JP3376304B2 - Civil engineering bag with leakage prevention function - Google Patents

Description

BACKGROUND OF THE INVENTION [0001] [Technical Field of the Invention The present invention is, for civil engineering bag for injecting and receiving the fluid, such as viscous fluids or water, such as fresh concrete or mud, the further as far detail, after the injection of the fluid it is related to civil engineering bag provided with the leak prevention function that can reliably prevent leakage from the injection port of the fluid. 2. Description of the Related Art As is well known, a bag contains a viscous fluid such as ready-mixed concrete or mud as a material for civil engineering such as a slope protection material or an embankment material, and the slope to be protected or raised. It is installed and used in places. However, when the injection of the viscous fluid has been completed, the inside of the bag is pressurized by the viscous fluid, and the viscous fluid leaks from the injection port due to the pressure difference between the inside and the outside of the bag. And the bulk does not become uniform,
There was a problem that a required weight could not be obtained. However, a bag described in Japanese Patent Application Laid-Open No. Hei 10-37151 has been proposed to solve this problem. In the bag A, as shown in FIG. 7 , an introduction passage b communicating with an injection port a for injecting mud is formed by an outer cylinder B protruding outside the bag A. the inlet a and the introduction path b and passage c communicating is configured to be formed by the cylinder C inner projecting from the inside of the bag a, as shown in FIG. 8, the inner bag by mud injection The inner cylinder C is crushed by the action of the pressure p, and the injection port a is closed at the crushed portion d of the inner cylinder C, thereby preventing the mud from leaking. However, such a bag (Japanese Patent Laid-Open No. 10-3)
No. 7151), the crushed portion d of the inner cylinder C in which the closing of the inlet a is inserted into the bag A near the inlet.
For example, when some external force is applied to the bag A to increase the pressure p inside the bag,
As shown in FIG. 9 , the crushed portion was pushed out toward the injection port side by pressure and turned up, whereby the injection port a was opened, and there was a fear that mud and the like inside leaked. SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned drawbacks of the conventional civil engineering bag, and the pressure of the fluid inside the bag has been reduced. be increased, the injection port is reliably closed, and the technical object to provide a Rukoto no practical engineering bag body is leakage <br/> exiting the fluid, such as the inside of the accommodation mud Things. Means adopted by the present inventor to solve the above-mentioned technical problem will be described below with reference to the accompanying drawings. That is, the present invention has a flow
A bag 1 having an inlet 10 for injecting the body; communicated with the inlet 10 in the bag 1, the inlet
At a position opposed to the 10 it has a closed surface portion 31, and the inlet
At least two sides with respect to the direction of fluid injection from 10
To thereby flow the flow path 30 to be accommodated in the bag; or
Are al construction, closes the closing <br/>塞面portion 31 inlet 10 by passage 30 by the action of the pressure P of the contained fluid into the bag body 1 is squashed pressure, the bag Flow contained in the body
The feature is that leakage of moving objects is prevented. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below based on embodiments shown in the accompanying drawings. FIG. 1 is an overall perspective view of the civil engineering bag according to the first embodiment of the present invention in an injection port open state, and FIG. 2 is an XX cross section of the civil engineering bag of the first embodiment in an injection port open state. Drawing 3 and Drawing 3 are XX sectional views of an injection port closure state of a civil engineering bag of a first embodiment, and Drawing 4 is a whole perspective view of an injection port opening state of a civil engineering bag of a second embodiment concerning the present invention. 5 and FIG. 5 are Y-Y cross-sectional views of the civil engineering bag according to the second embodiment, in which the injection port is open, and FIG. 6 are Y-Y cross-sectional views of the civil engineering bag according to the second embodiment, in which the injection port is closed. is there. [First Embodiment] In FIGS. 1 to 3, what is indicated by reference numeral 1 is a bag body capable of storing ready-mixed concrete. The bag body 1 of the present embodiment is formed by sewing a polyester woven fabric into a bag shape, and has an opening 10 for injecting ready-mixed concrete on a side. In FIG. 1 to FIG. 3, what is indicated by reference numeral 2 is
An outer cylinder made of a polyester woven fabric sewn to the inlet 10, and the inner space of the outer cylinder 2 constitutes an introduction path 20. In FIG. 1 to FIG. 3, what is indicated by reference numeral 3 is:
An inner cylinder made of a polyester woven fabric, which communicates with the inlet 10 inside the bag and is sewn along the inner side of the bag 1 so as to form a T-shape with the outer cylinder 2. The inner cylinder 3 has a closing surface portion 31 that can directly close the injection port 10 in opposition to the injection port 10, and the inner space of the inner cylinder 3 is used for bagging the ready-mixed concrete injected from the injection port 10. A flow passage 30 that allows the fluid to flow into the body in two directions is configured. [0013] In the case of the civil engineering bag of this embodiment, since the bag 1 has the closed surface 31 facing the injection port 10, as shown in FIG. the inner cylinder 3 by the action of the pressure P of the bag body portion by injection crush and pressure, it becomes possible to block the direct injection port 10 at the closing surface portion 31 of the inner cylinder 3, to prevent leakage of the fresh concrete that You can do it. As described above, in the civil engineering bag according to the present embodiment, the injection port 10 can be directly closed by the closing surface 31 facing the injection port 10, so that the pressure P of the ready-mixed concrete inside the bag body can be reduced. The conventional product (Japanese Unexamined Patent Publication No. 10-3715)
Without even result in open like a crushed portion of the inner tube in 1 JP), the inlet 10 is not even a danger of leakage reliably occluded by fresh concrete. Further, in the civil engineering bag of the present embodiment, since the flow passage 30 is formed in a cylindrical shape, even if it is a viscous fluid having high viscosity such as ready-mixed concrete, the inside of the bag is not required. Can flow smoothly into the [Second Embodiment] In FIGS. 4 to 6, what is indicated by reference numeral 1 is a bag body capable of storing water. The bag 1 of the present embodiment is formed by bonding an EVA rubber sheet in a bag shape, and has an inlet 10 for injecting water on a side. In FIGS. 4 to 6, what is designated by reference numeral 2 is:
An outer cylinder made of an EVA rubber sheet adhered to the inlet 10, and the inner space of the outer cylinder 2 forms an introduction path 20. In FIGS. 4 to 6, what is designated by reference numeral 4 is:
The inner membrane is made of an EVA rubber sheet, and the inner membrane is bent in a “<” shape so that one long side extends along the inner side of the bag 1 so as to form a T-shape with the outer cylinder 2. Along with being glued,
The other long side is adhered to the inner upper surface of the bag 1. The inner membrane 4, an inlet 10 facing directly the inlet 10 with has a closing surface portion 31 can be closed, communicates with the inlet 10 between the inside upper surface of the bag body 1, the A flow passage 30 for flowing water injected from the inlet 10 into the bag body in two directions is formed. [0017] Thus, in the civil engineering bag of the present embodiment has the closing surface portion 31 facing the inlet 10 into the pouch 1, as shown in FIG. 6, water It becomes possible to crush the “に よ る” -shaped intima 4 by the pressure P inside the bag body by the injection, and to directly close the injection port 10 with the closing surface portion 31,
Water leakage can be prevented. As described above, in the civil engineering bag according to the present embodiment, as in the first embodiment, the injection port 10 can be directly closed by the closing surface 31 facing the injection port 10, so that
Even increasing the pressure P of the water in the bag body portion, said injection port 10 is reliably closed without even become open, it is have no a fear that leakage of water. Further, in the civil engineering bag of the present embodiment, the inner membrane 4 is bent in the shape of a square, so that the inner membrane 4 can be easily formed by the pressure P inside the bag. pressure was crushed,
In closing surface portion 31 of the inner membrane 4, it is possible to close the quick inlet 10. Although the embodiments of the present invention are generally as described above, the present invention is not limited to the above-described first and second embodiments, and various modifications are made within the scope of the claims. Can be changed, and any of the modifications described below belong to the technical scope of the present invention. For example, in the above embodiment, the introduction path 20 is formed outside the bag 1, but the introduction path 20 may not be formed. In the above embodiment, the bag 1, the inner cylinder 3
Alternatively, as the material of the inner membrane 4, a polyester woven fabric or EVA
While using the rubber sheet, not shall be limited to this, considering the application of the fluid type and the bag body may be used, for example nonwoven fabric or knitted fabric. [0023] Furthermore, in the above embodiment, the flow path 30 having two openings, the <br/> liquidity body injected from the injection port 10 to the inside bag is made to flow in two directions, but if this passage 30 has a closing surface portion 31 facing the inlet 10, it is not limited to the first and second embodiment products described above. As described above with reference to the embodiment, the civil engineering bag having the leakage preventing function according to the present invention has a closed surface facing the injection port inside the bag. the inside housing pressure of the bag using skillfully, since occlude the inlet at the closing surface portion, even if the pressure of liquidity <br/> of the bag body portion becomes high, certainly flow It can prevent body leakage. [0025] Thus, for civil engineering bag of the present invention utilizes the growing pressure of the liquidity body occurring inside the bag body by the injection of liquidity <br/> body, precisely the leakage of contained object Since it is possible to prevent it and its structure is extremely simple and can be provided at low cost, its industrial use value is extremely high.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall perspective view of a civil engineering bag according to a first embodiment in an injection port open state. FIG. 2 is an XX cross-sectional view of the civil engineering bag according to the first embodiment in an injection port open state. FIG. 3 is a sectional view taken along line XX of the civil engineering bag according to the first embodiment in a state where an injection port is closed. FIG. 4 is an overall perspective view of the civil engineering bag of the second embodiment in an injection port open state. FIG. 5 is a sectional view taken along the line YY of the civil engineering bag according to the second embodiment with the injection port opened. FIG. 6 is a cross-sectional view of the civil engineering bag according to the second embodiment taken along line YY in a state where an injection port is closed. FIG. 7 is a schematic cross-sectional view of a conventional civil engineering bag with an injection port opened. FIG. 8 is a schematic cross-sectional view of a conventional civil engineering bag with an injection port closed. FIG. 9 is a schematic cross-sectional view of a conventional civil engineering bag with an injection port opened. [Description of Signs ] One bag 10 Injection port 30 Flow passage 31 Closed surface P Pressure of fluid

Claims (1)

(57) [Claims 1] and bag having an injection port for injecting a fluid (10) (1); the inlet in the bag (1) (10) And a closing surface (31) at a position facing the injection port (10) , and allows the fluid to flow in at least two directions with respect to the injection direction of the fluid from the injection port (10). And a flow path (30) that can be stored in the bag body. The flow path (30) is compressed by the action of the pressure (P) of the fluid stored in the bag body (1) . Closed surface part (31) by being crushed
A civil engineering bag having a leakage preventing function, wherein the bag closes the inlet (10) to prevent leakage of the fluid contained in the bag.