CN214734714U - Electrolytic tank and device for preparing metal ion-free EOW - Google Patents

Abstract

The utility model relates to an EOW preparation technical field, concretely relates to preparation does not contain metal ion EOW's electrolysis trough and device. The device for preparing the EOW without metal ions comprises an electrolytic bath, wherein the electrolytic bath comprises a bath body, an anion membrane assembly, a cathode and an anode, a cavity is formed in the bath body, a liquid injection port for injecting electrolyte is further formed in the bath body, a water inlet for entering pure water and a water outlet for flowing out the EOW are further formed in the bath body, the anion membrane assembly is located in the cavity and separates the cavity to form a cathode cavity and an anode cavity, the liquid injection port is communicated with the cathode cavity, the water inlet and the water outlet are communicated with the anode cavity, the cathode is located in the cathode cavity, and the anode is located in the anode cavity. Because the anion membrane assembly only allows the ions with negative charges to pass through and limits the ions with positive charges to pass through, the metal cations in the cathode cavity cannot enter the anode cavity through the anion membrane assembly, so that the EOW generated in the anode cavity does not contain the metal cations, and the good sterilization effect of the prepared EOW is ensured.

Description

Electrolytic tank and device for preparing metal ion-free EOW

Technical Field

The utility model relates to an EOW preparation technical field, concretely relates to preparation does not contain metal ion EOW's electrolysis trough and device.

Background

The first application of Electrolyzed Oxidizing Water (EOW) dates to japan in the 80's of the 20 th century, and it was first used in the medical field and then used for cleaning and disinfecting medical instruments because it has a remarkable sterilizing effect on MRSA. Through years of research and practice, the advantages of high efficiency of EOW sterilization, no residual toxicity after sterilization, no harm to human bodies, no pollution to the environment, contribution to environmental protection and the like are gradually accepted by people and are gradually popularized in many fields.

Because of the unique functions of EOW, EOW production is a hot spot of active research. However, EOW prepared by using the existing EOW device and the existing EOW preparation method generally contains certain metal ions, which will affect the sterilization effect of EOW, and therefore, further improvement of EOW preparation is necessary.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main objective is: the utility model provides an electrolytic cell and a device for preparing metal ion-free EOW, which aims to solve the problem that EOW prepared by the existing EOW device contains certain metal ions and influences the sterilization effect of the EOW.

In order to realize the technical problem, the utility model provides a preparation does not contain metal ion EOW's electrolysis trough, preparation does not contain metal ion EOW's electrolysis trough includes cell body, anion membrane module, negative pole and positive pole, be formed with the cavity in the cell body, just still set up the notes liquid mouth that is used for pouring into electrolyte, the water inlet that is used for getting into the pure water and be used for flowing out EOW's delivery port on the cell body, anion membrane module is located in the cavity, and will the cavity is separated and is formed negative pole chamber and positive pole chamber, annotate the liquid mouth with negative pole chamber intercommunication, the water inlet reaches the delivery port all with positive pole chamber intercommunication, the negative pole is located the negative pole intracavity, the positive pole is located the positive pole intracavity.

Optionally, the anionic membrane module is annularly disposed within the cavity.

Optionally, the cathode is annularly arranged in the cathode cavity;

the anode is annularly arranged in the anode cavity.

Optionally, the water inlet and the water outlet are respectively arranged on two opposite sides of the tank body, and the axial direction of the liquid injection port is perpendicular to the axial directions of the water inlet and the water outlet.

Optionally, the electrolytic cell for preparing metal ion-free EOW further comprises an overflow pipe for discharging waste liquid in the cathode cavity.

Optionally, the cathode is in a mesh structure; the anode is of a net structure.

The utility model also provides a device for preparing metal ion EOW, the device for preparing metal ion EOW comprises the electrolytic bath for preparing metal ion EOW as described in any one of the above.

Optionally, the device for preparing metal ion-free EOW further comprises a circulation box, the water inlet is communicated with the circulation box through a water inlet pipe, the water outlet is communicated with the circulation box through a water outlet pipe, and the circulation box is further provided with a water injection port for injecting pure water and a water discharge port for discharging EOW.

Optionally, the device for preparing metal ion-free EOW further comprises a PH detection element, and the PH detection element is used for detecting the PH value of the liquid in the circulation tank.

Optionally, the apparatus for preparing metal ion-free EOW further comprises a liquid level sensor for detecting the liquid level in the circulation tank.

The utility model has the advantages that: the electrolytic cell of the device for preparing the EOW without the metal ions comprises a cell body, an anion membrane assembly, a cathode and an anode, wherein the anion membrane assembly separates a cavity in the cell body to form a cathode cavity and an anode cavity, the cell body is provided with a liquid injection port communicated with the cathode cavity and a water inlet communicated with the anode cavity, when the EOW is prepared, electrolyte can be injected into the cathode cavity, pure water is injected into the anode cavity, the cathode in the cathode cavity and the anode in the anode cavity are subjected to electrolytic reaction, the EOW is generated in the anode cavity, and then the EOW in the anode cavity can flow out from the water outlet, so that the EOW is prepared. Because the anion membrane assembly only allows the ions with negative charges to pass through and limits the ions with positive charges to pass through, the anions in the cathode cavity can pass through the anion membrane assembly and generate EOW in the anode cavity, and the metal cations in the cathode cavity cannot enter the anode cavity through the anion membrane assembly, so that the EOW generated in the anode cavity does not contain the metal cations, and the good sterilization effect of the prepared EOW is ensured.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic diagram of the structure of an electrolytic cell for preparing metal ion-free EOW according to the present invention;

FIG. 2 is a cross-sectional view of the cell of FIG. 1 for producing metal ion free EOW;

FIG. 3 is another cross-sectional view of the cell of FIG. 1 for producing metal ion free EOW;

FIG. 4 is a schematic structural diagram of an apparatus for preparing metal ion-free EOW according to the present invention;

FIG. 5 is an exploded view of the apparatus of FIG. 4 for preparing metal ion free EOW;

FIG. 6 is a schematic view of a portion of the structure of FIG. 5;

FIG. 7 is a cross-sectional view of the apparatus of FIG. 4 for producing metal ion free EOW;

wherein the correspondence between the reference numbers and the names of the components in fig. 1 to 7 is:

10. an electrolytic cell; 11. a trough body; 111. a liquid injection port; 112. a water inlet; 113. a water outlet; 114. a cathode cavity; 115. an anode cavity; 12. an anionic membrane module; 13. a cathode; 14. an anode; 15. an overflow pipe;

20. a circulation box; 21. a water injection port; 22. a drain pipe; 23. a water circulating pump;

31. a water inlet pipe; 32. a water outlet pipe;

40. a pH detection member;

51. a high liquid level sensing element; 52. a low level sensing element;

60. a power source;

70. a controller;

80. an interactor;

90. a case.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the communication may be direct, indirect via an intermediate medium, or internal to both elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

An embodiment of the utility model provides a preparation metal ion EOW's electrolysis trough 10 does not, as shown in fig. 1 to 3, preparation metal ion EOW's electrolysis trough 10 includes cell body 11, anion membrane module 12, negative pole 13 and positive pole 14, be formed with the cavity in the cell body 11, and still offer the notes liquid mouth 111 that is used for pouring into electrolyte on the cell body 11, a delivery port 113 for getting into the water inlet 112 of pure water and being used for flowing out EOW, anion membrane module 12 is located the cavity, and separate the cavity and form negative pole chamber 114 and positive pole chamber 115, it communicates with negative pole chamber 114 to annotate liquid mouth 111, water inlet 112 and delivery port 113 all communicate with positive pole chamber 115, negative pole 13 is located negative pole chamber 114, positive pole 14 is located positive pole chamber 115.

The electrolytic cell 10 of the device for preparing metal ion-free EOW comprises a cell body 11, an anion membrane assembly 12, a cathode 13 and an anode 14, wherein the anion membrane assembly 12 separates a cavity in the cell body 11 to form a cathode cavity 114 and an anode cavity 115, the cell body 11 is provided with a liquid injection port 111 communicated with the cathode cavity 114 and a water inlet 112 communicated with the anode cavity 115, when EOW is prepared, electrolyte can be injected into the cathode cavity 114, pure water is injected into the anode cavity 115, the cathode 13 in the cathode cavity 114 and the anode 14 in the anode cavity 115 perform electrolytic reaction, EOW is generated in the anode cavity 115, and then the EOW in the anode cavity 115 can flow out from a water outlet 113, so that the EOW is prepared. Since the anion membrane assembly 12 only allows the negatively charged ions to pass through and limits the positively charged ions to pass through, the anions in the cathode chamber 114 can pass through the anion membrane assembly 12 and generate EOW in the anode chamber 115, and the metal cations in the cathode chamber 114 cannot enter the anode chamber 115 through the anion membrane assembly 12, so that the EOW generated in the anode chamber 115 does not contain the metal cations, and the good sterilization effect of the prepared EOW is ensured.

In this embodiment, the anionic membrane module 12 is annularly disposed within the chamber. Specifically, in the present embodiment, the tank body 11 is a rectangular parallelepiped and hollow structure formed by enclosing a top plate, a bottom plate and four side plates, the anion membrane module 12 includes four anion membrane sets connected in sequence, the four anion membrane sets are parallel to the four side plates respectively and leave gaps with the four side plates respectively, wherein the anion membrane group comprises an ion membrane bracket and an anion membrane, the ion membrane bracket is formed by assembling and connecting two brackets with the same structure and cuboid shapes, the ion membrane is fixed between the two brackets, and a plurality of windows for exposing the ionic membrane are distributed on the ionic membrane bracket, the anion generator also comprises a fixed bracket which is arranged vertical to the anion membrane group, and the four anion membrane groups are fixed on the top plate through the fixed bracket, in addition, in order to form a relatively closed cavity, the tank body 11 further includes a surrounding plate which is arranged outside the four side plates and is abutted against the bottom plate. This preparation does not contain electrolysis trough 10 of metal ion EOW, the space between anion membrane module 12 and the four curb plates is anode cavity 115, remaining space is cathode cavity 114, because electrolyte need inject into cathode cavity 114 in, cathode cavity 114's volume is far greater than anode cavity 115's volume, overall structure sets up rationally, and during the electrolysis, anion in cathode cavity 114 can enter into anode cavity 115 through anion membrane module 12 homodisperse on the one hand, and it flows out by delivery port 113 to generate EOW, on the other hand a plurality of anions of being convenient for pass through smoothly, improve EOW's preparation efficiency. In addition, in this embodiment, all seted up the draw-in groove on roof and the bottom plate, four curb plates all block admittedly in the draw-in groove of roof and bottom plate, have also seted up the draw-in groove on the fixed bolster, and four ionic membrane supports all block admittedly in the draw-in groove of fixed bolster. Of course, in other embodiments, the shape of the anionic membrane module 12 is not particularly limited.

Further, in the present embodiment, the cathode 13 is annularly disposed in the cathode chamber 114, and the anode 14 is annularly disposed in the anode chamber 115. Specifically, in this embodiment, the cathode 13 is in a rectangular parallelepiped shape with an opening at the top and the bottom, the anode 14 is similar to the cathode 13, electrode holes for the leads of the cathode 13 and the anode 14 to pass through are respectively formed on the bottom plate of the tank 11, and sealing treatment is performed at the electrode holes, and in order to facilitate free movement of ions in the cavity, the cathode 13 and the anode 14 may adopt a mesh structure. By adopting the cathode 13 and the anode 14 with the structure, the area of the cathode 13 and the area of the anode 14 are relatively large, the sensitivity during electrolysis can be improved, so that different chemical reactions can be fully carried out in the cathode cavity 114 and the anode cavity 115 respectively, the moving speed of ions is high, and the preparation efficiency and the preparation quality of the EOW are further improved. Of course, in other embodiments, the shapes of the cathode 13 and the anode 14 are not limited to this, and a mesh electrode may not be used, and a certain gap may be left between the cathode 13 and the top plate and the bottom plate of the tank 11, that is, the cathode 13 is soaked in the electrolyte so that ions pass through, and a certain gap may also be left between the anode 14 and the top plate and the bottom plate of the tank 11.

In this embodiment, the water inlet 112 and the water outlet 113 are respectively disposed on two opposite sides of the tank body 11, and the axial direction of the liquid injection port 111 is perpendicular to the axial direction of the water inlet 112 and the water outlet 113. Specifically, in the present embodiment, the water inlet 112 and the water outlet 113 are respectively disposed on two opposite side plates of the tank body 11, the axial directions of the water inlet 112 and the water outlet 113 are not on the same line, and the liquid injection port 111 is disposed on the top plate. So for this preparation does not contain metal ion EOW's electrolysis trough 10 overall structure sets up more rationally, the water inlet 112 of being convenient for, delivery port 113 and annotate the seting up of liquid mouth 111, moreover, the pure water enters into to positive pole chamber 115 by the water inlet 112 on the curb plate in, the route extension in positive pole chamber 115, the distance of electrolytic reaction is farther, can flow out by delivery port 113 on another relative curb plate again after abundant electrolysis, the electrolytic reaction effect is better. Of course, in other embodiments, the opening positions of the liquid injection port 111, the water inlet 112 and the water outlet 113 may be determined according to actual requirements.

In this embodiment, the electrolytic cell 10 for producing metal ion-free EOW further includes an overflow pipe 15 for discharging the waste liquid in the cathode chamber 114. Thus, the waste liquid in the cathode chamber 114 after electrolysis can be rapidly discharged through the overflow pipe 15 for collection or centralized treatment, wherein the waste liquid is alkaline potential water and can be used as a cleaning solution.

Another embodiment of the present invention provides an apparatus for preparing metal ion-free EOW, which includes an electrolytic bath 10, as shown in fig. 4 to 7.

In this embodiment, the apparatus for preparing EOW without metal ions further includes a circulation box 20, the water inlet 112 is connected to the circulation box 20 through the water inlet pipe 31, the water outlet 113 is connected to the circulation box 20 through the water outlet pipe 32, the circulation box 20 is further provided with a water inlet 21 for injecting pure water and a water outlet for discharging EOW, and the water outlet is provided with a water discharge pipe 22. When preparing EOW, injecting pure water into the circulation box 20 from the water injection port 21, injecting electrolyte into the cathode cavity 114 from the liquid injection port 111, allowing the pure water in the circulation box 20 to continuously enter the anode cavity 115 from the water inlet 112 through the water inlet pipe 31 for electrolysis, allowing the electrolyzed EOW to continuously flow back into the circulation box 20 from the water outlet 113 through the water outlet pipe 32, thereby realizing continuous circulation electrolysis between the circulation box 20 and the electrolytic cell 10, ensuring both the preparation quality and the preparation efficiency of the EOW until the preparation of the EOW is completed, and allowing the EOW to be discharged from the water discharge port through the water discharge pipe 22 for sterilization and disinfection. Furthermore, in the present embodiment, in view of smooth circulation of pure water between the circulation tank 20 and the electrolytic bath 10, a circulation water pump 23 is further included, the circulation water pump 23 is provided on the water outlet pipe 32 or the water inlet pipe 31, and in view of smooth discharge of EOW, a drain pump is further included, the drain pump is provided on the drain pipe 22, and in view of smooth discharge of waste liquid in the cathode chamber 114, a drain pump is further included, the drain pump is provided on the overflow pipe 15, and the circulation water pump 23, the drain pump, and the drain pump respectively play a role of supplying transport energy. In addition, in the present embodiment, in order to further improve the efficiency of EOW production, two electrolytic cells 10 may be provided.

It should be noted that, in this embodiment, the apparatus for preparing metal ion-free EOW further includes a PH detecting member 40, and the PH detecting member 40 is used for detecting the PH of the liquid in the circulation tank 20. In the process of continuously circulating and electrolyzing the pure water between the anode cavity 115 of the electrolytic cell 10 and the circulating tank 20 through the circulating water pump 23, the pH detection piece 40 detects the pH value of the liquid in the circulating tank 20 in real time, when the pH detection piece 40 detects that the pH value of the liquid in the circulating tank 20 is between 2 and 3, the EOW preparation is completed, the electrolytic cell 10 stops working, and at the moment, the EOW can be discharged from the circulating tank 20. Through setting up PH detection piece 40, can carry out real-time detection to the PH value of liquid in circulation case 20 to feedback PH data, and discharge EOW again after PH detects qualified, realize through the preparation of PH control EOW, guarantee that the EOW of preparation accords with the acidity requirement, wherein, PH detection piece 40 can be for PH meter etc..

In this embodiment, the apparatus for preparing metal ion-free EOW further includes a liquid level sensor for detecting the liquid level in the circulation tank 20. Specifically, in this embodiment, the liquid level sensor is a contact type liquid level sensor, and the liquid level sensor includes a high liquid level sensing part 51 and a low liquid level sensing part 52, and when the liquid level of the liquid in the circulation box 20 reaches the highest liquid level requirement, the high liquid level sensing part 51 is triggered, and when the liquid level of the liquid in the circulation box 20 reaches the lowest liquid level requirement, the low liquid level sensing part 52 is triggered. When preparing EOW, initially, the liquid level of the liquid in the circulation box 20 is lower than the highest liquid level, the electromagnetic valve switch at the water injection port 21 is opened, pure water in the circulation box 20 is injected into the circulation box 20 from the water injection port 21 until the high liquid level sensing piece 51 is triggered, the electromagnetic valve switch is closed to stop water injection, the electrolytic cell 10 starts to work, electrolyte is injected into the cathode cavity 114 from the liquid injection port 111, the pure water continuously enters the anode cavity 115 of the electrolytic cell 10 from the circulation box 20 for circular electrolysis, when the PH value of the liquid in the circulation box 20 is between 2 and 3, the electrolytic cell 10 stops working, the EOW is discharged from the water discharge port through the water discharge pipe 22 until the low liquid level sensing piece 52 is triggered, and the EOW returns to the initial water preparation process repeatedly. Through setting up high liquid level response 51 and low liquid level response 52, can carry out the detection of highest liquid level and minimum liquid level respectively, realize the preparation through PH and level sensor control EOW, guarantee going on smoothly of whole circulation system water process.

In this embodiment, the device for preparing the metal ion-free EOW further comprises a power supply 60 and a controller 70, the power supply 60 provides power, and the effect of supplying power to the whole device is realized, the controller 70 is electrically connected with the power supply 60, the PH detection part 40, the high liquid level sensing part 51, the low liquid level sensing part 52 and other structures, the liquid level sensor or the PH detection part 40 can feed back liquid level data or PH data to the controller 70 in real time, and then automatic control is performed through the controller 70, so that the effect of intelligent control on the whole EOW preparation process is realized, and the normal operation of each structure of the device for preparing the metal ion-free EOW is ensured. Moreover, in this embodiment, the apparatus for preparing the metal ion-free EOW further includes an interactor 80, the interactor 80 is electrically connected to the controller 70, and human-computer interaction is performed through the interactor 80 to achieve an effect of controlling the whole apparatus or feeding back working information of the whole apparatus, wherein the interactor 80 may be a device having an interaction function, such as a PLC touch screen.

In this embodiment, the device for preparing metal ion-free EOW further comprises a case 90, the electrolytic cell 10, the circulation box 20, the power supply 60, the controller 70, the interaction device 80 and the like are all installed on the case 90, the electrolytic cell 10, the circulation box 20, the power supply 60 and the controller 70 are all located in the case 90, so that the appearance of the whole device looks tidier and more attractive, the interaction device 80 is located outside the case 90, man-machine interaction is facilitated, the case 90 is divided into an upper layer and a lower layer, the electrolytic cell 10 and the circulation box 20 are located on the lower layer and are arranged in parallel, the power supply 60 and the controller 70 are located on the upper layer, and the overall layout is very reasonable and simple. In addition, in this embodiment, four corners of the bottom end of the chassis 90 are further respectively provided with a support leg extending downward, so as to support the entire device.

Another embodiment of the present invention provides a method for preparing metal ion-free EOW, which is used in the above apparatus for preparing metal ion-free EOW, and the method for preparing metal ion-free EOW includes: electrolyte is injected into the cathode cavity 114 through the liquid injection port 111, and pure water enters the anode cavity 115 through the water inlet port 112; supplying power to the cathode 13 and the anode 14, the cathode 13 and the anode 14 performing an electrolytic reaction, and generating EOW in the anode chamber 115; and the generated EOW flows out of the water outlet 113.

According to the preparation method of the EOW without the metal ions, when the EOW is prepared, electrolyte is injected into the cathode cavity 114 from the liquid injection port 111, pure water enters the anode cavity 115 from the water inlet 112 and supplies power to the cathode 13 and the anode 14, the cathode 13 and the anode 14 perform an electrolytic reaction, the EOW is generated in the anode cavity 115, and the generated EOW flows out from the water outlet 113, so that the preparation of the EOW is realized. The preparation method of the EOW without the metal ions is simple, the preparation of the EOW is convenient, and the prepared EOW does not contain metal cations and has a good sterilization effect.

It should be noted that, the electrolyte is a pure water salt solution, when preparing EOW, a preparation instruction is input through the interactor 80, the power supply 60 is turned on, the controller 70 controls the electromagnetic valve switch at the water injection port 21 to be opened, pure water is injected into the circulation box 20 from the water injection port 21 until the high liquid level sensing element 51 is triggered, the high liquid level sensing element 51 feeds back data to the controller 70, the electromagnetic valve switch is closed to stop water injection, at this time, the controller 70 controls the electrolytic cell 10 to start working, the electrolyte is injected into the cathode cavity 114 from the liquid injection port 111, the pure water in the circulation box 20 continuously enters the anode cavity 115 from the water inlet 112 through the water inlet pipe 31, electrolysis is performed at a certain current density, the anion membrane assembly 12 only allows chloride ions to pass through but prevents sodium ions from passing through, the anode 14 mainly generates chlorine evolution reaction and oxygen evolution reaction, and further obtains EOW without sodium ions in the anode cavity 115, and the main components of the EOW are chlorine gas, oxygen evolution, and EOW without sodium ions are obtained in the anode cavity 115, Hypochlorous acid, hypochlorite, hydrochloric acid, dissolved oxygen, ozone and the like, the electrolyzed EOW continuously flows back to the circulating box 20 from the water outlet 113 through the water outlet pipe 32, in the circulation electrolysis, the PH detection part 40 detects the PH value of the liquid in the circulation box 20 in real time in the process, when the PH detecting member 40 detects that the PH of the liquid in the circulation tank 20 is between 2 and 3, the PH detection element 40 feeds back data to the controller 70, at this time, the controller 70 controls the electrolytic cell 10 to stop working, the prepared EOW is discharged to the storage cylinder through the water discharge port by the water discharge pipe 22 until the low liquid level sensing element 52 is triggered, the low liquid level sensing element 52 feeds back data to the controller 70, the EOW discharge is completed, the EOW can be used for sterilization and disinfection, waste liquid in the cathode cavity 114 is rapidly discharged through the overflow pipe 15, the operation is repeated initially, the repeated water making process is started, and the whole water making process is performed automatically.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims (10)

1. An electrolytic cell for producing metal ion free EOW, comprising:

the device comprises a tank body (11), wherein a cavity is formed in the tank body (11), and the tank body (11) is also provided with a liquid injection port (111) for injecting electrolyte, a water inlet (112) for entering pure water and a water outlet (113) for flowing out of EOW;

the anion membrane assembly (12) is positioned in the cavity and divides the cavity into a cathode cavity (114) and an anode cavity (115), the liquid injection port (111) is communicated with the cathode cavity (114), and the water inlet (112) and the water outlet (113) are both communicated with the anode cavity (115); and

a cathode (13) and an anode (14), the cathode (13) being located within the cathode chamber (114), the anode (14) being located within the anode chamber (115).

2. An electrolysis cell according to claim 1, wherein the anionic membrane module (12) is disposed annularly within the chamber.

3. An electrolysis cell according to claim 1 or 2, wherein the cathode (13) is annularly disposed within the cathode chamber (114);

the anode (14) is annularly arranged in the anode cavity (115).

4. An electrolytic cell for preparing metal ion free EOW according to claim 1, wherein the water inlet (112) and the water outlet (113) are respectively arranged on two opposite sides of the cell body (11), and the axial direction of the liquid injection port (111) is perpendicular to the axial direction of the water inlet (112) and the water outlet (113).

5. An electrolysis cell for the production of metal ion free EOW according to claim 1, further comprising an overflow pipe (15) for discharging waste liquid in the cathode chamber (114).

6. An electrolysis cell according to claim 1, wherein the cathode (13) is of mesh structure; the anode (14) is of a net structure.

7. An apparatus for producing metal ion-free EOW, comprising the electrolytic cell (10) for producing metal ion-free EOW according to any one of claims 1 to 6.

8. An apparatus for preparing metal ion-free EOW according to claim 7 further comprising a circulation box (20), wherein the water inlet (112) is communicated with the circulation box (20) through a water inlet pipe (31), the water outlet (113) is communicated with the circulation box (20) through a water outlet pipe (32), and the circulation box (20) is further provided with a water injection port (21) for injecting pure water and a water discharge port (22) for discharging EOW.

9. An apparatus for preparing metal ion-free EOW according to claim 8 further comprising a pH sensor (40) for sensing the pH of the liquid in the circulation tank (20).

10. An apparatus for preparing a metal ion-free EOW according to claim 8 or 9 further comprising a liquid level sensor for detecting a liquid level in the circulation tank (20).

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