Salt-containing solution electrolysis equipment for sodium hypochlorite production

Abstract

The invention discloses salt-containing solution electrolysis equipment for sodium hypochlorite production, and relates to the technical field of chemical electrolysis, the salt-containing solution electrolysis equipment comprises a generator, a placing groove is formed in the generator, a pH value adjusting mechanism is arranged in the placing groove, and an auxiliary cleaning mechanism is arranged below the pH value adjusting mechanism; through the arrangement of the turbulent flow paddles, the turbulent flow paddles synchronously rotate along with cleaning work, water flow generated by the rotating paddles can enhance the mass transfer process in electrolyte, improve the transfer rate of substances, accelerate the migration and diffusion reaction speed of ions in the electrolytic reaction and improve the generation efficiency of sodium hypochlorite, and in the electrolytic process, the water flow in the electrolytic reaction is reduced. Chloride ions in the electrolyte can be subjected to oxidation reaction only when the chloride ions make full contact with the electrode, water flow generated by the rotating paddle can enable the chloride ions to be more rapidly diffused to the surface of the electrode, mixing of the electrolyte is promoted, all components in the electrolyte are more evenly distributed, the efficiency and uniformity of the electrolytic reaction can be better improved, and the service life of the electrolyte is prolonged. And stable production quality of sodium hypochlorite is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of chemical electrolysis, in particular to a salt solution electrolysis device for sodium hypochlorite production. Background Art

[0002] Sodium hypochlorite is a highly effective disinfectant, bleaching agent and oxidant, and is widely used in many fields such as water treatment, medical care, food processing, papermaking, etc. The production of sodium hypochlorite by electrolytic reaction has the advantages of easy availability of raw materials, simple production process, and high product purity, which can meet the market demand for sodium hypochlorite.

[0003] In the prior art, when sodium hypochlorite is produced by electrolytic reaction using a sodium hypochlorite generator, during the electrolysis process, as the electrolysis time increases, hypochlorite ions in the sodium hypochlorite solution continue to accumulate and the concentration gradually increases. Under certain conditions, the hypochlorite ions react with each other to generate chlorate. In addition, long-term electrolysis also causes the state of the electrode surface to change, affecting the selectivity of the electrode reaction, thereby increasing the generation of chlorate. The disinfection ability of chlorate itself is relatively weak, and compared with sodium hypochlorite, its bactericidal and disinfecting effects are significantly reduced. Therefore, when the sodium hypochlorite solution contains more chlorate by-products, the overall disinfection effect of the solution will be reduced, affecting its application in water treatment, sanitary disinfection and other fields. In addition, chlorate has certain toxicity and poses potential hazards to the environment and human health. When discharging the sodium hypochlorite solution containing chlorate, if it is not handled properly, it will cause pollution to the soil, water bodies and other environments. In addition, long-term contact with the sodium hypochlorite solution containing chlorate will cause damage to the human respiratory system, digestive system, etc. Furthermore, the generation of chlorate by-products will cause corrosion and damage to the electrodes and other components of the sodium hypochlorite generator, thereby affecting the service life and performance of the equipment.

[0004] Therefore, a salt solution electrolysis device for sodium hypochlorite production is proposed to solve the above problems. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a saline solution electrolysis device for sodium hypochlorite production to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: a salt solution electrolysis device for sodium hypochlorite production, comprising: a generator, an integrated controller is provided on the generator, an exhaust port is fixedly connected to one side of the generator, a placement slot is provided on the generator, the placement slot is located below the integrated controller, a pH adjustment mechanism is provided in the placement slot, the pH adjustment mechanism comprises an electrolytic cell body, the electrolytic cell body is fixedly connected in the placement slot, a cathode is provided in the electrolytic cell body, a diaphragm plate is provided on one side of the cathode, an anode is provided on the side of the diaphragm plate away from the cathode, a U-shaped slot is provided on the cathode, the anode and the diaphragm plate, and an auxiliary cleaning mechanism is provided below the pH adjustment mechanism;

[0007] The pH adjustment mechanism is used to adjust the pH value by adding acid or alkali according to the state of the electrolyte in the electrolytic cell, thereby reducing the generation of by-products such as oxoacid salts;

[0008] The auxiliary cleaning mechanism is used to clean the cathode and anode surfaces to reduce the presence of surface deposits and impurities, thereby improving their performance and reducing the generation of side reactions.

[0009] Preferably, the pH regulating mechanism also includes a circulation pump, the circulation pump is fixedly connected to the electrolytic cell body, an auxiliary cell body is fixedly connected to the electrolytic cell body, the cathode, anode and diaphragm plate are all fixedly connected in the electrolytic cell body, an auxiliary cell body is arranged on one side of the circulation pump, the auxiliary cell body is fixedly connected to the electrolytic cell body, a bump plate is rotatably connected to the auxiliary cell body, a movable plug is fixedly connected to the eccentric bottom of the inner cavity of the auxiliary cell body, a storage tube body is provided on the outer ring of the movable plug, a feed pipe is fixedly connected to the upper end of the storage tube body, a discharge pipe is arranged below the feed pipe and the discharge pipe is fixedly connected to the storage tube body.

[0010] Preferably, the pH adjustment mechanism also includes a funnel conduit, which is arranged on a side of the movable plug away from the protrusion plate, the funnel conduit is fixedly connected to the bottom of the auxiliary tank body, the lower end of the funnel conduit extends into the electrolytic cell body, the side of the movable plug away from the funnel conduit is slidably connected to a positioning rod, the positioning rod is fixedly connected to the bottom of the auxiliary tank body cavity, the lower end of the storage tube body is fixedly connected to a return spring, and one end of the return spring away from the storage tube body is fixedly connected to the auxiliary tank body.

[0011] Preferably, the auxiliary cleaning mechanism includes an inner driving shaft, which rotates and extends downward to pass through the bottom of the auxiliary groove body, an arc groove is provided on the outer ring of one end of the inner driving shaft passing through the auxiliary groove body, a vertical groove is provided on the inner driving shaft, positioning cavities are provided on both sides of the inner driving shaft, the positioning cavities are fixedly connected to the bottom of the auxiliary groove body, a slider is slidably connected in the positioning cavity, a sliding rod is fixedly connected to the bottom of the slider, the sliding rod extends downward to pass through the positioning cavity, an auxiliary spring is sleeved on the outer ring of the sliding rod, one end of the auxiliary spring is fixedly connected to the slider, the end of the auxiliary spring away from the slider is fixedly connected to the bottom of the positioning cavity, and the end of the sliding rod passing through the positioning cavity is fixedly connected to the driving rod, three groups of symmetrical rods are provided on the driving rod, and the symmetrical rods on the driving rod are respectively slidably connected to the U-shaped grooves provided on the cathode, the anode and the diaphragm plate, and the symmetrical rods of the driving rod are fixedly connected to wiping strips, and the wiping strips are two in a group and respectively fit the two sides of the cathode and the anode, and a spoiler paddle is fixedly connected to the end of the inner driving shaft away from the auxiliary groove body.

[0012] Preferably, the electrolytic cell body is equipped with a pH value monitoring device, the end of the auxiliary cell body away from the electrolytic cell body is equipped with an integrated dual motor, the bump plate is fixedly connected to the output shaft of the outer motor of the integrated dual motor, the bump of the bump plate is an arc-shaped surface, the feed pipe is equipped with a one-way liquid inlet valve, and the discharge pipe is equipped with a one-way liquid outlet valve.

[0013] Preferably, the funnel conduit is connected to the inner cavity of the electrolytic cell body.

[0014] Preferably, the inner drive shaft is fixedly connected to the inner motor output shaft of the integrated dual motor built into the auxiliary slot body, the vertical slot is connected to the arc slot, the end of the slider away from the positioning cavity is slidably connected to the slot connecting the arc slot and the vertical slot, and the wiping strip is provided with fiber bristles.

[0015] Compared with the prior art, the present invention provides a saline solution electrolysis device for sodium hypochlorite production, which has the following beneficial effects:

[0016] 1. Through the setting of the pH adjustment mechanism, a pH value monitoring device is installed in the electrolytic cell to monitor the internal pH value. When the pH value changes, the integrated controller controls the acidic or alkaline solution to be added into the funnel conduit, and then circulates into the electrolytic cell, so as to adjust the solution in the electrolytic cell to maintain a weak alkaline state. The pH value in the electrolytic cell is adjusted to a weak alkaline state through automatic monitoring and the use of multiple mechanisms. Under weak alkaline conditions, the stability of hypochlorite ions is relatively high, so the generation process of sodium hypochlorite is more stable, reducing the problem of unstable product quality caused by pH fluctuations, and maintaining a stable weak alkaline environment is more conducive to optimizing the electrolysis. The reaction rate and efficiency can be improved, thereby increasing the generation rate of sodium hypochlorite, making it less likely for this oxidation reaction to occur, significantly reducing the generation of by-products such as chlorate, and avoiding the reaction of hypochlorite ions with hydroxide ions to generate chlorate and oxygen under strong alkaline conditions, further avoiding the toxicity of chlorate causing damage to multiple organ systems of the human body, and weak alkaline conditions can better improve the purity of sodium hypochlorite and reduce the cost and difficulty of subsequent treatment of by-products. The reduction of by-products means that potential harm to the environment and human body can be reduced, as well as reducing equipment failures and production interruptions caused by pH imbalance, thereby improving production safety and reliability.

[0017] 2. Through the setting of the auxiliary cleaning mechanism, under the action of the internal and external dual motors built into the auxiliary tank, the internal motor is intermittently rotated and driven. With the coordinated use of multiple structures, the wiping strip is driven to reciprocate up and down, thereby cleaning the cathode and anode surfaces, avoiding the accumulation of sediments and impurities on the electrode surface as the use time increases, thereby hindering the effective contact between the electrode and the electrolyte, and reducing the reaction activity and conductivity of the electrode. The electrode surface is cleaned intermittently to remove sediments and impurities, while increasing the reaction rate and current density of the electrode, avoiding the increase in motor resistance and energy consumption in the electrolysis process after impurities cover the electrode, thereby improving energy utilization efficiency, ensuring the stable generation of sodium hypochlorite, better reducing the corrosion and damage of impurities to the cathode and anode, extending the service life of the electrode, and reducing the maintenance cost of the equipment.

[0018] 3. Through the setting of the spoiler paddle, the water flow generated by the rotating paddle can enhance the mass transfer process in the electrolyte, increase the material transfer rate, accelerate the reaction speed of ion migration and diffusion in the electrolysis reaction, and improve the generation efficiency of sodium hypochlorite. In addition, during the electrolysis process, the chloride ions in the electrolyte need to be in full contact with the electrode to undergo an oxidation reaction. The water flow generated by the rotating paddle can make the chloride ions diffuse to the electrode surface more quickly, promote the mixing of the electrolyte, and make the components in the electrolyte more evenly distributed, which is more conducive to improving the efficiency and uniformity of the electrolysis reaction and ensuring the stable quality of the generated sodium hypochlorite. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a diagram showing the internal structure of the placement tank of the present invention;

[0021] Figure 3 This is an internal structural diagram of the auxiliary tank of the present invention;

[0022] Figure 4 For the present invention Figure 3 The structure diagram at A is enlarged;

[0023] Figure 5 This is a structural diagram of the local auxiliary cleaning mechanism of the present invention;

[0024] Figure 6 This is a structural diagram of the auxiliary cleaning mechanism of the present invention;

[0025] Figure 7 For the present invention Figure 6 The structure diagram at B is enlarged;

[0026] Figure 8 This is a structural diagram of the auxiliary cleaning mechanism of the present invention.

[0027] In the figure:

[0028] 1. Generator; 11. Integrated controller; 12. Exhaust port; 13. Placement slot;

[0029] 2. pH adjustment mechanism; 21. electrolytic cell; 22. circulation pump; 23. cathode; 24. anode; 25. diaphragm plate; 26. auxiliary cell; 27. convex plate; 28. movable plug; 29. ​​storage tube; 210. feed tube; 211. discharge tube; 212. funnel guide tube; 213. positioning rod; 214. return spring;

[0030] 3. Auxiliary cleaning mechanism; 31. Inner driving shaft; 32. Arc groove; 33. Vertical groove; 34. Positioning cavity; 35. Sliding block; 36. Sliding rod; 37. Auxiliary spring; 38. Driving rod; 39. Wiping strip; 310. Spoiler paddle. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] The present invention is further described in detail below based on the accompanying drawings and embodiments.

[0033] Example

[0034] Please refer to Figures 1 to 4 As shown:

[0035] In order to solve the problems mentioned in the technical solution, the embodiment of the present application provides a salt solution electrolysis device for sodium hypochlorite production, including: a generator 1, an integrated controller 11 is provided on the generator 1, an exhaust port 12 is fixedly connected to one side of the generator 1, a placement slot 13 is provided on the generator 1, the placement slot 13 is located below the integrated controller 11, a pH adjustment mechanism 2 is provided in the placement slot 13, the pH adjustment mechanism 2 includes an electrolytic cell body 21, the electrolytic cell body 21 is fixedly connected in the placement slot 13, a cathode 23 is provided in the electrolytic cell body 21, a diaphragm plate 25 is provided on one side of the cathode 23, an anode 24 is provided on the side of the diaphragm plate 25 away from the cathode 23, a U-shaped groove is provided on the cathode 23, anode 24, and diaphragm plate 25, and an auxiliary cleaning mechanism 3 is provided below the pH adjustment mechanism 2;

[0036] The pH adjustment mechanism 2 is used to add acid or alkali according to the state of the electrolyte in the electrolytic cell body 21 to adjust the pH value and thereby reduce the production of by-products such as oxychlorides. The pH adjustment mechanism 2 also includes a circulation pump 22. The circulation pump 22 is mainly used to promote the circulation of the electrolyte in the electrolytic cell body 21 to evenly distribute the salt in the electrolyte and improve the electrolysis efficiency. The circulation pump 22 is fixedly connected to the electrolytic cell body 21. The electrolytic cell body 21 is equipped with a pH value monitoring device. An auxiliary cell body 26 is fixedly connected to the electrolytic cell body 21. The cathode 23, the anode 24, and the diaphragm plate 25 are all fixedly connected to the electrolytic cell body 21. An auxiliary cell body 26 is arranged on one side of the circulation pump 22. The auxiliary cell body 26 is fixedly connected to the electrolytic cell body 21. An end of the auxiliary cell body 26 away from the electrolytic cell body 21 is equipped with an integrated dual motor. , a convex plate 27 is rotatably connected in the auxiliary tank body 26, and the convex plate 27 is mainly used to contact the storage tube body 29 to move up and down when rotating, so as to control the acid-base solution to flow into the electrolytic tank body 21 to adjust the pH value of the electrolyte, the convex plate 27 is fixedly connected to the output shaft of the external motor of the integrated dual motor, and the convex block of the convex plate 27 is an arc-shaped surface, and a movable plug 28 is fixedly connected to the eccentric bottom of the inner cavity of the auxiliary tank body 26, and the outer ring of the movable plug 28 is provided with a storage tube body 29, and a feed pipe 210 is fixedly connected to the upper end of the storage tube body 29, and the feed pipe 210 is connected to an external acid-base solution storage device, and a one-way liquid inlet valve is built in the feed pipe 210, and a discharge pipe 211 is arranged below the feed pipe 210 and the discharge pipe 211 is fixedly connected to the storage tube body 29, and the discharge pipe 211 is built with a one-way liquid outlet valve;

[0037] The pH adjustment mechanism 2 also includes a funnel conduit 212, which is arranged on the side of the movable plug 28 away from the protrusion plate 27, and is fixedly connected to the bottom of the auxiliary tank body 26. The lower end of the funnel conduit 212 extends into the electrolytic tank body 21, and the funnel conduit 212 is connected to the inner cavity of the electrolytic tank body 21. A positioning rod 213 is slidably connected to the side of the movable plug 28 away from the funnel conduit 212. The positioning rod 213 is mainly used to assist the storage tube body 29 to perform vertical reciprocating motion. The positioning rod 213 is fixedly connected to the bottom of the inner cavity of the auxiliary tank body 26. A return spring 214 is fixedly connected to the lower end of the storage tube body 29, and one end of the return spring 214 away from the storage tube body 29 is fixedly connected to the auxiliary tank body 26;

[0038] For further examples, please refer to Figures 5 to 8 As shown:

[0039] The auxiliary cleaning mechanism 3 is used to clean the surfaces of the cathode 23 and the anode 24 to reduce the presence of surface deposits and impurities, thereby improving their performance and reducing the generation of side reactions. The auxiliary cleaning mechanism 3 includes an inner driving shaft 31, which is fixedly connected to the inner motor output shaft of the integrated dual motor built in the auxiliary tank body 26. The inner driving shaft 31 rotates and extends downward to penetrate the bottom of the auxiliary tank body 26. An arc groove 32 is provided on the outer ring of one end of the inner driving shaft 31 that penetrates the auxiliary tank body 26. A vertical groove 33 is provided on the inner driving shaft 31. The arc groove 32 cooperates with the vertical groove 33 to indirectly push the wiping strip 39 up and down through the reciprocating motion of the slider 35. The vertical groove 33 is connected to the arc groove 32. Positioning cavities 34 are provided on both sides of the inner driving shaft 31. The positioning cavities 34 are fixedly connected to the bottom of the auxiliary tank body 26. A slider 35 is slidably connected in the positioning cavity 34. The end of the slider 35 away from the positioning cavity 34 is slidably connected between the arc groove 32 and the vertical groove 33 connected, a slide bar 36 is fixedly connected to the bottom of the slider 35, the slide bar 36 extends downward and passes through the positioning cavity 34, an auxiliary spring 37 is sleeved on the outer ring of the slide bar 36, one end of the auxiliary spring 37 is fixedly connected to the slider 35, and the end of the auxiliary spring 37 away from the slider 35 is fixedly connected to the bottom of the positioning cavity 34, and the end of the slide bar 36 passing through the positioning cavity 34 is fixedly connected to a driving rod 38, and three groups of symmetrical rods are arranged on the driving rod 38, and the symmetrical rods on the driving rod 38 are respectively slidably connected to the U-shaped grooves opened on the cathode 23, the anode 24 and the diaphragm plate 25, and the symmetrical rods of the driving rod 38 are fixedly connected to wiping strips 39, and the wiping strips 39 are provided with fiber bristles. The wiping strips 39 are mainly used to clean the surfaces of the cathode 23 and the anode 24 during reciprocation, and the wiping strips 39 are two in a group and respectively fit the two sides of the cathode 23 and the anode 24, and the end of the inner driving shaft 31 away from the auxiliary groove body 26 is fixedly connected to a spoiler paddle 310;

[0040] Everything in the above example works like this:

[0041] In the initial state, the arc surface of the protruding plate 27 contacts the storage tube 29, and the storage tube 29 is not provided with an acidic or alkaline solution, and the return spring 214 is compressed;

[0042] The following is the working process of the pH adjustment mechanism 2 for adjusting the pH value by adding acid or alkali according to the state of the electrolyte in the electrolytic cell body 21 to reduce the generation of byproducts such as oxoacid salts:

[0043] When in use, the pH value monitoring device built into the electrolytic cell 21 detects changes in the pH value of the sodium hypochlorite solution in the electrolytic cell 21. Since the generation of sodium hypochlorite is relatively stable under weak alkaline conditions, while the generation of byproducts such as chlorate is relatively small, when the pH value of the solution changes, the solution status is fed back to the integrated controller 11, and then the integrated controller 11 controls the external motor of the integrated dual motor built into the auxiliary cell 26 to start, and the output shaft of the external motor drives the protrusion plate 27 to rotate. When the protrusion plate 27 rotates, the arc surface on the protrusion plate 27 gradually moves away from the storage tube body 29. When the arc surface is released from the storage tube body 29, due to the protrusion block setting on the bottom surface of the protrusion plate 27, a height difference is formed with its surroundings. Therefore, after the protrusion plate 27 is released from the storage tube body 29, the storage tube body 29 gradually rises under the restoring force of the reset spring 214, and the space formed by the storage tube body 29 and the movable plug 28 is expanded, and the internal air pressure is reduced, and then the storage tube body 29 is released through the single block in the feed pipe 210. The inlet valve controls the external acidic or alkaline solution to enter the storage tube body 29. Under the continuous rotation of the protruding plate 27, after one circle, when it returns to the upper end of the storage tube body 29, the protruding plate 27 gradually contacts the storage tube body 29, pushing the storage tube body 29 downward. As a result, during the downward movement of the storage tube body 29, the space formed between the storage tube body 29 and the movable plug 28 is reduced, and the internal air pressure increases. Therefore, according to the pH value monitoring device installed in the electrolytic cell body 21, the acidity of the internal solution is fed back. Alkaline state, thereby controlling the feed pipe 210 to connect to the external acidic and alkaline solutions to flow into the feed pipe 210, and then when the internal air pressure rises, the acidic or alkaline solution in the feed pipe 210 flows into the storage tube body 29, and then squeezes the acidic or alkaline solution in the storage tube body 29 to flow out through the one-way liquid outlet valve in the discharge pipe 211, and then the solution flows into the funnel conduit 212 through the discharge pipe 211, and the funnel conduit 212 is connected with the inner cavity of the electrolytic cell body 21, so as to adjust the internal pH value;

[0044] By setting the pH adjustment mechanism 2, a pH value monitoring device is installed in the electrolytic cell body 21 to monitor the internal pH value. When the pH value changes, the integrated controller 11 controls the acidic or alkaline solution to be added into the funnel conduit 212, and then circulates into the electrolytic cell body 21, so as to adjust the solution in the electrolytic cell body 21 to maintain a weak alkaline state. The pH value in the electrolytic cell body 21 is adjusted to a weak alkaline state through automatic monitoring and the coordinated use of multiple mechanisms. Under weak alkaline conditions, the stability of hypochlorite ions is relatively high, so the generation process of sodium hypochlorite is more stable, reducing the problem of unstable product quality caused by pH fluctuations, and maintaining a stable weak alkaline environment is more effective. It is beneficial to optimize the rate and efficiency of the electrolytic reaction, thereby increasing the generation rate of sodium hypochlorite, making it less likely for this oxidation reaction to occur, significantly reducing the generation of by-products such as chlorate, and avoiding the reaction of hypochlorite ions with hydroxide ions to generate chlorate and oxygen under strong alkaline conditions, further avoiding the toxicity of chlorate from causing damage to multiple organ systems of the human body. In addition, weak alkaline conditions can better improve the purity of sodium hypochlorite and reduce the cost and difficulty of subsequent treatment of by-products. The reduction of by-products means that potential harm to the environment and human body can be reduced, as well as reducing equipment failures and production interruptions caused by pH imbalance, thereby improving production safety and reliability.

[0045] Please refer to the above working process Figures 1 to 4 .

[0046] The following is the working process of the auxiliary cleaning mechanism 3 for cleaning the surfaces of the cathode 23 and the anode 24 to reduce the presence of surface deposits and impurities, thereby improving their performance and reducing the generation of side reactions:

[0047] When in use, after the acid-base solution in the funnel conduit 212 flows into the electrolytic cell body 21, the inner driving shaft 31 is driven by the inner motor in the integrated dual motor built into the auxiliary cell body 26 to rotate clockwise, and then under the clockwise rotation, the reverse spiral setting of the arc groove 32 opened on the inner driving shaft 31 causes the sliders 35 on both sides to slide on the arc groove 32 and move downward along the arc groove 32 when the arc groove 32 rotates clockwise with the inner driving shaft 31. When the slider 35 moves downward, it pushes the slide bar 36 to slide downward in the positioning cavity 34 synchronously, and then causes the auxiliary spring 37 to be compressed. In the process of the slide bar 36 moving downward, the driving rod 38 connected to the slide bar 36 moves downward synchronously, and During the downward movement of the rod 38, the wiping strip 39 on the driving rod 38 is driven to move downward synchronously. During the downward movement, the surfaces of the cathode 23 and the anode 24 are cleaned to prevent the accumulation of sediments and impurities. Furthermore, when the inner driving shaft 31 rotates continuously, the arc groove 32 rotates synchronously therewith. When the slider 35 slides to the bottom of the arc groove 32, the vertical groove 33 is connected to the arc groove 32, and under the cooperation of the restoring force of the auxiliary spring 37, the slider 35 moves from the bottom of the vertical groove 33 to the top of the vertical groove 33, and then continues to slide into the arc groove 32, thereby forming an up and down reciprocating movement, indirectly controlling the wiping strip 39 to move up and down on the cathode 23 and the anode 24, and cleaning both sides of the cathode 23 and the anode 24.

[0048] Furthermore, under the setting of two groups of positioning cavities 34, the curvature of the arc groove 32 controls the sliders 35 on both sides to reciprocate intermittently, dividing the cathode 23 and the anode 24 into two parts for cleaning, disturbing the flow direction of the internal solution, and then while the inner drive shaft 31 is driven clockwise, the rotation of the inner drive shaft 31 drives the spoiler paddle 310 to rotate synchronously, so that under the rotation, the flow direction of the internal solution is better disturbed, the reactants of the electrolytic solution are further stirred and mixed, the contact efficiency of chlorine and hydroxide ions is improved, the local concentration is avoided to be too high or too low, the formation of sodium hypochlorite is promoted, the uniformity and stability of the reaction are improved, and the occurrence of side reactions is reduced.

[0049] By setting the auxiliary cleaning mechanism 3, under the action of the internal and external dual motors built into the auxiliary tank body 26, the internal motor is intermittently rotated and driven, and with the coordinated use of multiple structures, the wiping strip 39 is driven to reciprocate up and down, so as to clean the cathode 23 and the anode 24 surfaces, and avoid the accumulation of sediments and impurities on the electrode surface with the increase of use time, thereby hindering the effective contact between the electrode and the electrolyte, reducing the reaction activity and conductivity of the electrode. The electrode surface is intermittently cleaned to remove sediments and impurities, while increasing the reaction rate and current density of the electrode, avoiding the situation where the resistance of the motor increases and the energy consumption of the electrolysis process increases after the impurities cover the electrode, thereby improving energy utilization efficiency, ensuring the stable generation of sodium hypochlorite, better reducing the corrosion and damage of the cathode 23 and the anode 24 caused by impurities, extending the service life of the electrode, and reducing the maintenance cost of the equipment.

[0050] Furthermore, the spoiler paddle 310 is arranged to rotate synchronously with the cleaning operation. The water flow generated by the rotating paddle can enhance the mass transfer process in the electrolyte, increase the material transfer rate, accelerate the reaction speed of ion migration and diffusion in the electrolysis reaction, and improve the generation efficiency of sodium hypochlorite. In addition, during the electrolysis process, the chloride ions in the electrolyte need to fully contact with the electrode to undergo an oxidation reaction. The water flow generated by the rotating paddle can make the chloride ions diffuse to the electrode surface more quickly, promote the mixing of the electrolyte, and make the components in the electrolyte more evenly distributed, which is more conducive to improving the efficiency and uniformity of the electrolysis reaction and ensuring the stable quality of the generated sodium hypochlorite.

[0051] Please refer to the above working process Figures 5 to 8 .

[0052] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A saline solution electrolysis device for sodium hypochlorite production, comprising: A generator (1), wherein an integrated controller (11) is provided on the generator (1), an exhaust port (12) is fixedly connected to one side of the generator (1), a placement slot (13) is provided on the generator (1), and the placement slot (13) is located below the integrated controller (11), and is characterized in that a pH adjustment mechanism (2) is provided in the placement slot (13), and the pH adjustment mechanism (2) comprises an electrolytic cell body (21), the electrolytic cell body (21) is fixedly connected to the placement slot (13), a cathode (23) is provided in the electrolytic cell body (21), a diaphragm plate (25) is provided on one side of the cathode (23), an anode (24) is provided on the side of the diaphragm plate (25) away from the cathode (23), a U-shaped slot is provided on the cathode (23), the anode (24) and the diaphragm plate (25), and an auxiliary cleaning mechanism (3) is provided below the pH adjustment mechanism (2); The pH adjustment mechanism (2) is used to adjust the pH value by adding acid or alkali according to the state of the electrolyte in the electrolytic cell (21), thereby reducing the generation of byproducts such as oxoacid salts during the electrolysis process; The auxiliary cleaning mechanism (3) is used to clean the surfaces of the cathode (23) and the anode (24) to reduce the presence of surface deposits and impurities, thereby improving their performance and reducing the generation of side reactions.

2. The saline solution electrolysis equipment for sodium hypochlorite production according to claim 1, characterized in that: The pH adjustment mechanism (2) further comprises a circulation pump (22), the circulation pump (22) being fixedly connected to the electrolytic cell body (21), the electrolytic cell body (21) being fixedly connected to an auxiliary cell body (26), the cathode (23), the anode (24), and the diaphragm plate (25) being fixedly connected in the electrolytic cell body (21), the auxiliary cell body (26) being arranged on one side of the circulation pump (22), and the auxiliary cell body (26) being fixedly connected to the electrolytic cell body (21), a protrusion plate (27) is rotatably connected inside the auxiliary groove body (26), a movable plug (28) is fixedly connected at an eccentric position at the bottom of the inner cavity of the auxiliary groove body (26), a storage tube body (29) is provided on the outer ring of the movable plug (28), a feed pipe (210) is fixedly connected to the upper end of the storage tube body (29), a discharge pipe (211) is provided below the feed pipe (210) and the discharge pipe (211) is fixedly connected to the storage tube body (29).

3. A saline solution electrolysis equipment for sodium hypochlorite production according to claim 2, characterized in that: The pH adjustment mechanism (2) further comprises a funnel conduit (212), wherein the funnel conduit (212) is arranged on a side of the movable plug (28) away from the protruding plate (27), the funnel conduit (212) is fixedly connected to the bottom of the auxiliary tank body (26), the lower end of the funnel conduit (212) extends into the electrolytic tank body (21), the side of the movable plug (28) away from the funnel conduit (212) is slidably connected to a positioning rod (213), the positioning rod (213) is fixedly connected to the bottom of the inner cavity of the auxiliary tank body (26), the lower end of the storage tube body (29) is fixedly connected to a return spring (214), and the end of the return spring (214) away from the storage tube body (29) is fixedly connected to the auxiliary tank body (26).

4. The saline solution electrolysis equipment for sodium hypochlorite production according to claim 1, characterized in that: The auxiliary cleaning mechanism (3) comprises an inner driving shaft (31), the inner driving shaft (31) rotates and extends downward to pass through the bottom of the auxiliary groove body (26), an arc groove (32) is provided on the outer ring of one end of the inner driving shaft (31) passing through the auxiliary groove body (26), a vertical groove (33) is provided on the inner driving shaft (31), positioning cavities (34) are provided on both sides of the inner driving shaft (31), the positioning cavities (34) are fixedly connected to the bottom of the auxiliary groove body (26), a slider (35) is slidably connected in the positioning cavity (34), a sliding rod (36) is fixedly connected to the bottom of the sliding rod (35), the sliding rod (36) extends downward to pass through the positioning cavity (34), the outer ring of the sliding rod (36) is sleeved with an auxiliary spring (37), the auxiliary spring (37) one end is fixedly connected to the slider (35), the end of the auxiliary spring (37) away from the slider (35) is fixedly connected to the bottom of the positioning cavity (34), the end of the slide rod (36) passing through the positioning cavity (34) is fixedly connected to a driving rod (38), and three groups of symmetrical rods are arranged on the driving rod (38), and the symmetrical rods on the driving rod (38) are respectively slidably connected to the U-shaped grooves opened on the cathode (23), the anode (24), and the diaphragm plate (25), and the symmetrical rods of the driving rod (38) are fixedly connected to wiping strips (39), and the wiping strips (39) are grouped in two and respectively fit with the two surfaces of the cathode (23) and the anode (24), and the end of the inner driving shaft (31) away from the auxiliary groove body (26) is fixedly connected to a spoiler paddle (310).

5. The saline solution electrolysis equipment for sodium hypochlorite production according to claim 2, characterized in that: The electrolytic cell body (21) is equipped with a pH value monitoring device, an integrated dual motor is built into one end of the auxiliary cell body (26) away from the electrolytic cell body (21), the protrusion plate (27) is fixedly connected to the output shaft of the outer motor of the integrated dual motor, the protrusion of the protrusion plate (27) is an arc-shaped surface, the feed pipe (210) is equipped with a one-way liquid inlet valve, and the discharge pipe (211) is equipped with a one-way liquid outlet valve.

6. The saline solution electrolysis equipment for sodium hypochlorite production according to claim 3, characterized in that: The funnel conduit (212) is in communication with the inner cavity of the electrolytic cell body (21).

7. The saline solution electrolysis equipment for sodium hypochlorite production according to claim 4, characterized in that: The inner drive shaft (31) is fixedly connected to the inner motor output shaft of the integrated dual motor built into the auxiliary slot body (26); the vertical slot (33) is connected to the arc slot (32); one end of the slider (35) away from the positioning cavity (34) is slidably connected to the slot connecting the arc slot (32) and the vertical slot (33); and the wiping strip (39) is provided with fiber bristles.

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