JPH047438Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention is a branch pipe joint, more specifically, it is equipped with a stopcock that shuts off in an emergency, and is particularly suitable for connecting branch pipes from existing main pipes through which fluids such as gas are flowing. This relates to a branch pipe joint used to take out.

[Conventional technology]

Conventionally, when taking out a branch pipe from an existing main pipe through which fluids such as gas are flowing, a branch pipe fitting with a cutter for drilling in the through hole of the joint body is used.
A hole was being punched into the existing main pipe using a cutter. In addition, after drilling a hole in the existing main pipe, the cutter is pulled up and the hole in the joint body is closed with the cutter, and the cap is screwed onto the joint body through packing to maintain airtightness and prevent damage to the branch pipe. In the case of an emergency, the hole in the existing main pipe would be closed off with the cutter. However, in conventional branch pipe fittings, the cutter is used to close the hole in the existing main pipe, so it is wasteful as it can only be used once. Because it is screwed in, it is time consuming and troublesome to close the hole in the existing main pipe with the cutter, and furthermore, gas etc. There was a risk of leakage. Another disadvantage is that if the cap is not tightened sufficiently, or if the cap loosens due to vibrations or fluctuations in the ground even if the cap is tightened sufficiently, leakage of gas, etc. may occur.

[Problem that the invention attempts to solve]

The present invention solves the above-mentioned drawbacks of the conventional technology, and instead of using a cutter for drilling, it uses a holding body that tightly fits into the through hole of the joint body and a sliding body that slides airtight inside the through hole. The configured stopper is inserted into the through hole, and the holding body and the sliding body double block the through hole to prevent gas etc. from leaking,
To provide a branch pipe joint in which a perforated part of an existing main pipe can be quickly closed in an emergency by a sliding body that slides airtightly inside a through hole.

[Means for solving problems]

The branch pipe joint of the present invention has a stopper inserted into the opening side of the through hole of a joint body having a through hole and a branch port connected to the through hole. This stopper includes a holder that is in close contact with the through hole and has a tool attachment hole;
It consists of a sliding body built into the holding body, and when the sliding body is pushed down, the bulge provided at the lower end of the sliding body slides airtightly within the through hole. It is a feature.

[Effect of invention]

The branch pipe joint of the present invention is used particularly when a branch pipe is taken out from an existing main pipe through which fluid such as gas is flowing, and the joint body is fused and joined to the existing main pipe. After connecting the branch pipe to the branch port of this joint body and drilling the existing main pipe with a drilling cutter,
Since the hole in the joint body is closed with a stopper instead of a cutter, the cutter can be used again for drilling.
The holder of this stopper is in close contact with the through hole of the joint body, and the sliding body built into the holder is also airtight with the through hole. It is doubly obstructed by In case of an emergency such as breakage of a branch pipe, push the sliding body of the stopcock toward the perforation of the existing main pipe. Then, the sliding body reaches the perforated portion while sliding airtightly within the through hole of the joint body, and the perforated portion is closed by the sliding body.

〔Example〕

Embodiments of the present invention will now be described with reference to the accompanying drawings.

Figure 1 is a partial cross-sectional view of the branch pipe joint, Figure 2 is a cross-sectional view of the stopcock, Figure 3 is a cross-sectional view showing the perforation state of the existing main pipe, and Figure 4 is a stopper in the through hole of the joint body. Fig. 5 is a cross-sectional view showing the state in which the stopper is inserted into the through hole of the joint body, and Fig. 6 is a cross-sectional view showing the state in which the perforation of the existing main pipe is closed. be.

In the branch pipe joint according to the present invention, as shown in FIG. 1, a stopper 3 is inserted into a through hole 2 of a joint body 1. The joint body 1 is made of, for example, polyethylene resin,
It is made of synthetic resin such as vinyl chloride and has a through hole 2 and a branch port 4 connected to the through hole 2. A female thread 5 is formed on the inner peripheral surface of the upper opening side of the through hole 2 of the joint body 1 . A stopper 3 is inserted into the opening side of the through hole 2. The stopper 3 is attached to the holder 6 as shown in FIG.
and a sliding body 7. The holding body 6 is
A male thread 8 is cut on the outer periphery, and is screwed into the female thread 5 of the through hole 2 so as to fit tightly into the through hole 2 and to be detachable. Further, the upper part of the holder 6 has a hexagonal tool attachment hole 9. This holding body 6
The airtightness of the through hole 2 is maintained by this. The sliding body 7 is built into the holding body 6 via a spring 10, and its lower end slides in the through hole 2 in an airtight manner. The lower end of the sliding body 7 is provided with a bulge 11 made of an elastic material such as rubber, and the bulge 11 slides in the through hole 2 in an airtight manner. . The sliding body 7 maintains the airtightness of the through hole 2. That is, the through hole 2 of the joint body 1 is always doubly blocked by the holding body 6 and the sliding body 7. Further, a tool attachment part 12 is provided at the upper end of the sliding body 7.
When a tool is attached to the tool attachment portion 12 and the slider 7 is pushed downward, the bulge 11 of the slider 7 closes the hole in the existing main pipe. Furthermore, when the sliding body 7 is rotated, the male thread 13 thereof and the female thread 14 of the holding body 6 are screwed together to maintain the closed state of the perforation of the existing main pipe.

Note that the reference numeral 61 indicates a protrusion provided on the holding body 6;
is a protrusion provided on the sliding body 7, which engages with the protrusion and prevents the sliding body 7 from rotating when a tool is attached to or removed from the tool mounting portion.

In addition, in FIG. 1, reference numeral 15 indicates the packing 1
This cap is made of synthetic resin and is screwed onto the external thread 17 of the joint body 1 via the cap 6.

The branch pipe joint as described above is used when a branch pipe is taken out from an existing main pipe through which fluid such as gas is flowing. To take out the branch pipe, as shown in FIG. 3, the joint body 1 is joined to the existing main pipe 18 by heat fusion, and the branch pipe 19 is connected to the branch port 4 of the joint body. Next, a shaft rod 20 having a handle at one end and a cutter attachment portion at the other end, an outer cylinder 21 airtightly attached to the shaft rod, and a removably attached to the outer cylinder 21 are attached. A drilling tool consisting of a cover tube 22 and an opening/closing plate 23 is used. The female thread of the cover tube 22 of the drilling tool and the male screw 17 of the joint body 1 are screwed together to attach the cover tube 22 to the joint body 1, and the opening/closing plate 23 is slid to open the inside of the cover tube 22. , the punching cutter 24 is attached to the cutter attaching portion of the shaft rod 20. After that, grasp the handle and push down the shaft 20. Then,
The cutter 24 descends inside the through hole 2 and cuts into the existing main pipe 18.
reach. Therefore, when the shaft rod 20 is rotated and further pushed down, the existing main pipe 18 is perforated. After drilling the existing main pipe 18, lift the handle, pull out the cutter 24 from the through hole 2, and pull it up to the upper part of the cover tube 22. After pulling up the cutter 24, slide the opening/closing plate 23 so that the through hole of the opening/closing plate 23 is located outside the covering tube 22, closing the inside of the covering tube 22, and screwing the outer tube 21 out of the covering tube 22. Axle rod 2
0 and pull out the cutter 24. Next, the cutter is removed from the cutter attachment portion, and a stopper 3 is attached to the cutter attachment portion in place of the cutter. To attach the stopper 3, as shown in FIG.
This is done by inserting the cutter attachment part into the tool attachment hole 9 of the holder 6, inserting the stopper 3 into the cover tube 22, and screwing the outer tube 21 into the cover tube 22. After that, the fifth
As shown in the figure, the opening/closing plate 23 is slid to open the inside of the cover tube 22, and the handle is rotated to screw the stopper 3 into the upper opening side of the through hole 2 and fix it there. Thereafter, the shaft rod 20 is removed from the holder 6, and the cover tube 22 is screwed off from the joint body 1. In this state, the through hole 2 of the joint body 1 is closed by the holding body 6 and the sliding body 7. After the cover tube 22 is screwed off from the joint body 1, the cap 15 is screwed onto the joint body 1, as shown in FIG. Then, the through hole 2 of the joint body 1
This is preferable because it is closed by the cap 15 in addition to the stopcock 3, which further prevents leakage of gas and the like. In addition, when closing the perforated part of the existing main pipe 18 as an emergency measure in case the branch pipe 19 is damaged, etc., after unscrewing the cap 15 from the joint body 1, as shown in FIG. A tool is used which has an attachment part 26 at one end, a handle 27 at the other end, and a stopper 28 at approximately the center. The attachment part 26 of the threaded rod 25 of this tool is screwed into the tool attachment part 12 of the sliding body 7, and the threaded rod 25 is screwed until the bulging part 11 of the sliding body 7 reaches the vicinity of the perforated part of the existing main pipe 18. Press down all at once. At this time, the sliding body 7 is pushed down against the spring 10, and its bulging portion 11 slides airtightly within the through hole 2, so that no fluid such as gas leaks. Also,
When the sliding body 7 is further rotated by the threaded rod 25,
The male thread 13 of the sliding body 7 and the female thread 14 of the holding body 6 are screwed together, and the perforation is closed by the sliding body 7, and the closed state is maintained. and,
After the repair work of the branch pipe 19 is completed, the threaded rod 25
When the slider 7 is rotated in the opposite direction to that described above, the bulging portion 11 of the slider 7 is pushed up and returned to its original position while sliding airtightly within the through hole 2 due to the repulsive force of the spring 10. At this time, fluid such as gas will not leak. Thereafter, the threaded rod 25 is unscrewed from the tool attachment portion 12 of the sliding body 7, and the cap 15 is screwed onto the joint body 1 again. Then, the through hole 2 of the joint body 1 is again closed by the stopper 3 and the cap 15.

In addition, in FIG. 1, a spring 10 is attached to the holder 6.
Although a stopcock with a built-in sliding body 7 via the stopper is illustrated,
The spring 10 is not necessarily required, and the male thread 13 of the impulse body 7 may be extended downward and may be screwed into the female thread 14 of the holder 6.

[Effect of idea]

As described above, according to the present invention, after the branch pipe is taken out, the through hole of the joint body is doubly blocked by the holder of the stopper and the sliding body. There is no need to worry about gas leaking from the holes even if the cap is not screwed together. In addition, since the sliding body of the stopper slides airtightly inside the through hole of the joint body,
Even when closing a perforation in an existing main pipe as an emergency measure in case a branch pipe is damaged, gas etc. will not leak.
This is a branch pipe joint that can quickly and safely close the pipe.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a partial cross-sectional view of a branch pipe joint, Fig. 2 is a cross-sectional view of a stopcock, Fig. 3 is a cross-sectional view showing the drilling state of an existing main pipe, and Fig. 3 is a cross-sectional view of a branch pipe joint. Figure 4 is a cross-sectional view when the stopper is inserted into the through hole of the joint body, Figure 5 is a cross-sectional view showing the state where the stopper is inserted into the through hole of the joint body, and Figure 6 is a cross-sectional view of the existing main pipe. It is a sectional view showing a state where a perforation part is closed. In the figure, 1 is the joint body, 2 is the through hole, 3 is the stopper, 4 is the branch port, 6 is the holding body, 7 is the sliding body, 9 is the tool attachment hole, 11 is the bulge, and 12 is the tool attachment Show part.

Claims (1)

[Scope of utility model registration request] A branch pipe joint in which a stopper is inserted into the opening side of the through-hole of a joint body having a through-hole and a branch port connected to the through-hole, the stopper being attached to a holder that is in close contact with the through-hole. and a sliding body built into the holding body, so that when the sliding body is pushed down, the bulge provided at the lower end of the sliding body slides airtightly within the through hole. A branch pipe joint characterized by: