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Fish escape prevention device and dam body for flood discharge

A fish and anti-escape technology, which is applied in sea area engineering, construction, barrage/weir, etc., can solve the problems of unavoidable fish escape and inability to distinguish them, so as to improve the efficiency of fish farming, avoid a large number of escapes, and invest in small effect

Active Publication Date: 2018-06-29
靖江市华信科技创业园有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned prior art in the fish farming industry, the flood has a greater impact on the fishery output in large areas of water, mainly because the fish cannot be distinguished from the garbage and vegetation residues brought by the upstream flood during the flood discharge process. It turns out that even if pulse electricity is used to drive fish away, the problem of a large number of fish escaping with the flood cannot be avoided. The invention provides a fish escape prevention device for flood discharge and a dam body

Method used

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  • Fish escape prevention device and dam body for flood discharge
  • Fish escape prevention device and dam body for flood discharge
  • Fish escape prevention device and dam body for flood discharge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Such as Figure 1 to Figure 5 As shown, the anti-escape device for fish for flood discharge includes grating bars 2 for being arranged at the flood discharge outlet. There is a gap for water to pass between the grid bars 2, and a hinge shaft 4 is also included. The upper end of the grid bar 2 is directly connected to the hinge shaft 4 or connected to the hinge shaft 4 through a connecting piece. 2 are all obliquely arranged, the lower end of the grill bar 2 faces the downstream direction of the water flow, and the grill bar 2 can rotate around the axis of the hinge shaft 4.

[0032] Specifically, the plurality of grid bars 2 arranged in rows form a fence-like structure, and the gaps on the fence-like structure are composed of gaps between adjacent grid bars 2, and the above gaps are used as water flow channels during flood discharge. In this case, the upper end of the grid bar 2 is directly connected to the hinge shaft 4 or connected to the hinge shaft 4 through a conn...

Embodiment 2

[0036] Such as Figure 1 to Figure 5 As shown, this embodiment is further limited on the basis of Embodiment 1: as a technical solution that all grid bars 2 can rotate around the axis of hinge shaft 4 synchronously, the upper end of the grid bar 2 is directly connected to hinge shaft 4 , also includes at least two shaft seats 5 for supporting the hinge shaft 4, rolling bearings or sliding bearings are arranged in the shaft seats 5, and the hinge shaft 4 is fixed on the shaft seats 5 through rolling bearings or sliding bearings. In this solution, the rotation of the grid bar 2 is realized by the rotation of the hinge shaft 4 in the rolling bearing or sliding bearing.

[0037] As a specific implementation scheme in which the hinge shaft 4 itself does not rotate, and the grid bar 2 rotates around the hinge shaft 4, the upper end of the grid bar 2 is connected to the hinge shaft 4 through a connecting piece, and the connecting piece is connected to the hinge shaft 4. A sleeve 8 w...

Embodiment 3

[0044] Such as Figure 1 to Figure 5 As shown, this embodiment also discloses a fish escape prevention dam for flood discharge, including a dam body 1, and also includes a fish escape prevention device for flood discharge provided by any one of the technical solutions provided in any one of the above embodiments, The grid bars 2 arranged in rows start from one end of the dam body body 1, the grid bars 2 arranged in rows end at the other end of the dam body body 1, and the lower ends of the grid bars 2 are erected on the dam body. The surface of body body 1. In this solution, the anti-escape device provided by the present invention is applied to the dam body of the existing large-area water area, so that the dam body can not only exert a good flood discharge capacity, but also have a good fish escape function. .

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Abstract

A fish escape prevention apparatus for use in flood discharge comprises a plurality of grating bars (2) disposed at a spillway inlet and arranged in a row. A gap between two adjacent grating bars (2) is configured to enable water to pass therethrough. The fish escape prevention apparatus also comprises a hinge shaft (4). The upper ends of the grating bars (2) are connected to the hinge shaft (4), either directly or via a connection member. The grating bars (2) are all arranged in an inclined position. The lower ends of the grating bars (2) are arranged towards a downstream direction, and can be rotated about an axle of the hinge shaft (4).

Description

technical field [0001] The invention relates to the technical field of agricultural production and fishery breeding, in particular to a fish escape prevention device for flood discharge and a dam body. Background technique [0002] As a kind of intensive agriculture, aquaculture fishery, also known as aquaculture, refers to the cultivation of fish or various seafood in artificially opened fish farms for consumption. According to the different water quality of aquaculture, it can be divided into three categories: freshwater aquaculture, saltwater aquaculture and sea surface aquaculture. Aquaculture is most densely distributed in the southwestern coast, and its output value is second to that of pelagic fisheries. The inland area is mostly freshwater production and aquaculture. Under the effect of the rapid development of modern industrialization, ecological damage cannot be avoided, and many rivers, ditches and other flowing water areas have been polluted to varying degrees. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02B8/02E02B8/06E02B7/02
CPCE02B8/02
Inventor 廖运太
Owner 靖江市华信科技创业园有限公司