CN220351816U

CN220351816U - Electrolytic tank

Info

Publication number: CN220351816U
Application number: CN202321344351.5U
Authority: CN
Inventors: 谭伟华; 陈猛; 陈敏; 戴九松; 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: 2024-01-16
Anticipated expiration: 2033-05-30
Also published as: CN116536706A; CN219861594U; CN220034146U; CN220352246U; CN220034149U; CN116695152A; CN116536707A; CN220034148U; CN219861607U; CN116555830A; CN116516377A; CN116516374A; CN219861595U; CN116676636A; CN219861609U; CN116555793A; CN219861597U; CN219861608U; CN116716619A; CN116621283A

Abstract

The utility model discloses an electrolytic cell, which comprises a cell body (1) with an electrode chamber (110) and an electrode sheet (3) arranged in the electrode chamber (110), and is characterized in that: the electrode chamber (110) is internally provided with a flow passage (40) which is arranged in a zigzag way. Compared with the prior art, the electrolytic tank has the advantages that the tortuous flow channels are arranged in the electrode chambers, so that the moving path of water flow in the electrolytic tank is prolonged, the water flow fully collides with the periphery of the flow channels in the tortuous flow process, the full turbulence is realized, the exhaust can be accelerated, the deposition of scale is inhibited, and the ion transfer is accelerated.

Description

Electrolytic tank

Technical Field

The utility model relates to the technical field of electrolysis equipment, in particular to an electrolysis bath.

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.

Disclosure of Invention

The first technical problem to be solved by the present utility model is to provide an electrolytic cell capable of accelerating exhaust against the current state of the art.

The second technical problem to be solved by the utility model is to provide an electrolytic tank capable of inhibiting scale deposition.

The third technical problem to be solved by the utility model is to provide an electrolytic cell capable of accelerating ion transfer.

The fourth technical problem to be solved by the utility model is to provide an electrolytic cell capable of avoiding dry burning caused by contact of a diaphragm with an electrode plate.

The technical scheme adopted by the utility model for solving the first, second and third technical problems is as follows: the utility model provides an electrolysis trough, includes the cell body that has the electrode room and locates the electrode piece in the electrode room, its characterized in that: the electrode chamber is formed with a tortuous flow passage.

In order to facilitate the formation of the flow channel, the electrode chamber is provided with a flow guiding structure which constructs the flow channel.

In order to simplify the flow guiding structure, the electrode plate is approximately rectangular, and two long sides of the electrode plate are respectively marked as a first side and a second side;

the flow guide structure comprises a plurality of flow guide strips which are arranged at intervals along the length direction of the electrode plate, each flow guide strip extends along the short side direction of the electrode plate, a flow channel unit is formed between every two adjacent flow guide strips and the inner wall of the groove body, an odd flow channel unit is marked as a first flow channel unit according to the arrangement direction, an even flow channel unit is marked as a second flow channel unit according to the arrangement direction, the first flow channel unit and the second flow channel unit are communicated with each other at a position close to the first side, the second flow channel unit and the first flow channel unit are communicated with each other at a position close to the second side, and the flow channel units jointly form the flow channel.

In order to facilitate the communication between two adjacent runner units, the flow guide strips are marked as first flow guide strips according to the arrangement direction, the even number of flow guide strips are marked as second flow guide strips according to the arrangement direction, a gap is reserved between one end of the second flow guide strip, which is close to the first side edge, and the inner wall of the groove body so as to form a first gap for communicating the former first runner unit and the latter second runner unit, and a gap is reserved between one end of the first flow guide strip, which is close to the second side edge, and the inner wall of the groove body so as to form a second gap for communicating the former second runner unit and the latter first runner unit.

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 ensure that sufficient turbulence is formed around the flow channel, the extending direction of each flow guiding strip is basically perpendicular to the connecting line of the liquid inlet and the liquid outlet.

In order to facilitate the processing of the guide strip, the following scheme is adopted:

in the first scheme, the guide strips are convexly arranged on the inner wall of the groove body.

In order to further solve the fourth technical problem, a diaphragm is disposed in the tank body, the diaphragm divides the inner cavity of the tank body into at least two electrode chambers, the number of the flow guiding structures is at least one, and at least one group of flow guiding strips of the flow guiding structures are divided between adjacent diaphragms and electrode plates.

In the second scheme, the surface of the electrode plate is convexly provided with the flow guide strip.

In the third aspect, the surface of the electrode plate is provided with the flow guide strip.

In order to further solve the fourth technical problem, a diaphragm is arranged in the tank body, the diaphragm divides the inner cavity of the tank body into at least two electrode chambers, the number of the flow guiding structures is at least one, the flow guiding strips are insulating pieces, and at least one group of the flow guiding strips of the flow guiding structures are divided between the adjacent diaphragm and the electrode plates.

In order to avoid the influence of shielding of the electrode plates on the turbulence effect, each electrode plate corresponds to two groups of flow guiding structures, and the two groups of flow guiding structures are respectively positioned at two sides of the corresponding electrode plate.

Compared with the prior art, the utility model has the advantages that:

(1) The flow channels which are arranged in a zigzag manner are arranged in the electrode chambers, so that the moving path of water flow in the electrolytic tank is prolonged, the water flow fully collides with the periphery of the flow channels in the tortuous flow process, the full turbulence is realized, the exhaust can be accelerated, the deposition of scale is inhibited, and the ion transfer is accelerated;

(2) By separating the flow guide strips of at least one group of flow guide structures between the adjacent diaphragms and the electrode plates, dry burning caused by the diaphragms contacting the electrode plates can be effectively avoided.

Drawings

FIG. 1 is a schematic perspective view of example 1 of the 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 cover in 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;

FIG. 6 is a longitudinal cross-sectional view of the cell of FIG. 1 in another direction (dashed arrows indicate the direction of flow path extension);

FIG. 7 is an exploded perspective view of example 2 of the electrolytic cell of the present utility model;

fig. 8 is a schematic perspective view of the electrode sheet of fig. 7;

FIG. 9 is a longitudinal cross-sectional view of example 2 of the electrolytic cell of the utility model;

FIG. 10 is an enlarged view of section II of FIG. 9;

FIG. 11 is a longitudinal sectional view in another direction (dotted arrow indicates the direction in which the flow path extends) of example 2 of the electrolytic cell of the present utility model.

Detailed Description

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

Example 1:

in the description and claims of the present utility model, terms indicating directions, such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", etc., are used to describe various example structural parts and elements of the present utility model, but these terms are used herein for convenience of description only and are determined based on the example orientations shown in the drawings. Because the disclosed embodiments of the utility model may be arranged in a variety of orientations, the directional terminology is used for purposes of illustration and is in no way limiting, such as "upper" and "lower" are not necessarily limited to being in a direction opposite or coincident with the direction of gravity.

As shown in fig. 1 to 6, 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 a flow guiding structure 4. The electrolytic cell in the embodiment is a single-diaphragm electrolytic cell, and certainly, the electrolytic cell can be designed into a double-diaphragm electrolytic cell 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.

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 the cathode chamber 110a, and the anode sheet 3b being disposed substantially vertically in 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 flow guiding structures 4 are arranged in the electrode chamber 110, the number of the flow guiding structures 4 is four, each electrode plate 3 corresponds to two groups of flow guiding structures 4, the two groups of flow guiding structures 4 are respectively positioned at two sides of the corresponding electrode plate 3, and each flow guiding structure 4 constructs a flow passage 40 which is arranged in a zigzag manner.

The electrode sheet 3 is approximately rectangular, and two long sides of the electrode sheet 3 are respectively marked as a first side and a second side; each group of flow guiding structures 4 comprises a plurality of flow guiding strips 41 which are arranged at intervals along the length direction of the electrode plate 3, each flow guiding strip 41 extends along the short side direction of the electrode plate and is basically perpendicular to the connecting line of the liquid inlet 111 and the liquid outlet 112, flow channel units 410 are constructed between two adjacent flow guiding strips 41 and the inner wall of the tank body 1, the odd flow channel units 410 are marked as first flow channel units 410a according to the arrangement direction, the even flow channel units 410 are marked as second flow channel units 410b according to the arrangement direction, the first flow channel units 410a and the second flow channel units 410b are communicated with each other near the first side, the second flow channel units 410b and the first flow channel units 410a are communicated with each other near the second side, and each flow channel unit 410 jointly forms the flow channel 40. Specifically, the flow guiding strips 41 are denoted as first flow guiding strips 41a in the arrangement direction, the even number of flow guiding strips 41 in the arrangement direction are denoted as second flow guiding strips 41b, a gap is formed between one end of the second flow guiding strip 41b close to the first side edge and the inner wall of the tank body 1 so as to form a first gap for communicating the previous first flow channel unit 410a with the next second flow channel unit 410b, and a gap is formed between one end of the first flow guiding strip 41a close to the second side edge and the inner wall of the tank body 1 so as to form a second gap for communicating the previous second flow channel unit 410b with the next first flow channel unit 410 a.

In this embodiment, the above-mentioned guide strips 41 are convexly disposed on the side wall inside the cover 11, each group of guide structures 4 includes 11 guide strips 41, each guide strip 41 is equidistantly disposed, the too many guide strips 41 obstruct the ion exchange channel, increase the voltage and energy consumption, and the too few guide strips cannot play a role in turbulent flow.

The above-mentioned flow guiding structure 4 has the following effects: firstly, in each electrode chamber 110, the flow guide strips 41 of one group of flow guide structures 4 are separated between the adjacent 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 flow channel 40 extends the flow path sufficiently to disturb the flow, accelerate the exhaust, suppress scale deposition, and accelerate ion transfer.

Example 2:

as shown in fig. 7 to 11, a second preferred embodiment of the electrolytic cell of the present utility model is shown. Compared with embodiment 1, this embodiment is different in that:

in this embodiment, the guide strips 41 are protruded on the surfaces of the two sides of the electrode sheet 3.

Of course, it is also possible to make the guide strip 41 of an insulating material (preferably teflon), and mount the guide strip 41 on the surface of the electrode plate 3 by means of adhesion, threaded connection, tight-fitting connection of protruding pins, etc., so that the guide strip 41 of the guide structure 4 separated between the diaphragm 2 and the electrode plate 3 can effectively avoid dry burning caused by the diaphragm 2 contacting the electrode plate 3.

Taking example 1 as an example, the working principle of this example is as follows: electrolyte enters the electrode chambers 110 through the liquid inlets 111, the cathode sheet 3a and the solution interface are subjected to reduction reaction, the anode sheet 3b and the solution interface are subjected to oxidation reaction, so that electrolyzed water is prepared, and in the electrolysis process, firstly, in each electrode chamber 110, the flow guide strips 41 of one group of flow guide structures 4 are separated between the adjacent 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 flow channel 40 extends the water flow path to sufficiently disturb the flow, so as to accelerate the exhaust, inhibit scale deposition, and accelerate ion transfer.

The utility model has the following advantages:

(1) The flow guiding structure 4 has certain supporting and isolating protection effects, prevents the diaphragm 2 from deforming and avoids dry burning;

(2) The partial turbulence formed by the diversion structure 4 is utilized to accelerate the discharge of bubbles in the electrode plate 3, the diaphragm 2 and the water channel of the electrolytic tank, reduce the bubble effect, reduce the required voltage and energy consumption, ensure the smoothness of the water channel, thereby improving the electrolysis efficiency and ensuring the stability of the whole system;

(3) The flow channel 40 is utilized to prolong the sufficient turbulence realized by the water flow moving path, so that the deposition of scale is prevented;

(4) The flow guide strips 41 form larger turbulence around, so that ion transfer and diffusion are accelerated, reaction is accelerated, electrolysis efficiency is further improved, and the acquisition of alkaline electrolyzed water with the pH reaching the standard is ensured.

Claims

1. An electrolytic cell comprising a cell body (1) with an electrode chamber (110) and an electrode sheet (3) arranged in the electrode chamber (110), characterized in that: the electrode chamber (110) is internally provided with a flow passage (40) which is arranged in a zigzag way.

2. The electrolyzer of claim 1 characterized in that: a flow guiding structure (4) is arranged in the electrode chamber (110), and the flow guiding structure (4) constructs the flow channel (40).

3. An electrolysis cell according to claim 2, wherein: the electrode plate (3) is approximately rectangular, and two long sides of the electrode plate (3) are respectively marked as a first side and a second side;

the flow guide structure (4) comprises a plurality of flow guide strips (41) which are arranged at intervals along the length direction of the electrode plate (3), each flow guide strip (41) extends along the short side direction of the electrode plate, a flow channel unit (410) is formed between two adjacent flow guide strips (41) and the inner wall of the groove body (1), an odd number of flow channel units (410) are marked as first flow channel units (410 a) according to the arrangement direction, an even number of flow channel units (410) are marked as second flow channel units (410 b) according to the arrangement direction, the first flow channel units (410 a) and the second flow channel units (410 b) are communicated with each other at the position close to the first side edge, the first second flow channel units (410 b) and the second first flow channel units (410 a) are communicated with each other at the position close to the second side edge, and the flow channel units (410) jointly form the flow channel (40).

4. A cell according to claim 3, wherein: the guide strips (41) are marked as first guide strips (41 a) according to the arrangement direction, the guide strips (41) with even number according to the arrangement direction are marked as second guide strips (41 b), a gap is formed between one end of each second guide strip (41 b) close to the first side edge and the inner wall of the groove body (1) so as to form a first gap for communicating a front first flow channel unit (410 a) and a rear second flow channel unit (410 b), and a gap is formed between one end of each first guide strip (41 a) close to the second side edge and the inner wall of the groove body (1) so as to form a second gap for communicating a front second flow channel unit (410 b) and a rear first flow channel unit (410 a).

5. A cell according to claim 3, 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).

6. The electrolyzer of claim 5 characterized in that: the extending direction of each flow guiding strip (41) is basically vertical to the connecting line of the liquid inlet (111) and the liquid outlet (112).

7. A cell according to claim 3, wherein: the inner wall of the groove body (1) is convexly provided with the guide strip (41).

8. The electrolyzer of claim 7 characterized in that: the electrode structure 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), the number of the flow guiding structures (4) is at least one group, and at least one group of flow guiding strips (41) of the flow guiding structures (4) are divided between the adjacent diaphragm (2) and the electrode plates (3).

9. A cell according to claim 3, wherein: the surface of the electrode plate (3) is convexly provided with the guide strips (41).

10. A cell according to claim 3, wherein: the surface of the electrode sheet (3) is provided with the guide strips (41).

11. An electrolysis cell according to claim 10, wherein: the electrode structure 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), the number of the flow guide structures (4) is at least one group, the flow guide strips (41) are insulating pieces, and at least one group of the flow guide strips (41) of the flow guide structures (4) are divided between the adjacent diaphragm (2) and the electrode plates (3).

12. An electrolysis cell according to any one of claims 2 to 11, wherein: each electrode plate (3) is correspondingly provided with two groups of flow guide structures (4), and the two groups of flow guide structures (4) are respectively positioned at two sides of the corresponding electrode plate (3).