Portable fish fry proofing and catching device

Abstract

The utility model belongs to the technical field of weever growth monitoring, and particularly relates to a portable fry proofing and catching device. The fishing device comprises a telescopic rod and a fishing net, the fishing net is of a quadrilateral structure, a plurality of buoys are evenly fixed to the upper side edge of the fishing net, and a plurality of lead weights are evenly fixed to the lower side edge of the fishing net; the four corners of the fishing net are each fixedly provided with a fixing rope in an extending mode, and the fishing net is fixed between the tops of the two telescopic rods through the fixing ropes. The micropterus salmoides fry sampling fishing net is simple in structure, low in fishing cost, convenient to carry and high in operability, an operator can give an initial speed to the fishing net through the telescopic rod to help the fishing net sink into water quickly during sampling fishing, the escape time of micropterus salmoides fries is shortened, sampling fishing can be completed without cooperation of other related equipment, and the working efficiency is improved. And the micropterus salmonides with high speed can be caught easily, and the proofing effect of the growth health condition of the micropterus salmonides is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the technical field of bass growth monitoring, specifically relating to a portable fish fry sampling and harvesting device. Background Technology

[0002] There are many types of bass, the most common being four: sea bass, Songjiang bass, largemouth bass, and river bass. Largemouth bass, also known as California bass, is increasingly prone to disease due to the increased farming area, size, and density. Disease control is becoming increasingly difficult. Furthermore, as a lower-level aquatic fish, California bass quickly swims to the surface to grab food and then rapidly returns to the water, making it difficult for farmers to directly observe their growth and health. Additionally, California bass are congenitally diabetic, and starch is inevitably added to their feed, which can damage their livers. Therefore, regular dissection and sampling of California bass in ponds are necessary to assess their health.

[0003] Currently, the main fishing gear for California bass is the dip net and the disc-type hand-thrown net. Dip nets are primarily used when California bass fry are 2-3 cm in size. At this stage, the fry congregate near the feeding platform, allowing for quick and safe capture. However, as the fry grow, California bass trained to saturate themselves with a full-feeding method reach over 5 cm and only surface to feed. Dip nets become much more difficult to use, and their disadvantages become apparent. Furthermore, the small opening of the dip net, combined with the fast swimming speed of the fry, often requires multiple dips to catch them. Repeated dip net use can also frighten the fry, affecting feeding. Disc nets, on the other hand, are used for catching adult California bass. Disk-type hand-thrown nets are also unsuitable for use during the fry stage of largemouth bass, mainly for the following reasons: First, in order to increase the natural sinking speed of the net in the water, the mesh design of disc-type hand-thrown nets is generally large, which makes it easy for the heads of largemouth bass fry to get into the mesh during sampling and catching. When pulling the net, the largemouth bass fry are stressed, and their dorsal and pectoral fins open and get stuck in the mesh, causing bleeding. Often, it is necessary to cut the net with scissors to free the fry in a short time, which causes great damage to the fry. Second, the height of disc-type hand-thrown nets is mostly over 1.5 meters, and the diameter of their unfolded circle is generally over 3 meters. If too many largemouth bass fry are caught during sampling and catching in the feeding area, it will cause more economic losses to fish farmers because of the damage to the fry.

[0004] Existing technologies include research on sampling nets that easily damage fish fry, such as patent applications CN217884842U (a grading and catching device for adult fish in bass fry rearing), CN213044821U (a fry catching device), and CN203233918U (an effective fry catching device). These devices use catching frames or net cages to catch fry, solving the problems associated with landing nets and disc-type hand-thrown nets. However, existing frame-type or net-cage-type catching devices are bulky and difficult to carry. Furthermore, they require other related equipment to complete the fry catching process, resulting in low operability. Also, the large number of fry caught makes it difficult to effectively sample and monitor the health status of California bass. Therefore, a new technical solution is needed to address these problems. Utility Model Content

[0005] The purpose of this utility model is to provide a portable fish fry sampling and fishing device to solve the problems mentioned in the background art, such as the large size of the current frame or net cage fishing devices, which are difficult to carry, and the need to cooperate with other related equipment to complete the fish fry fishing, resulting in high fishing costs, low operability, and difficulty in achieving the sampling effect of detecting the growth and health status of California bass.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a portable fish fry sampling and catching device, comprising a telescopic rod and a catching net fixed to the top of the telescopic rod. The catching net has a quadrilateral structure, with several floats evenly fixed to the upper side of the catching net and several sinkers evenly fixed to the lower side of the catching net. The distance between the floats is equal to the distance between the sinkers. A fixing rope extends from each of the four corners of the catching net and is fixed between the tops of the two telescopic rods through the fixing rope.

[0007] Furthermore, the length of the fishing net is 2 to 3 meters, the width of the fishing net is 1.5 to 2.5 meters, the distance between the several floats is 8 to 12 centimeters, and the distance between the several sinkers is 8 to 12 centimeters.

[0008] Furthermore, the telescopic rod includes at least two movable rods with diameters gradually decreasing from bottom to top. The upper movable rod is telescopically inserted into the interior of the lower movable rod. The inner top of each movable rod is provided with a thread A, and the outer bottom of each movable rod is provided with a thread B that mates with thread A. The inner top of the lower movable rod is threadedly connected to the outer bottom of the upper movable rod through the mating threads A and B. The lowermost movable rod of the telescopic rod is fitted with an anti-slip rubber sleeve. The top of the uppermost movable rod of the telescopic rod is fixed with an anti-detachment screw and is fixedly connected to the fishing net through the anti-detachment screw and a fixing rope.

[0009] Furthermore, the bottom thread of the anti-loosening screw is connected to the inner top of the uppermost movable rod, and its diameter is larger than the diameter of the uppermost movable rod.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] 1. This utility model adopts a combination of a quadrilateral fishing net and a telescopic rod, which allows the operator to give the fishing net an initial speed during sampling and fishing, helping the fishing net to sink quickly into the water, reducing the escape time of California bass fry. It also effectively simplifies the structure of the sampling and fishing device, making it easier to carry. It can complete the sampling and fishing of California bass fry without the need for other related equipment, effectively reducing fishing costs and improving the operability of the sampling and fishing device. By utilizing the buoyancy of the float and the gravity of the sinker, the net surface can be opened quickly and as wide as possible, which is conducive to catching fast-swimming California bass and ensures the sampling effect of the healthy growth of California bass.

[0012] 2. This utility model uses buoyancy and lead weights that are fixed at equal distances on the upper and lower sides of the fishing net to make the net surface more evenly stressed, which is conducive to the opening of the fishing net and effectively improves the opening efficiency of the fishing net. The fishing net with a quadrilateral structure makes it easier to catch fast-swimming California bass. Moreover, the fishing net with a small mesh density can reduce the damage to California bass and ensure the sampling effect of the growth and health of California bass.

[0013] 3. This utility model uses at least two sections of movable rods as telescopic rods, allowing the fishing net to adjust the length of the telescopic rods according to the depth of the fishpond, effectively improving the practicality of the sampling and fishing device. The threaded connection makes the telescopic rods more flexible and easy to carry. By connecting an anti-loosening screw with a diameter larger than the movable rod to the top of the uppermost section of the movable rod, the fixing rope can be effectively prevented from slipping off the telescopic rod, effectively improving the stability of the fishing net and ensuring the fishing effect of the sampling and fishing device. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the telescopic rod of this utility model in the retracted state (taking a three-section movable telescopic rod as an example).

[0015] Figure 2 This is a schematic diagram of the telescopic rod of this utility model in its extended state (taking a three-section movable telescopic rod as an example).

[0016] Figure 3 This is a schematic diagram of the structure of the fishing net of this utility model in its unfixed and open state;

[0017] Figure 4This is a schematic diagram of the structure of a single telescopic rod of this utility model in the retracted state (taking a three-section telescopic rod as an example).

[0018] Figure 5 This is a structural diagram of a single telescopic rod of this utility model in its extended state (taking a three-section telescopic rod as an example).

[0019] Figure 6 This is a schematic diagram of the structure of a single movable rod of this utility model.

[0020] The components include: 1. Telescopic pole; 101. Movable pole; 2. Fishing net; 3. Float; 4. Sinker; 5. Fixing rope; 6. Thread A; 7. Thread B; 8. Anti-slip rubber sleeve; 9. Anti-loosening screw. Detailed Implementation

[0021] The following embodiments are used to further illustrate the content of this utility model, and do not limit the application of this utility model.

[0022] Please see Figures 1-6 A portable fish fry sampling and catching device includes a telescopic pole 1 for providing initial speed to the catching net 2 and for easy gripping by the operator, and a catching net 2 fixed to the top of the telescopic pole 1 for catching California bass. The catching net 2 has a quadrilateral structure. Several floats 3 are evenly fixed to the upper side of the catching net 2 to provide buoyancy to the catching net 2. Several sinkers 4 are evenly fixed to the lower side of the catching net 2 to provide gravity to the catching net 2, so that the catching net 2 can sink to the bottom of the water quickly. A fixing rope 5 is extended and fixed to each of the four corners of the catching net 2 to fix the catching net 2 to the telescopic pole 1 and fixed between the tops of the two telescopic poles 1 through the fixing rope 5.

[0023] Please see Figures 1-3 The length of the fishing net 2 is 2 to 3 meters, and the width of the fishing net 2 is 1.5 to 2.5 meters. The distance between several floats 3 fixed on the long side of the fishing net 2 is equal to the distance between several sinkers 4 fixed on the long side of the fishing net 2. The distance between several floats 3 is 8 to 12 centimeters, and the distance between several sinkers 4 is 8 to 12 centimeters.

[0024] Please see Figures 1-2 and Figures 4-6 The telescopic rod 1 includes at least two movable rods 101 whose diameter gradually decreases from bottom to top and are used to control the length of the telescopic rod 1 (e.g., Figure 1 , Figure 2 , Figure 4 and Figure 5The embodiment shown uses three sections of movable rods 101 with diameters gradually decreasing from bottom to top as telescopic rods 1, and the length of each section of movable rod 101 can be set to 50-70 cm. The upper section of movable rod 101 extends and retracts inside the lower section of movable rod 101. The inner top of each section of movable rod 101 is provided with a thread A6 for fixing, and the outer bottom of each section of movable rod is provided with a thread B7 for fixing. The thread B7 is configured to cooperate with the thread A6. The inner top of the lower section of movable rod 101 is connected to the outer bottom of the upper section of movable rod 101 by a sleeve-type thread through the cooperating threads A6 and B7.

[0025] The bottommost section of the telescopic pole 1, the movable pole 101, is fitted with an anti-slip rubber sleeve 8 to prevent the operator from slipping while holding it; the top of the topmost section of the telescopic pole 1, the movable pole 101, is fixed with an anti-detachment screw 9 for fixing the fixing rope 5, and is fixedly connected to the fishing net 2 through the anti-detachment screw 9 and the fixing rope 5.

[0026] The bottom thread of the anti-detachment screw 9 is connected to the inner top of the top section of the movable rod 101, and its top diameter is larger than the diameter of the top section of the movable rod 101. This is used to prevent the fixing rope 5 of the fishing net 2 from slipping off the telescopic rod 1 and to increase the stability of the fishing net 2.

[0027] The working principle and usage process of this utility model are as follows: Figures 1-6 As shown, after the portable fish fry sampling and catching device is assembled, when not in use, the upper section of the telescopic rod 1 1 is sequentially fitted into the lower section of the telescopic rod 1 1 and finally placed inside the lowermost section of the telescopic rod 1 1. At this time, the telescopic rod 1 is in the retracted state (e.g., Figure 1 and Figure 4 (As shown), and the fishing net 2 is also in a folded state;

[0028] When it is necessary to monitor the growth and health of California bass, the operator must first select the appropriate number of movable rod sections 101 according to the depth of the fishpond and assemble them into two telescopic rods 1 of the same length (e.g., Figure 1 and Figure 4 The diagram shows the selection of a three-section movable rod 101 as the body of the two telescopic rods 1. First, the middle section of the movable rod 101 is fitted inside the bottommost section, and then the topmost section is fitted inside the middle section, resulting in a telescopic rod 1 with three sections of movable rod 101. Anti-detachment screws 9 are then installed on the tops of both telescopic rods 1. Simultaneously, the folded fishing net 2 is unfolded, and the fixing ropes 5 at its four corners are pulled out. Two fixing ropes 5 on one wide side are fixed to the anti-detachment screw 9 on the top of one telescopic rod 1, and two fixing ropes 5 on the other wide side are fixed to the anti-detachment screw 9 on the top of the other telescopic rod 1, forming a net-like structure between the two telescopic rods 1 (e.g., ...). Figure 1 and Figure 2 (As shown), then the upper movable rod 101 of each of the two telescopic rods 1 is extended from the lower movable rod 101 in sequence and rotated so that the upper movable rod 101 can be threadedly fixedly connected to the lower movable rod 101. At this time, both telescopic rods 1 are in the extended state (as shown). Figure 2 and Figure 5 As shown in the diagram, the two extended telescopic poles 1 are then simultaneously placed in the water of the fishpond. At this time, the net-shaped fishing net 2 will quickly sink into the water as the telescopic poles 1 enter the water. The upper part of the net-shaped fishing net 2 will float on the water surface due to the buoyancy of the float 3, while the lower part will quickly sink to the bottom due to the gravity of the sinker 4, forming a fishing net for catching California bass fry. This allows the California bass to be caught quickly without damage, ensuring the catching effect of the California bass's growth and health.

Claims

1. A portable fish fry sampling and catching device, comprising a telescopic pole and a catching net fixed to the top of the telescopic pole, characterized in that, The fishing net has a quadrilateral structure. Several floats are evenly fixed on the upper side of the fishing net, and several sinkers are evenly fixed on the lower side of the fishing net. A fixing rope extends from each of the four corners of the fishing net and is fixed between the tops of two telescopic poles through the fixing rope.

2. The portable fish fry sampling and harvesting device according to claim 1, characterized in that, The distance between the floats is equal to the distance between the sinkers.

3. The portable fish fry sampling and harvesting device according to claim 2, characterized in that, The distance between the floats is 8 to 12 centimeters, and the distance between the sinkers is 8 to 12 centimeters.

4. The portable fish fry sampling and harvesting device according to claim 1, characterized in that, The fishing net is 2 to 3 meters long and 1.5 to 2.5 meters wide.

5. The portable fish fry sampling and harvesting device according to claim 1, characterized in that, The telescopic rod includes at least two sections of movable rods with diameters gradually decreasing from bottom to top. The upper section of the movable rod extends and retracts inside the lower section of the movable rod. The inner top of each section of the movable rod is provided with a thread A, and the outer bottom of each section of the movable rod is provided with a thread B that mates with thread A.

6. The portable fish fry sampling and harvesting device according to claim 5, characterized in that, The inner top of the movable rod described in the next section is connected to the outer bottom of the movable rod in the previous section by a threaded connection through mating threads A and B.

7. A portable fish fry sampling and harvesting device according to claim 6, characterized in that, The movable rod at the bottom of the telescopic rod is fitted with an anti-slip rubber sleeve.

8. A portable fish fry sampling and harvesting device according to claim 7, characterized in that, The top of the movable rod in the uppermost section of the telescopic pole is fixed with an anti-detachment screw and is fixedly connected to the fishing net through the anti-detachment screw and the fixing rope.

9. A portable fish fry sampling and harvesting device according to claim 8, characterized in that, The bottom thread of the anti-loosening screw is connected to the inner top of the uppermost movable rod, and its top diameter is larger than the diameter of the uppermost movable rod.

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