JPS6224871Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention has a passageway for inserting and removing a punching machine and for connecting a branch pipe, and the passageway is airtightly communicated with a branch port formed by a punching machine in the main pipe. A sliding valve body for closing the passage is removably attached to a joint body that is attached to a pipe, and a passage formed in the joint body for insertion and removal of the sliding valve body is removed. This invention relates to a non-flow type branch/outlet joint that is provided with a closure that closes in a state.

Conventionally, as shown in FIG. 6A, a sliding valve body 7A for closing a passage 6A for inserting and removing a drilling machine and for connecting a branch pipe, which is provided in a joint body 6 attached to a main pipe P, has been used.
is configured so that it can be pressed against the valve seat 14 of the joint body 6 with a bolt 15, and after forming a branch port 9 in the main pipe P with a drilling machine 8 inserted from the passage 6A, the drilling machine 8 is used to prevent leakage from the passage 6A. When the sliding valve body 7 is blocked,
A closes the passage 6A, and the punching machine 8
After removing and connecting the branch pipe 10, the sliding valve body 7A
was opened to allow branch pipe connections to be made without leakage while fluid transport via the main pipe P continued. In addition, as shown in FIG. 6B, the sliding valve body 7
With A removed from the joint body 6, the sliding valve body 7
The outer opening 6C' of the insertion/removal passage 6C of A is configured to be closed by a valve body 17 which is biased to close by a spring 16 to prevent leakage from the joint body 6 after construction.

However, it is actually extremely difficult to prevent leakage in a highly reliable manner over a long period of time with only the valve body 17 closed by the spring 16, and especially when the joint body 6 is buried, earth pressure and There was a drawback that the valve body 17 was likely to open due to water pressure or the like, resulting in a large amount of leakage.

The purpose of this invention is to reliably prevent leakage after installation due to the structure for inserting and removing the sliding valve body, and to make the work involved in inserting and removing the sliding valve body difficult. The key is to prevent this from happening.

The characteristic configuration of the present invention is that a closure that closes a passage for insertion and removal of a sliding valve body formed in a joint body when the sliding valve body is removed is rotatably attached to a closure fitting portion of the joint body. , the through hole through which the sliding valve body is inserted and removed is formed in a shape that is wider toward the outer opening side of the sliding valve body insertion/removal passage in an open state; A cap is provided on the closure and arranged so as to be fully closed by the closure fitting portion, and is detachably attached to the closure insertion hole for sealing the closure insertion hole in the attached state of the closure. The functions and effects are as follows.

In other words, if the cap is removed from the closure fitting part and the closure is rotated to set the through hole so that it becomes wider toward the outer opening side of the passage for inserting and removing the sliding valve body, the hole in the joint body will open. In order to block the passage for machine insertion/removal and branch pipe connection, the operation of inserting the sliding valve body into the joint body can be easily and quickly performed by passing the closure smoothly.

When removing the sliding valve body from the joint body, after pulling out the sliding valve body, rotate the closure so that the through hole is completely closed by the closure fitting part, and then attach the cap to the closure fitting part. When the closure is installed and the closure insertion hole of the closure fitting is sealed, the action of the closure and the cap will cause the closure to close.
Compared to the conventional technology mentioned above, leakage can be reliably prevented for a long period of time, and even if the joint body is buried, the closure will not be rotated by earth pressure, water pressure, etc., and leakage can be reliably prevented. .

As a result, leakage caused by the structure for inserting and removing the sliding valve body can be reliably prevented for a long time even if the joint body is buried. The operation is as simple as installing the valve body, and the sliding valve body can also be easily inserted into the closure, making it easy to insert and remove the sliding valve body as a whole, and improve leak prevention performance and operation. It is now possible to provide a non-flow type branch/outlet joint that is excellent in both properties.

Next, examples will be shown.

As shown in FIGS. 1 and 2, a passage 6A for insertion and removal of a punching machine and for connecting a branch pipe is formed in the joint body 6 attached to the main pipe P. A connecting flange 6B is provided to connect to the connecting flange 6A for bolt connection, so that a branch port 9 can be formed in the main pipe P using a punching machine 8 attached to the connecting flange 6B, and the passage 6A is airtightly connected to the branch port 9. The connecting flange 6B is configured so that it can communicate with the
The branch pipe 10 attached to the main pipe P can be connected to the main pipe P through the branch port 9 and the passage 6A.

A shutter device 7, which is equipped with a sliding valve body 7A for closing the passage 6A, which can be slidably operated using a rotary handle and a bolt, is removably connected to the joint body 6 by bolts, and a passage for insertion and removal of the sliding valve body 7A is formed. 6C is formed inside the joint body 6, and a closure 3 having a through hole 3A for inserting and removing the sliding valve body 7A is rotatably fitted into the closure fitting part 1 of the joint body 6. When the sliding valve body 7A is removed, the sliding valve insertion/removal passage 6C can be sealed with the closure 3, and the outer opening 6C' of the passage 6C can be sealed with the lid bolted to the joint body 6. It is structured as follows.

In short, while continuing fluid transport through the main pipe P, drilling the hole, connecting the branch pipe 10, and recovering the shutter device 7, leakage prevention using the perforator 8, closure 3, and shutter device 7 during drilling, and the branch pipe The structure is such that leakage can be prevented by the valve body 7A when the shutter 10 is connected, and leakage can be prevented by the closure 3 and the like after the shutter device is recovered.

As shown in FIGS. 3 to 5, to form the closure 3, an elastic body 5 made of natural, synthetic rubber, soft urethane, etc. is fitted onto the cylindrical main body 3A, and the elastic body 5 Large-diameter support parts 4 located at both ends of the closure part 1 are integrally formed, and an elastic body 5 is pressed against the inner circumferential surface 2 of the obturator fitting part 1 to improve sealing performance. The structure is such that excessive deformation of the elastic body 5 due to the fluid pressure X is prevented by the contact between the inner circumferential surface 2 and the inner circumferential surface 2, thereby improving durability and high pressure resistance.

In addition, a square shaft 11 for rotation operation is provided on one end side of the closure 3.
is provided, and the closure insertion hole 13 of the closure fitting part 1 is inserted into the closure 3.
Attach the cap 12, which is sealed when it is installed, to the threaded part 1.
A is provided in the closure fitting part 1 so that it can be attached and detached freely.

Then, with the through hole 3A for inserting and removing the sliding valve body in an open state, the outer opening 6 of the passage for inserting and removing the sliding valve body 6C
It is formed into a shape that is wider toward the C' side, and is arranged so that it is fully closed by the closure fitting part 1 as the closure 3 rotates.

[Brief explanation of drawings]

1 to 5 show embodiments of the present invention,
Figure 1 is a sectional view with the shutter device and drilling machine installed, Figure 2 is a sectional view of the completed construction, and Figure 3 is a sectional view of the construction completed.
The figure is a cross-sectional view taken along the line -- in FIG. 1, and FIG. 5 is a cross-sectional view of the closing member mounting portion in a blocked state. FIGS. 6A and 6B show a conventional example, in which A is a cross-sectional view of a state in the middle of construction, and FIG. 6B is a cross-sectional view of a state of completed construction. 1... Closer fitting part, 3... Closer, 3A... Through hole, 6... Joint body, 6A... Passage, 6C... Passage, 6C'... Outer opening, 7A... Sliding valve body, 8
...Drilling machine, 9... Branch, 12... Cap,
13... Closure insertion hole, P... Main pipe.

Claims (1)

[Scope of utility model registration request] It has a passage 6A for insertion and removal of a punching machine and for connecting a branch pipe, and is attached to the main pipe P with the passage 6A communicating in an airtight manner with a branch port 9 formed in the main pipe P by a punching machine 8. A sliding valve body 7A for closing the passage 6A is removably attached to the joint body 6,
This is a non-flow type branch/outlet joint provided with a closure 3 that closes an insertion/removal passage 6C for the sliding valve body 7A formed in the joint body 6 when the sliding valve body 7A is removed. The child 3 is rotatably attached to the closure fitting part 1 of the joint body 6, and the sliding valve body 7A
The through hole 3A for inserting and removing the sliding valve body is formed in a shape that becomes wider toward the outer opening 6C' side of the sliding valve body insertion and removal passage 6C in an open state, and as the closing member 3 rotates, the through hole 3A A cap arranged on the closure 3 so as to be completely closed by the closure fitting part 1, and sealing the closure insertion hole 13 in the closure fitting part 1 when the closure 3 is attached. 12 is removably provided for non-flow branching and extraction joints.