A quick-change gas diffusion electrode electrolysis module for food purification tanks

Abstract

The present invention discloses a quick-change gas diffusion electrode electrolysis module for food purification water tanks, which relates to the field of electrochemical technology. It includes a shell, an electrolytic cell unit, a conductive sheet, a gas pipe fitting, a power supply module and a connector; a mounting slot is provided at the front end of the shell, and the conductive sheets are symmetrically arranged on the upper and lower inner walls of the mounting slot. A plurality of electrolytic cell units are evenly inserted into the mounting slot, and the upper and lower positive and negative poles of the electrolytic cell unit are respectively connected to the upper and lower conductive sheets. The gas pipe fitting is installed in the cavity, and the gas pipe fitting is connected to the inside of the electrolytic cell unit to pass oxygen into the gas pipe fitting and into the electrolytic cell unit. There are positive and negative connecting wires on the power supply module, and the two wires are respectively connected to the upper and lower conductive sheets through the connector. The entire disassembly and assembly process of the present invention is simple, and the replacement cost of the electrode module in the purification water tank is reduced, and it is used to remove various harmful substances such as agricultural residues and pathogens from food.

Description

Technical Field

[0001] The present invention belongs to the technical field of electrochemistry, and in particular relates to a quick-change gas diffusion electrode electrolysis module for a food purification water tank. Background Art

[0002] In daily life, food purification plays a vital role in ensuring food safety, promoting healthy eating, and conserving water resources. Harmful substances such as pesticides, chemicals, bacteria, and pathogens left on food can seriously harm health. Traditional food purification methods typically rely on manual washing or mechanical mixing, which fail to provide deep cleaning and disinfection of food.

[0003] Ozone oxidation and electrolysis technologies can effectively and rapidly remove harmful substances remaining in food. However, as a strong oxidant, ozone can adversely affect organs such as the respiratory tract. Furthermore, during the disinfection process, ozone can react with organic matter in the water to produce harmful byproducts such as bromate, which can easily cause secondary contamination of food. Electrolysis technology, by electrolyzing water molecules into hydroxyl radicals (·OH), triggers a series of chain reactions that effectively remove harmful substances from water without producing toxic byproducts. It is a promising method for purifying food.

[0004] H2O2 can be rapidly photolyzed under the action of ultraviolet radiation (UV) to quickly produce a large number of hydroxyl free radicals. H2O2 can be produced online through the electrochemical method of cathode oxygen reduction. By integrating the UV / H2O2 electrolysis module into the food purification tank, deep cleaning and disinfection of food ingredients can be achieved. However, the electrolysis modules of today's purification tanks all use submerged electrodes, which only use the dissolved oxygen in the water for two-electron oxygen reduction reactions. The amount of H2O2 produced is low and is not enough to produce sufficient ·OH. At the same time, the electrolysis module is usually composed of multiple sets of anodes and cathodes welded to the terminal posts, and a single electrode cannot be disassembled. This means that when a problem occurs with a certain electrode or its life is exhausted, it cannot be replaced individually. The entire electrode group can only be replaced, which is costly and inconvenient.

[0005] Therefore, it is an urgent problem for those skilled in the art to propose a quick-change gas diffusion electrode electrolysis module for food purification tanks to solve the difficulties existing in the prior art. Summary of the Invention

[0006] In view of this, in order to solve these difficulties, the present invention has developed a gas diffusion electrode electrolysis module for producing hydrogen peroxide. Through the introduction of oxygen and tap water in the water tank, a two-electron oxygen reduction reaction occurs on the gas diffusion electrode, thereby producing sufficient hydrogen peroxide for removing various harmful substances such as pesticide residues and pathogens in food.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A quick-change gas diffusion electrode electrolysis module for a food purification tank, comprising a housing, a plurality of independent electrolysis cell units, a first conductive sheet, a second conductive sheet, a gas transmission pipe, a power supply module, and a connector;

[0009] The first conductive sheet and the second conductive sheet are symmetrically arranged on the inner wall of the mounting groove opened on the front surface of the housing; the power supply module is arranged on the inner wall of the side of the housing;

[0010] The first conductive sheet and the second conductive sheet are connected to the power supply module through a connector;

[0011] Multiple independent electrolytic cell units are evenly inserted into the installation slot, and the positive electrode and negative electrode of each electrolytic cell unit are connected to the first conductive sheet and the second conductive sheet respectively;

[0012] A cavity is provided on the rear end face of the shell, and a gas pipe is installed in the cavity. The gas pipe is connected to the interior of each independent electrolytic cell unit, and the gas pipe is connected to an external gas source;

[0013] The connecting piece is electrically connected to the power supply module via a connecting wire.

[0014] The above-mentioned module, optionally, the first conductive sheet and the second conductive sheet are respectively connected to the positive and negative poles of the power supply module, and the first conductive sheet and the second conductive sheet are arranged in a U shape, one end of which is arranged as a folded end, and a slot is formed on the surface of the single folded end, and the slot is used to insert the positive and negative poles of the electrolytic cell unit, and grooves matching the folded ends on the first conductive sheet and the second conductive sheet are provided on the upper and lower inner walls of the mounting groove on the outer shell, and card slots are also provided on both sides of the mounting groove, so that the first conductive sheet and the second conductive sheet can be inserted into the mounting groove.

[0015] The above module, optionally, the electrolytic cell unit includes an anode conductive plate, a cathode conductive plate, a gas diffusion electrode, a waterproof gasket, and a cathode gas chamber connected in sequence;

[0016] The anode conductive plate and the cathode conductive plate are separated by a gasket;

[0017] Two mutually connected electrolytic cell unit air inlet pipes are arranged on the same side of the cathode gas chamber.

[0018] The above module can optionally be configured to energize the electrolytic cell unit by correspondingly inserting the upper end of the cathode conductive plate and the lower end of the anode conductive plate into the slots formed by the folded ends of the first conductive sheet and the second conductive sheet.

[0019] The above module optionally includes a gas delivery pipe comprising a plurality of connecting pipes plugged into the gas inlet pipe of the electrolyzer unit, an air intake main pipe connected to the connecting pipes, an air supply pipe connected to the air intake main pipe, and an air supply pipe externally connected to an air source device.

[0020] The above-mentioned module optionally includes a connecting part including a conductive column with threads and a locking nut on the outer wall, the conductive column is fixedly connected to the connecting wire on the power supply module, and a slot is provided at one end of the first conductive sheet and the second conductive sheet, and the conductive column is inserted into the slot and fixed by the locking nut.

[0021] As can be seen from the above technical solutions, compared with the prior art, the present invention provides a quick-change gas diffusion electrode electrolysis module for food purification tanks, which has the following beneficial effects:

[0022] Through the introduction of oxygen and tap water in the sink, a two-electron oxygen reduction reaction occurs on the gas diffusion electrode, thereby producing sufficient hydrogen peroxide. The entire disassembly and assembly process is simple, and the replacement cost of the electrode module in the purification tank is reduced. It is used to remove various harmful substances such as pesticide residues and pathogens in food. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0024] Figure 1 This is a front structural schematic diagram of a quick-change gas diffusion electrode electrolysis module housing for a food purification water tank disclosed in the present invention;

[0025] Figure 2 This is an external structural diagram of the conductive sheet disclosed in the present invention;

[0026] Figure 3 This is a diagram showing the external structure of the electrolytic cell unit disclosed in the present invention;

[0027] Figure 4 This is a schematic diagram of the back mounting structure of the housing disclosed in the present invention;

[0028] Figure 5 This is a schematic diagram of the installation position of the electrolysis module disclosed in the present invention.

[0029] Description of the drawings: 1. Outer shell; 2. Electrolytic cell unit; 21. Cathode gas chamber; 22. Waterproof gasket; 23. Gas diffusion electrode; 24. Cathode conductive plate; 25. Anode conductive plate; 31. First conductive plate; 32. Second conductive plate; 4. Gas transmission pipe; 41. Gas supply pipe; 42. Air intake manifold; 43. Connecting pipe; 5. Cavity; 6. Power supply module; 7. Connecting wire; 8. Connecting piece; 9. Electrolytic cell unit air intake pipe; 10. Folding end; 11. Purified water tank; 12. Electrolysis module. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] In this application, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. The terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or apparatus comprising the element.

[0032] Reference Figure 1 As shown, the present invention discloses a quick-change gas diffusion electrode electrolysis module for a food purification tank, comprising a housing 1, a plurality of independent electrolysis cell units 2, a first conductive sheet 31, a second conductive sheet 32, a gas delivery pipe 4, a power supply module 6 and a connector 8;

[0033] The first conductive sheet 31 and the second conductive sheet 32 ​​are symmetrically arranged on the inner wall of the mounting groove opened on the front surface of the housing 1; the power supply module 6 is arranged on the inner wall of the side of the housing 1;

[0034] The first conductive sheet 31 and the second conductive sheet 32 ​​are connected to the power supply module 6 via the connector 8;

[0035] Multiple independent electrolytic cell units 2 are evenly inserted into the installation slot, and the positive electrode and negative electrode of each electrolytic cell unit 2 are connected to the first conductive sheet 31 and the second conductive sheet 32 ​​respectively;

[0036] The rear end face of the housing 1 is provided with a cavity 5, in which a gas pipe 4 is installed. The gas pipe 4 is connected to the interior of each independent electrolytic cell unit 2, and the gas pipe 4 is connected to an external gas source.

[0037] The connecting member 8 is electrically connected to the power supply module 6 via a connecting wire 7 .

[0038] Reference Figure 2As shown, the first conductive sheet 31 and the second conductive sheet 32 ​​are respectively connected to the positive and negative poles of the power supply module 6, and the first conductive sheet 31 and the second conductive sheet 32 ​​are set to be U-shaped, one end of which is set to be a folding end 10, and a slot is formed on the surface of the single folding end 10, and the slot is used to insert the positive and negative poles of the electrolytic cell unit, and grooves matching the folding ends 10 on the first conductive sheet 31 and the second conductive sheet 32 ​​are provided on the upper and lower inner walls of the mounting groove on the shell 1, and card slots are also provided on both sides of the mounting groove, so that the first conductive sheet 31 and the second conductive sheet 32 ​​can be inserted into the mounting groove.

[0039] Reference Figure 3 As shown, the electrolytic cell unit 2 includes an anode conductive plate 25, a cathode conductive plate 24, a gas diffusion electrode 23, a waterproof gasket 22, and a cathode gas chamber 21 connected in sequence;

[0040] The anode conductive plate 25 and the cathode conductive plate 24 are separated by a gasket;

[0041] Two electrolytic cell unit air inlet pipes 9 that are interconnected are provided on the same side of the cathode gas chamber 21 .

[0042] Furthermore, during installation, the upper end of the cathode conductive plate 24 and the lower end of the anode conductive plate 25 are correspondingly inserted into the slots formed by the folded ends 10 of the first conductive sheet 31 and the second conductive sheet 32 ​​to energize the electrolytic cell unit 2 .

[0043] Furthermore, the gas delivery pipe 4 includes a plurality of connecting pipes 43 plugged into the electrolytic cell unit air inlet pipe 9, an air intake manifold 42 connected to the connecting pipes 43, and an air supply pipe 41 connected to the air intake manifold 42. The air supply pipe 41 is connected to an external air source device.

[0044] Furthermore, the connecting member 8 includes a conductive column with threads and a locking nut on the outer wall. The conductive column is fixedly connected to the connecting wire 7 on the power supply module 6. A slot is provided at one end of the first conductive sheet 31 and the second conductive sheet 32. The conductive column is inserted into the slot and fixed by the locking nut.

[0045] Reference Figure 4 and Figure 5 As shown, during installation, the first conductive sheet 31 and the second conductive sheet 32 ​​are pre-installed in the front mounting groove of the housing 1, and then one end of the two connecting wires 7 on the power supply module 6 is connected to one end of the first conductive sheet 31 and the second conductive sheet 32 ​​through their respective connectors 8. Then, the positive and negative terminals on each independent electrolytic cell unit 2 are aligned with the slots of the upper and lower first conductive sheets 31 and the second conductive sheet 32 ​​to energize the electrolytic cell unit 2. Next, the electrolytic cell unit air inlet pipe 9 of the electrolytic cell unit 2 is connected to the connecting pipe 43. Finally, the whole is installed on one side of the purified water tank, as shown in FIG. Figure 5When in use, oxygen is introduced to the gas diffusion electrode 23 of the electrolytic cell unit through an external gas source device connected to the gas supply pipe 41. At the same time, a two-electron oxygen reduction reaction occurs on the gas diffusion electrode 23 through the tap water in the water tank, thereby producing sufficient hydrogen peroxide to remove various harmful substances such as pesticide residues and pathogens from food. In addition, each electrolytic cell unit is independent of each other, and the normal operation of the whole can still be guaranteed in the event of damage. It can be selectively replaced according to the wear and tear of each electrolytic cell unit 2. It only needs to unplug a single electrolytic cell unit 2 and replace it with a new one after turning off the power. The entire disassembly and assembly process is simple and reduces the replacement cost of the electrode module in the purified water tank.

[0046] Each embodiment in this specification is described in a progressive manner. The same or similar parts between the embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments. In particular, for system or system embodiments, since they are basically similar to method embodiments, the description is relatively simple. For relevant parts, refer to the partial description of the method embodiment. The system and system embodiments described above are merely schematic, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. A person of ordinary skill in the art can understand and implement it without expending creative work.

[0047] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A quick-change gas diffusion electrode electrolysis module for food purification tanks, characterized in that: It comprises a housing (1), a plurality of independent electrolytic cell units (2), a first conductive sheet (31), a second conductive sheet (32), a gas transmission pipe (4), a power supply module (6), and a connecting piece (8); The first conductive sheet (31) and the second conductive sheet (32) are symmetrically arranged on the inner wall of the mounting groove opened on the front end surface of the housing (1); the power supply module (6) is arranged on the inner wall of the side surface of the housing (1); The first conductive sheet (31) and the second conductive sheet (32) are connected to the power supply module (6) via a connector (8); A plurality of independent electrolytic cell units (2) are evenly inserted into the installation slot, and the positive electrode and the negative electrode of each electrolytic cell unit (2) are connected to the first conductive sheet (31) and the second conductive sheet (32) respectively; A cavity (5) is provided on the rear end face of the housing (1), and a gas pipe (4) is installed in the cavity (5). The gas pipe (4) is connected to the interior of each independent electrolytic cell unit (2), and the gas pipe (4) is connected to an external gas source; The connecting piece (8) is electrically connected to the power supply module (6) via a connecting wire (7); The first conductive sheet (31) and the second conductive sheet (32) are connected to the positive and negative electrodes of the power supply module (6) respectively, and the first conductive sheet (31) and the second conductive sheet (32) are arranged in a U shape, wherein one end is arranged as a folding end (10), and a slot is formed on the surface of the single folding end (10), and the slot is used to insert the positive and negative electrodes of the electrolytic cell unit, and grooves matching the folding ends (10) on the first conductive sheet (31) and the second conductive sheet (32) are provided on the upper and lower inner walls of the mounting groove on the housing (1), and at the same time, card slots are provided on the two side surfaces of the mounting groove, so that the first conductive sheet (31) and the second conductive sheet (32) are plugged into the mounting groove.

2. The quick-change gas diffusion electrode electrolysis module for a food purification tank according to claim 1, characterized in that: The electrolytic cell unit (2) includes an anode conductive plate (25), a cathode conductive plate (24), a gas diffusion electrode (23), a waterproof gasket (22), and a cathode gas chamber (21) connected in sequence; The anode conductive plate (25) and the cathode conductive plate (24) are separated by a gasket; Two electrolytic cell unit air inlet pipes (9) that are interconnected are provided on the same side of the cathode gas chamber (21).

3. The quick-change gas diffusion electrode electrolysis module for a food purification tank according to claim 2, characterized in that: The upper end of the cathode conductive plate (24) and the lower end of the anode conductive plate (25) are correspondingly inserted into the slots formed by the folded ends (10) of the first conductive sheet (31) and the second conductive sheet (32), so that the electrolytic cell unit (2) is energized.

4. The quick-change gas diffusion electrode electrolysis module for a food purification tank according to claim 2, characterized in that: The gas delivery pipe (4) includes a plurality of connecting pipes (43) plugged into the electrolytic cell unit air inlet pipe (9), an air inlet main pipe (42) connected to the connecting pipes (43), an air supply pipe (41) connected to the air inlet main pipe (42), and an external air source device connected to the air supply pipe (41).

5. The quick-change gas diffusion electrode electrolysis module for a food purification tank according to claim 1, characterized in that: The connecting member (8) includes a conductive column with threads on the outer wall and a locking nut, the conductive column is fixedly connected to the connecting wire (7) on the power supply module (6), one end of the first conductive sheet (31) and the second conductive sheet (32) is provided with a slot, the conductive column is inserted into the slot and fixed by the locking nut.

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