Sea grass cultivation device

Abstract

The utility model relates to a sea grass cultivation device which comprises a cultivation tank, a first water inlet, a first water outlet, a second water outlet and a cultivation chamber used for cultivating sea grass, the cultivation chamber is located at the bottom of the cultivation tank, and a matrix is laid in the cultivation chamber; the first water inlet is located in the first side of the cultivation tank. The first water outlet and the second water outlet are positioned on the second side of the cultivation tank; the water pumping assembly comprises a water pump and a water inlet pipe, the water inlet pipe is communicated with the first water inlet, and the water pump is arranged on the water inlet pipe; the drainage control assembly comprises a drainage pipe and a drainage control valve, the first water outlet communicates with the drainage pipe, and the second water outlet communicates with the drainage pipe through the drainage control valve; and the controller is connected with the water pump and the drainage control valve. The sea grass cultivation device capable of simulating the tide is favorable for better simulating the growth environment of the sea grass, so that the indoor simulation scientific research experiment result of the sea grass is closer to the natural state.

Description

Technical Field

[0001] The utility model relates to the technical field of seaweed cultivation, in particular to a seaweed cultivation device. Background Art

[0002] Seagrass is the only higher angiosperm on Earth that can live entirely in the sea. It is widely distributed in the intertidal or subtidal shallow waters along the coasts of tropical and temperate seas around the world. Seagrass beds composed of seagrass are known as the three typical shallow sea ecosystems together with mangroves and coral reefs. Seagrass beds are also one of the most efficient carbon sinks known so far. International research results show that the ecological service value of seagrass is significantly higher than that of mangroves and coral reefs. Lush seagrass beds are like forests on land. They are an important sign of a healthy marine environment and are precious "undersea grasslands" or "undersea forests." Seagrass beds are high-productivity areas that can provide good habitats, nurseries and shelters for marine organisms such as fish, shrimp, crabs and shellfish, and are also conducive to the habitat of seabirds; at the same time, they provide an important food source for many organisms. However, in recent years, with the continuous expansion of human activities and the deterioration of the environment, the decline of seagrass beds has become increasingly serious. Therefore, it is particularly necessary to strengthen scientific research on seagrass beds and seagrass plants, which is of great significance to supporting the protection and restoration of seagrass resources, the ecological restoration of seagrass beds, and the protection of the marine ecological environment.

[0003] At present, indoor cultivation systems for seaweed are widely used in scientific research experiments on seaweed, but most indoor seaweed cultivation devices use relatively constant water level conditions. The seawater in the seaweed cultivation tank is regularly replaced, or seawater is continuously supplied, and an overflow port is set to maintain the water level. Affected by the tides, the water level in the natural sea where seaweed grows changes dynamically, especially for small and medium-sized seaweed distributed near the coast, which is more significantly affected by tidal water level changes. There is a big difference between the cultivation conditions at a constant water level and the natural environmental conditions for seaweed growth. Therefore, constructing a seaweed cultivation device that can simulate tides will help to better simulate the environment in which seaweed grows, making the results of indoor simulation scientific research experiments on seaweed closer to the natural state. Utility Model Content

[0004] The utility model aims to provide a seaweed cultivation device, which can be used to simulate the tidal conditions in the natural growth environment of seaweed.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A seaweed cultivation device, comprising:

[0007] A cultivation tank, wherein the cultivation tank is provided with a first water inlet, a first water outlet, a second water outlet, and a cultivation chamber for cultivating seaweed, wherein the cultivation chamber is located at the bottom of the cultivation tank and a substrate is laid in the cultivation chamber; the first water inlet is located at a first side of the cultivation tank and is used to introduce seawater into the cultivation tank; the first water outlet and the second water outlet are located at a second side of the cultivation tank and are used to discharge the seawater in the cultivation tank; the first side is opposite to the second side, and the first water outlet is arranged higher than the second water outlet;

[0008] A water pump assembly, comprising a water pump and a water inlet pipe, wherein the water inlet pipe is connected to the first water inlet, and the water pump is arranged on the water inlet pipe;

[0009] A drainage control assembly, comprising a drainage pipe and a drainage control valve, wherein the first water outlet is connected to the drainage pipe, and the second water outlet is connected to the drainage pipe via the drainage control valve;

[0010] The controller is connected to the water pump and the drainage control valve, and is used to adjust the water inlet flow rate of the first water inlet and the water outlet flow rate of the second water outlet respectively.

[0011] Through the above-mentioned settings, seawater is pumped into the cultivation tank through the water pump assembly, and the water pump and the drainage control valve are controlled by the controller to control the inlet and outlet flow rates of the cultivation tank. By matching different inlet and outlet flow rates, natural tides are simulated. For example, when the water level in the cultivation tank is low, the inlet flow rate is greater than the outlet flow rate. At this time, the water level in the cultivation tank rises, which simulates the high tide state. When the water level in the cultivation tank is high, the inlet flow rate is less than the outlet flow rate. At this time, the water level in the cultivation tank drops, which simulates the low tide state. By simulating natural tides, the cultivation environment of seaweed tends to the native environment. In addition, by setting a matrix to cultivate seaweed, the planting environment of seaweed can be closer to the natural state, which is conducive to the growth of seaweed.

[0012] A partition is provided at the bottom of the cultivation tank, and the partition divides the inner cavity of the cultivation tank into a buffer chamber and a cultivation chamber, the substrate is located in the cultivation chamber, and the first water inlet is located in the buffer chamber. By providing the buffer chamber, the incoming water can be buffered to prevent the incoming water from excessively scouring the seaweed (or attached seaweed seeds) cultivated in the substrate, while simulating the natural living environment of the seaweed, it can also provide a relatively stable growth space for the seaweed, which is conducive to the growth of the seaweed.

[0013] The first water inlet is opened downward; a drain pipe is also provided at the bottom of the buffer chamber, and a drain valve is provided on the drain pipe. The first water inlet is opened downward to ensure that the incoming water will not impact the substrate and will not easily splash out of the cultivation tank. By providing the drain pipe, the water in the cultivation tank can be easily drained when needed.

[0014] At least one cultivation module is provided in the cultivation room, and the substrate is laid in the cultivation module. The substrates in different cultivation modules are the same or different; the second water outlet is higher than the upper surface of the substrate or lower than the upper surface of the substrate. After such arrangement, different substrates can be laid in different cultivation modules to adapt to different types of seaweed, thereby realizing different cultivation methods in one cultivation room.

[0015] The cultivation tank is provided with a wave maker, and the wave maker is connected to a controller; the cultivation tank is provided with a heating element, and a lighting element is provided above the cultivation tank, and the heating element and the lighting element are connected to a controller. By providing the wave maker, the utility model can better simulate the natural growth environment of seaweed, and by providing the heating element and the lighting element, the day and night changes and the corresponding temperature changes can be simulated, which is conducive to the growth of seaweed.

[0016] The drainage control assembly also includes a manual valve, and the second water outlet is also connected to the drainage pipe through the manual valve; the cultivation tank is also provided with a second water inlet for introducing fresh water, and the second water inlet is provided with a water inlet valve, and the water inlet valve is connected to the controller. By setting the manual valve, manual participation in regulation can be made when the drainage control valve is damaged to ensure the growth and cultivation of seaweed in the current cultivation cycle. By setting the second water inlet, the seawater concentration in the cultivation tank can be adjusted to ensure the normal growth of seaweed, and it can also be well adapted to the cultivation of different types of seaweed.

[0017] The seaweed cultivation device also includes a filter container, which is provided with a filter area and a water purification area, the water inlet pipe is connected to the water purification area of ​​the filter container, and the drain pipe is connected to the filter area of ​​the filter container; the seaweed cultivation device also includes a placement rack, the filter container is placed on the lower layer of the placement rack, and the cultivation tank is placed on the upper layer of the placement rack. By providing a filter container, the recycling of the cultivation seawater can be achieved, the cost of seawater transportation can be reduced, and it is also beneficial to maintain the stability of the water environment during the cultivation period. By providing a placement rack, the cultivation device can occupy a smaller area, and drainage can be achieved through the height difference.

[0018] After adopting the above scheme, seawater is pumped into the cultivation tank through the water pump assembly, and the water pump and the drainage control valve are controlled by the controller to control the water inlet and outlet flow rates of the cultivation tank. By matching different water inlet flow rates and water outlet flow rates, the natural tide is simulated. For example, when the water level of the cultivation tank is low, the water inlet flow rate is greater than the water outlet flow rate. At this time, the water level in the cultivation tank rises, which is a simulated high tide state. When the water level of the cultivation tank is high, the water inlet flow rate is less than the water outlet flow rate. At this time, the water level in the cultivation tank drops, which is a simulated low tide state. By simulating natural tides, the cultivation environment of seaweed tends to the native environment. In addition, by setting a matrix to cultivate seaweed, the planting environment of seaweed can be closer to the natural state, which is conducive to the growth of seaweed. The seaweed cultivated by the utility model is closer to the seaweed grown in the natural environment. Then, when the seaweed obtained by the utility model is used for scientific research, more accurate research data can be provided, thereby providing more accurate data support for relevant research on seaweed beds. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the utility model;

[0020] Figure 2 It is a cross-sectional view of the utility model.

[0021] Marking Description:

[0022] Cultivation tank 10, first water inlet 11, first water outlet 12, second water outlet 13, partition 14, matrix 15, buffer chamber 16, cultivation chamber 17, drain pipe 18, drain valve 19, second water inlet 1a;

[0023] Placement rack 20;

[0024] Filter container 30, filter cotton 31, water purification area 32, filter area 33;

[0025] Water pump 41, water inlet pipe 42;

[0026] Wave maker 50;

[0027] Drain pipe 61, drain control valve 62, manual valve 63. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0030] like Figure 1-2 As shown, the utility model discloses a seaweed cultivation device, which includes: a cultivation tank 10, a placement rack 20, a filter container 30, a pump assembly, a drainage control assembly and a controller. The cultivation tank 10 is arranged on the upper layer of the placement rack 20 for cultivating seaweed, and the filter container 30 is arranged on the lower layer of the placement rack 20 for filtering the cultivation seawater. The filter container 30 can adopt a multi-level sedimentation filter, and the water entering the filter container 30 can be filtered by a filter cotton 31. The pump assembly is used to pump the filtered seawater into the cultivation tank 10. The pump assembly includes a water pump 41 and a water inlet pipe 42. The lower end of the water inlet pipe 42 is inserted into the clean water area 32 of the filter container 30, and the upper end of the water inlet pipe 42 extends into the cultivation tank 10. The water pump 41 is connected to the controller. The water outlet of the cultivation tank 10 is connected to the filter area 33 of the filter container 30, thereby constructing the recycling of the cultivation seawater. The cultivation tank 10 can be made of transparent material to facilitate the cultivation staff to observe the growth of seaweed.

[0031] The cultivation tank 10 is provided with a first water inlet 11, a second water inlet 1a, a first water outlet 12, a second water outlet 13, a partition 14 and a matrix 15 for cultivating seaweed. The partition 14 is arranged at the bottom of the cultivation tank 10. The partition 14 divides the inner cavity of the cultivation tank 10 into a buffer chamber 16 and a cultivation chamber 17. The matrix 15 is arranged at the bottom of the cultivation chamber 17, and the thickness of the matrix 15 is not greater than the height of the partition 14. The matrix 15 can be attached to seaweed (or seaweed seeds) and is also conducive to the seaweed to absorb nutrients. The matrix 15 can be adjusted according to the type of seaweed. For example, when planting Tailai grass and single-veined two-herb grass, the matrix 15 can be sandy or coral sand, while when planting Baker's salt grass and egg-leaved salt grass, the matrix 15 is set to muddy sand. In addition, at least one cultivation module can be arranged in the cultivation room 17, and the substrate 15 is laid in the cultivation module. The substrates 15 in different cultivation modules are the same or different. In this way, different cultivation methods can be realized in the same cultivation room 17. For example, muddy sandy substrates 15 are laid in some cultivation modules to cultivate Ovum halophilum, while coral sand substrates 15 are laid in another part of the cultivation modules to cultivate Tylla splendens. The cultivation module can be a permeable container, such as a square plastic basket.

[0032] The mouth of the water inlet pipe 42 extends into the buffer chamber 16, and the mouth of the water inlet pipe 42 is set downward. The mouth of the water inlet pipe 42 can be directly used as the first water inlet 11 of the cultivation tank 10. Of course, a first water inlet 11 can also be specially set on the cultivation tank 10, and the water inlet pipe 42 is connected to the first water inlet 11. The second water inlet 1a also extends into the buffer chamber 16 and opens downward. The second water inlet 1a is used to introduce fresh water. A water inlet valve is also provided on the second water inlet 1a, and the water inlet valve is connected to a controller. This setting can buffer the incoming water and prevent the incoming water from excessively scouring the seaweed (or attached seaweed seeds) cultivated in the matrix 15. While simulating the natural living environment of seaweed, it can also provide a relatively stable growth space for seaweed, which is conducive to the growth of seaweed.

[0033] A drain pipe 18 is also provided at the bottom of the buffer chamber 16, and a drain valve 19 is provided on the drain pipe 18. By providing the drain pipe 18, the water in the culture tank 10 can be easily drained when needed. In addition, a wave maker 50 and a heating element are also provided in the buffer chamber 16, and a lighting element is provided above the culture tank 10. The wave maker 50, the heating element and the lighting element are all connected to the controller. The wave maker 50 is used to create water waves to simulate the waves in the natural seawater environment, and the lighting element is used to provide illumination. By placing the device in a dark environment and cooperating with the lighting element, the changes of day and night can be simulated, and the heating element can control the water temperature and simulate the temperature difference between day and night.

[0034] The first water inlet 11 is defined as being located at the first side of the culture tank 10, and the first water outlet 12 and the second water outlet 13 are located at the second side of the culture tank 10, and the first side is opposite to the second side. In addition, the first water outlet 12 is arranged higher than the second water outlet 13, and the second water outlet 13 is higher than the upper surface of the substrate 15 or lower than the upper surface of the substrate 15. The type of seaweed cultivated when the second water outlet 13 is higher than the upper surface of the substrate 15 is different from the type of seaweed cultivated when the second water outlet 13 is lower than the upper surface of the substrate 15. Figure 1 and Figure 2 The figure shows a situation where the second water outlet 13 is higher than the upper surface of the substrate 15 .

[0035] The drainage control assembly includes a drainage pipe 61 and a drainage control valve 62. The first water outlet 12 is connected to the filter area 33 of the filter container 30 through the drainage pipe 61, and the lower end of the drainage pipe 61 is directly suspended above the filter area 33. The second water outlet 13 is connected to the drainage pipe 61 through the drainage control valve 62. The drainage control valve 62 is an electric valve with adjustable opening, and the drainage control valve 62 is connected to the controller. In addition, a manual valve 63 can also be set, and the second water outlet 13 is also connected to the drainage pipe 61 through the manual valve 63. By setting the manual valve 63, manual participation in regulation can be made when the drainage control valve 62 is damaged. Through the above settings, the recycling of cultivation seawater can be constructed.

[0036] The seaweed cultivation device mentioned above cultivates seaweed in the following manner: seaweed is planted in the matrix 15 of the cultivation chamber 17, and the controller controls the water pump 41 and the drainage control valve 62 to adjust the water inlet flow rate of the first water inlet 12 and the water outlet flow rate of the second water outlet 13 respectively to simulate the tidal growth environment, so as to cultivate the seaweed. Specifically, the seaweed cultivation process includes an initial state and a tidal state, and the tidal state includes a low tide period, a high tide period, a high tide period, and a low tide period.

[0037] Initial state: the controller starts the water pump 41, the first water inlet 11 supplies water to the cultivation tank 10, the water level in the cultivation tank 10 gradually rises to the position of the second water outlet 13, and then enters the low tide period or the high tide period.

[0038] Alternatively, the controller starts the water pump 41 and closes the drainage control valve 62, the first water inlet 11 supplies water to the cultivation tank 10, the water level in the cultivation tank 10 gradually rises to the position of the first water outlet 12, and then enters the high tide period or low tide period.

[0039] Low tide period: the controller controls the water pump 41 and the drainage control valve 62 so that the water inlet flow rate of the first water inlet 11 is equal to the water outlet flow rate of the second water outlet 13, and the water level in the cultivation tank 10 is maintained at the position of the second water outlet 13 for time T1; after the maintenance time reaches T1, it enters the high tide period.

[0040] One of the specific control methods during low tide is: the controller turns off the water pump 41 and the drainage control valve 62, so that the water inlet flow rate of the first water inlet 11 and the water outlet flow rate of the second water outlet 13 are both 0. At this time, the water level in the cultivation tank 10 can be kept at a low level. The advantage is that it is free from control, and the disadvantage is that the water does not flow.

[0041] As the second specific control method during low tide, the controller starts the water pump 41 and the drainage control valve 62, so that the water inlet flow rate of the first water inlet 11 and the water outlet flow rate of the second water outlet are both greater than 0 and equal, and the low water level is maintained by keeping the inlet and outlet water flow rates consistent, so that the water in the cultivation tank 10 can flow.

[0042] High tide period: The controller controls the water pump 41 and the drainage control valve 62 so that the water inlet flow rate of the first water inlet 11 is greater than the water outlet flow rate of the second water outlet 13, and the water level in the cultivation tank 10 gradually rises to the position of the first water outlet 12, and then enters the high tide period.

[0043] One of the specific control methods during the high tide period is: the controller starts the water pump 41, closes the drainage control valve 62, the water inlet flow rate of the first water inlet 11 is greater than 0, and the water outlet flow rate of the second water outlet is 0. This control is convenient and simple, and is easier to stabilize. The high tide time can be controlled by controlling the water inlet flow rate of the first water inlet 11.

[0044] As the second specific control method during the high tide period, the controller starts the water pump 41 and the drainage control valve 62, and the water inlet flow rate of the first water inlet 11 and the water outlet flow rate of the second water outlet 13 are both greater than 0, and the water inlet flow rate of the first water inlet 11 is greater than the water outlet flow rate of the second water outlet 13. In this way, the water level is raised by controlling the difference in inlet and outlet water flow rates, and the fluidity of seawater in the breeding tank 10 is stronger. In this mode, the high tide time is controlled by controlling the water inlet flow rate of the first water inlet 11 and the water outlet flow rate of the second water outlet 13.

[0045] High tide period: the controller controls the water pump 41 and the drainage control valve 62 so that the water inlet flow rate of the first water inlet 11 is equal to the sum of the water outlet flow rates of the first water outlet 12 and the second water outlet 13. The water level in the cultivation tank 10 is maintained at the first water outlet 12 and maintained for time T2. After the maintenance time reaches T2, it enters the low tide period.

[0046] One of the specific control methods during the climax period is: the controller turns off the water pump 41 and the drainage control valve 62, so that the water inlet flow rate of the first water inlet 11 and the water outlet flow rate of the second water outlet are both 0. This control is simple, but the disadvantage is that the water body does not flow. As the second specific control method during the climax period, the controller starts the water pump 41, closes the drainage control valve 62, the water inlet flow rate of the first water inlet 11 is greater than 0 and equal to the water outlet flow rate of the first water outlet 12, and the water outlet flow rate of the second water outlet 13 is 0. This setting can ensure the fluidity of the water body in the cultivation tank 10.

[0047] As the third specific control method during the climax period, the controller starts the water pump 41 and the drainage control valve 62, the water inlet flow rate of the first water inlet 11 is greater than 0, the water outlet flow rate of the second water outlet 13 is greater than 0, and the water inlet flow rate of the first water inlet 11 is equal to the sum of the water outlet flow rates of the first water outlet 12 and the second water outlet 13. This arrangement can make the water bodies at high and low places in the breeding tank 10 flow and circulate well.

[0048] Low tide period: The controller controls the water pump 41 and the drainage control valve 62 so that the water inlet flow rate of the first water inlet 11 is less than the sum of the water outlet flow rates of the first water outlet 12 and the second water outlet 13. The water level in the cultivation tank 10 gradually drops to the position of the second water outlet 13, and then enters the low tide period.

[0049] One of the specific control methods during the low tide period is: the controller turns off the water pump 41, starts the drainage control valve 62, the water inlet flow rate of the first water inlet 11 is 0, and the water outlet flow rate of the second water outlet is greater than 0. This setting makes the tide recede quickly and the control is easier and more stable. The disadvantage is that there is no water inlet. In this state, you only need to control the water outlet flow rate of the second water outlet 13 to control the low tide time.

[0050] As the second specific control method during the low tide period, the controller starts the water pump 41 and the drainage control valve 62, and the water inlet flow rate of the first water inlet 11 and the water outlet flow rate of the second water outlet 13 are both greater than 0, and the water inlet flow rate of the first water inlet 11 is less than the water outlet flow rate of the second water outlet 13. After this setting, the water in the breeding tank 10 can flow. In this state, the low tide time is controlled by controlling the water inlet flow rate of the first water inlet 11 and the water outlet flow rate of the second water outlet 13.

[0051] In addition, during the cultivation of seaweed, if the concentration of seawater introduced by the first water inlet 11 is greater than the concentration of seawater required for cultivation, the controller starts the water inlet valve to introduce fresh water into the cultivation chamber from the second water inlet 1a. This setting can adjust the concentration of seawater in the cultivation tank to ensure the normal growth of seaweed, and can also be well adapted to the cultivation of different types of seaweed.

[0052] The key of the utility model is to pump seawater into the cultivation tank 10 through the pump assembly, control the water pump 41 and the drainage control valve 62 through the controller, and then control the water inlet and outlet flow rates of the cultivation tank 10, and simulate the natural tide by matching different water inlet flow rates and water outlet flow rates. For example, when the cultivation tank 10 is at a low water level, the water inlet flow rate is greater than the water outlet flow rate. At this time, the water level in the cultivation tank 10 rises, which is a simulated high tide state, and when the cultivation tank 10 is at a high water level, the water inlet flow rate is less than the water outlet flow rate. At this time, the water level in the cultivation tank 10 drops, which is a simulated low tide state. By simulating the natural tide, the cultivation environment of seaweed tends to the native environment. In addition, by setting a matrix to cultivate seaweed, the planting environment of seaweed can be made closer to the natural state, which is conducive to the growth of seaweed. The seaweed cultivated by the utility model is closer to the seaweed grown in the natural environment. Then, when the seaweed obtained by the utility model is used for scientific research, more accurate research data can be provided, thereby providing more accurate data support for the relevant research on seaweed beds.

[0053] The above description is only an embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A seaweed cultivation device, characterized in that: include: A cultivation tank, wherein the cultivation tank is provided with a first water inlet, a first water outlet, a second water outlet, and a cultivation chamber for cultivating seaweed, wherein the cultivation chamber is located at the bottom of the cultivation tank and a substrate is laid in the cultivation chamber; the first water inlet is located at a first side of the cultivation tank and is used to introduce seawater into the cultivation tank; the first water outlet and the second water outlet are located at a second side of the cultivation tank and are used to discharge the seawater in the cultivation tank; the first side is opposite to the second side, and the first water outlet is arranged higher than the second water outlet; A water pump assembly, comprising a water pump and a water inlet pipe, wherein the water inlet pipe is connected to the first water inlet, and the water pump is arranged on the water inlet pipe; A drainage control assembly, comprising a drainage pipe and a drainage control valve, wherein the first water outlet is connected to the drainage pipe, and the second water outlet is connected to the drainage pipe via the drainage control valve; The controller is connected to the water pump and the drainage control valve, and is used to adjust the water inlet flow rate of the first water inlet and the water outlet flow rate of the second water outlet respectively.

2. A seaweed cultivation device according to claim 1, characterized in that: A partition is provided at the bottom of the cultivation tank, and the partition divides the inner cavity of the cultivation tank into a buffer chamber and a cultivation chamber, and the first water inlet is located in the buffer chamber.

3. A seaweed cultivation device according to claim 1, characterized in that: At least one cultivation module is provided in the cultivation chamber, the substrate is laid in the cultivation module, and the substrates in different cultivation modules are the same or different; the second water outlet is higher than the upper surface of the substrate or lower than the upper surface of the substrate.

4. A seaweed cultivation device according to claim 2, characterized in that: The first water inlet is opened downward; a drain pipe is also provided at the bottom of the buffer chamber, and a drain valve is provided on the drain pipe.

5. The seaweed cultivation device according to claim 1, characterized in that: A wave maker is arranged in the cultivation tank, and the wave maker is connected to a controller.

6. The seaweed cultivation device according to claim 1, characterized in that: A heating element is arranged in the cultivation tank, and a lighting element is arranged above the cultivation tank. The heating element and the lighting element are connected to a controller.

7. The seaweed cultivation device according to claim 1, characterized in that: The drainage control assembly also includes a manual valve, and the second water outlet is also connected to a drainage pipe via the manual valve.

8. The seaweed cultivation device according to claim 1, characterized in that: The cultivation tank is also provided with a second water inlet for introducing fresh water, and the second water inlet is provided with a water inlet valve, and the water inlet valve is connected to a controller.

9. The seaweed cultivation device according to claim 1, characterized in that: The seaweed cultivation device also includes a filter container, which is provided with a filter area and a water purification area. The water inlet pipe is connected to the water purification area of ​​the filter container, and the drain pipe is connected to the filter area of ​​the filter container.

10. A seaweed cultivation device according to claim 9, characterized in that: The seaweed cultivation device also includes a placement rack, the filter container is placed on the lower layer of the placement rack, and the cultivation tank is placed on the upper layer of the placement rack.

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