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A selective fishing device

A selective and unified technology, applied in fishing, application, fishing nets, etc., can solve problems such as laborious, position cannot be changed, selection inconvenience, etc., to achieve the effect of reducing the amount of mermaid entering

Active Publication Date: 2019-09-13
MARINE FISHERIES RES INST OF ZHEJIANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The first purpose of the present invention is to provide a selective fishing device that can reduce the proportion of caught fish in shrimp, so as to solve the problem of inconvenient selection due to large fish being caught together when fishing shrimp
[0004] The second object of the present invention aims at further providing a selective fishing device whose position in the water can be switched and pulled up from the bottom of the water on the basis of the first object, which solves the problem that the existing fishing device is located in the water Inability to shift and laborious issues pulling up from the bottom

Method used

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  • A selective fishing device
  • A selective fishing device
  • A selective fishing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment one, see figure 1 , a selective fishing device comprising a rigid ring 1 , a first net 2 and a second net 3 . The first net 2 is a bag-shaped structure. The opening end of the first net 2 is connected with the rigid ring 1, that is, the rigid ring 1 constitutes the network port of the first net. The second net 3 is a bag-shaped structure. The open end of the second net 3 is connected with the rigid ring 1 together. An aquatic product storage space 4 is formed between the first net 2 and the second net 3 . The opening area of ​​the mesh of the second net 3 is smaller than the opening area of ​​the mesh of the first net 2 . The opening area of ​​the first mesh 2 is larger than the opening area of ​​the rigid ring 1 . The first net 2 is connected with a stay rope 21 that drives the first net to move away from the second net, that is, to the right in the figure.

[0027] The rigid ring 1 comprises a bottom side 13 and a top side 19 . The lower surface 131 ...

Embodiment 2

[0030] Embodiment two, the difference with embodiment one is:

[0031] see image 3 , also be provided with air pump switch and cable driving mechanism 18. The lower end of the rigid ring 1 is provided with a pendant 11 . The pendant 11 is provided with a pendant connecting structure 16 and a sling 17 . The length of the sling 17 is 8 meters. The sling 17 connects the weight 11 to the rigid ring 1 . The pendant connecting structure 16 includes a first hanging ring 161 , a second hanging ring 162 and a cable 163 . The first suspension ring 161 includes a rigid ring 1612 with an opening 1611 at its lower end and a blocking rod 1613 . The upper end of the rigid ring 1612 is fixedly connected with the rigid ring 1 . The blocking rod 1613 closes the opening 1611 . The lower end of the second suspension ring 162 is fixedly connected with the pendant 11 . The rigid ring 1612 is sleeved on the blocking rod 1613 .

[0032] The upper end of the rigid ring 1 is connected with a ...

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Abstract

The application of the invention relates to a fishing device. The selective fishing device is characterized by comprising a rigid ring and a first net, wherein a second net is connected to the rigid ring; aquatic product storage space is formed between the first net and the second net; the opening area of net holes of the second net is smaller than the opening area of net holes of the first net; the spreading area of the first net is larger than the spreading area of an opened ring; the net holes of the second net can prevent passing of fish which must be prevented from entering the aquatic product storage space, so that aquatic products which shall be left in the aquatic product storage space can pass through the net holes of the second net; and net holes of the first net can prevent passing of the aquatic products which shall be left in the aquatic product storage space. The invention provides the selective fishing device which can reduce the proportion of fished fish in shrimps. In this way, the problem that big fish will be fished at the same time during shrimp fishing, and selection is inconvenient can be solved.

Description

technical field [0001] The application of the present invention relates to a fishing device, in particular to a selective fishing device. Background technique [0002] Existing fishing device has multiple, is in the shrimp pot fishing of unfolding state all the time as net, and net carries out the fishing net that cooperates float to open by sinker. The existing fishing device has the following disadvantages: when catching shrimp, in addition to catching fish with the same size as the prawn, it will also catch fish larger than the prawn, which brings inconvenience to the follow-up selection work; The method is located on the water surface (the buoyancy generated by the float is greater than the weight of the fishing device and the weight of the sinker is greater than the weight of the net) or at the bottom of the water (the buoyancy generated by the float is greater than the weight of the net and the weight of the sinker is greater than the weight of the fishing device when ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K71/00
Inventor 朱文斌徐国强张洪亮徐汉祥
Owner MARINE FISHERIES RES INST OF ZHEJIANG