A hydrogen purification device for producing hydrogen by electrolysis of water

Abstract

The present invention relates to the technical field of hydrogen purification equipment, and specifically refers to a hydrogen purification device for producing hydrogen by electrolysis of water, which includes a base, a hydrogen purifier is detachably mounted on one end of the base, a circular groove is provided on the other end of the base, an intermittent rotating tray is provided in the circular groove, an intermittent rotating bracket embedded in the circular groove is provided below the intermittent rotating tray, an intermittent rotating mechanism fixedly connected to the bottom of the intermittent rotating tray is provided in the intermittent rotating bracket, four evenly distributed detachable hydrogen collection tanks are provided on the intermittent rotating tray, a connecting frame matching the circular groove is provided on one end of the base, and ventilation switches matching the connecting frame are provided in the four hydrogen collection tanks. A hydrogen purification device for producing hydrogen by electrolysis of water of the present invention has an automatically closed hydrogen storage device, which avoids a complicated disassembly process, can greatly increase the replacement speed of hydrogen storage tanks, and improve production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of hydrogen purification equipment, and in particular to a hydrogen purification device for producing hydrogen by electrolyzing water. Background Art

[0002] Water electrolysis is one of the common methods for producing hydrogen. Water electrolysis is the process of decomposing water into hydrogen and oxygen by passing electricity through the water. In an electrolytic cell, a DC power supply is used to connect the positive electrode to the hydrogen atoms in the water and the negative electrode to the oxygen atoms in the water. When electricity is applied, the hydrogen atoms in the water will accept electrons and be reduced to hydrogen, while the oxygen atoms in the water will release electrons and oxidize to oxygen. In addition to oxygen, there are some impurities and other gases in the electrolysis process;

[0003] Therefore, hydrogen purification equipment is required in the process of producing hydrogen by electrolysis of water. The commonly used equipment is hydrogen membrane separator. Hydrogen membrane separator is a membrane separation technology based on the difference in gas permeability. It separates impurity gases from hydrogen through a polymer membrane with high selective permeability to achieve the purpose of hydrogen purification.

[0004] The existing hydrogen purification devices mostly purify hydrogen through the hydrogen purification device and then transport the hydrogen to the hydrogen storage tank. Since the process of hydrogen production by electrolysis of water cannot be interrupted and a complex connecting device with a sealing structure is required between the hydrogen purification device and the hydrogen storage tank, a large amount of hydrogen will leak when replaced, and the replacement time is long, resulting in waste and delaying production efficiency. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a hydrogen purification device for producing hydrogen by electrolysis of water, which has an automatically closed hydrogen storage device, avoids the complicated disassembly process, can greatly increase the replacement speed of the hydrogen storage tank, and improve production efficiency.

[0006] In order to solve the above technical problems, the technical solution provided by the present invention is as follows: a hydrogen purification device for producing hydrogen by electrolyzing water, comprising a base, a hydrogen purifier being detachably mounted on one end of the base, a special-shaped fixing frame being arranged at the bottom of the hydrogen purifier, a special-shaped fixing groove being arranged on the base and matching with the special-shaped fixing frame, a circular groove being arranged at the other end of the base, an intermittent rotating tray being arranged in the circular groove, an intermittent rotating bracket being arranged below the intermittent rotating tray and an intermittent rotating mechanism being fixedly connected with the bottom of the intermittent rotating tray being arranged in the intermittent rotating bracket, four evenly distributed and detachably mounted hydrogen collecting tanks being arranged on the intermittent rotating tray, a connecting frame matching with the circular groove being arranged at one end of the base, a connecting pipeline being arranged between the connecting frame and the hydrogen purifier, and ventilation switches matching with the connecting frame being arranged in the four hydrogen collecting tanks.

[0007] As an improvement, the intermittent rotating bracket includes a cylindrical frame body, a drive device mounting groove is provided in the cylindrical frame body, four evenly distributed first through grooves are provided on the inner wall of the drive device mounting groove, and a first annular limiting groove is provided in the drive device mounting groove above the first through groove.

[0008] As an improvement, the intermittent rotation mechanism includes a turntable that cooperates with the mounting groove of the driving device, and spring dampers are fixedly connected in the four first through grooves, and the four spring dampers are provided with trapezoidal blocks near one end of the turntable, and a triangular slot that cooperates with the trapezoidal block is provided on the edge of the turntable. A rotating shaft is rotatably connected to the bottom center of the turntable, and a bracket that cooperates with the trapezoidal block and is slidably connected to the turntable is fixedly connected to the rotating shaft, a first fixed column is fixedly connected to the bottom side of one end of the bracket, and a second fixed column is fixedly connected to the lower end of the turntable, a first spring is fixedly connected between the first fixed column and the second fixed column, and the rotating shaft is fixedly connected to a driving motor.

[0009] As an improvement, the thickness of the trapezoidal block is greater than or equal to the sum of the thickness of the turntable and the thickness of the bracket, and the angle between the second fixing column to the rotation axis section and the bracket is greater than ninety degrees.

[0010] As an improvement, the intermittent rotating tray includes a tray fixedly connected to the top of the turntable, the bottom of the tray is provided with an annular limiting slide rail matching with the first annular limiting groove, and the tray is provided with four gas tank mounting grooves matching with the hydrogen collection tank.

[0011] As an improvement, the connecting frame includes a circular frame body, a second annular limit groove is provided on the outer side of the circular frame body, a first through hole is provided in the second annular limit groove, an annular slide rail is provided in the circular frame body, a convex slide rail communicating with the first through hole is provided in the annular slide rail, and the first through hole is located at the upper dead point of the convex slide rail.

[0012] As an improvement, the hydrogen collection tank includes a tank body, a handle is provided on the top of the tank body, a limit groove is provided on one side of the tank body for the ventilation switch to move up and down, the height of the limit groove is matched with the second annular limit groove and the convex slide rail, and the inside of the tank body is provided with limit plates located at both ends of the limit groove, an arc-shaped limit plate is fixedly connected between the two limit plates, and a second through hole is provided on the arc-shaped limit plate, and the second through hole is horizontal with the top of the limit groove.

[0013] As an improvement, the ventilation switch includes a sliding shell that can slide up and down between the two limit plates, the sliding shell is provided with an arc-shaped cavity that cooperates with the arc-shaped limit plate, the outer side of the sliding shell is provided with an air inlet pipe that communicates with the arc-shaped cavity, the inner side of the sliding shell is provided with an air outlet pipe that communicates with the arc-shaped cavity, a mounting plate fixedly connected to the inner side of the sliding shell is provided above the air outlet pipe, a second spring is fixedly connected between the mounting plate and the limit plate located above, the air inlet pipe is rotatably connected to a hollow roller that cooperates with the second annular limit groove and the convex slide rail at one end away from the arc-shaped cavity, and limit blocks that cooperate with the limit plates are provided at both ends of the sliding shell.

[0014] As an improvement, the circular frame is provided with three evenly distributed second through grooves which are in communication with the second annular limiting groove.

[0015] After adopting the above structure, the present invention has the following advantages:

[0016] 1. An intermittent rotating mechanism is provided, and through the cooperation between the triangular card slot, the trapezoidal card block, the spring damper, the bracket, the first fixed column, the second fixed column and the first spring, the intermittent rotating mechanism can drive the intermittent rotating tray to perform intermittent rotating motion, so that the four detachable hydrogen collection tanks can be automatically replaced after filling, thereby avoiding waste in the hydrogen manufacturing process;

[0017] 2. Through the coordination among the convex slide rail, the annular slide rail, the convex slide rail, the first through hole, the second through hole and the ventilation switch, the ventilation switch can move up and down under the restriction of the convex slide rail and the annular slide rail, thereby automatically realizing the automatic opening and closing of the hydrogen collection tank. Compared with the traditional connection structure, the replacement speed is faster, and the efficiency is greatly improved while ensuring the sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an orthogonal side view of a hydrogen purification device for producing hydrogen by electrolyzing water according to the present invention.

[0019] Figure 2 It is an orthogonal side view of a portion of a hydrogen purification device for producing hydrogen by electrolyzing water according to the present invention.

[0020] Figure 3 The invention discloses an orthogonal side view of an intermittent rotating mechanism of a hydrogen purification device for producing hydrogen by electrolyzing water.

[0021] Figure 4 The present invention is a bottom view of an intermittent rotating mechanism of a hydrogen purification device for producing hydrogen by electrolyzing water.

[0022] Figure 5 The invention discloses an orthogonal side view of a connecting frame of a hydrogen purification device for producing hydrogen by electrolyzing water.

[0023] Figure 6 The present invention is a top view of a connecting frame of a hydrogen purification device for producing hydrogen by electrolyzing water.

[0024] Figure 7 It is a cross-sectional view along the AA direction of a connecting frame of a hydrogen purification device for producing hydrogen by electrolyzing water according to the present invention.

[0025] Figure 8 It is one of the orthogonal side sectional views of a hydrogen collecting tank of a hydrogen purification device for producing hydrogen by electrolyzing water according to the present invention.

[0026] Fig. 9 This is the second orthogonal side sectional view of a hydrogen collecting tank of a hydrogen purification device for producing hydrogen by electrolyzing water according to the present invention.

[0027] Fig.10 The present invention is an orthogonal side view of a vent switch of a hydrogen purification device for producing hydrogen by electrolyzing water.

[0028] As shown in the figure: 1. Base; 2. Round groove; 3. Special-shaped fixing groove; 4. Special-shaped fixing frame; 5. Hydrogen purifier; 6. Intermittent rotating tray; 601. Tray; 602. Gas tank installation groove; 603. Annular limiting slide rail; 7. Connecting pipeline; 9. Connecting frame; 901. Round frame; 902. Second annular limiting groove; 903. Annular slide rail; 904. Convex slide rail; 905. First through hole; 906. Second through groove; 10. Hydrogen collecting tank; 1001. Tank body; 1002. Handle; 1003. Limiting groove; 1004. Arc limiting plate; 1005. Second through hole; 1006. Limiting plate; 11. Intermittent rotating mechanism; 1101. Turntable; 1 102, triangular slot; 1103, trapezoidal block; 1104, spring damper; 1105, rotating shaft; 1106, driving motor; 1107, bracket; 1108, second fixed column; 1109, first spring; 1110, first fixed column; 12, intermittent rotating bracket; 1201, cylindrical frame; 1202, driving device mounting groove; 1203, first annular limiting groove; 1204, first through groove; 13, ventilation switch; 1301, sliding shell; 1302, arc-shaped cavity; 1303, air outlet pipe; 1304, air inlet pipe; 1305, hollow roller; 1306, mounting plate; 1307, second spring; 1308, limiting block. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0030] Combined with Figure 1A hydrogen purification device for producing hydrogen by electrolysis of water comprises a base 1, a hydrogen purifier 5 is detachably mounted on one end of the base 1, a special-shaped fixing frame 4 is provided at the bottom of the hydrogen purifier 5, and a special-shaped fixing groove 3 matching with the special-shaped fixing frame 4 is provided on the base 1. The hydrogen purifier 5 uses membrane separation technology, and the hydrogen purifier 5 is connected to the water electrolysis hydrogen generator through an air pipe. This is a prior art, so it is not described in detail here. The special-shaped fixing frame 4 and the special-shaped fixing groove 3 play a better fixing role.

[0031] Combined with Figure 1 and attached Figure 2 , a circular groove 2 is provided on the other end of the base 1, and an intermittent rotating tray 6 is provided in the circular groove 2. The intermittent rotating tray 6 includes a tray 601 fixedly connected to the top of the turntable 1101, and an annular limiting slide rail 603 matching the first annular limiting groove 1203 is provided at the bottom of the tray 601. Four gas tank mounting grooves 602 matching the hydrogen collection tank 10 are provided on the tray 601. An intermittent rotating bracket 12 embedded in the circular groove 2 is provided below the intermittent rotating tray 6. The intermittent rotating bracket 12 includes a cylindrical frame 1201, and a drive device mounting groove 1202 is provided in the cylindrical frame 1201. Four evenly distributed first through grooves 1204 are provided on the inner wall of the drive device mounting groove 1202, and a first annular limiting groove 1203 located above the first through groove 1204 is provided in the drive device mounting groove 1202.

[0032] This structure ensures that the tray 601 can rotate smoothly in the cylindrical frame 1201 after the intermittent rotating mechanism 11 provides driving force, thereby ensuring stability.

[0033] Combined with Figure 2 , Attachment Figure 3 and attached Figure 4The intermittent rotating bracket 12 is provided with an intermittent rotating mechanism 11 fixedly connected to the bottom of the intermittent rotating tray 6, and the intermittent rotating mechanism 11 includes a turntable 1101 matched with the driving device mounting groove 1202, and the four first through grooves 1204 are fixedly connected with spring dampers 1104, and the four spring dampers 1104 are provided with a trapezoidal block 1103 near one end of the turntable 1101, and the edge of the turntable 1101 is provided with a triangular slot 1102 matched with the trapezoidal block 1103, and the turntable The bottom center of 1101 is rotatably connected with a rotating shaft 1105, and a bracket 1107 that is slidably connected to the rotating disk 1101 and matches the trapezoidal block 1103 is fixedly connected to the rotating shaft 1105. A first fixing column 1110 is fixedly connected to the bottom side of one end of the bracket 1107, and a second fixing column 1108 is fixedly connected to the lower end of the rotating disk 1101. A first spring 1109 is fixedly connected between the first fixing column 1110 and the second fixing column 1108, and a driving motor 1106 is fixedly connected to the rotating shaft 1105. The thickness of the trapezoidal block 1103 is greater than or equal to the sum of the thickness of the rotating disk 1101 and the thickness of the bracket 1107, and the angle between the line segment from the second fixing column 1108 to the rotating shaft 1105 and the bracket 1107 is greater than ninety degrees.

[0034] Through this structure, the driving motor 1106 drives the rotating shaft 1105 to rotate clockwise. Figure 2 and attached Figure 4 , the bracket 1107 rotates with the rotating shaft 1105. At this time, due to the mutual engagement of the trapezoidal block 1103 and the triangular slot 1102, the turntable 1101 does not rotate, so that the distance between the first fixed column 1110 and the second fixed column 1108 becomes longer as the bracket 1107 rotates clockwise, thereby causing the first spring 1109 to stretch and accumulate force. When the bracket 1107 rotates to the trapezoidal block 1103 that is mutually engaged with the triangular slot 1102, the trapezoidal block 1103 is squeezed by the bracket 1107, and the trapezoidal block 1103 enters the first through groove 1204 and disengages from the triangular slot 1102. At this time, the turntable 1101 rotates rapidly clockwise under the action of the first spring 1109, and the triangular slot 1102 is then engaged with the next trapezoidal block 1103 in the clockwise direction, thereby causing the intermittent rotating tray 6 to intermittently rotate.

[0035] Combined with Figure 1 , Attachment Figure 8 and attached Fig. 9The intermittent rotating tray 6 is provided with four evenly distributed detachable hydrogen collecting tanks 10, the hydrogen collecting tank 10 includes a tank body 1001, a handle 1002 is provided on the top of the tank body 1001, a limiting groove 1003 is provided on one side of the tank body 1001 for the ventilation switch 13 to move up and down, the height of the limiting groove 1003 is matched with the annular slide rail 903 and the convex slide rail 904, and the tank body 1001 is provided with limiting plates 1006 located at both ends of the limiting groove 1003, an arc-shaped limiting plate 1004 is fixedly connected between the two limiting plates 1006, and a second through hole 1005 is provided on the arc-shaped limiting plate 1004, and the second through hole 1005 is level with the top of the limiting groove 1003.

[0036] By providing the arc-shaped limiting plate 1004, the second through hole 1005 and the limiting plate 1006, on the one hand, the ventilation switch 13 can slide up and down and limit the movement range of the ventilation switch 13, and on the other hand, the sealing is ensured and the structure is simple.

[0037] Combined with Figure 5 , Attachment Figure 6 and attached Figure 7 The base 1 has a connecting frame 9 matched with the circular groove 2 at one end, and the connecting frame 9 includes a circular frame body 901, and the circular frame body 901 has a second annular limiting groove 902 on the outside, and the second annular limiting groove 902 has a first through hole 905, and the circular frame body 901 has an annular slide rail 903, and the annular slide rail 903 has a convex slide rail 904 in communication with the first through hole 905, and the first through hole 905 is located at the upper dead point of the convex slide rail 904. The circular frame body 901 is provided with three evenly distributed second through grooves 906 in communication with the second annular limiting groove 902.

[0038] By providing the annular slide rail 903 and the convex slide rail 904 , the movement trajectory of the ventilation switch 13 is limited, and the ventilation switch 13 can move up and down along the annular slide rail 903 and the convex slide rail 904 .

[0039] Combined with Figure 8 , Attachment Fig. 9 and attached Fig.10A connecting pipe 7 is provided between the connecting frame 9 and the hydrogen purifier 5, and a ventilation switch 13 matching with the connecting frame 9 is provided in the four hydrogen collecting tanks 10. The ventilation switch 13 includes a sliding housing 1301 that can slide up and down between the two limiting plates 1006, and an arc-shaped cavity 1302 matching with the arc-shaped limiting plate 1004 is provided in the sliding housing 1301, an air inlet pipe 1304 communicating with the arc-shaped cavity 1302 is provided on the outside of the sliding housing 1301, and an air outlet pipe 1303 communicating with the arc-shaped cavity 1302 is provided on the inside of the sliding housing 1301, and a gas outlet pipe 1303 on the outlet pipe 1303 is provided. A mounting plate 1306 fixedly connected to the inner side of the sliding shell 1301 is provided, and a second spring 1307 is fixedly connected between the mounting plate 1306 and the limiting plate 1006 located above. The air inlet pipe 1304 is rotatably connected to one end away from the arc-shaped cavity 1302, and a hollow roller 1305 cooperating with the annular slide rail 903 and the convex slide rail 904 is provided. Limiting blocks 1308 cooperating with the limiting plate 1006 are provided at both ends of the sliding shell 1301.

[0040] Through this structure, the sliding housing 1301 is sleeved on the arc-shaped limit plate 1004, and the limit plates 1006 at the upper and lower ends enable the sliding housing 1301 to move up and down on the arc-shaped limit plate 1004 between the limit plates 1006. Through the second spring 1307 between the mounting plate 1306 and the limit plate 1006, the sliding housing 1301 is always at the lower dead point between the limit plates 1006 without external force, so that the air intake pipe 1304 is at the lower dead point of the limit groove 1003, and the lower dead point of the limit groove 1003 is at the same level as the annular slide rail 903. flat line, at this time, hydrogen cannot enter the tank body 1001, and the tank body 1001 is in a closed state. By providing a hollow roller 1305, the friction between the air inlet pipe 1304 and the annular slide rail 903 and the convex slide rail 904 is reduced. When the hollow roller 1305 moves to the upper dead center of the convex slide rail 904, at this time, the air inlet pipe 1304 and the second through hole 1005 and the first through hole 905 are on the same axis. At this time, hydrogen can enter the tank body 1001. By providing a handle 1002 and a second through groove 906, the filled tank body 1001 can be quickly taken out.

[0041] In the specific implementation of the present invention, the hydrogen purifier 5 is connected to the hydrogen generating device. This is a prior art, so it is not described here. After the hydrogen is purified by the hydrogen purifier 5, it enters the air inlet pipe 1304 through the connecting pipeline 7, the first through hole 905 and the hollow roller 1305. At this time, the air inlet pipe 1304, the air outlet pipe 1303 and the second through hole 1005 are on the same axis, and the hydrogen can smoothly enter the tank body 1001, thereby realizing the filling of purified hydrogen;

[0042] When one of the hydrogen collection tanks 10 is filled, the drive motor 1106 is started, and the drive motor 1106 drives the rotating shaft 1105 and the bracket 1107 to rotate. During the rotation, the distance between the first fixing column 1110 and the second fixing column 1108 gradually increases, causing the first spring 1109 to continuously stretch and accumulate force. When the bracket 1107 squeezes the triangular slot 1102 into the first through slot 1204, the turntable 1101 rotates rapidly under the action of the first spring 1109, and then the triangular slot 1102 and the corresponding The adjacent trapezoidal blocks 1103 are mutually locked, and at the same time, the adjacent hydrogen collection tanks 10 on the tray 601 rotate with the tray 601, and the ventilation switch 13 in the filled hydrogen collection tank 10 moves from the upper dead center to the lower dead center along the convex slide rail 904. At this time, the hollow roller 1305 drives the sliding shell 1301 to move downward, so that the inlet pipe 1304 and the outlet pipe 1303 are separated from the second through hole 1005, and the arc-shaped limit plate 1004 blocks the hydrogen delivery path, thereby realizing the closure of the hydrogen collection tank 10;

[0043] The filled hydrogen collecting tank 10 can be pulled out upwards by the handle 1002 , and the second through slot 906 can be used to smoothly realize the disassembly.

[0044] The present invention and its implementation methods are described above, and such description is not restrictive, and the actual structure is not limited thereto. In general, if a person skilled in the art is inspired by it, and does not deviate from the purpose of the invention, and does not creatively design a structure and implementation method similar to the technical solution, they should all fall within the protection scope of the present invention.

Claims

1. A hydrogen purification device for producing hydrogen by electrolysis of water, comprising a base (1), a hydrogen purifier (5) being detachably mounted on one end of the base (1), a special-shaped fixing frame (4) being provided at the bottom of the hydrogen purifier (5), and a special-shaped fixing groove (3) matching with the special-shaped fixing frame (4) being provided on the base (1), characterized in that: A circular groove (2) is provided on the other end of the base (1), an intermittent rotating tray (6) is provided in the circular groove (2), an intermittent rotating bracket (12) embedded in the circular groove (2) is provided below the intermittent rotating tray (6), an intermittent rotating mechanism (11) fixedly connected to the bottom of the intermittent rotating tray (6) is provided in the intermittent rotating bracket (12), four evenly distributed and detachable hydrogen collecting tanks (10) are provided on the intermittent rotating tray (6), a connecting frame (9) matched with the circular groove (2) is provided on one end of the base (1), a connecting pipeline (7) is provided between the connecting frame (9) and the hydrogen purifier (5), and ventilation switches (13) matched with the connecting frame (9) are provided in the four hydrogen collecting tanks (10).

2. A hydrogen purification device for producing hydrogen by electrolysis of water according to claim 1, characterized in that: The intermittent rotating bracket (12) comprises a cylindrical frame body (1201), a driving device installation groove (1202) is provided in the cylindrical frame body (1201), four evenly distributed first through grooves (1204) are provided on the inner wall of the driving device installation groove (1202), and a first annular limiting groove (1203) located above the first through groove (1204) is provided in the driving device installation groove (1202).

3. A hydrogen purification device for producing hydrogen by electrolysis of water according to claim 2, characterized in that: The intermittent rotating mechanism (11) comprises a rotating disk (1101) matched with a driving device mounting groove (1202); spring dampers (1104) are fixedly connected in four of the first through grooves (1204); a trapezoidal clamping block (1103) is provided at one end of the four spring dampers (1104) close to the rotating disk (1101); a triangular clamping groove (1102) matched with the trapezoidal clamping block (1103) is provided at the edge of the rotating disk (1101); and a rotating shaft (1105) is rotatably connected to the center of the bottom of the rotating disk (1101). The rotating shaft (1105) is fixedly connected with a bracket (1107) which is slidably connected to the rotating disk (1101) and cooperates with the trapezoidal block (1103); a first fixed column (1110) is fixedly connected to the bottom side of one end of the bracket (1107); a second fixed column (1108) is fixedly connected to the lower end of the rotating disk (1101); a first spring (1109) is fixedly connected between the first fixed column (1110) and the second fixed column (1108); and the rotating shaft (1105) is fixedly connected with a driving motor (1106).

4. A hydrogen purification device for producing hydrogen by electrolysis of water according to claim 3, characterized in that: The thickness of the trapezoidal block (1103) is greater than or equal to the sum of the thickness of the turntable (1101) and the thickness of the bracket (1107), and the angle between the line segment from the second fixing column (1108) to the rotating shaft (1105) and the bracket (1107) is greater than ninety degrees.

5. A hydrogen purification device for producing hydrogen by electrolysis of water according to claim 3, characterized in that: The intermittent rotating tray (6) comprises a tray (601) fixedly connected to the top of the turntable (1101), an annular limiting slide rail (603) matching with the first annular limiting groove (1203) is provided at the bottom of the tray (601), and four gas tank mounting grooves (602) matching with the hydrogen collection tank (10) are provided on the tray (601).

6. A hydrogen purification device for producing hydrogen by electrolysis of water according to claim 1, characterized in that: The connecting frame (9) comprises a circular frame body (901), a second annular limiting groove (902) is provided on the outer side of the circular frame body (901), a first through hole (905) is provided in the second annular limiting groove (902), an annular slide rail (903) is provided in the circular frame body (901), a convex slide rail (904) communicating with the first through hole (905) is provided in the annular slide rail (903), and the first through hole (905) is located at the upper dead point of the convex slide rail (904).

7. A hydrogen purification device for producing hydrogen by electrolysis of water according to claim 6, characterized in that: The hydrogen collection tank (10) comprises a tank body (1001), a handle (1002) is provided on the top of the tank body (1001), a limiting groove (1003) is provided on one side of the tank body (1001) for the ventilation switch (13) to move up and down, the height of the limiting groove (1003) matches the second annular limiting groove (902) and the convex slide rail (904), limiting plates (1006) are provided at both ends of the limiting groove (1003) inside the tank body (1001), an arc-shaped limiting plate (1004) is fixedly connected between the two limiting plates (1006), and a second through hole (1005) is provided on the arc-shaped limiting plate (1004), and the second through hole (1005) is level with the top of the limiting groove (1003).

8. A hydrogen purification device for producing hydrogen by electrolysis of water according to claim 7, characterized in that: The ventilation switch (13) comprises a sliding housing (1301) which can slide up and down between the two limiting plates (1006); an arc-shaped cavity (1302) which matches the arc-shaped limiting plate (1004) is arranged inside the sliding housing (1301); an air inlet pipe (1304) which communicates with the arc-shaped cavity (1302) is arranged outside the sliding housing (1301); an air outlet pipe (1303) which communicates with the arc-shaped cavity (1302) is arranged inside the sliding housing (1301); and a gas outlet pipe (1303) which communicates with the arc-shaped cavity (1302) is arranged above the air outlet pipe (1303). A mounting plate (1306) is provided which is fixedly connected to the inner side of the sliding housing (1301); a second spring (1307) is fixedly connected between the mounting plate (1306) and a limiting plate (1006) located above; an end of the air inlet pipe (1304) which is away from the arc-shaped cavity (1302) is rotatably connected to a hollow roller (1305) which cooperates with the second annular limiting groove (902) and the convex slide rail (904); and limiting blocks (1308) which cooperate with the limiting plate (1006) are provided at both ends of the sliding housing (1301).

9. A hydrogen purification device for producing hydrogen by electrolysis of water according to claim 8, characterized in that: The circular frame (901) is provided with three evenly distributed second through grooves (906) which are in communication with the second annular limiting groove (902).

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