JPH0657789A - Underwater storage of water - Google Patents

Abstract

PURPOSE:To simply and stably utilize waters in small lakes and marshes, ponds, cannals and others scattered in various areas without requiring apprehension for places of storage or problems of lowering of water level. CONSTITUTION:A flexible tank 1 is placed underwater. The water in which the flexible tank 1 is placed is filtrated with a filter 6 placed above the surface of the water. Then the filtrated water is stored in the flexible tank 1 by utilizing head pressure. Since the water is stored in the source of water itself, there is no need for securing a location for installation while there is no problem about lowering of water level.

Description

Detailed Description of the Invention

[0001]

The present invention relates to, for example, emergency water supply, household water (cleaning, flush toilet, air conditioning cooling water, etc.),
Storing water used for pools, planting, fish farming, landscape (fountains, artificial waterfalls, etc.) and various industries easily and stably using lakes, ponds, moats, etc. Regarding the device.

[0002]

2. Description of the Related Art Conventionally, as a water storage device, a land type device for storing water on land and a subsea type device for storing water in the sea are known.

[0003] Generally, a land-based water storage device is of a type in which rainwater or the like is filtered and introduced into a water storage tank constructed underground or on the ground for storage.

An underwater type water storage device has been recently proposed, and is of a type in which a bag-shaped structure is submerged in the sea and rainwater or water from a river is purified and stored therein.

[0005]

However, the above conventional water storage device has the following problems.

[0006] The land-based water storage device has a large installation space in the water storage tank, and therefore has a problem that installation is greatly restricted.

[0007] The underwater type water storage device is good in the area near the sea, but it cannot be used in the inland area, and in addition, it is necessary to install water purification equipment on land, and there is a problem that the installation location is restricted. In addition, since it is installed in the sea where the natural environment is severe, the device becomes large in size, which is not suitable for small-scale use in a small area.

Further, in both the land type and the underwater type water storage device, when the water source is requested from a lake or the like, if it is attempted to secure a sufficient water storage amount in a season with little rainfall, the lake or the water source becomes It will lower the water level.
This lowering of the water level of the water source not only makes the surface of the sunken submerged water unexposed and makes the scenery uncomfortable, but it also hinders its use when there are incidental equipment such as boats.

On the other hand, especially small lakes, ponds, moats, etc. exist in a relatively large number of areas, and although there is a sufficient amount of water as a water source for small-scale use in a small area, water pollution in recent years In many cases, it cannot be used as it is, and since it has the above-mentioned problems even when it is purified and stored, it is the present condition that it is hardly used as a water source.

The present invention has been made in view of such a situation as described above, and it can be applied to the water of small lakes, ponds, moats and the like existing in many areas without causing problems of storage places and lowering of water level. The purpose is to enable simple and stable effective use.

[0011]

For this reason, in the invention of claim 1, as shown in FIG. 1, a flexible tank 1 located underwater, and a flexible tank 1 to a water surface 2 are provided.
Located on the water surface 2 and the injection port 3 protruding to
A filter 6 in which a filter medium 5 is filled inside a water intake hole 4 provided below the water surface 2, and a pump 8 for sending filtered water 7 in the filter 6 that has passed through the filter medium 5 to a water injection port 3 of a flexible tank 1. It is an underwater water storage device having.

Further, in the invention of claim 3, as shown in FIG. 2, the flexible tank 1 located in water, and the flexible tank 1 connected to the bottom and located on the water surface 2, This is an underwater water storage device having a filter 6 in which the filter medium 5 is filled on the connecting portion of the above and a pump 8 for pumping the water in the flexible tank 1 into the filter 6.

[0013]

The flexible tank 1 stores filtered water, and by being flexible, it is expanded as the amount of water stored therein increases. And
Due to the fact that this flexible tank 1 is located in water and that the water in which the flexible tank 1 is submerged (hereinafter referred to as "outside water") itself is filtered by the filter 6 and stored in the flexible tank 1. In other words, the flexible tank 1 is expanded and the outer water level is raised according to the lowering of the outer water level due to the intake of the outer water, so that the outer water level is kept constant.

According to the first aspect of the invention, the water intake hole 4 is provided below the water surface 2 of the filter 6 which is half-submerged above the water surface 2, because the difference in head pressure between the inside and outside of the filter 6 causes the outside water to flow. Is introduced into the filter 6 and is transmitted through the filter medium 5. Further, the pump 8 for sending the filtered water 7 in the filter 6 to the water injection port 3 projecting above the water surface 2 is provided because the filtered water has a head pressure higher than the water pressure of the external water applied to the periphery of the flexible tank 1. Is sent into the flexible tank 1 so that the flexible tank 1 can be expanded.

In the invention of claim 3, the flexible tank 1 is connected to the bottom of the filter 6, and the filter 6
A pump 8 for drawing in external water is provided to filter the external water by utilizing the hydraulic head pressure in the filter 6 and at the same time as the hydraulic head pressure higher than the external water pressure applied to the periphery of the flexible tank 1. The filtered water can be sent into the flexible tank 1.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, an embodiment of the invention of claim 1 will be described with reference to FIG.

In the figure, reference numeral 1 denotes a flexible tank, which is located under the water surface 2. A water injection head pipe 10 is erected at the center of the upper surface of the flexible tank 1, and an upper end of the water injection head pipe 10 is a water injection port 3 protruding above the water surface 2.

On the upper and lower surfaces of the flexible tank 1,
An upper plate 11 and a lower plate 12 each having a mortar shape are attached. The upper plate 11 and the lower plate 12 are made of a hard material such as a hard synthetic resin plate, a metal plate, or a wooden plate, and the inner surfaces of the upper surface and the lower surface of the flexible tank 1 are maintained in a shape inclined toward the center thereof. To do.

When the filtered water 7 is injected from the water injection head tube 10, the upper plate 11 guides the air remaining in the flexible tank 1 to the water injection head tube 10 along the inclination of the air so that the air easily escapes to the outside. It is a thing. If the air remaining in the flexible tank 1 does not escape, the residual air that is pressurized when the filtered water 7 is injected causes the flexible tank 1 to deform and expand and be easily damaged. It is preferable to allow the residual air inside to escape easily. Also, the lower plate 1
2 is a flexible tank 1 via the water injection head pipe 10.
When the water is collected by the water collecting pipe 13 that also functions as an indicator and is inserted into the inside, it is easy to take out the filtered water in the flexible tank 1 without leaving it, and it is preferable to provide it.

The water collection can be performed by connecting the water collection pipe 13 to the bottom of the flexible tank 1 in advance without inserting the water collection pipe 13 from the water injection head pipe 10.

A peripheral side portion of the flexible tank 1 is a bellows-shaped flexible film 14 which is vertically expandable and contractible.

As long as the flexible tank 1 is made of a waterproof material, it may be flexible such as a balloon due to the stretchability of the constituent material itself. However, in order to secure the strength of the flexible tank 1 and allow the flexible tank 1 to be spread and spread with a force as small as possible, it is preferable that the flexible tank 1 has flexibility by folding and unfolding as in this embodiment. Further, in addition to the vertically expandable and contractible one as in the present embodiment, the laterally expandable and contractible one may be used.

On the other hand, a box-shaped filter 6 is located above the water surface 2. The filter 6 is attached to an intermediate portion of the water injection head tube 10 penetrating the bottom surface thereof, and is located on the water surface 2 in a semi-submerged state.

At the bottom of the filter 6 located below the water surface 2,
A water intake hole 4 for taking in outside water into the filter 6 is formed. The water intake hole 4 may be a mesh formed on the bottom of the filter 6 or a mesh of a mesh-like material forming the bottom of the filter 6. The filter 6 is filled with a filter medium 5 inside the water intake hole 4.

Therefore, the outside water naturally flows into the filter 6 through the water intake hole 4 that opens below the water surface 2, and as the filtered water 7 that has passed through the filter medium 5, reaches a level at which the head pressure inside and outside the filter 6 is balanced. It will be stored in the filter 6.

The filter 6 shown in the figure is open at the top in order to facilitate replacement of the filter medium 5, but a lid or the like may be provided to close the filter medium 5 in order to prevent the entry of dust and the like. Also,
The filter medium 5 may be appropriately selected depending on the purpose of use of the water to be stored.

Around the filter 6, the above-mentioned flexible tank 1 and the float 15 for supporting the filter 6 in a floating manner.
Is provided. That is, the float 15 is floated and supported so that the flexible tank 1 is located below the water surface 2 and the filter 6 is half-submerged above the water surface 2.

The flexible tank 1 and the filter 6 are not integrated as in the present embodiment, but are separately provided as floats 1.
Alternatively, the flexible tank 1 and the filter 6 which are integral or separate may be supported at a predetermined position by a column or the like standing on the water bottom. However, it is preferable that the flexible tank 1 and the filter 6 are integrally floated and supported by the float 15 as in the present embodiment because the installation configuration is the simplest.

A solar array 16 and a pump 8 are provided on the float 15. This pump 8 is a solar cell motor pump driven by a solar array 16,
The pumped water pipe 17 sends the filtered water 7 in the filter 6 to the water injection port 3 at the upper end of the water injection head pipe 10.

By the way, since the present submersible water storage device can be provided as needed by accumulating it in the flexible tank 1 while always filtering the external water, a large filtration speed and a large flow rate are required as the filter 6. The pump 8 is not required to have a large flow rate. Therefore, since the pump 8 can be extremely small and its driving power can be small, a system in which the power source is externally drawn may be used, but the pump 8 can be a solar battery motor pump as in this embodiment. preferable.

In the underwater water storage apparatus of this embodiment, assuming that the height difference between the water surface 2 of the outside water and the water surface of the filtered water 7 is 16 cm and the filter medium 5 has a permeability coefficient of 10 ^-3 , the filtration rate is , The filtration flow rate, the filtration area, and the thickness of the filter medium 5 are calculated as follows.

Filtration rate 0.1 m / hr Filtration flow rate 0.03 m ³ / hr Filtration area 0.3 m ² Thickness of filter medium 5 0.06 m As mentioned above, considering that the filtration water can be continuously stored, the above-mentioned filtration flow rate is practically used. In this case, a pump of about 1 liter / minute × 0.3 m head is sufficient for this filtration flow rate, so that a solar battery motor pump can be sufficiently applied as the pump 8.

Next, an embodiment of the invention of claim 3 will be described with reference to FIG.

The flexible tank 1 in this embodiment is the same as that described in the above-mentioned embodiment of the invention of claim 1, and is a flexible membrane 14 having a bellows-like shape on the peripheral side and an upper plate on each of the upper and lower surfaces. 11 and a lower plate 12 are attached.

On the upper part of the flexible tank 1, a filter 6 is attached continuously to the flexible tank 1.

The filter 6 has a partition plate 18 such as a perforated plate or a net-like material at the bottom, and the filter medium 5 is filled on the partition plate 18. Further, in the center of the filter 6, a water collection pipe insertion tube 9
The water collecting pipe 13 is inserted into the flexible tank 1 through the water collecting pipe inserting cylinder 9.

As described in the embodiment of the invention of claim 1, the water collecting pipe 13 can be connected to the bottom of the flexible tank 1 in advance. In this case, the water collection pipe insertion tube 9
Can be omitted.

Around the filter 6, a flexible tank 1 and a float 15 that floats and supports the filter 6 are provided. Also in this embodiment, the flexible tank 1 and the filter 6 can be supported at a predetermined position by a column or the like standing on the water bottom. However, it is preferable that the float 15 is floatably supported because the installation configuration is the simplest.

A pump 8 and a solar array 16 are provided on the float 15. Pump 8 in this embodiment
Is for pumping outside water to the filter 6 through the pumping pipe 17.

In this embodiment, when the external water is pumped up to the filter 6, the water level in the filter 6 becomes higher than the water level 2 of the external water, so that the water head pressure that overcomes the water pressure applied around the flexible tank 1. The filtered water that has passed through the filter medium 5 flows down into the flexible tank 1 and spreads it.

[0041]

The present invention is as described above and has the following effects.

(1) Since water is stored in lakes, ponds, moats, etc., it is not necessary to prepare a new installation site.

(2) The water levels of lakes, ponds, moats, etc., which are also water sources, do not change even if the amount of water stored changes, so the surface of the water that is normally submerged is exposed and damages the scenery, and incidental equipment such as boats. Does not interfere with the use of.

(3) By adjusting the size and number of the flexible tanks 1, the amount of stored water can be set arbitrarily.

(4) Since the water is stored in the water source, there is no problem even if the water is overfilled and overflows, and there is no overflow accident. Further, since the filtered water is supplied to the flexible tank 1 by utilizing the head pressure, the balance is naturally maintained even if the function of the pump 8 is not strictly defined, and no special control is required.

(5) Since the water can be constantly taken from the water source and gradually stored in the flexible tank 1, the large-flow high-speed filter 6
Is unnecessary, small size and simple slow filtration can be applied, and the facility burden is small. At the same time, the pump 8 can be small in size, and a solar battery motor pump can be applied.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the invention of claim 1.

FIG. 2 is a sectional view showing an embodiment of the invention of claim 3;

[Explanation of symbols]

 1 Flexible Tank 2 Water Surface 3 Water Injection Port 4 Water Intake Hole 5 Filter Material 6 Filter 7 Filtered Water 8 Pump 9 Water Collection Tube Insert Tube 10 Water Injection Head Tube 11 Upper Plate 12 Lower Plate 13 Water Collection Pipe 14 Flexible Membrane 15 Float 16 Solar Array 17 Pumped Water Tube 18 partition board

Claims (4)

[Claims] 1. A flexible tank located underwater,
An inlet protruding from the flexible tank to the surface of the water, a filter that is located half-submerged above the surface of the water, has a filter material filled inside the water intake hole provided below the surface of the water, and a filter inside the filter that has passed through the filter material. An underwater water storage device comprising: a pump for sending filtered water to a water injection port of a flexible tank. 2. A float, which floats and supports the filter and the flexible tank, is provided.
Underwater water storage device. 3. A flexible tank located underwater,
The flexible tank is connected to the bottom and is located above the water surface, and has a filter having a filter material filled on the connection with the flexible tank, and a pump for pumping outside water into the filter. Underwater water storage device. 4. A float, which floats and supports the filter and the flexible tank, is provided.
Underwater water storage device.