Crab cultivation net cage

Abstract

The invention discloses a crab cultivation net cage, and the net cage comprises a net cage body, an upper frame, a lower frame, a net disposed between the upper and lower frames, and an inhabitation platform disposed in the net cage body, wherein the upper and lower frames are respectively disposed at the top and bottom ends of the net cage body. Two sides of the net cage body are respectively provided with a rolling wheel which can roll freely. Moreover, there are gaps between the rolling wheels and the outer wall of the net. The outer wall of the net is at least provided with four anti-collision devices in the peripheral direction of the net. The net cage is simple in structure, is easy to implement, is provided with the inhabitation platform and a washing device, is provided with the rolling wheels and the anti-collision devices, is high in strength, effectively prevents the net from being deformed and damaged, is long in service life, is provided with a lower restoration net cage, reduces the water eutrophication, and maintains the ecological balance of seawater.

Description

Technical field [0001] The invention relates to a marine aquatic appliance, in particular to a crab breeding net box. Background technique [0002] At present, the production methods of crab breeding are becoming more and more diversified, mainly including pond type, fence type, tile urn type, cage type, etc. Because cage type aquaculture has the advantages of high stocking density, rapid growth, low incidence, easy management and fishing Advantages, has become the main breeding method of crabs. However, the existing culture cages have relatively simple structure, low strength, nets are easy to grow harmful algae, and have disadvantages such as self-pollution. Moreover, the bottom of the existing culture cages is generally flat, and the bottom of the ground preparation box is full of water when filling water. It is not conducive to the growth of crabs, thereby affecting economic benefits. [0003] The utility model with the Chinese application number 2015200368013 discloses a cra...

AI Technical Summary

Problems solved by technology

The invention is equipped with a slant plate and a habitat platform, and crabs can climb from the bottom of the box to the habitat platform through the slant plate, ensuring that the crabs are kept away from the humid environment, and at the same time expanding the activity space of the crabs and strengthening the activity intensity, which is beneficial to the growth of the crabs. To a certain extent Improve economic benefits on the surface, but still have the following defects: one, the breeding box is provided with anti-impact devices along the circumference of the net clothing, and the two sides of the breeding box are not provided with relative rolling protection devices. When abnormal conditions such as spring tide season and typhoon season come , nets and other main stress-bearing parts are easily deformed or even damaged, and two breeding boxes are also likely to collide and be damaged; secondly, the breeding boxes are not equipped with cleaning devices, but the net cages have been soaked in water for a long time. The accumulation of feed residues after eating can easily cause harmful algae to grow on the wall of the breeding box and blockage of dirt, which requires manual time-consuming and laborious cleaning. If the cleaning is not timely, a large amount of dissolved oxygen in the water body will be consumed and the normal water exchange of the breeding box will be hindered. , resulting in deterioration of the water body, and even the death of crabs; third, the crabs emit nitrogen, phosphorus and other nutrients, and the breeding tanks have self-pollution, which reduces the nutrient level of the aquaculture area, and even destroys the marine aquaculture ecosystem.

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