A water electrolysis hydrogen production electrolysis device and method

Abstract

The present invention discloses an electrolysis device and method for producing hydrogen by water electrolysis, and relates to the technical field of producing hydrogen by water electrolysis. Among them, an electrolysis device for producing hydrogen by water electrolysis includes a hydrogen production tank and a cover plate, on which mutually symmetrical negative poles and positive poles are penetrated, and both the negative poles and the positive poles extend into the interior of the hydrogen production tank, and the inner wall of the hydrogen production tank is clamped with a baffle for spacing the negative poles and the positive poles, and there is a gap between the baffle and the inner bottom wall of the hydrogen production tank, and hydrogen exhaust pipes and oxygen exhaust pipes are respectively arranged on both sides of the top of the hydrogen production tank, and a drain pipe is arranged on one side of the bottom of the hydrogen production tank; and also includes a cleaning mechanism mounted on the hydrogen production tank and used to clean the inner wall of the hydrogen production tank. The present invention sets a baffle so that the generated hydrogen and oxygen are not easily mixed, thereby improving the purity of the hydrogen; after the hydrogen production tank is completed, the cleaning mechanism cleans the dirt on the inner side wall and the inner bottom wall of the hydrogen production tank, thereby ensuring the efficiency of subsequent hydrogen production.

Description

Technical Field

[0001] The present invention relates to the technical field of water electrolysis hydrogen production, and in particular to an electrolysis device and method for water electrolysis hydrogen production. Background Art

[0002] Water electrolysis is a relatively convenient method for producing hydrogen. Direct current is passed through an electrolytic cell filled with electrolyte, causing water molecules to undergo an electrochemical reaction at the electrodes, decomposing into hydrogen and oxygen. Existing water electrolysis hydrogen production devices have certain drawbacks. The generated hydrogen and oxygen easily mix within the electrolytic cell, making it difficult to store them in a timely manner. Furthermore, over time, the bottom of the electrolytic cell is prone to scale buildup, making it difficult to remove. This scale significantly reduces hydrogen production efficiency, increasing energy consumption.

[0003] The Chinese patent number is 202321690120.X, which discloses "a device for producing hydrogen by electrolysis of water", including a glass barrel, a glass tube; as well as a float, a convex ring, a magnet ring, a top shell, and a buzzer. By adding a liquid level reminder structure, the operator is reminded to replenish pure water in this way; and the hydrogen and oxygen produced by electrolysis are discharged through two exhaust pipes, so that the generated hydrogen and oxygen will not mix. The above-mentioned device for producing hydrogen by electrolysis of water can solve the problem of mixing of hydrogen and oxygen. Pure water is used for electrolysis, and basically no scale is produced. However, the cost of pure water is high, which is not conducive to cost saving. In the process of producing hydrogen by water electrolysis using soft water, seawater, etc., scale will be produced after a long period of electrolysis. At present, manual cleaning of scale is used, which takes up manpower and is inconvenient to clean; and the long-term accumulation of scale will affect the efficiency of subsequent hydrogen production. Summary of the Invention

[0004] The object of the present invention is to provide an electrolysis device and method for producing hydrogen by electrolysis of water, so as to solve the problem that the existing electrolysis device for producing hydrogen by electrolysis of water is prone to scale formation after long-term use, and the scale is difficult to remove, thereby affecting the subsequent hydrogen production efficiency.

[0005] The technical solution of the present invention to solve the above technical problems is as follows:

[0006] A water electrolysis hydrogen production electrolysis device includes a hydrogen production tank and a cover plate mounted on the top of the hydrogen production tank. The cover plate is provided with a negative electrode column and a positive electrode column symmetrically disposed thereon. Both the negative electrode column and the positive electrode column extend into the interior of the hydrogen production tank. A baffle for separating the negative electrode column and the positive electrode column is clamped to the inner wall of the hydrogen production tank. A gap is provided between the baffle and the inner bottom wall of the hydrogen production tank. A hydrogen exhaust pipe and an oxygen exhaust pipe are respectively disposed on both sides of the top of the hydrogen production tank. A drain pipe is disposed on one side of the bottom of the hydrogen production tank.

[0007] It also includes a cleaning mechanism which is mounted on the hydrogen production tank and is used to clean the inner wall of the hydrogen production tank.

[0008] Furthermore, the above-mentioned cleaning mechanism includes a telescopic rod arranged on the outer walls of both sides of the hydrogen production tank, a fixed rod arranged between the telescopic ends of the two telescopic rods and located above the hydrogen production tank, a driving member arranged on the top of the fixed rod, a vertical rod passing through the bottom of the fixed rod and connected to the output shaft of the driving member, and a descaling plate slidably arranged on the side wall of the vertical rod and used to clean the side wall and bottom wall of the hydrogen production tank, and the height of the descaling plate matches the internal height of the hydrogen production tank.

[0009] Furthermore, the above-mentioned cleaning mechanism also includes an inverted L-shaped rod arranged on the side wall of the vertical rod and parallel to the descaling plate, a plurality of first scrapers arranged at intervals on one side of the inverted L-shaped rod and used to clean the side edge of the descaling plate, and a second scraper arranged at the bottom end of the other side of the inverted L-shaped rod and used to clean the bottom edge of the descaling plate. Both the first scraper and the second scraper are in contact with the outer wall of the descaling plate, and the inner bottom wall of the hydrogen production tank is provided with a semicircular protrusion corresponding to the descaling plate.

[0010] Furthermore, a chute that slides with the descaling plate is formed on the side wall of the vertical rod, and a return spring is connected between the top side wall of the chute and the top of the descaling plate.

[0011] Furthermore, at least one group of the above-mentioned descaling plates is provided, and the number of the inverted L-shaped rods corresponds to the number of the descaling plates.

[0012] Furthermore, a plurality of stirring components are provided on the inverted L-shaped rod, and the stirring components are located between adjacent first scrapers.

[0013] Furthermore, the above-mentioned stirring assembly includes a fixed shaft arranged on one side of the inverted L-shaped rod and parallel to the first scraper, and a friction wheel rotatably arranged on the fixed shaft, the friction wheel is in friction contact with the outer wall of the descaling plate, and a plurality of stirring blades are annularly arranged on the side of the friction wheel away from the inverted L-shaped rod.

[0014] The present invention also provides a method for using a water electrolysis hydrogen production electrolysis device, comprising the following steps:

[0015] S1. Transport water into the hydrogen production tank. When the water level reaches the required level, cover the tank with the cover plate, connect the hydrogen exhaust pipe to the external hydrogen storage device, and connect the oxygen exhaust pipe to the external oxygen storage device.

[0016] S2. The negative electrode and the positive electrode are connected to the power supply, and the water in the hydrogen production tank undergoes an electrolysis reaction to produce hydrogen and oxygen. The negative electrode and the positive electrode are separated by the baffle, and the generated hydrogen and oxygen are separated. The hydrogen enters the external hydrogen storage device through the hydrogen exhaust pipe, and the oxygen enters the external oxygen storage device through the oxygen exhaust pipe;

[0017] S3. After hydrogen production is completed, turn off the power supply of the negative and positive poles. After the temperature inside the hydrogen production tank returns to room temperature, remove the cover and the baffle inside the hydrogen production tank.

[0018] S4. Adjust the height of the cleaning mechanism and use it to clean the inner wall of the hydrogen production tank. The liquid after cleaning is discharged from the drain pipe, and then the cleaning mechanism is driven to reset.

[0019] Furthermore, the above step S4 includes the following steps:

[0020] S401, adjusting the height of the fixed rod by the telescopic rod, and making the descaling plate contact the inner side wall and inner bottom wall of the hydrogen production tank, further adding water to the hydrogen production tank, and making the water level line be below the hydrogen exhaust pipe and the oxygen exhaust pipe;

[0021] S402, starting the driving member, which drives the descaling plate to rotate via the vertical rod, and the rotating descaling plate scrapes away dirt and the like on the inner wall of the hydrogen production tank;

[0022] S403, when the descaling plate contacts the semicircular protrusion, the descaling plate slides upward along the vertical rod, and the first scraper and the second scraper on the inverted L-shaped rod scrape the dirt adhered to the side and bottom edges of the descaling plate;

[0023] S404: When the descaling plate slides upward along the vertical rod, it drives the friction wheel to rotate, and the friction wheel drives the stirring blades to stir the scraped dirt.

[0024] The present invention has the following beneficial effects:

[0025] 1. The water electrolysis hydrogen production electrolysis device of the present invention separates the negative electrode column and the positive electrode column by a baffle. The generated hydrogen is transported to an external hydrogen storage device through a hydrogen exhaust pipe, and oxygen is transported to an external oxygen storage device through an oxygen exhaust pipe. The generated hydrogen and oxygen are not easily mixed, thereby improving the purity of the hydrogen. After the hydrogen production tank is completed, the cleaning mechanism can clean the dirt on the inner side wall and inner bottom wall of the hydrogen production tank, thereby ensuring the efficiency of subsequent hydrogen production.

[0026] 2. The cleaning mechanism of the present invention adjusts the height of the fixed rod through the telescopic rod, and then adjusts the height of the vertical rod, the descaling plate, and the inverted L-shaped rod below the fixed rod, so as to facilitate the scraping of dirt on the inner wall of the hydrogen production tank; the vertical rod is driven to rotate by the driving member, and the vertical rod drives the descaling plate to rotate and scrape the dirt on the inner wall of the hydrogen production tank.

[0027] 3. The cleaning mechanism of the present invention is that when the descaling plate contacts the semicircular protrusion on the bottom wall of the hydrogen production tank, the descaling plate will slide upward along the vertical rod, and then the first scraper and the second scraper on the inverted L-shaped rod will scrape off the dirt adhered to the side and bottom edges of the descaling plate. When the descaling plate is no longer in contact with the semicircular protrusion, the descaling plate is driven to reset under the action of the reset spring, and the descaling plate continues to clean the dirt on the inner wall of the hydrogen production tank.

[0028] 4. The present invention provides a stirring assembly. When the descaling plate moves upward, it will further drive the friction wheel on the inverted L-shaped rod to rotate. The friction wheel drives the stirring blade to rotate, which can stir the dirt scraped by the first scraper, reducing the probability of dirt adhering to the outer wall of the descaling plate for the second time. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 Schematic diagram of the structure of the electrolysis device for producing hydrogen by water electrolysis;

[0030] Figure 2 It is a structural diagram of the hydrogen production tank and the cover plate;

[0031] Figure 3 It is a cross-sectional structural diagram of the hydrogen production tank and the cover plate;

[0032] Figure 4 It is a structural diagram of the cleaning mechanism and hydrogen production tank;

[0033] Figure 5 It is a structural diagram of the cleaning mechanism;

[0034] Figure 6 for Figure 5 A schematic diagram of the enlarged structure at point A;

[0035] Figure 7 It is a schematic diagram of the cross-sectional structure of the vertical rod and the descaling plate.

[0036] In the figure: 1. Hydrogen production tank; 11. Baffle; 12. Hydrogen exhaust pipe; 13. Oxygen exhaust pipe; 14. Drain pipe; 15. Semicircular protrusion; 2. Cover plate; 3. Negative pole; 4. Positive pole; 5. Cleaning mechanism; 51. Telescopic rod; 52. Fixed rod; 53. Drive member; 54. Vertical rod; 541. Slide groove; 542. Return spring; 55. Descaling plate; 56. Inverted L-shaped rod; 57. First scraper; 58. Second scraper; 6. Stirring assembly; 61. Fixed shaft; 62. Friction wheel; 63. Stirring blade. DETAILED DESCRIPTION

[0037] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0038] like Figures 1 to 3As shown, an embodiment of the present invention provides an electrolytic device for producing hydrogen by electrolysis of water, comprising a hydrogen production tank 1, a cover plate 2 installed on the top of the hydrogen production tank 1, the cover plate 2 being provided with a negative electrode column 3 and a positive electrode column 4 symmetrical to each other, the cover plate 2 being provided with a mounting opening for installing the negative electrode column 3 and the positive electrode column 4, the negative electrode column 3 and the positive electrode column 4 both extending into the interior of the hydrogen production tank 1; a baffle 11 for spacing the negative electrode column 3 and the positive electrode column 4 is clamped on the inner wall of the hydrogen production tank 1, a card groove matching the baffle 11 is axially provided on both sides of the inner wall of the hydrogen production tank 1, a sealing ring is further provided between the baffle 11 and the inner wall of the card groove, and a gap is provided between the baffle 11 and the inner bottom wall of the hydrogen production tank 1, the baffle 11 is used to separate the negative electrode column 3 and the positive electrode column 4. A hydrogen exhaust pipe 12 and an oxygen exhaust pipe 13 are respectively provided on both sides of the top of the hydrogen production tank 1, and the hydrogen exhaust pipe 12 and the oxygen exhaust pipe 13 are symmetrical to each other. The hydrogen exhaust pipe 12 is located on the side close to the negative electrode column 3, and the oxygen exhaust pipe 13 is located on the side close to the positive electrode column 4. A drain pipe 14 is provided on the bottom side of the hydrogen production tank 1; after the negative electrode column 3 and the positive electrode column 4 are connected to the power supply, the generated hydrogen is transported from the hydrogen exhaust pipe 12 to the external hydrogen storage device, and the oxygen is transported from the oxygen exhaust pipe 13 to the external oxygen storage device. The generated hydrogen and oxygen are not easily mixed, thereby improving the purity of the hydrogen.

[0039] The system also includes a cleaning mechanism 5 mounted on the hydrogen production tank 1 and used to clean the inner wall of the hydrogen production tank 1. During the hydrogen production process, scale will be generated in the hydrogen production tank 1 after a long period of electrolysis. The cleaning mechanism 5 cleans the inner wall of the hydrogen production tank 1, reducing labor costs and ensuring subsequent hydrogen production efficiency.

[0040] like Figure 1 、 Figure 4 、 Figure 7As shown, the cleaning mechanism 5 includes a telescopic rod 51 arranged on the outer walls of both sides of the hydrogen production tank 1. The telescopic rod 51 adopts an existing electric telescopic rod, which is fixed to the outer wall of the hydrogen production tank 1 by bolts, so as to facilitate the overall disassembly and maintenance of the cleaning mechanism 5; a fixed rod 52 arranged between the telescopic ends of the two telescopic rods 51 and located above the hydrogen production tank 1, a driving member 53 arranged on the top of the fixed rod 52, the driving member 53 adopts a motor, which is fixed to the top center position of the fixed rod 52 by bolts, and a through hole matching the vertical rod 54 is opened in the middle of the fixed rod 52, a vertical rod 54 is arranged at the bottom of the fixed rod 52 and is connected to the output shaft of the driving member 53, the top of the vertical rod 54 passes through the through hole on the fixed rod 52 and is connected to the output shaft of the driving member 53, and a descaling plate 55 is slidably arranged on the side wall of the vertical rod 54 and used to clean the side wall and bottom wall of the hydrogen production tank 1, and the height of the descaling plate 55 matches the internal height of the hydrogen production tank 1. Specifically, the sidewall of the vertical rod 54 is provided with a chute 541 that slidably engages with the descaling plate 55. The chute 541 extends along the length of the vertical rod 54 and is arranged in a T-shaped manner. A T-shaped slider that matches the T-shaped chute is fixed to the side of the descaling plate 55 near the vertical rod 54. The length of the T-shaped slider is equal to the length of the descaling plate 55, ensuring that the descaling plate 55 slides along the length of the vertical rod 54 and prevents it from moving along the width direction during use, which would affect the descaling effect. A return spring 542 is connected between the top sidewall of the chute 541 and the top of the descaling plate 55. In this embodiment, the hydrogen production tank 1 has a cylindrical structure, and the length of the bottom side of the descaling plate 55 is equal to the radius inside the hydrogen production tank 1.

[0041] When the hydrogen production tank 1 has finished producing hydrogen and the inner wall of the hydrogen production tank 1 needs to be cleaned, when the temperature inside the hydrogen production tank 1 drops to room temperature, remove the cover plate 2 and the baffle 11, start the telescopic rod 51, and adjust the height of the vertical rod 54 and the descaling plate 55, so that the side of the descaling plate 55 contacts the inner wall of the hydrogen production tank 1, and the bottom edge of the descaling plate 55 contacts the inner bottom wall of the hydrogen production tank 1, start the driving member 53, and the driving member 53 drives the vertical rod 54 to rotate, and then drives the descaling plate 55 to rotate through the vertical rod 54. When the descaling plate 55 rotates, it will scrape off the dirt on the inner wall and inner bottom wall of the hydrogen production tank 1, so as to facilitate cleaning of the dirt inside the hydrogen production tank 1.

[0042] like Figure 5 and Figure 6As shown, the cleaning mechanism 5 further includes an inverted L-shaped rod 56 arranged on the side wall of the vertical rod 54 and parallel to the descaling plate 55, with a gap between the bottom of the inverted L-shaped rod 56 and the inner bottom wall of the hydrogen production tank 1; a plurality of first scrapers 57 arranged at intervals on one side of the inverted L-shaped rod 56 and used to clean the side of the descaling plate 55, all of the first scrapers 57 are evenly spaced, and a second scraper 57 is arranged at the bottom end of the other side of the inverted L-shaped rod 56 and used to clean the bottom edge of the descaling plate 55. 8; Specifically, the first scraper 57 is located near the scraping side of the descaling plate 55, and the first scraper 57 is perpendicular to the inverted L-shaped rod 56. The second scraper 58 is located away from the scraping side of the descaling plate 55 and is perpendicular to the bottom end side wall of the inverted L-shaped rod 56. The first scraper 57 and the second scraper 58 are both in contact with the outer wall of the descaling plate 55; the inner bottom wall of the hydrogen production tank 1 is provided with a semicircular protrusion 15 corresponding to the descaling plate 55, and the semicircular protrusion 15 coincides with the movement trajectory of the descaling plate 55. In this embodiment, at least one group of descaling plates 55 is provided, and the number of inverted L-shaped rods 56 corresponds to the number of descaling plates 55. In other embodiments of the present invention, the descaling plates 55 can be provided in two groups, four groups, etc., and are evenly spaced annularly on the side wall of the vertical rod 54; the semicircular protrusions 15 can be provided in two, three, etc., and are evenly spaced on the inner bottom wall of the hydrogen production tank 1.

[0043] When the descaling plate 55 contacts the semicircular protrusion 15 on the inner bottom wall of the hydrogen production tank 1, the descaling plate 55 will slide upward along the slide groove 541 of the vertical rod 54. At this time, the return spring 542 is compressed. Since the first scraper 57 and the second scraper 58 are both in contact with the descaling plate 55, the first scraper 57 and the second scraper 58 can scrape off the dirt adhered to the side and bottom edges of the descaling plate 55; when the descaling plate 55 is no longer in contact with the semicircular protrusion 15, it is reset under the action of the return spring 542 and continues to scrape off the dirt on the inner wall of the hydrogen production tank 1.

[0044] like Figure 6 As shown, a plurality of stirring assemblies 6 are provided on the inverted L-shaped rod 56, and the stirring assemblies 6 are located between adjacent first scrapers 57. The stirring assemblies 6 are used to stir the dirt scraped by the first scrapers 57, thereby reducing the probability of the dirt adhering to the outer wall of the descaling plate 55 for the second time.

[0045] Specifically, the stirring assembly 6 includes a fixed shaft 61 disposed on one side of the inverted L-shaped rod 56 and parallel to the first scraper 57, and a friction wheel 62 rotatably mounted on the fixed shaft 61. A shaft hole is provided at the center of the friction wheel 62 for rotatably engaging with the fixed shaft 61. The friction wheel 62 is in frictional contact with the outer wall of the descaling plate 55. A plurality of stirring blades 63 are annularly disposed on the side of the friction wheel 62 away from the inverted L-shaped rod 56. When the descaling plate 55 slides upward along the vertical rod 54, the friction wheel 62 on the inverted L-shaped rod 56 is simultaneously driven to rotate. The rotation of the friction wheel 62 drives the stirring blades 63 to rotate. The stirring blades 63 then stir the dirt scraped by the first scraper 57, so that the dirt scraped by the first scraper 57 can be stirred by the stirring assembly 6, reducing the probability of the dirt adhering to the outer wall of the descaling plate 55 again. In this embodiment, in order to facilitate stirring of the dirt scraped by the second scraper 58, a group of stirring components 6 are also provided on the other side of the inverted L-shaped rod 56 and close to the second scraper 58, so as to further stir the dirt scraped by the second scraper 58.

[0046] Another embodiment of the present invention further provides a method for using a water electrolysis hydrogen production electrolysis device, comprising the following steps:

[0047] S1. Water is transported into the hydrogen production tank 1. When the water level reaches the required level, the cover plate 2 is closed, and the hydrogen exhaust pipe 12 is connected to the external hydrogen storage device, and the oxygen exhaust pipe 13 is connected to the external oxygen storage device. At this time, the negative electrode column 3 and the positive electrode column 4 are both extended into the hydrogen production tank 1.

[0048] S2, the negative electrode column 3 and the positive electrode column 4 are powered on, the water in the hydrogen production tank 1 undergoes an electrolysis reaction to produce hydrogen and oxygen, and the negative electrode column 3 and the positive electrode column 4 are separated by the baffle 11, and the generated hydrogen and oxygen are separated, and the hydrogen enters the external hydrogen storage device through the hydrogen exhaust pipe 12, and the oxygen enters the external oxygen storage device through the oxygen exhaust pipe 13;

[0049] S3. After hydrogen production is completed, turn off the power supply of the negative electrode column 3 and the positive electrode column 4. After the temperature in the hydrogen production tank 1 returns to room temperature, remove the cover plate 2 and the baffle 11 in the hydrogen production tank 1.

[0050] S4. Adjust the height of the cleaning mechanism 5 and clean the inner wall of the hydrogen production tank 1 through the cleaning mechanism 5. The liquid after cleaning is discharged from the drain pipe 14, and then the cleaning mechanism 5 is driven to reset.

[0051] The specific cleaning process is as follows:

[0052] S401, adjust the height of the fixed rod 52 by the telescopic rod 51, and make the descaling plate 55 contact the inner side wall and inner bottom wall of the hydrogen production tank 1, further add water to the hydrogen production tank 1, and make the water level line be below the hydrogen exhaust pipe 12 and the oxygen exhaust pipe 13;

[0053] S402, starting the driving member 53, which drives the descaling plate 55 to rotate via the vertical rod 54, so that the rotating descaling plate 55 scrapes away dirt and the like on the inner wall of the hydrogen production tank 1;

[0054] S403, when the descaling plate 55 contacts the semicircular protrusion 15, the descaling plate 55 slides upward along the vertical rod 54, and the first scraper 57 and the second scraper 58 on the inverted L-shaped rod 56 scrape the dirt adhered to the side and bottom edges of the descaling plate 55;

[0055] S404. When the descaling plate 55 slides upward along the vertical rod 54, it drives the friction wheel 62 to rotate, and the friction wheel 62 drives the stirring blades 63 to stir the scraped dirt, thereby reducing the probability of secondary adhesion of the dirt.

[0056] When the cleaning mechanism 5 has finished cleaning the hydrogen production tank 1, the drain pipe 14 is opened to drain the sewage. After it is completely drained, the drain pipe 14 is closed again. The fixed rod 52 is driven to rise by the telescopic rod 51 until the descaling plate 55 extends to the outside of the hydrogen production tank 1. The cover plate 2 is then covered for the next use.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A water electrolysis hydrogen production electrolysis device, comprising a hydrogen production tank (1), and a cover plate (2) mounted on the top of the hydrogen production tank (1), characterized in that: The cover plate (2) is provided with a negative electrode column (3) and a positive electrode column (4) symmetrical to each other, the negative electrode column (3) and the positive electrode column (4) both extend into the interior of the hydrogen production tank (1), the inner wall of the hydrogen production tank (1) is clamped with a baffle (11) for spacing the negative electrode column (3) and the positive electrode column (4), a gap is provided between the baffle (11) and the inner bottom wall of the hydrogen production tank (1), a hydrogen exhaust pipe (12) and an oxygen exhaust pipe (13) are respectively provided on both sides of the top of the hydrogen production tank (1), and a drain pipe (14) is provided on one side of the bottom of the hydrogen production tank (1); It also includes a cleaning mechanism (5) mounted on the hydrogen production tank (1) and used for cleaning the inner wall of the hydrogen production tank (1); The cleaning mechanism (5) comprises telescopic rods (51) arranged on the outer walls of both sides of the hydrogen production tank (1), a fixed rod (52) arranged between the telescopic ends of the two telescopic rods (51) and located above the hydrogen production tank (1), a driving member (53) arranged on the top of the fixed rod (52), a vertical rod (54) passing through the bottom of the fixed rod (52) and connected to the output shaft of the driving member (53), and a descaling plate (55) slidably arranged on the side wall of the vertical rod (54) and used to clean the side wall and bottom wall of the hydrogen production tank (1), wherein the height of the descaling plate (55) matches the internal height of the hydrogen production tank (1); The cleaning mechanism (5) further comprises an inverted L-shaped rod (56) arranged on the side wall of the vertical rod (54) and parallel to the descaling plate (55), a plurality of first scrapers (57) arranged at intervals on one side of the inverted L-shaped rod (56) and used to clean the side edge of the descaling plate (55), and a second scraper (58) arranged at the bottom end of the other side of the inverted L-shaped rod (56) and used to clean the bottom edge of the descaling plate (55), the first scraper (57) and the second scraper (58) both being in contact with the outer wall of the descaling plate (55), and the inner bottom wall of the hydrogen production tank (1) being provided with a semicircular protrusion (15) corresponding to the descaling plate (55); A sliding groove (541) is provided on the side wall of the vertical rod (54) for slidingly cooperating with the descaling plate (55), and the sliding groove (541) is provided along the length direction of the vertical rod (54), and a return spring (542) is connected between the top side wall of the sliding groove (541) and the top of the descaling plate (55).

2. The water electrolysis hydrogen production electrolysis device according to claim 1, characterized in that: At least one group of the descaling plates (55) is provided, and the number of the inverted L-shaped rods (56) corresponds to the number of the descaling plates (55).

3. The water electrolysis hydrogen production electrolysis device according to claim 1, characterized in that: A plurality of stirring assemblies (6) are provided on the inverted L-shaped rod (56), and the stirring assemblies (6) are located between adjacent first scrapers (57).

4. The water electrolysis hydrogen production electrolysis device according to claim 3, characterized in that: The stirring assembly (6) comprises a fixed shaft (61) arranged on one side of the inverted L-shaped rod (56) and parallel to the first scraper (57), and a friction wheel (62) rotatably arranged on the fixed shaft (61), the friction wheel (62) being in frictional contact with the outer wall of the descaling plate (55), and a plurality of stirring blades (63) being arranged in an annular shape on one side of the friction wheel (62) away from the inverted L-shaped rod (56).

5. A method for using the water electrolysis hydrogen production electrolysis device according to any one of claims 1 to 4, characterized in that: The following steps are involved: S1, transporting water into the hydrogen production tank (1), and when the water level reaches the required level, closing the cover plate (2), and connecting the hydrogen exhaust pipe (12) to an external hydrogen storage device, and connecting the oxygen exhaust pipe (13) to an external oxygen storage device; S2, the negative electrode column (3) and the positive electrode column (4) are connected to a power source, the water in the hydrogen production tank (1) undergoes an electrolysis reaction to generate hydrogen and oxygen, the negative electrode column (3) and the positive electrode column (4) are separated by the baffle (11), and the generated hydrogen and oxygen are separated, the hydrogen enters an external hydrogen storage device through a hydrogen exhaust pipe (12), and the oxygen enters an external oxygen storage device through an oxygen exhaust pipe (13); S3. After hydrogen production is completed, turn off the power supply of the negative electrode column (3) and the positive electrode column (4), wait until the temperature in the hydrogen production tank (1) approaches room temperature, remove the cover plate (2), and remove the baffle plate (11) in the hydrogen production tank (1); S4. Adjust the height of the cleaning mechanism (5), and use the cleaning mechanism (5) to clean the inner wall of the hydrogen production tank (1). After cleaning, the liquid is discharged from the drain pipe (14), and then the cleaning mechanism (5) is driven to reset.

6. The method for using the water electrolysis hydrogen production electrolysis device according to claim 5, characterized in that: Step S4 includes the following steps: S401, adjusting the height of the fixed rod (52) by means of the telescopic rod (51), and making the descaling plate (55) contact the inner side wall and the inner bottom wall of the hydrogen production tank (1), further adding water into the hydrogen production tank (1), and making the water level line be located below the hydrogen exhaust pipe (12) and the oxygen exhaust pipe (13); S402, starting the driving member (53), the driving member (53) drives the descaling plate (55) to rotate via the vertical rod (54), and the rotating descaling plate (55) scrapes away dirt on the inner wall of the hydrogen production tank (1); S403, when the descaling plate (55) contacts the semicircular protrusion (15), the descaling plate (55) slides upward along the vertical rod (54), and the first scraper (57) and the second scraper (58) on the inverted L-shaped rod (56) scrape the dirt adhered to the side and bottom edges of the descaling plate (55); S404: When the descaling plate (55) slides upward along the vertical rod (54), it simultaneously drives the friction wheel (62) to rotate, and the friction wheel (62) drives the stirring blade (63) to stir the scraped dirt.

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