Trickle type pure oxygen dissolving device

Abstract

The invention provides a trickle type pure oxygen dissolving device. The device comprises a group of annular mixed cavity, a water distribution channel and a water outlet channel, wherein the mixed cavities consists of a plurality of cavities which are mutually sheathed and the diameters of the cavities gradually reduce from outside to inside; the cavities are communicated mutually from outside toinside by arranging a water inlet pipe; oxygen enters the mixed cavity through a gas inlet pipe to ensure the oxygen concentrations of all cavities to be consistent basically; the water outlet channel is internally provided with a water discharge pipe with the water level retaining function; a water body forms a uniform water flow through a water distribution plate in the water distribution channel to enter the mixed cavity; the oxygen sequentially enters every cavity in the mixed cavity from outside to inside through the gas inlet pipe arranged on the mixed cavities and conducts gas-liquid exchange with the water body to realize oxygenation of the water body; and the residual oxygen that is not completely dissolved in water through the cavities enters a tail gas recovery pipe to be mixedwith the water flow overflowing in the tail gas recovery pipe, so as to improve the utilization rate of oxygen to the greatest extent. The oxygenated water body is discharged by the water discharge pipe through the water outlet channel.

Description

technical field [0001] The invention relates to an oxygen dissolving device for increasing oxygen in a water body, in particular to a trickle-type pure oxygen dissolving device which uses pure oxygen as an oxygen source to increase oxygen in a water body. Background technique [0002] With the rapid development of my country's aquaculture recirculating aquaculture industry, as a key technical link in the aquaculture system, water body aeration technology has been paid more and more attention. According to different oxygen sources, the oxygenation of the water body in the aquaculture system can be divided into two ways: blast aeration and pure oxygen oxygenation. Release devices (such as aeration heads, aeration tubes and aerators, etc.) release air into the water body in the form of tiny bubbles to achieve gas-liquid exchange with the water body and achieve the purpose of increasing oxygen in the water body in the aquaculture system. [0003] The oxygen source of the pure o...

AI Technical Summary

Problems solved by technology

Conventional pure oxygen oxygenation methods include two types: direct release device (such as nano aeration disc, etc.) and pressure type water-air (oxygen) mixed aeration; Oxygenation is generally used for direct aeration in fish ponds. It has the advantages of simple equipment, low energy consumption and convenient use, but its oxygen utilization rate is low (generally 20% to 40%); Oxygen) mixed oxygenation is often used for oxygenation in the water treatment process. Although its oxygen utilization rate is quite high (generally greater than 90%) and the dissolved oxygen in the effluent is high (generally greater than 35mg / L), due to the pressure type water-gas (Oxygen) The mixing chamber (body) for mixing and increasing oxygen has a pressure of more than 0.1MPa when it works, causing the water body entering the mixing chamber to require a water body pressure greater than 0.1MPa, resulting in excessive water circulation energy consumption during the oxygenation process. In addition, Since the mixing chamber is a pressure vessel, its manufacturing, installation, maintenance and price are relatively high

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