A new device for collecting and catching juvenile fish fry

Abstract

The utility model discloses a novel young fish fry seed gathers and captures device, including the casing, its characterized in that: the casing upper end is equipped with the feeding opening, and the bait filter drum is arranged in the casing, and the buffer board is arranged in the casing, and the inside rotation is connected with the deflector in the casing, and the left and right ends of deflector all are equipped with the connecting shaft, and one end of connecting shaft is equipped with the gear, and the upper end rotation is connected with the threaded rod in the casing, and the outside screw thread connection of threaded rod has the U type rod, and the left and right ends of U type rod all are equipped with the connecting rod, and the lower end of connecting rod is equipped with the rack, and the upper end of casing is equipped with the first limit slip mouth, and the inside sliding connection of first limit slip mouth has the filter baffle. The utility model can gather and catch the young fish fry of the elastic coating fish, not only can save manpower, can improve the gathering and catching effect, and can also reduce the harm to the young fish fry when gathering and catching.

Description

Technical Field

[0001] This utility model relates to the field of juvenile fish fry harvesting technology, and in particular to a novel juvenile fish fry harvesting device. Background Technology

[0002] Mudskippers, a typical amphibian belonging to the family Mudskipperidae in the order Perciformes, exhibit unique ecological habits in their juveniles: they possess the ability to jump even at a body length of only 2-3 mm, and can move rapidly across the mudflat surface through the coordinated movement of their pectoral and pelvic fins. They can also briefly leave the water using their skin and tail for assisted respiration. In the artificial breeding and ecological research of mudskipper fry, precise and efficient harvesting techniques are crucial for ensuring fry survival rates and maintaining population genetic diversity. Current techniques typically involve using small hand nets for harvesting. These nets usually consist of a semi-circular frame with a diameter of 15-20 cm and a nylon net with a mesh count of 40-60. During operation, the operator must crouch on the mudflat surface, visually track the mudskipper, and then quickly swing the net to capture it. This method is not only laborious and time-consuming when harvesting juvenile mudskippers, but also yields poor harvesting results. Utility Model Content

[0003] The purpose of this invention is to provide a novel juvenile fish fry harvesting device that facilitates the harvesting of mudskipper fry, saving manpower, improving harvesting efficiency, and reducing damage to juvenile fish fry during harvesting.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution: A novel juvenile fish fry harvesting device includes a shell, a feeding port on one side of the upper end of the shell, a feed filter cylinder connected to the feeding port at the upper end of the shell, a buffer plate inclined from bottom to top at the lower end of the shell near the feed filter cylinder, and multiple guide plates arranged at equal intervals and in a stepped manner rotatably connected to the buffer plate inside the shell, each guide plate inclined from bottom to top, and connecting shafts rotatably connected to the shell at both ends of each guide plate. Each connecting shaft has a gear extending from the end away from the corresponding guide plate. The upper end of the housing is rotatably connected to a vertically arranged threaded rod near the bait filter cylinder. The outer side of the threaded rod is threaded with a U-shaped rod that is slidably connected to the housing. Both ends of the U-shaped rod are horizontally connected to connecting rods. The lower end of each connecting rod is provided with a rack that meshes with the corresponding gear near each gear. The upper end of the housing is provided with a first limiting slide opening on the side away from the bait filter cylinder. A detachable filter baffle is slidably connected inside the first limiting slide opening.

[0005] By adopting the above technical solution, during use, the shell is placed in an area with a high concentration of mudskippers. Feed is added to the feed filter cartridge through the feeding port. The feed falls through the holes in the feed filter cartridge, attracting mudskipper fry. A buffer plate guides the fry naturally into the shell, preventing mechanical damage. Once inside, the fry climb onto the guide plates, where the water flow is slowed and gently flows through the gaps between the guide plates into the shell. This guides the fry into the shell through the gaps between the guide plates, thus preventing larger mudskippers from entering. The filter baffle isolates and blocks the fry from the shell, thus preventing them from escaping. This allows for convenient and timely collection of the fry. During collection, simply pull the filter baffle out of the first limiting slide to empty the fry. Rotating the threaded rod causes the U-shaped rod to slide relative to the shell, moving the connecting rod downwards, which in turn moves the rack. The rack drives the gear to rotate, which in turn rotates the connecting shaft, causing the guide plates to rotate. Adjusting the angle and spacing between the guide plates allows for the adjustment of the size of the fry collected as needed.

[0006] A further feature of this invention is that the feed port is internally threaded with an end cap.

[0007] A further feature of this invention is that the upper end of the buffer plate and each guide plate is provided with several protrusions at equal intervals.

[0008] A further feature of this invention is that the protrusion, the buffer plate, and the guide plate are all made of silicone. A further feature of this invention is that: the upper end of the housing has multiple second limiting slides arranged at equal intervals near the first limiting slide, and each second limiting slide has a detachable sieve plate slidably connected inside, and each sieve plate has a sieve hole at one end near the filter baffle, and the diameter of the sieve hole gradually increases from near the filter plate to away from the filter baffle.

[0009] A further feature of this invention is that a plurality of ground anchors are provided at equal intervals at the lower end of the housing, and a handle is provided vertically on the outer side of the housing.

[0010] A further feature of this invention is that a knob is provided at the upper end of the threaded rod.

[0011] In summary, this utility model has the following beneficial effects: Firstly, it facilitates the harvesting of juvenile fish fry. The bait filter can be easily filled with bait to lure the juvenile fish fry. The buffer plate can easily guide the juvenile fish fry to enter the shell naturally, while also guiding them to climb onto the guide plate. It can also prevent the shell from scratching the juvenile fish fry. The guide plate can slow down the water flow speed, and the gaps between the guide plates can also guide the water flow slowly through the gaps, thus guiding the juvenile fish fry through the gaps and into the inside of the shell. Large mudskippers are isolated outside the shell. The filter plate can also block them, thus completing the harvesting of juvenile fish fry. People only need to collect the juvenile fish fry regularly. The buffer plate and guide plate are both made of silicone to prevent scratching the juvenile fish fry. Secondly, by rotating the threaded rod, the rack moves up and down, and the rack drives the gear to rotate, which in turn drives the guide plate to rotate, adjusting the angle of the guide plate and thus adjusting the gap between the guide plates. This allows for adjusting the size of the juvenile fish fry to be harvested as needed. Thirdly, the sieve holes on the sieve plate allow for the screening of the captured juvenile fish fry, thus classifying them according to different sizes and facilitating better breeding and management of the juvenile fish fry. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial sectional view of the present invention; Figure 3 This demonstrates the first limiting slide and the second limiting slide of this utility model; Figure 4 This demonstrates the positional relationship between the sieve plate and the filter baffle of this utility model.

[0013] In the diagram: 1. Shell; 2. Feed inlet; 3. Feed filter cylinder; 4. End cap; 5. Buffer plate; 6. Guide plate; 7. Connecting shaft; 8. Gear; 9. Protrusion; 10. Threaded rod; 11. Knob; 12. U-shaped rod; 13. Connecting rod; 14. Rack; 15. First limiting slide; 16. Filter baffle; 17. Second limiting slide; 18. Screen plate; 19. Screen hole; 20. Ground anchor; 21. Handle. Detailed Implementation

[0014] The present invention will be further described in detail below with reference to the accompanying drawings.

[0015] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0016] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0017] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0018] Example, refer to Figure 1-4 A novel juvenile fish fry harvesting device includes a shell 1. A feeding port 2 is provided in the middle of the front side of the upper end of the shell 1. A feed filter 3 connected to the feeding port 2 is provided in the middle of the front side of the upper end of the shell 1. An end cap 4 is threadedly connected inside the feeding port 2. Four vertically arranged ground anchors 20 are provided at equal intervals at the lower end of the shell 1. A handle 21 is vertically arranged between the middle of the left and right ends of the shell 1 to facilitate the stable fixing of the shell 1.

[0019] A buffer plate 5, inclined upwards, is provided on the front side of the lower end inside the shell 1. This guides the fry to crawl naturally into the shell 1. Three guide plates 6, arranged in a stepped manner and equidistant from the buffer plate 5, are rotatably connected to the inside of the shell 1. Each guide plate 6 is inclined upwards, and gaps are formed between the guide plates 6, allowing the fry to crawl into the shell 1 through the gaps, thus keeping the large mudskippers out of the shell 1. Several protrusions 9 are provided at equal intervals on the upper end of the buffer plate 5 and the upper end of each guide plate 6. The buffer plate 5, guide plates 6, and protrusions 9 are all made of silicone, which can prevent scratching the fry and facilitate the fry to enter the shell 1.

[0020] Each guide plate 6 has a connecting shaft 7 that extends through the housing 1 and is rotatably connected to it at both ends. Each connecting shaft 7 has a gear 8 at the outer end away from the corresponding guide plate 6. A vertically arranged threaded rod 10 is rotatably connected to the upper end of the housing 1 near the feeding port 2. A knob 11 is provided at the upper end of the threaded rod 10. A U-shaped rod 12 that is slidably connected to the housing 1 is threaded to the outer side of the threaded rod 10. A connecting rod 13 is horizontally arranged on the lower side of both ends of the U-shaped rod 12. A rack 14 that meshes with the corresponding gear 8 is vertically arranged near the lower end of each connecting rod 13 near each gear 8. The size of the fry can be adjusted as needed.

[0021] A first limiting slide 15 is provided on the rear side of the upper end of the shell 1. A detachable filter baffle 16 is provided inside the first limiting slide 15. Two second limiting slides 17 are provided at equal intervals near the first limiting slide 15 at the upper end of the shell 1. A detachable sieve plate 18 is slidably connected inside each second limiting slide 17. Several sieve holes 19 are provided at equal intervals at the rear end of each piston plate. The diameter of the sieve holes 19 gradually increases from back to front, which can facilitate the sieving and classification of the captured fish fry according to size, thereby better managing the fry farming.

[0022] Usage: When in use, tap handle 21 to insert the anchor 20 into the soil, thus placing the shell 1 in an area densely populated with mudskippers. Add bait to the feed filter 3 through the feed inlet 2, then screw the end cap 4 into the feed inlet 2. The bait falls through the holes in the feed filter 3, attracting mudskipper fry. The buffer plate 5 guides the fry naturally into the shell 1, preventing mechanical damage. Once inside the shell 1, the fry climb onto the guide plate 6 from the buffer plate 5. The water flow is slowed by the guide plate 6, flowing smoothly through the gaps between the guide plates 6. The fry are guided into the interior of the shell 1 through the gaps between the guide plates 6, isolating the large mudskippers. After entering the shell 1, the fry are guided by the water flow and pass through the sieve holes 19 on the sieve plate 18 inside the shell 1. The sieve plate 18 divides the interior of the shell 1 into different spaces, thus separating the fry into different sizes. After being blocked by the filter baffle 16, the fry are harvested. When collecting, the filter plate is pulled out from the first limiting slide 15 in sequence, and the sieve plate 18 is pulled out from the second limiting opening in sequence, so that the separated fry can be collected from the shell 1.

[0023] The guide plate 6 is made of silicone, which can prevent the juvenile fish fry from being scratched and prevent them from escaping from the shell 1. This makes it convenient to collect the juvenile fish fry captured in the shell 1 at regular intervals, saving manpower. The protrusion 9 makes it easier for the juvenile fish fry to crawl. By turning the knob 11, the threaded rod 10 is rotated, which causes the U-shaped rod 12 to slide relative to the shell 1, which causes the connecting rod 13 to move downward, which causes the rack 14 to move. The rack 14 drives the gear 8 to rotate, which drives the connecting shaft 7 to rotate, thereby causing the guide plate 6 to rotate. By adjusting the angle and changing the distance between the guide plates 6, the size of the captured juvenile fish fry can be adjusted as needed.

[0024] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A novel juvenile fish fry harvesting device, comprising a shell (1), characterized in that: A feeding port (2) is provided on one side of the upper end of the shell (1). A feed filter cylinder (3) connected to the feeding port (2) is provided at the upper end of the shell (1). A buffer plate (5) is provided at the lower end of the shell (1) near the feed filter cylinder (3) and is inclined from bottom to top. Multiple guide plates (6) are rotatably connected to the shell (1) near the buffer plate (5) and are arranged at equal intervals in a stepped manner. Each guide plate (6) is inclined from bottom to top. Each guide plate (6) has a connecting shaft (7) rotatably connected to the shell (1) at both the left and right ends. Each connecting shaft (7) has a gear (8) extending out of the housing (1) at one end away from the corresponding guide plate (6). The upper end of the housing (1) is rotatably connected to a vertically arranged threaded rod (10) near the bait filter cylinder (3). The outer side of the threaded rod (10) is threadedly connected to a U-shaped rod (12) that is slidably connected to the housing (1). Both ends of the U-shaped rod (12) are horizontally arranged with connecting rods (13). The lower end of each connecting rod (13) is provided with a rack (14) that meshes with the corresponding gear (8) near each gear (8). The upper end of the housing (1) is provided with a first limiting slide (15) on the side away from the bait filter cylinder (3). The first limiting slide (15) is slidably connected to a detachable filter baffle (16).

2. The novel juvenile fish fry harvesting device according to claim 1, characterized in that: The feed port (2) is internally threaded with an end cap (4).

3. The novel juvenile fish fry harvesting device according to claim 1, characterized in that: The upper ends of the buffer plate (5) and each guide plate (6) are provided with several protrusions (9) at equal intervals.

4. The novel juvenile fish fry harvesting device according to claim 3, characterized in that: The bump (9), the buffer plate (5) and the guide plate (6) are all made of silicone.

5. The novel juvenile fish fry harvesting device according to claim 1, characterized in that: The upper end of the housing (1) has multiple second limiting slides (17) arranged at equal intervals near the first limiting slide (15). Each second limiting slide (17) has a detachable sieve plate (18) slidably connected inside. Each sieve plate (18) has a sieve hole (19) at one end near the filter baffle (16). The diameter of the sieve hole (19) gradually increases from near the filter baffle to away from the filter baffle (16).

6. The novel juvenile fish fry harvesting device according to claim 1, characterized in that: The lower end of the housing (1) is provided with multiple ground anchors (20) at equal intervals, and the outer side of the housing (1) is provided with a handle (21) vertically.

7. The novel juvenile fish fry harvesting device according to claim 1, characterized in that: A knob (11) is provided at the upper end of the threaded rod (10).

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