Artificial fish reef with high proliferation effect

Abstract

The invention relates to the technical field of aquaculture, and discloses an artificial fish reef with a high proliferation effect. The artificial fish reef comprises a fish reef frame, a spiral cylinder is arranged in the fish reef frame, and the spiral cylinder is fixedly connected with the inner wall of the fish reef frame through a connecting rod. According to the artificial fish reef with the high proliferation effect, the spiral cylinder is additionally arranged in a traditional artificial fish reef so that seawater can actively enter the spiral cylinder through a water inlet by using the self-flowing of the seawater; a groove wall is formed in the inner part of the spiral cylinder, spiral rising of the seawater entering the spiral cylindrical can be promoted along the groove wall by means of a spiral rising structure of the groove wall, generated vortex water flow can efficiently drive nutrients of the seabed to move towards the middle upper layer of the seawater along with therising water flow, the maximum diffusion of the nutrients in the middle upper layer of the water area can be ensured through a larger outlet in the top, the rapid gathering and growth of bait are guaranteed, and therefore a better fish swarm gathering effect is achieved.

Description

technical field [0001] The invention relates to the technical field of aquaculture, in particular to an artificial fish reef with high multiplication effect. Background technique [0002] The artificial reef is a structure artificially set in the sea. Through the artificial reef, the organic matter and nutrient salts on the seabed can be brought to the middle and upper layers of the seawater, thereby promoting the large-scale reproduction of various bait and providing good food for fish. At the same time, the artificial reef can also be called an important place for fish to shelter enemies, thereby promoting fish to gather here to form a fishing ground. [0003] But existing artificial fish reefs always have some defects: [0004] 1. Although the existing artificial reefs can move part of the organic matter and nutrient salts on the seabed to the middle and upper layers of the sea through upwelling, this function of the artificial reef is passively realized through the back...

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Problems solved by technology

[0004] 1. Although the existing artificial reefs can move part of the organic matter and nutrient salts on the seabed to the middle and upper layers of the sea through upwelling, this function of the artificial reef is passively realized through the back vortex generated by itself on the seabed. The vortex is formed by a spanwise vortex and a flowwise vortex. The spanwise vortex formed by itself reaches its maximum value at 0.1 times the height of the reef, but when it reaches 0.7 times the height of the reef, the spanwise vortex disappears. However, the flow vortex reaches its maximum value on the vertical center plane of the reef, and the flow direction vortex also disappears when the distance from the vertical center plane is about 0.6 times the width of the reef. These two situations will lead to the existing artificial The fish reef can only transport organic matter and nutrients up a short distance, and has not exceeded the height of the reef itself, so the passive transport of organic matter and nutrients is poor, and these nutrients cannot be fully transported At the same time, the diffusion range of these nutrients is very limited, which leads to the poor effect of the existing artificial reefs on the aggregation of fish schools

[0005] 2. As the existing artificial reef sinks to the bottom of the sea, as the use time increases, the sediment on the bottom of the sea brought by the sea will slowly accumulate on the bottom of the reef due to the obstruction of the artificial reef, which will make the fish The openings of the reef are blocked and cannot be cleaned, so that the fish have less and less shelter for enemies, and the effect of the upwelling is getting worse and worse. Finally, the sediment completely covers the reef, making the reef completely lost. Function

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