Aeration device for algae cultivation

Abstract

The utility model discloses an aeration device for algae culture relates to aeration equipment field, including the horizontal setting of gas supply pipe, and the outer circumferential surface intercommunication of gas supply pipe installs a plurality of aeration disc, and one end intercommunication of gas supply pipe installs the connecting pipe, and the other end intercommunication of connecting pipe installs the external gas supply pipe, and the other end of external gas supply pipe is connected with the input end of external gas supply equipment, and through external gas supply equipment will gas source input to aeration disc, and gas supply pipe along vertical direction sliding assembly, when the liquid surface in algae culture pond drops or rises, and gas supply pipe synchronous downward or upward movement. Through the height adjustable and overturning function of aeration disc, the gas exchange process in water body is optimized, thereby improving the carbon dioxide supply of algae, promoting photosynthesis, can also effectively reduce local peroxide or anoxic problem, reduce the instability of algae growth environment, improve the yield and quality of culture.

Description

Technical Field

[0001] This utility model relates to the field of aeration equipment, specifically to an aeration device for algae cultivation. Background Technology

[0002] Algae cultivation is an important aquaculture method, widely used in food, medicine, bioenergy, and water purification. In algae cultivation, a sufficient supply of dissolved oxygen is crucial for algae growth, and aeration devices are key equipment for achieving gas exchange, increasing dissolved oxygen levels in the water, and promoting algal photosynthesis. Traditional aeration methods mainly rely on fixed aeration discs, which are typically installed at the bottom of the cultivation pond. Air is delivered by a blower, forming bubbles that diffuse upwards, thereby increasing the dissolved oxygen concentration in the water.

[0003] However, the main drawback of existing aeration devices is that the height of the aeration disc is fixed and cannot be adjusted according to changes in water level. When the liquid level rises or falls, the distance between the aeration disc and the liquid surface changes, leading to unstable aeration performance. The specific drawbacks are as follows: Low oxygen utilization rate. When the water level is low, the distance from the aeration disc fixed at the bottom of the pond to the liquid surface is short. Limited oxygen is dissolved within the short rising path of the bubbles, and most of the oxygen escapes into the air before effectively dissolving, resulting in oxygen waste. Uneven bubble diffusion. Water level changes affect the movement trajectory of bubbles in the water. If the aeration disc is fixed in a deep water area, the bubbles rise slowly in deeper environments, potentially leading to localized oxygen enrichment while the upper water layer lacks dissolved oxygen, affecting the uniform growth of algae. Difficulty in meeting the needs of different growth stages. Algae have different dissolved oxygen requirements at different growth stages. Fixed aeration devices cannot adjust the height of the aeration discs according to algae growth, potentially leading to oversupply or undersupply of oxygen, thus affecting the growth rate and cultivation efficiency of algae. Increased energy consumption. When the water level is high, the aeration device fixed at the bottom of the pond requires higher wind pressure to transport air to deeper water, increasing the load on the blower and causing additional energy consumption. Based on these considerations, we propose an aeration device for algae cultivation. Utility Model Content

[0004] In order to solve the technical problems existing in the prior art, the present invention provides an aeration device for algae cultivation.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an aeration device for algae cultivation, comprising a horizontally arranged air supply pipe, with several aeration discs connected to the outer circumference of the air supply pipe, a connecting pipe connected to one end of the air supply pipe, and an external air supply pipe connected to the other end of the connecting pipe, the other end of the external air supply pipe being connected to the input end of an external air supply device, through which air is input into the aeration discs, and the air supply pipe is slidably assembled in the vertical direction; when the liquid level in the algae cultivation pond drops or rises, the air supply pipe moves downward or upward synchronously.

[0006] Preferably, both ends of the gas supply pipe are fitted with movable frames, which are slidably assembled in the vertical direction.

[0007] Preferably, the movable frame is connected to a lead screw via a threaded connection. An upper support is movably mounted on the upper end of the lead screw via a bearing, and a lower support is movably mounted on the lower end of the lead screw via a bearing. The movable frame is also movably sleeved with a guide rod, which is fixedly installed between the upper and lower supports.

[0008] Preferably, a first bevel tooth is fixedly sleeved at the lower end of the lead screw, a second bevel tooth is engaged with the first bevel tooth, a connecting shaft is fixedly sleeved at the center of the second bevel tooth, and one end of the connecting shaft is fixedly connected to the motor shaft of the motor.

[0009] Preferably, the gas supply pipe is rotatable.

[0010] Preferably, the air supply pipe and the movable frame are movably connected; the end of the air supply pipe away from the connecting pipe is a closed structure and a gear is fixedly installed through a short shaft. The gear is meshed with a rack arranged in the vertical direction. The rack is slidably assembled in the guide rail in the vertical direction. The guide rail and the corresponding movable frame are fixedly connected. An electric cylinder is provided above the rack. The piston rod of the electric cylinder is fixedly connected to the upper end of the rack.

[0011] Preferably, the electric cylinder is fixedly connected to the guide rail via a mounting bracket.

[0012] Preferably, several aeration discs are arranged in a linear array.

[0013] Compared with the prior art, this utility model provides an aeration device for algae cultivation, which has the following beneficial effects: (1) In this utility model, the aeration disc can move in the vertical direction, so that it can flexibly adjust its own height according to the change of liquid level, ensuring that the relative distance between the aeration disc and the liquid surface is always in the best state, thereby improving oxygen utilization and reducing oxygen waste.

[0014] (2) When the aeration disc descends to a certain height, its structure allows it to flip from a state perpendicular to the liquid surface to a state parallel to the liquid surface, making the distribution of aeration bubbles more uniform, improving the diffusion efficiency of oxygen in the water, and avoiding situations where the dissolved oxygen is too high or too low in some areas.

[0015] (3) The height-adjustable structure of the aeration disc can adapt to changes in the liquid level, avoiding a decrease in bubble diffusion efficiency or waste of oxygen due to changes in liquid level. When the liquid level rises, the aeration disc moves upward, allowing the bubbles to diffuse fully throughout the water body. When the liquid level falls, the aeration disc moves downward and can be flipped, allowing the aeration area to cover a wider area and increasing the oxygen content and carbon dioxide exchange efficiency of the water body. This flexible adjustment mechanism ensures that algae can obtain a stable gas supply at different growth stages, promoting their metabolic activities and reproduction rate. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the entire aeration device for algae cultivation in the embodiment; Figure 2 This is a schematic diagram of the lifting device assembly in the embodiment; Figure 3 This is a schematic diagram of the assembly of the air supply pipe in the embodiment; Figure 4 This is a schematic diagram of the assembly of the gear and rack in the embodiment.

[0017] In the diagram: 1. Air supply pipe; 11. Movable frame; 12. Lead screw; 13. Upper support; 14. Lower support; 15. Guide rod; 16. First bevel gear; 17. Second bevel gear; 18. Connecting shaft; 19. Motor; 2. Aeration disc; 3. Connecting pipe; 4. External air supply pipe; 51. Gear; 52. Rack; 53. Guide rail; 54. Electric cylinder. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0019] This embodiment proposes an aeration device for algae cultivation, such as... Figures 1 to 4As shown, the system includes a horizontally arranged air supply pipe 1, with several aeration discs 2 connected to its outer circumference. In this embodiment, the aeration discs 2 are arranged in a linear array. One end of the air supply pipe 1 is connected to a connecting pipe 3, and the other end of the connecting pipe 3 is connected to an external air supply pipe 4. The other end of the external air supply pipe 4 is connected to the input end of an external air supply device. Air is supplied to the aeration discs 2 through the external air supply device and ejected through the micropores in the aeration discs 2, thereby forming a cluster of bubbles that diffuse upwards, thus increasing the dissolved oxygen concentration in the water. However, when the water level in the algae cultivation pond is low, the distance between the aeration disc 2 fixed at the bottom of the pond and the liquid surface is short. The oxygen dissolved by the bubbles within the short upward path is limited, and most of the oxygen is not effectively dissolved and escapes into the air, thus wasting oxygen. Therefore, in this invention, the air supply pipe 1 is slidably assembled in the vertical direction. When the liquid level in the algae cultivation pond drops or rises, the air supply pipe 1 moves downward or upward synchronously, so that the relative distance between the aeration disc 2 and the liquid surface is always in the optimal state, thereby improving the oxygen utilization rate and reducing oxygen waste.

[0020] Based on the above scheme, both ends of the air supply pipe 1 are fitted with movable frames 11. The movable frames 11 are slidably assembled in the vertical direction. In this embodiment, the movable frame 11 is moved in the vertical direction by means of a screw structure. Specifically, the movable frame 11 is connected to a screw 12 through a thread. The upper end of the screw 12 is movably mounted with an upper support 13 through a bearing, and the lower end of the screw 12 is movably mounted with a lower support 14 through a bearing. The movable frame 11 is also movably fitted with a guide rod 15, which restricts the rotation of the movable frame 11. The guide rod 15 is fixedly installed between the upper support 13 and the lower support 14. In this embodiment, taking the downward movement of the air supply pipe 1 as an example: the rotation of the screw 12 drives the movable frame 11 to move downward, and the movable frame 11 drives the air supply pipe 1 to move downward.

[0021] To enable the rotation of the lead screw 12, a first bevel tooth 16 is fixedly sleeved at the lower end of the lead screw 12. The first bevel tooth 16 is engaged with a second bevel tooth 17. A connecting shaft 18 is fixedly sleeved at the center of the second bevel tooth 17. One end of the connecting shaft 18 is fixedly connected to the motor shaft of the motor 19. The motor 19 can be arranged outside the algae cultivation pond. The connecting shaft 18 moves through the side wall of the algae cultivation pond, and the penetration is sealed.

[0022] As the liquid level in the algae cultivation pond continues to drop, the air supply pipe 1 can no longer descend after reaching its limit. At this point, the distance between the aeration disc 2 and the liquid surface continues to decrease. In order to improve the diffusion efficiency of oxygen in the water, in this embodiment, the air supply pipe 1 adopts a rotatable design. That is, when the aeration disc 2 descends to a certain height, it flips from a state perpendicular to the liquid surface to a state parallel to the liquid surface, so that the distribution of aeration bubbles is more uniform.

[0023] Specifically, the air supply pipe 1 and the movable frame 11 are movably connected; the end of the air supply pipe 1 away from the connecting pipe 3 is a closed structure and a gear 51 is fixedly installed through a short shaft. The gear 51 is meshed with a rack 52 arranged in the vertical direction. The rack 52 is slidably assembled in the guide rail 53 in the vertical direction. The guide rail 53 and the corresponding movable frame 11 are fixedly connected. An electric cylinder 54 is set above the rack 52. The piston rod of the electric cylinder 54 is fixedly connected to the upper end of the rack 52. The electric cylinder 54 is fixedly connected to the guide rail 53 through a mounting bracket. When the electric cylinder 54 is started, the piston rod of the electric cylinder 54 extends or shortens, thereby driving the rack 52 to move up or down in the vertical direction, thereby causing the air supply pipe 1 to rotate forward or reverse, so that the aeration area is covered more widely and the oxygen content and carbon dioxide exchange efficiency of the water are improved.

[0024] This invention optimizes the gas exchange process in water by adjusting the height and flipping function of the aeration disc 2, thereby improving the carbon dioxide supply to algae and promoting photosynthesis. Specifically, the height-adjustable structure of the aeration disc 2 can adapt to changes in liquid level, avoiding a decrease in bubble diffusion efficiency or oxygen waste due to changes in liquid level. When the liquid level drops, the aeration disc 2 moves downward, allowing bubbles to diffuse fully throughout the water body; when the liquid level rises, the aeration disc 2 moves upward, covering a wider aeration area and increasing the oxygen content and carbon dioxide exchange efficiency of the water. This flexible adjustment mechanism ensures that algae receive a stable gas supply at different growth stages, promoting their metabolic activities and reproduction rate.

[0025] Meanwhile, this structural design reduces oxygen loss caused by depth variations in traditional fixed aeration discs, enabling more precise matching of oxygen and carbon supply, avoiding energy waste caused by over-aeration, reducing the operating energy consumption of the aeration system, and improving the overall efficiency of the aquaculture system. Furthermore, the uniform distribution and optimized diffusion of bubbles effectively reduce localized over- or under-oxygen problems, lowering the instability of the algae growth environment and improving aquaculture yield and quality.

[0026] In the description of this utility model, the terms "first," "second," "another," and "yet another" 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 one or more features. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0028] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An aeration device for algae cultivation, comprising a horizontally arranged air supply pipe (1), wherein a plurality of aeration discs (2) are connected to the outer circumference of the air supply pipe (1), a connecting pipe (3) is connected to one end of the air supply pipe (1), and an external air supply pipe (4) is connected to the other end of the connecting pipe (3), the other end of the external air supply pipe (4) is connected to the input end of an external air supply device, and an air source is input to the aeration discs (2) through the external air supply device, characterized in that: The air supply pipe (1) is slidably assembled in the vertical direction; when the liquid level in the algae culture pond drops or rises, the air supply pipe (1) moves downward or upward synchronously.

2. The aeration device for algae cultivation according to claim 1, characterized in that: Both ends of the air supply pipe (1) are fitted with movable frames (11), which slide along the vertical direction.

3. The aeration device for algae cultivation according to claim 2, characterized in that: The movable frame (11) is connected to the lead screw (12) by a threaded connection. The upper end of the lead screw (12) is movably mounted with an upper support (13) via a bearing, and the lower end of the lead screw (12) is movably mounted with a lower support (14) via a bearing. The movable frame (11) is also movably sleeved with a guide rod (15), which is fixedly installed between the upper support (13) and the lower support (14).

4. An aeration device for algae cultivation according to claim 3, characterized in that: The lower end of the lead screw (12) is fixedly sleeved with a first bevel tooth (16), the first bevel tooth (16) is meshed with a second bevel tooth (17), the center of the second bevel tooth (17) is fixedly sleeved with a connecting shaft (18), and one end of the connecting shaft (18) is fixedly connected to the motor shaft of the motor (19).

5. An aeration device for algae cultivation according to any one of claims 2-4, characterized in that: The gas supply pipe (1) is rotatable.

6. An aeration device for algae cultivation according to claim 5, characterized in that: The air supply pipe (1) and the movable frame (11) are movably connected; the end of the air supply pipe (1) away from the connecting pipe (3) is closed and a gear (51) is fixedly installed through a short shaft. The gear (51) is meshed with a rack (52) arranged in the vertical direction. The rack (52) is slidably assembled in the guide rail (53) in the vertical direction. The guide rail (53) and the corresponding movable frame (11) are fixedly connected. An electric cylinder (54) is provided above the rack (52). The piston rod of the electric cylinder (54) is fixedly connected to the upper end of the rack (52).

7. An aeration device for algae cultivation according to claim 6, characterized in that: The electric cylinder (54) is fixedly connected to the guide rail (53) via a mounting bracket.

8. An aeration device for algae cultivation according to claim 1, characterized in that: Several aeration discs (2) are arranged in a linear array.

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