JPH018799Y2 - - 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. The present invention relates to a non-flow type branch/outlet joint that is provided with a valve body that closes when the valve is closed.

Conventionally, as shown in FIG. 1A, a sliding valve body 0 for closing a passage 01 for insertion and removal of a punching machine and for connecting a branch pipe is provided in a joint body 02 attached to a main pipe P.
4 is configured so that it can be pressed against the valve seat 21 of the joint body 02 with a bolt 22, and after forming a branch port 17 in the main pipe P with a drilling machine 16 inserted from the passage 01, After closing the passage 01 with the sliding valve body 04 while preventing leakage, removing the perforator 16 from the passage 01 and connecting the branch pipe 18,
The sliding valve body 04 was opened to allow branch pipe connections to be made without leakage while fluid transport through the main pipe P continued. In addition, as shown in Figure 1B,
With the sliding valve body 04 removed from the joint body 02, the outer opening 0 of the passage 05 for insertion and removal of the sliding valve body 04
5A was configured to be closed by a swinging valve body 24 that was biased to close by a spring 23 to prevent leakage from the joint body 02 after construction.

However, the swinging valve body 24 closed by the spring 23
In practice, it is extremely difficult to prevent leakage in a highly reliable manner over a long period of time.Especially when the joint body 02 is buried, the rocking valve body 24 may open due to earth pressure, water pressure, etc. The drawback was that large amounts of leakage were likely to occur.

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 avoid making the work associated with inserting and removing the sliding valve body difficult. The point is to make it so.

A characteristic configuration of the present invention is that a valve body 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 valve housing portion of the joint body, A through hole through which the sliding valve body is inserted and removed is provided in the valve body so as to be fully closed in the valve storage portion as the valve body rotates, and its effects are as follows. It is as follows.

In other words, when the valve body is rotated to set the through hole in communication with the passage for inserting and removing the sliding valve body, in order to block the passage for inserting and removing the punching machine in the joint body and for connecting the branch pipe, The work of inserting the sliding valve body into the joint body can be done easily and quickly by passing the valve body.

When removing the sliding valve body from the joint body, if you rotate the valve body after pulling it out so that the through hole is fully closed in the valve housing, the action of the valve body will cause the above-mentioned Compared to the prior art, leakage can be reliably prevented for a long period of time, and even if the joint body is buried, the valve body 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, and moreover, it is possible to simply rotate the valve body. It is now possible to provide a non-flow-blocking type branch/outlet joint that requires only a simple operation and is excellent in both leak prevention performance and operability.

Next, examples will be shown.

As shown in FIGS. 2 and 3, a passage 1 for insertion and removal of a punching machine and for connecting a branch pipe is formed in the joint body 2 attached to the main pipe P, and a passage 1 for inserting and removing a punching machine and for connecting a branch pipe is formed in the joint body 2 to be attached to the main pipe P. A connecting flange 3A is provided for connection to the connecting flange 3A for bolt connection, and the passage 1 is airtightly connected to the branch port 17 so that a branch hole 17 can be formed in the main pipe P using a drilling machine 16 attached to the connecting flange 3A. The connecting flange 3
The branch pipe 18 attached to A can be connected to the main pipe P through the branch port 17 and passage 1.

A shutter device 13, which is equipped with a sliding valve body 4 for closing the passage 1 that can be slidably operated using a rotary handle 11B and a bolt 11C, is removably connected to a connecting flange 3B of the joint body 2 with a bolt 12, and A passage 5 for inserting and removing the valve body 4 is formed inside the joint body 2, and the valve body 7 having a through hole 7A for inserting and removing the sliding valve body 4 is rotatably operated in the valve housing part of the joint body 2. 6, so that when the sliding valve body 4 is removed, the passage 5 for insertion and removal of the sliding valve body can be sealed with the valve body 7, and the passage 5 is closed with a lid 15 bolted to the joint body 2. It is configured so that the outer opening 5A can be sealed.

In short, while continuing fluid transport through the main pipe P, drilling, connecting the branch pipe 18, and recovering the shutter device 13, leakage prevention by the drilling machine 16, valve body 7, and shutter device 13 during drilling,
Leakage prevention by sliding valve body 4 when branch pipe 18 is connected;
The structure is such that leakage can be prevented by the valve body 7 and the like after the shutter device is recovered.

As shown in FIGS. 4 and 5, an elastic seal 8 is formed on the entire outer peripheral surface of the cylindrical body to form the valve body 7.
A cap 14 is provided with a square shaft 7B for rotating operation on one end side of the valve body 7, and seals the valve body insertion hole 6A of the valve storage portion 6 when the valve body 7 is attached.
is provided in the valve storage part 6 so as to be detachable by means of a threaded part,
The through hole 7A for inserting and removing the sliding valve body is formed so as to be able to communicate with the passage 5 for inserting and removing the sliding valve body, and is completely closed by the valve storage portion 6 as the valve body 7 rotates. It is arranged like this.

Incidentally, 2A and 2B are coupling parts for attaching the joint body 2 to the main pipe P, and are attached to the main pipe P with tightening bolts and nuts 10. 3 is a cylindrical portion of the joint body 2, 9 is an O-ring, and 11 is a case of a shutter device 13 which is removably connected to a flange 3B through a flange 11A.

Next, another embodiment will be described.

The valve body 7 may have a tapered peripheral surface.

As shown in FIG. 6, the joint body 2 may be formed in sections and attached to the main pipe P by welding.

[Brief explanation of drawings]

FIGS. 1A and 1B show a conventional example, in which A is a cross-sectional view of a state in the middle of construction, and FIG. 1B is a cross-section of a state of completed construction.
Figures 2 to 5 show embodiments of the present invention. Figure 2 is a cross-sectional view of the shutter device and drilling machine installed, Figure 3 is a cross-sectional view of the completed construction, and Figure 4 is a cross-sectional view of the construction completed. FIG. 5 is a cross-sectional view taken along the line ``-'' in the figure, and FIG. FIG. 6 is a sectional view showing another embodiment of the present invention. 1... Passage, 2... Joint body, 4... Sliding valve body, 5... Passage, 6... Valve housing section, 7... Valve body,
7A...Through hole, 16...Drilling machine, 17...Branch port, P...Main pipe.

Claims (1)

[Scope of utility model registration request] It has a passage 1 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 1 airtightly communicating with a branch port 17 formed in the main pipe P by a punching machine 16. A sliding valve body 4 for closing the passage 1 is removably attached to the joint body 2, and a passage 5 for insertion and removal of the sliding valve body 4 formed in the joint body 2 is connected to the sliding valve body 4. The valve body 7 is rotatably attached to the valve accommodating portion 6 of the joint body 2, and the sliding valve body 4 is attached to the valve accommodating portion 6 of the joint body 2. The valve body 7 is provided with a non-flow type branching/extracting joint in which a through hole 7A for insertion and removal is arranged so as to be completely closed by the valve storage portion 6 as the valve body 7 rotates.