Circulating type fish culturing apparatus

Abstract

The invention discloses a circulating type fish culturing apparatus comprising a box body, a fixed ring, a movable cylinder, a driving assembly and a heating tube. A hydraulic cylinder is arranged at the top of the heating pipe. A fixed bar is fixedly connected to the bottom of the box body and is fixed above the fixed ring by a plurality of supports; and the movable cylinder is rotatably arranged at the lower end of the fixed ring and the outer wall of the movable cylinder is provided with an insection ring. The driving assembly includes an insection plate and a drive motor. A port is formed in the middle of the upper end of the movable cylinder and is connected to the bottom of the heating tube. Besides, a plurality of check valves A communicated with the inner cavity of the movable cylinder are arranged at the upper end of the movable cylinder; and a plurality of check valves B communicated with the inner cavity of the movable cylinder are arranged at the lower end of the movable cylinder. When the circulating type fish culturing apparatus is working, water in the heating tube is heated and the hydraulic cylinder extends out; a piston is driven to squeeze water in the heating tube and the movable cylinder out; and thus the rest of fodder at the bottom of the box body is driven to move to avoid fodder accumulation. The fodder moves to the water surface with air and thus the fodder is distributed uniformly in water, so that the cultured fish can eat the fodder conveniently.

Description

technical field [0001] The invention relates to a fish breeding device, in particular to a circulation type fish breeding device. Background technique [0002] In the field of fish farming, cage culture is widely used. Fish farming in net cages is a method in which synthetic fiber mesh or metal mesh is used as a material, assembled into a box of a certain shape and specification, and set in a water body suitable for fish farming. Cage fish farming is a technology that the aquaculture industry in the world is developing towards intensive production. It has high output, low cost, small investment, easy management, land saving, water saving and energy saving, and effective development of large water surface fisheries in rivers, lakes and reservoirs. [0003] Cage fish farming has the following advantages: First, the fish are kept in the cage, the activity is reduced, the respiratory rate is reduced, the metabolism is slow, the energy consumption is reduced, and it is beneficia...

AI Technical Summary

Problems solved by technology

However, the existing net cages have the following problems: 1. The excess feed is easy to accumulate at the bottom of the casing. If it is not cleaned for a long time, it will affect the water quality, thereby causing pathological changes or even death of the fish

2. The cage will affect the flow of water body, resulting in poor water circulation in the breeding area, which will also lead to a decrease in water quality

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