CN212335313U - Device for preparing hypochlorous acid water - Google Patents
Device for preparing hypochlorous acid water Download PDFInfo
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- CN212335313U CN212335313U CN202020727246.XU CN202020727246U CN212335313U CN 212335313 U CN212335313 U CN 212335313U CN 202020727246 U CN202020727246 U CN 202020727246U CN 212335313 U CN212335313 U CN 212335313U
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Abstract
The utility model relates to a system gets hypochlorous acid water device belongs to water electrolysis technical field. The device comprises a container, a cathode electrode, an anode electrode and a direct-current power supply, wherein the bottom of the container is provided with a contracted inlet and outlet device opening, the outer wall of the device opening is provided with a screw cap in threaded connection, the anode electrode and the cathode electrode are arranged in the device opening and are arranged in the upper and lower positions, and the screw cap is provided with an interface which can electrically connect the electrodes with the direct-current power supply; an opening communicated with the outside atmosphere is arranged on the end face of the spiral cover, the cathode electrode is close to the opening and a channel is reserved, and a resistance piece for forming resistance to the outward flowing of the solution through the opening is arranged at the opening; the wall shell of the container has a deformation amount which can increase the volume of the container during electrolysis; the resistance element is used for enabling the solution to have a first state that the resistance element prevents the solution from being discharged outwards and a second state that the solution can be discharged outwards through the resistance element. The device can be used for stably preparing subacidity hypochlorous acid water with the pH value of 5.5-6.5.
Description
Technical Field
The utility model relates to a system gets hypochlorous acid water device belongs to water electrolysis technical field.
Background
Currently, new types of coronaviruses are spreading manly around the world. Various disinfection products are sold on the market at a time for sterilization and disinfection. Among them, hypochlorous acid water is a new favorite in the market because of its broad-spectrum and high-efficient capability of killing virus microorganisms and its safety in use. The national food and drug administration of America and the Japan Thick health labor province successively affirm that low-concentration slightly acidic hypochlorous acid water is used as a food additive, and the national standard GB/T36758-2018 'hygienic requirement of chlorine-containing disinfectants' emphasizes that the hypochlorous acid water can be used in various occasions such as medical health institutions, various public places, food processing, restaurant stores, families and the like; and can also be used for the disinfection of various objects, including the disinfection of endoscopes, surgical instruments, sores/wounds, skin mucosa, air, hands, object surfaces, fabrics, fruits and vegetables, tableware, secondary water supply equipment, and the like.
Hypochlorous acid belongs to chlorine-containing disinfectants, and the bactericidal effective component of the hypochlorous acid is hypochlorous acid (HCLO). The pH value of hypochlorous acid water has great influence on the hypochlorous acid concentration in water. When the pH value is within the range of 5.5-6.5, the hypochlorous acid concentration tends to be maximum, and the sterilization effect of hypochlorous acid water is greatly enhanced; the more the pH value is shifted to alkalinity, the more hypochlorous acid in the hypochlorous acid water is converted into hypochlorite ion (OCL)-) The bactericidal power is reduced (according to the relevant test, the bactericidal power of hypochlorite ions is only about 80/1 of hypochlorous acid); when the pH of hypochlorous acid water is shifted to acidity, the amount of chlorine gas generated in water increases, and the hypochlorous acid concentration also decreases.
The method for preparing the hypochlorous acid water is various. The standard method is known to produce the product by electrolyzing 2-6% dilute hydrochloric acid (generally diluted with pure water) in a single-chamber, diaphragm-free electrolytic cell under a direct current voltage of about 2V. Chlorine and H are formed at the anode+，H+Dissolving in water to make the water acidic, and reacting chlorine gas with the water to generate hydrochloric acid and hypochlorous acid (HCLO) to make the effective chlorine concentration in the water reach 10-30 mg/L; the cathode generates hydrogen gas.
Hydrochloric acid is expensive and is a very toxic hazardous substance, so that the hydrochloric acid cannot be popularized and used because the substance is not easily available. At present, common salt (sodium chloride) is used to replace hydrochloric acid.
Sodium chloride is used as an electrolytic solution to prepare hypochlorous acid water, and a typical method is to adopt two-chamber type or three-chamber type diaphragm electrolysis. Taking a two-chamber electrolytic cell as an example, raw water (salt water) is sent into an anode chamber (or sent into a cathode chamber simultaneously), the water outlet of the anode chamber is acidic electrolyzed water, the water outlet of the cathode chamber is alkaline electrolyzed water, the alkaline electrolyzed water produced by the cathode chamber is mixed with the acidic electrolyzed water produced by the anode chamber according to a certain proportion, the pH value of the acidic electrolyzed water produced by the anode chamber is increased, and finally subacidic hypochlorous water with the pH value of 5.5-6.5 is obtained.
Another method for preparing hypochlorous acid water comprises electrolyzing sodium chloride aqueous solution without diaphragm to obtain alkaline sodium hypochlorite solution, and proportionally adding into the sodium hypochlorite solutionAdding acidThe solution (typically diluted hydrochloric acid, or weak acid such as acetic acid and carbonic acid) is gradually adjusted to lower the alkalinity of the sodium hypochlorite solution until the sodium hypochlorite solution becomes neutral or slightly acidic.
The key point of the existing device for preparing hypochlorous acid water by electrolyzing salt water is the online monitoring of pH value, and the online monitoring of oxidation-reduction potential or available chlorine is also arranged in some devices. The factors influencing the parameters are so many that the control system (usually single-parameter or multi-parameter closed-loop adjustment) has a very complex structure, the process control difficulty is high, the characteristic parameters are difficult to maintain stable, the safety is poor, and the like.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to simplify current structure and the technology of preparing hypochlorous acid water device to realize that the technology is reliable and stable, device simple structure, high safety prepare hypochlorous acid water, thereby be suitable for promoting and popularize to home.
The utility model discloses a solve the technical scheme that above-mentioned technical problem provided and be: a device for preparing hypochlorous acid water comprises a container for containing salt-containing solution, a cathode electrode, an anode electrode and a direct-current power supply for supplying power to the electrode to electrolyze the solution, wherein the container is provided with a contracted inlet and outlet, the outer wall of the inlet is provided with a screw cap in threaded connection, the cathode electrode and the anode electrode are arranged in the inlet, the anode electrode is positioned above the cathode electrode when the container is in a normal state that the inlet is placed downwards, and the screw cap is provided with an interface which can electrically connect the electrode with the direct-current power supply; the electrolytic cell is characterized in that an opening communicated with the atmosphere is arranged on the end face of the screw cap, the cathode electrode is close to the opening and is provided with a channel allowing the solution to pass through the opening, the wall shell of the container has a deformation amount capable of increasing the volume of the container during electrolysis, and a resistance piece for forming resistance pressure to the outward flowing of the solution through the opening is arranged at the opening; when the container is in the normal state, the resistance element is used for enabling the solution to have a first state that the resistance element prevents the solution from being discharged outwards and a second state that the solution is discharged outwards through the resistance element.
Further to the above, when the solution is in the first state, there is no gas in the container before electrolysis and the solution gravitational pressure-the resistance pressure is less than or equal to atmospheric pressure, or there is gas in the container at the beginning of electrolysis and the gas pressure formed by the gas + the solution gravitational pressure-the resistance pressure is less than or equal to atmospheric pressure; while the solution is in the second state: in electrolysis, there is a gas in the container and the gas forms a gas pressure + the gravitational pressure of the solution-the resistance pressure > atmospheric pressure. The deformation amount and the resistance pressure are set constant values. And a partition plate with holes is also arranged between the cathode electrode and the anode electrode. The negative electrode and the positive electrode are made into a mesh plate shape with micropores, and the channel is composed of the negative electrode, the positive electrode and holes on the partition plate. And the wall shell of the container is provided with an air outlet and an air outlet valve. The spiral cover is also connected with a waste liquid tank, and the waste liquid tank is provided with a normally open air hole communicated with the atmosphere, a waste discharge port and a waste discharge valve. The resistance member is a microporous plate, a microporous membrane or a pressure reducing valve.
The utility model has the advantages that:
1. compared with the existing hypochlorous acid water preparation process and device, the device provided by the invention has the advantages of simple structure, stable and reliable method, low requirements on components, extremely high cost performance, and suitability for popularization to thousands of households.
2. According to the device, the cathode and the anode are arranged in the container opening and are vertically arranged, direct current is provided for the cathode and the anode through the connector of the screw cap, and the cathode is close to the opening of the container opening, so that when the electrode is electrified to electrolyze solution in the container, heavy metal ions, alkali liquor (NaOH) and the like generated by electrolyzing the solution near the cathode can be discharged out of the container, and the quality and the safety of hypochlorous acid water prepared by electrolysis are improved.
3. The liquid container of the device can be any specific elastic deformation product in the existing market, such as mineral water bottle/barrel, and the like, and the corresponding resistance piece and the resistance pressure constant thereof can be configured according to the volume of the selected liquid container, so that the device is very convenient.
4. The device can stably prepare subacid hypochlorous acid water with the pH value of 5.5-6.5.
Drawings
The device for preparing hypochlorous acid water of the utility model is further explained with the attached drawings.
FIG. 1 is a schematic structural diagram of an apparatus for preparing hypochlorous acid water in the first embodiment.
FIG. 2 is a schematic structural diagram of a second embodiment of an apparatus for preparing hypochlorous acid water.
FIG. 3 is a schematic structural diagram of an apparatus for preparing hypochlorous acid water in the third embodiment.
FIG. 4 is a schematic structural diagram of an apparatus for preparing hypochlorous acid water in the fourth embodiment.
Fig. 5 is a partial enlarged view at I in fig. 4.
Detailed Description
Example one
The device for preparing hypochlorous acid water provided by this embodiment, as shown in fig. 1, comprises a container 1 for containing a salt-containing (salt is selected in this embodiment) solution and a dc power supply 6, wherein a contracted device port 2 for passing in and out the solution is arranged at the bottom of the container 1 when the container is placed normally, and the diameter of the device port 2 is much smaller than that of the container 1. A screw cap 3 is provided on the outer wall of the mouth 2, a pair of anode electrode 4 and cathode electrode 5 are provided in the mouth (i.e. anode electrode 4 is on top and cathode electrode 5 is on the bottom), and the cathode electrode 2 and anode electrode 5 can be made into plate, block or other shapes. A dc power supply 6 powers the anode electrode 4 and the cathode electrode 5 to cause electrolysis of the solution in the container 1. The screw cap 3 is provided with an interface for electrically connecting the electrodes (the anode electrode 4 and the cathode electrode 5) to the dc power supply 6. An opening 7 communicated with the atmosphere is arranged on the end face of the screw cap 3, the cathode electrode 5 is close to the opening 7 and is provided with a channel for the solution in the container 1 to pass through the opening 7, and a resistance part 8 for forming resistance pressure for the solution in the container 1 to flow outwards through the opening 7 is arranged at the opening 7. In this embodiment, the resistance member 8 is a microporous metal plate (expanded metal plate) with pores having a diameter of 10-100 μm, and the expanded metal plate has a surface tension to water or a salt-containing water to form a resistance pressure to the solution in the container 1 passing through the resistance member 8, and the resistance pressure is usually set to be constant according to the formation of the expanded metal plate and the pores thereof.
The wall shell of the container 1 has a set deformation amount which can increase the volume of the container 1 during electrolysis, the container 1 is usually a container filled with solution similar to a commercially available mineral water bottle or a mineral water bucket, and the mineral water bottle or the mineral water bucket is made of plastic products and can deform a certain amount to increase the volume of the container 1 by a certain amount, so the wall shell deformation amount of the container 1 can be set to be a constant, and the volume increase amount of the container 1 can also be set to be a constant.
The resistance member 8 is used for enabling the solution in the container 1 to have a first state that the solution is prevented by the resistance member 8 (namely, the solution cannot be discharged out through the opening 7) and a second state that the solution can be discharged out through the opening 7 during electrolysis; the process of preparing hypochlorous acid water specifically by the hypochlorous acid water preparing device of this embodiment is:
1) selecting a container with set deformation and containing salt solution (mineral water bottle or salt can be added in the mineral water bottle), selecting a resistance piece 8 with a certain set constant resistance pressure and arranging the resistance piece 8 at the opening 7 of the screw cap 3.
2) Screwing the vessel opening 2 of the vessel 1 and the screw cap 3 to enable the positive electrode 4 and the negative electrode 5 in the vessel opening 2 to be in butt joint with the interface of the screw cap 3, and then placing the vessel 1 in a normal placing state, wherein the normal placing state of the vessel 1 is a vertical state as shown in fig. 1, and the vessel opening 2 is arranged at the lowest part of the vessel 1; at this time, no gas is in the container 1, and the brine cannot be discharged through the micropores under the action of resistance pressure formed by the surface tension of the liquid at the micropores of the metal mesh plate and atmospheric pressure, namely, the resistance pressure Pty of the solution in the container to the resistance pressure Pty of the solution in the container 1 is less than or equal to atmospheric pressure, namely, the resistance member 8 with the resistance pressure can meet the first state that the solution in the container 1 cannot be discharged outwards through the opening 7.
3) Setting electrolysis time T according to the volume of the container 1, turning on a direct current power supply 6 to supply power to an anode electrode 4 and a cathode electrode 5, and electrolyzing saline solution (brine) contained in the container 1; the electrolysis takes place with the following electrochemical reactions:
2NaCL+2H2O+e→2NaOH+H2+Cl2+O2 (1)
2H2O+e→2H2+O2 (2)
H2O+Cl2→HClO+HCl (3)
2NaOH+Cl2＝2NaClO+H2 (4)；
cl formation at the anode 5 side2↓andO2×) and generates H on the cathode 2 side2×, Cl is formed at the anode 5 side2Dissolving in saline water to react to generate hypochlorous acid HClO; a part of Cl2And O2The water rises and collects in the upper space of the container 1 (the volume of the space is V1-V2) and gradually forms a gas pressure P to the saline water and the electrolysis solution in the container 1. At the beginning of electrolysis, P gas + P heavy-P resistance is less than or equal to atmospheric pressure, and the solution in the container 1 is still in the first state that the solution is prevented by the resistance element 8 and can not be discharged outwards through the opening 7.
4) During electrolysis, gas (Cl) is generated in the container 12、O2、H2) When the wall shell of the container 1 is deformed and the gas pressure formed by the gas in the container 1 + the resistance pressure (constant) of the gravitational pressure-resistance member 8 of the solution in the container 1 to the solution in the container 1 is greater than the atmospheric pressure, the brine in the container 1 is electrolyzed (particularly at the cathode 5) to generate the solution (the cathode side product NaOH is contained in the solution) and is discharged through the micropores of the resistance member 4 (metal mesh plate) at the opening 7, and the solution is discharged through the opening 7.
5) When the electrolysis time T is reached, the DC power supply 6 is closed, the screw cap 3 is unscrewed, and the electrolyzed solution in the container 1, which contains the anode side products hypochlorous acid HClO and sodium hypochlorite NaClO, is poured out from the container opening 2, thereby obtaining the required solution containing hypochlorous acid HClO.
In this embodiment, the volume of the vessel 1 except the vessel opening is basically the total amount of the prepared liquid that can be discharged, so even if the discharged liquid exceeds this volume, the anode 5 is exposed to the liquid surface in the vessel 1, and at this time, the electrolysis current drops to zero, and the electrolysis is automatically stopped, thereby achieving safety protection.
Example two
This embodiment is a variation on the first embodiment, as shown in fig. 2, except that the same as the first embodiment: (1) the cathode electrode 5 and the anode electrode 4 are made into a mesh plate shape with micropores; (2) a separator 9 with micropores is arranged between the cathode electrode 5 and the anode electrode 4; (3) the passage of the solution in the container 1 through the opening 7 becomes constituted by the micropores of the anode electrode 4, the cathode electrode 5 and the separator 9; (4) an exhaust port and an exhaust valve 10 are arranged on the wall shell of the container 1; (5) the resistance member 8 is replaced by a metal mesh plate by a water permeable microporous membrane.
EXAMPLE III
This embodiment is a variation on the second embodiment, and as shown in fig. 3, except that it is the same as the second embodiment: (1) the resistance piece 8 is replaced by a pressure reducing valve 11 by a metal mesh plate, a waste liquid tank 12 and a bypass valve 13 are connected to the pressure reducing valve 11, and a waste discharge port and a waste discharge valve 14 which is normally opened and communicated with the atmosphere are arranged on the waste liquid tank 12.
Example four
This embodiment is a refinement of the third embodiment, as shown in fig. 4 and 5, except that the same as the third embodiment:
(1) the container 1 adopts a mineral water bottle (salt can be added);
(2) the waste liquid tank 12 is connected with the screw cap 3 through screw threads, and the waste discharge valve 14 is replaced by a normally open air hole 15;
(3) the direct current power supply 6 adopts a battery and is directly arranged in the spiral cover 3;
(4) resistance 8) is also a water permeable microporous membrane;
(5) the bypass valve 13 is removed.
The utility model discloses a do not confine to above-mentioned each embodiment, all adopt the technical scheme who equates to replace and form, all fall in the utility model discloses the scope of protection that requires.
Claims (8)
1. A device for preparing hypochlorous acid water comprises a container for containing salt-containing solution, a cathode electrode, an anode electrode and a direct-current power supply for supplying power to the electrode to electrolyze the solution, wherein the container is provided with a contracted inlet and outlet, the outer wall of the inlet is provided with a screw cap in threaded connection, the cathode electrode and the anode electrode are arranged in the inlet, the anode electrode is positioned above the cathode electrode when the container is in a normal state that the inlet is placed downwards, and the screw cap is provided with an interface which can electrically connect the electrode with the direct-current power supply; the electrolytic cell is characterized in that an opening communicated with the atmosphere is arranged on the end face of the screw cap, the cathode electrode is close to the opening and is provided with a channel allowing the solution to pass through the opening, the wall shell of the container has a deformation amount capable of increasing the volume of the container during electrolysis, and a resistance piece for forming resistance pressure to the outward flowing of the solution through the opening is arranged at the opening; when the container is in the normal state, the resistance element is used for enabling the solution to have a first state that the resistance element prevents the solution from being discharged outwards and a second state that the solution is discharged outwards through the resistance element.
2. The apparatus for preparing hypochlorous acid water as claimed in claim 1, wherein: when the solution is in the first state, before electrolysis, no gas exists in the container, and the gravitational pressure-the resistance pressure of the solution is less than or equal to the atmospheric pressure, or when electrolysis starts, gas exists in the container, the gas pressure formed by the gas + the gravitational pressure-the resistance pressure of the solution is less than or equal to the atmospheric pressure; while the solution is in the second state: in electrolysis, there is a gas in the container and the gas forms a gas pressure + the gravitational pressure of the solution-the resistance pressure > atmospheric pressure.
3. The apparatus for preparing hypochlorous acid water as claimed in claim 1, wherein: the deformation amount and the resistance pressure are set constant values.
4. The apparatus for preparing hypochlorous acid water as claimed in claim 1, wherein: and a partition plate with holes is also arranged between the cathode electrode and the anode electrode.
5. The apparatus for preparing hypochlorous acid water as claimed in claim 4, wherein: the negative electrode and the positive electrode are made into a mesh plate shape with micropores, and the channel is composed of the negative electrode, the positive electrode and holes on the partition plate.
6. The apparatus for preparing hypochlorous acid water as claimed in claim 1, wherein: and the wall shell of the container is provided with an air outlet and an air outlet valve.
7. The apparatus for preparing hypochlorous acid water as claimed in claim 1, wherein: the spiral cover is also connected with a waste liquid tank, and the waste liquid tank is provided with a normally open air hole communicated with the atmosphere, a waste discharge port and a waste discharge valve.
8. The apparatus for preparing hypochlorous acid water as claimed in claim 1, wherein: the resistance member is a microporous plate, a microporous membrane or a pressure reducing valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020727246.XU CN212335313U (en) | 2020-05-06 | 2020-05-06 | Device for preparing hypochlorous acid water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020727246.XU CN212335313U (en) | 2020-05-06 | 2020-05-06 | Device for preparing hypochlorous acid water |
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| Publication Number | Publication Date |
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| CN212335313U true CN212335313U (en) | 2021-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020727246.XU Active CN212335313U (en) | 2020-05-06 | 2020-05-06 | Device for preparing hypochlorous acid water |
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| CN (1) | CN212335313U (en) |
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- 2020-05-06 CN CN202020727246.XU patent/CN212335313U/en active Active
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