Bird-proof device for circular gravity type net box having warning function

Abstract

The invention discloses a bird-proof device for a circular gravity type net box having warning function, relates to a bird-proof device for seawater net box breeding, and needs to provide a bird-proofdevice for a net box having warning function. The bird-proof device adopts luminous net wires of which diameters are 3.30 millimeters, and is characterized in that the luminous net wires are weaved into a conical net sheet with 133 meshes in the longitudinal direction, 6 meshes at the conical top and 840 meshes at the conical bottom and with net eye size of 80 millimeters; 6 net lines of which diameters are 4 millimeters are evenly sewn to the conical net sheet along the mesh-increasing connection line direction, and two ends of the net lines are reserved with ropes for binding a bird-proof net to a support device; one end of the rope reserved on the 6 net lines of the bird-proof net is bound to the top end of a support rod, the other end of the rope reserved on the net line is tightenedand then bound to a net box railing of which circumference length is 46.8 meters; and the lower part of the support rod is bound to the center of an annular rubber air bag, the bottom end of the support rod is connected with a sunken block, and the support rod is placed in the center of the circular gravity type net box in the seawater. The bird-proof device is used for the circular gravity type net box.

Description

technical field [0001] The invention relates to a circular gravity net cage anti-bird device for seawater net cage culture. Background technique [0002] The form of seawater cages can be divided into floating, submersible and elevating according to its underwater state, and can be divided into gravity, anchoring tension, self-tension or self-supporting cages based on the construction of the cage. Gravity cages are also called high-density polyethylene frame cages. The gravity net cage uses high-density polyethylene floating tubes as the buoyancy frame, and the weight of the sinker suspended from the bottom of the box (net bag) forms the box space (volume). The frame shapes include round, hexagonal, square, and mother-in-law Among them, the circular gravity cage with a circumference of 50m of the outer floating tube and a circumference of 46.8m of the handrail has good wind and wave resistance, and the lifting cage with the addition of sinking and floating control devices c...

AI Technical Summary

Problems solved by technology

[0003] In the process of circular gravity cage culture, the cultured fish are often caught or pecked by birds in the sea area. In order to protect the cultured fish from birds, they generally use the method of erecting gill nets in the air in the culture sea area To intercept or capture birds, but the disadvantage is that this traditional bird prevention method may cause some birds to be entangled and killed by gill nets erected in the air; in addition, the traditional circular gravity cage has no warning function, and it It will be hit and damaged by passing ships because it cannot provide warning signs in a dark environment, which will also lead to accidents of losing nets or escaping fish. Once these accidents occur, they will bring heavy losses to fishermen or farmers

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