JP2548569Y2 - Water stoppage bag - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bag for a water stop device mainly used for a water stop device for temporarily blocking fluid in a water pipe.

[0002]

2. Description of the Related Art Conventionally, as a waterproofing device and a bag thereof, there is Japanese Patent Application No. 1-316776 previously proposed by the present inventors. However, such a bag has the following problems. That is, FIG. 3 shows a bag as described above, in which an inflow port 46 of a hose 45 is provided in an attachment port 44 of a waterproof bag 41 having a rubber bag 42 inside and a cloth bag 43 outside. The clamp 47 is disposed on the outer periphery of the mounting port 44, and the sleeve 48 is disposed in the hose 45. The clamp 47 is pressed against the sleeve 48 to connect the water stopping bag 41 to the hose 45. The water-stop bag 41 which is in a retracted state during use.
Is installed in the pipe through the bag insertion hole formed in the pipe from the water stop device attached to the pipe in the pipe, the pressure is considerably higher than the internal pressure of the water stop bag 41 at the same pressure as the atmospheric pressure. As shown in the drawing, the rubber bag 42 inside the water-stopping bag is pushed into the inflow port 46 of the hose 45 by the pipe pressure as shown in FIG. There was a problem that the film was locally stretched and damaged, and as a result, the waterproof bag 41 lost airtightness and could not be used.

[0003]

SUMMARY OF THE INVENTION Therefore, the present invention prevents the rubber bag from being pushed into the hose inlet due to the internal pressure when the rubber bag is disposed in the pipe at the time of use, thereby damaging the rubber bag. It is an object of the present invention to provide a water-stopping device bag for preventing the above problem, thereby solving the above-mentioned problems of the prior art.

[0004]

That is, the present invention relates to a rubber bag inserted into a conduit having an internal pressure or a water-stop bag having a rubber bag inside, wherein a hose connected to the mounting opening of the water-stop bag. Wherein the inflow port is covered with a net-like net having a thickness equal to or less than the thickness of the rubber bag.

[0005]

[Function] In such a bag for a water stopping device,
When the water stoppage is used, the rubber bag of the water stoppage bag is placed in the pipe of the pipe under the contracted condition by the pipe pressure which is considerably higher than the water stoppage pressure which is the same as the atmospheric pressure. Of the rubber bag provided at the hose inlet, or a net-like body having a thickness equal to or less than the thickness of the rubber bag or a sleeve having a hole equal to or less than the thickness of the rubber bag pushes the rubber bag into the inlet. To prevent that.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. The embodiment shown in FIGS. 1 and 2 has a rubber bag 2 on the inside and a cloth bag 3 on the outside. A clamp 7 is arranged on the outer periphery of the mouth 4 and a sleeve 8 is arranged in the hose 5. The clamp 7 is pressed against the sleeve 8 to connect the water-stopping bag 1 to the hose 5. The inlet 6 is covered with a net-like body 11 having a mesh 10 or less of a thickness 9 or less of the rubber bag 2, for example, a net-like body such as a net or cloth, and the water-stopping bag 1 is folded along the axis XX. It is in a contracted state.

In the water-stopping device bag of the present embodiment as described above, when the water-stopping is used, if the water-stopping device is disposed in the pipe of the pipe under the above-mentioned contracted state, at that time, as shown in FIG. The rubber bag 2 is about to be pushed into the hose inlet 6 by the pipe internal pressure considerably higher than the internal pressure of the water stopping bag 1 having the same pressure as that of the rubber bag provided at the hose inlet 6. The net-like body 11 having the meshes 10 to 10 having a thickness of 9 or less prevents the rubber bag 2 from being pushed into the inlet 6. After being placed in the pipe, air or fluid is fed into the rubber bag 2 from the hose 5 to inflate the water-stopping bag 1, and the expanded water-stopping bag 1 closes the pipe to stop water.

In the embodiment, the water-stopping bag 1 has the cloth bag 3 outside the rubber bag 2. However, the present invention does not necessarily require the cloth bag 3; The rubber bag 2 is used alone as a water bag.

[0009]

As described above, in the water-stopping device bag of the present invention, the rubber bag tends to be pushed into the inlet of the hose by the internal pressure when it is disposed in the pipe of the pipe during use. but it being possible thickness less net-like member of rubber bags provided to the inlet is prevented pushing the rubber bag to prevent damage to the rubber bag.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a part of one embodiment of the present invention.

FIG. 2 is a front view of the net-like body of the above example.

FIG. 3 is a longitudinal sectional view of a part of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Water stopping bag 2 Rubber bag 4 Mounting port 5 Hose 6 Inlet 9 Thickness 10 Mesh 11 Net-like body

Claims (1)

(57) [Scope of request for utility model registration] 1. A rubber bag to be inserted into a conduit having an internal pressure or a water-stop bag having a rubber bag inside, wherein an inflow port of a hose connected to a mounting opening of the water-stop bag is connected to the rubber bag. A water-stopping device bag, wherein the bag is covered with a net-like body having a thickness of not more than a thickness.