JP2771083B2 - Pipe for discharging foreign matter in the pipe - Google Patents

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.

[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 or organic suspended matter enters this pipeline, the foreign matter is transported together with the water to the downstream use facility, which becomes an obstacle when using water supply at the use facility. Therefore, conventionally, various types of discharge pipes for discharging such foreign matter in the pipe have been proposed.

[0003]

However, in the conventional pipe for discharging foreign matter in a pipe, there is a problem that it is difficult to discharge foreign matter outside the pipe, and it is difficult to efficiently discharge the foreign matter.

[0004] Therefore, an object of the present invention is to solve such a problem and to enable foreign substances flowing in a pipe to be efficiently discharged outside the pipe.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a pipe for discharging foreign matter in a pipe provided in the middle of a pipe, which is formed at a horizontal main pipe and at an end of the main pipe. A bulging portion that opens at the end, a branch pipe that branches from the bulging portion in a direction different from the main pipe, and a bulging portion that is connected to the main pipe at an opening on the bulging portion side of the main pipe. The main pipe is inserted from the opening of the main pipe through the opening of the main pipe from the opening of the main pipe and the inside of the bulge by being passed through the bulge in the length direction of the main pipe. An inner tube having an exposed portion extending in the horizontal direction to the opposite side, and an opening formed at least at the bottom of the inner tube and communicating the inside of the inner tube and the inside of the bulging portion are provided.

[0006]

[Function] In such a case, at the time of normal water flow,
Foreign matter flows along the bottom of the tube and accumulates at the bottom of the bulge through the opening. If the side of the branch pipe is opened at the time of washing the pipe, foreign matter deposited on the bottom of the bulging part is sent into the branch pipe through the bulging part, and relatively heavy foreign matter flowing in the pipe is formed in the opening part. It is likewise fed into the branch pipe through the bulge.
Therefore, these foreign substances are efficiently discharged out of the tube.

[0007]

In FIG. 5, reference numeral 1 denotes a pipe for water supply, which is constituted by a cast iron pipe laid horizontally in the ground. Reference numeral 2 denotes a pit for a fire hydrant.
Is installed toward the pipeline 1. A pipe 4 for discharging foreign matter in the pipe according to the present invention is disposed in a portion of the pipe 1 in the pit 2, and a fire hydrant 5 is attached to the pipe 4.

FIGS. 1 to 4 show a pipe 4 for discharging foreign matter in the pipe.
1 shows a detailed structure of one embodiment. Here, 6 is a main pipe,
It has a receiving port 7 at one end and an opening 8 at the other end,
It is arranged in a horizontal direction to form the conduit 1. Main pipe 6
On the opening 8 side, a cylindrical bulging portion 9 having a larger diameter than other portions is integrally formed over a predetermined length, and a flange 10 is formed around the opening 8. The swelling portion 9 is integrally formed with a branch pipe 11 that branches upward from the swelling portion 9 in the vertical direction. Using the mounting flange 12 at the tip of the branch pipe 11, the fire hydrant 5 is mounted as shown in FIG.

An inner tube 13 is inserted into the main tube 6 from the opening 8 side. Inside the main pipe 6 on the receiving port 7 side with respect to the bulging portion 9, an inner peripheral projection 14 for receiving the tip of the inner pipe 13 and positioning the inner pipe 13 in the pipe axis direction is formed. The inner tube 13 is composed of an insertion portion 13a and an exposed portion 13b. By inserting the insertion portion 13a into the main tube 6 until the insertion portion 13a hits the inner peripheral projection 14, the inner tube 13 expands as shown in the figure. The inside of the section 9 is passed from one end side of the main pipe 6 to the other end side, and functions so as to separate the inside of the main pipe 6 from the inside of the bulging section 9. Thus, an annular space 15 is formed inside the bulging portion 9. Further, the inner tube 13 has an insertion portion 13a.
A flange 16 is provided at the boundary between the inner tube 13 and the exposed portion 13b. The flange 16 closes the opening 8 at the end of the main tube bulging portion 9 when the inner tube 13 is inserted into the main tube 6, and exposes the exposed portion.
13b is configured to extend out of the main pipe 6. Main pipe 6
A packing 17 is interposed between the end flange 10 and the inner tube 13 flange 16 to ensure a tight seal. The main pipe 6 and the inner pipe 13 can be joined by a so-called mechanical joint or Titon joint other than the flange joint as shown.

A position corresponding to the bulging portion 9 in the inner tube 13;
In particular, at the position corresponding to the branch pipe 11, openings 18 and 19 are formed at the top and bottom of the pipe to communicate the inside of the inner pipe 13 with the inside of the annular space 15 of the bulging portion 9. Pipe top opening
Reference numeral 18 allows the air accumulated in the upper portion of the main pipe 6 to be discharged to the branch pipe 11 side. The opening 19 at the bottom of the tube is formed in a rectangular slit shape having a length substantially corresponding to the entire length of the bulging portion 19.

In such a configuration, during normal water flow, the foreign matter 20 mixed into the pipe 1 and moving together with the water flowing through the pipe 1 flows along the bottom of the pipe, and the opening 20 at the bottom of the pipe. After passing through the part 19, it accumulates on the bottom of the annular space 15. Foreign matter
20 includes an organic suspended matter, which also passes through the opening 19 and is similarly deposited.

When the pipe is washed, that is, when the foreign matter 20 is discharged, the fire hydrant 5 is opened. Then, the foreign matter 20 deposited on the bottom of the annular space 15 of the bulging portion 9 is sent into the branch pipe 11 through the annular space 15 by the water flow, and the foreign matter 20 flowing in the pipe is also opened. Are passed into the branch pipe 11, and these foreign substances 20 pass through the fire hydrant 5 and are discharged out of the pipe.

The length and diameter, ie, depth, of the bulging portion 9 have a limit value based on the size of the foreign matter 20 and the amount of drainage (ie, the suction force of the foreign matter 20). As described above, the pipe 4 for discharging foreign matter in the pipe is connected to the inner pipe 13 from one end of the main pipe 6.
The annular space 15 can be formed simply by inserting the, so that the configuration can be simplified and the manufacturability can be improved.

FIGS. 6 and 7 show a tube 4 for discharging foreign matter in a tube according to another embodiment of the present invention. In this embodiment, the openings 19 at the bottom of the tube are formed in a rectangular hole shape having long sides along the circumferential direction, and a plurality of openings 19 are formed at a distance from each other along the length direction of the inner tube 13. I have. As a result, each opening
Intermediate wall portions 21 are formed between the respective 19 portions.

In such a configuration, the organic suspended matter constituting the foreign matter 20 is relatively lightweight, and thus tends to float upward from the bottom of the annular space 15. Floating that reaches the inner tube 13 is prevented. It should be noted that the plurality of openings 19 may be formed in a circular shape or another shape instead of the rectangular shape as shown in the figure.

[0016]

As described above, according to the present invention, a part of the inner pipe having an opening is fitted into the main pipe from the end opening of the main pipe, and the inner pipe is inserted into the bulged portion with the branch pipe. By separating the inside of the main pipe and the inside of the bulge in the length direction of the pipe, foreign matter in the pipe can be collected and deposited in the bulge, and this foreign matter can be discharged outside the pipe through the branch pipe Therefore, the foreign matter can be efficiently discharged.
Moreover, the pipe for discharging foreign matter in the pipe can be easily assembled simply by connecting the inner pipe to the main pipe, and the main pipe and the inner pipe are separated from each other, and the bulge portion of the main pipe is opened at the end of the main pipe. Because of the structure, the discharge pipe having a complicated structure can be constituted by the main pipe and the inner pipe having a simple structure.

[Brief description of the drawings]

FIG. 1 is a longitudinal 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 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 plan view of a main part of a pipe for discharging foreign matter in the pipe.

FIG. 5 is a view showing a laying state of a pipe for discharging foreign matter in the pipe.

FIG. 6 is a longitudinal sectional view of a pipe for discharging foreign matter in a pipe according to another embodiment of the present invention.

FIG. 7 is a plan view of a main part of a pipe for discharging foreign matter in the pipe.

[Explanation of symbols]

 6 Main pipe 9 Swelling section 11 Branch pipe 13 Inner pipe 19 Opening

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Shigeru Sakata 5693-42 Goi, Ichihara-shi, Chiba Prefecture (72) Toshihiro Kubo 2-26, Ohama-cho, Amagasaki-shi, Hyogo Prefecture Kubota Mukogawa Works (72) Invention Person Yutaka Isu 2-26, Ohama-cho, Amagasaki-shi, Hyogo Pref. Kubota Mukogawa Works, Ltd. (56) References Japanese Utility Model 3-21473 (JP, U) (58) Fields surveyed (Int. Cl. ⁶ , DB) (Name) E03B 7/09 B08B 9/02 E03B 9/02

Claims (1)

(57) [Claims] 1. A pipe for discharging foreign matter in a pipe provided in the middle of a pipe, comprising: a main pipe in a horizontal direction; a bulge formed at an end of the main pipe and opened at the end; A branch pipe branching in a direction different from the main pipe from the protruding part, and connected to the main pipe at an opening on the side of the protruding part of the main pipe, and fitted into the main pipe from the opening of the protruding part to protrude; An inner portion provided with an insertion portion that separates the inside of the main tube from the inside of the bulging portion by being passed through the inside of the main tube in the longitudinal direction, and an exposed portion that extends horizontally from the opening of the bulging portion to the opposite side to the main tube. What is claimed is: 1. A pipe for discharging foreign matter in a pipe, comprising: a pipe; and an opening formed at least at a bottom portion of the inner pipe to allow communication between the inner pipe and the bulging portion.