A marine benthic organism trapping device

Abstract

This invention discloses a marine benthic organism trapping device, comprising a trapping box, a bait tube, and a lid. The trapping box has an open top and flow holes on its surface. The lid is detachably connected to the top of the trapping box via a quick-release mechanism. The bait tube is fixed to the lid and extends into the trapping box, with bait holes on its surface. A trapping opening is located on the side of the trapping box. Partitions are arranged opposite each other on both sides of the trapping opening inside the trapping box. An upper sealing plate is located between the partitions. The upper sealing plate, partitions, and bottom of the trapping box together form a trapping channel. An escape-prevention door that rotates in one direction is located within the trapping channel. The inner corner of the trapping box, the partitions on both sides of the inner corner, and the lid together form a concentrated cavity. The opening between the partitions on both sides of the inner corner forms a guide opening. This invention has a simple structure, is easy to use, effectively prevents marine benthic organisms from escaping, facilitates the removal of marine benthic organisms, and allows for a long trapping period.

Description

Technical Field

[0001] This invention relates to a marine benthic organism sampling device, and more particularly to a marine benthic organism trapping device. Background Technology

[0002] Marine benthic organisms are those that inhabit the seabed or its surface, and are an important ecological type of aquatic life. Based on their lifestyle, they can be categorized into sessile, burrowing, bottom-crawling, burrowing, and bottom-swimming types. Examples include snails, starfish, sea urchins, and brittle stars, which crawl on the seabed. Marine benthic organisms are a vital ecological group within marine life, and due to their complex and diverse structures and ecosystems, as well as their close economic relationship with humans, they receive considerable attention.

[0003] Sampling is often required when studying the species and distribution density of marine benthic organisms. For marine benthic organisms that crawl on the seabed, trapping is a common sampling method. For example, application publication number CN105409894A, published on March 23, 2016, discloses a deep-sea benthic organism escape-proof trap, which includes a cylinder, barbels, and a tension line. The cylinder has a bait box inside, and inlets at both ends of the cylinder. The two inlets are connected to the barbels, and the barbels are tightened together by the tension line. The barbels are open at both ends, and the openings of the barbels gradually decrease in size from the outside to the inside. The trap has the following defects: (1) Marine benthic organisms such as snails and shellfish crawling on the seabed have difficulty crawling into the tube, and the trap is not suitable for trapping marine benthic organisms crawling on the seabed; (2) The trap is open, and during the trapping process, some swimming benthic organisms can still escape from the cone-shaped entrance; (3) When benthic organisms pass through the barbels and are hooked by the barbels on their feet or claws, it is difficult for them to get rid of them, which will block the cone-shaped entrance and prevent the trap from continuing to trap them; (4) Benthic organisms inside the tube are not easy to remove. Summary of the Invention

[0004] The present invention addresses the aforementioned technical problems of existing traps by providing a marine benthic organism trapping device that is simple in structure, easy to use, effectively prevents the escape of marine benthic organisms, facilitates the removal of marine benthic organisms, and has a long trapping duration.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A marine benthic organism trapping device of the present invention includes a trapping box, a bait tube, and a box cover. The top of the trapping box is open, and the surface of the trapping box is provided with a flow hole. The box cover is detachably connected to the top of the trapping box through a quick-release connection mechanism. The bait tube is fixed to the box cover and extends into the trapping box. The surface of the bait tube is provided with a bait hole. The side of the trapping box is provided with a trapping opening. Partitions are provided on both sides of the trapping opening inside the trapping box. An upper sealing plate is provided between the partitions. The upper sealing plate, the partitions, and the bottom of the trapping box form a trapping channel. An escape door that rotates in one direction inward is provided in the trapping channel. The inner corner of the trapping box, the partitions on both sides of the inner corner of the trapping box, and the box cover form a concentrated cavity. The opening between the partitions on both sides of the inner corner forms a guide opening. This invention is stably deployed on the seabed and is mainly used to trap marine benthic organisms that crawl on the seabed, such as crabs and shellfish. Bait is placed inside the bait tube, and the shape and size of the bait holes on the surface of the tube can be set according to whether the marine benthic organisms are to ingest the bait. Lured by the bait, the marine benthic organisms enter the trapping channel (which is unobstructed and has minimal resistance) through the trapping opening. They can then push open the escape-proof door to enter the trapping box, preventing them from getting stuck in the trapping channel. The escape-proof door rotates inward in one direction only; once closed, it cannot be pushed open outward. This design ensures that marine benthic organisms cannot escape once they enter the trapping box. Since the organisms cannot escape through the trapping channel and the trapping box has flow holes that connect the collection chamber to the outside, the organisms are guided into the collection chamber through the guide holes due to the low resistance. This also prevents the organisms from gathering around the bait tube. The lid is detachable from the trapping box, making it very convenient to remove the lid and empty the organisms from the box.

[0006] Preferably, the quick-release connection mechanism includes a connecting seat, a fastening seat, and a locking nut. The connecting seat is fixed to the upper parts of both sides of the trapping box. The connecting seat has a locking screw that can rotate along a vertical plane. The fastening seat has a clearance notch. When the locking screw rotates into the clearance notch, the fastening seat and the connecting seat are locked together by the locking nut. Simply loosen the locking nut and rotate the locking screw to disengage it from the clearance notch, and the fastening seat will be released from the connecting seat, allowing the box cover to be removed directly. Rotate the locking screw back into the clearance notch and tighten the locking nut to secure the fastening seat and the connecting seat together, thus fixing the box cover to the trapping box. The quick-release connection mechanism of this invention has a simple structure and is easy to use, making the disassembly and assembly of the box cover very convenient.

[0007] Preferably, the connecting seat is a U-shaped seat, and a connecting shaft is rotatably connected inside the connecting seat, with the locking screw fixed on the connecting shaft.

[0008] Preferably, the escape-proof door has rotating shafts on both upper sides, which are rotatably connected to the partition. The rotation diameter of the escape-proof door is greater than the height of the trapping channel. The escape-proof door is tilted; due to its own weight, because the rotation diameter is greater than the height of the trapping channel, the bottom of the escape-proof door is blocked by the bottom of the trapping channel and cannot rotate outwards, so it can only rotate inwards. Under external force, the escape-proof door overcomes its own weight and rotates inwards, opening the trap and allowing marine benthic organisms to enter the trapping box. This structural design is simple, and once marine benthic organisms enter the trapping box, they cannot escape.

[0009] Preferably, the bottom side of the trapping box is fixed with an anti-sinking plate, and the outer side of the anti-sinking plate is provided with a guide slope. The anti-sinking plate serves two purposes: first, it provides stability, allowing the trapping box to be placed stably; second, it increases the contact area, preventing the trapping box from sinking into the silt or sand on the seabed and blocking or covering the trapping opening; the guide slope is an inclined surface, which facilitates marine benthic organisms climbing onto the anti-sinking plate to reach the trapping opening.

[0010] Preferably, the bait tube includes a tube body and a cap. The tube body is fixed to the box cap and extends into the trapping box. The upper end of the tube body is open. The cap is threadedly connected to the tube body. The bait hole is located on the surface of the bait tube. After unscrewing the cap, bait can be directly added to the tube body, making it convenient to use.

[0011] Preferably, a guide plate made of a soft, elastic material is fixed to the partition located at the guide opening, and the gap between the guide plates forms a guide channel. The soft, elastic material can be a rubber sheet or a silicone sheet, and the guide plate serves a guiding function.

[0012] Preferably, the guide channel has a constricted structure facing the inner corner of the trapping box.

[0013] Preferably, the bottom surface of the box cover is provided with a positioning side plate, which is in contact with and fits against the inner wall of the trapping box.

[0014] Preferably, a rope loop is fixed to the top surface of the box lid. The rope loop is used to tie ropes to facilitate the deployment and retrieval of the present invention.

[0015] Therefore, the present invention has the following beneficial effects:

[0016] (1) Marine benthic organisms cannot escape once they enter the trap box;

[0017] (2) It has a central cavity, which can prevent marine benthic organisms from gathering around the bait tube and facilitates the centralized discharge of marine benthic organisms;

[0018] (3) Marine benthic organisms are less likely to get stuck in the trapping channel, and the trapping time is longer;

[0019] (4) It is very convenient to place bait and remove marine benthic organisms from the trap. Attached Figure Description

[0020] Figure 1 This is the front view of the present invention.

[0021] Figure 2 yes Figure 1 Cross-sectional view.

[0022] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0023] Figure 4 This is the front view of the quick-release connection mechanism.

[0024] Figure 5 yes Figure 2 Enlarged view of section B in the middle.

[0025] Figure 6 This is a schematic diagram showing the connection of the trap box, partitions, and anti-trapping plates.

[0026] In the diagram: 1. Trapping box; 2. Bait tube; 3. Box cover; 4. Flow hole; 5. Bait hole; 6. Trapping opening; 7. Partition; 8. Top sealing plate; 9. Trapping channel; 10. Anti-escape door; 11. Centralized cavity; 12. Guide opening; 13. Connecting seat; 14. Fastening seat; 15. Locking nut; 16. Locking screw; 17. Clearance notch; 18. Connecting shaft; 19. Rotating shaft; 20. Anti-sinking plate; 21. Guide slope; 22. Tube body; 23. Tube cover; 24. Guide plate; 25. Guide channel; 26. Positioning side plate; 27. Rope ring. Detailed Implementation

[0027] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0028] like Figure 1 , Figure 2 The illustrated marine benthic organism trapping device includes a trapping box 1, a bait tube 2, and a box cover 3. Anti-sinking plates 20 are fixed to the bottom of the four sides of the trapping box. Guide slopes 21 are provided on the outer sides of the anti-sinking plates. The top of the trapping box is open, and flow holes 4 are provided on the surface of the trapping box. Positioning side plates 26 are provided on the bottom surface of the box cover, and these side plates are in contact with and fitted against the inner wall of the trapping box. A rope loop 27 is fixed to the top surface of the box cover. The box cover is detachably connected to the top of the trapping box via a quick-release connection mechanism (such as...). Figure 3 , Figure 4(As shown) includes a connecting seat 13, a fastening seat 14, and a locking nut 15. The connecting seat is fixed to the upper part of both sides of the trapping box. The connecting seat is a U-shaped seat. A connecting shaft 18 is rotatably connected inside the connecting seat. A locking screw 16 is fixed on the connecting shaft. The fastening seat has a clearance notch 17. When the locking screw rotates into the clearance notch, the fastening seat and the connecting seat are locked by the locking nut. The bait tube includes a tube body 22 and a tube cap 23. The tube body is fixed on the box cap and extends into the trapping box. The upper end of the tube body is open. The tube cap is threaded to the tube body. The surface of the tube body has bait holes 5. The side of the trapping box has a trapping opening 6. Inside the trapping box, there are partitions 7 on both sides opposite to the trapping opening. There is an upper sealing plate 8 between the partitions. The upper sealing plate, partitions, and bottom of the trapping box form a trapping channel 9. There is an escape door 10 that rotates in one direction inward in the trapping channel. There are rotating shafts 19 on the upper part of both sides of the escape door (as shown). Figure 5 As shown), the rotating shaft is rotatably connected to the partition, the rotation diameter of the escape-proof door is greater than the height of the trapping channel, the inner corner of the trapping box, the partitions on both sides of the inner corner of the trapping box and the box cover together form a concentrated cavity 11, and the opening between the partitions on both sides of the inner corner forms a guide opening 12 (as shown). Figure 6 As shown, a guide plate 24 made of soft elastic material is fixed on the partition at the guide port. The gap between the guide plates forms a guide channel 25, which has a constricted structure towards the inner corner of the trapping box.

[0029] The method of using this invention is as follows: unscrew the cap, put bait into the tube, screw the cap back on, and put the entire invention into the sea (choose a flat seabed). After sinking to the seabed, marine benthic organisms, attracted by the bait, will climb onto the trapping plate and enter the trapping channel. After pushing open the escape door, they will enter the trapping box. The escape door cannot be opened outward, so once the marine benthic organisms enter the trapping box, they cannot escape. The marine benthic organisms in the trapping box will then seek a path of resistance (obstacle) to escape. Driven by this instinct, the marine benthic organisms will enter the concentration chamber through the guide channel of least resistance and try to escape from there. Therefore, they will be trapped in the concentration chamber. After trapping for a period of time, lift the invention, remove the box cap, and pour out the marine benthic organisms from the trapping box.

[0030] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Other variations and modifications are possible without departing from the technical solutions described in the claims.

Claims

1. A marine benthic organism trapping device, characterized in that, The device includes a trap box (1), a bait tube (2), and a lid (3). The top of the trap box is open, and the surface of the trap box is provided with a flow hole (4). The lid is detachably connected to the top of the trap box via a quick-release connection mechanism. The bait tube is fixed to the lid and extends into the trap box. The surface of the bait tube is provided with a bait hole (5). The side of the trap box is provided with a trap opening (6). Inside the trap box, there are partitions (7) located on opposite sides of the trap opening. There is an upper sealing plate (8) between the partitions. The upper sealing plate, the partitions, and the bottom of the trap box together form a trap channel (9). The trap channel is provided with an escape door (10) that rotates in one direction inward. The inner corner of the trap box, the partitions on both sides of the inner corner of the trap box, and the lid together form a concentrated cavity (11). The opening between the partitions on both sides of the inner corner forms a guide opening (12). The quick-release connection mechanism includes a connecting seat (13), a fastening seat (14), and a locking nut (15). The connecting seat is fixed on the upper part of both sides of the trapping box. The connecting seat is provided with a locking screw (16) that can rotate along a vertical plane. The fastening seat is provided with a clearance notch (17). When the locking screw rotates into the clearance notch, the fastening seat and the connecting seat are locked together by the locking nut. The connecting seat is a U-shaped seat. A connecting shaft (18) is rotatably connected inside the connecting seat. The locking screw is fixed on the connecting shaft. The bottom side of the trap box is fixed with an anti-sink plate (20), and the outer side of the anti-sink plate is provided with a guide slope (21). The bait tube includes a tube body (22) and a tube cap (23). The tube body is fixed on the box cap and extends into the trapping box. The upper end of the tube body is open. The tube cap is threadedly connected to the tube body. The bait hole is set on the surface of the bait tube.

2. The marine benthic organism trapping device according to claim 1, characterized in that, The escape-proof door is provided with a rotating shaft (19) on the upper part of both sides. The rotating shaft is rotatably connected to the partition. The rotation diameter of the escape-proof door is greater than the height of the trapping channel.

3. The marine benthic organism trapping device according to claim 1, characterized in that, A guide plate (24) made of soft elastic material is fixed on the partition located at the guide port, and the gap between the guide plates forms a guide channel (25).

4. The marine benthic organism trapping device according to claim 3, characterized in that, The guide channel has a constricted structure towards the inner corner of the trapping box.

5. The marine benthic organism trapping device according to claim 1, characterized in that, The bottom surface of the box cover is provided with a positioning side plate (26), which is in contact with and fits against the inner wall of the trapping box.

6. A marine benthic organism trapping device according to claim 1 or 5, characterized in that, A rope loop (27) is fixed to the top surface of the box cover.

Images