JP3229805B2 - Deep aeration equipment for reservoirs, etc. - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a deep aeration apparatus used for improving the water quality of a deep part in a water source reservoir such as a lake or a marsh or a dam, or a water area such as a harbor.

[0002]

2. Description of the Related Art Conventionally, as this kind of deep aeration apparatus,
For example, there is a device described in Japanese Utility Model Laid-Open No. 63-29553.

That is, in this conventional apparatus, as shown in FIG. 4, an apparatus main body 1a has a double cylinder structure of an outer cylinder 2c and an inner cylinder 3b, and a diffuser pipe 11c is disposed at a lower end of the outer cylinder 2c. And outer cylinder 2c
An exhaust pipe 18a having an exhaust valve 20a is connected to the top surface of the inner cylinder 2c. The dissolved oxygen concentration of the deep water in the outer cylinder 2c is increased by fine air bubbles diffused from the diffuser pipe 11c. 3b
From the lower end of the reservoir to the deeper part C 'of the reservoir B' to improve the water quality.

When the concentration of dissolved oxygen in deep water is increased by operating the aeration device for a long time, the amount of oxygen dissolved in the deep water decreases, and excess air gradually increases in the upper part of the outer cylinder 2c. The surplus air is discharged to the atmosphere through the exhaust pipe 18c.

The exhaust pipe 18a has an exhaust valve as described above.
20a is provided, which secures the amount of air accumulated in the upper part of the outer cylinder 2c in order to perform good air-water separation in the apparatus main body 1a, while being discharged from the exhaust pipe 18a together with the air. This is for reducing the amount of deep water.

[0006]

However, in the prior art described above, the exhaust pipe 18a is provided with an exhaust valve 20a, which restricts the amount of air discharged from the exhaust pipe 18a. Excess air that has risen in the inner cylinder 3b without dissolving in the deep water gradually accumulates in the upper part of the outer cylinder 2c. Such a situation also occurs when foreign matter is clogged in the exhaust pipe 18a.

Therefore, when the amount of accumulated air in the outer cylinder 2c exceeds a certain level, the buoyancy causes the apparatus main body 1a to float on the water surface carelessly, so that there is a problem that the safety of operation cannot be ensured. In addition, there is a problem that the apparatus main body 1a is damaged.

SUMMARY OF THE INVENTION Therefore, the present invention has been made to solve the above-mentioned conventional problems, and it is possible to appropriately discharge the air accumulated in the apparatus main body so as to prevent the careless floating of the apparatus main body. It is an object of the present invention to provide a safe deep aeration operation without preventing the apparatus main body from being damaged.

[0009]

That is, the means adopted by the present invention to solve the above-mentioned problems is a deep portion C such as a reservoir B or the like.
And an apparatus main body 1 that is capable of being self-sustained by buoyancy and is connected to the apparatus main body 1 through an exhaust pipe 18 provided with an exhaust valve 20 so that air inside the apparatus main body 1 is discharged to the outside to be discharged to the outside. In a deep aeration device for a reservoir or the like comprising a floating exhaust body 16 to be lifted, an exhaust path capable of discharging air from the device main body 1 is separately provided in order to prevent the device main body 1 from floating due to accumulation of the air. It is in the point. Specifically, the first of the present invention
In the aspect, the floating exhaust body 16 and the device main body 1
And a return pipe 22 connected between the
The air is blown to prevent the device body 1 from floating.
And the floating exhaust body 16 and the apparatus body
1 and another exhaust pipe 21 connected between the
At the lower end of another exhaust pipe 21 inserted into the
21a, and the inflow port 21a is provided in the exhaust pipe 1
8 at a position below the inlet 19a and due to accumulation of air.
Above the air accumulation level L at which the device body 1 floats
It is arranged in the place. Also, the inlet of the other exhaust pipe 21
21a, the lower end opening 2 of the return pipe 22
It is arranged below 2a. Furthermore, the present invention
The second mode is arranged in a deep part C such as a reservoir B to increase buoyancy.
A more self-sustaining device body and an exhaust valve 2
0 through the exhaust pipe 18 provided with the
Floating body 1 arranged on the water surface to discharge air from outside
6. A deep aeration apparatus for a reservoir or the like comprising 6
In order to prevent the apparatus body 1 from floating due to accumulation of air,
A separate exhaust path is provided for exhausting the
The exhaust path has a lower end connected to the apparatus body 1 and an upper end
Is another exhaust pipe 21 suspended in the reservoir B.
Features. In the second aspect of the present invention,
Is a lower end of another exhaust pipe 21 inserted into the apparatus main body 1.
Is provided with an inlet 21a and the inlet 21a is
It is located below the inlet 19a of the trachea 18 and stores air.
Than the air accumulation level L at which the apparatus body 1 floats due to the product
A configuration arranged at the upper position is preferable.

Therefore, in the deep aeration apparatus characterized by the above-described structure, the air normally accumulated in the apparatus main body 1 is discharged to the floating exhaust body 16 through the exhaust pipe 18 and the exhaust valve 20. However, for example, when the dissolved oxygen concentration is increased due to an increase in the dissolved oxygen concentration in the deep water, the amount of excess air accumulated in the outer cylinder 2 gradually increases.

When the amount of air exceeds a certain level, the excess air in the outer cylinder 2 is discharged through a separately provided exhaust path, so that the main body 1 floats from a deep portion C such as a reservoir B or the like. No matter what, the stable installation is maintained.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes an apparatus main body composed of an outer cylinder 2 having a flange 2a at a lower end and having an open bottom surface, and an inner cylinder 3 having an upper end inserted into the outer cylinder 2. A plurality of mounting plates 4 are provided between the outer peripheral surface of the cylinder 3 and the inner peripheral surface of the outer cylinder 2, and a passage 5 is formed between the two.
Are arranged concentrically on the outer cylinder 2.

Reference numeral 6 denotes a disk-shaped baffle arranged to face the upper opening 3a of the inner cylinder 3 via a plurality of mounting rods 7. 8
Is an annular body fixed to the outer peripheral surface of the inner cylinder 3 at predetermined intervals above and below the flange 2a of the outer cylinder 2.

Reference numeral 9 denotes a plurality of chains 10 at the lower end of the inner cylinder 3.
The weights connected via are shown. Reference numeral 11 denotes an air diffuser tube provided at a lower end portion of the air diffuser tube 11 for supplying air as fine bubbles into the inner cylinder 3, and a compressor (not shown) is connected to the air diffuser tube 11 through an air supply hose 12. .

Reference numeral 13 denotes a hemispherical top surface of the outer cylinder 2 formed by a partition wall 14.
In the annular space provided inside 2b, the annular space 13 is filled with urethane foam 15.

Reference numeral 16 denotes a floating exhaust body having a float 17 attached to an outer surface thereof and capable of floating on a water surface A such as a reservoir, and has an exhaust hole (not shown) on a side surface.

Reference numeral 18 denotes one exhaust pipe having a lower end inserted into the center of the top surface 2b of the outer cylinder 2, and a pair of orifices 19 having an inflow port 19a as shown in FIG. The upper end, which is provided above and below and to which the exhaust valve 20 is connected, is inserted into the bottom surface of the floating exhaust body 16.

Reference numeral 21 denotes another exhaust pipe as an exhaust path which is disposed on the side of the one exhaust pipe 18 with a lower end having an inflow port 21a at the end face inserted into the top surface 2b of the outer cylinder 2. , The exhaust pipe
21 has a predetermined pipe diameter, and its upper end is inserted into the bottom surface of the floating exhaust body 16.

A return pipe 22 has a lower end inserted into the top surface 2b, and an upper end thereof is inserted into the bottom surface of the floating exhaust body 16. Reference numeral 23 denotes a receiving tray which is installed opposite to the lower end of the return pipe 22.

The orifice 19 of one exhaust pipe 18, the inlet 21a of the other exhaust pipe 21, and the lower end opening 22 of the return pipe 22
The arrangement height of a is such that, as shown in FIG. 2, one exhaust pipe 18 is arranged at the highest position and the other exhaust pipe 21 is arranged at the lowest position. The air accumulates inside the outer cylinder 2 and is determined in consideration of the weight of the apparatus body 1 and the weight 9 and the diameter of the exhaust pipe 21, and the apparatus body 1 rises due to an increase in buoyancy. Air accumulation level L
It is set to a position higher than the above.

Reference numeral 24 denotes a rope connected between the weight 9 and the floating exhaust body 16.

The present embodiment has the above-described configuration. In this aeration apparatus, its weight 9 is installed at the bottom D of the reservoir B so that the apparatus main body 1 is disposed in a deep portion C such as the reservoir B. However, since the annular space 13 provided in the outer cylinder 2 of the apparatus main body 1 and the urethane foam 15 filled therein exhibit a float function, the apparatus main body 1 is maintained in a self-standing state. Deep water flows into the outer cylinder 2 and the inner cylinder 3 of the apparatus main body 1.

Next, a description will be given of a case in which the water quality of the deep part C such as the reservoir B is improved by using this. First, when the compressor is activated, the air diffuser
From 11, air is diffused as fine bubbles into the inner cylinder 2 and mixed with the deep water in the inner cylinder 3. The mixed gas-liquid two-phase rises in the inner cylinder 3 together with the air bubbles. During that time, the oxygen in the air dissolves in the deep water and the dissolved oxygen concentration increases.

Thereafter, the flow rate of the mixed gas-liquid two-phase flowing out of the inner cylinder 3 is reduced by the baffle 6 and flows out of the outer cylinder 2 to separate gas and liquid. Then, the separated aerated deep water descends through the passage 5 of the apparatus main body 1, is discharged to the side by the annular body 8 of the inner cylinder 3, and is diffused to the deep part C.

On the other hand, the excess air separated and accumulated in the upper part of the outer cylinder 2 is supplied to the orifice 19, one exhaust pipe 18 and the exhaust valve 20.
After being discharged into the floating exhaust body 16 through the air outlet, the air is discharged into the atmosphere from the exhaust hole. At this time, part of the deep water rises along one of the exhaust pipes 18 and flows into the floating exhaust body 16 together with the excess air, but this deep water is returned into the apparatus main body 1 again through the return pipe 22. Therefore, deep water is not released to the upper layer area such as the reservoir B.

In this way, the quality of deep water is improved. For example, the inflow port 19 of one orifice 19 is improved.
When a is clogged or the dissolved oxygen concentration of the deep water increases and the dissolving ability decreases, the amount of excess air accumulated in the outer cylinder 2 gradually increases.

When the amount of air exceeds a certain level, the excess air in the outer cylinder 2 is discharged into the floating exhaust body 16 through another exhaust pipe 21. Since the inlet 21a is disposed above the air accumulation level L at which the apparatus main body 1 floats, the excess air can be appropriately discharged to the floating exhaust body 16 so as not to reach the air accumulation level L. . Therefore, the installation state in the deep part C such as the reservoir B is maintained well without floating the apparatus body 1, and a series of aeration operations can be performed safely.

Further, since the aeration apparatus according to the present embodiment has a very simple configuration, there is an advantage that the aerator can be manufactured easily and inexpensively.

In the above-described embodiment, the outer cylinder 2 and the floating exhaust body are used as an exhaust path through which air can be discharged from the apparatus main body 1 in order to prevent the apparatus main body 1 from floating due to accumulation of air.
Although another exhaust pipe 21 connected between the exhaust pipes 21 is employed, it is not always necessary to connect the other exhaust pipe 21 to the floating exhaust body 16, and for example, as shown in FIG. May be connected and floated in the reservoir B or the like by the float 26. With this configuration, since the air discharged from the exhaust pipe 21 is ejected from the water surface, it is possible to visually confirm that the amount of accumulated air is increasing from the outside, so that such a situation can be dealt with early. There are advantages.

Further, by providing the return pipe 22 as in the above embodiment, the deep water flowing into the floating exhaust body 16 via the exhaust pipe 18 is returned to the apparatus main body 1, and the deep water is stored in the reservoir B or the like. However, the return pipe 22 may be provided as needed, and may be omitted.

Further, it is not necessary to provide the orifice 19 in the one exhaust pipe 18 as in the above embodiment, and the lower end face thereof may be opened and used as the inflow port 19a.

In addition, the specific structure of the apparatus main body 1, the floating exhaust body 16, the exhaust path, and the like can be arbitrarily changed within the range intended by the present invention.

[0034]

As described above, the present invention is provided with an exhaust passage capable of discharging air accumulated in the apparatus main body in order to prevent the apparatus main body from floating, in addition to the exhaust pipe having the exhaust valve. In addition, careless floating of the main body of the apparatus due to the increase of the accumulated air is prevented, and the installation state of the main body of the apparatus in a deep part such as a reservoir is favorably maintained. A special effect has been obtained in which a series of operations can be performed safely without causing damage to the main body.

Further, since the deep aeration apparatus according to the present invention has a very simple structure, there is also a practical effect that it can be manufactured easily and at low cost.

[Brief description of the drawings]

FIG. 1 is a partially sectional front view showing an embodiment of the present invention.

FIG. 2 is a sectional view of a main part.

FIG. 3 is a partial cross-sectional front view showing another embodiment.

FIG. 4 is a partial cross-sectional front view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Device main body 16 ... Floating exhaust body 18 ... Exhaust pipe 19a ... Inlet 20 ... Exhaust valve 21 ... Exhaust pipe 21a ... Inlet B ... Reservoir C ... Deep part L ... Air accumulation level

Claims (4)

(57) [Claims] 1. An apparatus main body (1) which is arranged in a deep part (C) such as a reservoir (B) and can be self-supported by buoyancy, and an exhaust pipe provided with an exhaust valve (20) in the apparatus main body (1). (18) in the deep aerator for reservoirs such as consisting of the connected air of the main body (1) in floating-gas that is disposed on the surface of the water in order to remove to the outside (16) through said floating Connected between the exhaust body (16) and the device body (1)
A return pipe (22) that is, be capable of discharging the air in order to prevent the floating of the apparatus main body due to the accumulation of the air (1) from the apparatus main body (1), wherein
It is connected between the floating exhaust body (16) and the apparatus body (1).
And another exhaust pipe (21) is provided, and the other exhaust pipe (21) inserted into the apparatus body (1) is provided.
An inlet (21a) is provided at the lower end and the inlet (2
1a) from the inflow port (19a) of the exhaust pipe (18)
Is also at the lower position, and the device body (1) floats due to air accumulation.
A deep aeration device for a reservoir or the like, wherein the deep aeration device is disposed at a position higher than an upper air accumulation level (L) . 2. An inflow port (21) of said another exhaust pipe (21).
a) is a lower end opening (22) of the return pipe (22).
The deep aeration apparatus for a reservoir or the like according to claim 1, wherein the deep aeration apparatus is disposed at a position lower than a) . (3) The reservoir is disposed in a deep part (C) such as a reservoir (B).
Device body (1) capable of self-sustaining by buoyancy, and the device body
(1) through an exhaust pipe (18) provided with an exhaust valve (20).
To discharge the air inside the device body (1) to the outside
Water storage consisting of a floating exhaust body (16) arranged on the water surface
In a deep aeration device for a pond or the like, the floating of the device body (1) due to the accumulation of air should be prevented.
Separate the exhaust path that can discharge the air from the device body (1).
The other exhaust pipe (2) having a lower end connected to the apparatus body (1) and an upper end floating in the reservoir (B).
1) A deep aeration device for a reservoir or the like, which is characterized in that 1). 4. An inflow port (21a) is provided at the lower end of another exhaust pipe (21) inserted into the apparatus main body (1), and the inflow port (21a) is connected to the exhaust pipe (18). Inlet (1
The deep aeration apparatus for a reservoir or the like according to claim 3, wherein the deep aeration apparatus for a reservoir or the like according to claim 3, wherein the apparatus main body (1) is arranged below the air accumulation level (L) at which the apparatus main body (1) floats due to accumulation of air.