Water electrolysis hydrogen production device

Abstract

The invention relates to the technical field of electrolytic hydrogen production, in particular to a water electrolysis hydrogen production device which comprises an electrolysis tank and further comprises an electrolysis assembly, the electrolysis assembly comprises a first electrode plate and a second electrode plate which are arranged in the electrolysis tank, and a diaphragm is arranged between the first electrode plate and the second electrode plate; the auxiliary cleaning assembly comprises two cleaning frames installed in the electrolysis tank in a sliding mode, the cleaning frames slide up and down in the electrolysis tank in a reciprocating mode, and through holes are formed in the cleaning frames; a recycling assembly is arranged at the bottom of the electrolysis tank, and attachments are concentrated to the recycling assembly when the cleaning frame moves downwards. The cleaning frame is slidably arranged in the electrolysis tank, the filter screen is rotatably arranged on the cleaning frame, crystals generated in the electrolysis tank are concentrated to the bottom according to different sliding directions of the cleaning frame, the crystals are periodically discharged out of the electrolysis tank through the recovery assembly, and meanwhile reciprocating sliding power of the cleaning frame comes from airflow generated by electrolysis. And internal self-cleaning is completed at low cost, and meanwhile the electrolytic hydrogen production efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of hydrogen electrolysis technology, and more specifically to a hydrogen production device for water electrolysis. Background Technology

[0002] Hydrogen production by water electrolysis is a technology that uses direct current to drive water molecules to undergo oxidation-reduction reactions at electrodes, converting electrical energy into the chemical energy of hydrogen. This technology has various process pathways depending on the electrolyte type, including alkaline electrolysis, proton exchange membrane electrolysis, and solid oxide electrolysis, with conversion efficiencies reaching 75%-85%.

[0003] In existing water electrolysis hydrogen production processes, when using alkaline electrolyzed water (such as sodium hydroxide or potassium hydroxide), if water is consumed, causing the solution concentration to increase and exceed the solubility, the electrolyte itself may crystallize. For example, a 20% sodium hydroxide solution may crystallize during electrolysis due to water loss. If the electrolyte contains divalent cations such as calcium and magnesium, they may combine with hydroxide ions to form insoluble substances, such as magnesium hydroxide or calcium carbonate, forming scale-like deposits. As the amount of crystallization increases, it will affect the normal electrolysis hydrogen production process. Summary of the Invention

[0004] To address the aforementioned shortcomings of existing technologies, this invention provides an electrolytic water hydrogen production device that effectively solves the problem of crystallization precipitation affecting hydrogen production efficiency during the electrolysis process in existing technologies.

[0005] To achieve the above objectives, the present invention provides the following technical solution: This invention provides a water electrolysis hydrogen production device, including an electrolysis tank, and further comprising: An electrolysis assembly includes a first electrode plate and a second electrode plate disposed in an electrolysis tank, with a diaphragm provided between the first electrode plate and the second electrode plate. An auxiliary cleaning assembly for scraping off deposits on the first electrode plate, the second electrode plate, and the diaphragm includes two cleaning racks slidably installed in an electrolytic tank. Each cleaning rack is orifice-shaped and slides up and down in the electrolytic tank. Each cleaning rack has a through hole. When the cleaning rack moves upward, the through hole opens, and when the cleaning rack moves downward, the through hole closes. The bottom of the electrolysis tank is equipped with a recycling component. When the cleaning rack moves down, it collects the attached material at the recycling component and discharges it from the electrolysis tank through the recycling component.

[0006] Furthermore, a cover plate is installed on the top of the electrolytic box, and the first electrode plate, the second electrode plate, and the diaphragm are all installed on the bottom wall of the cover plate. A connecting assembly is installed between the cover plate and the electrolytic box.

[0007] Furthermore, the top of the cover plate has two air outlets, one of which is equipped with a first air box and the other with a second air box. Multiple first air boxes are connected to a first air outlet pipe, and multiple second air boxes are connected to a second air outlet pipe. An inlet pipe and an outlet pipe are respectively connected to one side of the electrolysis tank.

[0008] Furthermore, the auxiliary cleaning assembly also includes a filter screen rotatably mounted on the bottom wall of the cleaning frame. The filter screen is located directly below the through hole, and the size of the filter screen is larger than the through hole. A guide slope is provided on the side wall of the through hole.

[0009] Furthermore, a first hinge is provided on the bottom wall of the cleaning frame, the filter screen is rotatably mounted on the first hinge, and a float is provided on the side of the filter screen away from the first hinge.

[0010] Furthermore, the recycling assembly includes a collection rack installed on the bottom wall of the electrolysis tank, the collection rack having a discharge hole that penetrates the bottom wall of the electrolysis tank, and a recycling box connected to the bottom of the discharge hole.

[0011] Furthermore, a second hinge is fixedly installed on the top of the discharge hole, and a baffle is rotatably installed on the second hinge. A push rod for pushing the baffle to rotate is fixedly installed on the bottom wall of the cleaning frame, and a rotating groove is provided on the collection frame.

[0012] Furthermore, a trapezoidal frame is fixedly installed on the inner bottom wall of the electrolysis tank, and two collection racks are located on both sides of the trapezoidal frame, with the top of the trapezoidal frame fixedly connected to the bottom of the diaphragm.

[0013] Furthermore, a transmission box is fixedly installed on one side of the electrolysis box, a transmission plate is slidably installed in the transmission box, and the transmission plate and the cleaning frame are fixedly connected. The transmission plate has a threaded hole, and a reciprocating screw adapted to the threaded hole is rotatably installed in the transmission box.

[0014] Furthermore, the top end of the reciprocating screw rotates sequentially through the transmission box and the outer wall of the second air outlet pipe. A fan wheel is fixedly installed on the top end of the reciprocating screw, and the airflow in the second air outlet pipe drives the fan wheel.

[0015] The technical solution provided by this invention has the following advantages compared with the known prior art: By sliding a cleaning rack in the electrolysis tank and rotating a filter screen on the cleaning rack, the crystals generated in the electrolysis tank are concentrated to the bottom according to the different sliding directions of the cleaning rack, and periodically discharged to the outside of the electrolysis tank by the recycling component. At the same time, the reciprocating sliding power of the cleaning rack comes from the airflow generated by electrolysis itself, which achieves internal self-cleaning at low cost and improves the efficiency of hydrogen production by electrolysis. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0017] Figure 1 This is an overall schematic diagram of the present invention; Figure 2 This is a schematic diagram of the structure of the first electrode plate and the second electrode plate. Figure 3 for Figure 2 Enlarged view of the structure of part A in the middle; Figure 4 This is a schematic diagram of the second vent pipe section; Figure 5 This is a structural diagram of the cleaning rack section; Figure 6 A schematic diagram illustrating the movement of the cleaning rack and filter screen; Figure 7 This is a schematic diagram of the internal structure of an electrolysis tank; Figure 8 for Figure 7 Enlarged view of the structure of part B in the middle section.

[0018] The labels in the diagram represent: 1. Electrolysis tank; 2. Cover plate; 3. First electrode plate; 4. Second electrode plate; 5. Diaphragm; 6. First gas box; 7. Second gas box; 8. Cleaning rack; 9. Transmission plate; 10. Reciprocating screw; 11. First gas outlet pipe; 12. Second gas outlet pipe; 13. Liquid inlet pipe; 14. Liquid outlet pipe; 15. Fan wheel; 16. Through hole; 17. First hinge; 18. Filter screen; 19. Float; 20. Push rod; 21. Trapezoidal frame; 22. Collection rack; 23. Discharge hole; 24. Baffle; 25. Rotating groove; 26. Transmission box; 27. Guide slope. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0020] The present invention will be further described below with reference to embodiments.

[0021] Example 1: refer to Figure 1 An electrolytic water hydrogen production device includes an electrolytic tank 1 and an electrolysis assembly, including a first electrode plate 3 and a second electrode plate 4 disposed in the electrolytic tank 1. A diaphragm 5 is provided between the first electrode plate 3 and the second electrode plate 4. A cover plate 2 is installed on the top of the electrolytic tank 1. The first electrode plate 3, the second electrode plate 4, and the diaphragm 5 are all installed on the bottom wall of the cover plate 2. A connecting assembly is installed between the cover plate 2 and the electrolytic tank 1. Two gas outlets are opened on the top of the cover plate 2. A first gas box 6 is provided at one gas outlet, and a second gas box 7 is provided at the other gas outlet. Multiple first gas boxes 6 are connected to a first gas outlet pipe 11, and multiple second gas boxes 7 are connected to a second gas outlet pipe 12. An inlet pipe 13 and an outlet pipe 14 are respectively connected to one side of the electrolytic tank 1.

[0022] Hydrogen is produced from the raw material solution inside the electrolyzer 1 using a first electrode plate 3, a second electrode plate 4, and a diaphragm 5 (proton exchange membrane). Hydrogen and oxygen are generated during the process, and are discharged through a first outlet pipe 11 and a second outlet pipe 12, respectively. Additionally, an inlet pipe 13 and an outlet pipe 14 are provided on one side of the electrolyzer 1 to ensure a stable internal solution volume. The first electrode plate 4, the second electrode plate 4, and the diaphragm 5 are all mounted on a cover plate 2. A connecting assembly is provided between the cover plate 2 and the electrolyzer 1. This assembly is mainly used for the assembly and disassembly of the cover plate 2 and the electrolyzer 1. The specific structure can be adjusted according to actual conditions; for example, bolt connections or snap-fit ​​connections are acceptable.

[0023] Example 2: refer to Figure 2To ensure a high efficiency in the electrolysis process within the electrolytic tank 1, an auxiliary cleaning assembly is installed inside the electrolytic tank 1 to scrape off deposits from the first electrode plate 3, the second electrode plate 4, and the diaphragm 5. This assembly includes two cleaning racks 8 slidably mounted within the electrolytic tank 1. Each cleaning rack 8 is orifice-shaped and slides up and down within the electrolytic tank 1. Each cleaning rack 8 has a through hole 16; when the cleaning rack 8 moves upward, the through hole 16 opens, and when the cleaning rack 8 moves downward, the through hole 16 closes. The auxiliary cleaning assembly also includes a filter screen 18 rotatably mounted on the bottom wall of the cleaning rack 8. The filter screen 18 is located directly below the through hole 16, and its size is larger than the through hole 16. A guide slope 27 is provided on the wall, and a first hinge 17 is provided on the bottom wall of the cleaning frame 8. The filter screen 18 is rotatably installed on the first hinge 17. A float 19 is provided on the side of the filter screen 18 away from the first hinge 17. A transmission box 26 is fixedly installed on one side of the electrolysis box 1. A transmission plate 9 is slidably installed in the transmission box 26, and the transmission plate 9 and the cleaning frame 8 are fixedly connected. A threaded hole is provided on the transmission plate 9, and a reciprocating screw 10 adapted to the threaded hole is rotatably installed in the transmission box 26. The top end of the reciprocating screw 10 rotates through the outer wall of the transmission box 26 and the second air outlet pipe 12 in sequence. A fan wheel 15 is fixedly installed on the top end of the reciprocating screw 10. The airflow in the second air outlet pipe 12 drives the fan wheel 15.

[0024] like Figure 2 and Figure 3 As shown, a cleaning rack 8 is slidably arranged in the electrolysis tank 1. Two cleaning racks 8 are close together on one side to clean the outer wall of the diaphragm 5. The cleaning rack 8 is orifice-shaped, and the inner wall of the cleaning rack 8 is in full contact with the outer walls of both sides of the electrode plate. The inner wall of the through hole 16 is inclined (as shown). Figure 5 As shown, the scraped-off deposits are guided by the guide slope 27 to enter the filter screen 18, making it easier to collect the accumulated deposits below the filter screen 18 later.

[0025] Specifically, when cleaning rack 8 is moved upwards, such as Figure 6 As shown, the filter screen 18 flips downward under the impact of the water flow, thus opening the through hole 16. The solution above the filter screen 18 can pass through the through hole 16, and the solution, along with the attached substances, gathers below the filter screen 18. When the cleaning rack 8 moves downward, under the impact of the float 19 and the water flow, the filter screen 18 flips upward and sticks tightly to the bottom wall of the cleaning rack 8. In this way, the solution needs to be filtered by the filter screen 18 before it can pass through the through hole, thus filtering out the attached substances. This process is repeated to concentrate the attached substances below the filter screen 18.

[0026] The electrolytic tank 1 is equipped with a recycling component at its bottom. When the cleaning rack 8 moves down, it collects the attached material at the recycling component and discharges it from the electrolytic tank 1 through the recycling component. The recycling component includes a collection rack 22 installed on the inner bottom wall of the electrolytic tank 1. The collection rack 22 has a discharge hole 23 that penetrates the bottom wall of the electrolytic tank 1. The bottom of the discharge hole 23 is connected to a recycling box. A second hinge is fixedly installed on the top of the discharge hole 23, and a baffle 24 is rotatably installed on the second hinge. A push rod 20 for pushing the baffle 24 to rotate is fixedly installed on the bottom wall of the cleaning rack 8. The collection rack 22 is provided with a rotating groove 25. A trapezoidal frame 21 is fixedly installed on the inner bottom wall of the electrolytic tank 1. Two collection racks 22 are located on both sides of the trapezoidal frame 21, and the top of the trapezoidal frame 21 is fixedly connected to the bottom of the diaphragm 5.

[0027] To further enhance the cleaning effect, a recycling component was installed at the bottom of electrolysis tank 1, such as... Figure 7 and Figure 8 As shown, a collection rack 22 is set at the bottom of the electrolysis tank 1. As the cleaning rack 8 moves down, the collected deposits and crystals are pressed to the bottom of the electrolysis tank 1. A push rod 20 is set at the bottom of the cleaning rack 8. The push rod 20 presses one end of the baffle 24, which will cause the baffle 24 to rotate and open the discharge hole 23. At this time, some of the internal solution will flow out. This solution can just discharge the collected crystals and the cleaned deposits together from the electrolysis tank 1. A recycling box can be connected to the outside. A cloth bag is set inside the recycling box to complete the final collection of crystals and deposits.

[0028] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A hydrogen production apparatus for electrolysis of water, comprising an electrolysis tank, characterized by, Also include: Electrolytic assembly, comprising a first electrode plate and a second electrode plate arranged in the electrolytic tank, a diaphragm is arranged between the first electrode plate and the second electrode plate; The auxiliary cleaning assembly is used for scraping the attachments on the first electrode plate, the second electrode plate and the diaphragm, comprising two cleaning racks slidingly installed in the electrolytic tank, each of the cleaning racks is in the shape of a mouth, and the cleaning racks reciprocate up and down in the electrolytic tank, a through hole is formed in the cleaning rack, the through hole is opened when the cleaning rack moves up, and the through hole is closed when the cleaning rack moves down. Wherein, the bottom of the electrolytic tank is provided with a recovery assembly, the attachments are concentrated to the recovery assembly when the cleaning rack moves down, and are discharged from the electrolytic tank through the recovery assembly.

2. The water electrolysis hydrogen generation device according to claim 1, characterized in that, The top of the electrolytic tank is provided with a cover plate, the first electrode plate, the second electrode plate and the diaphragm are installed on the bottom wall of the cover plate, and a connecting assembly is installed between the cover plate and the electrolytic tank.

3. The water electrolysis hydrogen generation device according to claim 2, characterized in that, Two gas outlets are formed in the top of the cover plate, one of the gas outlets is provided with a first gas tank, and the other of the gas outlets is provided with a second gas tank, a plurality of first gas tanks are connected with a first gas outlet pipe, a plurality of second gas tanks are connected with a second gas outlet pipe, and a liquid inlet pipe and a liquid outlet pipe are connected to one side of the electrolytic tank.

4. The water electrolysis hydrogen generation device according to claim 1, characterized in that, The auxiliary cleaning assembly further comprises a filter screen rotatably installed on the bottom wall of the cleaning rack, the filter screen is located directly below the through hole, and the size of the filter screen is greater than that of the through hole, a guide slope is formed on the side wall of the through hole.

5. The water electrolysis hydrogen generation device according to claim 4, characterized in that, A first hinge is arranged on the bottom wall of the cleaning rack, the filter screen is rotatably installed on the first hinge, and a float is arranged on the side of the filter screen away from the first hinge.

6. The water electrolysis hydrogen generation device according to claim 5, characterized in that, The recovery assembly comprises a collecting rack installed on the inner bottom wall of the electrolytic tank, a discharge hole is formed in the collecting rack, the discharge hole penetrates the bottom wall of the electrolytic tank, and a recovery tank is arranged outside the bottom of the discharge hole.

7. The water electrolysis hydrogen generation device according to claim 6, characterized in that, A second hinge is fixedly installed on the top of the discharge hole, a baffle is rotatably installed on the second hinge, a push rod for pushing the baffle to rotate is fixedly installed on the bottom wall of the cleaning rack, and a rotating groove is arranged on the collecting rack.

8. The water electrolysis hydrogen generation device according to claim 6, characterized in that, A trapezoidal frame is fixedly installed on the inner bottom wall of the electrolytic tank, two collecting racks are arranged on both sides of the trapezoidal frame, and the top end of the trapezoidal frame is fixedly connected with the bottom end of the diaphragm.

9. The water electrolysis hydrogen generation device according to claim 1, characterized in that, A transmission box is fixedly installed on one side of the electrolytic tank, a transmission plate is slidingly installed in the transmission box, and the transmission plate and the cleaning rack are fixedly connected, a threaded hole is formed in the transmission plate, and a reciprocating screw rod matched with the threaded hole is rotatably installed in the transmission box.

10. The water electrolysis hydrogen generation device according to claim 9, characterized in that, The top end of the reciprocating screw rod rotatably penetrates the outer wall of the transmission box and the second gas outlet pipe in sequence, a wind wheel is fixedly installed on the top end of the reciprocating screw rod, and the airflow in the second gas outlet pipe drives the wind wheel.

Images