Safety protection type hydrogen production equipment by electrolysis of water

Abstract

This invention discloses a safety-protected water electrolysis hydrogen production device, relating to the technical field of water electrolysis hydrogen production. It includes a hydrogen generator, with at least one fan fixedly connected to one side. An air guide frame for vertically separating sections is fixedly connected to the upper part of the generator. A partition for left-right separating sections is fixedly connected to the air guide frame. An air guide channel is opened within the air guide frame, and several openings are formed at the bottom of the side of the air guide frame near the air guide channel. This invention requires only a single hydrogen sensor to detect the specific area of ​​hydrogen leakage in a low-cost and timely manner. If only the left section is leaking, maintenance personnel only need to inspect the electrolyzer and other electrolysis-related components in the left section. If only the right section is leaking, only the hydrogen pipe and oxygen pipe, which are primarily pipework components, need to be inspected. This speeds up troubleshooting and maintenance. Furthermore, it allows for timely cessation of hydrogen electrolysis and sealing of the leaking section upon leakage, preventing further hydrogen leakage.

Description

Technical Field

[0001] This invention relates to the technical field of hydrogen production by water electrolysis, and more particularly to a safe and protective water electrolysis hydrogen production device. Background Technology

[0002] In water electrolysis hydrogen production equipment, detecting hydrogen leaks is a crucial step in ensuring operational safety. Because hydrogen is colorless, odorless, and highly flammable, even a small leak can pose a serious safety hazard.

[0003] Traditionally, multiple sensors are installed in combination in various areas where leaks may occur, such as near electrolytic cells, pipe joints, and around storage tanks, to cover multiple areas. However, conventional sensors are expensive, and fixed sensors usually require complex wiring and installation, especially when retrofitting existing environments, which can lead to difficulties in construction and long construction periods. Installing a small number of sensors cannot cover all areas, and detection requires a certain reaction time, making it difficult to detect leaks in a timely manner and making it difficult for maintenance personnel to quickly locate the leak, thus increasing the difficulty of troubleshooting and maintenance. Summary of the Invention

[0004] In order to overcome the shortcomings mentioned in the background art, the present invention provides a safe and protective water electrolysis hydrogen production device.

[0005] A safety-protected electrolytic water hydrogen production device includes a hydrogen generator, at least one fan fixedly connected to one side of the hydrogen generator, an air guide frame fixedly connected to the upper part of the hydrogen generator for dividing the upper and lower sections, a partition plate fixedly connected to the air guide frame for dividing the left and right sections, an air guide channel opened inside the air guide frame, several openings opened at the bottom of the side of the air guide frame near the air guide channel, a guide frame fixedly connected to the side of the hydrogen generator away from the fan, a hydrogen sensor fixedly connected to the guide frame, at least one motor fixedly connected to the hydrogen generator, a rotating shaft fixedly connected to the output shaft of the motor, the rotating shaft rotatably connected to the inner wall of the hydrogen generator, a guide wheel one fixedly connected to one side of the rotating shaft, a guide wheel two fixedly connected to the other side of the rotating shaft, a cam one fixedly connected to the side of the rotating shaft near the adjacent motor, a stop switch corresponding to the cam one fixedly connected to the air guide frame, and two opening and closing plates slidably connected to the side of the air guide frame near the openings, respectively used to control the opening and closing of the openings on both sides of the air guide frame, one opening and closing plate slidably connected to the guide wheel one, and the other opening and closing plate slidably connected to the guide wheel two.

[0006] To further explain, the hydrogen generator includes a water tank for water supply and an electrolytic cell for water electrolysis. Both the water tank and the electrolytic cell are fixed to one side of the bottom of the hydrogen generator. The hydrogen produced by the electrolytic cell is discharged through a hydrogen pipe, and the oxygen produced is discharged through an oxygen pipe. A gas-water separator is installed on the hydrogen pipe to remove water vapor and purify the hydrogen. A water storage tank for collecting the separated water in the hydrogen and oxygen is connected between the hydrogen pipe and the oxygen pipe. A water pump for water delivery is connected between the electrolytic cell and the water tank.

[0007] To further explain, both guide wheels one and two have guide grooves for sliding contact with adjacent opening and closing plates. The guide groove structure of guide wheel one ensures that when guide wheel one initially rotates 90 degrees, the adjacent opening and closing plates remain stationary. When it continues to rotate 90 degrees, the adjacent opening and closing plates slide to close the air guide frame opening. When it rotates another 90 degrees, the adjacent opening and closing plates remain stationary. The guide groove structure of guide wheel two ensures that when guide wheel two initially rotates 90 degrees, the adjacent opening and closing plates slide to close the air guide frame opening. When it continues to rotate 90 degrees, the adjacent opening and closing plates slide to open the air guide frame opening in the opposite direction. When it rotates another 90 degrees, the adjacent opening and closing plates slide to close the air guide frame opening.

[0008] To further explain, the cam contacts the adjacent stop switch via its convex surface. At this time, the stop switch controls the electrolytic cell and water pump to cut off power through the control module.

[0009] Further explanation includes an outlet pipe, which is fixed to the outside of the hydrogen generator and connected to downstream hydrogen processing equipment. A lifting frame for blocking the outlet pipe is slidably connected to each of the two sections below the hydrogen generator. An air pump is installed between the outlet pipe and the outer wall of the hydrogen generator. Cam 2 and Cam 3 are fixedly connected to the output shaft of the motor. Cam 2 and Cam 3 are both press-fitted with the adjacent lifting frame through convex surfaces. A spring is fixedly connected between the lifting frame and the inner wall of the hydrogen generator. A one-way air inlet valve is installed at the bottom of each of the two sections below the hydrogen generator.

[0010] To further explain, the convex structure of both cam two and cam three ensures that the adjacent lifting frame is only lifted upwards by the convex surface when the opening and closing plates of the adjacent sections are closed.

[0011] To further explain, the one-way inlet valve allows external gas to enter the hydrogen generator in one direction only.

[0012] To further explain, it also includes an observation board, which is fixedly connected to the hydrogen generator. The observation board has two observation windows, and the lifting frame is fixedly connected to two indicator blocks of different colors. Only one indicator block can be observed through the observation window of the observation board.

[0013] To further clarify, the two indicator blocks on the lifting frame are set to red and green respectively.

[0014] The beneficial effects of this invention are as follows: This invention only requires the installation of a hydrogen sensor, which can detect the specific area of ​​hydrogen leakage in a timely manner at low cost. If only the left section is leaking, maintenance personnel only need to inspect the electrolytic cell and other electrolysis-based components in the left section. If only the right section is leaking, only the hydrogen pipe and oxygen pipe and other pipeline-based components need to be inspected. In this way, the speed of troubleshooting and maintenance is accelerated. In addition, it can also stop the electrolysis of hydrogen production and seal the leaking section in time when a leak occurs, preventing further hydrogen leakage.

[0015] When hydrogen leaks in either the left or right section, the invention can automatically open the lifting frame of the corresponding section. This allows for timely discharge of hydrogen from the leaking section and unified collection and treatment of the hydrogen, enabling maintenance personnel to safely enter the corresponding section for subsequent inspection and maintenance.

[0016] This invention allows for quick and intuitive determination of hydrogen leakage by observing the color of the indicator block in the observation window, as well as quickly and intuitively determining which specific area is leaking hydrogen, thereby accelerating maintenance operations. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a three-dimensional structural cross-sectional view of the present invention.

[0019] Figure 3 This is a three-dimensional structural diagram of the hydrogen generator, fan, and air guide frame of the present invention.

[0020] Figure 4 This is a three-dimensional structural separation diagram of the air guide frame and the opening / closing plate of the present invention.

[0021] Figure 5 This is a three-dimensional structural diagram of the hydrogen pipe, oxygen pipe, and gas-water separator components of the present invention.

[0022] Figure 6 This is a three-dimensional structural diagram of the motor, shaft, and cam components of the present invention.

[0023] Figure 7 This is a three-dimensional structural diagram of the guide wheel one and guide wheel two components of the present invention.

[0024] Figure 8 This is a three-dimensional structural diagram of the components of the present invention, including the cam, spring, and one-way vent valve.

[0025] Figure 9 This is a three-dimensional structural diagram of the cam two and cam three components of the present invention.

[0026] Figure 10 This is a three-dimensional structural diagram of the hydrogen generator, observation plate, and indicator block of the present invention.

[0027] In the attached diagrams: 101: Hydrogen generator, 102: Fan, 103: Water tank, 104: Electrolyzer, 105: Water pump, 106: Hydrogen pipe, 107: Oxygen pipe, 108: Air guide frame, 109: Gas-water separator, 110: Water tank, 201: Guide frame, 202: Hydrogen sensor, 203: Motor, 204: Rotating shaft, 205: Guide wheel one, 206: Guide wheel two, 207: Cam one, 208: Stop switch, 209: Opening and closing plate, 301: Gas outlet pipe, 302: Lifting frame, 3021: Gas pump, 303: Cam two, 3031: Spring, 304: Cam three, 305: One-way air inlet valve, 401: Observation plate, 402: Indicator block. Detailed Implementation

[0028] The present invention will be further described below with reference to specific embodiments. The illustrative embodiments and descriptions herein are used to explain the present invention, but are not intended to limit the present invention.

[0029] Example 1: A safety-protected water electrolysis hydrogen production device, such as... Figures 1-5 As shown, the device includes a hydrogen generator 101. A ventilation slot is located on the upper right side of the hydrogen generator 101. Two fans 102 are fixedly connected to the upper left side of the hydrogen generator 101. The hydrogen generator 101 includes a water tank 103 for water supply and an electrolytic cell 104 for water electrolysis. Both the water tank 103 and the electrolytic cell 104 are fixedly connected to the left side of the bottom of the hydrogen generator 101. A water pump 105 connects the water tank 103 and the electrolytic cell 104. The hydrogen produced by the electrolysis of water in the electrolytic cell 104 is discharged through a hydrogen pipe 106, and the oxygen produced is discharged through an oxygen pipe 107. A guide frame 108 is fixedly connected to the upper part of the hydrogen generator 101, which guides the hydrogen... The internal section of the generator 101 is divided into upper and lower sections. A partition is fixed to the right side of the air guide frame 108 to divide the lower section of the hydrogen generator 101 into left and right sections. An air guide channel is opened in the upper part of the air guide frame 108. The fan 102 blows external air into the air guide channel for heat dissipation inside the hydrogen generator 101. Several openings are opened at the bottom of the side of the air guide frame 108 near the air guide channel. The produced hydrogen usually contains water vapor. A gas-water separator 109 is installed on the hydrogen pipe 106 to separate water vapor and purify the hydrogen. A water storage tank 110 is connected between the hydrogen pipe 106 and the oxygen pipe 107 to collect the separated water in the hydrogen and oxygen.

[0030] like Figure 4 , Figure 6 and Figure 7As shown, it also includes a guide frame 201, which is fixed to the upper right side of the hydrogen generator 101. A hydrogen sensor 202 is fixed to the middle of the guide frame 201. Motors 203 are fixed to both the front and rear sides of the left side of the hydrogen generator 101. The hydrogen sensor 202 is electrically connected to the motor 203 through a control module. A rotating shaft 204 is fixed to the output shaft of the motor 203. One end of the rotating shaft 204 passes through the guide frame 201 and is rotatably connected to the inner wall of the hydrogen generator 101. A guide wheel 205 is fixed to the left side of the rotating shaft 204, and a guide wheel 206 is fixed to the right side of the rotating shaft 204. Cam 207 is fixedly connected to the far left of 4. A stop switch 208 corresponding to cam 207 is fixedly connected to the left side of the air guide frame 108. Cam 207 contacts the adjacent stop switch 208 through its convex surface. At this time, the stop switch 208 controls the electrolyzer 104 and water pump 105 to cut off the power through the control module to stop hydrogen production. Two opening and closing plates 209 are slidably connected to the side of the air guide frame 108 near the opening in the left and right direction. They are used to control the opening and closing of the openings on the left and right sides of the air guide frame 108, respectively. Guide wheel 205 and guide wheel 206 are both provided with guide grooves for sliding contact with the adjacent opening and closing plates 209.

[0031] When using this equipment to produce hydrogen through water electrolysis, first turn on the fan 102. The air guide channel of the air guide frame 108 will guide the gas to the right to the hydrogen sensor 202. Initially, all openings of the air guide frame 108 are open. If the hydrogen sensor 202 detects that the gas being drawn contains hydrogen, the hydrogen sensor 202 will control the output shaft of the motor 203 to rotate 90°. When the output shaft of the motor 203 drives the cam 207 to rotate and contact the stop switch 208, the stop switch 208 will control the electrolyzer 104 and the water pump 105 to cut off the power through the control module, thus stopping hydrogen production.

[0032] To determine whether hydrogen is leaking in the left or right section, the specific operation is as follows: The output shaft of motor 203 also drives guide wheel 1 205 and guide wheel 2 206 to rotate 90°. Guide wheel 1 205 first rotates idly relative to the left opening and closing plate 209, and guide wheel 2 206 first drives the right opening and closing plate 209 to move and close. After a period of time, if hydrogen content is still detected, it indicates that there is a leak in the left section. If no more hydrogen content is detected, it indicates that there is no leak in the left section.

[0033] After the above operations, if the left section is found to be leaking, the hydrogen sensor 202 controls the output shaft of the motor 203 to continue rotating 90° (i.e., from 90° to 180°) through the control module, thereby driving the guide wheel 1 205 and guide wheel 206 to continue rotating 90°. The guide wheel 1 205 drives the left opening and closing plate 209 to move and close, preventing the hydrogen leaking from the left section from overflowing.

[0034] To further detect whether there is a leak in the right section, in addition to closing the left opening and closing plate 209, it is also necessary to control the opening and closing plate 209 of the right side to open. Specifically, the guide wheel 206 drives the right opening and closing plate 209 to move in the opposite direction to open. After a period of time, if hydrogen content is still detected, it indicates that there is a leak in the right section. If hydrogen content is no longer detected, it indicates that there is no leak in the right section.

[0035] After the above operations, if the right-side section is indicated to be leaking, the hydrogen sensor 202 controls the output shaft of the motor 203 to continue rotating 90° (i.e., from 180° to 270°) through the control module. The first guide wheel 205 rotates again relative to the left-side opening and closing plate 209, and the second guide wheel 206 drives the right-side opening and closing plate 209 to move and close again, preventing the hydrogen leaking from the right-side section from overflowing.

[0036] In summary, this invention only requires a single hydrogen sensor 202 to detect the specific area of ​​hydrogen leakage in a low-cost and timely manner. If the leakage is only in the left section, maintenance personnel only need to inspect the electrolysis cell 104 and other electrolysis-related components in the left section. If the leakage is only in the right section, only the pipeline-related components such as the hydrogen pipe 106 and oxygen pipe 107 need to be inspected. This speeds up the troubleshooting and maintenance process. In addition, it can also stop the electrolysis of hydrogen production and seal the leakage area in time when a leak occurs, preventing further hydrogen leakage.

[0037] Example 2: Based on Example 1, such as Figure 8 and Figure 9 As shown, it also includes an outlet pipe 301, which is fixed to the bottom of the hydrogen generator 101. In addition to the outlets at both ends, the outlet pipe 301 has two more outlets, which connect to the left and right sections inside the hydrogen generator 101 respectively. The outlet pipe 301 connects to downstream hydrogen processing equipment. A lifting frame 302 is slidably connected in the vertical direction to each of the two sections below the hydrogen generator 101. The lifting frame 302 blocks the adjacent outlets of the outlet pipe 301. An air pump 3021 is installed between the outlet pipe 301 and the outer wall of the hydrogen generator 101 to detect hydrogen leakage. Afterwards, the air pump 3021 can be turned on. The output shaft of the motor 203 is fixedly connected to cam 2 303 and cam 3 304. The convex structure of cam 2 303 and cam 3 304 ensures that the adjacent lifting frame 302 is lifted upward only when the opening and closing plate 209 of the adjacent section is closed. A spring 3031 is fixedly connected between the lifting frame 302 and the inner wall of the hydrogen generator 101. A one-way air inlet valve 305 is provided at the bottom of the two sections on the left and right below the hydrogen generator 101. The one-way air inlet valve 305 allows external gas to enter the hydrogen generator 101 in one direction.

[0038] When the output shaft of motor 203 rotates, it drives cam 2 303 and cam 3 304 to rotate synchronously. When guide wheel 2 206 drives the opening and closing plate 209 on the right side to move and close (that is, when the output shaft of motor 203 starts to rotate 90° and from 180° to 270°), cam 3 304 pushes the lifting frame 302 on the right side upward through the convex surface. The spring 3031 on the right side is compressed, so that the lifting frame 302 on the right side no longer blocks the right opening of the gas outlet pipe 301. This allows the hydrogen gas leaking from the right side section to be sucked out by the gas pump 3021 through the gas outlet pipe 301. During the suction, external air enters the right side of the hydrogen generator 101 through the one-way inlet valve 305 on the right side to prevent the formation of negative pressure in the closed space.

[0039] When the guide wheel 206 drives the opening and closing plate 209 on the right side to move in the opposite direction and open (that is, the output shaft of the motor 203 rotates from 90° to 180°), the convex surface of the cam 304 disengages from the lifting frame 302 on the right side, and the spring 3031 on the right side resets and drives the lifting frame 302 on the right side to slide down and close the right side opening of the air outlet pipe 301.

[0040] When the guide wheel 205 drives the left opening and closing plate 209 to move and close (that is, the output shaft of the motor 203 rotates from 90° to 180°), the cam 303 pushes the left lifting frame 302 upward through the convex surface, and the left spring 3031 is compressed, so that the left lifting frame 302 no longer blocks the gas outlet pipe 301. The hydrogen gas leaked in the left section is sucked out by the gas pump 3021 through the gas outlet pipe 301. When the gas is sucked out, the outside air enters the left part of the hydrogen generator 101 through the left one-way air inlet valve 305 to prevent the formation of negative pressure in the closed space.

[0041] When the guide wheel 205 rotates freely relative to the left opening plate 209 (i.e., the output shaft of the motor 203 starts to rotate 90° and from 180° to 270°), the convex surface of the cam 303 disengages from the left lifting frame 302, and the left spring 3031 resets, causing the left lifting frame 302 to slide downwards and close the left port of the air outlet pipe 301.

[0042] In summary, when hydrogen leaks in either the left or right section, the present invention can automatically open the corresponding lifting frame 302. This allows for timely discharge of hydrogen in the corresponding section and unified collection and processing of the hydrogen, enabling maintenance personnel to safely enter the corresponding section for subsequent inspection and maintenance.

[0043] like Figure 10 As shown, it also includes an observation plate 401, which is fixedly connected to the hydrogen generator 101. The observation plate 401 has two observation windows on the left and right sides. Green and red indicator blocks 402 are fixedly connected to the upper and lower sides of the lifting frame 302, respectively. Initially, the observation window of the observation plate 401 can only observe the green indicator block 402. When hydrogen leaks, only the red indicator block 402 can be observed.

[0044] When the lifting frame 302 rises, it causes the two indicator blocks 402 on it to move upwards synchronously. At this time, the upper green indicator block 402 moves away from the observation window of the observation plate 401, and the lower red indicator block 402 moves to the observation window of the observation plate 401. Conversely, when the lifting frame 302 descends, the upper green indicator block 402 moves to the observation window of the observation plate 401. In this way, the present invention can quickly and intuitively determine whether there is a hydrogen leak by observing the color of the indicator block 402 in the observation window, and quickly and intuitively determine which specific area is leaking hydrogen, thereby speeding up the maintenance operation.

[0045] It should be understood that the above description is for illustrative purposes only and is not intended to limit the invention. Those skilled in the art will understand that variations of the invention are included within the scope of the claims herein.

Claims

1. A safety-protected water electrolysis hydrogen production device, characterized in that: The device includes a hydrogen generator (101), with at least one fan (102) fixedly attached to one side. An air guide frame (108) for dividing the upper and lower sections is fixedly attached to the upper part of the hydrogen generator (101). A partition for dividing the lower section of the hydrogen generator (101) is fixedly attached to the air guide frame (108), and an air guide channel is opened inside the air guide frame (108). Several openings are opened at the bottom of the side of the air guide frame (108) closest to the air guide channel. A guide frame (201) is fixedly attached to the side of the hydrogen generator (101) away from the fan (102). 1) A hydrogen sensor (202) is fixedly connected. The hydrogen generator (101) is fixedly connected to at least one motor (203). The output shaft of the motor (203) is fixedly connected to a rotating shaft (204). The rotating shaft (204) is rotatably connected to the inner wall of the hydrogen generator (101). A guide wheel 1 (205) is fixedly connected to one side of the rotating shaft (204), and a guide wheel 2 (206) is fixedly connected to the other side of the rotating shaft (204). A cam 1 (207) is fixedly connected to the side of the rotating shaft (204) closest to the adjacent motor (203). A stop switch corresponding to the cam 1 (207) is fixedly connected to the air guide frame (108). 208), the air guide frame (108) has two opening and closing plates (209) slidably connected on the side near the opening, which are used to control the opening and closing of the openings on both sides of the air guide frame (108). One opening and closing plate (209) is slidably connected to guide wheel one (205), and the other opening and closing plate (209) is slidably connected to guide wheel two (206). Guide wheel one (205) and guide wheel two (206) are both provided with guide grooves for sliding contact with adjacent opening and closing plates (209). The guide groove structure of guide wheel one (205) allows the adjacent opening and closing plates (209) to slide when guide wheel one (205) initially rotates ninety degrees. When the guide wheel (206) remains stationary and continues to rotate 90 degrees, the adjacent opening and closing plate (209) slides to close the opening of the air guide frame (108). When it rotates another 90 degrees, the adjacent opening and closing plate (209) remains stationary. The guide groove structure of the guide wheel (206) causes the adjacent opening and closing plate (209) to slide to close the opening of the air guide frame (108) when the guide wheel (206) initially rotates 90 degrees. When it continues to rotate 90 degrees, the adjacent opening and closing plate (209) slides in the opposite direction to open the opening of the air guide frame (108). When it rotates another 90 degrees, the adjacent opening and closing plate (209) slides to close the opening of the air guide frame (108).

2. The safety shielded electrolytic hydrogen generator of claim 1, wherein: The hydrogen generator (101) includes a water tank (103) for water supply and an electrolytic cell (104) for water electrolysis. The water tank (103) and the electrolytic cell (104) are both fixed to one side of the bottom of the hydrogen generator (101). The hydrogen produced by the electrolytic cell (104) for water electrolysis is discharged through a hydrogen pipe (106), and the oxygen produced is discharged through an oxygen pipe (107). A gas-water separator (109) for removing water vapor to purify hydrogen is provided on the hydrogen pipe (106). A water storage cylinder (110) for collecting water separated from hydrogen and oxygen is connected between the hydrogen pipe (106) and the oxygen pipe (107). A water pump (105) for water delivery is connected between the electrolytic cell (104) and the water tank (103).

3. The safety shielded electrolytic hydrogen generator of claim 2, wherein: Cam 1 (207) contacts the adjacent stop switch (208) through its convex surface. At this time, the stop switch (208) controls the electrolytic cell (104) and water pump (105) to be de-energized through the control module.

4. A safety-protected water electrolysis hydrogen production device according to claim 3, characterized in that: It also includes an outlet pipe (301), which is fixed to the outside of the hydrogen generator (101). The outlet pipe (301) is connected to the downstream hydrogen processing equipment. A lifting frame (302) for blocking the outlet pipe (301) is slidably connected in each of the two sections below the hydrogen generator (101). An air pump (3021) is installed between the outlet pipe (301) and the outer wall of the hydrogen generator (101). The output shaft of the motor (203) is fixedly connected to cam two (303) and cam three (304). Cam two (303) and cam three (304) are both pressed and engaged with the adjacent lifting frame (302) through the convex surface. A spring (3031) is fixedly connected between the lifting frame (302) and the inner wall of the hydrogen generator (101). A one-way air inlet valve (305) is provided at the bottom of each of the two sections below the hydrogen generator (101).

5. A safety-protected water electrolysis hydrogen production device according to claim 4, characterized in that: The convex structure of cam two (303) and cam three (304) both allow the adjacent lifting frame (302) to be lifted upward only when the opening and closing plate (209) of the adjacent section is closed.

6. A safety-protected water electrolysis hydrogen production device according to claim 5, characterized in that: The one-way inlet valve (305) allows external gas to enter the hydrogen generator (101) in one direction.

7. A safety-protected water electrolysis hydrogen production device according to claim 6, characterized in that: It also includes an observation board (401), which is fixedly connected to the hydrogen generator (101). The observation board (401) has two observation windows, and the lifting frame (302) is fixedly connected to two different colored prompt blocks (402). The observation window of the observation board (401) can only observe one prompt block (402).

8. A safety-protected water electrolysis hydrogen production device according to claim 7, characterized in that: The two indicator blocks (402) on the lifting frame (302) are set to red and green respectively.

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