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Fish screening device for fish lift

A technology of screening device and fish lifter, applied in application, fish farming, animal husbandry, etc., can solve problems such as adverse effects on the natural environment, and achieve the effects of high screening efficiency, accurate screening and little damage

Pending Publication Date: 2018-07-06
GUIZHOU SURVEY & DESIGN RES INST FOR WATER RESOURCES & HYDROPOWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of my country's water conservancy undertakings, large and super-large water conservancy projects have emerged one after another and have a certain number and scale. However, while solving the huge needs of people's livelihood and bringing huge economic benefits, they also have certain adverse effects on the natural environment. influences

Method used

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  • Fish screening device for fish lift
  • Fish screening device for fish lift
  • Fish screening device for fish lift

Examples

Experimental program
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Effect test

Embodiment

[0020] This example is used for the fish screening device of the fish elevator, such as Figure 1~5 shown. It mainly includes two parts, the sorting pond 1 and the holding pond 7. A two-stage sorting room is arranged at the head of the sorting pond 1, and a fine mesh screen 2 and a coarse mesh screen 3 are respectively arranged in the two-stage sorting chamber to lift the fish. The fish fry collected by the machine-collecting fish box are put into the sorting room where the fine mesh screen 2 is located, and the fine mesh screen 2 is lifted for the first screening, and the small fry are screened and then put into the sorting room where the coarse mesh screen 3 is located. Lift the coarse mesh screen 3 to carry out the second screening, after sifting out the middle-sized fry, put the adult fry into the middle part of the sorting tank 1 to select and identify the fishway, and through the middle part of the sorting tank 1 to select and identify the fishway. Select the recognitio...

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PUM

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Abstract

The invention discloses a fish screening device for a fish lift. The fish screening device comprises a sorting tank (1), the head portion of the sorting tank (1) is provided with a two-stage sorting chamber, a primary sorting chamber is internally provided with a fine screen (2), and a secondary sorting chamber is provided with a rough screen (3); a sorting recognition device (4) is arranged in the middle of the sorting tank (1), and the tail portion of the sorting tank (1) is connected with a group of temporary aquaculture tanks (7) through a group of communication pipes (6); communication gate valves (5) are arranged in middles of the communication pipes (6), fish driving screens (8) are arranged in the temporary aquaculture tanks (7), and discharging gate valves (9) are arranged at inlets of discharging pipes (10) which are arranged at bottoms of the temporary aquaculture tanks (7). By the screens for sorting adult fishes, mildness and low fry damages are realized, the sorting recognition device (4) is accurate in fish screening, optimal living environments can be provided for different types of fishes through the temporary aquaculture tanks, and the whole fish screening deviceis high in fish fry screening efficiency.

Description

technical field [0001] The invention relates to a fish screening device used for a fish lifting machine, belonging to the technical field of ecological protection facilities in water conservancy projects. Background technique [0002] With the rapid development of my country's water conservancy undertakings, large and super-large water conservancy projects have emerged one after another and have a certain number and scale. However, while solving the huge needs of people's livelihood and bringing huge economic benefits, they also have certain adverse effects on the natural environment. influences. As far as the aquatic ecosystem is concerned, the construction of dams blocks the connection between the upstream and downstream of the river, breaks up the living environment of fish, and limits the gene exchange between populations, which in turn leads to a decrease in the genetic diversity of rare and unique fish, especially For migratory fish, the dam blocks the migration channe...

Claims

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Application Information

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IPC IPC(8): A01K61/95
CPCA01K61/95
Inventor 何伟杨松李云峰谢涛黄臣勇覃志强陶光慧徐国杨
Owner GUIZHOU SURVEY & DESIGN RES INST FOR WATER RESOURCES & HYDROPOWER
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