Floating plant cultivation device with fermentation tank

Abstract

The utility model provides a floating plant cultivation device with a fermentation tank. The floating plant cultivation device comprises the fermentation tank; the sealing cover is arranged on the fermentation tank in a covering manner; the breeding assembly is located in a sealed space defined by the fermentation tank and the sealing cover, and the breeding assembly is communicated with the sealed space; wherein one part of the fermentation tank and the breeding assembly are overlapped with each other in the height direction; and the other part of the fermentation tank is staggered from the breeding assembly in the height direction and is communicated with the sealed space. In conclusion, the fermentation tank generates carbon dioxide required by the growth of floating plants such as the duckweed and oxygen required by the fermentation of the fermentation tank during the growth of the duckweed, so that internal circulation of gas in the breeding device is realized, and matched culture measures are established in the growth process of the duckweed so as to ensure the growth conditions such as breeding water, temperature and carbon source required by the duckweed; the effective growth of the duckweed is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of plant cultivation, concretely relates to a floating plant cultivation device with fermentation pool. BACKGROUND

[0002] The floating plant is a kind of aquatic plant, taking the example of the very rapid growth duckweed, duckweed not only has higher protein content but also is rich in a variety of essential amino acids for human, and efficient production duckweed has extensive ecological, economic and social value, especially can provide sustainable efficient protein source.Therefore, with duckweed playing more and more important role, the research of relevant culture and harvesting device becomes very necessary.

[0003] But the growth environment of duckweed is harsh, such as the temperature range suitable for the growth of duckweed is narrow, generally between 20 DEG C to 30 DEG C, and too low or too high temperature can limit its growth, and duckweed growth needs sufficient carbon source and suitable water PH value.

[0004] In the growth process of duckweed, matching culture measures are established to ensure that duckweed needs light, temperature, water, gas and fertilizer, especially the control research of temperature becomes very important. INVENTION CONTENTS

[0005] The utility model is just to solve the above-mentioned technical problem, and its purpose is to provide a floating plant cultivation device with fermentation pool, which can establish the objective conditions matching the light, temperature, water, gas and fertilizer required for the growth of duckweed and other floating plants.

[0006] The utility model discloses a floating plant cultivation device with fermentation pool, which comprises a fermentation pool, a sealing cover covering the fermentation pool, a cultivation assembly in the sealing space formed by the fermentation pool and the sealing cover, and the cultivation assembly is communicated with the sealing space, wherein a part of the fermentation pool and the cultivation assembly are stacked along the height direction, and another part of the fermentation pool is staggered with the cultivation assembly along the height direction and is communicated with the sealing space.

[0007] Optionally, it further comprises a gas guide pipe for communicating the fermentation pool.

[0008] Optionally, the gas guide pipe is provided with a control valve.

[0009] Optionally, the middle part of the fermentation pool and the cultivation assembly are stacked along the height direction, and the two side parts of the fermentation pool and the cultivation assembly are staggered along the height direction.

[0010] Optionally, the sealing cover is a light-transmitting isolation film.

[0011] Optionally, the bottom of the cultivation assembly is covered by an isolation layer, the isolation layer separates the inner cavity of the cultivation assembly and the fermentation tank.

[0012] Optionally, the isolation layer is a waterproof film, and the inner circumferential wall of the cultivation assembly is attached with the isolation layer.

[0013] Optionally, the cultivation assembly comprises: an enclosure member for enclosing an inner cavity of the cultivation assembly; a gate for separating the inner cavity into a cultivation tank and a backwater tank; a collection net arranged in the backwater tank, a region between the collection net and the bottom of the backwater tank being a backwater cavity, and a collection area being on a side of the collection net away from the backwater cavity; wherein the isolation layer is located between the backwater cavity and the fermentation tank, and between the cultivation tank and the fermentation tank; the gate can be lowered to connect the collection area with the cultivation tank, and can be raised to separate the collection area from the cultivation tank.

[0014] Optionally, the cultivation assembly further comprises a retention plate arranged in the cultivation tank, and an extension direction of the retention plate is different from a direction in which the cultivation tank and the backwater tank are arranged in sequence.

[0015] Optionally, the cultivation assembly further comprises a backwater pipeline and a circulating pump arranged on the backwater pipeline, and the backwater pipeline respectively connects the backwater cavity and the cultivation tank.

[0016] The beneficial effects of the present application are as follows:

[0017] The utility model discloses a floating plant cultivation device with fermentation tank, include: fermentation tank, cover the sealing cover of fermentation tank, in the cultivation assembly in the sealing space that the fermentation tank and the sealing cover enclose, the cultivation assembly communicates the sealing space, wherein, the fermentation tank part and the cultivation assembly along the height direction each other superposition, the other part of the fermentation tank along the height direction each other staggered cultivation assembly, and communicate the sealing space.

[0018] In the cultivation process, the fermentation tank utilizes the heat and carbon dioxide generated in the aerobic or facultative anaerobic fermentation process, wherein the heat generated in the fermentation tank can be continuously conducted to the cultivation assembly to ensure that the water temperature of the cultivation water in the cultivation assembly is controlled within a suitable range, and the fermentation gas containing high-concentration carbon dioxide generated in the fermentation tank can also be transported to the cultivation assembly through the sealing space to provide a carbon source for the growth of duckweed in the cultivation assembly, and the oxygen generated during the growth of duckweed can be conducted to the fermentation tank through the sealing space to ensure the aerobic conditions required for normal fermentation of the fermentation tank.

[0019] In summary, the fermentation tank produces carbon dioxide required for the growth of floating plants such as duckweed, and the growth of duckweed produces oxygen required for fermentation of the fermentation tank, thereby realizing internal circulation of gas in the cultivation device, and further establishing matched cultivation measures in the growth process of duckweed to ensure the growth conditions such as cultivation water, temperature, carbon source required by duckweed, and realizing effective growth of duckweed. BRIEF DESCRIPTION OF DRAWINGS

[0020] The above features and advantages of the present application can be better understood by reading the following detailed description of embodiments of the present application in conjunction with the drawings, in which the components are not necessarily drawn to scale and components of similar or identical function or structure can have the same or similar reference numbers.

[0021] Figure 1 is a whole structure diagram of the present application;

[0022] Figure 2 is a structure diagram of a cultivation assembly of the present application;

[0023] Figure 3 is a structure diagram of a retention plate of the present application;

[0024] Figure 4 is a structure diagram of another retention plate of the present application;

[0025] Figure 5 is a structure diagram of a collection net of the present application.

[0026] BRIEF DESCRIPTION OF DRAWINGS

[0027] 100-fermentation tank,

[0028] 110-air guide pipe, 120-control valve, 130-blower,

[0029] 200-sealing cover,

[0030] 300-sealing space,

[0031] 400-cultivation assembly,

[0032] 410-enclosure component,

[0033] 420-cultivation tank,

[0034] 430-backwater tank, 431-backwater cavity, 432-collection area,

[0035] 440-gate, 441-buffer plate,

[0036] 450-collection net, 451-filter screen, 452-enclosure,

[0037] 460-retention plate,

[0038] 461 - holding tank, 462 - connection, 463 - stop unit, 464 - fixing device, 465 - upright, 466 - longitudinal beam,

[0039] 470 - return conduit,

[0040] 480 - circulation pump,

[0041] 500 - isolation layer. DETAILED DESCRIPTION

[0042] The utility model will be further described below in combination with specific embodiments and drawings, and more details are set forth in the following description so as to fully understand the utility model, but the utility model can obviously be implemented in many other ways different from the description, and those skilled in the art can make similar generalization and deduction according to actual application without departing from the connotation of the utility model, therefore the protection scope of the utility model should not be limited by the content of the specific embodiments.

[0043] It should be noted that these and other subsequent drawings are only as examples, and are not drawn in accordance with the condition of the same scale, and should not be used as the restriction of the protection scope actually required by the utility model.

[0044] Floating plants are a kind of aquatic plants, taking the example of duckweed, which is a kind of aquatic plants growing very rapidly, not only has higher protein content but also rich in various essential amino acids for human, and efficient production of duckweed has extensive ecological, economic and social value, especially can provide sustainable efficient protein source. Therefore, with duckweed playing an increasingly important role, the research of related culture and harvesting device becomes very necessary. However, the growth environment of duckweed is relatively harsh, such as the temperature range suitable for the growth of duckweed is relatively narrow, generally between 20 DEG C to 30 DEG C, and too low or too high temperature will limit its growth, and the growth of duckweed needs sufficient carbon source and suitable water PH value. Therefore, in the growth process of duckweed, it is very important to establish matching culture measures to ensure the light, temperature, water, air and fertilizer required by duckweed, especially the temperature control research becomes very important, and therefore the technical scheme of the present application is generated, which is described below in combination with Figures 1-5 .

[0045] The application provides a floating plant cultivation device with a fermentation tank. The floating plant can be duckweed, and the subsequent embodiments are all exemplified by duckweed. The cultivation device comprises a fermentation tank 100, a sealing cover 200, and a cultivation assembly 400. The fermentation tank 100 is a microbial fermentation tank containing a mixture of straw, aerobic bacteria, and water, and can produce fermentation gas mainly composed of carbon dioxide during fermentation. The sealing cover 200 is arranged on the fermentation tank 100, and the fermentation tank 100 and the sealing cover 200 form a sealed space 300. The cultivation assembly 400 is used for cultivating duckweed, and the cultivation assembly 400 is arranged in the sealed space 300.

[0046] Part of the fermentation tank 100 and the cultivation assembly 400 are stacked along the height direction; another part of the fermentation tank 100 is staggered with the cultivation assembly 400 along the height direction, and the fermentation tank 100 and the cultivation assembly 400 are both connected to the sealed space 300.

[0047] During cultivation, the fermentation tank 100 generates heat and carbon dioxide through aerobic or facultative fermentation, the heat generated by the fermentation tank 100 can be continuously conducted to the cultivation assembly 400 to ensure that the water temperature of the cultivation water in the cultivation assembly 400 is controlled within a suitable range, the fermentation gas containing high-concentration carbon dioxide generated in the fermentation tank 100 can be delivered to the cultivation assembly 400 through the sealed space 300 to provide a carbon source for the growth of duckweed in the cultivation assembly 400, and the oxygen generated during the growth of duckweed can be conducted to the fermentation tank 100 through the sealed space 300 to ensure the aerobic conditions required for normal fermentation of the fermentation tank 100.

[0048] In summary, the fermentation tank 100 generates carbon dioxide required for the growth of duckweed, and the growth of duckweed generates oxygen required for the fermentation of the fermentation tank 100, thereby realizing the internal circulation of gas in the cultivation device, and further establishing a matching cultivation measure in the growth process of duckweed to ensure the growth conditions of duckweed such as cultivation water, temperature, and carbon source, and realizing the effective growth of duckweed.

[0049] Optionally, the cultivation device further comprises a gas guide pipe 110 for connecting the fermentation tank 100, and the gas guide pipe 110 is used for connecting an external gas source. In the initial use, air is introduced into the fermentation tank 100 through the gas guide pipe 110 to provide a stable and continuous oxygen source for the microbial colonies in the fermentation tank 100; after the fermentation tank 100 is fermented for a certain period of time to generate carbon dioxide with a certain concentration required for the growth of duckweed, the air supply is stopped, and the ecological environment required for the growth of duckweed and microorganisms is formed by the internal circulation of the cultivation device.

[0050] Optionally, the air duct 110 is connected with the air blower 130 and the fermentation tank 100 respectively, so that the air blower 130 and the like can be used as power to make the outside air enter the fermentation tank 100, thereby reducing labor and saving energy.

[0051] Optionally, the air duct 110 is provided with a control valve 120, which can be a switch valve or a one-way valve and the like, and when opened, the control valve 120 can provide oxygen to the fermentation tank 100, and when closed, the control valve 120 can prevent the gas in the fermentation tank 100 from overflowing, thereby ensuring the internal circulation of the gas in the breeding device to ensure the stable internal environment required for the growth of duckweed and microorganisms.

[0052] Optionally, the breeding assembly 400 is arranged at the middle position of the sealed space 300. The middle part of the fermentation tank 100 and the breeding assembly 400 are stacked in the height direction and the contact part is used for heat conduction; the two side parts of the fermentation tank 100 and the breeding assembly 400 are staggered in the height direction, and the oxygen generated by the fermentation tank 100 is conducted to the breeding assembly 400 through the two sides, and the carbon dioxide generated by the duckweed in the breeding assembly 400 enters the fermentation tank 100 through the two sides of the fermentation tank 100, so as to meet the growth needs of the microorganisms in the fermentation tank 100.

[0053] Optionally, the sealed cover 200 is a light-transmitting isolation film, and the sealed cover 200 is made of a high-transmittance material, which can effectively prevent the breeding assembly 400 from interacting with the outside world while not affecting the duckweed from receiving sunlight, thereby increasing the stability of the growth of the duckweed.

[0054] Optionally, the bottom of the breeding assembly 400 is covered with an isolation layer 500, and the isolation layer 500 separates the inner cavity of the breeding assembly 400 and the fermentation tank 100, so that the heat conduction is more effective.

[0055] Optionally, the inner circumferential wall of the breeding assembly 400 is attached with an isolation layer 500, and the isolation layer 500 is a waterproof film, such as a common plastic breeding film, so as to improve the waterproof performance of the breeding assembly 400 and prevent the breeding water in the breeding assembly 400 from leaking out.

[0056] Optionally, the breeding assembly 400 comprises a surrounding member 410, a gate 440 and a collection net 450. The surrounding member 410 surrounds the inner cavity of the breeding assembly 400, and the surrounding member 410 is made of a material structure having a certain supporting and heat-insulating effect, such as a heat-insulating brick structure, a heat-insulating plate structure, or even a rammed soil structure; the surrounding member 410 determines the size of the duckweed production unit, thereby increasing the expandability and extensibility of the device.

[0057] The gate 440 is arranged in the inner cavity, and the gate 440 divides the inner cavity into the culture pond 420 and the backwater pond 430, and the culture pond 420 and the backwater pond 430 are sequentially arranged along the length direction of the culture device. The culture pond 420 is used for containing the culture water body, and the culture water body is the culture water body which is prepared with certain nutrient solution and is suitable for the culture of duckweed; the gate 440 functions as a water gate and is a control end for the opening and harvesting of duckweed, and the water flow of the culture pond 420 changes with the opening degree of the gate 440.

[0058] The backwater pond 430 is provided with the collection net 450, the height of the water surface of the culture pond 420 is higher than the height of the collection net 450, the area between the collection net 450 and the bottom of the backwater pond 430 is the backwater cavity 432, and the side, away from the backwater cavity 432, of the collection net 450 is the collection area 431; the backwater cavity 432 is used for recycling the culture water body of duckweed, and the collection area 431 is used for collecting duckweed.

[0059] When the duckweed is not collected, the gate 440 can be lifted to be closed, so as to separate the collection area 431 and the culture pond 420, so that the duckweed is cultivated and grown in the culture pond 420; when the duckweed is cultivated to a certain degree, the gate 440 can be lowered, so that the collection area 431 is communicated with the culture pond 420, at this time, the culture pond 420 and the backwater pond 430 form a liquid level difference, so that the duckweed in the culture pond 420 flows to the side of the collection area 431 with the culture water body, the culture water body flows into the backwater cavity 432 through the collection area 431, and the duckweed is screened by the collection net 450 and is left in the collection area 431.

[0060] In summary, the device of the utility model is used for collecting duckweed, compared with the collection mode in the related art, the collection efficiency is improved, the collection cost is reduced, the duckweed culture environment is not damaged, the cost is reduced and the efficiency is increased, and the service life of the culture device is ensured.

[0061] Optionally, the collection net 450 comprises the filter screen 451 and the fence 452 arranged along the edge of the filter screen 451, and the fence 452 and the filter screen 451 enclose a duckweed collection groove. When the duckweed in the culture pond 420 falls into the duckweed collection groove, the duckweed is collected and summarized.

[0062] Optionally, for the setting of the collection net 450, the collection net 450 can cover the water outlet of the backwater pond 430, and the height of the position of the collection net 450 is less than the initial liquid level height of the culture water body in the culture pond 420, so that the collection area 431 is an open area, so as to collect the duckweed when the gate 440 is opened, and the utility model adopts the following mode:

[0063] The aquaculture device is configured as a rectangular container, with a gate 440 acting as a partition to separate the return water pool 430 and the aquaculture pool 420. The water outlets of the return water pool 430 and the aquaculture pool 420 are flush. A collection net 450 is installed inside the return water pool 430. The collection area 431 is a cavity enclosed by the gate 440, the collection net 450, and the enclosure member 410. The water outlet of the return water pool 430 serves as the collection port of the collection area 431. This configuration limits the containment space of the collection area 431 to surround and stop the collected duckweed, preventing it from falling outside the collection area 431.

[0064] Optionally, such as Figure 3 As shown, the aquaculture device also includes a retention plate 460 installed in the aquaculture pond 420. The extension direction of the retention plate 460 is different from the direction in which the aquaculture pond 420 and the return water pond 430 are sequentially arranged. For example, the retention plate 460 extends laterally, with its extension direction being the width direction of the aquaculture device, while the aquaculture pond 420 and the return water pond 430 are sequentially arranged along the length direction of the aquaculture device. In this way, during the duckweed collection process, the retention plate 460 will block and retain some duckweed in the aquaculture pond 420 until the duckweed in other parts of the water surface has basically flowed to the collection net 450. This ensures that there is always duckweed on the aquaculture water, achieving the optimal balance between duckweed collection and retention. This keeps the duckweed in a state of rapid growth, realizing efficient duckweed growth and high resource utilization, greatly reducing labor costs, improving the utilization efficiency of water surface space, and effectively filling the gaps in many aspects such as weak intelligence, poor scalability and extensibility, and insufficient cost-effectiveness.

[0065] Optionally, a retention trough 461 is provided on the side of the retention plate 460 away from the collection area 431. As the duckweed flows with the aquaculture water towards the collection area 431, the retention plate 460 more effectively collects some of the duckweed in the retention trough 461 to preserve it for subsequent breeding.

[0066] Optionally, the retention plate 460 includes a connector 462 and a plurality of stop units 463, each stop unit 463 having a retention groove 461. The plurality of stop units 463 are arranged sequentially along the extension direction of the retention plate 460, forming a water flow channel between adjacent stop units 463, and are connected to each other by the connector 462. In this way, on the one hand, the distribution of the plurality of retention grooves 461 along the extension direction of the retention plate 460 allows the retained duckweed to be distributed at multiple points in the aquaculture pond 420, making it easier for the subsequently cultivated duckweed to grow. On the other hand, the water flow channel facilitates the flow of the aquaculture water, thus not affecting the flow of some duckweed to the collection area 431 for collection.

[0067] Optionally, the stop unit 463 is arranged as an arc-shaped baffle, and the storage groove 461 is an arc-shaped groove formed by a recessed area of the arc-shaped baffle, and such an arrangement can reduce the cross-sectional area of the storage plate 460, and avoid excessive extrusion of the storage plate 460 on the growth space of the duckweed in the culture pond 420.

[0068] Optionally, a plurality of storage plates 460 are arranged along the length direction of the culture device, so that the stored duckweed can be more uniformly distributed to various places of the culture water in the culture pond 420, and the subsequent cultivation of the duckweed is facilitated. Meanwhile, it should be noted that the number of the storage plates 460 and the number of the storage grooves 461 on the storage plates 460 are adjusted to adjust the density of the storage grooves 461 in the culture pond 420, and then the amount of the collected duckweed and the duckweed seedling rate can be controlled, the utilization rate of the water surface and sunlight is maximized, the idle time of the water surface is reduced, and the yield is maximized.

[0069] Optionally, the storage plate 460 is a transparent plate, so as not to hinder the irradiation of sunlight on the duckweed, and facilitate the growth of the duckweed.

[0070] Optionally, the storage plate 460 is arranged in a spaced manner with the cavity bottom of the inner cavity of the culture device, so as to reduce the stop of the storage plate 460 on the culture water, and the culture water can flow freely in the culture pond 420.

[0071] Optionally, the storage plate 460 spans the culture pond 420, and the storage plate 460 is connected with the two opposite surrounding members 410 of the culture assembly 400, and the two opposite surrounding members 410 are arranged in a relative manner along the width direction of the culture device, so as to ensure the connection stability of the storage plate 460, and on the other hand, the support force generated by the storage plate 460 can reinforce the culture pond 420.

[0072] Further, for the specific connection mode of the storage plate 460 and the surrounding member 410, the fixing device 464 can be arranged at both ends of the storage plate 460. The fixing device 464 is a clamping strip, and the surrounding member 410 is provided with a clamping groove for clamping the clamping strip, so that the storage plate 460 can be clamped into the surrounding member 410, and the storage plate 460 is fixed.

[0073] Figure 4 is another structure diagram of the storage plate of the utility model, and Figure 3The difference between the standing plate 460 is that the standing plate 460 can also adopt the fixing mode of the elastic rope. Specifically, the upper and lower two parts on both sides of the stop unit 463 are perforated, the connecting piece 462 is an elastic rope, and the elastic rope penetrates a plurality of stop units 463; the fixing device 464 is a fixed frame, one side of the fixed frame extends into the culture pond 420 to connect the elastic rope, and the other side of the fixed frame extends out of the culture pond 420 to be fixed in the soil, platform or other base for setting the culture assembly 400, or is fixed on the top surface of the enclosure member 410. The purpose of such setting is that the side of the enclosure member 410 facing the inner cavity is attached with the insulation layer 500 as a waterproof film. Compared with the mode of clamping and fixing the standing plate 460 on the enclosure member 410, the mode of hanging the standing plate 460 by the elastic rope makes the standing plate 460 not contact the insulation layer 500, which on the one hand prevents the damage of the insulation layer 500 and the loss of the culture water, and on the other hand reduces the production cost.

[0074] Optionally, the standing column 465 and the longitudinal beam 466 are further included, the standing column 465 is arranged at the end of the connecting piece 462 of the elastic rope; the longitudinal beam 466 is arranged along the length direction of the culture pond 420; the longitudinal beam 466 is connected with the fixing device 464 and the standing column 465 respectively; the unit body composed of the connecting piece 462, the stop unit 463 and the standing column 465, and the fixing device 464 are arranged along the extension direction of the longitudinal beam 466. In this way, the number and specifications of the stop units 463 on the connecting piece 462, and the number of the unit body composed of the connecting piece 462, the stop unit 463 and the standing column 465 can be adjusted flexibly, so as to adjust the density of the stop units 463 in the culture pond 420, thereby optimizing the utilization rate of the water surface space and the nutrient distribution rate, and more effectively controlling the dynamic balance of the duckweed stock and the recovery amount, to achieve the best ecological benefit.

[0075] Optionally, the buffer plate 441 is arranged on the side of the gate 440 facing the backwater pool 430, the buffer plate 441 is arranged on the top of the gate 440, and the buffer plate 441 extends towards the collection net 450 to form an included angle between the gate 440 and the buffer plate 441. This is because the duckweed may be accumulated on the outside of the gate 440, so the buffer plate 441 is made of a material that is not easy to stick to the duckweed, and the duckweed falling points are dispersed.

[0076] Optionally, the cultivation device further comprises a backwater pipeline 470 and a circulating pump 480, the backwater pipeline 470 is connected to the backwater cavity 432 and the cultivation pool 420 respectively, and the circulating pump 480 is arranged in the backwater pipeline 470. The circulating pump 480 can be a propellerless circulating pump or a magnetic fluid pump. When collecting the duckweed, the gate 440 is opened and the circulating pump 480 is started. At this time, the cultivation water in the backwater cavity 432 is pumped into the cultivation pool 420. On the one hand, the circulation and reciprocation power is generated, and the gravity generated by the liquid level difference between the cultivation pool 420 and the backwater pool 430 can continuously flush the duckweed to the collection area 431 and enrich the duckweed in the collection net 450. On the other hand, the resource utilization rate of the cultivation water can be improved.

[0077] Optionally, the height of the backwater pipeline 470 at the position connected to the backwater cavity 432 is lower than the height of the backwater pipeline 470 at the position connected to the cultivation pool 420. The backwater pipeline 470 does not extend into the cultivation water in the cultivation pool 420 to avoid direct contact with the cultivation water in the cultivation pool 420. In this way, the circulating pump 480 can be used to pump the water from the low end of the backwater cavity 432 to the high end of the cultivation pool 420. On the one hand, the flow performance of the water can be further improved. On the other hand, mechanical damage to the duckweed can be avoided.

[0078] Optionally, the backwater pipeline 470 is provided with a plurality of water outlets on one side of the cultivation pool 420. The plurality of water outlets are arranged in sequence along the width direction of the cultivation device, and the cultivation water in the cultivation pool 420 flows towards the length direction of the cultivation device. In this way, the plurality of water outlets are arranged in a waterfall structure, and the water outlet side of the backwater pipeline 470 is subdivided into a plurality of branches. After the cultivation water pumped by the circulating pump 480 to the high end of the cultivation pool 420 is naturally subdivided, the water flow direction is stable and the water flow speed is slowed down, which helps the duckweed to flow orderly to the low end of the backwater pool 430.

[0079] Optionally, the collection net 450 is slidably arranged in the backwater pool 430 along the height direction. In this way, the fixed position of the collection net 450 can be adjusted according to the amount of duckweed collected at one time. This can prevent the collection net 450 from being blocked by too much duckweed, and can maintain a certain distance from the cultivation water in the backwater cavity 432 below, so as to effectively drain the water carried by the duckweed.

[0080] Optionally, the collection net 450 is detachably arranged in the backwater pool 430. After the collection net 450 collects sufficient duckweed, the collection net 450 can be detached and used as a carrier for transporting the duckweed.

[0081] The utility model discloses although the above-mentioned preferable embodiment is disclosed, but it is not used to limit the utility model, and any person skilled in the art can make possible change and modification without departing from the spirit and scope of the utility model. Therefore, all the modification, equivalent change and modification of the above-mentioned embodiment according to the technical essence of the utility model without departing from the technical scheme of the utility model all fall into the protection scope defined by the utility model claim.

Claims

1. A floating plant cultivation device with a fermentation tank, characterized in that, include: Fermentation tank (100); A sealing cover (200) is installed over the fermentation tank (100); Aquaculture component (400) located in the sealed space (300) formed by the fermentation tank (100) and the sealing cover (200). In this arrangement, a portion of the fermentation tank (100) is stacked on top of the aquaculture component (400) along the height direction, and another portion of the fermentation tank (100) is offset from the aquaculture component (400) along the height direction; both the aquaculture component (400) and the fermentation tank (100) are connected to the sealed space (300).

2. The aquaculture device according to claim 1, characterized in that, It also includes an air duct (110) for connecting the fermentation tank (100).

3. The aquaculture device according to claim 2, characterized in that, The air duct (110) is equipped with a control valve (120).

4. The aquaculture device according to claim 1, characterized in that, The middle part of the fermentation tank (100) is stacked on top of the aquaculture component (400) along the height direction, and the two sides of the fermentation tank (100) are offset from the aquaculture component (400) along the height direction.

5. The aquaculture device according to claim 1, characterized in that, The sealing cover (200) is a light-transmitting isolation film.

6. The aquaculture device according to claim 1, characterized in that, The bottom of the aquaculture component (400) is covered with an isolation layer (500), which separates the inner cavity of the aquaculture component (400) from the fermentation tank (100).

7. The aquaculture apparatus according to claim 6, characterized in that, The isolation layer (500) is a waterproof membrane, and the isolation layer (500) is attached to the inner peripheral wall of the aquaculture component (400).

8. The aquaculture apparatus according to claim 6, characterized in that, The aquaculture component (400) includes: Enclosing member (410) for enclosing the inner cavity of the aquaculture assembly (400); Gate (440) that divides the inner cavity into a breeding pool (420) and a return water pool (430); A collection net (450) is provided in the return water tank (430). The area between the collection net (450) and the bottom of the return water tank (430) is the return water chamber (431). The side of the collection net (450) away from the return water chamber (431) is the collection area (432). The isolation layer (500) is located between the return water chamber (431) and the fermentation tank (100), and between the aquaculture tank (420) and the fermentation tank (100); the gate (440) can be lowered to connect the collection area (432) to the aquaculture tank (420), and can be raised to separate the collection area (432) from the aquaculture tank (420).

9. The aquaculture apparatus according to claim 8, characterized in that, The aquaculture component (400) also includes a retaining plate (460) disposed in the aquaculture pond (420). The extension direction of the retention plate (460) is different from the direction in which the aquaculture pond (420) and the return water pond (430) are arranged in sequence.

10. The aquaculture apparatus according to claim 8, characterized in that, The aquaculture assembly (400) also includes a return water pipe (470) and a circulation pump (480) disposed on the return water pipe (470), the return water pipe (470) being connected to the return water chamber (431) and the aquaculture pond (420) respectively.

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