JPH06158686A - Pipe for discharging in-pipe foreign matter - Google Patents

Abstract

PURPOSE:To efficiently discharge foreign matter in a pipeline to the outside of a pipe by fitting an opened inner pipe into a main pipe from the end opening of the main pipe, and stretching the inner pipe from one end to the other end of the main pipe within an inflating portion equipped with a branch pipe, and partitioning the inside of the main pipe from the inside of the inflating portion. CONSTITUTION:During a normal water feeding operation, foreign matter 16 contained in a pipe line and migrating together with water, is forced to flow along the bottom of a pipe and to pass through the opening 15 of the pipe bottom and is accumulated on the bottom of an annular space 14. To wash the pipe, a fire hydrant is opened and then the foreign matter 16 accumulated on the bottom of the annular space 14 is forced to flow through the annular space 14 by a water flow and fed into a branch pipe 10, and the foreign matter 16 which is then flowing through the pipe is also fed into the branch pipe 10 through the opening 15 and discharged to the outside of the pipe through the fire hydrant. Therefore, the foreign matter 16 can efficiently be discharged and a pipe 4 for discharging in-pipe foreign matter can be formed simply by insertion of an inner pipe 12 into a main pipe 6.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art Conventionally, in the case of introducing clean water taken in on the upstream side to a utilization facility on the downstream side, a pipe line using a cast iron pipe or the like is often used. If foreign matter such as mud enters this pipeline,
This foreign substance will be transferred to the downstream utilization facility together with water, which will be an obstacle when using the water supply in the utilization facility. Therefore, various kinds of discharge pipes for discharging such foreign matter in the pipe have been conventionally proposed.

[0003]

However, the conventional pipe for discharging foreign matter in a pipe has a problem that it is not easy to discharge the foreign substance to the outside of the pipe and it is difficult to efficiently discharge the foreign substance.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve such a problem and to allow foreign matter flowing in a pipe to be efficiently discharged to the outside of the pipe.

[0005]

In order to achieve the above object, the present invention provides a horizontal main pipe and a bulge formed in a part of the main pipe for discharging foreign matter in the pipe provided in the middle of the pipe line. Part, a branch pipe branching from the bulging part in a direction different from the main pipe, and a fitting into the main pipe from an end opening of the main pipe, and the inside of the bulging part from one end side to the other end side of the main pipe. The inner pipe divides the inside of the main pipe from the inside of the bulging part by being passed over, and an opening formed at least at the bottom of the inner pipe to communicate the inside of the inner pipe with the inside of the bulging part. It is the one.

[0006]

[Operation] With such a thing, during normal water flow,
Since the foreign matter is relatively heavy, it flows through the bottom of the tube and accumulates at the bottom of the bulging portion through the opening. If the side of the branch pipe is opened during washing, the foreign substances accumulated on the bottom of the bulging part are sent into the branch pipe through the bulging part, and the relatively heavy foreign substances flowing in the pipe are opened and expanded. It is similarly fed into the branch pipe through the inside of the outlet. Therefore, these foreign substances are efficiently discharged out of the pipe.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 4, reference numeral 1 is a pipe for water supply, which is composed of a cast iron pipe laid horizontally in the ground. 2 is a pit for fire hydrants, 3 on the ground
Is installed toward the pipeline 1. A pipe 4 for discharging foreign matter in the pipe according to the present invention is arranged in a portion of the pipe 1 in the pit 2, and a fire hydrant 5 is attached to the pipe 4.

1 to 3 show a pipe 4 for discharging foreign matter in the pipe.
2 shows a detailed structure of one embodiment. Here, 6 is the main pipe,
Having a socket 7 at one end and an insertion slot 8 at the other end,
They are arranged horizontally to form the conduit 1. Main pipe 6
A cylindrical bulging portion 9 having a larger diameter than the other portions is integrally formed in a part of the above portion over a certain length.
The bulging portion 9 is integrally formed with a branch pipe 10 that branches upward from the bulging portion 9 in the vertical direction. Using the mounting flange 11 at the tip of the branch pipe 10, the fire hydrant 5 is mounted as shown in FIG.

Inside the main pipe 6, a thin inner pipe 12 is inserted from the insertion port 8 side so as to be in close contact with the inner surface of the main pipe 6. Inside the main pipe 6 on the receiving port 7 side with respect to the bulging portion 9, an inner peripheral projection 13 is formed for receiving the tip end of the inner pipe 12 and positioning the inner pipe 12 in the pipe axial direction. By inserting the inner pipe 12 into the main pipe 6 until it hits the inner circumferential protrusion 13, the inner pipe 12 is passed through the bulging portion 9 from one end side to the other end side of the main pipe 6 as illustrated. In fact, it functions to partition the inside of the main pipe 6 and the inside of the bulging portion 9. As a result, the annular space 14 is provided inside the bulging portion 9.
Is formed. The inner tube 12 is configured such that its inner diameter is aligned with the inner diameters of the other tube bodies that form the conduit 1.

A position corresponding to the bulging portion 9 of the inner pipe 12,
Especially at the position corresponding to the branch pipe 10, at the bottom of the pipe,
An opening 15 is formed to connect the inside of the inner tube 12 and the inside of the annular space 14 of the bulging portion 9. Similarly, an air vent hole 21 is formed at the top of the tube.

In such a structure, the foreign matter 16 mixed in the pipe line 1 and moving together with the water flowing in the pipe line 1 at the time of normal water passage has a specific gravity larger than that of water and is relatively heavy. , Flows along the tube bottom, passes through the opening 15 on the tube bottom side, and deposits on the bottom of the annular space 14.

When washing the pipe, that is, when discharging the foreign matter 16, the fire hydrant 5 is opened. Then, the foreign matter 16 accumulated on the bottom of the annular space 14 of the bulging portion 9 is sent into the branch pipe 10 through the annular space 14 by the water flow, and the foreign matter 16 flowing in the pipe is also opened. Then, the foreign matters 16 pass through the fire hydrant 5 and are discharged to the outside of the pipe.

It should be noted that there is a limit value for the length and the caliber, that is, the depth of the bulging portion 9 based on the size of the foreign matter 16 and the drainage amount (that is, the suction force of the foreign matter 16). As described above, the pipe 4 for discharging foreign matter in the pipe is formed from one end of the main pipe 6 to the inner pipe 12
Since the annular space 14 can be formed only by inserting, the structure can be simplified and the manufacturability can be improved.

5 and 6 show a pipe 4 for discharging foreign matter in the pipe.
Another embodiment will be described. In this embodiment, a pedestal 17 is formed on the bottom of the bulging portion 9. The pedestal 17 has a rectangular cross section, a bottom surface 18 formed in a flat shape, and the position of the bottom surface 18 in the radial direction matches the position of the outer peripheral surface 20 of the flange 19 of the receiving port 7. Is formed. By forming such a pedestal 17, the seating of the pipe 4 is stabilized, and a stable state can be secured when the pipe 4 is stored, transported, or laid at a predetermined place. As shown by an imaginary line in FIG. 6, by making the pedestal 17 have a trapezoidal cross section, a more stable state can be obtained.

7 to 9 show still another embodiment of the pipe 4 for discharging foreign matter in the pipe. In this embodiment, the inner pipe 12 is configured to be fitted into the main pipe 6 through the end opening of the receiving port 7, and the tip end portion of the inner pipe 12 is received on the insertion port 8 side of the main pipe 6 in the pipe axial direction. Inner peripheral projections 13 for positioning are formed. A flange 27 is formed at the opening end of the inner pipe 12 on the receiving side so as to be in contact with the rear end surface 26 of the receiving port 7. The flange 27 is sandwiched between the rear end surface 26 and the tip surface of the insertion opening 8 of another tube inserted into the receiving opening 7 to prevent the inner tube 12 from coming out of the receiving opening 7. It The flange 27 may be formed over the entire circumference as shown, or may be formed partially in the circumferential direction.

As shown in FIGS. 8A and 9, the opening 15 is formed in a slit shape over a predetermined length from the opening end of the inner tube 12 opposite to the flange 27.
At the bottom of the main pipe 6, a protrusion 28 continuous with the inner peripheral protrusion 13 is formed. By fitting the protrusion 28 into the opening 15, the rotation of the inner pipe 12 is prevented and the opening 15 The positional displacement of the is prevented. It is preferable that the height of the protruding portion 28 be equal to or slightly larger than the thickness of the inner tube 12. It should be noted that the same rotation preventing mechanism can be adopted in the above-described embodiments of FIGS. 1 to 3 and the embodiments of FIGS. 5 to 6.

FIGS. 8B and 8C show a modified example of the opening 15. The opening 15 is composed of a plurality of rectangular holes provided at intervals in (b). Further, in (c), it is composed of a plurality of circular holes that are similarly provided at intervals. By forming the holes at intervals as described above, it is possible to prevent re-levitation of the foreign matter that has passed through the opening 15 and settled and accumulated in the annular space 14. Although illustration is omitted, as in the case of FIG. 3A, by forming a cut portion that fits in the protrusion 28 at the end portion of the inner pipe 12,
The rotation can be prevented.

FIG. 10 shows a further modified example of the inner tube 12 inserted from the receiving port 7 side. In the inner tube 12, as shown in the drawing, in addition to the slit-shaped opening 15, a single or a plurality of notches 29 are formed in the circumferential direction at the opening end opposite to the flange 27. Although not shown, the main pipe 6 has not only the protrusion 28 but also a similar protrusion that fits in the notch 29. According to such a configuration, FIGS.
A more reliable anti-rotation effect can be expected than the example shown in.

11 and 12 show another example of the rotation preventing mechanism. In this example, one or a plurality of projections 30 are formed in the circumferential direction on the rear end surface 26 of the receiving port 7, while the flange 27 of the inner pipe 12 is formed with a hole 31 into which the projections 30 fit. ing. Then, the protrusion 30 and the hole 31 are fitted to each other, whereby the rotation of the inner pipe 12 is prevented.

[0020]

As described above, according to the present invention, an inner pipe having an opening is fitted into the main pipe from the end opening of the main pipe, and the inner pipe is fitted into the bulging portion with the branch pipe at one end side of the main pipe. By partitioning the inside of the main pipe from the inside of the bulging portion toward the other end, foreign substances in the pipe can be collected and accumulated in the bulging portion, and this foreign substance can pass through the branch pipe to the outside of the pipe. Since the foreign matter can be discharged, the foreign matter can be efficiently discharged. Moreover, by simply inserting the inner pipe into the main pipe, the pipe for discharging foreign matter in the pipe can be easily configured, and the pipe for discharging foreign matter in the pipe can be easily manufactured.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a pipe for discharging foreign matter in a pipe according to an embodiment of the present invention.

FIG. 2 is a plan view of a main part of a pipe for discharging foreign matter in the pipe.

FIG. 3 is a cross-sectional view of a pipe for discharging foreign matter in the pipe.

FIG. 4 is a view showing a laid state of a pipe for discharging foreign matter in the pipe.

FIG. 5 is a vertical sectional view of a pipe for discharging foreign matter in a pipe according to another embodiment of the present invention.

6 is a cross-sectional view of the tube for discharging foreign matter in the tube of FIG.

FIG. 7 is a vertical sectional view of a pipe for discharging foreign matter in a pipe according to still another embodiment of the present invention.

FIG. 8 is a perspective view of the inner pipe in FIG.

9 is a cross-sectional view of a main part of FIG. 7 in plan view.

10 is a perspective view showing another example of the inner pipe usable in the embodiment of FIG. 7.

11 is a cross-sectional view of the main parts of another example of the rotation preventing mechanism for the inner pipe that can be used in the embodiment of FIG. 7.

FIG. 12 is a perspective view of a main part of the inner pipe in FIG. 11.

[Explanation of symbols]

 6 Main pipe 9 Bulging part 10 Branch pipe 12 Inner pipe 15 Opening

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Shigeru Sakata 5693 42 Goi, Ichihara-shi, Chiba (72) Inventor Toshihiro Kubo 2-26 Ohama-cho, Amagasaki-shi, Hyogo Stock company Kubota Mukogawa Works (72) Inventor Yutaka Isu 2-26 Ohama-cho, Amagasaki City, Hyogo Prefecture Kubota Mukogawa Works

Claims (1)

[Claims] 1. A pipe for discharging foreign matter in a pipe, which is provided in the middle of a pipe line, wherein a horizontal main pipe, a bulge part formed in a part of the main pipe, and a main pipe from the bulge part are separated from each other. And a branch pipe that branches in the direction of the main pipe, and is fitted into the main pipe through the end opening of the main pipe, and the inside of the main pipe is expanded by being passed through the bulging portion from one end side to the other end side of the main pipe. A pipe for discharging foreign matter in a pipe, comprising: an inner pipe partitioning from the inside of the outlet portion; and an opening formed at least at a bottom portion of the inner pipe to communicate the inside of the inner pipe with the inside of the bulging portion.