JP3881064B2 - Water storage tank - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a water storage tank that stores and stores rainwater, tap water, or the like for use in fire prevention, sprinkling or drinking.
[0002]
[Prior art]
As a water storage tank for storing fire prevention water or the like, it is known that it is made of concrete or the like installed on the ground or underground. Some of these are filled with tap water and stored, and others are stored with rainwater introduced. Similar wooden tanks are also known, but these are limited to small ones.
[0003]
Many of these water storage tanks have a peripheral wall made of concrete and are buried underground. Although not publicly known, this type of water storage tank may have a structure in which an internal space for water storage is held by a space holding member and its periphery is surrounded by a flexible sheet member. This is also constructed by being buried underground.
In contrast to the former, the latter is easy to construct and can be constructed at low cost, and the latter has the advantage that it is more resistant to earthquakes, etc. In either case, the surrounding groundwater level rises due to rainfall, etc. In addition, when the stored water in the tank is reduced for some reason, there arises a problem that the storage tank itself is pushed up by the buoyancy generated by the groundwater and the ground surface of the buried position is raised. There is a fear.
[0004]
[Problems to be solved by the invention]
In the present invention, the above-mentioned problems of the water storage tank are solved, and even if the groundwater level around the buried position rises when the stored water in the water storage tank decreases, it is pushed up by the groundwater level. The problem to be solved is to provide a water storage tank without any problems.
[0005]
[Means for Solving the Problems]
The present invention is a water tank main body buried underground, a water tank main body provided with an internal water pumping port in a part thereof,
Introducing groundwater with an introduction port with a float member around it at the top to move up and down in response to the rise and fall of the water level in the main body of the water tank and to always be positioned above the water level in the main body of the water tank A groundwater introduction pipe composed of a bellows-like pipe body that is stretchable,
A groundwater introduction space configured on the outer side of the water storage tank body, the groundwater introduction space communicating with a lower end of the groundwater introduction pipe configured in the water storage tank body via a groundwater introduction path communicating with a lower part; ,
It is a water storage tank composed of
[0006]
Therefore, according to the water storage tank of the present invention, the inlet that is the upper end opening of the groundwater introduction pipe moves up and down with the water level in the water storage tank, and is always located at a height slightly exceeding the water level. Therefore, when the groundwater level becomes higher than the water level in the water storage tank, the groundwater introduced into the groundwater introduction space rises to the same height as the groundwater introduction pipe and is supplied into the water storage tank from the introduction port. The Rukoto.
[0007]
On the other hand, when the water level in the water storage tank is higher than the groundwater level, the inlet at the upper end of the groundwater introduction pipe rises to a position slightly higher than the water level in the tank. There is no more overflow. Of course, at this time, groundwater does not enter the storage tank.
[0008]
Therefore, the water level in the water storage tank does not fall below the groundwater level, and even if the groundwater level rises due to rainfall conditions and other reasons, as described above, the water level in the water storage tank will exceed this level. The water storage tank is pushed up by the groundwater level, and there is no problem of pushing up the ground surface of the buried area.
[0009]
Needless to say, this water tank is useful as a general water tank without any particular difference. In addition, when the water level falls below the groundwater level, there is an advantage that groundwater can be introduced and used effectively. is there.
[0010]
Incidentally, in the present invention, because of the configuration of the ground water inlet piping telescopic bellows-like pipe, as described above, to raise and lower in correspondence of the inlet port of the upper end to the water level in the water storage tank Convenient.
[0011]
Also arranged float member around the inlet, whereby since that is configured to raise and lower the inlet in accordance with the water level in the water storage tank, accurately lift the inlet in accordance with the water level in the water storage tank Can be done.
[0012]
The float member can be provided with a guide member that guides its lifting and lowering, and in this case, the float member can be moved only in a necessary lifting direction without moving in a useless direction. be able to.
[0013]
The ground water introduction space, as described above, the but those arranged on the side of the cistern body, which Ru can be configured in a vertical cylindrical space. In the groundwater introduction space configured in this manner, groundwater is introduced into the groundwater level according to the groundwater level, and when the water level falls below the water level in the water storage tank, the groundwater is guided into the water storage tank through the groundwater introduction pipe. . In this way, the water level in the water storage tank can always be kept below the groundwater level.
[0014]
The water storage tank main body can be configured by surrounding the internal space for water storage with a concrete peripheral wall and upper and lower parts, and in this case, the tank main body can be configured by a conventional technique.
[0015]
The water storage tank body can be configured by filling the internal space for storing the water with the skeletal member for holding the internal space and surrounding them with a flexible sheet. Can also have an advantage that the peripheral wall portion is not easily broken.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail based on examples with reference to the accompanying drawings.
1 and 2 show an embodiment of the present invention. FIG. 1 is a schematic cross-sectional explanatory view thereof, and FIG. 2 is a schematic cross-sectional view taken along line AA of FIG.
[0017]
In this example, as shown in FIG. 1, the water storage tank body 1 is made of concrete in a rectangular parallelepiped box shape and embedded in the ground. The top plate portion 1a is formed with a pumping port 2 having a structure in which a pipe body is erected, and a lower opening 1b communicating with a groundwater introduction space 3 described later is opened at the lower center. The upper end of the pumping port 2 is opened on the ground surface GL and is covered with a detachable lid 4. In addition, four guide rods 5, 5... Are erected in the lower opening 1b, and a groundwater introduction pipe 6 composed of a bellows-like pipe body is disposed so as to cover the guide rods.
[0018]
The lower end of the groundwater introduction pipe 6 is fixed to the lower opening 1b, and a ring-shaped float member 7 is coupled to the upper end via four coupling arms 8, 8,. The upper end of the groundwater introduction pipe 6 opens upward, and serves as an introduction port 6a into the groundwater storage tank body 1.
[0019]
The four coupling arms 8, 8... Extend inside the ring-shaped float member 7 at a constant angular interval of 90 degrees, and the guide rods 5, 5 are respectively inserted into through holes opened at the inner ends thereof. ... so that the ring-shaped float member 7 moves only in the up-and-down direction.
[0020]
The groundwater introduction space 3 is formed on the side of the water storage tank body 1. As shown in FIG. 1, the groundwater introduction space 3 is configured as a vertical cylindrical space whose upper end coincides with the upper end of the water storage tank body 1 and whose lower end is lower than that. The introduction path 9 is extended and connected to the lower opening 1 b of the water storage tank body 1.
[0021]
Therefore, according to the water storage tank of this embodiment, as a normal water storage tank, it is needless to say that the water inside the water storage tank can be pumped out and used for fire prevention and drinks. Even if it fluctuates, this will be pushed up, and problems such as raising the ground surface of the buried region will not occur.
[0022]
Needless to say, when the water storage tank main body 1 is filled with water, it is possible to remove the lid 4 of the pumping port 2 and guide tap water or the like through a hose or the like and let it flow down. . Needless to say, when the water is pumped out for other purposes for fire prevention, the pumping port 2 is used.
When the water is filled as described above, the ring-shaped float member 6 rises as the water level in the water storage tank body 1 rises due to the flow of water, and the inlet at the upper end of the groundwater introduction pipe 6 6a is raised. Therefore, even if the water level in the water tank main body 1 rises, the inlet 6a also rises at the same time, so that the water that has flowed into the water tank main body 1 does not flow outside.
[0023]
Further, as described above, when the water in the water storage tank body 1 is used for fire prevention and the like and the water level is lowered, the ring-shaped float member 6 is also lowered, and the introduction port 6a is also moved accordingly. Needless to say, since it does not drop below the water level, there is no problem that the water in the water tank main body 1 overflows from the inlet 6a.
[0024]
On the other hand, when the groundwater level rises due to rainfall or the like and rises above the water level in the water storage tank body 1, the groundwater introduction space 3 and the groundwater introduction pipe 6 communicate with each other through the groundwater introduction channel 9, so that naturally the groundwater is groundwater. It rises to the same water level in the introduction pipe 6 and flows into the water tank main body 1 from its introduction port 6a which slightly exceeds the water level in the water tank main body 1.
[0025]
Thus, when the water level in the water tank main body 1 is higher than the ground water level, the float member 7 raises the inlet 6a, which is the upper end of the ground water introduction pipe 6, to the height thereof, so that the water in the water tank main body 1 is external. However, when the water level in the water storage tank body 1 becomes lower than the groundwater level, the inlet 6a is lowered together with the float member 6 that falls accordingly, The water is introduced into the water tank main body 1 from the introduction port 6a until the same water level is reached.
[0026]
Therefore, since the water level in the water tank main body 1 can always maintain a height equal to or higher than the ground water level, the water tank main body 1 is pushed up by the ground water level and swells the ground surface in the region where it is embedded. Such a problem does not occur at all.
In addition, when the water level in the water storage tank body 1 is lowered and the groundwater level is higher than that, it is possible to effectively use the groundwater by introducing it.
[0027]
【The invention's effect】
According to the water storage tank of the present invention, the inlet, which is the upper end opening of the groundwater introduction pipe, moves up and down with the water level in the water storage tank, and the inlet is always at a height slightly exceeding the water level. It is what is located.
Therefore, when the groundwater level becomes higher than the water level in the water storage tank, the groundwater introduced into the groundwater introduction space rises to the same height in the groundwater introduction pipe, and as a result, is supplied to the water storage tank from the introduction port. The Rukoto.
[0028]
On the other hand, when the groundwater level is lower than the water level in the water storage tank, the inlet that is the upper end of the groundwater introduction pipe is located slightly higher than the water level in the water storage tank. There is no more overflow.
[0029]
Eventually, the water level in the water storage tank does not fall below the groundwater level. Therefore, even if the groundwater level rises due to rainfall conditions, etc., the water storage tank is pushed up, and the water storage tank is buried in the ground. It does not cause a problem that swells the surface.
[0030]
In addition, this water storage tank is not particularly different as a general water storage tank, and needless to say, it can be used effectively for storage of fire prevention water or storage of drinking water. In addition, groundwater can be used effectively. There are also advantages.
[0031]
Note In the above invention, because of the configuration of the ground water inlet piping telescopic bellows-like pipe, it is advantageous to raise and lower in correspondence of the inlet port of the upper end to the water level in the water storage tank.
[0033]
When the float member is provided with a guide member that guides its elevation, the float member moves only in the required elevation direction without moving in a useless direction.
[0034]
As described above, the groundwater introduction space is disposed on the side of the water storage tank main body, and can be configured as a vertical cylindrical space . In the groundwater introduction space configured in this way, groundwater is introduced therein according to the groundwater level, and when the water level falls below the water level in the water storage tank, the groundwater is guided into the water storage tank through the groundwater introduction pipe. . Thus, the water level in the water storage tank can always be kept below the groundwater level.
[0035]
When the water storage tank main body is configured by surrounding the internal space for water storage with the peripheral wall and the upper and lower parts of the concrete, the tank main body can be configured by a conventional technique.
[Brief description of the drawings]
FIG. 1 is a schematic cross-sectional explanatory view showing an embodiment.
FIG. 2 is a schematic cross-sectional view taken along line AA in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Water storage tank main body 1a Top plate part 1b Lower opening 2 Outlet 3 Groundwater introduction space 4 Lid 5 Guide rod 6 Groundwater introduction piping 6a Inlet 7 Float member 8 Coupling arm 9 Groundwater introduction path GL Ground surface

Claims (4)

A water tank main body buried underground, and a water tank main body provided with an internal water pumping port in a part thereof;
Introducing groundwater with an introduction port with a float member around it at the top to move up and down in response to the rise and fall of the water level in the main body of the water tank and to always be positioned above the water level in the main body of the water tank A groundwater introduction pipe composed of a bellows-like pipe body that is stretchable,
A groundwater introduction space configured on the outer side of the water storage tank body, the groundwater introduction space communicating with a lower end of the groundwater introduction pipe configured in the water storage tank body via a groundwater introduction path communicating with a lower part; ,
A water tank composed of The water storage tank according to claim 1, wherein the float member is provided with a guide member that guides its elevation . The water storage tank according to claim 1 or 2, wherein the groundwater introduction space is configured as a vertical cylindrical space . The water storage tank according to claim 1, 2 or 3, wherein the water storage tank body is configured by surrounding an internal space for water storage with a concrete peripheral wall and upper and lower parts .

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