Artificial downflow device

Abstract

The invention discloses an artificial downwelling device. The artificial downwelling device comprises a pipe body part and an artificial fish shelter part, wherein the pipe body part is mounted on the artificial fish shelter part; a plurality of fixing piles are fixedly connected to the bottom of the artificial fish shelter part; the pipe body part comprises a pipe body, a pipe opening baffle and an tail fin, wherein the pipe opening baffle is fixedly connected to the outer wall of the upper end of the pipe body; the tail fin is a strip-shaped steel plate and is fixed to the outer wall of the pipe body; the plane in which the tail fin is positioned is perpendicular to the plane in which the pipe opening baffle is positioned; the width of the pipe opening baffle is greater than the outside diameter of the pipe body; the artificial fish shelter part is a cuboid of which the centre is provided with a Venturi-type through groove; the pipe body is communicated with the Venturi-type through groove; the opening direction of the Venturi-type through groove is perpendicular to the pipe opening baffle. The artificial downwelling device is low in cost, and does not need long-term care and maintenance; energy supply is not required, so that the artificial downwelling device is energy-saving and environment-friendly; the artificial downwelling device is used for fish survival and reproduction; the ecological environment of an anoxic zone can be improved effectively.

Description

technical field [0001] The invention relates to the technical field of marine equipment, in particular to an artificial downflow device. Background technique [0002] Coastal regions are the most important modern economic development areas in the world. According to statistics, more than 50% of the world's population gathers in areas within 60 kilometers offshore. In my country, the coastal areas, which account for 13% of the country's land area, carry more than 40% of the population and create more than 60% of the country's gross domestic product. However, the coastal waters are currently facing problems such as marine environmental pollution, ecological environment damage, depletion of biological resources, sharp decline in biodiversity, lack of oxygen in water bodies, frequent occurrence of harmful red tides, etc., making the sustainable development of coastal areas face severe challenges. [0003] Among them, "hypoxia" in a water body means that the oxygen content in t...

AI Technical Summary

Problems solved by technology

Taking into account the influence of factors such as intensified red tides, the hypoxia phenomenon in this sea area will further worsen

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