JPH0343517B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for attaching a branching valve device to a fluid conduit such as a water pipe.

[Conventional technology]

In general, in water supply pipes, gunmetal water distribution valves are attached to branch ports drilled at key points on the surrounding wall, and tap water is supplied to consumers through branch pipes connected to the water distribution valves. It is starting to supply

As shown in FIG. 7, for example, a conduit 1 for water supply is a ductile cast iron pipe 2 with a mortar lining 3 provided on the inner periphery, and a branch port 4 bored in the peripheral wall with a valve body. An inflow pipe portion 7 of a water distribution faucet 6, which can be opened and closed by holding a knob 5a, is screwed together.

[Problem that the invention seeks to solve]

The conventional water faucet 6 has an inlet 8 and an outlet 9.
Because the diameter of the pipe is small, it is not possible to connect a branch pipe with a large flow rate for customers who use a large amount of water.

For this reason, a new valve device with a large inlet port is separately installed while the conventional water distribution faucet 6 is left open, but this requires drilling work for the conduit and also requires the number of branch ports. As this increases, the risk of water leakage increases.

In addition, the remaining water faucets will be removed when underground work is being done to bury gas pipes or electric wires, etc.
There is a risk that the valve may open due to shock due to incorrect work, etc., resulting in water leakage.

Furthermore, due to aging, fasteners such as bolts or nuts on water faucets may corrode, causing water leakage.

It is an object of the present invention to provide a method for installing a branching valve device in a fluid conduit in which a part of an existing old type of water faucet is left and most of it is replaced with a new water faucet; The object of the present invention is to provide a method for installing a new valve device for branching in a fluid conduit by drilling an enlarged diameter hole in the remaining inlet of the remaining old type water distribution faucet.

Another object of the present invention is to install a new valve device without stopping the flow of fluid in the conduit.
It is an object of the present invention to provide a new method for installing a valve device for branching in a fluid conduit, which allows installation work to be performed.

[Means to solve the problem]

A retaining pipe is attached to an existing water distribution faucet that has an inflow pipe part fitted into a branch port drilled in the conduit and a valve body that communicates the discharge port and the inflow port of the inflow pipe part through a straight hole when the valve is opened. After installing a water-tight stopper equipped with a stopper removably attached to the tip of the shaft and the shaft, and opening the valve body, the holding pipe and the shaft are advanced, and the inflow port is closed. By positioning the placing piece in the position, expanding the diameter of the placing piece by rotating the holding tube and the shaft rod relative to each other to close the inlet, and then removing the holding tube and the shaft rod, the placing piece can be opened. is left in the inlet, and then the upper part of the inlet pipe part is cut off and the upper part of the water stop including the valve body is removed to form the remaining inflow pipe part, and when the valve is opened, the discharge port and the flow are connected. A new valve device having a valve body that communicates with the inlet through a straight hole is watertightly attached to the outer periphery of the conduit with the inflow pipe portion located within the inlet, and after opening the valve body of the new valve device. , the holding tube and the shaft rod are inserted into the valve hole and engaged with the placement piece in the inflow pipe section, and the diameter of the placement piece is reduced by relative rotation of the holding tube and the shaft rod. A method for attaching a branching device in a fluid conduit (claim 1), characterized in that the piece is taken out from an inflow pipe section.

A retaining pipe is attached to an existing water distribution faucet that has an inflow pipe part fitted into a branch port drilled in the conduit and a valve body that communicates the discharge port and the inflow port of the inflow pipe part through a straight hole when the valve is opened. After installing a water-tight stopper equipped with a stopper removably attached to the tip of the shaft and the shaft, and opening the valve body, the holding pipe and the shaft are advanced, and the inflow port is closed. By positioning the placing piece in the position, expanding the diameter of the placing piece by rotating the holding tube and the shaft rod relative to each other to close the inlet, and then removing the holding tube and the shaft rod, the placing piece can be opened. is left in the inlet, and then the upper part of the inlet pipe part is cut off and the upper part of the water stop including the valve body is removed to form the remaining inflow pipe part, and when the valve is opened, the discharge port and the flow are connected. A new valve device having a valve body that communicates with the inlet through a straight hole is watertightly attached to the outer periphery of the conduit with the inflow pipe portion located within the inlet, and the valve body of the new valve device is opened. After that, the retaining tube and the shaft rod are entered into the valve hole and engaged with the placing piece in the inflow pipe section, and the diameter of the placing piece is reduced by a relative rotation operation between the holding tube and the shaft rod, The placement piece is taken out from the inflow pipe section, and then a drilling device with a drill is attached to the new valve device in a watertight manner, the valve body is opened, and a drill is inserted into the valve hole to remove the flow from the inflow pipe section. A method for attaching a branching valve device in a fluid conduit, characterized in that the diameter of the inlet is expanded using a drill (claim 2).

[Effect]

In claim 1, when the existing water distribution faucet and the new valve device are installed in a conduit, the branch port, the discharge port, and the inlet port are aligned in a straight line, In the valve device, when the valve is opened, the discharge port and the inflow port communicate with each other through a straight hole, so it is possible to insert and remove the installation piece vertically from above using the discharge port, making it possible to install the installation piece water stopper. , and operation is simplified.

In addition, when installing a new valve device, the existing water faucet, the opening and closing of the valve body of the new valve device, and the water stoppage with the installation piece are used alternately, so the installation can be done without stopping the flow of fluid in the conduit. Work is done.

In claim 2, in the new valve device that has been replaced, the inflow pipe portion, the discharge port, and the inflow port are aligned in a straight line, and further, the valve device is such that when the valve is opened, the discharge port and the inflow port are aligned in a straight line. Since it is communicated with the hole, it can be brought into contact with the inlet of the inflow pipe section and expanded to a hole diameter suitable for the new valve device.

〔Example〕

A first embodiment of the present invention will be described based on FIGS. 1 to 5. Note that FIG. 6 is also referred to for a part of the configuration.

Reference numeral 10 shown in FIG. 1 is a water stopper, in which a holding tube 11 that is slidable in the axial direction and has a handle 11a at the upper end is inserted into a cylindrical main body 10a. .

A shaft rod 12 having a handle 12a at the upper end is inserted into the holding tube 11, and the main body 10a and the holding tube 1 are connected together.
1, and an O-ring (not shown) is provided between the holding tube 11 and the shaft rod 12 to make them watertight.

13 shown in FIGS. 2 and 3 is a placed piece,
The bolt 14 has a small-diameter reverse threaded part 14a at its upper end, a slightly larger-diameter threaded part 14b below it, and a head 14c at its lower end. It consists of an elastic member, ie, an annular rubber 17, fitted through a ring-shaped holding fitting 16, and a nut 15 screwed into the threaded portion 14b of the bolt 14.

The reverse threaded portion 14a is cut into the center of the lower end surface of the shaft rod 12 and is screwed into the female threaded portion 12b, and the nut 15 is fitted into a hexagonal hole 11b formed at the lower end of the holding tube 11. ing.

In order to carry out the method of the present invention, first, as shown in FIG. The parts are screwed together via packing, and the installation piece water stopper 10 is installed.

Next, the valve body 5 of the water distribution faucet 6 is opened, and the installation piece 13 placed at the lower end of the installation piece water stop device 10 is inserted into the inlet 8 of the water distribution faucet 6.

As shown in FIG. 2, fit the hexagonal hole 11b at the lower end of the holding tube 11 into the nut 15, and
With the handle 12a fixed, rotate the handle 12a in the direction in which the bolt 14 is raised. Then, the head 14c of the bolt 14 and the nut 15 approach each other, compressing the annular rubber 17 and expanding its diameter, thereby opening the inlet 8.
Watertightly close the area.

Next, when the handle 12a is rotated in the opposite direction, the placed piece 1
3, only the shaft 12 rotates without rotating, the reverse threaded portion 14a of the bolt 14 and the female threaded hole 12b of the shaft 12 are unscrewed, and the mounting piece 13 is removed from the mounting piece water stopper 10. To separate.

Next, the installation piece water stop device 10 is removed from the water distribution faucet 6, the upper end of the inflow pipe portion 7 of the water distribution faucet 6 is cut horizontally, and the installation piece 1 is placed in the inlet port 8 as shown in FIG.
Only the lower end 7a of the inflow pipe section 7 containing the inflow tube 3 is left on the conduit 1.

Next, as shown in FIGS. 4 and 5, a new saddle-shaped valve device 18 is installed by positioning the lower end 7a of the inflow pipe section 7 within the inflow port.
It is attached to the outer circumference of the conduit 1.

The valve device 18 includes a valve body 18 having a linear passage connecting an upper discharge port 19 and a lower inlet port 20.
A has a valve body 21 housed therein, and a saddle-shaped board 22 is fixed to the lower end surface of the inlet 20. On both sides of this board 22, arc-shaped arms 22a, 22b are arranged along the outer periphery of the conduit 1. are arranged in series.

A pin 23 parallel to the axis of the conduit 1 is formed at the free end of one arm 22a, and a protruding piece 24 protruding in the radial direction is connected to the free end of the other arm 22b. (See Figure 6).

Reference numeral 25 denotes a semi-circular band-shaped band, at one end of which are arranged axially and rotatably hooked onto the upper surface of both ends of the pin 23.
A pair of arc-shaped locking pieces 25a are formed, and a bolt 26 facing upward is rotatably supported at the other end 25b.

As shown in FIGS. 4 and 6, the band 25 is brought into contact with the outer periphery of the lower half of the conduit 1, the bolt 26 is inserted through the protrusion 24, and the nut 27 is tightened to tighten the valve. The device 18 is attached to the outer circumference of the conduit 1.

At this time, by fitting the packing 28 into the recessed hole 22c formed in the lower end surface of the substrate 22 so as to be continuous with the inlet 20, the outer peripheral surface of the conduit 1 is kept watertight.

As shown in FIG.
8, the discharge port 19 of the valve body 18a is opened again.
In the above-mentioned arrangement piece water stopper 1 without the setting piece 13
0 in a watertight manner, and the shaft rod 12 is inserted into the valve hole 2 of the valve body 21.
1a, and its lower end reaches the placed piece 13.

Next, the placement piece 13 is removed by performing the operation opposite to that for inserting the placement piece 13 as described above.

That is, after screwing the female threaded hole 12b at the lower end of the shaft rod 12 into the reverse threaded portion 14a, the hexagonal hole 11b of the holding tube 11 is fitted into the nut 15, and only the holding tube 11 is rotated to tighten the nut 15. Pull up. Then, the annular rubber 17 elastically returns to a smaller diameter.
The placed piece 13 can be pulled out from the inlet 8.

After pulling up the setting piece 13 from the valve hole 21a of the valve body 21, the operating rod 29 is rotated to close the valve body 21, and the setting piece water stopper 10 is removed, thereby installing a new valve device 18 as described above. It can be used in place of the existing water faucet 6. That is, a new branch conduit 30 can be connected to the outlet 19 as shown in phantom lines in FIG.

Next, a second embodiment of the present invention will be described in which the effective inner diameter of a newly installed water faucet is desired to be increased.

In this case, as explained in the first embodiment, after the mounting piece 13 is removed, the punching device 31 is attached to the valve device 18 as shown in FIG.

The drilling device 31 includes a tubular main body 32 having a cap 32a at the lower end that can be screwed onto the outer periphery of the discharge port 19 of the valve device 18, and a male thread 32b cut into the upper outer circumferential surface of the main body 32 and a corresponding hole. A screw 33a is cut on the inner peripheral surface, and a handle 33 is provided on the outer periphery of the central part.
a capped cylindrical case 33 to which b is fixed;
It consists of a spindle 34 whose upper end passes through the top surface of the case 33, is prevented from coming off by a collar 34a, and can freely rotate within the case 33.

A ratchet spanner 35 can be engaged with the upper end of the spindle 34, and the upper end of a drill 36 having a blade 36a at the lower end is screwed and fixed to the lower end surface of the spindle 34.

After opening the valve body 21, turn the handle 33b to position the drill 36 directly above the inlet 8 of the inflow pipe section 7 through the valve hole 21a, and while rotating the ratchet spanner 35 back and forth, turn the handle 33b. When the case 33 is pushed down, the inlet port 8 is connected to the drill 3
The diameter is enlarged at 6 to form an enlarged diameter hole 37.

After the diameter expansion work, raise the drill and remove the valve body 21.
, and remove the drilling device 31.

Thereafter, the valve body 21 is opened for a short period of time to discharge chips, etc. from the discharge port 19 by water pressure, and then the valve body 21 is closed. As shown in FIG. Expanded hole 37 suitable for 18
A valve device is formed having:

Thereafter, a branch conduit is connected to the discharge port 19.

〔Effect of the invention〕

The present invention has the following effects.

(a) Since a new valve device can be installed as is using an old type of water distribution faucet, there is no need to increase the number of branch ports to be cut into the pipe, which prevents water leakage accidents and prevents leakage from the pipe. rate can be reduced.

(b) Since there is no need to drill a new branch port in the conduit, the location of the water distribution tap on the main water distribution pipe can be fixed;
Repair work and installation of the valve device do not require much effort and expense.

(c) Since the dressing piece from the waterproofer can be inserted from the discharge outlet of an existing faucet or a new valve device, the installation of a waterpiper is simplified and the operation is simplified. Ru.

(d) When expanding the diameter of the inlet of a water distribution faucet, the remaining portion of the existing faucet becomes a rust-proof core, which has the advantage of increasing durability.

(e) Since the opening and closing of the valve body of the new valve device and the water stoppage using the installation piece are used alternately, work can be carried out without stopping the flow of liquid in the conduit. For example, when repairing water pipes, it is possible to There will be no interruption in the water supply of customers who do not have water supply, there will be no impact on others due to repair work, and construction time will be shortened.

[Brief explanation of drawings]

1 to 5 are diagrams for explaining the first embodiment of the present invention, in which FIG. 1 is a partially cutaway front view of a faucet equipped with a water stopper, and FIG. , FIG. 3 is a vertical sectional view showing the branch port after cutting the inflow pipe section in FIG. 2, and FIG. 4 is a vertical sectional view showing the vicinity of the branch port in FIG. FIG. 5 is a longitudinal sectional view taken along the - line in FIG. FIG. 7 is a partially cutaway front view showing the installed state of an existing water faucet to which the present invention is applied;
FIG. 8 is a longitudinal sectional view of a valve device having an enlarged diameter hole. 1... Conduit, 4... Branch port, 5... Valve body, 6...
...Diversion faucet, 7...Inflow pipe section, 8...Inflow port, 9...
...Discharge port, 10...Okoma water stopper, 10a...Main body, 11...Holding tube, 11a...Handle, 11
b...Hexagonal hole, 12...Axis rod, 12a...Handle, 1
2b... Female threaded hole, 13... Placement piece, 14... Bolt, 14a... Reverse threaded part, 14b... Threaded part, 1
5...Nut, 17...Annular rubber, 18...Valve device, 19...Discharge port, 20...Inflow port, 21...
Valve body, 21a... Valve hole, 22... Substrate, 24...
Projection piece, 25... Band, 26... Bolt, 29...
...Operating rod, 30... Branching conduit, 31... Drilling device, 36... Drill, 37... Expanding hole.

Claims (1)

[Scope of Claims] 1. An existing valve having an inflow pipe part fitted into a branch port drilled in a conduit, and a valve body that communicates the discharge port and the inflow port of the inflow pipe part through a straight hole when the valve is opened. A water-tight water stopper is attached to the water distribution faucet, which includes a stopper that is removably attached to the tips of the holding pipe and the shaft, and after opening the valve body, the holding pipe and the shaft are connected. enter, position the placement piece at the inflow port, expand the diameter of the placement piece by relative rotation of the holding tube and the shaft rod,
The inlet is closed, and then the retaining tube and shaft are removed to leave the installation piece in the inlet, and the upper part of the inlet pipe is cut to remove the valve body of the water distribution faucet. By removing the upper part, a remaining inflow pipe section is formed, and a new valve device having a valve body that communicates the discharge port and inflow port through a straight hole when the valve is opened is installed, and the inflow pipe section is positioned within the inflow port. After opening the valve body of the new valve device, the holding tube and shaft rod are inserted into the valve hole and engaged with the placement piece in the inflow pipe section. 1. A method for installing a branching valve device in a fluid conduit, characterized in that the diameter of the placement piece is reduced by rotating the holding tube and the shaft relative to each other, thereby taking out the placement piece from the inflow pipe section. 2. The inflow pipe part is fitted into the branch port drilled in the conduit, and the valve body is connected to the inflow port of the inflow pipe part through a straight hole when the valve is opened. A water-tight stopper equipped with a mounting piece removably attached to the tips of the pipe and the shaft is installed in a watertight manner, and after opening the valve body, the holding pipe and the shaft are advanced, and the flow is stopped. Position the piece at the entrance, expand the diameter of the piece by rotating the holding tube and the shaft rod relative to each other,
The inlet is closed, and then the retaining tube and shaft are removed to leave the installation piece in the inlet, and the upper part of the inlet pipe is cut to remove the valve body of the water distribution faucet. By removing the upper part, a remaining inflow pipe section is formed, and a new valve device having a valve body that communicates the discharge port and inflow port with a straight hole when the valve is opened is installed, and the inflow pipe section is positioned within the inflow port. After opening the valve body of the new valve device, the holding tube and shaft rod are inserted into the valve hole and engaged with the placement piece in the inflow pipe section. Then, by reducing the diameter of the placing piece by rotating the holding pipe and the shaft relative to each other, the placing piece is taken out from the inflow pipe, and then a hole-drilling device with a drill is attached to the new valve device in a watertight manner. , open the valve body and insert a drill into the valve hole to open the inlet of the inflow pipe,
A method for installing a branching valve device in a fluid conduit whose diameter is expanded by a drill.