High-efficiency carbon sequestration microalgae cultivation device

Abstract

The application discloses a high-efficiency carbon fixation microalgae breeding device, and relates to the technical field of carbon fixation microalgae breeding.The device comprises an elongated pool, a partition plate is arranged at the middle position of the elongated pool, so that a loop-shaped channel in the shape of a long strip is formed in the elongated pool, bottom plates are arranged in the two parallel straight channels of the loop-shaped channel, the upper surfaces of the bottom plates are arranged in an inclined manner, and the inclined directions of the two bottom plates are opposite.Two liquid lifting mechanisms are arranged at the high end positions of the two bottom plates respectively, and are used for lifting the algal liquid in the loop-shaped channel to the high end of the bottom plate, so that the algal liquid flows downward along the upper surface of the bottom plate automatically.Two groups of disturbance mechanisms are arranged on the upper surfaces of the two bottom plates.The algal liquid is driven to form a turbulent state by the bidirectional inclined bottom plates, the liquid lifting mechanism and the disturbance mechanism, the problems of surface light inhibition and bottom dark area are reduced, and the light energy utilization efficiency of the microalgae is improved significantly.

Description

Technical Field

[0001] This invention relates to the field of carbon-fixing microalgae cultivation technology, specifically to a high-efficiency carbon-fixing microalgae cultivation device. Background Technology

[0002] Microalgae cultivation, as a highly efficient biological carbon sequestration technology, holds significant application prospects in environmental protection, energy, and biotechnology. Traditional microalgae cultivation often employs open raceway pond technology to cultivate microalgae species such as Spirulina, Chlorella, Dunaliella salina, and *Pseudochlorophyllaria*. These raceway ponds utilize stirring blades to drive the circulation of the algal solution, promoting uniform mixing of nutrients and light distribution among algal cells. However, existing technologies suffer from the following significant drawbacks:

[0003] 1. Traditional raceway pools rely on agitator blades for propulsion, ensuring thorough mixing of the algal solution within the agitation zone. However, along the longer course of the raceway pool, the algal solution often remains in a laminar flow state. Surface algal cells are prone to photoinhibition due to strong light exposure, while bottom algal cells remain in dark areas for extended periods due to insufficient light, resulting in low light energy utilization.

[0004] 2. The slow water flow in the raceway pool results in low gas-liquid mass transfer efficiency, particularly hindering the rapid dissipation of oxygen produced by photosynthesis, which tends to accumulate in the algal solution. Excessively high dissolved oxygen concentrations can induce substrate inhibition, which in turn inhibits the photosynthetic efficiency of microalgae and reduces their carbon fixation capacity.

[0005] 3. Traditional stirring devices consume a lot of energy and are difficult to distribute algal cells and nutrients evenly throughout the raceway pool, affecting the growth efficiency and yield of microalgae. Summary of the Invention

[0006] The purpose of this invention is to provide a high-efficiency carbon-fixing microalgae cultivation device, which solves the problem that the algal solution in existing carbon-fixing microalgae cultivation devices is often in a laminar flow state, the surface algal cells are easily photoinhibited by strong light, and the bottom algal cells are in a dark area for a long time due to insufficient light, resulting in low light energy utilization.

[0007] The present invention solves the above-mentioned technical problems through the following technical solutions, the present invention comprising:

[0008] A long, narrow pool is provided with a partition in the middle of the pool to form a long, narrow, loop-shaped channel inside the pool. Each of the two parallel straight channels of the loop-shaped channel is provided with a bottom plate. The upper surface of the bottom plate is inclined, and the two bottom plates are inclined in opposite directions.

[0009] Two liquid lifting mechanisms are respectively set at the high end of the two base plates to lift the algal liquid in the loop channel to the high end of the base plate, so that the algal liquid can flow downward along the upper surface of the base plate.

[0010] Two sets of disturbance mechanisms are respectively set on the upper surface of the two base plates to disturb the algal liquid and realize the algal liquid flowing in a turbulent manner.

[0011] Preferably, the liquid extraction mechanism includes a rotating wheel that is rotatably mounted between the elongated pool and the partition via a rotating shaft. Multiple partition plates are evenly distributed in a ring on the outer surface of the rotating wheel, and an inner groove is formed between two adjacent partition plates.

[0012] The upper end of the base plate has an arc-shaped groove that matches the outer diameter of the liquid extraction mechanism, and a drive system for driving the rotating wheel is installed on the partition plate.

[0013] Preferably, both sides of the rotating wheel have circular portions, and the arc-shaped groove is provided with an arc-shaped sealing groove that matches the circular portions.

[0014] Preferably, the liquid extraction mechanism is provided with a carbon dioxide aeration mechanism, which includes a carbon dioxide cylinder and an inner gas delivery hole opened on the rotating shaft. The carbon dioxide cylinder and the inner gas delivery hole are connected by a gas pipe. Each of the multiple isolation plates is provided with an adaptive opening valve. The adaptive opening valve is connected to the inner gas delivery hole. When the adaptive opening valve is flipped into the arc-shaped groove, it opens to deliver carbon dioxide gas to the algal liquid in the corresponding inner groove.

[0015] Preferably, the adaptive valve includes a flat inner cavity formed inside the isolation plate, a first micro-hole evenly distributed on one side of the flat inner cavity, a sealing plate slidably disposed in the flat inner cavity, a second micro-hole corresponding to the first micro-hole on the sealing plate, a piston slidably disposed in the flat inner cavity, the piston being fixed to the sealing plate, and a spring installed between the inner side of the piston and the cavity wall of the flat inner cavity;

[0016] A first roller extending into a flat inner cavity is mounted on the outer side of the piston. The lower end of the arc-shaped groove has a guiding arc surface, which is used to push the first roller into the flat inner cavity.

[0017] Preferably, the upper end of the arc-shaped groove is provided with an arc-shaped clearance groove corresponding to the first roller.

[0018] Preferably, the disturbance mechanism includes a flip plate mounted on the upper surface of the base plate, a telescopic member on the base plate below the flip plate for pushing the flip plate to flip, and a pulling member on the base plate downstream of the flip plate. The pulling member, in cooperation with the telescopic member, drives the flip plate to flip angle based on the flow rate of the algal liquid, and the flow rate of the algal liquid is positively correlated with the flip plate flip angle.

[0019] Preferably, the telescopic component includes an inner mounting hole formed on the upper surface of the base plate, in which a flipping rod is rotatably mounted via a rotating rod. An outer tube is slidably sleeved on the upper end of the flipping rod, and a second roller in contact with the flipping plate is mounted on the upper end of the outer tube. An upwardly inclined guide plate is fixed to the side wall of the inner mounting hole, and a third roller is mounted on the side wall of the outer tube and located above the guide plate. The flipping rod is connected to a pulling component via a pull rope.

[0020] Preferably, a triangular block is fixed to the bottom of the flip plate, and the second roller is in contact with the inclined surface of the triangular block.

[0021] Preferably, the pulling member includes a baffle plate that is slidably inclined along the upper surface of the base plate, the baffle plate having a through groove, and a flip plate being hinged to the outlet of the through groove.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] 1. By using a bidirectional inclined bottom plate, a liquid lifting mechanism, and a disturbance mechanism to drive the algal liquid into a turbulent state, the problem of surface light inhibition and bottom dark area is reduced, significantly improving the light energy utilization efficiency of microalgae.

[0024] 2. The combination of the liquid lifting mechanism and the carbon dioxide aeration mechanism effectively increases the height of the algal liquid and injects carbon dioxide into the algal liquid in the semi-sealed inner tank. It can evenly release microbubbles and increase the carbon source supply effect in the semi-sealed inner tank environment, promote microalgae photosynthesis, and optimize carbon fixation effect.

[0025] 3. The pulling and telescopic components in the disturbance mechanism adaptively adjust the angle of the flap according to the algal liquid volume. By dynamically adjusting the flap drop, the disturbance effect of the algal liquid is enhanced, thereby optimizing the turbulence state and the uniformity of microalgae growth. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0027] Figure 2 for Figure 1 Front view sectional structural diagram;

[0028] Figure 3 This is a three-dimensional structural diagram of the liquid extraction mechanism in this invention;

[0029] Figure 4 This is a schematic diagram of the arc-shaped groove in the present invention;

[0030] Figure 5 This is a schematic diagram of the front cross-sectional structure of the liquid extraction mechanism in this invention;

[0031] Figure 6 for Figure 5Enlarged structural diagram at point A in the middle;

[0032] Figure 7 This is a schematic diagram of the front cross-sectional structure of the disturbance mechanism in this invention;

[0033] Figure 8 for Figure 7 A schematic diagram of the three-dimensional structure.

[0034] The numbers in the image represent:

[0035] 1. Long pool; 11- Partition; 12- U-shaped channel; 13- Bottom plate; 14- Arc-shaped groove;

[0036] 2. Liquid extraction mechanism; 2-Liquid extraction mechanism; 22-Isolation plate; 23-Inner groove; 24-Arc-shaped sealing groove; 25-Guiding arc surface; 261-First micropore; 262-Sealing plate; 263-Second micropore; 264-Piston; 265-First roller; 266-Spring; 27-Arc-shaped clearance groove;

[0037] 3. Disturbance mechanism; 31-Installation inner hole; 32-Flipping rod; 33-Outer tube; 34-Third roller; 35-Guide plate; 36-Second roller; 37-Triangle block; 38-Pull component; 381-Push plate; 382-Through groove; 383-Flipping plate; 39-Flipping plate; 310-Pull rope. Detailed Implementation

[0038] The above-mentioned and other technical features and advantages of the present invention will be described in more detail below with reference to the accompanying drawings. Example 1

[0039] This embodiment provides a technical solution: a high-efficiency carbon-fixing microalgae cultivation device, such as... Figure 1-5 As shown, it includes a long, narrow pool 1, two liquid extraction mechanisms 2, and two sets of agitation mechanisms 3. The long, narrow pool 1 is a long, narrow water storage tank with an inlet and an outlet on its side for filling and draining water. A baffle 11 is installed in the middle of the long, narrow pool 1 to form a long, narrow, loop-shaped channel 12 inside the pool 1. The algal liquid flows back and forth within the loop-shaped channel 12, and both ends of the long, narrow pool 1 are arc-shaped to improve the smoothness of the algal liquid flow within it.

[0040] Each of the two parallel straight channels of the U-shaped channel 12 is equipped with a base plate 13. The upper surface of the base plate 13 is inclined, and the two base plates 13 are inclined in opposite directions. The specific slope, length, and other dimensions of the base plate 13 can be set as needed. Two liquid lifting mechanisms 2 are respectively set at the high end of the two base plates 13 to lift the algal liquid in the U-shaped channel 12 to the high end of the base plate 13, so that the algal liquid can flow downward along the upper surface of the base plate 13, realizing the circulation of the algal liquid inside, and changing the driving mode of the algal liquid.

[0041] Furthermore, the liquid extraction mechanism 2 includes a rotating wheel 21 rotatably mounted between the elongated pool 1 and the partition plate 11 via a rotating shaft. Multiple partition plates 22 are evenly distributed in a ring on the outer surface of the rotating wheel 21, and an inner groove 23 is formed between two adjacent partition plates 22. The inner groove 23 is a chamber for temporary storage of algal liquid. The high end of the bottom plate 13 has an arc-shaped groove 14 adapted to the outer diameter of the liquid extraction mechanism 2. Both sides of the rotating wheel 21 have circular portions. An arc-shaped sealing groove 24 adapted to the circular portion is opened on the arc-shaped groove 14. A sealing structure is provided on the circular portion. The arrangement of the partition plate 22, the circular portion and the arc-shaped sealing groove 24 can ensure that the inner groove 23 has a certain degree of sealing. When the rotating wheel 21 rotates, the inner groove 23 can store algal liquid to a certain extent, so as to realize the transportation of algal liquid from the lower end to the high end of the bottom plate 13. A drive system for driving the rotating wheel 21 to rotate is installed on the partition plate 11. The drive system can be a motor or a motor-related power structure to drive the rotating wheel 21 to rotate as a whole.

[0042] Two sets of disturbance mechanisms 3 are respectively set on the upper surface of the two base plates 13. The number of each set of disturbance mechanisms 3 is set according to actual needs. They are used to disturb the algal liquid and realize the algal liquid flowing in the form of turbulence. In addition, protrusions can be uniformly set on the upper surface of the base plate 13 to further enhance the disturbance effect on the algal liquid.

[0043] The drive system drives the rotating wheel 21 to rotate, so as to transfer the algal liquid at the lower end to the upper end of the bottom plate 13. The algal liquid flows downward along the bottom plate 13 and, in conjunction with the disturbance mechanism 3, uses gravitational potential energy to continuously convert it into fluid kinetic energy. The flow of algal liquid changes from passive to active, so that the flow velocity of algal liquid is sufficient to form a turbulent state. The algal cells exchange frequently, and oxygen is fully released, thereby greatly improving the light energy utilization rate of microalgae and achieving the purpose of efficient carbon fixation. Example 2

[0044] This embodiment is a further optimization based on Embodiment 1. The parts that are the same as those described above will not be repeated here. Figure 2 , Figure 5 and Figure 6 As shown, to further better realize the present invention, the following configuration is specifically adopted:

[0045] Carbon dioxide is the main carbon source for photosynthesis in algal liquid. The liquid extraction mechanism 2 is equipped with a carbon dioxide aeration mechanism, which is used to disperse carbon dioxide gas into tiny bubbles, increase the contact area between carbon dioxide gas and algal liquid, replenish the carbon source in algal liquid, promote the rapid dissolution of carbon dioxide in algal liquid, reduce the growth limitation caused by insufficient carbon, and thus improve the light energy utilization rate.

[0046] The liquid extraction mechanism 2 includes a carbon dioxide cylinder (not shown in the figure) and a gas delivery port opened on the rotating shaft. The carbon dioxide cylinder and the gas delivery port are connected by a gas pipe. Specifically, the gas pipe is connected to the rotating shaft by a rotary joint. Each of the multiple isolation plates 22 is equipped with an adaptive valve. The adaptive valve is connected to the gas delivery port. When the adaptive valve is flipped into the arc groove 14, it opens to deliver carbon dioxide gas to the algal liquid in the corresponding inner tank 23. When the adaptive valve is flipped to another position, it is in an automatically closed state. Therefore, it will only open when the inner tank 23 is rotated into the arc groove 14 to push the algal liquid, thus injecting carbon dioxide into the algal liquid inside the corresponding inner tank 23.

[0047] Furthermore, the adaptive valve opening component includes a flat inner cavity formed inside the isolation plate 22. The flat inner cavity is arranged along the isolation plate 22, and a first micro-hole 261 is evenly distributed on one side of the flat inner cavity. The first micro-hole 261 is formed on the side of the rotating wheel 21 in the direction of rotation. A sealing plate 262 is slidably disposed in the flat inner cavity, close to the side of the first micro-hole 261. A second micro-hole 263 corresponding to the first micro-hole 261 is formed on the sealing plate 262. When the sealing plate 262 slides to the unlocked position, the positions of the first micro-hole 261 and the second micro-hole 263 correspond, and the flat inner cavity is connected to the outside, and carbon dioxide gas is ejected through the first micro-hole 261. When the sealing plate 262 slides to the locked position, the positions of the first micro-hole 261 and the second micro-hole 263 are offset, and the flat inner cavity is closed to the outside.

[0048] A piston 264 is slidably sealed within the flat inner cavity. The piston 264 is fixed to the sealing plate 262. A spring 266 is installed between the inner side of the piston 264 and the cavity wall of the flat inner cavity. A first roller 265 extending out of the flat inner cavity is installed on the outer side of the piston 264. The force of the spring 266 is used to push the first roller 265 out of the flat inner cavity. At this time, the sealing plate 262 is in the locked position. The lower end of the arc groove 14 has a guiding arc surface 25, which is used to push the first roller 265 into the flat inner cavity. At this time, the sealing plate 262 will move to the unlocked position. The upper end of the arc groove 14 has an arc-shaped relief groove 27 corresponding to the first roller 265.

[0049] As the rotating wheel 21 rotates, when the isolation plate 22 rotates into the arc-shaped groove 14, its first roller 265 contacts the guide arc surface 25, pushing the first roller 265 into the flat inner cavity and compressing the spring 266. At this time, the sealing plate 262 slides to the unlocked position, and the first micro-hole 261 corresponds to the second micro-hole 263. The high-pressure carbon dioxide gas discharged from the carbon dioxide cylinder will be ejected through multiple first micro-holes 261, dispersing the carbon dioxide gas into tiny bubbles and increasing the contact area between the carbon dioxide gas and the algae liquid. The carbon source in the algal solution is replenished, and since the inner tank 23 is in a semi-closed state, when carbon dioxide gas is discharged, the inner tank 23 has a certain pressure, which can further promote the absorption of carbon dioxide by the algal solution. As the rotating wheel 21 rotates, when the first roller 265 enters the arc-shaped relief groove 27, the first roller 265 will enter the arc-shaped relief groove 27 due to the elastic force of the spring 266. The sealing plate 262 moves to the locking position, closing the first micropore 261, and the algal solution is discharged along the bottom plate 13 due to the force of gravity. Example 3

[0050] This embodiment is a further optimization based on Embodiment 1. The parts that are the same as those described above will not be repeated here. Figure 1 , Figure 2 , Figure 7 and Figure 8 As shown, to further better realize the present invention, the following configuration is specifically adopted:

[0051] The disturbance mechanism 3 includes a flap 39 that is flipped and installed on the upper surface of the base plate 13. A rubber strip is bonded between the upper end of the flap 39 and the upper surface of the base plate 13 to prevent the algae liquid from flowing through the gap between the flap 39 and the base plate 13. A telescopic member is provided on the base plate 13 below the flap 39 to push the flap 39 to flip. A pulling member 38 is provided on the base plate 13 downstream of the flap 39. The pulling member 38 drives the flap 39 to flip by cooperating with the telescopic member based on the flow rate of the algae liquid. The flow rate of the algae liquid is positively correlated with the flip angle of the flap 39.

[0052] The telescopic component includes an inner mounting hole 31 on the upper surface of the base plate 13 to prevent algae liquid from remaining in the flap 39. A through hole for discharging algae liquid can be opened at the bottom of the flap 39. A flipping rod 32 is rotatably mounted in the inner mounting hole 31 via a rotating rod. An outer tube 33 is slidably sleeved on the upper end of the flipping rod 32. A second roller 36 that contacts the flap 39 is mounted on the upper end of the outer tube 33. A triangular block 37 is fixed at the bottom of the flap 39, and the second roller 36 contacts the inclined surface of the triangular block 37. An upwardly inclined guide plate 35 is fixed on the side wall of the inner mounting hole 31. A third roller 34 located on the upper side of the guide plate 35 is mounted on the side wall of the outer tube 33. The flipping rod 32 is connected to the pulling component 38 via a pull rope 310.

[0053] The pulling member 38 includes a push plate 381 that is inclined and slidably disposed along the upper surface of the base plate 13. The push plate 381 has a through groove 382 with the outlet of the through groove 382 facing upward. A flip plate 383 is hingedly installed at the outlet of the through groove 382.

[0054] As the algal liquid flows downwards along the bottom plate 13, it flows over the flap 39. The drop between the end of the flap 39 and the bottom plate 13 further creates gravitational potential energy in the algal liquid during its discharge, increasing the turbulence and disturbance between the upper and lower layers of the algal liquid. When the algal liquid flows and impacts the pulling member 38, the pulling member 38 is pushed downwards, which in turn pulls the flipping rod 32 upwards via the pull rope 310. Furthermore, guided by the guide plate 35 and in cooperation with the third roller 34, the outer tube 33 extends along the flipping rod 32, pushing the flap 39 upwards, thereby increasing the distance between the end of the flap 39 and the bottom plate 13. The drop size means that the greater the flow rate of the algae solution, the greater the drop between the end of the flap 39 and the bottom plate 13, and the greater the gravitational potential energy generated when the flap 39 is discharged. At the same time, the algae solution will be discharged through the channel 382. Since the outlet of the channel 382 is set upward, the algae solution discharged through the channel 382 will be set in an upward arc shape. Furthermore, the flap 383 will adaptively control the size of the outlet of the channel 382 according to the size of the algae solution flow. That is, when the algae solution flow is greater, the flap 383 will be opened wider, and the drainage volume will be greater. Therefore, it can be ensured that the algae solution discharged from the channel 382 will present an upward arc structure.

[0055] The above description is merely a preferred embodiment of the present invention and is illustrative rather than restrictive. Those skilled in the art will understand that many changes, modifications, and even equivalents can be made within the spirit and scope defined by the claims of the present invention, all of which will fall within the protection scope of the present invention.

Claims

1. A high-efficiency carbon-fixing microalgae cultivation device, characterized in that, include: A long pool (1) is provided with a partition (11) in the middle of the long pool (1) to form a long strip-shaped loop channel (12) inside the long pool (1). A bottom plate (13) is provided in each of the two parallel straight channels of the loop channel (12). The upper surface of the bottom plate (13) is inclined and the two bottom plates (13) are inclined in opposite directions. Two liquid lifting mechanisms (2) are respectively set at the high end of the two bottom plates (13) to lift the algal liquid in the loop channel (12) to the high end of the bottom plate (13) so that the algal liquid can flow downward along the upper surface of the bottom plate (13); the liquid lifting mechanism (2) includes a rotating wheel (21) rotatably installed between the elongated pool (1) and the partition plate (11) via a rotating shaft. Multiple partition plates (22) are evenly distributed in a ring on the outer surface of the rotating wheel (21), and an inner groove (23) is formed between two adjacent partition plates (22); a carbon dioxide aeration mechanism is provided on the liquid lifting mechanism (2), which includes a carbon dioxide cylinder and an air delivery hole opened on the rotating shaft. The carbon dioxide cylinder and the air delivery hole are connected by an air pipe. Multiple partition plates (22) 2) Each is equipped with an adaptive valve, which is connected to the gas delivery inner hole. When the adaptive valve is flipped into the arc groove (14), it opens to deliver carbon dioxide gas to the algal liquid in the corresponding inner groove (23). The adaptive valve includes a flat inner cavity opened inside the isolation plate (22). A first micro hole (261) is evenly distributed on one side of the flat inner cavity. A sealing plate (262) is slidably installed in the flat inner cavity. A second micro hole (263) corresponding to the first micro hole (261) is opened on the sealing plate (262). A piston (264) is slidably installed in the flat inner cavity. The piston (264) is fixed to the sealing plate (262). A spring (266) is installed between the inner side of the piston (264) and the cavity wall of the flat inner cavity. Two sets of disturbance mechanisms (3) are respectively set on the upper surface of the two base plates (13) to disturb the algal liquid and realize the algal liquid flowing in the form of turbulence.

2. The high-efficiency carbon-fixing microalgae cultivation device as described in claim 1, characterized in that, The upper end of the base plate (13) has an arc groove (14) that is adapted to the outer diameter of the liquid extraction mechanism (2), and the partition plate (11) is equipped with a drive system that drives the rotating wheel (21) to rotate.

3. The high-efficiency carbon-fixing microalgae cultivation device as described in claim 2, characterized in that, Both sides of the rotating wheel (21) have circular portions, and the arc-shaped groove (14) is provided with an arc-shaped sealing groove (24) that matches the circular portions.

4. The high-efficiency carbon-fixing microalgae cultivation device as described in claim 2, characterized in that, The piston (264) has a first roller (265) extending into a flat inner cavity mounted on its outer side. The lower end of the arc groove (14) has a guide arc surface (25) for pushing the first roller (265) into the flat inner cavity.

5. The high-efficiency carbon-fixing microalgae cultivation device as described in claim 4, characterized in that, The upper end of the arc groove (14) is provided with an arc-shaped clearance groove (27) corresponding to the first roller (265).

6. The high-efficiency carbon-fixing microalgae cultivation device as described in claim 1, characterized in that, The disturbance mechanism (3) includes a flip plate (39) that is flipped and installed on the upper surface of the base plate (13). A telescopic member is provided on the base plate (13) below the flip plate (39) to push the flip plate (39) to flip. A pulling member (38) is provided on the base plate (13) downstream of the flip plate (39). The pulling member (38) drives the flip plate (39) to flip angle in cooperation with the telescopic member based on the flow rate of the algal liquid. The flow rate of the algal liquid is positively correlated with the flip angle of the flip plate (39).

7. The high-efficiency carbon-fixing microalgae cultivation device as described in claim 6, characterized in that, The telescopic component includes an inner mounting hole (31) on the upper surface of the base plate (13). A flipping rod (32) is rotatably mounted in the inner mounting hole (31) via a rotating rod. An outer tube (33) is slidably sleeved on the upper end of the flipping rod (32). A second roller (36) that contacts the flip plate (39) is mounted on the upper end of the outer tube (33). An upwardly inclined guide plate (35) is fixed on the side wall of the inner mounting hole (31). A third roller (34) located on the upper side of the guide plate (35) is mounted on the side wall of the outer tube (33). The flipping rod (32) is connected to the pulling component (38) via a pull rope (310).

8. The high-efficiency carbon-fixing microalgae cultivation device as described in claim 7, characterized in that, The bottom of the flap (39) is fixed with a triangular block (37), and the second roller (36) is in contact with the inclined surface of the triangular block (37).

9. The high-efficiency carbon-fixing microalgae cultivation device as described in claim 7, characterized in that, The pulling member (38) includes a baffle plate (381) that is inclined and slidably disposed along the upper surface of the base plate (13). The baffle plate (381) has a through groove (382), and a flip plate (383) is hinged to the outlet of the through groove (382).

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