Algae culture device
By using a gas supply device in an algae breeding device to promote the circulating flow of water and algae, the problem of damage to algae by the stirring device is solved, the quality and production capacity of aquaculture are improved, and the water evaporation and aquaculture costs are reduced.
Patent Information
- Application Number
- CN202421323698.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-11
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-06-11
AI Technical Summary
In existing algae breeding devices, setting up a stirring device can easily cause damage to algae and reduce the breeding quality and production capacity.
An algae breeding device was designed, and carbon dioxide was introduced into the delivery tube by gas supply device to promote the circulation of water and algae, avoiding the damage to the algae by stirring.
It improves the breeding quality and production capacity of algae, reduces water evaporation, saves breeding costs, and effectively avoids infection of microorganisms in the environment.
Smart Images
Figure CN222907865U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an algae cultivation device, belonging to the technical field of algae cultivation. Background Art
[0002] The existing large-scale algae cultivation can be divided into two methods: open cultivation and closed cultivation. Open cultivation usually sets up cultivation ponds outdoors and directly uses sunlight as the light source. Although its cultivation cost is relatively low, the biggest problem is that it cannot effectively control environmental factors, with a large water evaporation rate, resulting in a large amount of water required and being easily infected by microorganisms in the environment. Closed cultivation can achieve a relatively high algal cell density, with high productivity, not easily infected, and a small water evaporation rate. However, the light efficiency of the light source, the gas exchange efficiency, and the stirring efficiency of the stirring paddle used in the cultivation space will also directly affect the productivity of algae. Summary of the Invention
[0003] The purpose of the utility model is to provide an algae cultivation device, which solves the main defect that the existing algae cultivation device is likely to damage algae due to the setting of a stirring device, reducing the quality and productivity of the cultivated algae.
[0004] To solve the above problems, the technical solution adopted by the present utility model is as follows: An algae cultivation device, comprising a water inlet tank, a water return tank, a delivery pipe, an air supply device and a light receiving pipe; one end of the bottom of the water inlet tank slopes upward, and a water inlet is provided at the bottom of the water inlet tank, and the water inlet is located on the side where the bottom of the water inlet tank slopes downward; a water return opening is provided at the bottom of the water return tank; the number of delivery pipes is more than one, one end of the delivery pipe communicates with the upper part of the water inlet tank, and the other end of the delivery pipe communicates with the lower part of the water return tank; the air supply device includes an air supply main pipe and connecting air pipes, and the number of connecting air pipes is the same as the number of delivery pipes, one end of the connecting air pipe communicates with the air supply main pipe, and the other end of the connecting air pipe communicates with the end of the delivery pipe for communicating with the water inlet tank respectively, and carbon dioxide is introduced into the delivery pipe through the air supply main pipe and the connecting air pipes in the use state; the light receiving pipe is made of a transparent material, one end of which communicates with the water inlet of the water inlet tank, and the other end communicates with the water return opening of the water return tank, and water and algae circulate in the water inlet tank and the water return tank through the light receiving pipe and the delivery pipe, and receive light for photosynthesis when flowing through the light receiving pipe. The present utility model introduces carbon dioxide into the delivery pipe through the air supply device. On the one hand, it provides carbon dioxide required for photosynthesis for algae. On the other hand, carbon dioxide flows upward in the delivery pipe to push the water in the delivery pipe to flow upward, so that the water and algae in the water return tank flow into the water inlet tank, and the water and algae in the water inlet tank then flow into the water return tank through the light receiving pipe, realizing the circulating flow of water and algae in the water inlet tank and the water return tank. The light receiving pipe receives light, providing the required light conditions for the photosynthesis of algae. The present utility model uses carbon dioxide to provide the driving force for the flow of water and algae, rather than using a stirring paddle to stir the water and algae to move, avoiding the damage to algae caused by stirring, improving the quality of the cultivated algae. At the same time, the circulating speed of water and algae is fast, the light receiving efficiency of the light receiving pipe is high, and the algae are less damaged by stirring, improving the production capacity of algae.
[0005] As a further improvement of the present utility model, the water inlet tank and the water return tank are fixedly formed by splicing plates, and the water inlet tank and the water return tank are separated by a partition in the middle. In the present utility model, the water inlet tank and the water return tank are of an integral structure, which is convenient for manufacturing while reducing the number of plates required for manufacturing the water inlet tank and the water return tank, and reducing the manufacturing cost of the present utility model.
[0006] As a further improvement of the present utility model, it further includes a water return pipe, which is vertically arranged in the water return tank, and its bottom end is bent towards the water return opening of the water return tank and communicates with the water return opening. The water and algae flowing through the light receiving pipe from the water inlet tank flow upward into the water return tank through the water return pipe, and then flow downward in the water return tank and return to the water inlet tank through the delivery pipe. The present utility model is provided with a water return pipe. When the water and algae in the light receiving pipe enter the water return tank, they are discharged into the water return tank from the upper part of the water return tank, which is more conducive to the circulation of water and algae in the water return tank.
[0007] As a further improvement of the present utility model, the conveying pipe includes a conveying unit A and a conveying unit B; the conveying unit A is horizontally arranged, and a straight joint is provided at one end thereof, and the straight joint is connected to a water tank joint A provided at the bottom of the return water tank; the conveying unit B is vertically arranged, and its bottom end is connected to the conveying unit A by a right-angle joint A, and the top end of the conveying unit B is connected to a water tank joint B provided at the upper part of the inlet water tank by a right-angle joint B, and the connecting air pipe is communicated with the lower part of the conveying unit B. In the present utility model, the conveying pipe is connected by right-angle joints, water tank joints and straight joints, which is convenient for the connection of the conveying pipe with the inlet water tank and the return water tank.
[0008] As a further improvement of the present utility model, the water tank joint A and the water tank joint B have the same structure, and both include a straight pipe, a nut head and a locking nut; the straight pipe is used to pass through the inlet water tank or the return water tank; the nut head is arranged on the straight pipe; the locking nut is arranged on the straight pipe and is in threaded cooperation with the straight pipe, and the locking nut and the nut head are respectively located inside and outside the inlet water tank or the return water tank, and the straight pipe is clamped on the inlet water tank or the return water tank. In the present utility model, the water tank joint A and the water tank joint B are fixedly connected to the return water tank and the inlet water tank conveniently through the nut head and the locking nut.
[0009] As a further improvement of the present utility model, a sealing gasket is further included. The sealing gasket is sleeved on the straight pipe, and the sealing gasket is located between the locking nut and the inlet water tank or the return water tank, and is used to enhance the connection sealing performance between the straight pipe and the inlet water tank or the return water tank. By providing the sealing gasket, the present utility model enhances the connection sealing performance between the water tank joint A and the water tank joint B and the return water tank and the inlet water tank.
[0010] As a further improvement of the present utility model, one end of the air supply main pipe is closed, and the other end is used to introduce carbon dioxide therein. One end of the connecting air pipe is communicated with the air supply main pipe by a connector, and an air valve is arranged at one end of the connecting air pipe for communicating with the conveying pipe. The present utility model uses the air supply main pipe to convey carbon dioxide to each connecting air pipe, and then conveys carbon dioxide from the connecting air pipe to the conveying pipe. Due to the arrangement of the air valve, the conveyance of carbon dioxide to each conveying pipe in the present utility model can be controlled separately.
[0011] As a further improvement of the present utility model, the light receiving pipe includes a light-transmitting pipe A, two light-transmitting pipes B and two light-transmitting pipes C. One ends of the two light-transmitting pipes B are respectively connected to both ends of the light-transmitting pipe A. The two light-transmitting pipes B are located on the same side of the light-transmitting pipe A and are both perpendicular to the light-transmitting pipe A. One ends of the two light-transmitting pipes C are respectively connected to the ends of the two light-transmitting pipes B far away from the light-transmitting pipe A. The two light-transmitting pipes C are arranged facing each other and are both parallel to the light-transmitting pipe A. The ends of the two light-transmitting pipes C far away from the light-transmitting pipe B are both bent in the direction away from the light-transmitting pipe A and are respectively communicated with the water inlet of the inlet water tank and the water return port of the return water tank. In the present utility model, the length of the light receiving pipe is large and the area of contacting sunlight is large, which is more beneficial to the growth of algae.
[0012] As a further improvement of the present utility model, it further includes a cover plate which is arranged on the tops of the water inlet tank and the water return tank, and at least one ventilation hole is provided on the cover plate at the positions of the water inlet tank and the water return tank respectively. By setting the cover plate to cover the water inlet tank and the water return tank, the present utility model can effectively reduce the foreign matters entering the water inlet tank and the water return tank, and the ventilation holes can timely discharge the excess carbon dioxide in the water inlet tank and the water return tank and the oxygen generated by the photosynthesis of algae, so as to maintain the gas pressure in the water inlet tank and the water return tank.
[0013] To sum up, the beneficial effects of the present utility model are as follows: The present utility model can provide sufficient growth space for the cultivation of algae. By using the method of using gas to promote the movement of liquid flow, it can not only improve the stirring efficiency, but also provide appropriate gas volume for the cultivation of algae. According to the scale of algae cultivation, an independent light receiving tube with a suitable length is configured to provide sufficient light for algae and meet the best growth efficiency of algae. Since the light receiving tube exposed to the environment is closed, the cultivation method of the present utility model can effectively avoid the infection of microorganisms in the environment, make the growth state of algae better, the product purer, and at the same time, the closed light receiving tube can avoid the evaporation of water, reduce the water evaporation in the cultivation process and save the cultivation cost. Description of the Drawings
[0014] Figure 1 is the front view of the present utility model.
[0015] Figure 2 is Figure 1 the A-A cross-sectional view of
[0016] Figure 3 is the top view of the present utility model.
[0017] Figure 4 is the three-dimensional structure diagram of the present utility model.
[0018] Figure 5 is the right view of the water inlet tank and the water return tank of the present utility model.
[0019] Figure 6 is Figure 5 the B-B cross-sectional view of
[0020] Figure 7 is Figure 5 the C-C cross-sectional view of
[0021] Figure 8 is the three-dimensional structure diagram of the gas supply device in the present utility model.
[0022] Figure 9 is the three-dimensional structure diagram of the water tank connector A and the water tank connector B in the present utility model.
[0023] Figure 10 This is a three-dimensional structural schematic diagram of the optical receiving tube in the present utility model.
[0024] Wherein: 1. Water inlet tank; 2. Water inlet; 3. Water return tank; 4. Water return port; 5. Delivery pipe; 6. Air supply device; 7. Main air supply pipe; 8. Connecting air pipe; 9. Optical receiving tube; 10. Partition board; 11. Water return pipe; 12. Delivery unit A; 13. Straight joint; 14. Water tank joint A; 15. Delivery unit B; 16. Right-angle joint A; 17. Right-angle joint B; 18. Water tank joint B; 19. Straight pipe; 20. Nut head; 21. Locking nut; 22. Sealing gasket; 23. Connecting head; 24. Air valve; 25. Light-transmitting pipe A; 26. Light-transmitting pipe B; 27. Light-transmitting pipe C; 28. Connecting short pipe. Specific embodiments
[0025] The following further describes the specific embodiments of the present utility model in conjunction with the accompanying drawings. Embodiment 1
[0026] As Figures 1 to 4 shown, the algae cultivation device includes a water inlet tank 1, a water return tank 3, a delivery pipe 5, an air supply device 6, and an optical receiving tube 9; in this embodiment, one end of the bottom of the water inlet tank 1 slopes upward, and a water inlet 2 is provided on one side of the bottom of the water inlet tank 1, and this water inlet 2 is located on the side where the bottom of the water inlet tank 1 slopes downward. By setting the bottom of the water inlet tank 1 to be inclined, the water in the water inlet tank 1 can flow downward and flow out from the water inlet 2, and no dead angle will be formed at a position far from the water inlet 2; in this embodiment, a water return port 4 is provided on one side of the bottom of the water return tank 3, and in this embodiment, the water return tank 3 is fixedly connected to the water inlet tank 1, and the water return port 4 and the water inlet 2 are provided on the same side of the water return tank 3 and the water inlet tank 1, as Figure 5 shown.
[0027] As Figure 1 and Figure 4 shown, the number of the delivery pipes 5 in this embodiment is more than one. As shown in the drawings of this application, the number of the delivery pipes 5 is nine. One end of the delivery pipe 5 is communicated with the upper part of the water inlet tank 1, and the other end of the delivery pipe 5 is communicated with the lower part of the water return tank 3. The water inlet tank 1 and the water return tank 3 are communicated through the delivery pipe 5, so that the water and algae in the water return tank 3 can enter the water inlet tank 1 through the delivery pipe 5; as Figure 8As shown in the figure, the gas supply device 6 in this embodiment includes a main gas supply pipe 7 and connecting gas pipes 8. The inner diameter of the main gas supply pipe 7 is larger than that of the connecting gas pipes 8. The number of the connecting gas pipes 8 is the same as that of the conveying pipes 5. One ends of the connecting gas pipes 8 are all communicated with the main gas supply pipe 7, and the other ends of the connecting gas pipes 8 are respectively communicated with one ends of the conveying pipes 5 used for communicating with the water inlet tank 1. In this embodiment, one connecting gas pipe 8 is connected to the lower part of each conveying pipe 5. In the working state, carbon dioxide is introduced into the conveying pipes 5 through the main gas supply pipe 7 and the connecting gas pipes 8, and the carbon dioxide flows upward in the conveying pipes 5, pushing the water and algae in the conveying pipes 5 upward for transportation, so as to transport the water and algae in the return water tank 3 to the water inlet tank 1. One end of the main gas supply pipe 7 in this embodiment is closed, and the other end is used for introducing carbon dioxide into it. One end of the connecting gas pipe 8 is communicated with the main gas supply pipe 7 by a connector 23, and a gas valve 24 is arranged at the end of the connecting gas pipe 8 for communicating with the conveying pipe 5.
[0028] The light receiving pipe 9 in this embodiment is made of a transparent material and is placed in an environment with good lighting conditions such as sunlight in the working state. One end of the light receiving pipe 9 is communicated with the water inlet 2 at the lower part of the water inlet tank 1, and the other end of the light receiving pipe 9 is communicated with the water return port 4 at the lower part of the return water tank 3. The water and algae are transported from the water inlet tank 1 to the return water tank 3 through the light receiving pipe 9 and the conveying pipe 5, so as to realize the circulation of water and algae in the water inlet tank 1 and the return water tank 3, and the algae carry out photosynthesis by receiving light when flowing through the light receiving pipe 9 along with the water flow.
[0029] The water inlet tank 1 and the return water tank 3 in this embodiment are fixedly formed by splicing plates. The plates for making the water inlet tank 1 and the return water tank 3 are both made of transparent materials. The water inlet tank 1 and the return water tank 3 are separated by a partition plate 10 in the middle, so that the water inlet tank 1 and the return water tank 3 form an integral structure. Embodiment 2
[0030] This embodiment is a further improvement based on Embodiment 1. Compared with Embodiment 1, this embodiment is also provided with a return water pipe 11, as Figure 6 shown, the return water pipe 11 is vertically arranged in the return water tank 3. The bottom end of the return water pipe 11 is bent towards the water return port 4 of the return water tank 3 and communicated with the water return port 4. The bent part of the bottom end of the return water pipe 11 in this embodiment passes through the water return port 4 and is sealed with the return water tank 3. One end of the return water pipe 11 extending out of the return water tank 3 is flange-connected to one end of the light receiving pipe 9. The water and algae flowing from the water inlet tank 1 through the light receiving pipe 9 in this embodiment flow upward into the return water tank 3 through the return water pipe 11, and then flow downward in the return water tank 3 and return to the water inlet tank 1 through the conveying pipe 5, so that the water and algae circulate in the water inlet tank 1 and the return water tank 3. The structures of the other parts in this embodiment are the same as those in Embodiment 1, and can be specifically referred to Embodiment 1, which will not be elaborated in this embodiment. Embodiment 3
[0031] This embodiment is a further improvement on Embodiment 2. Compared with Embodiment 2, the delivery pipe 5 in this embodiment includes a delivery unit A12 and a delivery unit B15; the delivery unit A12 and the delivery unit B15 in this embodiment are made of pipes with equal inner and outer diameters. Among them, the delivery unit A12 is horizontally arranged, and one end of the delivery unit A12 is provided with a straight joint 13 and sealed with glue. The straight joint 13 is connected to a water tank joint A14 arranged at the bottom of the return water tank 3. The delivery unit B15 is vertically arranged, and the bottom end of the delivery unit B15 is connected to one end of the delivery unit A12 away from the return water tank 3 by a right-angle joint A16. The delivery unit B15 and the right-angle joint A16 are sealed with glue. The top end of the delivery unit B15 is connected to a water tank joint B18 arranged above the water inlet tank 1 by a right-angle joint B17. The delivery unit B15 and the right-angle joint B17 are sealed with glue. The connecting air pipe 8 in this embodiment communicates with the lower part of the delivery unit B15. The delivery unit A12 and the delivery unit B15 in this embodiment can be made of light-transmitting materials such as glass, or can be made of light-impermeable materials such as metal.
[0032] The water tank joints A14 and B18 in this embodiment have the same structure, and both include a straight pipe 19, a nut head 20, and a locking nut 21. As Figure 9 shown, the straight pipe 19 is used to pass through the inner and outer sides of the water inlet tank 1 or the return water tank 3. The nut head 20 is arranged on the straight pipe 19, and the locking nut 21 is also arranged on the straight pipe 19 and is in threaded cooperation with the straight pipe 19. The locking nut 21 and the nut head 20 in this embodiment are respectively located on the inner and outer sides of the water inlet tank 1 or the return water tank 3, clamping the straight pipe 19 on the water inlet tank 1 or the return water tank 3 to achieve the fixation of the water tank joint A14 to the return water tank 3 and the fixation of the water tank joint B18 to the water inlet tank 1. Optimally, this embodiment is provided with a gasket 22. The gasket 22 can be made of rubber material. The gasket 22 is sleeved on the straight pipe 19, and the gasket 22 is located between the locking nut 21 and the water inlet tank 1 or the return water tank 3, which is used to enhance the connection tightness between the straight pipe 19 and the water inlet tank 1 or the return water tank 3 and prevent water from seeping out of the water inlet tank 1 and the return water tank 3 along the outer surface of the straight pipe 19. The structure of the remaining parts in this embodiment is the same as that in Embodiment 2. For details, reference can be made to Embodiment 2, and this embodiment will not be elaborated. Embodiment 4
[0033] This embodiment is a further improvement on Embodiment 3. Compared with Embodiment 3, the light receiving pipe 9 in this embodiment includes a light-transmitting pipe A25, two light-transmitting pipes B26, and two light-transmitting pipes C27, as Figure 1 , Figure 3 , Figure 4 and Figure 10As shown in the figure, one end of each of the two light-transmitting tubes B26 is respectively connected to both ends of the light-transmitting tube A25, and the connection part between the two is in arc transition. The two light-transmitting tubes B26 are located on the same side of the light-transmitting tube A25 and are both perpendicular to the light-transmitting tube A25. One end of each of the two light-transmitting tubes C27 is respectively connected to one end of the two light-transmitting tubes B26 away from the light-transmitting tube A25, and the connection part between the two is in arc transition. The two light-transmitting tubes C27 are arranged facing each other and are both parallel to the light-transmitting tube A25. One end of the two light-transmitting tubes C27 away from the light-transmitting tube B26 is bent towards the direction away from the light-transmitting tube A25, and is respectively communicated with the water inlet 2 of the water inlet tank 1 and the water return port 4 of the water return tank 3, as Figure 7 shown. In this embodiment, a connecting short tube 28 is provided at the water inlet 2. The end parts of the two light-transmitting tubes C27 are respectively flange-connected to the end part of the connecting short tube 28 and the end part of the water return pipe 11. The structure of the rest of this embodiment is the same as that of Embodiment 3, and specific details can be referred to Embodiment 3, so this embodiment will not be elaborated here. Embodiment 5
[0034] This embodiment is a further improvement based on Embodiment 4. Compared with Embodiment 4, this embodiment also provides a cover plate (not shown in the figure). The cover plate is covered on the tops of the water inlet tank 1 and the water return tank 3, and at least one air vent (not shown in the figure) is respectively opened on the cover plate at the positions of the water inlet tank 1 and the water return tank 3. In this embodiment, one air vent can be opened on each side of the cover plate at the positions of the water inlet tank 1 and the water return tank 3. The cover plate can effectively reduce the particles or other foreign matters entering the water inlet tank 1 and the water return tank 3, and the air vents can discharge the excess carbon dioxide and the oxygen generated by the photosynthesis of algae in the water inlet tank 1 and the water return tank 3. The structure of the rest of this embodiment is the same as that of Embodiment 4, and specific details can be referred to Embodiment 4, so this embodiment will not be elaborated here.
[0035] In the present utility model, air containing carbon dioxide is introduced into the algal liquid in the conveying unit B15 through the air valve 24 of the air supply device 6. The gas moves upward under the action of buoyancy, and the moving gas drives the liquid in contact with the gas to move upward, forming an upward liquid flow. The flowing liquid enters the water inlet tank 1 at the upper end of the conveying unit B15. The liquid flow entering the water inlet tank 1 flows along the water inlet tank 1 towards the water inlet 2, enters the light receiving tube 9 through the water inlet 2, and continues to flow in the light receiving tube 9. During the flowing process, the algae in the liquid flow receive light for photosynthesis. The liquid flow enters the water return pipe 11 in the water return tank 3 through the water return port 4, flows into the upper layer of the water return tank 3 through the water return pipe 11, moves downward along the water return tank 3, and enters the conveying unit B15 again through the conveying unit A12, forming a closed cycle. By adjusting the opening degree of the air valve 24, the flow rate of the liquid flow can be adjusted by changing the amount of gas entering the conveying unit B15.
[0036] Parts not specifically described in the above specification are all prior arts or can be achieved by prior arts. Moreover, the specific implementation cases described in this utility model are only the preferred implementation cases of this utility model, and are not used to limit the implementation scope of this utility model. That is, equivalent changes and modifications made according to the content within the scope of this utility model patent should all be regarded as the technical scope of this utility model.
Claims
1. An algae cultivation device, characterized in that: include A water inlet box (1), wherein one end of the bottom of the water inlet box (1) is inclined upwards, and a water inlet (2) is provided at the bottom of the water inlet box (1), and the water inlet (2) is located at a side of the bottom of the water inlet box (1) that is inclined downwards; A water return tank (3), wherein a water return port (4) is provided at the bottom of the water return tank (3); A delivery pipe (5), the number of the delivery pipe (5) being more than one, one end of the delivery pipe (5) being connected to the upper part of the water inlet tank (1), and the other end of the delivery pipe (5) being connected to the lower part of the water return tank (3); An air supply device (6), the air supply device (6) comprising an air supply main pipe (7) and a connecting air pipe (8), the number of the connecting air pipes (8) being the same as the number of the delivery pipe (5), one end of the connecting air pipe (8) being connected to the air supply main pipe (7), and the other end of the connecting air pipe (8) being connected to one end of the delivery pipe (5) for connecting to the water inlet tank (1), and in a use state, carbon dioxide is ventilated into the delivery pipe (5) through the air supply main pipe (7) and the connecting air pipe (8); A light receiving tube (9) is made of a transparent material, one end of which is connected to the water inlet (2) of the water inlet tank (1), and the other end of which is connected to the water return port (4) of the water return tank (3). Water and algae circulate in the water inlet tank (1) and the water return tank (3) through the light receiving tube (9) and the delivery tube (5), and receive light when flowing through the light receiving tube (9) to perform photosynthesis.
2. The algae cultivation device according to claim 1, characterized in that: The water inlet tank (1) and the water return tank (3) are formed by splicing and fixing plates, and the water inlet tank (1) and the water return tank (3) are separated by a partition plate (10) in the middle.
3. The algae cultivation device according to claim 1, characterized in that: The invention also comprises a return pipe (11), which is vertically arranged in the return tank (3), and the bottom end of which is bent toward the return port (4) of the return tank (3) and communicates with the return port (4). Water and algae flowing from the inlet tank (1) through the light receiving tube (9) flow upwards through the return pipe (11) into the return tank (3), and then flow downwards in the return tank (3) through the delivery pipe (5) and return to the inlet tank (1).
4. The algae cultivation device according to claim 1, characterized in that: The delivery pipe (5) includes A conveying unit A (12), the conveying unit A (12) is arranged horizontally, and a straight connector (13) is arranged at one end thereof, and the straight connector (13) is connected to a water tank connector A (14) arranged at the bottom of the return water tank (3); The conveying unit B (15) is arranged vertically, and its bottom end is connected to the conveying unit A (12) by a right-angle joint A (16). The top end of the conveying unit B (15) is connected to a water tank joint B (18) arranged on the upper part of the water inlet tank (1) by a right-angle joint B (17). The connecting air pipe (8) is connected to the lower part of the conveying unit B (15).
5. The algae cultivation device according to claim 4, characterized in that: The water tank connector A (14) and the water tank connector B (18) have the same structure, both comprising A direct pipe (19), the direct pipe (19) is used to pass through the water inlet tank (1) or the water return tank (3); A nut head (20), the nut head (20) being arranged on the direct pipe (19); A locking nut (21) is disposed on the direct pipe (19) and is threadably coupled to the direct pipe (19). The locking nut (21) and the nut head (20) are respectively located on the inner and outer sides of the water inlet tank (1) or the water return tank (3) to clamp the direct pipe (19) onto the water inlet tank (1) or the water return tank (3).
6. The algae cultivation device according to claim 5, characterized in that: Also includes A sealing gasket (22) is sleeved on the direct pipe (19), and the sealing gasket (22) is located between the locking nut (21) and the water inlet tank (1) or the water return tank (3), and is used to enhance the sealing performance of the connection between the direct pipe (19) and the water inlet tank (1) or the water return tank (3).
7. The algae cultivation device according to claim 1, characterized in that: One end of the gas supply main pipe (7) is closed, and the other end is used to introduce carbon dioxide therein. One end of the connecting air pipe (8) is connected to the gas supply main pipe (7) via a connector (23). An air valve (24) is provided at one end of the connecting air pipe (8) for connecting to the delivery pipe (5).
8. The algae cultivation device according to claim 1, characterized in that: The light receiving tube (9) includes A light-transmitting tube A (25), two light-transmitting tubes B (26) and two light-transmitting tubes C (27), one end of the two light-transmitting tubes B (26) being connected to two ends of the light-transmitting tube A (25), the two light-transmitting tubes B (26) being located on the same side of the light-transmitting tube A (25) and being perpendicular to the light-transmitting tube A (25), one end of the two light-transmitting tubes C (27) being connected to one end of the two light-transmitting tubes B (26) away from the light-transmitting tube A (25), the two light-transmitting tubes C (27) being arranged facing each other and being parallel to the light-transmitting tube A (25), one end of the two light-transmitting tubes C (27) away from the light-transmitting tube B (26) being bent in a direction away from the light-transmitting tube A (25), and being connected to a water inlet (2) of a water inlet tank (1) and a water return port (4) of a water return tank (3), respectively.
9. The algae cultivation device according to claim 1, characterized in that: Also includes A cover plate is arranged on the top of the water inlet tank (1) and the water return tank (3), and at least one air vent is provided on the cover plate at each of the water inlet tank (1) and the water return tank (3).