Lifting type anti-wave offshore cage

Abstract

The invention discloses a lifting type anti-wave offshore cage, which comprises an annular main frame floating at sea level, a cod end fixedly arranged on the main frame, and an anchoring device for positioning the main frame, wherein the main frame consists of a plurality of connecting racks and annular main floating pipes penetrating the connecting racks. The lifting type anti-wave offshore cage also comprises a lifting device for lifting the cod end, wherein the cod end is a closed net body, and the lifting device is arranged on the main frame and positioned above the cod end, and is in transmission connection with the cod end to pull the cod end upwards, so that the cod end is lifted onto the sea level to be in a normal culture state, or not in a normal culture state, and thus the cod end sinks to a preset depth below the sea level to be in an anti-wave state. The cod end is lifted onto the sea level to realize the normal breeding, and the cod end is lifted below the sea level to avoid typhoon when the typhoon comes, accordingly, the marine cage culture is expanded to open seas, the new culture space is developed, and the safety culture production is carried out at open seas at a water depth of 40 meters or more.

Description

technical field [0001] The invention relates to a deep water net cage used for seawater net cage culture, in particular to a lifting type anti-wind and wave deep water net cage. Background technique [0002] Seawater cage culture is a high-input, high-yield, high-risk farming method. The cages used in this farming method are brand-new farming facilities developed in the past 20 to 30 years. At present, there are about 1 million net cages in my country's coastal areas, most of which are distributed in the southeast coastal harbors. Poor wind and wave ability, resulting in extremely unstable breeding production. [0003] Due to the above defects in the existing cages, in order to reduce the impact of wind and waves on the cages, the cages can only be placed in sea areas with less wind and waves. Therefore, mariculture in my country is mainly concentrated in near-shore harbor waters and semi-enclosed bays. However, the cages in these sea areas have a low water exchange rate, an...

AI Technical Summary

Problems solved by technology

At present, there are about 1 million net cages in my country's coastal areas, most of which are distributed in the southeast coastal harbors. Poor wind and wave ability, resulting in extremely unstable breeding production

[0003] Due to the above defects in the existing cages, in order to reduce the impact of wind and waves on the cages, the cages can only be placed in sea areas with less wind and waves. Therefore, mariculture in my country is mainly concentrated in near-shore harbor waters and semi-enclosed bays. However, the water exchange rate of cages in these sea areas is low, and, because of the limitations of sea areas, the breeding density in many areas exceeds the environmental load

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