Collecting device suitable for multi-body long-specification fish larvae
By designing a collection device including a first acquisition network and a second acquisition network, the problem of traditional technology being difficult to capture juvenile fish of different body lengths and specifications simultaneously is solved, and synchronous acquisition is achieved, sampling errors and operation difficulty are reduced, and acquisition efficiency and accuracy are improved.
Patent Information
- Application Number
- CN202422244937.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Priority Date
- 2024-06-13
- Filing Date
- 2024-09-13
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-09-13
AI Technical Summary
Traditional early fish resource collection technology is difficult to capture juvenile fish of different body lengths and specifications at the same time, and it is easy to miss early juvenile fish and mixed objects, resulting in inaccurate data collection, cumbersome operation, and a lot of physical strength is consumed.
A collection device including a first collection network and a second collection network is designed. The first collection network is used to catch fish with large specifications, and the second collection network is used to catch fish with small specifications. Through a detachable snap connection method, the installation and replacement of different mesh networks are realized, and the operation is simplified.
The device can simultaneously collect fish and fish, reduce sampling errors, improve collection efficiency, save time and effort, and reduce the situation of fish being damaged or missed.
Smart Images
Figure CN223040811U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of early fish resource collection, and particularly relates to a collection device suitable for larvae and juvenile fish of multiple body length specifications. Background Art
[0002] Traditionally, a hand-held net is usually used for collecting early fish resources along the river bank. Its working principle is to perform a scooping operation in the water body to be collected, and the larvae and juvenile fish passively enter the bottom of the net. After lifting it out of the water, the samples are collected from the filter mixed with sundries.
[0003] Since the body length specifications of larvae and juvenile fish in the water body are different, it is difficult to capture the late larvae and juvenile fish with stronger swimming ability by using a hand-held net with a smaller mesh size alone. When choosing a hand-held net with a larger mesh size for operation, the early larvae with smaller body length specifications are often missed. In addition, there are often various domestic wastes and branches in the water along the bank, which are easy to block the collection net and mix with the small-sized larvae, making it difficult to pick out the samples. All of these affect the collection of early resources and result in inaccurate data. At the same time, when using hand-held nets with different mesh sizes for operation, it is very troublesome to collect larvae and juvenile fish separately, and a large amount of physical strength is required. Summary of the Invention
[0004] In order to solve the problems existing in the above-mentioned prior art, the utility model provides a collection device suitable for larvae and juvenile fish of multiple body length specifications. The device has a simple structure, is easy to operate, can synchronously collect fish larvae and juvenile fish, reduce sampling errors, and save time and effort.
[0005] The technical solution adopted to achieve the above object of the utility model is as follows:
[0006] A collection device suitable for larvae and juvenile fish of multiple body length specifications includes a first collection net, a second collection net and a support frame. The first collection net includes a first netting and a first netting frame. The net mouth of the first netting is fixed on the first netting frame. The second collection net includes a second netting and a second netting frame. The net mouth of the second netting is fixed on the second netting frame. The first netting frame is located above the support frame and is detachably connected to the support frame. The first netting is located inside the support frame. The second netting frame is located above the first netting frame and is detachably connected to the first netting frame. The second netting is located inside the first netting frame. The mesh of the second netting is larger than that of the first netting.
[0007] A plurality of first buckles for cooperating with the support frame are provided at the bottom of the first netting frame. The first buckles are evenly distributed along the first netting frame. The first netting frame is connected to the support frame through the first buckles. A plurality of second buckles for cooperating with the first netting frame are provided at the bottom of the second netting frame. The second buckles are evenly distributed along the second netting frame. The second netting frame is connected to the first netting frame through the second buckles.
[0008] The first net frame is adjacent to the support frame, and the second net frame is adjacent to the first net frame.
[0009] The support frame, the first net frame, and the second net frame are all annular.
[0010] The support frame, the first net frame, and the second net frame have the same size.
[0011] It further includes a handle assembly. The handle assembly includes a connecting piece and a handle rod. The connecting piece is installed on the support frame, and the handle rod is connected to the connecting piece in a detachable manner.
[0012] The connecting piece includes an adapter rod and a joint. The adapter rod is L-shaped, with the right angle facing outwards. One straight part of the adapter rod is parallel to the support frame. One end of the adapter rod is connected to the bottom of the support frame, and the other end of the adapter rod is connected to the joint, which is connected to the handle rod.
[0013] The joint is provided with internal threads, and the handle rod is provided with external threads. The joint is threadedly connected to the handle rod.
[0014] The handle rod is a telescopic rod.
[0015] The depth of the second net is less than the depth of the first net
[0016] Compared with the prior art, the beneficial effects and advantages of the present utility model are as follows:
[0017] 1. The device has a simple structure, is scientifically and reasonably designed, can synchronously collect larvae and juvenile fish during the collection operation, greatly improves the collection efficiency, saves time and effort, and can also reduce the sampling error.
[0018] 2. The large-mesh net of the device can effectively prevent larvae and garbage from accumulating together, provide sufficient space for the larvae, reduce the difficulty of picking samples in the later stage, and reduce the situation of larvae being damaged or omitted.
[0019] 3. The device fixes the small-mesh collection net on the support frame by means of a buckle, and fixes the large-mesh collection net on the small-mesh collection net by means of a buckle. It is not only convenient for installation and disassembly, but also convenient to replace the collection nets with different mesh numbers according to needs.
[0020] 4. All components of the device are detachable and can be disassembled for storage when not in use, which is convenient to carry. Description of the Drawings
[0021] Figure 1 It is a schematic structural diagram of a collection device suitable for larvae and juvenile fish of multiple body length specifications.
[0022] Figure 2 It is an assembly drawing of the support frame, the first collection net, and the second collection net.
[0023] Figure 3 It is an assembly drawing of a support frame, a first netting frame and a second netting frame.
[0024] Among them, 1 - support frame, 2 - handle rod, 3 - connecting rod, 4 - joint, 5 - first netting, 6 - first netting frame, 7 - second netting, 8 - second netting frame, 9 - first buckle, 10 - second buckle. Specific implementation manner
[0025] The present utility model will be described in detail below with reference to the accompanying drawings.
[0026] The structural schematic diagram of the collection device applicable to multi - body long - sized larvae and juveniles provided in this embodiment is as Figure 1 shown, and it includes a first collection net, a second collection net, a support frame 1 and a handle assembly.
[0027] The support frame 1 is annular, and the support frame 1 and the handle assembly serve as the support framework of the whole device. The handle assembly includes a connecting piece and a handle rod 2. The handle rod 2 is a telescopic rod, and the length of the handle rod 2 can be adjusted according to actual needs. The connecting piece includes a connecting rod 3 and a joint 4. The connecting rod 3 is L - shaped, the right angle of the connecting rod 3 faces outward, and one straight part of the connecting rod 3 is parallel to the support frame 1. One end of the connecting rod 3 is connected to the bottom of the support frame 1, and the other end of the connecting rod 3 is connected to the joint 4. The joint 4 is provided with internal threads, the handle rod 2 is provided with external threads, and the joint 4 is thread - connected to the handle rod 2. The handle rod 2 can be disassembled for convenient storage.
[0028] The first collection net includes a first netting 5 and a first netting frame 6. The mesh of the first netting 5 is 40 meshes. The first netting frame 6 is annular, and the mouth of the first netting 5 is fixed on the first netting frame 6. The second collection net includes a second netting 7 and a second netting frame 8. The mesh of the second netting 7 is 8 meshes. The second netting frame 8 is annular. The mouth of the second netting 7 is fixed on the second netting frame 8. The support frame 1, the first netting frame 6 and the second netting frame 8 have the same size. The depth of the second netting 7 is about half of the depth of the first netting 5, and there is a large space between the second netting 7 and the first netting 5, which is convenient for fishing larvae.
[0029] Four first buckles 9 that cooperate with the support frame 1 are provided at the bottom of the first netting frame 6, and the first buckles 9 are evenly distributed along the circumferential direction of the first netting frame 6. Four second buckles 10 that cooperate with the first netting frame 6 are provided at the bottom of the second netting frame 8, and the second buckles 10 are evenly distributed along the circumferential direction of the second netting frame 8.
[0030] The first net frame 6 is located above the support frame 1. The first net frame 6 is connected to the support frame 1 through the first buckle 9. The first net frame 6 is close to the support frame 1, and the first net 5 is located inside the support frame 1. The connecting rod 3 is located directly below one of the first buckles 9, so that the assembled netting device is more beautiful. The second net frame 8 is located above the first net frame 6. The second net frame 8 is connected to the first net frame 6 through the second buckle 10. The second net frame 8 is close to the first net frame 6, and the second net 7 is located inside the first net frame 6. The first net frame 6 is connected to the support frame 1 by means of a buckle, and the second net frame 8 is connected to the first net frame 6 by means of a buckle, which is convenient for installation and disassembly and can facilitate the replacement of different collection nets.
[0031] When using this device for collection operations, the first collection net is used to catch late-stage larvae and juvenile fish with large specifications and block large garbage in the water, and the second collection net is used to catch early-stage larvae with small specifications.
Claims
1. A collection device suitable for fry and juvenile fish of multiple length specifications, characterized in that: It includes a first collection net, a second collection net and a support frame, the first collection net includes a first net and a first net frame, the net opening of the first net is fixed on the first net frame, the second collection net includes a second net and a second net frame, the net opening of the second net is fixed on the second net frame, the first net frame is located above the support frame, and the first net frame is connected to the support frame in a detachable manner, the first net is located in the support frame, the second net frame is located above the first net frame, and the second net frame is connected to the first net frame in a detachable manner, the second net is located in the first net frame, and the mesh of the second net is larger than the mesh of the first net.
2. The collecting device for fish fry of multiple length specifications according to claim 1, characterized in that: The bottom of the first net clothing frame is provided with a plurality of first buckles cooperating with the support frame, the first buckles are evenly distributed along the first net clothing frame, and the first net clothing frame is connected to the support frame through the first buckles; the bottom of the second net clothing frame is provided with a plurality of second buckles cooperating with the first net clothing frame, the second buckles are evenly distributed along the second net clothing frame, and the second net clothing frame is connected to the first net clothing frame through the second buckles.
3. The collecting device for fish fry of multiple length specifications according to claim 1 is characterized in that: The first net clothing frame is close to the supporting frame, and the second net clothing frame is close to the first net clothing frame.
4. The collecting device for fish fry of multiple length specifications according to claim 1 is characterized in that: The support frame, the first net clothing frame and the second net clothing frame are all ring-shaped.
5. The collecting device for fish fry of multiple length specifications according to claim 4 is characterized in that: The supporting frame, the first net clothing frame and the second net clothing frame have the same size.
6. The collecting device for fish fry of multiple length specifications according to claim 1 is characterized in that: It also includes a handle assembly, which includes a connecting piece and a handle rod. The connecting piece is installed on the support frame, and the handle rod is connected to the connecting piece in a detachable manner.
7. The collecting device for fish fry of multiple length specifications according to claim 6 is characterized in that: The connecting piece includes a connecting rod and a joint. The connecting rod is L-shaped, with the right angle of the connecting rod facing outward. A straight part of the connecting rod is parallel to the support frame. One end of the connecting rod is connected to the bottom of the support frame, and the other end of the connecting rod is connected to the joint, and the joint is connected to the handle rod.
8. The collecting device for fish fry of multiple length specifications according to claim 7 is characterized in that: The joint is provided with an internal thread, the handle rod is provided with an external thread, and the joint is threadedly connected with the handle rod.
9. The collecting device for fish fry of multiple length specifications according to claim 7 is characterized in that: The handle rod is a telescopic rod.
10. The collecting device for fish fry of multiple length specifications according to claim 1, characterized in that: The depth of the second net is less than that of the first net.