CN115504545A - Device and method for preparing hypochlorous acid water - Google Patents

Abstract

The invention relates to a device and a method for preparing hypochlorous acid water, wherein the device comprises: the electrolytic tank comprises a shell assembly, a plurality of electrolytic tanks and a plurality of air inlets, wherein the shell assembly is provided with a liquid inlet for electrolyte to flow in, a liquid outlet for mixed products to flow out, an electrolytic chamber, a mixing chamber, an air passage and a water inlet; the electrode assembly is arranged in the electrolysis chamber and comprises a first electrode and a second electrode which are separated from each other, and the electrolysis chamber is communicated with the liquid inlet; the air passage is communicated with the electrolysis chamber and the mixing chamber to guide chlorine generated by electrolysis into the mixing chamber, and the water inlet is used for introducing an external water source into the mixing chamber so that water and chlorine are mixed in the mixing chamber and flow out of the liquid outlet.

Description

Device and method for preparing hypochlorous acid water

Technical Field

The invention relates to the technical field of electrochemistry, in particular to a device and a method for preparing hypochlorous acid water.

Background

The hypochlorous acid water is acidic electrolyzed water, has strong oxidizing capability and quick sterilization effect, is a high-efficiency, safe and environment-friendly sterilization liquid, and is widely applied to the industries of medical treatment, schools, agriculture, catering and the like.

At present, the device for preparing hypochlorous acid water on the market usually lets in the electrolysis cavity simultaneously for water and electrolyte for electrolysis and mixing go on simultaneously, or at first electrolyze out chlorine and collect the back in the electrolytic device, let in chlorine again in other devices with water and mix, the product that these two kinds of modes appear electrolyzing very easily is not stable enough or the problem that chlorine leaked appears.

Disclosure of Invention

In view of this, the disclosed embodiments provide an apparatus and a method for preparing hypochlorous acid water.

According to a first aspect of embodiments of the present disclosure, there is provided an apparatus for preparing hypochlorous acid water, the apparatus including:

the device comprises a shell assembly, a water inlet, a water outlet, an electrolysis chamber, a mixing chamber, a ventilation channel and a water inlet, wherein the shell assembly is provided with a liquid inlet for electrolyte to flow in, a liquid outlet for mixed products to flow out, the electrolysis chamber, the mixing chamber, the ventilation channel and the water inlet;

the electrode assembly is arranged in the electrolysis chamber and comprises a first electrode and a second electrode which are separated from each other, and the electrolysis chamber is communicated with the liquid inlet; the air passage is communicated with the electrolysis chamber and the mixing chamber to guide chlorine generated by electrolysis into the mixing chamber, and the water inlet is used for introducing an external water source into the mixing chamber so that water and chlorine are mixed in the mixing chamber and flow out of the liquid outlet.

In some embodiments, the housing assembly comprises: a cover body and a shell body;

the cover body is buckled on the shell in a sealing mode, a closed first space is formed by the end face, facing the shell, of the cover body and the inner wall of the shell in a surrounding mode, and a second space is formed inside the cover body;

the first space forms the electrolysis chamber and the second space forms the mixing chamber.

In some embodiments, at least one mixing blade is disposed within the mixing chamber;

the mixing blades are rotated by the drive of an external power assembly for promoting mixing of water and chlorine gas in the mixing chamber.

In some embodiments, the first electrode and the second electrode are provided with conductive posts leading out of the cover body, and the conductive posts are used for connecting with an external power supply component;

and a sealing structure is arranged between the conductive column and the cover body.

In some embodiments, a plurality of separators are arranged in a stacked manner in the electrolysis chamber, and the cover bodies at two ends of the shell clamp the plurality of separators therebetween;

the electrode assembly further comprises a plurality of intermediate electrodes;

the number of the intermediate electrodes corresponds to the number of the separators, and a plurality of the intermediate electrodes are disposed between the first electrode and the second electrode at intervals by the plurality of separators.

In some embodiments, each of the separators is provided with an air guide hole for allowing the chlorine gas generated by the electrolytic reaction to flow through, the air guide holes of the separators are communicated with each other and form an air guide channel, and the air guide channel is communicated with the mixing chamber.

In some embodiments, the vent channel and the mixing chamber are disposed on the same cover, the inlet of the vent channel is located on the inner surface of the cover and interfaces with the air vent on one of the baffles adjacent to the inlet, and the outlet of the vent channel is located on the sidewall of the mixing chamber.

In some embodiments, each of the partition plates is provided with a flow guide hole for flowing electrolyte, the flow guide holes of the partition plates are communicated with each other to form a flow guide channel, and the flow guide channel is communicated with the liquid inlet.

In some embodiments, a surface of the electrode assembly is provided with an anti-corrosion coating.

In some embodiments, the corrosion protection coating is a palladium coating.

In some embodiments, the apparatus further comprises:

and the gas sensor is arranged at the liquid outlet and used for measuring the concentration of gas.

According to a second aspect of embodiments of the present disclosure, there is provided a method for preparing hypochlorous acid water using the apparatus according to any one of the above embodiments, comprising the steps of:

electrolyte is introduced into the electrolysis chamber through the liquid inlet, the electrolyte generates chlorine gas through electrolytic reaction in the electrolysis chamber, and the chlorine gas enters the mixing chamber through the ventilation channel;

introducing water into the mixing chamber through a water inlet, and mixing the chlorine gas and the water in the mixing chamber to generate hypochlorous acid water;

and discharging the mixed hypochlorous acid water through a liquid outlet.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:

the electrolysis cavity and the mixing cavity of the embodiment of the present disclosure are arranged in the same shell assembly of the device, only electrolyte is introduced into the electrolysis cavity, and only water is introduced into the mixing cavity, so that the concentration of the electrolyte entering the electrolysis cavity, the liquid inlet amount and the water inlet amount entering the mixing cavity can be accurately controlled, and the problem that the products obtained by electrolysis are not stable enough is solved. In addition, because the electrolysis chamber and the mixing chamber are arranged in the same shell assembly of the same device, chlorine generated by electrolysis is fully mixed with water in the mixing chamber, and finally, the chlorine water flows out of the shell assembly directly as a final product, namely hypochlorous acid water, so that the possibility of leakage caused by chlorine gas collection and chlorine gas re-introduction in the related art is reduced.

Drawings

FIG. 1 is a schematic diagram illustrating the configuration of an apparatus for producing hypochlorous acid water in accordance with an exemplary embodiment;

FIG. 2 is a schematic view of the device of FIG. 1 from another perspective;

FIG. 3 isbase:Sub>A cross-sectional view taken along the line A-A in FIG. 2;

FIG. 4 is a cross-sectional view taken along the line B-B in FIG. 1;

FIG. 5 is an exploded schematic view of the apparatus of FIG. 1;

FIG. 6 illustrates a method of preparing hypochlorous acid water according to an exemplary embodiment.

Description of the reference numerals

100-a device for preparing hypochlorous acid water;

1-a housing assembly; 1 a-a cover; 1 b-a housing; 11-a liquid inlet; 12-a liquid outlet; 13-an electrolysis chamber; 14-a mixing chamber; 15-a vent channel; 16-a water inlet;

2-an electrode assembly; 2 a-conductive pillars; 2 b-a separator; 21-a first electrode; 22-a second electrode; 201-air guide holes; 2011-air guide channel; 202-flow guiding holes; 2021-a flow guide channel.

Detailed Description

The following describes in detail embodiments of the present invention with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

The terminology used in the disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The terms "first," "second," and the like, as used in the description and in the claims, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Similarly, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one, and if only "a" or "an" is denoted individually. "plurality" or "a number" means two or more. Unless otherwise indicated, "front", "rear", "lower" and/or "upper" and the like are for convenience of description and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed after "comprises" or "comprising" is inclusive of the element or item listed after "comprising" or "comprises", and the equivalent thereof, and does not exclude additional elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this disclosure and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

The disclosed embodiment provides an apparatus 100 for preparing hypochlorous acid water.

As shown in fig. 1 to 5, the apparatus 100 includes: a can assembly 1 and an electrode assembly 2.

The housing assembly 1 is an external protective housing of the device, and the housing assembly 1 has various functional devices and chambers for realizing the functions of the device inside. The housing component 1 may be made of plastic or the like, for example, PVDF (polyvinylidene fluoride) material. PVDF has multiple excellent properties such as aging resistance, chemical resistance, and heat resistance, and can effectively prevent the corrosion of the electrolyte entering the case assembly 1. Of course, the housing assembly 1 may also be made of any other suitable material.

The housing component 1 can be manufactured, for example, by an injection molding process that is fast, efficient and dimensionally accurate.

The shape of the housing assembly 1 may be, for example, a rectangular parallelepiped, a square, a cylinder, or the like.

It should be understood by those skilled in the art that the shape, material and size of the housing assembly 1 are not limited by the embodiments of the present disclosure, and can meet the actual use requirement.

The housing assembly 1 is provided with a liquid inlet 11 for the inflow of electrolyte, a liquid outlet 12 for the outflow of mixed products, an electrolysis chamber 13, a mixing chamber 14, a ventilation channel 15 and a water inlet 16.

The electrolyte may be any solution capable of electrolytically generating chlorine gas. The electrolyte can be hydrochloric acid solution, for example, the hydrochloric acid solution can be electrolyzed to obtain hydrogen and chlorine, the chlorine and water are mixed and reacted to prepare hypochlorous acid water, and the hydrogen can be discharged into the external atmosphere, so that the environment is not polluted and is environment-friendly. In addition, no sodium ions are left in hypochlorous acid water prepared from the hydrochloric acid solution, so that the harm to a human body caused by excessive sodium ion residues is avoided, and the prepared hypochlorous acid water is safer.

In some other embodiments, the electrolyte may also be a sodium chloride solution or a mixed solution of hydrochloric acid and potassium chloride, and the like.

The electrolysis chamber 13 is a chamber for carrying out an electrolysis reaction inside the housing assembly 1, the electrolysis chamber 13 is communicated with the liquid inlet 11, the electrolyte enters the electrolysis chamber 13 through the liquid inlet 11, and the electrolysis reaction is carried out in the electrolysis chamber 13 to generate chlorine.

The electrolysis chamber 13 can be divided into a diaphragm type electrolysis chamber and a non-diaphragm type electrolysis chamber, in the embodiment of the present disclosure, the electrolysis chamber 13 is a non-diaphragm type electrolysis chamber, and the non-diaphragm type electrolysis chamber has a simple structure, is convenient to operate, and has a low cost.

In some other embodiments, a diaphragm type electrolysis chamber may also be employed.

The inside of the electrolysis chamber 13 is provided with an electrode assembly 2, and the electrode assembly 2 is connected to an external power supply assembly.

The electrode assembly 2 can be made of metal titanium, for example, and no toxic substance is precipitated in the process of electrolysis of the titanium electrode, so that the device is safer and more environment-friendly, has better corrosion resistance and longer service life. In some other embodiments, the electrode assembly may also be made of any other material, such as metallic platinum or metallic palladium, for example.

The electrode assembly 2 includes a first electrode 21 and a second electrode 22. The first electrode 21 is connected to the positive power supply electrode as an anode electrode and the second electrode 22 is connected to the negative power supply electrode as a cathode electrode, or the first electrode 21 is connected to the negative power supply electrode as a cathode electrode and the second electrode 22 is connected to the positive power supply electrode as an anode electrode.

In the disclosed embodiment, the electrode assembly 2 is generally in the form of a circular sheet that conforms to the shape of the chamber within the electrolysis chamber 13. In some other embodiments, the electrode assembly 2 may have any other shape such as a plate-like structure or a mesh structure, and is not particularly limited herein.

The first electrode 21 and the second electrode 22 are separated from each other at both sides of the electrolytic chamber 13, and any portion of the first electrode 21 and the second electrode 22 is not in contact to prevent a short circuit, thereby ensuring the normal operation of the electrolytic chamber 13.

The mixing chamber 14 is a chamber in which mixing is performed inside the housing assembly 1, and the mixing chamber 14 communicates with the electrolysis chamber 13 through the vent passage 15. Chlorine gas generated by electrolysis of the electrolyte in the electrolysis chamber 13 enters the mixing chamber 14 through the vent passage 15.

As shown in fig. 4, the housing assembly 1 includes a water inlet 16, the water inlet 16 communicating the mixing chamber 14 with an external water inlet means for introducing an external water source into the mixing chamber 14. The water inlet device can be a water tap or a water storage tank and the like.

The chlorine and the water are fully mixed in the mixing chamber 14 to form the desired final product hypochlorous acid water, and the hypochlorous acid water flows out from the liquid outlet 12.

The mixing chamber 14 may be arranged in the housing assembly 1, for example, in parallel with the electrolysis chamber 13, separated by a partition. The mixing chamber 14 may also be arranged spaced apart from the electrolysis chamber 13 in any other distributed manner within the housing assembly 1.

In the related art, the apparatus for preparing hypochlorous acid water is generally prepared by mixing before or after. The first mixing means that electrolyte and water are simultaneously injected into an electrolysis chamber in the device, gas generated by electrolysis directly carries out mixing reaction with the water in the electrolysis chamber, and electrolysis and mixing are simultaneously carried out in the electrolysis chamber. The post-mixing means that only electrolyte is introduced into the electrolysis chamber, only electrolysis reaction occurs, gas generated by electrolysis is discharged out of the device for collection, and the gas is mixed and reacted with water in other processes and other devices to generate hypochlorous acid water.

When the hypochlorous acid water is prepared, in order to guarantee the effective chlorine concentration of the finally-produced hypochlorous acid water, the concentration of the electrolyte, the liquid inlet quantity and the water inlet quantity need to be accurately controlled, and if the electrolyte and the water cannot obtain an accurate ratio, the required qualified hypochlorous acid water is difficult to produce. And adopt the mode of mixing earlier to prepare hypochlorous acid water, hardly control the ratio between electrolyte and the water in the electrolysis cavity, consequently, probably lead to the structure of electrolyzing out stable inadequately, can't produce the hypochlorous acid water that has qualified effective chlorine concentration, reduced the practicality.

The post-mixing process, whether during the collection of the chlorine or during the introduction of the chlorine into other devices, can present problems of chlorine leakage, which can be harmful to the associated operators and the environment.

In this disclosed embodiment, the device includes solitary electrolysis cavity 13 and mixing chamber 14, only lets in electrolyte in the electrolysis cavity 13, only lets in water in the mixing chamber 14, consequently, concentration, the feed liquor volume of the electrolyte that can accurate control enters into in the electrolysis cavity 13 and the inflow that enters into in the mixing chamber 14, can obtain the accurate ratio of electrolyte and water, and the effective chlorine concentration of the hypochlorous acid water of guarantee final output improves production efficiency and production effect.

In some embodiments, the apparatus may further include a control system, and the control system is connected to an external water inlet device or an electrolyte introducing device, and is configured to control a liquid inlet amount of the electrolyte entering the electrolysis chamber 13 and a water amount entering the mixing chamber 14, so as to control an effective chlorine content, a pH value, and the like of the hypochlorous acid water obtained by preparation, thereby further improving the production efficiency.

In addition, in the disclosed embodiment, the electrolysis chamber 13 and the mixing chamber 14 are disposed within the housing assembly 1 of the device, within the same enclosed space. Chlorine gas generated in the electrolysis chamber 13 directly enters the mixing chamber 14 through the ventilation channel 15 in the housing assembly 1 and is fully mixed with water in the mixing chamber 14, and finally, the final product hypochlorous acid water and a small amount of hydrogen gas generated in the electrolysis reaction directly flow out of the liquid outlet 12 of the housing assembly 1, and the chlorine gas is not discharged out of the device, so that the possibility of chlorine gas leakage is reduced.

The housing assembly 1 includes: a cover 1a and a case 1b.

As shown in fig. 1, the housing assembly 1 of the embodiment of the present disclosure includes two cover bodies 1a, and the two cover bodies 1a are detachably and hermetically fastened to the housing 1b from two ends, respectively. In some embodiments, the housing assembly 1 may also include only one cover.

The detachable mounting of the cover 1a and the housing 1b facilitates subsequent maintenance and replacement of functional components inside the housing assembly 1.

The lid 1a and the case 1b may be sealed by a sealing structure to prevent leakage of liquid or gas inside the case assembly 1.

The sealing structure includes, but is not limited to, a sealing ring. The size and material of the sealing ring are not particularly limited in the embodiment of the present disclosure, and the sealing ring only needs to ensure the sealing between the cover body 1a and the housing 1b and to satisfy the actual operating conditions. Illustratively, the seal ring may be a nitrile rubber seal ring.

The cover 1a is substantially rectangular and the case 1b is substantially cylindrical. The size and material of the cover 1a and the housing 1b are also not particularly limited in the embodiment of the present disclosure as long as the actual operation requirements can be met.

As shown in fig. 3, the end surface of the cover 1a facing the housing 1b and the inner wall of the housing 1b enclose a closed first space, which forms the electrolysis chamber 13 of the device according to the embodiment of the present disclosure. Since the electrolytic chamber 13 is filled with the electrolytic solution, the inner walls of the lid body 1a and the case body 1b may be coated with an inert insulating corrosion-proof coating, so that the service life of the apparatus can be increased.

In the embodiment of the present disclosure, the housing assembly 1 has a liquid inlet 11, the liquid inlet 11 is opened on one of the cover bodies 1a of the housing assembly 1, and the electrolyte flows into the electrolysis chamber 13 through the liquid inlet 11 to perform an electrolysis reaction. In some other embodiments, the housing assembly 1 may have more liquid inlets, and the liquid inlets may be disposed on the same cover body at intervals, or disposed on different cover bodies relatively.

As also shown in fig. 3, a second space, i.e., the mixing chamber 14 of the apparatus of the embodiment of the present disclosure, is formed inside one cover body 1a of the housing assembly 1, i.e., the mixing chamber 14 is formed on the cover body 1 a. Forming the mixing chamber 14 by using the inner space of the lid body 1a can reduce the entire volume of the case assembly 1 without occupying the space of the electrolysis chamber 13, thereby reducing the volume of the entire apparatus.

The mixing chamber 14 may be located on the same cap 1a as the loading port 11, or may be located on a different cap 1a from the loading port 11. In some embodiments, the interior of both covers 1a of the housing assembly 1 may form a mixing chamber 14.

As shown in fig. 4, the water inlet 16 and the liquid outlet 12 are opened on the cover body forming the mixing chamber 14, and the water inlet 16 is used for communicating the mixing chamber 14 with an external water inlet device so as to introduce an external water source into the mixing chamber 14. The introduced water and chlorine gas are fully mixed in the mixing chamber 14 to form the desired final product hypochlorous acid water, and the hypochlorous acid water flows out from the liquid outlet 12.

At least one mixing blade 141 is disposed within the mixing chamber 14.

As shown in fig. 3 and 5, in the disclosed embodiment, two mixing blades 141 are provided within the mixing chamber 14. In some other embodiments, more mixing blades 141 may be provided where the space of the mixing chamber 14 is sufficient.

Mixing blade 141 rotates through the drive of external power component for promote the mixture of water and chlorine in mixing chamber 14, so, not only can accelerate the mixture of water and chlorine in mixing chamber 14, still be favorable to water and chlorine to carry out abundant mixing in mixing chamber 14, improve the effective chlorine concentration of the hypochlorous acid water of output.

The external power component may be, for example, an electric motor.

The first electrode 21 and the second electrode 22 are provided with conductive posts 2a extending from the lid 1a, and the conductive posts 2a are used for connection with an external power supply unit for supplying power to the electrode unit 2.

In the embodiment of the present disclosure, the motor assembly 2 is provided with two conductive pillars 2a, and the two conductive pillars 2a are respectively connected to the first electrode 21 and the second electrode 22, and extend to the outside of the cover 1a through the cylindrical through groove in the center of the cover 1a to be connected to an external power supply component.

For example, the conductive pillar 2a may be fixedly connected to the first electrode 21 and the second electrode 22 by soldering.

A sealing structure is provided between the conductive post 2a and the lid 1a, and is used for preventing leakage of the electrolyte or gas generated by electrolysis in the electrolysis chamber 13.

The sealing structure includes, but is not limited to, a sealing ring. The size and material of the sealing ring in the embodiment of the present disclosure are not limited in particular, and the sealing ring only needs to ensure the sealing between the conductive pillar 2a and the cover body 1a and meet the actual operating conditions. Illustratively, the seal ring may be a nitrile rubber seal ring.

A plurality of separators 2b are stacked in the electrolytic chamber 13, and the plurality of separators 2b are held between the covers 1a at both ends of the case 1b. The partition 2b may also be made of an insulating material such as plastic.

Illustratively, the front surface of the partition plate 2b is provided with a snap and the rear surface is provided with a snap hole, the cover facing the front surface of the partition plate 2b is a front cover, and the cover facing the rear surface of the partition plate 2b is a rear cover. The inner wall of the front cover body is provided with buckles, the inner wall of the rear cover body is provided with clamping holes, and the buckles correspond to the clamping holes in position. In this way, when the plurality of separators 2b arranged in a stacked manner are sandwiched between the front cover and the rear cover, they can be fixed by fitting the snap and the snap hole.

It should be understood by those skilled in the art that the fixing structure is not necessarily a snap or a hole, but may be any other fixing structure such as a screw and a threaded hole.

In the disclosed embodiment, the electrode assembly 2 includes a plurality of intermediate electrodes 23 in addition to the first electrode 21 and the second electrode 22, and each of the first electrode 21, the second electrode 22, and the plurality of intermediate electrodes 23 is detachably mounted in the electrolysis chamber 13. The detachable mounting may facilitate subsequent replacement of the first electrode 21, the second electrode 22, and the plurality of intermediate electrodes 23, and if any one of the electrodes in the electrode assembly 2 is damaged, only the damaged electrode needs to be replaced, without replacing the entire electrode assembly.

The number of the intermediate electrodes 23 corresponds to the number of the separators 2b, and the plurality of intermediate electrodes 23 are disposed at intervals between the first electrode 21 and the second electrode 22 via the plurality of separators 2 b.

The electrode assembly 2 includes a plurality of intermediate electrodes 23 in addition to the first and second electrodes 21 and 22, the plurality of intermediate electrodes 23 being disposed between the first and second electrodes 21 and 22, and the intermediate electrodes 23 being spaced apart from each other by separators 2b from the first and second electrodes 21 and 22 and the respective intermediate electrodes 23 such that no contact occurs between any portions of each electrode to prevent short circuits, thereby securing normal operation of the electrolysis chamber 13.

In the embodiment of the present disclosure, the partition board 2b is adapted to the shape of the housing 1b and is substantially annular, and the annular partition board exposes the electrodes through the middle through hole. In some other embodiments, the separator 2b may have any other suitable shape as long as the separator 2b can expose the electrodes and function to separate the electrodes.

The first electrode 21 and the second electrode 22 are respectively connected with the positive electrode and the negative electrode of an external power supply component, and the intermediate electrode 23 positioned between the first electrode 21 and the second electrode 22 is not directly connected with the external power supply component but participates in the electrolytic reaction through weak current in the electrolyte, so that an independent small electrolytic chamber can be formed between every two electrodes. The electrode assembly 2 using such multiple electrodes can make electrolysis more sufficient so that the electrolysis chamber can still generate a sufficient amount of chlorine gas with a small volume.

In the presently disclosed embodiment, 9 separators 2b are provided in the electrolysis chamber 13, and the electrode assembly 2 includes 8 intermediate electrodes 23, the number of the intermediate electrodes 23 corresponding to the number of the separators 2 b. In some other embodiments, fewer or more separators may be disposed within the electrolysis chamber and the electrode assembly may include fewer or more intermediate electrodes, depending on the size of the electrolysis chamber.

As shown in fig. 3 and 5, each of the separators 2b is provided with an air guide hole 201 through which chlorine gas generated by the electrolytic reaction flows, the air guide holes 201 of the separators 2b are communicated with each other to form an air guide passage 2011, and the air guide passage 2011 is communicated with the mixing chamber 14.

Gas-guide holes 201 are formed in the separator 2b, and gas generated by electrolysis in each of the small electrolysis chambers can flow through the gas-guide holes 201. When the plurality of separators 2b are stacked, the air-guide holes 201 of each separator 2b are positioned to correspond to each other and communicate with each other to form an air-guide passage 2011. The gas guide passage 2011 is communicated with the mixing chamber 14, so that the gas generated by electrolysis in the electrolysis chamber 13 enters the mixing chamber 14 through the gas guide passages 2011 formed by the gas guide holes 201 of the plurality of partition plates 2b, and is mixed with water to form the final product hypochlorous acid water.

As shown in fig. 3, the vent channel 15 and the mixing chamber 14 are disposed on the same cover body 1a, the inlet of the vent channel 15 is located on the inner surface of the cover body 1a and is butted against the air guide hole 201 on one of the partition plates 2b adjacent to the inlet, and the outlet of the vent channel 15 is located on the side wall of the mixing chamber 14, that is, the air guide channel 2011 formed by the air guide holes 201 communicating with each other communicates with the vent channel 15 and communicates with the mixing chamber 14 through the vent channel 15.

The gas generated by electrolysis in the electrolysis chamber 13 enters the aeration passage 15 through the aeration passage 2011 formed by the air-guide holes 201 of the plurality of separators 2b communicating with each other, and enters the mixing chamber 14 through the aeration passage 15 to be mixed with water to form the final product hypochlorous acid water.

As shown in fig. 3 and fig. 5, each partition plate 2b is provided with a flow guide hole 202 for the electrolyte to flow through, the flow guide holes 202 of the partition plates 2b are communicated with each other to form a flow guide channel 2021, and the flow guide channel 2021 is communicated with the liquid inlet 11.

The flow guide holes 202 are also formed in the partition plate 2b, and the electrolyte introduced from the liquid inlet 11 can flow through the flow guide holes 202. When the plurality of partition plates 2b are stacked, the positions of the diversion holes 202 of each partition plate 2b correspond to each other, and communicate with each other to form a diversion passage 2021. The electrolyte enters the flow guide channel 2021 formed by the flow guide holes 202 through the liquid inlet 11 and sequentially flows into a plurality of small electrolysis chambers formed by the electrodes and the partition plates inside the electrolysis chamber 13, so that an electrolysis current loop is formed between the electrodes to perform an electrolysis reaction in each small electrolysis chamber.

When the device is in operation, the electrode assembly 2 is soaked in the electrolyte for a long time, and therefore, the disclosed embodiment provides an anti-corrosion coating on the surface of the electrode assembly 2, and thus, the service life of the electrode assembly 2 can be improved.

In the disclosed embodiment, the corrosion protection coating on the surface of the electrode assembly 2 is a palladium coating. Palladium metal, a noble metal, has approximately the same corrosion resistance as gold. Therefore, the palladium metal is coated on the surface of the electrode assembly 2, so that the acid and alkali corrosion resistance of the electrode assembly 2 can be effectively improved. In addition, the hardness of the metal palladium is much higher than that of gold, so that the performance of the electrode assembly 2 in resisting impact and abrasion is better, and the service life of the electrode assembly 2 is effectively prolonged.

In some other embodiments, the corrosion protection coating may also be platinum, iridium, ruthenium, or the like, for example.

Illustratively, the corrosion protection coating may be deposited on the surface of the electrode assembly 2 by physical vapor deposition. Of course, the surface of the electrode assembly 2 may be coated with the corrosion protection coating in any other manner.

The device further comprises a gas sensor arranged at the liquid outlet 12 for measuring the concentration of the gas.

In order to ensure that the chlorine gas and the water can be sufficiently mixed, a gas sensor is arranged at the liquid outlet 12, and the gas sensor can be used for measuring the concentration of the chlorine gas.

If the sensor detects that chlorine is still present, it indicates that the chlorine and water have not been fully mixed and that the outlet 12 cannot be opened. On the contrary, if the sensor detects that no chlorine exists, the chlorine generated by electrolysis is fully mixed with the water, and at the moment, the liquid outlet 12 can be opened to discharge the fully mixed hypochlorous acid water.

Set up gas sensor in liquid outlet 12 department and not only can ensure the intensive mixing of chlorine and water to obtain the hypochlorous acid water that has qualified effective chlorine concentration, can also prevent revealing of chlorine.

As shown in fig. 6, an embodiment of the present disclosure further provides a method for preparing hypochlorous acid water by using the apparatus in any one of the above embodiments, including the following steps:

s1: electrolyte is introduced into the electrolysis cavity through the liquid inlet, the electrolyte generates chlorine gas through electrolytic reaction in the electrolysis cavity, and the chlorine gas enters the mixing cavity through the ventilation channel.

In the embodiment of the present disclosure, the electrolyte used is a mixed solution of dilute hydrochloric acid and potassium chloride, where the concentration of the dilute hydrochloric acid is 6% and the concentration of the potassium chloride is 3%.

After the device is filled with electrolyte into the electrolysis chamber through the liquid inlet, the power supply assembly is switched on, the electrolysis chamber starts to work, the current provided by the power supply assembly is generally between 0.7A (ampere) and 1.3A, wherein the OH with negative electricity is ^- And Cl ^- Moving towards the anode, positively charged K ⁺ And H ⁺ Moving towards the cathode.

The anode is subjected to oxidation reaction: 2Cl ^- -2e＝Cl ₂ ↑

And (3) carrying out reduction reaction on the cathode: 2H ⁺ +2e＝H ₂ ↑

Chlorine and hydrogen generated by electrolysis enter the mixing chamber through the vent channel.

S2: and introducing water into the mixing chamber through a water inlet, and mixing the chlorine gas and the water in the mixing chamber to generate hypochlorous acid water.

When chlorine generated in the electrolysis chamber enters the mixing chamber and is mixed with water introduced into the mixing chamber, acidic hypochlorous acid water is formed, and the reaction formula is as follows:

H ₂ O+Cl ₂ ＝HCl+HClO

s3: and discharging the mixed hypochlorous acid water through a liquid outlet.

By using the device and the method provided by the embodiment of the disclosure to prepare hypochlorous acid water, not only can the chlorine gas and water be fully mixed in the device, the leakage of the chlorine gas is reduced, but also the effective chlorine concentration of the produced hypochlorous acid water is improved.

The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, numerous simple modifications can be made to the technical solution of the invention, including combinations of the individual specific technical features in any suitable way. The invention is not described in detail in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.

Claims (12)

1. An apparatus for producing hypochlorous acid water, comprising:

the device comprises a shell assembly, a water inlet, a water outlet, an electrolysis chamber, a mixing chamber, a ventilation channel and a water inlet, wherein the shell assembly is provided with a liquid inlet for electrolyte to flow in, a liquid outlet for mixed products to flow out, the electrolysis chamber, the mixing chamber, the ventilation channel and the water inlet;

the electrode assembly is arranged in the electrolysis chamber and comprises a first electrode and a second electrode which are separated from each other, and the electrolysis chamber is communicated with the liquid inlet; the air passage is communicated with the electrolysis chamber and the mixing chamber to guide chlorine generated by electrolysis into the mixing chamber, and the water inlet is used for introducing an external water source into the mixing chamber so that water and chlorine are mixed in the mixing chamber and flow out of the liquid outlet.

2. The device of claim 1, wherein the housing assembly comprises: a cover and a housing;

the cover body is buckled on the shell in a sealing mode, a closed first space is formed by the end face, facing the shell, of the cover body and the inner wall of the shell in a surrounding mode, and a second space is formed inside the cover body;

the first space forms the electrolysis chamber and the second space forms the mixing chamber.

3. The device of claim 1 or 2, wherein at least one mixing blade is disposed within the mixing chamber;

the mixing blades are rotated by the drive of an external power assembly for promoting mixing of water and chlorine gas in the mixing chamber.

4. The apparatus of claim 2,

the first electrode and the second electrode are provided with conductive columns led out of the cover body, and the conductive columns are used for being connected with an external power supply assembly;

and a sealing structure is arranged between the conductive column and the cover body.

5. The apparatus of claim 2,

a plurality of clapboards which are arranged in a stacked mode are further arranged in the electrolysis chamber, and the clapboards are clamped between the cover bodies positioned at two ends of the shell;

the electrode assembly further comprises a plurality of intermediate electrodes;

the number of the intermediate electrodes corresponds to the number of the separators, and the plurality of intermediate electrodes are arranged between the first electrode and the second electrode at intervals through the plurality of separators.

6. The apparatus of claim 5,

and air guide holes for allowing chlorine generated by electrolytic reaction to flow are formed in the clapboards, the air guide holes of the clapboards are communicated with each other to form air guide channels, and the air guide channels are communicated with the mixing chamber.

7. The apparatus of claim 6, wherein the vent channel and the mixing chamber are disposed on the same cover, the inlet of the vent channel is located on the inner surface of the cover and interfaces with the air vent in one of the baffles adjacent to the inlet, and the outlet of the vent channel is located on the sidewall of the mixing chamber.

8. The apparatus of claim 5,

each baffle is provided with a flow guide hole for the circulation of electrolyte, the flow guide holes of the baffles are mutually communicated and form a flow guide channel, and the flow guide channel is communicated with the liquid inlet.

9. The apparatus of claim 1,

the surface of the electrode assembly is provided with an anti-corrosion coating.

10. The apparatus of claim 9,

the corrosion-resistant coating is a palladium coating.

11. The apparatus of claim 1, further comprising:

and the gas sensor is arranged at the liquid outlet and used for measuring the concentration of gas.

12. A method for preparing hypochlorous acid water using the apparatus according to any one of claims 1 to 11, comprising the steps of:

electrolyte is introduced into the electrolysis chamber through the liquid inlet, the electrolyte generates chlorine gas through electrolytic reaction in the electrolysis chamber, and the chlorine gas enters the mixing chamber through the ventilation channel;

introducing water into the mixing chamber through a water inlet, and mixing the chlorine gas and the water in the mixing chamber to generate hypochlorous acid water;

and discharging the mixed hypochlorous acid water through a liquid outlet.

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