Self-pressed suction oxygen-aeration blow-off pipe

Abstract

The invention relates to a self-pressed suction oxygen-aeration blow-off pipe which comprises a water inlet section (2), a contraction section (3), a throat tube (4), an air-entraining oxygen-aeration section (10) and a bend (9), wherein the bend (9) is connected to the tail end of the air-entraining oxygen-aeration section (10); an air suction cavity (7) of which the longitudinal section is arc-shaped is formed in the upper part, which is close to one end of the bend (9), of the throat tube (4); the cross sectional area of the air suction cavity (7) is gradually reduced from the exterior to the interior; an opening in the bottom of the air suction cavity (7) faces one side of a nozzle (10); the upper part of the air suction cavity (7) is connected with an air inlet tube (6); a vibrating plate (8) is fixed in the bend (9); and the vibrating plate (8) generates high-frequency vibration under water flow impact so as to break air bubbles, and the formed micro bubbles are dissolved in water so as to realize oxygen aeration. The self-pressed suction oxygen-aeration blow-off pipe is convenient to operate and maintain, low in construction cost and capable of stably and continuously increasing oxygen content in water, and has wide market prospects.

Description

technical field [0001] The invention relates to the technical field of modern agriculture, in particular to a self-pressurized air-breathing oxygen-increasing and oxygen-increasing water-discharging pipe which can increase the oxygen content of irrigation water supply or breeding water supply. Background technique [0002] Studies have proved that the increase of oxygen content in irrigation water can activate microbial activities in the root zone and mineral transformation, promote the growth of adventitious roots, water and nutrient absorption, play a role in saving water, increasing production, reducing non-point source pollution and preventing soil salinization . Increasing the oxygen content in the water supply for aquaculture can promote the growth and development of aquaculture organisms, degrade COD and other harmful substances in the water, purify the water environment, and improve the efficiency of aquaculture. [0003] In agricultural planting, the development of...

AI Technical Summary

Problems solved by technology

But this device air inlet 7 is straight-through type, and 4 air inlets 7 vertical throat pipes 6 are arranged, and 4 air inlets 7 are distributed successively at intervals of 90°, specifically as Image 6 As shown, the cross-sectional area of ​​the air intake hole 7 is much larger than the original cross-sectional area of ​​the throat pipe 6, which is equivalent to forming a diffusion section at the air intake hole 7, and the liquid flow rate decreases, resulting in too small negative pressure formed, making it difficult for the outside air to It is efficiently sucked into the microbubble generating device, which reduces the oxygenation effect, and even makes the water flow overflow through the air inlet 7, so that the gas cannot be inhaled stably and continuously

Additionally, from Image 6 It is easy to see that the cross-section of the throat 6 is rectangular, and it is easy to infer that the liquid flow rate is different at different positions on the periphery of the throat 6, the stress distribution at each position is uneven, and the problem of stress concentration is prone to occur at some positions, which affects the stress of the pipe. The capacity puts forward higher requirements, and the frictional resistance in the square tube is relatively large, which does not conform to the principle of fluid mechanics, and the pressure head loss in the throat 6 is large, which is not conducive to the inhalation of gas

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