Macrobrachium rosenbergii offspring seed net

Abstract

The utility model discloses a macrobrachium rosenbergii offspring seed pull net, and belongs to the technical field of aquaculture, the macrobrachium rosenbergii offspring seed pull net comprises a fixing frame, a fishing net is movably connected to the interior of the fixing frame, floating columns are fixedly connected to the upper portions of the front side and the rear side of the fixing frame, and a pull rope is fixedly connected to the left side of the fixing frame; the end, away from the fixing frame, of the pull rope is fixedly connected with a winding device. By arranging the fishing net, screening of macrobrachium rosenbergii offspring seeds of different sizes is facilitated, the fishing net is inserted into the inserting groove to be fixed during use, the fixing frame can be thrown into a culture pond after fixing is completed, then the pull rope is pulled, and the winding rope is wound on the rotary drum to be wound, so that the macrobrachium rosenbergii offspring seeds can be screened conveniently. The fixing frame moves along with pulling of the pull rope, the catching nets can catch prawn seeds, meshes of net bodies in the multiple catching nets are sequentially decreased from left to right, the prawn seeds of different sizes can be screened, manual sorting is not needed, and the labor intensity is reduced.

Description

Technical Field

[0001] This application relates to the field of aquaculture technology, and in particular to a net for seizing giant freshwater prawn larvae. Background Technology

[0002] Giant freshwater prawn, also known as freshwater long-armed prawn or Malaysian prawn, is one of the world's largest freshwater shrimp species. Due to its rapid growth, large size, and rich nutrition, it has become an important economic aquaculture species. When farming giant freshwater prawns, seine nets are used to catch the prawn larvae.

[0003] However, the existing giant freshwater prawn seine nets have the following drawbacks: for example, when using the existing giant freshwater prawn seine nets, they cannot separate giant freshwater prawn larvae of different sizes, resulting in larvae of different sizes in the same batch being of different sizes. This requires manual sorting of giant freshwater prawn larvae of different sizes, which is labor-intensive. Summary of the Invention

[0004] The purpose of this application is to provide a strafe net for giant freshwater prawn larvae.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: a seine net for giant freshwater prawn larvae, comprising a fixed frame, a fishing net movably connected inside the fixed frame, floats fixedly connected to the upper sides of both the front and rear sides of the fixed frame, a pull rope fixedly connected to the left side of the fixed frame, a winding device fixedly connected to the end of the pull rope away from the fixed frame, the fishing net comprising a connecting frame movably connected inside the fixed frame, a net body fixedly connected to the inner side of the connecting frame, a connecting plate fixedly connected to the top of the connecting frame, a pull handle fixedly connected to the top of the connecting plate, and rubber strips fixedly connected to both sides of the connecting plate.

[0006] As a preferred embodiment, the fixed frame includes a frame body, with counterweight columns fixedly connected to the lower sides of both the front and rear sides of the frame body. The outer side of the frame body has a through hole, the inner side of the frame body has a slot, and the upper side of the inner side of the frame body has a fixing groove.

[0007] As another preferred embodiment, the buoy includes a column fixedly connected to the upper front and rear sides of the frame, and both sides of the inner side of the column are fixedly connected to a closed plate.

[0008] Further preferably, the pull rope includes a connecting rope fixedly connected to the left side of the frame, and a winding rope is fixedly connected to the end of the connecting rope away from the frame.

[0009] Further preferably, the winding device includes a rotating drum fixedly connected to the end of the winding rope away from the frame. A fixed shaft is movably connected inside the rotating drum. Limiting discs are fixedly connected to both sides of the fixed shaft. A handle is fixedly connected to the side of the limiting disc away from the fixed shaft. A bolt is threaded inside the front limiting disc. A limiting groove is provided on the front side of the rotating drum.

[0010] Further optimization involves decreasing the mesh size of the net within the fixed frame from left to right.

[0011] Compared with the prior art, the beneficial effects of this application are as follows:

[0012] This invention, featuring a catching net, facilitates the screening of giant freshwater prawn larvae of different sizes. In use, the connecting frame is inserted into the slot, and repeated insertion ensures the rubber strip contacts the frame. Squeezing deforms the rubber strip, allowing the connecting frame to fully insert into the slot and the rubber strip to enter the fixing groove, thus securing the catching net. After securing, the fixing frame is dropped into the aquaculture pond. The counterweight causes the fixing frame to sink, and the float ensures the lower part of the fixing frame faces the bottom of the pond. Pulling the pull rope winds the winding rope around the rotating drum, causing the fixing frame to move and allowing the catching net to capture the prawn larvae. The mesh size of the multiple catching nets decreases from left to right, enabling the screening of prawn larvae of different sizes without manual sorting, reducing labor intensity. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the netting system for the giant freshwater prawn larvae;

[0014] Figure 2 A schematic diagram of the overall structure of the fixing frame for the giant freshwater prawn larvae netting;

[0015] Figure 3 Netting the giant freshwater prawn larvae Figure 2 Enlarged structural diagram at point A in the middle;

[0016] Figure 4 A schematic diagram of the overall structure of the seine net used to catch giant freshwater prawn larvae;

[0017] Figure 5 A schematic cross-sectional view of the winding device for the netting of the giant freshwater prawn larvae.

[0018] In the diagram: 1. Fixed frame; 101. Frame body; 102. Counterweight column; 103. Through hole; 104. Slot; 105. Fixed groove; 2. Fishing net; 201. Connecting plate; 202. Pull handle; 203. Rubber strip; 204. Connecting frame; 205. Net body; 3. Float; 301. Column body; 302. Enclosure plate; 4. Pull rope; 401. Connecting rope; 402. Winding rope; 5. Winding device; 501. Rotary drum; 502. Fixed shaft; 503. Limiting groove; 504. Bolt; 505. Handle; 506. Limiting plate. Detailed Implementation

[0019] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0020] In the description of this application, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this application.

[0021] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0022] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0023] like Figure 1-5The illustrated giant freshwater prawn seine net includes a fixed frame 1, with a movably connected fishing net 2 inside the fixed frame 1. Floats 3 are fixedly connected to the top of both the front and rear sides of the fixed frame 1. A pull rope 4 is fixedly connected to the left side of the fixed frame 1, and a winding device 5 is fixedly connected to the end of the pull rope 4 away from the fixed frame 1. The fishing net 2 includes a connecting frame 204 movably connected inside the fixed frame 1. The connecting frame 204 can be raised and lowered inside the frame body 101. A net body 205 is fixedly connected to the inner side of the connecting frame 204. A connecting plate 201 is fixedly connected to the top of the connecting frame 204, and a handle 202 is fixedly connected to the top of the connecting plate 201. Rubber strips 203 are fixedly connected to both sides of the connecting plate 201. In use, the connecting frame 204 is inserted into the slot 104, and through repeated insertion, the rubber strips 203 come into contact with the frame body 101. 1. By squeezing, the rubber strip 203 can be deformed, allowing the connecting frame 204 to be fully inserted into the slot 104 and the rubber strip 203 to enter the fixing groove 105, thereby fixing the fishing net 2. After fixing, the fixing frame 1 is thrown into the aquaculture pond. Under the action of the counterweight column 102, the fixing frame 1 can sink into the water, and under the action of the float column 3, the lower part of the fixing frame 1 can face the bottom of the aquaculture pond. Then, the pull rope 4 is pulled and the winding rope 402 is wound around the rotating drum 501 for winding. As the pull rope 4 is pulled, the fixing frame 1 moves accordingly, allowing the fishing net 2 to catch shrimp larvae. The mesh size of the net body 205 in the multiple fishing nets 2 decreases from left to right, which can screen shrimp larvae of different sizes without manual sorting, reducing labor intensity.

[0024] Furthermore, the fixed frame 1 includes a frame body 101, with counterweight columns 102 fixedly connected to the lower sides of both the front and rear sides of the frame body 101. The counterweight columns 102 are used to ensure that the center of gravity of the frame body 101 is at the bottom. The outer side of the frame body 101 is provided with a through hole 103 for water to pass through. The inside of the frame body 101 is provided with a slot 104 for insertion of the frame body 101. The upper inner side of the frame body 101 is provided with a fixing groove 105 for the rubber strip 203 to enter.

[0025] Furthermore, the float 3 includes a column 301 fixedly connected to the upper front and rear sides of the frame 101. Both sides of the inner side of the column 301 are fixedly connected to a sealing plate 302. Air is filled between the sealing plate 302 and the frame 101 to improve the buoyancy of the float 3. When the fixed frame 1 is thrown into the water, the fixed frame 1 can sink into the water under the action of the counterweight column 102. When the fixed frame 1 tilts, the fixed frame 1 can gradually return to its original position under the action of the weight of the counterweight column 102 and the buoyancy of the float 3, ensuring that the lower part of the fixed frame 1 faces the bottom of the aquaculture pond after it sinks into the water.

[0026] Furthermore, the pull rope 4 includes a connecting rope 401 fixedly connected to the left side of the frame 101, and a winding rope 402 fixedly connected to the end of the connecting rope 401 away from the frame 101. The pull rope 4 is used to pull the fixed frame 1.

[0027] Furthermore, the winding device 5 includes a rotating drum 501 fixedly connected to the end of the winding rope 402 away from the frame 101. A fixed shaft 502 is movably connected inside the rotating drum 501, allowing the rotating drum 501 and the fixed shaft 502 to rotate relative to each other. Limiting discs 506 are fixedly connected to both sides of the fixed shaft 502. A handle 505 is fixedly connected to the side of the limiting disc 506 away from the fixed shaft 502. A bolt 504 is threaded into the front limiting disc 506. A limiting groove 503 is provided on the front side of the rotating drum 501, allowing for... Loosening bolt 504 allows it to leave the limiting groove 503, enabling the rotating drum 501 and the fixed shaft 502 to rotate relative to each other, facilitating the release of the pull rope 4. Tightening bolt 504 allows it to be inserted into the limiting groove 503, preventing the rotating drum 501 and the fixed shaft 502 from rotating relative to each other. This allows the user to pull the winding device 5 so that the pull rope 4 can drive the fixed frame 1 to catch shrimp larvae. At the same time as pulling, the winding device 5 can be rotated so that the pull rope 4 can be wound onto the outside of the rotating drum 501.

[0028] Furthermore, the mesh size of the net body 205 in the fishing net 2 inside the fixed frame 1 decreases from left to right, which facilitates the screening of shrimp larvae of different sizes.

[0029] Working principle: During use, the connecting frame 204 is inserted into the slot 104. Through repeated insertion, the rubber strip 203 comes into contact with the frame 101. Squeezing causes the rubber strip 203 to deform, allowing the connecting frame 204 to be fully inserted into the slot 104 and the rubber strip 203 to enter the fixing groove 105, thus securing the fishing net 2. After securing, the fixing frame 1 is thrown into the aquaculture pond. Under the action of the counterweight column 102, the fixing frame 1 sinks into the water, and under the action of the float column 3, it remains fixed. The lower part of frame 1 can face the bottom of the aquaculture pond. Then, pull the pull rope 4 and wind the winding rope 402 around the rotating drum 501 to wind it up. As the pull rope 4 is pulled, the fixed frame 1 moves accordingly, so that the catching net 2 can catch the shrimp larvae. The mesh size of the net body 205 in the multiple catching nets 2 decreases from left to right, which can screen the shrimp larvae of different sizes without manual sorting, reducing labor intensity. After the catching is completed, the fixed frame 1 is pulled out of the aquaculture pond. The catching nets 2 are pulled out from right to left and the shrimp larvae are poured into different positions.

[0030] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A net for raising giant freshwater prawn larvae, comprising a fixed frame (1), characterized in that: A fishing net (2) is movably connected inside the fixed frame (1). Floats (3) are fixedly connected to the top of both the front and rear sides of the fixed frame (1). A pull rope (4) is fixedly connected to the left side of the fixed frame (1). A winding device (5) is fixedly connected to the end of the pull rope (4) away from the fixed frame (1). The fishing net (2) includes a connecting frame (204) movably connected inside the fixed frame (1). A net body (205) is fixedly connected to the inner side of the connecting frame (204). A connecting plate (201) is fixedly connected to the top of the connecting frame (204). A handle (202) is fixedly connected to the top of the connecting plate (201). Rubber strips (203) are fixedly connected to both sides of the connecting plate (201).

2. The giant freshwater prawn seedling seine net as described in claim 1, characterized in that: The fixed frame (1) includes a frame body (101), and counterweight columns (102) are fixedly connected to the lower sides of the front and rear sides of the frame body (101). The outer side of the frame body (101) is provided with a through hole (103), the inside of the frame body (101) is provided with a slot (104), and the upper side of the inner side of the frame body (101) is provided with a fixing groove (105).

3. The giant freshwater prawn seedling seine net as described in claim 1, characterized in that: The float (3) includes a column (301) fixedly connected to the upper front and rear sides of the frame (101), and a sealing plate (302) is fixedly connected to both sides of the inner side of the column (301).

4. The giant freshwater prawn seedling seine net as described in claim 1, characterized in that: The pull rope (4) includes a connecting rope (401) fixedly connected to the left side of the frame (101), and a winding rope (402) is fixedly connected to one end of the connecting rope (401) away from the frame (101).

5. The giant freshwater prawn seedling seine net as described in claim 1, characterized in that: The winding device (5) includes a drum (501) fixedly connected to the end of the winding rope (402) away from the frame (101). A fixed shaft (502) is movably connected inside the drum (501). Limiting discs (506) are fixedly connected to both sides of the fixed shaft (502). A handle (505) is fixedly connected to the side of the limiting disc (506) away from the fixed shaft (502). A bolt (504) is threaded inside the front limiting disc (506). A limiting groove (503) is provided on the front side of the drum (501).

6. The giant freshwater prawn seedling seine net as described in claim 1, characterized in that: The mesh size of the net body (205) in the fishing net (2) inside the fixed frame (1) decreases from left to right.

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