Multifunctional breeding box for haematococcus pluvialis

Abstract

The application discloses a multifunctional Haematococcus pluvialis cultivation box and belongs to the technical field of algae cultivation, which comprises a box body, a first taking and placing door arranged on the top of the box body, a second taking and placing door arranged on the front side of the box body, an installation frame arranged in the box body, an annular groove arranged in the middle of the inner wall of the installation frame, and a plurality of installation grooves arranged around the middle part of the installation frame. The application adopts a driving structure composed of a stepping motor, a driving gear and a driven gear to synchronously drive the rotation of a containing cylinder and a light guide plate in the containing cylinder. The rotation movement simultaneously realizes two functions, one is to drive the automatic reciprocating flow of a culture solution in a unique circulating channel composed of staggered light guide plates by using the gravitational potential difference, and the other is to make the light guide plate periodically sweep a lamp tube fixed on the installation frame, thereby creating an intermittent light and dark alternating illumination environment.

Description

Technical Field

[0001] This invention relates to a multifunctional culture box for Haematococcus pluvialis, belonging to the field of algae cultivation technology. Background Technology

[0002] Haematococcus pluvialis can efficiently synthesize natural astaxanthin, which has significant economic value and is therefore often cultivated artificially. To achieve large-scale and controlled cultivation, specialized cultivation equipment is required to provide suitable lighting, mixing, and environmental control conditions.

[0003] In existing technologies, photobioreactors used for microalgae cultivation mainly include flat-plate, tubular, and column types. For reactors requiring rotational operation, vertically placed cylindrical containers are typically used, with internal stirring paddles or relying on the container's own rotation for mixing. Some improved designs add guide plates or baffles to the inner wall or central axis of the container to optimize the flow field. Illumination is usually achieved by directly irradiating the container surface with an external light source or by providing illumination through a built-in fixed light source. Gas exchange is generally accomplished through a permeable membrane at the top or an aeration head at the bottom; some systems are equipped with independent exhaust valves to maintain pressure balance.

[0004] However, the above solution has the following shortcomings in practical use:

[0005] The liquid circulation in the aforementioned devices mostly relies on motor-driven mechanical stirring or external circulation pumps, which not only increases energy consumption and equipment complexity, but also may cause shear damage to fragile algal cells due to high-speed stirring.

[0006] The above-mentioned devices mostly use constant illumination, which cannot effectively simulate the alternating light and dark rhythm required to promote astaxanthin synthesis, and the illumination is difficult to uniformly illuminate Haematococcus pluvialis at different depths. Summary of the Invention

[0007] To solve the above-mentioned technical problems, the present invention provides a multifunctional culture box for Haematococcus pluvialis.

[0008] The technical solution adopted by this invention to solve its technical problem is:

[0009] A multifunctional culture box for Haematococcus pluvialis includes a box body, a first access door on the top of the box body, a second access door on the front side of the box body, an installation frame inside the box body, an annular groove in the middle of the inner wall of the installation frame, and multiple installation slots in the inner wall of the installation frame, all of which are partially distributed around the installation frame and are connected to the annular groove. The installation frame is eccentrically rotatably connected to the box body, and a positioning mechanism for positioning the installation frame horizontally or vertically is provided between the box body and the installation frame.

[0010] The mounting frame is equipped with a container tube made of transparent material. The end of the container tube is detachably equipped with a sealing cap. A circumferential circulation mechanism is provided between the mounting frame and the container tube to allow the culture medium inside the container tube to flow back and forth and to illuminate the container tube.

[0011] Preferably, the positioning mechanism includes a first positioning component and a second positioning component. The end of the first positioning component is fixedly connected to the inner wall of the box, and the end of the second positioning component is fixedly connected to the mounting frame. The ends of the first positioning component and the second positioning component match each other, and the top of the first positioning component matches the bottom of the mounting frame.

[0012] In this design, during the initial loading state, the mounting frame is rotated to a vertical position, where its bottom is supported by the top of the first positioning member fixed to the inner wall of the chamber. In this state, culture medium can be injected into the container to approximately three-quarters of its capacity by opening the sealing cap. After filling, the sealing cap is closed. Subsequently, the mounting frame is rotated 90 degrees to a horizontal working position. At this point, the end of the second positioning member fixed to the mounting frame abuts against the end of the first positioning member, thus completing the lateral positioning of the mounting frame and ensuring stability during subsequent rotation.

[0013] Preferably, the circumferential circulation mechanism includes a circulating flow structure, a reciprocating lighting structure, and a driving structure;

[0014] The circulating flow structure is used to circulate the culture medium inside the container.

[0015] The reciprocating lighting structure is used to illuminate the culture medium inside the container repeatedly.

[0016] The drive structure is used to drive the receiving cylinder to rotate within the mounting frame.

[0017] Preferably, the circulating flow structure includes a fixed cylinder and a light guide plate, wherein the fixed cylinder is provided with a sealing cover through the middle, and the fixed cylinder is fixedly connected to the sealing cover;

[0018] The light guide plate is disposed inside the receiving cylinder, and the side wall of the light guide plate is fixedly connected to the inner wall of the receiving cylinder. One side of the side wall of the light guide plate abuts against the fixed cylinder.

[0019] The number of light guide plates is set to multiple, and the multiple light guide plates are distributed around the center of the receiving cylinder. Between two adjacent light guide plates, the end of one light guide plate abuts against the inner wall of the receiving cylinder, and the side wall of the other light guide plate abuts against the sealing cover.

[0020] In this design, the fixed cylinder runs through and is fixed to the sealing cover. Multiple light guide plates are distributed around the center of the receiving cylinder, with one side fixed to the inner wall of the receiving cylinder and the other side abutting against the fixed cylinder. Crucially, the ends of two adjacent light guide plates abut against the inner walls of the receiving cylinder and the sealing cover, respectively, creating an independent small compartment between them. Due to this staggered arrangement, all the small compartments are connected in series through the gaps between the ends of the light guide plates and the inner walls of the cylinder / cover, forming a unique, interconnected spiral circulation channel inside the receiving cylinder.

[0021] As the container rotates, the small chambers above the liquid level are lifted along with the container. Once these small chambers reach their highest positions, under the influence of gravity, the culture medium inside flows downwards through the gaps between the light guide plates to the lower chambers, thus driving the continuous and reciprocating flow of the culture medium throughout the circulation channel without the need for additional pumps.

[0022] Preferably, the reciprocating lighting structure includes lamp tubes, wherein the lamp tubes are configured in multiple groups, and the multiple groups of lamp tubes are respectively disposed in multiple mounting slots, wherein each group of lamp tubes contains two lamp tubes, and neither of the two lamp tubes is in contact with the annular slot;

[0023] The lamp tube is matched with the light guide plate;

[0024] In this design, the inner wall of the mounting frame has multiple mounting slots, each containing a set of lamps. When the container rotates, the fixed lamps sequentially illuminate the light guide plates that rotate synchronously with the container. Because the light guide plates periodically enter and leave the illumination area of ​​the lamps, the culture environment inside the container is in a regular, intermittent state of alternating light and dark, effectively promoting the accumulation of astaxanthin in Haematococcus pluvialis.

[0025] Preferably, the drive structure includes a rotating shaft and a mounting component. The rotating shaft passes through the mounting frame in the middle and is rotatably connected to the mounting frame. One end of the rotating shaft is fixedly connected to the receiving cylinder, and the other end of the rotating shaft is fixedly connected to a driven gear.

[0026] The end of the mounting component is fixedly connected to the mounting frame. The mounting component is L-shaped. A stepper motor is fixedly connected to the side wall of the mounting component. A drive gear is fixedly connected to the output end of the stepper motor. The drive gear meshes with the driven gear.

[0027] In this scheme, the stepper motor in the drive structure drives the rotating shaft and the housing cylinder fixed to it to rotate at a low speed around its central axis through the meshing of the driving gear and the driven gear.

[0028] Preferably, an aeration mechanism is provided between the fixed cylinder and the receiving cylinder, and the aeration mechanism includes an air inlet structure and an air outlet structure;

[0029] The air intake structure includes an air pump and a connecting chamber. The output end of the air pump is connected to the end of the receiving cylinder. The end of the connecting chamber passes through the fixed cylinder. Multiple aeration holes are provided through the side of the connecting chamber facing the outside of the fixed cylinder. A one-way valve is provided on the side of the connecting chamber facing the inside of the fixed cylinder. The number of connecting chambers is set to multiple, and the multiple connecting chambers are distributed around the center of the fixed cylinder.

[0030] In this design, the output of the air pump is connected to the end of the receiving cylinder. After being pressurized by the air pump, the gas enters multiple interconnected chambers distributed around the fixed cylinder. Each interconnected chamber has an aeration hole on the side facing outwards from the fixed cylinder, and a one-way valve on the side facing inwards. Under the pressure of the air pump, the one-way valve opens, and the gas is evenly released through the aeration holes into each small chamber formed by adjacent light guide plates, providing oxygen and carbon dioxide for the algae.

[0031] Preferably, the exhaust structure includes a stop block and an exhaust pipe, the sidewall of the stop block is fixedly connected to the inner wall of the annular groove, the stop block is located at the top of the annular groove, and the stop block is arc-shaped;

[0032] The exhaust pipe is provided through the receiving cylinder at its end. A partition is fixedly connected to the middle of the exhaust pipe. A push rod is provided through the middle of the partition. Multiple exhaust holes are also provided through the middle of the partition. The push rod is slidably connected to the partition. A limit member is fixedly connected to the top of the push rod. A sealing member is fixedly connected to the bottom of the push rod. A return spring is sleeved on the outer periphery of the push rod. The top of the return spring abuts against the limit member. The bottom of the return spring abuts against the partition. A guide wheel is rotatably provided on the top of the limit member. The guide wheel matches the push block.

[0033] In this design, the venting function is achieved through the coordinated action of a stop block and an venting cylinder. The stop block is arc-shaped and fixed to the top of the annular groove of the mounting frame. The venting cylinder penetrates the receiving cylinder and contains a partition with a vent hole, a sliding stop rod, a seal, a return spring, and a guide wheel at the top. During the rotation of the receiving cylinder, when the venting cylinder reaches its highest point with the cylinder body, the guide wheel at the top contacts and is compressed against the fixed arc-shaped stop block, thus overcoming the spring force of the return spring and causing the stop rod and the seal at the bottom to move downwards. This action causes the seal to disengage from the vent hole, opening the vent hole. Since the vent hole is now at the highest point of the entire receiving cylinder, excess gas inside can be discharged unidirectionally through the vent hole under pressure, while the culture medium will not flow out from the vent hole at the highest point due to gravity. When the venting cylinder continues to rotate away from the highest point with the cylinder body, the guide wheel disengages from the stop block, the return spring pushes the seal to return to its original position, resealing the vent hole and maintaining the system's airtightness.

[0034] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0035] 1. This invention employs a drive structure consisting of a stepper motor, a driving gear, and a driven gear to synchronously drive the container cylinder and its internal light guide plate to rotate. This rotational motion simultaneously achieves two functions: first, it utilizes the gravitational potential energy difference to drive the culture medium to automatically reciprocate within the unique circulation channel formed by the staggered light guide plates, eliminating the need for an additional circulation pump; second, it allows the light guide plate to periodically pass over the lamp tube fixed on the mounting frame, creating an intermittent alternating light and dark environment.

[0036] 2. In this invention, the culture medium within the container is separated and evenly distributed within each independent small chamber by multiple light guide plates. As the light guide plates rotate with the container, their transparent material effectively and evenly scatters the light from the external lamps into their respective small chambers. Combined with an intermittent alternating light and dark illumination pattern, this not only ensures the uniformity of illumination throughout the entire culture area, avoiding localized overexposure or insufficient light, but also effectively simulates the natural light environment, significantly stimulating Haematococcus pluvialis to accumulate astaxanthin and increasing the yield of the target product.

[0037] 3. The present invention designs a linkage exhaust structure. Through the cooperation of the stop block and the guide wheel at the top of the exhaust cylinder, the exhaust port is automatically opened to release pressure when the receiving cylinder rotates to the highest point; in other positions, the exhaust port is automatically closed by the sealing element. This design ensures that the gas can be discharged in a unidirectional and controllable manner, while completely preventing the leakage of culture medium and the intrusion of external contaminants, and maintaining a closed and sterile culture environment. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0039] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0040] Figure 2 This is a schematic diagram of the vertical mounting frame of the present invention;

[0041] Figure 3 This is a schematic diagram of the mounting frame of the present invention in a horizontal position;

[0042] Figure 4 This is an exploded view of the circumferential circulation mechanism of the present invention;

[0043] Figure 5 This is a schematic diagram of the mounting frame structure of the present invention;

[0044] Figure 6 This is a schematic diagram of the receiving cylinder structure of the present invention;

[0045] Figure 7 This is a schematic diagram of the interconnected compartment structure of the present invention;

[0046] Figure 8 This is a cross-sectional view of the exhaust structure of the present invention;

[0047] Figure 9 For the present invention Figure 3 Enlarged view of the A-section structure;

[0048] Figure 10 For the present invention Figure 5 Enlarged view of the structure of part B.

[0049] In the picture:

[0050] 1. Box body; 11. First loading / unloading door; 12. Second loading / unloading door; 13. Mounting frame; 14. Annular groove; 15. Mounting groove; 16. Receiving cylinder; 17. Sealing cover;

[0051] 2. Positioning mechanism; 21. First positioning component; 22. Second positioning component;

[0052] 3. Circular circulation mechanism;

[0053] 1. Circulating flow structure; 311. Fixed cylinder; 312. Light guide plate;

[0054] 2. Reciprocating lighting structure; 321. Lamp tube;

[0055] 33. Drive structure; 331. Rotating shaft; 332. Mounting component; 333. Driven gear; 334. Stepper motor; 335. Driving gear;

[0056] 1. Aeration mechanism;

[0057] 1. Air intake structure; 411. Air pump; 412. Connecting chamber; 413. Aeration port; 414. One-way valve;

[0058] 42. Exhaust structure; 421. Abutment block; 422. Exhaust pipe; 423. Baffle plate; 424. Abutment rod; 425. Exhaust hole; 426. Limiting component; 427. Sealing component; 428. Return spring; 429. Guide wheel. Detailed Implementation

[0059] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0060] Please see Figure 1-3 The present invention provides a technical solution:

[0061] A multifunctional culture box for Haematococcus pluvialis includes a box body 1. The top of the box body 1 is provided with a first access door 11, and the front side of the box body 1 is provided with a second access door 12. The box body 1 is provided with an installation frame 13 inside. The inner wall of the installation frame 13 is provided with an annular groove 14 in the middle. The inner wall of the installation frame 13 is also provided with multiple installation grooves 15. The multiple installation grooves 15 are distributed around the middle part of the installation frame 13 and are connected to the annular groove 14. The installation frame 13 is eccentrically rotatably connected to the box body 1. A positioning mechanism 2 is provided between the box body 1 and the installation frame 13 for positioning the installation frame 13 horizontally or vertically.

[0062] The mounting frame 13 is provided with a container 16 inside. The container 16 is made of transparent material. A sealing cap 17 is detachably provided at the end of the container 16. A circumferential circulation mechanism 3 is provided between the mounting frame 13 and the container 16 to allow the culture medium in the container 16 to flow back and forth and to illuminate the container 16.

[0063] For further information, please refer to [link / reference]. Figure 9 The positioning mechanism 2 includes a first positioning element 21 and a second positioning element 22. The end of the first positioning element 21 is fixedly connected to the inner wall of the housing 1, and the end of the second positioning element 22 is fixedly connected to the mounting frame 13. The ends of the first positioning element 21 and the second positioning element 22 match each other, and the top of the first positioning element 21 matches the bottom of the mounting frame 13.

[0064] For further information, please refer to [link / reference]. Figure 1 and 4 The circumferential circulation mechanism 3 includes a circulating flow structure 31, a reciprocating lighting structure 32, and a drive structure 33;

[0065] The circulating flow structure 31 is used to circulate the culture medium inside the container 16.

[0066] The reciprocating lighting structure 32 is used to illuminate the culture medium inside the container repeatedly;

[0067] The drive structure 33 is used to drive the receiving cylinder 16 to rotate within the mounting frame 13.

[0068] For further information, please refer to [link / reference]. Figure 6 The circulating flow structure 31 includes a fixed cylinder 311 and a light guide plate 312. The fixed cylinder 311 is provided with a sealing cover 17 through the middle, and the fixed cylinder 311 is fixedly connected to the sealing cover 17.

[0069] The light guide plate 312 is disposed inside the receiving cylinder 16. The side wall of the light guide plate 312 is fixedly connected to the inner wall of the receiving cylinder 16, and one side of the side wall of the light guide plate 312 abuts against the fixed cylinder 311.

[0070] The number of light guide plates 312 is set to multiple, and the multiple light guide plates 312 are distributed around the center of the receiving cylinder 16. Between two adjacent light guide plates 312, the end of one light guide plate 312 abuts against the inner wall of the receiving cylinder 16, and the side wall of the other light guide plate 312 abuts against the sealing cover 17.

[0071] For further information, please refer to [link / reference]. Figure 5 The reciprocating lighting structure 32 includes lamp tubes 321, which are configured in multiple groups. The multiple groups of lamp tubes 321 are respectively arranged in multiple mounting slots 15. Each group of lamp tubes 321 has two lamp tubes, and neither of the two lamp tubes 321 is in contact with the annular slot 14.

[0072] The lamp tube 321 is matched with the light guide plate 312.

[0073] For further information, please refer to [link / reference]. Figure 9 The drive structure 33 includes a rotating shaft 331 and a mounting component 332. The rotating shaft 331 is disposed through the mounting frame 13 in the middle. The rotating shaft 331 is rotatably connected to the mounting frame 13. One end of the rotating shaft 331 is fixedly connected to the receiving cylinder 16, and the other end of the rotating shaft 331 is fixedly connected to a driven gear 333.

[0074] The end of the mounting component 332 is fixedly connected to the mounting frame 13. The mounting component 332 is L-shaped. A stepper motor 334 is fixedly connected to the side wall of the mounting component 332. A drive gear 335 is fixedly connected to the output end of the stepper motor 334. The drive gear 335 meshes with the driven gear 333.

[0075] For further information, please refer to [link / reference]. Figure 4 and 7 An aeration mechanism 4 is provided between the fixed cylinder 311 and the receiving cylinder 16. The aeration mechanism 4 includes an air inlet structure 41 and an exhaust structure 42.

[0076] The air intake structure 41 includes an air pump 411 and a connecting chamber 412. The output end of the air pump 411 is connected to the end of the receiving cylinder 16. The end of the connecting chamber 412 is provided through the fixed cylinder 311. Multiple aeration holes 413 are provided through the side of the connecting chamber 412 facing the outside of the fixed cylinder 311. A one-way valve 414 is provided on the side of the connecting chamber 412 facing the inside of the fixed cylinder 311. The number of connecting chambers 412 is set to multiple, and the multiple connecting chambers 412 are distributed around the center of the fixed cylinder 311.

[0077] For further information, please refer to [link / reference]. Figure 6 , 8 10. The exhaust structure 42 includes a stop block 421 and an exhaust pipe 422. The side wall of the stop block 421 is fixedly connected to the inner wall of the annular groove 14. The stop block 421 is located at the top of the annular groove 14 and is arc-shaped.

[0078] The exhaust pipe 422 is provided with a receiving cylinder 16 through its end. A partition 423 is fixedly connected to the middle of the exhaust pipe 422. A push rod 424 is provided through the middle of the partition 423. Multiple exhaust holes 425 are also provided through the middle of the partition 423. The push rod 424 is slidably connected to the partition 423. A limit member 426 is fixedly connected to the top of the push rod 424. A sealing member 427 is fixedly connected to the bottom of the push rod 424. A return spring 428 is sleeved on the outer periphery of the push rod 424. The top of the return spring 428 abuts against the limit member 426. The bottom of the return spring 428 abuts against the partition 423. A guide wheel 429 is rotatably provided on the top of the limit member 426. The guide wheel 429 matches the push block 421.

[0079] The workflow of this embodiment is as follows:

[0080] First, the mounting frame 13 is placed vertically and supported by the first positioning member 21. Culture medium is injected into the container 16 and sealed. Next, the mounting frame 13 is rotated to a horizontal position, and the second positioning member 22 completes the positioning. Then, the stepper motor 334 is started, driving the container 16 to rotate at a low speed. During rotation, gravity causes the culture medium to flow continuously within the single circulation channel formed by the staggered light guide plates 312. Simultaneously, a fixed array of lamps 321 periodically irradiates the rotating light guide plates 312, creating an intermittent light-dark environment. At the same time, the air pump 411 aerates each small chamber evenly through the connecting chamber 412 with a one-way valve 414. When the container 16 rotates to the top, the exhaust pipe 422 is triggered by the abutment block 421, briefly opening the exhaust port 425 to release excess gas, and then automatically closing. Through the coordinated operation of the above systems, this device achieves the liquid circulation, dynamic illumination, and controllable gas exchange required for Haematococcus pluvialis cultivation.

[0081] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multifunctional culture box for Haematococcus pluvialis, characterized in that, The box includes a housing (1), a first loading and unloading door (11) is provided on the top of the housing (1), a second loading and unloading door (12) is provided on the front side of the housing (1), an installation frame (13) is provided inside the housing (1), an annular groove (14) is provided in the middle of the inner wall of the installation frame (13), and multiple installation grooves (15) are also provided in the inner wall of the installation frame (13). The multiple installation grooves (15) are all distributed around the middle part of the installation frame (13), and the multiple installation grooves (15) are all connected to the annular groove (14). The installation frame (13) is eccentrically rotatably connected to the housing (1), and a positioning mechanism (2) for positioning the installation frame (13) horizontally or vertically is provided between the housing (1) and the installation frame (13). The mounting frame (13) is provided with a container (16) inside. The container (16) is made of transparent material. A sealing cap (17) is detachably provided at the end of the container (16). A circumferential circulation mechanism (3) is provided between the mounting frame (13) and the container (16) for reciprocating flow of the culture medium in the container (16) and reciprocating illumination into the container (16).

2. The multifunctional culture box for Haematococcus pluvialis according to claim 1, characterized in that, The positioning mechanism (2) includes a first positioning element (21) and a second positioning element (22). The end of the first positioning element (21) is fixedly connected to the inner wall of the box (1), and the end of the second positioning element (22) is fixedly connected to the mounting frame (13). The end of the first positioning element (21) matches the end of the second positioning element (22), and the top of the first positioning element (21) matches the bottom of the mounting frame (13).

3. The multifunctional culture box for Haematococcus pluvialis according to claim 1, characterized in that, The circumferential circulation mechanism (3) includes a circulation flow structure (31), a reciprocating lighting structure (32), and a drive structure (33). The circulating flow structure (31) is used to circulate the culture medium in the container (16); The reciprocating lighting structure (32) is used to illuminate the culture medium inside the container repeatedly; The drive structure (33) is used to drive the receiving cylinder (16) to rotate within the mounting frame (13).

4. The multifunctional culture box for Haematococcus pluvialis according to claim 3, characterized in that, The circulating flow structure (31) includes a fixed cylinder (311) and a light guide plate (312). The fixed cylinder (311) is provided with a sealing cover (17) through the middle, and the fixed cylinder (311) is fixedly connected to the sealing cover (17). The light guide plate (312) is disposed inside the receiving cylinder (16), the side wall of the light guide plate (312) is fixedly connected to the inner wall of the receiving cylinder (16), and one side of the light guide plate (312) abuts against the fixed cylinder (311). The number of light guide plates (312) is set to multiple, and the multiple light guide plates (312) are distributed around the center of the receiving cylinder (16). Between two adjacent light guide plates (312), the end of one of the light guide plates (312) abuts against the inner wall of the receiving cylinder (16), and the side wall of the other light guide plate (312) abuts against the sealing cover (17).

5. A multifunctional culture box for Haematococcus pluvialis according to claim 3, characterized in that, The reciprocating lighting structure (32) includes lamp tubes (321), which are arranged in multiple groups. The multiple groups of lamp tubes (321) are respectively arranged in multiple mounting slots (15). Each group of lamp tubes (321) has two lamp tubes (321), and neither of the two lamp tubes (321) is in contact with the annular slot (14). The lamp tube (321) is matched with the light guide plate (312).

6. A multifunctional culture box for Haematococcus pluvialis according to claim 3, characterized in that, The drive structure (33) includes a rotating shaft (331) and a mounting component (332). The rotating shaft (331) is disposed through the mounting frame (13) in the middle. The rotating shaft (331) is rotatably connected to the mounting frame (13). One end of the rotating shaft (331) is fixedly connected to the receiving cylinder (16), and the other end of the rotating shaft (331) is fixedly connected to a driven gear (333). The end of the mounting component (332) is fixedly connected to the mounting frame (13). The mounting component (332) is L-shaped. A stepper motor (334) is fixedly connected to the side wall of the mounting component (332). A drive gear (335) is fixedly connected to the output end of the stepper motor (334). The drive gear (335) meshes with the driven gear (333).

7. A multifunctional culture box for Haematococcus pluvialis according to claim 4, characterized in that, An aeration mechanism (4) is provided between the fixed cylinder (311) and the receiving cylinder (16), and the aeration mechanism (4) includes an air inlet structure (41) and an exhaust structure (42). The air intake structure (41) includes an air pump (411) and a connecting chamber (412). The output end of the air pump (411) is connected to the end of the receiving cylinder (16). The end of the connecting chamber (412) is provided through the fixed cylinder (311). Multiple aeration holes (413) are provided through the side of the connecting chamber (412) facing the outside of the fixed cylinder (311). A one-way valve (414) is provided on the side of the connecting chamber (412) facing the inside of the fixed cylinder (311). The number of connecting chambers (412) is set to multiple, and the multiple connecting chambers (412) are distributed around the center of the fixed cylinder (311).

8. A multifunctional culture box for Haematococcus pluvialis according to claim 7, characterized in that, The exhaust structure (42) includes a stop block (421) and an exhaust pipe (422). The side wall of the stop block (421) is fixedly connected to the inner wall of the annular groove (14). The stop block (421) is located at the top of the annular groove (14). The stop block (421) is arc-shaped. The exhaust pipe (422) is provided through the receiving cylinder (16) at its end. A partition plate (423) is fixedly connected to the middle of the exhaust pipe (422). A push rod (424) is provided through the middle of the partition plate (423). A plurality of exhaust holes (425) are also provided through the middle of the partition plate (423). The push rod (424) is slidably connected to the partition plate (423). A limit member (426) is fixedly connected to the top of the push rod (424). A sealing member (427) is fixedly connected to the bottom of the push rod (424). A return spring (428) is sleeved on the outer periphery of the push rod (424). The top of the return spring (428) abuts against the limit member (426). The bottom of the return spring (428) abuts against the partition plate (423). A guide wheel (429) is rotatably provided on the top of the limit member (426). The guide wheel (429) matches the push block (421).

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