JPS5843997Y2 - Aerators for reservoirs, etc. - Google Patents

Description

[Detailed description of the invention] This invention relates to an aerator for preventing eutrophication of water in dam reservoirs, lakes, etc. and activating water.

In general, not only deep water in dams and reservoirs but also lakes and other reservoirs, the amount of dissolved oxygen is insufficient due to the inflow and accumulation of organic matter and the generation of methane gas, etc. Furthermore, due to the low temperature, surface water Therefore, the muddy water layer at the bottom turns into dead water, and when it is discharged downstream, it emits a foul odor, causing complaints from river basin residents, and the current situation is that a solution to this problem is urgently needed.

Conventionally, in order to solve the above problem, air is supplied to the bottom layer of a reservoir or the like to activate the bottom layer.

However, with conventional equipment, the air supplied to the bottom of the pond rises along with dead cold water, which causes the rising water to descend due to convection, causing the upper layer hot water and lower layer cold water to mix, interfering with hot water intake. Furthermore, there is a problem in that organic substances float to the surface and pollute the surface water.

The present invention was made to solve the above-mentioned problems and obtain a more efficient aerator, and will be described in detail below based on drawings showing the structure of an embodiment.

The aerator according to this invention has a double-tube structure in which a steam-water separation tube 2 is provided on the outside of a steam-water mixing tube 1 whose upper and lower ends are open. is closed, and the air discharge pipe 3 is connected, and the space between the lower end of the steam/water separation tube 2 and the steam/water mixing tube 1 is closed, and a plurality of drain pipes 4 are connected to the bottom of the steam/water separation tube 2. A surplus air reservoir 5 is formed at the discharge end of the drain pipe 4, and a plurality of buffer plates 7 each having a large number of air/water flow holes 6 are disposed inside the mixing cylinder 1. An air pipe 9 equipped with an air jet hole 8 is disposed at the bottom of the air pipe 1, and an air supply pipe 10 is connected to the air pipe 9. Furthermore, the air discharge pipe 3 is connected to the water surface via a telescopic pipe 11. Float; Float 1
The aerator main body A is connected to an exhaust pipe 13 attached to the aerator 2, and the aerator main body A is fixed to an anchor 15 at the bottom of the water with a wire rope or the like 14.

The steam/water separation cylinder 2 has a conical cylinder shape with a diameter smaller at the upper part than at the lower part, and the diameter at the upper end is narrowed so that there is a space between the top plate 2A and the upper edge 1A of the steam/water mixing cylinder 1. An air collection chamber 16 is formed in the top plate 2A, and an air exhaust pipe 3 is connected to the central opening 17 of the top plate 2A.

The lower end of the steam/water separation cylinder 2 is closed by an annular plate 18, and the upper end of the wire rope 14 is connected to the lower surface of the annular plate 18.

Openings 19 are provided on all sides of the flat end of the steam/water separating cylinder 2, and the drain pipe 4 is connected to the drain pipe 4. The other end of each air vent pipe 20 is connected to the air exhaust pipe 3 for communication.

The buffer plate 7 is formed into a substantially fan shape (not limited to this shape), and is arranged in a staggered manner at predetermined intervals in the upper and lower directions, and is provided with a large number of air and water circulation holes 6 to allow air and water to flow through each other. It is designed to allow smooth and efficient mixing and contact of water.

The air pipe 9 is formed in an annular shape, and has a lower end 1 of the air/water temperature combination pipe 1.
B by a plurality of holding rods 21 while maintaining a predetermined interval downwardly.

The other end of the air supply pipe 10 is connected to an air supply source such as a compressor 22 installed on land.

Further, the exhaust pipe 13 attached to the float 12 is provided with a valve or damper 23 for adjusting the exhaust amount, so that the exhaust amount can be adjusted as necessary.

The aerator according to this invention is installed in a reservoir P on the upstream side of a dam embankment, as shown in FIG.
The compressor 2 is installed on the quay S so that its opening is always located above the water surface, following the vertical movement of the compressor 2.
Air is supplied from 2 to an air pipe 9 located at the bottom of the water,
It is made so that it can be spouted into the water from the spout hole 8.

Therefore, the air ejected into the water mixes with and comes into contact with water while rising inside the air/water temperature combination tube 1, and is mixed with and brought into contact with water.
leading to.

At this time, the water at the bottom of the pond is accompanied by air and rises together.
It collides with the top plate 2A and changes direction and flows downward between the steam/water separating tube 2 and the steam/water mixing tube 1, where most of the air is separated and rises to return to the air gathering chamber 16, where the air It passes through the exhaust pipe 3, rises inside the telescopic tube 11, and is discharged into the atmosphere from the exhaust pipe 13.

The water that has flowed down inside the air-water separation tube 2 is discharged into the pond water through the drain pipe 4, and the air that has accompanied it up to this point accumulates in the excess air reservoir 5, from where it passes through the air vent pipe 20 and reaches the discharge pipe 3. Released into the atmosphere.

In this way, the water at the bottom of the pond is brought into contact with air within the aerator main body A, oxygen is supplied, and activation is achieved.

Since the aerator according to this invention is constructed as described above, it has a simple structure and also allows for mixing, contacting, and controlling air and water.
Separation is carried out smoothly and efficiently without the need for mechanical power such as rotating blades, and the separation and collection of air is reliable, and most of it is collected in the air discharge pipe 3 and released into the atmosphere, so bottom water and sediments are removed. It prevents floating organic matter from rising and surfacing, completely preventing surface water from becoming cold or polluted, and since the entire water in the pond is not agitated, there is no adverse effect on not only surface water intake but also normal water intake and water discharge. ,moreover,
Since the mechanical equipment is not submerged, it is compact, lightweight, and inexpensive, and maintenance and inspection are extremely easy.Since it uses a telescopic tube, it can follow fluctuations in water level, making the aerator body extremely efficient. It has many effects, including being economical.

It should be noted that the aerator of the present invention can be installed not only in dam reservoirs but also in general reservoirs, ponds, lakes, etc. to exhibit its effects.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention, in which Fig. 1 is a central longitudinal sectional front view, Fig. 2 is a sectional view taken along line II-II in Fig. 1, and Fig. 3 is a cross-sectional view taken along line III-III in Fig. 1. FIG. 4 is a sectional view taken along the line and a plan view showing an example of installation of the aerator of the present invention.

Claims (1)

[Scope of utility model registration request] The upper end of the air-water separating cylinder 2 of the aerator main body A is provided with the air-water separating cylinder 2 on the outside of the air-water mixing cylinder 1 whose upper and lower ends are open, and the air exhaust pipe 3 is connected to the air-water separating cylinder 2. The space between the lower end of the separation tube 2 and the air/water temperature combination tube 1 is closed, and a plurality of drain pipes 4 are connected to the lower part of the air/water separation tube 2, with an excess air reservoir at the discharge end of the drain tube 4. 5 is formed, a plurality of buffer plates 7 each having a large number of air/water flow holes 6 are disposed inside the mixing cylinder 1, and an air pipe 9 having air blowing holes 8 is provided at the lower part of the mixing cylinder 1. An air supply pipe 10 is connected to the air pipe 9, and the air exhaust pipe 3 is connected via a telescopic pipe 11 to an exhaust discharge pipe 13 attached to a float 12 floating on the water surface. An aerator for a reservoir, etc., characterized in that the aerator main body A is fixed to an anchor 15 at the bottom of the water with a wire rope or the like 14.