JP2003329189A - Chip recovering device in continuously-supplied water cutting off device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a chip recovering device in a continuously-supplied water cutting off device which surely and easily takes out the chips without mixing the chip in a fluid conduit even when the direction of the water flow is changed by the change of a part of demand. <P>SOLUTION: In the chip recovering devices 10a, 10b in the continuously- supplied water cutting off device for cutting off the water in a state of continuous water supply state by covering a fluid conduit 1 by a sealing housing 4, the chip recovering devices 10a, 10b are respectively composed of mesh parts 26a, 26b having softness, and operating parts for moving the mesh parts 26a, 26b between a sealing chamber outside of an opening and the inside of the fluid conduit in the opening through the opening formed on a peripheral wall of the fluid conduit 1, and are mounted at two parts, that is, the upstream and downstream parts of a cutting off part of the fluid conduit 1. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chip recovery device in an uninterrupted water cutting device that covers a fluid pipe with a hermetically sealed housing and cuts in an uninterrupted water state.

[0002]

2. Description of the Related Art A chip collecting method in a conventional water cutting device for cutting a fluid pipe in a sealed state is, as shown in FIG. 8, a sealed casing capable of cutting the fluid pipe in a sealed state at the center of a fluid pipe 01. A cutting machine 03 covered with 02 is provided, and chips generated at the time of cutting that have fallen to the bottom surface of the sealed casing 02 are discharged from a drain valve 04 provided at the bottom portion through a drain pipe 05 using water pressure in the pipe. You can do it. Moreover, the chips left in the casing 02 after the completion of the perforation cutting were discharged to the outside by the sweeper method.

[0003]

However, although such a conventional chip collecting method can discharge a certain amount of chips, the chips that cannot be dropped may flow into the main pipe along the main stream. In addition, even in the sweeper method after completion of cutting, chips may flow to the downstream side depending on the flow velocity in the pipe.

Therefore, it is conceivable to insert the filter member in a hermetically sealed state in the vicinity of the cut portion of the fluid pipe, but it is difficult to collect and collect all the chips in the filter member, so that If the direction of the water flow changed due to fluctuations, the chips that had been captured up to now would instantly disperse, which was a practical problem.

The present invention has been made in view of the above-mentioned problems, and even if the direction of the water flow changes due to a change in the demand location, the chips do not mix in the fluid pipe and can be taken out reliably and easily. It is an object of the present invention to provide a chip collecting device in an uninterrupted water cutting device capable of performing the above.

[0006]

In order to achieve the above object, a chip recovery device in an uninterruptible water cutting device of the present invention is a continuous water cutting device for covering a fluid pipe with a hermetically sealed housing and cutting in an uninterrupted water state. A chip collecting device,
The chip collecting device includes a flexible mesh portion, and an operating portion that moves the mesh portion between a sealed chamber outside the opening and the inside of the fluid pipe through the opening formed in the peripheral wall of the fluid pipe. It is characterized in that it is arranged at two locations upstream and downstream of the cut portion of the fluid pipe. According to this feature, since the chip collecting device is arranged at two locations, upstream and downstream, of the cutting portion of the fluid pipe, even if the direction of the water flow is changed due to the change of the demand point, the chip either upstream or downstream. Chips can be captured by the recovery device, and the capture and recovery of chips can be easily switched by simply moving the net through the opening.

In the chip recovery device of the non-interruptible water cutting device of the present invention, it is preferable that the mesh portion is in a folded state in the sealed chamber and is expandable to the inner diameter of the fluid pipe. In this way, the net can be expanded to the inner diameter of the pipe to reliably take in the chips, and the chips that have been caught by being folded can be prevented from scattering, and a small sealed chamber is required.

In the chip recovery device in the water cutting device of the present invention, it is preferable that, in addition to the chip recovery device, a sweeper tool can be introduced into the fluid pipe. By doing so, it is possible to reliably collect the chips that have been caught by the net portion and to collect chips that have fallen away from the net portion with the sweeper tool.

In the chip recovery device in the uninterrupted water cutting device of the present invention, it is preferable that the sweeper tool can insert a sweeper pipe from the hermetic housing into the fluid pipe. In this way, if you insert the sweeper tube from the sealed housing used for cutting,
Chips can be collected efficiently.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a side view showing a state in which a chip collecting device is provided at two locations upstream and downstream of a perforating device which is attached to an existing fluid pipe in a watertight state, according to one embodiment of the present invention. Is an explanatory view showing a state in which chips are collected after being drilled by a chip collecting device and a sweeper tool arranged at two locations upstream and downstream of the punching portion, FIG. 3 is a perspective view of the chip collecting device, and FIG. FIG. 5 is a cross-sectional view showing a state in which the net body is housed in the guide cylinder of the chip collecting device attached to the flange of the seal tube.
FIG. 6 is a cross-sectional view showing a state in which the net body is fed into the water pipe by the operation of the operation unit, and FIG. 6 is a cross-sectional view showing a state in which the net body fed into the water pipe expands and comes into contact with the inner wall of the water pipe. is there.

Reference numeral 1 shown in FIG. 1 indicates a water pipe as an existing pipe, and a part of the water pipe 1 is provided with a piercing device 2 for piercing to connect a branch pipe. In order to attach a drilling device to this water pipe 1, the ground 3 is excavated and the water pipe 1
To form a pit 3a having a predetermined size, and concrete is horizontally placed on the bottom surface of the pit 3a to form a foundation 5, and foundations 6a and 6b for supporting the bottoms of both sides of the water pipe 1 at the perforation site. To form.

Therefore, the exposed water pipe 1 is fitted with a sealed housing 4 which is vertically divided into two parts around the pipe axis of the water pipe 1 so as to cover the perforated portion via a bolt (not shown), The sluice valve 14 is attached to the central upper portion of the hermetic housing 4, and the punching device 2 is attached to the upper portion thereof via the flange F.

On the sealed housing 4 which covers the water pipe 1, the chip collecting devices 10a and 10b having the same structure are detachably attached at two positions on the upstream and downstream sides of the punching device 2, respectively.
Therefore, one chip collecting device 10a (the device on the left side in FIG. 1) will be described.

As shown in FIG. 4, the left chip collecting apparatus 10a includes a sluice valve 15a attached to the flange 22a of the connecting short pipe 22 in the upper part of the sealed housing 4, and a flange 25a above the sluice valve 15a. A guide cylinder 25 configured as a sealed chamber that is watertightly attached via a partition, and a partition net that is a mesh part having a flexible mesh housed in the guide cylinder 25 that is a relatively fine wire mesh or the like. Two
6 and an operating section 28 for operating the partition net 26 in and out of the water pipe 1.

The partition net 26 has a filter element (Japanese Patent Application Laid-Open No. 6-31991) filed by the same applicant.
No. 7) is used, and the partition net 26 is carried on the entire circumference by a loop-shaped elastic support frame 32 having a shape adapted to the inner diameter of the water pipe 1, as shown in FIG. A connecting rod 36 is connected to the support frame 32, and a jaw 37 is provided near the connecting portion of the connecting rod 36.
Is fixed, and a rubber or plastic stopper 39 for closing and sealing the opening 46 of the water pipe 1 is formed between the jaw 37 and the outer edge of the support frame 32. .

The support frame 32 is composed of an elastic frame body 33 and a flexible rubber or plastic strip 38 fixed to the outer peripheral surface of the frame body 33. And, this support frame 32, in a natural state not receiving an external force,
The support frame 32 also has an oval or elliptical shape in the up-down direction, and is configured to expand into a substantially circular shape corresponding to the inner diameter of the water pipe 1 by receiving a force from the outside. Adhesion with the inner peripheral wall 1a of the water pipe 1 is ensured.

A trapezoidal or truncated quadrangular pyramid detent member 40 that contracts downward is fixed to the upper end of the connecting rod 36. The detent member 40 is a partition net 2.
When 6 is inserted into the water pipe 1, after passing through the partition net 26, by engaging with a rectangular opening (not shown) formed inside the partition valve 15a, rotation or displacement is caused. It can be prevented.

Further, as shown in FIG.
An operating rod 41 is screwed onto the central upper surface of 0, and an operating handle 30 is provided at the tip of the operating rod 41 which is inserted in a watertight state at a lid portion at the upper end of the guide cylinder 25.

On the other hand, reference numeral 20 shown in FIG. 2 denotes a sweeper tool. This sweeper tool 20 is a device for discharging the chips produced when the water pipe 1 is perforated to the outside, After the boring process is completed, the boring device 2 is removed from the upper flange F of the sluice valve 14, and then the tip of the sweeper pipe 20a inserted inside through the sweeper insertion port 16 of the lid 13 attached to this flange F. The bottom of the sealed housing 4 or the chip collecting device 10
The chips that cannot be collected by a and b are sucked and discharged to the outside.

The flange F on the upper part of the sealed housing 4a
The lid body 13 attached to is provided with a peep window 18 adjacent to the sweeper insertion port 16 so that the inside of the sealed housing 4 can be seen.

Next, the operation of the chip collecting device having the above structure will be described.

First, as shown in FIG. 1, around the perforated portion of the water pipe 1 exposed in the excavated pit 3a, a vertically sealed half-separated housing 4 is mounted in a watertight state, and the hermetically sealed The sluice valve 14 is attached to the upper part of the housing 4, and the punching device 2 is further provided on the upper part of the sluice valve 14 via the flange F.
Install.

In the initial state of the chip collecting devices 10a and 10b, as shown in FIG. 4, the partition net 26 is housed inside the guide cylinder 25 of the partition valve 15a in a contracted state in an elongated shape. The operating handle 30 is operated with the partition valve 15a opened to connect the partition net 26 to the partition valve 15a.
And enters the water pipe 1.

Next, as shown in FIG. 5, the partition net 26 is further pushed down so that the lower end of the partition net 26 comes into contact with the bottom of the inner peripheral wall of the water pipe 1, and the partition net 26 is connected to the connecting rod 36 and the bottom of the inner peripheral wall. It begins to expand laterally gradually due to compression between and, and at the same time, the detent member 40 locks inside the sluice valve 15a.

When the partition net 26 is completely housed in the water pipe, the support frame 32 of the partition net 26 is moved by the operation of the operating handle 30 as shown in FIG.
It is pressed evenly over the entire circumference with sufficient pressure,
As a result, the partition net 26 is stretched across the water pipe 1.

In this way, as shown in FIG. 1, the inner peripheral wall of the water pipe 1 on both sides of the perforation device 2 has the chip collecting device 10
When it is partitioned by the partition nets 26a, 26b of a and 10b, the drilling device 2 is activated to rotate the cutter C, and the water pipe 1 is drilled in the uninterrupted water state.

When drilling the water pipe 1, a cutter C having a diameter larger than that of the water pipe 1 is used.
Although the water pipe 1 after cutting is completely cut, since both sides of the perforated portion of the water pipe 1 are supported by the foundations 6a and 6b, the horizontal state is maintained and the stable state is maintained.

The chips D generated by the perforating process of the water pipe 1 are the partition nets 26a or 2 arranged either before or after the holes perforated depending on the direction of the water flow in the water pipe 1.
Captured by 6b and blocked downstream flow.

When the boring process is completed, the cutter C is pulled up to above the sluice valve 14 to close the sluice valve 14, and then the piercing device 2 is removed from the flange F. At this time, remove the cut tube.

The punching device 2 is removed, and the flange F is attached to the lid 1.
When closed by 3, the sweeper tube 20 is passed through the sweeper insertion opening 16 of the lid 13 as shown in FIG.
By inserting a into the water pipe 1, the vicinity of both partition nets 26a and 26b in the water pipe 1 or the sealed housing 4
The chips D that have fallen to the bottom are sucked by the sweeper tube 20 a and are housed in the housing box 21.

When the collection of the chips D is completed in this manner, both partition nets 26a and 26b are lifted up by the operation of the operation handle 30 of the operation part 28 and located above the partition valves 15a and 15b. It is housed inside the guide cylinder 25.

Therefore, the respective sluice valves 15a, 15
With b closed, the chip collecting devices 10a and 10b are removed from the upper portions of the sluice valves 15a and 15b.
7 (a) to 7 (d) are operation explanatory views showing a state in which the opening of the upper end of the connecting short pipe from which the chip collecting device is removed is closed, and as shown in FIG. Instead of the chip collecting devices 10a and 10b, the inner lid inserting devices 42 are attached to the upper portions of the partition valves 15a and 15b, respectively.

Next, as shown in FIG. 7B, the inner lid 44 is moved to the hermetically sealed housing 4 by operating the inner lid inserting device 42.
When it is watertightly mounted in the opening at the upper end of the connecting short pipe 22 provided in the upper part in a temporarily fixed state, the inner lid inserting device 42 is removed as shown in FIG. By attaching the lid 45 to the flange 22a as shown in (d), the upper surface of the inner lid 44 is securely sealed and held, and a series of punching processes is completed.

As described above, in the present invention, by disposing the chip collecting devices 10a and 10b at two locations, upstream and downstream, of the perforated portion of the water pipe 1, the direction of the water flow is changed due to the fluctuation of the demanded portion or the like. Even if it changes, the chips D can be captured by either the upstream or downstream chips recovery device 10a, 10b, and moreover, the partition net 26 can be moved up and down through the opening 46 of the water pipe 1. , The capture and recovery of the chips D can be easily switched.

Further, since the partition net 26 expands to the inner diameter of the water pipe 1, the chips D can be taken in reliably, the chips D captured by being folded can be prevented from scattering, and a small sealed chamber can be provided. But it can be dealt with easily.

Further, the leakage of the chips D by the partition net 26 and the chips D dropped at a distance from the partition net 26 can be reliably recovered by using the sweeper tool 20 together.

Further, the chips D can be efficiently collected by inserting the sweeper tube through the sweeper insertion port 16 in the upper part of the sealed housing 4 used for cutting.

[0039]

According to the present invention, the following effects can be obtained.

(A) According to the first aspect of the present invention, since the chip collecting device is disposed at two locations upstream and downstream of the cutting portion of the fluid pipe, the direction of the water flow changes due to the fluctuation of the demand location. Also, the chips can be captured by either the upstream or downstream chip recovery device, and the capture and recovery of the chips can be easily switched by simply moving the net through the opening.

(B) According to the second aspect of the present invention, the net can be surely taken in by expanding the mesh portion to the inner diameter of the pipe, and by being folded, scattering of the caught chips can be prevented, And a small sealed room is enough.

(C) According to the third aspect of the present invention, it is possible to reliably collect and leak the chips by the net portion and the chips that have fallen away from the net portion with the sweeper tool.

(D) According to the invention described in claim 4, chips can be efficiently collected by inserting the sweeper tube from the sealed housing used for cutting.

[Brief description of drawings]

FIG. 1 is a side view showing a state in which a chip collecting device is provided at two locations, upstream and downstream, of a punching device attached to an existing fluid pipe in a watertight state according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a state in which chips after boring are collected by a chip collecting device and a sweeper tool which are provided at two locations on the upstream and downstream sides of a boring portion.

FIG. 3 is a perspective view of a chip collecting device.

FIG. 4 is a cross-sectional view showing a state where a net body is housed in a guide cylinder of a chip collecting device attached to a flange of a seal tube.

FIG. 5 is a cross-sectional view showing a state in which the net body is fed into the water pipe by operating the operation unit.

FIG. 6 is a cross-sectional view showing a state in which the net body fed into the water pipe expands and comes into contact with the inner wall of the water pipe.

7 (a) to 7 (d) are operation explanatory views showing a state in which the opening of the upper end of the connecting short pipe from which the chip collecting device has been removed is closed.

FIG. 8 is a cross-sectional view showing a conventional chip collecting device that takes out chips generated by a punching device from the inside of a sealed casing to the outside.

[Explanation of symbols]

1 water pipe 1a Inner wall 2 punching device 3 ground 3a pit 4 sealed housing 5, 6a, 6b Basic 10a, 10b waste collection device 13 Lid 14 Gate 15a, 15b Gate valve 16 sweeper insertion slot 18 peep windows 20 Sweeper Tool 20a sweeper tube 21 storage box 22 Connection short pipe 22a flange 25 Guide cylinder (sealed chamber) 25a flange 26 Partition Net 26a, 26b Partition net (mesh part) 28 Operation part 30 operation handle 32 Support frame 33 frame 36 connecting rod 37 jaws 38 strips 39 plug 40 Anti-rotation member 41 Operation rod 42 Inner lid insertion device 44 Inner lid 45 Lid 46 openings C cutter D chips F flange

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yoshinao Iwatani             2-16-16 Shimbashi, Minato-ku, Tokyo             View Shimbashi Building Room 706 Cosmo Koki Stock Association             In-house F-term (reference) 4D064 AA01 BA03 BA34 BA40

Claims (4)

[Claims] 1. A chip collecting device in an uninterrupted water cutting device which covers a fluid pipe with a hermetically sealed housing and cuts in an uninterrupted water state, wherein the chip collecting device includes a flexible mesh portion and the fluid pipe. The operation chamber is configured to move the mesh portion between the sealed chamber outside the opening and the inside of the fluid pipe inside the opening through the opening formed in the peripheral wall, and the operation portion is provided at two locations upstream and downstream of the cut portion of the fluid pipe. A chip recovery device in an uninterrupted water cutting device characterized by the above. 2. The chip collecting device in the uninterruptible water cutting device according to claim 1, wherein the mesh portion is in a folded state in the sealed chamber and is expandable to the inner diameter of the fluid pipe. 3. A sweeper tool can be thrown into the fluid pipe in addition to the chip collecting device.
A chip recovery device in the uninterrupted water cutting device according to. 4. The chip collecting device in the uninterrupted water cutting device according to claim 3, wherein the sweeper tool is capable of inserting a sweeper pipe from the hermetic housing and throwing the fluid pipe.