Microalgae culture device for ecological restoration

Abstract

The utility model relates to a microalgae culture device for ecological restoration, which comprises a culture tank, an annular first cover plate mounted at the top of the culture tank through a flange, an annular second cover plate detachably mounted on the inner wall of the first cover plate, a third cover plate detachably mounted on the inner wall of the second cover plate, and a liquid distribution plate inserted into the upper part of the inner wall of the culture tank, a liquid inlet in the liquid distribution plate penetrates out of the side wall of the culture tank, a microalgae inlet located below the liquid distribution plate is formed in the side wall of the culture tank, a temperature equalizing cover is arranged on the inner wall of one side of the culture tank, a heating resistance wire is arranged in the temperature equalizing cover, air inlet pipes are arranged on the two sides of the top of the second cover plate in an up-down sealing and sliding mode, and the bottoms of the air inlet pipes are connected with aeration coil pipes; a lifting mechanism for driving the air inlet pipe to lift is arranged on the outer side of the culture tank, and illuminating lamps are vertically and hermetically arranged on two sides of the top of the third cover plate in a sliding manner. The illumination lamp and the aeration coil pipe are convenient to disassemble, assemble and clean, the height of the aeration pipe is adjustable, and the microalgae culture effect is good.

Description

Technical Field

[0001] This utility model relates to the field of microalgae technology, and in particular to a microalgae cultivation device for ecological restoration. Background Technology

[0002] Active cell microalgae culture refers to the process of culturing and propagating microalgae cells under suitable environmental conditions to obtain large quantities of microalgae biomass. Microalgae are a class of tiny, single-celled or multicellular algae with high biodiversity. They can produce large amounts of organic matter and oxygen during photosynthesis. The development of active cell microalgae culture not only provides a new approach to sustainable development and green production, but also offers new possibilities for solving environmental problems and developing high-value-added products.

[0003] Chinese utility model patent CN217077563U discloses a microalgae cultivation device. When cleaning the surface of the light lamp tube, the adjusting support nut on the lifting rod is first screwed to the top. Cleaning solution is then injected into the inner cavity of the cleaning hood through the injection pipe. The handle is then moved up and down to clean the surface of the light lamp tube. During this process, air is blown into the interior through the aeration pipe to agitate the cleaning solution and improve cleaning. After cleaning, the cleaning hood is lowered to the bottom of the light lamp tube to drain the cleaned liquid. Finally, the cleaning hood is reset. The entire cleaning process is relatively complex, and the light lamp tube is inconvenient to remove and replace. Furthermore, the aeration pipe is located at the bottom, and the aeration position is fixed. Nearby microalgae receive more gas, while microalgae further away receive less. This uneven gas supply leads to varying degrees of microalgae cultivation. Microalgae that are constantly near the aeration pipe may experience high fluid shear forces, which could damage cells in some sensitive microalgae species. Summary of the Invention

[0004] This invention aims to address the shortcomings of existing technologies by providing a microalgae cultivation device for ecological restoration.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: A microalgae cultivation device for ecological restoration includes a cultivation tank. A first annular cover plate is installed on the top of the cultivation tank via a flange. A second annular cover plate is detachably installed on the inner wall of the first cover plate. A third cover plate is detachably installed on the inner wall of the second cover plate. The first, second, and third cover plates seal the top of the cultivation tank. A liquid distribution plate is inserted into the upper part of the inner wall of the cultivation tank. The liquid inlet on the liquid distribution plate extends through the side wall of the cultivation tank. A microalgae inlet is located below the liquid distribution plate on the side wall of the cultivation tank. A temperature equalization cover is provided on one side of the inner wall of the cultivation tank. A heating resistance wire is provided inside the temperature equalization cover. An air inlet pipe is slidably and vertically sealed on both sides of the top of the second cover plate. An aeration coil is connected to the bottom of the air inlet pipe. A lifting mechanism for driving the air inlet pipe to rise and fall is provided on the outside of the cultivation tank. A light lamp is slidably and vertically sealed on both sides of the top of the third cover plate. The light lamp is located in the gap of the aeration coil and does not interfere with the vertically sliding aeration coil. The air inlet pipe and the light lamp are located in the gap of the liquid distribution plate. A discharge port is provided at the bottom of the cultivation tank.

[0006] Specifically, a support ring is provided on the upper part of the inner wall of the culture tank, and several insertion rods are provided around the bottom edge of the liquid distribution plate. Several insertion holes corresponding to the insertion rods are provided on the support ring, and the insertion rods pass through the insertion holes.

[0007] Specifically, the second cover plate is bolted to the first cover plate, and the third cover plate is bolted to the second cover plate.

[0008] In particular, the culture vessel has a sampling port at the bottom.

[0009] Specifically, the lifting mechanism includes a support plate and an electric actuator. The support plate is fixed to the lower part of both sides of the culture tank, and the electric actuator is installed on the support plate. The top of the electric actuator is rotatably connected to a lifting plate. The lifting plate is provided with a through hole corresponding to the air inlet pipe. The air inlet pipe passes through the through hole, and the outer side of the air inlet pipe is provided with threads close to the lifting plate. A pair of nuts are threaded onto the air inlet pipe, and the air inlet pipe is fixed to the lifting plate by the pair of nuts.

[0010] Specifically, the top of the lamp is equipped with a limiting plate, and a fixing bolt is threaded onto the limiting plate. The limiting plate is fixed to the third cover plate by the fixing bolt, and a handle is provided on the top of the limiting plate.

[0011] The beneficial effects of this utility model are:

[0012] This utility model, by setting a third cover plate, a limiting plate, a handle, and a fixing bolt, allows for easy cleaning of the lamp by simply loosening the fixing bolt, holding the handle, pulling out the lamp, and wiping it clean. The lamp is easy to clean and replace.

[0013] By incorporating a second cover plate, air inlet pipe, aeration coil, and lifting mechanism, the height of the aeration coil is adjustable, allowing for more precise control of gas distribution in the culture medium. Depending on the different microalgae species and growth stages, varying gas requirements and adjusting the aeration coil height appropriately helps improve gas transfer efficiency, promoting microalgae growth and metabolism; it also avoids long-term shearing forces on nearby microalgae, preventing physical damage to microalgae cells; furthermore, the aeration coil is easy to disassemble and replace. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] In the diagram: 1-Cultivation tank; 2-First cover plate; 3-Second cover plate; 4-Third cover plate; 5-Distribution plate; 6-Support ring; 7-Insertion rod; 8-Microalgae inlet; 9-Temperature equalization hood; 10-Air inlet pipe; 11-Aeration coil; 12-Illuminator; 13-Support plate; 14-Electric actuator; 15-Lifting plate; 16-Limiting plate; 17-Handle; 18-Fixing bolt;

[0016] The following will describe in detail the embodiments of this utility model with reference to the accompanying drawings. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0018] like Figure 1 As shown, a microalgae cultivation device for ecological restoration includes a cultivation tank 1. A first annular cover plate 2 is installed on the top of the cultivation tank 1 via a flange. A second annular cover plate 3 is detachably installed on the inner wall of the first cover plate 2. A third cover plate 4 is detachably installed on the inner wall of the second cover plate 3. The second cover plate 3 is fixed to the first cover plate 2 by bolts, and the third cover plate 4 is fixed to the second cover plate 3 by bolts. The first cover plate 2, the second cover plate 3, and the third cover plate 4 seal the top of the cultivation tank 1. A liquid distribution plate 5 is inserted into the upper part of the inner wall of the cultivation tank 1. A support ring 6 is provided on the upper part of the inner wall of the cultivation tank 1. Several insertion rods 7 are provided around the bottom edge of the liquid distribution plate 5. Several insertion holes corresponding to the insertion rods 7 are provided on the support ring 6. The insertion rods 7 pass through the insertion holes. The liquid inlet on the liquid distribution plate 5 extends out of the side wall of the cultivation tank 1. A microalgae inlet 8 is provided on the side wall of the cultivation tank 1 below the liquid distribution plate 5. A sampling port is provided at the bottom of the cultivation tank 1. A discharge port is provided at the bottom of the cultivation tank 1. A temperature equalization cover 9 is provided on one side of the inner wall of the cultivation tank 1. A heating resistance wire is provided inside the temperature equalization cover 9.

[0019] The second cover plate 3 has air inlet pipes 10 that are slidably sealed on both sides of the top. The bottom of the air inlet pipes 10 is connected to an aeration coil 11. The outside of the culture tank 1 is provided with a lifting mechanism that drives the air inlet pipes 10 to rise and fall. The lifting mechanism includes a support plate 13 and an electric push rod 14. The support plate 13 is fixed to the lower part of both sides of the culture tank 1. The electric push rod 14 is installed on the support plate 13. The top of the push rod of the electric push rod 13 is rotatably connected to a lifting plate 15. The lifting plate 15 has a through hole corresponding to the air inlet pipes 10. The air inlet pipes 10 pass through the through holes, and the outer side of the air inlet pipes 10 is threaded close to the lifting plate 15. A pair of nuts are threadedly connected to the air inlet pipes 10. The air inlet pipes 10 are fixed to the lifting plate 15 by a pair of nuts.

[0020] The height of the aeration coil 11 is adjustable, allowing for more precise control of gas distribution in the culture medium. Different microalgae species and growth stages have varying gas requirements; adjusting the height appropriately helps improve gas transfer efficiency, promoting microalgae growth and metabolism. It also avoids long-term shearing forces on nearby microalgae, preventing physical damage to algal cells. Furthermore, it enhances mixing: suitable height adjustment improves bubble distribution in the culture medium, enhancing water circulation and mixing, helping to maintain the uniformity of nutrients and carbon dioxide in the culture medium, and preventing uneven growth caused by excessively high or low local concentrations.

[0021] The top two sides of the third cover plate 4 are equipped with sliding lights 12. The air inlet pipe 10 and the light 12 are located in the gap of the liquid distribution plate 5. The light 12 is located in the gap of the aeration coil 11 and does not interfere with the sliding aeration coil 11. The top of the light 12 is equipped with a limiting plate 16. The limiting plate 16 is threaded with a fixing bolt 18. The limiting plate 16 is fixed to the third cover plate 4 by the fixing bolt 18. The top of the limiting plate 16 is equipped with a handle 17.

[0022] In operation, the culture medium enters the culture tank 1 through the inlet on the distribution plate 5 and disperses into the culture tank 1. Microalgae enter the culture tank 1 through the microalgae inlet 8. The heating resistance wire and the temperature equalization cover 9 control the temperature inside the culture tank 1. The air inlet pipe 10 fills the aeration coil 11 with air, which then fills the culture tank 1. During this process, the aeration coil 11 can be raised and lowered by the electric push rod 14 to adjust its height. The light lamp 12 provides illumination. Samples are taken and tested through the sampling port. After cultivation is completed, the light is discharged through the outlet. To clean the light lamp, loosen the fixing bolt 18, hold the handle 17 and pull out the light lamp 12 for wiping, cleaning, or replacement. Alternatively, the lifting plate 15 can be separated from the air inlet pipe 10, the second cover plate 3 can be removed, and then the aeration coil 11 and the distribution plate 5 can be taken out for replacement or cleaning.

[0023] The light lamp 12 and aeration coil 11 of this utility model are easy to disassemble and clean. The height of the aeration coil is adjustable by 11 degrees, resulting in good microalgae cultivation effect.

[0024] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made using the inventive concept and technical solution of the present invention, or direct application to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A microalgae cultivation device for ecological restoration, comprising a cultivation tank (1), characterized in that, The annular first cover plate (2) is installed on the top of the culture tank (1) through a flange, the annular second cover plate (3) is detachably installed on the inner wall of the first cover plate (2), and the third cover plate (4) is detachably installed on the inner wall of the second cover plate (3); the first cover plate (2), the second cover plate (3) and the third cover plate (4) seal the top of the culture tank (1); the liquid distribution plate (5) is inserted into the upper portion of the inner wall of the culture tank (1); the liquid inlet on the liquid distribution plate (5) penetrates through the side wall of the culture tank (1); the microalgae inlet (8) is arranged on the side wall of the culture tank (1) below the liquid distribution plate (5); the uniform temperature cover (9) is arranged on the inner wall of one side of the culture tank (1); the heating resistance wire is arranged in the uniform temperature cover (9); the gas inlet pipe (10) is sealingly and slidably arranged on the top of the two sides of the second cover plate (3) in a vertical mode; the aeration coil (11) is connected to the bottom of the gas inlet pipe (10); the lifting mechanism is arranged outside the culture tank (1) and used for driving the gas inlet pipe (10) to lift; the light lamp (12) is sealingly and slidably arranged on the top of the two sides of the third cover plate (4) in a vertical mode; the light lamp (12) is located in the gap of the aeration coil (11) and does not interfere with the aeration coil (11) which slides vertically; the gas inlet pipe (10) and the light lamp (12) are located in the gap of the liquid distribution plate (5); and the discharge port is arranged at the bottom of the culture tank (1).

2. The microalgae cultivation device for ecological restoration according to claim 1, characterized in that, The support ring (6) is arranged on the upper portion of the inner wall of the culture tank (1); the plurality of insertion rods (7) are arranged on the circumferential edge of the bottom of the liquid distribution plate (5); the plurality of insertion holes corresponding to the insertion rods (7) are arranged on the support ring (6); and the insertion rods (7) penetrate through the insertion holes.

3. The microalgae cultivation device for ecological restoration according to claim 1, characterized in that, The second cover plate (3) is fixed on the first cover plate (2) through bolts; and the third cover plate (4) is fixed on the second cover plate (3) through bolts.

4. The microalgae cultivation device for ecological restoration according to claim 1, characterized in that, The sampling port is arranged at the bottom of the culture tank (1).

5. The microalgae cultivation device for ecological restoration according to claim 1, characterized in that, The lifting mechanism comprises the support plate (13) and the electric push rod (14); the support plate (13) is fixedly connected to the lower portions of the two sides of the culture tank (1); the electric push rod (14) is installed on the support plate (13); the push rod of the electric push rod (14) is rotationally connected to the lifting plate (15) at the top of the push rod; the lifting plate (15) is provided with the through hole corresponding to the gas inlet pipe (10); the gas inlet pipe (10) penetrates through the through hole; the portion of the gas inlet pipe (10) close to the lifting plate (15) is provided with a thread; the pair of nuts are threadedly connected to the gas inlet pipe (10); and the gas inlet pipe (10) is fixed on the lifting plate (15) through the pair of nuts.

6. The microalgae cultivation device for ecological restoration according to claim 1, characterized in that, The limiting plate (16) is arranged at the top of the light lamp (12); the fixing bolt (18) is threadedly connected to the limiting plate (16); the limiting plate (16) is fixed on the third cover plate (4) through the fixing bolt (18); and the handle (17) is arranged at the top of the limiting plate (16).

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