JP5042776B2 - Waterstop sealing device - Google Patents

Description

  The present invention seals the outer peripheral surface of an existing fluid pipe in a watertight manner with a casing, discharges chips generated when the existing fluid pipe in the casing is cut or perforated together with the fluid, and stops the discharge port. The present invention relates to a sealing device for a waterstop body that seals the waterstop body in a watertight manner to a discharge port by a waterstop body sealing means.

  A conventional waterstop sealing device seals a waterstop to a discharge port in a watertight manner by means of waterstop sealing means arranged to be movable in a water conduit connected to a discharge port provided in the casing. (For example, refer to Patent Document 1).

Japanese Utility Model Publication No. 1-1454 (2nd page, Fig. 2)

  However, in Patent Document 1, when sealing the waterstop by the waterstop sealing means, it is necessary to insert the waterstop sealing means while applying a force against the fluid flowing out from the discharge port. It was difficult to seal the waterstop to the outlet.

  The present invention has been made paying attention to such problems, and an object of the present invention is to provide a sealing device for a water stop body that can easily seal the water stop body to a discharge port.

In order to solve the above problems, a sealing device for a waterstop according to claim 1 of the present invention is provided.
A water guide channel connected to a discharge port provided in the housing, and the outer peripheral surface of the existing fluid tube is sealed in a watertight manner in the housing, and chips generated when the existing fluid tube in the housing is cut or drilled, and A water stopping body that discharges the outside of the casing together with a fluid through a discharge path connected to the water conduit through an on-off valve and stops the discharge port is provided to be movable at least part of the water conduit. A sealing device for a waterstop that is watertightly sealed to the outlet by a waterstop sealing means,
Both ends of the waterstop sealing means are open to communicate with each other, and an accommodating portion for watertightly storing the rear end side of the waterstop sealing means is provided, and the water conduit is formed of the waterstop sealing means. It is characterized by communicating with the accommodating part via
According to this feature, the water flowing out from the housing to the water conduit through the discharge port wraps around the rear end side accommodating portion via the water blocking body sealing means, and the water blocking body sealing means in which both ends communicate with each other inside is provided. Since at least a part of the water conduit can be moved under the same fluid pressure on the front end side and the rear end side of the water seal sealing means, the water seal can be sealed without requiring drag against the fluid flowing out from the discharge port. The waterstop can be easily sealed to the discharge port by inserting the attachment means with a small force.

The waterstop sealing device according to claim 2 of the present invention is the waterstop sealing device according to claim 1,
At least a part of the water conduit is formed substantially coaxially with the discharge port, and the water stop sealing means is a cylinder that is movable along the coaxial water conduit with the water stop attached to the front end. It has a feature of having a shape.
According to this feature, the waterstop sealing means having a cylindrical body approaches the discharge port only by moving in the axial direction at least a part of the water conduit formed substantially coaxially with the discharge port, It is easy to seal the water stop at the front end of the water stop sealing means to the discharge port.

The waterstop sealing device according to claim 3 of the present invention is the waterstop sealing device according to claim 2,
The waterstop is a screw body that is screwed into the discharge port by a rotational movement around the axis of the cylindrical body, and the waterstop sealing means can grip a peripheral surface of the cylindrical body. The cylindrical body is fed toward the discharge port, and has a feed turning means for turning the tubular body.
According to this feature, the outer surface of the cylindrical body is gripped by the sending and turning means and sent to the discharge port, and the cylindrical body is rotated and the water stop body, which is a screw body, is screwed into the discharge port. Thus, the approach operation and the sealing operation to the discharge port of the water stop body can be performed together by one delivery turning means.

The waterstop sealing device according to claim 4 of the present invention is the waterstop sealing device according to claim 3,
A screw insertion allowance gauge having substantially the same dimensions as a predetermined screw insertion allowance of the screw body is provided on the peripheral surface of the cylindrical body.
According to this feature, by rotating the cylindrical body by the dimension of the screwing allowance gauge, the screw body that cannot be visually confirmed from the outside in the water conduit can be screwed into the discharge port in a predetermined manner without excess or deficiency.

The waterstop sealing device according to claim 5 of the present invention is the waterstop sealing device according to any one of claims 1 to 4,
The storage portion is provided with a confirmation opening / closing valve for confirming a state in which the waterstop is sealed in the discharge port.
According to this feature, after sealing the water stop body to the discharge port by the water stop sealing means, by opening the confirmation on-off valve, and seeing the situation where the water is stopped without leaking from the discharge port, It can be confirmed that the waterstop is sealed in a watertight manner at the outlet.

  Examples of the present invention will be described below.

  Embodiment 1 of the present invention will be described with reference to the drawings. First, FIG. 1 is a cross-sectional view showing an entire image of a housing in Embodiment 1 of the present invention. FIG. 2 is a cross-sectional view showing a situation where chips are discharged. FIG. 3 is a partial cross-sectional view illustrating a state in which the insertion machine is connected to the discharge port of the housing. FIG. 4 is a partial cross-sectional view showing a state where the water stop piece is sealed to the discharge port. FIG. 5A is a partial cross-sectional view showing a situation in which a threading allowance gauge is attached, and FIG. 5B is a front view and a side view of the threading allowance gauge. FIG. 6 is a partial cross-sectional view showing a state where the water stop piece is sealed to the discharge port. FIG. 7A is a partial cross-sectional view showing a situation in which the accommodating portion and the like are removed, and FIG. 7B is a partial cross-sectional view showing a situation in which the cylindrical body and the like are removed. Fig.8 (a) is a perspective view of a water stop piece, (b) is a perspective view of the front-end | tip part of a cylindrical body. FIG. 9A is a cross-sectional view in which a water stop piece is attached to the discharge port, and FIG. 9B is a cross-sectional view in which a plug is attached to the discharge port. FIG. 10 is a cross-sectional view in which a plug is attached to the discharge port in a modification of the present invention.

  As shown in FIG. 1, a casing 2 in which an existing water pipe 1 as an existing fluid pipe is sealed, and a sluice valve 3 is installed after the existing water pipe 1 is drilled in the casing 2 to discharge chips. Has been. When the valve body 4 can be slid up and down at the perforated portion of the existing water pipe 1, the flow path of the existing water pipe 1 can be opened and closed.

  A discharge port 6 that communicates the inside and outside of the housing 2 is formed in the side surface of the housing 2 in the vicinity of the perforated portion of the existing water pipe 1, and a cut that occurs when the existing water pipe 1 in the housing 2 is perforated. The powder K can be discharged out of the housing 2 together with the fluid (clean water) in the existing water pipe 1.

  As shown in FIG. 2, the outer surface of the housing 2 is formed with a thick convex portion 6 a around the discharge port 6, and the inner peripheral surface of the convex portion 6 a is formed on the inner peripheral surface of the discharge port 6. A female screw portion 6b having a larger diameter than the female screw portion 6c is formed. A nipple 12 and a bushing 13 as a water conduit screwed into the female screw portion 6 b are connected coaxially with the discharge port 6 on the outside of the housing 2, and from the ball valve via the nipple 12 and the bushing 13. One end of the open / close valve 9 is screwed and connected, and similarly, a discharge pipe 15 as a discharge path is screwed and connected via a nipple 14 screwed to the other end of the open / close valve 9 to form a discharge path. . That is, the discharge path composed of the discharge pipe 15 can be opened and closed by opening and closing the on-off valve 9.

  When the existing water pipe 1 is drilled in the housing 2, the on-off valve 9 is opened, and the swarf K generated at the drilled portion of the existing water pipe 1 is discharged out of the housing 2 through the discharge port 6 together with the fluid. Discharged. After the drilling operation of the existing water pipe 1 is completed and the discharge of the chips K is confirmed, the on-off valve 9 is closed and the discharge of the fluid in the housing 2 is stopped.

  Since the discharge path is formed in one direction from the discharge port 6 and no branch path or the like is formed on the way, the chips K do not remain in the discharge path and can flow out of the discharge path.

  Then, the on-off valve 9 is closed, and the discharge pipe 15 and the nipple 14 are removed from the on-off valve 9. Next, as shown in FIG. 3, the insertion device 10 serving as a water-stopper sealing means is attached to the on-off valve 9, and the accommodating portion 27 is attached to the rear of the insertion device 10 in a watertight manner. The insertion machine 10 includes a bushing 16 screwed into the on-off valve 9 and a bushing 24 disposed coaxially with the bushing 16 via a bracket 25, and a bracket member fixedly attached to the on-off valve 9, and these bushings. 16 and 24, the cylindrical body 17 provided so as to be movable with respect to the on-off valve 9 and the bracket member, the cylindrical body 17 is sent out toward the discharge port 6, and the cylindrical body 17 is rotated. The feed rotation means 20 is mainly comprised.

  In addition, a hollow cylindrical accommodating portion 27 whose rear end is closed is screwed into the bushing 24 in a watertight manner. More specifically, an O-ring 28 is provided in a recess 24 b formed in an annular shape on the rear surface of the bushing 24, and the front surface of the storage portion 27 comes into watertight contact with the O-ring 28, thereby allowing the storage portion 27. Is connected to the bushing 24 in a watertight manner. And the rear-end side of the cylindrical body 17 is watertightly accommodated by the accommodating portion 27. Further, a confirmation opening / closing valve 44 is connected to a communication portion 27 a communicating with the inside of the housing portion 27.

  The water stop piece 7 will be described in detail. The water stop piece 7 is a screw body screwed into the discharge port 6, and the water stop piece 7 has a rear portion 31 as shown in FIGS. 8 (a) and 8 (b). The outer peripheral surface is formed in a hexagonal shape, while the inner peripheral surface is formed in a hexagonal box shape so that the distal end portion 18 of the insertion machine 10 can be fitted to the rear portion 31 of the water blocking piece 7. Further, an opening 17a communicating with the inside of the insertion machine 10 is formed on the circumferential surface of the cylindrical body 17 in the vicinity of the distal end portion 18 of the insertion machine 10, and an opening 17b is formed in the axial direction at the rear end of the cylindrical body 17. Has been. Through the openings 17a and 17b, both ends of the cylindrical body 17 communicate with each other even when the rear portion 31 of the water stop piece 7 is fitted to the distal end portion 18 of the insertion machine 10. The cylindrical body 17 of the insertion machine 10 is coaxially disposed with respect to the nipple 12 and the bushing 13 that are coaxially connected to the discharge port 6.

  Further, a female thread portion 35 is formed at the center of the rear end surface of the water stop piece 7, and the water stop piece 7 is screw-engaged with the tip end portion 11 a of the rod-like support 11 inserted into the insertion machine 10. Has been.

  On the other hand, as shown in FIG. 3, a plate piece 22 having an insertion hole formed in the center is fixed to the inner surface of the cylindrical body 17 on the rear end side, and the rear end portion of the rod-shaped support 11 is The bushing 23 is screwed to the rear end portion while being inserted into the insertion hole.

  Therefore, since the water stop piece 7 is hooked to the insertion machine 10 via the rod-like support body 11 engaged with the screw, the water stop piece 7 can be supported without dropping from the position of the distal end portion 18 of the insertion machine 10. .

  Further, a U-shaped recess 16a is formed in advance in the circumferential direction on the inner peripheral surface of the bushing 16 into which the cylindrical body 17 is inserted, and an O-ring 19 is provided in the recess 16a. It has been. Similarly, two U-shaped concave portions 24a are formed in advance in the circumferential direction on the inner peripheral surface of the bushing 24 into which the cylindrical body 17 is inserted, and each concave portion 24a has an endless shape. An O-ring 29 is provided. The outer peripheral surface of the cylindrical body 17 fitted and inserted into the bushing 16 and the bushing 24 is formed so as to be in watertight contact with the O-ring 19 and the O-ring 29 and to be able to be inserted through the water conduit.

  Therefore, when the insertion machine 10 is inserted through the water conduit, the space between the inner peripheral surface of the bushing 16 and the bushing 24 and the outer peripheral surface of the cylindrical body 17 is sealed regardless of the position of the insertion machine 10. .

  By connecting and configuring the respective members as described above, the nipple 12 and the bushing 13 as the water conduit are passed through the opening 17a formed on the front end side of the insertion machine 10 and the opening 17b formed on the rear end side. In this manner, the rear end side of the insertion machine 10 communicates with the housing portion 27 that houses the rear end side.

  Next, as shown in FIG. 3, in the state where the insertion machine 10 that hooks the water stop piece 7 at the tip is connected to the on-off valve 9, the on-off valve 9 and the on-off valve 44 for confirmation are opened. The fluid is caused to flow out from the hose 45, the air in the flow path is discharged to the outside, and the chips remaining in the housing 2 are discharged together with the fluid.

  Subsequently, as shown in FIG. 4, the confirmation opening / closing valve 44 is closed, and the insertion machine 10 is inserted toward the discharge port 6. More specifically, the delivery turning means 20 includes a fixed handle 20a for fixing the inner peripheral surface thereof to the outer peripheral surface of the cylindrical body 17, and a delivery turning handle 20b extending in the radial direction. Have. Then, as shown by a solid line in FIG. 4, the sending and turning means 20 is formed into a cylindrical shape by pressing the fixed handle 20 a toward the outer peripheral surface of the cylindrical body 17 at an appropriate position near the bushing 24. The cylindrical body 17 can be moved toward the discharge port 6 by holding it fixed to the body 17 and pressing the delivery handle 20b toward the discharge port 6 in this state. Further, as will be described later, when the delivery turning handle 20b is rotated around the axis of the cylindrical body 17 in this state, the tip 18 having a hexagonal box-like inner surface is provided via the cylindrical body 17. Rotational force is transmitted to the water stop piece 7 fitted to the.

  Next, as shown by the one-dot chain line in FIG. 4, the holding handle 20 a of the delivery turning means 20 that has moved closer to the bushing 16 is once released from gripping, and again as shown by the solid line in FIG. 4. At a position close to 24, the cylindrical body 17 is gripped by the fixed handle 20a, and the cylindrical body 17 is moved toward the discharge port 6. Thereafter, by repeating this operation, the tip of the water stop piece 7 is brought into contact with the discharge port 6.

  At this time, the fluid that has flowed out of the housing 2 through the discharge port 6 into the nipple 12 wraps around the receiving portion 27 on the rear end side through the cylindrical body 17 of the insertion device 10, and the insertion device 10 in which both ends communicate with each other internally. Since the front end side and the rear end side of the insertion machine 10 can move inside the T-shaped tube 40, the on-off valve 9, and the nipple 12 and the bushing 13 as the water conduit, the outlet 6 Therefore, the water stop piece 7 can be easily sealed to the discharge port 6 by inserting the insertion machine 10 with a small force without requiring a drag force against the spilled fluid.

  Further, the insertion machine 10 having the cylindrical body 17 approaches the discharge port 6 only by moving in the axial direction in the nipple 12 and the bushing 13 and the on-off valve 9 formed substantially coaxially with the discharge port 6. It is easy to seal the water stop piece 7 at the front end of the insertion machine 10 to the discharge port 6.

  Next, as shown in FIGS. 6 and 8A, the sealing of the water stop piece 7 to the discharge port 6 will be described in detail. The discharge port 6 provided in the housing 2 has an inner peripheral surface. A female screw portion 6c is formed, and a male screw portion 32 that can be screwed into the female screw portion 6c is provided on the side peripheral surface of the front portion of the water blocking piece 7.

  Therefore, as shown in FIG. 6, after the front end surface of the water stop piece 7 comes into contact with the discharge port 6, the inserter 10 is rotated around the center of the shaft by the feed rotation handle 20b. The top 7 is screwed into the discharge port 6.

  In addition, a communication hole 34 that communicates with a distal end port 33 formed in the distal end surface of the water blocking piece 7 is formed in an intermediate portion of the male screw portion 32.

  Accordingly, when the water stop piece 7 is screwed by the insertion machine 10, the front end surface of the water stop piece 7 closes the discharge port 6, and the male screw portion 32 is turned into the female screw portion 6 c by the rotation of the water stop piece 7. When screwed, the fluid flowing out from the discharge port 6 flows out of the water stop piece 7 from the front end port 33 through the communication hole 34, and therefore, in the water conduit generated by screwing of the water stop piece 7. The fluid corresponding to the volume change can be circulated, the pressure received by the water stop piece 7 by the fluid flowing out from the discharge port 6 is reduced, and the fluid can be smoothly screwed into the discharge port 6.

  After the water stop piece 7 is screwed into the discharge port 6 to the middle portion of the male screw portion 32 and the communication hole 34 is closed by the female screw portion 6c, the screwed male screw portion 32 and the female of the discharge port 6 are inserted. Since the screw portion 6c is screwed, the water stop piece 7 is further screwed into the discharge port 6 by the rotation operation of the insertion machine 10 without the water stop piece 7 dropping off from the discharge port 6 due to water pressure.

  Further, as shown in FIGS. 6 and 8A, when the water stop piece 7 is completely screwed into the discharge port 6, an O-ring 37 inserted into the end side of the male screw portion 32 is inserted. Since the seal is tightly sealed between the peripheral edge of the discharge port 6 and the flange portion 36, the fluid flowing out from the discharge port 6 is stopped.

  Next, as shown in FIGS. 5A and 5B, the screwing operation of the water stop piece 7 will be described. The distal end portion 42 has a substantially C shape along the outer peripheral surface of the cylindrical body 17. Thus, the screw insertion allowance gauge 41 whose width L of the front end portion 42 is substantially the same as the screw insertion allowance size of the male screw portion 32 of the water stop piece 7, the front end portion 42 abuts against the rear end surface of the bushing 16. The feed turning means 20 is disposed at a predetermined position where the tip 42 is sandwiched between the bushing 16 and the fixed handle 20a is fixed to the outer peripheral surface of the cylindrical body 17 at the predetermined position. .

  After fixing, the screw insertion allowance gauge 41 is removed to remove the screw insertion allowance dimension of the water stop piece 7 between the front end face of the feed turning means 20 fixed at the predetermined position and the rear end face of the bushing 16. And a gap (dimension L) of approximately the same size appears.

  Next, a screw that cannot be visually confirmed from the outside in the water conduit by rotating the delivery turning handle 20b to the size of the gap, that is, the position where the delivery turning means 20 contacts the bushing 16. The water stop piece 7 that is a body can be screwed into the discharge port 6 in a predetermined amount without excess or deficiency, and the O-ring 37 is pressed in a predetermined manner to seal the discharge port 6. By doing so, for example, the O-ring 37 is not pinched in a predetermined watertight state due to insufficient screwing of the water stop piece 7 or the O-ring 37 is pinched by excessive screwing of the water stop piece 7. It is possible to avoid problems such as excessive damage.

  Further, as described above, the feed turning means 20 grips the outer surface of the tubular body 17 and feeds it toward the discharge port 6, and the tubular body 17 is turned to turn the water stop piece 7 as a screw body. By screwing into the discharge port 6, the approach operation and the sealing operation of the water stop piece 7 to the discharge port 6 can be performed together by a single feed rotation means 20.

  Next, after the water stop piece 7 is fully screwed in and the discharge port 6 is sealed, the confirmation opening / closing valve 44 is opened. And it can confirm that the water stop piece 7 was sealed to the discharge port 6 in a watertight manner by observing the situation where the water was stopped without leaking from the discharge port 6.

  Next, as shown in FIG. 7A, the operation after sealing the water stop piece 7 will be described. First, the housing portion 27 screwed into the bushing 24, the confirmation opening / closing valve 44, and the like. Remove from the bushing 24.

  Next, by rotating the bushing 23 that is screwed to the rod-shaped support 11 on the rear end side of the cylindrical body 17, the water stop piece 7 and the rod-shaped support 11 are separated. Further, as shown in FIG. 7B, after removing the bushing 16 engaged with the on-off valve 9, the insertion machine 10 inserted into the water conduit is pulled out rearward.

  Also, as shown in FIGS. 9A and 9B, after removing the piping material forming the water conduit, a seal tape is wound around the male threaded portion of the plug 8 having the recess 8a, so that the nipple 12 By screwing into the female screw portion 6 b that has been screwed, the water discharge piece 6 can be double-stopped by the water stop piece 7 and the plug 8.

  The plug is not necessarily limited to the plug 8 having the above-described recess 8a. For example, as a modification of the plug, as shown in FIG. 10, a front end surface 81a disposed near the rear end surface of the water stop piece 7 is provided. A seal tape may be wound around the male screw portion of the plug 81 having the screw 81 and screwed into the female screw portion 6b. By doing in this way, it becomes possible to double stop the discharge port 6 with the water stop piece 7 and the plug 81.

  Next, Embodiment 2 of the present invention will be described with reference to the drawings. FIG. 11 is a partial cross-sectional view showing a state in which an insertion machine is connected to the discharge port of the housing in Embodiment 2 of the present invention. In addition, the same structure as the said Example is abbreviate | omitted.

  As shown in FIG. 11, the nipple 12, the bushing 13, and the T-tube 63 are sequentially connected coaxially to the discharge port 6 as the water conduit in the second embodiment. An open / close valve 66 is connected to the T-shaped pipe 63 through a nipple 65 substantially orthogonally upward, and a discharge hose 67 as a discharge path is connected to the open / close valve 66. That is, an on-off valve 66 and a discharge hose 67 are provided on a shaft different from the discharge port 6.

  After opening the on-off valve 66 and discharging the chips through the discharge hose 67, the open / close valve 66 is closed with the discharge hose 67 left without being removed, and the water stop piece 7 is attached to the tip. The machine 10 is inserted toward the discharge port 6, and the T-tube 63, the bushing 13 and the nipple 12 are passed through. By doing in this way, since the insertion machine 10 which has the cylindrical body 17 does not move through the on-off valve 66, the insertion machine 10 can be moved regardless of whether the on-off valve 66 is open or closed. Can do.

  Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments, and modifications and additions within the scope of the present invention are included in the present invention. It is.

  For example, the cutting or drilling of the existing fluid pipe may be a method of drilling a part of the existing fluid pipe as in the above embodiment as long as it involves generation of chips, or cuts the entire cross section of the existing fluid pipe. It may be a thing.

  In the above embodiment, the sluice valve 3 is provided after the existing water pipe 1 is sealed with the casing 2 and the existing water pipe 1 in the casing 2 is perforated. As long as the water pipe 1 is cut or perforated, a valve body such as the sluice valve 3 may not be installed in the housing 2.

  Furthermore, when a valve body is installed in the housing 2, it is not necessarily limited to the sluice valve 3, and for example, a butterfly valve or a partition body may be used.

  In the above embodiment, the pipe fluid of the existing water pipe 1 is clean water, but the pipe fluid may be sewage or gas.

  Moreover, in the said Example, although the discharge port 6 or the water conduit was formed in the substantially horizontal direction, and the water stop piece 7 was inserted in the substantially horizontal direction with the insertion machine 10, the formation position of the discharge port 6 or the water conduit is formed. Is not necessarily limited to the horizontal direction, and may be formed, for example, in the vertical direction or the oblique direction. Since the water-stopping piece 7 is engaged with the insertion machine 10 via the rod-like support 11 that is screw-engaged with the female screw part 35, the water-stopping piece 7 is dropped from the distal end portion 18 of the insertion machine 10. Without making it, it becomes possible to insert the inside of the water conduit toward the outlet 6.

It is sectional drawing which shows the whole image of the housing | casing in Example 1 of this invention. It is sectional drawing which showed the condition where cutting powder is discharged | emitted. It is the partial cross section figure which showed the condition where the insertion machine was connected to the discharge port of a housing | casing. It is a partial cross section figure which showed the condition which seals a still water top to a discharge port. (A) is the partial cross section figure which showed the condition where the screwing allowance gauge was attached, (b) is the front view and side view of a screwing allowance gauge. It is the partial cross section figure which showed the condition where the water stop top was sealed to the discharge port. (A) is the partial cross section figure which showed the condition where the accommodation section etc. is removed, (b) is the partial cross section figure which shows the situation where the cylindrical body etc. is removed. (A) is a perspective view of a water stop piece, (b) is a perspective view of the front-end | tip part of a cylindrical body. (A) is sectional drawing which attached the water stop top to the discharge port, (b) is sectional drawing which attached the plug to the discharge port. It is sectional drawing which attached the plug to the discharge port in the modification of this invention. It is the partial cross section figure which showed the condition where the insertion machine was connected to the discharge port of the housing | casing in Example 2 of this invention.

Explanation of symbols

1 Existing water pipe (existing fluid pipe)
2 Housing 6 Discharge port 7 Water stop frame (water stop body, screw body)
8 Plug 9 Open / close valve 10 Inserting machine (water-stopper sealing means)
12 Nipple (water channel)
13 Bushing
15 Discharge pipe (discharge path)
17 Cylindrical body 20 Delivery rotation means 27 Housing part 41 Screw insertion allowance gauge 44 On-off valve for confirmation 66 On-off valve 67 Discharge hose (discharge path)
81 plug

Claims (5)

A water guide channel connected to a discharge port provided in the housing, and the outer peripheral surface of the existing fluid tube is sealed in a watertight manner in the housing, and chips generated when the existing fluid tube in the housing is cut or drilled, and A water stopping body that discharges the outside of the casing together with a fluid through a discharge path connected to the water conduit through an on-off valve and stops the discharge port is provided to be movable at least part of the water conduit. A sealing device for a waterstop that is watertightly sealed to the outlet by a waterstop sealing means,
Both ends of the waterstop sealing means are open to communicate with each other, and an accommodating portion for watertightly storing the rear end side of the waterstop sealing means is provided, and the water conduit is formed of the waterstop sealing means. The waterstop sealing device, wherein the waterstop is communicated with the accommodating portion via a gap.   At least a part of the water conduit is formed substantially coaxially with the discharge port, and the water stop sealing means is a cylinder that is movable along the coaxial water conduit with the water stop attached to the front end. The sealing device for a still water body according to claim 1, further comprising a rod-like body.   The waterstop is a screw body that is screwed into the discharge port by a rotational movement around the axis of the cylindrical body, and the waterstop sealing means can grip a peripheral surface of the cylindrical body. The waterstop sealing device according to claim 2, further comprising a feed turning means for feeding the tubular body toward the discharge port and turning the tubular body.   The water sealing body sealing device according to claim 3, wherein a screw insertion allowance gauge having substantially the same dimensions as a predetermined screw insertion allowance of the screw body is provided on a peripheral surface of the cylindrical body. .   5. The water stop body according to claim 1, wherein a confirmation opening / closing valve for confirming a state in which the water stop body is sealed at the discharge port is provided in the housing portion. Sealing device.

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