CN219861595U

CN219861595U - Electrolytic tank

Info

Publication number: CN219861595U
Application number: CN202321348560.7U
Authority: CN
Inventors: 谭伟华; 陈猛; 陈敏; 戴九松; 郑军妹; 张旭东
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2022-08-26
Filing date: 2023-05-30
Publication date: 2023-10-20
Anticipated expiration: 2033-05-30
Also published as: CN220034148U; CN219861602U; CN219861600U; CN219861601U; CN116555793A; CN219861607U; CN220034146U; CN116555830A; CN116607171A; CN219861599U; CN220351815U; CN116621283A; CN220352246U; CN219861608U; CN220703350U; CN116536707A; CN116516375A; CN219861594U; CN116516373A; CN220351816U

Abstract

The utility model discloses an electrolytic cell, which comprises a cell body (1) with an electrode chamber (110), wherein a pair of electrode plates (3) which are arranged at intervals are arranged in the electrode chamber (110), and the electrolytic cell is characterized in that: the groove body (1) is formed by assembling two cover bodies (11), an insulating separation net (4) positioned between the two electrode plates (3) is arranged in the electrode chamber (110), and the periphery of the insulating separation net (4) is limited between two opposite end surfaces of the two cover bodies (11). Compared with the prior art, the electrolytic tank can realize stable installation of the insulating screen.

Description

Electrolytic tank

Technical Field

The utility model relates to the technical field of kitchen equipment, in particular to an electrolytic tank.

Background

The electrolytic cell consists of a cell body, an anode and a cathode, and an ion exchange membrane (also called a diaphragm) is used for separating the anode chamber from the cathode chamber. The electrolyte is divided into three types, namely an aqueous solution electrolytic tank, a molten salt electrolytic tank and a nonaqueous solution electrolytic tank. When the direct current passes through the electrolytic tank, oxidation reaction occurs at the interface between the anode and the solution, and reduction reaction occurs at the interface between the cathode and the solution, so as to prepare electrolytic water.

For example, in chinese patent application No. CN201810264395.4 (publication No. CN108609693 a), a method for preparing acidic water and alkaline water is disclosed, in which salt water is electrolyzed to form cations and anions, which are moved to two poles of an electrolysis electrode respectively, hydrogen ions and highly active chlorine gas are generated from the anode, the chlorine gas is dissolved in water to generate hypochlorous acid and hydrochloric acid solution as acidic water, and hydroxide ions and hydrogen gas are generated from the cathode to form sodium hydroxide solution as alkaline water.

The following problems exist in the existing electrolytic water preparation process:

firstly, the ion exchange membrane is a unique polymer membrane containing ionic groups and having selective permeation capability to cations or anions in solution, has certain flexibility, is long in time, is influenced by air pressure and water pressure, can deform and even contacts an electrode plate to cause dry burning, influences water outlet effect and service life of an electrolytic cell, and particularly has more serious problems in a small electrolytic cell;

secondly, in the electrolysis process, a large amount of bubbles are generated on the cathode and anode plates and accumulated on the electrode plates, the ion exchange membrane and in the water path in the electrolysis tank, so that the voltage required by an electrolysis system is high, the energy consumption is high, the effective electrolysis area is reduced, the electrolysis reaction efficiency is reduced, the pH value of the effluent is low, the water path is blocked, the pH value and the voltage are extremely unstable, the air pressure can further aggravate the deformation of the ion exchange membrane in the middle, and the problems are more serious especially in a small-sized electrolysis tank;

third, OH generated by the cathode (anode) during electrolysis ^- Will be combined with Ca in water ²⁺ 、Mg ²⁺ Scale is generated by the waiting reaction and deposited on the cathode and the ion exchange membrane, which affects the electrolysis effect and the service life of the electrolytic cell;

fourth, in the electrolysis process, ions need to enter the rear of the cathode chamber from the anode chamber through the ion exchange membrane to promote the whole electrolysis reaction, but ions and products are easily accumulated around the electrode plate in the electrolysis reaction process, which is unfavorable for the diffusion and transmission of ions and the uniformity of the products, thereby affecting the electrolysis efficiency and the stability of pH.

In addition, chinese patent application No. CN202080012097.1 (publication No. CN113474492 a) discloses that the separator and the electrode sheet are separated by providing a separator between the separator and the electrode sheet, so as to avoid dry burning caused by the separator contacting the electrode sheet, and although the water flow can form local micro-turbulence in the process of passing through the mesh, the turbulence effect is limited, and it is not possible to well accelerate the exhaust, inhibit the deposition of scale and accelerate the transfer of ions, and in addition, in order to avoid the separator contacting the electrode sheet, the installation stability of the separator needs to be ensured.

Disclosure of Invention

The utility model aims to solve the technical problem of providing an electrolytic tank capable of realizing stable installation of an insulating screen aiming at the current state of the art.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides an electrolysis trough, includes the cell body that has the electrode room, be equipped with a pair of electrode slice of interval arrangement in the electrode room, its characterized in that: the groove body is formed by assembling two cover bodies, an insulating separation net positioned between two electrode plates is arranged in the electrode chamber, and the periphery of the insulating separation net is limited between two opposite end surfaces of the cover bodies.

In order to realize the partition protection effect on the diaphragm, the diaphragm is arranged in the tank body, the inner cavity of the tank body is divided into at least two electrode chambers by the diaphragm, two electrode plates are respectively arranged in the two electrode chambers, and an insulating partition net is separated between the adjacent diaphragm and the electrode plates.

In order to facilitate the installation of the diaphragm, two opposite end surfaces of the cover body are recorded as sealing surfaces, the two sealing surfaces are in sealing fit through two side-by-side annular sealing gaskets, the periphery of the diaphragm is clamped between the two annular sealing gaskets, the sealing surfaces are provided with mounting grooves communicated with corresponding electrode chambers, the periphery of the insulating separation net is accommodated in the corresponding mounting grooves and limited between the adjacent annular sealing gaskets and the inner walls of the corresponding mounting grooves.

In order to ensure the electrolytic stability, the electrode plate is fixed relative to the tank body.

In order to ensure stable installation of the electrode plate, at least two installation seats which are arranged at intervals along the circumferential direction of the electrode plate are arranged in the electrode chamber, and slots for inserting the edges of the electrode plate are formed in the installation seats.

In order to increase as much as possible the turbulence of the water flow as it passes through the mesh:

preferably, the insulating barrier has a porosity of > 1%.

Further, the porosity of the insulating spacer is 40-60%.

Preferably, the thickness of the insulating spacer is > 0.1mm.

Further, the thickness of the insulating spacer is 0.4mm.

Preferably, the insulating spacer has a plurality of openings for the passage of fluid, the openings being square openings.

Further, the side length of the square hole is 1mm.

In order to facilitate the supply of raw materials and the discharge of electrolyzed water, a liquid inlet and a liquid outlet which are communicated with the electrode chambers are arranged at the corresponding groove body parts of each electrode chamber.

Compared with the prior art, the utility model has the advantages that: the groove body is formed by assembling the two cover bodies, the two opposite end faces of the two cover bodies are recorded as sealing faces, the two sealing faces are in sealing fit through the two annular sealing gaskets which are arranged side by side, the mounting grooves which are communicated with the corresponding electrode chambers are formed in the sealing faces, the periphery of the insulating isolation net is accommodated in the corresponding mounting grooves and limited between the adjacent annular sealing gaskets and the inner walls of the corresponding mounting grooves, so that the annular sealing gaskets play a sealing role on one hand, and play a limiting role on the insulating isolation net by being matched with the mounting grooves on the other hand.

Drawings

FIG. 1 is a schematic perspective view of an embodiment of an electrolytic cell of the present utility model;

FIG. 2 is an exploded perspective view of the electrolytic cell of FIG. 1;

FIG. 3 is a schematic perspective view of the insulating spacer of FIG. 2;

FIG. 4 is a longitudinal cross-sectional view of the electrolytic cell of FIG. 1;

fig. 5 is an enlarged view of section i of fig. 4.

Detailed Description

The utility model is described in further detail below with reference to the embodiments of the drawings.

As shown in fig. 1 to 5, a first preferred embodiment of the electrolytic cell of the present utility model is shown. The electrolytic cell comprises a cell body 1, a diaphragm 2, an electrode plate 3 and an insulating separation net 4. The electrolytic cell in the embodiment is a single-diaphragm electrolytic cell, and certainly, a double-diaphragm electrolytic cell or a diaphragm-free electrolytic cell can be designed according to the requirement.

The groove body 1 is formed by assembling two cover bodies 11 back and forth through fasteners, and a closed inner cavity is formed between the two cover bodies 11 in a surrounding mode; the two opposite end faces of the two cover bodies 11 are denoted as sealing faces 113, and the two sealing faces 113 are in sealing engagement with each other by two annular gaskets 12 arranged side by side.

The diaphragm 2 is a cation exchange membrane and is vertically arranged in the inner cavity of the tank body 1, and the periphery of the diaphragm 2 is clamped between the two annular sealing gaskets 12. The number of the diaphragms 2 is one, the inner cavity of the tank body 1 is divided into two electrode chambers 110, the electrode chamber 110 between the front cover 11 and the diaphragms 2 is denoted as a cathode chamber 110a, the electrode chamber 110 between the rear cover 11 and the diaphragms 2 is denoted as an anode chamber 110b, and the lower part and the upper part of each cover 11 are respectively provided with a liquid inlet 111 and a liquid outlet 112 which are communicated with the corresponding electrode chamber 110, so that water flow in each electrode chamber 110 flows from bottom to top. Further, a mounting groove 1131 penetrating the counter electrode chamber 110 is formed at the inner peripheral position of each sealing surface 113.

The number of electrode sheets 3 is a pair, respectively designated as a cathode sheet 3a and an anode sheet 3b, the cathode sheet 3a being disposed substantially vertically in front of the cathode chamber 110a, and the anode sheet 3b being disposed substantially vertically in rear of the anode chamber 110 b. The top of each electrode sheet 3 is provided with a conductive column 31, the conductive column 31 passes through the corresponding cover 11 upwards and is exposed out of the top wall of the cover 11, and the conductive columns 31 on the cathode sheet 3a and the anode sheet 3b are respectively used for electrically connecting with the cathode and the anode of an external power supply. In addition, at least two mounting seats 13 are arranged in each electrode chamber 110 at intervals along the circumferential direction of the electrode plate 3, and slots 131 for inserting the edges of the electrode plate 3 are formed in the mounting seats 13, so that stable limiting of the electrode plate 3 is realized.

The number of the insulating barriers 4 is two, and the insulating barriers are in one-to-one correspondence with the two electrode chambers 110 and are respectively positioned in the corresponding electrode chambers 110 to separate the adjacent diaphragms 2 and the electrode plates 3.

In this embodiment, the insulating spacer 4 is in a plate shape, and a plurality of meshes 41 for fluid to pass through are formed on the surface of the insulating spacer 4; the periphery of the insulating spacer 4 is accommodated in the corresponding mounting groove 1131, and is limited between the adjacent annular sealing gasket 12 and the inner wall of the corresponding mounting groove 1131.

The insulating spacer 4 has the following functions: firstly, the insulating separation net 4 is separated between the diaphragm 2 and the electrode plate 3, so that dry burning caused by the contact of the diaphragm 2 with the electrode plate 3 can be effectively avoided; second, the water flow may form local micro turbulence during passing through the mesh openings 41, accelerating the exhaust, inhibiting scale deposition, and accelerating ion transfer.

In the embodiment, the insulating screen 4 is made of a material (food grade) with high and low temperature resistance, strong acid and alkali resistance and good insulating property, and is preferably food grade Teflon; the porosity of the insulating spacer 4 is more than 1%, preferably 50%, the thickness of the insulating spacer 4 is more than 0.1mm, preferably 0.4mm, the shape of the mesh 41 of the insulating spacer 4 is preferably square holes, and the side length of the square holes is preferably 1mm, so that micro turbulence formed when water flows through the mesh 41 is improved as much as possible.

The working principle of this embodiment is as follows: during operation, electrolyte enters the electrode chamber 110 through the liquid inlet 111, reduction reaction occurs at the interface of the cathode sheet 3a and the solution, oxidation reaction occurs at the interface of the anode sheet 3b and the solution, so as to prepare electrolyzed water, and in the electrolysis process, the first insulating partition net 4 is partitioned between the diaphragm 2 and the electrode sheet 3, so that dry burning caused by the contact of the diaphragm 2 with the electrode sheet 3 can be effectively avoided; second, the mesh 411 of the insulating spacer 4 forms a local micro turbulence, which accelerates the exhaust, suppresses scale deposition, and accelerates ion transfer.

The utility model has the following advantages:

(1) By adding the insulating separation net 4 between the diaphragm 2 and the electrode plate 3, the supporting and the partition protection of the diaphragm 2 are realized, the partial turbulence formed by meshes of the insulating separation net 4 is utilized to greatly accelerate the discharge of bubbles in the electrode plate 3, the diaphragm 2 and the water path of the electrolytic tank, and compared with the existing common method for designing an exhaust port on the electrolytic tank, the method for accelerating the discharge of bubbles has the advantages of better discharge effect, simpler structure and controllable cost, and is very suitable for a small-sized electrolytic tank in a way of needing additional sealing design and other auxiliary discharge designs;

(2) Compared with the current common positive and negative electrode switching descaling method, the method does not need a catalytic coating capable of participating in positive electrode reaction and frequent positive and negative electrode switching on the positive electrode and the negative electrode, has lower cost, simple structure, low electric control requirement and ensured service life of the electrode;

(3) The local turbulence formed by the meshes of the insulating separation net 4 is utilized to accelerate the ion diffusion and transmission, and the pH value and the stability of the discharged water are proposed;

(4) The annular sealing gasket 12 has a sealing function on one hand, and has a limiting function on the insulating spacer 4 by being matched with the mounting groove 1131 on the other hand, so that the structure is simple and the two-purpose structure is realized.

Claims

1. An electrolytic cell comprising a cell body (1) having an electrode compartment (110), the electrode compartment (110) being provided therein with a pair of spaced apart electrode pads (3), characterized in that: the groove body (1) is formed by assembling two cover bodies (11), an insulating separation net (4) positioned between the two electrode plates (3) is arranged in the electrode chamber (110), and the periphery of the insulating separation net (4) is limited between two opposite end surfaces of the two cover bodies (11).

2. The electrolyzer of claim 1 characterized in that: the novel electric energy-saving device is characterized in that a diaphragm (2) is arranged in the groove body (1), the diaphragm (2) divides the inner cavity of the groove body (1) into at least two electrode chambers (110), two electrode plates (3) are respectively arranged in the two electrode chambers (110), and an insulating separation net (4) is separated between the adjacent diaphragm (2) and the electrode plates (3).

3. An electrolysis cell according to claim 2, wherein: two the cover body (11) relative two terminal surfaces mark sealed face (113), two sealed face (113) between carry out sealing fit through two annular sealed gaskets (12) of arranging side by side, the periphery of diaphragm (2) press from both sides and establish between two annular sealed gaskets (12), sealed face (113) on be equipped with corresponding electrode room (110) mutually link up mounting groove (1131), the periphery holding of insulating separation net (4) is in corresponding mounting groove (1131), and is spacing between adjacent annular sealed gasket (12) and the inner wall of corresponding mounting groove (1131).

4. The electrolyzer of claim 1 characterized in that: the electrode plate (3) is fixed relative to the groove body (1).

5. The electrolyzer of claim 4 characterized in that: at least two mounting seats (13) which are arranged at intervals along the circumferential direction of the electrode plate (3) are arranged in the electrode chamber (110), and slots (131) for inserting the edges of the electrode plate (3) are formed in the mounting seats (13).

6. The electrolyzer of claim 1 characterized in that: the porosity of the insulating separation net (4) is more than 1 percent.

7. The electrolyzer of claim 6 characterized in that: the porosity of the insulating separation net (4) is 40-60%.

8. The electrolyzer of claim 1 characterized in that: the thickness of the insulating separation net (4) is more than 0.1mm.

9. The electrolyzer of claim 8 characterized in that: the thickness of the insulating separation net (4) is 0.4mm.

10. The electrolyzer of claim 1 characterized in that: the insulating separation net (4) is provided with a plurality of meshes (41) for fluid to pass through, and the meshes (41) are square holes.

11. An electrolysis cell according to claim 10, wherein: the side length of the square hole is 1mm.

12. An electrolysis cell according to any one of claims 1 to 10, wherein: the groove body (1) corresponding to each electrode chamber (110) is provided with a liquid inlet (111) and a liquid outlet (112) which are communicated with the electrode chamber (110).