CN219861598U

CN219861598U - Electrolytic tank

Info

Publication number: CN219861598U
Application number: CN202321354135.9U
Authority: CN
Inventors: 王丹阳; 谭伟华; 陈敏; 陈猛; 戴九松; 郭国良; 郑军妹
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: CN219861595U; CN116516377A; CN220034149U; CN220034146U; CN219861608U; CN219861596U; CN116536707A; CN219861594U; CN220352246U; CN116555793A; CN220034150U; CN219861609U; CN116516375A; CN116676636A; CN116716619A; CN116695152A; CN116607171A; CN219861601U; CN116621283A; CN116536706A

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 electrode chamber (110) in be equipped with insulating screen (4) that are located between two electrode pieces (3), set up on the inner wall of cell body (1) with this insulating screen (4) corresponding spacing groove (113), the week portion of insulating screen (4) has spacing border (42), this spacing border (42) inserts and establishes in corresponding spacing groove (113). 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 first technical problem to be solved by the utility model is to provide an electrolytic tank capable of realizing stable installation of an insulating screen aiming at the current state of the art.

The second technical problem to be solved by the utility model is to provide an electrolytic cell capable of improving the turbulence effect so as to accelerate the exhaust.

The third technical problem to be solved by the utility model is to provide an electrolytic cell capable of improving the turbulence effect so as to inhibit scale deposition.

The fourth technical problem to be solved by the utility model is to provide an electrolytic cell capable of improving the turbulence effect so as to accelerate ion transfer.

The technical scheme adopted by the utility model for solving the first technical problem 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 electrode chamber in be equipped with the insulating net that separates that is located between two electrode plates, set up the spacing groove corresponding with this insulating net that separates on the inner wall of cell body, the week portion of insulating net that separates has spacing border, this spacing border inserts and establishes in the spacing groove that corresponds.

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 further solve the second, third and fourth technical problems, the insulating spacer has a wave structure with at least one surface undulating along the length direction thereof. Thus, the directions of the meshes are different, so that water flow, ions, bubbles and the like can pass through all directions of the meshes, the ion transmission can be accelerated, and the turbulence effect is increased.

Preferably, the waveform structure is a triangular wave or a sine wave.

In order to facilitate the processing of the insulating screen, the insulating screen comprises at least two unit strips which are sequentially arranged along the length direction of the insulating screen, a plurality of meshes for fluid to pass through are formed in the unit strips, the odd unit strips are marked as first unit strips according to the arrangement direction, the even unit strips are marked as second unit strips according to the arrangement direction, the first side edge of the former first unit strip is connected with the first side edge of the latter second unit strip, the second side edge of the former second unit strip is connected with the second side edge of the latter first unit strip, and an included angle is formed between the two adjacent unit strips.

In order to ensure the turbulence effect, the orthographic projection area of all the unit strips on the diaphragm is denoted as S1, and the effective area of the diaphragm facing the insulating separation net side is denoted as S, wherein the ratio of S1 to S is more than 80%.

In order to ensure the electrolytic stability, the diaphragm and the electrode plate are fixed relative to the tank body.

In order to facilitate stable installation of the diaphragm, the groove body is formed by assembling two cover bodies, an inner cavity forming the groove body is surrounded between the two cover bodies, and the periphery of the diaphragm is clamped between two opposite end surfaces of the two cover bodies.

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 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.

In order to improve the installation stability of the insulating spacer, the limiting groove and the limiting edge are annular.

Compared with the prior art, the utility model has the advantages that: through setting up spacing border in the week portion of insulating net that separates for insert the spacing inslot of establishing at the cell body, simply realize insulating net that separates stable installation.

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 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; two annular sealing gaskets 12 which are arranged in sequence are arranged between two opposite end surfaces of the two cover bodies 11.

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, an annular limiting groove 113 corresponding to the insulating spacer 4 described below is formed in the inner wall of the cover 11.

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 has a triangular wave structure along its length. Specifically, the insulating spacer 4 is composed of at least two unit bars 41 arranged in sequence in the longitudinal direction, and each unit bar 41 is provided with a plurality of meshes 411 for passing fluid arranged in a matrix, and the porosity of the insulating spacer 4 is 50%. The odd-numbered unit bars 41 are denoted as first unit bars 41a in the arrangement direction, the even-numbered unit bars 41 are denoted as second unit bars 41b in the arrangement direction, the first side edge of the former first unit bar 41a is connected to the first side edge of the latter second unit bar 41b, the second side edge of the former second unit bar 41b is connected to the second side edge of the latter first unit bar 41a, and an included angle is formed between the two adjacent unit bars 41.

In order to facilitate stable installation of the insulating spacer 4, the peripheral portion of the insulating spacer 4 has an annular limit edge 42, and the limit edge 42 is inserted into a corresponding limit groove 113.

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; secondly, the water flow can form local micro turbulence in the process of passing through the mesh 411, so that the exhaust is accelerated, the deposition of scale is inhibited, and the ion transfer is accelerated; third, for the insulating spacer 4 of the triangular wave structure, the directions of the mesh holes 411 are different so that water flow, ions, bubbles, etc. can pass through all directions of the mesh holes 411, ion transfer can be accelerated, and turbulence effect is increased.

In this embodiment, the insulating screen 4 is made of a material (food-grade) which is resistant to high and low temperatures, strong acid and alkali and has good insulating properties, preferably food-grade teflon. The orthographic projection area of all the unit strips 41 on the diaphragm 2 is denoted as S1, and the effective area of the side of the diaphragm 2 facing the insulating barrier net 4 (i.e. the area of the insulating barrier net 4 accommodated in the inner cavity of the tank body 1) is denoted as S, and the ratio of S1 to S is greater than 80%.

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) The insulating separation net 4 is added between the diaphragm 2 and the electrode plate 3 to play a role in supporting and isolating the diaphragm 2, the insulating separation net 4 is designed into a dynamic insulating separation net with a triangular wave structure, and 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 a waterway of the electrolytic tank, and compared with the conventional method for designing an exhaust port on the electrolytic tank, the accelerated exhaust method needs an additional sealing design and other auxiliary exhaust design modes, has better exhaust effect, simpler structure and controllable cost, and is very suitable for a small-sized electrolytic tank;

(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 water outlet are proposed.

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 electrode chamber (110) in be equipped with insulating screen (4) that are located between two electrode pieces (3), set up on the inner wall of cell body (1) with this insulating screen (4) corresponding spacing groove (113), the week portion of insulating screen (4) has spacing border (42), this spacing border (42) inserts and establishes in corresponding spacing groove (113).

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: the insulating isolation net (4) has at least one surface with a wavy structure which is undulating along the length direction.

4. A cell according to claim 3, wherein: the wave structure is triangular wave or sine wave.

5. The electrolyzer of claim 4 characterized in that: the insulating screen (4) comprises at least two unit strips (41) which are sequentially arranged along the length direction of the insulating screen, a plurality of meshes (411) for fluid to pass through are formed in the unit strips (41), the odd-numbered unit strips (41) are marked as first unit strips (41 a) according to the arrangement direction, the even-numbered unit strips (41) are marked as second unit strips (41 b) according to the arrangement direction, the first side edge of the first unit strip (41 a) is connected with the first side edge of the second unit strip (41 b), the second side edge of the second unit strip (41 b) is connected with the second side edge of the first unit strip (41 a), and an included angle is formed between every two adjacent unit strips (41).

6. The electrolyzer of claim 5 characterized in that: the orthographic projection area of all the unit strips (41) on the diaphragm (2) is denoted as S1, and the effective area of the diaphragm (2) facing the insulating isolation net (4) is denoted as S, wherein the ratio of S1 to S is more than 80%.

7. An electrolysis cell according to claim 2, wherein: the diaphragm (2) and the electrode sheet (3) are fixed relative to the groove body (1).

8. The electrolyzer of claim 7 characterized in that: the groove body (1) is formed by assembling two cover bodies (11), an inner cavity of the groove body (1) is formed by surrounding the two cover bodies (11), and the periphery of the diaphragm (2) is clamped between two opposite end surfaces of the two cover bodies (11).

9. The electrolyzer of claim 7 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).

10. An electrolysis cell according to any one of claims 2 to 9, 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).

11. An electrolysis cell according to any one of claims 1 to 9, wherein: the limiting groove (113) and the limiting edge (42) are annular.