JP2023019013A - Aerator - Google Patents

Abstract

To provide an aerator that has an anchor and a diffuser tube united into an aerator body to enable submerging work for the aerator body through towing by a small boat, and eliminates a connection structure for mooring the diffuser tube to improve durability.SOLUTION: An aerator consists of an aerator body 10 having an anchor and a diffuser tube united and an airline 20 sending compressed air from a compressor 30 to the aerator body 10, the aerator body 10 having a water filling chamber 15 divided by partition walls 15a, 15a inside a hollow, and a weight 14, wherein an upper part of the aerator body 10 has exhaust valves 11, 11 for exhausting air from the water filling chamber 15 and an air feed valve 13 to which the airline 20 is connected to feed the compressed air to the water filling chamber 15, and the partition walls 15a, 15a have aperture parts 15b dispersing the compressed air into air bubbles B.SELECTED DRAWING: Figure 2

Description

TECHNICAL FIELD The present invention relates to an aeration device that is a water quality maintenance facility in dams, rivers, lakes and marshes, and the sea.

Conventionally, aerators are installed in water areas such as dam lakes and reservoirs where water flow is difficult to occur and water stays easily. By artificially creating a circulation flow from the water to the surface of the water, it suppresses the growth of phytoplankton such as blue-green algae.

The present applicant discloses in Patent Document 1 that a large crane consists of an air diffuser moored or connected to a towed self-sinking anchor submerged in water and an air supply hose that sends compressed air to the air diffuser. Disclosed is an aeration device that can be towed only by a small boat to install anchors and diffuser pipes without bringing water into a dam lake or reservoir.

JP 2014-000889 A

However, in the above-described aeration device, after the towed self-sinking anchor is sunk, the mooring of the air diffuser pipe and the connection and disconnection of the air supply hose are performed by a person diving, which is time-consuming.

In the present invention, by integrating the anchor and the air diffuser into the main body of the aerator, it is possible to sink the main body of the aerator by towing a small boat. An object of the present invention is to provide an aeration device with improved performance.

In view of the above problems, the present invention includes an aeration device body in which an anchor and an air diffuser are integrated, and an air supply hose for supplying compressed air from a compressor to the aeration device body,
The aeration device main body has a substantially cylindrical shape, and has a water injection chamber divided by a partition wall in a hollow interior and a weight,
The upper part of the aeration device main body has an exhaust valve for exhausting air from the water injection chamber, and an air supply valve for connecting the air supply hose and supplying compressed air to the water injection chamber,
The partition wall is characterized by having an opening for dispersing the compressed air supplied from the air supply valve into bubbles.

In addition to the configuration described above, it is preferable that the partition divides the water injection chamber inside the main body of the aerator into sectors.

In addition to the configuration described above, it is preferable that the openings are formed of a plurality of round holes provided in the upper part of the partition wall.

In addition to the configuration described above, the main body of the aeration device has rotary blades fixed radially on the outer surface,
It is preferable that the rotor blade has a substantially rectangular plate-like blade body and a cushioning portion on the upper edge of the blade body for buffering contact with the air supply hose.

In addition to the configuration described above, the cushioning portion is preferably a round pipe fixed over the entire width direction of the blade body of the rotor blade.

According to the present invention, it is possible to set the aeration device main body by towing a small boat, and the compressed air is dispersed inside the aeration device main body to form bubbles, and is diffused into the water from the exhaust valve. , it is possible to carry out aeration of water bodies.

In addition, the present invention is a form in which the anchor and the air diffuser are integrated, and does not require a connection structure for mooring another air diffuser or the like on the upper part of the aerator main body, so the durability of the aerator main body is improved. Is possible.

Further, according to the present invention, by closing the exhaust valve and accumulating the compressed air inside the aerator main body, the aerator main body can be lifted from the submerged position and can be easily relocated and recovered.

It is the schematic which shows an example of the aeration apparatus of this invention. FIG. 2 is an enlarged front view showing the main body of the aeration device of FIG. 1; Fig. 3 is a plan view showing positions of an air supply valve and an exhaust valve of the aeration device main body; Fig. 3 is a see-through perspective view showing the structures of the water injection chamber and the partition wall inside the aeration device main body;

An example of an aeration device according to an embodiment of the present invention will be described in detail with reference to FIGS. 1-4.

(embodiment)
As shown in FIG. 1, the aeration system mainly includes an aeration system main body 10 sunk on the bottom of the water, and an air supply hose 20 for supplying compressed air from a compressor 30 installed on the ground to the aeration system main body 10. configured as

The aerator main body 10 is an integral body of an anchor and an air diffuser, and is a substantially cylindrical body formed from a steel plate material. It has exhaust valves 11, 11 and an air supply valve 12 connected to an air supply hose 20 on the upper part of the aerator body 10, and water injection valves 13, 13 on the lower part of the aerator body 10. The upper part of the aeration device main body 10 is provided with exhaust valves 11, 11, an air supply valve 12, etc., in order to make it easier to place the air supply hose 20 and the like during installation work and to prevent the air supply hose 20 from winding during settling. The removed portion is preferably flat.

The air supply hose 20 is attached to the air supply valve 12 of the aeration apparatus main body 10 in order to prevent twisting due to the rotation of the aeration apparatus main body 10 for maintaining a horizontal posture when the aeration apparatus main body 10 (to be described later) sinks. It has a rotatable connecting portion 23 with a swivel joint structure. Further, the air supply hose 20 is fixed by a rope 22 to a plurality of support floats 21, 21 floating on the surface of the water, and is piped as close to the surface of the water as possible up to the vicinity of the submerged position. Also, although not shown, the air supply hose 20 may be installed up to the submerged position of the aeration apparatus main body 10 and directly connected to the aeration apparatus main body 10 without the connecting portion 23 interposed therebetween.

More specifically, as shown in FIG. 4, the interior of the aeration device main body 10 has partition walls 15a, 15a that divide the water injection chamber 15 into four sector shapes, and a weight 14 below.

The weight 14 is made of a concrete block body, which lowers the center of gravity of the aerator body 10 as a whole and stabilizes it on the water surface when towing even when water is not injected into the water injection chamber 15 of the aerator body 10 . It gives a certain weight in water to keep it floating.

The partition wall 15a is formed with an opening 15b that communicates between the water injection chambers 15, so that the compressed air injected from the air supply valve 12 into the aeration device main body 10 is dispersed and becomes bubbles B, which are discharged from the exhaust valve. 11, 11 is reached. In order to disperse the compressed air supplied from the air supply valve 12 more finely into the air bubbles B, the opening 15b is preferably formed of a plurality of round holes in the upper part of the partition wall.

The exhaust valves 11, 11 are provided in the upper part of the aerator main body 10, and consist of straight tubular bodies so as to communicate with the water injection chamber 15 inside the aerator main body. The exhaust valves 11, 11 are for exhausting the air in the water injection chamber 15 at the time of sinking, but are also used as diffuser pipes for diffusing bubbles B of compressed air into the water at the time of aeration.

The air supply valve 12 is provided in the upper part of the aeration device main body 10 and is for supplying compressed air to the inside of the aeration device main body 10 connected to the air supply hose 20, and communicated with the water injection chamber 15. In order to disperse the compressed air as uniformly as possible to the plurality of exhaust valves 11, 11 to form bubbles B, the top surface of the aeration device main body 10, which is at a constant distance from the plurality of exhaust valves 11, 11, It is preferably provided near the center, and more specifically, it is provided at a position slightly displaced from the opening/closing means of the water injection valves 13, 13 provided in the center.

The water injection valves 13, 13 have, although not shown, a plurality of substantially L-shaped tubular bodies arranged so as to communicate with the water injection chamber 15, and opening/closing means for simultaneously opening and closing the plurality of tubular bodies.

The aerator main body 10 also has a plurality of rotor blades 16, 16 fixed radially on the outer surface thereof. , the aerator main body 10 is rotated on its axis, and substantially rectangular plate-shaped wing bodies 16a, 16a are inclined and fixed. In order to prevent damage due to the impact, the corners are rounded and the upper edge has round pipe-shaped cushioning portions 16b, 16b.

Next, a method of using the aeration device having the above-described configuration will be described.
In a predetermined area of water, after the aerator main body 10 is towed by a small boat to above a submerged position on the bottom of the water in a floating state near the water surface, the aerator main body 10 is opened by opening the water injection valves 13, 13 by opening/closing means. Water is injected into the water injection chamber 15 inside, and internal air is discharged from the exhaust valves 11, 11 above.

At this time, the aerator main body 10 starts sinking while increasing the underwater weight, and at the same time, the aerator main body 10 is rotated by the rotary blades 16, 16, so that the aerator main body 10 sinks to the bottom of the water while maintaining a horizontal posture, and enters the water injection chamber. When the inside of 15 is filled with water, the sinking is completed.

When air bubbles B of compressed air are diffused from the aeration device main body 10 sunk on the bottom of the water, compressed air is supplied from the compressor 30 installed on the ground to the water injection chamber 15 filled with water through the air supply hose 20. Air is supplied from the valve 12 . At this time, the compressed air temporarily stays near the ceiling inside the aerator main body 10, and after passing through the opening 15b in the upper part of the partition wall to disperse and become bubbles B, a plurality of exhaust valves 11, 11 is diffused into the water.

Therefore, with the aeration device based on the above-described configuration, the aeration device main body 10 can be submerged only by towing a small boat, and the aeration device main body 10 does not require an air diffuser as a device separate from the aeration device main body 10. It is possible to aerate the water area by dispersing the compressed air into air bubbles B inside the main body of the aeration device and diffusing the air into the water through the exhaust valves 11 , 11 .

In addition, the aerator body 10 has a form in which the anchor and the air diffuser are integrated, and does not require a connection structure for mooring another air diffuser or the like on the upper part, so that the durability of the aerator body 10 can be improved. It is possible.

In addition, by closing the exhaust valves 11, 11 on the upper part of the aerator main body 10 and accumulating the compressed air inside the aerator main body 10, the aerator main body 10 can be given buoyancy greater than its own weight to float. It is possible to easily transfer or recover the aeration device main body 10 .

Although the preferred embodiments of the present invention have been illustrated in the above embodiments, the present invention is not limited to the above embodiments, and improvements and modifications are possible within the scope of the claims. For example, the aeration device main body 10 may be provided with four or more exhaust valves 11 and 11 and a water injection chamber 15 when fine air bubbles B in which compressed air is more dispersed are diffused from the exhaust valves 11 and 11. good.

10 ... aeration device main body,
11... exhaust valve, 12... air supply valve, 13... water injection valve, 14... weight,
15... water injection chamber, 15a... partition, 15b... opening,
16... Rotary blade, 16a... Wing body, 16b... Buffer part,
20... air supply hose, 21... support float, 22... rope, 23... connection part,
30 Compressor,
B... bubbles

Claims (5)

Equipped with an aerator main body that integrates an anchor and an air diffuser, and an air supply hose that supplies compressed air from a compressor to the aerator main body,
The aeration device main body has a substantially cylindrical shape, and has a water injection chamber divided by a partition wall in a hollow interior and a weight,
The upper part of the aeration device main body has an exhaust valve for exhausting air from the water injection chamber, and an air supply valve for connecting the air supply hose and supplying compressed air to the water injection chamber,
The aeration device, wherein the partition wall has an opening for dispersing the compressed air supplied from the air supply valve into bubbles. 2. The aeration device according to claim 1, wherein the partition divides the water injection chamber inside the aeration device main body into sectors. 3. The aeration device according to claim 1, wherein the openings are formed by a plurality of round holes provided in the upper part of the partition wall. The aerator main body has rotary blades fixed radially on the outer surface,
2. The aeration apparatus according to claim 1, wherein said rotary blade has a substantially rectangular plate-like blade body and a cushioning portion on the upper edge of said blade body for buffering contact with an air supply hose. 5. The aeration device according to claim 4, wherein the buffer portion is a round pipe fixed to the entire width direction of the blade body of the rotor blade.

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