[0061] Figure 1This is a perspective view of the equipment used for electrolysis. The equipment includes an electrolytic cell 1, which has a diaphragm 2 inside. The diaphragm 2 divides the interior of the electrolytic cell into a first chamber 11 and a second chamber 12. The first chamber 11 contains a cathode rod 3; the second chamber 12 contains an anode rod 4. The equipment also includes a cover plate 5, which can be sealed at the upper opening of the electrolytic cell 1. On the side of the cover plate 5 facing the electrolytic cell 1, there is an inverted T-shaped suspension base 51. In order to stir the solution, a second magnet 71 is fitted on the suspension base 51. The second magnet 71 can rotate along the axis of the suspension base 51 through bearings, thereby driving the stirring unit 72 for stirring the solution installed below the second magnet 71. In order to drive the rotation of the second magnet 71, a motor 61 is also installed on the side of the cover plate 5 away from the electrolytic cell 1, and a first magnet 62 is installed on the working shaft of the motor 61. The first magnet 62 is connected to the second magnet 71 by magnetic coupling. Therefore, there is no need to drill holes in the cover plate 5, allowing the stirring mechanism 7 to rotate on the outside of the cover plate 5 using the drive mechanism 6. This embodiment avoids the rotating shaft structure that penetrates the cover plate in conventional designs, which to some extent reduces the risk of corrosion of dynamic sealing elements by strong acid and alkali media, ensuring the long-term sealing performance of the equipment.

[0062] The specific details of this embodiment are as follows:

[0063] Figure 2 This is a three-dimensional view of the electrolytic cell 1. As can be seen from the figure, a diaphragm 2 is provided inside the electrolytic cell 1. The diaphragm 2 can be a polyphenylene sulfide (PPS) based composite diaphragm, a polysulfone based composite diaphragm, or other diaphragms capable of achieving gas isolation and ion conduction. The diaphragm 2 divides the interior of the electrolytic cell 1 into a first chamber 11 and a second chamber 12. In this embodiment, the first chamber 11 is used to store a reducing solution, and its bottom is provided with multiple cathode rods 3; the second chamber 12 is used to store an oxidizing solution, and its bottom is provided with multiple anode rods 4.

[0064] During the electrolysis reaction, gases are generated in both the first chamber 11 and the second chamber 12. Therefore, the sidewall of the first chamber 11 is provided with a first vent hole 111 for venting; the sidewall of the second chamber 12 is provided with a second vent hole 121 for venting. To add solution to the electrolytic cell 1, the sidewall of the first chamber 11 is provided with a first injection hole 112 for adding solution; the sidewall of the second chamber 12 is provided with a second injection hole 122 for adding solution. To discharge the solution after the electrolysis reaction from the electrolytic cell 1, the sidewall of the first chamber 11 is provided with a first drainage hole 113 for discharging the solution; the sidewall of the second chamber 12 is provided with a second drainage hole 123 for discharging the solution.

[0065] Figure 3This is a perspective view of the cover plate 5. As can be seen from the figure, two suspension bases 51 are provided on the side of the cover plate 5 facing the electrolytic cell 1 (the lower side of the cover plate 5 in this embodiment). The two suspension bases 51 extend towards the first cavity 11 and the second cavity 12, respectively. The suspension bases 51 are inverted T-shaped, thus restricting the components mounted on them to angular displacement only, and preventing linear displacement.

[0066] Figure 4 This is a perspective view of the cover plate 5, drive mechanism 6, and stirring mechanism 7. As can be seen from the figure, two drive mechanisms 6 are installed on the side of the cover plate 5 away from the electrolytic cell 1 (the upper side of the cover plate 5 in this embodiment). The two drive mechanisms 6 are located on opposite sides of the two suspension bases 51. Each drive mechanism 6 includes a motor 61 providing power and a first magnet 62. The motor 61 can be suspended on the bracket of the cover plate 5, so that its working shaft is close to the cover plate 5. The first magnet 62 is mounted on the working shaft of the motor 61. Therefore, the motor 61 can drive the first magnet 62 to rotate. In this embodiment, the first magnet 62 is an electromagnet, and its magnetic pole strength can be adjusted. Furthermore, in this embodiment, the two drive mechanisms 6 include two motors 61; in other embodiments, they may include only one motor 61, which drives the two first magnets 62 via gear transmission or belt transmission. In this case, the two first magnets 62 are rotatably mounted on the cover plate 5.

[0067] Two stirring mechanisms 7 are provided on the side of the cover plate 5 facing the electrolytic cell 1 (the lower side of the cover plate 5 in this embodiment). The two stirring mechanisms 7 are located in the first cavity 11 and the second cavity 12, respectively. The stirring mechanism 7 includes a second magnet 71, which is ring-shaped and rotatably mounted on the suspension base 51. Therefore, the second magnet 71 can rotate along the axial direction of the suspension base 51 without falling off. In addition, the gap between the second magnet 71 and the first magnet 62 is 5~30mm to ensure the magnetic coupling transmission effect between the two.

[0068] The second magnet 71 is connected to the end of the suspension rod 721 via multiple connecting rods. Therefore, the suspension rod 721 can rotate synchronously with the second magnet 71. The suspension rod 721 includes a guide portion 7211 near the cover plate 5 and an extension portion 7212 away from the cover plate 5.

[0069] A defoaming rod 723 for breaking up air bubbles on the solution surface is slidably connected to the guide portion 7211. The defoaming rod 723 can slide along the axial direction of the guide portion 7211 and can rotate synchronously with the guide portion 7211. In this embodiment, the guide portion 7211 is cuboid in shape with a rectangular cross-section and is inserted into a rectangular clearance cavity 7231 on the defoaming rod 723, thereby forming a sliding pair; in other embodiments, the guide portion 7211 and the clearance cavity 7231 can be polygonal, which can also form a sliding pair; in other embodiments, the guide portion 7211 and the clearance cavity 7231 can also be connected by a sliding pair such as a slider and a groove. The defoaming rod 723 is provided with multiple protrusions 7232, which can enhance the bubble breaking effect. In addition, the density of the defoaming rod 723 is less than the density of the solution, so the defoaming rod 723 can float on the solution surface and rise and fall synchronously with the solution surface. Therefore, during the production process, under the driving action of the suspension rod 721, the defoaming rod 723 can float on the solution surface and use the protrusions 7232 to break the bubbles on the solution surface, thereby reducing the bubble coverage area and effectively promoting gas discharge.

[0070] The lower end of the guide portion 7211 is connected to an extension portion 7212, on which multiple blades 722 are mounted, radiating radially and spirally distributed axially. The blades 722 are used to stir the solution within the electrolytic cell 1. In this embodiment, the blades 722 are inclined, specifically, the angle between the normal of the blades 722 and the axial direction of the extension portion 7212 is 30-60 degrees, in order to reduce stirring resistance while maintaining a good stirring effect. Therefore, during production, driven by the suspension rod 721, the blades 722 can stir the solution within the electrolytic cell 1, accelerating ion migration on the electrode surface.

[0071] Overall, in the electrolysis equipment of this embodiment, the drive mechanism 6 on the outside of the cover plate 5 and the stirring mechanism inside the electrolytic cell 1 are driven by non-contact magnetic coupling. Specifically, when the motor 61 of the drive mechanism 6 drives the first magnet 62 to rotate, the first magnet 62 drives the second magnet 71 to rotate through the cover plate 5 via magnetic coupling. Therefore, the rotating shaft structure that penetrates the cover plate 5 in conventional designs is avoided, which reduces the risk of corrosion of the dynamic sealing elements by strong acid and alkali media to a certain extent and ensures the long-term sealing performance of the equipment.

[0072] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An apparatus for electrolysis, characterized in that, include: An electrolytic cell (1) is provided inside a diaphragm (2), which divides the electrolytic cell (1) into a first chamber (11) and a second chamber (12). The sidewall of the first cavity (11) is provided with a first air hole (111) for venting, a first liquid injection hole (112) for injecting liquid into the first cavity (11), and a first liquid discharge hole (113) for discharging the solution. The sidewall of the second cavity (12) is provided with a second vent hole (121) for venting, a second injection hole (122) for injecting liquid into the second cavity (12), and a second drain hole (123) for discharging the solution. Multiple cathode rods (3) are disposed on the inner wall of the electrolytic cell (1) and extend toward the first cavity (11); Multiple anode rods (4) are disposed on the inner wall of the electrolytic cell (1) and extend toward the second cavity (12); A cover plate (5) is sealed and installed on the electrolytic cell (1); a suspension base (51) is provided on the side of the cover plate (5) facing the electrolytic cell (1); A drive mechanism (6) is installed on the side of the cover plate (5) away from the electrolytic cell (1). The drive mechanism (6) includes a motor (61) with a first magnet (62) mounted on the working shaft of the motor (61). A stirring mechanism (7), disposed on the side of the cover plate (5) facing the electrolytic cell (1), comprises: The second magnet (71) is rotatably mounted on the suspension base (51) via a bearing. A stirring unit (72) is mounted on the second magnet (71), the stirring unit (72) including a suspension rod (721) and blades (722). in, When the first magnet (62) rotates, the second magnet (71) can rotate through non-contact magnetic coupling torque transmission and is used to drive the stirring unit (72) to perform stirring work.

2. The apparatus for electrolysis according to claim 1, characterized in that, The gap between the first magnet (62) and the second magnet (71) is 5~30mm.

3. The apparatus for electrolysis according to claim 1, characterized in that, The first magnet (62) is an electromagnet.

4. The apparatus for electrolysis according to claim 1, characterized in that, The blades (722) are spirally distributed along the axial direction of the suspension rod (721).

5. The apparatus for electrolysis according to claim 1, characterized in that, The angle between the normal of the blade (722) and the axial direction of the suspension rod (721) is 30 to 60 degrees.

6. The apparatus for electrolysis according to claim 1, characterized in that, The stirring unit (72) further includes: The defoaming rod (723) is slidably connected to one end of the suspension rod (721) near the second magnet (71); in, The defoaming rod (723) can float on the surface of the solution; When the defoaming rod (723) rotates, it can break up bubbles on the surface of the solution.

7. The apparatus for electrolysis according to claim 6, characterized in that, The defoaming rod (723) is provided with a clearance cavity (7231), which is polygonal in shape; The suspension rod (721) includes a guide portion (7211) and an extension portion (7212); the guide portion (7211) is mounted on the second magnet (71), and the extension portion (7212) is fixedly connected to one end of the guide portion (7211) away from the second magnet (71); the blade (722) is provided on the extension portion (7212). in, The guide section (7211) is polygonal; The guide portion (7211) and the clearance cavity (7231) can form a sliding pair, and the defoaming rod (723) can slide along the axial direction of the guide portion (7211).

8. The apparatus for electrolysis according to claim 7, characterized in that: The clearance cavity (7231) is rectangular; The guide section (7211) is rectangular; in, The defoaming rod (723) can slide axially along the guide portion (7211).

9. The apparatus for electrolysis according to claim 6, characterized in that, The defoaming rod (723) is provided with protrusions (7232) for puncturing bubbles.

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