A seaweed cultivation device and method

Abstract

The present application relates to a kind of seaweed cultivation device and method, seaweed cultivation device includes: cultivation jar, with first water inlet, first water outlet, second water outlet and for cultivating seaweed cultivation room, cultivation room is located at the bottom of cultivation jar, and substrate is laid in cultivation room;First water inlet is located at the first side of cultivation jar;First water outlet and second water outlet are located at the second side of cultivation jar;Pump water component, including water pump and water inlet pipe, water inlet pipe is communicated with first water inlet, and the water pump is set on water inlet pipe;Drainage control component, including drain pipe and drainage control valve, first water outlet is communicated with drain pipe, and second water outlet is communicated with drain pipe through drainage control valve;Controller, connect the water pump and drainage control valve.The present application constructs a kind of seaweed cultivation device and method that can simulate tide, it is helpful to better simulate the environment of seaweed growth, so that the indoor simulation scientific research experiment result of seaweed is closer to natural state.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of seaweed cultivation, and particularly relates to a seaweed cultivation device and a seaweed cultivation method. BACKGROUND

[0002] Seagrass is the only higher plant that can live completely in the sea on the earth, and is widely distributed in the intertidal zone or subtidal zone shallow water area along the coast of the global tropics and temperate sea areas. The seagrass bed composed of seagrass, mangrove forest and coral reef are called the three typical ecosystems in the shallow sea, and the seagrass bed is one of the highest efficiency carbon sinks known at present. International research results show that the ecological service value of seagrass is obviously higher than that of mangrove forest and coral reef. The flourishing seagrass field is like a forest on land, and is an important symbol of a healthy marine environment, and is a precious "underwater prairie" or "underwater forest". The seagrass bed is a high productivity area, and can provide a good habitat, a breeding ground and a shelter for marine organisms such as fish, shrimp, crab and shellfish, and is also conducive to the habitat of seabirds. At the same time, it provides an important food source for many organisms. However, in recent years, with the continuous expansion of human activities and environmental deterioration, the seagrass bed is declining, and therefore, it is particularly necessary to strengthen the scientific research of the seagrass bed and seagrass plants, which has a very important significance for supporting the protection and restoration of seagrass resources, the ecological restoration of seagrass beds and the protection of marine ecological environment.

[0003] At present, the indoor seaweed cultivation system is widely used in the scientific research experiment of seaweed, but the indoor seaweed cultivation device mostly adopts a relatively constant water level condition, and the seawater in the seaweed cultivation tank is periodically replaced or continuously supplied, and an overflow port is arranged to maintain the water level. Due to the effect of tides, the water level of the natural sea area where the seagrass grows is dynamically changed, and especially the small and medium-sized seagrass distributed in the near shore is more obviously affected by the change of tidal water level. There is a big difference between the cultivation condition of constant water level and the natural environment condition of seagrass growth. Therefore, it is helpful to better simulate the environment of seagrass growth by constructing a seaweed cultivation device and method capable of simulating tides, so that the indoor simulation scientific research experiment result of seagrass is closer to the natural state. SUMMARY

[0004] The purpose of the present application is to provide a seaweed cultivation device and method which can be used to simulate the tidal conditions of the natural growth environment of seagrass.

[0005] To achieve the above purpose, the technical scheme adopted by the present application is:

[0006] A seaweed cultivation device comprises:

[0007] 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, the cultivation chamber is located at the bottom of the cultivation tank, and the substrate is laid in the cultivation chamber; the first water inlet is located at the first side of the cultivation tank for introducing seawater into the cultivation tank; the first water outlet and the second water outlet are located at the second side of the cultivation tank for discharging seawater in the cultivation tank; the first side and the second side are opposite directions, and the first water outlet is higher than the second water outlet;

[0008] The pump water 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;

[0009] The drainage control assembly comprises a drainage pipe and a drainage control valve, the first water outlet is communicated with the drainage pipe, and the second water outlet is communicated with the drainage pipe through the drainage control valve;

[0010] The controller is connected with the water pump and the drainage control valve for adjusting the water inflow rate of the first water inlet and the water outflow rate of the second water outlet respectively.

[0011] Through the above arrangement, seawater is pumped into the cultivation tank through the pump water assembly, the water pump and the drainage control valve are controlled by the controller, and then the water inflow rate and the water outflow rate of the cultivation tank are controlled, different water inflow rates and water outflow rates are matched, and then the natural tide is simulated, for example, when the water level in the cultivation tank is low, the water inflow rate is greater than the water outflow rate, at this time, the water level in the cultivation tank rises, that is, the rising tide state is simulated, and when the water level in the cultivation tank is high, the water inflow rate is less than the water outflow rate, at this time, the water level in the cultivation tank falls, that is, the ebb tide state is simulated. By simulating the natural tide, the cultivation environment of seaweed tends to be the original environment. In addition, the seaweed is cultivated by the substrate, so that the planting environment of the seaweed is closer to the natural state, which is beneficial to the growth of the seaweed.

[0012] The bottom of the cultivation tank is provided with a partition plate, the inner cavity of the cultivation tank is divided into a buffer chamber and a cultivation chamber by the partition plate, the substrate is located in the cultivation chamber, and the first water inlet is located in the buffer chamber. By arranging the buffer chamber, the water inflow can be buffered, and the seaweed (or attached seaweed seeds) cultivated in the substrate can be prevented from being excessively washed by the water inflow. While simulating the natural living environment of seaweed, a relatively stable growth space for seaweed is also provided, which is beneficial to the growth of seaweed.

[0013] The first water inlet opening is arranged downward; the bottom of the buffer chamber is further provided with a drain pipe, and the drain pipe is provided with a drain valve. The downward arrangement of the first water inlet opening can ensure that the water inflow will not impact the substrate and will not easily splash out of the cultivation tank. By arranging the drain pipe, the water in the cultivation tank can be easily drained when needed.

[0014] The cultivation chamber is provided with at least one cultivation module, and the substrate is laid in the cultivation module; the substrates in different cultivation modules are the same or different; and the second water outlet is higher than 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 kinds of seaweed, so that different cultivation modes are realized in one cultivation chamber.

[0015] The cultivation tank is provided with a wave maker connected to the controller; the cultivation tank is provided with a heating element; the upper portion of the cultivation tank is provided with an illumination element; and the heating element and the illumination element are connected to the controller. By arranging the wave maker, the natural growth environment of seaweed can be better simulated; by arranging the heating element and the illumination element, the day-night change and the corresponding temperature change can be simulated, which is beneficial to the growth of seaweed.

[0016] The drainage valve control assembly further comprises a manual valve, the second water outlet is communicated with the drainage pipe through the manual valve; the cultivation tank is further provided with a second water inlet for introducing fresh water, the second water inlet is provided with a water inlet valve, and the water inlet valve is connected to the controller. By arranging the manual valve, manual participation in regulation and control can be realized when the drainage control valve is damaged, so that the growth and cultivation of seaweed in the current cultivation period are ensured. By arranging the second water inlet, the seawater concentration in the cultivation tank can be adjusted, the normal growth of seaweed is ensured, and different kinds of seaweed can be well adapted.

[0017] The seaweed cultivation device further comprises a filter container provided with a filtering area and a water purification area, the water inlet pipe is communicated with the water purification area of the filter container, and the drainage pipe is communicated with the filtering area of the filter container; the seaweed cultivation device further comprises a placing rack, the filter container is arranged on the lower layer of the placing rack, and the cultivation tank is arranged on the upper layer of the placing rack. By arranging the filter container, the recycling use of cultivation seawater can be realized, the seawater transportation cost is reduced, and the stability of the water body environment in the cultivation period is maintained. By arranging the placing rack, the land occupation area of the cultivation device is smaller, and the drainage can be realized through the drop.

[0018] The application further discloses a seaweed cultivation method using the seaweed cultivation device.

[0019] The seaweed cultivation process comprises an initial state and a tidal state, and the tidal state comprises a low tide period, a rising tide period, a high tide period and a falling tide period.

[0020] The initial state: the controller starts the water pump, the first water inlet supplies water to the cultivation tank, and the water level in the cultivation tank gradually rises to the position of the second water outlet; then the low tide period or the rising tide period is entered.

[0021] Alternatively, the controller starts the water pump and closes the drain control valve, the first water inlet supplies water to the cultivation tank, and the water level in the cultivation tank gradually rises to the first water outlet position; then enters the high tide period or the ebb tide period;

[0022] The ebb tide period: the controller controls the water pump and the drain control valve, so that the water inflow rate of the first water inlet is equal to the water outflow rate of the second water outlet, and the water level in the cultivation tank is maintained at the second water outlet position for a time T1; after the maintenance time reaches T1, the rising tide period is entered;

[0023] The rising tide period: the controller controls the water pump and the drain control valve, so that the water inflow rate of the first water inlet is greater than the water outflow rate of the second water outlet, and the water level in the cultivation tank gradually rises to the first water outlet position, and then enters the high tide period;

[0024] The high tide period: the controller controls the water pump and the drain control valve, so that the water inflow rate of the first water inlet is equal to the sum of the water outflow rates of the first water outlet and the second water outlet, and the water level in the cultivation tank is maintained at the first water outlet position for a time T2; after the maintenance time reaches T2, the ebb tide period is entered;

[0025] The ebb tide period: the controller controls the water pump and the drain control valve, so that the water inflow rate of the first water inlet is less than the sum of the water outflow rates of the first water outlet and the second water outlet, and the water level in the cultivation tank gradually decreases to the second water outlet position, and then enters the low tide period.

[0026] Through the above setting, the application can well simulate natural tides, so that the growth environment of the seagrass tends to be more natural, which is beneficial to the survival and growth of the seagrass, and is particularly suitable for cultivating seagrass in the intertidal zone.

[0027] The ebb tide period: the controller closes the water pump and the drain control valve, so that the water inflow rate of the first water inlet and the water outflow rate of the second water outlet are both 0; or the controller starts the water pump and the drain control valve, so that the water inflow rate of the first water inlet and the water outflow rate of the second water outlet are greater than 0 and equal;

[0028] The rising tide period: the controller starts the water pump and closes the drain control valve, so that the water inflow rate of the first water inlet is greater than 0, and the water outflow rate of the second water outlet is 0; or the controller starts the water pump and the drain control valve, so that the water inflow rate of the first water inlet and the water outflow rate of the second water outlet are both greater than 0, and the water inflow rate of the first water inlet is greater than the water outflow rate of the second water outlet;

[0029] The high tide period: the controller closes the water pump and the drainage control valve, so that the water inflow rate of the first water inlet and the water outflow rate of the second water outlet are both 0; or the controller starts the water pump and closes the drainage control valve, the water inflow rate of the first water inlet is greater than 0 and equal to the water outflow rate of the first water outlet, and the water outflow rate of the second water outlet is 0; or the controller starts the water pump and the drainage control valve, the water inflow rate of the first water inlet is greater than 0, the water outflow rate of the second water outlet is greater than 0, and the water inflow rate of the first water inlet is equal to the sum of the water outflow rates of the first water outlet and the second water outlet.

[0030] The ebb period: the controller closes the water pump and starts the drainage control valve, the water inflow rate of the first water inlet is 0, and the water outflow rate of the second water outlet is greater than 0; or the controller starts the water pump and the drainage control valve, and the water inflow rate of the first water inlet and the water outflow rate of the second water outlet are both greater than 0, and the water inflow rate of the first water inlet is less than the water outflow rate of the second water outlet.

[0031] By setting different simulation modes of each period of the tide, different choices can be provided, and the switching and control of the tide mode are more flexible.

[0032] During the cultivation of the seagrass, if the concentration of the seawater introduced through the first water inlet is greater than the required seawater concentration for cultivation, the controller starts the water inlet valve to introduce fresh water from the second water inlet to the cultivation chamber. This setting can adjust the seawater concentration in the cultivation tank to ensure the normal growth of the seagrass and can also be well adapted to cultivate different types of seagrass.

[0033] After the above scheme is adopted, seawater is pumped into the cultivation tank through the water pumping assembly, the water inflow and outflow rates of the cultivation tank are controlled through the controller controlling the water pump and the drainage control valve, different water inflow and outflow rates are matched, and then the natural tide is simulated. For example, when the cultivation tank is at a low water level, the water inflow rate is greater than the water outflow rate, at this time, the water level in the cultivation tank rises, which is the simulation of the rising tide state. When the cultivation tank is at a high water level, the water inflow rate is less than the water outflow rate, at this time, the water level in the cultivation tank falls, which is the simulation of the ebb tide state. By simulating the natural tide, the cultivation environment of the seagrass tends to be the original environment. In addition, by setting the substrate to cultivate the seagrass, the planting environment of the seagrass can be closer to the natural state, which is beneficial to the growth of the seagrass. The seagrass cultivated by the present application is closer to the seagrass grown in the natural environment, so that when the seagrass obtained by the present application is used for scientific research, more accurate research data can be provided, thereby providing more accurate data support for the related research of the seagrass bed. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 is a schematic view of the present application;

[0035] Figure 2 is a sectional view of the present application.

[0036] Label description:

[0037] Cultivation tank 10, first water inlet 11, first water outlet 12, second water outlet 13, partition 14, substrate 15, buffer chamber 16, cultivation chamber 17, emptying pipe 18, emptying valve 19, second water inlet 1a;

[0038] Placing rack 20;

[0039] Filtering container 30, filter cotton 31, clean water area 32, filtering area 33;

[0040] Water pump 41, water inlet pipe 42;

[0041] Wave maker 50;

[0042] Drain pipe 61, drain control valve 62, manual valve 63. DETAILED DESCRIPTION

[0043] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the following will be a clear and complete description of the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0044] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the present application.

[0045] As Figures 1-2 shown, the present application discloses a seaweed cultivation device, which comprises a cultivation tank 10, a placing rack 20, a filtering container 30, a water pumping assembly, a drain control assembly and a controller. The cultivation tank 10 is arranged on the upper layer of the placing rack 20 for cultivating seaweed, the filtering container 30 is arranged on the lower layer of the placing rack 20 for filtering the cultivation seawater, the filtering container 30 can adopt a multi-level sedimentation filter, and in addition, the water entering the filtering container 30 can be filtered by filter cotton 31. The water pumping assembly is used for pumping the filtered seawater into the cultivation tank 10, and the water pumping assembly comprises 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 filtering container 30, the upper end of the water inlet pipe 42 extends into the cultivation tank 10, and the water pump 41 is connected to the controller. The water outlet of the cultivation tank 10 is connected to the filtering area 33 of the filtering container 30, thereby constructing the recycling use of the cultivation seawater. The cultivation tank 10 can be made of transparent material, so as to facilitate the observation of the growth of seaweed by cultivation workers.

[0046] 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 plate 14 and a substrate 15 for cultivating seaweed, the partition plate 14 is arranged at the bottom of the cultivation tank 10, the partition plate 14 divides the inner cavity of the cultivation tank 10 into a buffer chamber 16 and a cultivation chamber 17, the substrate 15 is arranged at the bottom of the cultivation chamber 17, and the thickness of the substrate 15 is not greater than the height of the partition plate 14. The substrate 15 can be used for seaweed (or seaweed seeds) to adhere, and is also beneficial for seaweed to absorb nutrients. The substrate 15 can be adjusted according to the type of seaweed, such as planting Thalassia hemprichii and Enhalus acoroides, the substrate 15 can be sandy or coral sand, and planting Halophila beccarii and Halodule pinifolia, the substrate 15 is arranged to be muddy and sandy. In addition, at least one cultivation module can be arranged in the cultivation chamber 17, the substrate 15 is laid in the cultivation module, and the substrates 15 in different cultivation modules are the same or different, so that different cultivation modes can be realized in the same cultivation chamber 17, such as laying muddy and sandy substrates 15 in some cultivation modules for cultivating Halodule pinifolia, and laying coral sand substrates 15 in another part of the cultivation modules for cultivating Thalassia hemprichii. The cultivation module can be a water-permeable container, such as a square plastic basket.

[0047] The pipe opening of the water inlet pipe 42 extends into the buffer chamber 16, and the pipe opening of the water inlet pipe 42 is arranged downward, the pipe opening 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 arranged on the cultivation tank 10, and the water inlet pipe 42 is communicated to the first water inlet 11. The second water inlet 1a also extends into the buffer chamber 16 and opens downward, and the second water inlet 1a is used for introducing fresh water. The second water inlet 1a is also provided with a water inlet valve, and the water inlet valve is connected to the controller. In this way, the water inlet can be buffered, and excessive flushing of the seaweed (or attached seaweed seeds) cultivated in the substrate 15 can be avoided, while simulating the natural living environment of seaweed, a relatively stable growth space can also be provided for the seaweed, which is beneficial for the growth of the seaweed.

[0048] A drain pipe 18 is also arranged at the bottom of the buffer chamber 16, the drain pipe 18 is provided with a drain valve 19, and the inner water of the cultivation tank 10 can be conveniently drained when needed by arranging the drain pipe 18. In addition, a wave maker 50 and a heating element are also arranged in the buffer chamber 16, and a lighting element is arranged above the cultivation tank 10, and the wave maker 50, the heating element and the lighting element are all connected to the controller. The wave maker 50 is used to make water waves to simulate sea waves in a natural seawater environment, and the lighting element is used to provide light, by placing the device in a dark environment and cooperating with the lighting element, the day and night changes can be simulated, and the heating element can control the water temperature and simulate the day and night temperature difference changes.

[0049] The first water inlet 11 is located at the first side of the cultivation tank 10, and the first water outlet 12 and the second water outlet 13 are located at the second side of the cultivation tank 10, the first side and the second side are opposite directions. In addition, the first water outlet 12 is higher than the second water outlet 13, and the second water outlet 13 is higher than or lower than the upper surface of the substrate 15. The seaweed cultivated when the second water outlet 13 is higher than the upper surface of the substrate 15 is different from the seaweed cultivated when the second water outlet 13 is lower than the upper surface of the substrate 15. Figure 1 and Figure 2 The second water outlet 13 is higher than the upper surface of the substrate 15.

[0050] The drainage control assembly includes a drainage pipe 61 and a drainage control valve 62. The first water outlet 12 is connected to the filtration 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 filtration area 33. The second water outlet 13 is connected to the drainage pipe 61 through the drainage control valve 62, and the drainage control valve 62 is an electric valve with adjustable opening degree, and the drainage control valve 62 is connected to the controller. In addition, a manual valve 63 can also be provided, and the second water outlet 13 is also connected to the drainage pipe 61 through the manual valve 63. By providing the manual valve 63, manual control can be performed when the drainage control valve 62 is damaged. Through the above setting, the recycling of the cultivation seawater can be constructed.

[0051] The application also discloses a seaweed cultivation method, which uses the seaweed cultivation device to cultivate seaweed: the seaweed is planted in the substrate 15 of the cultivation chamber 17, and the water inlet flow rate of the first water inlet 12 and the water outlet flow rate of the second water outlet 13 are adjusted by the controller to control the water pump 41 and the drainage control valve 62 respectively, so as to simulate the tidal growth environment and 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 rising tide period, a high tide period and a falling tide period.

[0052] The initial state: the controller starts the water pump 41, the first water inlet 11 supplies water to the cultivation tank 10, and 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 rising tide period.

[0053] 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, 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 or the falling tide period.

[0054] The 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, the water level in the cultivation tank 10 is kept at the position of the second water outlet 13, and the time T1 is maintained; after the maintenance time reaches T1, the rising tide period is entered.

[0055] One of the specific control methods of the low tide period is that the controller turns off the water pump 41 and the drain control valve 62, so that the water inflow rate of the first water inlet 11 and the water outflow rate of the second water outlet 13 are both 0, at this time the water level in the cultivation tank 10 can be kept low, the advantage is to avoid control, the disadvantage is that the water does not flow.

[0056] The second specific control method of the low tide period is that the controller starts the water pump 41 and the drain control valve 62, so that the water inflow rate of the first water inlet 11 and the water outflow rate of the second water outlet are both greater than 0 and equal, the water level is maintained by keeping the water inflow and outflow rates consistent, so that the water in the cultivation tank 10 can flow.

[0057] Rising tide period: the controller controls the water pump 41 and the drain control valve 62, so that the water inflow rate of the first water inlet 11 is greater than the water outflow 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.

[0058] One of the specific control methods of the rising tide period is that the controller starts the water pump 41 and closes the drain control valve 62, so that the water inflow rate of the first water inlet 11 is greater than 0 and the water outflow rate of the second water outlet is 0, which is simple and easy to control and more stable, and the rising tide time can be controlled by controlling the water inflow rate of the first water inlet 11.

[0059] The second specific control method of the rising tide period is that the controller starts the water pump 41 and the drain control valve 62, so that the water inflow rate of the first water inlet 11 and the water outflow rate of the second water outlet 13 are both greater than 0, and the water inflow rate of the first water inlet 11 is greater than the water outflow rate of the second water outlet 13, so that the water level is raised by controlling the difference between the water inflow and outflow rates, and the seawater in the cultivation tank 10 flows more strongly, in this mode, the rising tide time is controlled by controlling the water inflow rate of the first water inlet 11 and the water outflow rate of the second water outlet 13.

[0060] High tide period: the controller controls the water pump 41 and the drain control valve 62, so that the water inflow rate of the first water inlet 11 is equal to the sum of the water outflow rates of the first water outlet 12 and the second water outlet 13, and the water level in the cultivation tank 10 is kept at the position of the first water outlet 12 for a time T2, and after the maintenance time reaches T2, it enters the ebb tide period.

[0061] One of the specific control methods of the high tide period is that the controller turns off the water pump 41 and the drain control valve 62, so that the water inflow rate of the first water inlet 11 and the water outflow rate of the second water outlet are both 0, which is simple to control, and the disadvantage is that the water does not flow. The second specific control method of the high tide period is that the controller starts the water pump 41 and closes the drain control valve 62, so that the water inflow rate of the first water inlet 11 is greater than 0 and equal to the water outflow rate of the first water outlet 12, and the water outflow rate of the second water outlet 13 is 0, which can ensure the flowability of the water in the cultivation tank 10.

[0062] As the third specific control mode of the climax period, the controller starts the water pump 41 and the drain control valve 62, the water inflow rate of the first water inlet 11 is greater than 0, the water outflow rate of the second water outlet 13 is greater than 0, and the water inflow rate of the first water inlet 11 is equal to the sum of the water outflow rates of the first water outlet 12 and the second water outlet 13. In this way, the water bodies at high and low positions in the cultivation tank 10 can be well circulated.

[0063] Ebb period: the controller controls the water pump 41 and the drain control valve 62, so that the water inflow rate of the first water inlet 11 is less than the sum of the water outflow rates of the first water outlet 12 and the second water outlet 13, and the water level in the cultivation tank 10 gradually decreases to the position of the second water outlet 13, and then enters the low tide period.

[0064] The first specific control mode of the ebb period is that the controller closes the water pump 41 and starts the drain control valve 62, the water inflow rate of the first water inlet 11 is 0, and the water outflow rate of the second water outlet is greater than 0. In this way, the ebb period is fast, the control is more stable, and the disadvantage is that there is no water inflow. In this state, only the water outflow rate of the second water outlet 13 needs to be controlled to control the ebb time.

[0065] The second specific control mode of the ebb period is that the controller starts the water pump 41 and the drain control valve 62, the water inflow rate of the first water inlet 11 and the water outflow rate of the second water outlet 13 are both greater than 0, and the water inflow rate of the first water inlet 11 is less than the water outflow rate of the second water outlet 13. In this way, the water in the cultivation tank 10 can flow. In this state, the ebb time is controlled by controlling the water inflow rate of the first water inlet 11 and the water outflow rate of the second water outlet 13.

[0066] In addition, during the cultivation of seaweed, if the seawater concentration introduced by the first water inlet 11 is greater than the seawater concentration required for cultivation, the controller starts the water inlet valve to introduce fresh water from the second water inlet 1a to the cultivation chamber. In this way, the seawater concentration in the cultivation tank can be adjusted to ensure the normal growth of seaweed and can also be well adapted to cultivate different types of seaweed.

[0067] The key of the present application is that seawater is pumped into the cultivation tank 10 by the water pumping assembly, the water pump 41 and the drain control valve 62 are controlled by the controller, thereby the inflow and outflow flow rates of the cultivation tank 10 are controlled, different inflow and outflow flow rates are matched, thereby the natural tide is simulated, for example, when the cultivation tank 10 is in a low water level state, the inflow flow rate is greater than the outflow flow rate, at this time, the water level in the cultivation tank 10 rises, that is, the rising tide state is simulated, and when the cultivation tank 10 is in a high water level state, the inflow flow rate is less than the outflow flow rate, at this time, the water level in the cultivation tank 10 falls, that is, the ebb tide state is simulated. By simulating the natural tide, the cultivation environment of the seaweed tends to the original environment. In addition, by setting the substrate to cultivate the seaweed, the planting environment of the seaweed can be closer to the natural state, which is beneficial to the growth of the seaweed. The seaweed cultivated by the present application is closer to the seaweed grown in the natural environment, so when the seaweed obtained by the present application is used for scientific research, more accurate research data can be provided, thereby providing more accurate data support for the related research of the seaweed bed.

[0068] The above is only an embodiment of the present application, and does not limit the technical scope of the present application in any way, so any slight modification, equivalent change and modification of the above embodiment according to the technical essence of the present application still belongs to the scope of the technical solution of the present application.

Claims

1. A seaweed cultivation device, characterized by, The application relates to a seaweed cultivation device. The seaweed cultivation device comprises a cultivation tank, a pump water assembly, a water drainage control assembly and a controller. 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. The cultivation chamber is located at the bottom of the cultivation tank and is provided with a substrate. The first water inlet is located at a first side of the cultivation tank and is used for introducing 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 for draining seawater in the cultivation tank. The first side and the second side are opposite to each other. The first water outlet is higher than the second water outlet.

2. The seaweed cultivation device according to claim 1, characterized in that: The pump water assembly comprises a water pump and a water inlet pipe.

3. The seaweed cultivation device according to claim 1, characterized in that: The water inlet pipe is communicated with the first water inlet.

4. The seaweed cultivation device according to claim 1, characterized by: The water pump is arranged on the water inlet pipe.

5. A method for cultivating seaweed, characterized by: The water drainage control assembly comprises a water drainage pipe and a water drainage control valve. The first water outlet is communicated with the water drainage pipe. The second water outlet is communicated with the water drainage pipe through the water drainage control valve. The controller is connected with the water pump and the water drainage control valve. The controller is used for adjusting the water inflow rate of the first water inlet and the water outflow rate of the second water outlet respectively. The bottom of the cultivation tank is provided with a partition plate. The partition plate divides the inner cavity of the cultivation tank into a buffer chamber and the cultivation chamber. The first water inlet is located in the buffer chamber. The cultivation chamber is provided with at least one cultivation module. The substrate is arranged in the cultivation module. The substrates in different cultivation modules are the same or different. The second water outlet is higher than or lower than the upper surface of the substrate. The seaweed cultivation device further comprises a filter container. The filter container is provided with a filter area and a clean water area. The water inlet pipe is communicated with the clean water area of the filter container. The water drainage pipe is communicated with the filter area of the filter container. The seaweed cultivation device further comprises a placing rack. The filter container is arranged at the lower layer of the placing rack. The cultivation tank is arranged at the upper layer of the placing rack. The opening of the first water inlet is arranged downward. The bottom of the buffer chamber is further provided with an emptying pipe. The emptying pipe is provided with an emptying valve. The cultivation tank is provided with a wave maker. The wave maker is connected with the controller. The cultivation tank is provided with a heating element. The upper portion of the cultivation tank is provided with an illuminating element. The heating element and the illuminating element are connected with the controller. The water drainage control assembly further comprises a manual valve. The second water outlet is further communicated with the water drainage pipe through the manual valve. The cultivation tank is further provided with a second water inlet for introducing fresh water. The second water inlet is provided with a water inlet valve. The water inlet valve is connected with the controller. The method for cultivating seaweed is carried out by using the seaweed cultivation device. The seaweed is planted in the substrate in the cultivation chamber. The water inflow rate of the first water inlet and the water outflow rate of the second water outlet are adjusted by the controller. The seaweed is cultivated by simulating the tidal growth environment. The seaweed cultivation process comprises an initial state and a tidal state. The tidal state comprises a low tide period, a rising tide period, a high tide period and a falling tide period. In the initial state, the controller starts the water pump. The first water inlet supplies water into the cultivation tank. The water level in the cultivation tank gradually rises to the position of the second water outlet. Then the process enters the low tide period or the rising tide period. Alternatively, the controller starts the water pump and closes the water drainage control valve. The first water inlet supplies water into the cultivation tank. The water level in the cultivation tank gradually rises to the position of the first water outlet. Then the process enters the high tide period or the falling tide period. Low tide period: the controller controls the water pump and the drain control valve to make the water inflow rate of the first water inlet equal to the water outflow rate of the second water outlet, and the water level in the cultivation tank is kept at the position of the second water outlet for a time T1; after the time T1, the ebb period is entered; Rising tide period: the controller controls the water pump and the drain control valve to make the water inflow rate of the first water inlet greater than the water outflow rate of the second water outlet, and the water level in the cultivation tank gradually rises to the position of the first water outlet, and then the high tide period is entered; High tide period: the controller controls the water pump and the drain control valve to make the water inflow rate of the first water inlet equal to the sum of the water outflow rates of the first water outlet and the second water outlet, and the water level in the cultivation tank is kept at the position of the first water outlet for a time T2; after the time T2, the ebb period is entered; Ebb period: the controller controls the water pump and the drain control valve to make the water inflow rate of the first water inlet less than the sum of the water outflow rates of the first water outlet and the second water outlet, and the water level in the cultivation tank gradually drops to the position of the second water outlet, and then the low tide period is entered.

6. The seaweed cultivation method according to claim 5, characterized in that: the low tide period: the controller turns off the water pump and the drain control valve to make the water inflow rate of the first water inlet and the water outflow rate of the second water outlet both 0; or the controller starts the water pump and the drain control valve to make the water inflow rate of the first water inlet and the water outflow rate of the second water outlet both greater than 0 and equal; the rising tide period: the controller starts the water pump and turns off the drain control valve, the water inflow rate of the first water inlet is greater than 0, and the water outflow rate of the second water outlet is 0; or the controller starts the water pump and the drain control valve, and the water inflow rate of the first water inlet and the water outflow rate of the second water outlet are both greater than 0, and the water inflow rate of the first water inlet is greater than the water outflow rate of the second water outlet; the high tide period: the controller turns off the water pump and the drain control valve to make the water inflow rate of the first water inlet and the water outflow rate of the second water outlet both 0; or the controller starts the water pump and turns off the drain control valve to make the water inflow rate of the first water inlet greater than 0 and equal to the water outflow rate of the first water outlet, and the water outflow rate of the second water outlet is 0; or the controller starts the water pump and the drain control valve to make the water inflow rate of the first water inlet greater than 0, the water outflow rate of the second water outlet greater than 0, and the water inflow rate of the first water inlet equal to the sum of the water outflow rates of the first water outlet and the second water outlet; the ebb period: the controller turns off the water pump and starts the drain control valve to make the water inflow rate of the first water inlet 0 and the water outflow rate of the second water outlet greater than 0; or the controller starts the water pump and the drain control valve to make the water inflow rate of the first water inlet and the water outflow rate of the second water outlet both greater than 0, and the water inflow rate of the first water inlet less than the water outflow rate of the second water outlet.

7. The method of claim 5, wherein: During the cultivation of seaweed, if the seawater concentration introduced by the first water inlet is greater than the seawater concentration required for cultivation, the controller starts the water inlet valve to introduce fresh water from the second water inlet to the cultivation chamber.

Images