JP2582823Y2 - Foreign matter discharge tube - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foreign matter discharge pipe provided in a pipe.

[0002]

2. Description of the Related Art Conventionally, a pipe line using a cast iron pipe or the like has been frequently used to guide clean water taken in on the upstream side to utilization facilities on the downstream side. If foreign matter such as mud enters this pipeline,
This foreign matter will be transported to the downstream usage facility together with the water, and will be an obstacle when using the water supply at the usage facility.

Therefore, conventionally, as a foreign matter discharging pipe for discharging foreign matter in such a pipe, for example, a stand pipe is attached to a fire hydrant provided in a pipe to drain the foreign matter to the outside of the pipe. Some of them have been proposed, and others have been proposed to discharge through a mud spout.

[0004]

[Problems to be Solved by the Invention] However, there is a problem that it is difficult to use a mud spout pipe because the number of existing ones is small. In the case of using a fire hydrant, there is a convenience that it is easy to use because there are more installations than a mud spout pipe. It is necessary to drain the water after the on-off valve is closed, and this on-off valve must be installed separately from the fire hydrant.

Accordingly, the present invention solves such a problem, and a foreign matter discharge pipe which can discharge foreign matter in the pipe by using an existing fire hydrant which is relatively easy to use and which can make the equipment compact. The purpose is to provide.

[0006]

In order to achieve the above object, the present invention provides a main pipe constituting a horizontal pipe, a branch pipe,
A valve for opening and closing a fluid passage in the main pipe is provided integrally, and an opening communicating with the branch pipe is formed in a pipe bottom of the main pipe, and the branch pipe is provided on a pipe bottom side along substantially a half circumference of the main pipe. And a spiral portion formed toward the top of the pipe from the bottom, and a straight pipe extending upward from the top of the main pipe.

[0007]

In such a configuration, when discharging foreign matter in the pipe to the outside of the pipe, the side of the branch pipe is opened and the valve is closed. Then, the fluid in the pipe is discharged through the branch pipe to the outside of the pipe, and at this time, foreign matter that has previously accumulated on the bottom of the spiral part of the branch pipe through the opening from the bottom of the pipe is discharged to the outside of the pipe together. Is discharged. In such a foreign matter discharge pipe, a branch pipe and a valve are integrally provided on a single main pipe. In particular, the branch pipe is formed from the bottom to the top of the pipe along substantially half the circumference of the main pipe. Since the spiral portion is provided, the equipment is configured to be small.

[0008]

1 and 2 show a foreign matter discharge pipe according to a first embodiment of the present invention. Here, 1 is a main pipe, and a port 2 is provided at one end.
And has an insertion port 3 at the other end, and is arranged in a horizontal direction to form a conduit. Reference numeral 4 denotes a branch pipe, which is formed integrally with the main pipe 1 and has a spiral part 5 formed from the bottom to the top of the pipe along substantially half the circumference of the main pipe 1.
And a straight part 6 extending upward from the top of the main pipe 1, and a flange 7 for attaching a fire hydrant is provided at the tip of the straight part 6. An opening 8 communicating with the branch pipe 4 is formed at the bottom of the main pipe 1 at the portion where the branch pipe 4 is formed. In addition, an air vent 9 communicating with the branch pipe 4 is formed at the top of the main pipe 1 at that portion, so that the air accumulated in the upper part of the main pipe 1 can be discharged to the branch pipe 4 side.

A gate valve 11 for opening and closing the fluid passage of the main pipe 1 is provided at a position downstream of the branch pipe 4 in the main pipe 1.
Are integrally formed. The gate valve 10 itself has a known configuration, and a detailed description thereof will be omitted.
13 is a valve seat, 14 is a valve body, 15 is a valve stem, and 16 is an operation cap. It should be noted that instead of the gate valve 11, a valve having another appropriate configuration can be used.

In such a configuration, during normal water flow, the digestion plug at the end of the branch pipe 4 is closed, and the gate valve 11 is open. At this time, the foreign matter 21 mixed in the pipe and moving with the water flowing through the pipe has a specific gravity larger than water and is relatively heavy, so it flows along the pipe bottom and passes through the opening 8. Is deposited on the bottom of the spiral part 5 of the branch pipe 4.

At the time of washing the pipe, that is, when discharging the foreign substance 21, a stand pipe for discharging the foreign substance is attached to the fire hydrant at the tip of the branch pipe 4 to make it open, and the gate valve 11 is closed. Then, including heavy foreign substances 21 flowing along the bottom of the pipe,
All the foreign matter flowing from the upstream is discharged to the outside of the pipe through the opening 8 and the branch pipe 4 together with the water in the pipe, and the foreign matter 21 can be efficiently discharged to the outside of the pipe with a small amount of water. The gate valve 11 can also be used as a normal valve for a pipeline.

As described above, since the branch pipe 4 and the sluice valve 11 are formed integrally with the single main pipe 1, it is not necessary to install the valve as a separate body as in the prior art, and foreign matter in the pipe is eliminated. The equipment for discharging waste can be made compact.

FIGS. 3 to 5 show foreign matter discharge tubes according to second to fourth embodiments of the present invention. When the pipeline network is complicated as in the case of water supply in an urban area, the flow direction of the pipeline in a portion where foreign matter should be drained is not constant, and the direction is often reversed depending on the situation. Therefore, these embodiments show ones suitable for discharging foreign matter at such a place.

In the embodiment shown in FIG. 3, branch pipes 4 are provided on both sides of a gate valve 11, respectively. In this case, foreign substances can be discharged using the branch pipe 4 that is located on the upstream side when the gate valve 11 is closed.

In the embodiment shown in FIG. 4, the spiral portion 5 of each branch pipe 4 in the embodiment shown in FIG. 3 is formed close to the valve box 12 of the gate valve 11, and the gate valve 11 and the flange of the branch pipe 4 are formed. In order to avoid interference with the flange 7, the flanges 7 are arranged at a distance from the gate valve 11, and the spiral part 5 and the flange 7 are connected by a curved pipe part 22. According to such a configuration, the overall length of the main pipe 1 can be shortened as compared with that of FIG. 3, and a further compact configuration can be realized.

In the embodiment shown in FIG. 5, gate valves 11 are provided on both sides of the branch pipe 4, respectively. In this case, foreign matter can be discharged by opening the gate valve 11 on the upstream side of the branch pipe 4 and closing the gate valve 11 on the downstream side of the branch pipe 4.

[0017]

As described above, according to the present invention, by opening the branch pipe side and closing the valve, not only can foreign substances in the pipe be efficiently discharged to the outside of the pipe, but also the branch pipe can be connected to a single main pipe. Since the valve and the valve are provided integrally with each other, and in particular, since the branch pipe has a spiral portion formed from the bottom to the top along substantially half the circumference of the main pipe, the equipment can be made compact. it can.

[Brief description of the drawings]

FIG. 1 is a front view of a foreign matter discharge pipe according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of the foreign matter discharge tube of FIG.

FIG. 3 is a front view of a foreign matter discharge pipe according to a second embodiment of the present invention.

FIG. 4 is a front view of a foreign matter discharge pipe according to a third embodiment of the present invention.

FIG. 5 is a front view of a foreign matter discharge pipe according to a fourth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main pipe 4 Branch pipe 5 Spiral part 8 Opening 11 Gate valve 21 Foreign matter

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A 3-21473 (JP, U) JP-A 60-185796 (JP, U) (58) Fields surveyed (Int. Cl. ⁶ , DB name) E03B 7/09

Claims (1)

(57) [Scope of request for utility model registration] A main pipe constituting a horizontal pipe is provided with a branch pipe.
And a valve for opening and closing a fluid passage in the main pipe are integrally provided , and an opening communicating with the branch pipe is provided at a bottom of the main pipe.
The branch pipe is formed along a substantially half circumference of the main pipe at the bottom of the pipe.
And the spiral part formed toward the top of the pipe, and the top of the main pipe
And a straight pipe extending upward from the portion .