KR102171988B1 - An Air Diffuser For Oxygen Supply - Google Patents

Abstract

The present invention relates to an oxygen supply air diffuser, and an air supply unit for increasing the amount of dissolved oxygen for treating wastewater or sewage in a water tank, and for supplying oxygen by generating bubbles discharged through a plurality of holes. In the aeration device,
A fixing plate (1) having a plurality of fixing parts 11 for fixing to the bottom of the water tank on both sides, and a main body (2) having an air supply pipe (21) formed in the center of the inside by being inserted into the fixing plate (1) in a sliding manner, It is characterized in that it comprises a perforated plate (3) in which fine holes to be assembled by being inserted into the insertion groove (222) formed in the protrusions (221) protruding from both sides of the upper (22) of the main body (2) As a result, the main body with the air injection tube formed thereon can be manufactured by injection-molding in the longitudinal direction, thereby reducing the manufacturing cost. In addition to the aeration holes formed in the main body, a perforated plate spaced apart from the upper surface of the main body is disposed. The supplied air causes air bubbles to be discharged through the micropores of the perforated plate to increase, thereby increasing oxygen dissolution due to an increase in contact area with water, thereby improving efficiency.

Description

An air diffuser for oxygen supply {An Air Diffuser For Oxygen Supply}

The present invention relates to an oxygen supply air diffuser, and more particularly, to an improved oxygen supply air diffuser to efficiently supply oxygen by generating fine bubbles in order to increase the amount of dissolved oxygen in sewage or wastewater.

In general, it measures the amount of dissolved oxygen expressed as the volume or weight of oxygen dissolved in water as a measure of water pollution in wastewater or sewage. The amount of dissolved oxygen is about 7-10 ppm in the case of clear river water, and the more clean water is, the higher the amount of dissolved oxygen is, so it is used as an indicator of water pollution.

Dissolved oxygen is an essential element for aquatic organisms, and it is desirable to have more than 5 mg/L of crucian carp and carp that can live relatively well in water contaminated with vitality. Oxygen in water is supplied by photosynthetic action of plants and algae and inflow from the atmosphere, and is consumed by decomposition of pollutants or respiration of living organisms.

Accordingly, before discharging wastewater or sewage into a river, an air diffuser injecting oxygen-containing air into the water in the form of bubbles is used to increase the amount of dissolved oxygen to suit a predetermined reference value.

As an example of such an air diffuser, in Korean Patent Registration No. 10-0935997 (registration date December 30, 2009), an air supply pipe for supplying air and a manifold for branching from the air supply pipe to an air distribution pipe ) Is connected, and in a plurality of air distribution pipes branching from the manifold, a diffuser plate main body for generating bubbles is mounted in a direction perpendicular to each other, wherein the air distribution pipe and the diffusion plate main body are injection-molded. Thus, an air control orifice is perforated in the air distribution pipe, and the diffusion plate is capable of maintaining a uniform distance from the air distribution pipe by means of a blade and a support surrounding the air control orifice. It is disclosed.

However, the above-described conventional air diffuser has a problem in that its structure is complicated and requires a lot of installation cost, and since large bubbles are formed, an improvement measure for efficiency is required.

Domestic Registration Patent No. 10-0935997 (Registration Date December 30, 2009)

It is an object of the present invention to reduce manufacturing and installation costs with a simplified structure in order to solve the above-described problems of the prior art, and an improved oxygen supply air diffuser to have a double spout structure so that bubbles are formed smaller. Is to provide.

In order to achieve the above object, the oxygen supply air diffuser according to the present invention provides an air supply unit and air bubbles discharged through a plurality of holes in order to increase the amount of dissolved oxygen for treating wastewater or sewage in a water tank. In the air diffuser for supplying oxygen generated and supplied,

A fixing plate formed with a plurality of fixing portions on both sides for fixing to the bottom of the water tank,

The main body is inserted into the fixed plate in a sliding manner and engaged in engagement, and the air supply pipe is formed in the center of the inside,

It is characterized in that it comprises a perforated plate formed with fine holes that are assembled by being inserted into insertion grooves formed in protrusions protruding opposite from both sides of the upper portion of the main body.

The central portion is cut in the longitudinal direction to both sides and bent upward to form a coupling groove, and the body has sidewalls on both sides in a "b" shape, and the lower part bent horizontally at the lower end is the coupling groove of the fixing plate described above It is inserted in the longitudinal direction and assembled in the center of the fixing plate.

Between both side walls of the main body, an air supply pipe having a cylindrical cross section and an upper portion integrally formed on both side walls are integrally formed, and a support portion is integrally formed on the upper portion by extending outwardly from both sides of the air supply pipe. A plurality of ventilation holes are formed in the upper portion through the air supply pipe and the upper portion.

According to the present invention, a main body having an air injection tube formed thereon can be manufactured by injection-molding in the longitudinal direction, thereby reducing manufacturing cost. In addition to the aeration holes formed in the main body, a perforated plate spaced apart from the upper surface of the main body is provided. The air that has been disposed and supplied causes air bubbles to be discharged through the fine holes of the perforated plate to increase, thereby increasing oxygen dissolution due to an increase in a contact area with water, thereby improving efficiency.

1 is a perspective view of an air diffuser according to the present invention.
Figure 2 is a schematic exploded perspective view of the air diffuser of Figure 1;
3 is a cross-sectional view of a use state in which the air diffuser of FIG. 1 is installed.
Figure 4 is a view of the use of the air diffuser of the present invention installed in the water tank.

Hereinafter, with reference to the accompanying drawings showing an embodiment of an oxygen supply air diffuser according to the present invention will be described in more detail.

1 to 3, the oxygen supply air diffuser device according to the present invention includes a fixing plate 1 having a plurality of fixing parts 11 formed on both sides for fixing to the floor, and inserted into the fixing plate 1 in a sliding manner and engaged. Insertion formed between the main body (2), the air supply pipe (21) as an air supply part is formed in the inner center, the protrusions (221) and the upper part (22) protruding opposite from both sides of the body (2) It includes a porous plate 3 in which fine holes are inserted and assembled into the groove 222.

Each of the fixing portions 11 formed by protruding laterally on both sides of the fixing plate 1 is fixed to the bottom of the water tank with fastening means such as bolts. In addition, the central portion 12 is cut in the longitudinal direction to both sides, bent upward, is spaced apart from the bottom of the fixing plate 1, a coupling groove 121 for coupling the body 2 to be described later is formed.

The main body 2 has side walls 23 formed on both sides in a "b" shape, and the lower part 24 bent horizontally at the lower end is inserted into the coupling groove 121 of the fixing plate 1 in the longitudinal direction It is assembled on the central part 12 of the fixing plate 1.

Between the both side walls 23 of the main body 2, an air supply pipe 21 having a cylindrical cross section and an upper portion 22 integrally formed on both side walls are integrally formed, and the air supply pipe 21 and the upper portion A plurality of ventilation holes 241 through 22 are formed in the upper part 22. The air supply pipe 21 also extends outwardly from both sides thereof to form a support part 213 integrally formed with the upper part 22.

In addition, protrusions 221 are formed in the upper portion 22 of the main body 2 in a shape that is adjacent to the side walls 23 and protrudes upward and bent to face each other, so that the protrusions 221 and the upper (22) In the insertion groove 222 formed as a gap between the perforated plate 3 is fitted in the longitudinal direction and assembled.

A plurality of fine holes 31 of the perforated plate 3 are formed, and the flange 32 is formed horizontally after being bent downward at both ends. The flange is inserted in the longitudinal direction into the insertion groove 222 formed between the protrusions 221 protruding from the upper part 22 of the main body 2 and the upper surface of the upper part 22 so that the perforated plate is It is assembled as shown in the cross-sectional view of Figure 3 in a state spaced apart from.

The use of the air diffuser of this structure will be described with reference to the use state diagram of FIG. 4.

The diffuser apparatus of the present invention inserts the horizontally bent lower portion 24 at the bottom of both side walls 23 of the main body 2 into the coupling grooves 121 formed on both sides of the central portion 12 of the fixing plate 1 in the longitudinal direction. Thus, while the main body is assembled to the fixing plate 1, the fixing portions 11 formed on both sides of the fixing plate 1 are fixed to the bottom of the water tank 100 with fastening means such as bolts.

When air is supplied to the air supply pipe 21 integrally formed inside the main body 2 by an air pump not shown in the drawing, the upper part of the main body is formed through a plurality of ventilation holes 241 formed in the air supply pipe 21. After ejecting into the space 35 between the perforated plate 3 and 22), the water on the upper side of the perforated plate is ejected in the form of bubbles through a plurality of fine holes 31 formed in the perforated plate 3.

At this time, the air ejected through the micropores 31 of the perforated plate 3 is ejected in the form of small bubbles, so that the area in contact with water is increased, so that oxygen in the air can be efficiently dissolved in water. It is possible to increase the amount of dissolved acid.

Although not shown in the drawing, water in the water tank can flow into the space 35 between the porous plate 3 and the upper portion 22 of the main body 2 through the fine holes 31 of the porous plate 3 , In this case, bubbles by the air ejected through the ventilation holes 241 of the air supply pipe 21 are first formed in the space 35, and then the bubbles are formed through the fine holes 31 of the porous plate 3 As the air bubbles are ejected, the bubbles are split into smaller sizes, so that the size of the bubbles decreases, so that the surface area of contact between the entire bubbles and water is increased, making it more efficient in dissolving oxygen.

Although it is shown that only one air diffuser is installed in the water tank shown in FIG. 4, if necessary, a plurality of such diffuser devices may be installed in parallel or in series.

The present invention can be used for an aeration device for increasing the amount of dissolved oxygen for treatment of wastewater or sewage in a water tank.

1: fixing plate 11: fixing part
12: central part 121: coupling groove
2: main body 21: air supply pipe
22: upper 221: protrusion
222: insertion groove 23: side wall
24: lower 241: ventilation hole
3: perforated plate 31: fine hole

Claims (3)

The main body (1) having a plurality of fixing parts (11) for fixing to the bottom of the water tank formed on both sides, and an air supply part that is slidably inserted into the fixing plate (1) and engaged with the air supply pipe (21) in the inner center ( 2), it is assembled in the main body and includes a porous plate 3 having fine holes formed so as to generate air bubbles while the air supplied from the air supply pipe is discharged,
Between both side walls 23 of the main body 2, an air supply pipe 21 having a cylindrical cross section and an upper portion 22 are integrally formed on both side walls, and from both sides of the air supply pipe 21 to the outside The support part 213 is formed integrally with the upper part 22 by extending, and the air supply pipe 21 is communicated with the upper part 22 and the ventilation hole 241 is formed to treat wastewater or wastewater in the water tank. In the oxygen supply air diffuser for supplying air to increase the amount of dissolved oxygen for
Both ends of the perforated plate 3 are inserted into and assembled into the insertion grooves 222 formed in the protrusions 221 that are protruding from both sides of the upper portion 22 of the main body 2 and bent inward. The pores 241 are formed of a plurality of pores communicating toward the center and both sides of the space 35 between the perforated plate 3 and the upper portion 22 of the main body 2.

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