KR200163967Y1 - Airflex-dome type membrane diffuser - Google Patents

Abstract

The present invention removes only the ceramic from the existing dome-type ceramic diffuser installed in the aeration tank of the sewage and wastewater treatment plant, and installs a membrane disk-shaped diffuser in the same place so that the air supplied from the blower can be finely sprayed.

Description

Airflex dome type membrane diffuser {AIRFLEX-DOME TYPE MEMBRANE DIFFUSER}

The present invention is a device for injecting fine air in the process of purifying the waste water by delivering oxygen to the microorganisms of the aeration tank in the process of water treatment of sewage and waste water, the acid pipe for this purpose is PE type and ceramic and Membrane diffuser.

The present invention does not remove the existing pipe and ceramic diffuser base when the conventional ceramic diffuser is replaced with a membrane diffuser to improve the clogging of pores due to the backflow of waste water. A dome type membrane diffuser with a structure to replace it was completed.

1 is a side view of the present invention

2 is a cross-sectional view of the operation of the present invention

* Explanation of symbols for the main parts of the drawings

1) BASE 2) RETAINING NUT 3) Membrane

4) Washer 5) Orifice Bolt 6) Outer Gasket

7) INNER GASKET 8) ORIFICE HOLE

9) HEADER PIPE

10) CERAMIC DOME DIFFUSER BASE

As shown in FIG. 1 and FIG. 2, the structure of the present invention is mainly composed of a base (BASE.1), a retaining nut (RETAINING NUT.2), and a membrane (MEMBRANE.3). When air is supplied through the air supply pipe (HEADER PIPE.8) from the blower installed in the blower's blower, it is an ethylene propylene rubber mixture, and it has excellent elasticity material with sunscreen added to prevent corrosion, currency and fallout by highly corrosive chemicals. As the membrane (MEMBRANE.9) of the membrane swells upwards, pores uniformly formed on the entire effective area of the membrane are simultaneously opened to release microbubbles of 1 to 3 mm.

The membrane (MEMBRANE.3) is retained by the shape of the 'O' ring on the edge of the membrane (MEMBRANE.3) for perfect engagement with the fixing body base (BASE.1) and retaining nut (RETAINING NUT.2). The structure of the membrane can be firmly assembled by tightening the nut (RETAINING NUT.2).

Fixing body base (BASE.1) is made of polypropylene (POLGPROPYLENE) containing sunscreen to reduce buoyancy and reinforcement. Also, it can be replaced with dome-type membrane diffuser after replacing ceramic diffuser. It has a stud of STUD and forms a protrusion at the center of the base for perfect backflow prevention.

The retaining nut and the square screw structure are bonded to each other so that the 'O' ring of the membrane (MEMBRANE.3) can be placed inside the base (BASE.1) and there is no loosening or releasing of vibration and pressure load.

The retaining nut (RETAINING NUT. 2) has 12 or more dimple shapes on the outside to facilitate binding and disassembly with the main body base (BASE. 1).

The orifice bolt (5) is made of brass and has no influence on internal corrosion. It has a hexagon head for easy assembly, and the external screw thread is 1/2 'triangular screw.

The effect of the present invention configured as described above is that firstly, when replacing the ceramic dome diffuser with a membrane dome diffuser, it can be replaced within a short time without damaging the existing equipment, and secondly, the air hole of the membrane made of EPDM. 100% uniformity, the size of the generated micro-bubble is less than 1 ~ 3mm, the oxygen transfer efficiency is high by increasing the contact area with the sewage and wastewater, and thirdly, the oxygen amount required in the aeration process ( It is possible to select an economical blower due to the small amount of air required to satisfy the OTR). Fourth, the design of the central part and orifice that functions as a check valve of the membrane to prevent backflow when the air supply is interrupted is innovative, and The pore closure is in perfect harmony. Fifth, the EPDM membrane is made of a special elastomer, which resists deformation. Excellent modulus of elasticity, extrusion molding rather than injection molding, uniform membrane thickness across the surface, less stress, strong resistance to oil and UV light, sixth membrane shape and retaining The perfect design is made considering the stretching of the membrane by the nut, and the retaining nut and the base are tightly bound by the square screw structure.

Claims (1)

According to the present invention, the air supplied from the air supply pipe (HEADER PIPE.9) is assembled into the orifice hole after the membrane dome diffuser is assembled with the orifice bolt (ORIFICE BOLT.5) on the existing ceramic dome diffuser base (10). When supplied through HOLE.8), the membrane (MEMBRANE.3) swells upwards to eject about 1 to 3 mm of microbubbles through about 1 mm of pores formed over the entire effective area of the membrane (MEMBRANE.3). A membrane domed diffuser having the same configuration as in FIGS. 1 and 2.