A fish pond inlet water jet blending device for aquaculture

Abstract

A water feeding and jetting mixed device for a fish pond for aquaculture comprises a pressure water inlet pipe, a diffusion pipe, a mixing pipe and a water outlet pipe which are arranged in succession from upper to bottom; the pressure water inlet pipe, the diffusion pipe and the mixing pipe are horizontally arranged; the water outlet pipe is horizontally arranged; the diffusion pipe is a gradual enlargement pipe with two gradual enlargement sections; an air inlet hole is formed in the cone-shaped circumferential surface of the first gradual enlargement section; the internal diameter of the mixing pipe is D4; the lower end of the pressure water inlet pipe is inserted into the upper end of the diffusion pipe along the axial direction; the upper end of the mixing pipe is inserted into a mixing area of the diffusion pipe along the axial direction; the water outlet pipe comprises three water outlet branch pipes which are arranged in upper layer water, middle layer water and lower layer water of the fish pound; the three water outlet branch pipes are communicated with the middle portion, the lower portion and the bottom of the mixing pipe. The water feeding and jetting mixed device has the advantages of being sufficient in oxygen dissolution, improving water flowing states of high density cultivation, promoting efficient discharging of particulate organic matters, effectively removing carbon dioxide accumulated through respiratory action of fishes in the high density cultivation, improving water quality in a cultivation pond, achieving an energy saving goal and being wide in applicability.

Description

Technical field [0001] The invention relates to the field of high-density industrialized indoor aquaculture, in particular to an aeration device for water intake and oxygenation. Background technique [0002] In the field of aquaculture, the main function of the aeration device is to provide sufficient oxygen for the farmed animals and promote the healthy growth of the farmed animals. There are two types of existing aeration devices: one is a blast aeration device, which is divided into a large-hole aeration device, a middle-hole aeration device, a small-hole aeration device and a micro-hole aeration device; the other is a mechanical aeration device. Surface aeration device, commonly used impeller, blade rotation to hit the water surface to achieve the purpose of aeration. The latter has high energy consumption and is not suitable for indoor factory farming. Therefore, a blast aeration device is commonly used at present. In factory circulating aquaculture, aeration has multipl...

AI Technical Summary

Problems solved by technology

[0005] 1. In production practice, many aquaculture farms in remote areas have few oxygen-making factories and it is difficult to obtain pure oxygen, which seriously restricts the development of high-density industrial aquaculture in the local area

[0006] 2. The traditional blower aeration device generally aerates the fish pond air through aeration stones and microporous aeration discs. The former has disadvantages such as large bubbles, uneven bubbles, and short air-water contact time, resulting in low oxygen utilization rate; The latter has the disadvantages of large pressure loss, uneven air distribution, easy blockage, and easy damage.

Moreover, the sealing requirements of the whole set of equipment are very high. If equipment failure or pipeline damage occurs, pure oxygen will leak, which will easily lead to production accidents.

[0008] 4. With the increase of breeding density, the concentration of carbon dioxide emitted by the respiration of farmed animals will continue to accumulate. On the one hand, it will cause breathing difficulties for farmed animals. At the same time, carbon dioxide will affect the dissolution efficiency of oxygen through changes in the partial pressure of water. However, methods cannot effectively remove carbon dioxide in aquaculture water, which makes the removal of carbon dioxide in aquaculture ponds very important.

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