JPH05332489A - Branching construction method for distributing water pipe, and branching execution tool and distributing water pipe which are used therefor - Google Patents

Abstract

PURPOSE:To carry out the branch piping as necessary without complicating the execution work at a job site. CONSTITUTION:A branching construction for a distributing water pipe consists of the first process in which an opening/closing branching valve 15 is installed at a branched part 3 formed on the side surface of a distributing water pipe main body 1 having a through hole which is closed by a mountable/demountable plug body 6 and the second process for separating the plug body 6 from the branched part 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a branching method applied when branching to a water distribution pipe, which is a main pipe of a water supply pipe, a tool applied to the branching method, and a water distribution pipe.

[0002]

2. Description of the Related Art Conventionally, as this kind of water distribution pipe, for example, there is a device disclosed in Japanese Utility Model Laid-Open No. 3-73790.

That is, in this conventional one, a branch valve is internally mounted in advance at a plurality of branch portions provided on the side surface of the water distribution pipe body. According to such a water distribution pipe, a branch pipe or the like is directly provided at the branch portion. Since there is a possibility of piping, there is an advantage that a series of branch piping work on site becomes simple.

[0004]

However, in the above-mentioned prior art, since the branch valve or the like greatly projects outward from the water distribution pipe main body, for example, at the time of delivery to the site or actual pipe construction. However, there is a problem in that the branch valve or the like is easily damaged by an impact from the outside or the like, which in turn hinders the opening and closing of the branch valve.

Further, the branch pipes are not necessarily installed in all the branch parts, and there are cases where only some of the branch parts are used and the other branch parts are unnecessary. Since the branch valves are internally installed in all the branch parts, there is a disadvantage that the cost is unnecessarily increased.

[0006] On the other hand, when connecting a branch pipe to a water distribution pipe, there is one that processes the water distribution pipe on site to form the branch pipe.

That is, according to this conventional means, as shown in FIG. 14, first, a saddle band 62 is provided on the outer circumference of the cylindrical water distribution pipe main body 1a.
With a ring attached, and in the state in which the water faucet 64 having the water shutoff valve 63 is attached to the saddle band 62, a perforation device 66 in which a water shut-off seal is applied via an adapter 65 to the upper part of the water faucet 64. After mounting, the through hole is bored in the water distribution pipe body 1a in this state, and then the branch pipe is connected to the water diversion plug 64 via a joint or the like.

However, in such means, the work of mounting the saddle band 62 and the punching work by the punching device 66 are very complicated, and the burden on the operator is also great, so that the work There was a big drawback that it lacked in nature.

Therefore, the present invention has been made in order to solve the above-mentioned conventional problems, and makes it possible to perform branch piping as necessary without complicating the construction work on site. Is an issue.

[0010]

In order to solve the above problems, the present invention has a through hole 5 closed by a removable plug body 6 and is provided on the side surface of a water distribution pipe body 1. This is a branching method for a water distribution pipe, which comprises a first step of mounting a branch valve 14 that can be opened and closed on the branch portion 3 and a second step of detaching the plug 6 from the branch portion 3.

[0011]

Therefore, in the branching method characterized by the above construction, the branch valve 14 mounted on the branching portion 3 of the water distribution pipe body 1 is opened, and the plug body 6 is inserted through the branch valve 14. The branch valve 14 may be closed after the separation, and the fluid can be branched and supplied to the branch pipe directly or indirectly connected to the branch portion 3 by opening the branch valve 14.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A water distribution pipe as an embodiment of the present invention will be described below with reference to the drawings.

First Embodiment In FIG. 1, reference numeral 1 denotes a water distribution pipe main body of a different diameter type having a large diameter receiving port 2 formed at one end, and the inner peripheral surface thereof is so-called powder coated. It will be done. Reference numeral 3 denotes a substantially cylindrical branch portion provided on the side surface of the water distribution pipe main body 1 at predetermined intervals in the axial direction and the circumferential direction, and at the substantially center of the branch portion 3, as shown in FIG. A through hole 5 having a threaded portion 4 is formed on the peripheral surface.

In the figure, reference numeral 6 denotes a plug body screwed into an anticorrosion sleeve 7 mounted in the through hole 5, and a screw hole is provided at the center of a flat quadrangular wrench 6a projecting on the upper surface thereof. 6b is perforated. Reference numeral 8 is a protective cap screwed to the threaded portion 4 of the branch portion 3 of the water distribution pipe main body 1 to protect the plug body 6 and the like, and reference numerals 9, 10, 11 denote O-rings for sealing, respectively.

The water distribution pipe according to the present embodiment has the above-mentioned structure. When the water distribution pipe is branched, it is carried out as follows.

First, after the protective cap 8 is unscrewed from the screw portion 4 of the predetermined branch portion 3 to be branched, the tubular adapter 12 and the inside of the adapter 12 are opened and closed by the screw portion 4 as shown in FIG. One end of a branch valve (14) consisting of a freely mounted ball valve (13) is screwed.

Next, a branching tool is attached to the other end of the adapter 12.
15 is attached, and the branch pipe fitting 15 is configured as follows.

That is, as shown in FIG. 3, a threaded portion 16 is formed on the inner peripheral surface.
And a lid 18 having an insertion hole 17 formed on the top surface thereof, and a wrench of the plug body 6 movably inserted and attached to the insertion hole 17 of the lid 18 via an O-ring 19. A cylindrical wrench handle 21 having a wrench portion 20 that can be inserted into the hook 6a, and a screw portion that is movably inserted and attached to the wrench handle 21 and that can be screwed into a screw hole 6b of the plug body 6 at one end. 22 and a rod 24 provided with a handle 23 at the other end, and the seal between the rod 24 and the spanner handle 21 is O.
Designed by ring 25.

Then, the cover 18 of the branching tool 15 is attached to the branching valve 14
It is installed via the ball retainer 27 of. After that, the rod 24 is moved to the plug body 6 side together with the spanner handle 21, and the rod 24
Is rotated, the screw portion 22 is screwed into the screw hole 6b of the plug body 6, and then the wrench handle 21 is fitted into the spanner hook 6a of the plug body 6.

Further, when the spanner handle 21 is continuously rotated, the plug body 6 is unscrewed from the anticorrosion sleeve 7 mounted in the through hole 5 of the water distribution pipe body 1. After that, the rod 24 is moved to the lid 18 side together with the spanner handle 21, and the ball valve 10 of the branch valve 14 is closed.

Next, as shown in FIG. 4, the lid 18 is unscrewed from the branch valve 14, the branch pipe is connected to the socket 27 through a joint pipe such as a flexible join pipe, and the ball valve 10 of the branch valve 14 is opened. Then, the fluid is supplied to the branch pipe.

Thus, in the present embodiment, not only the branch piping work can be performed without producing one cutting water in the water distribution pipe, but also the work of mounting the branch valve 14 and removing the plug body 6 is described above. Since it can be done very easily using such a device, a series of construction work can be simplified,
Therefore, on-site work can be performed quickly without complication.

On the other hand, when the branch supply of the fluid to the branch pipe becomes unnecessary, if the work reverse to the above-mentioned work is performed, the through hole 5 of the unnecessary branch portion 3 is inserted into the plug body 6. There is also an advantage that it can be closed by.

Second Embodiment Referring to FIG. 5, reference numeral 1 denotes a water distribution pipe main body of a different diameter type having a large diameter receiving port 2 formed at one end, and the so-called powder coating is applied to the inner peripheral surface thereof. It will be done. Reference numeral 3 denotes a substantially cylindrical branch portion provided on the side surface of the water distribution pipe main body 1 at predetermined intervals in the axial direction and the circumferential direction. A through hole 5 having a threaded portion 4 is bored on the inner peripheral surface, and a threaded portion 28 is engraved on the outer peripheral surface on the tip side.

In FIG. 6, reference numeral 29 denotes a spindle rotatably inserted in and attached to an insertion hole 30 of a mounting seat 3a projecting from a side surface of the branch portion 3. A spindle nut 32 is attached to a screw portion 31 on the outer peripheral surface of the mounting seat 3a.
The end of the spindle 29 can slightly project inward from the inner wall of the branch portion 3 when tightened.

Reference numeral 33 denotes a plug body screwed to the threaded portion 4 so as to close the through hole 5 of the branch portion 3, and a prismatic spanner hook 33a is projectingly provided at the substantially center of the upper surface thereof. Reference numeral 34 is an O-ring for sealing, which is fitted onto the lower end of the plug 33.

The water distribution pipe according to the present embodiment has the above-mentioned structure, and when connecting a branch pipe to this water distribution pipe, the application tool 35 as shown in FIG. 7 is used.

In the figure, 36 is a screw part on the inner peripheral surface of both ends.
A water shutoff valve composed of a tubular adapter 39 in which 37 and 38 are formed respectively, and a ball valve 40 which is openably and closably mounted in a bulging portion 39a formed at the other end, and is attached to the ball valve 40. The flow passage 39b can be opened and closed by a spindle (not shown). Reference numeral 41 denotes a socket screwed to the screw portion 39c on the other end side of the adapter 39. 42 is a ball valve 40
And a resin ring body interposed between the inner wall of the adapter 39 and the socket 41.

Reference numeral 43 denotes a lid body screwed to the tip of the socket 41,
An insertion hole 43a is formed substantially in the center of the top surface.
A rod 46 having a spanner portion 44 capable of being fitted into the spanner hook 33a of the plug 33 and a handle 45 at the base end is inserted and attached to a at a in such a manner as to be movable in the axial direction thereof.

In FIG. 8, reference numeral 47 indicates another branching tool, and a rod 49 is movably inserted into an insertion hole 48a of a cover 48 having the same structure as the cover 43 of one branching tool 35. A cylindrical portion 51 which is inserted and attached and at which one end of which a socket 50 can be fitted.
And a cylindrical holding portion 54 capable of holding the socket 50, the branch valve 52, and the ring body 53 in an inserted state, and a grip 55 is provided at the other end.

When the water distribution pipe is branched by using the branching tools 35, 47, it is carried out as follows.

First, as shown in FIG. 9, the adapter 39 of the water shutoff valve 36 to which the lid 43 of the one branching tool 35 is attached is screwed to the threaded portion 37 of the branching portion 3 of the water distribution pipe main body 1 and both of them. Connect.
The ball valve 40 of the water shutoff valve 36 is left open.

After that, the rod 46 of the lid 43 is moved to the plug 33 side, and the rod 46 is rotated while the spanner portion 44 is inserted into the spanner hook 33a of the plug 33, and the water distribution pipe main body is rotated. The plug 33 is unscrewed from the threaded portion 4 of the branched portion 3 of No. 1.

Next, the stopper 33 is attached to the spanner 33a of the rod 46.
After the rod 46 is moved to the lid 33 side while being held by, the bow valve 40 of the water shutoff valve 36 is rotated by the spindle to close the flow passage 39b. As a result, the water in the water distribution pipe body 1 is stopped, and the fluid does not flow out.

After that, the lid 43 is unscrewed from the socket 41, and the socket 50 and the branch valve 52 with the ring bodies 53 fitted on both ends are inserted into the holding portion 54 of the rod 49 as shown in FIG. After the lid 48 of the other set branching tool 47 is screwed into the socket 41, the ball valve 40 of the water shutoff valve 36 is rotated by the spindle to open the flow passage 39b. In this case, the lid 43
This prevents the fluid from flowing out.

Then, with the spindle nut 32 fastened to the mounting seat 3a of the branch portion 3 slightly unscrewed and the spindle 29 pulled out, the rod 49 is moved until the branch valve 52 and the like come into the branch portion 3. Is moved to the branching portion 3 side of the water distribution pipe body 1, the rod 49 is rotated to screw the socket 50 into the threaded portion 4 of the through hole 5 of the branching portion 3, and the spindle 29 of the branch valve 52. Insert it into the groove 52a and insert it into the spindle nut.
By fastening 32 to the mounting seat 3a, the branch valve 52 can be opened and closed by rotating the spindle 29.

Then, as shown in FIG. 10, with the branch valve 52 closed, the water shutoff valve 36 is unscrewed from the branch part 3, and then a joint (not shown) such as a flexible joint pipe is attached to the socket 50. The branch piping work is completed by connecting the branch pipe (not shown) via the.

After that, the spindle 29 is rotated to branch the valve.
When 52 is opened, fluid is supplied to the branch pipe.

Therefore, even in this embodiment, a series of branching operations can be performed easily and quickly.

Further, in the branching method according to each of the above-mentioned embodiments, since the water distribution pipe is branched as required, the structure of the water distribution pipe itself becomes simple and the cost can be reduced. In addition to being able to work, it is less likely that the branch part 3 will be damaged by external impacts, such as when carrying it into the site or when actually performing piping work. Therefore, it is possible to install the branch valves 13 and 52 and to open and close them. It does not hinder.

Furthermore, the branching tool 15, 3 in each embodiment
The 5 and 47 also have an extremely simple structure, and therefore have an advantage that they can be manufactured at low cost.

In the second embodiment, two types of branching tool 3 are used.
Although a series of operations were performed using 5,47, for example, as shown in FIG. 11, both functions of the branching tool 35,47, that is, the plug 33 can be detached and the branch valve 52 can be attached to the branching section 3. If you use the branching tool 57 with the rod 56 that has the function,
There is no need to use 35 and 47 properly, which is convenient for work.

Further, in the second embodiment, especially when the plug body 33 is detached from the branch portion 3 of the water distribution pipe body 1 located below the water distribution pipe body 1, or when the branch valve 52 is mounted. Although there is no problem, when performing such work on the branch portion 3 located on the upper side, the plug 33, the branch valve 52, etc. are installed on the rod 4
There is a risk of breaking out of 6,49.

In contrast to the former, for example, as shown in FIG. 12, the screw portion 4 of the branch portion 3 is formed on the inner peripheral surface of the spanner portion 59 of the rod 58.
It is sufficient to form a screw portion 59a in the opposite direction to the above and form a screw portion 33b on the outer peripheral surface of the spanner hook 33a of the plug body 33 so that they can be screwed together. In the latter case, for example, as shown in FIG. By attaching a rubber ring body 61 to the tip of the rod 60 so that the branch valve 52 and the like can be held, it is possible to easily pull out the rod 60 after the branch valve 52 is attached. Become.

Further, in the second embodiment, the spindle 29 is provided at the branch portion 3 of the water distribution pipe body 1, but it is of course possible to mount a branch valve having a spindle on the branch portion 3, and it is not always necessary to install the branch portion 3. It is not necessary to provide the spindle 29 in the.

In addition, the shapes of the water distribution pipe main body 1 and the branching tool, and the specific piping configuration between the water distribution pipe main body 1 and the branch pipe can be arbitrarily changed within the scope intended by the present invention. Is.

[0047]

As described above, the branching method of the water distribution pipe according to the present invention can be performed by the extremely simple work of removing the plug and installing the branch valve, and therefore, compared with the conventional method using the piercing device. The workability is remarkably excellent.

Further, since the water distribution pipe is branched as required, the structure of the water distribution pipe itself is simpler than that of the conventional one in which branch valves are provided at all branch portions. Therefore, the cost can be reduced, and the branch portion is less likely to be damaged by an external impact, for example, at the time of delivery to the site or at the time of actual pipe construction, so that the branch valve mounting work or the The unique effect is that it does not hinder the opening and closing of the branch valve.

Furthermore, since the branching tool and the water distribution pipe itself have an extremely simple structure, there is a practical effect that they can be manufactured at low cost.

[Brief description of drawings]

FIG. 1 is a partially sectional front view of a water distribution pipe showing an embodiment according to the present invention.

FIG. 2 is a sectional view of the same main part.

FIG. 3 is a cross-sectional view of essential parts showing a state in which a branching tool is attached to a water distribution pipe body.

FIG. 4 is a cross-sectional view showing a state where the branch construction work is completed.

FIG. 5 is a cross-sectional view of a water distribution pipe according to another embodiment.

FIG. 6 is a sectional view of the same main part.

FIG. 7 is a sectional view of a main part of a branching tool according to another embodiment.

FIG. 8 is a sectional view of a main part of a branching tool according to another embodiment.

FIG. 9 is a cross-sectional view of essential parts showing a state in which a branching tool is attached to a water distribution pipe body.

FIG. 10 is a cross-sectional view of essential parts showing a state where branching work has been completed.

FIG. 11 is a cross-sectional view of essential parts showing another branching tool.

FIG. 12 is a main-portion cross-sectional view showing a state in which another branching tool is attached to the water distribution pipe body.

FIG. 13 is a cross-sectional view of essential parts showing a state in which another branching tool is attached to the water distribution pipe body.

FIG. 14 is a cross-sectional view showing a conventional example.

[Explanation of symbols]

1 ... Distribution pipe main body 3 ... Branch part 5 ... Through hole 6 ... S plug body 6a ... Spanner hook 6b ... Screw hole 12 ... Adapter 13 ... Ball valve 14 ... Branch valve 17 ... Insertion hole 18 ... Lid body 20 ... Spanner part 21 … Spanner handle 22… Screw part 24… Rod 33… Stopper 36… Water stop valve 39… Adapter 40… Ball valve 43… Lid body 43a…
Insertion hole 46 ... Rod 48 ... Lid 48a ...
Insertion hole 49 ... Rod 52 ... Branch valve 56 ... Rod

Claims (9)

[Claims] 1. A first step of mounting an openable branch valve 14 on a branch portion 3 provided on a side surface of a water distribution pipe body 1 having a through hole 5 closed by a removable plug body 6. And a second step of separating the plug body 6 from the branch portion 3, a method for branching a water distribution pipe. 2. The water distribution pipe according to claim 1, wherein the branch valve 14 comprises an adapter 12 that can be mounted on the branch portion 3 of the water distribution main body 1 and a ball valve 13 that is openably and closably mounted in the adapter 12. Branching method. 3. A branch valve (14) having an openable and closable ball valve (13) inside a tubular adapter (12) and one end of which is detachable from a branch section (3) of a water distribution pipe body (1), and another branch valve (14). The lid 18 has a detachable lid 18 at its end, and the insertion hole 17 formed in the top surface of the lid 18 has a top of the plug 6 for closing the through hole 5 of the branch 3 at its tip. A cylindrical wrench handle 21 having a wrench portion 20 that can be inserted into a wrench hook 6a protruding from the surface
Is movably inserted and attached, and a rod 24 having a threaded portion 22 that can be screwed into a screw hole 6b formed in a wrench hook 6a of the plug body 6 is movably inserted into the wrench handle 21. A branching tool characterized by being worn. 4. A water shutoff valve 36 which can be opened and closed is attached to a branch portion 3 which has a through hole 5 closed by a removable plug 33 and is provided on a side surface of a water distribution pipe body 1. Steps, a second step of removing the plug 33 from the branch portion 3, a third step of mounting a branch valve 52 on the branch portion 3, and a fourth step of removing the water shutoff valve 36 from the branch portion 3. A distribution pipe branching method characterized by consisting of 5. A cylindrical adapter 39 and a adapter 39 that can be opened and closed at a branching portion 3 provided on a side surface of a water distribution pipe body 1 having a through hole 5 closed by a removable plug body 33. A first step of mounting one end of a water shutoff valve 36 consisting of a ball valve 40 installed inside, and a detaching means at the other end of the water shutoff valve 36, which is capable of detaching the plug 33 at the tip. After mounting the lid body 43 in which the rod 46 having the rod 46 is movably inserted, the rod 46
Is moved to the plug body 33 side, the plug body 33 is separated by the separating means, and the rod 46 is held while the plug body 33 is held by the separating means.
Second step of closing the ball valve 40 of the water shutoff valve 36 to remove the lid body 43 from the water shutoff valve 36 and detaching the stopper 33, after moving the After the rod 48 having a branch valve holding means capable of holding the branch valve 52 is movably inserted and attached to the water shutoff valve 36, the ball valve 40 of the water shutoff valve 36 is opened. , Further the rod of the lid 48
The third step of moving 49 to the branch portion 3 side of the water distribution pipe main body 1 and attaching the branch valve 52 held by the branch valve holding means of the rod 49 to the branch portion 3, and from the branch portion 3. A method for branching a water distribution pipe, comprising a fourth step of removing the water shutoff valve 36. 6. A cylindrical adapter 39 and a adapter 39 that can be opened and closed at a branching portion 3 provided on a side surface of a water distribution pipe body 1 having a through hole 5 closed by a removable plug body 33. A first step of mounting one end of a water shutoff valve 36 consisting of a ball valve 40 installed inside, and a detaching means at the other end of the water shutoff valve 36, which is capable of detaching the plug 33 at the tip. After attaching the lid body 43 in which the rod 56 has the movably inserted and attached, the rod 56
Is moved to the plug body 33 side, the plug body 33 is separated by the separating means, and the rod 56 is held while the plug body 33 is held by the separating means.
The second step of closing the ball valve 40 of the water shutoff valve 36 to remove the lid body 43 from the water shutoff valve 36 and detaching the plug body 33, after moving the While holding the branch valve 52 by the stopper holding means provided at the tip of the rod 56 of the body 43, the lid 43 is attached to the water shutoff valve 36 again to open the water shutoff tap 36, and the lid The rod 56 of 43 is connected to the water distribution pipe body 1
Of the branch valve 52 to the branch portion 3 side.
And a fourth step of separating the water shutoff valve 36 from the branch part 3, and a branching method for a water distribution pipe. 7. A water shutoff valve (36) having a ball valve (40) openable and closable inside a tubular adapter (39) and one end of which is detachably attached to a branch portion (3) of a water distribution pipe body (1), and the water shutoff valve (36). The insertion hole 43a formed on the top surface of one lid 43 is formed with a pair of detachable lids 43, 48 at the other end of the A rod 46 having a detaching means capable of detaching the stopper 33 for closing 5 is movably inserted and attached, and a branch valve 52 is provided at the tip end in an insertion hole 48a formed in the top surface of the other lid 48. A branching tool characterized in that a rod 49 having a branching valve holding means capable of mounting the branching valve 52 on the branching part 3 while holding it is movably inserted. 8. A water shutoff valve (36) having a ball valve (40) openable and closable inside a tubular adapter (39) and one end of which can be attached to and detached from a branch section (3) of a water distribution pipe body (1), and the water shutoff valve (36). A plug 43 for closing the through hole 5 provided in the branch portion 3 at the tip is formed in the insertion hole 43a formed in the top surface of the lid 43 at the other end of the lid 43. A rod 56 having a detaching means capable of detaching the body 33 and a branch valve holding means capable of mounting the branch valve 52 on the branch portion 3 while holding the branch valve 52 is movably inserted and attached. A characteristic branching tool. 9. A branch portion 3 which can be fitted with a branch valve and has a through hole 5 is provided on a side surface of the water distribution pipe body 1, and a detachable plug body is fitted in the through hole 5. A water distribution pipe characterized by that.