An apparatus for aquaculture

Abstract

This application relates to the field of aquaculture equipment technology and discloses an aquatic seedling raising device, including a U-shaped floating frame, a seedling raising platform, a U-shaped enclosure, and a limiting rod. The U-shaped enclosure forms a seedling raising space, and is equipped with an inlet, an outlet, and a seedling collection port. A seedling collection net is installed at the seedling collection port. The U-shaped enclosure contains mud and sand to simulate a riverbed, and a seedling collection filter wire mesh is provided at the bottom. A connection structure for adjusting the draft of the seedling raising platform is provided between the seedling raising platform and the U-shaped floating frame. This application can adapt to the deployment requirements of a flowing water environment in a river, facilitates the adjustment of the seedling raising space height, can form a stable flowing water seedling raising environment, and facilitates subsequent centralized seedling collection and protection management.

Description

Technical Field

[0001] This invention belongs to the field of aquaculture technology, specifically relating to an aquatic seedling raising device. Background Technology

[0002] In aquaculture, the seedling stage has a significant impact on the survival rate, growth status, and subsequent aquaculture outcomes of larvae. For some aquatic larvae that require cultivation in natural aquatic environments, current technologies typically combine seedling cultivation with rivers, ditches, or other flowing water bodies to utilize the fluidity, dissolved oxygen levels, and ecological environment of the natural water to meet the seedling cultivation requirements. Therefore, aquatic seedling cultivation equipment applied in such scenarios not only needs to adapt to the deployment requirements of flowing water environments but also needs to maintain a relatively stable operating state during the seedling cultivation period to complete larval cultivation and daily management.

[0003] However, existing aquatic seedling raising devices often suffer from insufficient overall adaptability when used in flowing water environments such as rivers. That is, after the devices are actually deployed, it is difficult to maintain a suitable seedling raising state under different water levels and flow conditions, which in turn affects the stability of the seedling raising process and the convenience of management. Summary of the Invention

[0004] In view of the problems existing in the prior art, the purpose of this invention is to provide an aquatic seedling raising device that can solve the above problems.

[0005] To achieve the above objectives, the present invention provides the following technical solution: An aquatic seedling raising device includes a spiral-shaped float that floats on the water surface, a seedling raising platform set inside the spiral-shaped float, a spiral-shaped enclosure set on the seedling raising platform, and a limiting rod for limiting the spiral-shaped float at the edge of the river channel. The inside of the U-shaped frame forms a seedling space, and the U-shaped frame is provided with a water inlet and a water outlet so that external fresh water can flow through the seedling space; The spiral-shaped frame is also provided with a seedling collection opening, and a seedling collection net is installed at the seedling collection opening; The inside of the U-shaped enclosure is set with mud and sand to simulate a riverbed, and the bottom of the U-shaped enclosure is set with a seedling filter wire mesh. A connecting structure for adjusting the draft of the seedling platform is provided between the seedling platform and the U-shaped floating frame.

[0006] Furthermore, one end of the spiral-shaped float is provided with a float lug, and a through hole is opened inside the float lug. The limiting rod passes through the through hole to fix the spiral-shaped float to the edge of the river channel.

[0007] Furthermore, the connection structure includes a rod holder fixed at the end of the seedling platform and a limiting hole opened on the U-shaped floating frame, wherein the rod holder is inserted into the corresponding limiting hole.

[0008] Furthermore, the insertion rod frame is evenly provided with multiple height adjustment holes, and bolts are installed through the insertion rod frame and the U-shaped floating frame to adjust and fix the water draft of the seedling platform by cooperating with the bolts and different height adjustment holes.

[0009] Furthermore, one end of the U-shaped frame is movably connected to the seedling platform via a pivot, and the other end is fixedly connected to the seedling platform via screws. A handle is installed on the other end of the U-shaped frame to lift the frame for collecting seedlings after the screws are removed.

[0010] Furthermore, the tail end of the seedling collection net is open, and the tail end of the seedling collection net is tied with a drawstring.

[0011] Furthermore, the simulated riverbed is located at both ends inside the U-shaped frame, and the simulated riverbed is trapezoidal when viewed from the side.

[0012] Furthermore, a filter screen is installed inside the water inlet, and the pore size of the filter screen is larger than the diameter of the algae; a filter cloth is installed inside the water outlet.

[0013] Furthermore, the top of the loop-shaped frame is covered with a protective net.

[0014] Compared with the prior art, the beneficial effects of the present invention are: Compared with existing technologies, this application constructs the seedling raising device in an overall layout that allows it to float on the water surface and be positioned along the edge of the river, enabling the device to directly adapt to use scenarios in flowing water environments such as rivers. The U-shaped floating frame provides a floating foundation, the limiting rods position the overall device at its edges, and the seedling platform and the U-shaped enclosure together form a stable seedling raising area. Through this solution, the device, after actual deployment, can effectively reduce positional shifts caused by water flow or environmental changes, thereby improving the deployment stability of the device in flowing water environments and solving the problem of insufficient overall adaptability and difficulty in maintaining stable seedling raising conditions in existing aquatic seedling raising devices in river environments.

[0015] Compared with existing technologies, this application allows external flowing water to continuously flow through the seedling space by setting inlet and outlet on the U-shaped frame, and by adding silt and sand inside the seedling space to simulate riverbeds and form seedling conditions that are more adapted to the natural river environment. The above scheme enables the device to not only utilize the natural flowing water environment when used in the river, but also to form a relatively reasonable water exchange state and seedling environment in the seedling area, thereby improving the adaptability of the seedling space to different flowing water conditions in the river, and thus helping to maintain the stability of the seedling process.

[0016] Compared with the prior art, this application provides an adjustable draft connection structure between the seedling platform and the U-shaped floating frame, allowing the seedling platform and the U-shaped frame to be adjusted in height according to the river water level and actual seedling needs. Through the above solution, the device can maintain a suitable working height under different water level conditions, avoiding the impact of mismatched deployment height on the flow of fresh water and the seedling status, thereby enhancing the device's adaptability to changes in the river environment and further improving the stability of the entire seedling process.

[0017] Compared with existing technologies, this application improves upon existing technologies by setting a seedling collection port and a seedling collection net on the U-shaped frame, and by enabling the U-shaped frame to be opened for seedling collection. This allows the device to directly collect seedlings after the seedling cultivation is completed. At the same time, a protective structure is set on the top of the U-shaped frame to provide overhead protection for the seedling cultivation space in an open river environment. Through the above solutions, the device maintains the state of live water seedling cultivation while also taking into account the convenience of subsequent management and seedling collection operations, thereby improving the problem of inconvenient management in river environments caused by existing technologies. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the spiral-shaped floating frame of the present invention; Figure 3 This is a three-dimensional structural diagram of the spiral-shaped floating frame of the present invention after its removal. Figure 4 This is a schematic diagram of the three-dimensional structure of the seedling platform after the removal of the spiral frame of the present invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the seedling platform of the present invention; Figure 6 This is a schematic diagram of the three-dimensional structure of the spiral-shaped frame of the present invention; Figure 7 This is a schematic diagram of the three-dimensional structure of the U-shaped frame after the seedling collection net bag of the present invention has been removed; Figure 8 This is a schematic diagram of the three-dimensional structure of the U-shaped frame after the seedling collection net bag of the present invention has been removed.

[0019] The attached diagram lists the components represented by each number as follows: 101. U-shaped float; 111. Float lug; 112. Limiting hole; 102. Seedling platform; 121. Insertion pole holder; 122. Height adjustment hole; 103. U-shaped frame; 131. Water inlet; 132. Water outlet; 133. Seedling collection filter wire mesh; 134. Seedling collection port; 135. Handle; 104. Seedling collection net bag; 105. Simulated riverbed with mud and sand; 106. Limiting insertion pole. Detailed Implementation

[0020] To make the objectives and advantages of this invention clearer, the invention will be specifically described below with reference to embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of the invention and does not strictly limit the scope of protection specifically claimed by the invention.

[0021] See Figure 1-8 A type of aquatic seedling raising device includes a spiral-shaped float 101 floating on the water surface, a seedling raising platform 102 set within the spiral-shaped float 101, a spiral-shaped enclosure 103 set on the seedling raising platform 102, and a limiting rod 106 for limiting the spiral-shaped float 101 to the edge of the river channel. Because existing aquatic seedling raising equipment often suffers from insufficient adaptability to the water surface environment when used in flowing water environments such as rivers, the seedling raising area struggles to maintain a suitable seedling raising state under the influence of water flow, water level fluctuations, and changes in riverbank positioning conditions, thus affecting the stability of the seedling raising process and the convenience of subsequent management. To address the problem of insufficient overall adaptability in flowing water environments, the spiral-shaped float 101... 1. The device is used to float on the surface of the river and provide an overall floating foundation. The seedling platform 102 is set inside the spiral-shaped float 101 and serves as the mounting and bearing part of the spiral-shaped enclosure 103. The spiral-shaped enclosure 103 is set on the seedling platform 102 and encloses the working area for accommodating the seedling water and the seedling objects. The limiting rod 106 is set between the spiral-shaped float 101 and the edge of the river and is used to limit and fix the spiral-shaped float 101. Thus, the spiral-shaped float 101, the seedling platform 102, the spiral-shaped enclosure 103 and the limiting rod 106 cooperate with each other, so that the device can be stably deployed at the edge of the river and provide basic conditions for subsequent live water flow seedling cultivation, seedling space maintenance and seedling harvesting operations.

[0022] The U-shaped enclosure 103 forms a seedling raising space. The U-shaped enclosure 103 is equipped with an inlet 131 and an outlet 132 to allow external flowing water to pass through the seedling raising space. Since river seedling raising requires not only utilizing the natural flowing water environment but also maintaining continuous water exchange within the seedling raising space, an unreasonable connection between the seedling raising space and the external river water can easily lead to insufficient water flow or unstable water exchange within the seedling raising space, thus affecting the environmental adaptation effect during aquaculture seedling raising. To improve the connection between the river's flowing water environment and the seedling raising space... The interconnectedness between the spaces is achieved by enclosing a seedling space with a U-shaped frame 103. An inlet 131 is located on the U-shaped frame 103 to introduce fresh water from the external river into the seedling space, and an outlet 132 is located on the U-shaped frame 103 to drain the water from the seedling space. This allows fresh water from the outside to enter the seedling space through the inlet 131 and then flow out through the outlet 132, thus forming a continuous flow path of fresh water within the area defined by the U-shaped frame 103. This enables the seedling space to better adapt to the fresh water environment of the river.

[0023] The U-shaped enclosure 103 is also equipped with a seedling collection port 134, and a seedling collection net 104 is installed at the seedling collection port 134. Since mature seedlings need to be collected from the seedling space after the aquatic seedlings are raised, if the seedling device lacks a clear collection outlet and a matching receiving structure, it is easy to cause the seedlings to be scattered, the collection process to be cumbersome, and the seedling collection process to be difficult to control, thereby affecting the subsequent management efficiency of seedling operations in the river environment. In order to facilitate centralized collection of seedlings after the seedlings are raised, the seedling collection port 134 is opened on the U-shaped enclosure 103 and serves as a channel for the collection and discharge of mature seedlings. The seedling collection net 104 is installed at the seedling collection port 134 and is used to receive and collect the mature seedlings flowing out of the seedling collection port 134, so that the seedlings cultivated inside the U-shaped enclosure 103 can gather towards the seedling collection port 134 and enter the seedling collection net 104 during the seedling collection stage, thereby improving the concentration and convenience of the seedling collection operation.

[0024] The inner part of the U-shaped enclosure 103 is equipped with a mud and sand simulated riverbed 105, and the bottom of the U-shaped enclosure 103 is equipped with a seedling collection and filtering wire mesh 133. Because some aquatic seedlings in the flowing water environment of the river have high requirements for attachment, residence, or activity environments close to natural riverbed conditions during the seedling cultivation process, if the seedling cultivation space lacks a bearing area adapted to the natural environment, it is easy to reduce the degree of simulation of the river ecological environment within the seedling cultivation space. Furthermore, during the subsequent seedling collection process, mud and sand may mix with mature seedlings. To improve the integration of the seedling cultivation space with the natural river environment... The environmental matching degree takes into account the subsequent seedling harvesting and separation needs. The mud and sand simulated river beach 105 is set inside the U-shaped enclosure 103 and is used to form a seedling area that is close to the state of a natural river beach in the seedling space. The seedling harvesting filter wire mesh 133 is set at the bottom of the U-shaped enclosure 103 and is used to filter and separate the mud and sand and mature seedlings in the mud and sand simulated river beach 105 during the seedling harvesting process. Thus, the mud and sand simulated river beach 105 and the seedling harvesting filter wire mesh 133 work together to provide a suitable simulated environment in the seedling stage and provide the necessary separation conditions in the seedling harvesting stage.

[0025] A connecting structure is provided between the seedling platform 102 and the U-shaped floating frame 101 to adjust the draft of the seedling platform 102. Due to differences in water level conditions, flow state, and seedling requirements in the river's flowing water environment, if the position of the seedling platform 102 relative to the U-shaped floating frame 101 cannot be adjusted, the height of the U-shaped enclosure 103 may be difficult to match with the actual water surface state, thus affecting the flow effect of the flowing water in the seedling space and the overall seedling state. In order to enable the device to adapt to the deployment requirements of different river environments, a connecting structure is provided between the seedling platform 102 and the U-shaped floating frame 101. The connecting structure is used to adjust the draft of the seedling platform 102, so that the seedling platform 102 can be at different height positions relative to the U-shaped floating frame 101, thereby driving the U-shaped enclosure 103 set on the seedling platform 102 to adjust its working height synchronously to meet the adjustment requirements of the seedling space deployment state in the flowing water environment of the river.

[0026] See Figure 1 One end of the spiral-shaped float 101 is provided with a float lug 111, and a through hole is opened inside the float lug 111. The limiting rod 106 passes through the through hole to fix the spiral-shaped float 101 to the edge of the river. Since the spiral-shaped float 101 is easily pushed by the water flow when floating on the river surface, it is prone to lateral displacement or drifting along the river direction. If there is no reliable limiting fit between the spiral-shaped float 101 and the edge of the river, the location of the seedling space is difficult to maintain stability for a long time, which will affect the deployment effect of the entire aquaculture seedling device at the edge of the river. To ensure that the spiral-shaped float 101 can be stably positioned at the edge of the river, a float lug 111 is set at one end of the spiral-shaped float 101 and serves as a limiting connection part. The through hole inside the float lug 111 is used for the limiting rod 106 to pass through. After the limiting rod 106 passes through the through hole, it forms a matching limiting with the edge of the river, so that the spiral-shaped float 101 can complete the fixed connection with the edge of the river with the help of the float lug 111, the through hole and the limiting rod 106, thereby reducing the drift amplitude of the spiral-shaped float 101 in the flowing water environment of the river.

[0027] See Figure 1-2The connection structure includes a rod holder 121 fixed at the end of the seedling platform 102 and a limiting hole 112 opened on the U-shaped float 101. The rod holder 121 is inserted into the corresponding limiting hole 112. Since the seedling platform 102 not only needs to be set inside the U-shaped float 101, but also needs to have adjustable assembly conditions while ensuring stable connection, if the seedling platform 102 and the U-shaped float 101 are only connected by a fixed method, the layout height of the seedling platform 102 is difficult to adjust according to the river water level environment, thus affecting the seedling space. The system is adaptable to the flowing water environment of the river. To balance connection stability and subsequent height adjustment requirements, the insertion rod bracket 121 is fixed at the end of the seedling platform 102 and serves as a downward insertion connection component. The limiting hole 112 is opened on the U-shaped float 101 and serves as a positioning hole that cooperates with the insertion rod bracket 121. After the insertion rod bracket 121 is inserted into the corresponding limiting hole 112, the seedling platform 102 can be stably installed inside the U-shaped float 101. At the same time, the insertion and cooperation between the insertion rod bracket 121 and the limiting hole 112 also provides a structural basis for subsequent draft height adjustment.

[0028] See Figure 1-3 The pole support 121 has multiple height adjustment holes 122 evenly spaced. Bolts are installed between the pole support 121 and the U-shaped floating frame 101 to adjust and fix the draft of the seedling platform 102 by cooperating with the different height adjustment holes 122. Due to the differences in river water level, seasonal changes, and the different immersion conditions of the seedling space at different seedling stages, if the seedling platform 102 can only maintain a single installation height, the position of the U-shaped frame 103 may be too high or too low, which will affect the flow of water formed by the inlet 131 and the outlet 132. Based on the effect and overall seedling status; in order to enable the seedling platform 102 to be adjusted in stages according to the actual river environment, multiple height adjustment holes 122 are evenly opened on the pole frame 121. Bolts are installed through the pole frame 121 and the U-shaped float 101 and cooperate with the height adjustment holes 122 at different positions. The installer can select different height adjustment holes 122 and lock them with bolts to realize the adjustment and fixation of the draft of the seedling platform 102, and keep the seedling space where the U-shaped frame 103 is located at a working height that is adapted to the external river water environment.

[0029] See Figure 3-5One end of the U-shaped frame 103 is movably connected to the seedling platform 102 via a pivot, and the other end is fixedly connected to the seedling platform 102 via screws. A handle 135 is installed on the other end of the U-shaped frame 103 to allow for lifting the frame 103 for seedling collection after the screws are removed. Since mature seedlings need to be smoothly transferred from the seedling space to the seedling collection port 134 and the seedling collection net 104 after seedling cultivation, if the U-shaped frame 103 cannot be easily opened, the centralized collection process of mature seedlings inside the seedling space will be easily restricted, thus affecting the efficiency and ease of operation. To facilitate the collection of seedlings after seedling cultivation... The seedling space is opened and the seedling collection operation is carried out. One end of the U-shaped frame 103 is movably connected to the seedling platform 102 through a pivot, and the other end of the U-shaped frame 103 is fixedly connected to the seedling platform 102 through screws. During normal seedling cultivation, the pivot, screws, seedling platform 102 and U-shaped frame 103 together maintain the enclosure of the seedling space. During the seedling collection process, after removing the screws, the operator can use the handle 135 to drive the U-shaped frame 103 to rotate and lift around the pivot, so that the mature seedlings inside the U-shaped frame 103 can more easily gather at the seedling collection port 134 and enter the seedling collection net 104.

[0030] See Figure 6 The seedling collection net 104 has an open end, and the end of the seedling collection net 104 is tied with a drawstring. Since the seedling collection process not only needs to receive mature seedlings flowing out of the seedling collection opening 134, but also needs to take into account the temporary storage, transfer, and subsequent retrieval and placement of mature seedlings, if the seedling collection structure only has a simple receiving function, it is easy to encounter problems such as inconvenience in retrieval and placement or inconvenience in centralized transfer after collection. In order to improve the integrity of the operation in the seedling collection stage, the seedling collection net 104 is installed at the seedling collection opening 134 and is used to receive mature seedlings. The end of the seedling collection net 104 is set as an open structure to facilitate the subsequent pouring out or transfer of mature seedlings. The drawstring is tied at the end of the seedling collection net 104 and is used to tighten or loosen the end opening. Thus, while completing the seedling receiving, the seedling collection net 104 can also work with the end opening and the drawstring to achieve centralized retention and subsequent processing of mature seedlings.

[0031] See Figure 4The simulated riverbed 105 is set at both ends inside the U-shaped enclosure 103, and the simulated riverbed 105 is trapezoidal in side view. If only a single flat bottom is retained inside the seedling space, the simulation degree of the seedling space to the natural river environment is low. Aquatic seedlings will find it difficult to obtain an activity and residence environment that is closer to that of a natural riverbed during the seedling process, which will affect the seedling adaptation effect in the flowing water environment of the river. In order to enhance the ability of the seedling space to simulate the state of a natural riverbed, the simulated riverbed 105 is set at both ends inside the U-shaped enclosure 103 and forms a relatively raised mud and sand area in the seedling space. The simulated riverbed 105 adopts a trapezoidal structure in side view, which can form a high-to-low transition accumulation form, so that the simulated area inside the U-shaped enclosure 103 at both ends is closer to the natural riverbed, and it is coordinated with the central water area to improve the rationality of the overall environment of the seedling space.

[0032] See Figure 6-8 The inlet 131 is equipped with a filter screen, and the pore size of the filter screen is larger than the diameter of the algae; the outlet 132 is equipped with a filter cloth. Although the flowing water environment of the river can provide a natural flowing water body for the seedling space, the rationality of the material exchange between the inside and outside of the seedling space still needs to be considered during the process of the flowing water entering and leaving the river. If the inlet and outlet lack supporting filtration conditions, the inflow of substances from the external river water and the discharge from the seedling space may be difficult to control effectively during the flow, thus affecting the adaptation of the seedling space to the river environment; in order to maintain the flowing water environment, the inflow of substances from the external river water and the discharge from the seedling space may be difficult to control effectively during the flow, thus affecting the adaptation of the seedling space to the river environment. While the water flows, the environmental control capability of the seedling space is improved. A filter screen is installed inside the inlet 131 to filter the river water entering the inlet 131. Since the filter screen pore size is larger than the algae diameter, the algae in the external river water can enter the seedling space with the water flow. A filter cloth is installed inside the outlet 132 to block the water flowing out of the outlet 132. Thus, the inlet 131, filter screen, outlet 132 and filter cloth work together to maintain a more suitable exchange state as the water flows continuously through the seedling space.

[0033] See Figure 8 The top of the U-shaped enclosure 103 is covered with a protective net. Since the aquatic seedling raising device is set up in an open environment such as a river, the area above the seedling raising space is easily disturbed by external organisms such as birds. If the top of the seedling raising space lacks necessary protective measures, the aquatic seedlings inside the seedling raising space are easily disturbed during the cultivation process, which in turn affects the stability of the seedling raising process. In order to improve the seedling raising protection effect in the open environment of the river, the protective net covers the top of the U-shaped enclosure 103. The protective net and the U-shaped enclosure 103 together define the upper range of the seedling raising space, thereby providing upper protection for the aquatic seedlings inside the seedling raising space without affecting the corresponding functions of the inlet 131, outlet 132 and seedling collection port 134.

[0034] The working principle of this invention is as follows: When in use, first place the spiral-shaped float 101 on the surface of the river and position it close to the edge of the river. Then, insert the limiting rod 106 through the through hole in the float ear 111 to limit the spiral-shaped float 101 to the edge of the river, thereby initially positioning the entire seedling device and preventing the spiral-shaped float 101 from drifting significantly under the action of water flow.

[0035] After the spiral-shaped floating frame 101 is in position, the seedling platform 102 is connected to the spiral-shaped floating frame 101 via the insert rod bracket 121. Specifically, the insert rod bracket 121 at the end of the seedling platform 102 is inserted into the limiting hole 112 on the spiral-shaped floating frame 101. According to the actual river water level, seedling needs, and the immersion state of the seedling space, different height adjustment holes 122 on the insert rod bracket 121 are selected and connected with bolts to adjust and fix the draft of the seedling platform 102, so that the spiral frame 103 set on the seedling platform 102 is at a suitable working height.

[0036] Next, seedling cultivation is carried out in the seedling space formed inside the U-shaped enclosure 103. During this process, fresh water from outside the river enters the seedling space through the inlet 131 on the upstream side of the U-shaped enclosure 103 and then flows out through the outlet 132 on the downstream side, thus forming a continuously flowing fresh water environment inside the U-shaped enclosure 103. The filter screen installed in the inlet 131 is used to perform preliminary filtration of the water entering the seedling space and ensure that algae can enter with the water flow. The filter cloth installed in the outlet 132 is used to block the water during the outflow process, thereby helping to maintain a suitable environment in the seedling space.

[0037] During the seedling cultivation process, the mud and sand simulated riverbed 105 set at both ends inside the U-shaped enclosure 103 is used to simulate the riverbed environment suitable for the growth and attachment of aquatic seedlings. The mud and sand simulated riverbed 105 is trapezoidal in side view so as to form a corresponding accumulation area in the seedling cultivation space. The seedling collection filter wire mesh 133 set at the bottom of the U-shaped enclosure 103 is located below the mud and sand simulated riverbed 105. During the seedling cultivation period, it is used to separate the mud and sand area from the lower space and plays a filtering and separation role in the subsequent seedling collection process. At the same time, the protective net covering the top of the U-shaped enclosure 103 is used to prevent birds from disturbing the aquatic seedlings in the seedling cultivation space, thereby improving the protection effect during the seedling cultivation process.

[0038] When the seedlings are ready for harvesting, the seedling collection net 104 installed at the seedling collection port 134 is prepared. Since the seedling collection net 104 is installed at the seedling collection port 134 and has an open end with a drawstring, the seedling collection net 104 can receive and collect the seedlings collected through the seedling collection port 134. Subsequently, the screws connecting the other end of the U-shaped frame 103 to the seedling platform 102 are removed, and the U-shaped frame 103 is lifted around the pivot at the other end using the handle 135. During the lifting of the U-shaped frame 103, mature seedlings can be separated by the combined action of the mud and sand simulated riverbed 105 and the seedling collection filter wire mesh 133, and gather towards the seedling collection opening 134, eventually entering the seedling collection net bag 104 to complete the seedling collection operation. After the seedling collection is completed, the opening at the end of the net bag can be operated through the drawstring at the end of the seedling collection net bag 104 to facilitate subsequent processing of the collected seedlings.

[0039] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention are implemented according to conventional methods in the art unless otherwise specified or limited.

Claims

1. An aquatic seedling raising device, characterized in that, It includes a spiral-shaped floating frame (101) floating on the water surface, a seedling platform (102) set inside the spiral-shaped floating frame (101), a spiral-shaped enclosure (103) set on the seedling platform (102), and a limiting rod (106) used to limit the spiral-shaped floating frame (101) at the edge of the river channel. The inside of the U-shaped frame (103) forms a seedling space. The U-shaped frame (103) is provided with an inlet (131) and an outlet (132) so that external fresh water can flow through the seedling space. The spiral frame (103) is also provided with a seedling collection port (134), and a seedling collection net (104) is installed at the seedling collection port (134). The inside of the spiral frame (103) is provided with a mud and sand simulated river beach (105), and the bottom of the spiral frame (103) is provided with a seedling filter wire mesh (133). A connection structure for adjusting the draft of the seedling platform (102) is provided between the seedling platform (102) and the spiral float (101).

2. The aquatic seedling raising device according to claim 1, characterized in that, One end of the spiral-shaped float (101) is provided with a float lug (111), and a through hole is provided inside the float lug (111). The limiting rod (106) passes through the through hole to fix the spiral-shaped float (101) to the edge of the river channel.

3. The aquatic seedling raising device according to claim 1, characterized in that, The connection structure includes a rod holder (121) fixed at the end of the seedling platform (102) and a limiting hole (112) opened on the spiral floating frame (101), wherein the rod holder (121) is inserted into the corresponding limiting hole (112).

4. The aquatic seedling raising device according to claim 3, characterized in that, The insertion rod frame (121) is provided with a plurality of height adjustment holes (122) evenly distributed. A bolt is provided between the insertion rod frame (121) and the spiral float (101) to adjust and fix the draft of the seedling platform (102) by the cooperation of the bolt with different height adjustment holes (122).

5. The aquatic seedling raising device according to claim 1, characterized in that, One end of the spiral frame (103) is movably connected to the seedling platform (102) via a rotating shaft, and the other end is fixedly connected to the seedling platform (102) via screws. A handle (135) is installed on the other end of the spiral frame (103) to lift the spiral frame (103) for collecting seedlings after the screws are removed.

6. The aquatic seedling raising device according to claim 1, characterized in that, The tail end of the seedling collection net (104) is open, and the tail end of the seedling collection net (104) is tied with a drawstring.

7. The aquatic seedling raising device according to claim 1, characterized in that, The simulated riverbed (105) is located at both ends inside the U-shaped frame (103), and the simulated riverbed (105) is trapezoidal when viewed from the side.

8. The aquatic seedling raising device according to claim 1, characterized in that, The inlet (131) is equipped with a filter screen, and the pore size of the filter screen is larger than the diameter of the algae; the outlet (132) is equipped with a filter cloth.

9. An aquatic seedling raising device according to claim 1, characterized in that, The top of the loop-shaped enclosure (103) is covered with a protective net.

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