Microalgae species culture bottle

Abstract

The utility model discloses a microalgae species culture bottle, and relates to the technical field of algae species culture. The bottle comprises a bottle body and two dustproof assemblies, the upper end of the bottle body is in threaded fit with a bottle cap, a ball barrel is embedded in the side portion of the bottle body, and connecting pieces are arranged on the side portion of the ball barrel and the side portion of the bottle body. The dustproof assembly comprises a protection box, the end, away from the bottle body, of the connecting piece is clamped in the protection box, the lower portion of the protection box is in sliding fit with a clamping piece corresponding to the connecting piece, the upper portion of the clamping piece is clamped to the upper portion of the connecting piece, a first movable plate is placed on the upper side of the clamping piece, a fixing column is arranged on the upper side of the first movable plate, and a first spring is placed on the upper side of the first movable plate. The L-shaped groove channel is matched with the limiting block, so that the probability that the second movable plate is directly pushed out of the first groove opening by the push-out piece due to misoperation is reduced, and meanwhile, the L-shaped rotating plate is rotated to drive the second movable plate to move downwards so as to relieve safe locking.

Description

A microalgae culture flask Technical Field

[0001] This utility model belongs to the field of algae culture, specifically, it relates to a microalgae culture bottle. Background Technology

[0002] Microalgae culture flasks are containers specifically designed for laboratory or small-scale microalgae cultivation. Their core function is to provide a suitable growth environment to maintain the activity, purity, and efficient proliferation of microalgae strains.

[0003] Chinese Patent No. CN214032459U discloses a microalgae culture bottle, comprising: a bottle body, a bottle cap connected to the upper end of the bottle body by a thread, an adjustment component embedded on the left side surface of the bottle body, a conduit connected to the left side of the adjustment component and the left side of the bottle body, a dust cap fitted on the end of each of the two conduits away from the bottle body, a sliding groove opened inside each of the two dust caps, and an irregularly shaped clip slidably embedded inside each of the two sliding grooves.

[0004] The microalgae culture flask disclosed in the application has an irreversible aging deformation when the spring is compressed for a long time. This makes it difficult for the irregularly shaped clip to return to the target position, making it difficult for the dust cap to be stably fixed on the tube. As a result, the spring needs to be replaced regularly. However, since the two ends of the spring are fixedly connected to the upper surface of the irregularly shaped clip and the inside of the sliding groove, it is not easy to disassemble and replace the spring. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a microalgae culture flask that solves the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0007] A microalgae culture flask includes: a flask body and two dustproof components. The flask body is located between the two dustproof components. A cap is threaded onto the upper end of the flask body. A ball tube is embedded in the side of the flask body. One end of the ball tube is movably fitted inside the flask body. Connectors are provided on the side of the ball tube and the side of the flask body. The flask body is located between the two connectors. The ball tube and the connectors are both connected to the inner cavity of the flask body.

[0008] The dustproof assembly includes a protective box. The end of the connector furthest from the bottle body is snapped into the protective box. A corresponding snap-fit ​​element slides onto the lower part of the protective box. The upper part of the snap-fit ​​element snaps onto the upper part of the connector. A first movable plate is placed on the upper side of the snap-fit ​​element. A fixing post and a first spring are located on the upper side of the first movable plate, with the first spring sleeved around the periphery of the fixing post. First slots are provided on opposite outer sides of the upper parts of both protective boxes. A second movable plate is placed on the upper side of each slot, with the first movable plate located within the slot. A push-out element is provided on the upper part of the protective box. Both the first and second movable plates are located on one side of the push-out element, which is positioned above the snap-fit ​​element. A sleeve is provided on the lower side of the second movable plate, with the first spring located on the lower end face of the sleeve. The lower end of the cylinder is located around the fixed column. An L-shaped rotating plate is rotatably fitted on one side of the protective box. One end of the L-shaped rotating plate extends into the first slot. A movable groove is provided on one side of the inner wall of the L-shaped rotating plate. An extension rod is provided on one side of the second movable plate, and L-shaped channels are provided on both sides. The extension rod is located in the movable groove. The length of the movable groove is greater than the diameter of the extension rod. The extension rod is located between the two L-shaped channels. The L-shaped channel extends through the side of the second movable plate near the extension rod. Limiting blocks are installed on both sides of the first slot. The limiting blocks are located in the corresponding L-shaped channels. The L-shaped channel includes a limiting groove and a strip groove on one side of the second movable plate. The strip groove is located above the limiting groove and extends through the side of the second movable plate near the extension rod. The limiting block is located in the corresponding limiting groove.

[0009] Optionally, a lifting rod is installed on the upper surface of the inner wall of the bottle cap, and a light is installed at the lower end of the lifting rod. Both the lifting rod and the light are located inside the bottle body.

[0010] Optionally, an anti-slip seat is attached to the lower end of the bottle body. The upper end of the anti-slip seat is provided with multiple hemispherical rubber protrusions, and the lower end of the bottle body is provided with multiple hemispherical grooves. The hemispherical rubber protrusions are attached to the corresponding hemispherical grooves.

[0011] Optionally, the connector includes a conduit installed on the side of the bulb or the side of the bottle, a square block installed on the periphery of one end of the conduit, a first slot on the upper side of the square block, and the upper part of the connector snaps into the first slot.

[0012] Optionally, the latching component includes a U-shaped frame, with an ejector located above the U-shaped frame. The upper and lower sides of the inner wall of the U-shaped frame are provided with latching blocks. The upper latching block engages in a first latching slot. The lower inner sides of the two protective boxes are each provided with a second slot. A square block is located within the second slot. The lower side of the protective box is provided with a second latching slot and a first rectangular slot. The upper part of the lower latching block is located within the second latching slot. The first rectangular slot communicates with the second slot. The middle part of the U-shaped frame is located within the second slot. The lower part of the U-shaped frame passes through the first rectangular slot. A receiving slot is provided below the first slot. A second rectangular slot and a through slot corresponding to the first latching slot are provided below the receiving slot. Both the second rectangular slot and the through slot communicate with the second slot. The upper part of the U-shaped frame passes through the through slot and is placed within the receiving slot. The lower part of the upper latching block passes through the second rectangular slot and is placed within the first latching slot.

[0013] Optionally, the ejector includes a sliding plate that slides within the first slot. The sliding plate is located above the U-shaped frame and between two limiting blocks. A sliding post is mounted on one side of the sliding plate, and the sliding plate is located between the sliding post and the second movable plate. A through hole is provided on one side of the upper part of the protective box, and the through hole is connected to the first slot. The sliding post passes through the through hole. A pressing plate is provided on one end face of the sliding post, and a second spring is sleeved on its periphery. The sliding post is located between the pressing plate and the sliding plate, and the second spring is located between the pressing plate and the protective box.

[0014] Optionally, a stud is provided on the end face of the slide column away from the slide plate, and a screw hole is provided on the end face of the pressing plate adjacent to the slide column. The screw hole is adapted to the stud, and the pressing plate is threaded onto the stud through the screw hole.

[0015] Optionally, the protective box has a vertical groove on one side and two support blocks installed thereon. The vertical groove is located between the two support blocks and is connected to the first slot. A support rod is provided between the two support blocks. An L-shaped rotating plate is rotatably fitted around the support rod. The vertical groove passes through the middle of the L-shaped rotating plate.

[0016] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the following advantages at the same time:

[0017] By using the L-shaped channel and the limiting block, the probability of the second movable plate being pushed directly out of the first slot due to misoperation of the ejector is reduced. At the same time, the safety lock is released by rotating the L-shaped rotating plate to drive the second movable plate to move down. By pushing the first and second movable plates out of the first slot, the sleeve and the fixed column can be separated quickly, and the replacement rate of the first spring can be improved.

[0018] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0019] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:

[0020] Figure 1 is a schematic diagram of the three-dimensional structure of the bottle;

[0021] Figure 2 is a schematic diagram of the cross-sectional structure of the bottle;

[0022] Figure 3 is a schematic diagram of the cross-sectional structure of the dustproof component;

[0023] Figure 4 is a schematic diagram of the three-dimensional structure of the second movable plate.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] Bottle body 1, locking block 2, bottle cap 3, lifting rod 4, lighting lamp 5, hemispherical rubber protrusion 6, anti-slip seat 7, ball cylinder 8, conduit 9, square block 10, U-shaped frame 11, protective box 12, pressing plate 13, sliding column 14, sliding plate 15, first movable plate 16, fixed column 17, sleeve 18, second movable plate 19, L-shaped rotating rod 20, limiting block 21, first spring 22, support block 23.

[0026] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Microalgae, as an important biological resource, have broad application prospects in food, medicine, energy, and environmental protection. Their efficient photosynthetic capacity and rapid proliferation characteristics make microalgae cultivation a crucial link in scientific research and industrial production. In laboratory or small-scale cultivation settings, microalgae culture flasks, as basic equipment, must meet multiple requirements for maintaining algal viability and purity, and optimizing the growth environment. In existing technologies, the design and function of microalgae culture flasks mainly revolve around core issues such as light supply, gas exchange, contamination prevention, and ease of operation, with devices featuring different structural characteristics adapting to diverse cultivation needs.

[0030] Microalgae culture flasks can be broadly categorized into open and closed types based on their application. Open culture flasks are primarily used for initial propagation or cultivation of algal strains with high tolerance. They have a simple structure, typically a wide-mouthed bottle or shallow dish design, allowing for direct contact with ambient air and natural light. However, these devices are susceptible to contamination by external microorganisms and have lower precision in temperature and humidity control, making them suitable for environments with less stringent cleanliness requirements. Closed culture flasks, on the other hand, reduce external interference through a sealed structure and are commonly used in laboratories for long-term preservation of high-purity algal strains or for precise experimental research. These devices are usually equipped with a controllable light source, gas exchange channels, and sampling ports, enabling more stable adjustment of environmental parameters.

[0031] In terms of material selection, transparent or translucent glass and polymer materials are the main components of microalgae culture flasks. Glass is widely used in laboratories due to its high light transmittance, chemical stability, and high-temperature sterilization resistance. Polymer materials such as polycarbonate (PC) or polymethyl methacrylate (PMMA) are gradually becoming the preferred choice for industrial production due to their light weight, high impact resistance, and lower cost. Some high-end culture flasks also have an anti-adhesion coating on the inner wall to reduce excessive adhesion of microalgae cells to the flask wall and prevent biofilm formation from affecting light transmittance.

[0032] Light supply is one of the core elements in the design of microalgae culture flasks. Natural light-dependent culture flasks are typically designed as flat or cylindrical to increase the light-receiving area, but this is limited by weather conditions and the diurnal cycle. To improve controllability, many closed culture flasks integrate artificial light sources, such as LED light strips surrounding the flask or top-embedded lighting modules. LED light sources have become the mainstream choice due to their adjustable wavelength, low heat generation, and low energy consumption. Some devices also optimize the uniformity of light distribution through reflective layers or light-guiding structures to avoid uneven algal growth caused by excessively high local light intensity or shadowed areas.

[0033] The design of the gas exchange system directly affects the photosynthetic efficiency and metabolic waste removal of microalgae. Traditional culture flasks achieve gas exchange by covering the flask opening with a permeable membrane or using a one-way valve, but such passive designs are prone to insufficient carbon dioxide supply or oxygen accumulation. Improved devices employ active aeration, such as installing microporous aerators at the bottom of the flask and injecting a mixed gas (such as air and carbon dioxide) through an external air pump, while simultaneously creating a circulating airflow through the top exhaust port. These systems are typically equipped with gas flow meters and filters, which can precisely control the gas ratio and intercept external contaminants.

[0034] Contamination prevention measures are particularly important in pure culture of microalgae. Interfaces of culture flasks, such as sampling ports and vents, often use removable sealing caps or silicone stoppers, which are locally sterilized during operation by flame sterilization with an alcohol lamp or ultraviolet irradiation. Some devices incorporate multi-layered filter membranes in the ventilation channels, with progressively decreasing pore sizes to intercept particles and microorganisms of varying sizes. Furthermore, integrated bottle and interface designs reduce the number of assembled parts, lowering the risk of contamination from gaps in connections. For devices used for long-term cultivation, built-in slow-release antibacterial agents or periodic UV sterilization further enhance the system's biosafety.

[0035] Ease of operation is reflected in the modular design and easy maintenance of the culture bottles. Quick-release caps and interface components facilitate cleaning and sterilization. Some bottles feature a segmented structure connected by threads or snaps, allowing for easy disassembly and placement in an autoclave. The optimized design of the sampling port allows for the extraction of small amounts of culture medium without opening the main cap, reducing the possibility of contamination during operation. Furthermore, the graduated markings and transparent observation window on the bottle facilitate real-time monitoring of changes in culture medium volume and algal density.

[0036] In terms of environmental parameter monitoring, the high-end culture flasks integrate sensor modules that can monitor key parameters such as culture medium temperature, pH, dissolved oxygen, and light intensity in real time, and transmit the data to terminal devices via an external display or wirelessly. This intelligent design significantly reduces the workload of manual monitoring and is particularly suitable for experimental scenarios requiring long-term continuous cultivation. The temperature control system achieves precise regulation through an external water bath circulation device or a built-in electrothermal film, ensuring that microalgae grow within their optimal temperature range.

[0037] While existing technologies have met the basic requirements for microalgae cultivation to some extent, several common problems remain. For example, balancing light uniformity and gas exchange efficiency is difficult; over-reliance on external equipment increases system complexity; frequent sampling and manipulation still pose a risk of contamination; and long-term use of detachable components can lead to a decline in sealing performance. Furthermore, traditional spring-loaded or threaded dustproof structures are prone to aging and failure after prolonged use, making maintenance and replacement cumbersome and potentially affecting the stability of the cultivation system. These issues have prompted researchers to continuously explore optimized structural designs and material applications to improve the reliability and operational efficiency of microalgae culture flasks.

[0038] Please refer to Figures 1-4. In this embodiment, a microalgae culture bottle is provided, including: a bottle body 1 and two dustproof components. The bottle body 1 is located between the two dustproof components. A bottle cap 3 is threaded onto the upper end of the bottle body 1. A ball tube 8 is embedded in the side of the bottle body 1. One end of the ball tube 8 is movably fitted inside the bottle body 1. Connectors are provided on the side of the ball tube 8 and the side of the bottle body 1. The bottle body 1 is located between the two connectors. The ball tube 8 and the connectors are both connected to the inner cavity of the bottle body 1.

[0039] The dustproof assembly includes a protective box 12. The end of the connector away from the bottle body 1 is snapped into the protective box 12. A corresponding snap-fit ​​component is slidably fitted onto the lower part of the protective box 12. The upper part of the snap-fit ​​component is snapped onto the upper part of the connector. A first movable plate 16 is placed on the upper side of the snap-fit ​​component. A fixing post 17 is provided on the upper side of the first movable plate 16, and a first spring 22 is placed thereon. The first spring 22 is sleeved around the periphery of the fixing post 17. First slots are provided on the opposite outer sides of the upper parts of both protective boxes 12. A second movable plate 19 is placed on the upper side of the first slot. The first movable plate 16 is located within the first slot. A push-out component is provided on the upper part of the protective box 12. Both the first movable plate 16 and the second movable plate 19 are located on one side of the push-out component, which is located above the snap-fit ​​component. A sleeve 18 is provided on the lower side of the second movable plate 19, and the first spring 22 is located on the sleeve 18. The lower end of the sleeve 18 is located around the fixed post 17. An L-shaped rotating plate 20 is rotatably fitted on one side of the protective box 12. One end of the L-shaped rotating plate 20 extends into the first slot. A movable groove is provided on one side of the inner wall of the L-shaped rotating plate 20. An extension rod is provided on one side of the second movable plate 19, and L-shaped channels are provided on both sides. The extension rod is located in the movable groove. The length of the movable groove is greater than the diameter of the extension rod. The extension rod is located between the two L-shaped channels. The L-shaped channel extends through the side of the second movable plate 19 near the extension rod. Limiting blocks 21 are installed on both sides of the first slot. The limiting blocks 21 are located in the corresponding L-shaped channels. The L-shaped channel includes a limiting groove and a strip groove on one side of the second movable plate 19. The strip groove is located on the upper side of the limiting groove. The strip groove extends through the side of the second movable plate 19 near the extension rod. The limiting block 21 is located in the corresponding limiting groove.

[0040] One application of this embodiment is as follows: When the first spring 22 needs to be replaced, first grasp the exposed L-shaped rotating plate 20 and pull it upwards and rotate it. This forces the extension rod to slide the second movable plate 19 downwards using the groove wall. At this time, the limiting block 21 is placed in the strip groove. Then, press the ejector, so that the first movable plate 16 and the second movable plate 19 are pushed out of the first slot simultaneously. The second movable plate 19 disengages from the limiting block 21 using the strip groove, and the sleeve 18 disengages from the fixing post 17. Thus, the aged or damaged first spring 22 can be removed. Similarly, referring to the above operation, after replacing the first spring 22, align the fixing post 17 with the inserted sleeve 18, and then push the first movable plate 16 and the second movable plate 19 back into the first slot for re-limiting and fixing. It should be noted that all electrical devices involved in this application can be powered by a battery or an external power source.

[0041] By using the L-shaped channel and the limiting block 21 in combination, the probability of the second movable plate 19 being directly pushed out of the first slot due to misoperation of the ejector is reduced. At the same time, the safety lock is released by rotating the L-shaped rotating plate 20 to drive the second movable plate 19 to move down. By pushing the first movable plate 16 and the second movable plate 19 out of the first slot, the sleeve 18 and the fixed column 17 are quickly separated, and the replacement rate of the first spring 22 is improved.

[0042] As shown in Figure 2, a lifting rod 4 is installed on the upper end of the inner wall of the bottle cap 3 in this embodiment, and a lighting lamp 5 is installed at the lower end of the lifting rod 4. Both the lifting rod 4 and the lighting lamp 5 are located inside the bottle body 1. By cooperating with the lifting rod 4 and the lighting lamp 5, uniform light can be provided inside the bottle body 1, ensuring the photosynthesis of microalgae inside the bottle body 1 and improving the efficiency of microalgae culture.

[0043] As shown in Figure 2, in this embodiment, the lower end face of the bottle body 1 is fitted with an anti-slip seat 7. The upper end face of the anti-slip seat 7 is provided with multiple hemispherical rubber protrusions 6, and the lower end face of the bottle body 1 is provided with multiple hemispherical grooves. The hemispherical rubber protrusions 6 are fitted into the corresponding hemispherical grooves. The anti-slip seat 7 facilitates the increase of friction between the bottle body 1 and the table. The hemispherical rubber protrusions 6 and the hemispherical grooves cooperate to facilitate the positioning of the bottle body 1 on the anti-slip seat 7.

[0044] As shown in Figure 3, the connector in this embodiment includes a conduit 9 installed on the side of the ball tube 8 or the side of the bottle body 1. A square block 10 is installed on the periphery of one end of the conduit 9. A first slot is provided on the upper side of the square block 10. The upper part of the snap-fit ​​is snapped into the first slot. The square block 10 facilitates the positioning and installation of the protective box 12 on the conduit 9.

[0045] As shown in Figure 3, the snap-fit ​​component in this embodiment includes a U-shaped frame 11, with a push-out component located above the U-shaped frame 11. The upper and lower sides of the inner wall of the U-shaped frame 11 are provided with snap-fit ​​blocks 2. The upper snap-fit ​​block 2 snaps into a first snap-fit ​​groove. The lower inner sides of the two protective boxes 12 are each provided with a second slot. A square block 10 is located within the second slot. The lower side of the protective box 12 is provided with a second snap-fit ​​groove and a first rectangular slot. The upper part of the lower snap-fit ​​block 2 is located within the second snap-fit ​​groove. The first rectangular slot communicates with the second slot. The middle part of the U-shaped frame 11 is located within the second slot. The lower part of the U-shaped frame 11 passes through the first rectangular slot. The U-shaped frame 11 has a receiving groove on the lower side of the first groove opening, a second rectangular groove and a through groove corresponding to the first slot on the lower side of the receiving groove, and the second rectangular groove and the through groove are connected to the second groove opening. The upper part of the U-shaped frame 11 passes through the through groove and is placed in the receiving groove. The lower part of the upper locking block 2 passes through the second rectangular groove and is placed in the first slot. The upper locking block 2, the second rectangular groove and the first slot cooperate to facilitate the fixed connection of the protective box 12 to the square block 10. The lower locking block 2 and the second slot cooperate to improve the stability of the lower part of the U-shaped frame 11 when it is squeezed and moved upward.

[0046] As shown in Figure 3, the ejector in this embodiment includes a sliding plate 15 that slides within the first slot. The sliding plate 15 is located above the U-shaped frame 11 and between two limiting blocks 21. A sliding post 14 is mounted on one side of the sliding plate 15, and the sliding plate 15 is located between the sliding post 14 and the second movable plate 19. A through hole is provided on one side of the upper part of the protective box 12, and the through hole is connected to the first slot. The sliding post 14 passes through the through hole. A pressing plate 13 is provided on one end face of the sliding post 14, and a second spring is sleeved on its periphery. The sliding post 14 is located between the pressing plate 13 and the sliding plate 15, and the second spring is located between the pressing plate 13 and the protective box 12. By pressing the pressing plate 13, the sliding plate 15 pushes the first movable plate 16 and the second movable plate 19 away from the first slot, improving the convenience of disassembling and replacing the first spring 22. When the pressing plate 13 releases the pressure on the second spring, the sliding plate 15 can be quickly reset by the second spring.

[0047] As shown in Figure 3, in this embodiment, the end face of the sliding column 14 away from the sliding plate 15 is provided with a stud, and the end face of the pressing plate 13 adjacent to the sliding column 14 is provided with a screw hole. The screw hole is adapted to the stud, and the pressing plate 13 is threadedly fitted onto the stud through the screw hole. The screw hole and the stud are fitted together, which facilitates the connection, fixation or disassembly of the sliding column 14 and the pressing plate 13, so that the old second spring can be removed and replaced.

[0048] As shown in Figures 1 and 4, the protective box 12 of this embodiment has a vertical groove on one side and is equipped with two support blocks 23. The vertical groove is located between the two support blocks 23 and is connected to the first slot. A support rod is provided between the two support blocks 23. The L-shaped rotating plate 20 is rotatably fitted around the support rod. The vertical groove runs through the middle of the L-shaped rotating plate 20. The stability of the rotation of the L-shaped rotating plate 20 is improved by the cooperation of the support blocks 23 and the support rod. The vertical groove reduces the probability that the protective box 12 will obstruct the movement of the L-shaped rotating plate 20.

[0049] This utility model is not limited to the above-described embodiments. Anyone should know that structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model. Technical aspects, shapes, and structures not described in detail in this utility model are all publicly known technologies.

Claims

1. A microalgae culture flask, characterized in that, include: The bottle body (1) and two dustproof components are provided. The upper end of the bottle body (1) is threaded with a bottle cap (3). A ball cylinder (8) is embedded in the side of the bottle body (1). Both the side of the ball cylinder (8) and the side of the bottle body (1) are provided with connectors. The dustproof components include a protective box (12). The end of the connector away from the bottle body (1) is snapped into the protective box (12). The lower part of the protective box (12) is slidably fitted with a snap-fit ​​corresponding to the connector. The upper part of the snap-fit ​​is snapped into the upper part of the connector. A first movable plate (16) is placed on the upper side of the snap-fit. A fixing post (17) is provided on the upper side of the first movable plate (16), and a first spring (22) is placed thereon. The first spring (22) is sleeved on the fixing post (17). 7) On the periphery, the upper outer sides of the two protective boxes (12) are provided with a first slot, and a second movable plate (19) is placed on the upper side of the first slot. The upper part of the protective box (12) is pushed out, and a sleeve (18) is provided on the lower side of the second movable plate (19). The lower end of the sleeve (18) is located on the periphery of the fixed column (17). An L-shaped rotating plate (20) is rotatably fitted on one side of the protective box (12). A movable groove is provided on one side of the inner wall of the L-shaped rotating plate (20). An extension rod is provided on one side of the second movable plate (19), and L-shaped channels are provided on both sides. The extension rod is located in the movable groove. Limiting blocks (21) are installed on both sides of the first slot. The limiting blocks (21) are located in the corresponding L-shaped channels.

2. The microalgae culture flask according to claim 1, characterized in that, A lifting rod (4) is installed on the upper end of the inner wall of the bottle cap (3), and a lighting lamp (5) is installed at the lower end of the lifting rod (4).

3. The microalgae culture flask according to claim 1, characterized in that, The lower end of the bottle body (1) is fitted with an anti-slip seat (7). The upper end of the anti-slip seat (7) is provided with multiple hemispherical rubber protrusions (6). The lower end of the bottle body (1) is provided with multiple hemispherical grooves. The hemispherical rubber protrusions (6) are fitted into the corresponding hemispherical grooves.

4. The microalgae culture flask according to claim 1, characterized in that, The connector includes a conduit (9) installed on the side of the ball tube (8) or the side of the bottle body (1). A square block (10) is installed on the periphery of one end of the conduit (9). A first slot is provided on the upper side of the square block (10). The upper part of the connector is engaged in the first slot.

5. A microalgae culture flask according to claim 4, characterized in that, The snap-fit ​​component includes a U-shaped frame (11), with snap-fit ​​blocks (2) on both the upper and lower sides of the inner wall of the U-shaped frame (11), and the snap-fit ​​block (2) located on the upper side snaps into the first snap-fit ​​slot.

6. The microalgae culture flask according to claim 1, characterized in that, The ejector includes a sliding plate (15) that slides into the first slot. A sliding column (14) is installed on one side of the sliding plate (15). A pressing plate (13) is provided on one end face of the sliding column (14), and a second spring is sleeved on the periphery. The second spring is located between the pressing plate (13) and the protective box (12).

7. A microalgae culture flask according to claim 6, characterized in that, The end face of the slide column (14) away from the slide plate (15) is provided with a stud, and the end face of the pressing plate (13) adjacent to the slide column (14) is provided with a screw hole, which is compatible with the stud.

8. The microalgae culture flask according to claim 1, characterized in that, The protective box (12) has a vertical groove on one side and two support blocks (23) are installed. A support rod is provided between the two support blocks (23). The L-shaped rotating plate (20) rotates and fits around the support rod. The vertical groove runs through the middle of the L-shaped rotating plate (20).

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