Diffuser and manufacturing method thereof

Abstract

The invention relates to a diffuser and a manufacturing method thereof, in particular to a device for supplying dissolved oxygen to reaction slots in wastewater treatment facilities, oceans, rivers and plants for culturing aerobic microorganism, improving the water system self-purification capacity and cultivate fishes at a high density. The apparatus can disperse air transferred from a blower into fine bubbles, thereby increasing dissolved oxygen in water. The diffuser includes a plurality diffusion holes capable of generating fine bubbles and one or more air supply ports capable of receiving air from the blower. The diffuser is formed by more than two main bodies produced by thermoplastic synthetic resin molded small bonded by fusion and can maintain a stable oxygen delivering efficiency; and the combination portion on the diffuser is excellent in airtightness.

Description

technical field [0001] The present invention relates to an air diffuser and a manufacturing method thereof, in particular to supplying oxygen to reaction tanks, lakes, rivers, farms, etc. The device can disperse the air provided by the blower into fine bubbles in the water, thereby increasing the amount of dissolved oxygen. Background technique [0002] There are many kinds of existing diffuser tubes (Diffuser), which have various shapes and structures, and are made of various materials. Among them, the membrane (Membrane) diffuser tube formed by perforating fine diffuser holes on the soft membrane has the highest oxygen transfer efficiency. [0003] However, the membrane diffuser has a structure in which the stretchable membrane repeatedly expands and contracts, so the service life is short due to the fatigue load, and the soft EPDM membrane with poor impact resistance and wear resistance, when filled with the mobile phase carrier , It is easy to be worn or damaged when i...

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Problems solved by technology

[0003] However, the membrane diffuser has a structure in which the stretchable membrane repeatedly expands and contracts, so the service life is short due to the fatigue load, and the soft EPDM membrane with poor impact resistance and wear resistance, when filled with the mobile phase carrier , easy to be worn or damaged when colliding with the flowing carrier

[0004] In addition, in the rod-type diaphragm air diffuser, since the air bubbles also float up from the bottom of the rod along the surface of the rod, the frequency of the collision of the air bubbles increases, and the air bubbles will merge into large air bubbles after the collision with each other, so the oxygen transmission will be reduced efficiency

[0005] In addition, in the disc-type membrane diffuser, the oxygen transfer efficiency is high because the air bubbles will not merge. However, when the EPDM disc is placed on the disc-type substrate and fixed with a peripheral frame, the peripheral frame and the lower substrate need to be fixed with screws. Or use bolts and nuts to assemble, so there is a problem that the screw connection part is loose or the connection part of the bolt and nut is not firm

[0006] In addition, the air diffuser of the diaphragm may also be blocked due to the adhesion of biofilm. When the air diffuser is blocked, it needs to be regularly removed with formic acid, so it is troublesome to manage.

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