JPH10310194A - Air tube type liquid tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique which prevents the liquid in an air tube type liquid tank from leaking out thereof and makes the production costless and easy. SOLUTION: A plurality of ring-shaped air tubes 2,... are stacked and the connection parts thereof are partly joined with connection pieces 6,.... An inside face sheet 4 is stuck on the inside of an air chamber and a bottom cloth is stuck on the bottom face of the air tube 2 of the lowermost stage and hermetically sealed. Further, a part of a discharge pipe 5 is made of a flexible material and extended along the outside face of the liquid tank 1 to the upper side and then fixed to the upper face of the air tube 2 of the uppermost stage with a fixing piece 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved technology of an air tube type liquid tank used for, for example, a water storage tank.

[0002]

2. Description of the Related Art Conventionally, for example, in a storage tank for storing drinking water, firefighting water, and other liquids, or in a home swimming pool, there is a technique of forming a liquid tank by stacking a plurality of annular air tubes. It is known that when it is used, it only needs to put air into the air chamber, and when it is not used, it can be folded and stored, requiring no space, so it is useful as a simple liquid tank.

As such an air tube type liquid tank,
There are two types: a type that forms a liquid tank using an inner sheet inside, and a type that forms a liquid tank by sealing the joint of air tubes without using an inner sheet. As an example, a structure as shown in FIGS. 7 and 8 is known. In this liquid tank 51, a V tape 53 having a shape as shown in FIG. 9 (A) is adhered to a joint between a plurality of stacked annular air tubes 52,. A bottom cloth 54 is adhered to the lowermost air tube 52 to make the internal space a liquid storage section.

[0004] By the way, such an air tube 52
In general, an annular shape is not adopted because of the difficulty of manufacturing, the effective use of materials, the manufacturing cost, etc., and a straight columnar tube is joined into a polygonal shape to form an annular shape. In general, the V tape 53 is also formed of one tape from the viewpoint of improving liquid tightness, and at a portion corresponding to a corner, as shown in FIG. , V-tape 53 is commonly used.

[0005] Generally, in order to discharge the liquid from the liquid storage section, for example, as shown in FIGS. 7 and 8, a discharge pipe 5 is provided at a predetermined position of the joint between the lowermost air tube 52 and the bottom cloth 54.
In general, a detachable blind plug 56 or the like is provided at the tip of the discharge pipe 55 by providing the inner pipe 5 and the inner pipe 5.

[0006]

However, the above-described air tube type liquid tank 51 is, as shown in FIG.
There is a problem that the liquid easily leaks from the polygonal corners (circles). That is, as is clear from the bent state of the V tape 53 in FIG. 9B, many portions where the tape overlaps occur at the bent portion of the tape 53, and the overlapping surface of the tape is completely formed at the overlapping portion. This is because if they are not bonded, a gap will be formed, and a gap is more likely to be formed than in other places. For this reason, it is necessary to take measures such as filling the corner portion with a caulking material or the like to make the liquid-tightness complete, if necessary. In this case, there has been a problem that the number of steps is increased.

On the other hand, the tip of the discharge pipe 55 protrudes near the ground near the liquid tank 51. For example, a worker who is working around the liquid tank 51 touches the discharge pipe 55 to blind plug. If the portion 56 comes off, there is a problem that the liquid inside leaks unexpectedly. Further, even when the liquid inside is to be discharged into a predetermined container, for example, the length of the discharge pipe 55 is short and does not reach the inside of the container. When a treatment is required and the liquid tank 51 is heavy, it may be difficult.

Therefore, the present invention improves the liquid tightness of an internal liquid storage part in an air tube type liquid tank, and at this time, provides a technique for reducing the manufacturing cost and facilitating the manufacturing. It is an object of the present invention to provide a discharge pipe structure that does not cause liquid to leak out of the discharge pipe even when working around, and discharges the liquid into a predetermined container or the like.

[0009]

In order to achieve the above object, according to the present invention, a plurality of annular air tubes are stacked and joined together, and the lowermost air tube of the uppermost air tube is arranged from the inner surface side of the air chamber. The inner sheet was stuck to the inner side of the air chamber of the air tube, and the bottom cloth was stuck to the lowermost air tube.

In this way, if the inner sheet is adhered from the inner surface of the air chamber of the uppermost air tube to the inner surface of the air chamber of the lowermost air tube, the joint between the air tubes does not have a liquid-tight structure. Even so, the inner peripheral surface can be securely sealed, and such an attaching operation can be performed relatively easily. Here, the inner sheet and the air tube are adhered in a liquid-tight manner with, for example, an adhesive, and the wider the width of the adhesive, the better the liquid-tightness. A degree is enough. Also, the inner sheet needs to be attached to at least the uppermost air tube and the lowermost air tube in a liquid-tight manner,
It does not necessarily have to be attached to the middle air tube.

Further, in the second aspect, the joining of the air tubes is partially joined to be partially joined. That is,
As described above, the joint between the air tubes does not need to have a liquid-tight structure, but may be merely joined. Therefore, the contact surfaces are partially joined without joining over the entire area. By doing so, the joining operation can be further simplified, and the structure can be reduced.

According to a third aspect of the present invention, there is provided an air tube type liquid tank in which a plurality of annular air tubes are stacked to form a liquid tank therein, and a discharge pipe is connected to a discharge port of the liquid tank. Is made of a flexible material so that it can extend upward along the outer surface of the air tube, and at least the extending end is the highest position on the upper surface of the uppermost air tube. Length that exceeds
In addition, the uppermost air tube is provided with locking means for detachably fastening the discharge pipe.

When the liquid is stored, the discharge pipe is extended upward along the outer surface of the air tube, and the extended end is located beyond the uppermost position of the upper surface of the air tube. In this case, there is no danger of the liquid in the liquid tank leaking out of the discharge pipe even if the discharge pipe is not closed with a blind plug or the like.
Further, when discharging the liquid, if the locking means is unlocked and the outlet end of the discharge pipe is lowered below the liquid level, the liquid is discharged as it is, so that the discharging operation is easy. Further, even when the liquid is discharged into a predetermined container, the liquid can be easily extended into the container because the discharge pipe is long, so that the operation can be easily performed.

According to a fourth aspect, the liquid tank of the first aspect and the discharge pipe of the third aspect are combined. That is, a plurality of annular air tubes are stacked and joined, and an inner sheet is attached from the inner surface side of the air chamber of the uppermost air tube to the inner surface side of the air chamber of the lowermost air tube, and the lowermost air tube is attached. A liquid tank is formed by attaching a bottom cloth to the tube, and at least a part of the discharge pipe is made of a flexible material in an air tube type liquid tank in which a discharge pipe is connected to a discharge port of the liquid tank. To be able to extend upward along the outer surface of the air tube,
At least the extension end is longer than the highest position on the upper surface of the uppermost air tube, and the uppermost air tube is provided with locking means for detachably engaging the discharge pipe.

With such a structure, the liquid tightness of the liquid storage portion is improved, leakage from the discharge pipe can be reliably prevented, and the operation of discharging the liquid from the discharge pipe can be performed easily. Moreover, it is convenient to discharge the liquid into another container or the like.

[0016]

Embodiments of the present invention will be described with reference to the accompanying drawings. Here, FIG. 1 is a plan view of an air tube type liquid tank according to the present invention, FIG. 2 is a longitudinal sectional view of the same, FIG. 3 is a perspective view of a joint piece, FIG. FIG. 6 is an example of a configuration in a case where air tubes are provided in two stages, and FIG. 6 is an enlarged view of a mounting portion of a discharge pipe.

The air tube type liquid tank 1 according to the present invention comprises:
As shown in FIGS. 1 and 2, a plurality of annular air tubes 2, stacked and joined, a bottom cloth 3 adhered to the bottom surface of the lowermost air tube 2, and an inner peripheral surface An inner sheet 4 to be attached is provided, and a discharge pipe 5 is provided at a predetermined position between the lowermost air tube 2 and the bottom cloth 3.

In the present invention, when the liquid is stored inside the air tube 2 surrounded by the air chamber, the liquid is hardly leaked and the liquid is discharged from the discharge pipe 5 in a convenient manner. .

The air tube 2 is formed by joining a columnar tube having a circular cross section made of a resin laminated sheet or a rubberized cloth to form a polygonal annular peripheral wall. The contact portions of the air tubes 2, 2 are partially joined by joining pieces 6,.

That is, the joining piece 6 is formed by forming a material such as a resin sheet or a rubberized cloth into a shape as shown in FIG. 3, and as shown in FIG. It is fixed to the upper surface of the air tube 2 by bonding or the like. The bottom cloth 3 is also made of a material having excellent wear resistance such as a resin laminated sheet or a rubberized cloth.
And the inside of the joint is reinforced with a reinforcing tape 8.

The inner sheet 4 is made of, for example, a rubberized cloth,
Using a material such as a resin sheet, at least the inner surface of the uppermost air tube 2 and the inner surface of the lowermost air tube 2 are joined in a liquid-tight manner by bonding or the like over the entire area in the inner circumferential direction. doing. Here, the wider the bonding width to the air tube 2 is, the more the liquid-tight effect can be improved, but it is usually sufficient if the width is about 3 to 8 cm.

Further, there is no particular need to attach to the air tube 2 at the intermediate portion, but the attachment is free. Incidentally, in the case where the liquid tubes are formed by stacking the air tubes 2 in two stages, the inner sheet 4 is attached to the inner surfaces of the upper and lower air tubes 2, 2 as shown in FIG. 5.

Here, in the case of the embodiment, the inner sheet 4 is
A plurality of sheets (eight sheets) are adhered to each side according to the inner shape of the polygon, and the joints of each sheet are also sealed by bonding etc., but one sheet is used. May be attached to the entire circumference.

As shown in FIG. 6, the discharge pipe 5 is made of a relatively hard material such as PVC provided through a reinforcing tape 8 between the lowermost air tube 2 and the bottom cloth 3 at a predetermined location. And an extension pipe 5b made of a flexible material such as EVA or rubber, which is connected to an end of the extraction pipe 5a. The length of the discharge pipe 5 is shown in FIGS. As is clear from 2, when extended upward along the outer surface,
It extends further beyond the upper surface of the uppermost air tube 2. Although the drawing shows the extension tube 5a in the shape of a hose having a cross-sectional area, it is actually formed of a soft rubber tube or the like which is flattened and has no cross-sectional area.

A locking piece 7 is provided on the upper surface of the uppermost air tube 2 as locking means for locking the discharge pipe 5 along the upper surface. Fastening and release of the discharge pipe 5 can be freely performed by a hook-and-loop fastener or the like.

In the air tube type liquid tank 1 constructed as described above, when liquid is stored inside, the peripheral surface is securely sealed by the inner sheet 4 and the bottom surface is securely sealed by the bottom cloth 3. No liquid leakage occurs. Further, since the discharge pipe 5 is fastened in a state as shown in FIGS. 1 and 2 and at least a part of the discharge pipe 5 is higher than the liquid level, no liquid leakage occurs from the discharge pipe 5.

Next, when discharging the liquid, it is possible to discharge the liquid by removing the locking piece 7 and lowering the tip of the discharge pipe 5 below the liquid level. Also, for example, when discharging the liquid into another container or the like, Since the length of the discharge pipe 5 is long, the liquid tank 1 can be easily operated without having to lift it.

The present invention is not limited to the above embodiment. It is needless to say that components having substantially the same configuration as those described in the claims of the present invention and exhibiting the same functions and effects are included in the technical scope of the present invention. For example, the shape and the like of the peripheral wall of the air tube 2 may be other shapes, and the materials and the like of the air tube 2, the inner sheet 4, and the bottom cloth 3 are also arbitrary. Optional.

[0029]

As described above, in the air tube type liquid tank of the present invention, the inner surface of the stacked air tubes extends from the inner surface of the uppermost air chamber to the inner surface of the lowermost air chamber. Since the sheet is stuck and the bottom cloth is stuck to the bottom air tube, it can be securely sealed from the inner peripheral surface to the bottom surface, and such an adhering operation is relatively easy. The operation is extremely simple because there is no need to employ a liquid-tight structure for the air tube. If the air tubes are partially joined to each other as in claim 2, the joining operation can be further simplified and the cost can be reduced.

According to a third aspect of the present invention, at least a part of the discharge pipe is made of a flexible material, and extends upward along the outer surface of the air tube so that at least the extended end is the uppermost step. If the length of the air tube exceeds the highest position on the upper surface of the air tube, and the uppermost air tube is provided with a locking means for detachably engaging the discharge tube, leakage of the liquid from the discharge tube is reliably prevented. And the length is long, it is possible to correspond to various discharge modes. As described in claim 4, when the liquid tank of claim 1 and the discharge pipe of claim 3 are combined, the liquid tightness of the liquid storage part is improved, and leakage from the discharge pipe is reliably prevented. The operation for discharging the liquid from the discharge pipe can be easily performed.

[Brief description of the drawings]

FIG. 1 is a plan view of an air tube type liquid tank according to the present invention.

FIG. 2 is a longitudinal sectional view of the same.

FIG. 3 is a perspective view of a joining piece.

FIG. 4 is a partially enlarged view of a joined state of an air tube.

FIG. 5 is a configuration example diagram in a case where air tubes are provided in two stages.

FIG. 6 is an enlarged view of a mounting portion of the discharge pipe.

FIG. 7 is a plan view of a conventional air tube type liquid tank.

FIG. 8 is a longitudinal sectional view of a conventional air tube type liquid tank.

9A and 9B are explanatory diagrams of a conventional V tape, in which FIG. 9A is a use state diagram at a straight portion, and FIG. 9B is a use state diagram at a folding portion.

FIG. 10 is an explanatory view of a leaking part of a conventional air tube type liquid tank.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Liquid tank, 2 ... Air tube, 3 ... Bottom cloth, 4 ... Inner sheet, 5 ... Discharge pipe, 7 ... Locking piece.

Claims (4)

[Claims] A plurality of annular air tubes are stacked and joined, and an inner sheet is attached from the inner surface of the air chamber of the uppermost air tube to the inner surface of the air chamber of the lowermost air tube. An air tube type liquid tank wherein a bottom cloth is attached to a lower air tube. 2. The air tube type liquid tank according to claim 1, wherein the air tubes are partially joined to each other. 3. An air tube type liquid tank in which a plurality of annular air tubes are stacked to form a liquid tank therein, and a discharge pipe is connected to an outlet of the liquid tank. At least a portion is made of a flexible material so that it can be extended upward along the outer surface of the air tube, and at least the extended end is positioned at the highest position of the upper surface of the uppermost air tube. An air tube type liquid tank characterized in that the length of the air tube exceeds the length of the air tube, and the uppermost air tube is provided with a locking means for detachably fastening the discharge tube. 4. A plurality of annular air tubes are stacked and joined, and an inner sheet is attached from the inner surface side of the air chamber of the uppermost air tube to the inner surface side of the air chamber of the lowermost air tube. An air tube type liquid tank in which a liquid tank is formed by attaching a bottom cloth to a lower air tube, and a discharge pipe is connected to a discharge port of the liquid tank, and at least a part of the discharge pipe. Is made of a flexible material so that it can extend upward along the outer surface of the air tube, and at least the extension end portion has a length exceeding the highest position of the upper surface of the uppermost air tube. An air tube type liquid tank, wherein a locking means for removably fastening the discharge tube is provided on an uppermost air tube.