JP2001065003A - Water stop device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water stoop device capable of sealing the hole of a water pipe keeping water flowing. SOLUTION: This water stop device 10 is inserted to the water pipe 1 having a hole 2. The water stop device 10 comprises a screw bar body 11 extending into the hole 2 in the radial direction of the water pipe 11 and a sealing body 12 mounted on the screw bar body 11 from the outside of the water pipe 1. A hook 25 is rockably mounted on the inside end of the screw bar body 11 through a rocking pin 26, ad a pressing nut 22 is mounted on the screw bar body 11 from the outside of the water pipe 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water stopping device to be mounted on a pipe such as a water pipe having a hole serving as a water leakage point, and more particularly to a water sealing device capable of sealing a hole while water is flowing through the pipe. It relates to a water stop device.

[0002]

2. Description of the Related Art Conventionally, for example, the inner diameter is 1000 mm (1 mm).
m) A hole is formed in the front and rear water pipes, and when water leaks from this hole, the hole is sealed with a split band hardware, or the water flow in the water pipe is stopped and repaired directly by welding.

[0003]

When a hole is formed in a water pipe as described above, a split band metal is used or repaired by welding.

[0004] However, water pipes often have various curved pipes, and when using split band hardware, it is necessary to prepare split band hardware in accordance with the shape of the bent pipe. Is difficult.

[0005] In the case of direct welding, the flow of water through the water pipe must be stopped, and a certain period of water supply is required.

The present invention has been made in view of such a point, and when a hole is formed in a pipe such as a water pipe, the hole is easily and easily sealed while water is passed through the pipe. It is an object of the present invention to provide a water stop device which can perform the water stop.

[0007]

SUMMARY OF THE INVENTION The present invention relates to a water stopping device mounted on a tube having a hole, and a screw rod body extending in the hole in a radial direction of the tube and inserted into the hole. A sealing body that is attached to the threaded rod body that is positioned and seals the hole from the outside of the pipe, and a hook that is swingably attached to the threaded rod body that is located inside the pipe via a swing pin. It is a water stop device characterized by the above-mentioned.

According to the present invention, the hook and the threaded rod are aligned in a straight line, and then the hook and the threaded rod are inserted into the hole of the tube. The hook is swung with respect to the threaded rod main body and brought into contact with the inner surface of the tube. The seal is moved along the threaded rod body and pressed against the outer surface of the tube, and the hole is sealed by the seal.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 are views showing one embodiment of a water stopping device according to the present invention. As shown in FIGS. 1 to 3, a water pipe (pipe) 1 has a hole 2 due to corrosion or the like.
Are formed. As the water pipe 1, a steel pipe having an inner diameter of about 1 m can be considered.

As shown in FIGS. 1 (a) and 1 (b), a water stop device 10 includes a threaded rod body 11 which is inserted into a hole 2 in a radial direction of a water pipe 1 and is inserted outside the water pipe 1. A sealing body 12 that is located and attached to the screw rod body 11 and seals the hole 2 from the outside of the water pipe 1 and an inner end of the screw rod body 11 located inside the water pipe 1 through a swing pin 26. And a hook 25 movably attached.

[0011] Of these, the sealing body 12 is provided on the outer surface of the water pipe 1 with O.
The gasket includes a packing 14 that contacts through the ring 13, a holding metal 15 for holding the packing 14, and an O-ring case 16 for holding O-rings 17 and 20. The packing, the holding metal 15, and the O-ring case 16 are integrally formed. Assembled (FIG. 2).

The O-ring case 16 has an O-ring 1
An O-ring groove 18 for the O-ring 7 and an O-ring chamfer 19 for the O-ring 20 are provided.

Further, a holding nut 22 for holding the sealing body 12 against the outer surface of the water pipe 1 is provided outside the sealing body 12 of the screw rod body 11, and the holding nut 22 is attached to the screw rod body 1.
It is screwed to one outer screw 11a.

Further, at the outer end of the screw rod body 11, there is provided a spanner engaging step 11b for engaging a wrench to prevent the screw rod body 11 from rotating (FIG. 1 (b)).

Next, referring to FIG.
5 will be described in detail. As shown in FIG.
A hook storage groove 30 is formed at the inner end of the first hook 1, and the hook 25 is housed in the hook storage groove 30, and the swing pin 2
Swings through 6.

Further, one side edge of the hook storage groove 30 is slightly crushed, and the hook 25 is swung within a range of approximately 90 ° in the direction orthogonal to the screw rod body 11 from the same direction as the screw rod body 11. Means (not shown).

Further, at one end 25a of the hook 25,
A weight 27 is provided, and a string hole 28 for passing an operation string (not shown) is formed near the weight 27. The hook 25 is connected to the screw rod body 11 as described above.
90 in the direction perpendicular to the threaded rod body 11 from the same direction as
Although it is possible to swing within the range of °, if it faces in the same direction as the screw rod 11 of the hook 25, one end 25 of the hook 25
a faces the inside of the water pipe 1, and at this time, the other end 25 b of the hook 25 faces the outside of the water pipe 1.

By providing a weight 27 at one end 25a of the hook 25, the hook 25 is directed in the same direction as the screw rod body 11 when the water stop device 10 is mounted in the hole 2 from above the water pipe 1. And the hook 25
Can be easily inserted into the hole 2 and pulled out.

On the other hand, a weight 2 is attached to the other end 25b of the hook 25.
7 may be provided. In this case, when the water stop device 10 is mounted in the hole 2 from below the water pipe 1, the hook 25 can be directed in the same direction as the screw rod body 11 by the weight 27.

Next, the operation of the present embodiment having such a configuration will be described.

First, when the hole 2 is formed in the water pipe 1 by corrosion, the painted portion on the outer surface of the water pipe 1 is removed.
Finish the outer surface of the smooth. Next, the shape of the hole 2 is adjusted by using a taper reamer or the like so that the screw rod body 11 and the hook 25 can be inserted into a size.

During this time, since water continues to flow in the water pipe 1, water leaks from the hole 2.

Next, the screw rod main body 11 and the hook 25 of the water stopping device 10 are aligned in a straight line, and the hook 25 and the screw rod main body 11 are inserted into the hole 2 (two-dot chain line in FIG. 1).

Next, the operation string passed through the string hole 28 from the outside of the water pipe 1 is pulled through the hole 2, and the hook 25 is swung 90 degrees with respect to the screw rod body 11 (FIG. 1). solid line).

Next, the sealing body 12 is inserted into the outer periphery of the threaded rod body 11 from outside the water pipe 1. In this case, the sealing body 12 can slide freely along the outer periphery of the threaded rod body 11 and can be brought into contact with the outer surface of the water pipe 1.

The shape of the sealing body 12 is slightly curved corresponding to the outer shape of the water pipe 1.

Next, the holding nut 22 is attached from outside the threaded rod body 11, and the holding nut 22 is tightened. At this time, the hook 25 comes into contact with the inner surface of the water pipe 1 and the holding nut 2
2 can be securely tightened, whereby the sealing body 12 can be pressed against the outer surface of the water pipe 1. When the holding nut 22 is tightened, a wrench (not shown) may be engaged with the wrench engaging portion 11b so that the screw rod body 11 does not rotate.

In this way, water leakage from the hole 2 of the water pipe 1 can be stopped.

When removing the water stop device 10 from the water pipe 1, the water stop device 10 can be removed from the water pipe 1 by performing the reverse of the above operation. In this case, since the weight 25 is provided on the hook 25, the screw rod body 11 and the hook 25 can be easily linearly aligned, and the hook 25 can be easily pulled out from the hole 2.

When the water stop device 10 is not removed from the water pipe 1, the outer portion of the threaded rod body 11 is cut off as shown in FIG. The steel cover 31 can be attached. The assembly and attachment of the steel cover 31 is performed by a welded portion 33.

An opening 39 is formed in the steel cover 31.
The anticorrosion mortar 3 is inserted from the opening 39 into the steel cover 31.
2 is filled. The opening 39 is closed by a screw lid 38 having a nut 37, and the cover 31 is entirely covered by an outer peripheral cover 35. The outer peripheral cover 35 includes a plastic pasted body 35a, an anticorrosion sheet 35b, and a shrinkable sheet 3
5c, a putty 36 is filled between the cover 31 and the outer peripheral cover 35.

On the other hand, when the hole 2 is formed in the lower part of the water pipe 1, the water stop device 10 having the weight 27 provided at the other end 25b of the hook 25 as described above is used. Hook 2
5 is provided with a weight 27 at the other end 25b thereof,
When the screw rod body 11 is inserted into the hole 2 from below,
Since the screw rod body 11 and the hook 25 can be aligned on a straight line, the insertion and withdrawal work of the hook 25 and the screw rod body 11 can be easily performed.

As described above, according to the present embodiment, the hole 2 of the water pipe 1 can be easily sealed while the water is flowing through the water pipe 1.

[0034]

As described above, according to the present invention, the sealing body of the water stopping device is moved along the screw rod body while the water is passed through the pipe, and the sealing body is pressed against the outer surface of the pipe. Thereby, the hole of the tube can be sealed.

[Brief description of the drawings]

FIG. 1 is a diagram showing an embodiment of a water stop device according to the present invention.

FIG. 2 is an exploded perspective view showing a water stop device.

FIG. 3 is a diagram showing a state in which a steel cover is provided outside a water stop device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tube 2 hole 10 Water stop device 11 Screw rod main body 12 Sealing body 22 Presser nut 25 Hook 26 Swing pin 27 Weight

Claims (4)

[Claims] 1. A water stop device mounted on a tube having a hole, wherein the screw rod body is inserted into the hole so as to extend in the radial direction of the tube, and is attached to a screw rod body located outside the tube. A watertight body, comprising: a sealing body that seals a hole from the outside of the pipe; and a hook that is swingably attached via a swing pin to a threaded rod body located inside the pipe. apparatus. 2. The water stopping device according to claim 1, wherein a holding nut for holding the sealing body against the tube is attached to the outside of the sealing body of the screw rod body. 3. The screw rod main body is provided with a restricting means for restricting swing of the hook within a range of about 90 ° in a direction orthogonal to the screw rod main body from the same direction as the screw rod main body. Item 6. The water stop device according to Item 1. 4. The water stopping device according to claim 1, wherein a weight is provided at one end or the other end of the hook.