Fishing device for migratory fishes in estuary bay area

A fish and migratory technology, applied in fishing, application, animal husbandry, etc., can solve the problems of endangered, fry damage, and the reduction of migratory fish numbers, so as to avoid damage and maintain ecological balance.

Active Publication Date: 2022-03-04
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 number of many migratory fishes has been greatly reduced, and some are even on the verge of extinction. Therefore, it is necessary to fish migratory fishes with a certain size and value for research and observation. It is convenient to study the living conditions of migrating fish. At present, river channels are usually used to assist fish migration, and then fishing devices are installed on the river channels. Larger fish are the objects of fishing. In order to maintain the ecological balance of the river, it is necessary to keep the fry. However, most of the existing fishing devices use fishing nets to catch large and small fish together, and then put the fry back into the river, but this may cause damage to the fry, and the existing fishing devices cannot catch fish well while fishing. Protection of fish may lead to the death of caught fish

Method used

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  • Fishing device for migratory fishes in estuary bay area
  • Fishing device for migratory fishes in estuary bay area
  • Fishing device for migratory fishes in estuary bay area

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Fishing devices for migratory fish in estuary and bay areas, such as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11As shown, include fishing collection frame 21, support inclined frame 22, whirling auxiliary frame 23, slotted rectangular frame 24, perforated whirling frame 25, rectangular dividing plate 26, isolating inclined plate 27, rectangular water inlet frame 28, Sorting the fishing assembly 3 and the migratory fish fishing control assembly 4 according to body type, the fishing collection frame 21 is deeply buried in the riverbed 1, and the upper part of the fishing collection frame 21 is connected with three supporting slanting frames 22 by welding, and at least a part of the supporting slanting frames 22 Located in the river bed 1, the whirling flow auxiliary frame 23 is fixed on the surface of the river bed 1 through the limiting parts, the whirling flow auxiliary frame ...

Embodiment 2

[0044] On the basis of Example 1, such as Figure 9 As shown, a migratory fish protection assembly 5 is also included, and the migratory fish protection assembly 5 is arranged inside the supporting inclined frame 22. The migratory fish protection assembly 5 is used to protect migratory fish, and the migratory fish protection assembly 5 includes a buffer Cushion 51 and hollow silica gel protection frame 52, support inclined frame 22 interior lower part is fixed with cushion pad 51, and cushion pad 51 is used for buffering fish, and cushion pad 51 upper part is symmetrically fixed with hollow silica gel protection frame 52, and hollow silica gel protection The frame 52 is used to prevent it from being damaged when catching migratory fish, and the hollow silica gel protective frame 52 is affixed to the supporting inclined frame 22 .

[0045] When the fish falls into the supporting inclined frame 22, the fish can be buffered by the buffer pad 51, and the hollow silica gel protecti...

Embodiment 3

[0047] On the basis of Example 2, such as Figure 12 and Figure 13 As shown, the water flow restriction assembly 7 is also included, the water flow restriction assembly 7 is arranged on the inner side of the rectangular water inlet frame 28, the water flow restriction assembly 7 is used to restrict the amount of water entering the perforated flow frame 25, and the water flow restriction assembly 7 includes a threaded hole Support frame 71, sliding dividing plate 72 and thread adjusting frame 74, the inside of rectangular water inlet frame 28 is connected with threaded hole supporting frame 71 by welding, the inner side of rectangular water inlet frame 28 is slidingly connected with sliding dividing plate 72, sliding dividing The plate 72 is used to block the rectangular water inlet frame 28, and the upper part of the sliding partition 72 is rotatably connected with a threaded adjustment frame 74, and the threaded adjustment frame 74 is connected with the threaded hole support...

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PUM

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Abstract

The invention relates to a fish catching device, in particular to a migratory fish catching device for an estuary bay area, which comprises a catching collecting frame, a supporting inclined frame, a backflow auxiliary frame, a slotted rectangular frame and the like, a fishing collecting frame is deeply buried in a riverbed, three supporting inclined frames are fixedly connected to the upper portion of the fishing collecting frame, at least one part of each supporting inclined frame is located in the riverbed, a backflow auxiliary frame is fixed to the surface of the riverbed through a limiting component and fixedly connected with the supporting inclined frames, and a slotted rectangular frame is fixedly connected to the upper portions of the supporting inclined frames. Through cooperation of the limiting columns and the partition plates, fish fries and large fishes can be separated, workers can conveniently treat the fish fries and the large fishes in the follow-up process, the fish fries can be effectively protected, and the workers can conveniently put the fish fries back into a river in the follow-up process to maintain ecological balance.

Description

technical field [0001] The invention relates to a fish fishing device, in particular to a fishing device for migratory fish in the estuary bay area. Background technique [0002] Migration is a characteristic formed during the phylogenetic process of fish, and it is a long-term adaptation of fish to the environment. Studying and mastering the law of fish migration is useful for people to detect changes in fishery resources and their population composition, and to forecast flood seasons. It is of great significance to formulate fish breeding protection regulations, improve the effect of fishery production and resource protection management, and release and multiply. With the development of society, the pollution of the river environment is very serious, resulting in a sharp decline in the number of fish in many rivers and lakes, and migratory fish have also suffered greatly. [0003] The number of many migratory fishes has been greatly reduced, and some are even on the verge...

Claims

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Application Information

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IPC IPC(8): A01K79/00
CPCA01K79/00Y02A40/60
Inventor 孟玮陈峰李凯蒋日进刘志坚
Owner MARINE FISHERIES RES INST OF ZHEJIANG
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