A new method of water exchange for shellfish larvae

Abstract

The invention discloses a new water exchange method for shellfish larvae, which belongs to the technical field of aquaculture. It is a new water exchange method invented by applying the basic principles of physics and the floating habit of shellfish larvae, and fully utilizes the floating habit of shellfish larvae. , Stop the air half an hour before changing the water, and connect the water changing device after most of the larvae float to the water surface. The water changing device is placed in the drainage ditch, the water basin is placed on the bracket, and the circular frame is placed in the water basin, and the screen silk is fixed on the frame, and the position of the water changing device is adjusted to the required water changing height in the nursery pond through the screw, and the steel wire is soft. One end of the pipe extends into the bottom of the nursery pool, and the other end reaches the screen silk screen of the water changing device, and uses the siphon method to change the water. According to the principle of the connector, when the water level in the nursery pool is the same as the height of the screen screen screen, the water flow automatically stops to meet the water change requirements. No guards needed. Using this method can achieve batch water change, only need to install and adjust the device according to the operation method to complete automatic water change, less personnel are required, the density of larvae in the lower half of the nursery pond is small after the larvae float up, and no washing is required during the water change process Tulle sieve, easy to operate, less damage to larvae, generally not broken sieve tulle, reduce the amount of sieve tulle. One end of the steel wire hose goes deep into the bottom of the pool to suck out dead and unhealthy larvae, which improves the quality of larvae in the pool and reduces the occurrence of diseases. This method is simple in design, strong in practicability, labor-saving, labor-saving, and easy to operate, and effectively solves a series of problems such as time-consuming, labor-intensive, many personnel required, and high management costs in the traditional water-changing method.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to a new method for changing water of shellfish larvae. Background technique [0002] In the process of raising shellfish seedlings, changing water is the main method to improve the water environment of larvae, and is a key link in seedling production. Whether the water changing method is scientific and whether the water changing facilities are reasonable will directly affect the success of seedling production and the level of management costs. If the water changing method is unscientific and the water changing facilities are unreasonable in the water changing operation, it will not only damage the larvae, but also leak the larvae. The traditional water changing methods mainly include net cage water changing and filter drum water changing. During the water changing process, the sieve silk screen needs to be replaced several times, and the density of larvae gathered o...

AI Technical Summary

Problems solved by technology

[0002] In the process of raising shellfish seedlings, changing water is the main method to improve the water environment of larvae, and is a key link in seedling production. Whether the water changing method is scientific and whether the water changing facilities are reasonable will directly affect the success of seedling production and the level of management costs. , in the water changing operation, if the water changing method is unscientific and the water changing facilities are unreasonable, it will not only damage the larvae, but also leak the larvae

The traditional water changing methods mainly include net cage water changing and filter drum water changing. During the water changing process, the sieve silk screen needs to be replaced several times, and the density of larvae gathered on the sieve silk screen during the water change process is high. In order to prevent the larvae from being injured by the net or die, it is necessary to continuously wash the larvae attached to the sieve, which is easy to cause the sieve to break and leak larvae, the operation is cumbersome, many personnel are required, and the management cost is high

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