JP2771081B2 - 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 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, 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 method of manufacturing a fuel cell system, comprising a main pipe in a horizontal direction and a bulge formed in a part of the main pipe. Part, a branch pipe branching in a different direction from the main pipe from the bulging part, and fitted into the main pipe from an end opening of the main pipe, and inside the bulging part from one end side of the main pipe to the other end side. An inner pipe that separates the interior of the main pipe from the interior of the bulging portion by being passed to the outside, and an opening formed at least at the bottom of the inner pipe and communicating between the inner pipe and the bulging portion. It was made.

[0006]

[Function] In such a case, at the time of normal water flow,
The foreign matter flows through the bottom of the tube due to its relatively heavy weight, 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, the foreign matter deposited on the bottom of the bulging part is sent into the branch pipe through the bulging part, and the relatively heavy foreign matter flowing in the pipe is opened and bulged. It is also fed into the branch pipe through the outlet. Therefore, these foreign substances are efficiently discharged out of the tube.

[0007]

In FIG. 4, 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 3 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 insertion port 8 at the other end,
It is arranged in a horizontal direction to form the conduit 1. Main pipe 6
A cylindrical bulge 9 having a larger diameter than other parts is integrally formed in a part of the part over a certain length.
The swelling portion 9 is integrally formed with a branch pipe 10 that branches upward from the swelling 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.

A thin inner tube 12 is inserted into the main tube 6 from the insertion port 8 side so as to be in close contact with the inner surface of the main tube 6. Inside the main pipe 6 on the receiving port 7 side with respect to the bulging portion 9, an inner peripheral projection 13 that receives the tip of the inner pipe 12 and positions the inner pipe 12 in the pipe axis direction is formed. By inserting the inner pipe 12 into the main pipe 6 until the inner pipe 13 hits the inner peripheral projection 13, the inner pipe 12 is moved from the one end side of the main pipe 6 to the other end side in the bulging portion 9 as illustrated. As a result, it functions so as to separate the inside of the main pipe 6 from the inside of the bulging portion 9. Thereby, the annular space 14 is formed inside the bulging portion 9.
Is formed. The inner pipe 12 is configured such that the inner diameter thereof is equal to the inner diameters of the other pipes constituting the pipe 1.

A position corresponding to the bulging portion 9 in the inner tube 12,
Particularly at the position corresponding to the branch pipe 10, at the bottom of the pipe,
An opening 15 is formed for communicating the inside of the inner tube 12 with 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 configuration, at the time of ordinary water flow, the foreign matter 16 mixed into the pipeline 1 and moving with the water flowing through the pipeline 1 has a higher specific gravity than water and is relatively heavy. Flows along the pipe bottom, passes through the opening 15 on the pipe bottom side, and accumulates on the bottom of the annular space 14.

When the pipe is washed, that is, when the foreign matter 16 is discharged, the fire hydrant 5 is opened. Then, the foreign matter 16 deposited 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. These foreign substances 16 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 16 and the amount of drainage (ie, the suction force of the foreign matter 16). As described above, the pipe 4 for discharging foreign matter in the pipe is connected to the inner pipe 12 from one end of the main pipe 6.
The annular space 14 can be formed simply by inserting the, so that the configuration can be simplified and the manufacturability can be improved.

FIGS. 5 and 6 show a pipe 4 for discharging foreign matter in the pipe.
3 shows another embodiment. In this embodiment, a pedestal 17 is formed at 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 a position of the bottom surface 18 in the radial direction coincides with a position of the outer peripheral surface 20 of the flange 19 of the socket 7. It is formed as follows. By forming such a pedestal 17, the seating of the tube 4 is stabilized, and a stable state can be ensured when the tube 4 is stored, transported, or laid at a predetermined place. As shown by the imaginary line in FIG. 6, by making the cross-sectional shape of the pedestal 17 trapezoidal, a more favorable stable state can be obtained.

FIGS. 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 fit into the main pipe 6 from the end opening of the receiving port 7, and receives the tip end of the inner pipe 12 at the insertion port 8 side of the main pipe 6 in the pipe axial direction. An inner peripheral projection 13 for positioning is formed. A flange 27 is formed at the opening end on the receiving side of the inner tube 12 to be in contact with the rear end surface 26 of the receiving port 7. Since the flange 27 is sandwiched between the rear end face 26 and the distal end face of the insertion port 8 of another pipe inserted into the receiving port 7, the inner pipe 12 is prevented from coming out of the receiving port 7. You. 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. 8 (a) 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 projection 28 is formed which is continuous with the inner peripheral projection 13. The projection 28 fits into the opening 15, so that the rotation of the inner pipe 12 is prevented. Is prevented from being displaced in the circumferential direction. It is preferable that the height of the projection 28 be equal to or slightly larger than the thickness of the inner tube 12. The same anti-rotation mechanism can be adopted in the embodiments of FIGS. 1 to 3 and the embodiments of FIGS.

FIGS. 8B and 8C show modified examples of the opening 15. The opening 15 is composed of a plurality of rectangular holes provided at intervals in FIG. In (c), a plurality of round holes are similarly provided at intervals. By forming the holes at such an interval, it is possible to prevent the re-floating of the foreign matter that has passed through the opening 15 and settled and accumulated in the annular space 14. Although not shown, as in the case of FIG. 3A, a notch that fits into the protrusion 28 is formed at the end of the inner tube 12,
The rotation can be prevented.

FIG. 10 shows a further modification of the inner tube 12 inserted from the receiving port 7 side. In the inner tube 12, as shown in the figure, in addition to the slit-shaped opening 15, one or more cutouts 29 are formed in the circumferential direction at the opening end opposite to the flange 27. Although not shown, the main pipe 6 is formed with a similar protrusion that fits into the cut portion 29 in addition to the protrusion 28. According to such a configuration, FIGS.
A more reliable rotation preventing effect can be expected than the example shown in FIG.

FIGS. 11 and 12 show another example of the rotation preventing mechanism. In this example, one or more protrusions 30 are formed in the circumferential direction on the inner end surface 26 of the receiving port 7, while a hole 31 is formed in the flange 27 of the inner tube 12 so that the protrusions 30 fit. ing. The fitting of the projection 30 and the hole 31 prevents rotation of the inner tube 12.

[0020]

As described above, according to the present invention, an inner pipe having an opening is fitted into the main pipe from an end opening of the main pipe, and the inner pipe is inserted into one end of the main pipe in a bulged portion with a branch pipe. By separating the inside of the main pipe and the inside of the bulge from the other end to the other side, foreign matter in the pipe can be collected and deposited in the bulge, and this foreign matter can be passed through the branch pipe to the outside of the pipe. Since the foreign matter can be discharged, the foreign matter can be efficiently discharged. In addition, the pipe for discharging foreign matter in the pipe can be simply configured by simply inserting the inner pipe into the main pipe, and the pipe for discharging foreign matter in the pipe can be easily manufactured.

[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 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 laying state of a pipe for discharging foreign matter in the pipe.

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

FIG. 6 is a cross-sectional view of the pipe for discharging foreign matter in the pipe of FIG. 5;

FIG. 7 is a longitudinal 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 tube in FIG. 7;

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

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

11 is a sectional view of a main part of another example of an inner tube rotation preventing mechanism usable in the embodiment of FIG. 7;

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

[Explanation of symbols]

 6 Main pipe 9 Swelling section 10 Branch pipe 12 Inner pipe 15 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, wherein a main pipe in a horizontal direction, a bulge formed in a part of the main pipe, and a main pipe separated from the bulge are provided. A branch pipe that branches in the direction of the main pipe is fitted into the main pipe from an end opening of the main pipe, and the inside of the bulging portion is extended from one end to the other end of the main pipe, so that the inside of the main pipe expands. What is claimed is: 1. A pipe for discharging foreign matter in a pipe, comprising: an inner pipe for partitioning the inside of the protruding portion; and an opening formed at least at the bottom of the inner pipe for communicating the inside of the inner pipe with the protruding portion.