A device for increasing and cultivating spiral shellfish based on bottom sowing

Abstract

The application discloses a kind of based on bottom sowing mode's spiral shell class aquaculture device, it is related to aquaculture field, it solves the problem that existing cultivation device can cause seedling to be unable to climb out from temporary housing box, including: bottom frame and four side frames being arranged in the outside of bottom frame, the top of side frame is provided with top frame, soft tube is arranged between four top frames, the top of soft tube is installed with mounting bracket, the top of mounting bracket is installed with float ball;It further includes: seedling releasing mechanism, for safely releasing seedling to seabed, seedling releasing mechanism is installed on the top of bottom frame, seedling releasing mechanism includes two sleeve seats being fixedly installed on the top and bottom of side frame respectively;The application is by seedling releasing mechanism, so that bottom frame, side frame and top frame form cubic frame structure, realize the temporary storage of seedling, and when bottom frame is close to seabed, side frame and top frame are automatically opened, realize bottom sowing of shell seedling, facilitate seedling to climb into seabed, and improve bottom sowing efficiency, to reach the effect of efficient bottom sowing, applicable to bottom sowing of multiple batches of seedling.

Description

Technical Field

[0001] This invention relates to the field of aquaculture, specifically to a device for increasing the culture of snails and shellfish based on bottom seeding. Background Technology

[0002] Shellfish and snail aquaculture refers to the cultivation of shellfish and snails from seedlings to marketable size through artificial means, such as introducing artificial seedlings, improving habitats, and protecting resources. It mainly relies on their natural growth and reproduction, and cultivates shellfish and snails in an artificially controlled or semi-controlled environment. This process is close to the natural growth environment, resulting in good quality and relatively low management costs.

[0003] Bottom seeding is a semi-natural shellfish farming method that involves directly sowing artificially cultivated shellfish seedlings onto the seabed in selected and suitable waters. The shellfish then feed freely on natural food sources in the seawater, undergoing a natural growth cycle until they reach marketable size before harvesting. However, after being released to the seabed, the shellfish seedlings need time to attach themselves. During this period, they are easily carried away by ocean currents, making them difficult to harvest later. Existing farming systems use temporary holding boxes to initially place the seedlings on the seabed. As the seedlings grow and gain weight, the boxes are opened. While this prevents the seedlings from being carried away by ocean currents, some seedlings adhere to the boxes during their growth and do not crawl out. Seedlings in the temporary holding boxes do not receive sufficient nutrition, affecting their growth. Summary of the Invention

[0004] The purpose of this invention is to provide a bottom-seeding method for the cultivation of snails and shellfish, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A bottom-seeding method for aquaculture of shellfish includes: a bottom frame and four side frames symmetrically arranged outside the bottom frame; a top frame with a triangular structure is provided on the top of each side frame; a flexible tube is arranged between the four top frames; a mounting frame is fixedly installed on the top of each flexible tube; and a float is fixedly installed on the top of each mounting frame. The device also includes a seedling release mechanism for safely releasing seedlings onto the seabed. The seedling release mechanism is installed on the top of the bottom frame and includes two sleeves respectively fixedly installed on the top and bottom of the side frames. The seat allows the side frame and the top frame to swing open; a quick-release mechanism is used to quickly open the side frame and the top frame. The quick-release mechanism is installed on the inside of the hose and includes a pull rope disposed on the inside of the hose. The pull rope allows workers to easily open the side frame and the top frame on the water surface; a stake mechanism allows the side frame to grip rocks and silt on the seabed. The stake mechanism is installed on the outside of the side frame and includes four symmetrically arranged claws on the outside of the side frame. The claws can swing and insert into the silt on the seabed.

[0007] Preferably, the seedling release mechanism further includes four first connecting rods centrally symmetrically fixedly installed on the outside of the bottom frame; a second connecting rod is fixedly installed on the side of the top frame away from the flexible tube; the sleeves at the top and bottom of the side frame are respectively rotatably installed on the outside of adjacent first and second connecting rods; the inner sides of the first and second connecting rods are connected to the corresponding sleeves via first coil springs; a support rod is fixedly installed on the top of the bottom frame; an installation rod is fixedly installed on the top of the support rod; the flexible tube is fixedly installed on the top of the installation rod; and a sleeve is slidably installed on the outside of the installation rod. A pressure plate is fixedly installed at the bottom of the sleeve, and four centrally symmetrically distributed insertion rods are fixedly installed at the bottom of the pressure plate. A slot for the insertion rods to be inserted is opened at the top of the top frame. A slider is fixedly installed on the inner side of the sleeve, and an elongated groove for the slider to be slidably limited is opened on the outer side of the mounting rod. A contact rod extending to the bottom of the bottom frame is fixedly installed at the bottom of the slider. The contact rod is slidably installed on the inner side of the support rod. An arc-shaped contact block is fixedly installed at the bottom end of the contact rod. A positioning plate is fixedly installed on the outer side of the mounting rod, and a spring is fixedly installed between the bottom of the positioning plate and the top of the pressure plate.

[0008] Preferably, the quick-release mechanism further includes a positioning block fixedly installed at the top of the pull rope, the bottom of the positioning block being in contact with the inner side of the mounting frame, a pull ring fixedly installed at the top of the positioning block, the end of the pull rope away from the positioning block being fixedly installed at the top of the slider, a slide cylinder fixedly installed at the top of the pressure plate, a protective sleeve fixedly installed at the bottom of the positioning plate, and the slide cylinder being slidably installed on the outer side of the protective sleeve, and a fixing rod fixedly installed at the bottom of the mounting frame, with a buckle groove on the outer side of the fixing rod that cooperates with the pull ring.

[0009] Preferably, the stake mechanism further includes a fixed plate fixedly installed at the end of the claw. A storage groove for installing the fixed plate is provided on the outer side of the side frame. A rotating rod is fixedly installed on the outer side of the fixed plate. The rotating rod is rotatably installed on the inner side of the storage groove, and the rotating rod is connected to the inner side of the storage groove through a second coil spring. A support plate is fixedly installed on the side of the bottom frame and the top frame near the claw. A round block is fixedly installed on the outer side of the support plate, and the outer side of the round block is in contact with the outer side of the claw.

[0010] Preferably, limit strips are fixedly installed on the top of the bottom frame and the bottom of the top frame, and the outer side of the limit strips contacts the outer side of the side frame.

[0011] Preferably, the bottom of the base frame is fixedly equipped with four supports that are centrally symmetrically distributed, and the bottom of the supports has a conical structure.

[0012] Preferably, a support bar is fixedly installed at the bottom of the base frame, the contact rod passes through the support bar, and a slot is provided at the bottom of the support bar for the arc-shaped contact block to be inserted into.

[0013] Preferably, two symmetrically distributed abutment rods are fixedly installed at the top and bottom of the side frame, and the ends of the abutment rods are arc-shaped.

[0014] Preferably, the outer side of the fixed plate has two centrally symmetrically distributed arc-shaped grooves, and a limiting rod that is slidably installed inside the arc-shaped groove is fixedly installed in the storage groove of the side frame.

[0015] Preferably, two symmetrically distributed baffles are fixedly installed on the side of the claw near the circular block, and the outer side of the baffles contacts the outer side of the circular block.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. This invention uses a seedling release mechanism to form a cubic frame structure consisting of a bottom frame, side frames, and a top frame, which allows for temporary storage of seedlings. When the bottom frame approaches the seabed, the side frames and top frame automatically open to facilitate bottom seeding of shellfish seedlings. This makes it easier for the seedlings to crawl into the seabed and improves the efficiency of bottom seeding, thus achieving a highly efficient bottom seeding effect. It is suitable for bottom seeding of multiple batches of seedlings.

[0018] 2. The present invention, through a quick-release mechanism, allows workers to pull the pull ring to move the slider when the arc-shaped contact block is in contact with a soft layer of mud and sand and cannot move, thereby unlocking the pressure plate from the top frame. The top frame and the side frame can then be opened directly, thus facilitating the bottom sowing of seedlings.

[0019] 3. The present invention, through the fixed pile mechanism, enables the claws to swing and insert into the mud or abut against the outside of the rocks when the side frame swings open, so that the claws can grab the rocks or mud, improve the grip of the side frame, and thus improve the stability of the side frame when placed on the seabed. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the side frame and bottom frame structure in this invention;

[0022] Figure 3 This is a schematic diagram of the pull ring and mounting bracket structure in this invention;

[0023] Figure 4 This is a schematic diagram of the positioning plate and pressure plate structure in this invention;

[0024] Figure 5 This is a schematic diagram of the slider and sleeve structure in this invention;

[0025] Figure 6 This is a schematic diagram of the arc contact block and the first coil spring structure in this invention;

[0026] Figure 7 for Figure 6 Enlarged structural diagram of area A in the middle;

[0027] Figure 8 This is a schematic diagram of the baffle and circular block structure in this invention.

[0028] In the diagram: 1. Base frame; 2. Side frame; 3. Top frame; 4. Flexible hose; 5. Mounting bracket; 6. Float; 7. Sleeve; 8. Pull rope; 9. Claw; 10. First connecting rod; 11. Second connecting rod; 12. First coil spring; 13. Support rod; 14. Mounting rod; 15. Sleeve; 16. Pressure plate; 17. Insert rod; 18. Slider; 19. Contact rod; 20. Arc contact block; 21. Positioning plate; 22. Spring; 23. Positioning block; 24. Pull ring; 25. Slide cylinder; 26. Protective sleeve; 27. Fixing rod; 28. Fixing plate; 29. ​​Rotating rod; 30. Second coil spring; 31. Support plate; 32. Round block; 33. Limiting strip; 34. Support; 35. Supporting strip; 36. Abutment rod; 37. Limiting rod; 38. Stop bar. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Example 1: Please refer to Figures 1-8 The diagram illustrates a bottom-seeding method for aquaculture of shellfish, comprising a bottom frame 1 and four side frames 2 symmetrically arranged outside the bottom frame 1. A top frame 3, triangular in structure, is located on top of each side frame 2, forming a square frame structure for temporarily storing shellfish larvae. A flexible hose 4 connects the four top frames 3, with a mounting frame 5 fixedly installed on the top of the hose 4. A float 6 is fixedly installed on the top of the mounting frame 5. The bottom frame 1, side frames 2, and top frames 3 are lowered to the seabed via the hose 4, while the float 6 floats on the water surface, facilitating the direct release of larvae to the seabed. The device also includes a seedling release mechanism, installed on top of the bottom frame 1, for safely releasing larvae to the seabed.

[0031] The seedling release mechanism includes two sleeves 7 fixedly installed at the top and bottom of the side frame 2, respectively. The sleeves 7 allow the side frame 2 and the top frame 3 to swing open. The seedling release mechanism also includes four first connecting rods 10 fixedly installed symmetrically on the outside of the bottom frame 1. A second connecting rod 11 is fixedly installed on the side of the top frame 3 away from the hose 4. The sleeves 7 at the top and bottom of the side frame 2 are rotatably installed on the outside of the adjacent first connecting rod 10 and second connecting rod 11, respectively. The inner sides of the first connecting rod 10 and second connecting rod 11 are connected to the corresponding sleeves 7 through first coil springs 12. A support rod 13 is fixedly installed on the top of the bottom frame 1. An installation rod 14 is fixedly installed on the top of the support rod 13. The hose 4 is fixedly installed on the top of the installation rod 14. A sleeve 15 is slidably installed on the outside of the installation rod 14. A pressure plate 16 is fixedly installed at the bottom of the sleeve 15. Four centrally symmetrically distributed insertion rods 17 are fixedly installed at the bottom of the pressure plate 16. The top of the top frame 3 has a slot for the insertion rods 17 to be inserted, so that the pressure plate 16 can insert the insertion rods 17 into the slots at the top of the top frame 3 to lock the top frame 3. The bottom frame 1, side frame 2 and top frame 3 can form a cubic frame structure. When the insertion rods 17 move away from the top frame 3, the rebound force of the first coil spring 12 causes the top frame 3 and side frame 2 to swing outward and open, so that the seedlings can climb outward during growth. A slider 18 is fixedly installed on the inner side of the sleeve 15. A long groove for the slider 18 to be limited and slid on the outer side of the mounting rod 14 is provided. A contact rod 1 extending to the bottom of the bottom frame 1 is fixedly installed at the bottom of the slider 18. 9. The contact rod 19 is slidably installed on the inner side of the support rod 13. An arc-shaped contact block 20 is fixedly installed at the bottom end of the contact rod 19. When the arc-shaped contact block 20 contacts the rocks on the seabed, it can push the contact rod 19 upward along the inner side of the support rod 13. The contact rod 19 can then drive the sleeve 15 to move through the slider 18, causing the insertion rod 17 on the pressure plate 16 to be pulled out from the slot at the top of the top frame 3. A positioning plate 21 is fixedly installed on the outer side of the mounting rod 14. A spring 22 is fixedly installed between the bottom of the positioning plate 21 and the top of the pressure plate 16. The elasticity of the spring 22 can be used to make the pressure plate 16 press against the top of the top frame 3. Limiting strips 33 are fixedly installed on the top of the bottom frame 1 and the bottom of the top frame 3. The outer side of the limiting strip 33 is connected to the outer side of the side frame 2. When the side frame 2 is folded and aligned with the bottom frame 1 and top frame 3 respectively, the side frame 2 can contact the limiting strip 33, ensuring that the bottom frame 1 and top frame 3 are at a 90-degree angle to the side frame 2. Four centrally symmetrical supports 34 are fixedly installed at the bottom of the bottom frame 1, and the bottom of the supports 34 has a conical structure, allowing the bottom frame 1 to contact the seabed sediment through the supports 34. A support strip 35 is fixedly installed at the bottom of the bottom frame 1, and the contact rod 19 passes through the support strip 35. The bottom of the support strip 35 has a slot for the arc-shaped contact block 20 to be inserted, facilitating the storage of the arc-shaped contact block 20. Two symmetrically distributed abutment rods 36 are fixedly installed at the top and bottom of the side frame 2, and the ends of the abutment rods 36 have an arc-shaped structure, allowing the side frame 2 to swing open.This allows the top and bottom abutments 36 to contact the top frame 3 and bottom frame 1 respectively, while the side frame 2 can be horizontally aligned with the bottom frame 1 and top frame 3 respectively.

[0032] Example 2: Please refer to Figures 1-6 This embodiment further illustrates Example 1. The quick-release mechanism shown in the figure includes a pull rope 8 disposed inside the hose 4. The pull rope 8 facilitates the opening of the side frame 2 and the top frame 3 by the operator on the water surface. The quick-release mechanism also includes a positioning block 23 fixedly installed at the top of the pull rope 8. The bottom of the positioning block 23 contacts the inner side of the mounting bracket 5. A pull ring 24 is fixedly installed at the top of the positioning block 23. The end of the pull rope 8 away from the positioning block 23 is fixedly installed at the top of the slider 18. When the pull ring 24 is pulled, the slider 18 can be moved by pulling the pull rope 8, thereby manually opening the top frame 3. The top of the pressure plate 16 is fixed. The mounting bracket 5 is equipped with a sliding cylinder 25, and a protective sleeve 26 is fixedly installed on the bottom of the positioning plate 21. The sliding cylinder 25 is slidably installed on the outside of the protective sleeve 26. A fixing rod 27 is fixedly installed on the bottom of the mounting bracket 5, and a buckle groove that cooperates with the pull ring 24 is opened on the outside of the fixing rod 27 when the operator pulls the pull ring 24, so as to keep the spring 22 stretched and keep the arc contact block 20 away from the seabed surface. This provides a second way to open the top frame 3 and the side frame 2, and avoids the arc contact block 20 from being unable to move when it comes into contact with the seabed mud and sand.

[0033] Example 3: Please refer to Figures 2-8This embodiment further illustrates other embodiments. The pile-fixing mechanism shown in the figure includes four symmetrically arranged claws 9 on the outside of the side frame 2. The claws 9 can swing and insert into the mud and sand on the seabed. The pile-fixing mechanism also includes a fixing plate 28 fixedly installed at the end of the claws 9. A storage groove for installing the fixing plate 28 is opened on the outside of the side frame 2. A rotating rod 29 is fixedly installed on the outside of the fixing plate 28. The rotating rod 29 is rotatably installed on the inside of the storage groove, and the rotating rod 29 is connected to the inside of the storage groove through a second coil spring 30. The elasticity of the second coil spring 30 can be used to pull the claws 9 into the storage groove through the rotating rod 29 and the fixing plate 28. A support plate 31 is fixedly installed on the side of the bottom frame 1 and the top frame 3 near the claws 9. A round block 32 is fixedly installed on the outside of the support plate 31. The outside of the round block 32 contacts the outside of the claws 9, so that when the side frame 2 is opened outward, the claws 9 can move along the round block 32. The outer side of the side frame 2 moves, and the reaction force of the circular block 32 on the claw 9 causes the claw 9 to rotate through the fixed plate 28 and drive the rotating rod 29 to rotate. The claw 9 can then swing and insert into the mud or abut against the outside of the stone, so that the claw 9 can grab the stone or mud and improve the grip of the side frame 2. The outer side of the fixed plate 28 has two arc-shaped grooves that are centrally symmetrically distributed. The storage groove of the side frame 2 is fixedly installed with a limiting rod 37 that is slidably installed inside the arc-shaped groove. When the fixed plate 28 rotates, the arc-shaped groove on its outer side can move along the outer side of the limiting rod 37 to prevent the fixed plate 28 from rotating too much. Two symmetrically distributed baffles 38 are fixedly installed on the side of the claw 9 near the circular block 32. The outer side of the baffles 38 contacts the outer side of the circular block 32, so that when the circular block 32 pushes the claw 9 to swing, the baffles 38 can move along the outer side of the circular block 32 to provide support for the side of the claw 9.

[0034] Working principle: First, the operator closes the four side frames 2 to form a square frame structure. The shellfish larvae are placed between the side frames 2 and the bottom frame 1. Then, the four top frames 3 are closed, causing the sleeves 7 on the side frames 2 to compress the first coil spring 12. The four insert rods 17 on the pressure plate 16 are inserted into the slots of the four top frames 3 respectively. The bottom frame 1, the four side frames 2, and the four top frames 3 form a square frame structure for temporary storage of the larvae. Then, the operator pulls the hose 4 and lowers the bottom frame 1 into the seabed. The weight of the bottom frame 1, side frames 2, and top frames 3 brings the bottom frame 1 closer to the seabed. When the arc-shaped contact block 20 contacts a rock on the seabed, the reaction force of the rock on the arc-shaped contact block 20 pushes the contact rod 19 to move. The contact rod 19 pushes the slider 18 to move along the long groove of the mounting rod 14. The slider 18 drives the sleeve 15 to move along the outside of the mounting rod 14, causing the sleeve 15 to drive the insert rods 17 on the pressure plate 16 from the top... Pull out of the slot of frame 3, and use the rebound force of the first coil spring 12 to make the top and bottom sleeves 7 of side frame 2 swing outward of bottom frame 1 with the second connecting rod 11 and the first connecting rod 10 as fulcrums. The top and bottom abutting rods 36 of side frame 2 contact the outer side of top frame 3 and the outer side of bottom frame 1 respectively, so that bottom frame 1, side frame 2 and top frame 3 are in an open state. At the same time, the claw 9 on side frame 2 swings against the outer side of round block 32. During the swing of side frame 2, the reaction force of round block 32 on claw 9 makes claw 9 swing outward along the inner side of the storage groove. Claw 9 can then abut against the outer side of the rocks on the seabed, improving the grip of side frame 2. Finally, inflate the buoy 6 so that the buoy 6 floats on the sea surface, which is convenient for staff to retrieve later. Seedlings can also crawl out of bottom frame 1, so that seedlings can be safely bottom-seeded, preventing the sea current from carrying the seedlings away, thus achieving the effect of safe bottom-seeding.

[0035] When the arc-shaped contact block 20 is in contact with the mud and sand on the seabed and cannot move, or is not in contact with the rocks and is suspended in the air, the staff can pull the pull ring 24, so that the pull ring 24 pulls the pull rope 8 upward through the positioning block 23. The pull rope 8 can then pull the slider 18 to move, thereby separating the insertion rod 17 from the slot on the top frame 3, thus improving the convenience of seedling bottom sowing.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for aquaculture of snails and shellfish based on bottom seeding, characterized in that, include: The bottom frame and four side frames located outside the bottom frame are provided. The top frame is provided on the top of the side frames and the top frame is triangular in structure. The bottom frame, the four side frames and the four top frames form a square frame structure for temporary storage of shellfish seedlings. A flexible tube is provided between the four top frames. An installation frame is installed on the top of the flexible tube and a float is installed on the top of the installation frame. Also includes: The seedling release mechanism is used to safely deploy seedlings to the seabed. It is installed on the top of the base frame and includes two sleeves fixedly installed on the top and bottom of the side frames, respectively. These sleeves allow the side and top frames to swing open. The mechanism also includes four first connecting rods installed on the outside of the base frame. A second connecting rod is fixedly installed on one side of the top frame. The sleeves on the top and bottom of the side frames are rotatably installed on the outside of adjacent first and second connecting rods. The inner sides of the first and second connecting rods are connected to their corresponding sleeves via first coil springs. A support rod is installed on the top of the base frame, and an installation rod is installed on the top of the support rod. A flexible hose is installed at the top of the installation rod, and a sleeve is slidably installed on the outside of the installation rod. The bottom of the sleeve is fixedly installed... There is a pressure plate, and four insert rods are fixedly installed at the bottom of the pressure plate. The top of the top frame has a slot for the insert rods to be inserted and locked. When the insert rods move away from the top frame, the rebound force of the first coil spring causes the top frame and side frame to swing outward and open. A slider is fixedly installed on the inner side of the sleeve. A long groove for the slider to be limited and slid is opened on the outer side of the mounting rod. A contact rod is fixedly installed at the bottom of the slider. An arc contact block is fixedly installed at the bottom end of the contact rod. When the arc contact block contacts the rocks on the seabed, the insert rod on the pressure plate is pulled out from the slot at the top of the top frame. A positioning plate is fixedly installed on the outer side of the mounting rod. A spring is installed between the bottom of the positioning plate and the top of the pressure plate. The quick-release mechanism is used to quickly open the side frame and the top frame. The quick-release mechanism is installed inside the hose and includes a pull rope inside the hose. The pull rope makes it easy for workers to open the side frame and the top frame on the water surface. The quick-release mechanism also includes a positioning block installed at the top of the pull rope. The bottom of the positioning block contacts the inside of the mounting frame. A pull ring is installed on the top of the positioning block. One end of the pull rope is fixedly installed on the top of the slider. A slide cylinder is fixedly installed on the top of the pressure plate. A protective sleeve is fixedly installed on the bottom of the positioning plate, and the slide cylinder is slidably installed on the outside of the protective sleeve. A fixing rod is fixedly installed on the bottom of the mounting frame, and a buckle groove that cooperates with the pull ring is opened on the outside of the fixing rod. The piling mechanism allows the side frame to grip rocks and silt on the seabed. The piling mechanism is installed on the outside of the side frame and includes four claws located on the outside of the side frame. These claws can swing and insert into the silt on the seabed. The piling mechanism also includes a fixing plate installed at the end of the claws. A storage slot for the fixing plate is provided on the outside of the side frame. A rotating rod is fixedly installed on the outside of the fixing plate and rotatably mounted on the inside of the storage slot. The rotating rod is connected to the inside of the storage slot via a second coil spring. Support plates are installed on one side of both the bottom and top frames. A circular block is fixedly installed on the outside of the support plate. The outside of the circular block contacts the outside of the claws, allowing the claws to move along the outside of the circular block when the side frame opens outwards. The reaction force of the circular block on the claws causes the claws to rotate via the fixing plate, allowing the claws to swing and insert into the silt or press against the outside of rocks, thus gripping the rocks or silt.

2. The snail and shellfish aquaculture device based on bottom seeding according to claim 1, characterized in that: Limiting strips are fixedly installed on the top of the bottom frame and the bottom of the top frame, with the outer side of the limiting strips contacting the outer side of the side frame.

3. The snail and shellfish aquaculture device based on bottom seeding according to claim 1, characterized in that: The bottom of the base frame is equipped with four supports, and the bottom of the supports has a conical structure.

4. The snail and shellfish aquaculture device based on bottom seeding according to claim 1, characterized in that: A support bar is fixedly installed at the bottom of the base frame, and the contact rod passes through the support bar.

5. A shellfish aquaculture device based on bottom seeding according to claim 1, characterized in that: Two abutment rods are fixedly installed at the top and bottom of the side frame, and the ends of the abutment rods are arc-shaped.

6. A shellfish aquaculture device based on bottom seeding according to claim 1, characterized in that: Two arc-shaped grooves are provided on the outer side of the fixed plate, and a limiting rod that is slidably installed inside the arc-shaped groove is fixedly installed in the storage groove of the side frame.

7. A shellfish aquaculture device based on bottom seeding according to claim 1, characterized in that: Two stop bars are installed on one side of the claw, and the outer side of the stop bars contacts the outer side of the circular block.

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