Electrolytic tank of sodium hypochlorite generator

Abstract

The utility model discloses an electrolytic bath of a sodium hypochlorite generator. The electrolytic bath comprises a bath body, an anode assembly; a cathode assembly; an electrolyte inlet and an electrolyte outlet; the diaphragm is fixedly arranged in the tank body and is positioned between the anode assembly and the cathode assembly, and the diaphragm is an ion exchange membrane; the temperature adjusting device is mounted outside the tank body; compared with the prior art, the electrode cleaning device has the advantages that through the arrangement of the electrode cleaning mechanism, the anode plates and the cathode plates can be cleaned regularly, impurities attached to the surfaces of the anode plates and the cathode plates can be effectively removed, smooth electron transfer between electrodes and electrolyte is ensured, and the service life of the anode plates and the cathode plates is prolonged. The electrolysis efficiency is remarkably improved, the ion exchange membrane arranged in the tank body serves as a diaphragm, mixing of an anode product and a cathode product can be effectively prevented, the purity of generated sodium hypochlorite is higher, the anode plate and the cathode plate are each of a net-shaped structure, the contact area of an electrode and electrolyte is increased, and therefore the overall electrolysis efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of sodium hypochlorite generator electrolytic cell device, specifically to a sodium hypochlorite generator electrolytic cell. Background Technology

[0002] A sodium hypochlorite generator electrolytic cell is a key piece of equipment used to produce sodium hypochlorite solution by electrolyzing brine. Traditional sodium hypochlorite generator electrolytic cells have revealed numerous defects during long-term use. Regarding the electrode plates, due to the complex chemical reactions during electrolysis, various impurities easily adhere to the surfaces of the anode and cathode plates. These impurities mainly originate from minerals in the electrolyte, microorganisms, and byproducts generated during electrolysis.

[0003] Impurities adhering to the electrode plate surface can cause serious problems. Firstly, these impurities hinder electron transfer between the electrode and the electrolyte, significantly reducing electrolysis efficiency. What would otherwise be a highly efficient electrolytic reaction is slowed down by these impurities, drastically increasing the time required to produce the same amount of sodium hypochlorite, thus impacting overall production efficiency. Secondly, the accumulation of impurities also exacerbates electrode corrosion. The presence of impurities disrupts the chemical balance on the electrode surface, making the electrode more susceptible to electrolyte corrosion, shortening its lifespan, and increasing equipment maintenance costs and the frequency of electrode replacement. Utility Model Content

[0004] (I) Technical Issues

[0005] This invention provides a sodium hypochlorite generator electrolytic cell that can effectively solve the problem of impurity adhesion on the electrode plate surface and improve electrolysis efficiency.

[0006] (II) Technical Content

[0007] To solve the above-mentioned technical problems, the technical solution of this utility model is: a sodium hypochlorite generator electrolytic cell, comprising:

[0008] A tank having an inner cavity for containing electrolyte;

[0009] An anode assembly is fixedly disposed in the inner cavity of the tank. The anode assembly includes an anode plate and an anode conductive rod connected to the anode plate. The anode plate is made of a titanium-based metal oxide coating material, and the anode conductive rod is used to connect the anode plate to the positive terminal of an external power source.

[0010] A cathode assembly is disposed in the inner cavity of the tank and arranged opposite to the anode assembly. The cathode assembly includes a cathode plate and a cathode conductive rod connected to the cathode plate. The cathode plate is made of stainless steel, and the cathode conductive rod is used to connect the cathode plate to the negative terminal of an external power source.

[0011] The electrolyte inlet and outlet are located on the tank body, and flow control valves are installed at both the electrolyte inlet and outlet.

[0012] A diaphragm is fixedly disposed inside the tank and located between the anode assembly and the cathode assembly; the diaphragm is an ion exchange membrane.

[0013] A temperature regulating device is installed outside the tank.

[0014] The electrode cleaning mechanism, fixedly mounted at the upper end of the tank, is used to clean the cathode and anode plates.

[0015] Furthermore, a drain outlet is provided at the bottom of the tank, and a drain valve is installed at the drain outlet.

[0016] Furthermore, both the anode plate and the cathode plate have a mesh structure.

[0017] Furthermore, the temperature regulating device includes a cooling jacket fixedly surrounding the outside of the tank, and a temperature sensor fixedly disposed inside the inner cavity of the tank. The water inlet of the cooling jacket is connected to a water supply pump. It also includes a PLC controller, and the temperature sensor and the water supply pump are both electrically connected to the PLC controller.

[0018] Furthermore, the electrode cleaning mechanism includes a guide rail fixedly mounted on the top of the tank, a slider slidably mounted on the lower end of the guide rail, a drive mechanism for driving the slider to reciprocate, and a cleaning brush fixedly connected below the slider, with the cleaning brush positioned on the sides of the anode plate and cathode plate respectively.

[0019] (III) Technical Effects

[0020] The advantages of this utility model compared with the prior art are as follows:

[0021] 1. By setting up an electrode cleaning mechanism, the coordinated operation of the guide rail, slider, drive mechanism, and cleaning brush can periodically clean the anode and cathode plates, effectively removing impurities attached to the surface, ensuring smooth electron transfer between the electrode and the electrolyte, and significantly improving electrolysis efficiency. Compared with traditional electrolytic cells, it can greatly shorten the time required to produce the same amount of sodium hypochlorite. The electrode cleaning mechanism removes impurities in a timely manner, avoiding corrosion of the electrodes by impurities, thus extending the service life of the anode and cathode plates, reducing equipment maintenance costs and electrode replacement frequency, and improving the overall stability and reliability of the equipment.

[0022] 2. The ion exchange membrane installed in the tank acts as a diaphragm, effectively preventing the mixing of anolyte and cathode products, resulting in higher purity sodium hypochlorite and meeting the needs of more applications with strict purity requirements. Both the anode and cathode plates adopt a mesh structure, increasing the contact area between the electrodes and the electrolyte, further improving the electrolysis reaction rate, and thus enhancing the overall electrolysis efficiency. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of an electrolytic cell for a sodium hypochlorite generator according to this utility model. Figure 1 .

[0024] Figure 2 This is a three-dimensional structural diagram of an electrolytic cell for a sodium hypochlorite generator according to this utility model. Figure 2 .

[0025] Figure 3 This is a three-dimensional structural diagram of an electrolytic cell for a sodium hypochlorite generator according to this utility model. Figure 3 .

[0026] Figure 4 This is a schematic diagram of the main structure of an electrolytic cell for a sodium hypochlorite generator according to this utility model.

[0027] Figure 5 This is a top view schematic diagram of the electrolytic cell of a sodium hypochlorite generator according to this utility model.

[0028] Figure 6 This is a schematic diagram of the cross-sectional structure of an electrolytic cell for a sodium hypochlorite generator according to this utility model.

[0029] As shown in the figure: 1. Tank; 2. Anode plate; 3. Anode conductive rod; 4. Cathode plate; 5. Cathode conductive rod; 6. Inlet; 7. Outlet; 8. Flow control valve; 9. Diaphragm; 10. Drain outlet; 11. Drain valve; 12. Cooling jacket; 13. Temperature sensor; 14. Water pump; 15. PLC controller; 16. Guide rail; 17. Slider; 18. Cleaning brush; 19. Motor; 20. Cooling jacket drain outlet; 21. Lead screw. Detailed Implementation

[0030] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "center", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation structure and operation. Therefore, they should not be construed as limitations on this utility model.

[0031] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "provided with," "installed," "connected," "linked," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] The present invention will now be described in further detail with reference to the accompanying drawings.

[0033] Combined with appendix Figure 1 To be continued Figure 6 An electrolytic cell for a sodium hypochlorite generator includes: a tank body 1 having an inner cavity for containing electrolyte; an anode assembly fixedly disposed within the inner cavity of the tank body 1, the anode assembly including an anode plate 2 and an anode conductive rod 3 connected to the anode plate 2, the anode plate 2 being made of a titanium-based metal oxide coating material, and the anode conductive rod 3 being used to connect the anode plate to the positive terminal of an external power source; and a cathode assembly disposed within the inner cavity of the tank body 1 and arranged opposite to the anode assembly, the cathode assembly including a cathode plate 4 and a cathode conductive rod 5 connected to the cathode plate 4, the cathode plate 4 being made of stainless steel. The tank 1 is made of a material with a cathode conductive rod 5 for connecting the cathode plate 4 to the negative terminal of an external power source; an electrolyte inlet 6 and an outlet 7 are provided on the tank body 1, and a flow control valve 8 is provided at both the electrolyte inlet 6 and the outlet 7; a diaphragm 9 is fixedly installed inside the tank body 1 and located between the anode and cathode assemblies, and the diaphragm 9 is an ion exchange membrane; a temperature regulating device is installed outside the tank body; an electrode cleaning mechanism is fixedly installed at the upper end of the tank body 1 for cleaning the cathode and anode plates, and a drain outlet 10 is provided at the bottom of the tank body 1, with a drain valve 11 installed at the drain outlet 10. Both the anode plate 2 and the cathode plate 4 have a mesh structure.

[0034] The temperature regulating device includes a cooling jacket 12 fixedly surrounding the outside of the tank body 1, and a temperature sensor 13 fixedly disposed inside the cavity of the tank body 1. The water inlet of the cooling jacket 12 is connected to a water supply pump 14. The device also includes a PLC controller 15. The temperature sensor 13 and the water supply pump 14 are both electrically connected to the PLC controller 15.

[0035] The electrode cleaning mechanism includes a guide rail 16 fixedly mounted on the top of the tank 1, a slider 17 slidably mounted on the lower end of the guide rail 16, a drive mechanism for driving the slider 17 to reciprocate, and a cleaning brush 18 fixedly connected below the slider 17. The cleaning brush 18 is arranged on the side of the anode plate and the cathode plate.

[0036] The working principle of the sodium hypochlorite generator electrolytic cell of this utility model is as follows:

[0037] 1. Electrolysis Principle: The anode plate 2 in the anode assembly is made of titanium-based metal oxide coated material and is connected to the positive terminal of the external power supply via the anode conductive rod 3. After energization, the anode plate 2 can stably provide electrons, initiating an oxidation reaction. The cathode plate 4 in the cathode assembly is made of stainless steel and is connected to the negative terminal of the external power supply via the cathode conductive rod 5. The cathode plate 4 receives electrons and undergoes a reduction reaction. In the electrolyte between the anode and cathode, the electrolysis process is achieved through the directional movement of ions, thereby producing sodium hypochlorite.

[0038] 2. Temperature Regulation Principle: Temperature sensor 13 monitors the temperature of the electrolyte in the inner cavity of tank 1 in real time and transmits the temperature signal to PLC controller 15. When the electrolyte temperature is higher than the set optimal electrolysis temperature range, PLC controller 15 controls water supply pump 14 to work, causing cooling water in cooling jacket 12 to circulate, carrying away the heat generated during electrolysis and lowering the electrolyte temperature; when the temperature is lower than the set range, the electrolyte temperature can be raised back to the appropriate range by stopping water supply pump 14 or adjusting water flow rate, thereby ensuring that the electrolyte is always at the optimal electrolysis temperature.

[0039] 3. Electrode Cleaning Principle: The drive mechanism drives the slider 17 to reciprocate on the guide rail 16, and the cleaning brush 18 connected below the slider 17 moves accordingly. The cleaning brush 18 is arranged on the side of the anode plate 2 and the cathode plate 4. During the movement, the cleaning brush 18 brushes the surface of the anode plate 2 and the cathode plate 4 to remove impurities attached to the electrode surface, ensuring the activity of the electrode and the electrolysis efficiency. The drive mechanism includes a lead screw 21 that rotates below the guide rail 16, and a motor 19 for driving the lead screw 21 to rotate. The lead screw 21 is threadedly connected to the slider 17.

[0040] The working process of the sodium hypochlorite generator electrolytic cell of this utility model is as follows:

[0041] 1. Preparation Stage: Inject an appropriate amount of electrolyte into the inner cavity of tank 1 through electrolyte inlet 6. Precisely control the inflow rate and velocity of the electrolyte using flow control valve 8. Once the appropriate liquid level is reached, close flow control valve 8 at inlet 6. Connect the anode conductive rod 3 to the positive terminal of the external power supply and the cathode conductive rod 5 to the negative terminal of the external power supply, ensuring a normal circuit connection. Turn on the PLC controller 15 of the temperature regulation device and set the optimal electrolysis temperature range for the electrolyte.

[0042] 2. Electrolysis Stage: Upon connection to an external power source, the electrolysis reaction begins. Oxidation occurs on the anode plate 2, and reduction occurs on the cathode plate 4. Ions in the electrolyte move directionally under the influence of the electric field, continuously producing sodium hypochlorite. Temperature sensor 13 monitors the electrolyte temperature in real time and transmits the temperature signal to the PLC controller 15. If the temperature exceeds the set range, the PLC controller 15 controls the water pump 14 to operate, adjusting the water flow rate in the cooling jacket 12 to regulate the electrolyte temperature. During electrolysis, the generated sodium hypochlorite solution continuously accumulates in the inner cavity of the tank 1.

[0043] 3. Electrode Cleaning Stage: When the preset cleaning time is reached or when it is observed that there are many impurities on the surface of the electrode plate, the electrode cleaning mechanism is activated. The drive mechanism starts working, driving the slider 17 to reciprocate on the guide rail 16. The cleaning brush 18 below the slider 17 thoroughly brushes the surfaces of the anode plate 2 and the cathode plate 4 to remove the attached impurities.

[0044] 4. Drainage and Sewage Discharge Stage: After electrolysis is completed, open the flow control valve 8 at the electrolyte outlet 7 to discharge the electrolyzed sodium hypochlorite solution from the tank 1 through the outlet 7. After drainage is completed, open the drain valve 11 at the drain port 10 to discharge the impurities and sediments accumulated at the bottom of the tank 1 through the drain port 10, and then close the drain valve 11.

[0045] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A sodium hypochlorite generator electrolytic cell, characterized by, The utility model relates to a kind of electrolytic cell, including: Groove body (1), the inner cavity of the groove body (1) is accommodated electrolyte; Anode assembly, fixedly arranged in the inner cavity of the groove body (1), anode assembly includes anode plate (2) and the anode conductive rod (3) connected with anode plate (2), anode plate (2) is made of titanium-based metal oxide coating material, anode conductive rod (3) is used to connect the positive pole of external power supply with anode plate; Cathode assembly, arranged in the inner cavity of the groove body (1) and opposite to the anode assembly, cathode assembly includes cathode plate (4) and the cathode conductive rod (5) connected with cathode plate (4), the cathode plate (4) is made of stainless steel material, cathode conductive rod (5) is used to connect the negative pole of external power supply with cathode plate (4); Electrolyte inlet (6) and outlet (7) are opened in the groove body (1), and the electrolyte inlet (6) and outlet (7) are provided with flow control valve (8); Diaphragm (9), fixedly arranged in the inner groove body (1) and between anode assembly and cathode assembly, the diaphragm (9) is ion exchange membrane; Temperature adjusting device, installed outside the groove body; Electrode cleaning mechanism, fixedly arranged on the upper end of groove body (1), for cleaning cathode plate and anode plate.

2. The sodium hypochlorite generator electrolytic cell of claim 1, wherein: The bottom of the groove body (1) is provided with a blowdown port (10), and a blowdown valve (11) is installed at the blowdown port (10).

3. The sodium hypochlorite generator electrolytic cell of claim 1, wherein: The anode plate (2) and the cathode plate (4) are both in a mesh structure.

4. The sodium hypochlorite generator electrolytic cell of claim 1, wherein: The temperature adjusting device includes a cooling jacket (12) fixedly arranged around the outside of the groove body (1), and a temperature sensor (13) fixedly arranged in the inner cavity of the groove body (1), the water inlet of the cooling jacket (12) is connected with a water supply pump (14), and a PLC controller (15) is further included, the temperature sensor (13) and the water supply pump (14) are electrically connected with the PLC controller (15).

5. The sodium hypochlorite generator electrolytic cell of claim 1, wherein: The electrode cleaning mechanism includes a guide rail (16) fixedly arranged on the top of the groove body (1), a sliding block (17) slidingly arranged at the lower end of the guide rail (16), a driving mechanism fixedly arranged at the lower end of the guide rail (16) for driving the sliding block (17) to move back and forth, a cleaning brush (18) fixedly connected below the sliding block (17), and the cleaning brush (18) is arranged corresponding to the side surface of the anode plate and the cathode plate.

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