CN212223116U - Electrolytic sodium hypochlorite generator - Google Patents
Electrolytic sodium hypochlorite generator Download PDFInfo
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- CN212223116U CN212223116U CN202020885092.7U CN202020885092U CN212223116U CN 212223116 U CN212223116 U CN 212223116U CN 202020885092 U CN202020885092 U CN 202020885092U CN 212223116 U CN212223116 U CN 212223116U
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Abstract
The utility model discloses an electrolytic sodium hypochlorite generator, which comprises a salt dissolving unit, a security filter, a lift pump, a multi-stage electrooxidation unit and a sodium hypochlorite storage barrel which are arranged in sequence, wherein the salt dissolving unit comprises a mixing barrel and a sodium chloride dosing device; the multistage electrooxidation unit comprises a multistage electrolytic cell or a one-stage electrolytic cell with the same structure, a water inlet and a water outlet which are communicated with the inside of the electrolytic cell are arranged on the electrolytic cell, a cathode and an anode are arranged in the electrolytic cell, wherein the anode is a nano polycrystalline titanium catalysis electrode, the cathode is a titanium mesh electrode, the water inlet is connected with the pump outlet end of the lift pump, and the water outlet is connected with the water inlet of the next-stage electrolytic cell or a sodium hypochlorite storage barrel. Through the electrooxidation of the two-stage electrolytic bath, the production of the sodium hypochlorite disinfectant and the pickling-free of equipment are realized, meanwhile, the production efficiency is greatly improved, the production cost and the operation cost are reduced, the service life of production equipment is prolonged, and the device has great economic value.
Description
Technical Field
The utility model relates to a disinfectant production facility technique, concretely relates to electrolysis hypochlorite generator.
Background
The main chemical substance of the sodium hypochlorite disinfectant is sodium hypochlorite, the sodium hypochlorite is mainly generated by adopting an electrooxidation method at present, namely, the structure of an electrolytic cell is adopted, the existing electrolytic cell mainly comprises a cathode, an anode and a neutral pole, and a cathode chamber communicated with water and an anode chamber of electrolyte are arranged on one side of each of the cathode and the anode, so that the defects of complex structure, large volume, poor operation stability and the like exist, and the normal production efficiency of the sodium hypochlorite is greatly influenced, namely, the production efficiency of the sodium hypochlorite disinfectant is influenced.
In the sodium hypochlorite generator in the prior art, the process that sodium chloride enters the oxidation barrel after being added with medicine is accompanied with impurity generation, so that oxidation and the quality of sodium hypochlorite are influenced.
Disclosure of Invention
In order to solve the problem, the utility model provides an electrolysis sodium hypochlorite generator to improve sodium hypochlorite disinfectant's production efficiency, reduction in production cost and running cost simultaneously.
In order to achieve the above purpose, the utility model discloses technical scheme as follows:
the utility model provides an electrolysis sodium hypochlorite generator, includes dissolves the salt unit, will dissolve the elevator pump of the sodium chloride solution transportation that produces in the salt unit and carry out the electrolysis trough of oxidation with the sodium chloride solution to and the sodium hypochlorite storage bucket that stores will obtain, be provided with the security filter between salt unit and the elevator pump.
By adopting the scheme, the security filter is arranged to filter out some impurities in the solution, so that the normal operation of the equipment is facilitated, and the service life of the equipment is prolonged; and then, the nano polycrystalline titanium catalytic electrode and the titanium mesh electrode are respectively used as an anode and a cathode to carry out electrooxidation reaction, so that the nano polycrystalline titanium catalytic electrode has the advantages of good chemical stability, strong corrosion resistance, low working voltage, low energy consumption and greatly reduced operation cost.
Preferably, the method comprises the following steps: the electrolytic cell comprises an end wall and flanges used for sealing two ends of the end wall, a water inlet and a water outlet which are communicated with the interior of the electrolytic cell are arranged on the electrolytic cell, a cathode and an anode are arranged in the electrolytic cell, the water inlet is connected with the outlet end of the lift pump, and the water outlet is connected with the sodium hypochlorite storage barrel.
By adopting the scheme, the cathode and the anode form electrode oxidation in the electrolytic cell, and the sodium chloride solution enters from the water inlet and flows out from the water outlet to complete oxidation work to form sodium hypochlorite solution.
Preferably, the method comprises the following steps: the anode is a nano polycrystalline titanium catalytic electrode, the cathode is a titanium mesh electrode, the electrolytic bath is connected with a high-frequency direct-current power supply, the anode of the high-frequency direct-current power supply is connected with the nano polycrystalline titanium catalytic electrode, and the cathode of the high-frequency direct-current power supply is connected with the titanium mesh electrode.
By adopting the scheme, the power supply between the two electrodes is realized through the electrolytic power supply, and the electrooxidation is realized.
Preferably, the method comprises the following steps: the titanium net electrode and the nano polycrystalline titanium catalysis electrode are arranged along the length direction of the electrolytic bath, the nano polycrystalline titanium catalysis electrode comprises a hollow pipe with a hollow structure and titanium pipes arranged at two ends of the hollow pipe, wherein the titanium pipe close to one end of the water storage area is of a hollow structure with an open end and stretches to the outside of the electrolytic bath, an open end of the titanium pipe forms a water inlet hole, the titanium pipe at the other end is of a solid structure, water permeable holes communicated with the inside of the titanium pipe are uniformly distributed in the surface of the hollow pipe, and the aperture of each water permeable hole is 10-20 microns.
By adopting the scheme, the three-dimensional electrode is formed by utilizing the limber holes on the surface of the ceramic, the effective contact area is increased, the treatment efficiency is favorably improved, the aperture of 10-20 mu m is selected as the optimal aperture of the limber holes, the water is not easy to pass when the aperture is smaller than 10-20 mu m, and the effective contact area is reduced when the gap is too large, so that the treatment efficiency is reduced.
Preferably, the method comprises the following steps: the titanium mesh electrode comprises a titanium mesh and a stainless steel screw arranged at one end of the titanium mesh, a plurality of circular holes are uniformly distributed in the titanium mesh, and the nano polycrystalline titanium catalytic electrode is positioned in the titanium mesh.
Scheme more than adopting, effective area of contact can further be increased through the circular port to improve the electrooxidation efficiency.
Preferably, the method comprises the following steps: the nanometer polycrystalline titanium catalytic electrode is arranged along the central axis of the titanium mesh, and the gap between the surface of the nanometer polycrystalline titanium catalytic electrode and the inner wall of the titanium mesh electrode is 2 cm.
By adopting the scheme, because the distance between the surface of the nano polycrystalline titanium catalytic electrode and the inner wall of the titanium-based titanium mesh is 2cm, the electrode is easy to generate heat when the distance is too small, equipment can be burnt seriously, and when the distance is too large, the resistance formed by water is relatively increased, so that the energy consumption is increased, the service life is prolonged, and the use cost is reduced.
Preferably, the method comprises the following steps: a plurality of gaskets are arranged between the titanium mesh electrode and the nano polycrystalline titanium catalytic electrode, the gaskets are annular pieces made of insulating materials, and the gaskets are distributed along the length direction of the electrolytic bath.
By adopting the scheme, the unequal intervals among the electrodes caused by shaking can be prevented, the stability between the cathode and the electrodes is improved, and the reliability of the treatment effect is improved.
Preferably, the method comprises the following steps: the electrolytic cell is also provided with an evacuation port and an exhaust port.
By adopting the scheme, the emptying port is arranged for regularly discharging sediments in the electrolytic cell, so that the normal operation of equipment is facilitated; the vent is arranged because hydrogen is generated in the reaction process, and the hydrogen is explosive and needs to be discharged.
Preferably, the method comprises the following steps: the electrolytic cell is characterized by also comprising a high-frequency direct-current power supply and a control system for supplying power to the electrolytic cell, wherein the control system consists of a sensor, an instrument and an actuating mechanism, and a manual control and automatic control mode change-over switch is arranged on a panel of the control cabinet.
By adopting the scheme, a Programmable Logic Controller (PLC) can be adopted for centralized control, operation parameter control, equipment switching control such as a water pump and the like, system self-diagnosis and alarm protection are completed according to the process flow program of the device, and automatic monitoring and long-term safe operation of all equipment under an unattended working condition are ensured.
Preferably, the method comprises the following steps: a stirrer is arranged on the mixing barrel.
By adopting the scheme, the sodium chloride can be dissolved more fully, and the using amount of the sodium chloride is reduced, so that the production cost is reduced.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the filtration of impurities in the oxidation process is realized through the security filter, so that the normal operation of equipment is facilitated, and the service life of the equipment is prolonged;
2. by means of the electrooxidation effect of the electrolytic cell, the production of the sodium hypochlorite disinfectant is realized by taking a special electrolytic cell structure, a nano polycrystalline titanium catalytic electrode as an anode and a titanium mesh electrode as a cathode, so that the production efficiency is greatly improved, the production cost is reduced, the service life of production equipment is prolonged, and the production method has great economic value;
3. the number of stages of the electrolytic cell can be increased at any time according to the required amount of the sodium hypochlorite disinfectant, so that the standardization of equipment is facilitated;
4. through the arrangement of the water permeable holes on the electrode, water flow and gas are flushed in the normal running process, and scaling is avoided, so that backwashing and acid washing are not needed, and the running cost is reduced;
5. the utility model discloses set up the PLC the control unit, each unit behavior of accessible backstage real-time supervision to make corresponding measure, be favorable to improving the degree of automation and the security of production line.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment;
FIG. 2 is a schematic view of a connection structure of an electrolytic bath and a high-frequency DC power supply;
FIG. 3 is a schematic view of a primary electrolytic cell structure;
FIG. 4 is a schematic structural diagram of a nano polycrystalline titanium catalytic electrode;
FIG. 5 is a left side view of the primary electrolytic cell;
FIG. 6 is a right side view of the primary electrolytic cell;
FIG. 7 is a sectional view taken along line A-A of FIG. 6;
fig. 8 is a schematic structural diagram of a titanium mesh electrode.
1. A salt dissolving unit; 10. a mixing barrel; 11. a sodium chloride dosing device; 12. a blender; 2. a cartridge filter; 3. a lift pump; 4. a sodium hypochlorite storage barrel; 5. an electrolytic cell; 50. a water inlet; 51. a water outlet; 52. emptying the air; 53. an exhaust port; 54. a gasket; 55. an end wall; 56. a flange; 6. a nano polycrystalline titanium catalytic electrode; 61. a titanium tube; 62. a hollow tube; 7. a titanium mesh electrode; 71. a titanium mesh; 72. stainless steel screws; 8. a high frequency DC power supply.
Detailed Description
The present invention will be further described with reference to the following examples and accompanying drawings.
Example (b): referring to fig. 1, an electrolytic sodium hypochlorite generator mainly includes a salt dissolving unit 1, a security filter 2 communicated with an output end of the salt dissolving unit 1, a lift pump 3 communicated with an output end of the security filter 2, a multi-stage electrooxidation unit communicated with an output end of the lift pump, and a sodium hypochlorite storage barrel 4 communicated with the multi-stage electrooxidation unit, wherein the salt dissolving unit 1 includes a mixing barrel 10 and a sodium chloride adding device 11, tap water is added into the mixing barrel 10, the sodium chloride adding device 11 is used for quantitatively adding sodium chloride into the mixing barrel 10 to form a sodium chloride solution, in this embodiment, the sodium chloride is sufficiently dissolved, so that a stirrer 12 is arranged in the mixing barrel 10, and when the sodium chloride is added, the sodium chloride can be sufficiently dissolved through the stirrer 12, thereby reducing the amount of the sodium chloride and reducing the production cost. The dissolved sodium chloride solution is filtered by a cartridge filter to remove impurities in the solution and then enters the next reaction, thereby being beneficial to the normal operation of equipment and prolonging the service life of the equipment.
With continued reference to fig. 1, the multi-stage electro-oxidation unit includes a plurality of stages or a single-stage electrolytic cell 5 with a hollow structure, and the embodiment is described as a single-stage electrolytic cell.
Referring to fig. 2 and 3, the electrolytic cell 5 is substantially hollow cylindrical structure, and is composed of an end wall 55 and flanges 56 at both ends, wherein a water outlet 51 and an air outlet 53 are provided at the upper part of the end wall 55, and an evacuation opening 52 is provided at the lower part of the end wall 55.
With continued reference to fig. 2 and 3, the electrolytic cell 5 has a set of cathode and anode arranged along the length direction, the cathode is a titanium mesh electrode 7, and the anode is a nano polycrystalline titanium catalytic electrode 6. The electrolytic bath 5 is connected with a high-frequency direct current power supply 8, the anode of the high-frequency direct current power supply 8 is connected with the anode, and the cathode of the high-frequency direct current power supply 8 is connected with the cathode.
Referring to fig. 4, 5 and 6, the nano-polycrystalline titanium catalytic electrode 6 comprises a hollow tube 62 having a hollow cylindrical structure, titanium tubes 61 are disposed at two ends of the hollow tube 62, external threads are formed on the titanium tubes 61 at the two ends, the titanium tube 61 at the right end (the left and right in the context are referred to as figures) is a hollow structure with an open end, the left side of the titanium pipe 61 is communicated with the interior of the hollow pipe 62, the open end on the right side forms a water inlet 50 and penetrates through a right end flange 56 of the electrolytic bath 5 to be fixed by a nut, the titanium pipe 61 at the left end of the hollow pipe 62 is of a solid columnar structure, the titanium pipe 61 at the end penetrates through the left end flange 56 of the electrolytic bath 5 and then is fixed by a nut, thereby realizing the fixed installation of the nano polycrystalline titanium catalytic electrode 6, and the titanium pipe 61 and the two ends of the electrolytic bath 5 are insulated, so the end wall 55 can be made of hard plastic, which is beneficial to reducing the cost, and the connecting position adopts corresponding sealing measures.
With continuing reference to figures 4, 5 and 6, water permeable holes communicated with the interior of the hollow tube 62 are uniformly distributed on the surface of the hollow tube 62, the dissolved medicine firstly enters the hollow tube 62 through the water inlet 50 and then enters the electrolytic bath 5 through the water permeable holes, a three-dimensional electrode is formed by utilizing the water permeable holes, the contact area of the water in the electrooxidation process is greatly increased, thereby being beneficial to improving the production efficiency, the pore diameter of the permeable pores is preferably 10-20 μm in the application, the surface tension of water and the reaction contact area are mainly considered comprehensively, when the pore diameter is less than 10-20 μm, because of the tension effect, water is not easy to enter the electrolytic tank 5 through the permeable holes, thereby affecting the reaction rate, when the pore diameter is too large, the effective contact area is reduced, the reaction efficiency is also reduced, and the pore diameter of 10-20 mu m is large enough to allow water to pass through the water permeable pores.
Referring to fig. 7 and 8, in the embodiment, the titanium mesh electrode 7 mainly includes a titanium mesh 71 and a stainless steel screw 72 disposed at one end of the titanium mesh 71, the stainless steel screw 72 at the left end of the titanium mesh electrode 7 penetrates through the left end flange 56 of the electrolytic bath 5 and is then fixed by a nut, in order to improve the stability between the cathode and the anode, a plurality of gaskets 54 are disposed between the titanium mesh electrode 7 and the nano polycrystalline titanium catalytic electrode 6, the gaskets 54 are annular members made of an insulating material, the plurality of gaskets 54 are distributed along the length direction of the electrolytic bath 5 to prevent the unequal intervals between the electrodes due to shaking, so as to improve the reliability of the treatment effect, so that the titanium mesh electrode 7 is fixed inside the electrolytic bath 5 by the left end stainless steel screw 72 and the gaskets 54, and there is no direct contact between the titanium mesh electrode 7 and the nano polycrystalline titanium catalytic electrode 6.
The titanium mesh 71 is substantially in a hollow columnar structure, a plurality of circular holes are uniformly distributed on the side wall of the titanium mesh 71, so that the contact area is further increased, the reaction efficiency is improved, meanwhile, the titanium mesh electrode 7 and the nano polycrystalline titanium catalysis electrode 6 are coaxially arranged, namely, the nano polycrystalline titanium catalysis electrode 6 is positioned in the titanium mesh electrode 7, and the distance between the titanium mesh electrode and the nano polycrystalline titanium catalysis electrode is preferably 2cm in comprehensive consideration of the working state.
The pump-in end of the lift pump 3 is connected with the water outlet 51 of the cartridge filter 2, the pump-out end of the lift pump is connected with the water inlet 50, the sodium chloride solution in the mixing barrel 10 can be sent into the electrolytic tank 5, and the water inlet 50 of the next-stage electrolytic tank 5 of the water outlet 51 or the sodium hypochlorite storage barrel 4 is connected.
In order to further improve the production efficiency, the power supply 8 of the high-frequency direct current power supply 8 is configured for the electrolytic cell 5 in the embodiment, and can provide power for the electrolytic cell 5, and is connected with the positive electrode and the negative electrode of the high-frequency direct current power supply 8 through the titanium tube 61 and the stainless steel screw 72, in the actual connection process, the titanium tube 61 is connected with the "+" of the corresponding high-frequency direct current power supply 8, and the stainless steel screw 72 is connected with the "-" of the high-frequency direct current power supply 8.
The embodiment also comprises a PLC control unit which is connected with the salt dissolving unit 1, the security filter 2, the lifting pump 3 and the multistage electro-oxidation unit, the working conditions of all units can be monitored in real time through a background, corresponding measures are taken, and the automation degree and the safety of the production line are improved.
The biggest characteristic of the application is that the equipment is free from acid washing, because the electrodes are porous, water flow and gas are washed in the normal running process, scaling can not occur, back washing and acid washing are not needed, and the running cost is reduced.
Referring to fig. 1 to 8, the electrolytic sodium hypochlorite generator of the present application operates by first adding tap water into a mixing tub 10, and at the same time, adding a proper amount of sodium chloride into the mixing tub 10 through a sodium chloride adding device 11, and sufficiently dissolving the sodium chloride through a stirrer 12.
The sodium chloride solution after dissolving filters some impurity in the solution through cartridge filter 2, then passes through the elevator pump 3 with sodium chloride solution through water inlet 50 pump in into hollow tube 62, again through the hole of permeating water entering electrolysis trough 5, simultaneously through high frequency DC power supply 8 to its internal negative and positive electrode input current be 50A's direct current (the electric current is adjustable, operating voltage 4.5V), makes it take place the electrooxidation reaction in electrolysis trough 5:
NaCl+H2O=NaClO+H2。
the solution in electrolytic bath 5 for electro-oxidation reaction enters sodium hypochlorite storage barrel 4.
The above reactions can be completed through the PLC control unit, so that the reaction time can be saved, the production automation can be realized, and the safety is better.
Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and the scope of the present invention.
Claims (10)
1. The utility model provides an electrolysis sodium hypochlorite generator, includes salt dissolving unit (1), will dissolve elevator pump (3) of the sodium chloride solution transportation that produces in salt dissolving unit (1) and electrolytic cell (5) that carry out the oxidation with the sodium chloride solution to and carry out sodium hypochlorite storage bucket (4) of storing with the sodium hypochlorite that obtains, its characterized in that: a security filter (2) is arranged between the salt dissolving unit (1) and the lift pump (3).
2. The electrolytic sodium hypochlorite generator of claim 1, wherein: the electrolytic tank (5) comprises an end wall (55) and flanges (56) used for sealing two ends of the end wall (55), a water inlet (50) and a water outlet (51) which are communicated with the inside of the electrolytic tank (5) are formed in the electrolytic tank (5), a cathode and an anode are arranged in the electrolytic tank (5), the water inlet (50) is connected with the pump outlet end of the lift pump (3), and the water outlet (51) is connected with the sodium hypochlorite storage barrel (4).
3. Electrolytic sodium hypochlorite generator according to claim 2, characterized in that: the anode is a nano polycrystalline titanium catalytic electrode (6), the cathode is a titanium mesh electrode (7), the electrolytic bath (5) is connected with a high-frequency direct-current power supply (8), the anode of the high-frequency direct-current power supply (8) is connected with the nano polycrystalline titanium catalytic electrode (6), and the cathode of the high-frequency direct-current power supply (8) is connected with the titanium mesh electrode (7).
4. An electrolytic sodium hypochlorite generator as claimed in claim 3, wherein: titanium net electrode (7) and nanometer polycrystal titanium catalysis electrode (6) all set up along the length direction of electrolysis trough (5), nanometer polycrystal titanium catalysis electrode (6) are including hollow tube (62) that are hollow structure and set up titanium pipe (61) at hollow tube (62) both ends, and wherein titanium pipe (61) that are close to water storage district one end are the open hollow structure of tip to stretching the outside of electrolysis trough (5), and its opening end forms the inlet opening, and titanium pipe (61) of the other end are solid construction, the surface evenly distributed of hollow tube (62) has the hole of permeating water rather than inside intercommunication, the aperture of the hole of permeating water is 10-20 mu m.
5. An electrolytic sodium hypochlorite generator as claimed in claim 3, wherein: the titanium mesh electrode (7) comprises a titanium mesh (71) and a stainless steel screw (72) arranged at one end of the titanium mesh (71), a plurality of circular holes are uniformly distributed in the titanium mesh (71), and the nano polycrystalline titanium catalytic electrode (6) is positioned in the titanium mesh (71).
6. Electrolytic sodium hypochlorite generator according to claim 5, characterized in that: the nanometer polycrystalline titanium catalytic electrode (6) is arranged along the central axis of the titanium mesh (71), and the gap between the surface of the nanometer polycrystalline titanium catalytic electrode (6) and the inner wall of the titanium mesh electrode (7) is 2 cm.
7. An electrolytic sodium hypochlorite generator as claimed in claim 3, wherein: a plurality of gaskets (54) are arranged between the titanium mesh electrode (7) and the nano polycrystalline titanium catalytic electrode (6), the gaskets (54) are annular pieces made of insulating materials, and the gaskets (54) are distributed along the length direction of the electrolytic tank (5).
8. Electrolytic sodium hypochlorite generator according to claim 2, characterized in that: the electrolytic tank (5) is also provided with an evacuation port (52) and an exhaust port (53).
9. Electrolytic sodium hypochlorite generator according to claim 2, characterized in that: the electrolytic cell is characterized by further comprising a high-frequency direct-current power supply (8) and a control system, wherein the high-frequency direct-current power supply is used for supplying power to the electrolytic cell (5), the control system is composed of a sensor, an instrument and an execution mechanism, and a manual control and automatic control mode change-over switch is arranged on a panel of the control cabinet.
10. The electrolytic sodium hypochlorite generator of claim 1, wherein: a stirrer (12) is arranged in the salt dissolving unit (1).
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CN202020885092.7U CN212223116U (en) | 2020-05-22 | 2020-05-22 | Electrolytic sodium hypochlorite generator |
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CN202020885092.7U CN212223116U (en) | 2020-05-22 | 2020-05-22 | Electrolytic sodium hypochlorite generator |
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